Circulating impact resistance testing machine for wear-resistant steel balls

Abstract

The utility model discloses a circulating anti-impact testing machine for wear-resistant steel balls, and relates to the field of experimental equipment. The impact platform is obliquely arranged with the front portion higher than the rear portion, a deceleration strip is arranged on the top face of the impact platform, and a fence is arranged on the outer edge of the impact platform. A cleaning rake is arranged on one side of the fence by means of reciprocating motion of a driving assembly, a branching fairway is erected on the other side of the fence in a communicating mode, and an open storage box is arranged below the branching fairway; and a circulating ball channel is communicated and erected on the rear side of the fence and is connected with a ball inlet in the bottom of the elevator, and a horizontal conveyor is connected to a ball outlet in the top of the elevator. The steel ball impact platform has the advantages that the impact platform is connected with the elevator through the circulating ball channel, so that the steel balls are circularly lifted by the elevator, the initial speed is regulated and controlled for throwing, the use flexibility and the simulation degree of an experiment result are guaranteed, the damaged steel balls can be cleaned through the impact platform, the experiment smoothness is guaranteed, and the experiment efficiency is improved.

Description

Technical Field

[0001] This utility model pertains to experimental equipment, specifically to a cyclic wear-resistant steel ball impact testing machine. Background Technology

[0002] Wear-resistant steel balls are a key consumable in semi-autogenous grinding mills for mineral processing. As global mining equipment becomes increasingly larger, the size of semi-autogenous grinding mills continues to rise, posing greater impact challenges to the wear-resistant steel balls and thus requiring them to possess higher impact toughness. This places higher demands on the materials, heat treatment processes, and post-production testing methods for wear-resistant steel balls.

[0003] Current impact testing equipment for wear-resistant steel balls suffers from several shortcomings. These include bulky equipment, high costs and low efficiency, and a limited testing mode, primarily a non-adjustable free-fall test. The lack of flexibility in setting the drop height and initial horizontal velocity significantly reduces the realism of the test results. Although some wear-resistant steel ball manufacturers invest heavily in extensive testing facilities and multiple sets of equipment to cover various drop conditions, this approach still struggles to effectively address the challenges of product diversification, numerous specifications, and batch testing, while also significantly increasing the cost of production equipment. Therefore, existing testing equipment urgently needs improvement and optimization. Utility Model Content

[0004] To address the technical problems of insufficient flexibility and inadequate simulation of experimental results in existing steel ball impact testing equipment, this invention provides a circulating wear-resistant steel ball impact testing machine. The impact platform, through the connection between the circulating ball track and the elevator, allows the steel balls to be circulated and lifted by the elevator, with controlled initial velocity during descent. This ensures both flexibility and high simulation of experimental results. Furthermore, the impact platform can clean damaged steel balls, ensuring smooth testing and improving experimental efficiency.

[0005] The technical solution adopted by this utility model is as follows: a circulating wear-resistant steel ball impact testing machine is provided, including a test platform, an impact platform and a hoist are arranged at the front and rear of the test platform; the impact platform is inclined with the front higher than the rear, a speed reduction belt is provided on the top surface of the impact platform, and a barrier is provided on the outer edge of the impact platform; a cleaning rake is provided on one side of the barrier by means of a drive component, the cleaning rake is positioned corresponding to the speed reduction belt, and a branch ball track is connected to the other side of the barrier, the branch ball track is positioned corresponding to the cleaning rake and the speed reduction belt, and an open storage box is provided below the branch ball track, the storage box is placed on the test platform; a circulating ball track is connected to the rear side of the barrier, the circulating ball track is connected to the ball inlet at the bottom of the hoist, and a horizontal conveyor is connected to the ball outlet at the top of the hoist, the horizontal conveyor is located between the impact platform and the hoist, and is positioned corresponding to the impact platform.

[0006] After the steel ball is lifted to a certain height by a hoist, it is transferred to a horizontal conveyor. The horizontal conveyor moves the steel ball horizontally. After reaching the end of the horizontal conveyor, the steel ball, with initial velocity, is thrown out and lands on an impact platform in a parabolic trajectory, thus conducting an impact test. The inclined surface of the impact platform causes the steel ball to roll downwards along it. Barriers on the impact platform prevent the steel ball from rolling off unnecessarily, ensuring the reliability of the test. After rolling to the rear of the impact platform, the steel ball is guided back to its starting position by a circulating ball track. The steel balls enter the inlet of the elevator, which then lifts them to a higher height and throws them again onto the impact platform for a cyclic test to ensure smooth operation. If a steel ball breaks upon impact, the increased friction from the speed bumps on the platform helps it stay on the bumps. A cleaning rake then pushes the broken ball into the designated lane on one side of the enclosure, where it falls into a collection box. This process separates the steel balls and prevents broken balls from interfering with the cyclic test of other balls on the impact platform, ensuring the smooth operation of the test.

