A semi-trailer double compartment self-unloading device

Abstract

The present application relates to the technical field of heavy-duty dump truck, especially to a semi-trailer double-cabin self-unloading device, which comprises a controller and a hydraulic adjusting module, and further comprises a plurality of cargo cabins, an unloading mechanism and a transposition mechanism arranged on a beam frame, the controller controls the unloading mechanism to dump the cargo cabins, and the transposition mechanism adjusts the cargo cabins to realize position exchange. By arranging A and B double cargo cabins, the vehicle body center of gravity is reasonably divided during unloading, the lifting height is reduced, the cargo cabin overturning accident is reduced, the safety is improved, the height of warehouse and the area limit of field are reduced; two cargo cabins are loaded respectively, the type range of loaded goods is wider, and the loading and placing of goods are more convenient; compared with loading in a large cargo cabin, the load of single cargo cabin is reduced, the requirement of unloading mechanism is reduced, the cost of lifting device is correspondingly reduced, the mechanical structure is compact and reasonable, and the use is convenient.

Description

Technical Field

[0001] This invention relates to the field of heavy-duty dump truck technology, and more particularly to a semi-trailer double-box dumping device. Background Technology

[0002] Dump trucks are vehicles that unload goods themselves using hydraulic or mechanical lifting. Also known as tipper trucks, they typically consist of a truck chassis, hydraulic lifting mechanism, cargo box, and power take-off unit. Traditional semi-trailer dump trucks use either rear-tipping or side-tipping cargo boxes. Traditional dump trucks have relatively long cargo boxes, which can rise several meters or even tens of meters during unloading. In harsh conditions, this can easily exceed the safety margin of the center of gravity, leading to safety hazards or even rollover accidents, resulting in significant economic losses.

[0003] In existing technology, to avoid this problem, a bottom-discharge semi-trailer dump truck with patent number CN202210350738.5 describes a bottom-discharge structure formed by a material conveying drum and a bottom-discharge box, which unloads cargo from the bottom of the vehicle to reduce rollover accidents. However, due to limitations in chassis height and cargo box position, this dumping solution has significant limitations on the vehicle's usage scenarios, cargo volume, and material. Therefore, a dumping device is needed to achieve safer loading and unloading of cargo by dump trucks. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a semi-trailer double-box self-unloading device, including a controller and a hydraulic adjustment module, as well as several cargo boxes, an unloading mechanism, and a repositioning mechanism mounted on a beam frame. The controller controls the unloading mechanism to tilt the cargo boxes to unload the cargo, and the repositioning mechanism adjusts the cargo boxes to achieve position interchange.

[0005] Preferably, the cargo compartment includes a cargo compartment A and a cargo compartment B, which are arranged side by side, one in front of the other.

[0006] Preferably, the unloading mechanism includes a first secondary beam, a second secondary beam, a tilting hydraulic cylinder, and a lifting hydraulic cylinder. The rear section of the first secondary beam is hinged to the rear part of the beam frame, the front part of the second secondary beam is hinged to the front end of the first secondary beam, a connecting crossbar is provided in the middle of the first secondary beam, the tilting hydraulic cylinder is hinged to the rear part of the beam frame, the top of the tilting hydraulic cylinder is hinged to the connecting crossbar, a supporting crossbar is provided in the front part of the first secondary beam, the lifting hydraulic cylinder is hinged to the supporting crossbar, and the top of the lifting hydraulic cylinder is hinged to the second secondary beam.

[0007] Preferably, the shifting mechanism includes a lifting module and a separating module. The lifting module includes an extension hydraulic cylinder, a rotation hydraulic cylinder, a rotation shaft, and a lifting hydraulic cylinder. The rotation hydraulic cylinder is located below the front of the beam frame. The rotation shaft is located below the beam frame via a fixing frame and bearings. The end of the extension cylinder of the rotation hydraulic cylinder is hinged to one end of a connecting block, and the other end of the connecting block is fixedly connected to the middle of the rotation shaft. The rotation hydraulic cylinder drives the rotation shaft to rotate via the connecting block. The extension hydraulic cylinders are located at both ends of the rotation shaft. The drive cylinder of the extension hydraulic cylinder is fixedly mounted on the rotation shaft. The movable rod end of the extension hydraulic cylinder is fixedly mounted with a lifting hydraulic cylinder. Lifting hydraulic cylinders are respectively located on the lower sides of the front of the beam frame to control the extension and retraction of the hydraulic rods of the lifting hydraulic cylinders.

