Novel back-tipping car unloader

Abstract

The utility model discloses a novel tip-back car unloader which comprises a lower platform and an upper platform, a rear support is arranged at the rear end of the lower platform, the lower platform is hinged to the upper platform through the rear support, the lower platform is composed of a supporting platform, the starting end of the supporting platform is provided with a transition section inclining downwards, and the transition section is connected with the transition section. Hydraulic cylinders are arranged on the two transverse sides of the transition section, piston rods on the hydraulic cylinders are connected with a propeller strut, the propeller strut is arranged on the two transverse sides of the upper platform, and the upper platform is a straight-through type upper platform composed of an uphill platform and a turnover platform. By improving the structure and the processing technology, the original bent upper platform is changed into the straight-through type upper platform, and the straight-through type upper platform can shorten the linear distance of the upper platform to the length of an unloading vehicle or be smaller than the length of the unloading vehicle under the condition that the bottom surface of the upslope platform is flatly attached to the ground; the unloading vehicle can better go uphill when backing up, the visual field is wider, and the stress of the whole vehicle is more uniform.

Description

Technical Field

[0001] The utility model belongs to the field of car unloaders, and particularly relates to a novel rear - tipping car unloader. Background Art

[0002] As Figure 1 and Figure 2 shown, the rear - tipping car unloader includes a lower platform 1 and an upper platform 2. The lower platform 1 consists of a connecting platform 11 at the start end and a supporting platform 12 at the end. The upper platform 2 is welded by an uphill platform 21 at the start end and a tipping platform 22 at the end. A rear support 3 is provided at the rear end of the supporting platform 12. The lower platform 1 is rotationally connected to the tipping platform 22 at the end of the upper platform 2 through the rear support 3. A hydraulic cylinder 4 is provided at the connection between the connecting platform 11 and the supporting platform 12. The piston rod 41 of the hydraulic cylinder 4 is connected to the cross - shaped frame 5 on the tipping platform 22. When unloading is required, the unloading vehicle reverses through the uphill platform 21 to the end of the tipping platform 22. The upper platform 2 drives the front end of the unloading vehicle to lift upward through the hydraulic cylinder 4, and the rear end of the unloading vehicle tilts downward, thus facilitating unloading.

[0003] In order to enable the unloading vehicle to reverse onto the upper platform 2 better, the bottom surface of the uphill platform 21 at the start end of the upper platform 2 needs to be flush with the ground. If the uphill platform 21 and the tipping platform 22 are straight - through (the uphill platform 21 and the tipping platform 22 are on the same horizontal plane) and slope down to be flush with the ground, the straight - line distance of the upper platform 2 needs to be lengthened. Taking a 17 - m unloading truck as an example, the straight - line distance of the upper platform 2 needs to be about 30 m (see l in Figure 1 ). In order to shorten the straight - line distance of the upper platform 2 to the length of the unloading vehicle or less than the length of the unloading vehicle and make the bottom surface of the uphill platform 21 flush with the ground, an uphill platform 21 with a downward bend needs to be welded at the start end of the tipping platform 22 (see L in the straight - line distance of the upper platform 2 with a bend in Figure 1 ), but the existing upper platform 2 has the following problems:

[0004] a. Since the uphill platform 21 has a downward bend, the angle between the bottom surface of the uphill platform 21 and the ground is relatively large, at 6 - 8°, so the uphill of the uphill platform 21 is relatively steep, and it is not easy for the unloading vehicle to go uphill when reversing.

[0005] b. When the unloading vehicle is reversing, the line of sight is blocked by the bend, and the rear tipping platform 22 cannot be seen.

[0006] c. When the unloading vehicle reverses to the bend, the rear end of the unloading vehicle has already been on the tipping platform 22, while the front end of the unloading vehicle is still on the uphill platform 21 in front of the bend, resulting in uneven force on the whole vehicle.

[0007] d. Since the uphill platform 21 has a downward bend, the uphill platform 21 can only be welded to the starting end of the tipping platform 22. Taking the upper platform composed of six I-beams as an example, that is, the ends of the six horizontally arranged I-beams on the uphill platform 21 are welded to the starting ends of the six horizontally arranged I-beams on the tipping platform 22. Therefore, the welding joints of the six I-beams are on the same vertical plane, reducing the strength of the upper platform 2. Summary of the Invention

[0008] The present invention provides a new type of rear dump truck. Through the improvement of the structure and processing technology, the original upper platform with a bend is changed into a straight-through type upper platform. Under the condition of ensuring that the bottom surface of the uphill platform is flush with the ground, the straight-line distance of the upper platform can be shortened to the length of the unloading vehicle or less than the length of the unloading vehicle, and at the same time, the problems existing in the above-mentioned upper platform with a bend are solved.

