Train carriage bulk material unloading device under electric traction contact network and operation method

Abstract

The invention discloses a train carriage bulk material unloading device under an electric traction contact network. The rack lifting stand column is arranged on the walking trolley; the horizontal cantilever beam is arranged at the top of the lifting stand column of the rack, and a horizontal conveying pipe is arranged on the horizontal cantilever beam; the vertical connecting arm is movably connected with the end part of the horizontal cantilever beam; a vertical conveying pipe communicated with the horizontal conveying pipe is arranged on the vertical connecting arm; the vertical connecting arm can rotate around a first axial direction and a second axial direction relative to the horizontal cantilever beam, and the vertical connecting arm can be folded below the horizontal cantilever beam when rotating around the second axial direction; the material suction working head is arranged at the end part of the vertical connecting arm, is communicated with the vertical material conveying pipe, and comprises a negative pressure material suction nozzle communicated with the vertical material conveying pipe; and the revolving platform is used for controlling the horizontal cantilever beam to horizontally rotate around the axis of the rack lifting upright post. The device is used for sucking and unloading materials in a train carriage, is flexible to use, and does not interfere with an electric traction overhead line system in the working process.

Description

Technical Field

[0001] The present invention belongs to the technical field of material unloading equipment, and particularly relates to a vacuum extraction unloading device for railway freight cars of bulk materials such as granular and powdery materials and its operation method. Background Art

[0002] Bulk materials such as coal and iron ore in powder and granular form are usually transported by train. After the train arrives at the destination, the traditional unloading method is to use a car dumper to turn the freight car over and unload the materials from the freight car. This unloading method requires the freight car to drive to a specific position and turn the freight car over by the car dumper. Therefore, the station needs to be equipped with corresponding facilities, such as the receiving workshop disclosed in the invention patent No. CN215478497U. The method of unloading by turning over the freight car has the disadvantages of high cost and low flexibility because it is necessary to plan a corresponding site to build the corresponding workshop and equipment. Later, a suction-pressure type bulk material pneumatic conveyor as disclosed in the patent No. CN87204734U appeared on the market. This suction-pressure type pneumatic conveying device includes a centrifugal blower, a negative pressure suction nozzle, a separator, a discharger, a dust collector, a conveying hose, a discharging nozzle and a dust collector. The negative pressure air flow generated by the centrifugal blower sucks the materials through the negative pressure suction nozzle and outputs them through the discharging nozzle. However, an overhead contact line for electric traction is usually arranged above the freight cars in the railway yard. The height of the overhead contact line for electric traction is generally 6 - 6.5 meters, and the area within 0.5 meters below the overhead contact line for electric traction is a no-entry area (that is, the height below 0.5 meters below the overhead contact line for electric traction is the safe height). Therefore, the safe space above the railway tank car and the top-opening freight car is only 1.5 - 2 meters, and the operation space of the unloading equipment will be limited by the height of the overhead contact line for electric traction. The existing unloading machines do not consider how to avoid interference with the overhead contact line for electric traction during operation and cannot be applied to such scenarios for car unloading operations, and cannot meet the car unloading requirements of bulk materials under the condition of the overhead contact line for electric traction. If manual operation is adopted, with workers entering the freight car and tank car for operation, there are problems such as high labor cost, high labor intensity, low efficiency, environmental unfriendliness and potential safety hazards. Moreover, how to shorten the train stay time and ensure safe production is an important assessment index for railway station management work. In view of the above problems, there is an urgent need to provide an efficient and safe unloading equipment for bulk materials for freight cars and tank cars located below the overhead contact line for electric traction. Summary of the Invention

[0003] The purpose of the present invention is to provide a railway freight car bulk material unloading device with flexible use and capable of achieving efficient unloading below the overhead contact line for electric traction and its operation method.

[0004] To achieve the above purpose, the following technical solutions are adopted in the present invention:

[0005] Bulk material unloading device for train carriages under an electric traction catenary, comprising: a walking trolley; a rack lifting column provided on the walking trolley; a horizontal cantilever beam provided at the top of the rack lifting column, a horizontal feeding pipe being provided on the horizontal cantilever beam; a vertical connecting arm movably connected to the end of the horizontal cantilever beam, a vertical feeding pipe being provided on the vertical connecting arm, the vertical feeding pipe being communicated with the horizontal feeding pipe; the vertical connecting arm can rotate relative to the horizontal cantilever beam about a first axis and a second axis, the first axis extends horizontally and is parallel to the horizontal cantilever beam, the second axis extends horizontally and is perpendicular to the horizontal cantilever beam, when the vertical connecting arm rotates about the second axis, it can rotate to a folded state folded under the horizontal cantilever beam or an unfolded state where the distal end is away from the horizontal cantilever beam, when the vertical connecting arm rotates about the first axis, it can rotate to a state where the distal end is located on the left and right sides of the horizontal cantilever beam; a suction working head provided at the end of the vertical connecting arm, the suction working head and the vertical connecting arm form a rigid suction component, the suction working head is communicated with the vertical feeding pipe, the suction working head comprises a negative pressure suction nozzle, and the negative pressure suction nozzle is communicated with the vertical feeding pipe; a slewing platform for controlling the horizontal rotation of the horizontal cantilever beam about the axis of the rack lifting column.

