A coal cleaning device with an external dust collection box

Abstract

This utility model discloses a residual coal cleaning device with an external dust collection box, including a guide truss, a device body, a lifting mechanism, and a dust collection box. The top of the device body is suspended in the middle of the guide truss via the lifting mechanism. The dust collection box is connected to the guide truss and placed on one side of the device body, with a vacuum connection pipe facing the device body. A dust suction chamber is formed at the bottom of the device body, with a downward-facing suction port. The device body also has suction pipes corresponding to the number of vacuum connection pipes, each suction pipe including a suction end and a connecting end. The suction end extends into the suction chamber, and the connecting end extends from the top of the device body and bends towards the dust collection box. The lifting mechanism drives the device body to rise / fall and causes the connecting end to separate / connect with the vacuum connection pipe. The detachable external dust collection box of this application allows the cleaning action of the device body to be performed separately / synchronously with the negative pressure suction action. The unloading of the external dust collection box will not compete with the device body for time and can operate independently.

Description

Technical Field

[0001] This utility model relates to the field of residual coal cleaning technology, and in particular to a residual coal cleaning device with an external dust collection box. Background Technology

[0002] After coal unloading is completed, a large amount of residual coal often remains inside the train carriages. If it is not cleaned in time, it will easily lead to waste of resources. Moreover, the residual coal can easily generate dust pollution during the transfer of the carriages. Therefore, a special residual coal cleaning device is required for treatment.

[0003] Existing residual coal cleaning devices have several shortcomings: First, most adopt a built-in dust collection box design, requiring cleaning and coal unloading operations to be carried out sequentially. Once the dust collection box is full, the machine must be stopped for unloading, with both operations competing for time and significantly reducing overall efficiency. Second, the cleaning mechanism is mostly a single roller brush or side brush, which is insufficient to cover areas such as the edges and top of the carriage, easily creating cleaning dead zones and resulting in a high residual coal rate. Third, the devices lack adaptability and cannot be flexibly adjusted to accommodate train carriages of different heights and widths. Fourth, in some devices with dust removal functions, the filter elements are prone to clogging due to dust accumulation, requiring frequent manual cleaning and further affecting operational continuity. These problems make it difficult for existing devices to meet the requirements for efficient and thorough residual coal cleaning.

[0004] Therefore, this application aims to propose an external dust collection box, a comprehensive cleaning coverage, and a good adaptability and filtration effect for cleaning residual coal. Utility Model Content

[0005] To address the shortcomings of the existing technology, this utility model proposes an external dust collection box coal cleaning device to solve the aforementioned technical problems.

[0006] This application proposes a residual coal cleaning device with an external dust collection box, including a guide truss, a device body, a lifting mechanism, and a dust collection box. The top of the device body is suspended in the middle of the guide truss via the lifting mechanism. The dust collection box is connected to the guide truss and placed on one side of the device body. The dust collection box has a vacuum connection pipe facing the device body. A dust suction chamber is formed in the lower part of the device body, and the dust suction chamber has a downward dust suction port. The device body also has a dust suction pipe corresponding to the number of vacuum connection pipes. The dust suction pipe includes a dust suction end and a connecting end. The dust suction end enters the dust suction chamber, and the connecting end exits from the top of the device body and bends towards the dust collection box. The lifting mechanism drives the device body to rise / fall and causes the connecting end to separate / connect with the vacuum connection pipe. The detachable external dust collection box allows the cleaning action of the device body to be carried out separately / synchronously with the negative pressure dust suction action. The unloading of the external dust collection box will not compete with the device body for time. It can be operated independently, or it can be unloaded and connected to the device body for negative pressure dust suction.

[0007] By adopting the above technical solution, the guide truss carries the main body of the device to clean the residual coal in the train carriage. The residual coal in the carriage enters the dust suction chamber through the dust suction port, and then enters the dust collection box through the dust suction pipe. The lifting mechanism is responsible for controlling the rise and fall of the main body of the device. When a carriage is cleaned, the main body of the device rises and moves with the guide truss past the current carriage to the next carriage to be cleaned. At the same time, when the main body of the device finishes cleaning, its rising action will cause the connection end of the dust suction pipe to separate from the vacuum connection pipe. Specifically, a connecting cylinder is provided at the connection end to control the connection and separation of the two. When the main body of the device reaches the carriage to be cleaned, the lifting mechanism controls its descent, and the connecting cylinder controls the connection end to connect with the vacuum connection pipe, and the main body of the device begins to clean and suck up the material.

