Concrete self-dumping truck for long-distance transport of low-slump pre-cooled concrete

Abstract

The application discloses a concrete self-unloading vehicle for long-distance transportation of low-slump precooled concrete, and relates to the field of concrete self-unloading vehicles.The concrete self-unloading vehicle comprises a vehicle body, a mixing self-unloading tank and a supporting seat, the mixing self-unloading tank is arranged above the vehicle body, the outer side of the mixing self-unloading tank is connected with the supporting seat, the supporting seat provides support for the mixing self-unloading tank, and drives the rotation of the mixing self-unloading tank, a discharge plate is arranged below the right side opening of the mixing self-unloading tank, a movable disc is arranged at the right side opening of the mixing self-unloading tank, and a moving control mechanism is connected with the left side of the movable disc to control the movement of the movable disc.The concrete self-unloading vehicle for long-distance transportation of low-slump precooled concrete can shield the end opening of the mixing self-unloading tank through the arrangement of the movable disc, so that the volatilization of water in the mixing self-unloading tank is reduced, and the slump of the concrete is prevented from continuously decreasing, thereby realizing long-distance transportation of the concrete.

Description

Technical Field

[0001] This invention relates to the field of concrete dump truck technology, specifically to a concrete dump truck for long-distance transportation of low-slump pre-cooled concrete. Background Technology

[0002] Concrete is a common material in engineering construction. When it is used, it is usually mixed in the factory and then transported to the construction site by dump trucks or mixer trucks. In order to ensure the normal use of the concrete, the dump trucks will continuously mix the concrete during transportation.

[0003] Current dump trucks or concrete mixer trucks still have some shortcomings in terms of concrete feeding speed and automatic concrete discharge when transporting concrete. To overcome the above problems, prior art 1 (Chinese patent published on April 11, 2023, with publication number CN115534127B) provides a concrete mixer truck, including a cab and a chassis, as well as a base, a mixing drum, a support mechanism, a feeding mechanism, and a discharging mechanism. A rotating assembly is installed in the chassis, and the output shaft of the rotating assembly extends from the chassis and is fixedly connected to the bottom of the base. The support mechanism includes a fixed frame and a support frame. The feeding mechanism includes a connecting seat, a feeding swing arm, and a feeding cylinder. The discharging mechanism includes a connecting bracket, a discharging hopper, and a dropping frame, and a material blocking component is provided in the dropping frame. This invention enables the mixing drum's feed inlet to be aligned with different positions without moving the mixer truck, avoiding frequent movement of the mixer truck. It also achieves automatic feeding through the feeding mechanism, greatly reducing the intensity of manual labor. At the same time, the material blocking component enables control of the feeding speed, effectively preventing concrete from falling or splashing.

[0004] Prior art 2 (Chinese patent publication number CN110355884A, published on October 22, 2019) describes an automatic concrete transport vehicle. Equipped with a high-pressure device, it boasts strong cleaning capabilities and high impact force, effectively cleaning even the most difficult-to-clean areas inside the vehicle, thus improving the practicality of the concrete transport vehicle cleaning device. The vehicle runs on a flat track, significantly reducing pipe deformation caused by ground bumps. Sensors are used to measure the vehicle's position in real time, enabling precise positioning and smooth control of acceleration and deceleration, ensuring stability during transport and improving product quality. Simultaneously, it eliminates the need for an operator, saving labor, shortening pipe transport time, and increasing overall workshop production efficiency.

[0005] While existing technologies can solve some of the current problems with dump trucks, when dump trucks transport low-slump concrete or concrete over long distances, the low slump and poor fluidity of the concrete, coupled with the long transportation time, lead to continuous evaporation of water from the concrete due to external temperature fluctuations. Furthermore, water cannot be added directly, causing the slump to decrease further, increasing the difficulty of mixing and affecting the normal use of the concrete. Additionally, the open end of the dump truck further contributes to the continuous dissipation of water from the concrete inside, which is also detrimental to its subsequent use. Summary of the Invention

