Spiral car unloader

Abstract

A spiral car unloader belongs to the technical field of car unloaders. The device comprises a door-shaped frame and a cross beam installed in the door-shaped frame in a sliding mode, two clearing and unloading mechanisms are installed on the cross beam, each clearing and unloading mechanism comprises a supporting arm, a connecting base, a hydraulic slewing bearing, a rotating mechanism installing base and a spiral rotating mechanism, the top end of each supporting arm is fixedly installed on the cross beam through a bolt, and the top end of each connecting base is fixedly connected with the corresponding hydraulic slewing bearing. A connecting seat is mounted at the bottom of the support arm, a rotating mechanism mounting seat is mounted on the connecting seat through a hydraulic slewing bearing, and the spiral rotating mechanism is mounted on the rotating mechanism mounting seat. According to the utility model, the material clearing and unloading efficiency is improved.

Description

Technical Field

[0001] This utility model relates to a bulk material unloading device for train carriages, belonging to the field of unloading machine technology. Background Technology

[0002] Screw unloaders are mainly used to unload bulk materials from train carriages. The principle is to use a rotating screw shaft and the propeller blades on the shaft to generate rotational thrust on the material in the carriage. Under the action of thrust, the bulk material is unloaded from the middle to one side or both sides along the direction of the screw.

[0003] For example, the utility model patent with publication number CN217322524U discloses a spiral unloader, which generates axial force through the rotation of a rotating shaft, and then throws the material in the car body to both sides and out of the car body door through the rotating shaft.

[0004] However, in practical applications, the following significant drawbacks have been found in existing screw unloaders with horizontally arranged screw shafts:

[0005] 1. Relatively low unloading efficiency: When unloading materials with a horizontal auger, a single auger unloading method is generally adopted. During the unloading process, when the horizontal auger moves parallel to the length of the car body, its axis is perpendicular to the width of the car body. This means that a single movement can only cover a limited width of material. In order to completely unload the material across the entire width of the car body, the working area needs to be gradually expanded by repeatedly moving the auger back and forth, which increases the unloading time by about 20%-30%.

[0006] 2. High power loss: When the screw shaft is arranged horizontally, the contact area between the blades and the material is unevenly distributed. During the initial cutting stage, a large resistance torque needs to be overcome, which leads to violent fluctuations in the load of the drive motor and increased energy consumption.

[0007] 3. Limited adaptability: When dealing with sticky materials (such as wet coal) or materials with irregular stacking shapes, horizontal screw conveyors are prone to problems such as material jamming and screw shaft misalignment, requiring frequent shutdowns for adjustment.

[0008] Therefore, in order to solve the above problems, it is urgent to propose an improved screw unloader. Utility Model Content

[0009] To address the aforementioned problems, this utility model proposes a spiral unloading machine to improve unloading efficiency.

[0010] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0011] A screw unloader includes: a gantry frame and a crossbeam slidably installed inside the gantry frame. Two unloading mechanisms are installed on the crossbeam. Each unloading mechanism includes a support arm, a connecting seat, a hydraulic slewing bearing, a rotating mechanism mounting seat, and a screw rotating mechanism. The top end of the support arm is fixedly installed on the crossbeam by bolts, and the bottom end of the support arm is installed with a connecting seat. The rotating mechanism mounting seat is connected to the connecting seat by a hydraulic slewing bearing, and the screw rotating mechanism is installed on the rotating mechanism mounting seat.

[0012] Preferably, the spiral rotation mechanism includes a geared motor, a main shaft mounting bracket, a bearing housing, a spiral main shaft, and propeller blades. The main shaft mounting bracket is welded to the rotation mechanism mounting base. The spiral main shaft is mounted on the main shaft mounting bracket via the bearing housing. Propeller blades are arranged on the spiral main shaft. The geared motor is mounted on the rotation mechanism mounting base. The output end of the geared motor passes through the rotation mechanism mounting base and is fixedly mounted with a first bevel gear. A second bevel gear is mounted on the spiral main shaft. The first bevel gear and the second bevel gear are meshed together.

[0013] Preferably, a fixed platform is installed inside the portal frame, a lifting motor is installed on the fixed platform, an active lifting sprocket is installed on the output shaft of the lifting motor, a sprocket support frame is fixedly installed on the top of the portal frame, a driven lifting sprocket is rotatably installed on the sprocket support frame, the active lifting sprocket drives the driven lifting sprocket to rotate through a chain, and a crossbeam is connected to the chain.

