Concrete mixing truck

Abstract

The utility model relates to the field of engineering machinery, in particular to a concrete mixing truck. Comprising a transportation box, the transportation box is installed on a vehicle body, a feeding port is formed in the top of the transportation box, a discharging port is formed in the bottom of the transportation box, and an inner cavity of the transportation box is used for containing concrete; the stirring mechanism is arranged in the transportation box and used for stirring concrete; the material conveying mechanism is arranged in the transportation box, and the position where the material conveying mechanism is located is lower than that of the stirring mechanism; according to the device, the appearance of a traditional concrete mixing and transporting cylinder is improved, and a sealed box body structure is adopted, so that the effective loading capacity of concrete is improved by more than 80%, the gravity center of the mixing and transporting cylinder is lowered, the phenomena of layering, segregation and the like of the concrete are improved, and meanwhile, the influences of rollover and height limitation are reduced.

Description

Technical Field

[0001] The utility model relates to the field of engineering machinery, in particular to a concrete mixing transport truck. Background Art

[0002] The development of commercial concrete has eliminated the backward production method of mixing concrete on construction sites. Instead, it is produced and supplied in a centralized manner by specialized concrete factories equipped with large concrete mixing stations (buildings), which has improved the quality of concrete and reduced environmental pollution. However, the centralized production of commercial concrete will inevitably increase the transportation distance (or transportation time) between the concrete mixing site and the construction site. When the transportation distance (or transportation time) exceeds a certain limit and general transportation machinery is still used for transportation, the concrete may stratify and segregate during transportation, or even undergo initial setting, which will seriously affect the quality of concrete and construction quality.

[0003] The tank of traditional mixer trucks is cylindrical and has a certain inclination angle with the frame. The effective capacity is 55%-65%. During the transportation of concrete, the concrete material rotates continuously in the tank with a large inclination angle. 1. The concrete material has a high center of gravity in the mixing drum with a large inclination angle (inclination angle of 10°-21°), which is prone to rollover. The height limit has a greater impact, and the concrete rotates continuously in the tank, which is prone to segregation and stratification. 2. The traditional mixing drum adopts an open design, which is easy to leak, waste concrete materials and pollute the environment. At the same time, it causes water evaporation during transportation, resulting in a decrease in the slump of concrete. Secondary water replenishment is often required during pumping at the construction site. On rainy days, water enters the feed port, diluting the mortar, resulting in the quality of the concrete cannot be guaranteed. 3. After the concrete is unloaded, the residual rate at the bottom of the drum is too large, which is easy to overflow, the filling rate is low, the discharge efficiency is low, it is not conducive to cleaning, and the economic efficiency is low. Utility Model Content

[0004] In view of the problems mentioned in the prior art, the utility model proposes a concrete mixer transport truck, which has solved the problems in the background technology.

[0005] The utility model discloses a concrete mixer transport vehicle, comprising a vehicle body,

[0006] A transport box, which is mounted on the vehicle body, has a feed port at the top and a discharge port at the bottom, wherein the inner cavity of the transport box is used to hold concrete;

[0007] A mixing mechanism, the mixing mechanism provided in the transport box is used for mixing concrete;

[0008] A feeding mechanism, wherein the feeding mechanism is arranged in the transport box and is located lower than the stirring mechanism;

[0009] The water adding mechanism is arranged in the transport box and is used for adding water to the concrete.

[0010] Preferably, the transport box is a closed box structure, the bottom of the transport box is provided with a U-shaped surface that fits the feeding mechanism, and the space between the U-shaped surface and the inner wall of the transport box is hollow.

[0011] Preferably, a feed funnel is provided on the top of the transport box, and also includes a cover plate, one end of the cover plate is movably connected to the feed funnel, and the other end of the cover plate is connected to the feed hydraulic cylinder through a connecting rod, and the feed hydraulic cylinder drives the cover plate to open and close the feed funnel.

[0012] Preferably, the discharge port is provided with at least one discharge box, the discharge box is connected to a discharge plate, the discharge plate is connected to a discharge hydraulic cylinder, and the discharge hydraulic cylinder drives the discharge plate to open and close the discharge box.

[0013] Preferably, the stirring mechanism comprises at least one set of stirring shafts connected to a driving device, and the stirring shafts are sleeved with stirring blades along the length direction.

[0014] Preferably, the feeding mechanism comprises at least one set of feeding shafts connected to the driving device, and the feeding shafts are sleeved with feeding blades along the length direction.