[0006] The purpose of this invention is to provide a concrete dump truck for long-distance transportation of low-slump pre-cooled concrete, in order to solve the problems mentioned in the background art, such as the continuous evaporation of water in the concrete during transportation due to external temperature, which affects the slump of the concrete, increases the difficulty of mixing, and affects the normal use of the concrete.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a concrete dump truck for long-distance transportation of low-slump pre-cooled concrete, comprising a vehicle body, a mixing dump tank, and a support base. The mixing dump tank is positioned above the vehicle body, and the support base is connected to the outer side of the mixing dump tank to provide support and drive the rotation of the mixing dump tank. A discharge plate is provided below the right-side opening of the mixing dump tank, and a movable disc is provided at the right-side opening of the mixing dump tank. A movement control mechanism is connected to the left side of the movable disc to control its movement. After the movable disc and the right end of the mixing dump tank are fitted together, the right-side opening of the mixing dump tank is closed. A movable ring is rotatably mounted on the left side of the movable disc. The movable ring fits into the mixing self-unloading tank and rotates with the rotation of the mixing self-unloading tank. A feed hopper is fixed on the right side of the movable disc, and a through groove is connected to the left end of the feed hopper. The through groove is opened inside the movable disc. A guide cover is fixed to the left end of the through groove, so that the feed hopper can still feed into the mixing self-unloading tank through the guide cover after the movable disc moves to the right. A baffle is set inside the through groove to block the through groove, and the baffle and the movable disc form an up-and-down sliding structure. An opening and closing control mechanism is set above the movable disc. A circulation channel is opened inside the movable disc, and an airflow blowing mechanism is set inside the circulation channel.

[0008] To further optimize this technical solution, the movement control mechanism includes a support block and a telescopic control rod;

[0009] The support block is fitted onto the outside of the mixing tank and is connected to the vehicle body;

[0010] The telescopic control rod is fixed to the right side of the support block, and the right end of the telescopic control rod is fixedly connected to the movable plate to control the movement of the movable plate.

[0011] To further optimize this technical solution, the opening and closing control mechanism includes a return spring, a control rope, a winding shaft, and a drive mechanism;

[0012] A return spring is positioned above the baffle to provide downward thrust to the baffle.

[0013] A control rope is fixed above the baffle to control its movement.

[0014] The take-up shaft is rotatably mounted inside the movable disc, and is connected to the upper end of the control rope;

[0015] The drive mechanism controls the rotation of the winding shaft, thereby controlling the winding of the control rope.

[0016] To further optimize this technical solution, the driving mechanism includes a transmission gear and a driving plate;

[0017] The transmission gear is fixed to the outside of the take-up shaft;

[0018] The drive plate is positioned above the transmission gear and forms a meshing connection with the transmission gear, with the left end of the drive plate fixed to the surface of the support block.

[0019] To further optimize this technical solution, the left side of the circulation channel is designed with an open structure, and a cooler is installed inside the circulation channel. The cooler is installed on the surface of the movable plate to cool the airflow in the circulation channel.

[0020] To further optimize this technical solution, the airflow blowing mechanism includes a rotating shaft, fan blades, a support plate, and a rotation control mechanism;

[0021] A rotating shaft is located inside the circulation channel;

[0022] Fan blades are fixed to the surface of the rotating shaft;

[0023] A support plate is fixed inside the circulation channel, and a rotating shaft is set on the side of the support plate to form a rotatable connection between the support plate and the support plate.

[0024] The rotation control mechanism is connected to the rotation shaft and provides power to the rotation shaft.

[0025] To further optimize this technical solution, the left end of the movable ring is made of rubber, and the right end of the movable ring has an enlarged structural design.

[0026] To further optimize this technical solution, the rotation control mechanism is connected to the movable ring, and the rotation of the movable ring provides power for it.

[0027] To further optimize this technical solution, the rotation control mechanism includes a transmission shaft, a transmission belt, and a drive gear;

[0028] The drive shaft is rotatably mounted inside the movable disc;

[0029] A transmission belt is installed on the surface of the transmission shaft, and the transmission shaft is connected to the rotating shaft through the transmission belt;

[0030] The drive gear is fixed to the surface of the transmission shaft, and the drive gear is located inside the movable ring and forms a meshing connection with the movable ring.

[0031] Compared with the prior art, the beneficial effects of the present invention are:

[0032] 1. The movable plate can cover the end opening of the mixing tank, thereby reducing the evaporation of moisture inside the mixing tank and preventing its slump from continuously decreasing, so as to facilitate long-distance transportation of concrete.

[0033] 2. By sealing the feed channel of the feed hopper with baffles, the evaporation of water in the mixing tank is reduced, and a certain amount of heat is also isolated. Combined with the airflow provided by the circulation channel, the mixing tank can be cooled to a certain extent, so that the mixing is kept at a relatively low ambient temperature in order to maintain its slump.

[0034] 3. The movement of the baffle is achieved by the movement of the movable plate. When the movable plate is moved to open the right opening of the mixing tank, the baffle can move automatically to open the passage and allow material to be added. When the movable plate moves to the left to seal the mixing tank, the baffle can automatically close the passage, making it more convenient to use.

