Square steel pipe polishing and derusting equipment

Abstract

The invention belongs to the technical field of rust removal devices, and provides square steel pipe polishing and rust removal equipment which is characterized in that a feeding device, a polishing device and a dust suction device are all arranged on a rack, and the dust suction device is arranged close to the polishing device so as to adsorb dust generated when the polishing device works; the grinding device comprises two sets of bidirectional grinding mechanisms used for grinding the two opposite faces of the square steel pipe, the two sets of bidirectional grinding mechanisms are arranged in a spaced mode, and the grinding directions are perpendicular to each other so as to collaboratively conduct grinding operation on the four surfaces of the square steel pipe. Therefore, four-side polishing and rust removal can be completed at a time, manual turning over and secondary clamping are not needed, the operation efficiency is effectively improved, and meanwhile, positioning errors caused by secondary clamping are avoided. Dust is prevented from being attached to the surface of the steel pipe and a polishing part to affect the rust removal precision, dust diffusion is avoided, and the safety of the working environment is guaranteed. Synchronous improvement of the square steel pipe rust removal precision, the operation efficiency and the operation safety is achieved.

Description

Technical Field

[0001] This invention relates to the field of rust removal equipment technology, specifically to a square steel pipe grinding and rust removal device. Background Technology

[0002] Square steel is a commonly used structural material in the construction and machinery industries, widely used in building structures, bridges, mechanical equipment, supports, and other applications. Its good strength, toughness, and weldability meet the needs of various structural applications. However, due to environmental factors, storage conditions, and service life, the surface of square steel is highly susceptible to corrosion. Corrosion of steel can cause the cross-section of components to shrink and can also deteriorate key mechanical properties such as yield strength and ultimate strength, significantly reducing the reliability and service life of steel structures.

[0003] Rust removal effectively removes the oxide layer and rust products from the surface of square steel, slowing down the corrosion process. It is an essential step in the processing and maintenance of square steel. Currently, the mainstream rust removal methods include mechanical rust removal, manual rust removal, and chemical rust removal. Among them, manual rust removal is labor-intensive and inefficient, and the large amount of dust generated during grinding can harm the health of operators. Chemical rust removal is prone to causing chemical pollution and may also corrode the workpiece itself, making it unsuitable for the requirements of precision machining. Traditional mechanical rust removal often uses a single-sided or bi-directional grinding structure. When removing rust from all four sides of square steel, manual flipping and secondary clamping are required, which not only increases labor costs and extends the process cycle, but also easily affects the rust removal effect due to clamping deviations. Moreover, most of them are not equipped with efficient dust treatment structures, resulting in significant dust diffusion problems.

[0004] In summary, existing rust removal methods are insufficient to simultaneously reduce labor costs, improve work efficiency, and ensure work safety while ensuring the rust removal effect on square steel. They are unable to meet the actual production requirements for efficient, precise, and environmentally friendly rust removal of square steel. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a square steel pipe grinding and rust removal device.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A square steel pipe grinding and rust removal device is provided, including a frame, a feeding device, a grinding device and a dust collection device; The feeding device, the grinding device and the dust collection device are all mounted on the frame, and the dust collection device is positioned close to the grinding device to absorb the dust generated by the grinding device during operation. The grinding device includes two sets of bidirectional grinding mechanisms for grinding two opposite surfaces of a square steel pipe. The two sets of bidirectional grinding mechanisms are spaced apart from each other and the grinding directions are perpendicular to each other, so as to work together to grind the four surfaces of the square steel pipe.

[0007] In some embodiments, the bidirectional grinding mechanism includes a grinding driver and two grinding execution components. The grinding driver is mounted on the frame, and its output end is connected to one of the grinding execution components to drive the grinding execution component to rotate. The two grinding execution components in the bidirectional grinding mechanism are linked by gear transmission to synchronously grind the two opposite surfaces of the square steel pipe.

[0008] In some embodiments, in the same group of bidirectional grinding mechanisms, the spacing between the grinding execution components arranged opposite to each other is adjusted by a screw drive mechanism to adapt to square steel pipes of different specifications.

[0009] In some embodiments, the helical transmission mechanism includes a helical adjusting rod and a sliding member. The mounting components on the frame restrict the axial and radial displacement of the helical adjusting rod, and the helical adjusting rod is rotatably mounted on the frame. In the same group of bidirectional grinding mechanisms, the sliding member is connected to a grinding execution component. The sliding member has a screw hole adapted to the helical adjusting rod, so that the sliding member can be driven to slide along the arrangement direction of the helical adjusting rod through the engagement of the screw hole and the helical adjusting rod, and the grinding execution component can be driven to move closer to or away from its opposite grinding execution component.

[0010] In some embodiments, the grinding execution component of the bidirectional grinding mechanism is any one of a wire brush grinding wheel, a belt grinding assembly, or a flap grinding roller.

[0011] In some embodiments, a collection chamber is provided on the frame and connected to the frame to collect dust generated during grinding.

