Premixed concrete batching device

Abstract

The utility model relates to the technical field of batching devices, and discloses a premixed concrete batching device which comprises a batching box, a first rotating shaft, a second rotating shaft, stirring blades, a sealing plate, an air cylinder, a connector, a support and a connecting rod. During use, the air cylinders on the two sides are controlled to work, and then the connectors on the two sides can be driven to move oppositely or reversely. Under pulling or pushing of the connecting rods on the two sides, the supports on the two sides can drive the sealing plates on the two sides to rotate, and therefore the discharging port is opened or closed. And when the discharge port is in a closed state, the precast concrete can be proportioned. At the moment, a first rotating shaft and a second rotating shaft are driven to rotate, and then a plurality of stirring blades are driven to rotate, so that various mixtures in the batching box are stirred. And when the discharge port is in an open state, the precast concrete can be discharged. As the sealing plates on the two sides can rotate to the two sides of the discharging opening, falling materials cannot be blocked. And materials can be discharged conveniently, and can fall into one place in a concentrated manner.

Description

Technical Field

[0001] The present application relates to the technical field of batching devices, for example, to a ready-mixed concrete batching device. Background Art

[0002] The related art (Announcement No.: CN220840843U) discloses a batching device for ready-mixed concrete, including a storage mechanism. Two batching mechanisms are fixedly connected below the storage mechanism. A discharge hopper is fixedly connected below the two batching mechanisms. Two forward and reverse motors are fixedly connected to one side of the two discharge hoppers. Two flip plates are movably connected to the inner walls of the two discharge hoppers. Each flip plate is fixedly connected to the output end of the corresponding forward and reverse motor.

[0003] In the process of implementing the above embodiments, it is found that there are at least the following problems in the related art:

[0004] During use, the batching device for premixed concrete controls the two forward and reverse motors on the discharge hopper to drive the two flip plates in the discharge hopper to rotate, so that the materials automatically fall out of the discharge hopper. However, the materials will not only fall out from the gap between the two flip plates, but also from the gap between the two flip plates and the discharge hopper, resulting in the materials not falling in one place. In addition, since the two flip plates are located in the middle of the discharge hopper, they will also block the falling materials, making it inconvenient to discharge the materials.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0006] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0007] The embodiments of the present disclosure provide a ready-mixed concrete batching device to solve the problems raised in the above-mentioned background technology.

[0008] In some embodiments, a ready-mixed concrete batching device includes: a batching box, the batching box includes a discharge port located on its bottom wall; a first rotating shaft, rotatably disposed on the side wall of the batching box along the length direction of the batching box; a second rotating shaft, rotatably disposed on the side wall of the batching box along the length direction of the batching box, and located on both sides of the first rotating shaft along the width direction of the batching box; stirring blades, evenly installed on the first rotating shaft and the second rotating shafts on both sides, and both are located inside the batching box, and the multiple stirring blades installed on the first rotating shaft and the multiple stirring blades installed on the second rotating shafts on both sides are staggered; a sealing plate, which can A rotatable device is installed on the outer wall of the ingredient box, and is located on both sides of the ingredient box along the length direction of the ingredient box, and the sealing plates on both sides are used to open or close the discharge port; a cylinder is installed on the bottom wall of the ingredient box and is located outside the ingredient box, and is located on both sides of the discharge port along the length direction of the ingredient box, and the moving ends of the cylinders on both sides are directly opposite; joints are respectively installed on the moving ends of the cylinders on both sides; supports are respectively installed on the sealing plates on both sides; connecting rods are respectively rotatably installed between the joints and the supports on both sides; wherein, the first rotating shaft and the second rotating shaft on both sides can be controlled to rotate to drive the multiple stirring blades to rotate.

[0009] Optionally, it also includes: a first gear, installed on the first rotating shaft and located inside the ingredient box; a second gear, installed on the second rotating shaft on both sides, and the second gears on both sides are meshed with the first gear; wherein the first rotating shaft or the second rotating shaft on either side can be rotated in a controlled manner to drive the multiple mixing blades to rotate.

[0010] Optionally, it also includes: a motor located outside the ingredient box; a coupling installed between the rotating end of the motor and the first rotating shaft; wherein, driven by the motor, the plurality of stirring blades perform rotational motion.

[0011] Optionally, it also includes: a support rod connected to the outer wall of the ingredient box; a mounting plate connected to the support rod; wherein the motor is mounted on the mounting plate.

