Double-side-turning container type dump truck for coal mine

Abstract

The invention provides a double-side-turning container type self-discharging truck for a coal mine. The double-side-turning container type self-unloading truck for the coal mine comprises a truck assembly, a driving assembly and a side-unloading container assembly, wherein the driving assembly and the side-unloading container assembly are arranged on the truck assembly; the driving assembly is used for driving the side-unloading container assembly to turn over towards the two sides of the truck assembly; the side unloading container assembly comprises a container body, unloading openings are symmetrically formed in the two sides of the container body, and the side unloading container assembly is connected with the truck assembly through a hinge assembly. The double-side-turning container type self-discharging truck for the coal mine has the two-way efficient discharging capacity and high derailing resistance reliability, and the technical problem that an existing rail type self-discharging truck cannot adapt to complex roadway layout due to the single discharging direction is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mine machinery, in particular to a double-side tipping container-type self-unloading heavy vehicle for coal mines. Background Art

[0002] In underground coal mine transportation systems, rail-mounted dump trucks are core equipment for the transfer of materials such as coal and gangue. Their typical structure consists of a frame, a wheel set, a fixed cargo box, and a single-sided hydraulic tipping mechanism. During operation, the vehicle travels along a fixed track to the unloading point. A hydraulic cylinder rotates the cargo box around a single hinged axis, tipping the material onto the track. This design, relying on a fixed unloading direction, allows for efficient unloading in ample tunnel space, meeting basic transportation needs.

[0003] However, in complex underground environments, especially when encountering narrow curves, intersections of branch tunnels, or restricted areas, the one-way unloading limitations of rail-mounted dump trucks become apparent. If the unloading point is on the other side of the track (such as the inside of a curve or on the side blocked by equipment), the cargo box can only flip in one direction, requiring the vehicle to repeatedly adjust its parking position or rely on tunnel expansion to complete unloading, severely reducing operational efficiency. More critically, in scenarios requiring rapid material clearance, such as emergency evacuation or gas outburst areas, insufficient directional adaptability can lead to unloading failures, threatening safe production.

[0004] In existing technologies, to overcome restrictions on unloading direction, some scenarios use a solution that combines ordinary flatbed trucks with rotatable containers: the direction of the container can be adjusted manually or with simple devices to achieve multi-directional unloading. However, this design has significant drawbacks: poor driving stability: the flatbed truck lacks lateral restraint and center of gravity control for the container. On uneven track sections or during acceleration / braking, the container is prone to shifting or even overturning, causing the vehicle to derail; low unloading efficiency: additional operations are required to adjust the container's orientation each time unloading occurs, and there is no integrated hydraulic system, relying on manual labor or auxiliary equipment, which is time-consuming and labor-intensive; high safety risks: derailment accidents may block tunnels, damage equipment, and require personnel to enter dangerous areas to reset, exacerbating the risks of underground operations. Summary of the Invention

[0005] In view of this, the present invention aims to propose a double-side tipping container-type self-unloading heavy vehicle for coal mines, which has both bidirectional efficient unloading capability and high anti-derailment reliability, and solves the technical problem that existing rail-type dump trucks cannot adapt to complex tunnel layouts due to their single unloading direction.

[0006] To achieve the above object, the technical solution of the present invention is achieved as follows: A double-side-tip container-type self-unloading truck for coal mines, comprising a truck assembly, a drive assembly and a side-discharging container assembly provided on the truck assembly, wherein the drive assembly is used to drive the side-discharging container assembly to flip toward both sides of the truck assembly; The side-dumping container assembly includes a box body, and discharge ports are symmetrically provided on both sides of the box body, and are connected to the truck assembly via a hinged component.

[0007] Furthermore, the discharge ports on both sides of the box body are rotatably provided with side doors and locking members; when the box body is flipped to one side, the locking member rotates under the action of gravity and releases the lock on the side door, causing the side door to rotate and open.

[0008] Furthermore, the hinge assembly includes rotating parts respectively provided on the truck assembly and the box body, and a pin passing through the two rotating parts; The pin shaft is detachably arranged on the rotating member, and the rotating member can rotate around the axis of the pin shaft.

[0009] Furthermore, the box body includes a frame and a plurality of baffles fixed on the frame, and rotating shafts are symmetrically provided on both sides of the frame.

