Prefabricated concrete composite vibrating device

Abstract

The utility model discloses a precast concrete composite vibrating device which comprises an upper end plate, a vibrating rod connected with the upper end plate and a vibrating core rod penetrating through the upper end plate and extending into the vibrating rod, the vibrating core rod is connected with the upper end plate and the vibrating rod through a first bearing, and an eccentric vibrating block is arranged on the vibrating core rod. The lower end of the vibrating rod is connected with an extension rod, the exterior of the extension rod is connected with a mounting sleeve, a transmission shaft is mounted in the mounting sleeve through a second bearing, the lower end of the vibrating core rod extends into the extension rod and is connected with the transmission shaft through a speed reducing mechanism, and the lower end of the transmission shaft penetrates out of the mounting sleeve and is connected with a transverse stirring rod; and the bottom of the extension rod is connected with a perforated pressing plate. According to the vibrating device, the upper end plate and the vibrating rods are combined, large-area vibration can be carried out on the surface layer and the interior of concrete so as to accelerate bubble discharging, the lengths of the vibrating rods can be overlapped, deep bubbles in the concrete can be treated, the vibrating time can be greatly shortened, and the working efficiency and the bubble removing effect can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete vibration, in particular to a precast concrete composite vibration device. Background Art

[0002] When pouring concrete components, generally a vibrating rod is used to discharge the air bubbles in the concrete, so that the concrete is compactly combined to improve the strength of the components. The existing vibrating rod has a single structure and function. The vibrating effective area of the cylindrical vibrating head is small, and it takes a long time to complete the vibrating work. And limited by its length, when dealing with some air bubbles deep inside, it cannot be well processed, and mostly only the air bubbles on the surface layer can be discharged. The current treatment method is to increase the number of vibrating rods to improve the air bubble discharge speed, but still cannot well solve the above problems. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a precast concrete composite vibration device, aiming to solve the technical problems existing in the prior art, such as the single structure and function of the traditional vibrating rod, the long vibrating time, and the inability to process the air bubbles deep inside.

[0004] The technical solution of the utility model is: a precast concrete composite vibration device, including an upper end plate, a vibrating rod connected to the upper end plate, and a vibration core rod passing through the upper end plate and extending into the vibrating rod. The vibration core rod is respectively connected to the upper end plate and the vibrating rod through a first bearing, and an eccentric vibration block is arranged on the vibration core rod; a extension rod is connected to the lower end of the vibrating rod, an installation sleeve is connected to the outside of the extension rod, a transmission shaft is installed in the installation sleeve through a second bearing, the lower end of the vibration core rod extends into the extension rod and is connected to the transmission shaft through a speed reduction mechanism, and the lower end of the transmission shaft passes through the installation sleeve and is connected with a transverse stirring rod; a perforated pressing plate is also connected to the bottom of the extension rod.

[0005] Further, in the utility model, a vibration cavity communicated with the inside of the vibrating rod is arranged at the bottom of the upper end plate, and there are two eccentric vibration blocks, which are respectively arranged in the middle of the vibration cavity and the inside of the vibrating rod.

[0006] Further, in the utility model, a threaded connection head and a threaded connection recess are respectively arranged at the upper end and the lower end of the extension rod, and the threaded connection head and the threaded connection recess can be connected by screw threads; the threaded connection head of the extension rod is threadedly connected to the lower end of the vibrating rod, a threaded hole is arranged on the bottom surface of the threaded connection recess of the extension rod, and the perforated pressing plate is threadedly connected to the threaded hole through a threaded column.

[0007] Further, in the utility model, a plurality of extension rods are connected up and down, and the perforated pressing plate is connected to the lowermost extension rod.

[0008] Furthermore, the transverse stirring rod in the utility model is detachably connected to the transmission shaft.

[0009] Furthermore, the speed reduction mechanism in the utility model includes a small gear connected to the vibrating mandrel and a large gear connected to the transmission shaft. The large gear passes through the mounting sleeve and extends into the extension rod to mesh with the small gear for transmission.

[0010] Compared with the prior art, the utility model has the following advantages: The vibrating device of the utility model adopts the combination of the upper end plate and the vibrating rod, which can vibrate the surface and the interior of the concrete on a large area to accelerate the discharge of air bubbles. The length of the vibrating rod can be increased by stacking one or more extension rods, so as to reach deeper depths to help discharge the air bubbles deep inside the concrete. At the same time, the vibrating device also combines the transverse stirring rod and the perforated pressing plate in a composite design, which plays a role in stirring and pressurizing, and speeds up the discharge rate of air bubbles. The transverse stirring rod is designed with a reduced rotation speed to avoid excessive rotation speed affecting the stability of the whole vibrating device. Using the vibrating device of the utility model can greatly shorten the vibrating time, improve the working efficiency and the air bubble removal effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is the external schematic diagram of the device in the first embodiment of the utility model;

[0012] Figure 2 is the internal structure schematic diagram of the device in the first embodiment of the utility model;

[0013] Figure 3 is the device structure schematic diagram of the second embodiment of the utility model.