[0008] Preferably, the separation module includes a separation hydraulic cylinder and a lifting wheel. The bottom of the separation hydraulic cylinder is fixed to the second auxiliary beam, and the top of the movable rod of the separation hydraulic cylinder is provided with a rotatable lifting wheel, which abuts against the bottom of the cargo box.

[0009] Preferably, the indexing shaft is provided with telescopic gears that can slide relative to each other at both ends, and the lifting hydraulic cylinder is provided with a gear sleeve. The lifting hydraulic cylinder is axially slidably sleeved onto the telescopic gears on both sides of the indexing shaft through the gear sleeve.

[0010] Preferably, a support frame is provided on the top of the lifting hydraulic cylinder, and the support frame abuts against the top edge of the cargo box.

[0011] Preferably, the shifting mechanism further includes a driver, which is disposed at the front of the second secondary beam and the beam frame, and a rack is provided on the bottom surface of the cargo box. The driver engages with the rack at the bottom of the cargo box via a gear mounted on its drive shaft.

[0012] Preferably, the top of the second secondary beam is provided with several cargo box buckles, and the beam frame is provided with several cargo box buckles, and the cargo box is fixed by the cargo box buckles.

[0013] Preferably, the switching mechanism further includes a pulley mechanism, which includes a plurality of guide pulleys disposed on both sides of the bottom of the cargo box.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: by setting up two cargo compartments, A and B, to load goods separately, the center of gravity of the vehicle is reasonably distributed during unloading, the lifting height is reduced, the risk of cargo compartment rollover accidents is reduced, the safety is improved, and the restrictions on warehouse height and site area are reduced; the two cargo compartments are loaded separately, which allows for a wider range of types of goods to be loaded and makes it easier to pack and place goods; the two separate cargo compartments, compared to loading in a large cargo compartment, reduce the load capacity of a single cargo compartment, reduce the requirements for the unloading mechanism, and correspondingly reduce the cost of the lifting device, resulting in a compact and reasonable mechanical structure that is easy to use. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be discussed below. Obviously, the technical solutions described in conjunction with the accompanying drawings are only some embodiments of the present invention. For those skilled in the art, other embodiments and their accompanying drawings can be obtained based on the embodiments shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the unloading state structure of a semi-trailer double-box self-unloading device according to the present invention.

[0017] Figure 2 This is a three-dimensional structural diagram of a semi-trailer double-box self-unloading device according to the present invention.

[0018] Figure 3 This is a schematic diagram of the horizontal lifting state of a semi-trailer double-box self-unloading device according to the present invention.

[0019] Figure 4 This is a schematic diagram of the stacked cargo compartments of a semi-trailer double-box self-unloading device according to the present invention.

[0020] Figure 5 This is a schematic diagram of the cargo compartment of a semi-trailer double-box self-unloading device of the present invention after displacement.

[0021] Figure 6 This is a schematic diagram of the cargo-free structure of a semi-trailer double-box self-unloading device according to the present invention.

[0022] Figure 7 This is a top view of the unloading state of a semi-trailer double-box self-unloading device of the present invention.

[0023] Figure 8 This is a partial schematic diagram of the lifting module of a semi-trailer double-box self-unloading device according to the present invention.

[0024] Figure 9 A three-dimensional schematic diagram of the body structure of a semi-trailer double-box self-unloading device according to the present invention.

[0025] In the diagram: 1-Car body, 11-Cargo box A, 12-Cargo box B, 2-Beam frame, 21-First secondary beam, 22-Second secondary beam, 23-Tilting hydraulic cylinder, 24-Horizontal lifting hydraulic cylinder, 3-Driver, 4-Extending hydraulic cylinder, 41-Inverting hydraulic cylinder, 42-Lifting hydraulic cylinder, 5-Hydraulic adjustment module, 6-Cargo box buckle, 61-Guide pulley, 7-Lifting wheel. Detailed Implementation

[0026] The technical solutions of various embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments described in the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] An embodiment of the present invention provides a semi-trailer double-box self-unloading device, which is installed at the rear of the truck body 1, such as... Figure 1-9 As shown, the vehicle includes a rear beam frame 2, cargo boxes movably mounted on the beam frame 2 arranged side-by-side, a controller, a hydraulic adjustment module 5, an unloading mechanism, and a shifting mechanism. For ease of understanding, the cargo boxes are designated as cargo box A 11 and cargo box B 12. The hydraulic adjustment module 5 is connected to and controlled by several hydraulic cylinders via pipelines.

