Lifting mechanism for dumper

Abstract

The utility model relates to the technical field of dump trucks, and discloses a lifting mechanism for a dump truck, which comprises a truck head, a truck body is fixedly mounted below the right side of the truck head, a lifting component is arranged above the truck body, a truck hopper is arranged above the lifting component, the lifting component comprises a support frame, and the support frame is fixedly connected with the truck body. The bottom of the supporting frame is fixedly installed on the top of the vehicle body. Through cooperation of the supporting frame, the hydraulic cylinder, the push rod, the idler wheels and the guide grooves, the bottom ends of the two connecting frames are conveniently driven to move, the top ends of the two connecting frames are matched through the hinges to synchronously drive the two sides in front of the car hopper to be jacked upwards, and the bottom of the other side of the car hopper drives the supporting frame to rotate on the outer walls of the connecting rods. Therefore, double-side lifting of the front portion of the car hopper can be achieved through the single hydraulic cylinder, the stability of the car hopper during lifting can be improved, and the situation that the synchronism of two hydraulic cylinders is difficult to guarantee due to the fact that the two hydraulic cylinders are used is avoided.

Description

Technical Field

[0001] This utility model relates to the field of dump truck technology, and more specifically to a lifting mechanism for dump trucks. Background Technology

[0002] A dump truck is a vehicle that unloads goods automatically using hydraulic or mechanical lifting; it is also known as a tipper truck. It is mainly used for loading and unloading cargo such as earth, sand, gravel, and bulk materials. It consists of a truck chassis, a hydraulic lifting mechanism, a cargo box, and a power take-off unit. Through its hydraulic or mechanical lifting mechanism, the dump truck's cargo box can tilt at a certain angle, enabling automatic unloading of goods.

[0003] Currently, dump trucks typically use a single hydraulic cylinder to lift the truck from the middle of one side of the bottom of the bed. Since the lifting force is concentrated in the middle of one side of the frame, uneven loading of cargo or tilted ground can cause the center of gravity of the bed to shift, increasing the probability of tipping over. If two hydraulic cylinders are used to lift the truck from both sides from the front, although the stability of the vehicle during lifting can be improved, it is difficult to control the synchronization of the two hydraulic cylinders, which will also affect the smoothness of the lifting. This needs to be improved. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a lifting mechanism for dump trucks to solve the problems existing in the background art.

[0005] This utility model provides the following technical solution: a lifting mechanism for a dump truck, including a truck head, a vehicle body fixedly installed on the lower right side of the truck head, a lifting assembly provided on the upper part of the vehicle body, a truck bed provided on the upper part of the lifting assembly, the lifting assembly including a support frame, the bottom of the support frame fixedly installed on the top of the vehicle body, the bottom of the truck bed overlapping the top of the support frame, a hydraulic cylinder fixedly installed in the middle of the right side of the inner wall of the support frame, a push rod provided on the right side inside the support frame, the telescopic end of the hydraulic cylinder fixedly installed in the middle of the right side of the push rod, guide grooves symmetrically opened on the front and rear sides of the support frame, the front and rear ends of the push rod extending to the front and rear sides of the support frame through the guide grooves, two connecting frames symmetrically provided on the front and rear sides of the truck bed, the bottom ends of the two connecting frames rotatably installed on the front and rear ends of the outer wall of the push rod through bearings, two guide rods symmetrically provided inside the support frame, the two ends of the two guide rods fixedly installed on the left and right sides of the inner wall of the support frame;

[0006] Furthermore, hinges are fixedly installed at the front ends of the front and rear sides of the connecting frame, and the top ends of the two connecting frames are installed on one side of the hinges. The top ends of the two connecting frames are hinged to the truck bed through the hinges.

[0007] Furthermore, a roller is rotatably mounted on the outer wall of the push rod via a bearing, and the outer wall of the roller is rolled inside the guide groove.

[0008] Furthermore, the push rod is internally fixedly fitted with two guide covers, and the interiors of the two guide covers are movably fitted onto the outer walls of the two guide rods.

[0009] Furthermore, the guide cover has multiple balls rotatably embedded inside, and the outer walls of the balls are rolled on the outer wall of the guide rod.

[0010] Furthermore, an installation groove is provided on the upper right side of the support frame, and a connecting rod is fixedly connected inside the installation groove. A support frame is fixedly connected to one side of the bottom of the truck bed, and the lower part of the inside of the support frame is rotatably mounted on the outer wall of the connecting rod.

