Mixing arm guard plate of helical ribbon type concrete mixer

Abstract

The utility model discloses a helical ribbon concrete mixer mixing arm guard plate which comprises a guard plate body, one face of the guard plate body is a working face, the other face of the guard plate body is a mounting face, a mounting platform is arranged on the mounting face, the guard plate body is connected with a mixing arm in a mixer through the mounting platform, and a mounting hole is formed in the mounting platform. The mounting surface is located at the concave part in the working surface, the mounting platforms and the mounting holes are as many as each other, the mounting holes are preset in the mounting platforms, and the mounting platforms are in mirror distribution about two ends of the central point of the mounting surface. According to the stirring arm guard plate of the helical ribbon concrete mixer, the mounting platform on the mounting surface of the guard plate body is connected with the stirring arm in the mixer, and the mounting platform adopts a circular design, so that the guard plate body is effectively in contact connection with the stirring arm, and the guard plate body is relatively convenient to mount and maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical equipment, in particular to a mixing arm guard plate of a spiral ribbon concrete mixer. Background Art

[0002] The Chinese patent application number is 201721339270.0, and the publication date is May 4, 2018. The patent discloses a shaft-type four-screw concrete mixing system, including a first mixing mechanism and a second mixing mechanism. The first mixing mechanism and the second mixing mechanism respectively include a first scraper, a first mixing arm, a first reverse spiral belt, a second reverse spiral belt, a second mixing arm, a first feed spiral belt, a second feed spiral belt, a third mixing arm, a fourth mixing arm and a mixing shaft. The first reverse spiral belt and the second reverse spiral belt are respectively provided with a first reverse scraper and a second reverse scraper; the first feed spiral belt and the second feed spiral belt are respectively provided with a first feed scraper and a second feed scraper. The shortcomings of this patent are: no protection measures for the mixing arms are taken, the life of the mixing arms is short, and the mixing system is difficult to maintain. Utility Model Content

[0003] The utility model aims to provide a mixing arm guard plate for a spiral ribbon concrete mixer, so as to solve the problems in the above background technology that the mixing arm has a short service life and the mixing system is difficult to maintain.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a guard plate for a mixing arm of a spiral ribbon concrete mixer, comprising a guard plate body, one side of the guard plate body being a working surface, and the other side being a mounting surface, a mounting platform being arranged on the mounting surface, the guard plate body being connected to the mixing arm in the mixer through the mounting platform, mounting holes being arranged on the mounting platform, the mounting surface being located in a recessed part inside the working surface, the number of mounting platforms being the same as the number of mounting holes, and the mounting holes being preset inside the mounting platform, and the mounting platforms being mirror-distributed at both ends of the center point of the mounting surface.

[0005] As a preferred technical solution of the present invention, the upper half of the mounting hole is a hexagonal countersunk hole, and the lower half is a circular through hole.

[0006] As a preferred technical solution of the present invention, the mounting holes are symmetrically distributed about the center point of the guard plate body.

[0007] As a preferred technical solution of the present invention, the scraper and the spiral belt have the same arc shape, and the scraper and the spiral belt are slidably matched.

[0008] Compared with the prior art, the beneficial effects of the mixing arm guard plate of the spiral ribbon concrete mixer of the utility model are:

[0009] (1) The guard plate body of the utility model is connected to the stirring arm in the mixer through the mounting platform on the mounting surface of the guard plate body. The mounting platform adopts a circular design, so that the guard plate body is effectively connected to the stirring arm in a contact manner, making the installation and maintenance of the guard plate body more convenient;

[0010] (2) The upper part of the mounting hole of the utility model is a waist-shaped countersunk hole, which has a large space and is convenient for fastening, making the installation with the stirring arm smoother; the lower part is a waist-shaped through hole, which plays a role of limiting. The setting of the mounting hole with a larger upper part and a smaller lower part makes the connection between the guard plate body and the stirring arm more secure and is not easy to become relatively loose during operation;

[0011] (3) The guard plate body of the utility model is made of wear-resistant high-chromium cast iron, which is a relatively cost-effective material in the concrete mixing system. It is of great significance to increase the service life of the mixing arm and enhance the convenience and maintainability of the screw-type concrete mixer. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0013] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0014] Figure 3 This is a schematic diagram of the main structure of the first embodiment of the present utility model.

[0015] In the figure: 1. guard plate body; 101. working surface; 102. mounting surface; 103. mounting platform; 104. mounting hole; 2. stirring arm; 3. scraper; 4. screw belt. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Embodiment 1

[0017] See also Figure 1-3The utility model provides a technical solution: a spiral ribbon concrete mixer mixing arm guard plate, including a guard plate body 1, one side of the guard plate body is a working surface 101, and the other side is a mounting surface 102, a mounting platform 103 is arranged on the mounting surface 102, the guard plate body is connected to the mixing arm in the mixer through the mounting platform 103, a mounting hole 104 is arranged on the mounting platform 103, the mounting surface 102 is located in a recessed part inside the working surface 101, the number of the mounting platforms 103 is the same as the number of the mounting holes 104, and the mounting holes 104 are preset inside the mounting platform 103, and the mounting platforms 103 are mirror-distributed at both ends of the center point of the mounting surface 102.

