Rotary type angle steel excess material collecting device and collecting method thereof

Abstract

The invention belongs to the field of excess material treatment, and relates to a rotary type angle steel excess material collecting device and a collecting method thereof. A first hollow rotating platform is installed on the upper portion of a rack, a receiving hopper is installed on the first hollow rotating platform, an upper end opening of the receiving hopper is of a horn-shaped structure, a first distributing opening is welded to one side of the central axis of a lower end opening of the receiving hopper, and the first distributing opening inclines downwards from the center to the outer side; the other side of the central axis of the lower end opening is a second material distributing opening, the trumpet-shaped structure is located above the first hollow rotating platform, and the material distributing opening is located below the first hollow rotating platform; the pair of material receiving bins are mounted on the rotary transposition mechanism, and one material receiving bin is located under the material receiving hopper after transposition; a control mechanism is further included. According to the receiving method of the excess angle steel receiving device, the control mechanism is matched with the weighing sensor to control operation of the excess angle steel receiving device. Angle steel excess materials can fall into the material receiving bin in a scattered mode, and convenient replacement of the material receiving bin is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of waste material processing, and in particular relates to a rotary angle steel waste material collecting device and a collecting method thereof. Background Art

[0002] The power tower is assembled from a number of angle steel segments. At present, in the processing workshop of the angle steel segments, a semi-automatic angle steel punching and shearing production line is used to complete the shearing and punching of the angle steel raw materials to produce the angle steel segments. The tailings and heads left after the angle steel raw materials are sheared, and the round steel plate residues produced by punching the angle steel raw materials will fall directly to the ground. In the present invention, the tailings and heads and round steel plate residues produced by the processing of the angle steel raw materials are collectively referred to as angle steel residues, and the recovery of the angle steel residues is time-consuming and labor-intensive.

[0003] In order to solve the problem of difficult recycling of angle steel residues, the angle steel production line has been optimized and upgraded, and a residual angle steel collecting mechanism has been added to the production line. The residual angle steel is lifted to a certain height by the chain plate line hoist and poured into the collecting mechanism until the collecting mechanism is full and then transported away by the AGV car. When the residual angle steel is poured into the collecting mechanism by the chain plate line hoist, the residual angle steel falls from the same position at a high place into the collecting mechanism, which will cause the residual angle steel to pile up at the falling position in the collecting mechanism, and the residual angle steel is not easy to disperse around the collecting mechanism; moreover, there is no automatic judgment mechanism for whether the collecting mechanism is full, resulting in the failure to detect the full warehouse in time and replace the collecting mechanism in time, causing the residual angle steel to scatter on the ground, which in turn causes the production line to stop for a long time to clean the residual angle steel, affecting the processing efficiency of the segmented angle steel. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a rotary angle steel surplus material collecting device and a collecting method thereof. The technical solution adopted by the present invention is as follows: A rotary angle steel surplus material collecting device comprises a frame, a first hollow rotating platform is installed at the upper center position of the frame, a material receiving hopper passes through the center of the first hollow rotating platform and is installed on the first hollow rotating platform, the middle body of the material receiving hopper is a cylindrical structure, the upper port of the material receiving hopper is a trumpet-shaped structure that is wide at the top and narrow at the bottom, a first material distribution port is welded on one side of the central axis of the lower port of the material receiving hopper, the first material distribution port is an inclined cylindrical structure inclined from the center to the outside and downward, and the other side of the central axis of the lower port of the material receiving hopper is a second material distribution port, the second material distribution port is vertically downward, the trumpet-shaped structure is located above the first hollow rotating platform, and the first material distribution port and the second material distribution port are located below the first hollow rotating platform; a pair of material receiving bins are installed on the rotary transposition mechanism, and one of the material receiving bins is located directly below the first material distribution port and the second material distribution port after transposition; and also includes a control mechanism, and the control mechanism is electrically connected to the first hollow rotating platform and the rotary transposition mechanism respectively to realize data interaction.

