Concrete regeneration crushing and screening device

Abstract

The invention discloses a concrete recycling, crushing and screening device, and relates to the field of concrete crushing equipment, the concrete recycling, crushing and screening device comprises a crushing box and further comprises a screening box, the screening box is arranged in the crushing box, a blanking groove is formed in the top of the screening box, a screen is arranged in the blanking groove, a rotating roller is arranged above the screening box, and the rotating roller is arranged above the screening box. A plurality of crushing blocks are slidably arranged outside the rotating roller, a top plate is arranged on the sides, penetrating into the rotating roller, of the crushing blocks, a plurality of pressing blocks matched with the top plate are arranged outside the fixed cylinder, and the rotating roller extrudes and crushes falling concrete blocks by driving the crushing blocks to rotate; a conveying plate conveys concrete blocks which are not completely crushed upwards in a rotating mode, repeated crushing of the concrete blocks is achieved, a crushing plate crushes the concrete blocks in a mode of being matched with an extrusion groove, concrete is further crushed, and the subsequent using effect is better.

Description

Technical Field

[0001] The invention relates to the field of concrete crushing equipment, in particular to a concrete regeneration crushing and screening device. Background Art

[0002] Concrete recycling, also known as recycled concrete or recycled aggregate concrete, is an environmentally friendly and resource-efficient way of utilizing building materials. Abandoned concrete blocks are crushed, cleaned, and graded, then mixed with grading in a certain proportion to partially or completely replace natural aggregates such as sand and gravel (mainly coarse aggregate), and then added with cement, water, etc. to make new concrete.

[0003] When crushing discarded concrete blocks, the existing crushing device is usually composed of multiple groups of crushing rollers and screens. The crushing rollers rotate and crush the fallen concrete blocks. The structure of the crushing device is relatively simple. There are still large particles in the crushed concrete blocks. The concrete blocks cannot be crushed repeatedly, and the crushing effect is not good, which is not conducive to subsequent normal use. Summary of the invention

[0004] The purpose of the present invention is to provide a concrete regeneration crushing and screening device to solve the problem that the existing crushing and screening devices are inconvenient to use.

[0005] To achieve the above object, the present invention provides the following technical solutions: A concrete regeneration crushing and screening device comprises a crushing box and also comprises: A screening box, wherein a screening box is arranged inside the crushing box, a material dropping trough is provided on the top of the screening box, a screen is arranged inside the material dropping trough, a rotating roller is arranged above the screening box, a plurality of crushing blocks are slidably arranged outside the rotating roller, a top plate is arranged on the side where the crushing blocks penetrate into the rotating roller, a fixed cylinder is arranged inside the rotating roller, a plurality of pressing blocks matched with the top plate are arranged outside the fixed cylinder, sliding grooves are arranged outside the two rotating rollers, a slider is arranged inside the sliding groove, a conveying plate is arranged between the two sliders at both ends of the rotating roller, the conveying plate is rotatably connected with the slider, a card plate and a sleeve are respectively arranged on the side where the two conveying plates are close to each other, and a card block matched with the sleeve is arranged on the card plate; A crushing plate, a dust collecting box is arranged on the outer side wall of the crushing box, a guide plate is arranged inside the dust collecting box, a guide rail is arranged on the inner wall of the crushing box, support blocks are slidably arranged at both ends of the guide rail, transmission plates are arranged on the two support blocks, a cross beam is arranged between the two transmission plates, a movable plate is slidably arranged on the outer side wall of the crushing box, a bottom plate is rotatably arranged at the bottom of the movable plate, a plurality of extrusion grooves are opened on the top of the movable plate, a crushing plate matched with the extrusion groove is arranged on the side wall of the cross beam, a crushing plate is arranged on the side wall of the crushing plate, a return spring is arranged between the crushing plate and the cross beam, a limit plate is arranged outside the movable plate, and a fixed plate matched with the limit plate is arranged outside the transmission plate; A driving mechanism is arranged outside the crushing box; The lifting mechanism is arranged at the bottom of the screening box and connected to the crossbeam. The driving mechanism drives the two sets of rotating rollers inside the crushing box to rotate. The rotating rollers extrude and crush the fallen concrete blocks by driving the crushing blocks to rotate. The conveying plate conveys the incompletely crushed concrete blocks upward by rotating. The lifting mechanism drives the crossbeam and the crushing plate to descend, and the crushing plate crushes the concrete blocks by cooperating with the extrusion groove.

