A waste shredding device for construction.

Abstract

This invention discloses a waste crushing device for construction, relating to the field of construction waste treatment technology. It features an orthogonal dynamic shearing assembly with four sets of cutter discs symmetrically distributed in a square, forming an orthogonal dynamic shearing mechanism. This allows the construction waste to be subjected to multi-directional shearing forces during crushing, avoiding material jamming caused by unidirectional force. Each set of sleeve shafts is driven by an independent hydraulic motor. When one side of the cutter disc encounters a reinforcing bar, the hydraulic system controls the motors on both sides to rotate in opposite directions, generating a reverse shearing force to cut the reinforcing bar. This reverse movement function prevents reinforcing bar jamming, reduces equipment failure, and avoids accelerated wear of the cutter discs due to forced compression. The sleeve shafts on both sides can rotate independently or move in opposite directions. When the material shape is irregular, the cutter discs on both sides can automatically adjust the force angle, preventing local overload. The electric cylinder drives the cutter discs to move back and forth, allowing real-time adjustment of the axial position of the cutter disc assembly.

Description

Technical Field

[0001] This invention relates to the field of construction waste treatment technology, specifically to a waste crushing device used in construction. Background Technology

[0002] Construction waste refers to the general term for slag, waste concrete, waste bricks and stones, and other waste generated during the production activities of the construction industry, such as demolition, construction, decoration, and repair. According to the source of generation, construction waste can be divided into engineering slag, decoration waste, demolition waste, engineering mud, etc. According to the composition, construction waste can be divided into slag, concrete blocks, crushed stone blocks, brick and tile fragments, waste mortar, mud, asphalt blocks, waste plastics, waste metals, waste bamboo and wood, etc.

[0003] Construction waste shredding equipment is a type of mechanical equipment specifically designed to process construction waste. Its core function is to shred large solid wastes generated during construction, such as concrete blocks, bricks, wood, metal scraps, and plastics, into smaller particles for easier recycling. This type of equipment plays an important role in environmental protection and resource recycling.

[0004] However, the existing waste shredding device used in construction has the following shortcomings:

[0005] Conventional equipment typically uses a single shearing or impact method to crush construction waste. Relying solely on the meshing shearing of the cutter head, it requires multiple shearing passes to break large pieces of concrete, resulting in low processing efficiency. Furthermore, it cannot effectively cut large-diameter steel bars, leading to entanglement of the cutter shaft. In addition, traditional hammer crushers are only suitable for crushing concrete but lack the shearing ability for steel bars, causing them to become entangled in the main shaft and resulting in machine shutdown. In such cases, manual cleaning is necessary, further impacting work efficiency and significantly increasing labor costs. Moreover, it cannot dynamically adjust the power according to the hardness of the material, as the hammer speed of a conventional hammer crusher is fixed and cannot be adjusted when processing different materials.

[0006] Therefore, we propose a waste shredding device for construction projects to address the problems mentioned above. Summary of the Invention

[0007] The purpose of this invention is to provide a waste crushing device for construction, featuring an orthogonal dynamic shearing assembly with four sets of cutter discs symmetrically distributed in a square, forming an orthogonal dynamic shearing mechanism. This allows the construction waste to be subjected to multi-directional shearing forces during crushing, avoiding material jamming caused by unidirectional force. Furthermore, each set of sleeve shafts is driven by an independent hydraulic motor. When one side of the cutter disc encounters a reinforcing bar, the hydraulic system can control the motors on both sides to rotate in opposite directions, generating a reverse shearing force to cut the reinforcing bar. This reverse motion function prevents reinforcing bar jamming, reduces equipment failure, and avoids accelerated wear of the cutter discs due to forced compression.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a waste crushing device for construction, comprising a base, the top of which is provided with two first support plates and two second support plates, and two sets of orthogonal dynamic shearing components are installed between the tops of the two first support plates and the two second support plates, and the four sets of orthogonal dynamic shearing components are symmetrically distributed in a square, and a main shaft hammering component is installed between the outer walls of the four sets of orthogonal dynamic shearing components;

[0009] The orthogonal dynamic shearing assembly includes two hydraulic motors and two sleeve shafts. The two hydraulic motors are used to provide power drive. Metal support plates are bolted between the inner surfaces of the two sleeve shafts. Electric cylinders are installed on one side of the outer wall of the two metal support plates. The two electric cylinders are used to adjust the axial position of the two sleeve shafts.