[0012] In some embodiments, the vacuuming device includes a roller blade structure, the blades of which are driven to rotate by a vacuuming driver to perform vacuuming operations.

[0013] In some embodiments, the feeding device is configured as a roller-type feeding platform, which includes a plurality of conveying rollers and a conveying driver. The plurality of conveying rollers are rotatably mounted on the frame, and adjacent conveying rollers are linked by gear transmission. The conveying driver is mounted on the frame, and the output end of the conveying driver is connected to one of the conveying rollers to drive the plurality of conveying rollers to rotate synchronously and convey the square steel pipe to move.

[0014] In some embodiments, the system further includes an elastic telescopic positioning mechanism, which includes an outer cover, a plurality of elastic elements, and an inner cover. The outer cover is fixed on the frame, and the inner cover is movably disposed relative to the outer cover. The elastic elements are abutted between the inner cover and the outer cover, so that the inner cover elastically abuts against the upper side, left side, and right side of the square steel tube.

[0015] In some embodiments, the inner cover includes an independent upper pressure plate, a left clamping plate, and a right clamping plate; on the working surfaces of the upper pressure plate, the left clamping plate, and the right clamping plate facing the square steel tube, multiple sets of independently rotating precision needle rollers are arranged at equal intervals along the conveying direction of the square steel tube, and the needle rollers are partially protruding from the working surfaces so that the needle rollers make rolling contact with the square steel tube.

[0016] Compared with existing technologies, the advantages of this invention are as follows: The frame provides an overall load-bearing and installation foundation for the equipment, integrating the feeding device, grinding device, and dust collection device to ensure the structural stability of the coordinated operation of each component. The feeding device drives the square steel pipe to be continuously and uniformly conveyed, allowing the steel pipe to pass smoothly through the grinding area, forming a precise conveying and grinding linkage with the grinding device. The two sets of bidirectional grinding mechanisms of the grinding device are spaced apart from each other, and the grinding directions are perpendicular to each other. One set of mechanisms grinds two opposite sides of the steel pipe simultaneously, while the other set grinds the other two opposite sides simultaneously. With the conveying of the steel pipe, four-sided grinding and rust removal can be completed in one go, eliminating the need for manual flipping and secondary clamping, effectively improving work efficiency, and avoiding positioning errors caused by secondary clamping. The dust collection device is set up adjacent to the grinding device, instantly adsorbing the dust generated during the grinding operation. This prevents dust from adhering to the surface of the steel pipe and the grinding components, affecting the rust removal accuracy, and also prevents dust diffusion, ensuring a safe working environment. The various devices work in perfect coordination, with continuous conveying, vertical bidirectional synchronous grinding, and instant dust extraction as the core operating principles, to simultaneously improve the rust removal accuracy, work efficiency, and operational safety of square steel pipes. Attached Figure Description

[0017] Figure 1 This is a side view of the square steel pipe grinding and rust removal equipment of the present invention; Figure 2 This is a top view of the square steel pipe grinding and rust removal equipment of the present invention. Figure 3 This is a partial side view of the square steel pipe grinding and rust removal equipment of the present invention; Figure 4 This is a front view of the elastic telescopic positioning mechanism of the present invention.

[0018] 10. Equipment for grinding and removing rust from square steel pipes; 100. Frame; 110. Mounting ring; 120. First positioning ring; 130. Second positioning ring; 140. Support ring; 150. Collar; 200. Feeding device; 210. Conveyor roller; 220. Conveyor driver; 300. Grinding device; 310. Bidirectional grinding mechanism; 311. Grinding driver; 312. Grinding actuator; 320. Screw drive mechanism; 321. Screw adjusting rod; 400. Vacuuming device; 410. Drum blade structure; 420. Vacuuming actuator; 500. Collection bin; 600. Elastic telescopic positioning mechanism; 610. Outer cover; 620. Elastic element; 630. Inner cover; 631. Upper pressure plate; 632. Left clamping plate; 633. Right clamping plate; 634. Needle roller. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are some, but not all, of the embodiments of the present invention.

[0020] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0021] like Figures 1 to 3 As shown, this application provides a square steel pipe grinding and rust removal equipment 10, including a frame 100, a feeding device 200, a grinding device 300, and a dust collection device 400; the feeding device 200, the grinding device 300, and the dust collection device 400 are all mounted on the frame 100, and the dust collection device 400 is positioned close to the grinding device 300 to absorb the dust generated during the operation of the grinding device 300; the grinding device 300 includes two sets of bidirectional grinding mechanisms 310 for grinding two opposite surfaces of the square steel pipe, the two sets of bidirectional grinding mechanisms 310 are spaced apart from each other, and the grinding directions are perpendicular to each other, so as to cooperate in grinding the four surfaces of the square steel pipe.

