A single-girder crane

Abstract

The present invention discloses a single-beam crane, comprising end beams, a trolley and a suction and unloading unit, wherein the end beams are arranged on both sides of a workshop, the trolley comprises a main beam, a trolley and a trolley platform are provided at both ends of the main beam, and the trolley comprises a trolley frame; the suction and unloading unit comprises a suction and unloading device arranged on the trolley frame and a dust removal device arranged on the trolley platform, the large material bin in the suction and unloading device is connected to the dust removal device through a movable joint assembly, the movable joint assembly comprises a fixed pipe and a movable pipe that is connected to the fixed pipe and moves on the fixed pipe, the fixed pipe is arranged on the main beam of the trolley, and is connected to the cyclone dust collector in the dust removal device through an opening, the movable pipe is connected to the large material bin on the trolley, and the trolley drives the movable pipe to move on the fixed pipe when it moves; in summary, the overall structure of the present invention is relatively simple; in addition, the use of one main beam reduces the load-bearing pressure of the factory building and reduces the cost of factory building construction.

Description

Technical Field

[0001] The present invention relates to the field of cranes, and in particular to a single-girder crane. Background Art

[0002] At present, overhead cranes or cranes used for suction and unloading generally adopt a multi-main-beam structure. The suction and unloading units of the suction and unloading crane are all placed on the trolley between the main beam structures of the crane, resulting in the suction and unloading units being generally closely distributed on the trolley. The structure of the crane is relatively complex. In addition, the crane with multiple main beams has a higher load-bearing capacity, and the load-bearing pressure of the factory building is large.

[0003] Therefore, it is necessary to develop a single-girder crane with a simpler structure and reduced load-bearing pressure on the factory building.

[0004] The invention patent with application number CN202110965488.1 discloses a graphite refining filler material suction and unloading overhead crane, which includes a main beam, a trolley frame, a discharge bin, a discharge pipe and a buffer bin. The discharge bin is connected to the discharge pipe, and a laying head is installed at the lower end of the discharge pipe. The upper and lower ends of the buffer bin are respectively provided with an exhaust fan and a suction pipe; a rotary support is provided between the discharge pipe and the laying head; two two-position four-way valves are respectively installed at both ends of the suction pipe, and the four-way valve body is provided with a main passage, a secondary passage and two side passages. The suction and unloading units of this overhead crane are all on the trolley of the overhead crane, and the overall structure of the overhead crane is relatively complex. In addition, more main beams are used, and the load-bearing capacity of the overhead crane is higher, resulting in high load-bearing pressure on the factory building. Summary of the Invention

[0005] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a single-beam crane with a relatively simple structure, which can reduce the load-bearing pressure of the factory building and realize suction and unloading of materials.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A single-girder crane comprises end beams and a trolley. The end beams are arranged on both sides of a workshop, and a trolley running mechanism is provided on the end beams. The trolley comprises a main beam, and a trolley platform and a trolley are provided on the main beam. The trolley comprises a trolley frame and a trolley running mechanism. The trolley running mechanism is provided on the trolley frame and drives the trolley to move on the trolley track provided on the main beam.

[0008] The crane is provided with a suction and unloading unit, which includes a suction and unloading device arranged on the trolley frame and a dust removal device arranged on the trolley platform. The suction and unloading device includes a large silo and a retractable suction pipe connected to one end of the large silo. The large silo is connected to the dust removal device through a movable joint assembly. The large silo includes a silo body and a retractable unloading pipe. The movable joint assembly includes a fixed pipe and a movable pipe connected to the fixed pipe and moving on the fixed pipe. The fixed pipe is arranged on the main beam of the trolley and is connected to the cyclone dust collector in the dust removal device through an opening. The movable pipe is connected to the large silo on the trolley. When the trolley moves, it drives the movable pipe to move on the fixed pipe.