[0010] The main shaft hammering assembly includes a gear reducer and hammers. The gear reducer is used to provide high torque output, and a set of hammers is used to strike materials.

[0011] Preferably, a set of frames is fixedly connected to the top of the base, a crushing chamber is bolted to the top of the set of frames, a feed inlet is connected to the top of the crushing chamber, two sets of brackets are connected to the top of the set of bases, the tops of the two sets of brackets are connected to the bottoms of the two first support plates, the outer walls of the two sets of brackets are connected to the outer walls of the two second support plates, and the tops of the two first support plates and the two second support plates are respectively connected to the bottom of a corresponding hydraulic motor.

[0012] Preferably, both sides of the outer wall of the two hydraulic motors are provided with an oil drain port and an oil inlet port. The inlet ends of the two oil inlets are connected to directional valves, which are used to control the flow direction of hydraulic oil. One end of the outer wall of each of the two directional valves is connected to an overflow valve, which is used to limit the maximum system pressure. One end of the outer wall of each of the two overflow valves is connected to a high-pressure filter, which is used to filter impurities in the hydraulic oil. A first speed sensor is installed on one side of the outer wall of each of the two hydraulic motors, which is used to provide real-time feedback of the speed.

[0013] Preferably, the output ends of the two hydraulic motors are connected to drive shafts, and the outer surfaces of the two drive shafts are fitted with hydraulic couplers for the shock buffer protection system. The outer surfaces of the two drive shafts are fitted with pressure sensors for real-time pressure detection.

[0014] Preferably, the outer surfaces of both drive shafts are fitted with first bearing seats, and the two first bearing seats are respectively installed on both sides of the outer wall of the crushing chamber. The output ends of both drive shafts are rotatably connected to a corresponding sleeve shaft.

[0015] Preferably, the outer surfaces of both sleeve shafts are movably fitted with slides, the bottom and top of both sleeve shafts are provided with grooves, and the inner surfaces of the two slides are bolted together with connecting plates.

[0016] Preferably, the two connecting plates extend through corresponding slots into the interior of the two sleeve shafts, the shaft ends of the two electric cylinders are connected to one side of the outer wall of a corresponding connecting plate, a set of fixing seats is fitted on the outer surface of each of the two slides, a cutter disc is fixedly embedded on the outer surface of each of the two sets of fixing seats, a roller bearing is connected to one side of the outer wall of each of the two sleeve shafts, and a fixing sleeve is fitted on the outer surface of each of the two roller bearings.

[0017] Preferably, the spindle hammer assembly further includes a support platform, a servo motor is fixedly installed on the top of the support platform, the bottom of the support platform is connected to the top of the base, the output end of the servo motor is rotatably connected to an input shaft, and the output end of the input shaft is rotatably connected to one end of the outer wall of the gear reducer.

[0018] Preferably, the output end of the gear reducer is connected to a main shaft, and two second bearing seats are sleeved on the outer surface of the main shaft. The two second bearing seats are respectively installed on both sides of the outer wall of the crushing chamber.