[0006] On the basis of the above technical solution, the present invention also provides the following optional technical solution: In an optional scheme: the driving mechanism includes a motor, a fixed frame, a transmission gear and a rotating rod, the crushing box is fixedly provided with a fixed frame outside, a fixed rod is provided on the fixed frame, the fixed rod penetrates into the rotating roller and is fixedly provided with a fixed cylinder, a rotating sleeve is rotatably provided outside the fixed rod, the rotating roller is fixed on the rotating sleeve, a transmission gear is provided outside the rotating sleeve, the two transmission gears are meshed with each other, a motor is provided outside the fixed frame, and a driving gear meshed with the transmission gear is provided at the rotating end of the motor.

[0007] In an optional solution: the lifting mechanism includes a cylinder and a telescopic rod, a cylinder is provided at the bottom of the screening box, a telescopic rod is provided at the telescopic end of the cylinder, the bottom end of the telescopic rod is connected to the cross beam, a guide rod is provided on the side wall of the movable plate, a connecting plate is provided at one end of the two guide rods passing through the crushing box, and a tension spring is provided on the outside of the guide rod.

[0008] In an optional solution: a feed plate is arranged on the top of the crushing box, a connecting plate is arranged inside the dust removal box, and a plurality of dust suction pipes are arranged on the connecting plate.

[0009] In an optional solution: a through slot is provided on the side wall of the screening box, a plurality of collecting slots are provided on the bottom of the screening box, and the through slot is communicated with the inside of the material guide plate.

[0010] In an optional solution: a groove is provided on the conveying plate, the clamping plate is slidably arranged inside the groove, and a telescopic spring is provided on the side wall of the clamping plate.

[0011] In an optional solution: a pull plate is provided on the outer side wall of the crushing box, and a collection box is provided on the pull plate.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: The concrete recycling, crushing and screening device can realize multi-stage screening and crushing of concrete blocks. The driving mechanism drives the two sets of rotating rollers inside the crushing box to rotate. The rotating rollers extrude and crush the fallen concrete blocks by driving the crushing blocks to rotate. The conveying plate conveys the incompletely crushed concrete blocks upward by rotating, thereby realizing repeated crushing of concrete blocks and preventing larger concrete blocks from affecting the subsequent use of the device. The lifting mechanism drives the crossbeam and the crushing plate to descend, and the crushing plate crushes the concrete blocks by cooperating with the extrusion groove, thereby further crushing the concrete and achieving better subsequent use effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the concrete recycling crushing and screening device.

[0014] Figure 2 It is a structural schematic diagram of the driving mechanism in the concrete recycling crushing and screening device.

[0015] Figure 3 This is a schematic diagram of the structure of the movable plate in the concrete recycling crushing and screening device.

[0016] Figure 4 This is a schematic diagram of the structure of the crossbeam in the concrete recycling crushing and screening device.

[0017] Figure 5 It is a cross-sectional view of the support block in the concrete recycling crushing and screening device.

[0018] Figure 6 It is a schematic diagram of the structure of the rotating roller in the concrete recycling crushing and screening device.

[0019] Figure 7 This is a schematic diagram of the structure of the block in the concrete recycling crushing and screening device.

[0020] Figure 8 It is a cross-sectional view of the rotating roller in the concrete recycling crushing and screening device.

[0021] Fig. 9 It is a cross-sectional view of the screening box in the concrete recycling crushing and screening device.

[0022] Fig.10 This is a schematic diagram of the structure of the conveying plate in the concrete recycling crushing and screening device.

[0023] Fig.11 This is a schematic diagram of the structure of the bottom plate in the concrete recycling crushing and screening device.

[0024] Fig.12 This is a schematic diagram of the structure of the sleeve in the concrete recycling crushing and screening device.

