Asphalt old material block crushing device

Abstract

The utility model relates to crushing device technical field, it is an asphalt old material block crushing device, including frame, feed hopper, crushing box, power output device, jaw type crushing mechanism and asphalt old material block crushing roller, the utility model discloses compact with reasonable structure, for the asphalt old material block that has passed the loader preliminary selection, through the cooperation of asphalt old material block crushing roller and the multiple crushing tooth plate on jaw type crushing mechanism, through linear actuator drive export baffle rotation, can adjust the discharge opening size of feed hopper, control the discharging speed of asphalt waste old material block, so that the asphalt old material block in extrusion clearance is fully crushed, and the crushing material that meets the requirement is obtained through primary crushing, and the utility model discloses simple structure, smaller floor space, low overall cost, flexible use, need not separate sieve, low production cost, cooperate with small asphalt mixture mixer, very suitable for the temporary use of highway minor repair maintenance station.

Description

Technical Field

[0001] This utility model relates to the field of crushing device technology, and is a crushing device for old asphalt blocks. Background Technology

[0002] Reclaimed asphalt pavement (RAP) mainly refers to the waste surface material of asphalt pavement obtained through excavation, milling and other methods. Although RAP is a waste surface material of the pavement, it still has the function of reuse, such as being used as crushed aggregate for roadbed paving. However, in order to turn RAP into crushed aggregate, it is inevitable to use crushing equipment to crush and process the RAP.

[0003] Currently, the asphalt waste crushing equipment used in large-scale recycled asphalt mixing plants typically involves feeding lumps of old asphalt directly into a hopper using a loader or conveyor. The lumps are then crushed within a crushing chamber by two crushing rollers (fixed and movable) before being conveyed out from the bottom. However, for highway maintenance stations, a double-roll crusher or system consisting of two crushing rollers is expensive, with high procurement and production costs, and requires a large footprint, making it unsuitable for temporary use.

[0004] Chinese patent document CN218932773U discloses a production device for recycling asphalt scrap, which includes a shell with a feed inlet at the top. Inside the shell, from top to bottom, are a first crushing component, a second crushing component, and a third crushing component. The first crushing component includes a single-toothed roller and an extrusion plate structure, with an extrusion gap formed between the extrusion plate and the single-toothed roller. Material enters the extrusion gap through the feed inlet and undergoes coarse crushing to produce coarse aggregate, pseudo-coarse aggregate, and fine aggregate. A conical buffer hopper is located below the single-toothed roller, and the conical buffer hopper has a discharge channel. The third crushing component... The second crushing component includes a rotating shaft disposed within the outer casing. The rotating shaft has a rotating component whose center corresponds to the feeding channel. A wear-resistant plate is provided on the inner wall of the outer casing corresponding to the rotating component. A guide plate is provided at the bottom of the wear-resistant plate. Material falling from the feeding channel passes through the rotating component and centrifugally collides with the wear-resistant plate, achieving the crushing of pseudo-coarse particles and the stripping of the asphalt film on the surface of the coarse aggregate. The third crushing component includes a double-toothed roller structure disposed below the guide plate. The double-toothed roller structure has a crushing gap, and a discharge port is provided below the crushing gap. Material enters the crushing gap through the guide plate for fine crushing. Although it also uses a single-toothed roller for crushing, this single-toothed roller still needs to cooperate with the double-toothed roller structure to crush and knead the asphalt lumps into qualified crushed material. Summary of the Invention

[0005] This utility model provides an asphalt waste material crushing device that overcomes the shortcomings of the prior art. It can effectively solve the problems of existing asphalt waste material crushing devices, which still require a double-toothed roller structure in addition to a single-toothed roller to crush asphalt waste material into qualified crushed material; the price of crushing devices or systems composed of two crushing rollers is expensive, the procurement and production costs are too high, and the device occupies a large area, making it unsuitable for temporary use by highway maintenance stations.

[0006] One of the technical solutions of this utility model is achieved through the following measures: an asphalt waste block crushing roller, including a crushing roller body, with multiple crushing sections spirally distributed around the rotation axis on the outside of the crushing roller body, each crushing section including several crushing cones spaced apart along the axial direction, each crushing cone being detachably installed at a corresponding position on the crushing roller body; a transmission part coaxially provided at the left end of the crushing roller body, which can be connected to a power output device, and a support part coaxially provided at the right end of the crushing roller body.

