Folding concrete mixing plant

Abstract

The utility model relates to a folding type concrete mixing plant which comprises a foundation platform and a main machine platform, a folding supporting frame is connected between the main machine platform and the foundation platform, a batching machine and a conveying belt are sequentially arranged on the foundation platform from front to back, a mixing main machine is arranged on the main machine platform, and the folding supporting frame comprises a base and a folding support. The upper end of the folding support is connected with the main machine platform, the folding support has an unfolding position and a folding position in the moving process, and when the folding support is located at the unfolding position, the folding support gradually extends upwards in an inclined mode from front to back so that the main machine platform can have the trend of overturning backwards due to the dead weight; the base is provided with a limiting structure for limiting the folding bracket at the unfolding position, and the conveying belt is detachably connected with the stirring main machine, so that the conveying belt is folded forwards and lapped at the top of the batching machine before the folding bracket moves towards the folding position. The structure compactness is guaranteed, and the height and the length meet the transportation requirements after folding.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete mixing station equipment, in particular to a foldable concrete mixing station. Background Art

[0002] A concrete batching plant, also known as a concrete precasting plant, is a combined unit used for centralized concrete mixing. Due to its high degree of mechanization and automation, it boasts high productivity, guaranteed concrete quality, and cement savings. It is commonly used in large and medium-sized water conservancy, power, and bridge projects, where concrete volumes are large, construction periods are long, and construction sites are concentrated. With the development of municipal construction, batching plants that utilize centralized mixing and provide commercial concrete have shown significant advantages, leading to rapid growth and creating opportunities for the promotion of concrete pumping construction, enabling the combined operation of mixing, conveying, and pouring machinery.

[0003] A concrete mixing station primarily consists of a foundation platform, with one or more batching silos located at the front end. These silos receive aggregates and powdered materials from the storage silos. A discharge port is located at the bottom of the silo, and a conveyor belt is located below the discharge port. A main unit platform is located at the rear end of the platform, elevated to a certain height. A mixing unit is located on this platform, positioned at a height convenient for a mixer truck to pass through and receive the mixed material from the mixing unit. The conveyor belt comprises a horizontal section located at the batching silo and an inclined section connected to the rear end of the horizontal section. The inclined section gradually slopes upward from front to back and extends to the mixing unit's inlet. Material is discharged from the batching silo onto the conveyor belt, which transports it into the mixing unit. Aggregates and powdered materials are mixed within the mixing unit and then discharged from its lower end. A concrete mixer truck then mixes the materials below the mixing unit, completing the mixing and conveying process.

[0004] Existing concrete mixing plants are generally fixed-type, meaning all equipment and components are stored and transported separately and assembled on-site. However, this type of fixed-type concrete mixing plant is cumbersome to transport and install, with complicated processes, which affects the time it takes for the concrete mixing plant to be put into use.

[0005] Foldable concrete mixing plants are currently available. These plants are designed to be foldable. During transportation, the foldable portion only needs to be folded up, effectively reducing the overall volume and height to ensure transportability. During installation, the foldable portion can be unfolded to quickly construct the entire structure, significantly improving the efficiency of the concrete mixing plant.

[0006] For example, Chinese utility model patent application number CN111319135A discloses an integrated, foldable, foundation-free concrete mixing plant. The document describes a foldable support frame beneath the main platform, allowing the platform and mixing unit to fold backward. This folding mechanism utilizes a removable first diagonal brace, the primary support component of the support frame, and a hinged main support frame. This allows the main platform to be folded backwards around its hinged position after the first diagonal brace is removed.

[0007] However, the above folding form has the following problems during actual use and transportation:

[0008] (1) The backward flip folding form can reduce the overall height of the mixing station after folding, but it cannot shorten the front and rear length of the mixing station after folding. This results in that for larger mixing stations with longer transportation lengths, it is still impossible to ensure rapid passability on the road during transportation. In addition, this backward flip folding form does not reasonably utilize the space corresponding to the conveyor belt position on the basic platform.

