A concrete sand and gravel crushing and separation equipment
By designing three sets of crushing and separation units and dredging systems, the problems of single crushing methods and screen blockage in existing equipment are solved, and fine separation of concrete and efficient separation of sand and gravel are achieved.
Patent Information
- Application Number
- CN202411131577.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-19
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2044-08-19
AI Technical Summary
The crushing method of existing concrete sand and gravel crushing and separation equipment is single, resulting in the inability to achieve fine separation, and the screening net is prone to clogging, affecting efficiency and stability.
A device consisting of three sets of crushing and separation units was designed to crush concrete by gradually increasing crushing accuracy by primary, intermediate and crushing rollers, and maintain the horizontal state of the screen through gears and motor-driven dredging plates and torsion table systems. , prevent blockage and ensure sufficient separation of sand and gravel.
The full crushing of concrete and the full separation of sand and gravel are achieved, the separation efficiency and stability are improved, and the problem of screen clogging is avoided.
Smart Images
Figure CN118634900B_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of crushing, and in particular relates to a concrete sand and gravel crushing and separation device. Background Art
[0002] As an important building material, concrete is mainly composed of sand and stone. In the process of production and use, sometimes excess concrete is produced. At this time, we can adopt the way of recycling and reuse to achieve the goal of effective resource circulation and environmental protection. The process of recycling and reusing concrete first requires the concrete to be crushed. Professional crushing equipment is used to break the concrete blocks into smaller particles for subsequent separation.
[0003] In the prior art, concrete is often directly crushed and sand is separated through a screening process to achieve the basic goal of sand and gravel separation. However, the crushing method of this method is relatively simple, resulting in the inability to finely separate concrete. In addition, the screening net is prone to clogging during use, which not only affects the efficiency of sand and gravel crushing and separation, but may also cause adverse effects on the stability and quality of the entire separation process. Summary of the invention
[0004] The technical problem to be solved by the present invention is to overcome the disadvantages of the prior art and provide a sawing machine for composite insulation boards.
[0005] The technical solution adopted to solve the above technical problems is: a concrete sand and gravel crushing and separation equipment, including a machine platform, on which three groups of crushing and separation units are arranged in sequence from top to bottom, the crushing and separation units include a crushing box and a middle frame, the middle frame is arranged above the crushing box, the crushing box of the first group of crushing and separation units is arranged on the middle frame of the second group of crushing and separation units, the crushing box of the second group of crushing and separation units is arranged on the middle frame of the third group of crushing and separation units, and a material box is arranged above the middle frame of the first group of crushing and separation units; two crushing support plates are arranged above the machine platform, the crushing support plates are provided with a motor 1, the telescopic shaft of the motor 1 is connected to the primary crushing plate, the primary crushing plate is located inside the material box, the crushing support plates are provided with a motor 2, the telescopic shaft of the motor 2 An intermediate crushing plate is provided on it, and the intermediate crushing plate is located in the crushing box of the first group of crushing and separation units. Four groups of crushing rollers are rotatably provided in the crushing box of the second group of crushing and separation units. A gear one is provided on the rotating shaft of the crushing roller, and the four gears are meshed in sequence. The rotating shaft of the second crushing roller is connected with the rotating shaft of the motor three, and the motor three is fixed on the crushing support plate; a screen is rotatably provided in the three crushing boxes, and the screen is used to screen and filter sand materials. The guide plate is located below the screen, and the guide plate is rotatably provided in the crushing box. Sand outlets are provided on the sides of the three crushing boxes, and the sand outlets are connected to the inlet of the sand outlet box. The side of the crushing box of the third group of crushing and separation units is also provided with a stone outlet, and a stone outlet box is provided in the stone outlet, and the stone outlet is used to separate and discharge stones.
[0006] Furthermore, the primary crushing plate and the intermediate crushing plate are provided with crushing cylinders, and the density of the crushing cylinders of the intermediate crushing plate is greater than the density of the crushing cylinders of the primary crushing plate.
