Automatic screening device for rubble soil material of core wall rockfill dam

Abstract

The utility model discloses a kind of automatic screening devices of heart wall rockfill dam gravel soil material, including shell, bottom plate is equipped in shell lower, bottom plate upper end surface four corners are equipped with supporting leg, corresponding multiple supporting legs are equipped with fixed plate on shell, supporting spring is equipped between fixed plate and supporting leg, detachable screen is equipped in shell interior, symmetrically mounting plate is equipped in shell interior, two mounting plates are symmetrically equipped with mounting hole, screen bottom end corresponding multiple mounting holes are equipped with mounting rod, corresponding mounting plate is equipped with fixed ring on multiple mounting rods, vibration motor is equipped on shell, discharge chute is opened in shell left end surface corresponding screen, support is equipped on bottom plate upper end surface right side, support left end surface corresponding shell is equipped with feeding box, feeding cylinder is rotatably arranged in the bottom end of the interior of feeding box, guide seat is arranged on the inner wall of the left and right two ends of feeding box corresponding to feeding cylinder, a through slot is opened on the feeding cylinder, through the design of feeding box, the intermittent uniformity of feeding process can be controlled, avoid screen surface uneven load or blockage problem.

Description

Technical Field

[0001] This invention relates to the field of automatic screening technology, specifically to an automatic screening device for gravel and soil materials in a core rockfill dam. Background Technology

[0002] Impermeable gravel soil has low compression deformation and high shear modulus, making it a good filling material for high core rockfill dams. It is highly adaptable to various terrains, can be sourced locally, and is easy to construct. Before construction, the gravel coating needs to be screened to remove coatings that do not meet the particle size requirements, and the qualified particles fall into the collection box for collection. Existing screening devices are inconvenient to control during screening and feeding, lack a suitable automatic feeding adjustment mechanism, and the screen replacement operation is relatively troublesome. There is a lack of a suitable quick replacement locking mechanism, and the replacement locking mechanism is exposed to the external environment and is easily damaged, affecting normal operation. There is also a lack of a suitable safety drive mechanism. Summary of the Invention

[0003] The purpose of this invention is to provide an automatic screening device for gravel and soil materials in core rockfill dams, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an automatic screening device for gravel and soil materials in a core rockfill dam, comprising a shell, a base plate at the bottom of the shell, and four legs at the four corners of the upper surface of the base plate. A fixing plate is provided on the shell corresponding to each of the legs, and a supporting spring is provided between the fixing plate and the legs. A detachable screen is installed inside the shell, with one end of the screen inclined downwards along the height of the shell along its length, and the other end resting on the side wall of the shell. The shell is symmetrically equipped with mounting plates, two of which... The mounting plate is symmetrically provided with mounting holes. The bottom end of the screen is provided with mounting rods corresponding to multiple mounting holes. Each mounting rod is provided with a fixing ring corresponding to the mounting plate. The housing is provided with a vibration motor. The left end of the housing is provided with a discharge chute corresponding to the low end of the screen. The upper right side of the bottom plate is provided with a bracket. The left end of the bracket is provided with a feeding box corresponding to the housing. The bottom of the feeding box is rotatably provided with a feeding cylinder. The inner walls of the left and right ends of the feeding box are provided with guide seats corresponding to the feeding cylinder. The feeding cylinder is provided with a through groove.

[0005] The present invention is further configured such that adjusting rods are provided at both the front and rear ends of the feeding cylinder, the front adjusting rod extends forward and passes through the feeding box, and an adjusting motor is connected to the front end of the front adjusting rod to facilitate multiple uniform feeding adjustments and drives.

[0006] The present invention is further provided with a baffle on the top of the front end face of the feeding box corresponding to the adjusting motor, to protect the position above the adjusting motor and prevent materials from accidentally falling and bumping during feeding.

[0007] The present invention is further configured such that locking seats are provided on both the front and rear sides of the lower end of the two mounting plates, and locking pins are provided through the multiple locking seats on the side near the mounting rod. Locking grooves are provided on the multiple mounting rods corresponding to the locking pins, which facilitates installation and locking.