[0007] To further optimize this technical solution, the elevator includes a retractable and self-locking upright frame. The top of the outer side of the upright frame is fixedly installed with a horizontal conveyor. Output shafts are rotatably mounted on the top and bottom of the upright frame. One of the output shafts is driven by a power structure. Sprockets are mounted on both sides of the output shaft, and the sprockets on the same side of the output shaft are driven by chains. A hopper is placed between the chains.

[0008] The hoist is based on a retractable self-locking frame. It uses an output shaft within the frame and chains and sprockets to circulate the buckets, enabling the lifting and unloading of steel balls. The structure is simple, and the operation is safe and reliable. The retractable self-locking of the frame is achieved on the uprights, which consist of slidingly fitted straight rods. These rods are equipped with slots and blocks, with multiple slots distributed along the height of the rods. This allows for multi-point positioning of the blocks, enabling adjustment of the upright height, and consequently, the frame height. After adjusting the frame height, the number of chain links and buckets can be adjusted to accommodate changes in height. The operation is simple, improving operational flexibility.

[0009] To further optimize this technical solution, the horizontal conveyor includes an outer frame fixedly installed with the upright, and transmission rollers are rotatably mounted on both the front and rear sides of the outer frame, with one of the transmission rollers being driven and installed by a power structure; a conveyor belt is provided on both transmission rollers, and an anti-slip surface is provided on the outer surface of the conveyor belt.

[0010] After the steel balls are tumbled onto the horizontal conveyor by the hopper, they are supported by the horizontal transmission belt. The transmission roller drives the horizontal conveyor belt to move, causing the steel balls to move. After moving to the end of the conveyor belt, the steel balls are thrown outward. The outer surface of the conveyor belt is equipped with an anti-slip surface to improve the smoothness and reliability of the steel balls' movement.

[0011] To further optimize this technical solution, the outer frame includes a horizontal support plate, and the transmission rollers are all rotatably mounted on the horizontal support plate. Fixed panels are fixedly installed on both sides of the horizontal support plate, and one of the fixed panels is fixedly installed with the upright frame.

[0012] The outer frame consists of a horizontal support plate and fixed panels. The horizontal support plate provides assembly space for the installation of the drive rollers and drive belt. The fixed panels on both sides of the horizontal support plate reinforce the structure and ensure safety during use. One of the fixed panels is fixedly installed to the upright frame, supporting the horizontal conveyor on the hoist. The structure is simple and easy to maintain.

[0013] To further optimize this technical solution, the anti-slip surface includes a groove formed on the outer surface of the horizontal conveyor belt.

[0014] By creating grooves on the outer surface of the conveyor belt, the friction between it and the steel balls is increased, ensuring smooth conveying of the steel balls. The structure is simple and reduces the cost of use.

[0015] To further optimize this technical solution, the drive component includes a telescopic cylinder, the cylinder body of which is fixedly installed on the outer wall of the enclosure, and the output shaft of the telescopic cylinder passes through the enclosure and is fixedly installed with the cleaning rake.

[0016] The cleaning rake uses a telescopic cylinder to clean up broken steel balls, which is fast-responding, simple in structure, and stable and reliable in use.

[0017] To further optimize this technical solution, a protective net is provided along the outer edge of the test platform.

[0018] The protective netting prevents steel balls and fragments from flying outwards during the test, thus avoiding injury to personnel and ensuring the safety of the test.

[0019] The beneficial effects of this utility model are as follows:

[0020] 1. The height of the hoist is adjusted by the extension and self-locking of the columns on the upright frame. The number of chains and buckets inside the upright frame can be increased or decreased to adapt to the change in the height of the upright frame. Its operation is simple, thus providing different test heights for steel balls and ensuring the flexibility of the test.

[0021] 2. After the steel balls are unloaded from the hopper onto the horizontal conveyor, the conveyor belt supports the steel balls. The surface of the conveyor belt is grooved to increase the friction with the steel balls, making the conveyor belt transport the steel balls smoothly and stably, ensuring the reliability of the conveying. After the steel balls move to the end of the conveyor belt, the horizontal conveyor provides the steel balls with an initial velocity, so that the steel balls are thrown onto the impact platform for impact testing. The operation is simple and efficient.