[0028] The unloading mechanism includes a first sub-beam 21, a second sub-beam 22, a tilting hydraulic cylinder 23, and a lateral lifting hydraulic cylinder 24. The rear section of the first sub-beam 21 is hinged to the rear of the beam frame 2, and the front section of the second sub-beam 22 is hinged to the front end of the first sub-beam 21. A connecting crossbar is provided in the middle of the first sub-beam 21. The tilting hydraulic cylinder 23 is hinged to the rear of the beam frame 2, and the top of the tilting hydraulic cylinder 23 is hinged to the connecting crossbar. A supporting crossbar is provided at the front of the first sub-beam 21, and the lateral lifting hydraulic cylinder 24 is hinged to the supporting crossbar. The top of the lateral lifting hydraulic cylinder 24 is hinged to the second sub-beam 22. That is, the rear end of the beam frame 2 is hinged to the rear end of the first sub-beam 21 by a connecting shaft, and the other end of the first sub-beam 21 is movably hinged to the front end of the second sub-beam 22 by a connecting shaft. The tilting hydraulic cylinder 23 is located on the upper part of the beam frame 2, and the horizontal lifting hydraulic cylinder 24 is located on the upper part of the first secondary beam 21. The top of the hydraulic rod of the horizontal lifting hydraulic cylinder 24 presses against the second secondary beam 22 to drive the cargo box to be simultaneously carried to a horizontal state.

[0029] The second secondary beam 22 has several cargo box buckles 6 installed at its top corresponding to the bottom structure of the cargo box. The cargo box buckles 6 are used to secure the cargo box, ensuring its stability and safety during vehicle movement and cargo unloading.

[0030] The shifting mechanism includes a lifting module, a driver 3, a separation module, and pulleys. The lifting module includes an extension hydraulic cylinder 4, a rotation hydraulic cylinder 41, a rotation shaft, and a lifting hydraulic cylinder 42. The rotation hydraulic cylinder 41 is located below the front of the beam frame 2. The rotation shaft is mounted below the beam frame 2 via a fixing frame and bearings. The extension cylinder end of the rotation hydraulic cylinder 41 is hinged to one end of an arc-shaped connecting block, and the other end of the arc-shaped connecting block is fixedly connected to the middle of the rotation shaft. The rotation hydraulic cylinder 41 drives the rotation shaft to rotate via the arc-shaped connecting block. The extension hydraulic cylinder 4 is located at both ends of the rotation shaft; specifically, the drive cylinder of the extension hydraulic cylinder 4 is fixedly mounted on the rotation shaft. The movable rod end of the extension hydraulic cylinder 4 is fixedly mounted with the lifting hydraulic cylinder 42. Lifting hydraulic cylinders 42 are respectively located on the lower sides of the front of the beam frame 2 to control the extension and retraction of the hydraulic rods of the lifting hydraulic cylinders 42. Telescopic gears that can slide relative to each other are provided at both ends of the rotation shaft. The lifting hydraulic cylinder 42 is equipped with a gear sleeve, through which the lifting hydraulic cylinder 42 is axially slidably fitted with telescopic gears on both sides of the indexing shaft. A support frame is provided on the top of the lifting hydraulic cylinder 42, and the support frame abuts against the edge of the cargo box top. The lifting hydraulic cylinder 42 can swing its extended hydraulic rod arm above the second auxiliary beam 22 and press against both sides of the top of cargo box A 11 as a safety aid.

[0031] A driver 3 is provided at the front of the second auxiliary beam 22. The driver 3 drives the transmission through a gear mounted on its drive shaft meshing with a rack at the bottom of the cargo box. For the same purpose, the driver 3 is mounted on the beam frame 2 at the rear of the B cargo box.