[0008] The present invention is further configured such that each of the plurality of locking pins is provided with a retaining ring corresponding to the locking seat, thereby limiting the sliding of the locking pins.

[0009] The present invention is further configured such that a drive rod is rotatably provided between the two locking seats in the same group, and threaded holes are provided on the multiple locking pins corresponding to the drive rod. The drive rod and the threaded holes are threadedly connected, which facilitates safe and stable driving and avoids the threaded structure being exposed.

[0010] The present invention is further provided that each of the two drive rods is provided with a rotating ring, and the outer end of the rotating ring is provided with an anti-slip rubber pad to facilitate rotation drive.

[0011] By adopting the above technical solution, automatic feeding adjustment was achieved.

[0012] Compared with the prior art, the beneficial effects of the present invention are: an automatic screening device for gravel and soil materials in a core rockfill dam. 1. Through the design of the feeding box, the feeding cylinder is rotated by adjusting the motor and fed through the trough. The feeding process can be controlled to be intermittent and uniform, avoiding uneven screen load or clogging. This ensures screening efficiency and reduces the intensity of manual intervention. It realizes the control of feeding interval after one feeding, saving manpower.

[0013] 2. Through the design of the screen, the installation rod and the installation hole are connected and matched, and the fixing ring is used to limit the position of the screen. This enables the screen to be quickly positioned and fixed, so that the screen can be disassembled and assembled without the need for complicated tools. This significantly improves the replacement efficiency, makes it easy to flexibly select different specifications of screen according to the particle size requirements of the material, and reduces downtime maintenance time, thereby improving the continuity and economy of the screening operation.

[0014] 3. The locking seat design employs a threaded transmission mechanism consisting of a drive rod and a threaded hole. The rotating ring drives the locking pin to move radially, achieving a secure lock on the mounting rod. This structure features smooth transmission and good self-locking, avoiding the risk of loosening under vibration conditions and ensuring the stability of the screen under long-term high-frequency vibration. It also reduces maintenance frequency, enhances the reliability and safety of equipment operation, and prevents the threaded structure of the drive rod from being exposed and damaged, ensuring safe use over a long period. Attached Figure Description

[0015] Figure 1 A schematic diagram of the preferred overall structure of an automatic screening device for gravel and soil materials in a core rockfill dam. Figure 2 A schematic diagram of the preferred shell structure of an automatic screening device for gravel and soil materials in a core rockfill dam. Figure 3 A schematic diagram of a preferred screen structure for an automatic screening device for gravel and soil materials in a rockfill dam with a core wall; Figure 4 An internal sectional view of the overall structure of the mounting plate of a preferred automatic screening device for gravel and soil materials in a rockfill dam with core wall structure. Figure 5 This is a cross-sectional view of the internal structure of the feed box of a preferred automatic screening device for gravel and soil materials in a rockfill dam.

[0016] In the diagram: 1. Shell; 2. Base plate; 3. Support leg; 4. Fixing plate; 5. Support spring; 6. Screen; 7. Mounting plate; 8. Mounting hole; 9. Mounting rod; 10. Fixing ring; 11. Vibrating motor; 12. Discharge chute; 13. Bracket; 14. Feeding box; 15. Feeding cylinder; 16. Guide seat; 17. Through groove; 18. Adjusting rod; 19. Adjusting motor; 20. Baffle; 21. Locking seat; 22. Locking column; 23. Locking groove; 24. Snap ring; 25. Drive rod; 26. Threaded hole; 27. Rotating ring; 28. Anti-slip rubber pad. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figures 1-5An automatic screening device for gravel and soil materials in a core rockfill dam includes a housing 1, a base plate 2 at the bottom of the housing 1, and four support legs 3 at the four corners of the upper surface of the base plate 2. A fixing plate 4 is provided on the housing 1 corresponding to each support leg 3, and a supporting spring 5 is provided between the fixing plate 4 and the support leg 3. A detachable screen 6 is installed inside the housing 1, with one end of the screen 6 inclined downwards along the height direction of the housing 1 and the other end overlapping the side wall of the housing 1. Mounting plates 7 are symmetrically arranged inside the housing 1, and mounting holes 8 are symmetrically opened on both mounting plates 7. The bottom end of the screen 6 is provided with mounting rods 9 corresponding to multiple mounting holes 8. Each mounting rod 9 is provided with a fixing ring 10 corresponding to the mounting plate 7. The housing 1 is provided with a vibration motor 11. The left end of the housing 1 is provided with a discharge chute 12 corresponding to the low end of the screen 6. The right side of the upper end face of the bottom plate 2 is provided with a bracket 13. The left end of the bracket 13 is provided with a feeding box 14 corresponding to the housing 1. The bottom end of the feeding box 14 is provided with a rotating feeding cylinder 15. The inner walls of the left and right ends of the feeding box 14 are provided with guide seats 16 corresponding to the feeding cylinder 15. The feeding cylinder 15 is provided with a through groove 17.

