Concrete production raw material crusher capable of performing multi-stage crushing

Abstract

The invention relates to the technical field of crushing in concrete production, in particular to a raw material crusher capable of multi-stage crushing for concrete production, which comprises an outer shell and a supporting and discharging base connected below the outer shell, a feeding frame is connected above the outer shell, and belt pulleys are mounted on the outer sides of the front and rear ends of an eccentric shaft. A fixed jaw plate is installed on the inner wall of the left side of the outer shell, a bearing plate is arranged in the middle of the outer shell, an eccentric shaft is connected to the interior of the upper portion of the bearing plate in a penetrating mode, a movable jaw plate body is installed on the left side of the bearing plate, and a material pushing plate used for pushing and blocking raw materials is connected to the interior of the feeding frame. And an auxiliary crushing plate for shunting the raw materials is connected below the material pushing plate. According to the raw material crusher capable of performing multi-stage crushing and used for concrete production, the falling speed of part of raw materials in the feeding frame can be reduced, the situation that many raw materials fall together and accumulate is avoided, the raw materials can uniformly fall to all positions, and therefore the quality and efficiency of multi-stage crushing can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of concrete production and crushing, in particular to a raw material crusher for concrete production capable of multi-stage crushing. Background Art

[0002] Concrete is made by mixing and stirring various raw materials such as sand, stone aggregate and cement. Before mixing and stirring, a crusher is needed to crush the raw materials into suitable particle sizes to meet the needs of concrete production.

[0003] For example, the patent name disclosed in the prior art with the announcement number "CN111468272A" is "A multi-stage environmentally friendly crushing device for concrete waste", which discloses that the piston rod of the hydraulic cylinder is extended, thereby pushing the two extrusion plates to move closer to each other, so that the concrete is squeezed and crushed by the two extrusion plates, and the concrete is squeezed into small pieces, and the steel bars and other metals in the concrete are separated from the concrete. At this time, the electromagnet is turned on, and the electromagnet generates a strong magnet to adsorb the steel bars and other metal objects in the broken concrete, thereby realizing the separation of the steel bars and the concrete. After the initial crushing of the concrete is completed, the cylinder is started in the reverse direction, and the piston rod of the cylinder is contracted, so that the support plate rotates downward, and the lower part of the two support plates is opened. At this time, the small pieces of concrete fall to the bottom of the crushing box, and the drive motor is started at this time. The output shaft of the drive motor is connected through the meshing first bevel gear and the second The bevel gear drives the rotating shaft to rotate, and the rotating shaft drives the crushing rod to rotate at high speed, thereby performing secondary crushing on the concrete. For example, the patent name disclosed in the prior art with the announcement number "CN210522631U" is "A multi-stage crushing device for raw materials for asphalt concrete production". It discloses that when in use, the single-shaft motor and the double-shaft motor are started, and the raw materials to be crushed are added through the feed port. The raw materials are first crushed preliminarily through the first crushing structure, and then enter the second crushing structure through the first leakage port at the bottom of the crushing box for deep crushing. When the raw materials crushed by the crushing disk meet the size, they will pass through the filter screen on the second leakage port into the crushing ball for fine crushing. The raw materials that have not passed through are accumulated on the second fixed plate, and are driven by the continuous brushing of the brush plate to enter the crushing area of ​​the crushing disk again for secondary crushing. After the crushing is completed, the discharge port is controlled by the control valve to discharge the materials.