[0008] Preferably, it also includes a cleaning mechanism, which includes a side brush assembly, a roller brush assembly, and a top brush assembly respectively placed on the front, bottom, and top of the main body of the device.

[0009] By adopting the above technical solution, multiple cleaning components are set on the main body of the device. The side brush component is responsible for cleaning the residual coal on the edge of the carriage, the roller brush component is responsible for cleaning the residual coal in most areas of the bottom of the carriage, and when the side brush component cleans the residual coal on the edge, the roller brush component can perform secondary cleaning. The top brush component is responsible for cleaning the residual coal on the top edge of the carriage. The three cleaning components work together to achieve all-round cleaning of the train carriage.

[0010] More preferably, the side brush assembly includes a pair of telescopic cylinders and a pair of parallel transverse guide rails located on the front of the main body of the device. A pair of vertical side brush fixing seats are slidably arranged on the transverse guide rails. The output end of the telescopic cylinder is drivenly connected to the corresponding side brush fixing seat. The upper and lower ends of the side brush fixing seat are provided with horizontal mounting plates, and the side brush body is arranged between the mounting plates.

[0011] By adopting the above technical solution, the two main body of the side brush assembly can be displaced on the transverse guide rail. The displacement distance is controlled by the telescopic cylinder, thereby realizing the width adjustment of the side brush assembly, which can adapt to the width of the carriage of different vehicle models. In conjunction with the lifting mechanism, it can adapt to carriages of different heights and widths, improving the environmental adaptability of the cleaning device.

[0012] In a further preferred embodiment, the top surface of the mounting plate on the upper part of the side brush holder is provided with a side brush motor, the inside of the side brush body is provided with a vertical connecting shaft, and the bottom of the side brush body is provided with a disc brush. The upper and lower ends of the connecting shaft are coaxially connected to the output shaft of the side brush motor and the disc brush, respectively.

[0013] By adopting the above technical solution, the side brush motor directly drives the disc brush to rotate through the series shaft, thereby cleaning the internal edge gaps of the carriage. The reasonable longitudinal coaxial connection layout reduces the space occupied by the side brush assembly.

[0014] More preferably, the roller brush assembly includes at least two roller brushes placed below the suction chamber, with the two ends of the roller brushes rotatably connected to the left and right sides of the main body of the device, respectively. The rotation axes of the roller brushes are located on the same horizontal plane and are distributed in parallel front and back. At least two suction ports are provided and placed between two adjacent roller brushes.

[0015] By adopting the above technical solution, at least two horizontal roller brushes are set at the bottom of the main body of the device. The two ends of the roller brushes are rotatably connected to the left and right sides of the main body of the device. At the same time, the dust suction port is set between the adjacent roller brushes. While the roller brushes clean the residual coal, the dust suction port sucks the cleaned residual coal into the dust suction chamber, which greatly improves the cleaning efficiency.

[0016] More preferably, the top of the device body is provided with a horizontal connecting frame, and the bottom surface of the connecting frame is provided with a number of connecting columns for connecting the top of the device body; the front and rear sides of the connecting frame are connected to the lifting mechanism, and the top brush assembly includes a number of top brushes placed on the left and right edges of the bottom surface of the connecting frame, and the top brushes are symmetrically distributed in the front, back, left and right.

[0017] By adopting the above technical solution, the main body of the device is connected to the lifting mechanism through the connecting frame to achieve modular assembly. At the same time, top brushes are symmetrically distributed on the connecting frame to clean the residual coal on the top edge of the carriage from all directions.

[0018] Preferably, at least two suction pipes are provided, and the suction pipes are staggered in the suction chamber; the outer peripheral surfaces of the connecting ends of adjacent suction pipes are connected by a stabilizing plate, and the opening of the vacuum connecting pipe has an annular flare, in which a sealing ring is embedded.

[0019] By adopting the above technical solution and staggering the suction pipes, the vacuum suction force generated by the suction pipes is evenly distributed in the suction chamber, avoiding excessive or insufficient suction force at a single point, which would prevent some residual coal from being sucked into the dust collection box. Since the suction pipes are too long and prone to shaking, adjacent suction pipes are connected by a stabilizing plate to improve stability. The annular flare at the opening of the vacuum connection pipe ensures that the connection end of the suction pipe can be accurately aligned with it. At the same time, a sealing ring is added to improve the sealing degree of the two, thereby improving the vacuum suction effect.

