Hammer crusher for recycled aggregate

Abstract

The invention discloses a hammer crusher for recycled aggregate, and belongs to the technical field of hammer crushers. The impact crusher comprises a crusher shell, a plurality of hammer heads are arranged in the crusher shell, an impact lining plate is arranged on the inner surface of the crusher shell, a step opening corresponding to the impact lining plate in position is formed in the outer portion of the crusher shell, a mounting plate is mounted on the surface of the impact lining plate through screws, and the mounting plate is located in the step opening; long strip blocks which are symmetrically arranged are arranged on the two sides of the opening, a plurality of fixing plates are movably installed between the two long strip blocks, pressing plates are movably connected to the lower portions of the fixing plates, the bottoms of the pressing plates make contact with the surface of the installation plate, screw pipes are installed on the surfaces of the fixing plates in a penetrating mode, and fastening screw rods are installed in the screw pipes in a threaded mode. The step opening corresponding to the counterattack lining plate in position is formed in the surface of the box body, when the counterattack lining plate needs to be taken out, only the counterattack lining plate needs to be taken out from the step opening, disassembly and assembly operation is convenient, and operation convenience is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of hammer crushers, and particularly to a hammer crusher for recycled aggregates. Background Art

[0002] Recycled aggregates refer to miscellaneous fill soil that has undergone several sieving and processing by a crushing machine to become small-particle recycled aggregates. The crushing machine is usually a hammer crusher, a jaw crusher, a counterattack crusher, etc. Among them, the hammer crusher is composed of a box body, a rotating shaft, a hammer head, a counterattack lining plate, a sieve hole or a sieve plate. The counterattack lining plate is usually fixed to the inner surface of the box body by screws. As a result, during the removal or installation of the counterattack lining plate, the staff still needs to disassemble the side plates of the box body in sequence and then disassemble and install the counterattack lining plate, or reach into the interior of the box body through the feed inlet for installation. For the above two disassembly and installation operation methods of the counterattack lining plate, the former increases the operation steps and intensity, while the latter operation method is not conducive to the staff's body movement due to the limited space and light in the box body, reducing the operation convenience. Therefore, both operation methods are not conducive to the disassembly and installation operation of the counterattack lining plate. Summary of the Invention

[0003] The purpose of the present invention is to provide a hammer crusher for recycled aggregates. By providing a stepped opening corresponding to the position of the counterattack lining plate on the surface of the box body, when it is necessary to remove the counterattack lining plate, the counterattack lining plate can be simply taken out from the stepped opening, without the need to disassemble the box body or reach into the box body for operation, facilitating the disassembly and installation operation of the counterattack lining plate and improving the operation convenience, so as to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solution:

[0005] A hammer crusher for recycled aggregates includes a crusher housing. Inside the crusher housing, there are multiple hammer heads. On the inner surface of the crusher housing, there is a counterattack lining plate. On the outer surface of the crusher housing, there is a stepped opening corresponding to the position of the counterattack lining plate. On the surface of the counterattack lining plate, a mounting plate is installed by screws. The mounting plate is located in the stepped opening. On both sides of the opening, there are symmetrically arranged long blocks. Between the two long blocks, multiple fixing plates are movably installed. Below the fixing plates, there is a movable connection with a pressing plate. The bottom of the pressing plate contacts the surface of the mounting plate. Through the surface of the fixing plate, a screw tube is penetrated. Inside the screw tube, a fastening screw is threadedly installed. One end of the fastening screw contacts the top of the pressing plate. A limiting mechanism is provided between the pressing plate and the two long blocks.

[0006] Preferably, the limiting mechanism includes four first mounting blocks and two arc-shaped racks. The two arc-shaped racks are respectively mounted on the tops of the two long blocks by screws. The four first mounting blocks are respectively mounted on both ends of the pressing plate by screws. One ends of the four first mounting blocks are bent, and one ends of the four first mounting blocks respectively extend above the two arc-shaped racks. Limiting tooth blocks are mounted on the bent ends of the four first mounting blocks by screws, and the four limiting tooth blocks are respectively inserted into the tooth grooves of the two arc-shaped racks.

[0007] Preferably, a plurality of movable rods are penetrated and installed on the surfaces of the fixed plates. One ends of the movable rods are mounted on the top of the pressing plate by screws. Blocks are mounted on the top ends of the movable rods by screws. Compression springs are movably sleeved on the surfaces of the movable rods. Both ends of the compression springs are respectively mounted on the surfaces of the blocks and the fixed plates by screws.

[0008] Preferably, second mounting blocks are mounted on both ends of the fixed plates by screws. Limiting rods are mounted on the surfaces of the two second mounting blocks by screws. Chute grooves are formed on the sides of the two long blocks, and one ends of the two limiting rods are respectively slidably inserted into the two chute grooves.