[0004] Although the crusher in the above-mentioned prior art can achieve the effect of multi-stage crushing through the coordinated use of the first crushing structure and the second crushing structure, since the raw materials fall directly from the feed port and are initially crushed through the first crushing structure, this may cause the raw materials to accumulate on the first crushing structure. At the same time, the raw materials cannot be evenly distributed on the first crushing structure, which will affect the initial crushing effect and efficiency, and then the multi-stage crushing operation cannot be carried out well. Therefore, we propose a raw material crusher for concrete production that can perform multi-stage crushing in order to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide a raw material crusher for concrete production that can perform multi-stage crushing, so as to solve the problem raised in the above background technology that the crushers currently on the market may cause the raw materials to accumulate on the first crushing structure, and the raw materials cannot be evenly distributed on the first crushing structure, thereby affecting the initial crushing effect and efficiency, and then failing to perform multi-stage crushing operations well.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a raw material crusher for concrete production capable of multi-stage crushing, comprising an outer shell and a supporting and unloading base connected to the bottom of the outer shell, a feed frame is connected to the top of the outer shell, an eccentric shaft is connected through the middle position of the upper part of the outer shell, pulleys are installed on the outer sides of the front and rear ends of the eccentric shaft, a fixed jaw plate is installed on the left inner wall of the outer shell, a bearing plate is arranged inside the middle part of the outer shell, an eccentric shaft is connected through the upper part of the bearing plate, a movable jaw plate body is installed on the left side of the bearing plate, a push plate for pushing and blocking the raw materials is connected to the inside of the feed frame, and an auxiliary crushing plate for diverting the raw materials is connected below the push plate.

[0007] Preferably, the bottom surface of the outer shell is open, the interior of the support base is hollow, an adjustment block is installed inside the right side of the outer shell, and the left side of the adjustment block is connected to the bearing plate through a thrust plate.

[0008] Preferably, a single-rotation reciprocating screw is rotatably connected to a groove in the middle of the upper surface of the feed frame, and a push plate is threadedly connected to the outer side of the single-rotation reciprocating screw, and the lower outer side surface of the push plate is fitted with the inner wall of the feed frame.

[0009] Preferably, slide grooves are symmetrically opened inside the upper surface of the feed frame, and a row of self-propelled control blocks are installed at equal intervals in the slide grooves. The outer sides of the self-propelled control blocks are arranged in an arc shape, and the left and right sides of the self-propelled control blocks are arranged in an inclined state.

[0010] Preferably, two through grooves are symmetrically provided inside the push plate, a moving column is arranged through the through groove, a circular limit slider is fixed on the upper outer side of the moving column, the diameter of the limit slider is larger than the width of the through groove, the lower surface of the limit slider is in close contact with the upper surface of the push plate, and an auxiliary crushing plate arranged in an inclined shape is fixed to the lower end of the moving column, the upper end of the moving column is inserted into the slide groove and in close contact with the outer side of the self-propelled control block, the moving column forms a front and rear reciprocating sliding structure through the self-propelled control block, a return spring is installed in the through groove, and the other end of the return spring is connected to the moving column.

[0011] Preferably, a conical crushing column is installed on the outer side of the auxiliary crushing plate.

[0012] Preferably, the auxiliary crushing plate is configured to reciprocate left and right via a push plate.

[0013] Preferably, a protective frame is connected through the outer middle part of the eccentric shaft, the upper end of the protective frame is connected to the inner wall of the upper surface of the outer shell, and a transmission vertical rod is rotatably installed through the inner upper surface of the outer shell, and the upper and lower ends of the transmission vertical rod are respectively connected to the right end of the single-rotation reciprocating screw and the outer middle part of the eccentric shaft through a bevel gear set, and the bevel gear set at the lower end of the transmission vertical rod is arranged in the protective frame.

[0014] Preferably, the movable jaw plate body is composed of a first movable jaw plate, a second movable jaw plate and a third movable jaw plate, and the first movable jaw plate, the second movable jaw plate and the third movable jaw plate are sequentially installed on the left side of the supporting plate from bottom to top, the first movable jaw plate is fixedly installed on the supporting plate, and the second movable jaw plate and the third movable jaw plate are both slidably connected to the supporting plate through an air push control assembly.

