A concrete placing device

Abstract

The present invention relates to a concrete placing device, which includes a support base, and a weighing sensor is provided on the support base; a placing hopper for containing concrete mixture is supported on the weighing sensor, and the placing hopper can rotate around a horizontal axis. The weighing sensor is used to weigh the placing hopper and the concrete mixture in the placing hopper. An outlet is provided on one side of the placing hopper in the rotation direction; the placing device further includes a placing hopper driving mechanism, and the placing hopper driving mechanism is used to drive the placing hopper to rotate so as to pour the concrete mixture out through the outlet into a concrete test mold; the placing device further includes a controller connected to the placing hopper driving mechanism, and the controller responds to the data of the weighing sensor to start the placing hopper driving mechanism, so as to drive the placing hopper to rotate downward toward the side where the outlet is located during placing.

Description

Technical Field

[0001] The present invention relates to the technical field of making concrete test blocks, and particularly to a concrete placing device. Background Art

[0002] The forming process of concrete test blocks generally includes batching, mixing, placing, forming, hardening and curing, etc. Among them, placing means pouring the uniformly mixed concrete mixture into a concrete test mold.

[0003] In the prior art, a placing hopper is usually used for placing. For example, the utility model patent with the authorization publication number of CN204450830U discloses a placing hopper convenient for controlling the discharge amount, which includes a placing hopper body. A discharge port is opened at the bottom of the placing hopper body, and two baffle plates are rotatably installed at the discharge port. Gears are respectively installed on the rotating shafts of the two baffle plates, and the gears of the two baffle plates are meshed with each other. To drive the baffle plates to rotate, a linear motor is installed on the placing hopper body, and the linear motor is connected to one of the baffle plates, and the baffle plate is driven to rotate by the linear motor. When in use, the discharge amount is controlled by adjusting the opening and closing area of the two baffle plates.

[0004] Although in the prior art, the opening and closing area of the two baffle plates is continuously adjusted by a linear motor to control the discharge amount. However, since the placing hopper in the prior art cannot real-time monitor the remaining amount of material in the placing hopper and cannot accurately adjust the opening and closing area of the two baffle plates according to the remaining amount of material, the control accuracy of the discharge amount is relatively low. Moreover, in the prior art, when the material falls, it will impact the baffle plate, which easily causes the baffle plate to shake, resulting in a change in the opening and closing area, so that there is a difference between the actual discharge amount of the placing hopper and the set discharge amount, which will also lead to a relatively low control accuracy of the discharge amount. Summary of the Invention

[0005] The present invention provides a concrete placing device to solve the technical problem of relatively low control accuracy of the discharge amount of the placing hopper in the prior art.

[0006] To solve the above problems, the concrete placing device provided by the present invention adopts the following technical solutions: A concrete placing device, comprising:

[0007] A support base provided with a weighing sensor;

[0008] A placing hopper for containing the concrete mixture, supported on the weighing sensor, and the placing hopper can rotate around a horizontal axis. The weighing sensor is used to weigh the placing hopper and the concrete mixture in the placing hopper. An outlet is provided on one side of the placing hopper in the rotation direction;

[0009] A placing hopper driving mechanism for driving the placing hopper to rotate to pour the concrete mixture out through the outlet into a concrete test mold;

[0010] A controller, connected to the cloth hopper driving mechanism, the controller responds to the data of the weighing sensor to start the cloth hopper driving mechanism, so as to drive the cloth hopper to rotate downward towards the side where the discharge port is located during cloth feeding.

[0011] The beneficial effects are as follows: As the concrete mixture continuously flows out of the discharge port, the weight of the cloth hopper and the concrete mixture in the cloth hopper continuously decreases. The weighing sensor can weigh the cloth hopper and the concrete mixture in the cloth hopper in real time. The controller can control the start of the cloth hopper driving mechanism according to the real-time weighing data, so that the cloth hopper rotates downward towards the side where the discharge port is located, placing the discharge port at a lower position, ensuring that the discharge amount of the cloth hopper per unit time is a set constant value, improving the control accuracy of the discharge amount, and the landing point of the concrete mixture can also be ensured to be consistent. In the present invention, the discharge port is arranged on the side of the cloth hopper. Compared with the prior art in which the discharge port is arranged at the bottom and a baffle is used to block the material, the concrete mixture will not impact structures such as the baffle during cloth feeding, avoiding the situation where the opening and closing area is inaccurate due to the shaking of the baffle; when cloth feeding stops, only the cloth hopper needs to be rotated, which is convenient to operate.