[0012] Optionally, it also includes: butterfly hinges, which are respectively installed between the sealing plates on both sides and the outer walls of the ingredient box.

[0013] Optionally, it also includes: pads, which are respectively installed between the butterfly hinges on both sides and the outer walls of the ingredient box.

[0014] Optionally, it also includes: a mechanical seal, which is respectively installed between the first rotating shaft and the second rotating shaft on both sides and the side walls of the ingredient box.

[0015] Optionally, it also includes: a mounting seat, which is installed on the bottom wall of the ingredient box and is located outside the ingredient box, along the length direction of the ingredient box, and located on both sides of the discharge port; wherein the cylinders on both sides are respectively installed on the mounting seats on both sides.

[0016] Optionally, it also includes: support legs, which are respectively installed at the four corners of the bottom wall of the ingredient box, and the support legs at the four corners are all located outside the ingredient box.

[0017] The ready-mixed concrete batching device provided in the embodiments of the present disclosure can achieve the following technical effects:

[0018] The disclosed embodiment provides a ready-mixed concrete batching device, including a batching box, a first rotating shaft, a second rotating shaft, a stirring blade, a sealing plate, a cylinder, a joint, a support and a connecting rod. The batching box includes a discharge port located on its bottom wall, and the discharge port is used to discharge a variety of mixed materials in the batching box. The first rotating shaft is rotatably arranged on the side wall of the batching box along the length direction of the batching box, and can rotate relative to the batching box. The second rotating shaft is rotatably arranged on the side wall of the batching box along the length direction of the batching box, and is located on both sides of the first rotating shaft along the width direction of the batching box. The second rotating shafts on both sides can rotate relative to the batching box. The stirring blades are evenly installed on the first rotating shaft and the second rotating shafts on both sides, and are all located inside the batching box, and are used to stir the various mixed materials in the batching box. The multiple stirring blades installed on the first rotating shaft are staggered with the multiple stirring blades installed on the second rotating shafts on both sides, so as to improve the stirring effect of the various mixed materials. The sealing plate is rotatably installed on the outer wall of the batching box, and is located on both sides of the batching box along the length direction of the batching box. The sealing plates on both sides can rotate relative to the batching box to open or close the discharge port. The cylinder is installed on the bottom wall of the batching box and is located outside the batching box to provide driving force. The cylinder is located on both sides of the discharge port along the length direction of the batching box, and the moving ends of the cylinders on both sides are directly opposite to each other, and are respectively used to drive the sealing plates on both sides to rotate. The joints are respectively installed at the moving ends of the cylinders on both sides, and move towards or in the opposite direction driven by the cylinders on both sides. The supports are respectively installed on the sealing plates on both sides, and are respectively used to drive the sealing plates on both sides to move. The connecting rods are respectively rotatably installed between the joints and the supports on both sides, and the connecting rods on both sides can respectively rotate relative to the joints and the supports on both sides, and are all used to transmit driving force. Among them, the first rotating shaft and the second rotating shafts on both sides can be rotated in a controlled manner to drive multiple mixing blades to rotate.

[0019] During use, the cylinders on both sides are controlled to work, which can drive the joints on both sides to move in opposite directions or in opposite directions. Under the pull or push of the connecting rods on both sides, the supports on both sides can drive the sealing plates on both sides to rotate, thereby opening or closing the discharge port. When the discharge port is in a closed state, the precast concrete can be mixed. At this time, driven by external force, the first rotating shaft and the second rotating shaft can rotate. Then drive multiple mixing blades to rotate, thereby stirring the various mixed materials in the batching box to make them evenly mixed. When the discharge port is in an open state, the precast concrete with the completed proportioning can be discharged. Since the sealing plates on both sides can be rotated to both sides of the discharge port, there will be no obstruction to the falling materials. It is convenient for discharging and the materials can be concentrated in one place.

[0020] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] One or more embodiments are exemplarily described by corresponding drawings, and these exemplary descriptions and drawings do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are considered similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0022] Figure 1 is a schematic cross-sectional structural diagram of a ready-mixed concrete batching device provided in an embodiment of the present disclosure;

[0023] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0024] Figure 3 is a schematic diagram of the main structure of a ready-mixed concrete batching device provided in an embodiment of the present disclosure;

[0025] Figure 4 It is a schematic diagram of the top structure of a ready-mixed concrete batching device provided in an embodiment of the present disclosure.

