Special normal-pressure high-frequency motor built-in concrete vibrator for equipment

Abstract

The utility model discloses a concrete vibrator with a built-in normal-pressure high-frequency motor special for equipment, and belongs to the technical field of engineering machinery. According to the technical scheme, the front end of a sleeve of the vibrator is connected with a pointed end through threads, and an oil cover, two sets of lower bearings, an oil seal cover, a coil inserting stator and a bearing seat are sequentially arranged in the sleeve; an upper bearing is arranged in the bearing seat, a rotor is supported by the lower bearing and the upper bearing, and an eccentric block and an oil suction pipe are arranged at the lower end of the rotor; the upper end of the sleeve is connected with an upper cover through threads, a wiring terminal and a wiring seat are arranged in the upper cover, a cable is fixed on the wiring terminal through a thread pair I, the cable is connected with a frequency conversion control cabinet fixed on equipment, and an electronic frequency converter and a grounding wire are arranged in the frequency conversion control cabinet. The upper cover is connected with four symmetrically-arranged rubber springs through a connecting pipe and a lower clamping plate and is connected with equipment through an upper clamping plate and an equipment connecting plate by using a thread pair II. The vibrator has the advantages of overcoming the defects of an existing vibrator for equipment, and being novel in design, reasonable in structure, safe and reliable.

Description

Technical Field

[0001] The invention discloses a special equipment-specific normal-pressure high-frequency motor built-in concrete vibrator, which belongs to the technical field of engineering machinery. Background Art

[0002] With the continued rapid development of my country's national economy, construction, railway, highway, and water conservancy projects are increasingly requiring concrete vibrators installed on equipment such as slipform machines, pavers, hoisting equipment, and robotic arms to ensure concrete compaction and structural quality. Currently, concrete vibrators used in various equipment include flat plate vibrators, planetary insert vibrators, and high-frequency pneumatic external vibrators. Flat plate vibrators are only suitable for shallow concrete compaction and are incapable of compacting the underlying concrete layer in thicker concrete structures. Planetary insert vibrators also have the disadvantage of requiring manual operation due to the need for tapping upon activation. High-frequency pneumatic external vibrators require an air compressor and share the same drawbacks as flat plate vibrators. Handheld low-voltage motor-mounted vibrators were previously available for use in the construction industry. However, due to the low voltage and high current, the stator windings required thick magnet wire, which was difficult to unwind and complicated to manufacture. Furthermore, the frequency conversion required a mechanical inverter, which was bulky and heavy, making it inconvenient and labor-intensive for workers to operate. Consequently, they are now rarely used. Therefore, there is an urgent need to innovate and develop a concrete vibrator suitable for equipment-specific use to meet the urgent needs of the fields of construction, railways, highways, and hydraulic engineering. Summary of the Invention

[0003] The purpose of the utility model is to innovatively develop a special equipment-specific normal pressure high frequency motor built-in concrete vibrator to meet the urgent needs of the fields of construction, railways, highways, hydraulic engineering, etc.

[0004] The technical solution of the utility model is that the front end of the casing of the vibrator is connected to the tip by a thread, and the oil cover, two sets of lower bearings, an oil seal cover, an embedded wire stator and a bearing seat are sequentially installed in the casing; the upper bearing is installed in the bearing seat, the lower bearing and the upper bearing support the rotor, and the lower end of the rotor is equipped with an eccentric block and an oil suction pipe; the upper end of the casing is connected to the upper cover by a thread, and the upper cover is equipped with wiring terminals and a wiring seat, the wiring terminals are fixed with a I thread pair to the cable, the cable is connected to a frequency conversion control cabinet fixed on the equipment, the frequency conversion control cabinet is equipped with an electronic frequency converter and a grounding wire, the upper cover is connected to four symmetrically arranged rubber springs through a pipe and a lower splint and is connected to the equipment through an upper splint and an equipment connecting plate with a II thread pair.