[0012] As a further improvement, the discharge port is a circumferentially closed discharge hole, and the cloth feeding device further includes a cover plate movably assembled on the cloth hopper, and the cover plate is used to close and open the discharge hole. When adding materials to the cloth hopper, the discharge hole is closed by the cover plate, which can prevent the concrete mixture from leaking through the discharge hole during material addition.

[0013] As a further improvement, the cover plate is hinged to the cloth hopper, and a cylinder is also hinged to the cloth hopper. The cylinder is hinged and assembled with the cover plate, and the cylinder is used to drive the cloth hopper to rotate.

[0014] As a further improvement, a discharge circular tube is fixed at the discharge hole, and a feed port is provided at the top of the cloth hopper;

[0015] The discharge circular tube has a first end connected to the cloth hopper and a second end facing away from the cloth hopper. The discharge circular tube extends from the first end to the second end and is inclined towards the direction where the feed port is located. The purpose of this setting is to prevent the concrete mixture from leaking when injecting the concrete mixture into the cloth hopper, and it can also increase the single-time storage capacity of the cloth hopper.

[0016] As a further improvement, two weighing sensors are arranged, and the interval direction of the two weighing sensors is consistent with the extending direction of the rotation axis of the cloth hopper;

[0017] A bearing block is provided on each load cell. Both ends of the cloth hopper are fixedly provided with support shafts. The two support shafts are coaxially arranged, and the support shafts are inserted into the bearing blocks on the corresponding sides. Through the cooperation of the two support shafts and the corresponding bearing blocks, the support of the cloth hopper is more stable.

[0018] As a further improvement, the cloth feeding device further includes a scraping structure for scraping the remaining concrete mixture in the cloth hopper. The scraping structure includes a scraping plate rotating shaft penetrating through the cloth hopper and the support shaft. A scraping plate for scraping the remaining concrete mixture is installed on the scraping plate rotating shaft. A scraping driving mechanism for driving the scraping plate rotating shaft to rotate is further provided on the support seat.

[0019] As a further improvement, a scraping driving mechanism protective cover is provided on the support seat, and the scraping driving mechanism protective cover is used to cover the scraping driving mechanism inside.

[0020] As a further improvement, the cloth hopper driving mechanism includes a motor fixedly provided on the support seat and a first gear connected to the motor. A second gear is fixedly provided on the cloth hopper. The first gear and the second gear mesh with each other, and the diameter of the first gear is smaller than that of the second gear. Through the transmission of the first gear and the second gear, speed reduction torque can be achieved, which is convenient for controlling the rotation accuracy of the cloth hopper and meets the requirement of the rotation torque of the cloth hopper.

[0021] As a further improvement, a cloth hopper driving mechanism protective cover is provided on the support seat, and the cloth hopper driving mechanism protective cover is used to cover the cloth hopper driving mechanism inside.

[0022] As a further improvement, the cloth feeding device includes a frame and two guide rails provided on the frame. The support seat includes two support units corresponding to the two guide rails one by one. A walking wheel is provided on each support unit, and the walking wheel is slidably supported on the guide rail. Description of the Drawings

[0023] By referring to the accompanying drawings and reading the following detailed description, the above and other objects, features and advantages of the exemplary embodiments of the present invention will become easily understandable. In the drawings, several embodiments of the present invention are shown in an exemplary rather than restrictive manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0024] Figure 1 is a structural schematic diagram of a concrete cloth feeding device;

[0025] Figure 2 is a structural schematic diagram of the concrete cloth feeding device after removing the cloth hopper driving mechanism protective cover and the scraping driving mechanism protective cover;

[0026] Figure 3 is a partial enlarged view of the frame and the guide rail in the cloth feeding device;

[0027] Figure 4 It is a partial enlarged view of the first perspective at the hopper drive mechanism in the fabricating equipment;

[0028] Figure 5 It is a partial enlarged view of the second perspective at the hopper drive mechanism in the fabricating equipment (one of the traveling wheels is removed);

[0029] Figure 6 It is a partial enlarged view at the scraping structure in the fabricating equipment;

[0030] Figure 7 It is a partial enlarged view at the scraping drive mechanism in the fabricating equipment;

[0031] Figure 8 It is a partial enlarged view at the second motor mounting plate in the fabricating equipment;

[0032] Figure 9 It is a partial enlarged view at the discharge port in the fabricating equipment;

[0033] Figure 10 It is a top view of the fabricating equipment;

[0034] Figure 11 For Figure 10 The sectional view of the A-A section in (the components of the traveling drive mechanism are removed);

[0035] Figure 12 It is a schematic structural view of the hopper in the fabricating equipment.

