Anti-arching device for sand bin of mixing plant
The arch-breaking device with mechanical structure solved the problem of arching in the sand and gravel silos of the mixing plant, achieving smooth material feeding and production stability, and reducing equipment wear and safety risks.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN TAILIANSHANG CONCRETE CO LTD
- Filing Date
- 2025-05-27
- Publication Date
- 2026-04-10
AI Technical Summary
Arching of sand and gravel silos frequently occurs in mixing plants, leading to poor material conveying and even blockages, affecting production efficiency and safety. Existing technologies such as vibration devices and guide plates are ineffective and pose safety risks.
The arch-breaking device, which employs a mechanical structure, includes a support frame, a hopper, a motor, a top shaft, a bottom shaft, and an arch-breaking plate. Through the meshing transmission of gears and racks, the arch-breaking plate is driven to reciprocate, and in conjunction with the rotating drum agitating the material, the arch structure is broken.
It achieves efficient arch breaking, ensures smooth material feeding, improves production efficiency, reduces maintenance costs, avoids the safety risks of manual arch breaking, and extends the life of the silo.
Smart Images
Figure CN224104699U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of mixing station equipment, especially to a mixing station sand and gravel stock bin anti-arching device. BACKGROUND
[0002] In the modern construction industry, sand and gravel, as a large amount of and extremely critical basic building material, its storage and supply stability plays a decisive role in the construction process. As the core place of building material production, the sand and gravel stock bin is the key facility to ensure the storage and efficient conveying of sand and gravel. However, in the actual production process, the sand and gravel stock bin arching problem occurs frequently, which has become a prominent problem restricting the production efficiency and operation stability of the mixing station.
[0003] Sand and gravel stock bin arching refers to the formation of arch-shaped clump structure above the discharge port of the stock bin due to the interaction of various complex factors. Once this phenomenon occurs, it will seriously hinder the normal discharge of sand and gravel, cause poor material conveying, and even completely block the discharge port, forcing the production of the mixing station to be interrupted.
[0004] Currently, in order to solve the sand and gravel stock bin arching problem, various methods have been tried in the industry. Some mixing stations install vibration devices on the inner wall of the stock bin to try to destroy the adhesion between the materials and the arch-shaped structure by vibration energy, so that the materials can flow again. However, long-term high-frequency vibration can easily cause fatigue damage to the stock bin structure, reducing the service life of the stock bin, and for sand and gravel materials with high moisture content and high viscosity, the vibration effect is often unsatisfactory. Some others use guide plates in the stock bin to guide the flow of materials and disperse the pressure of materials. However, in actual application, due to the huge pressure of sand and gravel, the guide plates often deform and fall off due to the inability to withstand the pressure, and the anti-arching effect is difficult to be durable and stable. In addition, manual intervention is also a common method. When arching occurs, workers need to enter the interior of the stock bin to break the arch by knocking, removing, etc. This method not only has low efficiency and consumes a lot of manpower and resources, but also has great safety risks, and workers face the risk of being buried by collapsing materials.
[0005] Therefore, the present application provides a mixing station sand and gravel stock bin anti-arching device to meet the needs. UTILITY MODEL CONTENTS
[0006] The purpose of the present application is to provide a mixing station sand and gravel stock bin anti-arching device, which effectively breaks the material arching phenomenon in the sand and gravel stock bin through the coordinated operation of the mechanical structure, ensures the smooth discharge of sand and gravel, improves the production efficiency of the mixing station, reduces the production interruption and maintenance cost caused by arching problems, and avoids the safety hazards caused by manual arch breaking.
[0007] In order to realize the above object, the utility model provides the following technical scheme: a kind of sand and gravel bunker anti-arching device of mixing station, including support frame, bunker, motor, top shaft, bottom shaft and arch breaking plate.
[0008] The top of the support frame is provided with the bunker, and the support frame is provided with a mounting bracket on the side of the bunker.
[0009] Further, one end of the top shaft is provided with a gear, and a rack is slidably connected to the outer wall of the bunker.
[0010] Further, a rack sleeve is provided on the outer wall of the bunker, and the rack sleeve has two groups and is symmetrically arranged on the horizontal two sides of the gear.