[0010] Furthermore, the box body also includes a reinforcing plate, which is fixedly arranged at the vertical connection position of the frame.

[0011] Furthermore, the drive assembly includes a hydraulic station and a hydraulic rod; The hydraulic station is fixedly arranged on the truck assembly, the fixed end of the hydraulic rod is hinged to the truck assembly, and the telescopic end is sleeved on the rotating shaft.

[0012] Furthermore, the truck assembly includes a frame, and a traveling wheel train and a turntable arranged on the frame; The traveling wheel system is symmetrically arranged on both sides of the frame, and the turntable is rotatably arranged on the frame. Compared with the prior art, the present invention has the following advantages: The present invention describes a double-side dump container-type self-unloading vehicle for coal mines. Based on a structure where a truck assembly carries a container connected by an articulated assembly, it incorporates a dual-sided discharge port and a hydraulic drive system. When the hydraulic cylinder rotates the container around its axis, the container tilts to the left or right of the vehicle to unload. This design overcomes the spatial limitations of one-way unloading vehicles, enabling unloading operations from either side in narrow coal mine lanes without adjusting the vehicle's orientation. This significantly improves operational adaptability in complex terrain and addresses the technical problem of existing rail-mounted dump trucks, which are unable to adapt to complex lane layouts due to their single unloading direction.

[0013] Secondly, the installation of a side door at the discharge port helps prevent material from spilling through the discharge port during transportation. The side door works in conjunction with a gravity-driven locking element, locking it into the side door's retaining slot when the box is vertical. When the box tilts, the locking element automatically rotates and unlocks due to the shift in its center of gravity, allowing the side door to open. A mechanical linkage mechanism eliminates the risk of electronic component failure in coal dust environments and ensures that unloading and box flipping are completed synchronously, preventing material blockages caused by delayed manual operation.

[0014] Furthermore, a removable pin extends through the rotating parts of the truck assembly and the box body. This allows the pin to contact the shaft hole during operation, transmitting torque and suppressing unbalanced load vibration. When the box needs to be flipped for unloading or maintenance, the components can be separated by pulling out the pin. Compared to welded articulated joints, this structure simplifies assembly and disassembly, shortens maintenance time, and reduces fatigue damage to the connectors caused by repeated flipping.

[0015] Thirdly, by using the frame as the main load-bearing skeleton to support the baffles, and welding the rotating shafts directly to the baffles on both sides of the frame, the frame bears the overall bending load, the baffles disperse the local impact, and the rotating shafts serve as the input point of the hydraulic driving force, thus optimizing the force flow path. This reduces the deadweight while ensuring the rigidity of the box, and the direct connection between the rotating shaft and the drive mechanism reduces power transmission losses. By adding triangular reinforcement plates at the vertical connections of the frame, when the impact force of the material is transmitted to the frame nodes through the baffles during unloading, the reinforcement plates can convert concentrated stress into a uniformly distributed load, thereby strengthening the torsional resistance of the box corners, effectively suppressing the plastic deformation of the frame caused by repeated impacts, and extending the life of key connection areas.

[0016] Furthermore, by configuring the drive assembly as a hydraulic rod structure controlled by a hydraulic station, stable and precise control of the box's tilt angle is achieved. By connecting the telescopic end of the hydraulic rod to the box's rotating shaft, rolling friction between the sleeve and the shaft drives the box's rotation as the rod retracts. This direct drive mode eliminates intermediate transmission links such as chains and gears, eliminating slippage, a common occurrence in wet coal mine environments, and ensuring precise control of the box's tilt angle. The hydraulic station's built-in frame prevents pipeline damage caused by roadway collisions.

[0017] In addition, by configuring a traveling wheel system and a top rotating turntable on the frame, the turntable can keep the frame of the truck in contact with the track at the bend of the track, thereby improving the posture stability of the truck during the entire turning process and meeting the operating requirements of irregular stacking sites in coal mines. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which constitute part of the present invention, are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings: Figure 1 This is a structural diagram of a double-side-tip container-type self-unloading heavy vehicle for coal mines in an embodiment of the present application; Figure 2 This is a structural diagram of a side-dumping container assembly in an embodiment of the present application; Figure 3 This is a schematic structural diagram of the truck assembly in an embodiment of the present application.

