Dump truck unloading aggregate separation prevention device for roller compacted concrete construction
By installing a material guiding component at the rear of the dump truck bed, the unloading path is extended, solving the problem of aggregate segregation caused by excessive height difference, improving the uniformity of concrete and project quality, and simplifying the construction process.
Patent Information
- Application Number
- CN202520712675.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-16
- Publication Date
- 2026-03-17
- Estimated Expiration
- 2035-04-16
AI Technical Summary
In the construction of roller-compacted concrete in water conservancy and hydropower projects, aggregate segregation caused by excessive height difference during the unloading process of dump trucks affects the uniformity of concrete and the quality of the project.
Installing material guiding components, such as swing plates or guide plates, at the rear of the dump truck bed can extend the unloading path, reduce the unloading height difference, and prevent aggregate segregation.
It effectively prevents aggregate segregation, improves the uniformity and construction quality of concrete, simplifies construction procedures, reduces costs, and is suitable for various water conservancy and hydropower engineering scenarios.
Smart Images
Figure CN223999410U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of concrete construction technology, and in particular to a dump truck unloading device for preventing aggregate separation in roller compacted concrete construction. Background Technology
[0002] In roller-compacted concrete (RCC) construction for water conservancy and hydropower projects, dump trucks are commonly used for unloading. However, due to the high unloading height of dump trucks, the large drop during the dumping process of three-graded RCC concrete easily leads to aggregate segregation. Aggregate segregation reduces the uniformity of the concrete, affecting its density and strength, and consequently impacting the project quality.
[0003] Currently, common solutions include: 1) reducing the unloading height of dump trucks, but this is difficult to achieve due to vehicle structure and construction conditions; 2) setting up buffer devices at the unloading point, but this increases construction complexity and cost; 3) using manual intervention, such as using tools to disperse aggregates, but this is inefficient and has limited effect. Utility Model Content
[0004] The purpose of this invention is to solve the problem of aggregate separation caused by excessive height difference during the unloading process of dump trucks in roller compacted concrete construction, and to propose an aggregate separation prevention device for dump trucks in roller compacted concrete construction.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A dump truck unloading device for preventing aggregate separation in roller compacted concrete construction includes: a material guiding component assembled at the rear of the truck bed to reduce the unloading height difference.
[0007] In some embodiments, the material guiding assembly is a swing plate hinged to the rear end of the carriage.
[0008] In some embodiments, the lower end of the swing plate is provided with a chain connecting it to the vehicle frame.
[0009] In some embodiments, a hinge seat is provided on the inner side of the lower end of the swing plate and is rotatably assembled with the rear end of the carriage; a pin seat is provided above the hinge seat to connect one end of the chain.
[0010] In some embodiments, the swing plate is provided with self-adjusting baffles near both ends.
[0011] In some embodiments, the flange is triangular; the flange is fitted to the swing plate near its top.
[0012] In some embodiments, the two ends of the swing plate are provided with inward folding stops.
[0013] In some embodiments, the material guiding assembly is a material guiding plate mounted at the rear of the carriage and extending rearward.
[0014] In some embodiments, a sill is provided at the tail end of the guide plate.
[0015] In some embodiments, an extension plate is slidably disposed at the lower end of the guide plate.
[0016] Compared with the prior art, this utility model provides a dump truck unloading device to prevent aggregate separation in roller compacted concrete construction, which has the following beneficial effects.
[0017] 1. This utility model effectively prevents aggregate segregation: By adding this device, the discharge height difference is reduced, which significantly reduces the aggregate segregation phenomenon in three-grade roller-compacted concrete and improves the uniformity of concrete.
[0018] 2. This utility model improves construction quality by avoiding the impact of aggregate separation on the density and strength of roller-compacted concrete, thus ensuring project quality.
[0019] 3. This utility model is easy to operate: the device has a simple structure and is easy to operate, requiring no additional manual intervention.
[0020] 4. This utility model has a wide range of applications: it is applicable to various water conservancy and hydropower engineering roller-compacted concrete construction scenarios and has broad application value.
[0021] Other advantages, objectives and features of this invention will be set forth in part in the description which follows; and in part will be apparent to those skilled in the art upon examination of the following description; or may be taught by practice of this invention. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the transportation status in Example 1.
[0023] Figure 2 This is a partial enlarged view of the transportation status in Example 1.
[0024] Figure 3 This is a schematic diagram of the unloading state in Example 1.
[0025] Figure 4 This is a partially enlarged schematic diagram of the unloading state in Example 1.