[0019] In this embodiment, the gravel material to be screened is added into the feeding box 14. The feeding cylinder 15 rotates to the vertical position of the through groove 17 to start feeding. After a certain amount of material is fed, the feeding cylinder 15 rotates to the horizontal position of the through groove 17 to stop feeding. The vibration motor 11 drives the housing 1 with the fixed plate 4 and the screen 6 to vibrate and screen the material relative to the multiple support legs 3 with support springs 5. Unsuitable smaller particles fall down, and raw materials of suitable particle size are vibrated and discharged through the discharge chute 12. Rubber springs are preferred for the support springs 5.

[0020] More specifically, after the device has been used for a long time, the screen 6 is disassembled and replaced. The mounting rod 9 of the new screen 6 is initially installed in accordance with the mounting hole 8 of the mounting plate 7, and the fixing ring 10 provides initial positioning for the installation.

[0021] Please see Figure 1 and Figure 5 As one implementation method for adjusting the feeding: the feeding cylinder 15 is provided with adjusting rods 18 at both the front and rear ends. The front adjusting rod 18 extends forward and passes through the feeding box 14. The front end of the front adjusting rod 18 is connected to an adjusting motor 19. The top of the front end face of the feeding box 14 is provided with a baffle 20 corresponding to the adjusting motor 19.

[0022] Specifically, the control device has its own control system. It starts the adjustment motor 19, which is fixedly installed on the feeding box 14 by its own L-shaped plate, so as to realize the rotation adjustment of the feeding cylinder 15 and realize the feeding adjustment drive.

[0023] Please see Figures 2-4As one method of installation and locking: locking seats 21 are provided on both the front and rear sides of the lower end of the two mounting plates 7, and locking pins 22 are provided through the multiple locking seats 21 near the mounting rods 9. Locking grooves 23 are provided on the multiple mounting rods 9 corresponding to the locking pins 22, and retaining rings 24 are provided on the multiple locking pins 22 corresponding to the locking seats 21.

[0024] Specifically, the locking pin 22 slides relative to the locking seat 21 and is inserted into the locking groove 23 of the mounting rod 9 to achieve stable installation and locking.

[0025] Please see Figure 2 and Figure 4 As one implementation of the locking drive: a drive rod 25 is rotatably provided between two locking seats 21 in the same group, and threaded holes 26 are opened on multiple locking pins 22 corresponding to the drive rod 25. The drive rod 25 and the threaded holes 26 are threadedly connected. A rotating ring 27 is provided on both drive rods 25, and an anti-slip rubber pad 28 is provided on the outer end of the rotating ring 27.

[0026] Specifically, by holding the rotating ring 27 with the anti-slip rubber pad 28, the drive rod 25 is rotated. The drive rod 25 and the threaded hole 26 are threaded together to achieve the locking operation drive.

[0027] In summary, the overall equipment is in use: When in the feeding adjustment state, a large amount of raw materials to be screened are added into the feeding box 14. When feeding is required, the control device has its own control system to start the adjustment motor 19. The adjustment motor 19 drives the adjustment rod 18 to rotate, so that the feeding cylinder 15 rotates relative to the feeding box 14. The through groove 17 of the feeding cylinder 15 rotates to the vertical opening state to realize feeding. When it rotates to the horizontal state, feeding stops. This facilitates intermittent and uniform feeding and screening after a large amount of feeding, ensuring the screening effect.