[0011] Further, a driving spool is provided on the top shaft, and the driving spool has two groups and is symmetrically arranged.
[0012] Further, the top of the bunker is provided with a guide cover, the guide cover covers the top shaft, the bottom of the guide cover is provided with a spring seat, the spring seat has two groups and is matched with the driving I-shaped wheel, the spring seat is slidably connected with a pressure roller seat, the spring seat and the pressure roller seat are press-fitted with springs, and the bottom of the pressure roller seat is rotatably connected with a pressure roller, and the pressure roller is used for increasing the friction between the chain and the driving I-shaped wheel. The pressure roller is pressed against the chain under the action of the spring, further enhances the friction between the chain and the driving I-shaped wheel, prevents slipping phenomenon, and ensures reliable operation of the arch breaking device.
[0013] Further, the bottom shaft is provided with a driven I-shaped wheel and a rotating drum, the chain is wound on the driven I-shaped wheel, the outer wall of the driven I-shaped wheel is also uniformly provided with anti-skid teeth, and the outer wall of the rotating drum is uniformly provided with leaf plates. The driven I-shaped wheel cooperates with the driving I-shaped wheel to realize transmission of the chain and drive the arch breaking plate to move, and the leaf plates on the rotating drum can stir the sand and stone materials near the discharge port of the bunker when the bottom shaft rotates, assist in arch breaking and promote smooth discharge of the materials.
[0014] Further, the arch breaking plate is provided with a sliding groove, a sliding strip and arch breaking teeth, the sliding strip and the arch breaking teeth are respectively located on the two sides of the arch breaking plate, the sliding strip can slide in the sliding groove of the adjacent arch breaking plate, the sliding strip and the adjacent sliding groove can limit the two groups of arch breaking plates, the arch breaking teeth are in multiple groups and are uniformly distributed, and the top and the bottom of the arch breaking plate are provided with lug ears connected with the chain. The two groups of arch breaking plates are vertically slidably connected through cooperation of the sliding strip and the sliding groove, stability of the arch breaking plate in the movement process is ensured, the arch breaking teeth can be effectively inserted into the arching materials to destroy the arch structure and realize the arch breaking function.
[0015] In summary, the technical effects and advantages of the utility model are as follows:
[0016] 1. Efficient arch breaking: the top shaft and the bottom shaft are driven to rotate by the motor, two groups of arch breaking plates are reciprocatingly vertically moved, the arch breaking teeth on the arch breaking plate can be effectively inserted into the arching sand and stone materials to destroy the arch structure, the rotating drum leaf plate on the bottom shaft stirs the materials near the discharge port, efficient arch breaking is realized under the double action, and smooth discharge of sand and stone is ensured.
[0017] 2. Stable and reliable: the meshing transmission of the rack and the gear, the guidance and support of the rack sliding sleeve to the rack, and the friction force enhancement of the pressure roller to the chain and the driving I-shaped wheel ensure the stability and reliability of the whole device in the running process, and reduce equipment failure caused by problems such as part loosening and slipping.
[0018] 3. Simple structure: The overall structure of the device is simple, mainly composed of common mechanical transmission components, which is easy to manufacture, install and maintain, reducing the production cost and subsequent maintenance cost of the equipment.
[0019] 4. Safety and environmental protection: No manual entry is required inside the silo for arch breaking operations, avoiding the safety risks associated with manual arch breaking. At the same time, it reduces the damage to the silo structure caused by vibration devices, extends the service life of the silo, and has good safety and environmental protection features. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0022] Figure 2 This is a front view structural diagram of the present utility model;
[0023] Figure 3 This utility model Figure 2 A schematic diagram of the AA cross-sectional structure;
[0024] Figure 4 This utility model Figure 3 A magnified structural diagram at point B;
[0025] Figure 5 This is a schematic diagram of the right-side structure of this utility model;
[0026] Figure 6 This utility model Figure 5 A magnified structural diagram at point D;
[0027] Figure 7 This utility model Figure 5 Schematic diagram of CC cross-section structure;
[0028] Figure 8 This is a schematic diagram of the structure of the bottom shaft of this utility model;
[0029] Figure 9 This is a schematic diagram of the arch-breaking plate of this utility model.