[0015] Preferably, the air push control assembly includes two groups of cylindrical air push frames installed in the supporting plate, each group is provided with two, the inside of the air push frames is fitted with piston columns, one end of the piston columns in the two groups of air push frames passes through the supporting plate and is respectively connected to the second movable jaw plate and the third movable jaw plate, the right ends of the two air push frames in each group are connected to a "U"-shaped shunt pipe, the two shunt pipes are connected by a "T"-shaped connecting hose, and the right end of the connecting hose passes through the right side surface of the outer shell and is connected to the external pump body.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the raw material crusher for concrete production capable of multi-stage crushing can slow down the falling speed of part of the raw materials in the feed frame, avoid accumulation of a large number of raw materials falling together, and make the raw materials fall evenly to various positions, thereby improving the quality and efficiency of multi-stage crushing. The specific contents are as follows:

[0017] (1) The push plate moves back and forth left and right, which can block and limit part of the raw materials in the feed frame, thereby slowing down the falling speed of part of the raw materials in the feed frame and preventing a large amount of raw materials from falling together and causing accumulation. At the same time, the inclined auxiliary crushing plate moves back and forth left and right, which can divert the raw materials in the middle of the feed frame to the front and rear sides, so that the raw materials can fall evenly to various positions, thereby improving the quality and efficiency of multi-stage crushing;

[0018] Furthermore, by setting the self-propelled control block with an arc shape on the outside, the moving column and the auxiliary crushing plate can be driven to move back and forth, so that the cooperation between the auxiliary crushing plate and the feed frame can initially crush part of the raw materials;

[0019] (2) The air thrust control assembly can drive the second movable jaw plate and the third movable jaw plate to move, so as to further adjust the distance between the second movable jaw plate and the third movable jaw plate and the fixed jaw plate, thereby facilitating the regulation of the swing amplitude of the second movable jaw plate and the third movable jaw plate, and then the regulation of the crushing degree of the movable jaw plate body, so that the crusher can perform high-intensity crushing on raw materials with higher hardness, thus not only meeting different crushing requirements, but also improving the efficiency of multi-stage crushing and shortening the time required for crushing;

[0020] (3) The upper and lower ends of the transmission vertical rod are connected to the single-rotation reciprocating screw and the eccentric shaft through a bevel gear set, respectively, which saves energy. The bevel gear set at the lower end of the transmission vertical rod can be protected by a protective frame to prevent dust generated by crushing from contacting the bevel gear set. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the main structure inside the outer shell of the present invention;

[0023] Figure 3 This is a schematic diagram of the internal structure of the outer shell of the present invention when viewed from above;

[0024] Figure 4 It is a schematic diagram of the connection structure between the transmission vertical rod and the eccentric shaft of the present invention;

[0025] Figure 5 This is a schematic diagram of the main cross-sectional structure of the feed frame of the present invention;

[0026] Figure 6 It is a schematic diagram of a top cross-sectional structure of the connection between the feed frame and the single-rotation reciprocating screw rod of the present invention;

[0027] Figure 7 This is a schematic diagram of the three-dimensional structure of the pusher plate of the present invention;

[0028] Figure 8 This is a schematic diagram of the cross-sectional structure of the connection between the push plate and the moving column of the present invention;

[0029] Fig. 9 It is a left-side structural schematic diagram of the movable jaw plate body in the second embodiment of the present invention;

[0030] Fig.10 This is a schematic diagram of the main structure of the movable jaw plate body in the second embodiment of the present invention;

[0031] Fig.11 It is a schematic diagram of the connection structure between the movable jaw plate body and the piston column in the second embodiment of the present invention.

[0032] In the figure: 1. outer shell; 2. supporting base for unloading; 3. eccentric shaft; 4. pulley; 5. transmission vertical rod; 6. feeding frame; 7. single-rotation reciprocating screw; 8. bearing plate; 9. movable jaw plate body; 91. first movable jaw plate; 92. second movable jaw plate; 93. third movable jaw plate; 10. fixed jaw plate; 11. adjustment block; 12. thrust plate; 13. protection frame; 14. push plate; 141. through groove; 15. auxiliary crushing plate; 16. self-propelled control block; 17. slide groove; 18. moving column; 181. limit slider; 182. reset spring; 19. shunt pipe; 20. connecting hose; 21. air push frame; 22. piston column. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figure 1-Figure 11 , the present invention provides the following technical solutions:

