Garbage recycling device for highway bridge construction

Abstract

The utility model relates to the field of highway bridge construction equipment, and discloses a garbage recycling device for highway bridge construction. The conveying belt mechanism, the vibrating screen mechanism and the smashing mechanism are installed on the supporting frame, the conveying belt mechanism is used for conveying construction waste, the input end of the vibrating screen mechanism is installed at the tail end of the conveying belt mechanism, and the vibrating screen mechanism is used for screening out granular construction waste and conveying blocky construction waste to the smashing mechanism to be smashed; the magnetic attraction mechanism is connected with the supporting frame in a sliding mode, selectively slides to the position above the conveying belt mechanism and is used for attracting magnetic construction waste; and the control unit is electrically connected with the conveying belt mechanism, the vibrating screen mechanism, the crushing mechanism and the magnetic suction mechanism. By arranging the magnetic attraction mechanism, granular construction waste contained in the construction waste can be separated out through the vibrating screen mechanism, the construction waste is crushed through the crushing mechanism, and transportation and follow-up treatment are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of highway bridge construction equipment, and in particular to a waste recycling and processing device for highway bridge construction. Background Technology

[0002] During the construction of highway bridges, a considerable amount of construction waste is generated at each stage of the construction process. Given that this type of construction waste is generally large in volume and inconvenient to transport directly, it is necessary to crush it in advance.

[0003] Currently, common construction waste recycling equipment mainly uses crushing and pulverizing methods to process waste into slag. However, in practical applications, this type of equipment has several drawbacks. First, construction waste generally contains a large amount of metal components, such as steel bars, iron nails, and iron sheets. These metal products have high utilization value, but existing recycling equipment often neglects secondary recycling, resulting in resource waste. Second, because the metals are not effectively separated, the mixture of waste residue increases, increasing the difficulty and cost of subsequent sorting and classification.

[0004] Therefore, it is extremely urgent to develop a highly efficient, convenient recycling device capable of sorting and processing waste. The development of this device is of great significance for improving the efficiency of highway bridge construction and enhancing environmental protection. Utility Model Content

[0005] The present invention aims to provide a waste recycling and processing device for highway bridge construction to overcome the shortcomings of the above-mentioned situation.

[0006] To achieve the above objectives, the technical solution of this utility model is: a waste recycling and processing device for highway bridge construction, comprising:

[0007] Support frame;

[0008] The conveyor belt mechanism, vibrating screen mechanism, and crushing mechanism are installed on the support frame. The conveyor belt mechanism is used to transport construction waste. The input end of the vibrating screen mechanism is installed at the end of the conveyor belt mechanism to screen out granular construction waste and transport blocky construction waste to the crushing mechanism for crushing.

[0009] A magnetic attraction mechanism slidably connected to the support frame, selectively sliding above the conveyor belt mechanism, and used to attract magnetic construction waste; and

[0010] A control unit electrically connected to the conveyor belt mechanism, vibrating screen mechanism, crushing mechanism and magnetic attraction mechanism respectively.

[0011] Furthermore, the conveyor belt mechanism includes:

[0012] Two parallel support plates are fixedly connected to the support frame;

[0013] The driving roller and the driven roller are rotatably connected between the two support plates;

[0014] The conveyor belt fitted around the periphery of the driving and driven rollers; and

[0015] A first drive motor is fixedly connected to the support plate and is driven by the active roller. The first drive motor is electrically connected to the control unit.

[0016] Furthermore, the conveyor belt mechanism also includes a plurality of anti-slip protrusions disposed on the surface of the conveyor belt.

[0017] Furthermore, the magnetic attraction mechanism includes:

[0018] Multiple guide rods located above the conveyor belt and fixedly connected to the support frame;

[0019] A sliding frame slidably connected to the plurality of guide rods; and

[0020] An electromagnet is installed below the sliding frame, and the electromagnet is electrically connected to the control unit.

[0021] Furthermore, the magnetic attraction mechanism also includes:

[0022] A first storage box is detachably connected to the support frame, and the upper end of the first storage box is provided with an opening. The electromagnet is selectively slidably connected above the conveyor belt or the first storage box.