[0026] Figure 5 This is a schematic diagram of the transportation status in Example 2.
[0027] Figure 6 This is a partial enlarged view of the transportation status in Example 2.
[0028] Figure 7 This is a schematic diagram of the unloading state in Example 2.
[0029] Figure 8 This is a partially enlarged view of the unloading state in Example 2.
[0030] Figure 9 This is a schematic diagram of the transportation status in Example 3.
[0031] Figure 10 This is a partial enlarged view of the transportation status in Example 3.
[0032] Figure 11 This is a schematic diagram of the unloading state in Example 3.
[0033] Figure 12 This is a partially enlarged view of the unloading state in Example 3.
[0034] Figure 13 This is a schematic diagram of the second structure of the swing plate.
[0035] Figure 14 This is a rear view of the second structure of the swing plate.
[0036] Figure 15 This is a side view of the second structure of the swing plate.
[0037] Figure 16 This is a schematic diagram of the second structure of the oscillating plate in the unloading state.
[0038] Figure 17 This is a side view of the second structure of the oscillating plate in the unloading state.
[0039] Figure 18 This is a schematic diagram of the third structure of the swing plate.
[0040] Figure 19 This is a schematic diagram of the guide plate.
[0041] Figure 20 This is a schematic diagram of the lower structure of the guide plate.
[0042] Figure 21 This is a schematic diagram of the second structure of the guide plate.
[0043] Figure 22 This is a side view of the second structure of the guide plate.
[0044] Figure 23 This is a schematic diagram of the third structure of the guide plate.
[0045] Figure 24 This is a diagram showing the extended state of the third structure of the guide plate.
[0046] Figure 25 This is a lower view of the third structure of the guide plate.
[0047] Figure 26 for Figure 25 A magnified structural diagram of point A in the middle.
[0048] Figure 27 This is a schematic diagram of the transportation status in Example 5.
[0049] Figure 28 This is a schematic diagram of the unloading state in Example 5.
[0050] In the picture:
[0051] 1. Swing plate; 11. Inner folding stop; 2. Chain; 3. Hinge seat; 31. Pin seat; 4. Edge stop; 5. Guide plate; 51. Panel; 52. Connecting rod; 53. Baffle; 54. Cantilever; 6. Extension plate; 61. Slide rod; 62. Slide rail. Detailed Implementation
[0052] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0053] Reference Figure 1-28 A dump truck unloading device for preventing aggregate separation during roller compacted concrete construction includes: a material guiding component mounted at the rear of the truck bed to reduce the unloading height difference; the material guiding component forms an extended unloading guide path to reduce the unloading height difference, thereby effectively solving the problem of aggregate separation in roller compacted concrete during unloading.
[0054] Example 1.
[0055] Reference Figure 1-4 The material guiding component is a swing plate 1 hinged to the rear end of the carriage.
[0056] like Figure 1 , 2 As shown, during transportation, when the truck bed is in a horizontal position, the swing plate 1 is in a retracted state, pressing against the outside of the truck bed door and locking the door, without affecting the normal driving and loading of the dump truck.
[0057] like Figure 3 , 4 As shown, during the unloading process, when the truck body is in an overturned state, the swing plate 1 swings backward, releasing the lower end of the truck body door and forming an extended material guiding structure; guiding the concrete to the unloading point and further reducing the unloading height difference.
[0058] exist Figure 3 , 4 In the state shown, the swing plate 1 is closer to the ground than the rear end of the carriage; the concrete flows to the unloading point through the swing plate 1, which can significantly avoid aggregate segregation.
[0059] Preferably, the swing plate 1 is assembled via a hinged connection structure of the carriage door claw.
[0060] It is understandable that a door claw mounting structure is provided at the lower end of the rear of the carriage; the swing plate 1 is assembled using the existing door claw hinge connection structure; thus, the swing plate 1 can replace the door claw to limit the locking or unlocking of the carriage door.
[0061] Correspondingly, the lower end of the swing plate 1 is provided with a chain 2 connected to the vehicle frame; and the connection point between the chain and the swing plate 1 is located above the "hinged position between the swing plate 1 and the rear end of the vehicle body" (the vertical height position when retracted).
[0062] During transportation, chain 2 is taut, pulling swing plate 1 to swing inward; during unloading, chain 2 loosens, and swing plate 1 swings outward under the action of gravity.
[0063] like Figure 2 As shown; during transportation, the entire carriage is in a horizontal state; the distance between the rear end of the carriage and the chain fixing point of the rear end of the beam is large, the chain 2 is taut, pulling the swing plate 1 to stick to the carriage door.