[0005] Preferably, the rotary transposition mechanism includes a second hollow rotating platform, a transposition base with a rectangular plate structure is centrally installed above the second hollow rotating platform, a pair of material receiving bins are fixedly installed in the length direction of the transposition base, a first in-place detection column and a second in-place detection column are respectively installed at the middle positions of both ends of the lower surface of the length direction of the transposition base, a travel switch cooperates with the first in-place detection column and the second in-place detection column, and the bottom end of the travel switch is fixedly installed on the ground or on the material distribution work surface.

[0006] Preferably, a pair of material receiving bins are placed on a first pallet and a second pallet respectively, a first weighing sensor is arranged at the four corners of the lower surface of the first pallet, and a second weighing sensor is arranged at the four corners of the lower surface of the second pallet, and the legs of the first weighing sensor and the second weighing sensor are fixedly connected to the upper surface of the transposition base.

[0007] Preferably, a leg plate is fixedly installed on the bottom of the material receiving bin, and limiting eaves are integrally formed on the four peripheral edges of the first and second support plates, or limiting protrusions are glued on the four peripheral edges of the first and second support plates, and the limiting eaves or limiting protrusions cooperate with the leg plates.

[0008] Preferably, the second hollow rotating platform is electrically connected to the second motor.

[0009] Preferably, a connecting flange is welded to the outer periphery of the lower edge of the trumpet-shaped structure of the material receiving hopper, and the connecting flange is fixedly connected to the upper surface of the first hollow rotating platform by a first bolt.

[0010] Preferably, a chain plate line is fixedly installed on the side of the frame in the length direction, one end of the chain plate line away from the frame is higher than the other end close to the frame, and the end of the chain plate line close to the frame is located directly above the material receiving hopper.

[0011] Preferably, the first hollow rotating platform is electrically connected to the first motor, and the control mechanism adopts a PLC-based logic control system.

[0012] In the aforementioned material collecting method of the rotary angle steel surplus material collecting device, the end of the transposition base located directly below the material receiving hopper is called the material receiving hopper end, and the end of the transposition base away from the material receiving hopper is called the material receiving and placing receiving bin end; the material receiving bin is placed and replaced according to the placement of the receiving bin end and the receiving bin end; The status values ​​of the material receiving bin include: an empty bin value, a not full bin value and a full bin value. The real-time status value of the material receiving bin is detected by the first weighing sensor and the second weighing sensor, and whether there is a material receiving bin on the first pallet and the second pallet is detected by the first weighing sensor and the second weighing sensor. According to the real-time status value of the material receiving bin and whether there is a material receiving bin on the first pallet and the second pallet, the material receiving bin is placed and replaced.

[0013] Preferably, the control mechanism determines which of the first and second support plates is located at the material receiving hopper end according to the forward or reverse rotation of the second motor.

[0014] Beneficial effects of the present invention: 1. The present invention adopts a hollow rotating platform and a receiving hopper with two material distribution ports. After receiving the material, the receiving hopper can rotate at a uniform speed to disperse and throw the remaining angle steel from the two material distribution ports downward and around, and the remaining angle steel falls into the receiving bin, thereby solving the problem that the remaining angle steel is piled up at the material drop position in the receiving bin and is difficult to disperse. 2. The present invention sets a rotary transposition mechanism to use a weighing sensor to judge the material receiving situation of the material receiving bin. When the set value is reached, the rotary transposition mechanism will transpose the material receiving bin, thereby realizing convenient replacement of the material receiving bin, saving time for replacing the material receiving bin, and ensuring the work efficiency of material receiving. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the three-dimensional structure of the rotary angle steel surplus material collecting device according to the first embodiment of the present invention; Figure 2 It is an exploded view of the material receiving hopper and the hollow rotating disk of the first embodiment of the present invention; Figure 3 It is a three-dimensional diagram of the material receiving hopper according to the first embodiment of the present invention; Figure 4 It is a full cross-sectional view of the material receiving hopper according to the first embodiment of the present invention; Figure 5 for Figure 1 A partial enlarged view of point B in the middle; Figure 6 Schematic diagram of the structure of the rotation transposition mechanism of the first embodiment of the present invention; Figure 7 It is a partial cross-sectional view of the rotation transposition mechanism of the first embodiment of the present invention; In the figure, 1 is the chain plate line, 2 is the angle steel surplus material, 3 is the material receiving hopper, 4 is the first hollow rotating platform, 5 is the frame, 6 is the material receiving bin, 7 is the first support plate, 8 is the transposition base, 9 is the travel switch, 10 is the first weighing sensor, 11 is the second motor, 12 is the first motor, 13 is the first in-place detection column, 14 is the second bolt, 15 is the connecting flange, 16 is the first dispensing port, 17 is the second dispensing port, 18 is the second hollow rotating platform, 19 is the second support plate, 20 is the second weighing sensor, 21 is the second in-place detection column, 22 is the limit eaves, and 23 is the support leg plate. DETAILED DESCRIPTION