[0022] Specifically, the frame 100, as the basic load-bearing component of the entire equipment, provides stable mounting support for the feeding device 200, grinding device 300, and dust collection device 400, ensuring the structural stability of each component during operation. The feeding device 200 is arranged along the conveying direction of the square steel pipe, realizing continuous feeding of the square steel pipe and providing a stable workpiece conveying foundation for the grinding process. The dust collection device 400 is arranged adjacent to the working area of ​​the grinding device 300 to shorten the distance of dust diffusion and can adsorb and treat dust at the first moment of its generation, preventing dust from drifting into the surrounding environment. The grinding device 300 has two sets of bidirectional grinding mechanisms 310 arranged in a front-to-back interval. One set of bidirectional grinding mechanisms 310 is responsible for grinding one set of opposite surfaces of the square steel pipe, while the other set of bidirectional grinding mechanisms 310, whose grinding direction is perpendicular to the first set, can grind the other set of opposite surfaces of the square steel pipe. The two sets of bidirectional grinding mechanisms 310 work in a coordinated manner by operating in sequence, so that the workpiece does not need to be flipped or clamped twice. The four outer surfaces of the square steel pipe can be completely rusted and ground in one go, which effectively improves the efficiency of rust removal of square steel pipe, while reducing manual intervention and lowering operating costs.

[0023] To address the technical problems of uneven grinding precision and inconsistent rust removal effects on the surface of square steel pipes caused by disordered power transmission in the bidirectional grinding mechanism 310 and asynchronous operation of the two grinding actuators 312, such as... Figures 1 to 3 As shown, in some embodiments, the bidirectional grinding mechanism 310 includes a grinding driver 311 and two grinding execution components 312. The grinding driver 311 is mounted on the frame 100. The output end of the grinding driver 311 is connected to a grinding execution component 312 to drive the grinding execution component 312 to rotate. The two grinding execution components 312 in the bidirectional grinding mechanism 310 are linked by gear transmission to synchronously grind the two opposite surfaces of the square steel tube.

[0024] Specifically, the grinding driver 311, serving as the power source for the bidirectional grinding mechanism 310, is configured as a motor. Its output end is directly connected to one of the grinding execution components 312, transmitting rotational power to the grinding execution component 312 to ensure continuous rotation and contact with the surface of the square steel pipe, thus achieving rust removal and grinding operations. Furthermore, in each bidirectional grinding mechanism 310, the two grinding execution components 312 are meshed together via gear sets to form a gear transmission. Driven by the grinding driver 311, without the need for additional power components, the other grinding execution component 312 can be driven to rotate synchronously and in opposite directions, ensuring that the speed and direction of rotation of the two grinding execution components 312 remain consistent. This allows for the application of uniform grinding force to the two opposite surfaces of the square steel pipe, avoiding over-grinding or incomplete grinding on one side, improving the uniformity and precision of rust removal on the surface of the square steel pipe, while simplifying the power structure and reducing the manufacturing cost and failure rate of the equipment.

[0025] To facilitate the use of the grinding execution component 312, in some embodiments, the grinding execution component 312 of the bidirectional grinding mechanism 310 is any one of a wire brush grinding wheel, a belt grinding assembly, or a flap grinding roller.

[0026] Specifically, the specific type of grinding execution component 312 can be flexibly selected according to the actual rust condition of the square steel pipe: the wire brush grinding wheel has a higher grinding intensity and is suitable for square steel pipes with thick surface rust and hard oxide layer, which can quickly peel off stubborn rust; the sanding belt grinding component has a smoother grinding surface and is suitable for square steel pipes with lighter surface rust and higher requirements for surface smoothness, which can reduce surface scratches while removing rust; the bladed grinding roller has a uniform grinding contact surface and combines grinding intensity and fineness, which is suitable for general rust removal operations of square steel pipes with normal rust levels.

[0027] like Figures 1 to 3 As shown, in this application, the grinding execution component 312 is configured as a blade-type grinding roller, and a protruding frame is connected to the frame 100 to install two sets of bidirectional grinding mechanisms 310 through the cooperation of the frame. The specific installation method of each bidirectional grinding mechanism 310 is as follows: refer to Figure 2 and Figure 3 The frame 100 has two opposite mounting rings 110 on each side; each grinding execution component 312 has a hollow structure, and a connecting rod is fixedly sleeved inside it. The two ends of the connecting rod protrude from the grinding execution component 312 and are rotatably connected to the inner surface of the two mounting rings 110 on one side through bearings, so that each grinding execution component 312 can be rotatably mounted on one side of the frame 100.

[0028] The output end of the grinding driver 311 is connected to a first multi-ribbed pulley, and the connecting rod drive end of one of the grinding execution components 312 is provided with a second multi-ribbed pulley. The first multi-ribbed pulley and the second multi-ribbed pulley are connected by a multi-ribbed belt drive. The grinding driver 311 can drive the grinding execution component 312 to rotate synchronously through this structure.

