Self-compacting concrete mixing hopper

Abstract

The utility model relates to the technical field of concrete mixing equipment, and discloses a self-compacting concrete mixing hopper which comprises a mixing hopper body, a motor is arranged at the top of the mixing hopper body through a fixing frame, a rotating shaft is arranged at one end of the motor, and a second sliding sleeve is slidably arranged on the outer surface of the end, away from the motor, of the rotating shaft. The outer surface of the middle of the second sliding sleeve is connected with the first sliding sleeve through a fixing frame, a second scraping plate is arranged on the outer surface of one side of the middle of the second sliding sleeve through a fixing frame, and the horizontal inclination angle of the second scraping plate is matched with the inclination angle of the bottom of the inner wall of the stirring hopper. According to the self-compacting concrete mixing hopper, the bottom of the inner wall of the mixing hopper is scraped through a second scraper, concrete at the bottom of the inner wall of the mixing hopper is scraped, the fluidity of the concrete at the bottom of the inner wall of the mixing hopper is improved, the concrete at the bottom of the inner wall of the hopper can be scraped, and it is avoided that the concrete is left at the bottom of the inner wall of the hopper; and the concrete can be stably discharged from the hopper.

Description

Technical Field

[0001] This application relates to the technical field of concrete mixing equipment, specifically a self-compacting concrete mixing hopper. Background Technology

[0002] Self-compacting concrete refers to concrete that can flow and compact under its own weight, completely filling the formwork even in the presence of dense reinforcing steel, while achieving excellent homogeneity, and requiring no additional vibration. Self-compacting concrete has good plastic viscosity.

[0003] An existing patent (publication number: CN218803119U) discloses a self-compacting concrete mixing hopper, including a mixing hopper with multiple legs fixed at the bottom, a discharge pipe installed at the bottom of the mixing hopper, a valve installed on the discharge pipe, and a geared motor fixedly installed at the top of the mixing hopper via a bracket. The output shaft of the geared motor is fixedly connected to a rotating shaft, and multiple sets of mixing rods are fixedly installed on the outer wall of the rotating shaft. One end of each set of mixing rods is fixedly installed with a slot, and a limit plate is fixedly installed at the bottom of the slot. In this invention, the end of the scraper will be pushed by a spring to press against the inner wall of the mixing hopper, so as to effectively scrape off the self-compacting concrete adhering to the inner wall of the mixing hopper under the drive of the geared motor. Moreover, the end of the scraper that is worn will remain in contact with the inner wall of the mixing hopper under the action of the spring, thereby extending the service life of the scraper and ensuring the scraping effect of the scraper on the self-compacting concrete.

[0004] When the above-mentioned mixing hopper is in use, the inclined design of the bottom of the inner wall of the hopper makes it impossible for the concrete at the bottom of the hopper to be discharged stably, which affects the efficiency of concrete discharge from the bottom of the hopper. In addition, because the expansion joint of the scraper adjustment component is set inside the hopper, concrete can easily enter the scraper adjustment component, affecting the adjustment of the scraper. Utility Model Content

[0005] To address the shortcomings of existing technologies, this application provides a self-compacting concrete mixing hopper that can scrape the concrete at the bottom of the hopper's inner wall, preventing concrete residue from remaining at the bottom of the hopper's inner wall and ensuring stable discharge of concrete from the hopper. It also prevents concrete from entering the scraper adjustment assembly and affecting scraper adjustment. This solves the problems caused by the inclined design of the hopper's inner wall, which prevents stable discharge of concrete from the bottom of the hopper, thus affecting discharge efficiency. Furthermore, it addresses the issue that the expansion joint of the scraper adjustment assembly, located inside the hopper, allows concrete to easily enter the assembly and affect scraper adjustment.