[0014] Preferably, sliders are installed at both ends of the crossbeam, and a longitudinally arranged lifting slide rail is installed on the wall of the portal frame, and the crossbeam slides on the lifting slide rail via the sliders.

[0015] Preferably, a traveling mechanism is installed at the bottom of the portal frame. The traveling mechanism includes a traveling motor, a gear reducer, and traveling wheels. The traveling wheels are connected to the traveling motor through the gear reducer, and the traveling motor is installed at the bottom of the portal frame.

[0016] The beneficial effects of this utility model are as follows:

[0017] 1. This utility model sets up two unloading mechanisms and uses the hydraulic slewing bearings in the two unloading mechanisms to adjust the spiral rotation mechanism, so that the spiral main shaft in the spiral rotation mechanism rotates. The two spiral main shafts form an eight-shaped structure. As the spiral main shafts rotate, the propeller blades installed on the main shafts push the bulk materials in the carriage to achieve unloading operations. In addition, within the eight-shaped area formed by the two spiral main shafts, the material in the larger opening area will also move to the smaller opening area due to its own weight. In this way, the unloading efficiency of the material is improved.

[0018] 2. When the unloading mechanism of this utility model is used to unload materials, the spiral main shaft and the propeller blade of the spiral rotating mechanism cut into the contact surface of the material in the unloading manner. During the cutting stage, the propeller blade is inserted into the bulk material at an angle, and the resistance that needs to be overcome is relatively small, the load on the drive motor is low, and the energy consumption is relatively small.

[0019] 3. When unloading sticky materials (such as wet coal), this utility model ensures that materials with irregular accumulation shapes are smoothly unloaded along the tangential direction of the unloading path because the working surface of the propeller and the material is inclined. This effectively overcomes problems such as material jamming and propeller shaft deviation, and avoids frequent shutdowns for adjustment. Attached Figure Description

[0020] Figure 1 This is the front view of this utility model;

[0021] Figure 2 This is a side view of the present invention;

[0022] Figure 3 yes Figure 1 Enlarged view of point A in the middle;

[0023] Figure 4 This is the front view of the unloading mechanism;

[0024] Figure 5 yes Figure 4 Enlarged view of point B in the middle;

[0025] Figure 6 This is a 3D view of a hydraulic slewing bearing;

[0026] Figure 7 This is a schematic diagram illustrating the principle of unloading materials from the carriage in Specific Implementation Method 1;

[0027] 1-Gantry frame, 2-Crossbeam, 3-Unloading mechanism, 4-Support arm, 5-Connecting seat, 6-Hydraulic slewing bearing, 7-Rotating mechanism mounting seat, 8-Screw rotating mechanism, 9-Gear motor, 10-Main shaft mounting frame, 11-Bearing seat, 12-Screw main shaft, 13-Propeller blade, 14-First bevel gear, 15-Second bevel gear, 16-Fixed platform, 17-Lifting motor, 18-Active lifting sprocket, 19-Driven lifting sprocket, 20-Chain, 21-Sprocket support frame, 22-Slider, 23-Lifting slide rail, 24-Traveling mechanism, 25-Traveling motor, 26-Gear reducer, 27-Traveling wheel. Detailed Implementation

[0028] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention. After reading the present invention, any modifications of the present invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims. Specific implementation method one:

[0030] like Figure 1 and Figure 2 As shown, this embodiment discloses a screw unloader, including: a gantry frame 1 and a crossbeam 2 slidably installed inside the gantry frame 1. Two unloading mechanisms 3 are installed on the crossbeam 2. Each unloading mechanism 3 includes a support arm 4, a connecting seat 5, and a hydraulic slewing bearing 6 (e.g., ...). Figure 6 As shown), the rotating mechanism mounting base 7 and the helical rotating mechanism 8 are connected. The top end of the support arm 4 is fixed to the crossbeam 2 by bolts, and the bottom of the support arm 4 is equipped with a connecting seat 5. The rotating mechanism mounting base 7 is connected to the connecting seat 5 by a hydraulic slewing bearing 6. Specifically, the outer ring of the rotating mechanism mounting base 7 and the hydraulic slewing bearing 6 are fixed to each other by bolts, and the inner ring of the connecting seat 5 and the hydraulic slewing bearing 6 are fixed to each other by bolts. The rotating mechanism mounting base 7 can rotate relative to the connecting seat 5 by rotating the hydraulic slewing bearing 6. The helical rotating mechanism 8 is mounted on the rotating mechanism mounting base 7.