[0009] Furthermore, the movable pipe of the movable joint assembly is the movable end of the movable joint assembly, and the fixed pipe is the fixed end of the movable joint assembly; a slide rail laid along the fixed pipe is provided at the opening of the fixed pipe, and the movable pipe is connected to the slide rail and moves along the opening under the action of the slide rail, and a belt is laid along the track on the upper part of the fixed pipe, and the belt covers the opening of the fixed pipe and the upper side of the movable pipe; a joint opening is provided on the side of the movable pipe, and the direction of the joint opening is at a certain angle to the track direction of the fixed pipe, preferably vertical, and the movable pipe is connected to the opening of the fixed pipe; a limiting groove is provided on the upper surface of the movable pipe to limit the movement direction of the belt, and a roller for pressing the belt is provided at the end of the movable pipe, and positioning columns are also provided on both sides of the movable pipe to prevent the belt from deviating.

[0010] Furthermore, the cross-section of the movable pipe is a trapezoid that is narrow at the top and wide at the bottom, and a plurality of rollers are provided above the movable pipe. It is preferred that the cross-section of the movable pipe along the side opening direction is a trapezoid, with a larger end connected to the fixed pipe and a smaller end away from the fixed pipe, so that the belt can move smoothly on the upper side of the movable pipe. In summary, the movable pipe in the movable joint assembly is connected to the large silo, and the fixed pipe is connected to the cyclone dust collector; when the trolley moves, it drives the large silo to move, and then moves together with the movable pipe connected to the large silo, and the dust enters through the joint opening on the side of the movable pipe and enters the fixed pipe through the movable pipe. After the movable pipe moves, the opening on the fixed pipe track is covered by the belt and tightly attached to the track. The belt is pressed on the fixed pipe opening through the roller, so that the space between the movable track and the fixed track is always in a closed space to prevent dust leakage.

[0011] Furthermore, the dust removal device includes a cyclone dust collector, a bag dust collector and a fan. One end of the cyclone dust collector is connected to the bag dust collector through a pipe provided with an air cooler, and the other end of the cyclone dust collector is directly connected to the bag dust collector through a pipe. One end of the bag dust collector is connected to the fan. During the material conveying process of the suction and unloading machine, the fan is started, and the material-containing airflow passes through the large silo and forms a dust-containing airflow after sedimentation. The material enters the large silo after sedimentation; the dust-containing airflow passes through the cyclone dust collector, air cooler and bag dust collector in turn through the movable joint assembly, is filtered by the bag dust collector, forms clean air, and is discharged by the fan.

[0012] Furthermore, the bag dust collector includes an upper air box and a cylinder fixedly connected in sequence from top to bottom, the upper air box is connected to the upper end surface of the cylinder, the cylinder is equipped with a filter bag, and the lower end of the cylinder is provided with an ash hopper; the upper air box is provided with an opening, and the opening is connected to the fan through a pipeline; the lower part of the ash hopper is connected to the ash discharge pipe, and the ash discharge pipe and the lower part of the ash hopper are also provided with a slide valve for controlling ash unloading.

[0013] Furthermore, the retractable suction pipe is a multi-layer rigid pipe sleeve structure, wherein the pipe parts are sequentially a fixed suction pipe and a movable suction pipe from the inside to the outside. The fixed suction pipe is in communication with a large silo, and a corresponding suction nozzle is connected to the bottom of the movable suction pipe. The movable suction pipe is multi-sectioned, wherein the outer diameter of the lower pipe of the fixed suction pipe is slightly smaller than the inner diameter of the innermost movable suction pipe, and the inner diameter of the outer movable suction pipe is slightly larger than the outer diameter of the inner movable suction pipe. A baffle is provided at the bottom of the fixed suction pipe, and a hanging plate is provided at the top of each layer of the movable suction pipe, and a corresponding baffle is provided at the bottom. When the retractable suction pipe is actually used, a motor-driven lifting device is used to pull the movable suction pipe up and down to achieve vertical contraction or extension of the retractable suction pipe along with the suction nozzle.