[0005] Furthermore, an O-ring is installed at the threaded connection between the tip and the sleeve, the eccentric block is fixed to the lower end of the rotor with a flat key, and the oil suction pipe connected to the lower end of the rotor is used to bring lubricating oil to the upper part to fully lubricate the lower bearing and the upper bearing. The embedded stator is fixed in the sleeve with cylindrical pin I, and the bearing seat is axially and circumferentially positioned with a retaining ring and cylindrical pin II. A positioning sleeve is installed between the two sets of lower bearings, and the oil seal cover is equipped with oil seal I, which seals the stator winding together with oil seal II. The circumference of the stator winding is insulated with an insulating sleeve, and a grounding wire is provided to provide reliable grounding protection for the machine.

[0006] The beneficial effects of the utility model are: effectively overcoming the various drawbacks of concrete vibrators used in existing equipment, being suitable for the need of high-frequency vibration required for concrete vibration compaction, and meeting the urgent requirements of construction in the fields of construction, railways, roads, water conservancy, etc., being able to self-start vibration, penetrate deep into the concrete structure, and ensure the quality of vibration compaction, and the original rubber spring has a good vibration reduction effect, making concrete construction mechanized and intelligent, reducing the labor intensity of workers, having high working efficiency, and good compaction effect, and having a novel design, reasonable structure, comfortable operation, easy maintenance, and safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a half-section schematic diagram of the structure of the present utility model.

[0008] Figure 2 It is a connection diagram of the present utility model. DETAILED DESCRIPTION

[0009] The details and working process of the present invention are described in detail with reference to the accompanying drawings of the present invention. The front end of the vibrator's sleeve 5 is connected to the tip 1 with a thread, and the sleeve 5 is successively equipped with an oil cover 3, two sets of lower bearings 9, an oil seal cover 10, an embedded stator 13 and a bearing seat 18; the bearing seat 18 is equipped with an upper bearing 19, and the lower bearing 9 and the upper bearing 19 support the rotor 12. The lower end of the rotor 12 is equipped with an eccentric block 6 and an oil suction pipe 2; the upper end of the sleeve 5 is connected to the upper cover 29 with a thread, and the upper cover 29 is equipped with a terminal 30 and a terminal block 31. The terminal 30 is fixed with a three-phase four-core cable 26 with a I thread pair 20. The cable 26 is connected to a frequency conversion control cabinet 35 fixed on the equipment 28. The frequency conversion control cabinet 35 is equipped with an electronic frequency converter 33 and a grounding wire 34. The upper cover 29 is connected to four symmetrically arranged rubber springs 23 through the pipe 21 and the lower splint 22 and is connected to the equipment 28 with a II thread pair 25 through the upper splint 24 and the equipment connecting plate 27.

[0010] Furthermore, an O-ring 4 is installed at the threaded connection between the tip 1 and the sleeve 5, the eccentric block 6 is fixed to the lower end of the rotor 12 with a flat key 7, and the oil suction pipe 2 connected to the lower end of the rotor 12 is used to bring lubricating oil to the upper part to fully lubricate the lower bearing 9 and the upper bearing 19. The embedded stator 13 is fixed in the sleeve 5 with a cylindrical pin 14 of type I, and the bearing seat 18 is axially and circumferentially positioned with a retaining ring 15 and a cylindrical pin 17 of type II. A positioning sleeve 8 is installed between the two sets of lower bearings 9, and an oil seal 11 of type I is installed in the oil seal cover 10, which seals the stator winding together with the oil seal 16. The circumference of the stator winding is insulated with an insulating sleeve 32, and a grounding wire 34 is provided to provide reliable grounding protection for the machine.