[0006] Further, the vertical connecting arm is connected to the horizontal telescopic cantilever beam through a first swing oil cylinder and a second swing oil cylinder, the first swing oil cylinder is used to control the rotation of the vertical connecting arm about the second axis, the second swing oil cylinder is used to control the rotation of the vertical connecting arm about the first axis, and the first axis and the second axis are orthogonal.

[0007] Further, the slewing platform is provided at the top of the rack lifting column, the horizontal cantilever beam is provided on the slewing platform through a hinge seat, a horizontal hinge shaft is provided on the hinge seat, and the horizontal cantilever beam can rotate in a vertical plane about the hinge shaft.

[0008] Further, when the vertical connecting arm rotates to a horizontal state, the overall maximum height h of the horizontal cantilever beam, the vertical connecting arm and the suction working head is less than 1.5 meters.

[0009] Further, a hydraulic pump station is provided at the other end of the horizontal cantilever beam, and the hydraulic pump station and the vertical connecting arm are respectively located at both ends of the horizontal cantilever beam.

[0010] Further, the horizontal cantilever beam and the horizontal feeding pipe are arranged in parallel and connected through a connecting piece, and the horizontal cantilever beam and the horizontal feeding pipe are telescopic structures with adjustable lengths.

[0011] Further, the vertical connecting arm and the vertical material conveying pipe are arranged in parallel and connected by a connecting member. The vertical connecting arm and the vertical material conveying pipe are telescopic structures with adjustable lengths.

[0012] Further, it further includes an operation room, and the operation room is slidably arranged on the horizontal cantilever beam through a sliding carriage.

[0013] Further, the operation room is a folding structure, including a lower box body and an upper box body. The upper box body and the lower box body are connected by a hinge, and the upper box body can be turned downward to be juxtaposed with the lower box body in the horizontal direction.

[0014] Further, a camera is provided at the end of the horizontal cantilever beam where it is connected to the vertical connecting arm; and / or a camera is provided at the end of the vertical connecting arm where it is connected to the horizontal cantilever beam.

[0015] Further, the walking trolley is a wheeled walking trolley or a crawler-type walking trolley.

[0016] Further, the vertical connecting arm is a telescopic connecting arm. The vertical connecting arm is connected to the horizontal cantilever beam through a hinge seat and can rotate around the hinge shaft on the hinge seat. The other end of the vertical connecting arm is connected to a fixing plate, and the suction working head is arranged on the fixing plate. A winch is arranged on the horizontal cantilever beam, and the rope of the winch is connected to the fixing plate;

[0017] Alternatively, the vertical connecting arm is a parallel link structure. One end of the parallel link structure is connected to the horizontal cantilever beam, and the other end is connected to a fixing plate. The suction working head is arranged on the fixing plate. A winch is arranged on the horizontal cantilever beam, and the rope of the winch is connected to the fixing plate.

[0018] The present invention also provides an operation method for the above-mentioned bulk material unloading device for train carriages, including the following processes:

[0019] The walking trolley moves to the operation position beside the train, and the lifting column of the rack is adjusted to a suitable height. At this height, both the horizontal cantilever beam and the horizontal material conveying pipe are not higher than the safety height below the electric traction catenary, and the vertical connecting arm is in a folded state, and together with the suction working head, it is folded below the horizontal cantilever beam. The horizontal cantilever beam, the vertical connecting arm, and the suction working head together with the vertical connecting arm rotated to the horizontal state extend into the space above the electric traction catenary and the train carriage, and the slewing platform drives the horizontal cantilever beam and the horizontal material conveying pipe to rotate horizontally to the left or right to adjust the position;

[0020] The vertical connecting arm rotates around the second axis to unfold the vertical connecting arm, and cooperates with the rotation of the vertical connecting arm around the first axis to adjust the angle and position of the material suction working head, and vacuum suction and transportation of the materials in the carriage are carried out;

[0021] After the discharging is completed, the vertical connecting arm rotates to a folded state where it is horizontally folded under the horizontal cantilever beam. The horizontal cantilever beam drives the vertical connecting arm and the vertical material conveying pipe to rotate out above the carriage, and the walking trolley moves to the next carriage for discharging.