[0007] Furthermore, the crushing roller is provided with crushing teeth, and the crushing teeth of two adjacent crushing rollers are arranged alternately.
[0008] Furthermore, a dredging plate is rotatably provided in the crushing box, and a row of bosses is provided on the dredging plate. The row of bosses of the dredging plate is used to dredge the filter holes of the screen. Gear 2 is provided on the rotating shaft of the screen, and gear 3 is provided on the rotating shaft of the dredging plate. Gear 2 and gear 3 are meshed.
[0009] Furthermore, a twisting table is provided on the rotating shaft of the screen, a boss is provided on the twisting table, an inclined slide groove is provided on the twisting cylinder, the boss of the twisting table and the inclined slide groove of the twisting cylinder form a sliding fit, the twisting cylinder is fixedly arranged on the cross bar, the cross bar is slidably arranged on the middle frame, the two ends of the spring one are respectively connected with the middle frame and the cross bar, a sliding rod is slidably arranged on the cross bar, a gap plate and a locking plate are provided at both ends of the sliding rod, the two ends of the spring two are respectively connected with the cross bar and the gap plate, an inclined surface is provided on the locking block, the locking plate is used to drive the inclined surface of the locking block, and the locking block contacts the cross bar, the locking block is used to prevent the cross bar from moving, the sliding column of the locking block is slidably arranged on the sliding seat, the sliding seat is fixedly arranged on the crushing box, and the two ends of the spring three are respectively connected with the sliding seat and the locking block.
[0010] Furthermore, the machine is provided with a material changing support plate, on which a motor four is arranged, the rotating shaft of the motor four is connected to the main shaft, and the main shaft is rotated on the material changing support plate, and three levers are arranged on the main shaft in sequence, and the three levers are spaced ninety degrees apart in sequence, and the levers are used to drive the gap plate to move.
[0011] Furthermore, gears four are respectively provided at both ends of the guide plate shaft, the gears four are meshed with the racks, the racks are fixed on the collecting slide, the collecting slide is slidably arranged on the crushing box, and a boss is provided in the middle of the collecting slide.
[0012] Furthermore, the main shaft is provided with cam slot plates in sequence, and the three cam slot plates are spaced ninety degrees apart in sequence. The cam slot plates are provided with cam slots, and the cam slots and the bosses form a sliding fit.
[0013] The beneficial effects of the present invention are as follows: (1) The present invention adopts three groups of crushing and separation units, and the three groups of crushing and separation units adopt primary crushing plates, intermediate crushing plates, and crushing rollers in turn to crush concrete, and the crushing accuracy increases from the first group of crushing and separation units to the third group of crushing and separation units, so that the concrete can be fully crushed and the sand and stone can be fully separated.
[0014] (2) When the crushing and separation unit of the present invention is crushing, the screen is in a horizontal state, and the locking block blocks the movement of the horizontal strip, so the twisting table and the twisting cylinder remain stationary, so that the screen is locked in a horizontal state. When the lever drives the gap plate to move toward the middle frame, the locking block automatically unlocks the horizontal strip, and during the process of the four-drive main shaft of the motor rotating one circle, the screens of the three groups of crushing and separation units are unfolded in sequence from bottom to top.
[0015] (3) When the screen of the present invention rotates forty-five degrees, power is transmitted through gear two and gear three, and the corresponding dredging plate rotates forty-five degrees in the opposite direction. The boss of the dredging plate is inserted into the filter hole of the screen to dredge the screen, and before the screen rotates, the guide plate automatically rotates to make space for the rotation of the screen. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic structural diagram of the front side of an embodiment of the present invention.
[0017] Figure 2 It is a structural schematic diagram of the back side of an embodiment of the present invention.
[0018] Figure 3 It is a schematic structural diagram of a cross section of an embodiment of the present invention.
[0019] Figure 4 yes Figure 3 A partial enlarged view of point A in the middle.
[0020] Figure 5 It is a structural schematic diagram of the explosion of the sand discharge box and the stone discharge box of the present invention.
