A concrete green body turnover production line and a turnover method thereof

Abstract

The application discloses a concrete blank overturning production line and an overturning method thereof, and belongs to the field of concrete production equipment. The production line comprises an overturning machine and a bottom plate conveying device. The overturning machine comprises a base, a support provided on the base, a first overturning assembly and a first overturning driving element, the first overturning assembly being hinged to the support, the first overturning driving element driving the first overturning assembly to rotate, a second overturning assembly and a second overturning driving element, the second overturning assembly being hinged to the support or the first overturning assembly, the second overturning driving element driving the second overturning assembly to rotate, and a locking device connecting the first overturning assembly and the second overturning assembly when the first overturning assembly and the second overturning assembly intersect at 90 DEG. The bottom plate conveying device is arranged on the two sides and above the overturning machine. The overturning method adopts the overturning production line, and can simultaneously perform the feeding and discharging work on the two sides of the overturning machine, thereby effectively improving the production efficiency of the concrete block board.

Description

Technical Field

[0001] This invention belongs to the field of concrete production equipment, and more specifically, relates to a concrete billet turning production line and its turning method. Background Technology

[0002] Currently, in the autoclaved aerated concrete (AAC) product manufacturing industry, block and slab blanks generally need to be rotated 90° to remove the bottom layer before being fed into the next process. However, existing semi-finished product turning machines typically employ an integrated structure with the turning body arranged at a 90-degree angle. When these machines are operating, they often require waiting for the loading and unloading of materials on one side to be completed before they can begin work on the other side. This prevents the two sides from operating synchronously, resulting in low overall efficiency and failing to meet the demands of increased production speed and efficiency in high-capacity AAC block and slab production lines.

[0003] For example, Chinese patent application number CN202010734214.7, published on October 30, 2020, discloses a non-powered aerated concrete panel turning platform, including a base and an L-shaped turning platform. Support blocks are rotatably mounted at the middle position on both sides of the L-shaped turning platform, and the two support blocks are fixedly connected to the two sides of the base. Hydraulic cylinders are hinged to the sides of the L-shaped turning platform near the support blocks, and hinge seats are hinged to the ends of the two hydraulic cylinders away from the L-shaped turning platform. Both hinge seats are fixed to the outer wall of the top of the base by bolts. A bracket is fixed to the outer wall of the L-shaped turning platform near the base, and a counterweight assembly is provided on the side wall of the bracket. A buffer assembly is provided on the top of the base near the bracket positions of the two support blocks.

[0004] The aforementioned solution uses a 90-degree integrated structure for the tilting machine. This results in a problem where the tilting machine must wait for the loading and unloading of materials on one side to be completed before it can work on the other side. The work on both sides cannot be synchronized, leading to low efficiency. Therefore, existing concrete block production lines designed with this type of tilting machine also have low billet tilting efficiency, thus affecting the overall production efficiency of concrete block panels.

[0005] For example, Chinese patent application number CN202011365702.1, published on June 3, 2022, discloses a production line for autoclaved aerated concrete (AAC) panels and blocks. The production line includes: a raw material processing section located next to the raw material storage yard, comprising equipment such as a three-compartment hopper and belt conveyor; a steel mesh cage fabrication section located on the second floor of the curing room, comprising equipment such as a steel bar straightening and cutting machine and an automatic mesh welding machine; a batching and pouring section, comprising equipment such as a pouring transfer vehicle and a pouring mixer; a curing section located in the first-floor curing room, comprising equipment such as a positioning device and a mold cart; a cutting section comprising equipment such as a tilting crane and a cutting trolley; a grouping and curing section located on the first floor, comprising equipment such as a curing car return traction machine and an in-vessel transfer vehicle; and a finished product processing section located in the area behind the autoclave, comprising equipment such as an out-of-vessel transfer vehicle and a finished product stacking crane. The concrete block production line uses a tilting machine with an overall structure where the tilting body is arranged at a 90-degree angle, which affects production efficiency. Summary of the Invention

[0006] 1. The problem to be solved

[0007] To address the problem that the low turnover efficiency of existing concrete billets affects the overall production efficiency of concrete block slabs, this invention provides a concrete billet turnover production line and its turnover method. By improving the structure of the turnover machine and combining it with the corresponding turnover method, the loading and unloading operations on both sides of the turnover machine can be carried out simultaneously, effectively improving the production efficiency of concrete block slabs.