[0020] Preferably, the dust collection box is provided with at least two negative pressure vacuum sources on the side away from the main body of the device, and the interior of the dust collection box is provided with a downwardly bent arc-shaped guide plate near the vacuum connection pipe. The dust collection box is also provided with a dust removal component, which is located on the side of the arc-shaped guide plate away from the vacuum connection pipe.

[0021] By adopting the above technical solution, at least two negative pressure vacuum sources provide sufficient negative pressure suction. When the residual coal is sucked into the dust collection box, it will be blocked by the arc-shaped guide plate and guided to move downward. Under the action of gravity, it will sink to the bottom of the dust collection box. Furthermore, a dust removal component is set on the other side of the arc-shaped guide plate for filtration and dust removal to avoid dust pollution.

[0022] In a further preferred embodiment, the dust collection box has a horizontal partition plate above the vacuum connection pipe, and a number of dust removal holes are evenly spaced on the partition plate. Filter elements are embedded in the dust removal holes. An air storage tank is provided above the partition plate. The air storage tank has a number of blow pipes, which are bent downwards and extend into the filter elements.

[0023] By adopting the above technical solution, the gas storage tank is separated from the residual coal at the bottom of the dust collection box by the partition plate, and the dust is filtered by the filter element. The blowpipe uses the gas in the gas storage tank to blow the filter element, realizing the function of automatic dust removal by pulse blowpipe, and avoiding the filter element from becoming blocked due to excessive use time.

[0024] Preferably, the top front and rear sides of the device body are connected to lifting mechanisms. The lifting mechanism includes a fixed frame and a sliding frame that is vertically slidably arranged inside the fixed frame. The fixed frame is fixed on the guide truss. The device body is connected to the inner side of the sliding frame. The bottom of the fixed frame is provided with a hydraulic lifting rod. The output end of the hydraulic lifting rod is vertically upward and connected to the top of the sliding frame.

[0025] By adopting the above technical solution, when the output end of the hydraulic lifting rod moves upward, the sliding frame is forced to slide upward, thereby causing the main body of the device to move upward with the sliding frame. Since the fixed frame is fixedly connected to the guide truss, the main body of the device can move up and down relative to the guide truss.

[0026] Compared with the prior art, the beneficial effects of this application are as follows: The cleaning device of this application features an externally detachable dust collection box, allowing the main body of the device to perform cleaning and negative pressure dust collection separately or simultaneously. Unloading the dust collection box does not require time to waste with cleaning, significantly improving operational efficiency. The main body of the device is equipped with side brushes, roller brushes, and top brushes. The side brushes are width-adjustable via telescopic cylinders and guide rails, and the lifting mechanism adapts to carriages of different heights and widths. These three components work together to achieve comprehensive cleaning of the train carriages, preventing residual coal. The staggered distribution of the suction pipes ensures uniform suction power in the suction chamber, while a stabilizing plate enhances stability. The annular flared opening and sealing ring of the vacuum connection pipe improve sealing and ensure effective dust collection. The arc-shaped guide plate in the dust collection box guides residual coal to settle by gravity. The filter element works in conjunction with pulse jet cleaning (air tank, jet pipe) to achieve dust filtration while preventing filter clogging. The lifting mechanism uses a hydraulic lifting rod to stably drive the main body of the device up and down, adapting to carriage operations and cross-carriage movement, thus improving overall cleaning adaptability, thoroughness, and efficiency. Attached Figure Description

[0027] The accompanying drawings are included to provide a further understanding of the embodiments and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments and, together with the description, serve to explain the principles of the present invention. Other embodiments and many anticipated advantages of the embodiments will be readily recognized as they become better understood through reference to the following detailed description. Other features, objects, and advantages of this application will become more apparent from reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a three-dimensional structural diagram of the cleaning device according to an embodiment of this application; Figure 2 This is an exploded view of the main structure of the device according to a specific embodiment of this application; Figure 3 This is an exploded view of the side brush structure according to a specific embodiment of this application; Figure 4 This is an exploded view of the dust collection box structure according to a specific embodiment of this application; Figure 5 This is a schematic diagram of the installation of the lifting mechanism according to a specific embodiment of this application.

