Concrete reclaimed sand preparation equipment

Abstract

The utility model discloses concrete reclaimed sand preparation equipment which comprises a shell, a crushing mechanism is arranged in the shell, the crushing mechanism comprises a plurality of groups of shaft seats, a rotating shaft, a mounting disc, a fixing rod, a mounting chain and a crushing hammer, and the shaft seats are mounted on two sides of the shell. The two sets of rotating shafts are rotationally installed on the multiple sets of shaft seats correspondingly, the multiple sets of installing discs are installed on the two sets of rotating shafts correspondingly, the multiple sets of fixing rods are installed on the multiple sets of installing discs correspondingly, and the multiple sets of installing chains are installed on the multiple sets of fixing rods correspondingly. And the multiple sets of crushing hammers are installed on the multiple sets of installation chains correspondingly, fixing mechanisms are arranged at the top ends of the multiple sets of fixing rods correspondingly, and each fixing mechanism comprises a fixing sleeve, a clamping block, a push rod, a clamping groove and a lock sleeve, so that the technical problems that in the background technology, the crushing effect is not uniform, and the maintenance difficulty of crushing equipment is large are solved.

Description

Technical Field

[0001] This utility model relates to the field of recycled concrete sand technology, and more specifically, to a recycled concrete sand preparation device. Background Technology

[0002] In existing technologies, crushing large pieces of waste concrete into smaller particles is a crucial step in the preparation of recycled concrete sand. However, many devices on the market currently have significant shortcomings in this step. These devices are often complex in structure, inconvenient to operate, and difficult to effectively handle concrete blocks of different sizes and hardness. During the crushing process, problems such as material jamming and blockage often occur, resulting in uneven crushing effects and large differences in particle size. In addition, the crushing efficiency of these devices is generally low and cannot meet the needs of large-scale recycled sand production. This not only prolongs the production cycle but also increases energy consumption and operating costs, seriously affecting the economic benefits of concrete recycling.

[0003] Another prominent problem is the difficulty in maintaining existing crushing equipment. During long-term use, key components such as crushing blades and hammers will wear or be damaged. However, many equipment designs do not fully take this into account. Replacing these components often requires a complex disassembly process, which is time-consuming and labor-intensive. This not only increases maintenance costs but also prolongs equipment downtime. More seriously, due to the inconvenience of replacement, many operators often delay necessary maintenance and continue to use worn parts. This directly leads to a continuous decline in crushing efficiency, which not only affects product quality but may also cause further damage to the equipment and shorten its service life. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the problems existing in the prior art, this utility model provides a concrete recycled sand preparation equipment to solve the technical problems mentioned in the background art, such as uneven crushing effect and high maintenance difficulty of crushing equipment.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a concrete recycled sand preparation device, comprising a shell, a crushing mechanism disposed within the shell, the crushing mechanism comprising a bearing seat, a rotating shaft, a mounting plate, a fixing rod, a mounting chain, and a breaker hammer, wherein multiple sets of bearing seats are disposed on both sides of the shell, two sets of rotating shafts are respectively rotatably mounted on multiple sets of bearing seats, multiple sets of mounting plates are respectively mounted on two sets of rotating shafts, multiple sets of fixing rods are respectively mounted on multiple sets of mounting plates, multiple sets of mounting chains are respectively mounted on multiple sets of fixing rods, multiple sets of breaker hammers are respectively mounted on multiple sets of mounting chains, and a fixing mechanism is disposed at the top of each set of fixing rods, the fixing mechanism comprising a fixing sleeve, a snap-fit ​​block, a push rod, a snap-fit ​​groove, and a locking sleeve, the fixing sleeve being disposed at the top of the multiple sets of fixing rods, multiple sets of snap-fit ​​blocks being disposed inside the fixing sleeve, the push rod being disposed at the top of the multiple sets of snap-fit ​​blocks and slidably mounted on the fixing sleeve, the snap-fit ​​groove being disposed on the outer wall of the top of the multiple sets of fixing rods, and the locking sleeve being disposed on the outer side of the fixing sleeve.