[0019] Preferably, the output end of the main shaft is rotatably connected to a connecting shaft, the outer surface of the connecting shaft is fitted with a metal support seat, the outer surface of the metal support seat is bolted to a set of metal fixing discs, the outer walls of the set of metal fixing discs are movably connected to a set of hammers, and the outer surface of the main shaft is fitted with a second speed sensor, which is used to monitor the main shaft speed in real time.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. In this invention, by setting up an orthogonal dynamic shearing assembly, four sets of cutter discs are symmetrically distributed in a square to form an orthogonal dynamic shearing mechanism. This enables construction waste to be subjected to multi-directional shearing forces during crushing, avoiding material jamming caused by unidirectional force. Each set of sleeve shafts is driven by an independent hydraulic motor. When one side of the cutter disc encounters a steel bar, the hydraulic system can control the motors on both sides to rotate in opposite directions, forming a reverse shearing force to cut the steel bar. The reverse movement function can prevent steel bar jamming, reduce equipment failure, and avoid accelerated wear of the cutter discs due to forced compression. The sleeve shafts on both sides can rotate independently or move in opposite directions. When the material shape is irregular, the cutter discs on both sides can automatically adjust the force angle to avoid local overload. The electric cylinder drives the cutter discs to move back and forth, which can adjust the axial position of the cutter disc assembly in real time. Furthermore, the hydraulic coupling automatically slips when encountering sudden overload, preventing damage to the motor or gearbox.

[0022] 2. In this invention, by setting up a main shaft hammering assembly, when the material enters the crushing chamber, it is first struck by the high-speed rotation of the hammer head, which can initially crush materials such as concrete blocks and bricks, and then enter the sleeve shaft shearing zone for shearing. This can avoid large pieces of material directly entering the shearing zone and causing the cutter head to overload, thereby improving the shearing efficiency. The centrifugal force generated by the rotation of the hammer head throws the material to the surrounding sleeve shaft area, forming a compound effect with the shearing force of the four sets of cutter heads. At the same time, the servo motor transmits power to the gear reducer to achieve precise adjustment of the hammer head speed. The gear reducer provides a large torque output to ensure the hammer head's impact effect on hard materials, while reducing the motor load. Attached Figure Description

[0023] Figure 1 This is a perspective view of the main structure of a waste shredding device for building construction according to the present invention;

[0024] Figure 2 This is a side view perspective of a waste shredding device for building construction according to the present invention;

[0025] Figure 3 This is a three-dimensional cross-sectional view of a waste crushing device for building construction according to the present invention.

[0026] Figure 4 This is a diagram showing the positional relationship between the orthogonal dynamic shearing component and the first support plate in a waste shredding device for building construction according to the present invention.

[0027] Figure 5 This is a three-dimensional view of the orthogonal dynamic shearing component structure in a waste shredding device for building construction according to the present invention;

[0028] Figure 6 This is a schematic diagram of the installation positions of the directional valve, overflow valve, and high-pressure filter in a waste shredding device for building construction according to the present invention.

[0029] Figure 7 The diagram shows the installation positions of the drive shaft, the first bearing seat, and the pressure sensor in a waste shredding device for building construction according to the present invention.

[0030] Figure 8 This is an exploded view of the orthogonal dynamic shearing component structure in a waste shredding device for building construction according to the present invention;

[0031] Figure 9 This is a three-dimensional view of the main shaft hammer assembly structure in a waste crushing device for building construction according to the present invention;

[0032] Figure 10 The diagram shows the structural arrangement of the metal support base, metal fixing plate, and hammer head installation position in a waste crushing device for construction according to the present invention.

[0033] Figure 11 This invention relates to a waste shredding device for construction. Figure 10 Enlarged view of structure A in the image.

