Intelligent variable-frequency scraping device

Abstract

An intelligent variable-frequency scraping device. By means of mutual cooperation of an electric actuator (2) and a torque sensor (12), the electric actuator (2) is used to drive a connecting rod and a cross beam square pipe (4) to turn synchronously, such that a sweeper blade (7) abuts against the outer side of a conveyor belt of an external conveyor for sweeping. When a blade edge (74) is worn and a gap is formed between the sweeper blade (7) and the conveyor belt, the torque force of the sweeper blade (7) is reduced, and at this time, the torque sensor (12) detects a change in torque and feeds back the change to a PLC control box, and the electric actuator (2) is controlled to drive the sweeper blade (7) to deflect again, such that the blade edge abuts against the outer side of the conveyor belt again. An automatic compensation function can be implemented on the basis of a wear degree of the blade, and compared with conventional technology, the device does not require abutment based on a spring, so that a constant pressure can be always kept between the sweeper blade (7) and the conveyor belt, thereby preventing the conveyor belt from being excessively worn, and effectively prolonging the service life of the conveyor belt.

Description

An intelligent frequency conversion scraping device Technical Field

[0001] The present application relates to the field of scraper plates, and in particular to an intelligent variable frequency scraper device. Background Art

[0002] During the conveying process of a belt conveyor, if residual material enters the roller or roller bearing seat, it will accelerate bearing wear. Material sticking to the surface of the roller or roller will tear and roughen the conveyor belt surface, accelerating the wear and damage of the conveyor belt. If material adheres to the surface of the redirection roller or vertical tension roller at the tail end of the belt conveyor and clumps, it will cause the conveyor belt to deviate, increase conveyor belt wear, and even tear the roller cover, resulting in serious consequences. Therefore, a cleaning device must be installed.

[0003] A good cleaning device can extend the service life of rollers, conveyor belts, and drums. Therefore, the cleaning ability of a cleaner plays a crucial role in improving the operating efficiency and reliability of belt conveyors, reducing equipment failure rates, and lowering maintenance costs. Existing products have the following problems: 1) When the cleaner blade wears, the spring must be manually tightened to ensure that the blade presses against the belt and achieves a cleaning effect. The pressure difference before and after the blade wears is large, so to ensure the cleaning effect, increased pressure is usually required. Higher pressure can damage the belt; 2) Existing cleaners lack precise limiters and torque feedback devices. When the blade wears to its limit, it can damage the belt or reduce the cleaning effect.

[0004] To this end, we propose an intelligent variable frequency scraping device to solve the above problems.

[0005] Summary of the Invention

[0006] The purpose of this application is to design a scraper device that can realize automatic compensation function according to the degree of wear of the blade. When the blade is worn excessively, an alarm signal can be generated to remind replacement, so that a constant pressure is always maintained between the blade and the belt to reduce the degree of wear of the transmission belt and increase the service life. Compared with the existing technology, an intelligent variable frequency scraper device is provided, which is provided by an electric actuator, a transmission box and a cleaning component arranged between two sets of connecting frames. A coupling and a torque sensor are provided in the transmission box. The output shaft of the electric actuator extends through the transmission box. The output shaft passes through the torque sensor and is connected to one end of the coupling. The other end of the coupling is connected to the cleaning component. The electric actuator is fixed to the bottom of the connecting frame on the left side through the transmission box;

[0007] The cleaning assembly includes a crossbeam square tube, a cleaner blade and a connecting rod. The crossbeam square tube is welded by a seamless square tube and a convex beam, and the convex beam is welded to the middle of the seamless square tube; the cleaner blade is fixedly connected to the convex beam;

[0008] The connecting rod includes a left connecting rod and a right connecting rod. A connecting flange is welded on one side of the left connecting rod, and the connecting flange on this side is fixedly connected to the end of the coupling away from the torque sensor. The right connecting rod passes through the connecting frame on the right side. The opposite ends of the left connecting rod and the right connecting rod are both sleeved in the square tube of the crossbeam. The two sets of opposite connecting frames are fixed to the frame of the external conveyor. Rubber buffer blocks are fixed at the connection nodes of the transmission box, the connecting frame and the left and right connecting rods. Nylon sleeves are sleeved on the left and right connecting rods. The rubber buffer block has a ring structure, and there is damping force between the nylon sleeve and the rubber buffer block.

[0009] Furthermore, the transmission box includes a left transmission box mounting plate, a transmission box main body mounting frame and a right transmission box mounting plate, and the left transmission box mounting plate and the right transmission box mounting plate are both detachably connected to the transmission box main body mounting frame by bolts.