[0009] (2) The first diagonal brace, which plays a major role in bearing the load, is designed to be detachable. In actual use, during and after the removal of the first diagonal brace, other equipment such as a crane or an external support frame is still required to position and support the main platform to ensure smooth and safe disassembly. However, this will inevitably reduce loading and unloading efficiency and prolong the time it takes to be put into use and disassembled.

[0010] (3) This folding method is effective for small concrete mixer trucks, but for medium and large concrete mixer trucks, the height of the concrete mixer must meet specific requirements after folding. When medium and large concrete mixer trucks need to pass smoothly, the height of the main support frame must be increased. In order to ensure that the bottom of the concrete mixer is basically flush with the foundation platform after folding, the hinge position on the main frame must be raised. This results in the concrete mixer being at a higher height during transportation, which invisibly increases the height and length of the concrete mixing station after folding. Utility Model Content

[0011] The purpose of the utility model is to provide a foldable concrete mixing plant to solve the problems in the prior art that the foldable concrete mixing plant cannot achieve the problem of shortening the overall length when flipping backwards and the folding method affects the safety and efficiency of assembly and disassembly.

[0012] In order to solve the above problems, the foldable concrete mixing station involved in the present utility model adopts the following technical solutions:

[0013] The foldable concrete mixing station includes a basic platform and a mainframe platform arranged above the rear end of the basic platform. A folding support frame is connected between the mainframe platform and the basic platform. A batching machine and a conveyor belt are arranged on the basic platform from front to back. A mixing host is arranged on the mainframe platform. The front end of the conveyor belt extends to the discharge port of the batching machine, and the rear end gradually tilts upward from front to back and extends to the inlet of the mixing host. The folding support frame includes a base fixed to the upper rear end of the basic platform, and also includes a folding bracket movably assembled on the base. The upper end of the folding bracket is aligned with the mainframe platform. The folding bracket is connected to the platform, and the folding bracket has an unfolding position for unfolding the main machine platform and keeping it in an upright posture, and a folding position for folding the main machine platform forward and placing it between the base and the batching machine during the activity. When the folding bracket is in the unfolding position, the folding bracket gradually extends upward from front to back so that the main machine platform has a tendency to flip backward due to its own weight; a limiting structure for limiting the folding bracket in the unfolding position is provided on the base, and the conveyor belt is detachably connected to the mixing host, so that before the folding bracket moves to the folding position, the conveyor belt is folded forward and placed on the top of the batching machine.

[0014] In a preferred embodiment, the folding bracket includes a main support frame hingedly assembled on the base, the hinge axis of the main support frame extends in the left and right directions, and the support frame includes two main rods arranged side by side and spaced apart in the left and right directions, and a cross bar is connected between the main rods.

[0015] In a preferred embodiment, when the folding bracket is in the expanded position, the axis of the main rod gradually extends upward from front to rear, and the limiting structure includes a rear limiting portion arranged on the base, and the rear limiting portion is arranged on the swinging path of the main rod to keep the folding bracket in the expanded position.

[0016] In a preferred embodiment, the rear limiting portion is a rib arranged on the side wall of the base. When the folding bracket is in the unfolded position, the extending direction of the rib is consistent with the extending direction of the main rod so that the two maintain surface contact and limiting.

[0017] In a preferred embodiment, the limiting structure also includes a diagonal support rod connected to the base platform and the rear end of the folding frame, the lower end of the diagonal support rod is detachably connected to the base platform, and the upper end is detachably connected to the folding frame, and the diagonal support rod, the main rod, and the base platform together form a triangular support frame structure.

[0018] In a preferred embodiment, the base platform has an avoidance gap for accommodating the mixing station.

[0019] In a preferred embodiment, the folding bracket includes a parallelogram linkage mechanism connected to the base and the host platform, which includes two sets of main support frames arranged in parallel front and back, so that the mixing host maintains an upright posture during the movement of the folding bracket.

[0020] As described above, the present invention has the following beneficial effects: compared with the prior art, the foldable concrete mixing station involved in the present invention, by designing the folding bracket to fold forward, can fold the mixing main unit forward to between the folding bracket pre-batch machine, so that the overall height of the mixing station can be reduced while the space on the basic platform is reasonably utilized, effectively shortening the front and rear length of the folded mixing station, facilitating loading and transportation, with high space utilization, and can meet the transportation requirements of different types of mixing stations as much as possible.