[0029] refer to Figure 2The output end of the connecting rod of the grinding execution component 312 is provided with a main bevel gear; a first positioning ring 120 and a second positioning ring 130 are provided on the same side of the frame 100. A connecting shaft is connected to the first positioning ring 120 through a bearing, and the other end of the connecting shaft is installed in the second positioning ring 130 through a bearing. A first driven bevel gear and a second driven bevel gear are connected to both sides of the first positioning ring 120. The first driven bevel gear is fixedly connected to the connecting shaft and meshes with the main bevel gear to drive the connecting shaft to rotate synchronously; the second driven bevel gear is linked to the connecting shaft, and when the connecting shaft rotates, it drives the second driven bevel gear to rotate synchronously; a driven bevel gear is fixedly provided on the drive end of the connecting rod of another grinding execution component 312. The driven bevel gear meshes with the second driven bevel gear. When the second driven bevel gear rotates, it drives the driven bevel gear to rotate synchronously, and the driven bevel gear drives the other grinding execution component 312 to rotate synchronously.

[0030] Thus, through the above structure, the grinding driver 311 can synchronously drive the two grinding execution components 312 to rotate.

[0031] Understandably, reference Figure 1 The square steel pipe is conveyed from back to front. The bidirectional grinding mechanism 310 is arranged at intervals at the front and back. The bidirectional grinding mechanism 310 closer to the feeding device 200 (rear side) is used to grind the left and right sides of the square steel pipe, while the bidirectional grinding mechanism 310 farther away from the feeding device 200 (front side) is used to grind the top and bottom sides of the square steel pipe. The square steel pipe can be ground on all four sides without flipping it over.

[0032] To address the technical problem that the fixed spacing of the grinding execution components 312 in the bidirectional grinding mechanism 310 prevents it from being adapted to square steel pipes of different cross-sectional specifications for rust removal, thus limiting the equipment's applicability, such as... Figures 1 to 3 As shown, in some embodiments, in the same set of bidirectional grinding mechanisms 310, the spacing between the grinding execution components 312 arranged opposite to each other is adjusted by a screw transmission mechanism 320 to adapt to square steel pipes of different specifications.

[0033] Specifically, the screw drive mechanism 320, as the core actuator for spacing adjustment, is connected in conjunction with two opposing grinding actuators 312 in the same set of bidirectional grinding mechanisms 310. By controlling the movement of the screw drive mechanism 320, the relative distance between the two grinding actuators 312 can be precisely changed. For square steel pipes with different side lengths and cross-sectional dimensions, the spacing of the grinding actuators 312 can be flexibly adjusted through the screw drive mechanism 320, so that the grinding actuators 312 can fit against the surface of the corresponding square steel pipe. This ensures effective contact between the grinding actuators 312 and the surface of the steel pipe, achieving thorough rust removal, while avoiding excessive wear on the surface of the steel pipe due to too small a spacing, or incomplete rust removal due to too large a spacing. This allows the same equipment to meet the rust removal processing needs of square steel pipes of various specifications.

[0034] To address the technical issues arising from the unclear structural design and unreliable adjustment of the screw drive mechanism 320, which lead to insufficient adjustment accuracy and frequent jamming of the grinding actuator 312, such as... Figure 1 and Figure 2 As shown, in some embodiments, the screw drive mechanism 320 includes a screw adjusting rod 321 and a sliding member. The mounting components on the frame 100 restrict the axial and radial displacement of the screw adjusting rod 321, and the screw adjusting rod 321 is rotatably mounted on the frame 100. In the same set of bidirectional grinding mechanisms 310, the sliding member is connected to a grinding execution component 312. The sliding member has a screw hole adapted to the screw adjusting rod 321, so that the sliding member can be driven to slide along the layout direction of the screw adjusting rod 321 through the cooperation of the screw hole and the screw adjusting rod 321, and drive the grinding execution component 312 to move closer to or away from its opposite grinding execution component 312.

[0035] Specifically, two support rings 140 are provided on the frame 100. The two ends of the spiral adjusting rod 321 are rotatably connected to the two support rings 140 through bearings. The support rings 140 ensure that the spiral adjusting rod 321 can rotate freely, while restricting its axial and radial movement. The sliding component is a mounting ring 110 with a driven bevel gear directly above it. The mounting ring 110 has a threaded hole, which forms a precise threaded engagement with the external thread of the spiral adjusting rod 321. The mounting ring 110 is indirectly connected to the frame 100 through the spiral adjusting rod 321. Furthermore, one end of the mounting ring 110 is also sleeved on the connecting shaft above it through a collar 150 to limit the mounting ring 110 to slide only along the axial direction of the spiral adjusting rod 321, preventing the mounting ring 110 from rotating or shifting during movement. Furthermore, the mounting ring 110 on the lower side of the movable grinding actuator 312 is connected to the frame 100 via a slide rail slider; the second bevel gear is slidably mounted on the connecting shaft and rotates synchronously with the connecting shaft, achieving synchronous rotation and axial sliding through a radial limiting structure. To avoid interference between the two on the displacement of the grinding actuator 312, the entire structure (the mounting ring 110 on the lower side of the movable grinding actuator 312, the second bevel gear, and the grinding actuator 312) can all move with the movement of the sliding member (the mounting ring 110 of the movable grinding actuator 312).

