Heavy plate feeder

Abstract

The invention relates to a heavy plate feeder, and belongs to the technical field of feeding equipment. Comprising a driving shaft (101), a rack (5), a chain plate (2), a chain track (3) and a supporting roller (4), the driving shaft (101) is rotationally arranged at the front end of the rack (5), the supporting roller (4) is rotationally arranged at the upper end of the rack (5) through bearing seats (12) at the two ends, supporting chain wheels (14) are arranged in the middle of the driving shaft (101) and the middle of the supporting roller (4), and a driving wheel (102) is arranged on the driving shaft (101); and a thrust wheel (13) is arranged on the supporting roller (4). According to the device, stable operation of the chain plate (2) is guaranteed through the supporting roller (4) and the supporting chain wheel (14) on the driving shaft (101), deviation of the chain track (3) is avoided in combination with the driving wheel (102) and the thrust wheel (13), and the service life of equipment is prolonged. The problems that due to the fact that existing thrust wheels and supports are densely arranged, fine ore accumulation is easily caused, equipment abrasion is caused, and the operation cost is increased are solved.

Description

Technical Field

[0001] This invention relates to a heavy-duty plate feeder, belonging to the technical field of ore feeding equipment. Background Technology

[0002] There are two heavy-duty plate feeders (ZBS2300 / 10000) in the crushing area. Their structure mainly includes a head drive assembly (containing a motor, reducer, and drive shaft assembly), a frame, a running mechanism (consisting of upper support rollers, lower support rollers, chain tracks, chain plates, and a load-bearing mechanism), and a tail tensioning device. The motor and reducer work together to drive the toothed drive wheel. Through the meshing of the chain track (OK ring) with the drive wheel, and the interaction of the tensioning shaft assembly, the running mechanism rotates. This process pulls the chain plate assembly loaded with ore forward. The chain plates, support rollers, 200mm I-beams, and 160mm channel steel components in the running mechanism jointly bear the weight of the material and the running components. The frame bears the weight of the entire machine and possesses sufficient strength and rigidity. The chain plates (riveted and welded components) are located above the support roller assembly consisting of two side support rollers and one middle support roller, primarily responsible for bearing the weight from the chain plates and the ore. The material falls from the crushing chamber located in the upper middle part into the conveyor bin of the heavy-duty plate feeder. As the chain plate moves, the material moves forward to the discharge port at the head and is discharged.

[0003] With changes in mining technology, the particle size of incoming ore has changed from 0-1000mm to 0-350mm, increasing the content of fine ore. The ore with the highest fine ore content reaches the heavy-duty plate feeder after being crushed by a gyratory crusher. Since the implementation of the dry fog dust removal system for the coarse crusher, the moisture content of the conveyed ore has also increased. Furthermore, the dense arrangement of the support rollers and their supports makes it easy for fine ore to adhere and accumulate on these components, accelerating wear on the support rollers, chains, and drive wheels. This leads to frequent equipment misalignment and rust on the supports. The existing track roller assembly suffers from corrosion and deformation, including deformation or breakage of the chain plates and tracks. Furthermore, the structure is complex and contains numerous spare parts: 63 upper track rollers, 126 supports, and 126 track roller seats; and 22 lower track rollers, 44 supports, and 44 track roller seats. The grid-like track roller supports easily accumulate hard ore, causing the middle track rollers to become buried (or jammed). This results in numerous failure points, a high failure rate, long maintenance times, high labor intensity, and significant impact on production, while also increasing operating costs and the probability of accidents. To reduce investment, minimize production impact, and reduce equipment failures, the transmission structure of the heavy-duty plate feeder in the crushing system will be optimized. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that the existing support rollers and support roller supports are densely arranged, which easily causes the accumulation of fine ore, aggravates equipment wear, and increases operating costs and accident rate.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a heavy-duty plate feeder, including a drive assembly, a frame, chain plates and chain tracks, and also including spaced support rollers. The drive assembly includes a drive shaft, which is rotatably mounted at the front end of the frame. The support rollers are provided with bearing seats at both ends, and the support rollers are rotatably mounted on the upper end of the frame through the bearing seats. A chain roller that abuts against the chain plate is spaced apart between the drive shaft and the support rollers. A drive wheel that meshes with the chain track is provided on the drive shaft, and the drive wheel is located outside the chain roller. A support roller that fits against the chain track is provided on the support roller, and the support roller is located between the bearing seat A and the chain roller.