[0034] In the diagram: 100, base; 200, frame; 300, crushing chamber; 400, feed inlet; 500, bracket; 600, first support plate; 700, first support plate; 800, orthogonal dynamic shearing assembly; 801, hydraulic motor; 802, oil drain port; 803, oil inlet; 804, directional valve; 805, overflow valve; 806, high-pressure filter; 807, first speed sensor; 808, drive shaft; 809, hydraulic coupler; 810, first bearing housing; 811, sleeve shaft; 81 2. Metal support plate; 813. Electric cylinder; 814. Slide; 815. Connecting plate; 816. Fixed seat; 817. Cutter head; 818. Roller bearing; 819. Fixed sleeve; 820. Pressure sensor; 900. Spindle hammer assembly; 901. Loading platform; 902. Servo motor; 903. Input shaft; 904. Gear reducer; 905. Spindle; 906. Second bearing seat; 907. Metal support seat; 908. Metal fixed plate; 909. Hammer head; 910. Second speed sensor. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] In embodiments of the present invention, please refer to the appendix. Figure 1 - Appendix Figure 4 As shown, the present invention provides a technical solution: a waste crushing device for construction, including a base 100, two first support plates 600 and two second support plates 700 respectively provided on the top of the base 100, two sets of orthogonal dynamic shearing components 800 are installed between the tops of the two first support plates 600 and the two second support plates 700, and the four sets of orthogonal dynamic shearing components 800 are symmetrically distributed in a square, and a main shaft hammering component 900 is installed between the outer walls of the four sets of orthogonal dynamic shearing components 800.

[0037] A set of frames 200 is fixedly connected to the top of the base 100. A crushing chamber 300 is bolted to the top of the set of frames 200. A feed inlet 400 is connected to the top of the crushing chamber 300. Two sets of supports 500 are connected to the top of the set of base 100. The tops of the two sets of supports 500 are connected to the bottoms of the two first support plates 600. The outer walls of the two sets of supports 500 are connected to the outer walls of the two second support plates 700. The tops of the two first support plates 600 and the two second support plates 700 are respectively connected to the bottom of a corresponding hydraulic motor 801.

[0038] Specifically: First, based on the construction site plan, determine the installation position of the base 100, ensuring the ground is flat and has sufficient load-bearing capacity. Workers can use a level to calibrate the base's installation plane, ensuring no horizontal or vertical deviations to prevent vibration and displacement during equipment operation. The base 100 is then fixed to the ground using expansion bolts, with at least two fixing points at each corner of the base 100. After fixing, check the fit between the base 100 and the ground, filling any gaps with high-strength grout to ensure even weight distribution and provide stable support for the first support plate 600, the second support plate 700, and subsequent components. Then, construction waste is uniformly poured into the crushing chamber 300 through the feed inlet 400. The external power supply is connected, and the main shaft hammer assembly 900 is started. The servo motor 902 transmits power to the main shaft 905 via the gear reducer 904, which in turn drives the hammer head 909 to rotate. The hammer 909, made of high wear-resistant alloy, uses centrifugal force to throw the material against the wear-resistant liner on the inner wall of the crushing chamber 300, while simultaneously striking the material directly to break it apart, achieving initial separation of concrete and reinforcing steel. When the initially crushed material falls into the area of ​​the four sets of orthogonal dynamic shearing components 800, the hydraulic system is activated. The independent hydraulic motors 801 on both sides of each set of sleeve shafts 811 drive the cutter discs 817 to rotate. Adjacent cutter discs can be set to rotate in opposite directions, and the PLC control system adjusts them in real time. The electric cylinders 813 on the inner surface of the sleeve shafts 811 push the cutter discs 817 to move back and forth along the axial direction according to the material particle size signal, which can dynamically adjust the cutting plane angle to adapt to the shearing requirements of different materials. The cutter discs 817 are equipped with serrated blades on the edge, which, together with the orthogonally arranged shearing structure, can further crush the material. The reinforcing steel is sheared into short strips, and the concrete blocks are refined into granules. The crushed material is discharged through the discharge port at the bottom of the crushing chamber 300.

[0039] In some embodiments, according to Figures 1-8 As shown, the orthogonal dynamic shear assembly 800 includes two hydraulic motors 801 and two sleeve shafts 811. The two hydraulic motors 801 are used to provide power drive. Metal support plates 812 are bolted between the inner surfaces of the two sleeve shafts 811. Electric cylinders 813 are installed on one side of the outer wall of the two metal support plates 812. The two electric cylinders 813 are used to adjust the axial position of the two sleeve shafts 811.