[0026] Reference numerals:

[0027] 1: batching box; 2: first rotating shaft; 3: second rotating shaft; 4: stirring blade; 5: sealing plate; 6: cylinder; 7: joint; 8: support; 9: connecting rod; 10: first gear; 11: second gear; 12: motor; 13: support rod; 14: mounting plate; 15: butterfly hinge; 16: spacer; 17: mechanical seal; 18: mounting seat; 19: supporting leg. DETAILED DESCRIPTION

[0028] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0029] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0030] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0031] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0032] Unless otherwise stated, the term "plurality" means two or more.

[0033] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0034] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0035] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0036] Combination Figures 1 to 4 As shown, the embodiment of the present disclosure provides a ready-mixed concrete batching device, including a batching box 1, a first rotating shaft 2, a second rotating shaft 3, a stirring blade 4, a sealing plate 5, a cylinder 6, a joint 7, a support 8 and a connecting rod 9. The batching box 1 includes a discharge port located on its bottom wall, and the discharge port is used to discharge a variety of mixed materials in the batching box 1. The first rotating shaft 2 is rotatably arranged on the side wall of the batching box 1 along the length direction of the batching box 1, and can rotate relative to the batching box 1. The second rotating shaft 3 is rotatably arranged on the side wall of the batching box 1 along the length direction of the batching box 1, and is located on both sides of the first rotating shaft 2 along the width direction of the batching box 1. The second rotating shaft 3 on both sides can rotate relative to the batching box 1. The stirring blade 4 is evenly installed on the first rotating shaft 2 and the second rotating shafts 3 on both sides, and is located inside the batching box 1, and is used to stir the various mixed materials in the batching box 1. The multiple stirring blades 4 installed on the first rotating shaft 2 and the multiple stirring blades 4 installed on the second rotating shafts 3 on both sides are staggered and distributed to improve the stirring effect of various mixed materials. The sealing plate 5 is rotatably installed on the outer wall of the batching box 1, and is located on both sides of the batching box 1 along the length direction of the batching box 1. The sealing plates 5 on both sides can rotate relative to the batching box 1 to open or close the discharge port. The cylinder 6 is installed on the bottom wall of the batching box 1 and is located outside the batching box 1 to provide driving force. The cylinder 6 is located on both sides of the discharge port along the length direction of the batching box 1, and the moving ends of the cylinders 6 on both sides are facing each other, respectively used to drive the sealing plates 5 on both sides to rotate. The joints 7 are respectively installed on the moving ends of the cylinders 6 on both sides, and move towards or in the opposite direction driven by the cylinders 6 on both sides. The supports 8 are respectively installed on the sealing plates 5 on both sides, and are respectively used to drive the sealing plates 5 on both sides to move. The connecting rods 9 are rotatably installed between the joints 7 and the support 8 on both sides, and the connecting rods 9 on both sides can rotate relative to the joints 7 and the support 8 on both sides, and are used to transmit driving force. Among them, the first rotating shaft 2 and the second rotating shafts 3 on both sides can be controlled to rotate to drive the multiple stirring blades 4 to rotate.

[0037] The disclosed embodiment provides a premixed concrete batching device, which can drive the joints 7 on both sides to move toward or in the opposite direction by controlling the operation of the cylinders 6 on both sides. Under the pulling or pushing of the connecting rods 9 on both sides, the supports 8 on both sides can drive the sealing plates 5 on both sides to rotate, thereby opening or closing the discharge port. When the discharge port is in a closed state, the precast concrete can be proportioned. At this time, driven by an external force, the first rotating shaft 2 and the second rotating shaft 3 can rotate. Then drive multiple mixing blades 4 to rotate, thereby stirring the various mixed materials in the batching box 1 to make them evenly mixed. When the discharge port is in an open state, the precast concrete with the completed proportioning can be discharged. Since the sealing plates 5 on both sides can be rotated to both sides of the discharge port, there will be no obstruction to the falling materials. It is convenient for discharging, and the materials can be concentrated and dropped in one place.

[0038] Optionally, combined Figure 4 As shown, the mixing box 1 further includes a first gear 10 and a second gear 11. The first gear 10 is mounted on the first rotating shaft 2 and is located inside the mixing box 1. The second gear 11 is respectively mounted on the second rotating shafts 3 on both sides, and the second gears 11 on both sides are meshed with the first gear 10. The first rotating shaft 2 or the second rotating shaft 3 on either side can be controlled to rotate to drive the plurality of mixing blades 4 to rotate.