[0021] At the same time, by combining this base with the folding bracket, and designing the folding bracket to gradually tilt upward from front to back when in the deployed position, the main platform can maintain its backward flipping tendency through its own weight. In actual use, the folding bracket can be maintained in the deployed position solely by the limit structure. Therefore, during subsequent assembly and disassembly, the main platform only needs to be swung backward to raise and forward to lower to complete the assembly process. The overall assembly and disassembly is simple, and no additional disassembly process is required.

[0022] At the same time, the forward folding method, in addition to being able to reasonably use the layout space of the conveyor belt on the basic platform, for different models of mixer trucks, only folding brackets of corresponding lengths need to be designed to meet the corresponding requirements, and the problem of the overall folding bracket being too high after folding will not be caused, ensuring that the structural compactness, height and length meet the transportation requirements after folding. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments:

[0024] Figure 1 This is a structural diagram of a specific embodiment 1 of the foldable concrete mixing station of the present utility model;

[0025] Figure 2 for Figure 1 Schematic diagram of the folding posture;

[0026] Figure 3 for Figure 2 Placement diagram in transport state;

[0027] Figure 4 This is a schematic structural diagram of Example 2.

[0028] Explanation of the accompanying drawings: 1-basic platform 1; 2-main machine platform 2; 3-folding support frame 3; 4-batch machine 4; 5-conveyor belt 5; 6-mixing main machine 6; 7-base 7; 8-folding bracket 8; 9-hinge shaft 9; 10-main support frame 10; 12-diagonal support rod 12; 13-guard 13; 14-parallelogram mechanism 14. DETAILED DESCRIPTION

[0029] In order to make the technical objectives, technical solutions, and beneficial effects of the present invention more clear, the technical solutions of the present invention are further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. That is, the embodiments described herein are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in a variety of different configurations.

[0030] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an intermediate element at the same time. The terms "first", "second" and similar words do not indicate any order, quantity or importance, but are only used to distinguish different components. The terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] The specific embodiment 1 of the foldable concrete mixing station involved in the present utility model is as follows: Figures 1 to 3 As shown, the foldable concrete mixing station includes a base platform 1 and a main platform 2 arranged above the rear end of the base platform 1. A folding support frame 3 is connected between the main platform 2 and the base platform 1. The structures of the base platform 1 and the main platform 2 are consistent with the existing technology. They are basically frame-type plane structures, which are formed by combining cross beams, longitudinal beams, diagonal braces, etc.

[0033] Arranged from front to back on the base platform 1 are a batching machine 4 and a conveyor belt 5. Their structures are consistent with existing technology. The batching machine 4 receives material from the storage bin and performs functions such as material distribution and weighing. The conveyor belt 5 utilizes an inclined belt conveyor, which transports aggregate from the conveyor belt 5 to the main mixer 6. Its specific components include a base frame, conveyor belt 5, rollers, a drum, a tensioner, and a spur pulley. The conveyor belt 5 can utilize a herringbone belt structure, but this is not a specific limitation. Those skilled in the art can design it as needed.

[0034] A mixer 6 is arranged on the main platform 2. The front end of the conveyor belt 5 extends to the discharge port of the batching machine 4, and the rear end gradually extends upward from the front to the back to the inlet of the mixer 6. The batching machine 4 discharges the material, and the material falls onto the conveyor belt 5. The conveyor belt 5 transports the material into the mixer 6. After the aggregate and powder are mixed in the mixer 6, the material is discharged from the lower end of the mixer 6. The concrete mixer truck passes under the mixer 6 to mix the materials and complete the mixing and transportation of the materials.

[0035] Regarding the folding support frame 3, the folding support frame 3 includes a base 7 fixed to the upper rear end of the base platform 1. The base 7 includes two vertical plates arranged on the base platform 1 at intervals on the left and right. A hinge shaft 9 is arranged at the middle position of the vertical plate. The folding support frame 3 also includes a folding bracket 8 movably assembled on the base 7. Specifically in this embodiment, the folding bracket 8 includes a main support frame 10 hingedly assembled on the base 7. The hinge shaft 9 of the main support frame 10 extends in the left-right direction. The support frame includes two main rods arranged side by side in the left-right direction at intervals, and a cross bar is connected between the main rods. As shown in the figure, one end of the main rod is connected to the base 7, and the other end is connected to the main platform 2. During the swinging process of the main rod, it can drive the main platform 2 to descend forward and fold and to lift backward and unfold.