[0007] The following are further optimizations and / or improvements to the above-mentioned utility model technical solution: The aforementioned crushing roller body may include short sleeves, annular extrusion plates, and a hollow roller. The inner side of the left end of the roller is fixedly installed together with the outer side of the right end of the transmission part, and the inner side of the right end of the roller is fixedly installed together with the outer side of the left end of the support part. Several short sleeves are axially spaced on the outer side of the roller, and a vibration damping gap is left between the inner side of each short sleeve and the outer side of the roller. Annular extrusion plates are fixedly installed between two adjacent short sleeves. The inner end of each annular extrusion plate is fixedly installed together with the corresponding position on the outer side of the roller. The outer ends of all annular extrusion plates protrude from the outer circumferential surface of the short sleeves to form extrusion cutting edges. Each short sleeve is provided with at least one row of internally and externally penetrating crushing cone mounting holes. Each crushing cone mounting hole group includes several crushing cone mounting through holes distributed circumferentially. Any row of crushing cone mounting through holes distributed axially is spirally distributed around the rotation axis, and a crushing cone is provided in each crushing cone mounting through hole.

[0008] The aforementioned crushing cone may include a base and a crushing cone body. One end of the base is fixedly installed on the crushing roller body, and the other end of the base is provided with a support platform. The support platform has an outward-facing threaded hole in the middle, and a tower-shaped crushing cone body is installed in the threaded hole.

[0009] The aforementioned crushing cone body may include a cone shank section, a base section, a body section, a top section, and a tip section, with the external dimensions of the base section, body section, top section, and tip section decreasing sequentially. The outer side of the cone shank section is threaded together with the inner side of the threaded hole. A columnar base section is fixedly installed at one end of the cone shank section protruding from the support platform. A frustum-shaped body section is provided in the middle of the top surface of the base section, with the outer diameter of the bottom end of the body section being larger than the outer diameter of the top end. The middle of the top surface of the body section is fixedly installed together with the bottom surface of the top section. The top section is frustum-shaped and its external dimensions are smaller than those of the body section. A pointed cone-shaped tip section is fixedly installed on the top surface of the top section.

[0010] The aforementioned spire section can be an obtuse-angled cone.

[0011] The aforementioned crushing cone body can be an alloy crushing cone body.

[0012] The aforementioned transmission part can be a four-section stepped shaft with an outer diameter that increases sequentially from left to right. From left to right, it consists of a transmission section, a first rotating support section, a first shoulder section, and a first connecting section. The first connecting section is coaxially mounted with the left end of the crushing roller body.

[0013] The aforementioned support portion can be a three-section stepped shaft with an inner diameter decreasing sequentially from left to right. From left to right, it includes a second connecting section, a second shoulder section, and a second rotating support section. The second connecting section is coaxially mounted with the right end of the crushing roller body.

[0014] The second technical solution of this utility model is achieved through the following measures: A crushing device for asphalt slag blocks includes a frame, a feed hopper, a crushing box, a power output device, a jaw crushing mechanism, and an asphalt slag block crushing roller. The feed hopper and the crushing box are arranged sequentially from top to bottom on the frame. The feed hopper has an upward opening and is funnel-shaped. The discharge port at the lower end of the feed hopper is connected to the feed port at the upper end of the crushing box. A transmission hole with internal and external penetration is provided on the rear left side of the crushing box. An asphalt slag block crushing roller is rotatably installed in the transmission hole. The right end of the asphalt slag block crushing roller is rotatably installed with the corresponding position inside the right side of the crushing box. The left end of the asphalt slag block crushing roller is connected to the output end of the power output device. A jaw crushing mechanism is provided in the crushing box corresponding to the position in front of the asphalt slag block crushing roller. A compression gap is formed between the rear part of the jaw crushing mechanism and the front part of the asphalt slag block crushing roller, which can crush the asphalt slag blocks.

