Variable frequency concrete vibrator

Abstract

The utility model discloses a variable frequency concrete vibrator belongs to concrete vibrator technical field, and its technical key points include the stick cylinder of both ends conduction, the mounting seat is equipped with in the stick cylinder, is equipped with eccentric rotation subassembly in the mounting seat, is equipped with the limit structure between the stick cylinder and the mounting seat, the one end detachably equipped with the connector of stick cylinder, is equipped with the variable frequency motor that is connected with eccentric rotation subassembly in the connector, the other end detachably equipped with the arc end cover of stick cylinder, is equipped with the pressure sensor that is matched with variable frequency motor in the arc end cover, the connector and arc end cover are provided with the sealing connecting piece between stick cylinder respectively, the utility model aims at providing a kind of variable frequency concrete vibrator with simple result, convenient to disassemble, is used for concrete vibration.

Description

Technical Field

[0001] This utility model relates to a concrete vibrator, and more specifically, to a frequency conversion concrete vibrator. Background Technology

[0002] Due to the varying complexity of poured structures, the increasing reinforcement ratios and embedded parts, the on-site vibration process for concrete is difficult to automate and still requires manual operation. Currently, workers generally use fixed-frequency vibrators, judging the concrete's density by the feel of the vibrator when inserted into the concrete, the vibration time, and the appearance of surface slurry. This method relies heavily on workers' long-term experience and subjective judgment, leading to instability in vibration quality and making it impossible to guarantee the density and strength of concrete components.

[0003] The utility model patent with authorization announcement number CN223227075U discloses an automatic variable frequency concrete vibrator, including a vibrator body, connectors and a rod head connected to the upper and lower ends of the vibrator body. A rotating shaft is installed inside the vibrator body, and an eccentric block is provided on the rotating shaft. A motor is provided in the upper part of the vibrator body, and the rotating shaft is connected to the motor. The motor is connected to a frequency converter. A pressure sensor is provided inside the bottom of the vibrator body. A sealing protrusion is covered on the pressure sensor, and a sealing cover is covered on the sealing protrusion. The rod head is connected to the vibrator body through a sealing sleeve. The sealing sleeve is fixedly connected to the lower end of the vibrator body. The rod head is installed in the sealing sleeve through a limiting floating mechanism. The upper end of the rod head abuts against the sealing cover, so that the sealing cover, sealing protrusion and pressure sensor are in close contact. The pressure sensor is connected to the frequency converter.

[0004] This type of vibratory rod has its shaft mounted inside the body via a bearing. Because the vibratory rod body is quite long and one end of the body is closed, the bearing located at the bottom of the vibratory rod body is difficult to disassemble and assemble. When the bearing, shaft, or eccentric block is damaged, it is difficult to replace it. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of the prior art by providing a variable frequency concrete vibrator that is simple to assemble and disassemble.

[0006] The technical solution of this utility model is implemented as follows: a variable frequency concrete vibrator includes a rod cylinder with conductive ends, a mounting seat is provided inside the rod cylinder, an eccentric rotation component is provided inside the mounting seat, and a limiting structure is provided between the rod cylinder and the mounting seat.

[0007] One end of the rod cylinder is detachably provided with a connector, and a variable frequency motor connected to the eccentric rotation component is provided inside the connector; the other end of the rod cylinder is detachably provided with an arc-shaped end cap, and a pressure sensor that cooperates with the variable frequency motor is provided inside the arc-shaped end cap; sealing connectors are respectively provided between the connector and the arc-shaped end cap and the rod cylinder.

[0008] In the aforementioned variable frequency concrete vibrator, the eccentric rotation component includes bearings disposed at both ends of the mounting base, and a rotating shaft connected to a variable frequency motor is provided on the bearings; at least one eccentric block is evenly distributed along the axial direction on the rotating shaft.

[0009] In the aforementioned variable frequency concrete vibrator, a limiting block is provided near the upper end of the mounting base, and the bottom surface of the bearing located at the upper end of the mounting base cooperates with the limiting block.

