Arc track ship loader
Technical Field
The invention relates to the technical field of bulk fly ash transportation, in particular to an arc-shaped track ship loader.
Background
When materials such as cement, coal and the like are transported, the materials are not generally packaged in order to save the transportation cost and improve the loading and unloading speed, but are transported in a bulk mode. The ship loader is an important device for loading bulk materials on a wharf, and the bulk materials are received and transported by a conveyor belt and finally thrown onto a cargo ship by a chute. Ship loaders are widely used for loading large density bulk materials such as ore, coal, grain, etc.
The conventional ship loader adopts a conveyor belt material receiving and transporting mode, so that bulk materials are exposed in the whole loading process, and dust raising phenomenon can occur when the ship loader transports dust bulk materials such as fly ash and the like. Fly ash is a main solid waste material of a thermal power plant, a large amount of fly ash is not treated, the atmosphere is polluted, and strict control is required in transportation. However, there is no ship loader capable of effectively controlling fly ash flying dust at present, so that improvement of the conventional ship loader is needed to meet the use requirement.
Disclosure of Invention
The invention aims to provide the arc-shaped track ship loader, which can realize the transportation and shipment of dust bulk materials, especially fly ash, and can prevent the fly ash from leaking to the greatest extent to pollute the atmosphere during transportation, and the arc-shaped track design fixed on the front edge of a wharf is adopted, so that the ship loader can be directly connected with a power plant ash conveying pipe, and the transportation cost of the fly ash of a thermal power plant is reduced. Meanwhile, the invention can also be used for shipping and transporting bulk materials such as cement, limestone powder, coal dust and the like.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides an arc track shipment machine, fixed mounting is in the wharf front for shipment of thermal power factory fly ash is carried outward, including back supporting seat, main arm frame, buffering storage tank, preceding supporting seat, running gear, arc track, portal stand, portal pull rod, vice cantilever crane, main arm impeller feeder, vice arm impeller feeder, main arm screw conveyer, vice arm screw conveyer and swift current section of thick bamboo, back supporting seat is fixed to be located the wharf front edge, and the axis of supporting seat is the centre of a circle after the arc track and is arranged in between back supporting seat and the cargo ship berth behind the supporting seat, the bottom of preceding supporting seat is equipped with running gear, and running gear slides and locates on the arc track, and preceding supporting seat can follow arc track and slide.
The buffer storage tank is located back supporting seat top, consolidates through the bracing piece and supports, and the entry of buffer storage tank is connected with power plant's ash conveying pipe, and the fly ash that the combustion of power plant produced can be directly by power plant's ash conveying pipe and shipment machine connection, can save the transportation cost of transporting the fly ash by a wide margin, and the export of buffer storage tank is connected through main arm impeller feeder and main arm screw conveyer's one end, the top of back supporting seat is located to main arm impeller feeder, and main arm impeller feeder can rotate around the back supporting seat to drive main arm screw conveyer horizontal rotation, main arm screw conveyer's the other end is connected with auxiliary arm screw conveyer's one end through auxiliary arm impeller feeder, realizes the transportation of fly ash by main arm to auxiliary arm, auxiliary arm screw conveyer's the other end extends to the cargo berth, is connected with the swift current section of thick bamboo. The fly ash is pneumatically conveyed into a buffer storage tank of the ship loader by an ash conveying pipe of the power plant, sequentially passes through a main arm screw conveyor and an auxiliary arm screw conveyor, and finally enters a cargo ship through a chute, so that the ship loading process is completed.
The main arm support and the auxiliary arm support are of truss or slab beam structures, the main arm is erected on the outer side of the main arm screw conveyor, the auxiliary arm support is arranged on the outer side of the auxiliary arm screw conveyor, and support and necessary protection are provided for the main arm screw conveyor and the auxiliary arm screw conveyor.
The portal stand is L shaped steel frame, and the minor face level sets up, and long limit is vertical to be set up. The short side of portal stand rotates the top of locating preceding supporting seat, and portal stand can wind preceding supporting seat horizontal rotation. The auxiliary arm impeller feeder is arranged on the upright post of the portal frame and fixedly connected with the upright post of the portal frame, and can move along with the upright post of the portal frame. Because the auxiliary arm support extends to the berth of the cargo ship, the lower part is not supported, a portal pull rod is required to be fixed, so that the structural stability of the auxiliary arm support is ensured, one end of the portal pull rod is fixedly connected with the top end of the long side of the portal upright post, and the other end of the portal pull rod is connected with one end of the auxiliary arm support, which is far away from the front supporting seat.
