Concrete dump truck with uniform coarse aggregate distribution

Abstract

The application discloses a concrete self-unloading truck with uniformly distributed coarse aggregate, which comprises a vehicle body for driving movement and a vehicle hopper body for loading materials installed above the vehicle body; two first supporting rods and one second supporting rod are sequentially installed inside the vehicle hopper body from left to right, a first stirring mechanism in a rod structure is installed on the outer side of the first supporting rod; a second stirring mechanism in an arc structure is installed on the outer side of the second supporting rod; a hydraulic cylinder mechanism is installed inside the bottom surface of the vehicle body, and the output end of the hydraulic cylinder mechanism is connected with the bottom surface of the vehicle hopper body. The concrete self-unloading truck with uniformly distributed coarse aggregate can stir the concrete in the vehicle hopper body in different ways, thereby increasing the stirring mode and improving the stirring effect in the later stage, so that the sinking of the coarse aggregate can be well reduced, and the coarse aggregate in the vehicle hopper body can be uniformly distributed.

Description

Technical Field

[0001] This invention relates to the field of concrete dump truck technology, specifically to a concrete dump truck with uniformly distributed coarse aggregate. Background Technology

[0002] Concrete dump trucks effectively maintain the fluidity of ready-mixed concrete during transportation, ensuring its proper use later. However, some issues still exist with concrete dump trucks currently on the market, such as:

[0003] The prior art, disclosed in application number "CN201811403752.7" as "a dump truck with a mixing function," modifies a traditional handcart by incorporating a mixing device within its cargo box. This allows for thorough mixing of the concrete within the box during transport, reducing concrete loss due to hardening. It effectively addresses the inconveniences of traditional dump trucks in terms of mixing, transportation, and preventing hardening, thus compensating for current construction shortcomings, improving construction efficiency, and reducing labor costs. More specifically, the mixing device includes mixing blades located within the cargo box, driven to rotate by a transmission device. This structural arrangement, with the mixing blades rotating within the cargo box via a transmission device, achieves the function of mixing the concrete within the box. More specifically, the transmission device includes a transmission gear and a connecting rod located at the bottom of the cargo box. The transmission gear is bolted to the lower part of the connecting rod, and the mixing blades are fixed to the upper part of the connecting rod with nuts. The transmission gear is driven to rotate by a drive device. With this structural design, the drive device drives the transmission gear to rotate, which in turn drives the connecting rod and the mixing blade fixed to the upper part of the connecting rod to rotate together, so that the mixing blade can mix the concrete in the box.

[0004] The prior art disclosed in application number "CN202220006238.5" is a "mobile construction site concrete dump truck". It drives a spiral mixer to rotate through a drive mechanism, which includes components such as a motor and a reduction gear. The spiral mixer is set at an angle or horizontally inside the vehicle body. When the internal shape of the vehicle body is the same as the mixing tank of a concrete mixer truck, the spiral mixer is set at an angle. When the vehicle body is a conventional box body, the axis of the spiral mixer is set horizontally. The structure of the spiral mixer inside the vehicle body is similar to the structure of the horizontal mixer commonly found in construction site laboratories. The rotating spiral mixer mixes the concrete, ensuring good workability of the concrete inside the vehicle body, thereby ensuring the quality of the concrete during construction.

[0005] Although the concrete dump trucks mentioned above are all equipped with mixing mechanisms, which can reduce the possibility of coarse aggregate settling, the mixing mechanism structure inside the concrete dump trucks is relatively simple and singular, resulting in poor mixing effect. It cannot effectively reduce coarse aggregate settling, and the coarse aggregate will still settling during the transportation process. This results in uneven distribution of coarse aggregate, causing it to pile up during the later unloading process, requiring manual dispersal and increasing the workload after unloading.

[0006] Therefore, we proposed a concrete dump truck with uniformly distributed coarse aggregate to solve the problems mentioned above. Summary of the Invention

[0007] The purpose of this invention is to provide a concrete dump truck with uniform coarse aggregate distribution, in order to solve the problem mentioned in the background art. Although current concrete dump trucks on the market are equipped with mixing mechanisms, which can reduce the possibility of coarse aggregate settling, the mixing mechanism structure in the aforementioned concrete dump trucks is relatively simple and singular, resulting in poor mixing effect. It cannot effectively reduce coarse aggregate settling, and the coarse aggregate still settles during the transportation process, resulting in uneven distribution of coarse aggregate. This causes coarse aggregate to accumulate during the later unloading process, requiring manual dispersion, which in turn increases the workload after unloading.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a concrete dump truck with uniformly distributed coarse aggregate, comprising a vehicle body for driving and moving, and a cargo bed body installed above the vehicle body for loading materials.