[0019] Description of reference numerals: 1. Truck assembly; 101. Frame; 102. Traveling wheel system; 103. Turntable; 2. Drive assembly; 201. Hydraulic station; 202. Hydraulic rod; 3. Side-dumping container assembly; 301. Container; 3011. Frame; 3012. Baffle; 3013. Rotating shaft; 3014. Reinforcement plate; 302. Hinge assembly; 303. Side door; 304. Locking member; 3021. Rotating member; 3022. Pin. DETAILED DESCRIPTION

[0020] It should be noted that, unless there is a conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings and other implementation methods can be obtained based on these drawings without inventive work.

[0021] In the description of the present invention, it should be noted that if terms such as "upper," "lower," "inner," and "outer" appear to indicate orientation or positional relationships, these are based on the orientation or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, if terms such as "first" and "second" appear, they are used solely for descriptive purposes and should not be construed as indicating or implying relative importance.

[0022] Taking the double-side tipping container-type self-unloading heavy vehicle for coal mines described in the present invention as an example, the directional words used in the embodiments, such as "up, down, left, right, front, and back", are defined based on the up and down direction (also known as the height direction or the Z direction of the double-side tipping container-type self-unloading heavy vehicle for coal mines), the left and right direction (also known as the width direction or the Y direction of the double-side tipping container-type self-unloading heavy vehicle for coal mines), and the front and back direction (also known as the length direction or the X direction of the double-side tipping container-type self-unloading heavy vehicle for coal mines). "Inside" and "outside" are defined based on the outline of the corresponding parts. For example, "inside" and "outside" are defined based on the outline of the double-side tipping container-type self-unloading heavy vehicle for coal mines, and the side of the outline of the double-side tipping container-type self-unloading heavy vehicle for coal mines close to the middle of the double-side tipping container-type self-unloading heavy vehicle for coal mines is "inside", and the opposite side is "outside".

[0023] Furthermore, in the description of the present invention, unless otherwise expressly defined, the terms "mounted," "connected," "connect," and "connector" should be interpreted broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will appreciate the specific meanings of these terms in the present invention based on specific circumstances. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with exemplary embodiments.

[0024] The following will refer to the attached Figure 1 To the attached Figure 3 The present invention is described in detail with reference to the embodiments.

[0025] This embodiment relates to a double-side tipping container-type self-unloading heavy vehicle for coal mines, which has both bidirectional efficient unloading capabilities and high anti-derailment reliability, and solves the technical problem that existing rail-type dump trucks cannot adapt to complex tunnel layouts due to their single unloading direction.

[0026] In terms of overall structure, refer to Figure 1 and Figure 2 In this embodiment, a double-side-tip container-type self-unloading truck for coal mines includes a truck assembly 1, a drive assembly 2, and a side-unloading container assembly 3. The drive assembly 2 and the side-unloading container assembly 3 are both installed on the truck assembly 1, and the drive assembly 2 is connected to the inclinometer container assembly to drive the side-unloading container assembly 3 to rotate toward both sides of the truck assembly 1. The side-unloading container assembly 3 includes a box body 301 and a hinge assembly 302. The box body 301 is rotatably connected to the truck assembly 1 through the hinge assembly 302. Discharge ports are symmetrically provided on both sides of the box body 301. When the box body 301 rotates relative to the truck assembly 1 under the action of the drive assembly 2, the material in the box body 301 pours out from the discharge port to both sides of the truck assembly 1.

[0027] Based on the structure of the truck assembly 1 carrying the box 301 and connected by the hinge assembly 302, combined with the dual-side discharge port and the drive system driven by hydraulics, when the hydraulic cylinder pushes the box 301 to rotate about its axis, the box 301 can tilt to the left or right side of the vehicle to discharge materials. This design overcomes the spatial limitations of one-way unloading vehicles, allowing unloading operations to be completed from either side in narrow coal mine lanes without adjusting the vehicle's direction. This significantly improves operational adaptability in complex terrain and solves the technical problem that existing rail-mounted dump trucks cannot adapt to complex lane layouts due to their single unloading direction.