[0014] Furthermore, the silo body of the large silo is fixed to the trolley frame through a mounting seat, the retractable discharge pipe connected to the silo body is suspended below the trolley frame, and an ash discharge valve is provided between the silo body of the large silo and the retractable discharge pipe.

[0015] Furthermore, the movable joint assembly can be further configured as a telescopic sleeve structure, the telescopic sleeve structure includes a stationary pipe, a first-layer movable pipe, and a second-layer movable pipe. The stationary pipe is connected to the cyclone dust collector in the dust removal device, and the head end of the second-layer movable pipe is the movable end of the movable joint assembly, and the movable end is connected to the large silo in the suction and unloading device through a flange. A shaft sleeve is provided between the first-layer movable pipe and the stationary pipe, and a shaft sleeve is also provided between the second-layer movable pipe and the first-layer movable pipe. The pipe opening diameters of the three layers of pipes in the telescopic sleeve structure are, from high to low, the second-layer movable pipe, the first-layer movable pipe, and the stationary pipe.

[0016] Furthermore, the telescopic sleeve structure also includes a pulley and a slide rail provided on the main beam. A first layer of movable tubes and a second layer of movable tubes are fixedly connected above the pulley. The pulley slides on the slide rail provided on the main beam. When the large silo on the trolley frame drives the second layer of movable tubes connected to the large silo to move, the extension and shortening of the telescopic sleeve structure on the slide rail of the main beam is mainly achieved through the movement of the pulley.

[0017] Furthermore, the trolley running mechanism and the carriage running mechanism are both driven by motors.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The single-girder crane disclosed in the present invention utilizes only one main beam, with a trolley and a trolley platform provided at each end of the crane's main beam. The trolley frame is provided with a suction and unloading device in a suction and unloading unit, and the trolley platform is provided with a dust removal device in the suction and unloading unit. The suction and unloading device is connected to the dust removal device via a movable joint assembly provided on the main beam. The overall structure of the single-girder crane is simple, and in conjunction with the suction and unloading unit, the single-girder crane realizes the convenient material suction and unloading function. In addition, the use of only one main beam reduces the load-bearing pressure of the factory building and reduces the cost of factory building construction. In addition, the present invention installs the dust removal device in the suction and unloading unit on the trolley platform, reducing the weight of the trolley, improving the flexibility of the trolley, and facilitating the trolley's suction and unloading of materials.

[0020] The movable joint assembly structure provided in the present invention features fixed and movable pipes, each connected to a dust removal device and a suction and discharge device. When the trolley is in motion, a belt covers the opening of the fixed pipe and the upper side of the movable pipe, preventing dust leakage during the trolley's movement. Conventional hoses are used to connect the trolley and the trolley. However, the trolley's movement requires sufficient hose length, which can easily lead to entanglement. The movable joint assembly used in the present invention overcomes these problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a top view of a single-girder crane (the dust removal device is not shown in the figure);

[0023] Figure 2 This is a schematic diagram of the cross section of a single-girder crane trolley;

[0024] Figure 3 Schematic diagram of dust removal device;

[0025] Figure 4 is a schematic diagram of a mobile joint assembly;

[0026] Figure 5 A schematic diagram of a movable joint assembly for a telescopic sleeve structure;

[0027] Figure 6 Schematic diagram of the pipeline expansion in the telescopic sleeve structure.

[0028] Among them, the figure marks in the figure are: 1. end beam; 2. main beam; 3. trolley platform; 4. trolley frame; 5. trolley track; 6. retractable suction pipe; 7. large silo; 8. mounting seat; 9 movable joint assembly; 10. cyclone dust collector; 11. air cooler; 12. bag dust collector; 13. fan; 14. belt; 15. movable pipe; 16. roller; 17. positioning column; 18. second-layer movable pipe; 19. first-layer movable pipe; 20. fixed pipe; 21. pulley; 22. slide rail; 23. fixed pipe. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0030] Example 1

[0031] like Figures 1 to 4 As shown, a single-girder crane includes an end beam 1 and a trolley. The end beams 1 are arranged on both sides of a workshop. A trolley running mechanism is provided on the end beams 1. The trolley includes a main beam 2. A trolley platform 3 and a trolley are provided on the main beam 2. The trolley includes a trolley frame 4 and a trolley running mechanism. The trolley running mechanism is provided on the trolley frame 4 and drives the trolley to move on a trolley track 5 provided on the main beam 2.