[0032] The separation module includes a separation hydraulic cylinder and a lifting wheel 7. The bottom of the separation hydraulic cylinder is fixed to the second auxiliary beam 22. The top of the movable rod of the separation hydraulic cylinder is provided with a rotating lifting wheel 7, which abuts against the bottom of the cargo box.

[0033] The cargo box has a rack in the middle of its bottom surface, which can be moved by the drive unit 3. Several guide pulleys 61 are provided on both sides of the top of the cargo box. Several cargo box latches 6 and drive units 3 are provided on the beam frame 2.

[0034] During use, in the initial state, the A cargo compartment 11 is located at the rear of the beam frame 2, and the B cargo compartment 12 is located at the front of the beam frame 2, and are respectively locked by the cargo compartment buckles 6 at the corresponding positions.

[0035] The hydraulic rod extending from the tilting hydraulic cylinder 23 pushes against the first auxiliary beam 21, the second auxiliary beam 22, and the A cargo compartment 11, causing them to rotate backward and tilt to form a ramp, thus achieving the self-unloading state. The cargo inside the A cargo compartment 11 tilts out from the rear opening under gravity. The empty compartment is lighter than when loaded.

[0036] Subsequently, the second auxiliary beam 22 is lifted up by the horizontal lifting hydraulic cylinder 24. At this time, the beam frame 2, the first auxiliary beam 21, and the second auxiliary beam 22 form a Z-shaped state, and the bottom surface of the A cargo box 11 is raised to be level with the top surface of the B cargo box 12.

[0037] At this time, the locking state of the cargo box latch 6 is released, the extension hydraulic cylinder 4 extends from the bottom of the vehicle, and the rotating shaft of the indexing hydraulic cylinder 41 rotates the lifting hydraulic cylinder 42 to the direction corresponding to the A cargo box 11. At the same time, the hydraulic rod of the lifting hydraulic cylinder 42 extends to abut against both sides of the A cargo box 11 and provides support. The driver 3 is activated, the separation hydraulic cylinder is activated, causing the lifting wheel 7 to rise and support the A cargo box, moving the A cargo box 11. Simultaneously, the indexing hydraulic cylinder 41 rotates synchronously, and the hydraulic rod of the lifting hydraulic cylinder 42 adjusts its length synchronously, moving the A cargo box 11 to the space above the B cargo box 12.

[0038] After the A cargo compartment 11 detaches from the first auxiliary beam 21 and the second auxiliary beam 22, the first auxiliary beam 21 and the second auxiliary beam 22 descend and return to their positions on the upper part of the beam frame 2. At this time, the cargo compartment latch 6 located on the beam frame 2 at the bottom of the B cargo compartment 12 releases, the separation hydraulic cylinder is activated, causing the lifting wheel 7 to rise and support the B cargo compartment 12. The driver 3 on the beam frame 2 moves the B cargo compartment 12 to the original unloading position of the A cargo compartment 11, that is, above the second auxiliary beam 22 at the rear of the beam frame 2. After the B cargo compartment 12 is in place, it is fastened and fixed by the cargo compartment latch 6 set on the second auxiliary beam 22, awaiting the unloading operation.

[0039] At this point, a placement space appears at the original location of the B cargo compartment 12, that is, at the front of the beam frame 2 and below the A cargo compartment 11. The hydraulic rod arm of the lifting hydraulic cylinder 42 supports the A cargo compartment 11 and lowers it vertically to the original location of the B cargo compartment 12. After the A cargo compartment 11 reaches its position, the cargo compartment latch 6 on the beam frame 2 is fastened and fixed, and at the same time, the hydraulic rod arm of the lifting hydraulic cylinder 42 retracts and disengages from the A cargo compartment 11. The rotating shaft of the indexing hydraulic cylinder 41 rotates, and the extending hydraulic cylinder 4 controls the body of the lifting hydraulic cylinder 42 to retract back to the bottom of the beam frame 2.

[0040] The lifting and unloading process of cargo compartment B 12 is the same as the unloading process of cargo compartment A 11, and will not be described again here.

[0041] By completing the above operations according to the steps, the A cargo compartment 11 and the B cargo compartment 12 can be interchanged and unloaded on the beam frame 2.