[0006] To achieve the aforementioned goal of scraping the concrete at the bottom of the hopper's inner wall, preventing concrete residue from remaining at the bottom of the hopper's inner wall, ensuring stable discharge of concrete from the hopper, and preventing concrete from entering the scraper adjustment assembly and affecting the scraper's adjustment purpose, this application provides the following technical solution: A self-compacting concrete mixing hopper, comprising a mixing hopper, a motor mounted on the top of the mixing hopper via a fixing frame, a rotating shaft mounted on one end of the motor, a second sliding sleeve slidably mounted on the outer surface of the end of the rotating shaft away from the motor, the middle outer surface of the second sliding sleeve connected to a first sliding sleeve via a fixing frame, a second scraper mounted on one side outer surface of the middle of the second sliding sleeve via a fixing frame, the horizontal inclination angle of the second scraper being adapted to the bottom inclination angle of the mixing hopper's inner wall, and a valve mounted at the bottom of the mixing hopper.

[0007] A stirring rod is provided on the outer surface of the middle part of the rotating shaft. A connecting box is provided at one end of the stirring rod. A telescopic outer tube is provided on one side of the inner wall of the connecting box. A telescopic inner rod is inserted into the inner wall of one end of the telescopic outer tube. One end of the telescopic inner rod is provided on one side of the connecting frame. A fixing plate is provided at the bottom of one end of the connecting frame. A first scraper is installed on one side of the fixing plate by bolts. The outer surface of one side of the first scraper is slidably connected to the inner wall of the middle part of the stirring hopper. A spring is provided at one end of the inner wall of the telescopic outer tube. One end of the spring is provided at one end of the telescopic inner rod.

[0008] The above scheme uses a second scraper to scrape the bottom of the inner wall of the mixing hopper, thereby increasing the fluidity of the concrete at the bottom of the inner wall of the mixing hopper. This achieves the effect of scraping the concrete at the bottom of the inner wall of the hopper, preventing concrete from remaining at the bottom of the inner wall of the hopper, and allowing the concrete to be discharged stably from the hopper.

[0009] Furthermore, a sliding rod is slidably provided on the inner wall of the middle part of the connecting frame, with one end of the sliding rod located on one end of the inner wall of the pull claw.

[0010] The above solution allows the sliding of the outer surface of the middle section of the slide bar within the inner wall of the middle section of the connecting frame to limit the angle of the pull claw's movement, thereby improving the stability of the pull claw's movement.

[0011] Furthermore, a first threaded rod is rotatably mounted on one side of the connecting box via a fixing frame. The outer surface of the middle part of the first threaded rod is threaded to the inner wall of one end of the pull claw, and the two ends of the pull claw are located on both sides of the connecting frame.

[0012] With the above solution, rotating the first threaded rod can drive the pull claw to move, which in turn can push the connecting frame to move. Then, the position of the first scraper can be adjusted by the connecting frame and the fixing plate, so as to avoid the first scraper from being in too close contact with the inner wall of the mixing bucket, which would make it difficult to remove the first scraper. At the same time, it can be convenient to install the first scraper.

[0013] Furthermore, the opening of the connecting box is upward-facing, and the inner wall of the connecting box is slidably connected to the outer surface of the middle part of the connecting frame.

[0014] The above solution, by setting the opening of the connecting box upwards, can prevent concrete from entering the connecting box and affecting the movement of the connecting frame, which in turn affects the movement of the first scraper driven by the connecting frame.

[0015] Furthermore, the number of the second scrapers is such that two second scrapers are distributed in a circular array.

[0016] The above scheme improves the efficiency of scraping concrete adhering to the bottom of the inner wall of the mixing hopper by setting two second scrapers.

[0017] Furthermore, the end of the second scraper closest to the rotating shaft is on the same reference plane as the axis of the rotating shaft, while the end of the second scraper furthest from the rotating shaft is off the reference plane from the axis of the rotating shaft.

[0018] The above scheme allows the second scraper to be angled so that when it rotates clockwise with the shaft, it can push the concrete at the bottom edge of the mixing hopper towards the center discharge port at the bottom of the mixing hopper, facilitating concrete discharge. When the second scraper rotates counterclockwise with the shaft, it can push the concrete at the center of the bottom of the mixing hopper towards the edge of the bottom of the mixing hopper, preventing concrete from settling at the center of the bottom of the mixing hopper and hindering effective mixing.