[0035] Embodiment 1: The raw material crusher for concrete production capable of multi-stage crushing in this embodiment can improve the quality and crushing efficiency of the later multi-stage crushing by controlling the amount of raw materials discharged into the feed frame 6 and controlling the uniformity of the raw materials falling. The specific structure is shown in the attached Figure 1-Figure 8 As shown, it includes an outer shell 1, and a supporting base 2 connected to the lower part of the outer shell 1, a feed frame 6 is connected to the upper part of the outer shell 1, an eccentric shaft 3 is connected through the upper middle part of the outer shell 1, and pulleys 4 are installed on the outer sides of the front and rear ends of the eccentric shaft 3, a fixed jaw plate 10 is installed on the left inner wall of the outer shell 1, a bearing plate 8 is arranged inside the middle part of the outer shell 1, the upper part of the bearing plate 8 is connected through the eccentric shaft 3, a movable jaw plate body 9 is installed on the left side of the bearing plate 8, and a push plate 1 for pushing and blocking the raw material is connected inside the feed frame 6 4. An auxiliary crushing plate 15 for diverting the raw materials is connected below the push plate 14. The bottom surface of the outer shell 1 is open, and the interior of the base 2 supporting the unloading is hollow. An adjustment block 11 is installed inside the right side of the outer shell 1. The left side of the adjustment block 11 is connected to the bearing plate 8 through a thrust plate 12. A single-rotation reciprocating screw 7 is rotatably connected through a slot in the middle position of the inner part of the upper surface of the feed frame 6. The outer side of the single-rotation reciprocating screw 7 is threadedly connected to the push plate 14. The lower outer side surface of the push plate 14 is fitted with the inner wall of the feed frame 6.

[0036] A slidable groove 17 is symmetrically provided inside the upper surface of the feed frame 6, and a row of self-propelled control blocks 16 are installed at equal intervals in the slidable groove 17. The outer side of the self-propelled control block 16 is arranged in an arc shape, and the left and right sides of the self-propelled control block 16 are arranged in an inclined shape. Two through grooves 141 are symmetrically provided inside the push plate 14, and a moving column 18 is arranged through the through groove 141. A circular limiting slider 181 is fixed to the upper outer side of the moving column 18, and the diameter of the limiting slider 181 is larger than the width of the through groove 141. The lower surface of the limiting slider 181 is in contact with the upper surface of the push plate 14, and an auxiliary crushing plate 15 arranged in an inclined shape is fixed to the lower end of the moving column 18. The upper end of the moving column 18 is inserted into the slidable groove 17 and is in contact with the outer side of the self-propelled control block 16. The moving column 18 forms a front-to-rear reciprocating sliding structure through the self-propelled control block 16, a return spring 182 is installed in the through groove 141, and the other end of the return spring 182 is connected to the moving column 18, and a conical crushing column is installed on the outer side of the auxiliary crushing plate 15. The auxiliary crushing plate 15 forms a left-right reciprocating movement through the push plate 14, and a protective frame 13 is connected to the outer side of the middle part of the eccentric shaft 3. The upper end of the protective frame 13 is connected to the inner wall of the upper surface of the outer shell 1, and a transmission vertical rod 5 is rotatably installed inside the upper surface of the outer shell 1. The upper and lower ends of the transmission vertical rod 5 are respectively connected to the right end of the single-rotation reciprocating screw 7 and the outer side of the middle part of the eccentric shaft 3 through a bevel gear set, and the bevel gear set at the lower end of the transmission vertical rod 5 is arranged in the protective frame 13.