[0064] like Figure 4 As shown; during unloading, the front end of the carriage is raised, the distance between the rear end of the carriage and the chain fixing point of the rear end of the beam is reduced, the chain 2 becomes loose and no longer exerts tension on the swing plate 1; at the same time, the swing plate 1 swings backward and opens under the action of gravity, forming a guiding structure for the concrete material, and the concrete slides off its surface, reducing the height difference.
[0065] In the specific structural configuration: a hinge seat 3 is provided on the inner side of the lower end of the swing plate 1 and rotates and assembles with the rear end of the carriage; a pin seat 31 is provided above the hinge seat 3 to connect one end of the chain 2.
[0066] It should be noted that the lower inner side of the swing plate 1 abuts against the lower end of the carriage or the hinged connection structure of the door claw; limiting the rotation amplitude of the swing plate 1 and forming an effective material guiding path.
[0067] During unloading: As the truck body is lifted and tilted, the distance between the rear end of the truck body and the chain fixing point at the rear end of the dump truck beam decreases, the chain 2 pulling the swing plate 1 naturally loosens, the swing plate 1 opens, the unloading path is extended, and the unloading height difference is reduced; when the guide plate is fully opened, the lower extended part of the swing plate 1 presses against the truck body structure to prevent the swing plate 1 from opening too much and losing its guiding function.
[0068] After unloading: As the truck bed gradually returns to a horizontal position, the distance between the rear end of the truck bed and the chain fixing point at the rear end of the dump truck beam increases, and the chain 2 pulling the swing plate 1 naturally tightens, pulling up the swing plate 1 and locking the truck bed door.
[0069] Furthermore, reinforcing ribs are provided on the rear side of the swing plate 1 to prevent the guide plate from deforming and being damaged.
[0070] Additionally, the swing plate 1 can also be directly welded to the car door claw; the swing plate 1 and the door claw are integrated into a single structure and installed at the original car door claw location. In this case, attention needs to be paid to the fit between the swing plate 1 and the car door; preferably, a door claw locking position is formed by cutting at the corresponding position of the swing plate 1 and the door claw; then, the swing plate 1 is welded to the door claw, with the front end of the swing plate 1 and the door claw structure on the same surface, and attached to the car door.
[0071] Furthermore, such as Figure 13-17 As shown;
[0072] The swing plate 1 is provided with self-adjusting retaining edges 4 near both ends.
[0073] This creates barriers on both sides, reducing the outflow of concrete from the sides.
[0074] Preferably, the stop 4 is triangular; the stop 4 is assembled with the swing plate 1 near the top by a pin; correspondingly, the swing plate 1 has an elongated groove through which the swing plate 1 swings.
[0075] During transportation, the retaining edge 4 is subjected to pressure from the carriage door, causing its lower end to swing backward without affecting the locking mechanism of the swing plate 1 to the carriage door. During unloading, the swing plate 1 swings downward as a whole; due to the influence of gravity, the retaining edge 4 will swing downward; in order to overcome this state, a force-applying structure for the retaining edge 4 is provided accordingly.
[0076] Preferably, a torsion spring, spring steel bar, or similar structure is provided at the assembly position of the retaining flange 4 to apply an inward swinging force to the retaining flange 4; during unloading, the retaining flange 4 is pushed to form... Figure 16 The state shown.
[0077] Understandably, a limiting structure is also required; for example, a protruding structure is provided at the lower outer end of the stop 4; the protruding structure is larger than the width of the long strip groove on the swing plate 1, so as to limit the swing amplitude under the applied force.
[0078] In some other embodiments, unlike the aforementioned state, the swing plate 1 is provided with inner folding blocks 11 at both ends to form side blocks; at the same time, the swing plate 1 and the inner folding blocks 11 form a chute to ensure that the aggregate is not excessively dispersed during unloading, and further prevent segregation.
[0079] like Figure 18 As shown; inner folding blocks 11 are hinged at both ends of the swing plate 1; at the same time, torsion springs, spring steel bars and other structures are set to apply an inward folding force to the inner folding blocks 11; and the angle between the inner folding blocks 11 and the swing plate 1 is controlled to be greater than 90 degrees.
[0080] During unloading, the inner folding blocks 11 on both sides form a retaining edge; when the swing plate 1 is retracted, the inner folding blocks 11 swing outward under the pressure of the car door, without affecting the lock of the swing plate 1 on the car door.