[0025] Figure numerals: 1-crushing box, 2-screening box, 201-feeding trough, 202-through trough, 203-collecting trough, 3-dust removal box, 4-feeding plate, 5-rotating roller, 501-sliding trough, 6-crushing block, 601-top plate, 7-conveying plate, 701-groove, 8-movable plate, 801-extrusion groove, 9-guide rod, 10-connecting plate, 11-tension spring, 12-connecting plate, 13-dust suction pipe, 14-guide plate, 15-bottom plate, 16-pull plate, 17-collecting box, 18-support block, 181-transmission plate Moving groove, 182-supporting groove, 19-guide rail, 20-limiting plate, 21-transmission plate, 22-transmission gear, 23-fixed frame, 24-motor, 25-rotating sleeve, 26-rotating rod, 27-driving gear, 28-cylinder, 29-telescopic rod, 30-crushing plate, 31-beam, 32-fixed plate, 33-crushing plate, 34-reset spring, 35-rotating shaft, 36-screen, 37-slider, 38-card plate, 381-card block, 39-telescopic spring, 40-sleeve, 41-fixed cylinder, 411-pressing block. DETAILED DESCRIPTION

[0026] 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.

[0027] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0028] like Figure 1-11 As shown, a concrete regeneration crushing and screening device provided by an embodiment of the present invention includes a crushing box 1 and also includes: Screening box 2, the crushing box 1 is provided with a screening box 2 inside, the top of the screening box 2 is provided with a material drop groove 201, the material drop groove 201 is two groups of semicircular grooves, the material drop groove 201 is provided with a screen 36 inside, a rotating roller 5 is provided above the screening box 2, and a plurality of crushing blocks 6 are slidably provided outside the two groups of rotating rollers 5, and a top plate 601 is provided on the side where the crushing blocks 6 penetrate into the rotating roller 5, a fixed cylinder 41 is provided inside the rotating roller 5, a spring is provided between the top plate 601 and the inner wall of the rotating roller 5, and the spring pulls the top plate 601 inwardly through the elastic force, so that one end of the top plate 601 is always in contact with the outer wall of the fixed cylinder 41, and the fixed cylinder 41 is provided with a plurality of The pressing block 411 matched with 601, the rotating roller 5 drives the top plate 601 to rotate. When the top plate 601 contacts the pressing block 411, the pressing block 411 presses the top plate 601 outward, so that the crushing block 6 pops out from the inside of the rotating roller 5. The concrete block passes between the two rotating rollers 5, and the crushing block 6 squeezes and crushes the concrete block. The two rotating rollers 5 are both provided with sliding grooves 501 on the outside. The sliding grooves 501 are provided with sliders 37 for sliding movement. A conveying plate 7 is provided between the two sliders 37 at both ends of the rotating roller 5. An elastic member is provided inside the sliding groove 501. The elastic member is a spring or a spring. The conveying plate 7 is in an initial position under the pull of the elastic member. The initial position is as shown in FIG. Fig.12 As shown, at this time, the conveying plate 7 is parallel to the sliding groove 501, and the larger concrete blocks inside the dropping groove 201 can be shoveled upward, so that the concrete blocks slide down from between the two rotating rollers 5 again, and the concrete blocks are repeatedly crushed, and the crushing effect is better. The conveying plate 7 is rotatably connected with the slider 37, and the two conveying plates 7 are respectively provided with a clamping plate 38 and a sleeve 40 on the side close to each other. The clamping plate 38 is provided with a clamping block 381 matched with the sleeve 40. The clamping block 381 is a spring piece, which can penetrate into the inside of the clamping plate 38 under a certain pressure. When the two conveying plates 7 are close to each other (such as Fig.10 As shown, the card plate 38 is inserted into the sleeve 40, and the card block 381 is inserted into the square hole in the sleeve 40. The card block 381 pops out of the square hole and connects the card plate 38 and the sleeve 40, so that the two conveying plates 7 are still in the horizontal direction when rising (as shown in FIG. Fig.11 As shown in the figure, the rotating roller 5 rotates upward, the two conveying plates 7 move away from each other, and the concrete block gradually falls from between the two conveying plates 7; A crushing plate 33, a dust removal box 3 is arranged on the outer wall of the crushing box 1, a guide plate 14 is arranged inside the