[0031] Among them, the portal frame 1 is a gantry-type support structure assembled by welding steel structures. Its function is to provide a walking support platform for the spiral rotation mechanism 8. The bottom of the portal frame 1 is equipped with a walking mechanism 24, such as... Figure 3 As shown, the traveling mechanism 24 includes a traveling motor 25, a gear reducer 26, and traveling wheels 27. The traveling wheels 27 are connected to the traveling motor 25 via the gear reducer 26. The traveling motor 25 is installed at the bottom of the gantry frame 1. The traveling motor 25 drives the traveling wheels 27 to rotate. The traveling wheels 27 are installed on two parallel rails, allowing the entire gantry frame 1 to move along the rails. The two unloading mechanisms 3 installed on the crossbeam 2 of the gantry frame 1 can move to the designated unloading position under the movement of the gantry frame 1.

[0032] like Figure 2As shown, sliders 22 are installed at both ends of the crossbeam 2, and a longitudinally arranged lifting slide rail 23 is installed on the wall of the portal frame 1. The crossbeam 2 slides on the lifting slide rail 23 via the sliders 22. Specifically, a fixed platform 16 is installed inside the portal frame 1, and a lifting motor 17 is installed on the fixed platform 16. An active lifting sprocket 18 is installed on the output shaft of the lifting motor 17. A sprocket support frame 21 is fixedly installed on the top of the portal frame 1, and a driven lifting sprocket 19 is rotatably mounted on the sprocket support frame 21. The active lifting sprocket 18 drives the driven lifting sprocket 19 to rotate via a chain 20. The crossbeam 2 is connected to the chain 20 (the two ends of the chain 20 are respectively connected to the upper and lower ends of the crossbeam 2). In this way, the rotation of the lifting motor 17 installed on the fixed platform 16 drives the active lifting sprocket 18 to rotate, and the active lifting sprocket 18 drives the driven lifting sprocket 19 to rotate via the chain 20. The crossbeam 2 connected to the chain 20 achieves the lifting or lowering operation, thus completing the lifting function.

[0033] like Figure 4 , Figure 5 As shown, the spiral rotation mechanism 8 includes a geared motor 9, a main shaft mounting bracket 10, a bearing seat 11, a spiral main shaft 12, and a propeller blade 13. The main shaft mounting bracket 10 is welded to the rotation mechanism mounting base 7. The spiral main shaft 12 is mounted on the main shaft mounting bracket 10 via the bearing seat 11. The propeller blade 13 is arranged on the spiral main shaft 12. The geared motor 9 is mounted on the rotation mechanism mounting base 7. The inner ring of the hydraulic slewing bearing 6 is a hollow ring, allowing the geared motor 9 to be accommodated within the inner space of the inner ring. The output end of the geared motor 9 passes through the rotation mechanism mounting base 7 and is fixedly mounted with a first bevel gear 14. A second bevel gear 15 is mounted on the spiral main shaft 12, and the first bevel gear 14 and the second bevel gear 15 are meshed together. With this configuration, the geared motor 9 drives the spiral main shaft 12 to rotate via the first bevel gear 14 and the second bevel gear 15, thereby driving the propeller blade 13 on the spiral main shaft 12 to rotate.