[0008] 2. Technical Solution

[0009] To solve the above problems, the present invention adopts the following technical solution.

[0010] A concrete billet turning production line includes a turning machine and a bottom plate conveying device;

[0011] The flipping machine includes a base, a first flipping assembly, a first flipping drive, a second flipping assembly, a second flipping drive, and a locking device;

[0012] The base is provided with a support; the first flipping component is hinged to the support, and the first flipping drive is disposed on the base and drives the first flipping component to rotate; the second flipping component is hinged to the support or the first flipping component, and the second flipping drive is disposed on the base and drives the second flipping component to rotate.

[0013] When the first flipping component and the second flipping component intersect at 90°, connect the first flipping component and the second flipping component;

[0014] The base plate conveying equipment includes a first base plate conveying equipment, a second base plate conveying equipment, and hoisting equipment;

[0015] The first bottom plate conveying device has two sets, which are respectively arranged on both sides of the first tilting assembly. The second bottom plate conveying device is arranged on one side of the second tilting assembly. The hoisting device is arranged above the tilting machine.

[0016] As a further improvement to the technical solution, the first tilting assembly includes a first tilting frame, a first trolley, and a first push-pull cylinder;

[0017] The first tilting frame is hinged to the support and has a first slide rail parallel to the tilting direction; the bottom of the first trolley has a first slider that matches the first slide rail and is equipped with a roller and a base plate drive assembly; the first push-pull cylinder is installed on the first tilting frame to control the movement of the first trolley on the first slide rail.

[0018] As a further improvement to the technical solution, the first trolley is equipped with a first base plate clamping assembly.

[0019] As a further improvement to the technical solution, the second tilting assembly includes a second tilting frame, a second trolley, and a second push-pull cylinder;

[0020] The second tilting frame is hinged to the support or the first tilting assembly, and is provided with a second slide rail parallel to the tilting direction; the bottom of the second trolley is provided with a second slider that matches the second slide rail, and is equipped with a roller and a base plate drive assembly; the second push-pull cylinder is installed on the second tilting frame to control the movement of the second trolley on the second slide rail.

[0021] As a further improvement to the technical solution, the second trolley is equipped with a second base plate clamping assembly.

[0022] As a further improvement to the technical solution, a pair of bottom skin clamping mechanisms are symmetrically installed on both sides of the second trolley. The bottom skin clamping mechanism includes a pusher and a clamping plate installed at the end of the pusher.

[0023] As a further improvement to the technical solution, the locking device includes a locking shaft, a locking block, a rotating shaft, and a rotating shaft drive mechanism;

[0024] The rotating shaft is rotatably mounted on the upper side of the first flipping assembly, and the rotating shaft drive mechanism is fixedly mounted on the first flipping assembly and controls the rotation of the rotating shaft;

[0025] The locking shaft is located on the side of the second flip assembly away from the first flip assembly; the locking block is fixedly installed on the end of the rotating shaft facing the second flip assembly, and is an annular part with a notch that matches the locking shaft.

[0026] As a further improvement to the technical solution, the rotary shaft drive mechanism includes a mounting base, a locking telescopic component, and a connecting rod;

[0027] The mounting base is fixedly mounted on the first flipping assembly, the locking telescopic component is fixedly mounted on the mounting base, and the two ends of the connecting rod are respectively hinged to the rotating shaft and the telescopic rod of the locking telescopic component.

[0028] A method for flipping concrete billets, using the aforementioned flipping production line, includes the following steps:

[0029] 1. In the initial state, both the first flipping component and the second flipping component are in a horizontal state. The first bottom plate conveying device transports the bottom plate to the first flipping component and fixes it, and the second bottom plate conveying device transports the bottom plate containing the billet to the second flipping component and fixes it.

[0030] 2. Flip the first flipping component 90°, and then connect the first flipping component and the second flipping component with the locking device;

[0031] Third, the first and second flipping components are flipped 90° simultaneously to achieve a 90° flip of the billet and its transfer to the first flipping component. Then, the locking device is activated to separate the first and second flipping components and flip the second flipping component 90° back to its initial state.

[0032] 4. The first bottom plate conveying equipment removes the bottom plate containing the billet from the first tilting assembly and transports the next bottom plate. At the same time, the hoisting equipment removes the bottom plate from the second tilting assembly, and the second bottom plate conveying equipment transports the next bottom plate containing the billet to the second tilting assembly.