[0015] The following are further optimizations and / or improvements to the above-mentioned utility model technical solution: A discharge control mechanism may be provided at the discharge port at the lower end of the aforementioned feed hopper. The discharge control mechanism may include a left connecting plate, a right connecting plate, an outlet baffle, and a linear actuator. The left and right connecting plates are rotatably installed at corresponding positions on the lower left and lower right sides of the feed port. The lower ends of the left and right connecting plates are both arc-shaped. An arc-shaped outlet baffle is fixedly installed between the lower ends of the left and right connecting plates. A drive plate is fixedly installed in the middle of the right side of the right connecting plate. A linear actuator that can extend and retract back and forth is hinged to the drive plate. The front end of the linear actuator is hinged to the corresponding position on the right front of the frame.

[0016] The aforementioned jaw crusher may include an extrusion plate, crushing tooth plates, support arms, and a spring-loaded clearance mechanism. An extrusion plate is provided in the crushing box located in front of the crushing roller of the asphalt block. At least one crushing tooth plate is installed on the rear side of the extrusion plate, and the rear end of the crushing tooth plate is located in front of the crushing roller of the asphalt block. Support arms are detachably installed on the left and rear ends of the extrusion plate, respectively. A clearance opening is provided on the front side of the crushing box corresponding to the position of each support arm, allowing the support arm to move back and forth. The front parts of the two support arms pass through the corresponding clearance openings and are rotatably mounted together with the front part of the frame via a bracket. A spring-loaded clearance mechanism is provided between the rear of each support arm and the front of the crushing box.

[0017] The aforementioned spring avoidance mechanism may include a connecting rod, a front adjusting ring, a rear adjusting ring, and a compression spring. A through-hole is provided on the front side of the crushing box corresponding to the rear end position of the support arm. A connecting rod is installed in the avoidance hole, and the rear end of the connecting rod is rotatably mounted together with the rear part of the support arm. The rear adjusting ring is threadedly connected to the outer side of the rear part of the connecting rod. A compression spring is fitted on the outer side of the connecting rod corresponding to the position between the rear adjusting ring and the front side plate of the crushing box. The front outer side of the connecting rod may be threaded. The front outer side of the connecting rod is threadedly connected to the front adjusting ring. The rear end of the front adjusting ring abuts against the corresponding position on the front side of the crushing box. Both the outer side of the rear adjusting ring and the outer side of the front adjusting ring are provided with a wrench part that can easily engage a wrench.

[0018] The lower front side of the aforementioned crushing box can be fixedly installed with a discharge guide plate that is inclined in a front-high and rear-low shape. The discharge guide plate is trapezoidal and the top dimension is smaller than the bottom dimension. The left and right sides of the bottom end of the discharge guide plate can be fixedly installed together with the corresponding positions at the bottom of the frame. Baffle plates can be provided on the left and rear sides of the discharge guide plate.

[0019] The four corners of the lower end of the frame can be equipped with foot fixing plates, and each foot fixing plate can be equipped with several through-holes.

[0020] This utility model has a reasonable and compact structure and is easy to use. For asphalt slag blocks that have been initially selected by a loader, the asphalt slag block crushing roller, in conjunction with multiple crushing tooth plates on the jaw crusher, can effectively crush the asphalt slag blocks with a single roller, obtaining a finished product with a mixture of coarse and fine particles. The linear actuator drives the outlet baffle to rotate, which can adjust the opening of the discharge port of the feed hopper and control the feeding speed of the asphalt slag blocks, so as to fully crush the asphalt slag blocks in the compression gap, and obtain crushed material that meets the requirements through one crushing. Its structure is simple, occupies a small area, has a low overall cost, and is flexible in use. It does not require screening, and the raw material feeding and finished material transfer can be completed by using a loader. The production cost is low. When used with a small asphalt mixing plant, it is very suitable for temporary use in highway maintenance stations. Attached Figure Description

[0021] Appendix Figure 1 This is a schematic diagram of the main cross-sectional structure of embodiments 1-8 of this utility model.

[0022] Appendix Figure 2 For the appendix Figure 1 A schematic diagram of the three-dimensional structure.

[0023] Appendix Figure 3 This is a schematic diagram of the main structure of embodiments 9-14 of this utility model.

[0024] Appendix Figure 4 For the appendix Figure 1 A schematic diagram of the left-side cross-sectional structure.