[0036] In this way, when the operator rotates the screw adjusting rod 321, the axial thrust generated by the thread engagement drives the mounting ring 110 to move linearly along the axial direction of the screw adjusting rod 321, thereby causing the connected grinding actuator 312 to move synchronously, increasing or decreasing the distance between the grinding actuator 312 and the opposite grinding actuator 312. This structure achieves distance adjustment through purely mechanical thread transmission. The adjustment process is smooth and without jamming, with high adjustment accuracy and reliable positioning. After adjustment, the self-locking characteristic of the thread can keep the position of the grinding actuator 312 fixed, without the need for additional locking components, ensuring the stability of the distance between the grinding actuators 312 during the grinding operation, and further improving the accuracy and reliability of the rust removal operation.

[0037] To address the technical problem of the lack of a dedicated collection structure for the dust adsorbed by the 400 vacuum cleaner, which leads to easy secondary dust scattering and difficult subsequent cleaning, such as... Figure 1 and Figure 2 As shown, in some embodiments, a collection chamber 500 is provided on the frame 100, and the collection chamber 500 is connected to the frame 100 to collect the dust generated during grinding.

[0038] Specifically, the grinding dust can be directly collected into the collection chamber 500 for centralized storage, preventing dust from accumulating inside the equipment or leaking into the working environment, reducing dust pollution to the working environment, and facilitating operators to regularly clean the dust in the collection chamber 500, simplifying the equipment maintenance process, keeping the inside of the equipment clean, and preventing dust accumulation from affecting the normal operation of various components.

[0039] To address the technical problems of insufficient power and weak airflow suction in traditional vacuum cleaner structures, which prevent them from effectively adsorbing the large amounts of dust generated during polishing, some embodiments, such as... Figures 1 to 3 As shown, the vacuuming device 400 includes a roller blade structure 410, the blades of which are driven to rotate by a vacuuming driver 420 to perform vacuuming operations.

[0040] Specifically, the vacuum drive 420, as the power source of the vacuum device 400, is configured as a motor. Its output end is directly connected to the rotating shaft of the roller blade structure 410, providing stable power for the rotation of the blades. When the motor is powered on, it drives the blades of the roller blade structure 410 to rotate at high speed. During the rotation of the blades, the surrounding air is pushed to form a directional airflow, generating a continuous suction force in the grinding work area, which entrains the dust generated during grinding into the airflow and completes the transportation. The blades of the roller blade structure 410 are arranged in a roller shape, which can generate a larger air volume and suction force compared with ordinary fan blade structure. It can quickly and efficiently adsorb various dust generated during the grinding process, avoid dust retention in the work area, improve the working efficiency of the vacuum device 400, and ensure the health of the operator's working environment.

[0041] To solve the problem of using the vacuum cleaner 400, such as Figure 1 and Figure 2 As shown, in some embodiments, a collection chamber 500 is connected to the frame 100, and a dust collection device 400 is connected to and communicates with the collection chamber 500 to form a negative pressure in the collection chamber 500 to adsorb dust.

[0042] Specifically, the collection chamber 500 is fixed on the frame 100 and positioned directly below the two bidirectional grinding mechanisms 310 to collect falling dust. The dust collection device 400 includes a motor, roller blades, and a mounting cylinder. The mounting cylinder is connected to the bottom of the collection chamber 500 via a pipe and is in communication with the collection chamber 500. The motor is installed at the bottom of the mounting cylinder, and its output end is connected to the roller blades to drive the roller blades to rotate inside the mounting cylinder and adsorb the dust in the collection chamber 500. In this way, the collection chamber 500 and the airflow channel of the dust collection device 400 are sealed and connected internally. When the roller blade structure 410 rotates at high speed under the drive of the motor, a negative pressure environment is formed inside the collection chamber 500. Under the combined action of the negative pressure and the airflow from the rotating blades, the dust is quickly sucked into the collection chamber 500 and reaches the roller blade structure 410, thereby preventing the dust from remaining in the grinding actuator.

[0043] To address the technical problem that the dust collection device 400 cannot fully cover the dust-generating area due to the free diffusion of grinding dust, resulting in dust accumulation, in some embodiments, the dust collection device 400 also includes a cover structure that covers the grinding operation area of ​​the grinding device 300.

