A concrete mixer blade fixing structure
By using bolt tightening and lateral compression, the problem of uneven mixing caused by blade wear was solved, ensuring stable installation and working effect of the mixing blades.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINAN ZHONGWEI CONSTRUCTION LABOR SERVICE CO LTD
- Filing Date
- 2025-06-02
- Publication Date
- 2026-06-12
AI Technical Summary
During long-term concrete mixing, the wear-resistant layer on the blade surface wears down, causing the blade to become thinner and smaller, resulting in uneven concrete mixing.
By using bolt fastening and lateral compression, the mixing blades are detachably installed on the mixing shaft through a combination of steel plates and long bolts. The cooperation of push plates and threaded sleeves ensures that the blades are firmly installed.
This ensures stable installation of the mixing blades, preventing shaking and guaranteeing the uniformity and effectiveness of concrete mixing.
Smart Images
Figure CN224348058U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of concrete mixers, and in particular relates to a blade fixing structure for a concrete mixer. Background Technology
[0002] During the long-term mixing of materials such as concrete, the blades constantly generate intense friction with coarse and fine aggregates such as sand, gravel, and cement. As the usage time increases, the wear-resistant layer on the surface of the blades will gradually be worn away, causing the blades to become thinner and smaller, resulting in uneven mixing of concrete. Therefore, we designed a blade fixing structure for concrete mixers, which uses bolt fastening and lateral compression to ensure that the blades are detachably installed on the mixing shaft and are firmly installed to ensure working effect. Utility Model Content
[0003] The purpose of this utility model is to provide a concrete mixer blade fixing structure, which has the advantages of using bolt fastening and lateral compression to ensure that the blades can be detachably installed on the mixing shaft and are firmly installed, thus ensuring working effect, in order to solve the above-mentioned technical problems.
[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A concrete mixer blade fixing structure includes multiple mixing blades installed on the surface of a mixing shaft. A connecting rod is provided on the mixing blade. A steel plate one and a steel plate two are welded to the surface of the connecting rod. A square segment is provided on the surface of the mixing shaft. The steel plate one and the steel plate two are both attached to the surface of the square segment of the mixing shaft. Two long bolts are provided through the steel plate one and the steel plate two. The steel plate one and the steel plate two are installed on the surface of the square segment of the mixing shaft by the two long bolts. A movable push plate is provided between the steel plate one and the steel plate two. The side of the push plate abuts against the surface of the square segment of the mixing shaft.
[0005] Preferably, a threaded sleeve is fixedly connected to the bottom of the surface of the connecting rod, and a push screw is threadedly connected to the inner cavity of the threaded sleeve. One end of the push screw passes through to one side of the connecting rod and is rotatably connected to the push plate.
[0006] Preferably, a connecting steel plate is welded to one side of the stirring blade, and the connecting steel plate is welded to the surface of the connecting rod.
[0007] Preferably, the stirring shaft is rotatably mounted on the housing of the mixer, the square section of the stirring shaft is located in the inner cavity of the mixer housing, and multiple stirring blades are evenly distributed on the surface of the square section of the stirring shaft.
[0008] Preferably, both steel plate one and steel plate two have holes for long bolts to pass through.
[0009] The beneficial effects of this utility model are:
[0010] 1. This utility model involves placing steel plate one and steel plate two on the surface of the square section of the stirring shaft, then passing two long bolts through the holes in steel plate one and steel plate two, and then operating the push screw to rotate. Due to the threaded sleeve, the push plate is pushed to move and press against the surface of the square section of the stirring shaft, thereby causing the long bolts to also press against the surface of the square section of the stirring shaft. By tightening the long bolts, steel plate one and steel plate two undergo slight deformation and adhere to the surface of the square section of the stirring shaft. This achieves the purpose of ensuring that the blades are detachably installed on the stirring shaft and are firmly installed by means of bolt fastening and lateral compression, thus ensuring the working effect of the blades.
[0011] 2. This utility model utilizes the combined use of a push plate, a threaded sleeve, and a push screw. By rotating the push screw, the screw rotates and moves due to the threads inside the threaded sleeve, thereby pushing the push plate to move. After the push plate abuts against the surface of the square section of the stirring shaft, it will cause steel plate one and steel plate two to move, so that the long bolt is attached to the surface of the stirring shaft. This ensures that steel plate one and steel plate two will not shake after being installed on the surface of the stirring shaft, thus ensuring the stability of the stirring blades. Attached Figure Description
[0012] The advantages of the present invention, as described above and / or in the following detailed description in conjunction with the accompanying drawings, will become clearer and more readily understood. These drawings are merely illustrative and do not limit the scope of the present invention.
[0013] Figure 1 This is a perspective view of one embodiment of the present utility model;
[0014] Figure 2 This is a three-dimensional schematic diagram of the stirring shaft and stirring blades according to an embodiment of the present invention;
[0015] Figure 3 This is a three-dimensional disassembled schematic diagram of the stirring shaft and stirring blades according to an embodiment of the present invention;
[0016] Figure 4 This is a three-dimensional schematic diagram of the stirring blade and connecting rod according to one embodiment of the present invention.
[0017] The attached diagram lists the components represented by each number as follows:
[0018] 1. Stirring shaft, 2. Stirring blades, 3. Connecting rod, 4. Steel plate one, 5. Steel plate two, 6. Long bolt, 7. Push plate, 8. Threaded sleeve, 9. Push screw, 10. Connecting steel plate. Detailed Implementation
[0019] In the following description, embodiments of the concrete mixer blade fixing structure of the present invention will be described with reference to the accompanying drawings.