[0032] The crane is provided with a suction and unloading unit, which includes a suction and unloading device provided on the trolley frame 4 and a dust removal device provided on the trolley platform 3. The suction and unloading device includes a large silo 7 and a retractable suction pipe 6 connected to one end of the large silo. The large silo 7 is connected to the dust removal device through a movable joint assembly 9. The large silo 7 includes a silo body and a retractable unloading pipe. The movable joint assembly 9 includes a fixed pipe 23 and a movable pipe 15 that is connected to the fixed pipe 23 and moves on the fixed pipe 23. The fixed pipe 23 is provided on the trolley main beam 3 and is connected to the cyclone dust collector 10 in the dust removal device through an opening. The movable pipe 15 is connected to the large silo 7 on the trolley. When the trolley moves, it drives the movable pipe 15 to move on the fixed pipe 23.

[0033] The telescopic suction pipe 6 is a multi-layer rigid pipe sleeve structure. The pipe parts are, from the inside to the outside, a fixed suction pipe and a movable suction pipe. The fixed suction pipe is connected to the large hopper 7, and a suction nozzle is connected to the bottom of the movable suction pipe. The movable suction pipe is multi-sectioned. The outer diameter of the lower pipe of the fixed suction pipe is slightly smaller than the inner diameter of the innermost movable suction pipe, and the inner diameter of the outer movable suction pipe is slightly larger than the outer diameter of the inner movable suction pipe. A baffle is provided at the bottom of the fixed suction pipe, and a hanging plate is provided at the top of each layer of the movable suction pipe, and a corresponding baffle is provided at the bottom. When the telescopic suction pipe is actually used, a motor-driven lifting device is used to pull the movable suction pipe up and down to achieve the telescopic suction pipe 6 to shrink or extend in the vertical direction along with the suction nozzle.

[0034] Furthermore, the silo body of the large silo 7 is fixed to the trolley frame 4 through the mounting seat 8, and the retractable unloading pipe connected to the silo body is suspended below the trolley frame 4. A dust unloading valve is provided between the silo body of the large silo 7 and the retractable unloading pipe for controlling the unloading operation of the large silo.

[0035] Furthermore, the dust removal device includes a cyclone dust collector 10, a bag dust collector 12 and a fan 13. One end of the cyclone dust collector 10 is connected to the bag dust collector 12 through a pipe provided with an air cooler 11, and the other end of the cyclone dust collector 10 is directly connected to the bag dust collector 12 through a pipe. One end of the bag dust collector 12 is connected to the fan 13. The bag dust collector 12 includes an upper air box and a cylinder fixedly connected from top to bottom. The upper air box is connected to the upper end surface of the cylinder, a filter bag is installed in the cylinder, and an ash hopper is provided at the lower end of the cylinder; the upper air box is provided with an opening, and the opening is connected to the fan through a pipe; the lower part of the ash hopper is connected to an ash discharge pipe, and a slide valve is also provided between the ash discharge pipe and the lower part of the ash hopper for controlling ash unloading. During the material conveying process of the suction and unloading device, the fan 13 is started, and the material-containing airflow passes through the large silo 7 and forms a dust-containing airflow after sedimentation. The material enters the large silo 7 after sedimentation; the dust-containing airflow passes through the cyclone dust collector 10, the air cooler 11 and the bag dust collector 12 in sequence, is filtered by the bag dust collector 12, forms clean air, and is discharged by the fan 13.