[0025] The codes in the attached diagram are as follows: 1 for the axis of rotation, 2 for the short sleeve, 3 for the annular extrusion plate, 4 for the roller, 5 for the vibration damping gap, 6 for the through hole for installing the crushing cone, 7 for the base, 8 for the support platform, 9 for the threaded hole, 10 for the cone shank section, 11 for the tower base section, 12 for the tower body section, 13 for the tower top section, 14 for the tower tip section, 15 for the transmission section, 16 for the first rotating support section, 17 for the first shoulder section, 18 for the first connecting section, 19 for the second connecting section, 20 for the second shoulder section, and 21 for the second rotating support. Section 22 is the frame, 23 is the feed hopper, 24 is the crushing box, 25 is the power output device, 26 is the discharge port, 27 is the extrusion gap, 28 is the left connecting plate, 29 is the right connecting plate, 30 is the outlet baffle, 31 is the drive plate, 32 is the linear actuator, 33 is the extrusion plate, 34 is the crushing tooth plate, 35 is the support arm, 36 is the connecting rod, 37 is the bracket, 38 is the discharge guide plate, 39 is the baffle plate, 40 is the foot fixing plate, 41 is the front adjusting ring, 42 is the rear adjusting ring, and 43 is the compression spring. Detailed Implementation

[0026] This utility model is not limited to the following embodiments, and the specific implementation method can be determined according to the technical solution of this utility model and the actual situation.

[0027] In this utility model, for ease of description, the description of the relative positions of the components is based on the appendix to the specification. Figure 1 The layout is described using a diagrammatic method, such as front, back, top, bottom, left, right, etc. The positional relationships are determined based on the layout direction of the attached diagram in the instruction manual.

[0028] The present invention will be further described below with reference to the embodiments and accompanying drawings: Example 1: As shown in the attached document Figures 1 to 4 As shown, the asphalt waste block crushing roller includes a crushing roller body. The outer side of the crushing roller body is provided with multiple crushing sections spirally distributed around the rotation axis 1. Each crushing section includes several crushing cones distributed at intervals along the axial direction. Each crushing cone can be detachably installed at the corresponding position on the crushing roller body. A transmission part that can be connected to the power output device 25 is coaxially provided at the left end of the crushing roller body, and a support part is coaxially provided at the right end of the crushing roller body.

[0029] In the above technical solution, the crushing cone is spirally distributed on the crushing roller body along the rotation axis 1. During the crushing process of asphalt old material blocks, it can effectively reduce the resistance when crushing asphalt old material blocks, reduce the damage to the crushing roller caused by mechanical vibration, reduce the driving power of the crushing device, reduce consumption, and save processing costs.

[0030] The transmission and support parts, which are coaxially arranged with the crushing roller body, can prevent eccentric wear between the transmission and support parts and the crushing device housing, thereby reducing maintenance costs and the number of maintenance operations.

[0031] Depending on the requirements, the crushing cone is a detachable crushing cone, meaning that it can be detachably installed on the crushing roller body through existing technologies such as threaded connections and threaded fasteners, achieving overall detachability relative to the crushing roller body. Alternatively, the crushing cone itself can be composed of multiple parts, with the fixed base part being fixedly installed to the crushing roller body in a non-detachable manner. The key components used to achieve the crushing effect are detachable relative to the fixed base, thereby making it easier and faster to replace damaged or severely worn crushing cones. The shape of the crushing cone can be rectangular, trapezoidal, frustum-shaped, tower-shaped, multi-faceted pyramidal, conical, or arc-shaped with cutting edges, etc., and it can be made of wear-resistant alloys available in existing technologies.

[0032] In this embodiment, at least six crushing sections are provided circumferentially around the outside of the crushing roller body, spirally distributed around the rotation axis 1, so that the extrusion gap 27 between the crushing roller and the jaw crushing mechanism is more uniform and the crushing effect is better. Asphalt old material blocks can be crushed into coarse and fine mixed crushed material that meets the requirements by only the crushing roller and the jaw crushing mechanism.