The arc track ship loader further comprises a counterweight mechanism and a counterweight pull rod, wherein the counterweight mechanism comprises a counterweight rod and a counterweight block, one end of the counterweight rod is connected with the long side of the portal stand column, the other end of the counterweight rod is connected with the counterweight block, the counterweight block is far away from the auxiliary boom, one end of the counterweight pull rod is fixedly connected with the top end of the long side of the portal stand column, and the other end of the counterweight pull rod is connected with one end of the counterweight rod far away from the portal stand column. The balance weight mechanism and the balance weight pull rod are added, so that the stress balance of the upright post of the portal frame can be ensured, and the stability of the whole ship loader is further improved.
The arc-shaped track ship loader is characterized in that a vertical line between the rear supporting seat and the front line of the wharf is a standard machine bit line, and when the main arm screw conveyor and the auxiliary arm screw conveyor of the ship loader are both positioned on the standard machine bit line, the main arm screw conveyor and the auxiliary arm screw conveyor are stable in stress and safe in structure. The radius of the arc track is 8-10 m, specifically, the radius can be 9m, the arc vertex of the arc track is positioned on a standard machine bit line, the rotation angle range of the main arm screw conveyor is-45 DEG to +45 DEG of the standard machine bit line, the rotation angle range of the auxiliary arm screw conveyor is-90 DEG to +90 DEG of the standard machine bit line, the main arm screw conveyor and the auxiliary arm screw conveyor rotate within the range to cover the whole cargo ship, the fly ash is ensured to be uniformly loaded, the moving speed of the travelling mechanism along the arc track is 0-8m/min, and the moving speed of the travelling mechanism can be adjusted by the ship loader in actual work so as to adapt to different working requirements.
In the arc-shaped track ship loader, the chute is a telescopic chute, and is composed of multiple sections, and can stretch up and down along the vertical direction, and specifically, the stretching of the chute can be controlled through a steel wire rope. The chute can stretch in the vertical direction according to different water levels and draft degrees of the cargo ship, so that the chute outlet is ensured to be clung to the cargo ship as much as possible, and fly ash is prevented from being leaked due to falling impact. The chute is an important unloading device of the ship loader, and can be directly loaded on an open gray ship or connected with a professional sealed filling gray ship through a matched interface.
The arc track ship loader further comprises a main arm rotation driving mechanism and an auxiliary arm rotation driving mechanism, wherein the main arm rotation driving mechanism and the auxiliary arm rotation driving mechanism consist of a motor, a limit moment coupling and a speed reducer, and final stage transmission can adopt gear and gear ring transmission. The main arm rotation driving mechanism is arranged on the travelling mechanism and used for providing power for the travelling mechanism and driving the front supporting seat to move along the arc-shaped track so as to drive the main arm support to horizontally rotate around the rear supporting seat, and the auxiliary arm rotation driving mechanism is arranged at the joint of the short side of the upright post of the portal frame and the front supporting seat and used for providing power for the horizontal rotation of the upright post of the portal frame and the auxiliary arm screw conveyor around the front supporting seat. The arc track ship loader further comprises a standby rotary driving mechanism, and when the main arm rotary driving mechanism or the auxiliary arm rotary driving mechanism fails, the standby rotary driving mechanism can be utilized to enable the main arm support or the auxiliary arm support of the ship loader to return to a standard machine position line, so that safety and stability of the ship loader are ensured.
The arc-shaped track ship loader further comprises an air lock, and the air lock is arranged at the joint of the buffer storage tank and the main arm impeller feeder and the joint of the main arm screw conveyor and the auxiliary arm impeller feeder. The air lock can prevent the coal ash from being unsmooth in ash conveying caused by air channeling phenomenon when the coal ash enters the main arm impeller feeder from the buffer storage tank or enters the auxiliary arm impeller feeder from the main arm screw conveyor, and can ensure the smooth passing of the coal ash.