[0014] Wherein: 1. Upper end plate; 1a. Vibration cavity; 2. Vibrating rod; 3. Vibrating mandrel; 4. First bearing; 5. Eccentric vibration block; 6. Extension rod; 6a. Threaded connection head; 6b. Threaded connection recess; 6c. Threaded hole; 7. Mounting sleeve; 8. Second bearing; 9. Transmission shaft; 10. Transverse stirring rod; 11. Perforated pressing plate; 12. Threaded column; 13. Small gear; 14. Large gear. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The following specifically describes the specific embodiments of the utility model with reference to the accompanying drawings.

[0016] Embodiment 1:

[0017] Combined with Figure 1 、 Figure 2The following shows the first specific embodiment of a precast concrete composite vibrating device of the present utility model, which mainly includes an upper end plate 1, a vibrating rod 2 connected to the upper end plate 1, and a vibrating core rod 3 passing through the upper end plate 1 and extending into the vibrating rod 2. A first bearing 4 is provided inside the upper end plate 1, and two first bearings 4 are provided at intervals up and down inside the vibrating rod 2. The vibrating core rod 3 is rotationally installed with the three first bearings 4, so as to realize the connection between the vibrating core rod 3 and the upper end plate 1 and the vibrating rod 2.

[0018] Two eccentric vibrating blocks 5 are provided on the vibrating core rod 3. A vibrating cavity 1a communicating with the inside of the vibrating rod 2 is provided at the bottom of the upper end plate 1. One of the eccentric vibrating blocks 5 is placed inside the vibrating cavity 1a, and the other eccentric vibrating block 5 is placed in the middle inside the vibrating rod 2 and between the two first bearings 4.

[0019] When the vibrating core rod 3 rotates at a high speed, under the action of the two eccentric vibrating blocks 5, the force is transmitted to the upper end plate 1 and the vibrating rod 2 through the first bearing 4, causing the upper end plate 1 and the vibrating rod 2 to generate high-frequency vibration. The upper end plate 1 can be placed on the surface layer of the concrete, and the vibrating rod 2 is inserted into the concrete interior. The generated high-frequency vibration can drive the large-area vibration of the concrete, thereby accelerating the discharge of air bubbles.

[0020] A extension rod 6 is connected to the lower end of the vibrating rod 2. Threaded connection heads 6a and threaded connection recesses 6b are respectively provided at the upper end and the lower end of the extension rod 6, and the threaded connection heads 6a and the threaded connection recesses 6b can be connected by matching threads. In this embodiment, there is one extension rod 6. The threaded connection head 6a of the extension rod 6 is threadedly connected to the lower end of the vibrating rod 2. A threaded hole 6c is provided on the bottom surface of the threaded connection recess 6b of the extension rod 6 ( Figure 2 not shown in the figure, Figure 3 the specific position where the threaded hole 6c can be seen in the figure). A threaded column 12 is threadedly connected inside the threaded hole 6c. The threaded column 12 is connected to a perforated pressing plate 11. The design of the holes on the perforated pressing plate 11 allows the concrete to pass through and reduces the resistance when the entire vibrating device is lowered. In this embodiment, by adding an extension rod 6 on the basis of the original vibrating rod 2, the extension rod 6 can be driven by the vibrating rod 2 to generate high-frequency vibration, which can drive the large-area vibration of the deeper concrete. At the same time, when the entire vibrating device is lowered, the perforated pressing plate 11 moves downward, applying a squeezing force to the surrounding concrete in contact. Part of the concrete can pass through the holes on the perforated pressing plate 11, and part of the concrete is squeezed and moves towards the edge. The flow of the concrete will drive the air bubbles in the concrete to move upward, making it easier for the air bubbles to be discharged upward.

[0021] On the outer side of the extension rod 6, an installation sleeve 7 is fixedly connected. Inside the installation sleeve 7, a transmission shaft 9 is installed through two second bearings 8 spaced up and down. The transmission shaft 9 is connected to the vibrating mandrel 3 through a speed reduction mechanism. In this embodiment, the speed reduction mechanism includes a small gear 13 and a large gear 14. The lower end of the vibrating mandrel 3 extends into the interior of the extension rod 6 and is connected to the small gear 13, and the upper end of the transmission shaft 9 is connected to the large gear 14. The side wall of the installation sleeve 7 is closely attached and fixed to the side wall of the extension rod 6. An opening is provided at the closely attached part of the installation sleeve 7 and the extension rod 6 to connect their interiors. The large gear 14 inside the installation sleeve 7 passes through the opening and extends into the extension rod 6 to mesh with the small gear 13 for transmission, and the external concrete will not affect the gear transmission.