[0028] The meaning of each number in the diagram: Guide truss 01, main body of device 02, lifting mechanism 03, dust collection box 04, vacuum connection pipe 05, dust suction chamber 06, dust suction port 07, dust suction pipe 08, dust suction end 09, connection end 10, roller brush 11, connecting frame 12, connecting column 13, top brush 14, transverse guide rail 15, side brush fixing seat 16, mounting plate 17, side brush body 18, side brush motor 19, series shaft 20, disc brush 21, negative pressure vacuum source 22, arc-shaped guide plate 23, partition plate 24, filter element 25, air storage tank 26, blow pipe 27, fixed frame 28, sliding frame 29, hydraulic lifting rod 30, fixed beam 31, fixing component 32, cable wheel 33, stabilizing plate 34, main control unit 35. Detailed Implementation

[0029] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] This application proposes a residual coal cleaning device with an external dust collection box 04. Figure 1 A three-dimensional structural schematic diagram of a cleaning device according to an embodiment of this application is shown. Figure 2 An exploded view of the main structure of the device according to a specific embodiment of this application is shown, such as... Figure 1-2 As shown, the device includes a guide truss 01, a device body 02, a lifting mechanism 03, and a dust collection box 04. The top of the device body 02 is suspended from the middle of the guide truss 01 by the lifting mechanism 03. The dust collection box 04 is connected to the guide truss 01 and placed on one side of the device body 02. The dust collection box 04 is provided with a vacuum connection tube 05 facing the device body 02. A dust suction chamber 06 is formed at the lower part of the device body 02. The dust suction chamber 06 has a downward-facing dust suction port 07. The device body 02 is also provided with a number of dust suction pipes 08 corresponding to the number of vacuum connection tubes 05. The dust suction pipe 08 includes a dust suction end 09 and a connecting end 10. The dust suction end 09 enters the dust suction chamber 06, and the connecting end 10 extends out from the top of the device body 02 and bends towards the dust collection box 04. The lifting mechanism 03 drives the device body 02 to rise / fall and drives the connecting end 10 to separate / connect with the vacuum connection tube 05.

[0032] The outer side of the train car has a track to guide the movement of the guide truss 01. When cleaning residual coal in the train car, the guide truss 01 carries the main body of the device 02 to the top of the corresponding car. The lifting mechanism 03 lowers the main body of the device 02 into the car. After the main body of the device 02 is in place, the connection end 10 of the suction pipe 08 successfully matches the position sensor (not shown in the figure) installed on the vacuum connection pipe 05 of the dust collection box 04. The connection end 10 has a telescopic structure and is driven by the connected hydraulic cylinder (not shown in the figure) to move towards and dock with the vacuum connection pipe 05. The residual coal in the car is sucked into the suction chamber 06 from the suction port 07, and then... The dust is sucked into the dust collection box 04 through the suction pipe 08. When the work cycle is completed, the connecting cylinder control connection end 10 is separated from the vacuum connection pipe 05. The lifting mechanism 03 drives the main body 02 of the device to rise. The guide truss 01 carries the main body 02 of the device to the next carriage or exits from the work area. The detachable external dust collection box 04 allows the cleaning action of the main body 02 of the device to be carried out separately or synchronously with the negative pressure suction action. The external dust collection box 04 will not compete with the main body 02 of the device when unloading. The additional cleaning mechanism on the main body 02 of the device can continue to clean the carriage, or it can dock with the main body 02 of the device after unloading and then carry out negative pressure suction.

[0033] Specifically, the main body 02 of the device is also equipped with a cleaning mechanism, which includes a side brush assembly, a roller brush assembly, and a top brush assembly respectively placed on the front, bottom, and top of the main body 02 of the device.

[0034] Multiple cleaning components are installed on the main body 02 of the device. The side brush component is responsible for cleaning the residual coal on the edge of the carriage, the roller brush component is responsible for cleaning the residual coal in most areas of the bottom of the carriage, and when the side brush component cleans the residual coal on the edge, the roller brush component can perform secondary cleaning. The top brush component is responsible for cleaning the residual coal on the top edge of the carriage. The three cleaning components work together to achieve all-round cleaning of the train carriage.

[0035] The roller brush assembly includes at least two roller brushes 11 located below the suction chamber 06. The two ends of the roller brushes 11 are rotatably connected to the inner walls of the left and right sides of the main body 02 of the device, respectively. The rotation axes of the roller brushes 11 are located on the same horizontal plane and are distributed in parallel front and back. At least two suction ports 07 are provided and placed between two adjacent roller brushes 11.