[0020] Figure 1-4This invention illustrates a concrete mixer blade fixing structure according to an embodiment of the present invention. It includes multiple mixing blades 2 mounted on the surface of a mixing shaft 1. The mixing shaft 1 is rotatably mounted on the mixer housing. A square section of the mixing shaft 1 is located within the inner cavity of the mixer housing. The multiple mixing blades 2 are evenly distributed on the surface of the square section of the mixing shaft 1. A connecting rod 3 is provided on each mixing blade 2. A connecting steel plate 10 is welded to one side of each mixing blade 2. The connecting steel plate 10 is welded to the surface of the connecting rod 3. A steel plate 4 and a steel plate 5 are welded to the surface of the connecting rod 3. The square section is provided on the surface of the mixing shaft 1. The steel plate 4 and the steel plate 5 are both attached to the surface of the square section of the mixing shaft 1. Two long bolts 6 are inserted through each of the steel plates 4 and 5. Holes are provided on both the steel plates 4 and 5 for the long bolts 6 to pass through. The steel plates 4 and 5 are connected by the two long bolts 6. A movable push plate 7 is installed on the surface of the square section of the stirring shaft 1. A first steel plate 4 and a second steel plate 5 are provided between them. The side of the push plate 7 abuts against the surface of the square section of the stirring shaft 1. A threaded sleeve 8 is fixedly connected to the bottom of the surface of the connecting rod 3. A push screw 9 is threadedly connected to the inner cavity of the threaded sleeve 8. One end of the push screw 9 passes through to one side of the connecting rod 3 and is rotatably connected to the push plate 7. Through the cooperation of the push plate 7, the threaded sleeve 8 and the push screw 9, the push screw 9 is rotated. The push screw 9 will rotate and move due to the thread inside the threaded sleeve 8, thereby pushing the push plate 7 to move. After the push plate 7 abuts against the surface of the square section of the stirring shaft 1, it will drive the first steel plate 4 and the second steel plate 5 to move, so that the long bolt 6 fits against the surface of the stirring shaft 1. This ensures that the first steel plate 4 and the second steel plate 5 will not shake after being installed on the surface of the stirring shaft 1, thereby ensuring the stability of the stirring blade 2.
[0021] Working principle: When using this utility model, during disassembly, simply remove the long bolt 6 from steel plate 4 and steel plate 5, then move steel plate 4 and steel plate 5 laterally to remove the stirring blade 2 from the surface of the stirring shaft 1 for maintenance. During installation, after placing steel plate 4 and steel plate 5 on the surface of the stirring shaft 1, pass the long bolt 6 through steel plate 4 and steel plate 5 for initial positioning. Then, operate the push screw 9 to rotate. Due to the threaded sleeve 8, the push screw 9 pushes the push plate 7 to move, causing the push plate 7 to abut against the surface of the stirring shaft 1, thereby driving steel plate 4 and steel plate 5 to move, so that the long bolt 6 also abuts against the surface of the stirring shaft 1. Then, tighten the long bolt 6, causing steel plate 4 and steel plate 2 to deform slightly and abut against the surface of the stirring shaft 1, ensuring a firm installation and preventing shaking during operation.
[0022] In summary, the concrete mixer blade fixing structure achieves this by fitting steel plates 4 and 5 onto the surface of the square section of the mixing shaft 1, then passing two long bolts 6 through the holes in steel plates 4 and 5, and finally rotating the push screw 9. The threaded sleeve 8 then pushes the push plate 7 to move, causing the push plate 7 to press against the surface of the square section of the mixing shaft 1. This, in turn, causes the long bolts 6 to press against the surface of the square section of the mixing shaft 1, thus tightening the long bolts 6. The steel plates 4 and 5 undergo slight deformation and adhere to the surface of the square section of the mixing shaft 1. This method of bolt tightening and lateral compression ensures the blades are detachably and securely installed on the mixing shaft, guaranteeing the blades' working performance.
Claims
1. A blade fixing structure for a concrete mixer, characterized in that, The device includes multiple stirring blades (2) mounted on the surface of a stirring shaft (1). A connecting rod (3) is provided on the stirring blade (2). A steel plate (4) and a steel plate (5) are welded to the surface of the connecting rod (3). A square section is provided on the surface of the stirring shaft (1). The steel plate (4) and the steel plate (5) are both attached to the surface of the square section of the stirring shaft (1). Two long bolts (6) are provided through the steel plate (4) and the steel plate (5). The steel plate (4) and the steel plate (5) are mounted on the surface of the square section of the stirring shaft (1) by the two long bolts (6). A movable push plate (7) is provided between the steel plate (4) and the steel plate (5). The side of the push plate (7) abuts against the surface of the square section of the stirring shaft (1).
2. The concrete mixer blade fixing structure according to claim 1, characterized in that, A threaded sleeve (8) is fixedly connected to the bottom of the surface of the connecting rod (3). A push screw (9) is threadedly connected to the inner cavity of the threaded sleeve (8). One end of the push screw (9) passes through to one side of the connecting rod (3) and is rotatably connected to the push plate (7).
3. The concrete mixer blade fixing structure according to claim 2, characterized in that, A connecting steel plate (10) is welded to one side of the stirring blade (2), and the connecting steel plate (10) is welded to the surface of the connecting rod (3).
4. The concrete mixer blade fixing structure according to claim 3, characterized in that, The stirring shaft (1) is rotatably mounted on the housing of the mixer. The square section of the stirring shaft (1) is located in the inner cavity of the mixer housing, and multiple stirring blades (2) are evenly distributed on the surface of the square section of the stirring shaft (1).
5. The concrete mixer blade fixing structure according to claim 4, characterized in that, Both steel plate one (4) and steel plate two (5) have holes for long bolts (6) to pass through.