A construction tipper

Abstract

The utility model provides a kind of dump truck for construction, including frame and the hydraulic tipping car hopper being installed on frame;The rear area of the hydraulic tipping car hopper is equipped with loose mechanism, and the loose mechanism includes servo motor, fixed shell, support bearing and support frame;The servo motor is installed in one side of fixed shell, and its output shaft is fixedly connected with main gear wheel.The utility model sets up loose mechanism in the tail of hydraulic tipping car hopper, and cooperates with the coordinated rotation of material guide cone rod and spiral auger shaft, so that the tail of car hopper generates forced pushing and stirring effect in the process of unloading, effectively solve the problem that the tail is accumulated and arch bridge is blocked when traditional dump truck transports earth materials due to strong adhesion and large frictional resistance, the loose mechanism can actively push material while car hopper is tilted, so that tail earth material is evenly loosened and pushed out, and the pitch angle of loose mechanism is controlled by tilting mechanism, so that unloading range is wider.

Description

Technical Field

[0001] This utility model relates to the field of construction equipment technology, and in particular to a dump truck for construction. Background Technology

[0002] In fields such as construction engineering, road construction, and ore transportation, dump trucks are the main equipment for transporting and unloading soil materials. They are widely used for transporting and unloading soil materials such as wet soil, clay, and sand.

[0003] Existing dump trucks typically use a hydraulic system to control the overall tilting of the dump truck to achieve gravity unloading of soil. However, during transportation and unloading, due to the strong cohesiveness and high frictional resistance of soil, when the tilt angle of the dump truck is insufficient or the soil moisture content is too high, the soil will accumulate or form an arch structure at the tail of the dump truck, making it difficult to slide out smoothly and resulting in incomplete unloading. Therefore, a dump truck for construction is proposed. Utility Model Content

[0004] In view of this, the present invention provides a construction dump truck to solve or alleviate the technical problems existing in the prior art, and at least provides a beneficial alternative.

[0005] The technical solution of this utility model is as follows: a construction dump truck, including a frame and a hydraulic dump truck mounted on the frame; The rear area of ​​the hydraulic tipper is provided with a loosening mechanism, which includes a servo motor, a fixed housing, a support bearing, and a support frame. The fixed housing is fixedly connected to one side of the support frame. The servo motor is installed on one side of the fixed housing, and its output shaft is fixedly connected to the main gear. The main gear meshes with three circumferentially distributed planetary gears. The planetary gears are meshed with an internal gear. The outer wall of the internal gear is rotatably mounted on the inner wall of the fixed housing through a support bearing. A spiral auger shaft is fixedly connected to the center of the main gear, and a rotating shaft is installed at the center of each planetary gear. Several guide cones are provided on the outer wall of each rotating shaft. A cover plate is bolted to one side of the fixed shell. Sealed bearings are installed on the cover plate and the support frame respectively, which are used to provide double-end support and sealing for the rotating shaft and the auger shaft. The support frame is rigidly hinged to one side of the vehicle frame.

[0006] The bottom of the vehicle frame is equipped with a tilting mechanism.

[0007] More preferably, the tilting mechanism includes a fixed arm and a hydraulic cylinder; The top of the fixed arm is fixedly connected to the lower part of the frame by bolts, and the cylinder body of the hydraulic cylinder is fixedly installed on the frame.

[0008] More preferably, a side guard plate is fixedly connected to the outer edge of the cover plate.

[0009] More preferably, both sides of the other end of the fixed arm are hinged with arc-shaped connecting rods, and the front ends of the two arc-shaped connecting rods are hinged to a drive rocker arm. The other end of the drive rocker arm is hinged to the outer wall of the side guard plate, and the piston rod end of the hydraulic cylinder is hinged to the front middle of the arc-shaped connecting rod. When the hydraulic cylinder extends, it drives the arc-shaped connecting rod to swing upward along the arc trajectory, which drives the drive rocker arm to generate an upward torque and adjusts the overall pitch angle of the loosening mechanism.

[0010] More preferably, the guide cone rod is composed of an arc-shaped section and a front-end tapered guide head.

[0011] The present invention has the following advantages due to the adoption of the above technical solution: This invention solves the problem of material accumulation and arching at the rear of a hydraulic tipper truck by setting a loosening mechanism at the tail of the tipper and coordinating the rotation of the guide cone and the auger shaft. This is achieved by forcibly pushing and dispersing the material at the tail of the tipper during unloading. The loosening mechanism actively pushes the material while the tipper is tilting, so that the soil at the tail is evenly loosened and pushed out. The tilting mechanism controls the pitch angle of the loosening mechanism, making the unloading range wider.

[0012] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a structural diagram of the present invention; Figure 2 This is an installation structure diagram of the loosening mechanism and tilting mechanism of this utility model; Figure 3 This is a structural diagram of the loosening mechanism of this utility model; Figure 4 This is a structural diagram of the tilting mechanism of this utility model.