[0040] Both sides of the outer wall of the two hydraulic motors 801 are provided with an oil drain port 802 and an oil inlet port 803. The oil inlet end of the two oil inlets 803 is connected to a directional valve 804. The two directional valves 804 are used to control the flow direction of the hydraulic oil. One end of the outer wall of the two directional valves 804 is connected to a relief valve 805. The two relief valves 805 are used to limit the maximum pressure of the system. One end of the outer wall of the two relief valves 805 is connected to a high-pressure filter 806. The two high-pressure filters 806 are used to filter impurities in the hydraulic oil. A first speed sensor 807 is installed on one side of the outer wall of the two hydraulic motors 801. The two first speed sensors 807 are used to provide real-time feedback of the speed.

[0041] The output ends of the two hydraulic motors 801 are connected to drive shafts 808. The outer surfaces of the two drive shafts 808 are fitted with hydraulic couplers 809. The two hydraulic couplers 809 are used for the shock buffer protection system. The outer surfaces of the two drive shafts 808 are fitted with pressure sensors 820. The two pressure sensors 820 are used for real-time detection of pressure changes.

[0042] The outer surfaces of the two drive shafts 808 are fitted with first bearing seats 810, and the two first bearing seats 810 are respectively installed on both sides of the outer wall of the crushing chamber 300. The output ends of the two drive shafts 808 are rotatably connected to a corresponding sleeve shaft 811.

[0043] Both sleeve shafts 811 have slides 814 movably fitted on their outer surfaces. Both sleeve shafts 811 have grooves at their bottom and top. Both slides 814 have connecting plates 815 bolted between their inner surfaces.

[0044] Two connecting plates 815 extend through corresponding slots into the interior of two sleeve shafts 811. The shaft ends of two electric cylinders 813 are connected to one side of the outer wall of a corresponding connecting plate 815. A set of fixed seats 816 is fitted on the outer surface of each of the two slide blocks 814. A cutter disc 817 is fixedly embedded on the outer surface of each of the two sets of fixed seats 816. Roller bearings 818 are connected to one side of the outer wall of each of the two sleeve shafts 811. Fixed sleeves 819 are fitted on the outer surface of each of the two roller bearings 818.

[0045] The overall effect of this embodiment is as follows: The above components form a complete orthogonal dynamic shearing assembly 800. When material is fed into the equipment through the feed inlet 400, it first enters the area of ​​the main shaft hammer assembly 900. The servo motor 902 starts at its rated speed, and through the gear reducer 904, the power is stably transmitted to the main shaft 905, driving the high-mass hammer 909 to rotate at high speed. Under the action of centrifugal force, the hammer 909 throws the material at high speed towards the four sets of orthogonal dynamic shearing assemblies 800. This material will form a spiral motion trajectory within the crushing chamber, ensuring uniform distribution to the shearing area. Four sets of orthogonal dynamic shearing components 800 are arranged in a three-dimensional cross shape, forming a square cutting area with sleeve shafts 811 and cutter heads 817. Each cutter head 817 is synchronously driven by diagonally distributed sleeve shafts 811, forming a vertically and horizontally symmetrical shearing matrix. Each sleeve shaft 811 is equipped with an independent hydraulic motor 801, which transmits power through a hydraulic coupler 809. The hydraulic coupler 809 uses silicone oil as the transmission medium. When the instantaneous torque is too large, the viscosity of the silicone oil increases sharply, forming a buffer layer that can absorb overload energy in a very short time, thereby effectively protecting the hydraulic motor 801 during the cutting process. In this process, the electric cylinder 813, installed on the inner surface of the sleeve shaft 811, plays a crucial role. This electric cylinder 813 employs servo closed-loop control and can drive the cutter head 817 to complete axial displacement according to a preset program or real-time working conditions, achieving dynamic adjustment of the cutting plane. When encountering high-strength materials such as steel bars, the pressure sensor 820 detects a sudden pressure increase and immediately transmits the signal to the PLC control system. After processing by the PID algorithm, the system controls the electro-hydraulic proportional directional valve 804 to switch the oil circuit, causing the hydraulic motor 801 to reverse. Combined with the instantaneous system pressure, this generates a powerful shearing force, thereby quickly cutting the steel. The first speed sensor 807 monitors the speed of the cutter head 817 in real time. When the speed drops below the set threshold, the system first increases the flow rate of the hydraulic system. Then, the electric cylinder 813 drives the cutter head 817 to move backward, expanding the material passage. The high-pressure filter 806 uses a high-precision filter element to intercept particulate impurities. When the system pressure exceeds the preset threshold of the overflow valve 805, the valve opens internally to relieve the load and prevent the pipeline from bursting. In addition, the metal support plate 812 is made of high-strength alloy steel and can withstand strong radial loads. The crushed material is finally discharged through the discharge port at the bottom of the crushing chamber 300.