[0022] The lower end of the transmission shaft 9 passes through the installation sleeve 7 and is connected with a transverse stirring rod 10. The transverse stirring rod 10 is detachably connected to the transmission shaft 9. The transverse stirring rod 10 plays a role in stirring, which can further accelerate the discharge rate of air bubbles. At the same time, the transverse stirring rod 10 is designed with reduced rotation speed to avoid excessive rotation speed affecting the stability of the entire vibrating device.

[0023] Using the vibrating device of the present utility model can greatly shorten the vibrating time and improve the working efficiency and the air bubble removal effect.

[0024] Embodiment Two:

[0025] In this embodiment, in combination with Figure 3 as shown, the difference from Embodiment One is that two extension rods 6 are connected up and down. The threaded connection head 6a of the lower extension rod 6 can be directly screwed into the threaded connection recess 6b of the upper extension rod 6, and the perforated pressing plate 11 is screwed into the threaded hole 6c of the lowermost extension rod 6. The length of the vibrating rod 2 can be further increased by stacking two extension rods 6, so as to reach deeper depths to help discharge the air bubbles deep inside the concrete.

[0026] At the same time, in this embodiment, the transverse stirring rod 10 is disassembled and replaced with a stirring rod with a longer longitudinal length to adapt to the extended longitudinal length of the vibrating rod 2 and not interfere with the perforated pressing plate 11.

[0027] Of course, the above embodiments are only used to illustrate the technical concept and characteristics of the present utility model, and their purpose is to enable those who are familiar with this technology to understand the content of the present utility model and implement it accordingly, and cannot be used to limit the protection scope of the present utility model. All modifications made according to the spirit of the main technical solution of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A precast concrete composite vibrating device, characterized in that: The invention comprises an upper end plate (1), a vibrating rod (2) connected to the upper end plate (1), and a vibrating core rod (3) passing through the upper end plate (1) and extending into the interior of the vibrating rod (2); the vibrating core rod (3) is connected to the upper end plate (1) and the vibrating rod (2) via a first bearing (4), respectively; an eccentric vibrating block (5) is provided on the vibrating core rod (3); the lower end of the vibrating rod (2) is connected to an extension rod (6); the exterior of the extension rod (6) is connected to a mounting sleeve (7); a transmission shaft (9) is mounted in the mounting sleeve (7) via a second bearing (8); the lower end of the vibrating core rod (3) extends into the interior of the extension rod (6) and is connected to the transmission shaft (9) via a speed reduction mechanism; the lower end of the transmission shaft (9) passes through the mounting sleeve (7) and is connected to a transverse stirring rod (10); and the bottom of the extension rod (6) is also connected to a pressure plate (11) with a hole.

2. A precast concrete composite vibrating device according to claim 1, characterized in that: The bottom of the upper end plate (1) is provided with a vibration cavity (1a) which is connected to the interior of the vibrating rod (2), and the eccentric vibration block (5) comprises two blocks, which are respectively arranged in the vibration cavity (1a) and in the middle of the interior of the vibrating rod (2).

3. A precast concrete composite vibrating device according to claim 1, characterized in that: The upper end and the lower end of the extension rod (6) are respectively provided with a threaded connection head (6a) and a threaded connection recess (6b), and the threaded connection head (6a) and the threaded connection recess (6b) can be threadedly connected; the threaded connection head (6a) of the extension rod (6) is threadedly connected to the lower end of the vibrating rod (2), and the bottom surface of the threaded connection recess (6b) of the extension rod (6) is provided with a threaded hole (6c), and the perforated pressure plate (11) is threadedly connected to the threaded hole (6c) via a threaded column (12).

4. A precast concrete composite vibrating device according to claim 3, characterized in that: The extension rod (6) is connected to a plurality of extension rods (6) at the top and bottom, and the perforated pressure plate (11) is connected to the extension rod (6) at the bottom.

5. The precast concrete composite vibrating device according to claim 1, characterized in that: The transverse stirring rod (10) is detachably connected to the transmission shaft (9).

6. The precast concrete composite vibrating device according to claim 1, characterized in that: The speed reduction mechanism comprises a small gear (13) connected to the vibration core rod (3) and a large gear (14) connected to the transmission shaft (9); the large gear (14) passes through the mounting sleeve (7) and extends into the extension rod (6) to mesh with the small gear (13) for transmission.

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