[0036] Explanation of reference numerals:

[0037] 1. Frame; 2. Guide rail; 3. L-shaped support plate; 4. Traveling wheel mounting shaft; 5. Traveling wheel; 6. Connecting beam; 7. Sensor mounting plate; 8. Load cell; 9. Hopper; 10. Guide rail protective cover; 11. Support shaft; 12. Sealing plate; 13. Bearing seat mounting plate; 14. Bearing seat; 15. Discharge port; 16. Cover plate; 17. Discharge port rib plate; 18. Ear plate; 19. Pin shaft; 20. Cylinder; 21. Cylinder protective cover; 22. First motor; 23. First reducer; 24. First gear; 25. Second gear; 26. Hopper drive mechanism protective cover; 27. Scraping structure; 28. Scraper rotating shaft; 29. Scraper vertical shaft; 30. Scraper; 31. Second motor mounting plate; 32. Second motor; 33. Second reducer; 34. Third gear; 35. Fourth gear; 36. Scraping drive mechanism protective cover; 37. Concrete test mold; 38. Long slot; 39. First vertical side; 40. First horizontal side; 41. Second vertical side; 42. Second horizontal side; 43. Discharge round pipe; 44. First end; 45. Second end. Detailed implementation manners

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present invention.

[0039] In the concrete placing equipment of the present invention, the placing hopper is rotatably assembled on the support seat, and a discharge port is provided on the side of the placing hopper. By rotating the placing hopper, the discharge amount of the discharge port can be controlled. During the placing process, the total weight of the placing hopper and the concrete mixture in the placing hopper is monitored in real time, and the rotation angle of the placing hopper is adjusted in real time according to the detected total weight to ensure that the landing points of the concrete mixture are consistent and the discharge speed is constant, thereby accurately controlling the discharge amount.

[0040] After introducing the basic principle of the present invention, the following specifically introduces various non-limiting implementation manners of the present invention. The number of any element in the drawings is for illustration rather than limitation, and any naming is only for distinction and does not have any limiting meaning.

[0041] The following refers to several representative implementation manners of the present invention to elaborate in detail the principle and spirit of the present invention.

[0042] Embodiment 1 of the concrete placing equipment provided by the present invention:

[0043] As Figures 1 to 12 shown, the concrete placing equipment (hereinafter simply referred to as the placing equipment) includes a frame 1 and two guide rails 2 fixedly installed on the frame 1, and the two guide rails 2 are parallel to each other. For convenience of description, in this embodiment, it is defined that in the horizontal plane, the guide rail 2 extends in the left-right direction, and the interval direction of the two guide rails 2 is the front-back direction.

[0044] The placing equipment includes a support seat slidably assembled on the two guide rails 2. The support seat includes two support units, and the two support units correspond to the two guide rails 2 one by one. Specifically, the support unit includes an L-shaped support plate 3, and the L-shaped support plate 3 extends in the left-right direction. As Figure 5 shown, the L-shaped support plate 3 includes a first vertical side 39 and a first horizontal side 40 that are perpendicular to each other. The placing equipment includes a walking wheel mounting shaft 4, and the walking wheel mounting shaft 4 extends in the front-back direction. The walking wheel mounting shaft 4 penetrates through the first vertical sides 39 of the L-shaped support plates 3 in the two support units at the same time. A walking wheel 5 is rotatably installed on the walking wheel mounting shaft 4, and the walking wheel 5 is supported on the guide rail 2 and can travel on the guide rail 2. A connecting beam 6 is provided between the L-shaped support plates 3 of the two support units, and the connecting beam 6 connects the first vertical sides 39 of the two L-shaped support plates 3, so that the two support units can form a whole and travel together in the left-right direction.