[0039] In the disclosed embodiment, it also includes a first gear 10 installed on the first rotating shaft 2 and a second gear 11 installed on the second rotating shafts 3 on both sides. The second gears 11 on both sides are meshed with the first gear 10 to transmit the driving force together. During use, driven by an external force, the first rotating shaft 2 or the second rotating shaft 3 on either side rotates, and the meshing between the teeth of the first gear 10 and the second gears 11 on both sides can drive the multiple stirring blades 4 to rotate. In addition, since the multiple stirring blades 4 installed on the first rotating shaft 2 rotate in opposite directions to the multiple stirring blades 4 installed on the second rotating shafts 3 on both sides, the stirring effect of various mixed materials is further improved.

[0040] Optionally, combined Figure 1 , Figure 3 and Figure 4 As shown, it also includes a motor 12 and a coupling. The motor 12 is located outside the batching box 1. The coupling is installed between the rotating end of the motor 12 and the first rotating shaft 2. Wherein, under the drive of the motor 12, the plurality of stirring blades 4 rotate.

[0041] In the disclosed embodiment, it also includes a motor 12 located outside the batching box 1 and a coupling installed between the rotating end of the motor 12 and the first rotating shaft 2. The motor 12 is used to provide driving force, and the coupling is used to transmit driving force. During use, the motor 12 is controlled to work, and through the coupling, the first rotating shaft 2 can be driven to rotate, and then the first gear 10 can be driven to rotate. Through the meshing action between the teeth, the second gears 11 on both sides can be driven to rotate in the opposite direction. Then the second rotating shafts 3 on both sides are driven to rotate in the opposite direction, and finally the multiple stirring blades 4 installed on the first rotating shaft 2 and the multiple stirring blades 4 installed on the second rotating shafts 3 on both sides rotate in opposite directions. In addition, the method of using one motor 12 to drive the first rotating shaft 2 and the second rotating shafts 3 on both sides to rotate simultaneously reduces the number of power sources used.

[0042] Optionally, combined Figure 1 , Figure 3 and Figure 4 As shown, it also includes a support rod 13 and a mounting plate 14. The support rod 13 is connected to the outer wall of the batching box 1. The mounting plate 14 is connected to the support rod 13. Among them, the motor 12 is installed on the mounting plate 14.

[0043] In the disclosed embodiment, it also includes a support rod 13 connected to the outer wall of the batching box 1 and a mounting plate 14 connected to the support rod 13. The mounting plate 14 is used to support and install the drive motor 12 to fix the position of the motor 12.

[0044] Optionally, combined Figures 1 to 3 As shown, it also includes a butterfly hinge 15. The butterfly hinge 15 is installed between the sealing plates 5 on both sides and the outer wall of the batching box 1 respectively.

[0045] In the disclosed embodiment, butterfly hinges 15 are also included, which are respectively installed between the sealing plates 5 on both sides and the outer wall of the batching box 1. The butterfly hinges 15 on both sides are used as connecting parts to enable the sealing plates 5 on both sides to rotate relative to the batching box 1.

[0046] Optionally, combined Figures 1 to 3 As shown, it also includes a cushion block 16. The cushion block 16 is installed between the butterfly hinges 15 on both sides and the outer wall of the batching box 1 respectively.

[0047] In the disclosed embodiment, it also includes a pad 16 installed between the butterfly hinges 15 on both sides and the outer wall of the batching box 1. The pads 16 on both sides are used to support and raise the height to adjust the relative position of the butterfly hinges 15 on both sides and the batching box 1.

[0048] Optionally, combined Figure 1 , Figure 3 and Figure 4 As shown, it also includes a mechanical seal 17. The mechanical seal 17 is installed between the first rotating shaft 2 and the second rotating shafts 3 on both sides and the side walls of the batching box 1 respectively.

[0049] In the embodiment of the present disclosure, a mechanical seal 17 is also included, which is respectively installed between the first rotating shaft 2 and the second rotating shafts 3 on both sides and the side wall of the batching box 1. The mechanical seal will be used to play a sealing protection role and improve the accuracy of the first rotating shaft 2 and the second rotating shafts 3 on both sides when they rotate relative to the batching box 1.

[0050] Optionally, combined Figures 1 to 3 As shown, it also includes a mounting seat 18. The mounting seat 18 is mounted on the bottom wall of the batching box 1 and is located outside the batching box 1, along the length direction of the batching box 1, and is located on both sides of the discharge port. The cylinders 6 on both sides are respectively mounted on the mounting seats 18 on both sides.