[0011] The technical effects and advantages of this utility model are as follows:

[0012] 1. This utility model, through the cooperation of a support frame, hydraulic cylinder, push rod, roller, and guide groove, facilitates the movement of the bottom ends of the two connecting frames. The top ends of the two connecting frames, through the cooperation of hinges, synchronously drive the two sides of the front of the truck bed to lift upwards. The bottom of the other side of the truck bed also drives the support frame to rotate on the outer wall of the connecting rod. Thus, the front of the truck bed can be lifted on both sides with a single hydraulic cylinder, which not only improves the stability of the truck bed during lifting but also avoids the situation where it is difficult to ensure the synchronization of the two hydraulic cylinders when using two hydraulic cylinders.

[0013] 2. This utility model uses two guide covers and guide rods to facilitate horizontal guidance of the push rod. The ball bearings prevent sliding wear between the guide covers and guide rods, ensuring the stability of both ends of the push rod during movement. Thus, the push rod can simultaneously push the two connecting frames to move. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the overall structure of this utility model from another perspective.

[0016] Figure 3 This is a schematic diagram of the lifting component structure of this utility model.

[0017] Figure 4 This is a cross-sectional schematic diagram of the support frame structure of this utility model.

[0018] Figure 5 This is a schematic diagram of the connecting rod and support frame structure of this utility model.

[0019] Figure 6This is a cross-sectional schematic diagram of the guide cover structure of this utility model.

[0020] The attached figures are labeled as follows: 1. Front of vehicle; 2. Vehicle body; 3. Lifting assembly; 4. Truck bed; 5. Mounting slot; 6. Connecting rod; 7. Support frame; 31. Support frame; 32. Hydraulic cylinder; 33. Push rod; 34. Roller; 35. Guide slot; 36. Connecting frame; 361. Hinge; 37. Guide cover; 371. Ball bearing; 38. Guide rod. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The lifting mechanism for dump trucks involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Example 1:

[0023] like Figure 1-6 As shown, a lifting mechanism for a dump truck includes a cab 1, a body 2 fixedly mounted on the lower right side of the cab 1, a lifting assembly 3 on top of the body 2, and a truck bed 4 on top of the lifting assembly 3. The lifting assembly 3 includes a support frame 31, the bottom of which is fixedly mounted on the top of the body 2. The bottom of the truck bed 4 overlaps the top of the support frame 31. A hydraulic cylinder 32 is fixedly mounted on the middle of the right side of the inner wall of the support frame 31. A push rod 33 is located on the right side inside the support frame 31. The telescopic end of the hydraulic cylinder 32 is fixedly mounted on the middle of the right side of the push rod 33. Guide grooves 35 are symmetrically provided on the front and rear sides of the support frame 31. The front and rear ends of the push rod 33 extend to the front and rear sides of the support frame 31 through the guide grooves 35. The front of the truck bed 4... Two connecting frames 36 are symmetrically arranged on the rear two sides. The bottom ends of the two connecting frames 36 are rotatably mounted on the front and rear ends of the outer wall of the push rod 33 via bearings. The front ends of the front and rear sides of the connecting frames 36 are fixedly mounted with hinges 361. The top ends of the two connecting frames 36 are mounted on one side of the hinges 361. The top ends of the two connecting frames 36 are hinged to the truck bed 4 via the hinges 361. Rollers 34 are rotatably mounted on the outer wall of the push rod 33 via bearings. The outer wall of the rollers 34 is rolled inside the guide groove 35. An installation groove 5 is opened on the upper right side of the support frame 31. A connecting rod 6 is fixedly connected inside the installation groove 5. A support frame 7 is fixedly connected to one side of the bottom of the truck bed 4. The lower part of the inside of the support frame 7 is rotatably mounted on the outer wall of the connecting rod 6.

[0024] In this embodiment, a single hydraulic cylinder 32 can push the push rod 33 to move. The push rod 33 drives two rollers 34 to roll inside two guide grooves 35 via bearings. The rollers 34 and guide grooves 35 facilitate the initial horizontal guidance of both ends of the push rod 33. At the same time, the two ends of the push rod 33 drive the bottom ends of the two connecting frames 36 to move via bearings. The top ends of the two connecting frames 36 drive the two sides of the front of the truck bed 4 to lift upwards via hinges 361. At this time, the bottom of the other side of the truck bed 4 drives the support frame 7 to rotate around the connecting rod 6. Thus, the front of the truck bed 4 can be lifted on both sides by a single hydraulic cylinder 32, improving the stability of the truck bed 4 during lifting.