[0008] The present invention is further configured such that a motor is installed on one set of the shaft seats, the output end of the motor is fixedly connected to one set of the rotating shafts, a transmission wheel is installed on both sets of the shaft seats, a transmission belt is provided on both sets of the transmission wheels, and the transmission belt is provided with multiple sets sleeved on the outer wall of the two sets of the transmission wheels. This design realizes the synchronous rotation of the two shafts and ensures the uniformity of the crushing process.

[0009] The present invention is further configured such that a feeding hopper is installed on the top surface of the outer shell, and a distributing plate is installed inside the feeding hopper. The distributing plate is installed at an angle. The design of the feeding hopper facilitates the input of materials and improves the convenience of operation.

[0010] The present invention is further configured such that each of the multiple sets of snap-fit ​​blocks and the fixing sleeve is connected with a push spring, the push spring enabling the snap-fit ​​blocks to automatically return to their original position, thereby increasing the flexibility and reliability of the fixing mechanism.

[0011] The present invention is further configured such that each of the multiple sets of fixing rods is provided with a positioning rod at its top, and each of the fixing sleeves has a positioning hole on its inner top surface. This design greatly improves the accuracy and stability of the fixing rod installation.

[0012] The present invention is further configured such that a compression spring is installed at the top end of the fixed sleeve, and a pressure plate is installed at the bottom end of the compression spring. This design not only improves the operational stability of the equipment, but also extends the service life of each component.

[0013] The present invention is further configured such that an auxiliary mechanism is provided on the outside of the fixed sleeve. The auxiliary mechanism includes a control sleeve, an internal gear ring, screws, gears, an annular groove, limiting blocks, and limiting grooves. The control sleeve is rotatably mounted on the outside of the fixed sleeve. The internal gear ring is mounted on the bottom end of the control sleeve. Multiple sets of screws are provided, all of which are rotatably mounted on the fixed sleeve and threadedly connected to the locking sleeve. The gears are mounted on the tops of the multiple sets of screws and mesh with the internal gear rings. The annular groove is provided inside the control sleeve. Multiple sets of limiting blocks are provided, all of which are slidably mounted on the control sleeve and whose tops extend into the annular grooves. Multiple sets of limiting grooves are provided on the outer wall of the fixed sleeve and are adapted to the multiple sets of limiting blocks. This multi-stage transmission design achieves precise control of the locking sleeve position.

[0014] The present invention is further configured such that the top of each of the multiple sets of limiting blocks is connected to the inner wall of the annular groove by a connecting spring. This design not only simplifies the operation process, but also improves the response speed and accuracy of the entire control mechanism.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, the present invention provides a concrete recycled sand preparation device, which has the following beneficial effects:

[0017] 1. The crushing mechanism is driven by a motor to rotate the shaft, and the transmission wheel and transmission belt are used to achieve synchronous operation of the two shafts, ensuring the uniformity and stability of the crushing process. The design of multiple sets of mounting plates and fixing rods increases the number and distribution of the crushing hammers, improving crushing efficiency. The use of mounting chains gives the crushing hammers a certain degree of flexibility, which can better adapt to concrete blocks of different sizes and hardnesses. The design of the feed hopper and distribution plate ensures the uniform distribution of materials, further improving crushing efficiency. This structural design not only improves the crushing capacity of the equipment, but also reduces the load on individual crushing hammers and extends the service life of the equipment.

[0018] 2. The fixing mechanism adopts a combination design of fixing sleeve, snap-fit ​​block, push rod, snap-fit ​​groove and locking sleeve, which realizes quick installation and disassembly of fixing rod. The setting of positioning rod and positioning hole ensures accurate positioning of fixing rod and improves installation accuracy. The use of push spring allows snap-fit ​​block to return to its original position automatically, increasing the convenience of operation. The design of compression spring and pressure plate further enhances the stability of fixing and reduces vibration and loosening during operation. This design greatly simplifies the process of maintaining and replacing breaker hammer, reduces downtime and improves the overall efficiency of equipment.