[0036] By setting at least two horizontal roller brushes 11 at the bottom of the main body 02 of the device, with the two ends of the roller brushes 11 rotatably connected to the left and right sides of the main body 02 of the device, and the dust suction port 07 set between adjacent roller brushes 11, as the main body 02 of the device moves forward with the guide truss 01, the roller brushes 11 clean up the remaining coal while the dust suction port 07 sucks the cleaned remaining coal into the dust suction chamber 06, which greatly improves the cleaning efficiency.

[0037] The device body 02 has a horizontal connecting frame 12 at the top, and the bottom surface of the connecting frame 12 has several connecting columns 13 for connecting the top of the device body 02. The front and rear sides of the connecting frame 12 are connected to the lifting mechanism 03. The top brush assembly includes several top brushes 14 placed on the left and right edges of the bottom surface of the connecting frame 12, and the top brushes 14 are symmetrically distributed in the front, back, left and right.

[0038] Specifically, the connecting frame 12 is a grid-shaped frame structure, which has higher overall connection stability. The main body 02 of the device is connected to the lifting mechanism 03 through the connecting frame 12 to achieve modular assembly. At the same time, top brushes 14 are symmetrically distributed on the front, back, left and right sides of the connecting frame 12 to clean the residual coal on the top edge of the carriage in all directions.

[0039] At least two suction pipes 08 are provided, and the suction pipes 08 are staggered in the suction chamber 06; the outer peripheral surfaces of the connecting ends 10 of adjacent suction pipes 08 are connected by a stabilizing plate 34, and the opening of the vacuum connecting pipe 05 has an annular flare, and a sealing ring is embedded in the annular flare.

[0040] Specifically, the top of the suction chamber 06 is provided with an opening corresponding to the suction end 09 of the suction tube 08. The suction end 09 is inserted into the suction chamber 06 from the opening. After the cover plates on the left and right surfaces of the main body 02 of the device in the figure are closed, the left and right openings of the suction chamber 06 are sealed.

[0041] By staggering the suction pipes 08, the vacuum suction force generated by the suction pipes 08 is evenly distributed within the suction chamber 06, avoiding excessive or insufficient suction force at a single point, which would prevent some residual coal from being sucked into the dust collection box 04. Since the suction pipes 08 are too long, they are prone to shaking. Therefore, adjacent suction pipes 08 are connected by a stabilizing plate 34 to improve stability. The annular flare at the opening of the vacuum connecting pipe 05 ensures that the connecting end 10 of the suction pipe 08 can be precisely connected to it. At the same time, a sealing ring is added to improve the sealing degree of the two, thereby improving the vacuum suction effect.

[0042] Furthermore, a main control unit 35 is provided inside the main body 02 above the dust suction chamber 06, which is used to control the side brush assembly, top brush assembly, roller brush assembly, etc.

[0043] Figure 3 An exploded view of the side brush assembly structure according to a specific embodiment of this application is shown, as follows: Figure 1-3 As shown, the side brush assembly includes a pair of telescopic cylinders (not shown in the figure) and a pair of parallel transverse guide rails 15 located on the front of the main body 02 of the device. A pair of vertical side brush fixing seats 16 are slidably arranged on the transverse guide rails 15. The output end of the telescopic cylinder is drivenly connected to the corresponding side brush fixing seat 16. Both the upper and lower ends of the side brush fixing seat 16 are provided with horizontal mounting plates 17, and the side brush body 18 is arranged between the mounting plates 17.

[0044] Specifically, the two side brush bodies 18 of the side brush assembly can be displaced on the transverse guide rail 15. The displacement distance is controlled by the telescopic cylinder, and it can automatically adapt within a width range of 2700-3200mm to realize the width adjustment of the side brush assembly, thereby adapting to the width of the carriage of different vehicle models. In conjunction with the lifting mechanism 03, it can adapt to carriages of different heights and widths, improving the environmental adaptability of the sweeping device.

[0045] The top surface of the mounting plate 17 on the upper part of the side brush holder 16 is provided with a side brush motor 19, the inside of the side brush body 18 is provided with a vertical series shaft 20, and the bottom of the side brush body 18 is provided with a disc brush 21. The upper and lower ends of the series shaft 20 are coaxially connected to the output shaft of the side brush motor 19 and the disc brush 21, respectively.