[0010] In the aforementioned variable frequency concrete vibrator, the mounting base includes a ring tube adapted to the inner diameter of the barrel, and a clearance elongated hole is provided on the side wall of the ring tube.

[0011] In the aforementioned variable frequency concrete vibrator, the limiting structure includes a positioning groove on the inner wall of the cylinder, and a positioning strip on the mounting base that mates with the positioning groove; the outer end of the positioning strip and the inner wall of the positioning groove are both arc-shaped.

[0012] In the aforementioned variable frequency concrete vibrator, the sealing connector includes threaded sections respectively provided on the outer walls of the rod cylinder, connector, and arc-shaped end cap, with connecting rings threadedly connected to the threaded sections; a first sealing ring and a second sealing ring are respectively provided at the upper and lower ends near the inner wall of the connecting ring, and the first sealing ring and the second sealing ring are interference-fitted with the corresponding outer walls of the rod cylinder, connector, or arc-shaped end cap.

[0013] In the aforementioned variable frequency concrete vibrator, both the arc-shaped end cap and the upper end near the barrel are provided with limiting rings. The upper end of the limiting ring is provided with an inclined sealing part, and the lower end of the connecting ring is provided with an inclined mounting part that cooperates with the inclined sealing part. The inclined mounting part is provided with an annular groove for installing a second sealing ring.

[0014] With the above-mentioned structure, the bearing and shaft are installed in the mounting base and then inserted into the rod cylinder. The rod cylinder with open ends makes it easy to remove the mounting base when parts need to be replaced. After removing the mounting base, the bearing and shaft can be exposed, which facilitates the disassembly and replacement of various parts.

[0015] Meanwhile, the detachable connectors at both ends and the arc-shaped end caps facilitate the disassembly and assembly of the frequency converter motor and pressure sensor. The sealing connectors seal the connection points to prevent concrete from entering the barrel through the connection gaps. Attached Figure Description

[0016] The present invention will be further described in detail below with reference to the embodiments shown in the accompanying drawings, but this does not constitute any limitation on the present invention.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0019] Figure 3 This is a schematic diagram of the structure of the rod cylinder of this utility model.

[0020] Figure 4 This is a structural schematic diagram of the mounting base of this utility model.

[0021] Figure 5 This is a partial structural diagram of point A of this utility model.

[0022] Figure 6 This is a schematic diagram of the connecting ring structure of this utility model.

[0023] In the diagram: 1. Bar cylinder; 2. Mounting base; 2a. Ring tube; 2b. Clearance elongated hole; 3. Eccentric rotating assembly; 3a. Bearing; 3b. Rotating shaft; 3c. Eccentric block; 3d. Limiting block; 4. Limiting structure; 4a. Positioning groove; 4b. Positioning strip; 5. Connector; 6. Variable frequency motor; 7. Arc-shaped end cap; 8. Pressure sensor; 9. Sealing connector; 9a. Threaded section; 9b. Connecting ring; 9c. First sealing ring; 9d. Second sealing ring; 9e. Limiting ring; 9f. Inclined sealing part; 9g. Inclined mounting part; 9h. Ring groove. Detailed Implementation

[0024] See Figure 1-6 As shown, a variable frequency concrete vibrator of this utility model includes a rod cylinder 1 with conductive ends, a mounting base 2 is provided inside the rod cylinder 1, an eccentric rotating component 3 is provided inside the mounting base 2, and a limiting structure 4 is provided between the rod cylinder 1 and the mounting base 2.

[0025] The bearing and shaft are mounted on the mounting base and then inserted into the barrel. The barrel, which is open at both ends, makes it easy to remove the mounting base when parts need to be replaced. After removing the mounting base, the bearing and shaft are exposed, which facilitates the disassembly and replacement of various parts.

[0026] One end of the rod cylinder 1 is detachably equipped with a connector 5, within which a variable frequency motor 6 connected to the eccentric rotation assembly 3 is housed. The other end of the rod cylinder 1 is detachably equipped with an arc-shaped end cap 7, within which a pressure sensor 8, cooperating with the variable frequency motor 6, is housed. Sealing connectors 9 are respectively provided between the connector 5 and the arc-shaped end cap 7 and the rod cylinder 1. The detachable connectors and arc-shaped end caps facilitate the disassembly and assembly of the variable frequency motor and pressure sensor, while the sealing connectors seal the connection points, preventing concrete from entering the rod cylinder through the connection gaps.