[0019] 3. The auxiliary mechanism, through a combination of control sleeve, internal gear ring, screw, and gears, precisely converts rotational motion into the up-and-down movement of the locking sleeve. This design allows operators to precisely control the position of the locking sleeve, thereby better adjusting the locking degree of the fixing mechanism. The setting of annular groove, limit block, and limit groove enables precise positioning of the control sleeve, and the connecting spring ensures that the limit block can automatically return to its original position, increasing the accuracy and reliability of operation. This refined control not only improves the reliability of the fixing mechanism but also increases the adaptability of the equipment, enabling adjustments according to different working conditions and material properties, further improving the working efficiency of the equipment and product quality. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a concrete recycled sand preparation device according to the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the transmission wheel and transmission belt in this utility model;

[0022] Figure 3 This is a schematic diagram of the crushing mechanism in this utility model;

[0023] Figure 4 This is a schematic diagram of the connection structure between the fixed cover and the breaker hammer in this utility model;

[0024] Figure 5 This is a cross-sectional view of the fixing mechanism in this utility model;

[0025] Figure 6 This is a cross-sectional view of the fixing sleeve in this utility model;

[0026] Figure 7 This is a cross-sectional view of the auxiliary mechanism in this utility model.

[0027] In the diagram: 1. Outer shell; 2. Shaft seat; 3. Rotating shaft; 4. Mounting plate; 5. Fixing rod; 6. Mounting chain; 7. Breaker hammer; 8. Fixing sleeve; 9. Snap-fit ​​block; 10. Push rod; 11. Snap-fit ​​groove; 12. Locking sleeve; 13. Motor; 14. Transmission wheel; 15. Transmission belt; 16. Feed hopper; 17. Distributor plate; 18. Push spring; 19. Positioning rod; 20. Positioning hole; 21. Compression spring; 22. Pressure plate; 23. Control sleeve; 24. Internal gear ring; 25. Screw; 26. Gear; 27. Annular groove; 28. Limiting block; 29. ​​Limiting groove; 30. Connecting spring. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0030] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0031] Please see Figures 1-7 A concrete recycled sand preparation device includes a shell 1, and a crushing mechanism is provided inside the shell 1. The crushing mechanism includes a bearing seat 2, a rotating shaft 3, a mounting plate 4, a fixing rod 5, a mounting chain 6, and a breaker hammer 7. Multiple sets of bearing seats 2 are installed on both sides of the shell 1. Two sets of rotating shafts 3 are rotatably installed on multiple sets of bearing seats 2. Multiple sets of mounting plates 4 are installed on two sets of rotating shafts 3. Multiple sets of fixing rods 5 are installed on multiple sets of mounting plates 4. Multiple sets of mounting chains 6 are installed on multiple sets of fixing rods 5. Multiple sets of breaker hammers 7 are installed on multiple sets of mounting chains 6. Each set of fixing rods 5 has a fixing mechanism at its top. The fixing mechanism includes a fixing sleeve 8, a snap-fit ​​block 9, a push rod 10, a snap-fit ​​groove 11, and a locking sleeve 12. The fixing sleeve 8 is located at the top of the multiple sets of fixing rods 5. Multiple sets of snap-fit ​​blocks 9 are located inside the fixing sleeve 8. The push rod 10 is installed at the top of the multiple sets of snap-fit ​​blocks 9 and slidably installed on the fixing sleeve 8. The snap-fit ​​groove 11 is located on the outer wall of the top of the multiple sets of fixing rods 5. The locking sleeve 12 is located on the outer side of the fixing sleeve 8.

[0032] A motor 13 is mounted on a set of bearing seats 2. The output end of the motor 13 is fixedly connected to a set of rotating shafts 3. Both sets of bearing seats 2 are equipped with drive wheels 14, and each set of drive wheels 14 has a drive belt 15. Multiple sets of drive belts 15 are fitted onto the outer walls of the two sets of drive wheels 14. The motor 13 drives one set of rotating shafts 3 to rotate, transmitting power to the other set of rotating shafts 3 through the drive wheels 14 and drive belts 15. The use of multiple sets of drive belts 15 increases the stability and reliability of the transmission, reduces the load on a single drive belt, and extends the service life of the equipment. The use of the motor 13 enables automated operation and improves work efficiency.