[0025] Example 2:

[0026] like Figure 1-6 As shown, two guide rods 38 are symmetrically arranged inside the support frame 31. The two ends of the two guide rods 38 are fixedly installed on the left and right sides of the inner wall of the support frame 31. Two guide covers 37 are fixedly sleeved inside the push rod 33. The interior of the two guide covers 37 is movably sleeved on the outer wall of the two guide rods 38. Multiple balls 371 are rotatably embedded inside the guide covers 37. The outer wall of the balls 371 is rolled on the outer wall of the guide rods 38.

[0027] In this embodiment, as the push rod 33 moves, it can drive the two guide covers 37 to move outside the two guide rods 38. The guide covers 37 drive multiple balls 371 to roll on the outer wall of the guide rods 38. The rolling of the balls 371 can prevent sliding wear between the guide covers 37 and the guide rods 38, thereby guiding the push rod 33 horizontally and maintaining the stability of both ends of the push rod 33 when it moves. This makes it convenient to use the push rod 33 to simultaneously push the two connecting frames 36 to move and lift the truck bed.

[0028] In summary, as Figure 1-6 As shown, this lifting mechanism for a dump truck, in use, pushes the push rod 33 to move through the telescopic end of the hydraulic cylinder 32. The push rod 33 is guided by two guide covers 37 that drive the balls 371 to roll on the outer wall of the guide rod 38. The two ends of the push rod 33 drive two rollers 34 to roll horizontally inside the two guide grooves 35 through bearings. While the push rod 33 is moving, it drives the bottom ends of the two connecting frames 36 to move through the bearings. The top ends of the two connecting frames 36 drive the two sides in front of the truck bed 4 to lift upward through the hinges 361. At this time, the other side of the bottom of the truck bed 4 drives the support frame 7 to rotate on the outer wall of the connecting rod 6, so that the front of the truck bed 4 can be lifted on both sides.

[0029] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0030] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0031] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lifting mechanism for a dump truck, comprising a truck cab (1), characterized in that, A vehicle body (2) is fixedly installed on the lower right side of the front of the vehicle (1). A lifting assembly (3) is provided on the upper part of the vehicle body (2). A truck bed (4) is provided on the upper part of the lifting assembly (3). The lifting assembly (3) includes a support frame (31). The bottom of the support frame (31) is fixedly installed on the top of the vehicle body (2). The bottom of the truck bed (4) overlaps the top of the support frame (31). A hydraulic cylinder (32) is fixedly installed in the middle of the right side of the inner wall of the support frame (31). A push rod (33) is provided on the right side inside the support frame (31). The telescopic end of the hydraulic cylinder (32) is fixedly installed on the push rod (33). In the middle of the right side, the support frame (31) has symmetrical guide grooves (35) on the front and rear sides. The front and rear ends of the push rod (33) extend to the front and rear sides of the support frame (31) through the guide grooves (35). The front and rear sides of the truck bed (4) have symmetrical connecting frames (36). There are two connecting frames (36). The bottom ends of the two connecting frames (36) are rotatably installed on the front and rear ends of the outer wall of the push rod (33) through bearings. The support frame (31) has two symmetrical guide rods (38) inside. The two ends of the two guide rods (38) are fixedly installed on the left and right sides of the inner wall of the support frame (31).

2. The lifting mechanism for a dump truck according to claim 1, characterized in that: The front ends of the connecting frame (36) on both sides are fixedly installed with hinges (361). The top ends of the two connecting frames (36) are installed on one side of the hinges (361), and the top ends of the two connecting frames (36) are hinged to the truck bed (4) through the hinges (361).

3. The lifting mechanism for a dump truck according to claim 1, characterized in that: The outer wall of the push rod (33) is rotatably mounted with a roller (34) via a bearing, and the outer wall of the roller (34) is rolled inside the guide groove (35).

4. A lifting mechanism for a dump truck according to claim 1, characterized in that: The push rod (33) is internally fixedly fitted with two guide covers (37), and the interior of the two guide covers (37) is movably fitted onto the outer wall of the two guide rods (38).

5. A lifting mechanism for a dump truck according to claim 4, characterized in that: The guide cover (37) is internally inlaid with a plurality of balls (371), and the outer wall of the balls (371) is rolled on the outer wall of the guide rod (38).

6. A lifting mechanism for a dump truck according to claim 1, characterized in that: An installation groove (5) is provided on the upper right side of the support frame (31). A connecting rod (6) is fixedly connected inside the installation groove (5). A support frame (7) is fixedly connected to one side of the bottom of the truck bed (4). The lower part of the support frame (7) is rotatably installed on the outer wall of the connecting rod (6).

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