[0034] The working principle of a spiral unloading machine in this embodiment is as follows: First, the traveling mechanism 24 drives the gantry frame 1 to travel above the train car to be unloaded. Second, the lifting motor 17 drives the crossbeam 2 to move downward, so that the two unloading mechanisms 3 installed on the crossbeam 2 act on the working surface of the material inside the train car. Third, the hydraulic slewing bearing 6 is adjusted to make the rotating mechanism mounting seat 7 rotate relative to the connecting seat 5, thereby causing the "spiral main shaft 12 and propeller blade 13" of the spiral rotating mechanism 8 to rotate. The two unloading mechanisms 3 on the crossbeam 2 are adjusted synchronously so that the "spiral main shaft 12 and propeller blade 13" of the two unloading mechanisms 3 are arranged in an inward V-shape (e.g., ...). Figure 7(As shown), then the reduction motor 9 is started, which drives the spiral main shaft 12 to rotate through the first bevel gear 14 and the second bevel gear 15. The propeller blades 13 on the shaft generate a rotational thrust on the material in the carriage. Under the action of the thrust, the bulk material is unloaded along the spiral direction. Since two unloading mechanisms 3 are set in this embodiment, under the joint action of the two tilting mechanisms, the propeller blades 13 of the two unloading mechanisms 3 enclose a unloading area. The two cooperate to throw the material to one side of the carriage to realize the unloading operation. In addition, within this area, the material will not be thrown out of the operation range (or the material thrown out by one propeller blade 13 is received and thrown out by the other propeller blade 13). This operation mode avoids the number of back-and-forth unloading movements and improves the unloading efficiency.

[0035] Furthermore, in this embodiment, when a screw unloader is used to unload material from both sides of a train car (i.e., there are discharge ports on both sides of the train car to unload the material from both sides), it is only necessary to adjust the hydraulic slewing bearing 6 to make the two screw main shafts 12 parallel, and use the rotational thrust generated by the propeller blades 13 to throw the material to both sides of the car, and then move back and forth in the car to unload the material from both sides of the train car.

[0036] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A spiral unloader comprising: The door-shaped frame (1) and the cross beam (2) slidingly installed inside the door-shaped frame (1) are characterized in that: two cleaning and unloading mechanisms (3) are installed on the cross beam (2), the cleaning and unloading mechanism (3) comprises a supporting arm (4), a connecting seat (5), a hydraulic rotary bearing (6), a rotating mechanism mounting seat (7) and a screw rotating mechanism (8), the top end of the supporting arm (4) is fixedly installed on the cross beam (2) through bolts, the bottom of the supporting arm (4) is provided with the connecting seat (5), the rotating mechanism mounting seat (7) is installed with the connecting seat (5) through the hydraulic rotary bearing (6), and the screw rotating mechanism (8) is installed on the rotating mechanism mounting seat (7).

2. A spiral unloader according to claim 1, characterized in that: The screw rotating mechanism (8) comprises a speed reducer motor (9), a main shaft mounting frame (10), a bearing seat (11), a screw main shaft (12) and a screw blade (13), the main shaft mounting frame (10) is welded and installed on the rotating mechanism mounting seat (7), the screw main shaft (12) is installed on the main shaft mounting frame (10) through the bearing seat (11), the screw main shaft (12) is provided with the screw blade (13), the speed reducer motor (9) is installed on the rotating mechanism mounting seat (7), the output end of the speed reducer motor (9) penetrates through the rotating mechanism mounting seat (7) and is fixedly installed with a first bevel gear (14), the screw main shaft (12) is provided with a second bevel gear (15), and the first bevel gear (14) and the second bevel gear (15) are meshed and installed.

3. A spiral unloader according to claim 1, characterized in that: The door-shaped frame (1) is provided with a fixed table (16), the fixed table (16) is provided with a lifting motor (17), a driving lifting sprocket (18) is installed on the output shaft of the lifting motor (17), a chain wheel support frame (21) is fixedly installed at the top of the door-shaped frame (1), a driven lifting sprocket (19) is rotatably installed on the chain wheel support frame (21), the driving lifting sprocket (18) drives the driven lifting sprocket (19) to rotate through a chain (20), and the chain (20) is connected with the cross beam (2).

4. A rail car unloader as defined in claim 3 wherein: The cross beam (2) is provided with a sliding block (22) at both ends, the wall body of the door-shaped frame (1) is provided with a vertically arranged lifting slide rail (23), and the cross beam (2) slides on the lifting slide rail (23) through the sliding block (22).

5. A spiral unloader according to claim 1, characterized in that: The bottom of the door-shaped frame (1) is provided with a walking mechanism (24), the walking mechanism (24) comprises a walking motor (25), a gear reducer (26) and a walking wheel (27), the walking wheel (27) is connected and installed with the walking motor (25) through the gear reducer (26), and the walking motor (25) is installed at the bottom of the door-shaped frame (1).

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