[0036] Example 2

[0037] like Figures 1 to 4 As shown, a single-girder crane includes an end beam 1 and a trolley. The end beams 1 are arranged on both sides of a workshop. A trolley running mechanism is provided on the end beams 1. The trolley includes a main beam 2. A trolley platform 3 and a trolley are provided on the main beam 2. The trolley includes a trolley frame 4 and a trolley running mechanism. The trolley running mechanism is provided on the trolley frame 4 and drives the trolley to move on a trolley track 5 provided on the main beam 2.

[0038] The crane is provided with a suction and unloading unit, which includes a suction and unloading device provided on the trolley frame 4 and a dust removal device provided on the trolley platform 3. The suction and unloading device includes a large silo 7 and a retractable suction pipe 6 connected to one end of the large silo. The large silo 7 is connected to the dust removal device through a movable joint assembly 9. The large silo 7 includes a silo body and a retractable unloading pipe. The movable joint assembly 9 includes a fixed pipe 23 and a movable pipe 15 that is connected to the fixed pipe 23 and moves on the fixed pipe 23. The fixed pipe 23 is provided on the trolley main beam 3 and is connected to the cyclone dust collector 10 in the dust removal device through an opening. The movable pipe 15 is connected to the large silo 7 on the trolley. When the trolley moves, it drives the movable pipe 15 to move on the fixed pipe 23.

[0039] like Figure 4 As shown, the movable pipe 15 of the movable joint assembly 9 is the movable end of the movable joint assembly, and the fixed pipe 23 is the fixed end of the movable joint assembly; a slide rail laid along the fixed pipe 23 is provided at the opening of the fixed pipe 23, and the movable pipe 15 is connected to the slide rail and moves along the opening under the action of the slide rail, and a belt 14 is laid along the track on the upper part of the fixed pipe 23, and the belt 14 covers the opening of the fixed pipe 23 and the upper side of the movable pipe; a joint opening is provided on the side of the movable pipe 15, and the direction of the joint opening is at a certain angle to the track direction of the fixed pipe 23, preferably perpendicular to the track direction of the fixed pipe 23. The movable pipe 15 is connected to the opening of the fixed pipe 23, so that the powder can enter the fixed pipe 23 from the movable pipe 15 without hindrance; the upper surface of the movable pipe 15 is provided with a limiting groove for limiting the movement direction of the belt 14, and the end of the movable pipe 15 is provided with a roller 16 for pressing the belt 14. The roller 16 is preferably close to the track of the opening to press the belt 14 on the track. When the movable pipe 15 moves along the track, the belt 14 will not separate from the fixed pipe 23, preventing dust leakage. Positioning columns 17 are also provided on both sides of the movable pipe 15 to prevent the belt from deviating.

[0040] Furthermore, the cross section of the movable duct 15 is a trapezoid that is narrow at the top and wide at the bottom, and a plurality of rollers are provided above the movable duct 15. It is preferable that the cross section of the movable duct 15 along the side opening direction is a trapezoid, with the end connected to the fixed duct 23 being larger and the end away from the fixed duct 23 being smaller, so that the belt 14 can move smoothly on the upper side of the movable duct. In summary, the movable duct 15 in the movable joint assembly 9 is connected to the large silo 7, and the fixed duct 23 is connected to the cyclone dust collector 10; when the trolley moves, it drives the large silo 7 to move, and then moves together with the movable duct 15 connected to the large silo 7, and dust enters through the joint opening on the side of the movable duct 15 and enters the fixed duct 23 through the movable duct 15. When the movable duct 15 moves, the opening on the track of the fixed duct 23 is covered by the belt and tightly attached to the track. The belt 14 is pressed on the opening of the fixed duct 23 through the roller 16, so that the space between the movable duct 15 and the track of the fixed duct 23 is always in a closed space to prevent dust leakage.