[0046] Specifically, the side brush motor 19 directly drives the disc brush 21 to rotate via the series shaft 20, thereby cleaning the gaps on the inner edge of the carriage. The reasonable longitudinal coaxial connection layout reduces the space occupied by the side brush assembly.

[0047] Figure 4 An exploded view of a dust collection box structure according to a specific embodiment of this application is shown, as follows: Figure 1-4As shown, the dust collection box 04 is provided with at least two negative pressure vacuum sources 22 on the side away from the main body 02 of the device. The negative pressure vacuum sources 22 include, but are not limited to, equipment such as blowers and vacuum pumps. Inside the dust collection box 04, near the vacuum connection pipe 05, there is a downward-bent arc-shaped guide plate 23. The dust collection box 04 is also provided with a dust removal component, which is located on the side of the arc-shaped guide plate 23 away from the vacuum connection pipe 05.

[0048] At least two negative pressure vacuum sources 22 provide sufficient negative pressure suction for the suction pipe 08. When the residual coal is sucked into the dust collection box 04, it will be blocked by the arc-shaped guide plate 23 and guided to move downward. Under the action of gravity, it will sink to the bottom of the dust collection box 04. Since the residual coal will generate dust when it is sucked in, a dust removal component is set on the other side of the arc-shaped guide plate 23 to filter and remove dust, so as to avoid dust pollution.

[0049] The dust collection box 04 has a horizontal partition plate 24 above the vacuum connection pipe 05. The partition plate 24 has several dust removal holes at equal intervals. Filter elements 25 are embedded in the dust removal holes. An air storage tank 26 is provided above the partition plate 24. The air storage tank 26 has several blow pipes 27. The blow pipes 27 are bent downward and extend into the filter elements 25. The filter elements 25 include, but are not limited to, filter cartridges and filter bags.

[0050] By setting up a partition plate 24 to separate the gas storage tank 26 from the residual coal at the bottom of the dust collection box 04, dust is filtered by the filter element 25, and the blow pipe 27 uses the gas in the gas storage tank 26 to blow the filter element 25, realizing the function of multi-stage filtration pulse blow automatic dust removal, and avoiding the filter element 25 from clogging due to excessive use time.

[0051] Figure 5 A schematic diagram of the installation of the lifting mechanism according to a specific embodiment of this application is shown, such as... Figure 1-5 As shown, lifting mechanisms 03 are connected to both the front and rear sides of the top of the main body 02 of the device. The lifting mechanism 03 includes a fixed frame 28 and a sliding frame 29 that is vertically slidably disposed inside the fixed frame 28. The fixed frame 28 is fixed on the guide truss 01. The main body 02 of the device is connected to the inner side of the sliding frame 29. A hydraulic lifting rod 30 is provided at the bottom of the fixed frame 28. The output end of the hydraulic lifting rod 30 passes vertically upward through the bottom of the sliding frame 29 and is connected to the top of the sliding frame 29.

[0052] Specifically, the fixed frame 28 is a rectangular frame, and the sliding frame 29 can be a U-shaped frame. In this case, the output end of the hydraulic lifting rod 30 does not need to pass through its bottom, but directly connects to the top of the sliding frame 29. Furthermore, the two sides of the sliding frame 29 are slidably mounted on the vertical groove inside the fixed frame 28 by pulleys. The front and rear parts of the connecting frame 12 are also equipped with pulleys, which are mounted on the left and right sides and slidably mounted on the groove inside the sliding frame 29.

[0053] Furthermore, a transverse fixed beam 31 is provided on the outer side of the upper part of the fixed frame 28. The fixed beam 31 does not interfere with the operation of the hydraulic lifting rod 30. Two fixing parts 32 are symmetrically provided on the fixed beam 31. At the same time, two fixing parts 32 are also provided at the corresponding positions of the connecting frame 12. Two cable pulleys 33 are provided at the top of the sliding frame 29. Two cables (not shown in the figure) are used to pass around the two cable pulleys 33 respectively. The two ends of the cables are connected to the corresponding upper and lower fixing parts 32 respectively. When the hydraulic lifting rod 30 pushes the sliding frame 29 upward, the cable pulleys 33 move upward with the sliding frame 29, and the middle section of the cable is pulled upward. Since the fixed frame 28 is fixed on the guide truss 01, only the connecting parts on the connecting frame 12 will be pulled upward, thereby pulling the main body of the device 02. This avoids excessive load on a single hydraulic lifting rod 30, making the lifting of the main body of the device 02 more effortless and improving the overall life of the lifting mechanism 03.