[0030] In the figure: 1, support frame; 2, stock bin; 3, motor; 4, top shaft; 5, bottom shaft; 6, arch breaking plate; 7, chain; 10, mounting frame; 20, rack sliding sleeve; 21, material guide cover; 22, spring seat; 23, compression roller seat; 24, compression roller; 30, rotating arm; 31, connecting rod; 32, rack; 40, gear; 41, driving I-beam; 50, driven I-beam; 51, rotating drum; 60, chute; 61, sliding bar; 62, hanging lug; 63, arch breaking tooth piece. DETAILED DESCRIPTION
[0031] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0032] Embodiment: refer to Figures 1-9 The utility model discloses a kind of arching prevention devices of sand and gravel bin in mixing station, including support frame 1 and stock bin 2, support frame 1 top installs stock bin 2, support frame 1 is equipped with the mounting frame 10 located at one side of stock bin 2, and motor 3 is installed on mounting frame 10;Stock bin 2 top opening is transversely rotatably connected with top shaft 4, and motor 3 drives top shaft 4 reciprocating rotation;Stock bin 2 discharge port is transversely rotatably connected with bottom shaft 5;Top shaft 4 and bottom shaft 5 are equipped with arch breaking plate 6, arch breaking plate 6 has two groups and is mutually vertically slidably connected, and the top of two groups of arch breaking plate 6 and the bottom are all connected by chain 7, and upper chain 7 is around top shaft 4, and lower chain 7 is around bottom shaft 5.
[0033] As one of the embodiments in the embodiment, as shown in Figure 2 、 Figure 5 、 Figure 6 The end of top shaft 4 is equipped with gear 40, the outer wall of stock bin 2 is equipped with rack 32 slidably connected, rack 32 is engaged with gear 40, the output end of motor 3 is equipped with rotating arm 30, and the tail end of rotating arm 30 is hinged with rack 32 by connecting rod 31. After motor 3 starts, rotating arm 30 rotates around the output shaft of motor 3, and rack 32 is pulled to do reciprocating linear motion on the outer wall of stock bin 2 by connecting rod 31, and rack 32 drives gear 40 to rotate, so as to realize the reciprocating rotation of top shaft 4.
[0034] As one of the embodiments in the embodiment, as shown in Figure 2As shown, the outer wall of the bunker 2 is provided with two groups of symmetrical rack sleeves 20 distributed on the horizontal two sides of the gear 40, the bottom of the rack sleeve 20 is provided with a through slot, the rack 32 is slidingly connected in the rack sleeve 20, and the connecting seat at the bottom of the rack 32 slides in the through slot, thereby providing a stable track for the reciprocating movement of the rack 32.
[0035] As an embodiment in the present embodiment, in order to prevent slipping between the top shaft 4 and the chain 7, as shown in Figure 3 , Figure 4 , Figure 7 As shown, the top shaft 4 is provided with two groups of symmetrical driving I-shaped pulleys 41, the outer wall of the driving I-shaped pulley 41 is uniformly provided with anti-skid teeth, and the upper chain 7 is wound on the driving I-shaped pulley 41. The top of the bunker 2 is provided with a material guide cover 21, the bottom of the material guide cover 21 is provided with a spring seat 22 matched with the driving I-shaped pulley 41, a pressure roller seat 23 is slidingly connected in the spring seat 22, a spring is press-fitted between the spring seat 22 and the pressure roller seat 23, the bottom of the pressure roller seat 23 is rotatably connected with a pressure roller 24, and the pressure roller 24 is pressed against the chain 7 under the action of the spring, thereby increasing the friction between the chain 7 and the driving I-shaped pulley 41 and ensuring stable transmission.