[0033] The aforementioned asphalt slag crushing rollers can be further optimized and / or improved according to actual needs: Example 2: As an optimization of the above examples, as shown in the appendix Figures 1 to 2 As shown, the crushing roller body includes a short sleeve 2, an annular extrusion plate 3, and a hollow roller 4. The inner side of the left end of the roller 4 is fixedly installed together with the outer side of the right end of the transmission part, and the inner side of the right end of the roller 4 is fixedly installed together with the outer side of the left end of the support part. Several short sleeves 2 are axially spaced on the outer side of the roller 4, and a vibration damping gap 5 is left between the inner side of each short sleeve 2 and the outer side of the roller 4. An annular extrusion plate 3 is fixedly installed between two adjacent short sleeves 2. The inner end of each annular extrusion plate 3 is fixedly installed together with the corresponding position on the outer side of the roller 4. The outer ends of all annular extrusion plates 3 protrude from the outer circumferential surface of the short sleeve 2 to form an extrusion cutting edge. Each short sleeve 2 is provided with at least one row of crushing cone mounting holes that are internally and externally connected. Each crushing cone mounting hole group includes several crushing cone mounting through holes 6 distributed circumferentially. Any row of crushing cone mounting through holes 6 distributed axially is spirally distributed around the rotation axis 1. A crushing cone is provided in each crushing cone mounting through hole 6.

[0034] In the above technical solution, "row" refers to an arrangement along the direction of rotation axis 1, that is, along the length of roller 4, and "column" refers to an arrangement perpendicular to the rotation axis, that is, along the circumference or longitudinal section of roller 4. After all the crushing cones are installed, several crushing cones in the same row can form a crushing section spirally distributed around the rotation axis 1 on the crushing roller body. The arrangement effect of all the crushing sections on the crushing roller body is similar to the arrangement effect of the cutting edges on a multi-head milling cutter in existing known technology. Therefore, the number of crushing cone mounting through holes 6 in the crushing cone mounting hole group is equal to the number of required crushing sections. To ensure uniform crushing effect, the number of crushing cone mounting through holes 6 in all crushing cone mounting hole groups is the same.

[0035] The hollow roller 4 can further reduce the weight of the crushing roller, greatly reduce the production and processing cost of the crushing roller, and is more conducive to improving crushing efficiency. It can also reduce the driving power and driving energy consumption of the crushing device.

[0036] The outer ends of the annular extrusion plate 3 protrude from the outer circumference of the short sleeve 2 to form an extrusion cutting edge, which assists in cutting and extruding asphalt waste material and accelerates the crushing speed of asphalt waste material; it can also separate the short sleeve 2 and the roller 4 by a certain distance, so that a vibration damping gap 5 can be left between the inner side of the short sleeve 2 and the outer side of the roller 4, further reducing the damage of mechanical vibration to the crushing roller.

[0037] Through the coordinated crushing of the spiral-arranged crushing section and the annular extrusion plate 3, the asphalt waste material can be better crushed and dispersed into a coarse-fine mixed crushed material that meets the requirements.

[0038] In this embodiment, each short sleeve 2 is provided with a row of internal and external through crushing cone mounting holes. Each crushing cone mounting hole group includes six crushing cone mounting through holes 6 distributed along the circumference. The axes of the six crushing cone mounting through holes 6 are coplanar, so that the outer side of the crushing roller body is provided with six crushing sections spirally distributed around the rotation axis 1.

[0039] Example 3: As an optimization of the above embodiments, as shown in the appendix Figures 1 to 2 As shown, the crushing cone includes a base 7 and a crushing cone body. One end of the base 7 is fixedly installed on the crushing roller body, and the other end of the base 7 is provided with a support platform 8. The support platform 8 has an outward-facing threaded hole 9 in the middle, and the tower-shaped crushing cone body is installed in the threaded hole 9.

[0040] With this design, the pagoda-shaped crushing cone body has a better crushing effect on asphalt waste; when the crushing cone body is damaged or severely worn, the threaded connection between the crushing cone body and the support platform 8 makes it easier to quickly replace the crushing cone body and reduce the difficulty of replacement; the split design can reduce the processing difficulty and external size of the crushing cone body, and also allows the crushing cone body and the base 7 to use different materials to strengthen and wear-resistant the crushing cone body.

