Concrete mixing structure

Abstract

The utility model belongs to the technical field of building construction, and particularly relates to a concrete mixing structure which comprises a mixing drum, a mixing shaft arranged in the mixing drum and a feed opening formed in the bottom of the mixing drum, and further comprises two baffles arranged on the two sides of the feed opening respectively, the two baffles can horizontally slide relative to the mixing drum to open and close the discharge port; the two driving arms are respectively connected with the two baffle plates, and each of the two driving arms comprises a transmission section which is parallel to each other; the gear is positioned between the two transmission sections; the two sections of racks are arranged on the side walls of the sides, close to each other, of the two transmission sections respectively, and the two sections of racks are both connected with the gear in a meshed mode; the power source is used for driving the gear to rotate; compared with the prior art, the concrete mixing structure disclosed by the utility model has the advantages that concrete can be conveniently discharged from the lower part of the mixing drum, meanwhile, the opening and closing structure of the discharging opening is more stable, the service life is longer, and the concrete mixing structure is suitable for staged discharging.

Description

Technical Field

[0001] The utility model belongs to the technical field of building construction, in particular to a concrete mixing structure. Background Art

[0002] Concrete is one of the most commonly used materials in construction. It is mainly made of cement as the main gel material, with water, sand, gravel and other materials added in a certain proportion and fully mixed.

[0003] The current concrete mixing process generally involves putting materials into a mixing device for mixing, installing a power device for the mixing element at one end of the mixing device, and setting a discharge port at the other end. When the concrete mixing is completed, the mixed concrete is poured out from the discharge port. However, when pouring out the mixed concrete, it is necessary to lift up the end of the mixing device away from the discharge port so that the entire mixing device is tilted so that the concrete can be poured out. However, this requires installing a high-power drive device under the mixing device to lift the mixing device to pour out the concrete, which is a relatively complex structure and has a high cost.

[0004] Based on this problem, a Chinese patent document with publication number: CN218453066U discloses a feeding structure for a single-horizontal-shaft concrete mixer, including a horizontal mixing drum, a horizontal mixing shaft installed in the horizontal mixing drum, a feeding port processed on the lower surface of the horizontal mixing drum, a plugging assembly for closing the feeding port installed below the horizontal mixing drum, and a driving assembly for controlling the rotation of the plugging assembly installed on one side of the horizontal mixing drum. In this technology, the plugging plate can rotate below the horizontal mixing drum, and the plugging plate can close the feeding port when it is tangent to the feeding port. The up and down movement of the piston rod can drive the plugging plate to rotate. When the piston rod moves downward, the plugging plate no longer closes the feeding port, so that concrete can be discharged from the feeding port. When the piston rod moves upward, the plugging plate closes the feeding port again, thereby facilitating the discharge of concrete from the bottom of the horizontal mixing drum.

[0005] However, after studying the above technology, it was found that in this technology, the discharge port is opened by driving the plugging plate to swing downward, and the discharge port is closed by driving the plugging plate to swing upward. However, sometimes the concrete is not discharged all at once after mixing is completed, but is discharged separately in multiple stages. In this way, the discharge port needs to be closed during the concrete discharge process, that is, the plugging plate is swung upward. During this process, the plugging plate needs to withstand the impact of the concrete discharge process. This impact is relatively large, so it is easy to damage the plugging plate, thereby affecting the service life of the plugging plate. Therefore, this technology is not economical to use when the concrete is discharged in stages, and there is still room for improvement. Utility Model Content

[0006] The purpose of the utility model is to provide a concrete mixing structure in view of the above-mentioned technical problems. This concrete mixing structure is convenient for discharging concrete from the bottom of the mixing drum. At the same time, the opening and closing structure of the discharge port is more stable and has a longer service life, and is suitable for the situation of discharging in stages.