[0033] 5. Repeat steps one through four.

[0034] As a further improvement to the technical solution, the specific working process of the locking device is as follows:

[0035] In step one, the notch of the locking block in the initial state is horizontally oriented towards the second flipping component;

[0036] In step two, after the first flipping component flips 90°, the rotating shaft is controlled to rotate clockwise by 120°~135°.

[0037] In step three, the rotating shaft is controlled to rotate so that the locking block returns to its initial state.

[0038] 3. Beneficial effects

[0039] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0040] (1) The present invention provides a concrete billet turning production line. By improving the structure of the turning machine, the turning components on both sides of the turning machine are controlled to turn by a separate drive mechanism, so that the two can work at the same time. At the same time, in the production line, a separate conveying device is set up to transport the bottom plate to the turning components on both sides of the turning machine. This solves the problem in the existing concrete billet production line that the work on one side of the turning machine must be completed before the work on the other side can be carried out. The work on both sides of the turning machine cannot be carried out synchronously, which affects the production efficiency of concrete block panels.

[0041] (2) The present invention provides a concrete billet turning production line. By setting a unique locking device, the two turning frames can be fixed together when they are perpendicular to each other, thereby ensuring the synchronous turning of the two turning frames in subsequent work and completing the turning and transfer of the billet. In particular, the locking device sets a simple and ingenious locking shaft and locking block, so that the locking process is convenient and quick, without too many complicated operations and complex structures, low cost, and not easy to be damaged. Moreover, it realizes the vertical positioning of the two turning frames at the same time during locking, which effectively improves the working efficiency and working accuracy of the turning machine.

[0042] (3) The present invention provides a concrete billet turning production line. By setting a bottom plate clamping component on the trolley of the turning component, the bottom plate can be clamped and fixed on the trolley when the turning component turns, so as to prevent the bottom plate from falling off and ensure the stable operation of the turning machine.

[0043] (4) The present invention provides a concrete billet turning production line, wherein a slide rail parallel to the turning direction is provided at the bottom of the trolley of the turning component, so that the trolley can adjust the water level position of the turning direction on the turning frame, which facilitates the transportation of the bottom plate and the turning of the billet.

[0044] (5) The present invention provides a concrete billet turning production line, wherein a pair of bottom skin clamping mechanisms are symmetrically installed on both sides of the second trolley, which can clamp the bottom skin of the billet when the second turning component turns over to transfer the billet to the first turning component, thereby improving the bottom skin separation effect of the billet. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of the overall structure of the flipping production line;

[0046] Figure 2 This is a schematic diagram of the overall structure of the tilting machine;

[0047] Figure 3 This is the front view of the first flipped component;

[0048] Figure 4 This is a side view of the first trolley;

[0049] Figure 5 This is the front view of the second flip component;

[0050] Figure 6 This is a side view of the second trolley;

[0051] Figure 7 This is a diagram showing the working state of a tilting machine that can simultaneously load and unload materials.

[0052] Figure 8 This is a side view of the flipping machine;

[0053] Figure 9 for Figure 8 Sectional view along line AA in the middle;

[0054] Figure 10 This is a schematic diagram showing the state of the locking shaft and locking block during the operation of the tilting machine.

[0055] In the diagram: 1. Base; 2. Support; 3. First tilting assembly; 31. First tilting frame; 32. First trolley; 33. First push-pull cylinder; 34. First slide rail; 35. First slider; 36. First base plate clamping assembly; 4. First tilting drive component; 5. Second tilting assembly; 51. Second tilting frame; 52. Second trolley; 53. Second push-pull cylinder; 54. Second slide rail; 55. Second slider; 56. Second base plate clamping assembly; 57. Base plate clamping mechanism; 6. Second tilting drive component; 7. Locking device; 71. Locking shaft; 72. Locking block; 73. Rotating shaft; 74. Mounting seat; 75. Locking telescopic component; 76. Connecting rod; 81. First base plate conveying equipment; 82. Second base plate conveying equipment; 83. Lifting equipment. Detailed Implementation

[0056] Exemplary embodiments of the present invention are described in detail below. While these exemplary embodiments have been described in sufficient detail to enable those skilled in the art to practice the invention, it should be understood that other embodiments may be implemented and various changes may be made to the invention without departing from its spirit and scope. The more detailed description of embodiments of the invention below is not intended to limit the scope of the claimed invention, but is merely illustrative and does not limit the description of the features and characteristics of the invention, in order to suggest the best mode for carrying out the invention and to enable those skilled in the art to practice it. Therefore, the scope of the invention is defined only by the appended claims.