[0042] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects. The scope of the invention is defined by the appended claims, not by the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0043] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A semi-trailer double-box self-unloading device, comprising a controller and a hydraulic adjustment module (5), characterized in that: It also includes several cargo boxes, unloading mechanisms and repositioning mechanisms set on the beam frame (2). The controller controls the unloading mechanism to tilt the cargo boxes to unload the cargo. The repositioning mechanism adjusts the cargo boxes to achieve position interchange. The unloading mechanism includes a first secondary beam (21), a second secondary beam (22), a tilting hydraulic cylinder (23) and a lifting hydraulic cylinder (24). The rear section of the first secondary beam (21) is hinged to the rear of the beam frame (2). The front section of the second secondary beam (22) is hinged to the front end of the first secondary beam (21). A connecting crossbar is provided in the middle of the first secondary beam (21). The tilting hydraulic cylinder (23) is hinged to the rear of the beam frame (2). The top of the tilting hydraulic cylinder (23) is hinged to the connecting crossbar. A supporting crossbar is provided in the front of the first secondary beam (21). The supporting crossbar is hinged to the lifting hydraulic cylinder (24). The top of the lifting hydraulic cylinder (24) is hinged to the second secondary beam (22). The aforementioned shifting mechanism includes a lifting module and a separation module. The lifting module includes an extension hydraulic cylinder (4), a shift hydraulic cylinder (41), a shift shaft, and a lifting hydraulic cylinder (42). The shift hydraulic cylinder (41) is located below the front of the beam frame (2). The shift shaft is located below the beam frame (2) via a fixed frame and bearings. The end of the extension cylinder of the shift hydraulic cylinder (41) is hinged to one end of a connecting block. The other end of the connecting block is fixedly connected to the middle of the shift shaft. The shift hydraulic cylinder (41) drives the shift shaft to rotate via the connecting block. The extension hydraulic cylinder (4) is located at both ends of the shift shaft. The drive cylinder of the extension hydraulic cylinder (4) is fixedly located on the shift shaft. The movable rod end of the extension hydraulic cylinder (4) is fixedly provided with a lifting hydraulic cylinder (42). Lifting hydraulic cylinders (42) are respectively located below the front of the beam frame (2) to control the extension and retraction of the hydraulic rods of the lifting hydraulic cylinders (42).

2. The semi-trailer double-box self-unloading device according to claim 1, characterized in that: The cargo compartment includes a cargo compartment A (11) and a cargo compartment B (12), which are arranged side by side.

3. The semi-trailer double-box self-unloading device according to claim 1, characterized in that: The separation module includes a separation hydraulic cylinder and a lifting wheel (7). The bottom of the separation hydraulic cylinder is fixed to the second auxiliary beam (22). The top of the movable rod of the separation hydraulic cylinder is provided with a rotating lifting wheel (7). The lifting wheel (7) abuts against the bottom of the cargo box.

4. The semi-trailer double-box self-unloading device according to claim 1, characterized in that: The indexing shaft is provided with telescopic gears that can slide relative to each other at both ends, and the lifting hydraulic cylinder (42) is provided with a gear sleeve. The lifting hydraulic cylinder (42) slides along the axial direction to the telescopic gears on both sides of the indexing shaft through the gear sleeve.

5. The semi-trailer double-box self-unloading device according to claim 1, characterized in that: The top of the lifting hydraulic cylinder (42) is provided with a support frame, which abuts against the top edge of the cargo box.

6. The semi-trailer double-box self-unloading device according to claim 1, characterized in that: The shifting mechanism also includes a driver (3), which is located at the front of the second secondary beam (22) and on the beam frame (2). A rack is provided on the bottom surface of the cargo box, and the driver (3) engages with the rack at the bottom of the cargo box through a gear mounted on its drive shaft.

7. The semi-trailer double-box self-unloading device according to claim 1, characterized in that: The second secondary beam (22) is provided with several cargo box buckles (6) on its top, and the beam frame (2) is provided with several cargo box buckles (6), and the cargo box is fixed by the cargo box buckles (6).

8. The semi-trailer double-box self-unloading device according to claim 1, characterized in that: The switching mechanism also includes a pulley mechanism, which includes a plurality of guide pulleys (61) disposed on both sides of the top of the cargo box.

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