[0036] As an embodiment in the present embodiment, in order to improve the arch breaking efficiency, as shown in Figure 3 , Figure 8 As shown, the bottom shaft 5 is provided with a driven I-shaped pulley 50 and a rotating drum 51, the lower chain 7 is wound on the driven I-shaped pulley 50, the outer wall of the driven I-shaped pulley 50 is also provided with anti-skid teeth, and the outer wall of the rotating drum 51 is uniformly provided with leaf plates. When the top shaft 4 rotates, one group of arch breaking plates 6 is driven upward by the upper chain 7, and the other group of arch breaking plates 6 is driven downward, at the same time, the bottom shaft 5 is driven to rotate by the lower chain 7, and the leaf plates on the rotating drum 51 stir the sand and stone materials near the discharge port; the arch breaking teeth insert into the materials to break the arch, and such reciprocating movement realizes the continuous and effective anti-arching function.
[0037] As an embodiment in the present embodiment, in order to improve the movement stability of the arch breaking plate 6, as shown in Figure 1 , Figure 7 , Figure 9 As shown, the arch breaking plate 6 is provided with a sliding groove 60, a sliding bar 61 and an arch breaking tooth 63, the sliding bar 61 and the arch breaking tooth 63 are respectively located on the two sides of the arch breaking plate 6, the sliding bar 61 can slide in the sliding groove 60 of the adjacent arch breaking plate 6, and the sliding bar 61 cooperates with the adjacent sliding groove 60 to limit the two groups of arch breaking plates 6, the top and bottom of the arch breaking plate 6 are provided with a lug 62 connected with the chain 7, thereby ensuring the stability and arch breaking effect of the arch breaking plate 6 during the movement.
[0038] The working principle of this utility model is as follows: When motor 3 is started, the output end of motor 3 drives the rotating arm 30 to start rotating. The end of the rotating arm 30 is hinged to the rack 32 through the connecting rod 31. During the rotation of the rotating arm 30, the rack 32 is pulled to make reciprocating linear motion in the rack sleeve 20 on the outer wall of the hopper 2. Since the rack 32 meshes with the gear 40 at one end of the top shaft 4, the linear motion of the rack 32 is converted into the rotational motion of the gear 40, which in turn drives the top shaft 4 to achieve reciprocating rotation.
[0039] When the top shaft 4 rotates, the driving I-beam wheel 41 on it rotates accordingly. The upper chain 7 is wound around the driving I-beam wheel 41. Due to the anti-slip teeth on the outer wall of the driving I-beam wheel 41 and the pressing action of the pressure roller 24, the chain 7 can move stably with the driving I-beam wheel 41. The guide cover 21 also protects the top shaft 4, preventing sand and gravel materials from directly impacting the top shaft 4. When the top shaft 4 rotates forward or backward, the upper chain 7 drives one set of arch-breaking plates 6 to move upward, while the other set of arch-breaking plates 6 moves downward. The two sets of arch-breaking plates 6 reciprocate in opposite directions, continuously breaking up the sand and gravel materials in the hopper 2.
[0040] During the movement of the arch-breaking plate 6, the two sets of arch-breaking plates 6 are vertically connected by the cooperation of the sliding strip 61 and the sliding groove 60 to ensure the stability of the movement. The arch-breaking teeth 63 evenly distributed on the arch-breaking plate 6 can insert into the arched sand and gravel material in the hopper 2 when the arch-breaking plate 6 moves up and down, destroying the arch structure and better achieving the purpose of arch breaking.
[0041] Meanwhile, the lower chain 7 is wound around the driven I-beam 50 of the bottom shaft 5. When the upper chain 7 drives the arch-breaking plate 6 to move, the lower chain 7 also moves accordingly, thereby driving the bottom shaft 5 to rotate. The rotating drum 51 on the bottom shaft 5 rotates together with the bottom shaft 5. The blades on the outer wall of the rotating drum 51 agitate the sand and gravel materials near the discharge port of the hopper 2, assisting in arch breaking and promoting smooth material discharge.
[0042] With the continuous operation of motor 3, the top shaft 4 and bottom shaft 5 reciprocate continuously, driving the arch-breaking plate 6 to move up and down continuously and the rotating drum 51 to stir continuously, thereby effectively breaking the arching phenomenon in the sand and gravel bin of the mixing plant, ensuring that the sand and gravel can flow out of the bin 2 smoothly, and maintaining the continuity and stability of the mixing plant's production.