[0046] The orthogonal dynamic shearing assembly 800 features four sets of cutter discs 817 symmetrically distributed in a square, forming an orthogonal dynamic shearing mechanism. This allows the construction waste to be subjected to multi-directional shearing forces during crushing, preventing material jamming caused by unidirectional force. Each set of sleeve shafts 811 is driven by an independent hydraulic motor 801. When one side of the cutter disc 817 encounters a reinforcing bar, the hydraulic system can control the two motors 801 to rotate in opposite directions, generating a reverse shearing force to cut the reinforcing bar. This reverse motion function prevents the reinforcing bar from jamming, reduces equipment failure, and avoids accelerated wear of the cutter discs 817 due to forced compression. The two sleeve shafts 811 can rotate independently or move in opposite directions. When the material shape is irregular, the two cutter discs 817 can automatically adjust the force angle to avoid local overload. The electric cylinder 813 drives the cutter discs 817 to move back and forth, adjusting the axial position of the cutter disc 817 set in real time. Furthermore, the hydraulic coupler 809 automatically slips in the event of a sudden overload, preventing damage to the motor or gearbox.

[0047] according to Figures 1-3 as well as Figures 9-11 As shown, the spindle hammer assembly 900 includes a gear reducer 904 and hammers 909. The gear reducer 904 is used to provide high torque output, and a set of hammers 909 is used to strike materials.

[0048] The spindle hammer assembly 900 also includes a support platform 901. A servo motor 902 is fixedly installed on the top of the support platform 901. The bottom of the support platform 901 is connected to the top of the base 100. The output end of the servo motor 902 is rotatably connected to an input shaft 903. The output end of the input shaft 903 is rotatably connected to one end of the outer wall of the gear reducer 904.

[0049] The output end of the gear reducer 904 is connected to the main shaft 905. Two second bearing seats 906 are sleeved on the outer surface of the main shaft 905. The two second bearing seats 906 are respectively installed on both sides of the outer wall of the crushing chamber 300.

[0050] The output end of the spindle 905 is rotatably connected to a connecting shaft. A metal support seat 907 is sleeved on the outer surface of the connecting shaft. A set of metal fixing discs 908 are bolted to the outer surface of the metal support seat 907. A set of hammers 909 are movably connected between the outer walls of the set of metal fixing discs 908. A second speed sensor 910 is sleeved on the outer surface of the spindle 905, and the second speed sensor 910 is used to monitor the speed of the spindle 905 in real time.