[0011] After the concrete pouring operation, the device is powered on. Electricity, flowing through the cable, drives the embedded stator 13 to drive the rotor 12. The eccentrically rotating eccentric mass 6 generates an exciting force that penetrates the concrete structure through the sleeve 5 and its tip 1, vibrating the concrete. This disturbing force overcomes the frictional resistance between the concrete mix, causing it to flow, allowing relative motion and rearrangement, and dissipating air trapped between the concrete mix, thereby compacting the concrete structure. This vibrator overcomes the drawbacks of planetary insert vibrators, which require a tapping action during startup, and the inability of flat-plate vibrators to compact the underlying concrete. It also eliminates the need for an air compressor, as required by high-frequency pneumatic external vibrators. The unique symmetrically arranged rubber springs 23 have proven effective in actual project use, demonstrating successful field application in multiple projects. This innovative, specially designed, atmospheric pressure motor-mounted concrete vibrator offers significant social and economic benefits. By utilizing atmospheric pressure, the current is reduced to one-fifth of its original value, and the amount of magnet wire used in the stator winding is also reduced to one-fifth. This facilitates production line operation, simplifies the process, and significantly reduces costs. The utility model uses an electronic frequency converter for frequency conversion, is compact and lightweight, and can flexibly adjust the frequency and excitation force for different concrete structures, so that the vibrated concrete structures can achieve better vibration compaction. The beneficial effects of the utility model are: effectively overcoming the various drawbacks of existing equipment concrete vibrators, being suitable for the needs of high-frequency vibration required for concrete vibration compaction, and meeting the urgent requirements of construction in the fields of construction, railways, highways, hydraulic engineering, etc., can self-start vibration, penetrate deep into the concrete structure, and ensure the quality of vibration compaction. The original rubber spring has a good vibration reduction effect, making concrete construction mechanized and intelligent, reducing the labor intensity of workers, and achieving high work efficiency and good compaction effect. It has a novel design, a reasonable structure, comfortable operation, simple maintenance, and is safe and reliable.

Claims

1. A special equipment-specific normal pressure high frequency motor built-in concrete vibrator, characterized by: The front end of the vibrator sleeve (5) is connected to the tip (1) by a thread, and the sleeve (5) is equipped with an oil cover (3), two sets of lower bearings (9), an oil seal cover (10), a wire-embedded stator (13) and a bearing seat (18) in sequence; the bearing seat (18) is equipped with an upper bearing (19), and the lower bearing (9) and the upper bearing (19) support the rotor (12). The lower end of the rotor (12) is equipped with an eccentric block (6) and an oil suction pipe (2); the upper end of the sleeve (5) is connected to the upper cover (29) by a thread, and the upper cover (29) is equipped with a terminal (30) and a connection terminal. The wire holder (31) and the terminal block (30) are fixed with a three-phase four-core cable (26) by means of a threaded pair (20) of I. The cable (26) is connected to a frequency conversion control cabinet (35) fixed on the equipment (28). The frequency conversion control cabinet (35) is equipped with an electronic frequency converter (33) and a grounding wire (34). The upper cover (29) is connected to four symmetrically arranged rubber springs (23) through a pipe (21) and a lower clamping plate (22) and is connected to the equipment (28) by means of a threaded pair (25) of II through an upper clamping plate (24) and an equipment connection plate (27).

2. The equipment-specific normal pressure high frequency motor built-in concrete vibrator according to claim 1 is characterized by: An O-ring (4) is installed at the threaded connection between the tip (1) and the sleeve (5). The eccentric block (6) is fixed to the lower end of the rotor (12) with a flat key (7). The oil suction pipe (2) connected to the lower end of the rotor (12) is used to bring lubricating oil to the upper part to fully lubricate the lower bearing (9) and the upper bearing (19). The embedded stator (13) is fixed in the sleeve (5) with a cylindrical pin I (14). The bearing seat (18) is axially and circumferentially positioned with a retaining ring (15) and a cylindrical pin II (17). A positioning sleeve (8) is installed between the two sets of lower bearings (9). The oil seal cover (10) is equipped with an oil seal I (11), which together with the oil seal II (16) seals the stator winding. The circumference of the stator winding is insulated and protected by an insulating sleeve (32). A grounding wire (34) is provided to provide reliable grounding protection for the machine.

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