[0010] Furthermore, the left transmission box mounting plate is provided with a middle circular hole for mounting the output end of the electric actuator. The electric actuator is fixed on the left transmission box mounting plate, and the right transmission box mounting plate is fixed on the left connecting frame.

[0011] Furthermore, the sweeper blade includes a blade body and a blade base, the blade body includes a blade tip and a blade body, the blade tip and the blade body are both arc-shaped, the blade tip and the blade body have an arc-shaped transition on the outside, and a transition groove is provided on the inside of the blade tip and the blade body, so that the connection node between the two forms a wavy transition.

[0012] Furthermore, a snap-fit ​​groove matching the convex beam is provided at the bottom of the blade base, and positioning notches are provided on both sides of the blade base. The positioning notches are connected to the snap-fit ​​groove, and a positioning hole matching the connecting notch is provided on the convex beam. The blade base is fixed to the convex beam by a locking bolt.

[0013] Furthermore, the blade base is a metal structure, the blade body is a polyurethane structure, the blade base and the blade body are hot-melt connected, and the outer side of the blade base is provided with an anti-slip ridge at the contact portion with the blade body.

[0014] Furthermore, a penetrating weight-reducing hole is provided on the blade body, and the weight-reducing hole has a triangular cross-sectional structure.

[0015] Furthermore, both ends of the bottom of the crossbeam square tube are provided with adjusting bolts, and one end of the connecting rod is fixed to the end of the crossbeam square tube through the adjusting bolts.

[0016] Furthermore, the sweeper blades can be matched in two groups according to actual usage requirements, one group of sweeper blades is 50%-60% of the normal conveyor belt bandwidth, and the other group of sweeper blades is 85%-95% of the normal bandwidth. The two groups of sweeper blades can be respectively set at the tangent position of the arc in the transmission direction of the conveyor belt.

[0017] Furthermore, the torque sensor and the electric actuator are connected to a PLC control box via wires.

[0018] Compared with the existing technology, the advantages of this application are:

[0019] (1) The present invention cooperates with the transmission box with an electric actuator and a torque sensor and the crossbeam square tube with a sweeper blade. During actual use, the electric actuator drives the connecting rod and the crossbeam square tube to flip synchronously, so that the tip of the sweeper blade contacts the outside of the conveyor belt of the external conveyor with a fixed torque to perform cleaning operations. When the tip of the blade wears and there is a gap between the sweeper blade and the conveyor belt, the torque of the sweeper blade decreases. At this time, the torque change is detected by the torque sensor and fed back to the PLC control box. The PLC control box controls the electric actuator to drive the sweeper blade to deflect again, so that the tip of the blade contacts the outside of the conveyor belt again. According to the degree of wear of the blade, the automatic compensation function can be realized. Compared with traditional technologies, it does not require the use of springs for contact operations, so that a constant pressure can be maintained between the sweeper blade and the conveyor belt, avoiding excessive wear of the conveyor belt and effectively improving the service life of the conveyor belt.

[0020] (2) Due to the arc-shaped structural design of the sweeper blade, when the sweeper blade itself is excessively worn, the sweeper blade cannot always contact the outside of the conveyor belt during the flipping process of the electric actuator. At this time, the torque sensor has no torque feedback value. The PLC control box can judge that the sweeper blade is in a state of excessive wear and can generate an alarm signal to remind maintenance personnel to replace the sweeper blade.

[0021] (3) The design of the weight-reducing hole can effectively reduce the weight of the sweeper blade and reduce the manufacturing cost. The design of the convex beam and positioning notch makes the replacement of the sweeper blade simple and convenient, effectively improving its maintenance efficiency.

[0022] (4) One set of narrower cleaner blades performs the primary cleaning operation, which has a better cleaning effect on the concave deformation in the middle of the belt caused by the material transport part. The other set of wider cleaner blades performs the secondary cleaning operation, which can perform a more comprehensive secondary cleaning of the residual materials after the primary cleaning. The primary cleaner and the secondary cleaner can adjust the constant and appropriate pressure of the cleaner according to their own installation positions, so that each level of cleaner can achieve the best cleaning effect without damaging the belt.