[0023] Furthermore, the vibrating screen mechanism includes:

[0024] A screen located below the output end of the conveyor belt, in an inclined state, and hinged to the support frame, has screen holes, and the output end of the screen is connected to the input end of the crushing mechanism.

[0025] A movable rod slidably connected to the lower surface of the screen; and

[0026] A reciprocating power assembly for driving the movable rod to reciprocate in the vertical direction, the reciprocating power assembly being electrically connected to the control unit.

[0027] Furthermore, the reciprocating power assembly is provided in two sets, respectively located at both ends of the movable rod, and the reciprocating power assembly includes:

[0028] A protective shell fixedly connected to the support frame;

[0029] A connecting rod that slides vertically through the top plate of the protective shell, with the upper end of the connecting rod being fixedly connected to the movable rod perpendicularly.

[0030] A support base located inside the protective shell and fixedly connected to the lower end of the connecting rod, wherein a roller is rotatably connected inside the support base;

[0031] A cam rotatably connected within the protective housing, the cam being located below the roller, the two being slidably connected; and

[0032] A second drive motor is connected to the cam drive, and the second drive motor is electrically connected to the control unit.

[0033] Furthermore, the reciprocating power assembly also includes:

[0034] A compression spring is located inside the protective shell and sleeved around the connecting rod. One end of the compression spring is connected to the support base, and the other end of the compression spring is connected to the top plate of the protective shell.

[0035] The rotation shafts of the two cams are coaxially and fixedly connected, and a protective sleeve is fixedly connected between the two protective shells, the protective sleeve being sleeved around the circumference of the rotation shaft of the cam; and

[0036] One of the protective shells has a mounting plate fixedly connected to its outer side wall. The second drive motor is mounted on the mounting plate, and the output shaft of the second drive motor is connected to the rotation shaft of the cam via a coupling.

[0037] Furthermore, the crushing mechanism includes:

[0038] A crushing box that is fixedly installed on the support frame;

[0039] A stationary jaw plate is fixedly installed on one side of the crushing chamber. An eccentric shaft is movably installed on the crushing chamber near the stationary jaw plate, and a movable jaw plate is installed on the eccentric shaft. The movable jaw plate and the stationary jaw plate form a "V" shape.

[0040] A third drive motor is mounted on the support frame. The third drive motor is electrically connected to the control unit and is also connected to the eccentric shaft drive.

[0041] Furthermore, it also includes:

[0042] A second storage box installed below the screen, the second storage box having openings on its top and side walls respectively; and

[0043] A third storage box is installed below the moving jaw plate and the stationary jaw plate, and the top and side walls of the third storage box are respectively provided with openings.

[0044] Compared with the prior art, this utility model has at least the following advantages:

[0045] This invention, by incorporating a magnetic attraction mechanism, can separate magnetic materials such as steel bar ends and nails from construction waste using a vibrating screen mechanism. Larger pieces of construction waste are then crushed by a crushing mechanism, reducing their volume for easier transportation and subsequent processing. This invention achieves a comprehensive sorting, screening, and crushing process for highway and bridge construction waste, improving waste management efficiency and reducing labor costs. Attached Figure Description

[0046] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0047] Figure 1 This is a schematic diagram of the overall structure of the waste recycling and processing device for highway bridge construction according to this utility model.

[0048] Figure 2 This is a schematic diagram of the overall structure of the waste recycling and processing device for highway bridge construction, presented from another perspective.

[0049] Figure 3 This is a cross-sectional view of part of the vibrating screen mechanism of this utility model.