[0021] Figure 6 It is a structural schematic diagram of the primary crushing plate of the present invention.
[0022] Figure 7 It is a structural schematic diagram of the intermediate crushing plate of the present invention.
[0023] Figure 8 It is a schematic structural diagram of the crushing roller of the present invention.
[0024] Fig. 9 It is a structural schematic diagram of the crushing and separation unit of the present invention.
[0025] Fig.10 It is a structural schematic diagram of the installation of the screen and the dredging plate of the present invention.
[0026] Fig.11 yes Fig.10 A partial enlarged view of point B in the middle.
[0027] Fig.12 It is a structural schematic diagram of the twisting table and the twisting barrel explosion of the present invention.
[0028] Fig.13 It is a structural schematic diagram of the horizontal strip plate of the present invention.
[0029] Fig.14 It is a structural schematic diagram of the installation of the material guide plate of the present invention.
[0030] Fig.15 yes Fig.14 A partial enlarged view of point C in the middle.
[0031] Fig.16 It is a structural schematic diagram of the installation of the shifting lever and the cam slot plate of the present invention.
[0032] Fig.17 It is a structural schematic diagram of the cam slot plate of the present invention.
[0033] Figure numbers: 1-machine; 2-crushing box; 201-sand outlet; 202-stone outlet; 3-middle frame; 4-material box; 5-crushing support plate; 6-motor 1; 7-primary crushing plate; 8-motor 2; 9-intermediate crushing plate; 10-crushing roller; 11-gear 1; 12-motor 3; 13-screen; 14-material guide plate; 15-sand box; 16-stone box; 17-dredge plate; 18-gear 2; 19-gear 3; 2 0-twist table; 21-twist cylinder; 211-inclined slide; 22-horizontal strip; 23-spring one; 24-slide rod; 25-gap plate; 26-lock plate; 27-spring two; 28-lock block; 29-slide seat; 30-spring three; 31-replacement support plate; 32-motor four; 33-spindle; 34-shift rod; 35-gear four; 36-rack; 37-collecting slide; 38-boss; 39-cam groove plate; 391-cam groove. DETAILED DESCRIPTION
[0034] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0035] like Figures 1 to 17 As shown, a concrete sand and gravel crushing and separation equipment comprises a machine platform 1, on which three groups of crushing and separation units are arranged in sequence from top to bottom, the crushing and separation units comprise crushing boxes 2 and middle frames 3, the middle frames 3 are arranged above the crushing boxes 2, the crushing boxes 2 of the first group of crushing and separation units are arranged on the middle frames 3 of the second group of crushing and separation units, the crushing boxes 2 of the second group of crushing and separation units are arranged on the middle frames 3 of the third group of crushing and separation units, and a material box 4 is arranged above the middle frames 3 of the first group of crushing and separation units.
[0036] Specifically, concrete is placed in the material box 4, and the concrete is crushed in sequence by three groups of crushing and separation units, and the crushing accuracy increases from the first group of crushing and separation units to the third group of crushing and separation units.
[0037] Two crushing support plates 5 are arranged above the machine table 1, and a motor 1 6 is arranged on the crushing support plate 5. The telescopic shaft of the motor 1 6 is connected with the primary crushing plate 7, and the primary crushing plate 7 is located inside the material box 4. A motor 2 8 is arranged on the crushing support plate 5, and an intermediate crushing plate 9 is arranged on the telescopic shaft of the motor 2 8. The intermediate crushing plate 9 is located in the crushing box 2 of the first group of crushing and separation units. Four groups of crushing rollers 10 are rotatably arranged in the crushing box 2 of the second group of crushing and separation units. A gear 1 11 is arranged on the rotating shaft of the crushing roller 10, and the four gears 11 are meshed in sequence. The rotating shaft of the second crushing roller 10 is connected with the rotating shaft of the motor 3 12, and the motor 3 12 is fixed on the crushing support plate 5.