[0022] 3. After the steel ball is thrown onto the impact platform, the inclined structure of the impact platform, which is higher in the front and lower in the back, causes the steel ball to roll down along the impact platform and into the circulating ball track. The steel ball is then guided back to the ball inlet at the bottom of the elevator and lifted up again by the bucket, and then flipped onto the horizontal conveyor, so that the steel ball is thrown in a cycle to conduct a cyclic impact test and improve the flexibility of use.

[0023] 4. After the steel ball breaks upon impact, its rolling along the platform becomes uneven. When it rolls onto the speed bump, the increased friction between the speed bump and the steel ball makes it easier for the broken ball to remain on the speed bump. It is then pushed into the ball track by the cleaning rake and collected in the collection box to avoid affecting the rolling of other steel balls on the impact platform and to ensure the smooth progress of the test. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the circulating wear-resistant steel ball impact testing machine in this embodiment;

[0025] Figure 2 This is a schematic diagram of the hoist structure in this embodiment;

[0026] Figure 3 This is a schematic diagram of the horizontal transport machine in this embodiment;

[0027] Figure 4 This is a schematic diagram of the impact platform in this embodiment.

[0028] In the diagram, 1. Test platform; 2. Impact platform; 3. Elevator; 301. Frame; 302. Output shaft; 303. Sprocket; 304. Chain; 305. Hopper; 4. Speed ​​bump; 5. Enclosure; 6. Cleaning rake; 7. Diverting ball track; 8. Storage box; 9. Circulating ball track; 10. Horizontal conveyor; 1001. Horizontal support plate; 1002. Fixed panel; 1003. Drive roller; 1004. Conveyor belt; 11. Telescopic cylinder; 12. Protective net. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0030] Please see the appendix Figure 1 Appendix Figure 2A circulating wear-resistant steel ball impact testing machine includes a test platform 1, an impact platform 2 and a hoist 3 mounted on the test platform 1. The hoist 3 lifts the steel ball to a certain height. The hoist 3 includes a self-locking telescopic upright 301. The base of the self-locking telescopic upright 301 is mounted on the test platform 1. Columns are distributed circumferentially on the base, and crossbeams are fixedly mounted on the columns. The crossbeams connect the columns, distribute the load, and provide lateral force resistance, thus forming the basic frame of the upright 301. The columns are composed of two slidingly fitted straight rods, giving the upright 301 telescopic flexibility. Matching slots and blocks are set on the straight rods. Multiple slots are distributed along the height of the column. After the blocks are engaged in different slots, the position of the column is adjusted and supported, thereby realizing the telescopic and self-locking functions of the upright 301 and ensuring flexibility of use.

[0031] Please see the appendix Figure 2 The top and bottom of the upright frame 301 are both rotatably mounted with output shafts 302. Sprockets 303 are fitted on both sides of the output shaft 302. The two sprockets 303 on the same side of the output shaft 302 are driven by a chain 304. One of the output shafts 302 is driven by a power structure. When the power structure drives the output shaft 302 to rotate, the meshing of the chain 304 and the sprockets 303 causes the two output shafts 302 to run synchronously. A hopper 305 is evenly arranged between the two chains 304. 5. As the chain 304 moves from bottom to top, the steel ball is transferred upwards. After the hopper 305 moves to the top of the upright 301, the chain 304 passes around the output shaft 302, causing the hopper 305 to flip and change direction, thereby pouring out the steel ball. The hopper 305 then moves from top to bottom along the upright 301, thus cyclically lifting and unloading the steel ball. When the upright 301 is extended and adjusted in height, the impact test height of the steel ball can be adjusted by increasing or decreasing the number of chain links 304 and the number of hoppers 305, making it flexible and easy to use.

[0032] Please see the appendix Figure 1-3A horizontal conveyor 10 is mounted on top of the upright frame 301. When the hopper 305 is lifted to the top of the upright frame 301 and rotated by the chain 304 to pour out the steel balls, the steel balls fall onto the horizontal conveyor 10 and are transported horizontally by the horizontal conveyor 10. The horizontal conveyor 10 is positioned between the impact platform 2 and the elevator 3, and corresponds to the position of the impact platform 2. The outer frame of the horizontal conveyor 10 is fixedly installed on the outer side of the top of the upright frame 301. The outer frame includes a horizontal support plate 1001, and fixed surfaces are fixedly installed on both sides of the horizontal support plate 1001. The plate 1002 has a fixed panel 1002 on one side that is fixedly installed with the upright frame 301 to support the outer frame. Both sides of the horizontal support plate 1001 are rotatably mounted with transmission rollers 1003. The two transmission rollers 1003 are equipped with a conveyor belt 1004. After one of the transmission rollers 1003 is connected to the power structure, the transmission belt is driven to run. The conveyor belt 1004 drives the steel ball to move horizontally. The outer surface of the transmission belt is provided with an anti-slip surface, which is achieved by setting grooves on the outer surface of the conveyor belt 1004.

