A grouting pipe hopper docking device based on electromagnet effect

Abstract

The present invention relates to a grouting pipe-hopper docking device based on the electromagnet effect. The device comprises an electromagnet assembly mounted on the grouting pipe and a traction assembly mounted on the hopper. The electromagnet assembly includes an iron core positioned at the grouting pipe orifice, an excitation coil disposed around the iron core, an armature mounted on the grouting pipe and positioned above the iron core, and a power supply connected to the excitation coil. The traction assembly comprises an annular cast iron ring positioned at the hopper's discharge port. Compared to existing technologies, the present invention can quickly dock the grouting pipe with the hopper, effectively reducing the time required to move and dock the hopper with the grouting pump truck during large-volume concrete pouring.

Description

Technical Field

[0001] The invention belongs to the technical field of grouting pipe hopper docking, and relates to a grouting pipe hopper docking device based on an electromagnet effect. Background Art

[0002] Currently, during large-volume concrete pouring, when the hopper and conduit reach a certain level of concrete pouring, the grouting pipe must be pulled out, the conduit moved to the next discharge point, and the grouting pipe lowered again to connect with the hopper. This method requires the grouting pipe to be lifted and lowered each time it moves to the next discharge point, and manual re-alignment is required each time. This results in low control accuracy, low efficiency, and a long labor-intensive process. Summary of the Invention

[0003] The purpose of the present invention is to provide a grouting pipe hopper docking device based on the electromagnet effect, which uses electromagnets to control magnetization and demagnetization, thereby improving the positioning accuracy of the grouting pipe during movement, ensuring that the grouting pipe and the hopper are quickly and stably docked without affecting the extraction.

[0004] The purpose of the present invention can be achieved by the following technical solutions:

[0005] A grouting pipe-hopper docking device based on the electromagnet effect consists of an electromagnet assembly installed on the grouting pipe and a traction assembly arranged on the hopper, wherein the electromagnet assembly includes an iron core arranged at the pipe mouth of the grouting pipe, an excitation coil arranged around the iron core, an armature installed on the grouting pipe and located above the iron core, and a power supply connected to the excitation coil; the traction assembly includes an annular pig iron ring arranged at the discharge port of the hopper.

[0006] Furthermore, the traction assembly includes a plurality of pig iron bars symmetrically arranged around the upper platform of the hopper.

[0007] Furthermore, the upper platform of the hopper is square, and the pig iron bars are arranged on the inner side wall of the upper platform of the hopper. More preferably, there are four pig iron bars, each of which has the same size and is symmetrically arranged in the middle of the four inner sides of the upper platform of the hopper.

[0008] Furthermore, the armature is slidably arranged on the grouting pipe.

[0009] Furthermore, the travel of the armature on the grouting pipe satisfies the following conditions: when the iron core on the grouting pipe reaches the discharge port of the hopper and is attracted by the annular pig iron ring, the armature just slides to the center point of all the pig iron bars.

[0010] Furthermore, the power supply is a DC power supply.

[0011] Furthermore, the iron core is made of silicon steel sheets and is evenly distributed around the grouting pipe.

[0012] Compared to existing technologies, this invention utilizes the electromagnet effect, enabling the electromagnet and the traction device to provide external force that facilitates docking of the grouting pipe during movement. This effectively improves the low precision of manual pump control and reduces the time required for fine-tuning and centering. The device is quick and easy to operate, has a simple structure, and is inexpensive to manufacture. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the electromagnet assembly of the present invention;

[0014] Figure 2 This is a schematic diagram of the main structure of the traction assembly of the present invention;

[0015] Figure 3 is a schematic top view of the traction assembly of the present invention;

[0016] Description of the marks in the figure:

[0017] 1- iron core, 2- armature, 3- exciting coil, 4- power supply, 5- pig iron bar, 6- annular pig iron ring, 7- grouting pipe, 8- hopper. DETAILED DESCRIPTION

[0018] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0019] In the following embodiments, unless otherwise specified, functional components or structures are conventional components or structures used in the art to achieve corresponding functions.

[0020] Example 1

[0021] A grouting pipe hopper docking device based on the electromagnet effect, such as Figures 1 to 3 As shown, it consists of an electromagnet assembly installed on the grouting pipe 7 and a traction assembly arranged on the hopper 8, wherein the electromagnet assembly includes an iron core 1 arranged at the pipe mouth of the grouting pipe 7, an excitation coil 3 arranged around the iron core 1, an armature 2 installed on the grouting pipe 7 and located above the iron core 1, and a power supply 4 connected to the excitation coil 3; the traction assembly includes an annular pig iron ring 6 arranged at the discharge port of the hopper 8, and a plurality of pig iron bars 5 symmetrically arranged around the upper platform of the hopper 8.