[0022] As can be seen from the above technical solutions, the present invention uses a walking trolley as the base of the discharging device, sets a horizontal cantilever beam that can rotate on a horizontal plane, and uses a horizontal rotation method to rotate the vertical connecting arm with a material suction working head above the carriage, which will not interfere with the electric traction catenary above the carriage. The material suction working head is arranged on the vertical connecting arm that is movably connected to the horizontal cantilever beam. The vertical connecting arm can rotate relative to the horizontal cantilever beam around the first axis and the second axis. This not only facilitates the horizontal cantilever beam to drive the vertical connecting arm into the working space above the carriage and avoid interference with the electric traction catenary above the carriage, but also can adjust the position of the material suction working head according to the stacking situation of the materials in the carriage, and can extract materials at all positions in the carriage, with thorough discharging. Moreover, the walking trolley is convenient to move, does not require the carriage to be moved to a specific area for discharging, and is more flexible to use. The present invention can not only be used for vacuum extraction and discharging operations under the electric traction catenary at electric traction railway stations and freight yards, but also can be used at ordinary railway stations and freight yards. Description of the Drawings

[0023] In order to more clearly illustrate the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0024] Figure 1 It is a schematic structural diagram of an embodiment of the present invention;

[0025] Figure 2 It is a schematic structural diagram of another angle of an embodiment of the present invention;

[0026] Figure 3 It is a schematic diagram when the vertical telescopic connecting arm, the vertical telescopic suction pipe and the horizontal telescopic cantilever beam of the embodiment of the present invention are in a perpendicular state;

[0027] Figure 4 It is a schematic diagram when the vertical telescopic connecting arm and the vertical telescopic suction pipe swing relative to the horizontal telescopic cantilever beam to an inclined state in the embodiment of the present invention;

[0028] Figure 5 Schematic diagram when the vertical telescopic connecting arm and the vertical telescopic suction pipe of the embodiment of the present invention swing to another inclined state relative to the horizontal telescopic cantilever beam;

[0029] Figure 6 Schematic diagram when the operation room of the embodiment of the present invention is not folded;

[0030] Figure 7 Schematic diagram of another angle when the operation room of the embodiment of the present invention is not folded;

[0031] Figure 8 Schematic diagram when the operation room of the embodiment of the present invention is folded;

[0032] Figure 9 Schematic diagram of another angle when the operation room of the embodiment of the present invention is folded;

[0033] Figure 10 Schematic diagram of the structure of another embodiment of the present invention;

[0034] Figure 11 Schematic diagram of the structure when the material suction component of another embodiment of the present invention is folded;

[0035] Figure 12 Schematic diagram of the structure of yet another embodiment of the present invention;

[0036] Figure 13 Schematic diagram of the structure when the material suction component of yet another embodiment of the present invention is folded.

[0037] The following further elaborates on the specific embodiments of the present invention with reference to the accompanying drawings. Specific Embodiments

[0038] The present invention will be described in detail below with reference to the accompanying drawings. When describing the embodiments of the present invention in detail, for the convenience of explanation, the drawings showing the device structure will be enlarged locally not in accordance with the general ratio, and the schematic diagrams are only examples and should not limit the scope of protection of the present invention here. It should be noted that the drawings are in a simplified form and all use non-precise ratios, only for the purpose of facilitating and clearly assisting in explaining the embodiments of the present invention. At the same time, in the description of the present application, terms such as "first" and "second" are only used for differentiating descriptions and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features; terms such as "front", "back", "bottom", "upper", and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0039] As shown Figure 1 and Figure 2 shown, the bulk material discharging device of this embodiment includes a traveling trolley 1, a frame lifting column 2, a rotary platform 3, a horizontal cantilever beam 4, a horizontal conveying pipe 5, a vertical connecting arm 6, a vertical conveying pipe 7, a material suction working head 8, a hydraulic pump station 9 and an operation room 10.

[0040] A traveling device is arranged at the bottom of the traveling trolley 1. The traveling device can be traveling wheels, a traveling track, etc. The discharging device can be moved through the traveling device, without being limited to a specific moving range such as a track, and it is convenient to transfer the site during discharging. The frame lifting column 2 is arranged on the traveling trolley 1. The frame lifting column 2 of this embodiment is a telescopic sliding sleeve type column that can be telescoped in the vertical direction. The rotary platform 3 of this embodiment is arranged at the top of the frame lifting column 2. The horizontal cantilever beam 4 and the horizontal conveying pipe 5 are arranged on the rotary platform 3. The rotary platform 3 is used to realize the rotation of the horizontal cantilever beam 4 and the horizontal conveying pipe 5 in the horizontal direction. When the rotary platform 3 rotates, it drives the horizontal cantilever beam 4 and the horizontal conveying pipe 5 arranged thereon to rotate horizontally to the left or right around the axis of the frame lifting column 2. The rotation of the rotary platform 3 can be realized by conventional driving units such as hydraulic cylinders and motors. The telescoping of the frame lifting column 2 can also be realized by conventional driving units such as hydraulic cylinders and motors.