[0081] When doing homework:
[0082] 1) Install a swing plate at the rear of the dump truck bed;
[0083] 2) After the dump truck is loaded, it drives to the unloading point; as the truck bed is raised and tilted, the swing plate opens;
[0084] 3) Start unloading. The concrete flows to the unloading point through the swing plate to avoid aggregate segregation caused by excessive height difference;
[0085] 4) After unloading is completed, as the truck bed gradually returns to a horizontal state, the swing plate is pulled up, locking the truck bed door, and the dump truck drives away from the unloading point.
[0086] Example 2.
[0087] like Figure 5-8 As shown in 19-20, the difference from the aforementioned embodiments is:
[0088] The material guiding assembly is: a material guiding plate 5 that is installed at the rear of the carriage and extends rearward.
[0089] Thus, the outer edge with a fixed shape is directly formed by the guide plate 5; such as Figure 8 As shown, the guide plate 5 guides the concrete material to fall, reducing its height.
[0090] It should be noted that the length of the guide plate 5 should be reasonably controlled; while effectively reducing the drop height, it should not cause excessive changes to the vehicle body; preferably, the guide plate 5 extends 500mm beyond the rear of the vehicle.
[0091] Specifically, the guide plate 5 includes a panel 51 and a frame supporting the panel 51, which has reliable strength. Meanwhile, multiple connecting rods 52 are provided on each side of the guide plate 5 for assembly and connection with the carriage.
[0092] Preferably, the connecting rod 52 is installed and fixed to the carriage by welding or bolting.
[0093] It should be noted that the front end of the guide plate 5 fits against the rear of the carriage to prevent material leakage; at the same time, the front end of the guide plate 5 has a notch to avoid the carriage door claws, ensuring that the door claws can open smoothly.
[0094] Furthermore, baffles 53 are provided on both sides of the guide plate 5.
[0095] During unloading, the guide plate 5 and the baffle 53 form a chute to ensure that the aggregate is not excessively dispersed during unloading, and further prevent segregation.
[0096] Before unloading: The guide plate 5 is installed at the rear of the dump truck bed, which does not affect the normal driving and loading of the dump truck; due to the extension, the driver needs to pay more attention to driving safety during the driving process.
[0097] During unloading: the guide plate 5 extends the concrete discharge path, effectively reducing the concrete discharge height difference; the guide plate 5 and the baffle 53 form a chute. After the dump truck body is lifted, the truck body door is opened, and the concrete falls down the chute to the designated unloading point.
[0098] When doing homework:
[0099] 1) Install the material guiding assembly at the rear of the dump truck's cargo box;
[0100] 2) After the dump truck finishes loading, it drives to the unloading point. As the truck bed is lifted and tilted, the truck bed door opens and unloading begins. The concrete flows to the unloading point through the material guiding component to avoid aggregate segregation caused by excessive height difference or excessive discharge speed.
[0101] 3) After unloading is completed, as the truck bed gradually returns to a horizontal position, the doors close and the dump truck drives away from the unloading point.
[0102] Example 3.
[0103] like Figure 9-12 As shown in Figures 21-22, the difference from the previous embodiment is that the tail end of the guide plate 5 is provided with a pick-up bar 54.
[0104] Preferably, the height of the sill 54 is set to 50~70mm.
[0105] Further preferred, the height of the sill 54 is set to 60mm.
[0106] By forming a 60mm high sill at the tail end of the guide plate 5, a buffer is formed during unloading, which can reduce the concrete discharge speed and further prevent segregation.
[0107] During unloading: The sill 54 at the end of the guide plate 5 effectively reduces the falling speed of concrete and prevents aggregate segregation caused by the impact force from excessive falling speed.
[0108] Example 4.
[0109] like Figure 23-26 As shown, unlike the previous embodiment, the lower end of the guide plate 5 is slidably provided with an extension plate 6.
[0110] The extension plate 6 has a first form that is housed at the lower end of the guide plate 5, and a second form that is slid outward to form an extension.
[0111] During transportation, extension panel 6 is retracted into the interior; as... Figure 23 As shown, the overall length is not large.
[0112] During the unloading process, the extension plate 6 is moved outward to increase the guide surface and further reduce the height difference.
[0113] It should be noted that the extension plate 6 can be moved manually or equipped with a drive component (such as an electric telescopic rod, lead screw, etc.).