[0009] The interior of the truck bed is equipped with two first support rods and one second support rod from left to right. A first stirring mechanism with a rod structure is installed on the outside of the first support rod.

[0010] A second stirring mechanism with an arc-shaped structure is installed on the outside of the second support rod;

[0011] A hydraulic cylinder mechanism is installed inside the bottom surface of the vehicle body, and the output end of the hydraulic cylinder mechanism is connected to the bottom surface of the truck bed body.

[0012] Preferably, the front and rear sides of the right side of the truck bed are connected to the vehicle body via rotating shafts, and an opening and closing door for unloading materials is installed inside the right side of the truck bed.

[0013] Preferably, the front ends of both the first support rod and the second support rod penetrate the front side of the truck bed body, and the front ends of the first support rod and the second support rod form a synchronous rotation structure through the second sprocket assembly. The front end of the second support rod is connected to the motor.

[0014] Preferably, the front and rear sides of the truck bed body are provided with through slots, and the length of the through slots is less than the length of the truck bed body.

[0015] The upper part of the truck body is connected to a temporary storage box, the upper part of which is equipped with a feed inlet, and the bottom of which is equipped with two rows of discharge outlets. The interior of the temporary storage box is a hollow structure.

[0016] Preferably, the front side of the temporary storage box is rotatably connected to a second protruding rod, the front end of which passes through a groove on the front side of the truck bed body.

[0017] Preferably, a single-turn reciprocating screw is installed on the front side of the truck body, and a second protruding rod is threaded to the outer side of the single-turn reciprocating screw. The temporary storage box forms a reciprocating sliding structure with the truck body through the second protruding rod.

[0018] Preferably, a connecting shaft is installed on the front side of the truck body. The right end of the connecting shaft is connected to the leftmost first support rod through a bevel gear set, and the left end of the connecting shaft is connected to the left end of the single-turn reciprocating screw through a first sprocket assembly.

[0019] Preferably, a first protruding rod is installed on the rear side of the temporary storage box, the rear end of the first protruding rod penetrates the interior of the through groove on the rear side of the truck body, and a transmission gear is keyed to the outer side of the rear end of the first protruding rod.

[0020] A spiral spring is fitted on the outer side of the second protruding rod, and one end of the spiral spring is connected to the temporary storage box.

[0021] Preferably, a horizontal plate is installed on the rear side of the truck bed body, and a row of rack assemblies is installed at equal intervals on the upper surface of the horizontal plate. The upper part of the rack assembly is engaged with the transmission gear, and the highest point of the rack assembly is lower than the lowest point of the through groove.

[0022] The temporary storage box is configured as a reciprocating rotating structure by means of a first protrusion and a second protrusion.

[0023] Compared with the prior art, the beneficial effects of the present invention are: this concrete dump truck with uniformly distributed coarse aggregate can mix the concrete in the truck bed in different ways, thereby increasing the number of mixing methods and improving the later mixing effect, which can effectively reduce the settling of coarse aggregate and make the coarse aggregate in the truck bed uniformly distributed. The specific details are as follows:

[0024] By using the first mixing mechanism with a rod structure and the second mixing mechanism with an arc-shaped plate structure in cooperation, the concrete in the truck bed can be mixed in different ways, thereby increasing the number of mixing methods and improving the mixing effect in the later stage. This can effectively reduce the settling of coarse aggregate, so that the coarse aggregate in the truck bed can be evenly distributed, thus avoiding the coarse aggregate from piling up due to settling in the later stage. No manual dispersion is required from the staff, reducing the workload and facilitating the unloading operation of the dump truck in the later stage.

[0025] Furthermore, by adding thickener or water-reducing agent into the hollow storage box, the thickener or water-reducing agent can be sprinkled into the vehicle body through the discharge port. Later, through the combined mixing of the first and second mixing mechanisms, the thickener or water-reducing agent can be mixed with the concrete, which can reduce the flowability of the concrete, thereby further reducing the settling of coarse aggregate and facilitating the uniform distribution of coarse aggregate in the concrete dump truck.

[0026] At the same time, the single-rotor reciprocating screw drives the second cam and the temporary storage box to move back and forth together, so that the temporary storage box can evenly sprinkle the thickener or water-reducing agent into the truck body, which facilitates the improvement of the mixing efficiency in the later stage.