[0041] The horizontal cantilever beam 4 and the horizontal conveying pipe 5 are arranged in parallel and are connected by a connecting piece. The horizontal cantilever beam 4 and the horizontal conveying pipe 5 of this embodiment are both telescopic structures with adjustable lengths. The horizontal cantilever beam 4 can control the telescoping of the horizontal conveying pipe 5. When the horizontal cantilever beam 4 extends, it can drive the horizontal conveying pipe 5 to extend forward together. When the horizontal cantilever beam 4 contracts, it can drive the horizontal conveying pipe 5 to retract, so as to facilitate the transfer transportation of the discharging device. The rotary platform 3 is used to realize the horizontal rotation of the horizontal cantilever beam 4 and the horizontal conveying pipe 5. In this embodiment, the rotary platform 3 is arranged at the top of the frame lifting column 2 and directly drives the horizontal cantilever beam 4 and the horizontal conveying pipe 5 to rotate. In other embodiments, the rotary platform can also be arranged at the bottom of the frame lifting column, and the horizontal cantilever beam and the horizontal conveying pipe are arranged at the top of the frame lifting column. The rotary platform drives the frame lifting column to rotate around its own axis, thereby indirectly driving the horizontal cantilever beam and the horizontal conveying pipe arranged on the frame lifting column to rotate.

[0042] In addition to controlling the telescoping of the horizontal conveying pipe 5, the horizontal cantilever beam 4 also serves as a support arm. The vertical connecting arm 6 is arranged at the free end of the horizontal cantilever beam 4, and the position of the vertical connecting arm 6 can also be adjusted by the telescoping of the horizontal cantilever beam 4.

[0043] Optionally, the horizontal cantilever beam 4 of this embodiment also serves as the mounting rack for the operation chamber 10. The operation chamber 10 is slidably arranged on the horizontal cantilever beam 4 through a carriage 11. The horizontal cantilever beam 4 of this embodiment is a sleeve-type telescopic cantilever. The carriage 11 is arranged on the outermost sleeve of the horizontal cantilever beam 4. The carriage 11 can move along the horizontal cantilever beam 4, so as to adjust the position of the operation chamber 10 arranged on the carriage 11. The horizontal sliding of the carriage 11 is controlled by the operation chamber translation drive unit 12. The operation chamber translation drive unit 12 of this embodiment is a hydraulic cylinder. The hydraulic cylinder is fixed to the outermost sleeve of the horizontal cantilever beam 4, and the piston rod is connected to the carriage 11. When the hydraulic cylinder works, the movement of the carriage 11 is controlled by the telescopic movement of the piston rod, so as to control the movement of the operation chamber 10.

[0044] Optionally, the horizontal cantilever beam 4 of this embodiment is arranged on the slewing platform 3 through a hinge seat 13. A hinge shaft (not labeled) is arranged on the hinge seat 13. The axial direction of the hinge shaft is the horizontal direction. The horizontal cantilever beam 4 can rotate around the hinge shaft, that is, the horizontal cantilever beam 4 can be rotated in the vertical plane through the hinge seat 13, so as to realize the folding of the horizontal cantilever beam 4. In the working state, the horizontal cantilever beam 4 is rotated to the horizontal state. During the transfer, the horizontal cantilever beam 4 can be rotated to a relatively vertical or inclined state, overcoming the problem that the horizontal state occupies a large space. The folding of the horizontal cantilever beam 4 is realized through the control of the folding hydraulic cylinder 14. The folding hydraulic cylinder 15 is arranged on the slewing platform 3, and the piston rod is connected to the horizontal telescopic cantilever beam 4. When the folding hydraulic cylinder 15 works, it drives the horizontal telescopic cantilever beam 4 to rotate around the axial direction of the hinge shaft on the hinge seat 13.

[0045] The vertical connecting arm 6 and the hydraulic pump station 9 are respectively arranged at the front end and the tail end of the horizontal cantilever beam 4. The hydraulic pump station 9 is used to provide hydraulic power to ensure the normal operation of each hydraulic drive unit. In this embodiment, the hydraulic pump station 9 and the vertical connecting arm 6 are respectively arranged at both ends of the horizontal cantilever beam 4, and the hydraulic pump station 9 can be used as a counterweight, so as to eliminate the setting of counterweight components, which not only reduces the cost, but also makes the structure simpler and more compact.

[0046] The vertical connecting arm 6 and the horizontal cantilever beam 4 are movably connected, and the vertical connecting arm 6 can rotate relative to the horizontal cantilever beam 4 about the first axial direction a and the second axial direction b. The first axial direction a is parallel to the horizontal cantilever beam 4, the second axial direction b is perpendicular to the horizontal cantilever beam 4, the first axial direction a and the second axial direction b are in an orthogonal relationship, and both the first axial direction a and the second axial direction b extend in the horizontal direction. The vertical connecting arm 6 of the present embodiment is connected to the horizontal telescopic cantilever beam 4 through the first swing oil cylinder 15 and the second swing oil cylinder 16. Among them, the axis of the swing output shaft of the first swing oil cylinder 15 is consistent with the second axial direction b, and the axis of the swing shaft of the second swing oil cylinder 16 is consistent with the first axial direction a. The first swing oil cylinder 15 is used to realize the rotation about the second axial direction b, and the second swing oil cylinder 16 is used to realize the rotation about the first axial direction a. Through the swing oil cylinders with the two swing shafts arranged orthogonally, the vertical connecting arm 6 can swing relative to the horizontal cantilever beam 4 about the first axial direction a and the second axial direction b, realizing that the vertical connecting arm 6 swings at different angles in different directions, so that the material suction working head can reach the corners around the bottom in the carriage. In addition to using two swing oil cylinders to control the swing of the vertical connecting arm, the vertical connecting arm can also be connected to the horizontal cantilever beam through other hinge structures such as universal joints or hinge seats, and the swing of the vertical connecting arm can be controlled by driving components such as hydraulic cylinders / electric cylinders.