[0009] Preferably, a rotating shaft is provided inside the crusher housing. Both ends of the rotating shaft are penetrated and installed on two symmetrical sides of the crusher housing through bearings. A plurality of equally spaced hammer mounting seats are fixedly sleeved on the surface of the rotating shaft. A plurality of hammers are respectively mounted on the sides of the plurality of hammer mounting seats by screws. A driving motor is provided on one side of the crusher housing. Driving wheels are fixedly sleeved on the movable end of the driving motor and one end of the rotating shaft respectively, and a plurality of transmission belts are sleeved between the two driving wheels.

[0010] Preferably, a base bracket is mounted on the bottom of the crusher housing by screws, and the driving motor is mounted on the top of the base bracket by screws.

[0011] Preferably, a feed inlet is formed on the top of the crusher housing, and a plurality of sieve holes arranged in a matrix are formed on the bottom of the crusher housing.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] (1) By providing a stepped opening corresponding to the position of the impact lining plate on the surface of the box body in the present invention, when it is necessary to take out the impact lining plate, the impact lining plate can be taken out from the stepped opening only, without disassembling the box body or reaching into the box body for operation, which facilitates the disassembly and assembly operation of the impact lining plate and improves the convenience of operation.

[0014] (2) In the present invention, by rotating the fastening screw rod to push the pressing plate against the top of the mounting plate, the bottom of the mounting plate contacts the surface of the stepped opening, which is used to maintain the stability of the position of the impact liner, prevent the position of the impact liner from shifting after being impacted by the aggregate, and improve the stability of the impact liner during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present invention;

[0016] Figure 2 is a schematic diagram of the internal structure of the crusher housing of the present invention;

[0017] Figure 3 is a schematic diagram of the crusher housing structure of the present invention;

[0018] Figure 4 is a schematic diagram of the connection structure between the impact liner and the mounting plate of the present invention;

[0019] Figure 5 is a schematic diagram of the connection structure between the fixing plate and the pressing plate of the present invention.

[0020] In the figure: crusher housing 1, drive belt 2, drive wheel 3, base bracket 4, drive motor 5, stepped opening 6, fixing plate 7, mounting plate 8, arc rack 9, hammer head 10, hammer head mounting seat 11, sieve hole 12, rotating shaft 13, long strip 14, impact liner 15, screw tube 16, fastening screw rod 17, first mounting block 18, chute 19, stop block 20, compression spring 21, movable rod 22, pressing plate 23, limiting rod 24, limiting tooth block 25, second mounting block 26. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1-5, this embodiment provides the following technical solution: A hammer crusher for recycled aggregates, comprising a crusher housing 1, inside which there are multiple hammers 10. An impact liner 15 is provided on the inner surface of the crusher housing 1. A stepped opening 6 corresponding to the position of the impact liner 15 is formed on the outside of the crusher housing 1. An installation plate 8 is mounted on the surface of the impact liner 15 by screws. The installation plate 8 is located in the stepped opening 6. On both sides of the opening, there are symmetrically arranged long blocks 14. A plurality of fixing plates 7 are movably installed between the two long blocks 14. A pressing plate 23 is movably connected below the fixing plate 7. The bottom of the pressing plate 23 contacts the surface of the installation plate 8. A screw tube 16 is penetrated through the surface of the fixing plate 7. A fastening screw 17 is threadedly installed inside the screw tube 16. One end of the fastening screw 17 contacts the top of the pressing plate 23. A limiting mechanism is provided between the pressing plate 23 and the two long blocks 14.

[0023] When removing the impact liner 15, first rotate the fastening screw 17. The fastening screw 17 moves spirally in the screw tube 16. After one end of the fastening screw 17 moves away from the pressing plate 23, the pressing plate 23 drives the pressing plate 23 to separate from the installation plate 8 by the elastic potential energy of the compression spring 21. At the same time, the limiting tooth block 25 leaves the tooth groove of the arc-shaped rack 9. At this time, the fixing plate 7 can be pushed. After the fixing plate 7 is stressed, it drives the two limiting rods 24 to slide in the two sliding grooves 19. After the position between the pressing plate 23 and the installation plate 8 is staggered, there is no obstacle in the moving direction when the installation plate 8 separates from the crusher housing 1, which facilitates the staff to take out the impact liner 15 from the inside of the crusher housing 1 by taking out the installation plate 8, improving the convenience of operation; when installing the impact liner 15, just operate the installation plate 8 to move into the stepped opening 6. At this time, the impact liner 15 is located in the crusher housing 1. Then operate the fixing plate 7 to move to the position corresponding to the installation plate 8, and then rotate the fastening screw 17 in the reverse direction. The fastening screw 17 drives the pressing plate 23 to press on the installation plate 8. At this time, the installation plate 8 is limited by the pressing plate 23 and the stepped opening 6, improving the stability of the position where the impact liner 15 is located. During the process of the pressing plate 23 moving towards the installation plate 8, the pressing plate 23 drives the limiting tooth block 25 to insert into the tooth groove of the arc-shaped rack 9 to fix the position of the pressing plate 23, improving the stability of the impact liner 15 in the crusher housing 1 after being stressed.