[0041] In combination with Example 1, when the single-girder crane absorbs materials, the motor drives the trolley to move along the factory track through the trolley running mechanism and runs to the approximate location of the material. Then the trolley running mechanism provided on the trolley frame 4 drives the trolley to move along the main beam 2 on the trolley track 5 provided on the main beam. The movement of the trolley drives the movement of the large silo 7 and the retractable suction pipe 6 on the trolley frame 4. At the same time, it drives the movable pipe 15 connected to the large silo 7 to move on the slide rail of the opening of the fixed pipe until the retractable suction pipe 6 on the trolley frame 4 reaches just above the material. At this time, the fan 1 is started. 3. The suction pipe 6 extends. Due to the negative pressure suction of the fan 13, the suction pipe 6 draws material into the large silo 7. The material-laden airflow passes through the large silo 7 and settles to form a dust-laden airflow. The material then settles into the large silo 7. The dust-laden airflow flows through the movable duct 15 into the fixed duct 23. After passing through the cyclone dust collector 10 connected to the fixed duct 23, it enters the dust removal device on the trolley platform 3. The dust-laden airflow then passes through the cyclone dust collector 10, flows through the air cooler 11 and the bag filter 12, and is finally filtered by the bag filter 12 to form clean air, which is discharged by the fan 13. When the crane is unloading, the motor drives the trolley to move via the trolley operating mechanism, and then the trolley frame 4 moves to the designated position. At this time, the dust discharge valve controls the material in the large silo 7 to be discharged through the retractable discharge pipe of the large silo 7.

[0042] To sum up, the single-beam crane disclosed in the present invention adopts only one main beam 2, and a trolley and a trolley platform 3 are respectively provided at both ends of the crane main beam 2. The trolley frame 3 of the trolley is provided with a suction and unloading device in the suction and unloading unit, and the trolley platform 3 is provided with a dust removal device in the suction and unloading unit. The suction and unloading device is connected to the dust removal device through a movable joint assembly 9 provided on the main beam 2. The overall structure of the single-beam crane is simple, and with the suction and unloading unit, the function of convenient suction and unloading of materials of the single-beam crane is realized; in addition, only one main beam 2 is used, which reduces the load-bearing pressure of the factory building and reduces the cost of factory building construction.

[0043] The movable joint assembly structure 9 provided in the present invention is equipped with a fixed duct 23 and a movable duct 15, which respectively connect to the dust removal device and the suction and discharge device. When the trolley is in motion, the belt 14 covers the opening of the fixed duct 23 and the upper side of the movable duct 15, preventing dust leakage when the trolley is in motion. Conventional trolleys and trolleys use hoses to connect pipes. The trolley drives the hoses, requiring sufficient redundant length to move the hoses, which can easily lead to entanglement. The movable joint assembly 9 used in the present invention overcomes these problems.

[0044] Example 3

[0045] like Figures 1 to 3 As shown, a single-girder crane includes an end beam 1 and a trolley. The end beams 1 are arranged on both sides of a workshop. A trolley running mechanism is provided on the end beams 1. The trolley includes a main beam 2. A trolley platform 3 and a trolley are provided on the main beam 2. The trolley includes a trolley frame 4 and a trolley running mechanism. The trolley running mechanism is provided on the trolley frame 4 and drives the trolley to move on a trolley track 5 provided on the main beam 2.

[0046] The crane is provided with a suction and unloading unit, which includes a suction and unloading device arranged on the trolley frame 4 and a dust removal device arranged on the trolley platform 3. The suction and unloading device includes a large silo 7 and a retractable suction pipe 6 connected to one end of the large silo. The large silo 7 is connected to the dust removal device through a movable joint assembly 9. The large silo 7 includes a silo body and a retractable unloading pipe.