[0006] The device also includes a chain roller, which has bearing seats at both ends and chain wheels that abut against the chain plate at intervals in the middle. The chain roller is located below the gap between two adjacent support rollers and is rotatably connected to the frame through the bearing seats.

[0007] In the aforementioned device, one end of the drive shaft is connected to a rotating drive component, and both ends of the drive shaft are provided with bearing seats. The drive shaft is rotatably mounted at the front end of the frame via the bearing seats.

[0008] In the aforementioned device, the drive wheel has a gear-like structure, and the tooth thickness is 0.8 to 1 times the width of the track opening, and the tooth groove depth is equal to or greater than the radius of the track shaft.

[0009] The frame of the aforementioned device includes two main beams arranged opposite each other, and the cross-section of the main beams is I-shaped, with a height of 700mm to 750mm.

[0010] Furthermore, in the above-mentioned device, through holes are provided at intervals on the lower part of the two side walls of the main beam, the two ends of the chain roller pass through the frame, and the bearing seat is located at the lower part of the main beam.

[0011] In the aforementioned device, the chain plate is provided with reinforcing ribs at both ends, a reinforcing web plate at the lower end, and a reinforcing rib plate in the middle.

[0012] Furthermore, in the above-mentioned device, both the support roller and the chain roller are solid rod-shaped structures, and the chain wheel is annular and is respectively sleeved on the drive shaft, the support roller, and the chain roller.

[0013] In the aforementioned device, the support roller has a circular structure, and the outer edge sidewall of the middle extends outward to form a limiting part. The diameter of the limiting part is greater than the diameters on both sides, and the width of the limiting part is equal to or less than the width of the track opening.

[0014] Furthermore, the drive wheel and support wheel in the above device are made of high-strength alloy steel 42CrMo, the track is made of high-strength alloy steel Q460, and the support roller, idler wheel and idler roller are made of high-strength alloy steel 35CrMo.

[0015] The beneficial effects of this invention are as follows: This structure replaces the traditional support roller assembly with support rollers, preventing the adsorption and accumulation of ore powder, reducing jamming problems, and lowering maintenance difficulty. Simultaneously, the main shaft device is upgraded to ensure smooth chain belt operation and prevent deviation. The chain plate assembly is reinforced to improve structural stability and impact resistance. Furthermore, the frame height is increased, and the structural design is optimized to enhance impact resistance and wear resistance. Since the modification of this device, the adsorption and accumulation of ore powder, spare parts wear, and equipment deviation have been greatly improved. It has been in normal use for over a year. This device is easy to install, reduces spare parts consumption and equipment failure, lowers labor intensity and production costs, and is expected to extend the equipment's service life by more than two years, thus reducing operating costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention.

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the middle section of the present invention.

[0018] Figure 3 This is a schematic diagram of the drive shaft structure of the present invention.

[0019] Figure 4 This is a schematic diagram of the support roller of the present invention.

[0020] Figure 5 This is a schematic diagram of the structure of the chain roller of the present invention.

[0021] Figure 6 This is a schematic diagram of the drive wheel structure of the present invention.

[0022] Figure 7 This is a schematic diagram of the original equipment structure.

[0023] The diagram is labeled as follows: 1 is the drive assembly, 101 is the drive shaft, 102 is the drive wheel, 2 is the chain plate, 21 is the reinforcing rib plate, 22 is the reinforcing web plate, 23 is the reinforcing rib plate, 3 is the chain track, 31 is the chain track shaft, 4 is the support roller, 5 is the frame, 6 is the chain roller, 7 is the tensioning shaft device, 8 is the original center support roller, 9 is the original side support roller, 10 is the bracket, 11 is the original chain roller, 12 is the bearing seat, 13 is the support roller, and 14 is the chain roller. Detailed Implementation

[0024] The invention will be further described below with reference to the accompanying drawings.