[0007] In view of this, the utility model provides a concrete mixing structure, including a mixing drum, a mixing shaft is arranged in the mixing drum, a feeding port is arranged at the bottom of the mixing drum, and further includes:

[0008] Two baffles, which are respectively arranged on both sides of the discharge port, can slide horizontally relative to the mixing drum to open and close the discharge port;

[0009] Two driving arms, the two driving arms are respectively connected to the two baffles, and the two driving arms each include a transmission section parallel to each other;

[0010] Gear, the gear is located between the two transmission sections;

[0011] Two racks, the two racks are respectively arranged on the side walls of the two transmission sections close to each other, and the two racks are meshed and connected with the gears;

[0012] Power source, the power source is used to drive the gears to rotate.

[0013] In the present technical solution, when it is necessary to open the discharge port, the power source drives the gear to rotate forward, and the gear drives the two driving arms to move away from each other through two sections of racks, and the two driving arms respectively carry the two baffles to move in the direction of moving away from each other, thereby opening the discharge port; when it is necessary to close the discharge port or reduce the opening diameter of the discharge port, the power source drives the gear to rotate reversely, and the gear drives the two driving arms to move closer to each other through two sections of racks, and the two driving arms respectively carry the two baffles to move in the direction of moving closer to each other, thereby reducing the opening diameter of the discharge port or closing it.

[0014] In the above technical solution, further, the driving arm also includes a fixed section, a first end of the fixed section is connected to the baffle, and a second end of the fixed section is connected to the transmission section.

[0015] In the above technical solution, further, the first end of the fixed section has two branch connection points, and the two branch connection points are respectively connected to two sides of the baffle.

[0016] In the above technical solution, further, the first end of the fixed section is detachably connected to the baffle.

[0017] In the above technical solution, further, a retreat groove is provided on the first fixed section, and the transmission section connected to the second fixed section can pass through the retreat groove.

[0018] In the above technical solution, further, a material guide plate is provided on one side of the two baffles close to each other, and the lower end of the material guide plate extends downward.

[0019] In the above technical solution, further, a dustproof box is provided outside the power source and the gear.

[0020] The beneficial effects of the utility model are:

[0021] 1. The opening and closing structure of the discharge port is formed by the cooperation of two baffles, gears, two racks and two driving arms, which can control the opening and closing of the discharge port to start and stop the discharge of concrete, and the movement trajectory of the two baffles is perpendicular to the discharge direction of the concrete. In this way, when the baffle closes the discharge port, the baffle is only impacted by a small part of the concrete, and when the concrete contacts the baffle, it will disperse to the side of the baffle to reduce the impact. In this way, the opening and closing structure of the discharge port is more stable and has a longer service life.

[0022] 2. By setting two branch connection points at the first end of the fixed section on each driving arm to connect with the two sides of the baffle, the supporting force of the driving arm on the baffle is more dispersed, so that the bearing capacity of each point on the baffle is more even, thereby making the opening and closing structure of the discharge port more stable.

[0023] 3. By designing the fixed section to be detachably connected to the baffle, it is convenient to inspect or replace the baffle and the driving arm separately, which has better interchangeability and lower use cost.

[0024] 4. By arranging a guide plate on the side where the two baffles are close to each other, the concrete discharge process can be guided to prevent the concrete from adhering to the opening and closing structure of the discharge port.

[0025] 5. By setting a dustproof box outside the power source and the gear, the power source and the gear are protected, and the service life of the opening and closing structure of the feed port is extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model in the first direction.

[0028] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model in the second direction.

[0029] Figure 3 It is a schematic diagram of the structure of the utility model when viewed from above.

[0030] Figure 4 It is a schematic diagram of the structure of the mixing drum in the utility model.

[0031] Figure 5 It is a schematic diagram of the structure of various components in the utility model when the feed port is opened.

[0032] The symbols in the figure are:

[0033] 1. Mixing drum; 2. Mixing shaft; 3. Feeding port; 4. Baffle; 5. Driving arm; 501. Fixed section; 502. Transmission section; 6. Gear; 7. Power source; 8. Rack; 9. Recess; 10. Dustproof box; DETAILED DESCRIPTION

[0034] 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 of 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.