[0035] 4. The rotation of the fan blades drives the airflow in the circulation channel, and the airflow is cooled by the cooler, which can keep the temperature environment inside the mixing tank relatively low and prevent its slump from changing too quickly due to temperature.

[0036] 5. The rotation of the movable ring can provide power for the rotation of the fan blades, making the operation of the device more energy-efficient. The movable ring can rotate with the rotation of the mixing self-unloading tank, eliminating the need for an additional power source. Attached Figure Description

[0037] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0038] Figure 2 This is a side view of the structure of the present invention;

[0039] Figure 3 This is a schematic diagram of the three-dimensional structure of the support block of the present invention;

[0040] Figure 4 This is a schematic diagram of the three-dimensional structure of the movable disc of the present invention;

[0041] Figure 5 This is a schematic diagram of the main cross-sectional structure of the movable disk of the present invention;

[0042] Figure 6 This is a schematic diagram of the side cross-section structure of the baffle of the present invention;

[0043] Figure 7 For the present invention Figure 5 Enlarged structural diagram at point a;

[0044] Figure 8 This is a side view of the drive gear structure of the present invention.

[0045] In the diagram: 1. Vehicle body; 2. Mixing and unloading tank; 3. Support base; 4. Feed hopper; 5. Discharge plate; 6. Support block; 7. Movable disc; 8. Telescopic control rod; 9. Guide cover; 10. Through groove; 11. Movable ring; 12. Baffle; 13. Return spring; 14. Control rope; 15. Rewinding shaft; 16. Transmission gear; 17. Drive plate; 18. Circulation channel; 19. Refrigerator; 20. Rotating shaft; 21. Fan blade; 22. Support plate; 23. Transmission shaft; 24. Transmission belt; 25. Drive gear. Detailed Implementation

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] Please see Figures 1-8 The present invention provides the following technical solution: a concrete dump truck for long-distance transportation of low slump pre-cooled concrete, including a vehicle body 1, a mixing dump tank 2 and a support base 3. The mixing dump tank 2 is located above the vehicle body 1, and the support base 3 is connected to the outside of the mixing dump tank 2 to provide support for the mixing dump tank 2 and drive the rotation of the mixing dump tank 2.

[0048] Example 1:

[0049] The invention provides a technical solution, disclosing that a discharge plate 5 is provided below the right opening of the mixing self-unloading tank 2, and a movable disc 7 is provided at the right opening of the mixing self-unloading tank 2. A movement control mechanism is connected to the left side of the movable disc 7 to control its movement. After the movable disc 7 is attached to the right end of the mixing self-unloading tank 2, it closes the right opening of the mixing self-unloading tank 2. A movable ring 11 is rotatably installed on the left side of the movable disc 7. The movable ring 11 is attached to the mixing self-unloading tank 2 and rotates with the rotation of the mixing self-unloading tank 2. A feed hopper 4 is fixed to the right side of the movable disc 7. The left end of the feed hopper 4 is connected to a through groove 10, and the through groove 10 is opened inside the movable plate 7. The left end of the through groove 10 is fixed with a guide cover 9, so that after the movable plate 7 moves to the right, the feed hopper 4 can still feed into the mixing self-unloading tank 2 through the guide cover 9. The inside of the through groove 10 is provided with a baffle 12 to block the through groove 10, and the baffle 12 and the movable plate 7 form an up-and-down sliding structure. The upper part of the movable plate 7 is provided with an opening and closing control mechanism. The inside of the movable plate 7 is provided with a circulation channel 18, and the inside of the circulation channel 18 is provided with an airflow blowing mechanism.

[0050] When in use, the right end opening of the self-unloading mixing tank 2 is sealed by the movable disc 7 to reduce the evaporation of water in the concrete and maintain an effective slump. When discharge is required, the movable disc 7 is moved to the right to open the opening of the self-unloading mixing tank 2, and then the self-unloading mixing tank 2 is rotated in the opposite direction to discharge the concrete from the self-unloading mixing tank 2.