[0015] Figure descriptions: 11. Frame; 12. Hydraulic tipper; 20. Loosening mechanism; 21. Servo motor; 22. Fixed housing; 23. Support bearing; 24. Cover plate; 25. Main gear; 26. Planetary gear; 27. Internal gear; 28. Rotary shaft; 29. ​​Spiral auger shaft; 211. Side guard plate; 212. Sealed bearing; 213. Guide cone rod; 214. Support frame; 30. Tilting mechanism; 31. Fixed arm; 32. Hydraulic cylinder; 33. Arc-shaped connecting rod; 34. Drive rocker arm. Detailed Implementation

[0016] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0017] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0018] like Figure 1-4 As shown, this utility model embodiment provides a construction dump truck, including a frame 11, a hydraulic dump bucket 12, a loosening mechanism 20 and a tilting mechanism 30; The frame 11 is the main load-bearing body. A hydraulic tipper 12 is installed on its top through a hinged fulcrum, and walking wheel sets are installed on both sides of the bottom to support the whole vehicle. The hydraulic tipper 12 adopts a dual-cylinder drive structure and can be tilted around the rear end of the frame to achieve large-angle unloading.

[0019] The loosening mechanism 20 is located in the rear area of ​​the hydraulic tipper 12 to assist the soil in being discharged smoothly during the tipping process; The fixed housing 22 is fixedly connected to one side of the support frame 214. The servo motor 21 is installed at one end of the fixed housing 22, and its output shaft is fixedly connected to the main gear 25. The main gear 25 meshes with three circumferentially distributed planetary gears 26. The outer side of the planetary gears 26 meshes with the inner gear 27. The outer wall of the inner gear 27 is rotatably installed on the inner wall of the fixed housing 22 through the support bearing 23. The center end of the main gear 25 is fixedly connected to the spiral auger shaft 29 to realize power transmission. A rotating shaft 28 is installed at the center of each planetary gear 26. The outer wall of the rotating shaft 28 is provided with several guide cones 213. The guide cones 213 have an arc-shaped structure and a conical guide head, which can generate soil diversion and loosening effect when the spiral shaft rotates, avoid soil accumulation at the rear end, and increase the loosening effect of the soil.

[0020] One side of the fixed housing 22 is connected to the cover plate 24 by bolts. Sealed bearings 212 are installed on the cover plate 24 and the support frame 214 respectively, forming double-end support and sealing protection for the rotating shaft 28 and the auger shaft 29 to prevent dust and particles from entering the gear cavity. The support frame 214 is hinged to one side of the frame 11 by a rigid hinge to ensure transmission stability. Side guard plates 211 are installed on the outer edge of the cover plate 24.

[0021] When the servo motor 21 starts, it drives the screw conveyor shaft 29 to rotate, so that the soil at the bottom of the bucket is forcibly pushed and discharged during the tipping process, achieving a continuous unloading effect.

[0022] The tilt mechanism 30 is located at the bottom of the frame 11 and is used to control the overall pitch attitude of the loosening mechanism 20; The tilting mechanism 30 includes a fixed arm 31 and a hydraulic cylinder 32. The fixed arm 31 is fixed to the lower part of the frame 11 by bolts. The piston rod end of the hydraulic cylinder 32 is hinged to the front middle of the arc-shaped connecting rod 33, serving as a mounting support for the hydraulic cylinder 32. The cylinder body of the hydraulic cylinder 32 is fixed on the frame 11. The front ends of the fixed arm 31 are connected to the arc-shaped connecting rod 33 and the drive rocker arm 34 to form an angle adjustment. When the hydraulic cylinder 32 extends, the arc-shaped connecting rod 33 swings along the arc trajectory, driving the rocker arm 34 to lift, thereby generating an auxiliary lifting torque for the loosening mechanism 20 and achieving more stable angle control.

[0023] The guide cone 213 adopts an integrated design of an arc-shaped rod body and a front-end conical guide head. During the rotation of the auger shaft 29, the guide cone 213 interacts with the soil, causing the soil to form a uniform spiral propulsion flow at the rear end of the hopper. This effectively prevents local clumping or stagnation, improves the unloading flowability, and its cone head structure can play a role in diverting and cutting, allowing the soil to be smoothly dispersed at the discharge port, thereby improving the overall unloading efficiency.

[0024] In this embodiment, both the hydraulic cylinder 32 and the servo motor 21 are under the unified control of the vehicle-mounted console. The operator can operate the hydraulic cylinder 32 and the servo motor 21 through the console.

[0025] When this utility model is in operation: the hydraulic tipper 12 is connected to the rear end of the frame 11 through the hinge point, and a hydraulic lifting cylinder is set at the front of it. After the hydraulic system is started, the cylinder pushes the front end of the tipper to rise, so that the tipper flips upward around the hinge point and forms a certain tilt angle. Under the action of gravity, the soil in the tipper begins to slide backward along the bottom of the tipper and enters the tail area of ​​the tipper.