[0016] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Embodiment 1

[0017] like Figure 1 As shown, a rotary angle steel surplus material collecting device includes a frame 5 fixedly mounted on the ground, and the frame 5 can also be fixedly mounted on a material dividing work surface of a rectangular plate structure placed on the ground. The frame 5 is a frame structure composed of vertical support legs, a lower horizontal connecting beam and an upper horizontal support beam. The vertical support legs, the lower horizontal connecting beam and the upper horizontal support beam are made of rectangular steel pipes, and the connection between the vertical support legs, the lower horizontal connecting beam and the upper horizontal support beam is welding. The first hollow rotating platform 4 is installed at the center position of the upper horizontal support beam, the material receiving hopper 3 is fixedly installed above the first hollow rotating platform 4, and a pair of material collecting bins 6 are installed on the rotating transposition mechanism, and the rotating transposition mechanism is placed on the ground. The rotating transposition mechanism can also be placed on the material dividing work surface located on the ground, and one of the material collecting bins 6 is located directly below the first hollow rotating platform 4. An inclined chain plate line 1 is fixedly installed on the rear side of the length direction of the upper horizontal support beam through a support frame, and one end of the chain plate line 1 away from the frame 5 is higher than the other end close to the frame 5. The end of the chain plate line 1 close to the frame 5 is located directly above the material receiving hopper 3, and the residual angle steel 2 falls from the chain plate line 1 into the material receiving hopper 3.

[0018] like Figure 1 , 2As shown in Figures 3 and 4, the main body of the receiving hopper 3 is a cylindrical structure, and the upper port of the receiving hopper 3 is a trumpet-shaped structure that is wide at the top and narrow at the bottom. The trumpet-shaped structure at the upper end facilitates the angle steel residue 2 to fall smoothly into the receiving hopper 3. A first material distribution opening 16 is welded on one side of the central axis of the lower port of the receiving hopper 3, and the first material distribution opening 16 is an oblique cylindrical structure that is inclined from the center to the outside and downward; a second material distribution opening 17 is on the other side of the central axis of the lower port of the receiving hopper 3, and the second material distribution opening 17 is vertically downward.

[0019] A connection flange 15 is welded to the outer periphery of the lower edge of the trumpet-shaped structure of the receiving hopper 3, and the connection flange 15 is fixedly connected to the upper surface of the first hollow rotating platform 4 by a first bolt. The first hollow rotating platform 4 is electrically connected to the first motor 12, and the first motor 12 controls the rotation of the first hollow rotating platform 4, and the receiving hopper 3 rotates synchronously with the first hollow rotating platform 4. The first hollow rotating platform 4, the first motor 12, and the rotation control method are all prior art.