[0041] Example 4: As an optimization of the above embodiments, as shown in the appendix Figures 1 to 2 As shown, the crushing cone body includes a cone shank section 10, a base section 11, a body section 12, a top section 13, and a tip section 14, with the external dimensions of the base section 11, body section 12, top section 13, and tip section 14 decreasing sequentially. The outer side of the cone shank section 10 is threaded together with the inner side of the threaded hole 9. A columnar base section 11 is fixedly installed at one end of the cone shank section 10 protruding from the support platform 8. A frustum-shaped body section 12 is provided in the middle of the top surface of the base section 11, and the outer diameter of the bottom end of the body section 12 is larger than the outer diameter of the top end. The middle of the top surface of the body section 12 is fixedly installed together with the bottom surface of the top section 13. The top section 13 is frustum-shaped and its external dimensions are smaller than those of the body section 12. A pointed cone-shaped tip section 14 is fixedly installed on the top surface of the top section.

[0042] During use, the top section 14 is the first to come into contact with the old asphalt block. The pointed top section 14 is more conducive to the crushing cone body penetrating into the old asphalt block. The top section 13 is larger than the top section 14, which can further break up the old asphalt block. The larger tower body section 12 can completely break up the old asphalt block, forming a coarse-fine mixed crushed material that meets the requirements.

[0043] The pagoda-shaped fracturing cone body can achieve multiple stages of fracturing, resulting in better fracturing effect.

[0044] Depending on the requirements, the shape of the spire 14 can be a multi-faceted pyramid or a cone, etc.

[0045] Example 5: As an optimization of the above embodiments, as shown in the appendix Figures 1 to 2 As shown, the spire 14 is an obtuse-angled cone.

[0046] This setup not only maintains good puncture effect at the tower tip, but also facilitates the dispersion of waste asphalt material, breaking it into a coarse-fine mixed crushed material that meets the requirements.

[0047] Example 6: As an optimization of the above example, the crushing cone body is an alloy crushing cone body.

[0048] This design improves the wear resistance and impact resistance of the crushing cone body, significantly extending its service life.

[0049] Example 7: As an optimization of the above embodiments, as shown in the appendix Figures 1 to 2 As shown, the transmission part is a four-section stepped shaft with an outer diameter that increases from left to right. From left to right, it consists of transmission section 15, first rotating support section 16, first shoulder section 17 and first connecting section 18. The first connecting section 18 is coaxially mounted with the left end of the crushing roller body.

[0050] With this configuration, the transmission section 15 can be connected to the output shaft of the drive motor; the first rotating support section 16 can be rotatably installed with the fracturing device, such as by installing rolling bearings, self-lubricating bushings, or copper bushings; the first shoulder section 17 is used for installation and positioning to ensure that the crushing roller body is installed in place and that the crushing roller body can rotate smoothly; the outer side of the first connecting section 18 can be fixedly installed together with the inner side of the left end of the roller 4 to achieve coaxial installation.

[0051] Example 8: As an optimization of the above embodiments, as shown in the appendix Figure 1 As shown, the support part is a three-section stepped shaft with an inner diameter decreasing from left to right. From left to right, it includes a second connecting section 19, a second shoulder section 20, and a second rotating support section 21. The second connecting section 19 is coaxially installed with the right end of the crushing roller body.

[0052] With this configuration, the outer side of the second connecting section 19 can be fixedly installed together with the inner side of the right end of the roller 4 to achieve coaxial installation; the second shoulder section 20 is used for installation and positioning to ensure that the crushing roller body is installed in place and that the crushing roller body can rotate smoothly; the second rotating support section 21 can be rotatably installed with the fracturing device, such as installing rolling bearings, self-lubricating bushings or copper bushings.

[0053] Example 9: As an optimization of the above embodiments, as shown in the appendix Figures 3 to 4As shown, the asphalt slag crushing device includes a frame 22, a feed hopper 23, a crushing box 24, a power output device 25, a jaw crusher, and an asphalt slag crushing roller. The feed hopper 23 and the crushing box 24 are arranged sequentially from top to bottom on the frame 22. The feed hopper 23 has an upward opening and is funnel-shaped. The discharge port 26 at the lower end of the feed hopper 23 is connected to the feed port at the upper end of the crushing box 24. The rear left side of the crushing box 24 has a through-hole transmission hole. The asphalt slag crushing roller is rotatably installed in the transmission hole. The right end of the asphalt slag crushing roller is rotatably installed with the corresponding position inside the right side of the crushing box 24. The left end of the asphalt slag crushing roller is connected to the output end of the power output device 25. The jaw crusher is installed in the crushing box 24 at the position in front of the asphalt slag crushing roller. A compression gap 27 is formed between the rear part of the jaw crusher and the front part of the asphalt slag crushing roller, which can crush the asphalt slag.