[0051] Example 2:

[0052] Based on Embodiment 1, a movement control mechanism is disclosed, comprising a support block 6 and a telescopic control rod 8. The support block 6 is sleeved on the outside of the mixing self-unloading tank 2 and is connected to the vehicle body 1. The telescopic control rod 8 is fixed to the right side of the support block 6, and the right end of the telescopic control rod 8 is fixedly connected to the movable disc 7 to control the movement of the movable disc 7. The opening and closing control mechanism includes a return spring 13, a control rope 14, a winding shaft 15, and a drive mechanism. The return spring 13 is positioned above the baffle 12 to provide a downward pushing force to the baffle 12. The control rope 14 is fixed... The movement of the baffle 12 is controlled by a mechanism positioned above the baffle 12. The winding shaft 15 is rotatably mounted inside the movable disc 7 and is connected to the upper end of the control rope 14. The drive mechanism controls the rotation of the winding shaft 15 to wind up the control rope 14. The drive mechanism includes a transmission gear 16 and a drive plate 17. The transmission gear 16 is fixed on the outside of the winding shaft 15. The drive plate 17 is positioned above the transmission gear 16 and forms a meshing connection with the transmission gear 16. The left end of the drive plate 17 is fixed to the surface of the support block 6.

[0053] When the movable disc 7 is moved, the movable disc 7 can be moved by the telescopic movement of the telescopic control rod 8. The telescopic control rod 8 obtains stable support through the support block 6, providing support for the movable disc 7. When the movable disc 7 is moved to the right, the rightward transmission gear 16 will move along the drive plate 17, causing the transmission gear 16 to rotate. When the transmission gear 16 rotates, it will drive the winding shaft 15 to rotate. The winding shaft 15 winds up the control rope 14, and the control rope 14 pulls the baffle 12 to move upward, compressing the reset spring 13 and opening the through slot 10. At this time, materials can be added into the mixing self-unloading tank 2 through the feed hopper 4. After the movable disc 7 is moved to the left and reset, the winding shaft 15 rotates in the opposite direction. At this time, the reset spring 13 can push the baffle 12 to move downward, causing the baffle 12 to block the through slot 10.

[0054] Example 3:

[0055] Based on Embodiment 1, a design is disclosed in which the left side of the circulation channel 18 is open, and a cooler 19 is installed inside the circulation channel 18. The cooler 19 is mounted on the surface of the movable plate 7 to cool the airflow in the circulation channel 18. The airflow blowing mechanism includes a rotating shaft 20, fan blades 21, a support plate 22, and a rotation control mechanism. The rotating shaft 20 is located inside the circulation channel 18, the fan blades 21 are fixed to the surface of the rotating shaft 20, the support plate 22 is fixed inside the circulation channel 18, and the rotating shaft 20 is located on the side of the support plate 22, forming a rotatable connection between the support plate 22 and the support plate 22. The rotation control mechanism and the rotating shaft 20 are also included. The rotating shaft 20 is connected to the rotating shaft 20. The left end of the movable ring 11 is made of rubber, and the right end of the movable ring 11 has an enlarged structure design. The rotation control mechanism is connected to the movable ring 11 and provides power to it through the rotation of the movable ring 11. The rotation control mechanism includes a transmission shaft 23, a transmission belt 24, and a drive gear 25. The transmission shaft 23 is rotatably installed inside the movable disc 7. The transmission belt 24 is set on the surface of the transmission shaft 23, and the transmission shaft 23 is connected to the rotating shaft 20 through the transmission belt 24. The drive gear 25 is fixed on the surface of the transmission shaft 23, and the drive gear 25 is located inside the movable ring 11 and forms a meshing connection with the movable ring 11.

[0056] When the self-unloading mixing tank 2 rotates, it drives the movable ring 11 that is in contact with it to rotate. When the movable ring 11 rotates, it drives the drive gear 25 and the transmission shaft 23 to rotate through the meshing of the drive gear 25. The transmission shaft 23 drives the rotating shaft 20 to rotate through the transmission belt 24. The rotating shaft 20 drives the fan blades 21 to rotate, so that the gas in the circulation channel 18 can circulate. At the same time, the gas can be cooled when it passes through the cooler 19, thereby cooling the self-unloading mixing tank 2 and preventing the concrete from heating up and accelerating the change in slump.