dust removal box 3, the bottom of the screening box 2 is an inclined surface, and a plurality of collecting grooves 203 are vertically opened on the inclined surface. Concrete blocks of appropriate size fall into the collecting groove 203, and concrete blocks of larger size slide into the guide plate 14 along the inclined surface. The guide plate 14 guides the concrete blocks into the movable plate 8, which can further crush the concrete blocks and realize the screening of concrete blocks. A guide rail 19 is fixedly arranged on the inner wall of the crushing box 1, and support blocks 18 are slidably arranged at both ends of the guide rail 19. A connecting spring for driving the support block 18 to reset is arranged inside the guide rail 19, and a transmission plate 21 is slidably arranged on the two support blocks 18, and a support block 18 is opened on the support block 18 There is a transmission groove 181 matched with the transmission plate 21, a support groove 182 is provided at the bottom of the support block 18, a crossbeam 31 is horizontally arranged between the two transmission plates 21, a movable plate 8 is slidably arranged on the outer wall of the crushing box 1, a bottom plate 15 is rotatably arranged at the bottom of the movable plate 8, a plurality of extrusion grooves 801 are opened on the top of the movable plate 8, a crushing plate 30 matched with the extrusion groove 801 is provided on the side wall of the crossbeam 31, a crushing plate 33 is provided on the side wall of the crushing plate 30, and the crushing plate 33 is rotatably installed on the crushing plate 30 through the rotating shaft 5, a return spring 34 is arranged between the crushing plate 33 and the crossbeam 31, a limit plate 20 is arranged outside the movable plate 8, and a fixed plate 32 matched with the limit plate 20 is arranged outside the transmission plate 21; The transmission plate 21 is an inclined plate, and the transmission groove 181 fits with the transmission plate 21. When the two transmission plates 21 descend, the transmission plates 21 squeeze the two support blocks 18 closer to each other, and the support blocks 18 support the bottom plate 15 through the support groove 182 set at the bottom, so that the bottom plate 15 is in a horizontal position, and the concrete block cannot slide out of the squeeze groove 801. The crossbeam 31 drives the transmission plate 21 to rise, and the connecting spring pulls the support block 18 to reset (the two support blocks 18 move away from each other and slide towards the two ends of the guide rail 19). When the transmission plate 21 rises to a certain height, the bottom plate 15 can flip downward; The structure of the crushing plate 30, the limiting plate 20 and the extrusion groove 801 is as follows: Figure 3 As shown, the crossbeam 31 drives the crushing plate 30 and the fixed plate 32 to descend, the crushing plate 30 slides downward into the extrusion groove 801 and squeezes the concrete block to the right, one end of the crushing plate 33 contacts the top of the movable plate 8, so that the crushing plate 33 flips downward and crushes the concrete block in the extrusion groove 801, the crushing plate 30 gradually slides into the extrusion groove 801 and drives the movable plate 8 to move to the left, when the crossbeam 31 rises, the fixed plate 32 rises and clamps the limit plate 20, so that the movable plate 8 cannot be reset to the right, the crossbeam 31 reciprocates up and down, the crushing plate 33 crushes the concrete blocks in multiple extrusion grooves 801 in turn, the movable plate 8 gradually moves to the left, and when it moves to the leftmost end (as shown in FIG. Fig.11As shown in the figure, the crossbeam 31 rises to the highest point, so that the bottom plate 15 can be turned downward, the tension spring 11 drives the movable plate 8 to reset to the right, and the concrete blocks inside the extrusion groove 801 slide downward and are collected by the collection box 17; A driving mechanism is arranged outside the crushing box 1; The lifting mechanism is arranged at the bottom of the screening box 2 and connected to the crossbeam 31. The driving mechanism drives the two sets of rotating rollers 5 inside the crushing box 1 to rotate. The rotating rollers 5 squeeze and crush the fallen concrete blocks by driving the crushing blocks 6 to rotate. The conveying plate 7 conveys the incompletely crushed concrete blocks upward by rotating. The lifting mechanism drives the crossbeam 31 and the crushing plate 30 to descend, and the crushing plate 33 crushes the concrete blocks by cooperating with the extrusion groove 801.