[0038] Crushing cylinders are provided on the primary crushing plate 7 and the intermediate crushing plate 9 , and the density of the crushing cylinders of the intermediate crushing plate 9 is greater than the density of the crushing cylinders of the primary crushing plate 7 .
[0039] The crushing roller 10 is provided with crushing teeth, and the crushing teeth of two adjacent crushing rollers 10 are arranged alternately.
[0040] Specifically, the telescopic shafts of the two motors 6 extend to drive the two primary crushing plates 7 to move toward the middle to perform primary crushing on the concrete; the telescopic shafts of the two motors 2 8 extend to drive the two intermediate crushing plates 9 to move toward the middle to perform intermediate crushing on the concrete; the motor 3 12 drives the second crushing roller 10 to rotate, and the power is transmitted through the four gears 1 11 to drive the four crushing rollers 10 to rotate, and the crushing teeth of the crushing rollers 10 finely crush the concrete into stone.
[0041] A screen 13 is rotatably provided in each of the three crushing boxes 2, and the screen 13 is used to screen and filter sand. A material guide plate 14 is located below the screen 13, and the material guide plate 14 is rotatably provided in the crushing box 2. Sand outlets 201 are provided on the sides of the three crushing boxes 2, and the sand outlets 201 are connected to the inlet of the sand outlet box 15. A stone outlet 202 is also provided on the side of the crushing box 2 of the third group of crushing and separation units, and a stone outlet box 16 is provided in the stone outlet 202, and the stone outlet box 16 is used to separate and discharge stones.
[0042] Specifically, in the original state, the guide plate 14 is located at the lower chord side of the sand outlet 201, and the crushed concrete has sand falling, and the falling sand passes through the screen 13 and falls into the inclined guide plate 14, and the sand of the guide plate 14 enters the inlet of the sand outlet box 15, and then falls out from the outlet of the sand outlet box 15, and the screen 13 rotates, and the concrete that has not been crushed in the screen 13 falls into the crushing and separation unit of the next level for further crushing. Finally, the remaining stones fall into the stone outlet box 16 and are discharged outside the device.
[0043] A dredging plate 17 is rotatably provided in the crushing box 2, and a row of bosses is provided on the dredging plate 17. The row of bosses of the dredging plate 17 is used to dredge the filter holes of the screen 13. A gear 2 18 is provided on the rotating shaft of the screen 13, and a gear 3 19 is provided on the rotating shaft of the dredging plate 17. Gear 2 18 and gear 3 19 are meshed.
[0044] Considering that the filter holes of the screen 13 are easily blocked, when the screen 13 rotates forty-five degrees, power is transmitted through gear two 18 and gear three 19, and the corresponding dredging plate 17 rotates forty-five degrees in the opposite direction, and the boss of the dredging plate 17 is inserted into the filter holes of the screen 13 for dredging.
[0045] The rotating shaft of the screen 13 is also provided with a twisting table 20, a boss is provided on the twisting table 20, and an inclined slide groove 211 is provided on the twisting cylinder 21. The boss of the twisting table 20 and the inclined slide groove 211 of the twisting cylinder 21 form a sliding fit. The twisting cylinder 21 is fixed on the horizontal strip plate 22, and the horizontal strip plate 22 is slidably provided on the middle frame 3. The two ends of the spring 23 are respectively connected to the middle frame 3 and the horizontal strip plate 22. A slide rod 24 is slidably provided on the horizontal strip plate 22, and a gap is provided at both ends of the slide rod 24. The two ends of the spring 27 are connected to the horizontal plate 22 and the gap plate 25 respectively. The locking block 28 is provided with an inclined surface. The locking plate 26 is used to drive the inclined surface of the locking block 28, and the locking block 28 is in contact with the horizontal plate 22. The locking block 28 is used to prevent the horizontal plate 22 from moving. The sliding column of the locking block 28 is slidably arranged on the sliding seat 29, and the sliding seat 29 is fixedly arranged on the crushing box 2. The two ends of the spring 30 are respectively connected to the sliding seat 29 and the locking block 28.