[0035] In the description of the utility model, it should be noted that the terms used here are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0036] Example 1

[0037] like Figure 1-Figure 5 As shown, this embodiment provides a concrete mixing structure, including a mixing drum 1, a mixing shaft 2 is provided in the mixing drum 1, a feeding port 3 is provided at the bottom of the mixing drum 1, and further includes: two baffles 4, two driving arms 5, a gear 6, two racks 8, a power source 7,

[0038] See also Figure 1 and Figure 4The mixing drum 1 has a mixing chamber for accommodating concrete, the mixing shaft 2 is located in the mixing chamber to mix the concrete in the mixing drum 1, a feed opening 3 is opened at the bottom of the mixing drum 1, the feed opening 3 is connected to the mixing chamber, two baffles 4, a gear 6, two racks 8, and two driving arms 5 cooperate to form an opening and closing structure of the feed opening 3, the feed opening 3 is closed during the concrete mixing process, and after the feed opening 3 is opened, the concrete in the mixing chamber can pass through the feed opening 3 and fall to the bottom of the mixing drum 1; in this embodiment, the mixing drum 1 and the mixing shaft 2 can adopt the structure in the prior art;

[0039] See also Figure 2 , two baffles 4 are respectively arranged on both sides of the discharge port 3, and the two baffles 4 can slide horizontally relative to the mixing drum 1 to open and close the discharge port 3;

[0040] The two driving arms 5 are connected to the two baffles 4 respectively. Specifically, the driving arm 5 includes a transmission section 502 and a fixed section 501. The driving arm 5 is L-shaped as a whole. The length direction of the fixed section 501 is perpendicular to the moving direction of the baffle 4. The length direction of the transmission section 502 is the same as the moving direction of the baffle 4. The first end of the fixed section 501 is connected to the baffle 4, and the second end of the fixed section 501 is connected to the transmission section 502. The gear 6 is located between the two transmission sections 502.

[0041] It should be noted that the lengths of the fixed sections 501 of the two driving arms 5 are different. The first fixed section 501 is longer than the second fixed section 501. The first fixed section 501 is provided with a retreat groove 9. The transmission section 502 connected to the second fixed section 501 can pass through the retreat groove 9.

[0042] The two racks 8 are respectively arranged on the side walls of the two transmission sections 502 close to each other, and the two racks 8 are meshed and connected with the gear 6;

[0043] The power source 7 is used to drive the gear 6 to rotate. In this embodiment, the power source 7 can be a motor, which is directly connected to the gear 6 or connected to the gear 6 through a reduction structure;

[0044] In this embodiment, when it is necessary to open the material discharge port 3, the power source 7 drives the gear 6 to rotate forward, and the gear 6 drives the two driving arms 5 to move away from each other through the two-section rack 8, and the two driving arms 5 respectively move the two baffles 4 in the direction of moving away from each other, so that the material discharge port 3 is opened; when it is necessary to close the material discharge port 3 or reduce the opening diameter of the material discharge port 3, the power source 7 drives the gear 6 to rotate in the opposite direction, and the gear 6 drives the two driving arms 5 to move closer to each other through the two-section rack 8, and the two driving arms 5 respectively move the two baffles 4 in the direction of moving closer to each other, so that the opening diameter of the material discharge port 3 is reduced or closed;

[0045] Through the concrete mixing structure of this embodiment, when the concrete is discharged in stages, the speed of concrete discharge can be controlled by controlling the horizontal positions of the two baffles 4. When the required amount of each discharge is about to be reached during the high-flow rate discharge of concrete, the flow rate of concrete discharge is reduced, so that the amount of each discharge can be controlled more accurately; the movement trajectories of the other two baffles 4 are perpendicular to the discharge direction of the concrete, so that when the baffle 4 closes the discharge port 3, the baffle 4 is only impacted by a small part of the concrete, and when the concrete contacts the baffle 4, it will disperse to the side of the baffle 4 to reduce the impact, so that the opening and closing structure of the discharge port 3 is more stable and has a longer service life.