[0051] The overall effect of this embodiment is as follows: The above components form a complete spindle hammer assembly 900. First, it is connected to the main control distribution box of the equipment via an external power supply to ensure stable power supply voltage. At this time, workers can uniformly pour construction waste, such as discarded concrete blocks and reinforced building materials, into the crushing chamber 300 through the funnel-shaped feed inlet 400. During the feeding process, the wear-resistant lining plates on the inner wall of the crushing chamber 300 have already been installed and adjusted to provide wear protection for subsequent impact crushing. Then, the spindle hammer assembly 900 is started and installed on the top of the support platform 901. The servo motor 902 converts electrical energy into mechanical energy, driving the input shaft 903 to rotate at a constant angular velocity. The input shaft 903 transmits power to the gear reducer 904, which amplifies the output torque through the meshing of the involute helical gear pair, thereby meeting the subsequent crushing requirements of high-hardness materials. The gear reducer 904 has a built-in pressure sensor that automatically triggers overload protection when the load exceeds the rated value. The output end of the gear reducer 904 is connected to the main shaft 905 via a spline. Two second bearing seats 906 sleeved on the outer surface of the main shaft 905 are respectively fixed to the crushing chamber 30. The two side walls are lubricated with grease to ensure the stability of the spindle 905. A second speed sensor 910 is installed on the outer surface of the spindle 905 to monitor the speed data in real time. When the speed fluctuates, the system automatically adjusts the output power of the servo motor. The output end of the spindle 905 is connected to the shaft via a coupling. A metal support 907 fitted on its outer surface is fixed to two sets of metal fixed discs 908 by high-strength bolts. A set of hammers 909 are connected between the metal fixed discs 908 by a pin, forming a rotatable hammer array with a centrifugal crushing mechanism. When the spindle 905 reaches the preset speed... At this time, the hammer 909 generates radial impact force due to centrifugal force, throwing the material towards the wear-resistant liner plate on the inner wall of the crushing chamber 300. At the same time, the hammer 909 directly hits the material, causing the concrete to crack and achieving initial separation from the reinforcing steel. The initially crushed material is scattered into the area of ​​four sets of orthogonal dynamic shear components 800. The four sets of orthogonal dynamic shear components 800 are arranged in a three-dimensional cross shape, with the sleeve shaft 811 and the cutter head 817 forming a square cutting area. Each cutter head 817 is synchronously driven by the diagonally distributed sleeve shaft 811, forming a symmetrical shearing matrix.

[0052] The main shaft hammer assembly 900 is designed so that when material enters the crushing chamber 300, it is first struck by the high-speed rotating hammer head 909, which can initially crush materials such as concrete blocks and bricks. Then, it enters the shearing zone of the sleeve shaft 811 for shearing. This avoids large pieces of material directly entering the shearing zone, which would cause the cutter head 817 to overload, thus improving shearing efficiency. The centrifugal force generated by the rotation of the hammer head 909 throws the material to the surrounding sleeve shaft 811 area, forming a compound effect with the shearing force of the four sets of cutter heads 817. At the same time, the servo motor 902 transmits power to the gear reducer 904 to achieve precise adjustment of the hammer head 909 speed. The gear reducer 904 provides a large torque output to ensure the impact effect of the hammer head 909 on hard materials, while reducing the load on the servo motor 902.

[0053] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A waste shredding device for construction, comprising a base (100), characterized in that: The base (100) is provided with two first support plates (600) and two second support plates (700) on its top. Two sets of orthogonal dynamic shearing components (800) are installed between the tops of the two first support plates (600) and the two second support plates (700). The four sets of orthogonal dynamic shearing components (800) are symmetrically distributed in a square. A main shaft hammering component (900) is installed between the outer walls of the four sets of orthogonal dynamic shearing components (800). The orthogonal dynamic shearing assembly (800) includes two hydraulic motors (801), two sleeve shafts (811), two slides (814), two connecting plates (815), and two sets of cutter discs (817). The two hydraulic motors (801) provide power to drive the two sleeve shafts (811) to rotate. The bottom and top of the two sleeve shafts (811) are provided with grooves. The two slides (814) are respectively movably sleeved on the outer surface of the two sleeve shafts (811). The two connecting plates (815) pass through... The corresponding grooves are cut and bolted to the two slides (814) respectively. Metal support plates (812) are bolted between the inner surfaces of the two sleeve shafts (811). Electric cylinders (813) are installed on one side of the outer wall of the two metal support plates (812). The shaft ends of the two electric cylinders (813) are respectively connected to one side of the outer wall of the two connecting plates (815). The two electric cylinders (813) are used to drive the slides (814) and the cutter head (817) fixed thereon to move along the axial direction of the sleeve shafts (811). The spindle hammer assembly (900) includes a gear reducer (904) and hammers (909). The gear reducer (904) is used to provide high torque output, and a set of hammers (909) is used to strike materials.