[0047] like Figure 5 、 Figure 6As shown, the movable joint assembly 9 is a telescopic sleeve structure, which includes a fixed pipe 20, a first-layer movable pipe 19, and a second-layer movable pipe 18. The fixed pipe 20 is connected to the cyclone dust collector 10 in the dust removal device. The head end of the second-layer movable pipe 18 is the movable end of the movable joint assembly, and the movable end is connected to the large silo 7 in the suction and unloading device through a flange. A shaft sleeve is provided between the first-layer movable pipe 19 and the fixed pipe 20, and a shaft sleeve is also provided between the second-layer movable pipe 18 and the first-layer movable pipe 19. The diameter of the pipe opening of the three-layer pipe in the telescopic sleeve structure is determined by The top and bottom are respectively a second-layer moving tube 18, a first-layer moving tube 19, and a fixed tube 20. In addition, the telescopic sleeve structure also includes a pulley 21 and a slide rail 22 provided on the main beam 2. The pulley 21 is fixedly connected to the first-layer moving tube 19 and the second-layer moving tube 18. The pulley 21 slides on the slide rail 22 provided on the main beam 2. When the large silo 7 on the trolley frame 4 drives the second-layer moving tube 18 connected to the large silo 7 to move, the extension and shortening of the telescopic sleeve structure on the slide rail 22 of the main beam 2 is mainly achieved through the movement of the pulley 21. The telescopic sleeve structure is completely shortened as shown in FIG. Figure 5 As shown, the telescopic sleeve structure is fully extended as shown Figure 6 shown.

[0048] In combination with Example 1, when the single-girder crane absorbs materials, the motor drives the trolley to move along the factory track through the trolley running mechanism and runs to the approximate location of the material. Then the trolley running mechanism provided on the trolley frame 4 drives the trolley to move along the main beam 2 on the trolley track 5 provided on the main beam. The movement of the trolley drives the movement of the large silo 7 and the telescopic suction pipe 6 on the trolley frame 4. At the same time, it drives the second-layer moving pipe 18 connected to the large silo 7 to move on the slide rail 22 of the main beam 2 through the pulley 21, thereby realizing the extension and shortening of the telescopic sleeve structure, until the telescopic suction pipe 6 on the trolley frame 4 reaches directly above the material. At this time, the fan 13 is started, and the suction pipe 6 is extended. Due to the negative pressure suction effect of the fan 13, the suction pipe 6 draws the material into the large silo 7. The material-containing airflow passes through the large silo 7 and forms a dust-containing airflow after sedimentation. The material enters the large silo 7 after sedimentation; the dust-containing airflow flows through the two-layer movable pipe 18 and enters the telescopic sleeve structure. The dust-containing airflow passes through the cyclone dust collector 10 connected to the fixed pipe 20 and enters the dust removal device on the trolley platform 3. The dust-containing airflow then passes through the cyclone dust collector 10 and flows through the air cooler 11 and the bag dust collector 12. Finally, it is filtered by the bag dust collector 12 to form clean air and discharged by the fan 13. When the crane is unloading, the motor drives the trolley to move through the trolley operating mechanism, and then the trolley frame 4 moves to the designated position. At this time, the material in the large silo 7 is controlled by the dust discharge valve to be unloaded through the telescopic discharge pipe of the large silo 7.

[0049] In summary, the single-beam crane disclosed in the present invention uses only one main beam 2. A trolley and a trolley platform 3 are provided at both ends of the crane main beam 2. The trolley frame 3 of the trolley is provided with a suction and unloading device in the suction and unloading unit, and the trolley platform 3 is provided with a dust removal device in the suction and unloading unit. The suction and unloading device is connected to the dust removal device through a movable joint assembly 9 provided on the main beam 2. The overall structure of the single-beam crane is simple, and in conjunction with the suction and unloading unit, the single-beam crane realizes the convenient suction and unloading function of the material. In addition, only one main beam 2 is used, which reduces the load-bearing pressure of the factory building and reduces the cost of factory building construction. In addition, the present invention sets the dust removal device in the suction and unloading unit on the trolley platform 3, which reduces the weight of the trolley, improves the flexibility of the trolley, and facilitates the trolley to suck and unload materials.

[0050] In addition, when traditional large carts and small carts need to connect pipelines, they are all connected by hoses. When the small cart drives the hose to move, sufficient redundant length of the hose needs to be reserved, which is prone to risks such as entanglement. The movable joint assembly 9 used in the present invention is a hard tube structure, which overcomes the problems caused by the hose.