[0023] (5) During the actual installation process, the spacing of the connecting frame can be adjusted according to the frame width of the external conveyor on site, and tightened by adjusting the bolts. At the same time, the sweeper blade of the corresponding width can be replaced to meet the installation requirements of external conveyors of different widths. It has strong adaptability and is convenient and efficient to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of the front structure of the present application;

[0025] FIG2 is a schematic diagram of the side structure of the present application;

[0026] FIG3 is a schematic diagram of the explosion structure of the present application;

[0027] FIG4 is a schematic diagram of the structure of the crossbeam square tube proposed in this application;

[0028] FIG5 is a schematic structural diagram of the sweeper blade proposed in this application;

[0029] FIG6 is an enlarged structural diagram of portion A in FIG5 ;

[0030] FIG7 is a schematic diagram of the cross-sectional structure of the present application;

[0031] FIG8 is a schematic diagram of the installation position of the dual-set sweeper blades proposed in this application;

[0032] FIG9 is a comparative schematic diagram of the dual sets of sweeper blades proposed in this application;

[0033] FIG10 is a schematic diagram of the connection frame spacing adjustment proposed in this application.

[0034] Description of the numbers in the figure:

[0035] Transmission box 1, coupling 11, torque sensor 12, rubber buffer block 13, nylon sleeve 14, electric actuator 2, left connecting rod 3, crossbeam square tube 4, convex beam 41, adjusting bolt 42, locking bolt 43, connecting frame 5, right connecting rod 6, sweeper blade 7, blade base 71, positioning notch 72, weight reduction hole 73, blade tip 74, transition groove 75. DETAILED DESCRIPTION

[0036] The embodiments will be combined with the drawings in the specification to clearly and completely describe the technical solution of this application. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative work shall fall within the scope of protection of this application.

[0037] Example 1:

[0038] The present invention provides an intelligent variable frequency scraping device, as shown in Figures 1-7, comprising an electric actuator 2, a transmission box 1, and a cleaning assembly disposed between two sets of connecting frames 5. A coupling 11 and a torque sensor 12 are disposed within the transmission box 1. The torque sensor 12 and the electric actuator 2 are both connected to a PLC control box via wires.

[0039] The output shaft of the electric actuator 2 extends through the transmission box 1, and the output shaft passes through the torque sensor 12 and is connected to one end of the coupling 11. The other end of the coupling 11 is connected to the cleaning component. The electric actuator 2 is fixed to the bottom of the connecting frame on the left side through the transmission box 1; the cleaning component includes a crossbeam square tube 4, a sweeper blade 7 and a connecting rod. The crossbeam square tube 4 is welded by a seamless square tube and a convex beam 41, and the convex beam is welded to the middle of the seamless square tube; the sweeper blade 7 is engaged with the convex beam and is fixedly connected; the connecting rod includes a left connecting rod 3 and a right connecting rod 6, and one side of the left connecting rod 3 is welded Flange, the connecting flange on this side is fixedly connected to the end of the coupling 11 away from the torque sensor 12, the right connecting rod 6 passes through the connecting frame 5 on the right side, and the opposite ends of the left connecting rod 3 and the right connecting rod 6 are both sleeved in the crossbeam square tube 4. The two sets of opposite connecting frames are fixed to the frame of the external conveyor, and rubber buffer blocks 13 are fixed at the connection nodes of the transmission box 1, the connecting frame 5 and the left connecting rod 3 and the right connecting rod 6. Nylon sleeves 14 are sleeved on the left connecting rod 3 and the right connecting rod 6. The rubber buffer block 13 has a ring structure, and there is a damping force between the nylon sleeve 14 and the rubber buffer block 13.

[0040] The present invention cooperates with the transmission box 1 with the electric actuator 2 and the torque sensor 12 and the crossbeam square tube 4 with the sweeper blade 7. During actual use, the electric actuator 2 drives the connecting rod and the crossbeam square tube 4 to flip synchronously, so that the tip 74 of the sweeper blade 7 is in contact with the outer side of the conveyor belt of the external conveyor with a fixed torque to perform a cleaning operation. When the tip 74 is worn and there is a gap between the sweeper blade 7 and the conveyor belt, the torque of the sweeper blade 7 is reduced. At this time, the torque change is detected by the torque sensor 12 and fed back to the PLC control box. The PLC control box controls the electric actuator 2 to drive the sweeper blade 7 to deflect again, so that the tip 74 is in contact with the outer side of the conveyor belt again. The automatic compensation function can be realized according to the degree of wear of the blade. Compared with the traditional technology, it does not require the use of a spring for the resistance operation, so that a constant pressure can be maintained between the sweeper blade 7 and the conveyor belt, thereby avoiding excessive wear of the conveyor belt and effectively improving the service life of the conveyor belt.