[0028] When the screen 6 is being replaced, hold the rotating ring 27 with the anti-slip rubber pad 28 and rotate the drive rod 25. The drive rod 25 and the threaded hole 26 are threaded together, so that the locking pin 22 can slide relative to the locking pin 22 for adjustment. After the locking pin 22 is pulled out from the locking groove 23, the screen 6 with the mounting rod 9 can be disassembled for inspection or replacement.

[0029] When the screen 6 is in the installation state, the repaired screen 6 or the new screen 6 is installed on the mounting plate 7. The mounting rod 9 and the mounting hole 8 are installed and positioned. The fixing ring 10 provides initial positioning for the installation. After initial positioning and installation, the rotating ring 27 with anti-slip rubber pad 28 is rotated in the opposite direction. The drive rod 25 rotates in the opposite direction. The threaded engagement allows the locking pin 22 to slide outward relative to the locking seat 21. It is inserted into the corresponding locking groove 23 to achieve installation and locking. The retaining ring 24 limits the sliding and prevents slippage.

Claims

1. An automatic screening device for gravel and soil materials in a core rockfill dam, comprising a shell (1), a base plate (2) below the shell (1), support legs (3) at the four corners of the upper surface of the base plate (2), fixing plates (4) corresponding to the support legs (3) on the shell (1), and support springs (5) between the fixing plates (4) and the support legs (3), characterized in that: The housing (1) is detachably equipped with a screen (6), and one end of the screen (6) in the length direction is inclined downward along the height direction of the housing (1), while the other end is attached to the side wall of the housing (1); the housing (1) is symmetrically equipped with mounting plates (7), and mounting holes (8) are symmetrically opened on both mounting plates (7). The bottom end of the screen (6) is equipped with mounting rods (9) corresponding to multiple mounting holes (8), and fixing rings (10) are provided on multiple mounting rods (9) corresponding to the mounting plates (7). 1) A vibrating motor (11) is provided on the upper part. A discharge chute (12) is provided on the left end of the housing (1) corresponding to the lower end of the screen (6). A bracket (13) is provided on the right side of the upper end of the bottom plate (2). A feeding box (14) is provided on the left end of the bracket (13) corresponding to the housing (1). A feeding cylinder (15) is rotatably provided at the bottom of the feeding box (14). A guide seat (16) is provided on the inner wall of both the left and right ends of the feeding box (14) corresponding to the feeding cylinder (15). A through groove (17) is provided on the feeding cylinder (15).

2. The automatic screening device for gravel and soil materials in a core rockfill dam according to claim 1, characterized in that: The feeding cylinder (15) is provided with adjusting rods (18) at both the front and rear ends. The front adjusting rod (18) extends forward and passes through the feeding box (14). The front end of the front adjusting rod (18) is connected to an adjusting motor (19).

3. The automatic screening device for gravel and soil materials in a core rockfill dam according to claim 2, characterized in that: The front end of the feeding box (14) is provided with a baffle (20) corresponding to the adjustment motor (19).

4. The automatic screening device for gravel and soil materials in a core rockfill dam according to claim 1, characterized in that: Both mounting plates (7) have locking seats (21) on both the front and rear sides of their lower ends. Each locking seat (21) has a locking post (22) through it on the side near the mounting rod (9). Each mounting rod (9) has a locking groove (23) corresponding to the locking post (22).

5. An automatic screening device for gravel and soil materials in a core rockfill dam according to claim 4, characterized in that: Each of the locking pins (22) is provided with a retaining ring (24) corresponding to the locking seat (21).

6. An automatic screening device for gravel and soil materials in a core rockfill dam according to claim 4, characterized in that: A drive rod (25) is rotatably provided between the two locking seats (21) in the same group, and a threaded hole (26) is provided on each of the multiple locking pins (22) corresponding to the drive rod (25). The drive rod (25) and the threaded hole (26) are threadedly connected.

7. An automatic screening device for gravel and soil materials in a core rockfill dam according to claim 6, characterized in that: Both drive rods (25) are provided with rotating rings (27), and the outer end of the rotating rings (27) is provided with anti-slip rubber pads (28).

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