[0033] A feed hopper 16 is installed on the top surface of the outer shell 1, and a distribution plate 17 is installed inside the feed hopper 16. The distribution plate 17 is installed at an angle. The feed hopper 16 introduces the material into the equipment, and the distribution plate 17 evenly disperses the material. The angled installation design of the distribution plate 17 ensures that the material is evenly distributed when entering the crushing area, avoids local overload, and improves crushing efficiency and product quality consistency.

[0034] Each of the multiple sets of snap-fit ​​blocks 9 and the fixing sleeve 8 is connected by a push spring 18. The push spring 18 connects the snap-fit ​​blocks 9 and the fixing sleeve 8, providing a return force. The push spring 18 enables the snap-fit ​​blocks 9 to return automatically, increasing the flexibility and reliability of the fixing mechanism.

[0035] Each of the multiple sets of fixing rods 5 has a positioning rod 19 at its top, and a positioning hole 20 is opened on the inner top surface of the fixing sleeve 8. The positioning rod 19 is inserted into the positioning hole 20 to ensure the correct position of the fixing rod 5. The cooperation between the positioning rod 19 and the positioning hole 20 not only simplifies the installation process, but also ensures the consistency of each installation, which is conducive to maintaining the long-term stable operation of the equipment and the consistency of product quality.

[0036] A compression spring 21 is installed at the top of the fixed sleeve 8, and a pressure plate 22 is installed at the bottom of the compression spring 21. The compression spring 21 and the pressure plate 22 apply additional pressure to the fixed rod 5. The compression spring 21 provides continuous pressure, while the pressure plate 22 distributes this pressure evenly, which together reduces vibration and loosening during operation.

[0037] In this embodiment, the crushing mechanism drives a set of rotating shafts 3 to rotate via motor 13. This, in turn, drives another set of rotating shafts 3 to rotate synchronously via transmission wheel 14 and transmission belt 15. Multiple mounting discs 4 are fixed to the rotating shafts 3, causing the fixed rod 5 to rotate. The mounting chain 6 installed on the fixed rod 5 swings accordingly, driving the breaker hammer 7 to move at high speed. When concrete blocks enter the crushing area through the feed hopper 16, the high-speed rotating breaker hammer 7 impacts and shears them, achieving the crushing effect. The distribution plate 17 ensures uniform material distribution and improves crushing efficiency. When the fixed rod 5 needs to be installed, it is inserted into the fixing sleeve 8, and the positioning rod 19 enters the positioning hole 20 to ensure the correct position. The locking sleeve 12 is raised by the auxiliary mechanism, allowing the locking block 9 to enter the locking groove 11 under the abutment of the locking sleeve 12, locking the fixed rod 5. The compression spring 21 and pressure plate 22 further increase the stability of the fixation. During disassembly, the locking sleeve 12 is lowered by the auxiliary mechanism, causing the locking block 9 to disengage from the locking groove 11, allowing the fixed rod 5 to be removed. This design facilitates equipment maintenance and replacement of the breaker hammer 7.

[0038] Please see Figure 7As one implementation of the auxiliary mechanism: an auxiliary mechanism is provided on the outside of the fixed sleeve 8. The auxiliary mechanism includes a control sleeve 23, an internal gear ring 24, a screw 25, a gear 26, an annular groove 27, a limiting block 28, and a limiting groove 29. The control sleeve 23 is rotatably mounted on the outside of the fixed sleeve 8. The internal gear ring 24 is mounted on the bottom end of the control sleeve 23. Multiple sets of screws 25 are provided and are rotatably mounted on the fixed sleeve 8 and threadedly connected to the locking sleeve 12. The gear 26 is mounted on the top of the multiple sets of screws 25 and meshes with the internal gear ring 24. The annular groove 27 is provided inside the control sleeve 23. Multiple sets of limiting blocks 28 are provided and are slidably mounted on the control sleeve 23 with their tops extending into the annular groove 27. Multiple sets of limiting grooves 29 are provided on the outer wall of the fixed sleeve 8 and are adapted to the multiple sets of limiting blocks 28. This multi-stage transmission design realizes precise control of the position of the locking sleeve 12. The setting of the annular groove 27, the limiting block 28, and the limiting groove 29 provides a precise positioning function and increases the accuracy of operation.