[0024] The limiting mechanism includes four first mounting blocks 18 and two arc-shaped racks 9. The two arc-shaped racks 9 are respectively mounted on the tops of two long blocks 14 by screws. The four first mounting blocks 18 are respectively mounted on both ends of the pressing plate 23 by screws. One end of the four first mounting blocks 18 is bent. One ends of the four first mounting blocks 18 respectively extend above the two arc-shaped racks 9. Limiting tooth blocks 25 are mounted on the bent ends of the four first mounting blocks 18 by screws. The four limiting tooth blocks 25 are respectively inserted into the tooth grooves of the two arc-shaped racks 9. When the pressing plate 23 is forced to move downward, the pressing plate 23 drives the four first mounting blocks 18 to move synchronously. After the bottom of the pressing plate 23 presses on the top of the mounting plate 8, the four first mounting blocks 18 drive the limiting tooth blocks 25 to be inserted into the tooth grooves of the two arc-shaped racks 9, improving the stability of the position where the fixing plate 7 is located.

[0025] A plurality of movable rods 22 are installed through the surface of the fixing plate 7. One end of the movable rod 22 is mounted on the top of the pressing plate 23 by a screw. A stop block 20 is mounted on the top end of the movable rod 22 by a screw. A compression spring 21 is movably sleeved on the surface of the movable rod 22. Both ends of the compression spring 21 are respectively mounted on the surfaces of the stop block 20 and the fixing plate 7 by screws. When the pressing plate 23 is forced to move downward, the pressing plate 23 drives the plurality of movable rods 22 to move synchronously, preventing the fixing plate 7 from shifting in position when moving. At the same time, the plurality of movable rods 22 apply pressure to the plurality of compression springs 21 through the plurality of stop blocks 20, and the length of the compression spring 21 shrinks when it is stressed; when the pressing plate 23 is not affected by an external force, the compression spring 21 reversely pushes the stop block 20 through its own elastic potential energy, and the stop block 20 reversely pulls the pressing plate 23 away from the mounting plate 8 through the movable rod 22, facilitating the disassembly and assembly operation of the impact liner 15.

[0026] Second mounting blocks 26 are mounted on both ends of the fixing plate 7 by screws. Limiting rods 24 are mounted on the surfaces of the two second mounting blocks 26 by screws. Chute grooves 19 are formed on the sides of the two long blocks 14. One ends of the two limiting rods 24 are respectively slidably inserted into the two chute grooves 19. Both ends of the fixing plate 7 slide in the two chute grooves 19 through the limiting rods 24. When the impact liner 15 is forced to push the fixing plate 7, the fixing plate 7 is limited by the two chute grooves 19 through the two limiting rods 24, improving the stability of the position where the impact liner 15 is located after being stressed. The chute groove 19 extends to one side of the step opening 6, facilitating the fixing plate 7 to slide to one side of the step opening 6 through the limiting rod 24 in the chute groove 19, facilitating the disassembly operation of the impact liner 15.

[0027] Inside the crusher housing 1, there is a rotating shaft 13. Both ends of the rotating shaft 13 are installed through bearings on two symmetric sides of the crusher housing 1. On the surface of the rotating shaft 13, a plurality of equally spaced hammer mounting seats 11 are fixedly sleeved. A plurality of hammers 10 are respectively installed on the sides of the plurality of hammer mounting seats 11 by screws. On one side of the crusher housing 1, there is a driving motor 5. On the movable end of the driving motor 5 and one end of the rotating shaft 13, transmission wheels 3 are fixedly sleeved. A plurality of transmission belts 2 are sleeved between the two transmission wheels 3. After the driving motor 5 is powered on, its movable end rotates. The driving motor 5 drives the rotating shaft 13 to rotate in the crusher housing 1 through the two transmission wheels 3 and the plurality of transmission belts 2. The rotating shaft 13 drives the plurality of hammer mounting seats 11 to rotate synchronously, and the hammer mounting seats 11 drive the plurality of hammers 10 to rotate synchronously. During the rotation process, the plurality of hammers 10 drive the aggregate to move synchronously, so that the aggregate rolls frictionally along the inner surface of the crusher housing 1 and the surface of the impact liner 15 after being stressed, for the crushing treatment of the aggregate. For the crushed aggregate, the aggregate that can pass through the sieve holes 12 drops, and the aggregate that fails to pass through the sieve holes 12 is continuously driven by the hammers 10 for further friction crushing treatment.