[0027] A wiring groove is provided on the inner wall of the rod cylinder for wiring connection between the pressure sensor and the variable frequency motor. The variable frequency motor can be a single variable frequency motor or a combination of a frequency converter and a motor. These are common knowledge to those skilled in the art and will not be elaborated here.

[0028] In this embodiment, preferably, the eccentric rotation assembly 3 includes bearings 3a disposed at both ends of the mounting base 2, and a rotating shaft 3b connected to the variable frequency motor 6 is provided on the bearings 3a; at least one eccentric block 3c is evenly distributed along the axial direction on the rotating shaft 3b.

[0029] Furthermore, a limiting block 3d is provided near the upper end of the mounting base 2, and the bottom surface of the bearing 3a located at the upper end of the mounting base 2 cooperates with the limiting block 3d. After the bearing is inserted through the opening at the upper end of the mounting base, it is positioned by the limiting block, thus limiting the bearing when the rotating shaft is installed on the bearing, preventing the rotating shaft from pushing the bearing and affecting the installation of the rotating shaft.

[0030] In this embodiment, preferably, the mounting base 2 includes an annular tube 2a adapted to the inner diameter of the barrel 1, and a clearance elongated hole 2b is provided on the side wall of the annular tube 2a. When internal parts are damaged, the mounting base can be removed and the internal rotating shaft and eccentric block can be easily observed through the clearance elongated hole to facilitate the determination of the damage. Furthermore, when disassembling the bearing, a tool can be inserted through the clearance elongated hole to push the bearing out, making bearing disassembly convenient.

[0031] In this embodiment, preferably, the limiting structure 4 includes a positioning groove 4a disposed on the inner wall of the rod cylinder 1, and a positioning strip 4b disposed on the mounting base 2 to cooperate with the positioning groove 4a; the outer end of the positioning strip 4b and the inner sidewall of the positioning groove 4a are both arc-shaped. At least one positioning groove is provided. To improve the limiting capability, two positioning grooves can be provided on the inner wall of the rod cylinder, and two positioning strips are also provided on the corresponding mounting base for cooperation.

[0032] In this embodiment, the length of the mounting base is greater than the length of the rod cylinder. Therefore, positioning grooves are also provided on the inner wall of the connector and the arc-shaped end cap for fitting and installation with the two ends of the positioning strip.

[0033] In this embodiment, preferably, the sealing connector 9 includes threaded sections 9a respectively disposed on the outer walls of the rod cylinder 1, the connector 5, and the arc-shaped end cap 7, with a connecting ring 9b threadedly connected to the threaded section 9a; a first sealing ring 9c and a second sealing ring 9d are respectively provided at the upper and lower ends near the inner wall of the connecting ring 9b, and the first sealing ring 9c and the second sealing ring 9d are interference-fitted with the corresponding outer walls of the rod cylinder 1, the connector 5, or the arc-shaped end cap 7. Through the interference fit between the first sealing ring and the second sealing ring and the outer wall, a seal is effectively formed while preventing the connecting ring from rotating along the thread and falling off due to prolonged vibration.

[0034] Furthermore, both the arc-shaped end cap 7 and the upper proximal end of the rod cylinder 1 are provided with limiting rings 9e. The upper end of the limiting ring 9e has an inclined sealing portion 9f, and the lower end of the connecting ring 9b has an inclined mounting portion 9g that mates with the inclined sealing portion 9f. The inclined mounting portion 9g has an annular groove 9h for installing the second sealing ring 9d. The limiting rings limit the connecting ring, ensuring that it can be quickly tightened to the appropriate position when screwed on. Furthermore, the limiting rings also limit the connection during vibration, further preventing the connecting ring from moving downwards along the threads and falling off due to prolonged vibration. Simultaneously, the inclined sealing portion and the inclined mounting portion cooperate to form an inclined surface, improving the sealing effect between them.