[0047] When the vertical connecting arm 6 rotates about the second axial direction b, it can be folded below the horizontal cantilever beam 4 (such as Figure 2 , Figure 6 ). This folded state can facilitate the horizontal cantilever beam 4 and the vertical connecting arm 6 to extend into the space below the electric traction catenary, and can also cooperate with the lifting of the lifting column 2 of the frame to adjust the heights of the horizontal cantilever beam 4 and the vertical connecting arm 6 to avoid interference with the electric traction catenary. When the vertical connecting arm 6 is above the carriage, the rotation and unfolding of the vertical connecting arm 6 about the second axial direction b can be controlled for unloading operations. When the vertical connecting arm 6 rotates from the folded state about the second axial direction b until its distal end (the end of the vertical connecting arm where the material suction working head is provided) leaves the horizontal cantilever beam 4, it is in the unfolded state. The angle range of the rotation of the vertical connecting arm 6 about the second axial direction b can be 0 to 180°, and when it is 0°, it is in the folded state folded below the horizontal cantilever beam 4.

[0048] As a preferred embodiment, the vertical connecting arm 6 of this embodiment can also rotate around the first axial direction a. When the vertical connecting arm 6 rotates around the first axial direction a, the position of the vertical connecting arm 6 in the length direction of the carriage can be adjusted. When the vertical connecting arm 6 rotates around the second axial direction b, the position of the vertical connecting arm 6 in the width direction of the carriage can be adjusted. Through the adjustment of these two degrees of freedom, not only can the interference with the electric traction catenary be better avoided, but also the vertical connecting arm 6 can swing in the front, back, left, and right directions and extend to various positions inside the carriage to suck out the materials at the corners of the carriage cleanly. When the vertical connecting arm 5 rotates around the first axial direction a, it can rotate to a position where its distal end is located on both sides of the horizontal cantilever beam 4. When the vertical connecting arm 5 rotates around the first axial direction a, it can at least rotate to a horizontal position, such as Figure 1 .

[0049] The vertical feeding pipe 7 and the vertical connecting arm 6 of this embodiment are also telescopic structures with adjustable lengths. The vertical feeding pipe 7 and the vertical connecting arm 6 are arranged in parallel and are connected by a connecting piece. The vertical connecting arm 6 can control the telescoping of the vertical feeding pipe 7. When the vertical connecting arm 6 extends, it drives the vertical feeding pipe 7 to extend forward together. When the vertical connecting arm 6 contracts, it drives the vertical feeding pipe 7 to retract. The vertical feeding pipe 7 is communicated with the horizontal feeding pipe 5. The vertical feeding pipe 7 and the horizontal feeding pipe 5 can be connected by a folding elbow or a hose. The vertical connecting arm 6 of this embodiment, like the horizontal cantilever beam 4, is a sliding sleeve type telescopic arm structure.

[0050] The material suction working head 8 is arranged at the free end of the vertical connecting arm 6 (the end opposite to the connection end with the horizontal cantilever beam). The material suction working head 8 is communicated with one end of the vertical feeding pipe 7. The materials sucked by the material suction working head 8 through the vacuum adsorption action are transported out of the carriage through the vertical feeding pipe 7 and the horizontal feeding pipe 5. The material suction working head 8 of this embodiment is arranged at the end of the vertical connecting arm 6 and forms a rigid material suction component with the vertical connecting arm 6. The material suction component and the horizontal cantilever beam are not connected by a flexible connection or a flexible connection formed by a hose or the like, ensuring the strength. The rigid material suction component (vertical connecting arm) and the horizontal cantilever beam are connected by a swing oil cylinder or connected and controlled to swing through a hinge structure + hydraulic cylinder / electric cylinder / winch / motor, and the material suction component (vertical connecting arm) can be controlled to swing in the front, back, left, and right directions to realize the all-round extraction of materials. When the vertical connecting arm 6 is folded below the horizontal cantilever beam 4, the overall maximum height h (the maximum height value h) of the horizontal cantilever beam 4, the vertical connecting arm 6, and the material suction working head 8 in the folded state is less than 1.5 meters. In this way, when the horizontal cantilever beam 4 carries the vertical connecting arm 6 and the material suction working head 8 and extends into the upper part of the carriage in the folded state, it will not interfere with the electric traction catenary located above the carriage. When the vertical connecting arm 6 rotates around the first axial direction a to a horizontal state, the overall maximum height h of the horizontal cantilever beam 4, the vertical connecting arm 6, and the material suction working head 8 is less than 1.5 meters( Figure 1 ).