[0050] Reference numerals: 1. Support frame; 2. Conveyor belt mechanism; 3. Vibrating screen mechanism; 4. Crushing mechanism; 5. Magnetic attraction mechanism; 6. Second storage box; 7. Third storage box; 21. Support plate; 22. Driving roller; 23. Driven roller; 24. Conveyor belt; 25. First drive motor; 26. Anti-slip protrusion; 31. Screen; 32. Movable rod; 33. Protective shell; 34. Connecting rod; 35. Support seat; 36. Roller; 37. Cam; 38. Second drive motor; 39. Compression spring; 310. Protective sleeve; 311. Mounting plate; 41. Crushing box; 42. Stationary jaw plate; 43. Movable jaw plate; 44. Third drive motor; 45. First pulley; 46. Second pulley; 47. Belt; 51. Guide rod; 52. Sliding frame; 53. Electromagnet; 54. First storage box. Detailed Implementation

[0051] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0052] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0053] Reference Figure 1-2 This utility model provides a waste recycling and processing device for highway bridge construction, including a support frame 1, a conveyor belt mechanism 2, a vibrating screen mechanism 3, a crushing mechanism 4, a magnetic suction mechanism 5, and a control unit (not shown in the figure).

[0054] Support frame 1 serves as the basic support structure for the entire device. It is made of steel and has sufficient strength and stability to support the weight of other components on the device and construction waste.

[0055] The conveyor belt mechanism 2 is used to transport construction waste and specifically includes two parallel support plates 21, which are fixedly connected to the support frame 1. A drive roller 22 and a driven roller 23 are rotatably connected between the two support plates 21. The drive roller 22 and the driven roller 23 are connected to the support plates 21 via bearings and can rotate freely. A conveyor belt 24 is fitted around the drive roller 22 and the driven roller 23, forming a closed-loop conveyor belt 24 for carrying and transporting construction waste. A first drive motor 25 is fixedly connected to the support plate 21 and is drively connected to the drive roller 22. The operation of the first drive motor 25 drives the drive roller 22 to rotate, thereby driving the conveyor belt 24. The first drive motor 25 is preferably a geared motor. The first drive motor 25 is electrically connected to a control unit, which can control the start, stop, and speed of the first drive motor 25 as needed to adjust the conveying speed of the conveyor belt 24. In addition, the surface of the conveyor belt 24 is provided with several anti-slip protrusions 26. These anti-slip protrusions 26 can increase the friction between the conveyor belt 24 and the construction waste, prevent the construction waste from sliding on the conveyor belt 24, and improve the stability of the conveying.

[0056] The magnetic attraction mechanism 5 is used to attract magnetic construction waste, such as rebar ends and nails. The magnetic attraction mechanism 5 includes multiple guide rods 51, a sliding frame 52, and an electromagnet 53. The guide rods 51 are horizontally positioned, fixedly connected to the support frame 1, and located above the conveyor belt 24. The sliding frame 52 is slidably connected to the guide rods 51 and can slide along them. The electromagnet 53 is installed below the sliding frame 52 and electrically connected to the control unit. The control unit can control the magnetic on / off state of the electromagnet 53. When it is necessary to collect magnetic construction waste, the sliding frame 52 can be slid above the conveyor belt 24, and the control unit energizes the electromagnet 53 to generate magnetism, attracting the magnetic construction waste on the conveyor belt 24. The magnetic attraction mechanism 5 also includes a first collection box 54 detachably connected to the support frame 1, with an opening at its upper end. After the electromagnet 53 has attracted all the magnetic construction waste, the sliding frame 52 is controlled to slide along the guide rod 51 to move the electromagnet 53 above the first collection box 54. Then, the electromagnet 53 loses its electromagnetic properties and the magnetic construction waste falls into the first collection box 54 for collection under the action of gravity.

[0057] The vibrating screen mechanism 3 is used to screen out granular construction waste and convey lumpy construction waste to the crushing mechanism 4. Its specific structure includes a screen 31, a movable rod 32, and a reciprocating power assembly. The screen 31 is inclined, extending downwards towards the crushing mechanism 4. The upper end of the screen 31 is located below the output end of the conveyor belt 24, and its lower surface is connected to the support frame 1 via a hinge shaft. The screen 31 has screen holes, the size of which is designed according to the size of the particles to be screened. The output end of the screen 31 is connected to the input end of the crushing mechanism 4, used to convey lumpy construction waste to the crushing mechanism 4. The movable rod 32 is slidably connected to the lower surface of the screen 31, and its two ends are respectively connected to the reciprocating power assembly. The reciprocating power assembly is used to drive the movable rod 32 to reciprocate vertically, thereby causing the screen 31 to vibrate and screen the construction waste, specifically removing soil particles and powdery construction waste.