[0057] Example 1

[0058] A concrete billet turning production line, which is part of a concrete block and slab production line, is used to turn over the billets of blocks and slabs to remove the bottom layer and prepare them for subsequent processes. Its specific structure and technical effects are described in detail below.

[0059] like Figure 1 As shown, the flipping production line mainly includes a flipping machine and a bottom plate conveying equipment.

[0060] like Figure 2 As shown, the flipping machine mainly includes a base 1, a support 2, a first flipping component 3, a first flipping drive component 4, a second flipping component 5, a second flipping drive component 6, and a locking device 7.

[0061] In the device of the tilting machine, the base 1 is the mounting base of the tilting machine, which is generally fixedly set on the ground or a platform, and the support 2 is fixedly set on the base 1. In this embodiment, in order to ensure the overall structural strength of the tilting machine, a set of base 1 and support 2 are respectively set at both ends of the tilting machine.

[0062] like Figure 3 and Figure 4 As shown, the first tilting assembly 3 includes a first tilting frame 31, a first trolley 32 and a first push-pull cylinder 33.

[0063] The first tilting frame 31 is hinged to a support 2 at both ends, and the first tilting drive 4 is a hydraulic cylinder set on the base 1 to drive the first tilting assembly 3 to rotate along the hinge point.

[0064] The first tilting frame 31 is provided with a first slide rail 34 parallel to the tilting direction, which is perpendicular to the conveying direction of the base plate and is generally the width direction of the tilting frame. The bottom of the first trolley 32 is provided with a first slider 35 that matches the first slide rail 34, on which rollers and a base plate drive assembly are mounted. In this embodiment, multiple rollers are arranged at intervals along the base plate conveying direction on the upper side of the first trolley 32. The base plate drive assembly uses at least one motor connected to the rollers for transmission, driving the rollers to rotate and thus moving the base plate on the rollers through friction. The cylinder seat of the first push-pull cylinder 33 is mounted on the first tilting frame 31, and its piston rod is hinged to the first trolley 32, controlling the movement of the first trolley 32 on the first slide rail 34. Furthermore, the first trolley 32 is also equipped with a first base plate clamping assembly 36, which can clamp the base plate when the first tilting assembly tilts, preventing the base plate from falling off.

[0065] like Figure 5 and Figure 6 As shown, the second tilting assembly 5 includes a second tilting frame 51, a second trolley 52, and a second push-pull cylinder 53.

[0066] The second tilting frame 51 is hinged to the support 2 or the first tilting assembly 3. In this embodiment, the second tilting frame 51 is installed inside the first tilting frame 31, and its two sides are hinged to the two sides of the first tilting frame 31 respectively. The second tilting drive 6 is a hydraulic cylinder mounted on the base 1, which drives the second tilting assembly 5 to rotate along the hinge point.

[0067] Similar to the arrangement of the first tilting frame 31, the second tilting frame 51 is also equipped with a second slide rail 54 parallel to the tilting direction. The bottom of the second trolley 52 is equipped with a second slider 55 that matches the second slide rail 54. The second trolley 52 is equipped with rollers and a base plate drive assembly. In this embodiment, although the second trolley 52 is also equipped with multiple rollers along the base plate conveying direction, these rollers are unpowered and only serve a supporting function. The base plate drive assembly consists of friction wheels installed between the rollers and a motor connected to the friction wheels. The motor controls the rotation of the friction wheels to move the base plate. The cylinder seat of the second push-pull cylinder 53 is installed on the second tilting frame 51, and its piston rod is hinged to the second trolley 52, controlling the movement of the second trolley 52 on the second slide rail 54. Furthermore, the second trolley 52 is also equipped with a second base plate clamping assembly 56, which has a structure and function basically the same as the second base plate clamping assembly 56.