[0057] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0058] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A concrete self-unloading vehicle for long-distance transportation of low-slump pre-cooled concrete, comprising a vehicle body (1), a mixing self-unloading tank (2) and a support base (3), the mixing self-unloading tank (2) being arranged above the vehicle body (1), and the outer side of the mixing self-unloading tank (2) being connected with the support base (3) to provide support for the mixing self-unloading tank (2) and drive the rotation of the mixing self-unloading tank (2); characterized in that a discharge plate (5) being arranged below the right side opening of the mixing self-unloading tank (2), and a movable disc (7) being arranged at the right side opening of the mixing self-unloading tank (2), the left side of the movable disc (7) being connected with a movement control mechanism to control the movement of the movable disc (7), the movable disc (7) and the right end of the mixing self-unloading tank (2) being attached to close the right end opening of the mixing self-unloading tank (2), the left side of the movable disc (7) being rotatably connected with a movable ring (11), the movable ring (11) being attached to the mixing self-unloading tank (2) and rotating with the rotation of the mixing self-unloading tank (2), the right side of the movable disc (7) being fixedly connected with a feeding hopper (4), the left end of the feeding hopper (4) being connected with a through slot (10), the through slot (10) being arranged in the interior of the movable disc (7), the left end of the through slot (10) being fixedly connected with a guide cover (9), so that the feeding hopper (4) can still feed into the mixing self-unloading tank (2) through the guide cover (9) after the movable disc (7) moves to the right, the interior of the through slot (10) being provided with a baffle (12) to shield the through slot (10), the baffle (12) and the movable disc (7) forming an up-down sliding structure, the upper side of the movable disc (7) being provided with an opening and closing control mechanism, the interior of the movable disc (7) being provided with a circulating channel (18), and the interior of the circulating channel (18) being provided with an air flow blowing mechanism.

2. The concrete self-discharging vehicle for long distance transport of low slump pre-cooled concrete of claim 1, wherein: The movement control mechanism comprises a support block (6) and a telescopic control rod (8); the support block (6) being sleeved on the outer side of the mixing self-unloading tank (2) and connected with the vehicle body (1); the telescopic control rod (8) being fixedly connected with the right side of the support block (6) and the left end of the movable disc (7), to control the movement of the movable disc (7).

3. The concrete self-discharging vehicle for long distance transport of low slump pre-cooled concrete of claim 2, wherein: The opening and closing control mechanism comprises a reset spring (13), a control rope (14), a winding shaft (15) and a driving mechanism; the reset spring (13) being arranged above the baffle (12) to provide a downward force for the baffle (12); the control rope (14) being fixedly connected with the upper side of the baffle (12) to control the movement of the baffle (12); the winding shaft (15) being rotatably arranged in the interior of the movable disc (7) and connected with the upper end of the control rope (14); the driving mechanism controlling the rotation of the winding shaft (15) to control the winding of the control rope (14).

4. The concrete self-discharging vehicle for long distance transport of low slump pre-cooled concrete of claim 3, wherein: The driving mechanism comprises a transmission gear (16) and a driving plate (17); the transmission gear (16) being fixedly connected with the outer side of the winding shaft (15); the driving plate (17) being arranged above the transmission gear (16) and connected with the transmission gear (16) to form a meshing connection, and the left end of the driving plate (17) being fixedly connected with the surface of the support block (6).

5. The concrete self-discharging vehicle for long distance transport of low slump pre-chilled concrete of claim 1, wherein: The left side of the circulation channel (18) is designed as an open structure, and the circulation channel (18) is internally provided with a refrigerator (19), and the refrigerator (19) is installed on the surface of the movable disc (7) to cool the airflow in the circulation channel (18).

6. The concrete self-discharging vehicle for long distance transport of low slump pre-cooled concrete of claim 5, wherein: The airflow blowing mechanism comprises a rotating shaft (20), a fan blade (21), a support plate (22) and a rotating control mechanism. The rotating shaft (20) is arranged in the circulation channel (18). The fan blade (21) is fixed on the surface of the rotating shaft (20). The support plate (22) is fixed in the circulation channel (18), and the rotating shaft (20) is arranged between the side edge of the support plate (22) and the support plate (22) to form a rotating connection. The rotating control mechanism is connected with the rotating shaft (20) to provide power for the rotating shaft (20).

7. The concrete self-discharging vehicle for long distance transport of low slump pre-cooled concrete of claim 6, wherein: The left end of the movable ring (11) is made of rubber material, and the right end of the movable ring (11) is designed as an enlarged structure.

8. A concrete self-discharging vehicle for long distance transport of low slump pre-cooled concrete according to claim 6 or 7, characterised in that: The rotating control mechanism is connected with the movable ring (11) to provide power for the movable ring (11) through the rotation of the movable ring (11).

9. The concrete self-discharging vehicle for long distance transport of low slump pre-cooled concrete of claim 8, wherein: The rotating control mechanism comprises a transmission shaft (23), a transmission belt (24) and a drive gear (25). The transmission shaft (23) is rotatably installed in the inside of the movable disc (7). The transmission belt (24) is arranged on the surface of the transmission shaft (23), and the transmission shaft (23) is connected with the rotating shaft (20) through the transmission belt (24). The drive gear (25) is fixed on the surface of the transmission shaft (23), and the drive gear (25) is located between the inside of the movable ring (11) and the movable ring (11) to form a meshing connection.

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