[0027] By using the connecting shaft and the first sprocket assembly together, the rotation of the first support rod can drive the single-turn reciprocating screw to rotate, eliminating the need for an additional power source and saving energy.

[0028] While the first protruding rod moves, it is intermittently meshed with the transmission gear through multiple sets of equally spaced rack assemblies, which can drive the first protruding rod to reciprocate intermittently. This causes the first protruding rod to drive the temporary storage box to reciprocate intermittently at a certain angle, which facilitates increasing the material discharge range of the discharge port below the temporary storage box. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0030] Figure 2 This is a schematic diagram of the three-dimensional structure of the truck bed body of the present invention;

[0031] Figure 3 This is a schematic cross-sectional view of the body of the truck bed of the present invention;

[0032] Figure 4 This is a schematic diagram of the bottom structure of the truck bed body of the present invention;

[0033] Figure 5 This is a top view of the main body of the truck bed of the present invention;

[0034] Figure 6 This is a three-dimensional structural diagram of the first stirring mechanism of the present invention;

[0035] Figure 7 For the present invention Figure 6 Enlarged structural diagram at point A in the middle;

[0036] Figure 8 This is a three-dimensional structural diagram of the truck bed body during unloading of materials according to the present invention.

[0037] In the diagram: 1. Vehicle body; 2. Truck bed body; 201. Rotating shaft; 3. Through groove; 4. First support rod; 41. First mixing mechanism; 5. Second support rod; 51. Second mixing mechanism; 6. Temporary storage box; 61. Feed inlet; 62. Discharge outlet; 7. Single-rotor reciprocating screw; 71. First sprocket assembly; 8. Second sprocket assembly; 9. First protruding rod; 91. Transmission gear; 10. Second protruding rod; 1001. Scroll spring; 11. Cross plate; 111. Rack assembly; 12. Connecting shaft; 13. Hydraulic cylinder mechanism. Detailed Implementation

[0038] 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.

[0039] Please see Figures 1-8 The present invention provides the following technical solution:

[0040] Example 1: Please refer to the appendix. Figures 1-6 As shown, in existing concrete dump trucks, coarse aggregates tend to settle during concrete transportation, resulting in uneven distribution within the truck. This leads to coarse aggregate accumulation after unloading, requiring workers to use rakes to disperse the aggregates, increasing workload. To address this technical problem, this embodiment discloses the following technical content:

[0041] The vehicle includes a vehicle body 1 for driving and a cargo box body 2 mounted on top of the vehicle body 1 for loading materials. Inside the cargo box body 2, from left to right, two first support rods 4 and one second support rod 5 are installed. A first stirring mechanism 41 with a rod structure is installed on the outside of the first support rods 4. A second stirring mechanism 51 with an arc shape is installed on the outside of the second support rod 5. A hydraulic cylinder mechanism 13 is installed inside the bottom surface of the vehicle body 1, and the output end of the hydraulic cylinder mechanism 13 is connected to the bottom surface of the cargo box body 2.

[0042] The front and rear sides of the right side of the truck body 2 are connected to the vehicle body 1 via rotating shafts 201. An opening and closing door for unloading is installed inside the right side of the truck body 2. The front ends of the first support rod 4 and the second support rod 5 both penetrate the front side of the truck body 2. The front ends of the first support rod 4 and the second support rod 5 form a synchronous rotation structure via the second sprocket assembly 8. The front end of the second support rod 5 is connected to a motor. Through slots 3 are provided inside the front and rear sides of the truck body 2, and the length of the through slots 3 is less than the length of the truck body 2. A temporary storage box 6 is connected inside the upper part of the truck body 2. A feed inlet 61 is installed above the temporary storage box 6, and two rows of discharge ports 62 are installed on the bottom surface of the temporary storage box 6. The interior of the temporary storage box 6 is a hollow structure.

[0043] First, concrete is poured into the truck body 2. Then, the driver moves the truck body 1, which in turn moves the truck body 2, allowing the concrete to be transported. During the transport, the outer end of the second support rod 5 is connected to an external motor via a coupling. The motor drives the second support rod 5 to rotate, and the outer end of the second support rod 5 drives the other two first support rods 4 to rotate via the second sprocket assembly 8. When the first support rods 4 rotate, they drive the outer first mixing mechanism 41, which is set as a rod, to rotate. When multiple sets of first mixing mechanisms 41 rotate, they mix the concrete in the truck body 2. When the second support rods 5 rotate, they drive the outer second mixing mechanism 51, which is arc-shaped, to rotate. The arc-shaped second mixing mechanism 51 will scoop up a portion of the concrete and pour it down from top to bottom. This process is repeated to effectively mix the concrete. Therefore, by using the different mixing methods of the first mixing mechanism 41 and the second mixing mechanism 51, not only can the mixing quality of the concrete in the truck body 2 be improved, but the mixing efficiency can also be improved, thus ensuring that the coarse aggregate in the concrete is evenly distributed in the truck body 2.