[0041] It should be noted that, in this embodiment, the transmission box 1 includes a left transmission box mounting plate, a transmission box main body mounting frame and a right transmission box mounting plate. The left transmission box mounting plate and the right transmission box mounting plate are both detachably connected to the transmission box main body mounting frame by bolts. The left transmission box mounting plate is provided with a middle circular hole for mounting the output end of the electric actuator 2. The electric actuator 2 is fixed on the left transmission box mounting plate, and the right transmission box mounting plate is fixed on the connecting frame 5 on the left.

[0042] Furthermore, in this embodiment, the sweeper blade 7 includes a blade body and a blade base 71. The blade body includes a blade tip 74 and a blade body. The blade tip 74 and the blade body are both arc-shaped, and the blade tip 74 and the blade body have an arc-shaped transition on the outer side. The blade tip 74 and the inner side of the blade body are provided with a transition groove 75, so that the connection node between the two forms a wavy transition. The bottom of the blade base 71 is provided with a snap-fit ​​groove matching the convex beam 41, and positioning notches 72 are also provided on both sides of the blade base 71. The positioning notches 72 are connected to the snap-fit ​​grooves, and a positioning hole matching the connecting notch is provided on the convex beam 41. The blade base 71 is fixed to the convex beam 41 by a locking bolt 43.

[0043] Due to the structural design of the arc-shaped sweeper blade 7, when the sweeper blade 7 itself is excessively worn, the sweeper blade 7 cannot always contact the outside of the conveyor belt during the flipping process of the electric actuator 2. At this time, the torque sensor 12 has no torque feedback value. The PLC control box can judge that the sweeper blade 7 is in a state of excessive wear and can generate an alarm signal to remind maintenance personnel to replace the sweeper blade 7.

[0044] Among them, the blade base 71 is a metal structure, the blade body is a polyurethane structure, the blade base 71 is hot-melt connected to the blade body, the outer side of the blade base 71 is in contact with the blade body at the position with anti-slip ridges, and the blade body is also provided with a penetrating weight-reducing hole 73, the weight-reducing hole 73 has a triangular cross-sectional structure, and adjusting bolts 42 are provided at both ends of the bottom of the crossbeam square tube 4, and one end of the connecting rod is fixed to the end of the crossbeam square tube 4 by the adjusting bolt 42.

[0045] The design of the weight-reducing hole 73 can effectively reduce the weight of the sweeper blade 7 and reduce the manufacturing cost. The design of the convex beam 41 and the positioning notch 72 makes the replacement of the sweeper blade 7 simple and convenient, effectively improving its maintenance efficiency.

[0046] Example 2:

[0047] The present invention provides an intelligent variable frequency scraping device. Please refer to Figures 1-9, wherein the same or corresponding components as those in Example 1 are marked with the same reference numerals as those in Example 1. For simplicity, only the differences from Example 1 are described below:

[0048] The sweeper blades 7 can be matched with two groups according to actual usage requirements, one group of sweeper blades 7 is 50%-60% of the normal conveyor belt bandwidth, and the other group of sweeper blades 7 is 85%-95% of the normal bandwidth. The two groups of sweeper blades 7 can be respectively set at the tangent position of the arc in the transmission direction of the conveyor belt.

[0049] One set of narrower cleaner blades 7 performs primary cleaning operations, which has a better cleaning effect on the concave deformation in the middle of the belt caused by the material transport part. Another set of wider cleaner blades 7 performs secondary cleaning operations, which can provide a more comprehensive secondary cleaning of the residual materials cleaned in the first stage. The primary cleaner and the secondary cleaner can adjust the constant and appropriate pressure of the cleaner separately according to their own installation positions, so that each stage of the cleaner can achieve the best cleaning effect without damaging the belt.

[0050] Example 3:

[0051] The present invention provides an intelligent variable frequency scraping device. Please refer to Figures 1-10, wherein the same or corresponding components as those in Example 1 are marked with the same reference numerals as those in Example 1. For simplicity, only the differences from Example 1 are described below:

[0052] During the actual installation process, the spacing of the connecting frame 5 can be adjusted according to the frame width of the external conveyor on site, and tightened by adjusting the bolts 42. At the same time, the sweeper blade 7 of the corresponding width can be replaced to meet the installation requirements of external conveyors of different widths. It has strong adaptability and is convenient and efficient to install.

[0053] The above is only the best implementation method adopted by this application in combination with current actual needs, but the scope of protection of this application is not limited to this.