[0019] Furthermore, the inner wall of the middle part of the first sliding sleeve is slidably disposed on the outer surface of one end of the rotating shaft, and a push plate is disposed on one side of the outer surface of the middle part of the first sliding sleeve. A second threaded rod is threadedly connected to the inner wall of the middle part of the push plate, and the outer surface of one end of the second threaded rod is rotatably disposed on the outer surface of one side of the middle part of the rotating shaft through a support plate.

[0020] With the above scheme, rotating the second threaded rod can drive the push plate to move, causing the push plate to push the inner wall of the middle part of the first sliding sleeve to slide on the outer surface of one end of the rotating shaft, thereby pushing the second sliding sleeve to move. The movement of the second sliding sleeve can adjust the distance between the second scraper and the bottom of the inner wall of the mixing hopper, so that the second scraper can contact the bottom of the inner wall of the mixing hopper under appropriate conditions.

[0021] Furthermore, a limiting plate is provided on one side of the outer surface of the middle portion of the first sliding sleeve, and the inner wall of the middle portion of the limiting plate is slidably disposed on the outer surface of the middle portion of the limiting rod. One end of the limiting rod is disposed on one side of the outer surface of the middle portion of the rotating shaft through a support plate.

[0022] The above scheme improves the stability of the first sliding sleeve during movement by allowing the inner wall of the limiting plate to slide on the outer surface of the limiting rod.

[0023] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0024] This self-compacting concrete mixing hopper uses a second scraper to scrape the bottom of the inner wall of the hopper, increasing the fluidity of the concrete at the bottom of the hopper. This achieves the effect of scraping the concrete at the bottom of the hopper inner wall, preventing concrete from remaining at the bottom of the hopper, and allowing the concrete to be discharged stably from the hopper. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of this application;

[0026] Figure 2 This is a top view of the structure of this application;

[0027] Figure 3 This is a schematic diagram of the front cross-sectional structure of this application;

[0028] Figure 4 This is a schematic cross-sectional view of the structure on the right side of this application;

[0029] Figure 5 This is a schematic diagram of the connection structure between the slide rod and the connecting frame in this application.

[0030] In the picture:

[0031] 1. Mixing hopper; 2. Motor; 3. Rotating shaft; 4. Mixing rod; 5. Connecting box; 6. Telescopic outer tube; 7. Telescopic inner rod; 8. Connecting frame; 9. Fixing plate; 10. First scraper; 11. First threaded rod; 12. Pull claw; 13. Sliding rod; 14. Second threaded rod; 15. Push plate; 16. First sliding sleeve; 17. Second sliding sleeve; 18. Second scraper; 19. Limiting plate; 20. Limiting rod; 21. Spring. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0033] Please see Figure 2 , Figure 3 and Figure 4This embodiment of a self-compacting concrete mixing hopper includes a mixing hopper 1. A motor 2 is mounted on the top of the mixing hopper 1 via a fixing frame. A rotating shaft 3 is mounted on one end of the motor 2. A second sliding sleeve 17 is slidably mounted on the outer surface of the end of the rotating shaft 3 away from the motor 2. The outer surface of the middle part of the second sliding sleeve 17 is connected to a first sliding sleeve 16 via a fixing frame. A second scraper 18 is mounted on the outer surface of one side of the middle part of the second sliding sleeve 17 via a fixing frame. The horizontal inclination angle of the second scraper 18 is adapted to the bottom inclination angle of the inner wall of the mixing hopper 1. A valve is mounted on the bottom of the mixing hopper 1.