[0046] Specifically, the torsion angle of the inclined slide groove 211 is forty-five degrees, the gap plate 25 moves toward the direction of the middle frame 3, the spring two 27 is compressed, the gap plate 25 moves synchronously with the slide rod 24 and the lock plate 26, the lock plate 26 acts on the inclined surface of the lock block 28, and thus drives the lock block 28 to move downward, the spring three 30 is compressed, and the lock block 28 is separated from the cross plate 22. At this time, the spring two 27 is compressed to the limit, so the gap plate 25 drives the cross plate 22 to move synchronously, the cross plate 22 drives the torsion cylinder 21 to move, and the inclined slide groove 211 of the torsion cylinder 21 drives the boss of the torsion table 20, so that the torsion table 20 rotates forty-five degrees, and the torsion table 20 drives the screen 13 to rotate forty-five degrees.
[0047] A material changing support plate 31 is provided on the machine 1, and a motor 4 32 is provided on the material changing support plate 31. The rotating shaft of the motor 4 32 is connected to the main shaft 33, and the main shaft 33 is rotatably provided on the material changing support plate 31. Three levers 34 are provided on the main shaft 33 in sequence. The three levers 34 are spaced ninety degrees apart in sequence. The levers 34 are used to drive the gap plate 25 to move.
[0048] Specifically, the motor 4 32 rotates to drive the main shaft 33 to rotate. During the first ninety-degree rotation of the main shaft 33, the third lever 34 drives the gap plate 25 to move. During the rotation of the main shaft 33 to forty-five degrees, the lever 34 drives the gap plate 25 to move toward the middle frame 3. During the rotation of the main shaft 33 from forty-five degrees to ninety degrees, the lever 34 moves away from the gap plate 25. The spring 1 23 provides power to restore the horizontal strip plate 22 to its original state. After the third lever 34 leaves the corresponding gap plate 25, the second lever 34 begins to contact the gap plate 25; after the second lever 34 leaves the corresponding gap plate 25, the third lever 34 begins to contact the gap plate 25. After the main shaft 33 rotates one circle, it returns to its original state. Therefore, during the rotation of the main shaft 33, the screens 13 of the third group to the first group of crushing and separation units rotate forty-five degrees in sequence to unfold.
[0049] Gears 35 are provided at both ends of the rotating shaft of the guide plate 14, and the gears 35 are meshed with racks 36. The racks 36 are fixed on a receiving slide 37, and the receiving slide 37 is slidably provided on the crushing box 2. A boss 38 is provided in the middle of the receiving slide 37.
[0050] Cam slot plates 39 are sequentially provided on the main shaft 33 , and the three cam slot plates 39 are sequentially spaced 90 degrees apart. A cam slot 391 is provided on the cam slot plate 39 , and the cam slot 391 forms a sliding fit with the boss 38 .
[0051] Specifically, the lever 34 drives the gap plate 25 to move toward the crushing box 2. In the process of driving the locking block 28 to leave the horizontal plate 22, the cam groove 391 drives the boss 38 and the collecting slide 37 to move toward the crushing box 2. The collecting slide 37 drives the rack 36 to move, and transmits power through the gear four 35 to drive the guide plate 14 to rotate, thereby making space for the rotation of the screen 13.
[0052] Working principle: in the original state, the screen 13 is in a closed state, and the material guide plate 14 is located below the screen 13 , and the material guide plate 14 is located at the lower chord side of the sand outlet 201 .
[0053] At the same time, two motors 1 6 are started to drive two primary crushing plates 7 to move toward the middle to perform primary crushing on the concrete; two motors 2 8 are started to drive two intermediate crushing plates 9 to move toward the middle to perform intermediate crushing on the concrete; motor 3 12 is started, and the machine 1 drives the second crushing roller 10 to rotate, and the power is transmitted through four gears 11 to drive the four crushing rollers 10 to rotate, and the crushing teeth of the crushing rollers 10 finely crush the concrete into stone; sand material falls from the crushed concrete, and the fallen sand material passes through the screen 13 and falls into the inclined guide plate 14, and the sand material of the guide plate 14 enters the inlet of the sand box 15, and then falls out from the outlet of the sand box 15.