[0044] Specifically, the cover structure can be, but is not limited to, a square cover. As an auxiliary gathering component of the dust collection device 400, the cover structure directly covers the grinding work area of ​​the grinding device 300, i.e., directly above the collection chamber 500. However, a feed channel of a certain size is reserved to facilitate the entry of the square steel pipe, thus completely enclosing the entire grinding station of the square steel pipe and forming a relatively enclosed working space. In this way, the dust generated during the grinding process is confined within the internal space of the cover structure and cannot diffuse into the external environment. All dust is concentrated within the adsorption range of the dust collection device 400. Combined with the negative pressure adsorption effect of the dust collection device 400, all-round dust adsorption can be achieved. At the same time, the cover structure can block external airflow from interfering with the grinding dust, ensuring the stability of the dust collection airflow, further improving the dust collection effect, and solving the environmental pollution and health hazards caused by grinding dust overflow.

[0045] To facilitate the use of the feeding device 200, such as Figure 1 and Figure 2As shown, in some embodiments, the feeding device 200 is configured as a roller feeding table, which includes a plurality of conveying rollers 210 and a conveying driver 220. The plurality of conveying rollers 210 are rotatably mounted on the frame 100, and adjacent conveying rollers 210 are linked by gear transmission. The conveying driver 220 is mounted on the frame 100, and the output end of the conveying driver 220 is connected to a conveying roller 210 to drive the plurality of conveying rollers 210 to rotate synchronously and convey the square steel pipe to move.

[0046] Specifically, multiple rotating positions for accommodating conveyor rollers 210 are provided on opposite sides of the frame 100. The two ends of several conveyor rollers 210 are rotatably mounted on these rotating positions via bearings, and they are evenly arranged along the conveying direction of the square steel pipe to provide stable support and a foundation for conveying the square steel pipe. A conveyor drive 220 is fixedly installed below the frame 100, and its output end is connected to the rearmost conveyor roller 210 via a belt to transmit power to the roller, causing it to rotate. Adjacent conveyor rollers 210 are linked by meshing gears to form a gear transmission. In this way, under the drive of a single conveyor driver 220, all conveyor rollers 210 can rotate synchronously and at the same speed, so that the square steel pipe can be conveyed from back to front. This avoids the square steel pipe from getting stuck, shifting, or having surface scratches due to different rotation speeds of the conveyor rollers 210. Furthermore, when the square steel pipe is placed on the conveyor rollers 210, it moves smoothly and continuously towards the grinding device 300 in a preset direction under the frictional force of the synchronously rotating conveyor rollers 210, ensuring a stable conveying speed for the square steel pipe and enabling the grinding device 300 to perform uniform and precise rust removal on the surface of the steel pipe.

[0047] When grinding and removing rust from the front end of a square steel pipe, the rear end lacks a positioning device, requiring manual pressing and adjustment, resulting in low automation. To solve this problem, such as... Figure 4 As shown, in some embodiments, the square steel pipe grinding and rust removal equipment 10 further includes an elastic telescopic positioning mechanism 600. The elastic telescopic positioning mechanism 600 includes an outer cover 610, a plurality of elastic elements 620 and an inner cover 630. The outer cover 610 is fixed on the frame 100, and the inner cover 630 is movably arranged relative to the outer cover 610. The elastic elements 620 are abutted between the inner cover 630 and the outer cover 610 so that the inner cover 630 elastically abuts against the upper side, left side and right side of the square steel pipe.

[0048] Specifically, the outer cover 610, serving as the rigid mounting carrier of the mechanism, is fixedly connected to the frame 100 of the equipment, providing a stable mounting reference for the overall mechanism, and is positioned directly above several conveying rollers 210. The inner cover 630 and the outer cover 610 are assembled in a movable fit, allowing for adaptive displacement relative to the outer cover 610. Multiple elastic elements 620 are respectively arranged between the inner cover 630 and the outer cover 610 in an end-to-end abutment assembly manner. Relying on the elastic pre-tightening force of the elastic elements 620, the inner cover 630 is driven to always have a tendency to conform to one side of the square steel tube, thereby enabling the inner cover 630 to elastically abut against the upper, left, and right sides of the square steel tube. While achieving multi-faceted positioning and limiting of the square steel tube, it can also adapt to square steel tubes of different cross-sectional specifications through its own elastic expansion and contraction, ensuring the effectiveness of positioning and conformation.

[0049] To improve the usability and smoothness of transport of the inner cover 630, such as Figure 4 As shown, in some embodiments, the inner cover 630 includes an independent upper pressure plate 631, a left clamping plate 632, and a right clamping plate 633; ​​on the working surfaces of the upper pressure plate 631, the left clamping plate 632, and the right clamping plate 633 facing the square steel tube, multiple sets of independently rotating precision needle rollers 634 are arranged at equal intervals along the conveying direction of the square steel tube. The needle rollers 634 are partially protruding from the working surface so that the needle rollers 634 make rolling contact with the square steel tube.