[0051] After the bulk materials are loaded into the vehicle, they may become more and more compacted during transportation. Only by negative pressure suction, it may be difficult to suck out larger lumps, resulting in incomplete unloading. To solve the above problems, the suction working head 8 of this embodiment includes a negative pressure suction nozzle 8a and an arch-breaking structure 8b arranged outside the negative pressure suction nozzle 8a. The negative pressure suction nozzle 8a is a tubular structure and can perform negative pressure vacuum suction under the action of an external negative pressure source (not shown). The arch-breaking structure 8b is arranged on the outer wall of the negative pressure suction nozzle 8a. The negative pressure suction nozzle 8a can rotate around its own axis. When rotating, the arch-breaking structure 8b on its outer wall can break the materials, loosen the piled-up and lumped materials, so as to facilitate the suction of the negative pressure suction nozzle 8a and prevent the lumped materials from not being sucked by the negative pressure suction nozzle 8a, which affects the unloading effect. When the unloading device is used for unloading bulk materials such as grain, there is no need for an arch-breaking structure, and unloading can be directly carried out through the negative pressure suction nozzle.

[0052] The present invention also provides an operation method for the bulk material unloading device of the train carriage described above. The operation method of the bulk material unloading device of the train carriage in this embodiment will be described below with reference to the accompanying drawings. This operation method includes the following processes:

[0053] As Figure 2 shown, when unloading the materials in the train carriage, the walking trolley 1 moves to the vicinity of the carriage; then the rack lifting column 2 rises to an appropriate height at which the horizontal cantilever beam 4 and the horizontal conveying pipe 5 are not higher than the electric traction catenary 100; at this time, the vertical connecting arm 6 is in a folded state and, together with the suction working head 8, is folded below the horizontal cantilever beam 4. The horizontal cantilever beam 4, the vertical connecting arm 6 and the suction working head 8 together extend into the space above the electric traction catenary and the train carriage. The slewing platform 3 can drive the horizontal cantilever beam 4 and the horizontal conveying pipe 5 to rotate horizontally left or right to adjust the position. Since the horizontal cantilever beam 4 and the horizontal conveying pipe 5 are not higher than the electric traction catenary 100, the horizontal rotation of the horizontal cantilever beam 4 and the horizontal conveying pipe 5 will not interfere with the electric traction catenary 100. The vertical connecting arm 6 can rotate around the second axis b to a horizontal state folded below the horizontal cantilever beam 4 (such as Figure 2 、 Figure 6 state) and enter the space above the electric traction catenary and the train carriage, or it can rotate around the first axis a to the state shown in Figure 1 and enter the space above the electric traction catenary and the train carriage.

[0054] After the horizontal cantilever beam 4, the vertical connecting arm 6 and the suction working head 8 are rotated to the top of the carriage, the vertical connecting arm 6 is rotated around the second axial direction b, the vertical connecting arm 6 is unfolded, and the vertical connecting arm 6 can be coordinated with the vertical connecting arm 6 to rotate around the first axial direction a, so that the vertical connecting arm 6 and the vertical conveying pipe 7 are adjusted to a suitable angle and length, and the material in the carriage 200 is vacuum-sucked and conveyed by the suction working head 8. The adjustment range of the vertical connecting arm 6 and the vertical conveying pipe 7 can be adjusted according to the position of the material, such as being adjustable to Figure 1 or Figure 3 or Figure 4 or Figure 5 The state shown is flexibly adjusted according to the situation of the materials in the carriage 200 so as to completely extract the materials in the carriage.

[0055] After unloading is completed, the vertical connecting arm 6 and the vertical material conveying pipe 7 are adjusted to a horizontal folded state under the horizontal cantilever beam 4, and then the rotating platform 3 rotates, driving the vertical connecting arm 6 and the vertical material conveying pipe 7 to rotate out of the top of the carriage 200 through the horizontal cantilever beam 4, and the walking trolley 1 carries the unloading device to the next carriage for unloading.

[0056] In order to reduce the transportation volume and facilitate transportation, preferably, the operating room 10 is configured as a foldable structure. Figure 6 , Figure 7 , Figure 8 and Figure 9 As shown, the operating room 10 includes a lower body 10-1 and an upper body 10-2. The lower body 10-1 is arranged on the slide 11. The upper body 10-2 is movably connected to the lower body 10-1 through hinges. The upper body 10-2 can be flipped downward to be placed side by side with the lower body 10-1. When the upper body 10-2 is flipped upward, it can form a complete operating room 10 with the lower body 10-1. When flipped downward, the two bodies are side by side in the horizontal direction, which can reduce the overall height of the operating room 10.