[0035] During operation, the assembled vibratory rod is inserted into the concrete, and the external power supply drives the variable frequency motor. The shaft rotates at high speed with the eccentric block, and the force is transmitted to the entire vibratory rod through the mounting base, causing the vibratory rod to vibrate at high frequency. During the vibration process, a pressure sensor monitors the vibration pressure in real time, and the variable frequency motor controls the vibration frequency based on the pressure value detected by the pressure sensor.

[0036] The above-described embodiments are preferred embodiments of the present utility model and are only used to facilitate the illustration of the present utility model. They are not intended to limit the present utility model in any way. Any person skilled in the art who makes partial modifications or alterations to the technical content disclosed in the present utility model without departing from the scope of the technical features of the present utility model shall still fall within the scope of the technical features of the present utility model.

Claims

1. A variable frequency concrete vibrator, comprising a rod cylinder (1) with conductive ends, characterized in that, The rod cylinder (1) is fitted with a mounting base (2), and an eccentric rotating component (3) is provided inside the mounting base (2). A limiting structure (4) is provided between the rod cylinder (1) and the mounting base (2). One end of the rod cylinder (1) is detachably provided with a connector (5), and a variable frequency motor (6) connected to the eccentric rotation assembly (3) is provided inside the connector (5); the other end of the rod cylinder (1) is detachably provided with an arc-shaped end cap (7), and a pressure sensor (8) cooperating with the variable frequency motor (6) is provided inside the arc-shaped end cap (7); sealing connectors (9) are respectively provided between the connector (5) and the arc-shaped end cap (7) and the rod cylinder (1).

2. The variable frequency concrete vibrator according to claim 1, characterized in that, The eccentric rotating assembly (3) includes bearings (3a) disposed at both ends of the mounting base (2), and a rotating shaft (3b) connected to the variable frequency motor (6) is provided on the bearings (3a); at least one eccentric block (3c) is evenly distributed along the axial direction on the rotating shaft (3b).

3. A variable frequency concrete vibrator according to claim 2, characterized in that, A limiting block (3d) is provided at the upper end near the mounting base (2), and the bottom surface of the bearing (3a) located at the upper end of the mounting base (2) cooperates with the limiting block (3d).

4. A variable frequency concrete vibrator according to claim 1, characterized in that, The mounting base (2) includes an annular tube (2a) adapted to the inner diameter of the rod tube (1), and a clearance elongated hole (2b) is provided on the side wall of the annular tube (2a).

5. A variable frequency concrete vibrator according to claim 1, characterized in that, The limiting structure (4) includes a positioning groove (4a) provided on the inner wall of the rod cylinder (1), and a positioning strip (4b) provided on the mounting base (2) to cooperate with the positioning groove (4a); the outer end of the positioning strip (4b) and the inner wall of the positioning groove (4a) are both arc-shaped.

6. A variable frequency concrete vibrator according to claim 1, characterized in that, The sealing connector (9) includes a threaded section (9a) respectively provided on the outer wall of the rod cylinder (1), the connector (5) and the arc-shaped end cap (7), and a connecting ring (9b) is threadedly connected to the threaded section (9a); a first sealing ring (9c) and a second sealing ring (9d) are respectively provided at the upper and lower ends near the inner wall of the connecting ring (9b), and the first sealing ring (9c) and the second sealing ring (9d) are interference fit with the corresponding outer wall of the rod cylinder (1), the connector (5) or the arc-shaped end cap (7).

7. A variable frequency concrete vibrator according to claim 6, characterized in that, The upper end of the arc-shaped end cap (7) and the rod cylinder (1) are both provided with a limiting ring (9e). The upper end of the limiting ring (9e) is provided with an inclined sealing part (9f). The lower end of the connecting ring (9b) is provided with an inclined mounting part (9g) that cooperates with the inclined sealing part (9f). The inclined mounting part (9g) is provided with an annular groove (9h) for installing the second sealing ring (9d).

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