[0029] like Figure 1-2 As shown, as a preferred embodiment of the present invention, the driving mechanism includes a motor 24, a fixed frame 23, a transmission gear 22 and a rotating rod 26. The fixed frame 23 is fixedly arranged on the back of the crushing box 1, and the fixed frame 23 is fixedly arranged with a fixed rod 26. The fixed rod 26 penetrates into the interior of the rotating roller 5 and is fixedly arranged with a fixed cylinder 41, that is, the fixed rod 26 and the fixed cylinder 41 cannot rotate. A rotating sleeve 25 is rotatably arranged outside the fixed rod 26, and the rotating roller 5 is fixedly arranged on the rotating sleeve 25, that is, the rotating roller 5 can rotate along the fixed rod 26. A transmission gear 22 is arranged outside the rotating sleeve 25, and the two transmission gears 22 are meshed with each other. The fixed frame 23 is provided with a motor 24 outside, and the rotating end of the motor 24 is provided with a driving gear 27 meshing with the transmission gear 22. The motor 24 drives the transmission gear 22 to rotate, and the transmission gear 22 drives the rotating sleeve 25 and the rotating roller 5 to rotate.

[0030] like Figure 1-5 As shown, as a preferred embodiment of the present invention, the lifting mechanism includes a cylinder 28 and a telescopic rod 29, the bottom of the screening box 2 is provided with a cylinder 28, the telescopic end of the cylinder 28 is provided with a telescopic rod 29, the bottom end of the telescopic rod 29 is connected to the cross beam 31, the side wall of the movable plate 8 is provided with a guide rod 9, the two ends of the guide rods 9 passing through the crushing box 1 are provided with a connecting plate 10, the outer side of the guide rod 9 is provided with a tension spring 11, and the cylinder 28 drives the cross beam 31 to move up and down through the telescopic rod 29.

[0031] like Figure 1-2 As shown, as a preferred embodiment of the present invention, a feed plate 4 is arranged on the top of the crushing box 1, a connecting plate 12 is arranged inside the dust removal box 3, a plurality of dust suction pipes 13 are arranged on the connecting plate 12, and a vacuum cleaner is connected to the connecting plate 21 to suck out the dust inside the crushing box 1.

[0032] like Fig. 9 As shown, as a preferred embodiment of the present invention, a through slot 202 is provided on the side wall of the screening box 2 , and a plurality of collecting slots 203 are provided on the bottom of the screening box 2 . The through slot 202 is connected to the inside of the guide plate 14 .

[0033] like Figure 7 As shown, as a preferred embodiment of the present invention, grooves 701 are provided on both sides of the outer side of the conveying plate 7, the clamping plate 38 is slidably arranged inside the groove 701, and the side wall of the clamping plate 38 is provided with a telescopic spring 39 for resetting.

[0034] like Figure 1 As shown, as a preferred embodiment of the present invention, the outer side wall of the crushing box 1 is provided with a pull plate 16 , and the pull plate 16 is provided with a collection box 17 .

[0035] The above embodiment of the present invention provides a concrete recycling crushing and screening device, wherein concrete blocks to be crushed are placed into the crushing box 1 along the feed plate 4, the motor 24 drives the rotating roller 5 to rotate through the meshing of two sets of transmission gears 22, the rotating roller 5 squeezes and crushes the fallen concrete blocks through a plurality of crushing blocks 6 arranged outside, the concrete blocks that are not completely crushed stay in the drop chute 201, the conveying plate 7 scoops up the concrete blocks, and the concrete blocks slide down from between the two rotating rollers 5 again, thereby achieving repeated crushing of the concrete blocks, the concrete blocks of appropriate sizes fall into the collecting chute 203, the concrete blocks of larger sizes fall into the movable plate 8 along the guide plate 14, the crossbeam 31 drives the crushing plate 30 to descend, the crushing plate 33 flips downward and crushes the concrete blocks in the extrusion chute 801, and when the movable plate 8 moves to the leftmost end (such as Fig.11 As shown in the figure), the cylinder 28 drives the cross beam 31 to rise to the highest point, so that the bottom plate 15 can be turned downward, and the concrete blocks inside the extrusion groove 801 slide downward and are collected by the collection box 17.