[0046] Example 2

[0047] This embodiment provides a concrete mixing structure, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0048] See also Figure 3 In this embodiment, the first end of the fixed section 501 has two branch connection points, so that the first end of the fixed section 501 is Y-shaped as a whole, and the two branch connection points are respectively connected to the two sides of the baffle 4;

[0049] In this way, the supporting force of the driving arm 5 on the baffle 4 is more dispersed, so that the bearing capacity of each point on the baffle 4 is more even, thereby making the opening and closing structure of the discharge port 3 more stable.

[0050] Example 3

[0051] This embodiment provides a concrete mixing structure, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0052] In this embodiment, the first end of the fixed section 501 is detachably connected to the baffle 4; the detachable connection can be achieved by means of fasteners or other detachable connection methods in the prior art. Through this connection method, it is convenient to inspect or replace the baffle 4 and the drive arm 5 separately, with better interchangeability and lower cost of use.

[0053] Example 4

[0054] This embodiment provides a concrete mixing structure, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0055] See also Figure 2 and Figure 5In this embodiment, a guide plate is provided on the side where the two baffles 4 are close to each other, and the lower end of the guide plate extends downward; the lower end of the guide plate generally extends downward beyond the lowest position of the opening and closing structure of the discharge port 3, so that during the concrete discharge process, the guide plate can guide the fall of the concrete to avoid splashing of the concrete to both sides, and minimize the adhesion of the concrete to the opening and closing structure of the discharge port 3.

[0056] Example 5

[0057] This embodiment provides a concrete mixing structure, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0058] In this embodiment, a dustproof box 10 (not shown) is provided outside the power source 7 and the gear 6. The dustproof box 10 can protect the power source 7 and the gear 6, thereby extending the service life of the opening and closing structure of the feed port 3.

[0059] The embodiments of the utility model are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A concrete mixing structure, comprising a mixing drum (1), wherein a mixing shaft (2) is provided in the mixing drum (1), and a feeding port (3) is provided at the bottom of the mixing drum (1), characterized in that: Also includes: Two baffles (4), the two baffles (4) being respectively arranged on both sides of the discharge port (3), and the two baffles (4) being able to slide horizontally relative to the mixing drum (1) to open and close the discharge port (3); Two driving arms (5), the two driving arms (5) being connected to the two baffles (4) respectively, and the two driving arms (5) each comprising a transmission section (502) parallel to each other; a gear (6), the gear (6) being located between the two transmission sections (502); Two racks (8), the two racks (8) being respectively arranged on the side walls of the two transmission sections (502) on the sides close to each other, and the two racks (8) being meshingly connected with the gear (6); A power source (7), wherein the power source (7) is used to drive the gear (6) to rotate.

2. A concrete mixing structure according to claim 1, characterized in that: The driving arm (5) further comprises a fixed section (501), a first end of the fixed section (501) being connected to the baffle (4), and a second end of the fixed section (501) being connected to the transmission section (502).

3. A concrete mixing structure according to claim 2, characterized in that: The first end of the fixed section (501) has two branch connection points, and the two branch connection points are respectively connected to two sides of the baffle (4).

4. A concrete mixing structure according to claim 2 or 3, characterized in that: The first end of the fixing section (501) is detachably connected to the baffle (4).

5. A concrete mixing structure according to claim 2, characterized in that: The first fixed section (501) is provided with a retreat groove (9), and the transmission section (502) connected to the second fixed section (501) can pass through the retreat groove (9).

6. A concrete mixing structure according to claim 1, characterized in that: A material guide plate is provided on one side of the two baffle plates (4) close to each other, and the lower end of the material guide plate extends downward.

7. A concrete mixing structure according to claim 1, characterized in that: A dustproof box (10) is provided outside the power source (7) and the gear (6).

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