[0068] It is worth mentioning that the second flipping component 5 is a component that receives the bottom plate containing the billet and flips and transfers the billet to the first flipping component 3, achieving separation of the bottom skin of the billet during the billet flipping process. To meet this requirement, this embodiment symmetrically installs a pair of bottom skin clamping mechanisms 57 on both sides of the second trolley 52. ​​The bottom skin clamping mechanism 57 includes a pusher and a clamping plate installed at the end of the pusher. The pusher can be any one of a cylinder, a hydraulic cylinder, or an electric push rod, so that when flipping the billet, it can clamp the bottom skin of the billet, so that the bottom skin stays on the second flipping component 5, while the billet is transferred to the first flipping component 3. In this way, the bottom skin removal effect is improved.

[0069] In this embodiment, the first base plate clamping assembly 36 and the second base plate clamping assembly 56 are prior art in the field, so they will not be described in detail. For details, please refer to the patent document with patent application number CN202110707223.1 and title: A mechanism for conveniently fixing and clamping the base plate of an aerated concrete turning table.

[0070] like Figure 8 and Figure 9 As shown, the locking device 7 includes a locking shaft 71, a locking block 72, a rotating shaft 73, and a rotating shaft drive mechanism.

[0071] The rotating shaft 73 is rotatably mounted on the upper side of the first tilting assembly 3, and the rotating shaft drive mechanism is fixedly mounted on the first tilting assembly 3 and controls the rotation of the rotating shaft 73. The rotating shaft drive mechanism includes a mounting base 74, a locking telescopic member 75, and a connecting rod 76. The mounting base 74 is fixedly disposed on the first tilting assembly 3, the locking telescopic member 75 is fixedly mounted on the mounting base 74, and the two ends of the connecting rod 76 are respectively hinged to the telescopic rods of the rotating shaft 73 and the locking telescopic member 75. In this embodiment, the locking telescopic member 75 is any one of a hydraulic cylinder, a pneumatic cylinder, or an electric push rod. The extension and retraction of the telescopic rod causes the connecting rod 76 to drive the rotating shaft 73 to rotate.

[0072] A locking shaft 71 is disposed on the side of the second flip assembly 5 away from the first flip assembly 3. A locking block 72, which is a ring-shaped component, is fixedly installed on the end of the rotating shaft 73 facing the second flip assembly 3 and has a notch that matches the locking shaft 71. After the locking shaft 71 is engaged in the notch of the locking block 72, the two are locked together by rotating the rotating shaft 73, thereby connecting the first flip assembly 3 and the second flip assembly 5.

[0073] The base plate conveying equipment includes a first base plate conveying equipment 81, a second base plate conveying equipment 82, and a hoisting equipment 83.

[0074] The first bottom plate conveying device 81 has two sets, respectively arranged on both sides of the first tilting assembly 3. The second bottom plate conveying device is arranged on one side of the second tilting assembly 5. The hoisting device 83 is arranged above the tilting machine. In this embodiment, the bottom plate conveying device is a roller conveyor, and the hoisting device is a crane. The specific structure and working principle are prior art known to those skilled in the art, and therefore will not be described in detail.

[0075] This flipping production line improves the structure of the flipping machine by controlling the flipping components on both sides of the machine through separate drive mechanisms, enabling them to work simultaneously. Additionally, separate conveying devices are installed at the corresponding positions on both sides of the flipping machine to transport the base plates to these components. This solves the problem in existing concrete billet production lines where the loading and unloading of one side of the flipping machine must be completed before the other side can begin work, resulting in asynchronous operations on both sides and impacting the production efficiency of concrete block slabs.

[0076] To better understand the working principle and technical effects of the flipping production line in this embodiment, the following description of the flipping method of the flipping production line is provided, specifically including the following steps:

[0077] 1. In the initial state, both the first flipping component 3 and the second flipping component 5 are in a horizontal state. At this time, as follows: Figure 10As shown in state a, the notch of the locking block 72 is horizontally oriented towards the second flipping assembly 6. Then, the first base plate conveying device 81 transports and fixes the base plate to the first flipping assembly 3, and the second base plate conveying device 82 transports and fixes the base plate containing the blank to the second flipping assembly 5.

[0078] 2. Rotate the first flipping component 3 90°. At this time, the locking block 72 engages with the locking shaft 71, as follows: Figure 10 As shown in state b. Then control the rotating shaft 73 to rotate clockwise 120°~135°, so that the locking block 72 and the locking shaft 71 are in the same state. Figure 9 As shown in state c. In this state, when the first flipping component 3 and the second flipping component 5 are flipped, the locking shaft 71 and the locking block 72 will block each other in the flipping direction, thereby ensuring the synchronous flipping effect of the first flipping component 3 and the second flipping component 5, and realizing the locking and fixing between the first flipping component 3 and the second flipping component 5.