[0054] Start the motor 4 32, the motor 4 32 rotates to drive the main shaft 33 to rotate. During the first 90 degrees of rotation of the main shaft 33, the third lever 34 drives the gap plate 25 to move. During the rotation of the main shaft 33 to 45 degrees, the lever 34 drives the gap plate 25 to move toward the middle frame 3, the spring 27 is compressed, the gap plate 25 moves synchronously with the slide bar 24 and the lock plate 26, the lock plate 26 acts on the inclined surface of the lock block 28, and thus drives the lock block 28 to move downward, the spring 30 is compressed, and the lock block 28 is separated from the horizontal strip plate 22. During this process, the cam groove 391 drives the boss 38 and the collection slide 37 to move toward the crushing box 2, and the collection slide 37 drives the rack 36 to move, and the gear The gear 35 transmits power to drive the guide plate 14 to rotate, making room for the rotation of the screen 13; the main shaft 33 continues to rotate, and the spring 27 is compressed to the limit at this time, so the gap plate 25 drives the horizontal strip plate 22 to move synchronously, the horizontal strip plate 22 drives the torsion barrel 21 to move, and the inclined slide 211 of the torsion barrel 21 drives the boss of the torsion table 20, so that the torsion table 20 rotates forty-five degrees, and the torsion table 20 drives the screen 13 to rotate forty-five degrees, and the remaining stones fall from the screen 13 into the stone box 16, and finally discharged outside the device. At the same time, when the screen 13 rotates forty-five degrees, the power is transmitted through the gear 2 18 and the gear 3 19, and the corresponding dredging plate 17 rotates forty-five degrees in the opposite direction, and the boss of the dredging plate 17 is inserted into the filter hole of the screen 13 for dredging. When the main shaft 33 rotates from 45 degrees to 90 degrees, the lever 34 moves away from the gap plate 25, and the spring 1 23 provides power to restore the horizontal strip plate 22 to its original state, so the screen 13 also restores to its original state.
[0055] According to the same principle, during the second ninety-degree rotation of the main shaft 33, the intermediate crushed concrete slides from the screen 13 of the second group of crushing and separation units to the third group of crushing and separation units; during the third ninety-degree rotation of the main shaft 33, the primary crushed concrete slides from the screen 13 of the first group of crushing and separation units to the second group of crushing and separation units, and the main shaft 33 returns to its original state after one rotation, and then the concrete is replenished in the material box 4.
[0056] The above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention.
Claims
1. A concrete sand and gravel crushing and separation device, comprising a machine platform (1), characterized in that: The machine platform (1) is provided with three groups of crushing and separation units from top to bottom, the crushing and separation units comprising a crushing box (2) and a middle frame (3), the middle frame (3) being arranged above the crushing box (2), the crushing box (2) of the first group of crushing and separation units being arranged on the middle frame (3) of the second group of crushing and separation units, the crushing box (2) of the second group of crushing and separation units being arranged on the middle frame (3) of the third group of crushing and separation units, and a material box (4) being arranged above the middle frame (3) of the first group of crushing and separation units; Two crushing support plates (5) are arranged above the machine platform (1), and a motor 1 (6) is arranged on the crushing support plate (5). The telescopic shaft of the motor 1 (6) is connected to the primary crushing plate (7), and the primary crushing plate (7) is located inside the material box (4). A motor 2 (8) is arranged on the crushing support plate (5), and an intermediate crushing plate (9) is arranged on the telescopic shaft of the motor 2 (8). The intermediate crushing plate (9) is located in the crushing box (2) of the first group of crushing and separation units. Four groups of crushing rollers (10) are rotatably arranged in the crushing box (2) of the second group of crushing and separation units. A gear 1 (11) is arranged on the rotating shaft of the crushing roller (10). The four gears 1 (11) are meshed in sequence. The