[0028] The bottom of the crusher housing 1 is installed with a base bracket 4 by screws. The driving motor 5 is installed on the top of the base bracket 4 by screws. The base bracket 4 plays a role in supporting the crusher housing 1 and the driving motor 5, and at the same time improves the stability of the hammer crusher placed on the ground. An inlet is opened at the top of the crusher housing 1, and a plurality of sieve holes 12 arranged in a matrix are opened at the bottom of the crusher housing 1. The inlet allows the aggregate to fall into the crusher housing 1, and the sieve holes 12 allow the crushed aggregate that can pass through the sieve holes 12 to drop.

[0029] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hammer crusher for recycled aggregates, comprising a crusher housing (1), characterized in that: Inside the crusher housing (1), there are multiple hammers (10). On the inner surface of the crusher housing (1), there is a counterattack lining plate (15). On the outside of the crusher housing (1), there is a stepped opening (6) corresponding to the position of the counterattack lining plate (15). On the surface of the counterattack lining plate (15), a mounting plate (8) is installed by screws. The mounting plate (8) is located in the stepped opening (6). On both sides of the opening, there are symmetrically arranged long strips (14). Between the two long strips (14), multiple fixing plates (7) are movably installed. Below the fixing plate (7), there is a pressure plate (23) movably connected. The bottom of the pressure plate (23) contacts the surface of the mounting plate (8). A screw tube (16) is installed through the surface of the fixing plate (7). Inside the screw tube (16), a fastening screw (17) is installed by threads. One end of the fastening screw (17) contacts the top of the pressure plate (23). A limiting mechanism is provided between the pressure plate (23) and the two long strips (14).

2. The hammer crusher for recycled aggregate according to claim 1, characterized in that: The limiting mechanism includes four first mounting blocks (18) and two arc-shaped racks (9). The two arc-shaped racks (9) are respectively installed on the tops of the two long strips (14) by screws. The four first mounting blocks (18) are respectively installed at both ends of the pressure plate (23) by screws. One end of the four first mounting blocks (18) is bent. One ends of the four first mounting blocks (18) respectively extend above the two arc-shaped racks (9). Limiting tooth blocks (25) are installed at the bent ends of the four first mounting blocks (18) by screws. The four limiting tooth blocks (25) are respectively inserted into the tooth grooves of the two arc-shaped racks (9).

3. The hammer crusher for recycled aggregate according to claim 1, characterized in that: Multiple movable rods (22) are installed through the surfaces of the fixing plates (7). One end of the movable rod (22) is installed on the top of the pressure plate (23) by screws. A stop block (20) is installed at the top end of the movable rod (22) by screws. A compression spring (21) is movably sleeved on the surface of the movable rod (22). Both ends of the compression spring (21) are respectively installed on the surfaces of the stop block (20) and the fixing plate (7) by screws.

4. The hammer crusher for recycled aggregate according to claim 1, characterized in that: Second mounting blocks (26) are installed at both ends of the fixing plate (7) by screws. Limiting rods (24) are installed on the surfaces of the two second mounting blocks (26) by screws. Chute grooves (19) are opened on the sides of the two long strips (14). One ends of the two limiting rods (24) are respectively slidably inserted into the two chute grooves (19).

5. A hammer crusher for recycled aggregate according to claim 1, characterized in that: Inside the crusher housing (1), there is a rotating shaft (13). Both ends of the rotating shaft (13) are installed through the bearings on two symmetrical sides of the crusher housing (1). A plurality of equally spaced hammer mounting seats (11) are fixedly sleeved on the surface of the rotating shaft (13). A plurality of hammers (10) are respectively installed on the sides of the plurality of hammer mounting seats (11) by screws. On one side of the crusher housing (1), there is a drive motor (5). A transmission wheel (3) is fixedly sleeved on the movable end of the drive motor (5) and one end of the rotating shaft (13). A plurality of transmission belts (2) are sleeved between the two transmission wheels (3).

6. The hammer crusher for recycled aggregate according to claim 5, characterized in that: The bottom of the crusher housing (1) is installed with a base bracket (4) by screws. The drive motor (5) is installed on the top of the base bracket (4) by screws.

7. A hammer crusher for recycled aggregates according to claim 1, characterized in that: The top of the crusher housing (1) is provided with a feed inlet. The bottom of the crusher housing (1) is provided with a plurality of sieve holes (12) arranged in a matrix.

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