[0045] The first horizontal side 40 of the L-shaped support plate 3 is located directly above the traveling wheel 5. The support unit further includes a sensor mounting plate 7, which is fixedly mounted on the first horizontal side 40 of the L-shaped support plate 3, and a weighing sensor 8 is fixedly mounted on the sensor mounting plate 7.

[0046] The concrete placing equipment further includes a placing hopper 9. Both ends of the placing hopper 9 are supported on the weighing sensor 8, and the weighing sensor 8 can weigh the placing hopper 9 and the concrete mixture therein. A traveling driving mechanism capable of driving the placing hopper 9 to move left and right is also mounted on the frame. Among them, the traveling driving mechanism is a prior art, such as a sprocket and chain mechanism, etc., which will not be elaborated here.

[0047] In order to prevent the concrete mixture in the placing hopper 9 from falling on the guide rail, causing the traveling wheel 5 to jam, a guide rail protective cover 10 is fixedly mounted above the guide rail 2. In the vertical direction, there is a long hole 38 between the guide rail protective cover 10 and the guide rail 2, and the traveling wheel mounting shaft 4 passes through the long hole 38 in the front-rear direction.

[0048] The placing hopper 9 is a cylindrical structure with closed front and rear ends and an open top. The open top is a feeding port for receiving the uniformly stirred concrete mixture, and a sealing plate 12 is fixed at the open top of the placing hopper 9. Support shafts 11 are respectively fixed at the front and rear ends of the placing hopper 9. Among them, the support shafts 11 are fixed outside the front and rear ends of the placing hopper 9, and the support shafts 11 are hollow shafts, and the two support shafts 11 are coaxially arranged.

[0049] A bearing seat mounting plate 13 is fixedly mounted on each weighing sensor 8, and a bearing seat 14 is fixedly mounted on the bearing seat mounting plate 13. The bearing seats 14 correspond to the support shafts 11 one by one. The support shafts 11 pass through the bearing seats 14 and are supported on the bearing seats 14, so that the placing hopper 9 can rotate around the central axis of the support shafts 11.

[0050] As Figure 1 shown, three discharge ports 15 are provided on the side of the placing hopper 9. The three discharge ports 15 are evenly distributed on the placing hopper 9 in the front-rear direction. Among them, the discharge port 15 is a discharge hole, and the discharge port 15 is at a certain distance from the top surface of the placing hopper 9. The discharge port 15 is a hole-shaped structure with closed surroundings. When the placing hopper 9 rotates downward toward the side where the discharge port 15 is located, the concrete mixture in the placing hopper 9 can be discharged through the discharge port 15 and fall into the lower concrete test mold 37.

[0051] In order to close and open the discharge port 15, a discharge circular tube 43 is installed on each discharge port 15, and each discharge port 15 corresponds to a cover plate 16. Specifically, a discharge port rib plate 17 is fixedly installed on the cover plate 16, and two ear plates 18 are installed on the distribution hopper 9 corresponding to each discharge port rib plate 17. The discharge port rib plate 17 is hinged between the two ear plates 18 through a pin shaft 19. The reciprocating swing of the discharge port rib plate 17 can drive the cover plate 16 to close the discharge circular tube 43, and the cover plate 16 can also open the discharge circular tube 43.

[0052] In order to drive the discharge port rib plate 17 to reciprocate, a cylinder 20 is hinged on the material distribution hopper 9. The cylinder 20 includes a cylinder body and a piston rod. The cylinder body is hinged on the material distribution hopper 9, and the piston rod is hinged on the discharge port rib plate 17. The discharge port rib plate 17 can be driven to reciprocate by the extension and contraction of the cylinder 20. In order to protect the cylinder 20 and prevent the concrete mixture from falling on the cylinder 20, as shown in FIG. Figure 9 As shown, a cylinder protective cover 21 is fixedly installed on the material distribution hopper 9, and the cylinder protective cover 21 covers the cylinder 20 and part of the discharge port rib plate 17 inside. The bottom of the cylinder protective cover 21 is open to allow the discharge port rib plate 17 to pass downward.