[0039] The top of each set of limiting blocks 28 is connected to the inner wall of the annular groove 27 by a connecting spring 30. The use of the connecting spring 30 ensures that the limiting blocks 28 can automatically return to their original position, increasing the sensitivity and reliability of the positioning mechanism.

[0040] More specifically, the auxiliary mechanism precisely controls the position of the locking sleeve 12 by rotating the control sleeve 23. When the control sleeve 23 rotates, the internal gear ring 24 at the bottom drives the gears 26 on multiple sets of screws 25 to rotate. The screws 25 are threadedly connected to the locking sleeve 12, thereby converting the rotational motion into the up-and-down movement of the locking sleeve 12. The setting of the annular groove 27, the limiting block 28 and the limiting groove 29 enables the precise positioning of the control sleeve 23. The connecting spring 30 ensures that the limiting block 28 can automatically return to its original position. This design allows the operator to precisely control the position of the locking sleeve 12, thereby better adjusting the locking degree of the fixing mechanism.

[0041] In summary, during operation or use of the overall equipment: the crushing mechanism drives a set of rotating shafts 3 to rotate via motor 13, which in turn drives another set of rotating shafts 3 to rotate synchronously via transmission wheel 14 and transmission belt 15. Multiple mounting discs 4 are fixed on the rotating shafts 3, driving the fixed rods 5 to rotate. The mounting chains 6 installed on the fixed rods 5 swing accordingly, driving the breaker hammers 7 to move at high speed. When concrete blocks enter the crushing area through the feed hopper 16, the high-speed rotating breaker hammers 7 impact and shear them, achieving the crushing effect. The distribution plate 17 ensures the uniform distribution of materials, improving efficiency and efficiency. The crushing efficiency is improved. When the fixing rod 5 needs to be installed, it is inserted into the fixing sleeve 8, and the positioning rod 19 enters the positioning hole 20 to ensure the correct position. The locking sleeve 12 is raised by the auxiliary mechanism, so that the locking block 9 enters the locking groove 11 under the action of the locking sleeve 12, locking the fixing rod 5. The setting of the compression spring 21 and the pressure plate 22 further increases the stability of the fixation. When disassembling, the locking sleeve 12 is lowered by the auxiliary mechanism, so that the locking block 9 is disengaged from the locking groove 11, and the fixing rod 5 can be taken out. This design facilitates the maintenance of the equipment and the replacement of the breaker hammer 7.

[0042] The auxiliary mechanism precisely controls the position of the locking sleeve 12 by rotating the control sleeve 23. When the control sleeve 23 rotates, the internal gear ring 24 at the bottom drives the gears 26 on the multiple sets of screws 25 to rotate. The screws 25 are threadedly connected to the locking sleeve 12, thereby converting the rotational motion into the up and down movement of the locking sleeve 12. The setting of the annular groove 27, the limiting block 28 and the limiting groove 29 realizes the precise positioning of the control sleeve 23. The connecting spring 30 ensures that the limiting block 28 can automatically return to its original position. This design allows the operator to precisely control the position of the locking sleeve 12, thereby better adjusting the locking degree of the fixing mechanism.