[0022] Please see again Figure 2 and Figure 3As shown, the upper platform of the hopper 8 is square, and the pig iron bars 5 are arranged on the inner side wall of the upper platform of the hopper 8. More preferably, there are four pig iron bars 5, and each pig iron bar 5 has the same size and is symmetrically arranged in the middle position of the four inner sides of the upper platform of the hopper 8.

[0023] Please see again Figure 2 and Figure 3 As shown, the armature 2 is slidably mounted on the grouting pipe 7. The armature 2 travels along the grouting pipe 7 such that, when the iron core 1 on the grouting pipe 7 reaches the discharge port of the hopper 8 and is attracted by the annular pig iron ring 6, the armature 2 is positioned exactly at the center of all the pig iron bars 5. The power supply 4 is a DC power supply. The iron core 1 is made of silicon steel sheets and is evenly distributed around the grouting pipe 7.

[0024] The working principle of this embodiment is as follows:

[0025] Before commencing operation, the pump truck's grouting pipe 7 is manually moved to a position above the hopper 8. The DC power supply is then turned on. An electromagnet, formed around the grouting pipe 7 via the iron core 1, armature 2, and excitation coil 3, generates a stable magnetic field, exerting a magnetic force on the platform surrounding the hopper 8. When the coil is energized, the iron core 1 and armature 2 become magnetized due to electromagnetic induction, becoming two magnets with opposite polarities and generating an electromagnetic attraction between them. When the grouting pipe 7, along with the iron core 1, armature 2, and excitation coil 3, approaches the four pig iron bars 5, the four pig iron bars 5 are also magnetized by the electromagnet. Each pig iron bar has a magnetic property opposite to that of the iron core 1, that is, the same as that of the armature 2. Consequently, each of the four pig iron bars 5 exerts a repulsive force on the armature 1. Since the pig iron bars are all the same size, the repulsive forces are also of equal magnitude. Therefore, the combined force of the four repulsive forces cancels each other out horizontally, causing the grouting pipe 7 to achieve horizontal equilibrium. In the vertical direction, the resultant force generated by the repulsive force and the resultant force of the weight of the grouting pipe 7, the iron core 1, and the armature 2 also cancel each other out, so that the grouting pipe 7 also reaches balance in the vertical direction. Based on this, the balanced repulsive force generated by the four identical pig iron bars 5 around the hopper 8 can make the grouting pipe 7 stably stop directly above the hopper 8 platform, that is, directly above the annular pig iron ring 6. Then, the grouting pipe 7 continues to be lowered directly above the hopper 8 platform. After the grouting pipe 7 is pushed into place, the electromagnet reaches the annular pig iron ring 6 at the discharge port. The electromagnet attracts the annular pig iron ring 6 to fix the grouting pipe 7 to the discharge port of the hopper 8. After the grouting is completed, the electromagnet assembly stops working, the DC power supply is cut off, the excitation coil 3 is demagnetized, the electromagnet stops attracting the annular pig iron ring 6, and the pump is controlled to lift the grouting pipe 7, completing a round of grouting construction.

[0026] The above description of the embodiments is intended to facilitate understanding and use of the invention by those skilled in the art. It will be apparent that those skilled in the art can readily make various modifications to these embodiments and apply the general principles described herein to other embodiments without requiring inventive effort. Therefore, the present invention is not limited to the above-described embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of the present invention, without departing from the scope of the present invention, should be within the scope of protection of the present invention.

Claims

1. A grouting pipe hopper docking device based on electromagnet effect, characterized in that: The device consists of an electromagnet assembly mounted on a grouting pipe and a traction assembly mounted on a hopper. The electromagnet assembly includes an iron core mounted at the grouting pipe orifice, an excitation coil arranged around the iron core, an armature mounted on the grouting pipe and located above the iron core, and a power supply connected to the excitation coil. The traction assembly includes an annular pig iron ring mounted at the discharge port of the hopper and a plurality of pig iron bars symmetrically arranged around the upper platform of the hopper. The upper platform of the hopper is square, and the pig iron bars are arranged on the inner side wall of the upper platform of the hopper; There are four pig iron bars, which are symmetrically arranged in the middle of the four inner sides of the upper platform of the hopper; Each pig iron bar is the same size; The armature is slidably arranged on the grouting pipe; The travel of the armature on the grouting pipe satisfies the following conditions: when the iron core on the grouting pipe reaches the discharge port of the hopper and is attracted by the annular pig iron ring, the armature just slides to the center point of all the pig iron bars.

2. The grouting pipe hopper docking device based on the electromagnet effect according to claim 1, characterized in that: The power supply is a DC power supply.

3. The grouting pipe hopper docking device based on the electromagnet effect according to claim 1, characterized in that: The iron cores are evenly distributed around the grouting pipe.

4. The grouting pipe hopper docking device based on the electromagnet effect according to claim 1, characterized in that: The iron core is made of silicon steel sheets.

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