[0053] like Figure 12 As shown, the material distribution hopper 9 is a cylinder as a whole, and a part of the top is cut off to form a feed inlet at the top of the material distribution hopper 9. The end of the discharge circular tube 43 connected to the material distribution hopper 9 is the first end 44, and the end away from the material distribution hopper 9 is the second end 45. The intersection point of the central axis of the discharge circular tube 43 and the outer peripheral surface of the material distribution hopper 9 is B, and the diameter line passing through point B in the material distribution hopper 9 forms an angle C with the discharge circular tube 43. The discharge circular tube 43 extends from the first end 44 to the second end 45 and is inclined in the direction of the feed inlet.

[0054] The advantage of this arrangement is that when the feed port of the distribution hopper 9 is arranged upward, the discharge circular pipe 43 is inclined upward, and when the concrete mixture is injected into the distribution hopper 9, when the concrete mixture reaches the height of point D, the concrete mixture will not leak out, and can only leak out when the concrete mixture reaches the height of point E. Compared with the method in which the central axis of the discharge circular pipe 43 passes through the central axis of the distribution hopper 9, the arrangement of the present invention can inject more concrete mixture into the distribution hopper 9.

[0055] To drive the material distributing hopper 9 to rotate, as Figure 2 , Figure 4 and Figure 5As shown in the figure, a hopper driving mechanism is fixedly installed on one of the sensor mounting plates 7 in the front-back direction. The hopper driving mechanism includes a first motor 22 mounted on the sensor mounting plate 7. A first speed reducer 23 is mounted on the output end of the first motor 22, and a first gear 24 is mounted on the output end of the first speed reducer 23. A second gear 25 is fixed to the outside of one end of the hopper 9, and the diameter of the second gear 25 is larger than that of the first gear 24. Among them, the axis of the output shaft of the first motor 22 is perpendicular to the axis of the first gear 24, and the first speed reducer 23 realizes commutation. The first motor 22 drives the hopper 9 to rotate through the first speed reducer 23, the first gear 24, and the second gear 25, and realizes speed reduction and torque increase through the first speed reducer 23, the first gear 24, and the second gear 25. In this embodiment, in order to protect the first motor 22, the first speed reducer 23, the first gear 24, and the second gear 25, a hopper driving mechanism protective cover 26 is mounted on the guide rail protective cover 10 on the side where the first motor 22 is located.

[0056] As Figure 2 , Figure 6 shown, a scraping structure 27 is also rotatably installed in the hopper 9. The function of the scraping structure 27 is to scrape out the remaining concrete mixture. The scraping structure 27 specifically includes a scraper rotating shaft 28 rotatably installed on the hopper body. As Figure 4 shown, both ends of the scraper rotating shaft 28 pass through the hollow support shaft 11. Three scraper vertical shafts 29 are fixedly installed on the scraper rotating shaft 28. The three scraper vertical shafts 29 are arranged at intervals in the front-back direction. The scraper vertical shafts 29 extend radially, and a scraper 30 is fixed between two adjacent scraper vertical shafts 29. Among them, the scraper 30 is of a V-shaped structure and contacts the inner wall of the hopper 9.

[0057] To drive the scraper rotating shaft 28 to rotate, as Figure 2 and Figure 7 shown, a scraping driving mechanism is fixedly installed on the other sensor mounting plate 7 in the front-back direction. The scraping driving mechanism includes a second motor mounting plate 31 fixed to the sensor mounting plate 7. The second motor mounting plate 31 is an L-shaped plate. The second motor mounting plate 31 includes a second vertical side 41 and a second horizontal side 42. The second horizontal side 42 is fixed to the sensor mounting plate 7, and a second motor 32 is fixedly installed on the second vertical side 41 of the second motor mounting plate 31. A second speed reducer 33 is mounted on the output end of the second motor 32, and a third gear 34 is mounted on the output shaft of the second speed reducer 33. One end of the scraper rotating shaft 28 passes out of the support shaft 11, and a fourth gear 35 is fixedly installed on this end. The third gear 34 and the fourth gear 35 mesh with each other. The second motor 32 drives the scraper rotating shaft 28 to rotate, so as to scrape out the remaining concrete mixture. Similar to the first speed reducer 23, the second speed reducer 33 also realizes commutation transmission.

[0058] To protect the second motor 32, the second speed reducer 33, the third gear 34, and the fourth gear 35, a scraping drive mechanism protective cover 36 is installed on the guide rail protective cover 10 on the side where the second motor 32 is located, covering the second motor 32, the second speed reducer 33, the third gear 34, and the fourth gear 35 inside.