[0020] like Figure 1 , 5 As shown in Figures 6 and 7, the rotation transposition mechanism includes a second hollow rotating platform 18, which is electrically connected to a second motor 11. A transposition base 8 of a rectangular plate structure is centrally fixed above the second hollow rotating platform 18 by a third bolt. The second hollow rotating platform 18 is controlled to rotate by the second motor 11, and the transposition base 8 rotates synchronously with the second hollow rotating platform 18. The second hollow rotating platform 18, the first motor 11, and the rotation control method are all prior art. .

[0021] A pair of material receiving bins 6 are fixedly installed in the length direction of the transposition base 8. When the transposition base 8 is rotated and transposed, it can ensure that one of the material receiving bins 6 is located directly below the receiving hopper 3. The pair of material receiving bins 6 are placed on the first support plate 7 and the second support plate 19 respectively. The bottom sides of the material receiving bins 6 are fixedly installed with support leg plates 23 of a certain height by bonding or bolting. The support leg plates 23 can facilitate the AGV forklift to fork the full material receiving bin 6, and after placing the empty material receiving bin 6 on the first support plate 7 and the second support plate 19, it can ensure that the AGV forklift can exit smoothly. The size of the first support plate 7 and the second support plate 19 is roughly equal to the bottom surface of the material receiving bin 6. The first support plate 7 and the second support plate 19 are integrally formed with a limiting eave 22 at the four peripheral edges. The position of the limiting eave 22 matches the leg plate 23. The leg plate 23 is placed on the first support plate 7 and the second support plate 19, and the leg plate 23 is close to the limiting eave 22 and is reliably limited by the limiting eave 22, so that the material receiving bin 6 can be stably placed on the first support plate 7 and the second support plate 19, and the material receiving bin 6 is ensured not to shift when the transposition base 8 rotates. The height of the limiting eave 22 is less than the height of the leg plate 23, and the gap between the limiting eave 22 and the leg plate 23 is ensured to be able to smoothly pass through the fork of the AGV forklift. Of course, limiting protrusions can also be bonded to the four peripheral edges of the first support plate 7 and the second support plate 19, and the limiting protrusions can be used to ensure that the material receiving bin 6 can be stably placed on the first support plate 7 and the second support plate 19.

[0022] The first and second weighing sensors 10 and 20 are respectively disposed at the four corners of the bottom lower surfaces of the first and second weighing sensors 7 and 19 , and the legs of the first and second weighing sensors 10 and 20 are fixedly connected to the upper surface of the transposition base 8 .

[0023] The first in-place detection column 13 and the second in-place detection column 21 are respectively fixedly installed at the middle positions of the two ends of the lower surface in the length direction of the transposition base 8, and the travel switch 9 is limitedly matched with the first in-place detection column 13 and the second in-place detection column 21. The bottom end of the travel switch 9 is fixedly installed on the ground by the second bolt 14, and the bottom end of the travel switch 9 can also be fixedly installed on the material distribution work surface of the rectangular plate structure placed on the ground by the second bolt 14. The first in-place detection column 13 or the second in-place detection column 21 touches the travel switch 9 to detect whether the transposition of the receiving bin 6 is in place, and the control mechanism switches the circuit of the second motor 11 to complete forward or reverse rotation according to the transposition in-place signal, so as to ensure that the first support plate 7 or the second support plate 19 is just below the receiving hopper 3.

[0024] It also includes a control mechanism, which adopts a PLC-based logic control system. The control mechanism is electrically connected to the chain plate line 1, the first hollow rotating platform 4 (first motor 12), the second hollow rotating platform 18 (second motor 11), the travel switch 9, the first weighing sensor 10 and the second weighing sensor 20 through data lines. The control mechanism controls the actions of the first hollow rotating platform 4 (first motor 12), the second hollow rotating platform 18 (second motor 11) and the chain plate line 1 through PNP technology; the first weighing sensor 10, the second weighing sensor 20 and the travel switch 9 realize data interaction with the control mechanism through I / O signals. Embodiment 2