[0033] Please see the appendix Figure 1 Appendix Figure 4 After the steel ball moves to the end of the transmission belt, it is thrown onto the impact platform 2 with a certain initial velocity. The impact platform 2 is inclined, with the front higher than the back. The steel ball will roll down the impact platform 2. A barrier 5 is set on the outer edge of the impact platform 2 to prevent the steel ball from rolling off the impact platform 2 at will. A circulating ball track 9 is connected to the rear side of the barrier 5. After the steel ball rolls to the rear of the impact platform 2, it rolls along the circulating ball track 9. The circulating ball track 9 is connected to the ball inlet at the bottom of the elevator 3, thus collecting the steel ball. The steel balls are introduced into the hopper 305 of the elevator 3 and lifted upwards again by the elevator 3 for a cyclic impact test. To ensure the smooth circulation of the steel balls, a control switch can be installed at the end of the circulation ball track 9. The control switch is linked to the position switch of the hopper 305 near the ball outlet of the circulation ball track 9, and the opening window of the control switch is the time window when the steel balls automatically roll into the hopper 305. This allows the individual steel balls to roll smoothly into the hopper 305 in sequence and be lifted upwards by the hopper 305, ensuring smooth operation.

[0034] Please see the appendix Figure 4 The top surface of the impact platform 2 is equipped with a speed bump 4. The speed bump 4 slows down the steel ball. When the steel ball is damaged, it rolls along the inclined surface of the impact platform 2. Due to the damage to the surface of the steel ball, the steel ball generates additional friction and resistance when rolling, and its rolling will be significantly less smooth. After contacting the speed bump 4, the speed bump 4 increases the unevenness of the inclined surface. For the already damaged steel ball, the contact with the speed bump 4 will generate greater resistance, making it easier for the steel ball to stay on the speed bump 4 so that the damaged steel ball can be cleaned.

[0035] Please see the appendix Figure 4A cleaning rake 6 is installed on one side of the enclosure 5 by means of a drive assembly that moves back and forth. The drive assembly can be a telescopic cylinder 11. The cylinder body of the telescopic cylinder 11 is fixedly installed on the outer wall of the enclosure 5. The output shaft 302 of the telescopic cylinder 11 passes into the enclosure 5 and is fixedly installed with the cleaning rake 6. The telescopic cylinder 11 drives the cleaning rake 6 to move back and forth. A branch ball track 7 is connected to the other side of the enclosure 5. The branch ball track 7 corresponds to the cleaning rake 6 and the speed bump 4. When the telescopic cylinder 11 drives the cleaning rake 6 to move, it pushes the broken steel balls into the branch ball track 7, so that the steel balls roll along the branch ball track 7 into the collection box 8 set below it, thereby collecting the broken steel balls and screening out the low-quality steel balls.

[0036] Please see the appendix Figure 1 After the hoist 3 lifts the steel ball upward and throws it into the horizontal conveyor 10, the horizontal conveyor 10 throws the steel ball onto the impact platform 2 for impact testing. The outer edge of the test platform 1 is equipped with a protective net 12 to ensure the safety of the test operation.