[0058] Combined with reference Figure 3Two sets of reciprocating power components are provided, located at both ends of the movable rod 32. Each set of reciprocating power components includes a protective shell 33, a connecting rod 34, a support base 35, a roller 36, a cam 37, and a second drive motor 38. The protective shell 33 is fixedly connected to the support frame 1. The connecting rod 34 slides vertically through the top plate of the protective shell 33, and its upper end is vertically fixedly connected to the movable rod 32. The support base 35 is located inside the protective shell 33 and is fixedly connected to the lower end of the connecting rod 34. The roller 36 is rotatably connected inside the support base 35. The cam 37 is rotatably connected inside the protective shell 33 and located below the roller 36. The two are slidably connected. When the cam 37 rotates, its protruding part pushes the roller 36 upward, and then the roller 36 moves downward, thereby driving the support base 35 and the connecting rod 34 to move up and down, which in turn causes the movable rod 32 to drive the screen 31 to vibrate. The second drive motor 38 is fixedly mounted on the outer wall of the protective shell 33 and is connected to the rotating shaft of the cam 37 via a coupling (not shown in the figure) to provide power for the rotation of the cam 37. The second drive motor 38 is electrically connected to the control unit, which controls the operation of the second drive motor 38 to adjust the vibration frequency of the screen 31. In addition, the reciprocating power assembly also includes a compression spring 39 sleeved around the connecting rod 34. One end of the compression spring 39 is connected to the support base 35, and the other end is connected to the top plate of the protective shell 33. When the smooth part of the cam 37 slides against the roller 36, the roller 36 moves downward under the action of the compression spring 39. Furthermore, the rotating shafts of the two cams 37 are coaxially fixedly connected, and a protective sleeve 310 is fixedly connected between the two protective shells 33. The protective sleeve 310 is sleeved around the rotating shaft of the cam 37 to provide protection and stability.

[0059] Refer again Figure 1-2The crushing mechanism 4 is used to crush blocky construction waste. It adopts a jaw crusher, a technology already in use, and its specific structure includes a crushing box 41, a stationary jaw plate 42, a movable jaw plate 43, an eccentric shaft, and a third drive motor 44. The crushing box 41 is fixedly installed on the support frame 1, forming a crushing chamber inside. The stationary jaw plate 42 is fixedly installed on one side of the crushing box 41. An eccentric shaft is movably installed on the crushing box 41 near the stationary jaw plate 42, and the movable jaw plate 43 is installed on the eccentric shaft. The movable jaw plate 43 and the stationary jaw plate 42 have a "V" shape structure. When the movable jaw plate 43 swings, a periodic gap change is formed between it and the stationary jaw plate 42, thereby squeezing and crushing the blocky construction waste entering the crushing chamber. An eccentric shaft is coaxially fixedly connected to a first pulley 45. A third drive motor 44 is mounted on a support frame 1. The output shaft of the third drive motor 44 is keyed to a second pulley 46. The second pulley 46 is connected to the first pulley 45 via a belt 47. Thus, starting the third drive motor 44 can drive the eccentric shaft to rotate, further providing power for the swinging of the movable jaw plate 43. The third drive motor 44 is electrically connected to a control unit, which controls the operation of the third drive motor 44 and adjusts the crushing force and efficiency.

[0060] To facilitate the sorting and collection of different types of waste, the device also includes multiple collection bins. The second collection bin 6 is installed below the screen 31 and is used to collect granular construction waste screened out by the screen 31. It has openings on its top and side walls; the top opening allows the granular waste screened out by the screen 31 to drain into it, while the side wall openings facilitate timely cleaning of the construction waste inside the second collection bin 6. The third collection bin 7 is installed below the moving jaw plate 43 and the stationary jaw plate 42 and is used to collect construction waste crushed by the crushing mechanism 4. It also has openings on its top and side walls; the top opening allows the crushed construction waste to enter the third collection bin 7 for collection, while the side wall openings facilitate timely cleaning of the construction waste inside the third collection bin 7.