rotating shaft of the second crushing roller (10) is connected to the rotating shaft of the motor 3 (12), and the motor 3 (12) is fixedly arranged on the crushing support plate (5); A screen (13) is rotatably provided in each of the three crushing boxes (2), the screen (13) being used for screening and filtering sand material, a guide plate (14) is located below the screen (13), and the guide plate (14) is rotatably provided in the crushing box (2), a sand outlet (201) is provided on the side of the three crushing boxes (2), the sand outlet (201) is connected to the inlet of the sand outlet box (15), a stone outlet (202) is further provided on the side of the crushing box (2) of the third group of crushing and separation units, a stone outlet (202) is provided in the stone outlet (202), and the stone outlet box (16) is used for separating and discharging stone material; A dredging plate (17) is rotatably provided in the crushing box (2), and a row of bosses is provided on the dredging plate (17). The row of bosses of the dredging plate (17) is used to dredge the filter holes of the screen (13). A second gear (18) is provided on the rotating shaft of the screen (13), and a third gear (19) is provided on the rotating shaft of the dredging plate (17). The second gear (18) and the third gear (19) are meshed. The rotating shaft of the screen (13) is also provided with a twisting table (20), the twisting table (20) is provided with a boss, the twisting cylinder (21) is provided with an inclined groove (211), the boss of the twisting table (20) and the inclined groove (211) of the twisting cylinder (21) form a sliding fit, the twisting cylinder (21) is fixed on the horizontal strip plate (22), the horizontal strip plate (22) is slidably arranged on the middle frame (3), the two ends of the spring (23) are respectively connected to the middle frame (3) and the horizontal strip plate (22), the horizontal strip plate (22) is slidably provided with a slide rod (24), and the two ends of the slide rod (24) are provided with The gap plate (25) and the lock plate (26), the two ends of the spring (27) are respectively connected to the horizontal strip plate (22) and the gap plate (25), the lock block (28) is provided with an inclined surface, the lock plate (26) is used to drive the inclined surface of the lock block (28), and the lock block (28) is in contact with the horizontal strip plate (22), the lock block (28) is used to prevent the horizontal strip plate (22) from moving, the slide column of the lock block (28) is slidably arranged on the slide seat (29), the slide seat (29) is fixedly arranged on the crushing box (2), and the two ends of the spring (30) are respectively connected to the slide seat (29) and the lock block (28); The machine platform (1) is provided with a material changing support plate (31), and a motor four (32) is provided on the material changing support plate (31). The rotating shaft of the motor four (32) is connected to the main shaft (33), and the main shaft (33) is rotatably arranged on the material changing support plate (31). Three levers (34) are sequentially provided on the main shaft (33), and the three levers (34) are sequentially spaced 90 degrees apart. The levers (34) are used to drive the gap plate (25) to move. Gears (35) are respectively provided at both ends of the rotating shaft of the guide plate (14), the gears (35) mesh with the racks (36), the racks (36) are fixed on a collecting slide (37), the collecting slide (37) is slidably arranged on the crushing box (2), and a boss (38) is provided in the middle of the collecting slide (37); The main shaft (33) is provided with cam slot plates (39) in sequence, the three cam slot plates (39) are spaced 90 degrees apart in sequence, the cam slot plates (39) are provided with cam slots (391), and the cam slots (391) form a sliding fit with the boss (38).
2. The concrete sand and gravel crushing and separation equipment according to claim 1 is characterized by: The primary crushing plate (7) and the intermediate crushing plate (9) are provided with crushing cylinders, and the density of the crushing cylinders of the intermediate crushing plate (9) is greater than the density of the crushing cylinders of the primary crushing plate (7).
3. The concrete sand and gravel crushing and separation equipment according to claim 2 is characterized by: The crushing roller (10) is provided with crushing teeth, and the crushing teeth of two adjacent crushing rollers (10) are arranged alternately.