[0079] Third, simultaneously rotate the first flipping assembly 3 and the second flipping assembly 5 by 90°, so that the locking block 72 and the locking shaft 71 are in the following states: Figure 10 As shown in state d, the billet is flipped 90° and transferred to the first flipping assembly 3. Then, as... Figure 10 As shown in state e, the locking block 72 is rotated to its initial horizontal position facing the second flipping component 5, separating the first flipping component 3 and the second flipping component 5, and finally the second flipping component 5 is flipped 90° to return to its initial state.

[0080] Fourth, the first bottom plate conveying device 81 removes the bottom plate containing the billet from the first tilting assembly 3 and transports the next bottom plate. Simultaneously, the hoisting device removes the bottom plate from the second tilting assembly 3, and the second bottom plate conveying device 82 transports the next bottom plate containing the billet to the second tilting assembly 3, i.e. Figure 7 The machine, as shown, performs simultaneous loading and unloading operations on both sides.

[0081] 5. Repeat steps one through four.

[0082] It must be noted that in this embodiment, the structural arrangement for separately controlling the two flipping components is not difficult. The difficulty lies in how to ensure the synchronous rotation of the first flipping component 3 and the second flipping component 5 when flipping the blank, and how to ensure the locking device 7 can guarantee the locking accuracy and strength while keeping the structure and operation as simple as possible, reducing costs and locking time, and ensuring flipping efficiency.

[0083] In this embodiment, the locking device 7 only requires setting the installation positions of the locking shaft 71 and the locking block 72 so that when the first flipping component 3 is exactly perpendicular to the second flipping component 5, the locking shaft 71 can engage with the locking block 72, thus quickly achieving the locking and positioning of the first flipping component 3 and the second flipping component 5. At this time, simply rotating the locking block 72 is sufficient to quickly complete the locking process. The entire locking process is not only convenient and quick, effectively improving the working efficiency of the flipping machine, but also has a simple structure, is not easily damaged, has low manufacturing cost, and good stability. At the same time, it can simultaneously achieve locking and positioning, resulting in excellent application effects.

[0084] In summary, the concrete billet turning production line and its turning method of this embodiment, by improving the structure of the turning machine and cooperating with the corresponding turning method, can simultaneously carry out loading and unloading operations on both sides of the turning machine, effectively improving the production efficiency of concrete block panels.

[0085] The examples described herein are merely preferred embodiments of the invention and are not intended to limit the concept and scope of the invention. Any modifications and improvements made by those skilled in the art to the technical solutions of the invention without departing from the design concept of the invention should fall within the protection scope of the invention.

Claims

1. A concrete green concrete green body inversion line characterized by: The invention relates to a turnover machine and a bottom plate conveying device. The turnover machine comprises a base (1), a first turnover assembly (3), a first turnover driving element (4), a second turnover assembly (5), a second turnover driving element (6) and a locking device (7). The base (1) is provided with a support (2); the first turnover assembly (3) is hingedly connected to the support (2), and the first turnover driving element (4) is arranged on the base (1) and drives the first turnover assembly (3) to rotate; the second turnover assembly (5) is hingedly connected to the support (2) or the first turnover assembly (3), and the second turnover driving element (6) is arranged on the base (1) and drives the second turnover assembly (5) to rotate. When the first turnover assembly (3) and the second turnover assembly (5) intersect at 90°, the first turnover assembly (3) and the second turnover assembly (5) are connected. The bottom plate conveying device comprises a first bottom plate conveying device (81), a second bottom plate conveying device (82) and a hoisting device (83). The first bottom plate conveying device (81) has two groups, which are arranged on the two sides of the first turnover assembly (3), respectively; the second bottom plate conveying device is arranged on one side of the second turnover assembly (5); and the hoisting device (83) is arranged above the turnover machine. The locking device (7) comprises a locking shaft (71), a locking block (72), a rotating shaft (73) and a rotating shaft driving mechanism. The rotating shaft (73) is rotatably installed on the upper side of the first turnover assembly (3), and the rotating shaft driving mechanism is fixedly installed on the first turnover assembly (3) and controls the rotation of the rotating shaft (73). The locking shaft (71) is arranged on the side of the second turnover assembly (5) away from the first turnover assembly (3); and the locking block (72) is fixedly installed on the end of the rotating shaft (73) facing the second turnover assembly (3) and is an annular member, which has a notch matched with the locking shaft (71).