[0015] Preferably, the driving device comprises a reduction motor mounted on the bracket, and the reduction motor is rotationally connected to the stirring shaft and the feeding shaft respectively through gears.

[0016] Preferably, the water adding mechanism includes a water tank and a water spray pipe, the water spray pipe is connected to the water tank through a pipeline, wherein a plurality of water spray valves are also provided on the water spray pipe, the plurality of water spray valves are evenly spaced along the length direction of the water spray pipe, and the water spray valves are aligned with the stirring mechanism.

[0017] Preferably, a shock-absorbing gasket is provided between the vehicle body and the transport box.

[0018] Preferably, a fan and a heat dissipation water tank are also provided on the vehicle body.

[0019] Compared with the prior art, the utility model has achieved the following technical effects:

[0020] This device improves the appearance of the traditional concrete mixing and transporting drum and adopts a sealed box structure, which increases the effective concrete loading capacity by more than 80%, lowers the center of gravity of the mixing and transporting drum, improves the phenomena of concrete stratification and segregation, and reduces the impact of rollover and height restrictions.

[0021] The device also optimizes the arrangement of the discharge port and the feed port, solves the problem of leakage in the mixing drum port sealing, reduces the waste of concrete materials and environmental pollution, and can effectively prevent the evaporation of concrete moisture and the entry of rainwater.

[0022] The device is equipped with a feeding mechanism, which not only improves the mixing capacity during transportation, but also improves the unloading efficiency and reduces the amount of concrete residue in the mixing drum during unloading.

[0023] The device can add water to the concrete through the water adding device, and the multi-axis mixing greatly improves the uniformity of concrete mixing. The unloading is controlled by the switch, and the concrete discharge amount can be controlled more accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 This is the front view of the utility model;

[0026] Figure 3 This is a schematic diagram of the internal structure of the transport box of the utility model;

[0027] Figure 4 It is a schematic diagram of the stirring mechanism of the utility model.

[0028] Figure numerals: 1. cover plate; 2. first connecting rod; 3. second connecting rod; 4. feed hydraulic cylinder; 5. gear; 6. reduction motor; 7. water tank; 8. body; 9. radiator; 10. fan; 11. bracket; 12. fuel tank; 13. spare tire; 14. chassis support; 15. discharge hydraulic cylinder; 16. discharge plate; 17. discharge box; 18. transport box; 19. feed funnel; 20. water spray pipe; 21. stirring blade; 22. stirring shaft; 23. feed blade; 24. feed shaft; 25. weight reduction structure. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0030] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0032] like Figure 1 or Figure 2 As shown, the utility model is a concrete mixer truck, comprising a vehicle body 8 and a transport box 18, wherein the transport box 18 is mounted on the vehicle body 8, a feed port is provided on the top of the transport box 18, and a discharge port is provided on the bottom, wherein the inner cavity of the transport box 18 is used to hold concrete; a stirring mechanism, wherein the stirring mechanism arranged in the transport box 18 is used to stir concrete; a feeding mechanism, wherein the feeding mechanism is arranged in the transport box 18, and the position of the feeding mechanism is lower than the stirring mechanism; and a water adding mechanism, wherein the water adding mechanism arranged in the transport box 18 is used to add water to the concrete.

[0033] The transport box 18 is a closed box structure, and the bottom of the transport box 18 is provided with a U-shaped surface that fits the feeding mechanism, and the space between the U-shaped surface and the inner wall of the transport box 18 is hollow. Figure 2 As shown, the transport box 18 of this embodiment is preferably an integrally formed box structure, and the feed port and the discharge port can also be closed or opened. Such a sealed structure can reduce the waste of concrete materials and environmental pollution, is safe, economical and environmentally friendly, and can effectively prevent the evaporation of concrete water and the entry of rainwater; Figure 3 As shown, a feeding mechanism is provided at the bottom of the transport box 18, and a U-shaped surface is provided at the bottom of each feeding mechanism. The length of the U-shaped surface is adapted to the length of the transport box 18. The U-shaped surface can better aggregate the mixed concrete to the feeding mechanism, so as to facilitate the discharge of the mixed concrete from the discharge port; Figure 3 As shown, multiple U-shaped surfaces and the space between the U-shaped surfaces and the inner wall of the transport box 18 are hollowed out. The hollowing out is a weight-reducing structure that can reduce the weight of the transport box 18 and reduce the pressure on the vehicle body 8. The top of the transport box 18 is provided with a feed hopper 19, and also includes a cover plate 1. One end of the cover plate 1 is movably connected to the feed hopper 19, and the other end is connected to the feed hydraulic cylinder 4 through a connecting rod. The feed hydraulic cylinder 4 drives the cover plate 1 to open and close the feed funnel 19. Figure 1 As shown, the feed funnel 19 is used for feeding concrete. The use of a funnel form can reduce leakage during feeding and improve feeding efficiency. At the same time, the size of the cover plate 1 is adapted to the feed funnel 19. The cover plate 1 is connected to the feed hydraulic cylinder 4 through a first connecting rod 2 and a second connecting rod 3 connected in sequence. This connecting rod structure can control the opening and closing of the cover plate 1 through the feed hydraulic cylinder 4 to avoid manual opening of the cover, thereby improving the safety factor of the operation.