[0051] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of the present invention.

Claims

1. A single-girder crane, characterized in that: It includes end beams and a trolley. The end beams are arranged on both sides of the workshop. A trolley running mechanism is provided on the end beams. The trolley includes a main beam. A trolley platform and a trolley are provided on the main beam. The trolley includes a trolley frame and a trolley running mechanism. The trolley running mechanism is provided on the trolley frame and drives the trolley to move on the trolley track provided on the main beam. The crane is provided with a suction and unloading unit, which includes a suction and unloading device provided on the trolley frame and a dust removal device provided on the trolley platform, the suction and unloading device includes a large silo and a retractable suction pipe connected to one end of the large silo, the large silo is connected to the dust removal device through a movable joint assembly, the large silo includes a silo body and a retractable unloading pipe, the movable joint assembly includes a fixed pipe and a movable pipe connected to the fixed pipe and moving on the fixed pipe, the fixed pipe is provided on the main beam of the trolley, and is connected to the cyclone dust collector in the dust removal device through an opening, the movable pipe is connected to the large silo on the trolley, and the movable pipe is driven to move on the fixed pipe when the trolley moves; The movable joint assembly can be set as a telescopic sleeve structure, and the telescopic sleeve structure includes a fixed tube, a first layer of movable tube, and a second layer of movable tube, the fixed tube is connected to the cyclone dust collector in the dust removal device, the head end of the second layer of movable tube or the movable pipe of the movable joint assembly is the movable end of the movable joint assembly, and the movable end is connected to the large silo in the suction and unloading device through a flange, and the fixed pipe is the fixed end of the movable joint assembly; the opening of the fixed pipe is provided with a slide rail laid along the fixed pipe, and a belt is laid along the slide rail on the upper part of the fixed pipe, and the belt covers the opening of the fixed pipe and the upper side of the movable pipe; the side of the movable pipe is provided with a joint opening, and the direction of the joint opening is at a certain angle to the track direction of the fixed pipe, and the movable pipe is connected to the opening of the fixed pipe; the upper surface of the movable pipe is provided with a limit groove for limiting the movement direction of the belt, the end of the movable pipe is provided with a roller for pressing the belt, and positioning columns are also provided on both sides of the movable pipe.

2. The single-girder crane according to claim 1, characterized in that: The cross section of the movable pipe is a trapezoid that is narrow at the top and wide at the bottom, and a plurality of rollers are provided above the movable pipe.

3. The single-girder crane according to claim 1, characterized in that: The dust removal device includes a cyclone dust collector, a bag dust collector and a fan. One end of the cyclone dust collector is connected to the bag dust collector through a pipeline equipped with an air cooler, and the other end of the cyclone dust collector is directly connected to the bag dust collector through a pipeline. One end of the bag dust collector is connected to the fan.

4. The single-girder crane according to claim 3, characterized in that: The bag dust collector comprises an upper air box and a cylinder which are fixedly connected in sequence from top to bottom, and the upper air box is communicated with the upper end surface of the cylinder.

5. The single-girder crane according to claim 1, characterized in that: The retractable suction pipe is a multi-layer hard pipe sleeve structure. The pipe parts of the retractable suction pipe are a fixed suction pipe and a movable suction pipe from the inside to the outside. The fixed suction pipe is connected to the large silo, and a suction nozzle is correspondingly connected to the bottom of the movable suction pipe.

6. The single-girder crane according to claim 1, characterized in that: The silo body of the large silo is fixed on the trolley frame through a mounting seat, and a telescopic discharge pipe connected to the silo body is suspended below the trolley frame.

7. The single-girder crane according to claim 6, characterized in that: The telescopic sleeve structure also includes a pulley and a slide rail provided on the main beam. The first layer of moving tubes and the second layer of moving tubes are fixedly connected above the pulley, and the pulley slides on the slide rail provided on the main beam.

8. The single-girder crane according to claim 1, characterized in that: The trolley running mechanism and the carriage running mechanism are both driven by motors.

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