[0050] Specifically, the outer cover 610 is a frame-type cavity structure, fixedly mounted on the frame 100. A guide sleeve is provided on its inner top, and transverse guide grooves are symmetrically formed on its left and right walls. Both are arranged on the outer periphery of the steel pipe conveying channel, without any inwardly protruding interference structures, providing a foundation for the installation and guidance of internal moving parts, ensuring the smooth flow of the square steel pipe. The inner cover 630 consists of three independent components: an upper pressure plate 631, a left clamping plate 632, and a right clamping plate 633. A guide rod is fixedly connected to the outer side of the upper pressure plate 631, forming a sliding fit with the guide sleeve of the outer cover 610, allowing only vertical floating. The outer sides of the left clamping plate 632 and the right clamping plate 633 have formed engagement bosses, which slide with the transverse guide grooves of the outer cover 610, allowing them to move only in a horizontal direction perpendicular to the steel pipe conveying, thus avoiding interference with the steel pipe conveying. The elastic element 620 is a combination of polyurethane spring and alloy compression spring, respectively sleeved on the guide slide rod of the upper pressure plate 631, the outside of the boss of the left clamping plate 632, and the outside of the boss of the right clamping plate 633. Its two ends respectively abut against the outer cover 610 and the corresponding inner cover 630's partition plates to provide elastic preload. Furthermore, the outer cover 610 is equipped with limit screws at the corresponding guide fit positions. By adjusting the screw-in depth, the extension and retraction stroke of the inner cover 630's partition plates is limited, preventing excessive displacement and compression of the square steel tube.

[0051] Among them, the upper pressure plate 631, the left clamping plate 632 and the right clamping plate 633 are all provided with needle roller mounting grooves on their working surfaces facing the square steel pipe. The needle rollers 634 are embedded in the mounting grooves by retainers. The retainers cooperate with the mounting grooves to limit the movement and prevent the needle rollers 634 from falling off. Multiple sets of needle rollers 634 are arranged at equal intervals along the steel pipe conveying direction and can rotate independently and freely. The needle rollers 634 protrude from the working surface of the corresponding plate and directly form rolling contact with the outer wall of the square steel pipe. This changes the traditional surface contact sliding friction between the square steel pipe and the positioning mechanism into rolling friction during the conveying process. While maintaining the elastic limiting and positioning effect of the inner cover 630 on the square steel pipe, it effectively reduces the running resistance of the steel pipe during conveying and ensures smooth long-distance conveying of the steel pipe.

[0052] To ensure the synchronous movement of the left clamping plate 632 and the right clamping plate 633, in some embodiments, horizontal transmission racks (not shown in the figure) are fixedly provided on the inner sides of the left clamping plate 632 and the right clamping plate 633 facing each other. The two transmission racks are parallel and at the same height, and their teeth are arranged opposite each other. The outer cover 610 is equipped with a synchronous gear (not shown in the figure) in the area between the two transmission racks through a rotating shaft with bearings. The synchronous gear meshes stably with the transmission racks on both sides at the same time, so that when one side of the clamping plate is displaced, it can drive the other side of the clamping plate to make an equidistant reverse displacement through meshing transmission, so as to realize the synchronous tightening or expansion of the left and right clamping plates 633 in opposite directions.

[0053] Specifically, horizontal transmission racks are fixedly installed on the inner surfaces of the left clamping plate 632 and the right clamping plate 633, which face each other. The two transmission racks are assembled in a parallel and equal-height state, with their teeth facing each other. The rotating shaft of the fixed synchronous gear is assembled into the cavity of the outer cover 610 through bearings and is precisely positioned at a preset installation position between the two transmission racks, so that the rotating shaft retains only the degree of freedom of rotation around its own axis. The synchronous gear and the rotating shaft are connected by a key to achieve synchronous rotation of the two, and the teeth of the synchronous gear and the transmission racks on both sides maintain a continuous and stable meshing state. In this way, when the square steel tube is inserted and squeezes the clamping plate on one side, causing displacement, the clamping plate will drive its corresponding transmission rack to move synchronously, thereby driving the synchronous gear to rotate with the rotating shaft. Then, through gear meshing, it will drive the transmission rack on the other side and the clamping plate to make equidistant reverse movements, ensuring that the left clamping plate 632 and the right clamping plate 633 move synchronously, so that the square steel tube is always in the center position of the conveying channel, effectively improving the centering and positioning accuracy. Furthermore, it is understandable that the entire gear and rack transmission mechanism is located in the outer area of ​​the square steel pipe conveying channel, and will not interfere with the square steel pipe. Of course, it will also not interfere with the structure of the elastic element.

[0054] To facilitate the insertion of square steel pipes, such as Figure 4As shown, in some embodiments, the feeding ends of the upper pressure plate 631, the left clamping plate 632 and the right clamping plate 633 are all integrally formed with an outwardly expanding sliding surface. The sliding surface gradually expands from the inside to the outside to guide the square steel tube to smoothly enter the clamping and positioning area of ​​the elastic telescopic positioning mechanism 600.