[0034] Please see Figure 1 , Figure 2 and Figure 3 A stirring rod 4 is provided on the outer surface of the middle part of the rotating shaft 3. A connecting box 5 is provided at one end of the stirring rod 4. A telescopic outer tube 6 is provided on one side of the inner wall of the connecting box 5. A telescopic inner rod 7 is inserted into the inner wall of one end of the telescopic outer tube 6. One end of the telescopic inner rod 7 is provided on one side of the connecting frame 8. A fixing plate 9 is provided at the bottom of one end of the connecting frame 8. A first scraper 10 is installed on one side of the fixing plate 9 by bolts. The outer surface of one side of the first scraper 10 is slidably connected to the inner wall of the middle part of the stirring bucket 1. A spring 21 is provided at one end of the inner wall of the telescopic outer tube 6. One end of the spring 21 is provided at one end of the telescopic inner rod 7.

[0035] Please see Figure 2 , Figure 3 and Figure 5 A sliding rod 13 is slidably provided on the inner wall of the middle part of the connecting frame 8. One end of the sliding rod 13 is located on one end of the inner wall of the pull claw 12. By sliding the outer surface of the middle part of the sliding rod 13 within the inner wall of the middle part of the connecting frame 8, the angle of the pull claw 12 during movement can be limited, thereby improving the stability of the pull claw 12 during movement.

[0036] Please see Figure 2 , Figure 3 and Figure 5 A first threaded rod 11 is rotatably mounted on one side of the connecting box 5 via a fixing frame. The outer surface of the middle part of the first threaded rod 11 is threaded to the inner wall of one end of the pull claw 12. The two ends of the pull claw 12 are located on both sides of the connecting frame 8. By rotating the first threaded rod 11, the pull claw 12 can be moved, which in turn can push the connecting frame 8 to move. Then, the position of the first scraper 10 can be adjusted by the connecting frame 8 in conjunction with the fixing plate 9. This avoids the first scraper 10 from contacting the inner wall of the mixing bucket 1 too tightly, which would make it difficult to remove the first scraper 10. At the same time, it can facilitate the installation of the first scraper 10.

[0037] Please see Figure 2 , Figure 3 and Figure 5The opening of the connecting box 5 is set to face upwards. The inner wall of the connecting box 5 is slidably connected to the outer surface of the middle part of the connecting frame 8. By setting the opening of the connecting box 5 to face upwards, concrete can be prevented from entering the interior of the connecting box 5 and affecting the movement of the connecting frame 8, thereby affecting the movement of the first scraper 10 driven by the connecting frame 8.

[0038] Please see Figure 2 and Figure 4 The number of second scrapers 18 is such that two second scrapers 18 are arranged in a ring array. The arrangement of two second scrapers 18 can improve the efficiency of scraping the concrete attached to the bottom of the inner wall of the mixing bucket 1.

[0039] Please see Figure 2 The end of the second scraper 18 closest to the rotating shaft 3 is on the same reference plane as the axis of the rotating shaft 3, and the end of the second scraper 18 furthest from the rotating shaft 3 is off the reference plane of the axis of the rotating shaft 3. By setting the angle of the second scraper 18, when the second scraper 18 rotates clockwise with the rotating shaft 3, it can push the concrete at the bottom edge of the inner wall of the mixing hopper 1 towards the center discharge port at the bottom of the inner wall of the mixing hopper 1, so as to facilitate the discharge of concrete. When the second scraper 18 rotates counterclockwise with the rotating shaft 3, it can push the concrete at the center of the bottom of the inner wall of the mixing hopper 1 towards the edge of the bottom of the inner wall of the mixing hopper 1, so as to avoid the concrete from settling at the center of the bottom of the inner wall of the mixing hopper 1 and failing to mix effectively.