[0025] The second embodiment is a material collecting method of the rotary angle steel surplus material collecting device described in the first embodiment, comprising the following steps: For the convenience of description, in the second embodiment, the end of the transposition base 8 located directly below the material receiving hopper 3 is called the material receiving hopper end, and the end of the transposition base 8 away from the material receiving hopper 3 is called the material receiving and placing bin end; S1. Place and replace the material receiving bin 6 according to the placement of the material receiving hopper end and the material receiving bin end: If there is no receiving bin 6 on the pallets corresponding to the receiving hopper end and the receiving bin end: place an empty receiving bin 6 or a partially full receiving bin 6 on the corresponding pallet at the receiving bin end by the AGV forklift, and then execute step S2; If the receiving bin 6 at the receiving hopper end is an empty bin 6 or a partially full bin 6, and there is no bin on the corresponding pallet at the receiving bin end: place the empty bin 6 or the partially full bin 6 on the corresponding pallet at the receiving bin end by the AGV forklift, and then execute step S5; If the receiving bin 6 at the receiving hopper end is an empty receiving bin 6 or a not full receiving bin 6, and a full receiving bin 6 is placed on the corresponding pallet at the receiving bin end: the full receiving bin 6 placed on the corresponding pallet at the receiving bin end needs to be transported away by the AGV forklift, and then an empty receiving bin 6 or a not full receiving bin 6 is placed on the corresponding pallet at the receiving bin end, and then step S5 is executed; If the receiving bin 6 at the receiving hopper end is a full receiving bin 6, and the receiving bin 6 on the corresponding pallet at the receiving bin end is an empty receiving bin 6 or a not full receiving bin 6: directly execute step S7; S2, the weighing sensor at the receiving and placing material receiving bin end detects that an empty material receiving bin 6 or an underfilled material receiving bin 6 is placed on the corresponding pallet, and the weighing sensor at the receiving hopper end detects that there is no material receiving bin 6 on the corresponding pallet, and the weighing signals of the two weighing sensors are simultaneously transmitted to the control mechanism, which receives the weighing signals and controls the second motor 11 to drive the second hollow rotating platform 18 to rotate to perform the transposition of the transposition base 8; S3, the control mechanism controls the second motor 11 to rotate forward according to the last trigger record of the travel switch 9, and the second motor 11 rotates to make the second hollow rotating platform 18 drive the transposition base 8 to rotate 180 degrees, and the in-place detection column at the material receiving hopper end is separated from the travel switch 9, until the in-place detection column at the material receiving and placing bin end contacts the travel switch 9, and the in-place signal of the travel switch 9 is transmitted to the control mechanism, and the control mechanism switches the circuit of the second motor 11 to reverse and stops rotating; S4, the AGV forklift places an empty material receiving bin 6 or a partially full material receiving bin 6 on the corresponding pallet at the receiving bin receiving and placing end; S5, the control mechanism controls the chain plate line 1 to start working, the chain plate line 1 transmits the working signal to the control mechanism, the control mechanism controls the first motor 12 to start rotating, the first motor 12 drives the first hollow rotating platform 4 to rotate, so that the receiving hopper 3 rotates, and under the action of centrifugal force, the angle steel residue falls from the unloading end of the chain plate line 1 through the first distribution port 16 and the second distribution port 17 of the receiving hopper 3 to the surrounding and center of the receiving bin 6 below the receiving hopper 3, so that the angle steel residue falls evenly into the receiving bin 6; the corresponding weighing sensor detects the weight of the receiving bin 6 on the pallet in real time, and obtains the state value of the receiving bin 6 below the receiving hopper 3 in real time. During the normal operation of the chain plate line 1 and the collection of the angle steel residue, the real-time state value of the receiving bin 6 below the receiving hopper 3 is: empty bin value < real-time state value < full bin value; S6, after the weighing sensor at the receiving hopper end detects that the corresponding receiving bin 6 on the pallet is full (state value = full bin value), the full bin signal is transmitted to the control mechanism, and the control mechanism receives the full bin signal. The control mechanism controls the transposition base 8 to transpose by judging the last trigger record of the travel switch 9, and transposes the full receiving bin 6 to the receiving and placing receiving bin end, and the empty receiving bin 6 or the underfull receiving bin 6 is transposed to the receiving hopper end to start receiving materials. At the same time, the full receiving bin 6 is replaced by the empty receiving bin 6 or the underfull receiving bin 6 by the AGV forklift, and waits for the next transposition; S7, repeat steps S5-S6; when there is no angle steel left on the chain plate line 1, press the stop button of the control mechanism, and the rotary angle steel leftover material collecting device stops running.