[0028] Reference Figure 1 and Figure 2 In this embodiment, side doors 303 and locking members 304 are installed at the locations where the discharge ports are located on both sides of the box body 301. The side doors 303 are mounted to the box body 301 via a rotational connection. When the box body 301 is perpendicular to the ground, the locking members 304 limit the rotation of the side doors 303. When the box body 301 rotates toward the side of the truck assembly 1, the locking members 304 flip under the action of gravity and release the limit on the side doors 303, allowing the side doors 303 to rotate relative to the box body 301 under the action of gravity and open.

[0029] The installation of a side door 303 at the discharge port helps prevent material from spilling from the box 301 during transport. The side door 303 works in conjunction with a gravity-driven locking member 304, locking it into place when the box 301 is vertical. When the box 301 tilts, the locking member 304 automatically rotates and unlocks due to the shift in its center of gravity, allowing the side door 303 to open. A mechanical linkage eliminates the risk of electronic component failure in a dusty environment and ensures that unloading is synchronized with the tilting of the box 301, preventing material blockage caused by delayed manual operation.

[0030] Reference Figure 1 and Figure 2 The hinge assembly 302 includes a rotating member 3021 and a pin 3022. There are two rotating members 3021, each welded to the truck assembly 1 and the bottom edge of the box 301. The pin 3022 is detachably mounted on the two rotating members 3021, allowing the rotating members 3021 to rotate about their axes.

[0031] By employing a detachable pin 3022 extending through the rotating member 3021 fixed to the truck assembly 1 and the housing 301, the pin 3022 contacts the shaft hole surface during operation, transmitting torque and suppressing unbalanced load vibration. When the housing 301 needs to be flipped over for unloading or maintenance, the components can be separated by pulling out the pin 3022. Compared to welded hinges, this structure simplifies assembly and disassembly, shortens maintenance time, and reduces fatigue damage to the connectors caused by repeated flipping.

[0032] Reference Figure 1 and Figure 2 The housing 301 comprises a frame 3011, baffles 3012, a rotating shaft 3013, and a reinforcing plate 3014. The frame 3011 can be a rectangular metal frame constructed by welding hollow square steel with a rectangular cross-section. The baffles 3012 can be steel plates with a thickness that meets load-bearing requirements. The baffles 3012 are welded to the inside of the frame 3011, forming the main structure of the housing 301. The housing 301 also includes rotating shafts 3013 symmetrically located on either side. The rotating shafts 3013 can be solid cylindrical metal cylinders, fixed perpendicular to the surfaces of the baffles 3012. A drive mechanism is mounted on the rotating shafts 3013, supporting them to rotate the housing 301 as a whole about their axis. The reinforcing plate 3014 can be a triangular metal plate, fixed to the vertical connection of the frame 3011 by welding.

[0033] By using the frame 3011 as the primary load-bearing framework to support the baffles 3012, and welding the rotating shafts 3013 directly to the baffles 3012 on either side of the frame 3011, the frame 3011 bears the overall bending load, the baffles 3012 disperse local impacts, and the rotating shafts 3013 serve as the input point for the hydraulic drive force. This optimizes the force flow path, reducing the weight while ensuring the rigidity of the box 301. Furthermore, the direct connection between the rotating shafts 3013 and the drive mechanism reduces power transmission losses. By adding triangular reinforcement plates 3014 at the vertical connections of the frame 3011, when the impact force of the material is transmitted to the nodes of the frame 3011 through the baffles 3012 during unloading, the reinforcement plates 3014 can convert concentrated stress into a uniformly distributed load, thereby strengthening the torsional resistance of the corners of the box 301, effectively suppressing the plastic deformation of the frame 3011 caused by repeated impacts, and extending the life of the critical connection area.

[0034] Reference Figure 1Drive assembly 2 includes a hydraulic station 201 and a hydraulic rod 202. Hydraulic station 201 is fixedly mounted on truck assembly 1 and connected to hydraulic rod 202. The fixed end of hydraulic rod 202 is hinged to truck assembly 1, while the telescopic end of hydraulic rod 202 is mounted on shaft 3013 of housing 301. Hydraulic station 201 controls the extension and retraction of hydraulic rod 202. By extending and retracting the telescopic end mounted on shaft 3013, hydraulic rod 202 drives housing 301 to rotate about the axis of shaft 3013.