[0037] The working principle of this circulating wear-resistant steel ball impact testing machine is as follows: First, the height of the upright frame 301 is adjusted according to the test requirements. The column of the upright frame 301 is telescopically extended, causing the locking blocks to engage with the appropriate slots on the column, thus limiting and supporting the height of the column, thereby supporting the upright frame 301 to the appropriate height. The number of chain links 304 inside the upright frame 301 is increased or decreased according to the height change of the upright frame 301, as well as the number of hoppers 305, thereby adapting to the height changes of the upright frame 301 and improving the flexibility of the test. After adjusting the upright 301 to a suitable height, the elevator 3 drives the hopper 305 to move cyclically, sequentially feeding steel balls into the hopper 305. The elevator then lifts the steel balls to the highest point of the upright 301. The chain 304 then passes around the output shaft 302, causing the hopper 305 to flip and reverse direction, thus emptying the steel balls onto the horizontal conveyor 10. The empty hopper 305 moves downwards with the chain 304 to be reloaded with steel balls, continuing the cyclical operation. The steel balls that have fallen onto the horizontal conveyor 10 are horizontally conveyed. After reaching the end of the conveyor belt 1004, the steel balls are thrown and land on the impact platform 2, completing a single impact test. The initial velocity provided by the horizontal conveyor 10 to the steel balls can be adjusted by the drive speed of the horizontal conveyor 10, allowing for flexible use. The inclined design of the impact platform 2 allows the steel ball to roll downwards along it. The barrier 5 on the impact platform 2 prevents the steel ball from rolling off arbitrarily, ensuring it rolls smoothly into the circulation track 9 behind the barrier 5. This allows the steel ball to be reintroduced into the inlet of the elevator 3, enabling continuous impact and smooth, easy operation. If a steel ball breaks after landing on the impact platform 2, its rolling motion becomes uneven. Upon contact with the speed bump 4 on the impact platform 2, the broken ball remains on the speed bump 4. At this point, the telescopic cylinder 11 drives the cleaning rake 6 to push the broken steel ball into the branch track 7 on one side of the barrier 5, allowing it to fall into the collection box 8 of the test platform 1, thus not affecting the continued testing of other steel balls.

Claims

1. A circulating wear-resistant steel ball impact testing machine, characterized in that: The test platform (1) includes an impact platform (2) and a hoist (3) mounted on the front and back of the test platform (1). The impact platform (2) is inclined with the front higher than the back. A speed bump (4) is provided on the top surface of the impact platform (2), and a barrier (5) is provided on the outer edge of the impact platform (2). A cleaning rake (6) is provided on one side of the barrier (5) by means of a drive assembly. The cleaning rake (6) corresponds to the position of the speed bump (4), and a ball lane (7) is connected to the other side of the barrier (5). Corresponding to the positions of the cleaning rake (6) and the speed bump (4), an open storage box (8) is set below the branch ball track (7), and the storage box (8) is placed on the test platform (1); a circulating ball track (9) is connected to the back of the enclosure (5), the circulating ball track (9) is connected to the ball inlet at the bottom of the elevator (3), and a horizontal conveyor (10) is connected to the ball outlet at the top of the elevator (3). The horizontal conveyor (10) is located between the impact platform (2) and the elevator (3), and corresponds to the position of the impact platform (2).

2. The circulating wear-resistant steel ball impact testing machine according to claim 1, characterized in that: The elevator (3) includes a retractable self-locking upright (301). The top of the outer side of the upright (301) is fixedly installed with the horizontal conveyor (10). The top and bottom of the upright (301) are rotatably mounted with output shafts (302). One of the output shafts (302) is driven by the power structure. Both sides of the output shaft (302) are fitted with sprockets (303). The sprockets (303) on the same side of the output shaft (302) are driven by chains (304). A hopper (305) is arranged between the chains (304).

3. The circulating wear-resistant steel ball impact testing machine according to claim 2, characterized in that: The horizontal conveyor (10) includes an outer frame fixedly installed with the upright (301). The front and rear sides of the outer frame are rotatably mounted with transmission rollers (1003), and one of the transmission rollers (1003) is driven and installed with the power structure. The two transmission rollers (1003) are equipped with a conveyor belt (1004), and the outer surface of the conveyor belt (1004) is provided with an anti-slip surface.

4. The circulating wear-resistant steel ball impact testing machine according to claim 3, characterized in that: The outer frame includes a horizontal support plate (1001), and the transmission rollers (1003) are rotatably mounted on the horizontal support plate (1001). Fixed panels (1002) are fixedly installed on both sides of the horizontal support plate (1001), and one of the fixed panels (1002) is fixedly installed with the upright frame (301).

5. The circulating wear-resistant steel ball impact testing machine according to claim 2, characterized in that: The anti-slip surface includes grooves formed on the outer surface of the horizontal conveyor belt (1004).

6. The circulating wear-resistant steel ball impact testing machine according to claim 1, characterized in that: The drive assembly includes a telescopic cylinder (11), the cylinder body of which is fixedly installed on the outer side wall of the enclosure (5), and the output shaft (302) of the telescopic cylinder (11) passes through the enclosure (5) and is fixedly installed with the cleaning rake (6).

7. The circulating wear-resistant steel ball impact testing machine according to claim 1, characterized in that: The outer edge of the test platform (1) is provided with a protective net (12).

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