2. The waste shredding device for construction according to claim 1, characterized in that: A set of frames (200) is fixedly connected to the top of the base (100). A crushing chamber (300) is bolted to the top of the set of frames (200). A feed inlet (400) is connected to the top of the crushing chamber (300). Two sets of brackets (500) are connected to the top of the set of bases (100). The tops of the two sets of brackets (500) are connected to the bottoms of the two first support plates (600). The outer walls of the two sets of brackets (500) are connected to the outer walls of the two second support plates (700). The tops of the two first support plates (600) and the two second support plates (700) are respectively connected to the bottom of a corresponding hydraulic motor (801).

3. The waste shredding device for construction according to claim 1, characterized in that: Both of the two hydraulic motors (801) have an oil drain port (802) and an oil inlet port (803) on both sides of their outer walls. The oil inlet ends of the two oil inlets (803) are connected to directional valves (804). The two directional valves (804) are used to control the flow direction of the hydraulic oil. One end of the outer wall of the two directional valves (804) is connected to an overflow valve (805). The two overflow valves (805) are used to limit the maximum pressure of the system. One end of the outer wall of the two overflow valves (805) is connected to a high-pressure filter (806). The two high-pressure filters (806) are used to filter impurities in the hydraulic oil. A first speed sensor (807) is installed on one side of the outer wall of the two hydraulic motors (801). The two first speed sensors (807) are used to provide real-time feedback of the speed.

4. The waste shredding device for construction according to claim 3, characterized in that: The output ends of the two hydraulic motors (801) are connected to drive shafts (808), and the outer surfaces of the two drive shafts (808) are fitted with hydraulic couplers (809). The two hydraulic couplers (809) are used for buffering shock protection system. The outer surfaces of the two drive shafts (808) are fitted with pressure sensors (820). The two pressure sensors (820) are used for real-time detection of pressure changes.

5. The waste shredding device for construction according to claim 4, characterized in that: The outer surfaces of the two drive shafts (808) are fitted with first bearing seats (810), and the two first bearing seats (810) are respectively installed on both sides of the outer wall of the crushing chamber (300). The output ends of the two drive shafts (808) are rotatably connected to a corresponding sleeve shaft (811).

6. The waste shredding device for construction according to claim 1, characterized in that: Each of the two slides (814) is fitted with a set of fixed seats (816) on its outer surface. Each of the two sets of fixed seats (816) is fitted with a cutter disc (817) on its outer surface. Each of the two sleeve shafts (811) is connected to a roller bearing (818) on one side of its outer wall. Each of the two roller bearings (818) is fitted with a fixed sleeve (819) on its outer surface.

7. The waste shredding device for construction according to claim 2, characterized in that: The spindle hammer assembly (900) also includes a support platform (901), on the top of which a servo motor (902) is fixedly installed. The bottom of the support platform (901) is connected to the top of the base (100). The output end of the servo motor (902) is rotatably connected to an input shaft (903), and the output end of the input shaft (903) is rotatably connected to one end of the outer wall of the gear reducer (904).

8. The waste shredding device for construction according to claim 7, characterized in that: The output end of the gear reducer (904) is connected to the main shaft (905), and two second bearing seats (906) are sleeved on the outer surface of the main shaft (905). The two second bearing seats (906) are respectively installed on both sides of the outer wall of the crushing chamber (300).

9. The waste shredding device for construction according to claim 8, characterized in that: The output end of the main shaft (905) is rotatably connected to a connecting shaft. A metal support seat (907) is sleeved on the outer surface of the connecting shaft. A set of metal fixing discs (908) is bolted to the outer surface of the metal support seat (907). A set of hammers (909) are movably connected between the outer walls of the set of metal fixing discs (908). A second speed sensor (910) is sleeved on the outer surface of the main shaft (905), and the second speed sensor (910) is used to monitor the speed of the main shaft (905) in real time.

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