[0043] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A concrete recycling sand production plant comprising a housing (1), characterised in that: The shell (1) is provided with a crushing mechanism, the crushing mechanism includes shaft seat (2), rotating shaft (3), mounting disc (4), fixed rod (5), mounting chain (6) and breaking hammer (7), the shaft seat (2) is provided with a plurality of groups of installation on both sides of the shell (1), the rotating shaft (3) is provided with two groups of rotating installation on the plurality of shaft seats (2) respectively, the mounting disc (4) is provided with a plurality of groups of installation on the two rotating shafts (3) respectively, the fixed rod (5) is provided with a plurality of groups of installation on the plurality of mounting discs (4) respectively, the mounting chain (6) is provided with a plurality of groups of installation on the plurality of fixed rods (5) respectively, the breaking hammer (7) is provided with a plurality of groups of installation on the plurality of mounting chains (6) respectively, the top end of the plurality of fixed rods (5) is provided with a fixing mechanism, the fixing mechanism includes fixing sleeve (8), clamping block (9), push rod (10), clamping groove (11) and lock sleeve (12), the fixing sleeve (8) is arranged at the top end of the plurality of fixed rods (5), the clamping block (9) is provided with a plurality of groups arranged in the inner side of the fixing sleeve (8), the push rod (10) is installed at the top end of the plurality of clamping blocks (9) and is slidingly installed on the fixing sleeve (8), the clamping groove (11) is arranged on the outer wall of the top end of the plurality of fixed rods (5), and the lock sleeve (12) is arranged on the outer side of the fixing sleeve (8).

2. The concrete recycling sand manufacturing apparatus according to claim 1, characterized by: A group of the shaft seat (2) is provided with a motor (13), the output end of the motor (13) is fixedly connected with a group of the rotating shaft (3), two groups of the shaft seat (2) are provided with a transmission wheel (14), two groups of the transmission wheel (14) are provided with a transmission belt (15), and the transmission belt (15) is provided with a plurality of groups of sleeves on the outer wall of the two groups of transmission wheels (14).

3. The concrete recycling sand manufacturing apparatus according to claim 2, characterized by: The top surface of the shell (1) is provided with a feeding hopper (16), the feeding hopper (16) is provided with a distribution plate (17), and the distribution plate (17) is inclinedly installed.

4. The concrete recycling sand manufacturing apparatus according to claim 3, characterized by: The push spring (18) is connected between the plurality of clamping blocks (9) and the fixing sleeve (8).

5. The concrete recycling sand production apparatus according to claim 4, wherein the plurality of groups of the plurality of impactors are arranged in a plurality of rows. The top end of the fixed rod (5) is provided with a positioning rod (19), and the inner top surface of the fixing sleeve (8) is provided with a positioning hole (20).

6. The apparatus according to claim 5, wherein: The inner top end of the fixing sleeve (8) is provided with a compression spring (21), and the bottom end of the compression spring (21) is provided with a pressing plate (22).

7. The apparatus according to claim 6, wherein: The fixed sleeve (8) is externally provided with an auxiliary mechanism, the auxiliary mechanism comprises a control sleeve (23), an inner tooth ring (24), screw rods (25), gears (26), an annular groove (27), limiting blocks (28) and limiting grooves (29), the control sleeve (23) is rotatably installed on the outside of the fixed sleeve (8), the inner tooth ring (24) is installed at the bottom end of the control sleeve (23), the screw rods (25) are provided in multiple groups and are rotatably installed on the fixed sleeve (8) and are in threaded connection with the lock sleeve (12), the gears (26) are installed at the top ends of the multiple groups of screw rods (25) and are in engagement with the inner tooth ring (24), the annular groove (27) is arranged in the control sleeve (23), the limiting blocks (28) are provided in multiple groups and are slidably installed on the control sleeve (23) and have top ends extending into the annular groove (27), and the limiting grooves (29) are provided in multiple groups and are arranged on the outer wall of the fixed sleeve (8) and are matched with the multiple groups of limiting blocks (28).

8. The concrete recycling sand production apparatus according to claim 7, wherein the plurality of groups of the plurality of impactors are arranged in a plurality of rows. The top end of the limiting block (28) and the inner wall of the annular groove (27) are both connected with a connecting spring (30).

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