[0061] The control unit is the core of the entire device, electrically connected to the conveyor belt mechanism 2, vibrating screen mechanism 3, crushing mechanism 4, and magnetic attraction mechanism 5. Through the control unit, centralized control and coordinated operation of each mechanism can be achieved. The control unit can be a microcontroller or programmable logic controller (PLC), equipped with an operating interface for operators to set parameters and input operating commands. For example, operators can start or stop the operation of each mechanism through the operating interface, and set parameters such as the conveying speed of the conveyor belt 24, the vibration frequency of the screen 31, the crushing force of the crushing mechanism 4, and the magnetic on / off state and adsorption time of the magnetic attraction mechanism 5. Based on the operator's commands and preset control logic, the control unit sends corresponding control signals to each mechanism, achieving automated control and improving the efficiency and quality of waste recycling.

[0062] This invention achieves waste sorting and processing by incorporating a magnetic attraction mechanism 5. It effectively attracts magnetic construction waste, such as rebar ends and nails, avoiding waste of metal resources and improving resource recycling rates. Because the magnetic attraction mechanism 5 separates metal materials in the early stages of construction waste processing, it reduces the metal content in subsequent waste residue, thereby lowering the difficulty and cost of subsequent sorting and selection.

[0063] The device can classify and process construction waste. It uses a vibrating screen mechanism 3 to remove granular waste, a crushing mechanism 4 to process blocky waste, and a magnetic attraction mechanism 5 to recover metal materials. The waste is then collected into different collection boxes, thus achieving effective classification and recycling of resources.

[0064] The various mechanisms in this invention work together in a coordinated manner. The conveyor belt mechanism 2 stably transports construction waste, the vibrating screen mechanism 3 efficiently screens it, the crushing mechanism 4 powerfully crushes it, and the magnetic suction mechanism 5 precisely collects it. The entire processing flow is smooth and efficient, greatly improving the processing speed of waste in highway and bridge construction. The volume of waste reduced after crushing facilitates subsequent transportation and further processing, lowering transportation costs and processing difficulties.

[0065] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0066] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A waste recycling and processing device for highway bridge construction, characterized in that, The utility model relates to a construction waste recycling device, which comprises the following parts: a support frame (1); a conveying belt mechanism (2) for conveying construction waste, a vibrating screen mechanism (3) and a crushing mechanism (4) are mounted on the support frame (1), the input end of the vibrating screen mechanism (3) is mounted at the end of the conveying belt mechanism (2), the vibrating screen mechanism (3) is used for screening out granular construction waste, and the blocky construction waste is conveyed to the crushing mechanism (4) for crushing; a magnetic attraction mechanism (5) which is in sliding connection with the support frame (1) and selectively slides above the conveying belt mechanism (2) and is used for attracting magnetic construction waste; and a control unit which is in electrical connection with the conveying belt mechanism (2), the vibrating screen mechanism (3), the crushing mechanism (4) and the magnetic attraction mechanism (5) respectively.

2. The garbage recycling device for highway bridge construction according to claim 1, characterized in that, The conveying belt mechanism (2) comprises the following parts: two parallel support plates (21) which are fixedly connected to the support frame (1); a driving roller (22) and a driven roller (23) which are rotatably connected between the two support plates (21); a conveying belt (24) which is sleeved around the driving roller (22) and the driven roller (23); and a first driving motor (25) which is fixedly connected to the support plate (21) and in driving connection with the driving roller (22), the first driving motor (25) is in electrical connection with the control unit.

3. The garbage recycling device for highway bridge construction according to claim 2, characterized in that, The conveying belt mechanism (2) further comprises a plurality of anti-skid protrusions (26) which are arranged on the surface of the conveying belt (24).