[0054] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described utility model concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A residual coal cleaning device with an external dust collection box, characterized in that, The device includes a guide truss, a main body, a lifting mechanism, and a dust collection box. The top of the main body is suspended from the middle of the guide truss via the lifting mechanism. The dust collection box is connected to the guide truss and placed on one side of the main body. The dust collection box has a vacuum connection tube facing the main body. A dust suction chamber is formed at the bottom of the main body, and the dust suction chamber has a downward-facing suction port. The main body also has a number of suction pipes corresponding to the number of vacuum connection tubes. Each suction pipe includes a suction end and a connecting end. The suction end extends into the suction chamber, and the connecting end extends from the top of the main body and bends towards the dust collection box. The lifting mechanism drives the main body to rise / fall and causes the connecting end to separate / connect with the vacuum connection tube.

2. The cleaning device according to claim 1, characterized in that, It also includes a cleaning mechanism, which includes a side brush assembly, a roller brush assembly, and a top brush assembly respectively placed on the front, bottom, and top of the main body of the device.

3. The cleaning device according to claim 2, characterized in that, The side brush assembly includes a pair of telescopic cylinders and a pair of parallel transverse guide rails located on the front of the main body of the device. A pair of vertical side brush fixing seats are slidably mounted on the transverse guide rails. The output end of the telescopic cylinder is drivenly connected to the corresponding side brush fixing seat. Both the upper and lower ends of the side brush fixing seat are provided with horizontal mounting plates, and the side brush body is arranged between the mounting plates.

4. The cleaning device according to claim 3, characterized in that, The top surface of the mounting plate on the upper part of the side brush fixing base is provided with a side brush motor. The inside of the side brush body is provided with a vertical serial shaft, and a disc brush is provided below the side brush body. The upper and lower ends of the serial shaft are coaxially connected to the output shaft of the side brush motor and the disc brush, respectively.

5. The cleaning device according to claim 2, characterized in that, The roller brush assembly includes at least two roller brushes positioned below the suction chamber. The two ends of the roller brushes are rotatably connected to the left and right sides of the main body of the device, respectively. The rotation axes of the roller brushes are located on the same horizontal plane and are distributed in parallel front and back. At least two suction ports are provided and positioned between two adjacent roller brushes.

6. The cleaning device according to claim 2, characterized in that, The device body has a horizontal connecting frame at the top, and the bottom surface of the connecting frame has several connecting columns for connecting the top of the device body; the front and rear sides of the connecting frame are connected to the lifting mechanism, and the top brush assembly includes several top brushes placed on the left and right edges of the bottom surface of the connecting frame, and the top brushes are symmetrically distributed in the front, back, left and right.

7. The cleaning device according to claim 1, characterized in that, At least two suction pipes are provided, and the suction pipes are staggered in the suction chamber; the outer peripheral surfaces of the connecting ends of adjacent suction pipes are connected by a stabilizing plate, and the opening of the vacuum connecting pipe has an annular flare, in which a sealing ring is embedded.

8. The cleaning device according to claim 1, characterized in that, The dust collection box is provided with at least two negative pressure vacuum sources on the side away from the main body of the device. Inside the dust collection box, near the vacuum connecting pipe, there is a downward-bent arc-shaped guide plate. The dust collection box is also provided with a dust removal component, which is located on the side of the arc-shaped guide plate away from the vacuum connecting pipe.

9. The cleaning device according to claim 8, characterized in that, The dust collection box has a horizontal partition plate above the vacuum connection pipe. The partition plate has several dust removal holes at equal intervals, and filter elements are embedded in the dust removal holes. Above the partition plate is a gas storage tank with several blow pipes. The blow pipes are bent downward and extend into the filter elements.

10. The cleaning device according to claim 1, characterized in that, The lifting mechanism is connected to both the front and rear sides of the top of the main body of the device. The lifting mechanism includes a fixed frame and a sliding frame that is vertically slidably arranged inside the fixed frame. The fixed frame is fixed to the guide truss. The main body of the device is connected to the inner side of the sliding frame. A hydraulic lifting rod is provided at the bottom of the fixed frame. The output end of the hydraulic lifting rod is vertically upward and connected to the top of the sliding frame.

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