[0026] The control mechanism detects the state of the material receiving bin 6 on the pallet through the first weighing sensor 10 and the second weighing sensor 20. The state value of the material receiving bin 6 includes: an empty bin value, a not full bin value, and a full bin value, so as to control the operation of the rotary angle steel surplus material receiving device according to the state value of the material receiving bin 6; at the same time, it can also detect whether there is a bin or no bin on the corresponding pallet through the first weighing sensor 10 and the second weighing sensor 20.

[0027] In addition, the control mechanism determines which of the first support plate 7 and the second support plate 19 is at the material receiving hopper end according to the forward or reverse rotation of the second motor 11, for example: 1. When the second in-position detection column 21 contacts the travel switch 9, the control mechanism starts the chain plate line 1 and switches the circuit of the second motor 11 to forward rotation. The second motor 11 transmits a signal to the control mechanism. The control mechanism receives the signal that the second motor 11 switches to forward rotation and determines that the first support plate 7 is at the material receiving hopper end at this time; 2. When the first in-position detection column 13 contacts the travel switch 9, the control mechanism starts the chain plate line 1 and switches the circuit of the second motor 11 to reverse. The second motor 11 transmits a signal to the control mechanism. The control mechanism receives the signal that the second motor 11 switches to reverse and determines that the second support plate 19 is at the material receiving hopper end at this time.

[0028] Conditions for transposition of receiving bin 6: Pick and place storage bin Hopper end Whether to perform transposition Empty & Not Full No warehouse transposition Empty & Not Full Full warehouse transposition No warehouse Full warehouse No change of position and chain plate line stop, waiting for conditions to be met Full warehouse Full warehouse No change of position and chain plate line stop, waiting for conditions to be met Empty position & Not fully loaded & No position & Full position Empty & Not Full No position change or chain plate line work, waiting for conditions to be met In the embodiments of the present invention, technical features that are not described in detail are all existing technologies or conventional technical means and will not be described in detail here.

[0029] Finally, it should be noted that the above embodiments are only specific implementation methods of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them, and the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that any technician familiar with the technical field can modify the technical solutions recorded in the above embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be covered within the protection scope of the present invention.

Claims

1. A rotary angle steel excess material collecting device, comprising a frame (5), characterized in that: A first hollow rotating platform (4) is installed at the center of the upper part of the frame (5); a material receiving hopper (3) passes through the center of the first hollow rotating platform (4) and is installed on the first hollow rotating platform (4); the middle body of the material receiving hopper (3) is a cylindrical structure; the upper port of the material receiving hopper (3) is a trumpet-shaped structure that is wide at the top and narrow at the bottom; a first material distribution port (16) is welded on one side of the center axis of the lower port of the material receiving hopper (3); the first material distribution port (16) is an oblique cylindrical structure that is inclined from the center to the outside and downward; the other side of the center axis of the lower port of the material receiving hopper (3) is welded on the other side of the center axis of the lower port of the material receiving hopper (3). The side is a second material distribution opening (17), the second material distribution opening (17) is vertically downward, the trumpet-shaped structure is located above the first hollow rotating platform (4), and the first material distribution opening (16) and the second material distribution opening (17) are located below the first hollow rotating platform (4); a pair of material receiving bins (6) are installed on the rotating transposition mechanism, and one of the material receiving bins (6) is located directly below the first material distribution opening (16) and the second material distribution opening (17) after transposition; and a control mechanism is also included, and the control mechanism is electrically connected to the first hollow rotating platform (4) and the rotating transposition mechanism respectively to realize data exchange.