[0057] In the aforementioned embodiment, in order to improve the adjustment flexibility of the working range of the suction work head 8, a horizontal telescopic cantilever beam and a vertical telescopic connecting arm, as well as a horizontal telescopic material delivery pipe and a vertical telescopic material delivery pipe are used. However, in other embodiments, the horizontal cantilever beam and the vertical connecting arm can also be fixed in length, that is, non-retractable. This makes the structure simpler and the cost lower. However, this non-retractable structure will reduce the flexibility of adjusting the position of the suction work head, and the working range is limited. Therefore, it is preferred to use a retractable horizontal telescopic cantilever beam and a vertical telescopic connecting arm. In addition to using a retractable tube body, the horizontal / vertical material delivery pipe can also use a hose, which can also achieve the effect of adjusting the length with the telescopic expansion and contraction of the horizontal telescopic cantilever beam and the vertical telescopic cantilever beam.

[0058] like Figure 5As shown, in order to facilitate observing whether the material has been completely extracted, a camera 17 may be provided at the end of the horizontal cantilever beam 4 where it is connected to the vertical connecting arm 6, and / or at the end of the vertical connecting arm 6 where it is connected to the horizontal cantilever beam 4. In this embodiment, cameras 17 are provided at both the end of the horizontal cantilever beam 4 where it is connected to the vertical connecting arm 6 and the end of the vertical connecting arm 6 where it is connected to the horizontal cantilever beam 4. Through the camera 17, the position of the material suction head 8 can be observed, so as to conveniently adjust the position of the material suction head 8 according to the situation of the material in the carriage, extract the material, and convey it outwards.

[0059] As Figure 10 and Figure 11 shown, as a deformation, the difference between this embodiment and the previous embodiment is that the vertical connecting arm 6 is connected to the horizontal cantilever beam 4 through a hinge seat 13, and the vertical connecting arm 6 can rotate around the hinge shaft on the hinge seat 13. The vertical connecting arm 6 is a telescopic connecting arm, that is, its length can be adjusted.

[0060] The material suction head 8 is arranged on the fixing plate 18, and the fixing plate 18 is connected to the end of the vertical connecting arm 6. When the vertical connecting arm 6 expands and contracts or rotates around the hinge shaft on the hinge seat 13, it can drive the fixing plate 18, that is, the material suction head 8 arranged on the fixing plate 18, to move, so as to continue to extract the material at different positions in the carriage.

[0061] In this embodiment, a winch 19 is used to control the movement of the material suction head 8. The winch 19 is fixed on the horizontal cantilever beam 3. The free end of the steel wire rope 20 (rope) of the winch 19 is connected to the fixing plate 18. By adjusting the change in the length of the steel wire rope 20, the vertical connecting arm 6 rotates around the hinge shaft on the hinge seat 13, so as to adjust the angle of the material suction head 8 and realize the extension or folding of the vertical connecting arm 6 (material suction component).

[0062] Further, the winch 19 can be arranged on a telescopic sliding sleeve 21 fixed on the horizontal cantilever beam 4. The expansion and contraction of the telescopic sliding sleeve 21 makes the position of the winch 19 variable, so as to meet the need for adjusting the angle of the material suction head 8 and realize the extraction of materials in all directions and at various angles. In this embodiment, a camera 17 is provided at the end of the horizontal cantilever beam 4.

[0063] Figure 12 and Figure 13 For another deformed embodiment, the difference between this embodiment and the previous embodiment is that the vertical connecting arm 6 is a parallel link structure, and the two ends of the parallel link are respectively connected to the fixing plate 18 and the end of the horizontal cantilever beam 4. The parallel link in this embodiment is a parallelogram link structure. The end of the steel wire rope 20 of the winch 19 is connected to the fixing plate 18. By releasing or retracting the steel wire rope 20, the winch 19 can adjust the position of the material suction head 8 and extract the materials at different positions in the carriage.

[0064] The foregoing description of the disclosed embodiments enables those skilled in the art to practice or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. Bulk material unloading device for train carriages under the electric traction catenary, characterized in that, Comprising: A walking trolley; A frame lifting column disposed on the walking trolley; A horizontal cantilever beam disposed at the top of the frame lifting column, and a horizontal feeding pipe is disposed on the horizontal cantilever beam; A vertical connecting arm movably connected to the end of the horizontal cantilever beam, a vertical feeding pipe is disposed on the vertical connecting arm, and the vertical feeding pipe is communicated with the horizontal feeding pipe; the vertical connecting arm can rotate relative to the horizontal cantilever beam around a first axis and a second axis, the first axis extends horizontally and is parallel to the horizontal cantilever beam, the second axis extends horizontally and is perpendicular to the horizontal cantilever beam, when the vertical connecting arm rotates around the second axis, it can rotate to a folded state folded under the horizontal cantilever beam or an unfolded state where the distal end is away from the horizontal cantilever beam, and when the vertical connecting arm rotates around the first axis, it can rotate to a state where the distal end is located on the left and right sides of the horizontal cantilever beam; A suction working head disposed at the end of the vertical connecting arm, the suction working head and the vertical connecting arm form a rigid suction component, the suction working head is communicated with the vertical feeding pipe, and the suction working head includes a negative pressure suction nozzle, and the negative pressure suction nozzle is communicated with the vertical feeding pipe; A slewing platform for controlling the horizontal rotation of the horizontal cantilever beam around the axis of the frame lifting column.