[0059] The concrete placing equipment further includes a controller, which is connected to the first motor 22 and can control the start and stop of the first motor 22, thereby driving the placing hopper 9 to rotate. At the same time, the controller can collect the values of the weighing sensor 8. As the concrete mixture continuously flows out of the discharge port 15, the weight of the placing hopper 9 and the concrete mixture inside the placing hopper 9 will gradually decrease. To ensure that the landing point of the concrete mixture flowing out of the discharge port 15 is consistent and the discharge amount per unit time is the set amount, it is necessary to drive the placing hopper 9 to rotate downward toward the side where the discharge port 15 is located, placing the discharge port 15 at a lower position. The controller determines the angle by which the placing hopper 9 needs to rotate based on the value of the weighing sensor 8 and drives the placing hopper 9 to rotate through the first motor 22.

[0060] During use, the concrete test mold 37 is placed under the guide rail 2, and the traveling drive mechanism moves the placing hopper 9 left and right. During the movement, the first motor 22 drives the placing hopper 9 to rotate to place concrete into the concrete test mold 37. During the placing process, the weighing sensor 8 monitors the total weight of the placing hopper 9 and the concrete mixture inside the placing hopper 9 in real time. As the amount of the remaining concrete mixture in the placing hopper 9 gradually decreases, the controller will control the first motor 22 to start and drive the placing hopper 9 to rotate, thereby ensuring that the landing point of the concrete mixture is consistent and the discharge amount is the set amount.

[0061] It should be noted that during actual use, the weighing sensor 8 will weigh all the objects supported on it, but only the weight of the concrete mixture will change during actual use. Therefore, the change value of the weighing data of the weighing sensor 8 is the discharge amount of the concrete mixture.

[0062] Embodiment 2 of the concrete placing equipment provided by the present invention:

[0063] The difference from Embodiment 1 is that in Embodiment 1, the support seat is slidably assembled on the guide rail, the concrete test mold is fixed, and the placing hopper rotates while traveling for placing.

[0064] In this embodiment, the support seat is fixed. To place multiple concrete test molds, the concrete test mold can be driven to move; the support seat at this time can be a whole plate. Or, in other embodiments, if there is only one row of concrete test molds, the concrete test mold can also remain stationary.

[0065] Embodiment 3 of the concrete placing equipment provided by the present invention:

[0066] The difference between this embodiment and Embodiment 1 is that in Embodiment 1, the hopper driving mechanism includes a motor and a first gear and a second gear that mesh with each other.

[0067] In this embodiment, the form of the hopper driving mechanism can be changed. For example, it includes a motor and a belt driving mechanism. The belt driving mechanism includes a first pulley fixed on the motor and a second pulley fixed on the hopper, and the belt driving mechanism further includes a belt wound around the outside of the first pulley and the second pulley. Alternatively, in other embodiments, the hopper driving mechanism may only include a motor, and the motor is directly connected to one end of the hopper for direct drive.

[0068] Embodiment 4 of the concrete placing equipment provided by the present invention:

[0069] The difference between this embodiment and Embodiment 1 is that in Embodiment 1, the discharge port is a discharge hole, and a cover plate is installed at the discharge hole. The cover plate is rotatably installed on the hopper, and the rotation of the cover plate is driven by the telescopic movement of a cylinder.

[0070] In this embodiment, by adding a guide rail outside the hopper, the cover plate is slidably assembled on the guide rail, and the cover plate is driven to reciprocate by a cylinder.

[0071] In other embodiments, there is a feed port at the top of the hopper, and the discharge port is a discharge groove provided at the top of the hopper.

[0072] Embodiment 5 of the concrete placing equipment provided by the present invention:

[0073] The difference between this embodiment and Embodiment 1 is that in Embodiment 1, there are two weighing sensors. Bearing seats are provided on both weighing sensors, and a support shaft is inserted through each bearing seat, and the hopper is fixed on the two support shafts.

[0074] In this embodiment, there is only one weighing sensor. A semi-cylindrical barrel is fixed on the weighing sensor. The two ends and one side of the semi-cylindrical barrel have openings, and the middle position of the hopper is rotatably assembled in the semi-cylindrical barrel, and the hopper is driven to rotate by the hopper driving mechanism.