[0036] In fact, in order to meet the connection between the folding bracket 8 and the main platform 2, the upper end of the folding bracket 8 is connected to the main platform 2. The folding bracket 8 has an unfolding position for unfolding the main platform 2 and maintaining an upright posture during the activity, and a folding position for folding the main platform 2 forward and placing it between the base 7 and the batching machine 4. When in the unfolded position, the main platform 2 is located diagonally above the rear of the base platform 1, and when in the folded position, the main platform 2 is located between the base 7 and the batching machine 4.

[0037] By flipping and folding the main platform 2 forward, the height of the entire mixing station can be reduced while the space on the basic platform 1 is reasonably utilized, effectively shortening the front and rear length of the folded mixing station, facilitating loading and transportation, and having high space utilization, which can meet the transportation requirements of different types of mixing stations as much as possible.

[0038] At the same time, a single-point hinge on a two-dimensional plane is adopted, that is, the main platform 2 is driven by the swing of the main rod. During the actual folding and unfolding process, there is no need to disassemble or assemble other parts. The main platform 2 can be switched between the unfolded position and the folded position by lifting and lowering operations. The forward folding method not only makes rational use of the layout space of the conveyor belt 5 on the base platform 1, but also only requires the design of a folding bracket 8 of the corresponding length for different types of mixer trucks to meet the corresponding requirements. The problem of the folding bracket 8 being too high after folding is not caused, ensuring that the structure is compact, and the height and length meet the transportation requirements after folding.

[0039] When the folding bracket 8 is in the expanded position, it gradually extends upward from the front to the rear, so that the main unit platform 2 has a tendency to flip backward under its own weight. The base 7 is provided with a limiting structure for limiting the folding bracket 8 in the expanded position. The conveyor belt 5 is detachably connected to the mixing main unit 6, so that before the folding bracket 8 moves to the folded position, the conveyor belt 5 can be folded forward and placed on top of the batching machine 4. In other words, in order to adapt to the storage space of the folded mixing main unit 6, the inclined section of the conveyor belt 5 can be directly removed, flipped forward in the opposite direction, and placed on top of the batching machine 4, thereby freeing up space between the batching machine 4 and the base 7, making it easier to place the mixing main unit 6.

[0040] This single-pole folding method allows for adaptability in actual use by selecting main poles of different lengths for different types of mixer truck heights. When the main pole is swung to the folded position, the height of the base platform 1 remains the same as the top height of the base 7, while the main mixer 6 remains placed on the base platform 1, without increasing the height of the folded bracket 8.

[0041] In order to meet the limitation requirements of the folding bracket 8 when it is in the expanded position, when the folding bracket 8 is in the expanded position, the axis of the main rod gradually extends upward from front to rear, and the limiting structure includes a rear limiting part arranged on the base 7, and the rear limiting part is arranged on the swinging path of the main rod to keep the folding bracket 8 in the expanded position.

[0042] Specifically, in this embodiment, the rear limiting portion is a rib 13 disposed on the side wall of the base 7. When the folding bracket 8 is in the unfolded position, the extending direction of the rib 13 is consistent with the extending direction of the main rod, so that the two maintain surface contact and limit position. This surface contact can maintain the contact and limit position stability of the two, avoiding vibration and wear.

[0043] Of course, in other embodiments, the rear limit portion may also be implemented by means of a lock pin plug-in, which is not specifically limited.

[0044] Preferably, to prevent the mixing main unit 6 from vibrating and causing the folding frame to shake or vibrate on the base 7, the limiting structure also includes a diagonal support rod 12 connected to the base platform 1 and the rear end of the folding frame. The lower end of the diagonal support rod 12 is detachably connected to the base platform 1, and the upper end is detachably connected to the folding frame. The diagonal support rod 12, the main rod, and the base platform 1 together form a triangular support frame structure. The triangular support frame structure further provides stable support for the main unit platform 2. In actual use, the diagonal support rod 12 basically does not bear any force and only serves to further limit the position of the mixing main unit 6 from pulling and pushing.