[0035] By configuring the drive assembly 2 as a hydraulic rod 202 structure controlled by a hydraulic station 201, stable and precise control of the tilt angle of the housing 301 can be achieved. By fitting the telescopic end of the hydraulic rod 202 onto the housing 301's rotating shaft 3013, the supporting force generated by the hydraulic rod 202 as it retracts and retracts drives the housing 301 to rotate. This direct drive mode eliminates intermediate transmission links such as chains and gears, eliminating slippage, a common occurrence in wet coal mine environments, and ensuring precise control of the housing 301's tilt angle. The hydraulic station 201's built-in frame 101 prevents pipeline damage caused by roadway collisions.

[0036] Reference Figure 1 and Figure 3 The truck assembly 1 includes a frame 101, a traveling wheel train 102, and a turntable 103. The traveling wheel train 102 and the turntable 103 are both mounted on the frame 101. The frame 101 is a rectangular frame structure formed by welding square steel with a rectangular cross-section. The traveling wheel trains 102 are symmetrically distributed on both sides of the frame 101. The traveling wheel train 102 includes a drive structure for driving the traveling wheels to rotate, and traveling wheels that are engaged with the rack rail side cabinets. The turntable 103 is mounted on the frame 101 by a rotational connection.

[0037] By configuring the traveling wheel train 102 and the turntable 103 arranged to rotate on the top on the frame 101, the turntable 103 can enable the frame 101 and the traveling wheel train 102 of the truck to keep in contact with the track at the track bend, thereby improving the posture stability of the truck during the entire turning process and meeting the operation requirements of irregular stacking sites in coal mines.

[0038] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A double-side dump container-type self-unloading heavy vehicle for coal mines, characterized by: It comprises a truck assembly (1), and a drive assembly (2) and a side-discharge container assembly (3) arranged on the truck assembly (1), wherein the drive assembly (2) is used to drive the side-discharge container assembly (3) to flip toward both sides of the truck assembly (1); The side-unloading container assembly (3) comprises a box body (301), and discharge ports are symmetrically provided on both sides of the box body (301), and the box body (301) is connected to the truck assembly (1) via a hinge assembly (302).

2. A double-side-tip container-type self-unloading heavy vehicle for coal mines according to claim 1, characterized in that: The discharge ports on both sides of the box body (301) are rotatably provided with side doors (303) and locking members (304); when the box body (301) is turned to one side, the locking members (304) rotate under the action of gravity and release the lock on the side door (303), so that the side door (303) rotates and opens.

3. The double-side-tip container-type self-unloading heavy vehicle for coal mines according to claim 1, characterized in that: The hinge assembly (302) comprises rotating parts (3021) respectively provided on the truck assembly (1) and the box body (301), and a pin (3022) passing through the two rotating parts (3021); The pin shaft (3022) is detachably arranged on the rotating member (3021), and the rotating member (3021) is rotatable around the axis of the pin shaft (3022).

4. The double-side-tip container-type self-unloading heavy vehicle for coal mines according to claim 1, characterized in that: The box body (301) comprises a frame (3011) and a plurality of baffles (3012) fixed on the frame (3011), and rotating shafts (3013) are symmetrically arranged on both sides of the frame (3011).

5. The double-side-tip container-type self-unloading heavy vehicle for coal mines according to claim 4, characterized in that: The box body (301) further comprises a reinforcing plate (3014), wherein the reinforcing plate (3014) is fixedly arranged at a vertical connection portion of the frame (3011).

6. The double-side-tip container-type self-unloading heavy vehicle for coal mines according to claim 4, characterized in that: The drive assembly (2) includes a hydraulic station (201) and a hydraulic rod (202); The hydraulic station (201) is fixedly mounted on the truck assembly (1); the fixed end of the hydraulic rod (202) is hinged to the truck assembly (1); and the telescopic end is sleeved on the rotating shaft (3013).

7. The double-side-tip container-type self-unloading vehicle for coal mines according to claim 1, characterized in that: The truck assembly (1) includes a vehicle frame (101), and a traveling wheel train (102) and a turntable (103) arranged on the vehicle frame (101); The traveling wheel train (102) is symmetrically arranged on both sides of the vehicle frame (101), and the turntable (103) is rotatably arranged on the vehicle frame (101).

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