[0009] To achieve the above object, the present invention provides a new type of rear dump truck, including a lower platform and an upper platform. A rear support is provided at the rear end of the lower platform. The lower platform is hinged to the upper platform through the rear support. The lower platform is composed of a support platform. The starting end of the support platform has a downwardly inclined transition section. Hydraulic cylinders are provided on the transverse sides of the transition section. The piston rods on the hydraulic cylinders are connected to the cross frame. The cross frame is arranged on the transverse sides of the upper platform. The upper platform is a straight-through type upper platform composed of an uphill platform and a tipping platform.

[0010] As a further optimization, the included angle α between the bottom surface of the uphill platform and the ground is 2-4°.

[0011] As a further optimization, square steel is provided at the starting end and the ending end of the transition section.

[0012] As a further optimization, the included angle β between the side arms on both sides of the cross frame and the upper platform is 65°-67°.

[0013] As a further optimization, the straight-through type upper platform includes a frame and a checker plate arranged on the frame. The frame is composed of multiple horizontally arranged I-beams and longitudinally connected square steel. The starting ends of a part of the I-beams are welded with I-beams, and the ending ends of another part of the I-beams are welded with I-beams, so that the welding joints of the multiple horizontally arranged I-beams are not on the same vertical plane.

[0014] As a further optimization, a reinforcing plate is provided on the side of the welding joint.

[0015] Advantages and Beneficial Effects of the Present Invention

[0016] 1. The utility model cancels the connecting platform at the starting end of the lower platform and moves the hydraulic cylinder backward. Therefore, the length of the lower platform is shortened, the included angle between the rear support and the upper platform is reduced, and the straight-line distance of the upper platform is shortened. In order to make the bottom surface of the uphill platform flush with the ground after further shortening the straight-line distance of the upper platform, the starting end of the support platform is changed to have a downward-inclined transition section, and the backward-moved hydraulic cylinder is arranged at the top of the transition section. By changing the lower platform and the connection position of the hydraulic cylinder, the straight-line distance of the upper platform is greatly shortened. Even if the bent upper platform is changed to a straight-through upper platform, it can ensure that the straight-line distance of the upper platform is shortened to the length of the unloading vehicle or less than the length of the unloading vehicle, reducing the floor area and material consumption.

[0017] 2. The utility model increases the width of the A-frame, reducing the degree of the included angle β between the side walls on both sides of the A-frame and the upper platform from the original 69° - 71° to 65° - 67°, moving the lifting center of gravity of the hydraulic cylinder and the A-frame downward, and preventing the upper platform from jittering and resonating when being lifted upward by the hydraulic cylinder.

[0018] 3. The upper platform in the utility model is a straight-through upper platform, that is, the uphill platform and the flipping platform are on the same horizontal plane. Therefore, there is no included angle between the uphill platform and the flipping platform, and welding is not required between the frames of the uphill platform and the flipping platform. Thus, the strength of the upper platform is higher. If it is a large rear dump truck, when the length of the upper platform exceeds the standard length of the I-beam, I-beams can be welded at the starting end of a part of the I-beams and at the end of another part of the I-beams, so that multiple weld joints are not in the same vertical plane, thereby increasing the strength of the upper platform.

[0019] 4. The upper platform of the utility model is a straight-through upper platform, so the included angle α between the bottom surface of the upper platform and the ground is smaller, at 2 - 4°. Therefore, the slope of the upper platform is relatively gentle, making it easier for the unloading vehicle to go uphill in reverse, with a wider field of vision, being able to see the flipping platform behind, and the overall vehicle being more evenly stressed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings.

[0021] Figure 1 is the overall schematic diagram of the existing structure;

[0022] Figure 2 is the overall schematic diagram when the existing structure is lifted;

[0023] Figure 3 is the overall structure schematic diagram provided by the embodiment of the present utility model;

[0024] Figure 4 is the present utility model Figure 3 enlarged view of part A therein;

[0025] Figure 5 is the overall structure axonometric view provided by the embodiment of the present utility model.

[0026] Reference numerals of the existing structure: Lower platform 1, connecting platform 11, supporting platform 12, upper platform 2, uphill platform 21, flipping platform 22, rear support 3, hydraulic cylinder 4, piston rod 41 and herringbone frame 5.