2. The bulk material unloading device for a train carriage under an electric traction catenary as described in claim 1, wherein: The vertical connecting arm is connected to the horizontal telescopic cantilever beam through a first swing oil cylinder and a second swing oil cylinder, the first swing oil cylinder is used to control the rotation of the vertical connecting arm around the second axis, the second swing oil cylinder is used to control the rotation of the vertical connecting arm around the first axis, and the first axis and the second axis are orthogonal.

3. The bulk material unloading device for train carriages under the electric traction catenary according to claim 1, characterized in that: The slewing platform is disposed at the top of the frame lifting column, the horizontal cantilever beam is disposed on the slewing platform through a hinge seat, a horizontal hinge shaft is disposed on the hinge seat, and the horizontal cantilever beam can rotate around the hinge shaft in a vertical plane.

4. The bulk material unloading device for train carriages under the electric traction catenary according to claim 1, characterized in that: When the vertical connecting arm rotates to a horizontal state, the overall maximum height h of the horizontal cantilever beam, the vertical connecting arm and the suction working head is less than 1.5 meters.

5. The bulk material unloading device for train carriages under the electric traction catenary according to claim 1, characterized in that: A hydraulic pump station is disposed at the other end of the horizontal cantilever beam, and the hydraulic pump station and the vertical connecting arm are respectively located at both ends of the horizontal cantilever beam.

6. The bulk material unloading device for train carriages under the electric traction catenary according to claim 1, characterized in that: The horizontal cantilever beam and the horizontal feeding pipe are arranged in parallel and connected through a connecting member, and the horizontal cantilever beam and the horizontal feeding pipe are telescopic structures with adjustable lengths; And / or, the vertical connecting arm and the vertical feeding pipe are arranged in parallel and connected through a connecting member, and the vertical connecting arm and the vertical feeding pipe are telescopic structures with adjustable lengths.

7. The bulk material unloading device for train carriages under the electric traction catenary according to claim 1, characterized in that: It further includes an operation room, and the operation room is slidably disposed on the horizontal cantilever beam through a sliding frame.

8. The bulk material unloading device for a train carriage under an electric traction catenary according to claim 1, characterized in that: A camera is disposed at the end of the horizontal cantilever beam connected to the vertical connecting arm; And / or, a camera is disposed at the end of the vertical connecting arm connected to the horizontal cantilever beam.

9. The bulk material unloading device for train carriages under the electric traction catenary according to claim 1, characterized in that: The vertical connecting arm is a telescopic connecting arm. The vertical connecting arm is connected to the horizontal cantilever beam through a hinge seat and can rotate around the hinge axis on the hinge seat. The other end of the vertical connecting arm is connected to a fixing plate, and the material suction working head is arranged on the fixing plate. A hoist is arranged on the horizontal cantilever beam, and the rope of the hoist is connected to the fixing plate; Alternatively, the vertical connecting arm is a parallel link structure. One end of the parallel link structure is connected to the horizontal cantilever beam, and the other end is connected to a fixing plate. The material suction working head is arranged on the fixing plate. A hoist is arranged on the horizontal cantilever beam, and the rope of the hoist is connected to the fixing plate.

10. The operation method of the bulk material unloading device for train carriages under the electric traction catenary according to any one of claims 1 to 9, characterized in that, It includes the following processes: The walking trolley moves to the working position beside the train. The lifting column of the frame is adjusted to a suitable height. At this height, both the horizontal cantilever beam and the horizontal material conveying pipe are not higher than the safe height below the electric traction catenary, and the vertical connecting arm is in a folded state and folds together with the material suction working head below the horizontal cantilever beam. The horizontal cantilever beam, the vertical connecting arm, and the material suction working head extend into the space above the electric traction catenary and the train carriage in the state where the vertical connecting arm rotates to the horizontal. The slewing platform drives the horizontal cantilever beam and the horizontal material conveying pipe to rotate horizontally to the left or right to adjust the position; The vertical connecting arm rotates around the second axis to unfold the vertical connecting arm, and cooperates with the rotation of the vertical connecting arm around the first axis to adjust the angle and position of the material suction working head, and vacuum suction and convey the materials in the carriage; After the discharging is completed, the vertical connecting arm rotates to the horizontal and folds in the folded state below the horizontal cantilever beam. The horizontal cantilever beam drives the vertical connecting arm and the vertical material conveying pipe to rotate out of the upper part of the carriage, and the walking trolley goes to the next carriage for discharging.

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