2. The rotary angle steel surplus material collecting device according to claim 1 is characterized in that: The rotary transposition mechanism comprises a second hollow rotary platform (18), a transposition base (8) of a rectangular plate structure is centrally mounted above the second hollow rotary platform (18), a pair of material receiving bins (6) are fixedly mounted in the length direction of the transposition base (8), a first in-place detection column (13) and a second in-place detection column (21) are respectively mounted in the middle positions of both ends of the lower surface of the transposition base (8) in the length direction, a travel switch (9) cooperates with the first in-place detection column (13) and the second in-place detection column (21), and the bottom end of the travel switch (9) is fixedly mounted on the ground or on a material distribution work surface.

3. The rotary angle steel surplus material collecting device according to claim 2 is characterized in that: A pair of material receiving bins (6) are respectively placed on a first support plate (7) and a second support plate (19); first weighing sensors (10) are arranged at four corners of the lower surface of the first support plate (7); second weighing sensors (20) are arranged at four corners of the lower surface of the second support plate (19); and legs of the first weighing sensor (10) and the second weighing sensor (20) are fixedly connected to the upper surface of the transposition base (8).

4. The rotary angle steel surplus material collecting device according to claim 3 is characterized in that: A leg plate (23) is fixedly mounted at the bottom of the material receiving bin (6), and limiting eaves (22) are integrally formed at the four peripheral edges of the first support plate (7) and the second support plate (19), or limiting protrusions are bonded to the four peripheral edges of the first support plate (7) and the second support plate (19), and the limiting eaves (22) or the limiting protrusions cooperate with the leg plate (23).

5. The rotary angle steel surplus material collecting device according to claim 4 is characterized in that: The second hollow rotating platform (18) is electrically connected to the second motor (11).

6. The rotary angle steel surplus material collecting device according to claim 1, characterized in that: A connecting flange (15) is welded to the outer periphery of the lower edge of the trumpet-shaped structure of the material receiving hopper (3), and the connecting flange (15) is fixedly connected to the upper surface of the first hollow rotating platform (4) by means of a first bolt.

7. The rotary angle steel surplus material collecting device according to claim 1, characterized in that: A chain plate line (1) is fixedly installed on the side of the frame (5) in the length direction, and one end of the chain plate line (1) away from the frame (5) is higher than the other end close to the frame (5), and the end of the chain plate line (1) close to the frame (5) is located directly above the material receiving hopper (3).

8. The rotary angle steel surplus material collecting device according to claim 1, characterized in that: The first hollow rotating platform (4) is electrically connected to a first motor (12), and the control mechanism adopts a PLC-based logic control system.

9. A material collecting method for a rotary angle steel surplus material collecting device as claimed in claim 5, characterized in that: The end of the transposition base (8) located directly below the material receiving hopper (3) is called the material receiving hopper end, and the end of the transposition base (8) away from the material receiving hopper (3) is called the material receiving and placing receiving bin end; the material receiving bin (6) is placed and replaced according to the placement conditions of the material receiving hopper end and the material receiving and placing receiving bin end; The state value of the material receiving bin (6) includes: an empty bin value, a not full bin value and a full bin value. The real-time state value of the material receiving bin (6) is detected by a first weighing sensor (10) and a second weighing sensor (20), and whether there is a material receiving bin (6) on the first pallet (7) and the second pallet (19) is detected by the first weighing sensor (10) and the second weighing sensor (20). The material receiving bin (6) is placed and replaced according to the real-time state value of the material receiving bin (6) and whether there is a material receiving bin (6) on the first pallet (7) and the second pallet (19).

10. A material collecting method for a rotary angle steel surplus material collecting device according to claim 9, characterized in that: The control mechanism determines which of the first support plate (7) and the second support plate (19) is located at the material receiving hopper end according to the forward or reverse rotation of the second motor (11).

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