[0027] Reference numerals of the present application: Lower platform 1, supporting platform 11, transition section 12, upper platform 2, uphill platform 21, flipping platform 22, rear support 3, hydraulic cylinder 4, piston rod 41, herringbone frame 5, side arm 51, square steel 6 and reinforcing plate 7. Specific embodiments

[0028] The following will describe in detail the specific embodiments of the present utility model with reference to the accompanying drawings. It should be noted that in the description of the present utility model, the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0029] Such as Figures 3 to 5As shown in the figure, a new type of rear dump truck includes a lower platform 1 and an upper platform 2. A rear support 3 is provided at the rear end of the lower platform 1. The lower platform 1 is hinged to the upper platform 2 through the rear support 3. The connecting platform at the start of the support platform 11 of the lower platform 1 is cancelled, and it is composed of the support platform 11. Therefore, the length of the lower platform 1 is shortened, the included angle between the rear support 3 and the upper platform 2 is reduced, and the straight-line distance of the upper platform 2 is shortened. The start of the support platform 11 is provided with a downward-sloping transition section 12. The transition section 12 reduces the height at the start of the lower platform 1, further reducing the included angle between the rear support 3 and the upper platform 2 and shortening the straight-line distance of the upper platform 2. Making the upper platform 2 a straight-through type can also ensure that the straight-line distance of the upper platform 1 is shortened to the length of the unloading vehicle or less than the length of the unloading vehicle, while ensuring that the bottom surface at the start of the upper platform 2 is flush with the ground. Square steel 6 is provided at the start and end of the transition section 12. The square steel 6 can strengthen the strength of the transition section 12. Hydraulic cylinders 4 are provided on the left and right sides of the transition section 12. The piston rod 41 on the hydraulic cylinder 4 is connected to the cross frame 5. The cross frame 5 is arranged on the left and right sides of the upper platform 2. The included angle β between the side arms 51 on both sides of the cross frame 5 and the upper platform 2 is between 65° and 67°. Therefore, the lifting center of gravity of the hydraulic cylinder 4 and the cross frame 5 is lowered, preventing the upper platform 2 from shaking and resonating when lifted upward by the hydraulic cylinder 4. The upper platform 2 is a straight-through type upper platform composed of an uphill platform 21 and a tipping platform 22. The included angle α between the bottom surface at the start of the straight-through type upper platform and the ground is between 2° and 4°. Therefore, the slope of the upper platform 2 is relatively gentle, making it easier for the unloading vehicle to drive uphill in reverse, with a wider field of vision and allowing it to see the tipping platform 22 at the rear.

[0030] As a further optimization, the straight-through type upper platform includes a frame and checker plates arranged on the frame. The frame is composed of multiple horizontally arranged I-beams and longitudinally connected square steel. If it is a small rear dump truck, the front ends of the multiple horizontally arranged I-beams can be processed into the uphill platform 21, and the middle and end parts of the I-beams are the tipping platform 22. Therefore, each horizontally arranged I-beam does not require a welded joint, and the strength of the upper platform is higher. If it is a large rear dump truck and the length of the upper platform exceeds the standard length of the I-beam, since there is no constraint of downward bending, I-beams can be welded to the start of some I-beams and to the end of other I-beams so that multiple welded joints are in different vertical planes, increasing the strength of the upper platform 1. Reinforcing plates 7 are provided on the sides of the welded joints. The reinforcing plates 7 can strengthen the strength of the welded joints.

[0031] As a further optimization, in this application, hot processing treatment is carried out at the welded joints of the upper platform 2 and the front and rear sides of the welded joints, causing prestress in the upper platform 2, which can completely or partially offset the tensile stress caused by the load, further enhancing the strength and stiffness of the upper platform 2.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention, rather than to limit them; although the embodiments of the present invention have been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the solutions of the embodiments of the present invention.

Claims

1. A new type of rear tipping loader, comprising a lower platform (1) and an upper platform (2). A rear support (3) is provided at the rear end of the lower platform (1). The lower platform (1) is hinged to the upper platform (2) through the rear support (3), and is characterized in that: The lower platform (1) consists of a support platform (11). The starting end of the support platform (11) is provided with a downwardly inclined transition section (12). Hydraulic cylinders (4) are arranged on both lateral sides of the transition section (12). A piston rod (41) on the hydraulic cylinder (4) is connected to a herringbone frame (5). The herringbone frame (5) is arranged on both lateral sides of the upper platform (2). The upper platform (2) is a straight-through upper platform composed of an uphill platform (21) and a flipping platform (22).

2. The novel rear tipping loader according to claim 1, wherein: The angle α between the bottom surface of the uphill platform (21) and the ground is 2 to 4°.

3. A novel rear dump truck according to claim 1, characterized in that: Square steel (6) is arranged at the starting end and the ending end of the transition section (12).

4. A novel rear dump truck according to claim 1, characterized in that: The angle β between the side arms (51) on both sides of the herringbone frame (5) and the upper platform (2) is 65° to 67°.

5. A novel rear dump truck according to claim 1, characterized in that: The straight-through upper platform includes a frame and a checker plate arranged on the frame. The frame is composed of a plurality of horizontally arranged I-beams and longitudinally connected square steel. The starting ends of a part of the I-beams are welded with I-beams, and the ending ends of another part of the I-beams are welded with I-beams, so that the welding joints of the plurality of horizontally arranged I-beams are not in the same vertical plane.

6. A novel rear dump truck according to claim 5, characterized in that: Reinforcing plates (7) are arranged on the sides of the welding joints.

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