The arc-shaped track ship loader further comprises two cloth bag dust collectors, wherein one cloth bag dust collector is arranged above the main arm support and is connected with the chute through a pipeline, and the other cloth bag dust collector is arranged above the buffer storage tank. When the ash conveying pipe of the power plant conveys ash into the buffer storage tank and the chute is used for discharging, the fly ash is lifted up due to falling impact, a bag-type dust remover is required to be arranged for preventing the fly ash from leaking and polluting the atmosphere, dust-containing air in the system is filtered and absorbed, and the ash is discharged after reaching the standard. The auxiliary arm support is fixed by the portal pull rod, and the bag dust remover for absorbing dust of the sliding drum is arranged on the main arm support, so that the structure stability of the auxiliary arm support is facilitated.
In the arc-shaped track ship loader, the capacity of the buffer storage tank is not lower than 400m 3. When the arm support of the ship loader rotates or the cargo ship shifts, in order to prevent the fly ash from leaking, the chute tube is required to stop discharging, and the buffer storage tank has larger capacity to continuously store the fly ash, so that the ash conveying stagnation of the power plant is avoided.
In the arc-shaped track ship loader, a pressure release valve is arranged above the bag-type dust remover on the buffer storage tank, and the buffer storage tank is also provided with a material level monitoring device and an inspection manhole. The pressure release valve can release air in the buffer storage tank, so that the influence of excessive pressure in the storage tank caused by massive entry of fly ash on the continuous ash feeding of the ash conveying pipe of the power plant is avoided. The material level monitoring device can provide the fly ash material level data in the buffer storage tank for control personnel, and is convenient for adjust the power plant ash conveying speed, the main arm screw conveyor and the auxiliary arm screw conveyor. The inspection manhole can be convenient for an inspection staff to inspect and maintain the buffer storage tank, and the service life of the ship loader is prolonged.
The arc-shaped track ship loader further comprises a main arm support frame, the main arm support frame is arranged below the main arm support frame, one end of the main arm support frame is rotationally connected with the rear supporting seat and can horizontally rotate around the rear supporting seat, the other end of the main arm support frame is fixedly connected with the front supporting seat, and the main arm support frame is fixedly connected with the main arm support frame through a connecting rod. The main arm support frame can provide necessary support for the main arm frame, so that the structural stability of the ship loader is improved.
Compared with the prior art, the invention has the following advantages: the arc-shaped track ship loader can transport the fly ash, comprehensively protect the ship loader, effectively prevent the fly ash from leaking and polluting the atmosphere, and is simple in structure and convenient to maintain. The invention adopts the arc track design fixed on the front edge of the wharf, can be directly connected with the ash conveying pipe of the power plant, can greatly reduce the transportation cost of the coal ash of the thermal power plant and improve the efficiency of the coal ash treatment of the thermal power plant. Meanwhile, the invention can also be used for shipping and transporting dust bulk materials such as cement, limestone powder, coal powder and the like, and has wide application range.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the structure of the main arm of the present invention;
FIG. 3 is a schematic view of the structure of the auxiliary arm in the present invention;
fig. 4 is a top view of the present invention.
Meaning of reference numerals: 1-rear supporting seat, 2-main arm support, 3-buffer storage tank, 4-front supporting seat, 5-travelling mechanism, 6-arc track, 7-portal column, 8-portal pull rod, 9-auxiliary arm support, 10-main arm impeller feeder, 11-auxiliary arm impeller feeder and 12-main arm screw conveyor, 13-auxiliary arm screw conveyor, 14-chute, 15-counterweight mechanism, 16-counterweight pull rod, 17-counterweight rod, 18-counterweight, 19-main arm rotary driving mechanism, 20-auxiliary arm rotary driving mechanism, 21-air lock, 22-bag dust collector, 23-pressure release valve and 24-main arm support frame.
The invention is further described below with reference to the drawings and the detailed description.