[0037] First, the raw materials required for concrete production are transported to the feed frame 6 through an external conveying mechanism, and then the raw materials fall into the space between the movable jaw plate body 9 and the fixed jaw plate 10 in the outer shell 1 through the feed frame 6 with an inclined bottom surface. At this time, the external motor is started, and the external motor drives the pulley 4 and the eccentric shaft 3 to rotate through the transmission belt. At this time, the eccentric shaft 3 drives the movable jaw plate body 9 to move back and forth in the direction of the fixed jaw plate 10, so that the fixed jaw plate 10 cooperates with the movable jaw plate body 9 to crush the raw materials. At this time, the adjustment block 11 and the thrust plate 12 can ensure that the movable jaw plate body 9 can stably perform the crushing operation. This part is the existing technology and will not be introduced in detail here. At the same time, when the eccentric shaft 3 rotates, it drives the transmission vertical rod 5 to rotate through the bevel gear group, and the upper end of the transmission vertical rod 5 drives the single-rotor gear group to rotate through the bevel gear group. The reciprocating screw 7 rotates. Since the eccentric shaft 3 passes through the front and rear sides of the protective frame 13, and the bevel gear set connected to the eccentric shaft 3 and the lower end of the transmission vertical rod 5 is arranged in the protective frame 13, the protective frame 13 can protect the bevel gear set at the lower end of the transmission vertical rod 5 to prevent the dust generated when the raw materials are crushed from contacting the bevel gear set connected to the lower end of the transmission vertical rod 5. When the single-rotation reciprocating screw 7 rotates, it drives the push plate 14 connected by the outer thread to move back and forth left and right in the feed frame 6. Therefore, the push plate 14 can push and limit part of the raw materials in the feed frame 6. The height of the push plate 14 is equal to two-thirds of the height of the left end of the feed frame 6, so that the push plate 14 can well limit the height of the material falling to the right in the feed frame 6, thereby preventing all the raw materials in the feed frame 6 from falling together and causing accumulation.

[0038] At the same time, the pushing plate 14 will drive the moving column 18 and the auxiliary crushing plate 15 to move back and forth left and right. The inclined auxiliary crushing plate 15 can divert the raw materials in the middle of the feeding frame 6 to the front and rear sides, so that the raw materials can fall evenly, avoiding that the raw materials are piled up in one place after falling and affecting the later multi-stage crushing operation. When the moving column 18 moves back and forth left and right, the upper end of the moving column 18 will contact with the multiple self-propelled control blocks 16 in the slide groove 17 in sequence. When the moving column 18 contacts the self-propelled control block 16, the self-propelled control block 16 with an arc shape on the outer side can push the moving column 18 inward. At this time, the moving column 18 slides in the through groove 141. At this time, the reset spring 182 accumulates force, and the diameter of the limit slider 181 is larger than the width of the through groove 141, which can avoid the limit slider 181 from separating from the through groove 141. At the same time, the bottom surface of the limit slider 181 Ball bearings can be installed to reduce the friction between the limit slider 181 and the push plate 14 when it moves, making it easier for the moving column 18 to move stably. When the moving column 18 is separated from the self-propelled control block 16, the moving column 18 and the auxiliary crushing plate 15 are automatically driven to move outward by the stored force of the reset spring 182. At this time, the two groups of auxiliary crushing plates 15 move toward the inner walls of the front and rear sides of the feed frame 6 respectively, so that the auxiliary crushing plates 15 can cooperate with the feed frame 6 to perform preliminary crushing of part of the raw materials, and then the raw materials after preliminary crushing fall evenly between the fixed jaw plate 10 and the movable jaw plate body 9 for secondary crushing. Finally, the crushed raw materials fall downward through the outer shell 1 with an open bottom and the supporting and unloading base 2 with a hollow interior. The outer side of the auxiliary crushing plate 15 is equipped with a conical crushing column to help improve the crushing efficiency of the auxiliary crushing plate 15.

[0039] The shortest distance between two adjacent self-propelled control blocks 16 is greater than the diameter of the moving column 18, so that the moving column 18 can slide back and forth in a larger range, so that the moving column 18 can drive the auxiliary crushing plate 15 to move back and forth in a larger range, so that the auxiliary crushing plate 15 can perform preliminary crushing operations well. At the same time, the auxiliary crushing plate 15 that moves back and forth can not only perform preliminary crushing operations, but also actively move part of the raw materials back and forth in the forward and backward directions, so as to assist the raw materials in diversion operations.