[0044] After transportation to the usage area, stop the vehicle body 1 from moving. Then, manually open the door on the right side of the truck bed 2, and activate the hydraulic cylinder mechanism 13 at the bottom of the vehicle body 1. This causes the output end of the hydraulic cylinder mechanism 13 to rotate the truck bed 2, causing it to flip around the rotation shaft 201, as shown in the attached diagram. Figure 8 As shown, at this time, the concrete can be discharged downward through the opening on the right side of the inclined truck body 2. Since the coarse aggregate is evenly distributed in the truck body 2 through mixing, the coarse aggregate after unloading is also evenly distributed. After unloading, there is no need for the staff to take an iron rake to disperse the coarse aggregate, thus reducing the workload of the staff and making it easier for the concrete dump truck to carry out unloading operations.

[0045] Example 2: Based on Example 1, this example further improves the uniform distribution of coarse aggregate. See Appendix for details. Figures 5-7 As shown, a second protruding rod 10 is rotatably connected to the front side of the temporary storage box 6, and the front end of the second protruding rod 10 passes through the through groove 3 on the front side of the truck body 2. A single-turn reciprocating screw 7 is installed on the front side of the truck body 2, and the second protruding rod 10 is threaded to the outer side of the single-turn reciprocating screw 7. The temporary storage box 6 and the truck body 2 form a reciprocating sliding structure through the second protruding rod 10. A connecting shaft 12 is installed on the front side of the truck body 2. The right end of the connecting shaft 12 is connected to the leftmost first support rod 4 through a bevel gear set, and the left end of the connecting shaft 12 is connected to the left end of the single-turn reciprocating screw 7 through the first sprocket assembly 71.

[0046] While the first mixing mechanism 41 and the second mixing mechanism 51 are rotating and mixing, the operator injects thickener or water-reducing agent into the hollow storage box 6 through the feed port 61. At the same time, when the leftmost first support rod 4 rotates, it drives the connecting shaft 12 to rotate through the bevel gear set. When the connecting shaft 12 rotates, it drives the single-rotor reciprocating screw 7 to rotate through the first sprocket assembly 71. When the single-rotor reciprocating screw 7 rotates, it drives the second protruding rod 10 connected by the outer thread to move back and forth. At this time, the second protruding rod 10 drives the storage box 6 to move back and forth inside the truck body 2 above the truck body 2. Therefore, the thickener or water-reducing agent in the storage box 6 is evenly sprinkled into the truck body 2 through the discharge port 62. Combined with the mixing work of the first mixing mechanism 41 and the second mixing mechanism 51, the thickener or water-reducing agent is well mixed with the concrete. Then, the thickener or water-reducing agent reduces the fluidity of the concrete, thereby further reducing the possibility of coarse aggregate sinking, so that the coarse aggregate can be evenly distributed in the truck body 2.

[0047] Example 3: Based on Example 2, the concrete dump truck in this example can increase the discharge range of the discharge port 62, allowing the thickener or water-reducing agent to fall to various positions. See attached diagram for details. Figure 2 and attached Figure 6 As shown, a first protruding rod 9 is installed on the rear side of the temporary storage box 6. The rear end of the first protruding rod 9 passes through the interior of the through groove 3 on the rear side of the truck body 2. A transmission gear 91 is keyed to the outer side of the rear end of the first protruding rod 9. A spiral spring 1001 is sleeved on the outer side of the second protruding rod 10. One end of the spiral spring 1001 is connected to the temporary storage box 6. A horizontal plate 11 is installed on the rear side of the truck body 2. A row of rack assemblies 111 is installed at equal intervals on the upper surface of the horizontal plate 11. The upper part of the rack assembly 111 meshes with the transmission gear 91. The highest point of the rack assembly 111 is lower than the lowest point of the through groove 3. The temporary storage box 6 forms a reciprocating rotating structure through the first protruding rod 9 and the second protruding rod 10.