[0040] Please see Figure 3 The inner wall of the first sliding sleeve 16 is slidably disposed on the outer surface of one end of the rotating shaft 3. A push plate 15 is disposed on one side of the outer surface of the first sliding sleeve 16. A second threaded rod 14 is threadedly connected to the inner wall of the push plate 15. The outer surface of one end of the second threaded rod 14 is rotatably disposed on the outer surface of one side of the rotating shaft 3 via a support plate. By rotating the second threaded rod 14, the push plate 15 can be moved, causing the push plate 15 to push the inner wall of the first sliding sleeve 16 to slide on the outer surface of one end of the rotating shaft 3, thereby pushing the second sliding sleeve 17 to move. The movement of the second sliding sleeve 17 can adjust the distance between the second scraper 18 and the bottom of the inner wall of the mixing bucket 1, thereby allowing the second scraper 18 to contact the bottom of the inner wall of the mixing bucket 1 under appropriate conditions.

[0041] Please see Figure 3 A limiting plate 19 is provided on one side of the outer surface of the middle part of the first sliding sleeve 16. The inner wall of the middle part of the limiting plate 19 is slidably disposed on the outer surface of the middle part of the limiting rod 20. One end of the limiting rod 20 is disposed on one side of the outer surface of the middle part of the rotating shaft 3 through a support plate. The stability of the first sliding sleeve 16 when moving can be improved by sliding the inner wall of the middle part of the limiting plate 19 on the outer surface of the middle part of the limiting rod 20.

[0042] In this embodiment, a self-compacting concrete mixing hopper uses a second scraper 18 to scrape the bottom of the inner wall of the mixing hopper 1, thereby increasing the fluidity of the concrete at the bottom of the inner wall of the mixing hopper 1. This achieves the effect of scraping the concrete at the bottom of the inner wall of the hopper, preventing concrete from remaining at the bottom of the inner wall of the hopper, and allowing the concrete to be discharged stably from the hopper.

[0043] The working principle of the above embodiment is as follows: The concrete to be mixed is placed into the mixing hopper 1. The motor 2 operates, driving the rotating shaft 3 to rotate counterclockwise. The mixing rod 4 begins to mix the concrete in the mixing hopper 1. Simultaneously, the first scraper 10 scrapes the side of the inner wall of the mixing hopper 1. When the first scraper 10 wears down, the spring 21 releases its thrust, applying a thrust to the telescopic inner rod 7. The telescopic inner rod 7 pushes the connecting frame 8, which in turn applies a thrust to the first scraper 10 through the fixing plate 9, ensuring that the first scraper 10 remains in contact with the side of the inner wall of the mixing hopper 1 even after wear. When it is necessary to scrape the concrete adhering to the bottom of the inner wall of the mixing hopper 1, the second threaded rod 14 is rotated, causing the push plate 15 to push the first sliding sleeve 16 downwards. This causes the second sliding sleeve 17 to drive the second scraper 18 downwards, bringing the bottom of the second scraper 18 into contact with the bottom of the inner wall of the mixing hopper 1. As the rotating shaft 3 rotates counterclockwise, the second scraper 18 pushes the concrete at the center of the bottom of the inner wall of the mixing hopper 1 towards the bottom of the inner wall. The first scraper 10 moves to the edge of the mixing hopper 1, scraping the concrete deposited at the center of the bottom of the mixing hopper 1 to other positions for mixing. When the concrete is mixed and needs to be discharged, the valve at the bottom of the mixing hopper 1 is opened, and the concrete in the mixing hopper 1 begins to be discharged through the discharge port at the center of the bottom of the mixing hopper 1. The motor 2 starts to rotate clockwise, causing the rotating shaft 3 to drive the second scraper 18 to rotate clockwise. The angle of the second scraper 18 is set so that when the second scraper 18 rotates clockwise with the rotating shaft 3, it can push the concrete at the bottom edge of the mixing hopper 1 towards the center discharge port at the bottom of the mixing hopper 1, facilitating the discharge of the concrete. When the first scraper 10 needs to be replaced, the first threaded rod 11 is rotated, causing the pull claw 12 to push the connecting frame 8 to move. The connecting frame 8 pushes the telescopic inner rod 7 into the telescopic outer tube 6, compressing the spring 21. At the same time, the connecting frame 8 drives the first scraper 10 to disengage from the side of the inner wall of the mixing hopper 1. The first scraper 10 can be removed and replaced by removing the bolts on the fixing plate 9.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0045] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A self-compacting concrete mixing hopper, comprising a mixing hopper (1), characterized in that: A motor (2) is mounted on the top of the mixing hopper (1) via a fixed frame. A rotating shaft (3) is mounted on one end of the motor (2). A second sliding sleeve (17) is slidably mounted on the outer surface of the end of the rotating shaft (3) away from the motor (2). The outer surface of the middle part of the second sliding sleeve (17) is connected to the first sliding sleeve (16) via a fixed frame. A second scraper (18) is mounted on the outer surface of one side of the middle part of the second sliding sleeve (17) via a fixed frame. The horizontal inclination angle of the second scraper (18) is adapted to the bottom inclination angle of the inner wall of the mixing hopper (1). A valve is mounted on the bottom of the mixing hopper (1). A stirring rod (4) is provided on the outer surface of the middle part of the rotating shaft (3). A connecting box (5) is provided at one end of the stirring rod (4). A telescopic outer tube (6) is provided on one side of the inner wall of the connecting box (5). A telescopic inner rod (7) is inserted into the inner wall of one end of the telescopic outer tube (6). One end of the telescopic inner rod (7) is provided on one side of the connecting frame (8). A fixing plate (9) is provided at the bottom of one end of the connecting frame (8). A first scraper (10) is installed on one side of the fixing plate (9) by bolts. The outer surface of one side of the first scraper (10) is slidably connected to the inner wall of the middle part of the stirring bucket (1). A spring (21) is provided at one end of the inner wall of the telescopic outer tube (6). One end of the spring (21) is provided at one end of the telescopic inner rod (7).