[0040] Embodiment 2: The concrete production material crusher capable of multi-stage crushing in this embodiment can adjust the swing amplitude of the movable jaw plate body 9 through the air push control component, thereby adjusting its crushing strength, thereby improving the crushing efficiency of the entire raw material crusher and shortening the time required for crushing. The specific structure is shown in the attached Figure 1-Figure 2 And attached Figure 9-11As shown, the movable jaw plate body 9 is composed of a first movable jaw plate 91, a second movable jaw plate 92 and a third movable jaw plate 93, which are sequentially mounted on the left side of the bearing plate 8 from bottom to top, the first movable jaw plate 91 is fixedly mounted on the bearing plate 8, and the second movable jaw plate 92 and the third movable jaw plate 93 are both slidably connected to the bearing plate 8 through an air push control assembly, and the air push control assembly includes two groups of cylindrical air push frames 21 mounted in the bearing plate 8, Two are provided in each group, and the piston column 22 is fitted and connected inside the air push frame 21. One end of the piston column 22 in the two groups of air push frames 21 passes through the bearing plate 8 and is respectively connected to the second movable jaw plate 92 and the third movable jaw plate 93. The right ends of the two air push frames 21 in each group are connected to the "U"-shaped shunt pipe 19, and the two shunt pipes 19 are connected by a "T"-shaped connecting hose 20. The right end of the connecting hose 20 passes through the right side surface of the outer shell 1 and is connected to the external pump body.

[0041] In the first embodiment, since the size of the eccentric shaft 3 is fixed, the swing amplitude of the movable jaw plate body 9 driven by the eccentric shaft 3 is also fixed, which makes the crushing strength of the movable jaw plate body 9 fixed. Therefore, on the basis of the first embodiment, when the movable jaw plate body 9 in the present application is performing a crushing operation, the connecting hose 20 can be passed through the right side of the outer shell 1 to connect with the external pump body for controlling gas delivery and gas extraction. When the movable jaw plate body 9 is close to the fixed jaw plate 10 for crushing operation, the pump body will transport the gas to the four groups of gas push frames 21 through the connecting hose 20 and the diverter pipe 19. At this time, the piston column 22 in the gas push frame 21 automatically pushes the second movable jaw plate 92 and the third movable jaw plate 93 toward the fixed jaw plate 10. The movable jaw plate 92 and the third movable jaw plate 93 move in the opposite direction, thereby shortening the spacing between the second movable jaw plate 92 and the third movable jaw plate 93 and the fixed jaw plate 10, so that it is easy to change the swing amplitude of the second movable jaw plate 92 and the third movable jaw plate 93, and then the crushing strength of the second movable jaw plate 92 and the third movable jaw plate 93 can be increased, and then the raw materials crushed by the second movable jaw plate 92 and the third movable jaw plate 93 are crushed by the first movable jaw plate 91, so as to improve the crushing strength and crushing efficiency of the crusher for raw materials with higher hardness. When the movable jaw plate body 9 is away from the fixed jaw plate 10 and no crushing operation is performed, the pump body is evacuated at this time, as shown above, and the piston column 22 in the air push frame 21 automatically drives the second movable jaw plate 92 and the third movable jaw plate 93 to reset, so as to facilitate the next crushing use.

[0042] Embodiment 3: The raw material crusher for concrete production capable of multi-stage crushing in this embodiment can use an external motor instead of the transmission vertical rod 5, and the right end of the single-rotation reciprocating screw 7 can be directly connected to the external motor through a coupling. At this time, the single-rotation reciprocating screw 7 is directly driven to rotate by the external motor.

[0043] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A material crusher for concrete production capable of multi-stage crushing, comprising an outer shell (1), and a supporting material discharge base (2) connected below the outer shell (1), wherein a feed frame (6) is connected above the outer shell (1); Features: An eccentric shaft (3) is connected through the middle of the upper part of the outer shell (1), pulleys (4) are installed on the outer sides of the front and rear ends of the eccentric shaft (3), a fixed jaw plate (10) is installed on the left inner wall of the outer shell (1), a bearing plate (8) is arranged inside the middle part of the outer shell (1), the eccentric shaft (3) is connected through the upper part of the bearing plate (8), a movable jaw plate body (9) is installed on the left side of the bearing plate (8), a push plate (14) for pushing and blocking raw materials is connected inside the feed frame (6), and an auxiliary crushing plate (15) for diverting raw materials is connected below the push plate (14).

2. A concrete production material crusher capable of multi-stage crushing according to claim 1, characterized in that: The bottom surface of the outer shell (1) is open, the interior of the supporting base (2) is hollow, an adjustment block (11) is installed inside the right side of the outer shell (1), and the left side of the adjustment block (11) is connected to the bearing plate (8) through a thrust plate (12).