[0043] The electromechanical connections involved in this utility model are common practices used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments; they are common knowledge.
[0044] Components not described in detail in this article are existing technologies.
[0045] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.
Claims
1. A device for preventing arching in a sand and gravel bin of a mixing plant, comprising a support frame (1) and a bin (2), said bin (2) being mounted on the top of said support frame (1), characterized in that, Also include: The motor (3), the support frame (1) is equipped with mounting frame (10), the mounting frame (10) is located in the side of the bunker (2), the mounting frame (10) is equipped with the motor (3); Top shaft (4), the top shaft (4) is transversely rotatably connected at the top of the bunker (2), the motor (3) drives the top shaft (4) reciprocating rotation; Bottom shaft (5), the bottom shaft (5) is transversely rotatably connected at the discharge port of the bunker (2); Arch breaking plate (6), the arch breaking plate (6) has two groups and is vertically slidably connected, the top of the two groups of the arch breaking plate (6) and the bottom are connected by the chain (7), the upper chain (7) is wound on the top shaft (4), the lower chain (7) is wound on the bottom shaft (5).
2. A device for preventing arching in a sand and gravel bin of a mixing plant according to claim 1, characterized in that: One end of the top shaft (4) is provided with a gear (40), the outer wall of the bunker (2) is provided with a slidingly connected rack (32), the rack (32) is engaged with the gear (40), the output end of the motor (3) is provided with a rotating arm (30), the end of the rotating arm (30) is hinged with the rack (32) through a connecting rod (31).
3. A device for preventing arching in a sand and gravel bin of a mixing plant according to claim 2, characterized in that: The outer wall of the bunker (2) is provided with a rack sleeve (20), the rack sleeve (20) has two groups and is symmetrically arranged on the horizontal two sides of the gear (40), the bottom of the rack sleeve (20) is provided with a through slot, the rack (32) is slidably connected in the rack sleeve (20), the bottom of the rack (32) is provided with a connecting seat for hinging the connecting rod (31), the connecting seat slides in the through slot.
4. A device for preventing arching in a sand and gravel bin of a mixing plant according to claim 1, characterized in that: The top shaft (4) is provided with a driving spool (41), the driving spool (41) has two groups and is symmetrically arranged, the outer wall of the driving spool (41) is uniformly provided with anti-skid teeth, and the upper chain (7) is wound on the driving spool (41).
5. A device for preventing arching in a sand and gravel bin of a mixing plant according to claim 4, characterized in that: The top of the bunker (2) is provided with a guide cover (21), the guide cover (21) covers the top of the top shaft (4), the bottom of the guide cover (21) is provided with a spring seat (22), the spring seat (22) has two groups and is matched with the driving spool (41), the spring seat (22) is slidably connected with a pressure roller seat (23), a spring is pressure assembled between the spring seat (22) and the pressure roller seat (23), the bottom of the pressure roller seat (23) is rotatably connected with a pressure roller (24), and the pressure roller (24) is used to increase the friction between the chain (7) and the driving spool (41).
6. A device for preventing arching in a sand and gravel bin of a mixing plant according to claim 1, characterized in that: The bottom shaft (5) is provided with a driven spool (50) and a rotating drum (51), the lower chain (7) is wound on the driven spool (50), the outer wall of the driven spool (50) is also uniformly provided with anti-skid teeth, and the outer wall of the rotating drum (51) is uniformly provided with a leaf plate.
7. A device for preventing arching in a sand and gravel bin of a mixing plant according to claim 1, characterized in that: The arch breaking plate (6) is provided with a sliding groove (60), a sliding strip (61) and an arch breaking tooth piece (63). The sliding strip (61) and the arch breaking tooth piece (63) are respectively located on both sides of the arch breaking plate (6). The sliding strip (61) can slide in the sliding groove (60) of the adjacent arch breaking plate (6). The sliding strip (61) and the adjacent sliding groove (60) cooperate to limit two groups of arch breaking plates (6). The arch breaking tooth piece (63) has multiple groups and is uniformly distributed. The top and the bottom of the arch breaking plate (6) are provided with a hanging ear (62) connected with the chain (7).