Detailed Description
Example 1 of the present invention: as shown in fig. 1 or 4, the arc-shaped track ship loader is fixedly arranged on the front edge of a wharf and used for loading and transporting fly ash of a thermal power plant, and comprises a rear supporting seat 1, a main arm frame 2, a buffer storage tank 3, a front supporting seat 4, a traveling mechanism 5, an arc-shaped track 6, a portal stand 7, a portal pull rod 8, an auxiliary arm frame 9, a main arm impeller feeder 10, an auxiliary arm impeller feeder 11, a main arm screw conveyor 12, an auxiliary arm screw conveyor 13 and a chute 14, wherein the rear supporting seat 1 is fixedly arranged on the front edge of the wharf, the arc-shaped track 6 is arranged between the rear supporting seat 1 and a ship berth by taking the axis of the rear supporting seat 1 as the center of a circle, the traveling mechanism 5 is arranged at the bottom of the front supporting seat 4 and slidably arranged on the arc-shaped track 6, and the front supporting seat 4 can slidably move along the arc-shaped track 6.
As shown in figure 1, the buffer storage tank 3 is positioned above the rear supporting seat 1, the inlet of the buffer storage tank 3 is connected with the ash conveying pipe of the power plant, and the fly ash generated by combustion of the power plant can be directly conveyed into the buffer storage tank 3 of the ship loader by the ash conveying pipe of the power plant, so that the transportation efficiency of the fly ash is improved, and the transportation cost of the fly ash is greatly reduced. The export of buffering storage tank 3 is connected through the one end of main arm impeller feeder 10 and main arm screw conveyer 12, the top of back supporting seat 1 is located to main arm impeller feeder 10, and main arm impeller feeder 10 can drive main arm screw conveyer 12 around back supporting seat 1 horizontal rotation, the other end of main arm screw conveyer 12 is connected with the one end of auxiliary arm screw conveyer 13 through auxiliary arm impeller feeder 11, the other end of auxiliary arm screw conveyer 13 extends to the cargo berth, is connected with swift current section of thick bamboo 14, has realized that the fly ash is carried by main arm screw conveyer 12 and auxiliary arm screw conveyer 13 by buffering storage tank 3 and has reached swift current section of thick bamboo 14, carries out the complete process of shipment by swift current section of thick bamboo 14 at last.
The main arm support 2 and the auxiliary arm support 9 are in truss or slab-girder structures, as shown in fig. 2, the main arm support 2 is arranged on the outer side of the main arm screw conveyor 12, and support and protection are provided for the main arm screw conveyor 12. As shown in fig. 3, the auxiliary boom 9 is disposed outside the auxiliary boom screw conveyor 13, and provides support and protection for the auxiliary boom screw conveyor 13.
As shown in fig. 1, the upright post 7 of the portal frame is an L-shaped steel frame, the short side of the L-shaped steel frame is horizontally arranged, and the long side of the L-shaped steel frame is vertically arranged and extends upwards. The top of preceding supporting seat 4 is located to the minor face of portal stand 7, can drive portal stand 7 around preceding supporting seat 4 horizontal rotation, on portal stand 7 was located to auxiliary arm impeller feeder 11, along with portal stand 7 together motion, and then realizes auxiliary arm screw conveyer 13 around preceding supporting seat 4 horizontal rotation. One end of the portal pull rod 8 is fixedly connected with the top end of the long side of the portal upright post 7, and the other end of the portal pull rod 8 is connected with one end of the auxiliary arm support 9, which is far away from the front supporting seat 4. The portal pull rod 8 is used for connecting the auxiliary boom 9 and the portal upright post 7, so that the stress structure of the auxiliary boom 9 is improved, and the stability of the ship loader is further improved.
Example 2: as shown in fig. 1, the arc-shaped track ship loader further comprises a counterweight mechanism 15 and a counterweight pull rod 16, the counterweight mechanism 15 comprises a counterweight rod 17 and a counterweight 18, one end of the counterweight rod 17 is connected with the long side of the portal upright 7, the other end of the counterweight rod 17 is connected with the counterweight 18, the counterweight 18 is far away from the auxiliary boom 9, one end of the counterweight pull rod 16 is fixedly connected with the top end of the long side of the portal upright 7, and the other end of the counterweight pull rod 16 is connected with one end of the counterweight rod 17 far away from the portal upright 7. The counterweight mechanism 15 and the counterweight pull rod 16 are used for balancing the tensile force born by the upright post 7 of the portal, so as to ensure the stress balance of the upright post of the portal.