[0034] The discharge port is provided with at least one discharge box 17, and the discharge box 17 is connected to a discharge plate 16, and the discharge plate 16 is connected to a discharge hydraulic cylinder 15, and the discharge hydraulic cylinder 15 drives the discharge plate 16 to open and close the discharge box 17. Figure 1 and Figure 2 As shown, the present embodiment is provided with two discharge boxes 17, and the discharge boxes 17 are arranged corresponding to the feeding mechanism. A U-shaped discharge plate 16 is connected to the bottom of the discharge box 17. The structure of the discharge plate 16 can make the concrete move in one direction, effectively avoiding leakage; the bottom of the discharge plate 16 is connected to one end of the discharge hydraulic cylinder 15, and the other end of the discharge hydraulic cylinder 15 is connected to the chassis support 14, and the chassis support 14 is connected to the vehicle body 8. The discharge hydraulic cylinder 15 controls the discharge plate 16 to be opened or closed, and the size of the opening of the discharge plate 16 is adjusted to control the unloading speed.

[0035] The stirring mechanism comprises at least one stirring shaft 22 connected to a driving device, and the stirring shaft 22 is provided with stirring blades 21 along the length direction. Figure 3 and Figure 4 As shown, in this embodiment, two groups of stirring shafts 22 are provided, but not limited to this, and multiple groups can be provided according to actual conditions. Both ends of the stirring shaft 22 are provided on the front and rear side walls of the transport box 18 through rolling bearings, and one end thereof passes through the side wall of the transport box 18 and is connected to the driving device. The stirring blades 21 provided on the stirring shaft 22 can accelerate the fusion of concrete and water.

[0036] The feeding mechanism comprises at least one set of feeding shafts 24 connected to the driving device, and the feeding shafts 24 are sleeved with feeding blades 23 along the length direction. Figure 3 and Figure 4 As shown, the feed shaft 24 of this embodiment is provided with two groups, but it is not limited thereto, and multiple groups may be provided according to actual conditions. Both ends of the feed shaft 24 are provided on the side wall of the transport box 18 through bearings, and one end thereof passes through the side wall of the transport box 18 and is connected to the driving device. The feed shaft 24 of this embodiment can be used for stirring or feeding, and the driving device is used to control the forward and reverse rotation of the feed shaft 24 to switch between stirring or feeding.

[0037] The driving device includes a reduction motor 6 mounted on the bracket 11, and the reduction motor 6 is rotatably connected to the stirring shaft 22 and the feeding shaft 24 through the gear 5. Figure 2 As shown, the present embodiment is provided with two groups of stirring mechanisms and two groups of feeding mechanisms, so four reduction motors 6 are provided correspondingly, and each reduction motor 6 is controlled separately, and the reduction motor 6 drives the rotating shaft or the feeding shaft 24 to rotate through the meshing gear 5.

[0038] The water adding mechanism comprises a water tank 7 and a water spray pipe 20, wherein the water spray pipe 20 is connected to the water tank 7 through a pipeline, wherein the water spray pipe 20 is also provided with a plurality of water spray valves, which are evenly spaced along the length direction of the water spray pipe 20, and the water spray valves are arranged to align with the stirring mechanism. Figure 1 and Figure 3 As shown, two groups of water spray pipes 20 are provided at the top of the transport box 18, and each group of water spray pipes 20 is provided with a plurality of water spray valves. When the concrete is mixed, water can be evenly added through the water spray valves for mixing. At the same time, after the concrete is discharged, water can be flushed into the transport box 18 to clean the inner wall of the transport box 18.

[0039] A shockproof pad is provided between the vehicle body 8 and the transport box 18. The shockproof pad can improve the risk of rollover and the influence of height limit, and the mixing transport box 18 is stationary, which greatly improves the stratification and segregation of concrete.