[0025] like Figures 1 to 7The heavy-duty plate feeder of the present invention includes a drive assembly 1, a frame 5, a chain plate 2 and a chain track 3, and also includes support rollers 4 spaced apart. The drive assembly 1 includes a drive shaft 101, which is rotatably disposed at the front end of the frame 5. The support rollers 4 are provided with bearing seats 12 at both ends and are rotatably disposed on the upper end of the frame 5 through the bearing seats 12. A chain roller 14 that abuts against the chain plate 2 is spaced apart between the drive shaft 101 and the support rollers 4. A drive wheel 102 that meshes with the chain track 3 is provided on the drive shaft 101 and is located outside the chain roller 14. A support roller 13 that fits against the chain track 3 is provided on the support roller 4 and is located between the bearing seat 12 and the chain roller 14. Those skilled in the art will understand that this device replaces the original two outer support rollers 9 and one middle support roller 8 with support rollers 4. The support rollers 4 are rotatably mounted on the upper end of the frame 5 via bearing seats 12. Support rollers 13, which are in contact with the chain track 3, are mounted on the support rollers 4. The support rollers 13 support the chain plate 2 and the material, while simultaneously preventing deviation due to their contact with the chain track 3. The support rollers 13 guide the chain track 3, support the chain wheel 14 to support the chain plate 2 and the material, reduce sagging, and decrease resistance as they rotate with the support rollers 4. This completely solves the problem of the middle support roller 13 jamming and effectively addresses the issue of a sharp increase in chain belt running resistance. In practice, 16 sets of support rollers 4 can replace 105 sets of the original support rollers and their supports, preventing the adsorption and accumulation of powdered ore. Meanwhile, a chain roller 14 is provided at intervals between the drive shaft 101 and the support roller 4 to abut against the chain plate 2. This ensures that the chain belt composed of the chain plate 2 and the chain track 3 can be relatively fixed on the chain roller 14 of the drive shaft 101 and the support roller 4 under the action of the drive wheel 102 and the chain track 3 being fully engaged. This design enables the chain belt to run smoothly on the center line of the drive shaft 101, effectively preventing the occurrence of deviation in heavy plate feeders.

[0026] Preferably, the above-mentioned device further includes a chain roller 6, which has bearing seats 12 at both ends and a chain wheel 14 at a distance in the middle that abuts against the chain plate 2. The chain roller 6 is located below the gap between two adjacent support rollers 4 and is rotatably connected to the frame 5 through the bearing seats 12. Those skilled in the art will understand that, in order to facilitate the support of the lower end of the chain plate 2, this device preferably modifies the original left and right chain wheels 11 into chain rollers 6, with a chain wheel 14 at a distance in the middle that abuts against the chain plate 2. The chain wheel 14 supports the chain plate 2 and the chain track 3, reducing the sagging of the chain plate 2, while conforming to the chain track 3 to prevent deviation. It is rotatably connected to the frame 5 through the bearing seats 12, reducing resistance as the chain roller 6 rotates, thus preventing the chain (composed of the chain plate 2 and the chain track 3) from being dragged, thereby reducing the resistance during chain operation. In practice, 10 sets of chain rollers 6 can replace the original 26 sets of φ180*200mm chain wheels, preventing the adsorption and accumulation of powder ore. At the same time, by further positioning the chain rollers 6 below the gap between two adjacent support rollers 4, dust accumulation is further reduced.

[0027] Preferably, in the above-mentioned device, one end of the drive shaft 101 is connected to a rotating drive component, and both ends of the drive shaft 101 are provided with bearing seats 12. The drive shaft 101 is rotatably mounted at the front end of the frame 5 through the bearing seats 12. Those skilled in the art will understand that since the drive shaft 101 rotates during operation, one end of the drive shaft 101 is connected to a rotating drive component. The rotating drive component is actually a motor with a speed reducer, which transmits power to the drive shaft 101 through the speed reducer. Since the heavy-duty plate feeder operates intermittently, the speed reducer torque bar connecting pin is welded on-site. The torque required by the speed reducer motor reaches its maximum value at the moment of startup. To meet the high torque requirement at startup, the center of the torque bar can be further lengthened from 756mm to 925mm. This arrangement also avoids the installation position of the bearing seat 12 of the carrier wheel 14. For ease of fixing the drive shaft 101, it is preferable to provide bearing seats 12 at both ends of the drive shaft 101, and the drive shaft 101 is rotatably mounted at the front end of the frame 5 through the bearing seats 12.