3. A concrete production material crusher capable of multi-stage crushing according to claim 1, characterized in that: A single-rotation reciprocating screw (7) is rotatably connected to a groove in the middle of the upper surface of the feed frame (6); a push plate (14) is threadedly connected to the outer side of the single-rotation reciprocating screw (7); and the lower outer side surface of the push plate (14) is fitted with the inner wall of the feed frame (6).

4. A concrete production material crusher capable of multi-stage crushing according to claim 1, characterized in that: The upper surface of the feed frame (6) is symmetrically provided with slide grooves (17), and a row of self-propelled control blocks (16) are installed at equal intervals in the slide grooves (17). The outer sides of the self-propelled control blocks (16) are arranged in an arc shape, and the left and right sides of the self-propelled control blocks (16) are arranged in an inclined shape.

5. A concrete production material crusher capable of multi-stage crushing according to claim 4, characterized in that: The push plate (14) has two through slots (141) symmetrically formed inside, a moving column (18) is arranged through the through slot (141), a circular limit slider (181) is fixed on the upper outer side of the moving column (18), the diameter of the limit slider (181) is larger than the width of the through slot (141), the lower surface of the limit slider (181) is in close contact with the upper surface of the push plate (14), an auxiliary crushing plate (15) arranged in an inclined shape is fixed to the lower end of the moving column (18), the upper end of the moving column (18) is inserted into the slide groove (17) and is in close contact with the outer side of the self-propelled control block (16), the moving column (18) forms a front-to-back reciprocating sliding structure through the self-propelled control block (16), a return spring (182) is installed in the through slot (141), and the other end of the return spring (182) is connected to the moving column (18).

6. A concrete production material crusher capable of multi-stage crushing according to claim 1, characterized in that: A cone-shaped crushing column is installed on the outer side of the auxiliary crushing plate (15).

7. A concrete production material crusher capable of multi-stage crushing according to claim 1, characterized in that: The auxiliary crushing plate (15) is configured to reciprocate left and right through the pushing plate (14).

8. The material crusher for concrete production capable of multi-stage crushing according to claim 1, characterized in that: A protective frame (13) is connected to the outer side of the middle part of the eccentric shaft (3); the upper end of the protective frame (13) is connected to the inner wall of the upper surface of the outer shell (1); a transmission vertical rod (5) is rotatably installed inside the upper surface of the outer shell (1); the upper and lower ends of the transmission vertical rod (5) are respectively connected to the right end of the single-rotation reciprocating screw (7) and the outer side of the middle part of the eccentric shaft (3) through a bevel gear set; the bevel gear set at the lower end of the transmission vertical rod (5) is arranged in the protective frame (13).

9. A concrete production material crusher capable of multi-stage crushing according to claim 1, characterized in that: The movable jaw plate body (9) is composed of a first movable jaw plate (91), a second movable jaw plate (92) and a third movable jaw plate (93). The first movable jaw plate (91), the second movable jaw plate (92) and the third movable jaw plate (93) are sequentially mounted on the left side of the bearing plate (8) from bottom to top. The first movable jaw plate (91) is fixedly mounted on the bearing plate (8), and the second movable jaw plate (92) and the third movable jaw plate (93) are both slidably connected to the bearing plate (8) through an air push control assembly.

10. A concrete production material crusher capable of multi-stage crushing according to claim 9, characterized in that: The air push control assembly comprises two groups of cylindrical air push frames (21) installed in a bearing plate (8), each group being provided with two air push frames, the inside of which is fitted with a piston column (22), one end of the piston column (22) in the two groups of air push frames (21) passes through the bearing plate (8) and is respectively connected to the second movable jaw plate (92) and the third movable jaw plate (93), the right ends of the two air push frames (21) in each group are connected to a "U"-shaped shunt pipe (19), the two shunt pipes (19) are connected via a "T"-shaped connecting hose (20), the right end of the connecting hose (20) passes through the right side surface of the outer shell (1) and is connected to the external pump body.

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