[0055] Specifically, the ends of the upper pressure plate 631, the left clamping plate 632, and the right clamping plate 633 facing the steel pipe feeding direction are all machined into an integrally formed outwardly expanding sliding surface. The sliding surface smoothly transitions with the working surface of each plate, forming a trumpet-shaped guide structure that gradually narrows from the outside to the inside. This structure can adaptively correct the entry posture of the square steel pipe when it enters the positioning mechanism, guiding the slightly skewed steel pipe to smoothly and without jamming into the three-sided clamping and positioning area, avoiding rigid collision between the end of the steel pipe and the end face of the plate, and improving the smoothness and stability of the feeding process.

[0056] It should be noted that the specific components of the square steel pipe grinding and rust removal equipment 10 in the above technical solution are all components in the existing technology, such as motors, cylinders, needle rollers 634, etc., which will not be described in detail in this solution.

[0057] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0058] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0059] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0060] In this invention, unless otherwise expressly specified and limited, "above or below" a first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0061] Although the description of the invention has been given in conjunction with the specific embodiments described above, it will be apparent to those skilled in the art that many substitutions, modifications, and variations can be made based on the foregoing. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.

Claims

1. A square steel pipe grinding and rust removal device, characterized in that, It includes a frame, feeding device, grinding device, and dust collection device; The feeding device, the grinding device and the dust collection device are all mounted on the frame, and the dust collection device is positioned close to the grinding device to absorb the dust generated by the grinding device during operation. The grinding device includes two sets of bidirectional grinding mechanisms for grinding two opposite surfaces of a square steel pipe. The two sets of bidirectional grinding mechanisms are spaced apart from each other and the grinding directions are perpendicular to each other, so as to work together to grind the four surfaces of the square steel pipe.

2. The square steel pipe grinding and rust removal equipment according to claim 1, characterized in that, The bidirectional grinding mechanism includes a grinding driver and two grinding execution components. The grinding driver is mounted on the frame, and its output end is connected to one of the grinding execution components to drive the grinding execution component to rotate. The two grinding execution components in the bidirectional grinding mechanism are linked by gear transmission to synchronously grind the two opposite surfaces of the square steel pipe.

3. The square steel pipe grinding and rust removal equipment according to claim 2, characterized in that, In the same set of bidirectional grinding mechanisms, the spacing between the grinding execution components arranged opposite to each other is adjusted by a screw transmission mechanism to adapt to square steel pipes of different specifications.

4. The square steel pipe grinding and rust removal equipment according to claim 3, characterized in that, The spiral transmission mechanism includes a spiral adjusting rod and a sliding member. The mounting components on the frame restrict the axial and radial displacement of the spiral adjusting rod, and the spiral adjusting rod is rotatably mounted on the frame. In the same set of bidirectional grinding mechanisms, the sliding member is connected to a grinding execution component. The sliding member has a screw hole adapted to the spiral adjusting rod, so that the sliding member can be driven to slide along the layout direction of the spiral adjusting rod through the cooperation of the screw hole and the spiral adjusting rod, and drive the grinding execution component to move closer to or away from its opposite grinding execution component.

5. The square steel pipe grinding and rust removal equipment according to claim 2, characterized in that, The grinding execution component of the bidirectional grinding mechanism is any one of a wire brush grinding wheel, a belt grinding assembly, or a flap grinding roller.

6. The square steel pipe grinding and rust removal equipment according to claim 1, characterized in that, The frame is equipped with a collection chamber, which is connected to the frame to collect the dust generated during grinding.

7. The square steel pipe grinding and rust removal equipment according to claim 1, characterized in that, The vacuuming device includes a roller blade structure, the blades of which are driven to rotate by a vacuuming driver to perform vacuuming operations.

8. The square steel pipe grinding and rust removal equipment according to claim 1, characterized in that, The feeding device is configured as a roller feeding platform, which includes several conveying rollers and a conveying driver. The several conveying rollers are rotatably mounted on the frame, and adjacent conveying rollers are linked by gear transmission. The conveying driver is mounted on the frame, and the output end of the conveying driver is connected to one of the conveying rollers to drive the several conveying rollers to rotate synchronously and convey the square steel pipe to move.

9. The square steel pipe grinding and rust removal equipment according to claim 1, characterized in that, It also includes an elastic telescopic positioning mechanism, which includes an outer cover, multiple elastic elements and an inner cover. The outer cover is fixed on the frame, and the inner cover is movably disposed relative to the outer cover. The elastic elements are abutted between the inner cover and the outer cover, so that the inner cover elastically abuts against the upper side, left side and right side of the square steel pipe.

10. The square steel pipe grinding and rust removal equipment according to claim 9, characterized in that, The inner cover includes an independent upper pressure plate, a left clamping plate, and a right clamping plate. On the working surfaces of the upper pressure plate, the left clamping plate, and the right clamping plate facing the square steel pipe, multiple sets of independently rotating precision needle rollers are arranged at equal intervals along the conveying direction of the square steel pipe. The needle rollers are partially protruding from the working surfaces so that they make rolling contact with the square steel pipe.

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