[0045] Furthermore, to facilitate placement of the main platform 2 on the base platform 1, a clearance is provided on the base platform 1 to accommodate the concrete mixing station. Conventionally, due to the frame structure of the base platform 1, this clearance is formed by the corresponding horizontal and longitudinal beams. The main platform 2 rests on the base platform 1 under its own weight, thus achieving foldability.

[0046] Example 2: The difference from Example 1 is that Figure 4 As shown, the folding bracket 8 includes a parallelogram linkage 14 connected to the base 7 of the base platform 1 and the main unit platform 2. The parallelogram linkage 14 comprises two sets of parallel main support frames arranged in a front-to-rear manner, ensuring that the mixer unit remains upright during the movement of the folding bracket. The parallelogram linkage 14 enables the main unit platform 2 to fold forward and downward, resulting in a more stable and convenient structure and effectively preventing the overall mixer unit from tilting.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate and not to limit the technical solutions of the present invention. Any equivalent replacement of the present invention and any modification or partial replacement that does not depart from the spirit and scope of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A foldable concrete mixing station, comprising a base platform and a mainframe platform arranged above the rear end of the base platform, a folding support frame being connected between the mainframe platform and the base platform, a batching machine and a conveyor belt being arranged in sequence from front to back on the base platform, a mainframe mixing station being arranged on the mainframe platform, the front end of the conveyor belt extending to the discharge port of the batching machine, and the rear end gradually extending upward from front to back to the inlet of the mainframe mixing station, characterized in that: The folding support frame includes a base fixed to the upper rear end of the basic platform, and also includes a folding bracket movably assembled on the base, the upper end of the folding bracket is connected to the main machine platform, and the folding bracket has an unfolding position for unfolding the main machine platform and maintaining an upright posture during the movement, and a folding position for folding the main machine platform forward and placing it between the base and the batching machine. When the folding bracket is in the unfolding position, the folding bracket gradually extends upward from front to back so that the main machine platform has a tendency to flip backward due to its own weight; a limiting structure for limiting the folding bracket in the unfolding position is provided on the base, and the conveyor belt is detachably connected to the mixing host so that the conveyor belt is folded forward and placed on the top of the batching machine before the folding bracket moves to the folding position.

2. The foldable concrete mixing plant according to claim 1, characterized in that: The folding bracket includes a main support frame hingedly assembled on the base, the hinge axis of the main support frame extends in the left-right direction, and the support frame includes two main rods arranged side by side in the left-right direction, and a cross bar is connected between the main rods.

3. The foldable concrete mixing plant according to claim 2, characterized in that: When the folding bracket is in the unfolded position, the axis of the main rod gradually extends upward from front to back, and the limiting structure includes a rear limiting portion arranged on the base, which is arranged on the swing path of the main rod to keep the folding bracket in the unfolded position.

4. The foldable concrete mixing plant according to claim 3, characterized in that: The rear limiting portion is a rib arranged on the side wall of the base. When the folding bracket is in the unfolded position, the extending direction of the rib is consistent with the extending direction of the main rod so that the two maintain surface contact and limiting.

5. The foldable concrete mixing plant according to claim 4, characterized in that: The limiting structure also includes an oblique support rod connected to the rear end of the base platform and the folding frame. The lower end of the oblique support rod is detachably connected to the base platform, and the upper end is detachably connected to the folding frame. The oblique support rod, the main rod, and the base platform together form a triangular support frame structure.

6. The foldable concrete mixing plant according to claim 4, characterized in that: The basic platform is provided with an avoidance gap for accommodating the mixing station.

7. The foldable concrete mixing plant according to claim 1, characterized in that: The folding bracket includes a parallelogram connecting rod mechanism connected to the base and the host platform, which includes two sets of main support frames arranged in parallel front and back, so that the mixing host can maintain an upright posture during the movement of the folding bracket.

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