Claims

1. An intelligent variable frequency scraper device, comprising an electric actuator (2), a transmission box (1) and a cleaning component arranged between two sets of connecting frames (5), characterized in that: The transmission box (1) is provided with a coupling (11) and a torque sensor (12); the output shaft of the electric actuator (2) extends through the transmission box (1); the output shaft passes through the torque sensor (12) and is connected to one end of the coupling (11); the other end of the coupling (11) is connected to a cleaning component; the electric actuator (2) is fixed to the bottom of the left connecting frame through the transmission box (1); The cleaning assembly comprises a crossbeam square tube (4), a cleaning blade (7) and a connecting rod, wherein the crossbeam square tube (4) is welded from a seamless square tube and a convex beam (41), and the convex beam is welded to the middle of the seamless square tube; the cleaning blade (7) is clamped on the convex beam and fixedly connected; The connecting rod comprises a left connecting rod (3) and a right connecting rod (6). A connecting flange is welded on one side of the left connecting rod (3). The connecting flange is fixedly connected to one end of the coupling (11) away from the torque sensor (12). The right connecting rod (6) passes through the connecting frame (5) on the right side. The opposite ends of the left connecting rod (3) and the right connecting rod (6) are both sleeved in the crossbeam square tube (4). The two sets of opposite connecting frames are fixedly connected to the frame of the external conveyor. Rubber buffer blocks (13) are fixed at the connection nodes of the transmission box (1), the connecting frame (5) and the left connecting rod (3) and the right connecting rod (6). Nylon sleeves (14) are sleeved on the left connecting rod (3) and the right connecting rod (6). The rubber buffer block (13) is annular in structure. There is a damping force between the nylon sleeve (14) and the rubber buffer block (13).

2. The intelligent variable frequency scraper device according to claim 1, characterized in that: The transmission box (1) comprises a left transmission box mounting plate, a transmission box main body mounting frame and a right transmission box mounting plate, wherein the left transmission box mounting plate and the right transmission box mounting plate are both detachably connected to the transmission box main body mounting frame by bolts.

3. The intelligent variable frequency scraping device according to claim 2, characterized in that: The left transmission box mounting plate is provided with a middle circular hole for mounting the output end of the electric actuator (2); the electric actuator (2) is fixed on the left transmission box mounting plate; and the right transmission box mounting plate is fixed on the left connecting frame (5).

4. The intelligent variable frequency scraper device according to claim 1, characterized in that: The sweeper blade (7) comprises a blade body and a blade base (71), the blade body comprises a blade tip (74) and a blade body, the blade tip (74) and the blade body are both arc-shaped, the blade tip (74) and the blade body have an arc-shaped transition on the outer side, and a transition groove (75) is provided on the inner side of the blade tip (74) and the blade body, so that the connection node between the two forms a wave-shaped transition.

5. The intelligent variable frequency scraping device according to claim 4, characterized in that: The bottom of the blade base (71) is provided with a clamping groove matching the convex beam (41), and positioning notches (72) are also provided on both sides of the blade base (71). The positioning notches (72) are connected to the clamping groove, and the convex beam (41) is provided with a positioning hole matching the connecting notch. The blade base (71) is fixed to the convex beam (41) by a locking bolt (43).

6. The intelligent variable frequency scraper device according to claim 4, characterized in that: The blade base (71) is a metal structure, the blade body is a polyurethane structure, the blade base (71) is connected to the blade body by hot melt, and an anti-slip ridge is provided at the outer side of the blade base (71) where it contacts the blade body.

7. The intelligent variable frequency scraper device according to claim 6, characterized in that: The blade body is also provided with a penetrating weight-reducing hole (73), and the weight-reducing hole (73) is in a triangular structure in cross section.

8. The intelligent variable frequency scraper device according to claim 1, characterized in that: Both ends of the bottom of the cross beam square tube (4) are provided with adjustment bolts (42), and one end of the connecting rod is fixed to the end of the cross beam square tube (4) through the adjustment bolts (42).

9. The intelligent variable frequency scraper device according to claim 1, characterized in that: The sweeper blades (7) can be matched with two groups according to actual usage requirements, wherein one group of sweeper blades (7) is 50%-60% of the normal conveyor belt bandwidth, and the other group of sweeper blades (7) is 85%-95% of the normal bandwidth. The two groups of sweeper blades (7) can be respectively set at the tangent positions of the arc in the conveying direction of the conveyor belt.

10. The intelligent variable frequency scraper device according to claim 1, characterized in that: The torque sensor (12) and the electric actuator (2) are both connected to a PLC control box via wires.

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