Example 3: in the arc track ship loader, as shown in fig. 4, a vertical line between the rear support base 1 and the front of the wharf is a standard ship line, and when the main arm screw conveyor 12 and the auxiliary arm screw conveyor 13 of the ship loader are on the standard ship line, the structure of the ship loader is the most stable, which is also the position when the ship loader is stopped. The radius of the arc-shaped track 6 is 8m, the arc-shaped top point of the arc-shaped track 6 is positioned on a standard machine bit line, the rotation angle range of the main arm screw conveyor 12 is-45 DEG to +45 DEG of the standard machine bit line, the rotation angle range of the auxiliary arm screw conveyor 13 is-90 DEG to +90 DEG of the standard machine bit line, the chute 14 is ensured to cover the whole cargo ship, the frequency of the moving position of the cargo ship is reduced, and the working efficiency of the ship loader is improved. The moving speed of the travelling mechanism 5 along the arc-shaped track 6 is 0-8m/min, the moving speed of the travelling mechanism 5 can be controlled by operators, and the travelling mechanism can be adjusted according to actual working conditions and can be suitable for different working environments.
Example 4: in the arc track ship loader, the chute 14 is a telescopic chute and consists of a plurality of sections, and can vertically stretch along the vertical direction, and the chute 14 is positioned at the front end of the auxiliary arm screw conveyor 13, so that the effects of guiding bulk materials and inhibiting dust are achieved. The chute 14 is the last device when the shipment machine is unloaded, the fly ash is thrown downwards by chute 14 to the cargo ship, this in-process, the fly ash whereabouts, the unavoidable raise dust that can appear, chute 14 designs into flexible chute, can adjust the length of chute according to the draft condition of water level and cargo ship, the length of chute 14 is adjusted, chute 14 is the important device of shipment machine unloading, can directly load open gray ship or connect through supporting interface and professional sealed filling gray ship, when being used for open gray ship to load, keep the lower limb of chute 14 hug closely the fly ash of cargo ship bilge or having accomplished the shipment in the cargo ship as far as possible, reduce the gap, avoid the raise dust.
Example 5: as shown in fig. 2, the arc track ship loader further includes a rotation driving mechanism, specifically a main arm rotation driving mechanism 19 and an auxiliary arm rotation driving mechanism 20, where the main arm rotation driving mechanism 19 is disposed on the travelling mechanism 5 to provide power for the travelling mechanism 5 and the front support seat 4 to move along the arc track 6, and because the front support seat 4 is connected with one end of the main arm screw conveyor 12 far away from the rear support seat 1 through the portal column 7 and the auxiliary arm impeller feeder 11, the main arm rotation driving mechanism 19 is used to drive the main arm screw conveyor 12 to move along the arc track 6 with the rear support seat 1 as an axis. As shown in fig. 3, the auxiliary arm swing driving mechanism 20 is disposed at the connection between the short side of the upright post 7 and the front support seat 4, and is used for powering the horizontal rotation of the upright post 7 and the auxiliary arm screw conveyor 13 around the front support seat 4. The rotary driving mechanism consists of motor, ultimate torque coupler and speed reducer, and the final stage transmission may be gear and gear ring transmission. The ship loader is also provided with a standby rotary driving mechanism, when the main arm rotary driving mechanism 19 or the auxiliary arm rotary driving mechanism 20 breaks down, the standby rotary driving mechanism can drive the main arm screw conveyor 12 or the auxiliary arm screw conveyor 13 to return to the standard machine position line, so that structural damage of the ship loader caused by long-time deflection position is avoided.
Example 6: as shown in fig. 2 or fig. 3, the arc-shaped track ship loader further comprises a gas lock 21, and the gas lock 21 is arranged at the joint of the buffer storage tank 3 and the main arm impeller feeder 10 and the joint of the main arm screw conveyor 12 and the auxiliary arm impeller feeder 11. The air lock 21 is a protection mechanism in the dust transportation process, and is used for preventing the ash from being unsmooth in ash transportation caused by the air channeling phenomenon when the fly ash enters the main arm screw conveyor 12 from the buffer storage tank 3 or enters the auxiliary arm screw conveyor 13 from the main arm screw conveyor 12, so that the smooth circulation of fly ash particles can be maintained.