[0028] Preferably, the drive wheel 102 in the above-mentioned device has a gear-like structure, and the tooth thickness is 0.8 to 1 times the width of the opening of the track 3, and the tooth groove depth is greater than or equal to the radius of the track shaft 31. Those skilled in the art will understand that, since the drive wheel 102 will actually mesh with the track 3, in order to ensure meshing stability and prevent slippage that could cause equipment deviation, the contact surface between the track shaft 31 and the tooth groove of the drive wheel 102 is increased. This device preferably uses a gear-like structure for the drive wheel 102, and the tooth thickness is 0.8 to 1 times the width of the opening of the track 3, that is, the tooth thickness should be adapted to the width of the opening of the track 3, specifically 0.8 to 1 times the width of the opening of the track 3, and preferably equal to the width of the opening of the track 3, which is also the length of the middle track shaft 31. The tooth groove depth is greater than or equal to the radius of the track shaft 31 to ensure that the drive wheel 102 is effectively engaged on the track shaft 31. Preferably, the tooth thickness is increased by 20 mm, and the tooth groove depth is increased from 40 mm to 60 mm.

[0029] Preferably, the frame 5 in the above-mentioned device includes two main beams arranged opposite each other, and the main beams have an I-shaped cross-section and a height of 700mm to 750mm. Those skilled in the art will understand that the preferred arrangement of the frame 5 with two main beams arranged opposite each other, and preferably with an I-shaped cross-section, increases the support strength. For ease of installation, it is preferable that each side of the main beam consists of two sections connected by six bolts, i.e., two sections of the main beam are connected by six bolts to form a single-side main beam. The preferred height of the main beam is 700mm to 750mm, with an actual preferred height of 720mm. This structural design increases the horizontal height of the original support 10, preventing dust accumulation and allowing the ore powder to fall directly into the ore powder drain, preventing the drive assembly 1, chain plate 2, chain track 3, support roller 4, main beam, chain roller 6, tensioning shaft device 7, etc., from adsorbing and accumulating ore powder.

[0030] Preferably, in the above-mentioned device, through holes are provided at intervals on the lower part of the side walls of the main beam, the two ends of the chain roller 6 pass through the frame 5, and the bearing seats 12 are located at the lower part of the main beam. Those skilled in the art will understand that, to facilitate the installation of the chain roller 6, this device provides through holes at intervals on the lower part of the side walls of the main beam, so that the two ends of the chain roller 6 actually pass through the frame 5, and the bearing seats 12 are located at the lower part of the main beam. Mounting holes with a diameter of Φ26mm can be pre-drilled in the lower part of the main beam to install the bearing seats 12 at both ends of the chain roller 6, with four holes drilled for each bearing seat 12. The longitudinal hole spacing of the bearing seats 12 is 140mm, and the transverse hole spacing is 130mm.

[0031] Preferably, in the above-mentioned device, the chain plate 2 is provided with reinforcing ribs 21 at both ends, a reinforcing web plate 22 at the lower end, and a reinforcing rib plate 23 in the middle. Those skilled in the art will understand that, in order to increase the structural strength of the chain plate 2, this device specifically adds reinforcing ribs 21 at both ends above the chain plate 2; adds three reinforcing rib plates 23 on each side below the chain plate 2 to improve the overall structural stability and impact resistance of the chain plate 2; and simultaneously provides a reinforcing web plate 22 at the lower end of the chain plate 2 to enhance the wear resistance between the chain plate 2 and the support roller 13 or the solid drag chain roller track.

[0032] Preferably, in the above-described device, both the support roller 4 and the chain roller 6 are solid rod-shaped structures, and the chain roller 14 is annular and respectively sleeved on the drive shaft 101, the support roller 4, and the chain roller 6. Those skilled in the art will understand that, in order to increase the structural strength of the components, this device preferably uses both the support roller 4 and the chain roller 6 as solid rod-shaped structures, and the chain roller 14 is annular and respectively sleeved on the drive shaft 101, the support roller 4, and the chain roller 6; in practice, it can be fixed by welding or machined into a single piece.

[0033] Preferably, the support roller 13 in the above-mentioned device has a circular ring structure, and the outer edge sidewall of the middle extends outward to form a limiting part. The diameter of the limiting part is larger than the diameters of the two sides, and the width of the limiting part is equal to or smaller than the opening width of the track 3. Those skilled in the art will understand that, to avoid deviation, this device preferably uses a circular ring structure for the support roller 13, with the outer edge sidewall of the middle extending outward to form a limiting part. The diameter of the limiting part is larger than the diameters of the two sides, and the width of the limiting part is equal to or smaller than the opening width of the track 3. In practice, the limiting part of the support roller 13 is directly placed within the opening of the track 3, i.e., the recess where the rotating shaft is located, to guide the track 3 and prevent deviation.