2. The self-compacting concrete mixing hopper according to claim 1, characterized in that: A slide rod (13) is slidably provided on the inner wall of the middle part of the connecting frame (8), and one end of the slide rod (13) is provided on one end of the inner wall of the pull claw (12).

3. The self-compacting concrete mixing hopper according to claim 1, characterized in that: The first threaded rod (11) is rotatably mounted on one side of the connecting box (5) via a fixed frame. The outer surface of the middle part of the first threaded rod (11) is threaded to the inner wall of one end of the pull claw (12). The two ends of the pull claw (12) are located on both sides of the connecting frame (8).

4. The self-compacting concrete mixing hopper according to claim 1, characterized in that: The opening of the connecting box (5) is set to face upward, and the inner wall of the connecting box (5) is slidably connected to the outer surface of the middle part of the connecting frame (8).

5. The self-compacting concrete mixing hopper according to claim 1, characterized in that: The number of the second scraper (18) is such that two second scrapers (18) are distributed in a ring array.

6. The self-compacting concrete mixing hopper according to claim 1, characterized in that: The end of the second scraper (18) near the rotating shaft (3) is on the same reference plane as the axis of the rotating shaft (3), and the end of the second scraper (18) away from the rotating shaft (3) is off the reference plane of the axis of the rotating shaft (3).

7. A self-compacting concrete mixing hopper according to claim 6, characterized in that: The inner wall of the first sliding sleeve (16) is slidably disposed on the outer surface of one end of the rotating shaft (3). A push plate (15) is provided on one side of the outer surface of the first sliding sleeve (16). A second threaded rod (14) is threadedly connected to the inner wall of the push plate (15). The outer surface of one end of the second threaded rod (14) is rotatably disposed on the outer surface of one side of the middle of the rotating shaft (3) through a support plate.

8. A self-compacting concrete mixing hopper according to claim 7, characterized in that: A limiting plate (19) is provided on one side of the outer surface of the middle part of the first sliding sleeve (16). The inner wall of the middle part of the limiting plate (19) is slidably disposed on the outer surface of the middle part of the limiting rod (20). One end of the limiting rod (20) is disposed on one side of the outer surface of the middle part of the rotating shaft (3) through a support plate.

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