Example 7: as shown in fig. 1 or fig. 3, the arc-shaped track ship loader further comprises two cloth bag dust collectors 22, wherein one cloth bag dust collector 22 is arranged above the main arm support 2 and is connected with the chute 14 through a pipeline, and the other cloth bag dust collector 22 is arranged above the buffer storage tank 3. The bag house 22 is a dry filter device that captures fine, dry, non-fibrous dust. The ship loader has two structures in the process of conveying the fly ash, the fly ash can obviously fall down, and dust emission can be caused, wherein one part is that the fly ash in a power plant ash conveying pipe enters the buffer storage tank 3, and the other part is that the chute 14 pours the fly ash into a cargo ship, and two cloth bag dust collectors 22 are added for preventing the fly ash from leaking and polluting the atmosphere. In addition, since the chute 14 is positioned at the forefront end of the auxiliary arm screw conveyor 13, in order to reduce the load on the gantry tie rod 8, a bag collector 22 is provided on the main arm frame 2, and is connected to the chute 14 through a pipe.
Example 8: in the arc-shaped track ship loader, the capacity of the buffer storage tank 3 is not lower than 400m 3. When the arm support of the ship loader rotates or the cargo ship shifts, in order to prevent the fly ash from leaking, the ship loader needs to be stopped, the buffer storage tank has larger capacity, the fly ash can be continuously stored, the ash conveying of the power plant can be continuously carried out, and the phenomenon that the pneumatic ash conveying device of the power plant stops to influence the ash conveying efficiency is avoided.
Example 9: in the arc track ship loader, as shown in fig. 1, a pressure release valve 23 is arranged above a bag-type dust remover 22 on a buffer storage tank 3, and the pressure release valve 23 can discharge redundant air in the buffer storage tank, so that excessive pressure in the storage tank caused by massive entry of fly ash is prevented, and ash conveying is prevented. The buffer storage tank 3 is also provided with a material level monitoring device and an inspection manhole, and the material level monitoring device can provide fly ash storage data in the buffer storage tank 3 for control personnel, so that the ash conveying speed of a power plant and the rotation speeds of the main arm screw conveyor 12 and the auxiliary arm screw conveyor 13 are convenient to adjust. The inspection manhole is used for facilitating the overhauling and maintenance of the buffer storage tank 3 by an overhauling personnel.
Example 10: as shown in fig. 1 or fig. 2, the arc track ship loader further includes a main arm support 24, the main arm support 24 is disposed below the main arm support 2, one end of the main arm support 24 is rotatably connected with the rear support seat 1, and can horizontally rotate around the rear support seat 1, the other end of the main arm support 24 is fixedly connected with the front support seat 4, and the main arm support 24 is fixedly connected with the main arm support 2 through a connecting rod. The main arm support frame 24 can provide necessary support and protection for the main arm frame 2, and improves the structural stability of the ship loader.
The working principle of the invention is as follows: as shown in fig. 1, the arc-shaped track ship loader provided by the invention is suitable for loading fly ash, in the process of loading, a power plant ash conveying pipe conveys the fly ash into a buffer storage tank 3, the fly ash flows out from an outlet of the buffer storage tank 3, sequentially passes through a main arm impeller feeder 10, a main arm screw conveyor 12, a subsidiary arm impeller feeder 11 and a subsidiary arm screw conveyor 13, and finally is dumped into a cargo ship through a chute 14, so that the loading process is completed.
The invention adopts the screw conveyor to replace a conveyor belt in the traditional ship loader, thereby avoiding large-scale dust emission caused by external interference in the conveying process of the fly ash. The invention also effectively controls the fly ash in the falling process by using the telescopic chute and the bag-type dust remover 22, controls the fly ash in a controllable range, and avoids polluting the atmosphere.
The invention is also connected with the ash conveying pipe bracket of the power plant, can greatly reduce the transportation cost of the fly ash of the thermal power plant and improves the transportation efficiency. Because the ash conveying pipe of the power plant is fixedly arranged, the ship loader is also fixedly arranged at the front edge of the wharf, in order to enable the chute 14 to cover the cargo ship as much as possible and avoid frequent displacement of the cargo ship, the invention adopts an arc-shaped track design, the main arm frame 2 can rotate around the rear supporting seat 1, the auxiliary arm frame 9 can rotate around the front supporting seat 4, the whole cargo ship can be covered, and the ship loading efficiency is improved.