[0034] Preferably, in the above-mentioned device, the drive wheel 102 and support wheel 13 are made of high-strength alloy steel 42CrMo, the track 3 is made of high-strength alloy steel Q460, and the support roller 4, idler wheel 14, and idler roller 6 are made of high-strength alloy steel 35CrMo. Those skilled in the art will understand that, in order to extend the equipment's lifespan and improve wear resistance, this device preferably uses high-strength alloy steel 42CrMo for the drive wheel 102 and support wheel 13, and high-strength alloy steel Q460 for the track 3. Further preferably, the bolts connecting the chain plate 2 and the track 3 can be replaced with high-strength self-locking bolts to prevent the track 3 from elongating and the chain plate 2 from loosening. The support roller 4, idler wheel 14, and idler roller 6 are made of high-strength alloy steel 35CrMo.

Claims

1. Heavy-duty apron feeder comprising a drive assembly (1), a frame (5), a chain flight (2) and a chain track (3), characterized in that: The supporting roller (4) is arranged at intervals, the driving assembly (1) comprises a driving shaft (101), the driving shaft (101) is rotatably arranged at the front end of the rack (5), the supporting roller (4) is rotatably arranged at the upper end of the rack (5) through the bearing seat (12) arranged at the two ends of the supporting roller (4), the driving shaft (101) and the supporting roller (4) are arranged at intervals in the middle part and are provided with the chain supporting wheel (14) abutting against the chain plate (2), the driving wheel (102) is arranged on the driving shaft (101) and is engaged with the chain track (3), and the driving wheel (102) is located outside the chain supporting wheel (14); the supporting roller (4) is provided with the supporting wheel (13) abutting against the chain track (3), and the supporting wheel (13) is located between the bearing seat (12) and the chain supporting wheel (14).

2. A heavy-duty apron feeder as claimed in claim 1, characterized in that: The chain supporting roller (6) is arranged at intervals, the chain supporting roller (6) is rotatably arranged at the upper end of the rack (5) through the bearing seat (12) arranged at the two ends of the chain supporting roller (6), and the chain supporting roller (6) is arranged below the gap between two adjacent supporting rollers (4) and is rotatably connected with the rack (5) through the bearing seat (12).

3. The heavy-duty apron feeder of claim 1, wherein: One end of the driving shaft (101) is connected with a rotating driving member, and the driving shaft (101) is rotatably arranged at the front end of the rack (5) through the bearing seat (12) arranged at the two ends of the driving shaft (101).

4. The heavy-duty apron feeder of claim 1, wherein: The driving wheel (102) is in the form of a gear, the tooth thickness is 0.8-1 times the opening width of the chain track (3), and the tooth groove depth is greater than or equal to the radius of the chain track shaft (31).

5. The heavy-duty apron feeder of claim 1, wherein: The rack (5) comprises two main beams arranged opposite to each other, and the main beams are in the form of I-shaped structures, and the height of the main beams is 700-750 mm.

6. The heavy-duty apron feeder of claim 5, wherein: The lower part of the side wall of the main beam is arranged at intervals and is provided with a through hole, the chain supporting roller (6) passes through the rack (5) at the two ends, and the bearing seat (12) is arranged at the lower part of the main beam.

7. The heavy-duty apron feeder of claim 1, wherein: The two ends of the chain plate (2) are provided with reinforcing rib plates (21), the lower end of the chain plate (2) is provided with a reinforcing web plate (22), and the side wall of the middle part of the chain plate (2) is provided with a reinforcing rib plate (23).

8. The heavy-duty apron feeder of claim 2, wherein: The supporting roller (4) and the chain supporting roller (6) are in the form of solid rods, and the chain supporting wheel (14) is in the form of a circular ring and is sleeved on the driving shaft (101), the supporting roller (4) and the chain supporting roller (6).

9. The heavy-duty apron feeder of claim 1, wherein: The supporting wheel (13) is in the form of a circular ring, the outer edge side wall of the middle part of the supporting wheel (13) extends outward to form a limiting part, the diameter of the limiting part is greater than the diameters of the two sides, and the width of the limiting part is equal to or less than the opening width of the chain track (3).

10. The heavy-duty apron feeder of claim 2, wherein: The driving wheel (102) and the supporting wheel (13) are made of high-strength alloy steel 42CrMo, the chain track (3) is made of high-strength alloy steel Q460, and the supporting roller (4), the chain supporting wheel (14) and the chain supporting roller (6) are made of high-strength alloy steel 35CrMo.

Images