4. The garbage recycling device for highway bridge construction according to claim 2, characterized in that, The magnetic attraction mechanism (5) comprises the following parts: a plurality of guide rods (51) which are arranged above the conveying belt (24) and fixedly connected to the support frame (1); a sliding frame (52) which is in sliding connection with the plurality of guide rods (51); and an electromagnet (53) which is mounted below the sliding frame (52), the electromagnet (53) is in electrical connection with the control unit.

5. The garbage recycling device for highway bridge construction according to claim 4, characterized in that, The magnetic attraction mechanism (5) further comprises the following parts: a first storage box (54) which is detachably connected to the support frame (1), the upper end of the first storage box (54) is provided with an opening, the electromagnet (53) is selectively in sliding connection above the conveying belt (24) or the first storage box (54).

6. The garbage recycling device for highway bridge construction according to claim 4, characterized in that, The vibrating screen mechanism (3) comprises the following parts: a screen (31) which is arranged below the output end of the conveying belt (24) in an inclined state and is hingedly connected to the support frame (1), the screen (31) is provided with screen holes, the output end of the screen (31) is connected to the input end of the crushing mechanism (4); a movable rod (32) which is in sliding connection with the lower surface of the screen (31); and a reciprocating power assembly which is used for driving the movable rod (32) to reciprocate along the vertical direction, the reciprocating power assembly is in electrical connection with the control unit.

7. The garbage recycling device for highway bridge construction according to claim 6, characterized in that, The reciprocating power assembly is provided with two groups which are respectively arranged at the two ends of the movable rod (32), the reciprocating power assembly comprises the following parts: a protective shell (33) which is fixedly connected to the support frame (1); a connecting rod (34) which is in sliding connection with the top plate of the protective shell (33) along the vertical direction, the upper end of the connecting rod (34) is in perpendicular fixed connection with the movable rod (32); and a second driving motor (35) which is fixedly connected to the connecting rod (34) and in driving connection with the movable rod (32), the second driving motor (35) is in electrical connection with the control unit. A support seat (35) is located in the protective shell (33) and fixedly connected with the lower end of the connecting rod (34), and a roller (36) is rotatably connected in the support seat (35); A cam (37) is rotatably connected in the protective shell (33), and the cam (37) is located below the roller (36) and is in sliding connection with the roller (36); and A second driving motor (38) is in transmission connection with the cam (37), and the second driving motor (38) is in electrical connection with the control unit.

8. The garbage recycling device for highway bridge construction according to claim 7, characterized in that, The reciprocating power assembly further comprises: A compression spring (39) is located in the protective shell (33) and sleeved on the side of the connecting rod (34), one end of the compression spring (39) is connected with the support seat (35), and the other end of the compression spring (39) is connected with the top plate of the protective shell (33); The rotation axes of the two cams (37) are coaxially fixedly connected, and protective sleeves (310) are fixedly connected between the two protective shells (33) and sleeved on the side of the rotation axes of the cams (37); and One of the protective shells (33) is fixedly connected with a mounting plate (311) on the outer side wall, the second driving motor (38) is mounted on the mounting plate (311), and the output shaft of the second driving motor (38) is in transmission connection with the rotation axis of the cam (37) through a shaft coupling.

9. The garbage recycling device for highway bridge construction according to claim 7, characterized in that, The crushing mechanism (4) comprises: A crushing box (41) is fixedly installed on the support frame (1); A stationary jaw plate (42) is fixedly installed on one side of the crushing box (41), an eccentric shaft is movably installed on the side of the crushing box (41) close to the stationary jaw plate (42), a movable jaw plate (43) is installed on the eccentric shaft, and the movable jaw plate (43) and the stationary jaw plate (42) are in "V" shape structure; and A third driving motor (44) is installed on the support frame (1), the third driving motor (44) is in electrical connection with the control unit and in transmission connection with the eccentric shaft.

10. The garbage recycling device for highway bridge construction according to claim 9, characterized in that, Further comprising: A second storage box (6) is installed below the screen (31), and the top and side walls of the second storage box (6) are respectively provided with openings; And A third storage box (7) is installed below the movable jaw plate (43) and the stationary jaw plate (42), and the top and side walls of the third storage box (7) are respectively provided with openings.

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