[0075] In addition, in the description of this specification, the meaning of "a plurality of" is at least two, such as two, three or more, etc., unless otherwise specifically defined.

Claims

1. A concrete placing device, characterized in that, it includes: a support base provided with a weighing sensor (8); a placing hopper (9) for containing concrete mixture, supported on the weighing sensor (8), and the placing hopper (9) can rotate around a horizontal axis. The weighing sensor (8) is used to weigh the placing hopper (9) and the concrete mixture therein. An outlet (15) is provided on one side of the placing hopper (9) in the rotation direction. The placing hopper (9) is a cylindrical structure with both front and rear ends closed and an open top. The open top is the inlet, and the outlet (15) is located between the bottom of the placing hopper (9) and the inlet; a placing hopper driving mechanism for driving the placing hopper (9) to rotate to pour the concrete mixture out through the outlet (15) into a concrete test mold (37); a controller connected to the placing hopper driving mechanism. The controller responds to the data of the weighing sensor (8) to start the placing hopper driving mechanism, so as to drive the placing hopper (9) to rotate downward toward the side where the outlet (15) is located during placing; support shafts (11) are fixedly provided at both ends of the placing hopper (9), and the two support shafts (11) are coaxially arranged; the placing device further includes a scraping structure (27) for scraping the remaining concrete mixture in the placing hopper (9). The scraping structure (27) includes a scraper rotating shaft (28) passing through the placing hopper (9) and the support shaft (11). A scraper (30) for scraping the remaining concrete mixture is installed on the scraper rotating shaft (28). A scraping driving mechanism for driving the scraper rotating shaft (28) to rotate is also provided on the support base; the scraper (30) is of a V-shaped structure and contacts the inner wall of the placing hopper (9), and the outlet (15) corresponds to the middle position of the scraper (30).

2. The concrete placing device according to claim 1, characterized in that, the outlet (15) is a circumferentially closed outlet hole, and the placing device further includes a cover plate (16) movably assembled on the placing hopper (9). The cover plate (16) is used to close and open the outlet hole.

3. The concrete placing device according to claim 2, characterized in that, the cover plate (16) is hinged to the placing hopper (9), and a cylinder (20) is also hinged to the placing hopper (9). The cylinder (20) is hinged and assembled with the cover plate (16), and the cylinder (20) is used to drive the placing hopper (9) to rotate.

4. The concrete placing device according to claim 2, characterized in that, an outlet circular pipe (43) is fixed at the outlet hole, and an inlet is provided at the top of the placing hopper (9); the outlet circular pipe (43) has a first end connected to the placing hopper (9) and a second end facing away from the placing hopper (9). The outlet circular pipe (43) extends from the first end to the second end and is inclined toward the direction where the inlet is located.

5. The concrete placing device according to claim 1 or 2 or 3 or 4, characterized in that, two weighing sensors (8) are arranged, and the interval direction of the two weighing sensors (8) is consistent with the extension direction of the rotation axis of the placing hopper (9); A bearing seat (14) is provided on each weighing sensor (8), and the support shaft (11) is inserted into the bearing seat (14) on the corresponding side.

6. The concrete placing equipment according to claim 1, characterized in that a scraping drive mechanism protective cover (36) is provided on the support seat, and the scraping drive mechanism protective cover (36) is used to cover the scraping drive mechanism therein.

7. The concrete placing equipment according to claim 1 or 2 or 3 or 4, characterized in that the hopper drive mechanism includes a motor fixed on the support seat and a first gear (24) connected to the motor, a second gear (25) is fixed on the hopper (9), the first gear (24) and the second gear (25) are meshed with each other, and the diameter of the first gear (24) is smaller than the diameter of the second gear (25).

8. The concrete placing equipment according to claim 1 or 2 or 3 or 4, characterized in that a hopper drive mechanism protective cover (26) is provided on the support seat, and the hopper drive mechanism protective cover (26) is used to cover the hopper drive mechanism therein.

9. The concrete placing equipment according to claim 1 or 2 or 3 or 4, characterized in that the placing equipment includes a frame (1) and two guide rails (2) provided on the frame, the support seat includes two support units corresponding to the two guide rails (2) one by one, and traveling wheels (5) are provided on each support unit, and the traveling wheels (5) are slidably supported on the guide rails (2).

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