[0048] As the temporary storage box 6 moves left and right, it drives the first protruding rod 9 to move left and right as well. When the first protruding rod 9 drives the transmission gear 91 to mesh with the rack assembly 111 on the horizontal plate 11, the rack assembly 111 drives the transmission gear 91 to rotate. At this time, the transmission gear 91 drives the first protruding rod 9 and the temporary storage box 6 to rotate. At this time, the spiral spring 1001 stores energy. When the transmission gear 91 moves to disengage from the rack assembly 111 on the horizontal plate 11, the stored energy of the spiral spring 1001 automatically drives the temporary storage box 6 to rotate in the opposite direction and reset. This causes the temporary storage box 6 to reciprocate at a certain angle, which in turn causes the discharge port 62 to reciprocate at a certain angle, thus increasing the discharge range of the discharge port 62. This allows the thickener or water-reducing agent to fall and mix well with the concrete, thereby completing a series of tasks.

[0049] 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 truck with uniform distribution of coarse aggregate, comprising a vehicle body (1) for driving movement and a vehicle hopper body (2) mounted above the vehicle body (1) for loading material; characterized in that Further comprising: The inside of the vehicle hopper body (2) is sequentially provided with two first support rods (4) and one second support rod (5) from left to right, and the outer side of the first support rod (4) is provided with a first stirring mechanism (41) in a rod structure; The outer side of the second support rod (5) is provided with a second stirring mechanism (51) in an arc shape structure; The bottom surface of the vehicle body (1) is internally provided with a hydraulic cylinder mechanism (13), and the output end of the hydraulic cylinder mechanism (13) is connected with the bottom surface of the vehicle hopper body (2); The front side and the rear side of the vehicle hopper body (2) are each internally provided with a through slot (3), and the length of the through slot (3) is less than the length of the vehicle hopper body (2); The upper inside of the vehicle hopper body (2) is connected with a temporary storage box (6); The front side of the temporary storage box (6) is rotatably connected with a second protruding rod (10), and the front end of the second protruding rod (10) penetrates into the through slot (3) in the front side of the vehicle hopper body (2); The front side of the vehicle hopper body (2) is provided with a single-rotation reciprocating screw rod (7), the outer side of the single-rotation reciprocating screw rod (7) is threadedly connected with the second protruding rod (10), and the temporary storage box (6) and the vehicle hopper body (2) constitute a reciprocating sliding structure through the second protruding rod (10); The rear side of the temporary storage box (6) is provided with a first protruding rod (9), the rear end of the first protruding rod (9) penetrates into the inside of the through slot (3) in the rear side of the vehicle hopper body (2), and the rear end of the first protruding rod (9) is externally keyed with a transmission gear (91); The outer side of the second protruding rod (10) is provided with a vortex spring (1001), one end of the vortex spring (1001) is connected with the temporary storage box (6); The rear side of the vehicle hopper body (2) is provided with a horizontal plate (11), the upper surface of the horizontal plate (11) is provided with a row of rack assemblies (111) at equal intervals, the upper side of the rack assembly (111) is engaged with the transmission gear (91), and the highest point of the rack assembly (111) is lower than the lowest point of the through slot (3); The temporary storage box (6) and the second protruding rod (10) constitute a reciprocating rotating structure through the first protruding rod (9).

2. The coarse aggregate uniformly distributed concrete self-discharging truck according to claim 1, characterized in that: The front and rear sides of the right side of the vehicle hopper body (2) are connected with the vehicle body (1) through rotating shafts (201), and the inside of the right side of the vehicle hopper body (2) is internally provided with an opening and closing door for unloading.

3. The coarse aggregate uniformly distributed concrete self-discharging truck of claim 1, wherein: The front ends of the first support rod (4) and the second support rod (5) penetrate into the front side of the vehicle hopper body (2), the front ends of the first support rod (4) and the second support rod (5) constitute a synchronous rotating structure through a second sprocket assembly (8), and the front end of the second support rod (5) is connected with a motor.

4. The coarse aggregate uniformly distributed concrete self-discharging truck of claim 1, wherein: The upper side of the temporary storage box (6) is provided with an inlet (61), the bottom surface of the temporary storage box (6) is provided with two rows of discharge ports (62), and the inside of the temporary storage box (6) is provided in a hollow structure.

5. The coarse aggregate uniformly distributed concrete self-discharging truck of claim 1, wherein: The front side of the car body (2) is provided with a connecting shaft (12), the right end of the connecting shaft (12) is connected with the leftmost first supporting rod (4) through a bevel gear set, and the left end of the connecting shaft (12) is connected with the left end of the single-rotation reciprocating screw rod (7) through a first chain wheel assembly (71).

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