[0114] Preferably, select manual mode; such as Figure 25 , 26 As shown, the lower end of the extension plate 6 is fixedly provided with a slide rod 61 that extends through to the lower end of the guide plate 5; the lower end of the guide plate 5 is provided with a matching slide rail 62 (extending through to the lower end of the frame of the support panel 51); at the same time, the lower section of the slide rod 61 is threaded and fitted with a nut for locking or adjusting the position of the extension plate 6.
[0115] Example 5.
[0116] like Figure 27-28 As shown; similar to the scheme in Embodiment 4, in this embodiment, an extension plate 6 is slidably provided on the rear side of the swing plate 1.
[0117] Specifically, a guide and limiting structure is set on the rear side of the swing plate 1 in conjunction with the extension plate 6, and the extension plate 6 slides through the guide structure. During transportation, the extension plate 6 automatically retracts under the action of gravity; during unloading, the swing plate 1 is in an inclined state, and the extension plate 6 slides out under the action of gravity; it is understandable that the limiting mechanism is set to prevent excessive sliding out.
[0118] For example, multiple guide openings are made on the extension plate 6; a limiting rod is fixedly installed on the rear side of the swing plate 1 near the top; for example Figure 27 As shown, during transport, the extension plate 6 slides downwards; as Figure 28 As shown, during unloading, the extension plate 6 slides outward and is blocked by the limit rod to maintain a suitable extension length.
[0119] Preferably, the limiting rod is a screw and a nut is installed; the nut can be controlled to lock, so that the extension plate 6 is in a non-slip locked state.
[0120] A method for preventing aggregate segregation during dump truck unloading in roller compacted concrete construction, based on the aforementioned apparatus, includes the following steps;
[0121] S1. Install a material guiding assembly at the rear of the carriage;
[0122] S2. During the unloading process, the unloading height difference of concrete is reduced by the material guiding component to avoid aggregate segregation caused by excessive height difference.
[0123] In this invention, by adding a material guiding component to the rear of the dump truck bed, the material discharge path is extended, the discharge height difference is reduced, and aggregate segregation is avoided; the uniformity and construction quality of roller-compacted concrete are improved; the construction process is simplified, and the construction cost is reduced.
[0124] Compared with the prior art, the present invention has at least the following advantages:
[0125] 1) Effectively prevents aggregate segregation: By installing this device, the discharge height difference is reduced, which significantly reduces the aggregate segregation phenomenon in three-grade roller-compacted concrete and improves the uniformity of concrete.
[0126] 2) Improved construction quality: It avoided the impact of aggregate segregation on the density and strength of roller-compacted concrete, thus ensuring the quality of the project;
[0127] 3) Easy to operate: The device has a simple structure and is easy to operate, requiring no additional manual intervention;
[0128] 4) Wide range of applications: Applicable to various water conservancy and hydropower engineering roller-compacted concrete construction scenarios, and has broad application value;
[0129] 5) It has good value for promotion and application.
[0130] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
[0131] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
Claims
1. A self-dumping truck discharge anti-segregation device for roller compacted concrete construction, characterized in that, The utility model relates to a truck tail end material guiding assembly and a truck tail end material guiding assembly. The utility model discloses a truck tail end material guiding assembly and a truck tail end material guiding assembly. The lower end of the swing plate (1) is provided with a lock chain (2) connected to the automobile beam.
2. The aggregate separation preventing device for discharging of a self-dumper for roller compacted concrete construction according to claim 1, characterized in that, The lower end of the swing plate (1) is provided with a hinge seat (3) rotatably connected to the tail end of the carriage.
3. The aggregate separation preventing device for discharging of a self-dumper for roller compacted concrete construction according to claim 2, characterized in that, The swing plate (1) is provided with a self-adjusting blocking edge (4) near the two ends.
4. The aggregate separation preventing device for discharging of a self-dumper for roller compacted concrete construction according to claim 1, characterized in that, The blocking edge (4) is triangular, and the blocking edge (4) is connected to the swing plate (1) near the top end.
5. The aggregate separation preventing device for discharging of a self-dumper for roller compacted concrete construction according to claim 4, characterized in that, The two ends of the swing plate (1) are provided with an inward folding block (11).
6. The aggregate separation preventing device for discharging of a self-dumper for roller compacted concrete construction according to claim 1, characterized by, The tail end of the material guiding plate (5) is provided with a pick (54).
7. The aggregate separation preventing device for discharging of a self-dumper for roller compacted concrete construction according to claim 1, characterized in that, The lower end of the material guiding plate (5) is provided with an extension plate (6).
8. The aggregate separation preventing device for discharging of a self-dumper for roller compacted concrete construction according to claim 1, characterized by,