[0018] The upper half of the mounting hole 104 is a hexagonal countersunk hole, and the lower half is a circular through hole.

[0019] The mounting holes 104 are symmetrically distributed about the center point of the guard plate body 1, and the material of the guard plate body is BTMCr20.

[0020] The scraper 3 and the spiral belt 4 have the same arc shape, and the scraper 3 and the spiral belt 4 are slidably matched.

[0021] A horizontal shaft type four-screw concrete mixer has two mixing shafts inside, each mixing shaft is provided with four screws, and both ends of each screw are respectively installed on a mixing arm. The mixing arm includes an arm seat and an arm rod; the arm seat is provided with an arm shaft mounting surface and an arm seat mounting hole, the mixing arm matches with the mixing shaft of the mixer through the arm shaft mounting surface, and is connected to another mixing arm equipped with another screw through the arm seat mounting hole; the upper end of the arm rod is provided with a screw mounting surface, which is connected to the screw through the screw mounting surface. According to the actual production situation, the wear degree distribution of each part of the mixing arm is as follows:

[0022] (1) The screw belt mounting surface is almost free of wear because it is shielded by the screw belt and scraper;

[0023] (2) The arm seat and the arm rod adjacent to the arm seat are far away from the concrete raw materials and therefore suffer less wear;

[0024] (3) The upper end of the arm, below the screw belt mounting surface, is subject to the most severe friction from the concrete raw material and suffers the most severe wear. The closer it is to the screw belt mounting surface, the more severe the wear.

[0025] Therefore, installing a stirring arm guard plate at the upper end of the arm below the screw belt mounting surface is an effective way to increase the service life of the stirring arm.

[0026] The working principle of the mixing arm guard plate of the screw-belt concrete mixer of the utility model is to utilize the guard plate body to connect with the mixing arm in the mixer through the mounting platform on the mounting surface, so as to protect the mixing arm from wear during operation. Specifically, the mounting platform adopts a circular design, so that the guard plate body is effectively contact-connected with the mixing arm, which improves the convenience of installation and maintenance. The upper half of the mounting hole is a hexagonal countersunk hole, and the lower half is a circular through hole. This design makes the connection between the guard plate body and the mixing arm tighter and less likely to become relatively loose during operation. In addition, the material of the guard plate body is made of wear-resistant high-chromium cast iron, which increases the service life of the mixing arm, thereby enhancing the ease of use and maintainability of the screw-belt concrete mixer;

[0027] Due to the use of the guard plate body made of wear-resistant high-chromium cast iron material, the service life of the mixing arm is effectively improved, the maintenance frequency caused by wear is reduced, and the maintenance cost is reduced. The mounting platform of the guard plate body adopts a circular design, which makes the connection between the guard plate body and the mixing arm tighter and not easy to become relatively loose during operation, thereby improving the stability and reliability of the mixing system. The upper part of the mounting hole is a hexagonal countersunk hole, and the lower part is a circular through hole, which makes the connection between the guard plate body and the mixing arm smoother and also plays a limiting role, further enhancing the stability of the connection. The use of the mixing arm guard plate not only improves the service life of the mixing arm, but also indirectly improves the overall mixing efficiency and mixing quality of the screw-belt concrete mixer, and enhances the economy and practicality of the mixer. On the whole, the design of the mixing arm guard plate of the screw-belt concrete mixer of the utility model effectively solves the problems of low mixing arm life and high difficulty in maintenance of the mixing system, which is of great significance to the use and maintenance of the screw-belt concrete mixer.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A belt type concrete mixer mixing arm guard plate, characterized in that: The invention comprises a guard plate body (1), one side of the guard plate body being a working surface (101), and the other side being a mounting surface (102), a mounting platform (103) being arranged on the mounting surface (102), the guard plate body being connected to a stirring arm in a stirring machine via the mounting platform (103), a mounting hole (104) being arranged on the mounting platform (103), the mounting surface (102) being located at a recessed portion inside the working surface (101), the number of the mounting platforms (103) being the same as the number of the mounting holes (104), the mounting holes (104) being preset inside the mounting platforms (103), and the mounting platforms (103) being distributed in a mirror image at both ends of the center point of the mounting surface (102).

2. The stirring arm guard plate of a ribbon concrete mixer according to claim 1, characterized in that: The upper part of the mounting hole (104) is a hexagonal countersunk hole, and the lower part is a circular through hole.

3. The stirring arm guard plate of a ribbon concrete mixer according to claim 1, characterized in that: The material of the guard plate body is BTMCr20.

4. The stirring arm guard plate of a ribbon concrete mixer according to claim 1, characterized in that: The installation hole (104) is symmetrically distributed about the center point of the guard plate body (1), and the scraper (3) and the screw belt (4) have the same arc shape. The scraper (3) and the screw belt (4) are slidably matched.

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