2. A concrete green concrete body inversion line according to claim 1, characterized in that: The first turnover assembly (3) comprises a first turnover frame (31), a first trolley (32) and a first push-pull oil cylinder (33). The first turnover frame (31) is hingedly connected to the support (2) and is provided with a first sliding rail (34) parallel to the turnover direction; the first trolley (32) is provided with a first sliding block (35) matched with the first sliding rail (34) at the bottom, and is provided with a roller and a bottom plate driving assembly; and the first push-pull oil cylinder (33) is installed on the first turnover frame (31) and controls the movement of the first trolley (32) on the first sliding rail (34).

3. A concrete green concrete green body inversion line according to claim 2, characterized in that: The first trolley (32) is provided with a first bottom plate clamping assembly (36).

4. A concrete green concrete body inversion line according to claim 1, wherein: The second turnover assembly (5) comprises a second turnover frame (51), a second trolley (52) and a second push-pull oil cylinder (53). The second turnover frame (51) is hingedly connected with the support (2) or the first turnover assembly (3), and a second sliding rail (54) parallel to the turnover direction is arranged on the second turnover frame (51); the second trolley (52) is provided with a second sliding block (55) matched with the second sliding rail (54) at the bottom, and a carrier roller and a bottom plate driving assembly are arranged on the second trolley (52); and the second push-pull oil cylinder (53) is installed on the second turnover frame (51) and controls the movement of the second trolley (52) on the second sliding rail (54).

5. A concrete green concrete green body inversion line according to claim 4, characterized in that: The second trolley (52) is provided with a second bottom plate clamping assembly (56).

6. A concrete green concrete body inversion line according to claim 5, characterised in that: A pair of bottom skin clamping mechanisms (57) are symmetrically arranged on the two sides of the second trolley (52), and each bottom skin clamping mechanism (57) comprises a pushing piece and a clamping plate arranged at the end of the pushing piece.

7. A concrete green concrete body inversion line according to any one of claims 1-6, characterized in that: The rotating shaft driving mechanism comprises a mounting seat (74), a locking telescopic piece (75) and a connecting rod (76); The mounting seat (74) is fixedly arranged on the first turnover assembly (3), the locking telescopic piece (75) is fixedly arranged on the mounting seat (74), and the two ends of the connecting rod (76) are hingedly connected with the rotating shaft (73) and the telescopic rod of the locking telescopic piece (75) respectively.

8. A method for turning over a concrete blank, using a turning over line according to any one of claims 1 to 7, characterized in that: The method comprises the following steps: In the initial state, the first turnover assembly (3) and the second turnover assembly (5) are both in a horizontal state, the first bottom plate conveying device (81) conveys a bottom plate to the first turnover assembly (3) and fixes the bottom plate, and the second bottom plate conveying device (82) conveys a bottom plate provided with a blank to the second turnover assembly (5) and fixes the bottom plate; In the second step, the first turnover assembly (3) is turned over by 90°, and then the locking device (7) connects the first turnover assembly (3) and the second turnover assembly (5); In the third step, the first turnover assembly (3) and the second turnover assembly (5) are simultaneously turned over by 90°, so that the blank is turned over by 90° and transferred to the first turnover assembly (3), then the locking device (7) works to separate the first turnover assembly (3) and the second turnover assembly (5), and the second turnover assembly (5) is turned over by 90° to the initial state; In the fourth step, the first bottom plate conveying device (81) removes the bottom plate provided with the blank on the first turnover assembly (3) and conveys the next bottom plate, at the same time, the hoisting device (83) removes the bottom plate on the second turnover assembly (3), and the second bottom plate conveying device (81) conveys the next bottom plate provided with the blank to the second turnover assembly (3); In the fifth step, the first to fourth steps are repeated.

9. A method of turning over a concrete blank according to claim 8, characterized in that: The specific working process of the locking device (7) is as follows: In the first step, the notch of the locking block (72) in the initial state is horizontally directed to the second turnover assembly (6); In the second step, after the first turnover assembly (3) is turned over by 90°, the rotating shaft (73) is controlled to rotate by 120°-135° clockwise; In the third step, the rotating shaft (73) is controlled to rotate so that the locking block (72) returns to the initial state.

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