[0051] In the embodiment of the present disclosure, it also includes a mounting seat 18 mounted on the bottom wall of the batching box 1, located outside the batching box 1 and located on both sides of the discharge port along the length direction of the batching box 1. The mounting seats 18 on both sides are respectively used to support and install the cylinders 6 on both sides, so as to facilitate the disassembly and maintenance of the cylinders 6 on both sides in the later stage.

[0052] Optionally, combined Figure 1 , Figure 3 and Figure 4 As shown, it also includes support legs 19. The support legs 19 are respectively installed at the four corners of the bottom wall of the batching box 1, and the support legs 19 at the four corners are all located outside the batching box 1.

[0053] In the disclosed embodiment, it also includes support legs 19 respectively installed at the four corners of the bottom wall of the batching box 1 and all located outside the batching box 1. The support legs 19 at the four corners are all used to abut against the ground to support the entire device.

[0054] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A ready-mixed concrete batching device, characterized in that: include: A batching box, the batching box comprising a discharge port located on a bottom wall thereof; A first rotating shaft is rotatably disposed on a side wall of the ingredient box along a length direction of the ingredient box; A second rotating shaft is rotatably disposed through the side wall of the batching box along the length direction of the batching box and is located on both sides of the first rotating shaft along the width direction of the batching box; The stirring blades are evenly installed on the first rotating shaft and the second rotating shafts on both sides, and are all located inside the batching box. The plurality of stirring blades installed on the first rotating shaft and the plurality of stirring blades installed on the second rotating shafts on both sides are staggered. A sealing plate is rotatably mounted on the outer wall of the batching box and is located on both sides of the batching box along the length direction of the batching box, and the sealing plates on both sides are used to open or close the discharge port; The cylinder is installed on the bottom wall of the batching box and is located outside the batching box, along the length direction of the batching box, and is located on both sides of the discharge port, with the moving ends of the cylinders on both sides facing each other; Joints, respectively installed at the moving ends of the cylinders on both sides; Supports, respectively installed on the sealing plates on both sides; Connecting rods are rotatably mounted between the joints and the supports on both sides; Wherein, the first rotating shaft and the second rotating shafts on both sides can be controlled to rotate to drive the plurality of stirring blades to perform rotational motion.

2. A ready-mixed concrete batching device according to claim 1, characterized in that: Also includes: A first gear, mounted on the first rotating shaft and located inside the batching box; A second gear is installed on the second rotating shaft at both sides, and the second gears at both sides are meshed with the first gear; Wherein, the first rotating shaft or the second rotating shaft on either side can be controlled to rotate to drive the plurality of stirring blades to perform rotational motion.

3. A ready-mixed concrete batching device according to claim 2, characterized in that: Also includes: A motor, located outside the batching box; A coupling, installed between the rotating end of the motor and the first rotating shaft; Wherein, driven by the motor, the plurality of stirring blades perform a rotational motion.

4. A ready-mixed concrete batching device according to claim 3, characterized in that: Also includes: A support rod connected to the outer wall of the batching box; A mounting plate connected to the support rod; Wherein, the motor is mounted on the mounting plate.

5. A ready-mixed concrete batching device according to claim 1, characterized in that: Also includes: The butterfly hinges are respectively installed between the sealing plates on both sides and the outer walls of the ingredient box.

6. A ready-mixed concrete batching device according to claim 5, characterized in that: Also includes: The cushion blocks are respectively installed between the butterfly hinges on both sides and the outer walls of the ingredient box.

7. A ready-mixed concrete batching device according to any one of claims 1 to 6, characterized in that: Also includes: Mechanical seals are respectively installed between the first rotating shaft and the second rotating shaft on both sides and the side walls of the ingredient box.

8. A ready-mixed concrete batching device according to any one of claims 1 to 6, characterized in that: Also includes: A mounting seat is mounted on the bottom wall of the batching box and is located outside the batching box, along the length direction of the batching box, and on both sides of the discharge port; Wherein, the cylinders on both sides are respectively installed on the mounting seats on both sides.

9. A ready-mixed concrete batching device according to any one of claims 1 to 6, characterized in that: Also includes: The supporting legs are respectively installed at the four corners of the bottom wall of the batching box, and the supporting legs at the four corners are all located outside the batching box.

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