[0040] The vehicle body 8 is also provided with a fan 10 and a cooling water tank 9. Figure 2 As shown, a fan 10 is provided to reduce the temperature of the reduction motor 6, and a heat dissipation water tank 9 is provided as a backup to provide water when needed. A spare tire 13 is also provided at the bottom of the vehicle body 8 to prevent accidents. A fuel tank 12 is also provided at the bottom of the vehicle body 8 to refuel when it runs out of fuel during transportation.

[0041] When the device is used, during the feeding process of the concrete mixing station, the feed hydraulic cylinder 4 is contracted, and the cover plate 1 is opened through the connected first connecting rod 2 and second connecting rod 3 to add concrete; during the transportation process, the reduction motor 6 is used to control the stirring shaft 22 and the feeding shaft 24 to rotate simultaneously, and the stirring blades 21 and the feeding blades 23 are driven to stir the concrete respectively. During the mixing process, the rotation direction of the reduction motor 6 can be adjusted to adjust the forward and reverse directions of the stirring shaft 22 or the feeding shaft 24 to form different flow fields and improve the mixing uniformity. At the same time, water can be fed to the water spray pipe 20 through the water tank 7, and the water spray valve can be used to add water to the concrete for mixing.

[0042] During the discharging process of the mixed concrete, the reduction motor 6 controlling the stirring shaft 22 is turned off, and the discharging plate 16 is opened. The concrete flows out through the discharging plate 16. At the same time, the feed shaft 24 rotates, which can speed up the delivery of the concrete to the discharging port. After the discharging is completed, the water spray valve continues to work to clean the barrel. After cleaning, the feed shaft 24 is used to drain the accumulated water in the transport box 18.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A concrete mixer truck, comprising a vehicle body (8), characterized in that: It comprises a transport box (18), wherein the transport box (18) is installed on a vehicle body (8), a feed port is provided at the top of the transport box (18), and a discharge port is provided at the bottom, wherein the inner cavity of the transport box (18) is used to hold concrete; A mixing mechanism, the mixing mechanism arranged in the transport box (18) is used for mixing concrete; A material feeding mechanism, the material feeding mechanism being arranged in the transport box (18) and being located lower than the stirring mechanism; A water adding mechanism, which is arranged in the transport box (18) and is used to add water to the concrete; The bottom of the transport box (18) is provided with a U-shaped surface that fits the feeding mechanism, and a hollow space is provided between the U-shaped surface and the inner wall of the transport box (18); The feed port of the transport box (18) is provided with a feed hopper (19), and also includes a cover plate (1), one end of the cover plate (1) is movably connected to the feed hopper (19), and the other end is connected to the feed hydraulic cylinder (4) through a connecting rod, and the feed hydraulic cylinder (4) drives the cover plate (1) to open and close the feed funnel (19); The discharge port is provided with at least one discharge box (17), the discharge box (17) is connected to a discharge plate (16), the discharge plate (16) is connected to a discharge hydraulic cylinder (15), and the discharge hydraulic cylinder (15) drives the discharge plate (16) to open and close the discharge box (17).

2. A concrete mixer truck according to claim 1, characterized in that: The stirring mechanism comprises at least one stirring shaft (22) connected to a driving device, and the stirring shaft (22) is sleeved with stirring blades (21) along the length direction.

3. A concrete mixer truck according to claim 1, characterized in that: The material conveying mechanism comprises at least one set of material conveying shafts (24) connected to a driving device, and the material conveying shafts (24) are sleeved with material conveying blades (23) along the length direction.

4. A concrete mixer truck according to claim 2 or 3, characterized in that: The driving device comprises a reduction motor (6) mounted on a bracket (11), and the reduction motor (6) is rotationally connected to a stirring shaft (22) and a feeding shaft (24) respectively through gears (5).

5. A concrete mixer truck according to claim 1, characterized in that: The water adding mechanism comprises a water tank (7) and a water spray pipe (20), wherein the water spray pipe (20) is connected to the water tank (7) via a pipeline, wherein the water spray pipe (20) is further provided with a plurality of water spray valves, the plurality of water spray valves being distributed at equal intervals along the length direction of the water spray pipe (20), and the water spray valves being arranged to align with the stirring mechanism.

6. A concrete mixer truck according to claim 1, characterized in that: A shockproof gasket is provided between the vehicle body (8) and the transport box (18).

7. A concrete mixer truck according to claim 6, characterized in that: The vehicle body (8) is also provided with a fan (10) and a heat dissipation water tank (9).

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