[0036] The above is only a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A concrete regeneration crushing and screening device, comprising a crushing box, characterized in that: Also includes: A screening box, wherein a screening box is arranged inside the crushing box, a material dropping trough is provided on the top of the screening box, a screen is arranged inside the material dropping trough, a rotating roller is arranged above the screening box, a plurality of crushing blocks are slidably arranged outside the rotating roller, a top plate is arranged on the side where the crushing blocks penetrate into the rotating roller, a fixed cylinder is arranged inside the rotating roller, a plurality of pressing blocks matched with the top plate are arranged outside the fixed cylinder, sliding grooves are arranged outside the two rotating rollers, a slider is arranged inside the sliding groove, a conveying plate is arranged between the two sliders at both ends of the rotating roller, the conveying plate is rotatably connected with the slider, a card plate and a sleeve are respectively arranged on the side where the two conveying plates are close to each other, and a card block matched with the sleeve is arranged on the card plate; A crushing plate, a dust collecting box is arranged on the outer side wall of the crushing box, a guide plate is arranged inside the dust collecting box, a guide rail is arranged on the inner wall of the crushing box, support blocks are slidably arranged at both ends of the guide rail, transmission plates are arranged on the two support blocks, a cross beam is arranged between the two transmission plates, a movable plate is slidably arranged on the outer side wall of the crushing box, a bottom plate is rotatably arranged at the bottom of the movable plate, a plurality of extrusion grooves are opened on the top of the movable plate, a crushing plate matched with the extrusion groove is arranged on the side wall of the cross beam, a crushing plate is arranged on the side wall of the crushing plate, a return spring is arranged between the crushing plate and the cross beam, a limit plate is arranged outside the movable plate, and a fixed plate matched with the limit plate is arranged outside the transmission plate; A driving mechanism is arranged outside the crushing box; The lifting mechanism is arranged at the bottom of the screening box and connected to the crossbeam. The driving mechanism drives the two sets of rotating rollers inside the crushing box to rotate. The rotating rollers extrude and crush the fallen concrete blocks by driving the crushing blocks to rotate. The conveying plate conveys the incompletely crushed concrete blocks upward by rotating. The lifting mechanism drives the crossbeam and the crushing plate to descend, and the crushing plate crushes the concrete blocks by cooperating with the extrusion groove.

2. The concrete regeneration crushing and screening device according to claim 1 is characterized in that: The driving mechanism includes a motor, a fixed frame, a transmission gear and a rotating rod. The crushing box is fixedly provided with a fixed frame outside, and a fixed rod is provided on the fixed frame. The fixed rod penetrates into the rotating roller and is fixedly provided with a fixed cylinder. A rotating sleeve is rotatably provided outside the fixed rod. The rotating roller is fixed on the rotating sleeve. A transmission gear is provided outside the rotating sleeve. The two transmission gears are meshed with each other. A motor is provided outside the fixed frame, and a driving gear meshed with the transmission gear is provided at the rotating end of the motor.

3. The concrete regeneration crushing and screening device according to claim 1 is characterized in that: The lifting mechanism includes a cylinder and a telescopic rod. The bottom of the screening box is provided with a cylinder, the telescopic end of the cylinder is provided with a telescopic rod, the bottom end of the telescopic rod is connected to the cross beam, the side wall of the movable plate is provided with a guide rod, the ends of the two guide rods passing through the crushing box are provided with connecting plates, and the guide rods are externally sleeved with a tension spring.

4. The concrete regeneration crushing and screening device according to claim 2, characterized in that: A feeding plate is arranged on the top of the crushing box, a connecting plate is arranged inside the dust removal box, and a plurality of dust suction pipes are arranged on the connecting plate.

5. The concrete regeneration crushing and screening device according to claim 3, characterized in that: A through slot is provided on the side wall of the screening box, and a plurality of collecting slots are provided on the bottom of the screening box. The through slot is communicated with the inside of the material guide plate.

6. The concrete regeneration crushing and screening device according to claim 1, characterized in that: The conveying plate is provided with a groove, the clamping plate is slidably arranged inside the groove, and a telescopic spring is arranged on the side wall of the clamping plate.

7. The concrete regeneration crushing and screening device according to claim 1, characterized in that: The outer side wall of the crushing box is provided with a pulling plate, and the pulling plate is provided with a collecting box.

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