[0026] Once the truck bed tilts to a predetermined angle, the loosening mechanism 20 is activated, and the servo motor 21 is powered on, driving the main gear 25 to rotate the fixedly connected auger shaft 29 at a uniform speed. The auger shaft 29 is located at the bottom of the rear of the truck bed, and its surface is covered with spiral blades. As the auger shaft 29 rotates, its spiral blades generate a spiral propulsion force on the soil in contact with it, forcibly conveying the soil accumulated at the rear of the truck bed backward. At the same time, multiple guide cones installed on the rotating shaft 28... The rod 213 rotates at a synchronous speed, and its front conical guide head forms a diversion and disturbance effect in the soil, breaking up the soil material that is concentrated and lumped together by pressure, reducing the cohesion between the soil materials, and the interaction between the guide cone rod 213 and the spiral blades of the auger shaft 29 forms a mixed shearing force, so that the soil material is pushed evenly and loosely to the outlet. The fixed shell 22 and the cover plate 24 of the loosening mechanism 20 form a closed cavity, and the rotating shaft 28 and the auger shaft 29 are supported and sealed inside by the sealing bearing 212 and the support bearing 23. When it is necessary to adjust the pitch angle of the loosening mechanism 20, the hydraulic cylinder 32 is activated. As the hydraulic cylinder 32 extends, it pushes the arc-shaped connecting rod 33 to swing upward around the hinge point of the fixed arm 31, thereby driving the drive rocker arm 34 to lift synchronously. Since one end of the drive rocker arm 34 is fixed to the side guard plate 211, the support frame 214 serves as the load-bearing support of the loosening mechanism 20 and is hinged to one side of the frame 11 through a rigid hinge. Under the driving action of the hydraulic cylinder 32, the support frame 214 rotates around its hinge point with the frame 11, causing the loosening mechanism 20 to pitch change as a whole, making the loosening mechanism 20 closer to the rear of the vehicle and the discharge end closer to the rear of the vehicle. Conversely, when the hydraulic cylinder 32 retracts, the arc-shaped connecting rod 33 swings down along the reverse arc, driving the drive rocker arm 34 to descend, and the loosening mechanism 20 tilts down and changes its angle accordingly, adjusting the loosening discharge according to the unloading height requirements.

[0027] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A dump truck for construction, characterized in that: Includes a frame (11) and a hydraulic tipper (12) mounted on the frame (11); The rear area of ​​the hydraulic tipper (12) is provided with a loosening mechanism (20), which includes a servo motor (21), a fixed shell (22), a support bearing (23), and a support frame (214). The fixed housing (22) is fixedly connected to one side of the support frame (214). The servo motor (21) is installed on one side of the fixed housing (22). Its output shaft is fixedly connected to the main gear (25). The main gear (25) meshes with three circumferentially distributed planetary gears (26). The planetary gears (26) are meshed with an internal gear (27). The outer wall of the internal gear (27) is rotatably mounted on the inner wall of the fixed housing (22) through a support bearing (23). A spiral auger shaft (29) is fixedly connected to the center of the main gear (25), and a rotating shaft (28) is installed at the center of each planetary gear (26). Several guide cones (213) are provided on the outer wall of the rotating shaft (28). A cover plate (24) is bolted to one side of the fixed shell (22). Sealed bearings (212) are respectively installed on the cover plate (24) and the support frame (214) for double-end support and sealing of the rotating shaft (28) and the spiral auger shaft (29). The support frame (214) is rigidly hinged to one side of the frame (11). The bottom of the frame (11) is equipped with a tilting mechanism (30).

2. A construction dump truck according to claim 1, characterized in that: The tilting mechanism (30) includes a fixed arm (31) and a hydraulic cylinder (32); The top of the fixed arm (31) is fixedly connected to the lower part of the frame (11) by bolts, and the cylinder body of the hydraulic cylinder (32) is fixedly installed on the frame (11).

3. A construction dump truck according to claim 2, characterized in that: The outer edge of the cover plate (24) is fixedly connected to a side guard plate (211).

4. A construction dump truck according to claim 3, characterized in that: Both sides of the other end of the fixed arm (31) are hinged with arc-shaped connecting rods (33), and the front ends of the two arc-shaped connecting rods (33) are hinged together with a drive rocker arm (34). The other end of the drive rocker arm (34) is hinged to the outer wall of the side guard plate (211), and the piston rod end of the hydraulic cylinder (32) is hinged to the front middle of the arc-shaped connecting rod (33). When the hydraulic cylinder (32) extends, it drives the arc-shaped connecting rod (33) to swing upward along the arc trajectory, which drives the drive rocker arm (34) to generate an upward torque and adjust the overall pitch angle of the loosening mechanism (20).

5. A construction dump truck according to claim 1, characterized in that: The guide cone (213) consists of an arc-shaped section and a front-end tapered guide head.

Images