[0054] In the above technical solution, the frame 22 may include a gantry frame 22 for supporting the entire device, a central frame 22 for supporting components such as the crushing box 24, and a hopper frame 22 for supporting the feed hopper 23. The feed hopper 23, which opens upward and is funnel-shaped, can form a funnel-shaped feed hopper. The feed hopper 23 and the frame 22 are detachably installed so that the feed hopper 23 and the frame 22 can be separated, the crushing device can be moved, and its installation position can be changed.

[0055] The power output device 25 can be a combination of a rotary motor and a reducer or a geared motor in the prior art. The reducer can be a helical gear reducer, so that the output end of the power output device 25 can achieve low-speed and high-torque output, drive the asphalt block crushing roller to rotate at low speed, and enable the asphalt block crushing roller to cooperate with the jaw crushing mechanism to crush the asphalt block into crushed material that meets the requirements during the rotation process.

[0056] The jaw crusher mechanism can adopt the compression plate 33 mechanism, jaw plate spring avoidance mechanism, or fixed jaw plate structure found in this technical field, or it can adopt the crushing structure of the jaw crusher in the prior art. The asphalt waste block crushing roller and the crushing box 24 are rotatably mounted through rolling bearings or bearing seats with bearings.

[0057] A conveyor belt can be installed below the crushing box 24 to transport the crushed material to a designated location.

[0058] During use, the asphalt blocks initially selected by the loader enter the feed hopper 23 through the opening at the top of the feed hopper 23. The asphalt blocks enter through the feed inlet at the top of the feed hopper 23 and are discharged into the crushing box 24 through the discharge outlet 26 at the bottom. They fall into the compression gap 27 between the rear of the jaw crusher and the front of the asphalt block crushing roller. The power output device 25 drives the asphalt block crushing roller to rotate, and the asphalt blocks are crushed into a coarse-fine mixed crushed material that meets the requirements by the asphalt block crushing roller and the jaw crusher.

[0059] This utility model has a reasonable and compact structure and is easy to use. For asphalt blocks that have been initially selected by a loader, the asphalt block crushing roller combined with the jaw crushing mechanism can effectively crush the asphalt blocks with a single roller to obtain a finished product with a mixture of coarse and fine materials. Its structure is simple, occupies a small area, has a low overall cost, and is flexible in use. It does not require screening and can complete the processes of raw material feeding and finished material transfer using a loader. The production cost is low. When used with a small asphalt mixing plant, it is very suitable for temporary use at highway maintenance stations.

[0060] The above-mentioned asphalt waste block crushing device can be further optimized and / or improved according to actual needs: Example 10: As an optimization of the above embodiments, as shown in the appendix Figures 3 to 4 As shown, a discharge control mechanism is provided at the discharge port 26 at the lower end of the feed hopper 23. The discharge control mechanism includes a left connecting plate 28, a right connecting plate 29, an outlet baffle 30, and a linear actuator 32. The left connecting plate 28 and the right connecting plate 29 are rotatably installed at corresponding positions on the lower left and lower right sides of the feed port. The lower ends of the left connecting plate 28 and the right connecting plate 29 are both arc-shaped. An arc-shaped outlet baffle 30 is fixedly installed between the lower ends of the left connecting plate 28 and the right connecting plate 29. A drive plate 31 is fixedly installed in the middle of the right side of the right connecting plate 29. A linear actuator 32 that can extend and retract back and forth is hinged on the drive plate 31. The front end of the linear actuator 32 is hinged together with the corresponding position of the right front part of the frame 22.

[0061] During use, the linear actuator 32 retracts forward, pulling the drive plate 31 forward. The drive plate 31 pulls the connecting plate forward, and the right connecting plate 29 drives the outlet baffle 30 to rotate forward together. By controlling the degree of obstruction of the outlet baffle 30 on the discharge port 26 at the lower end of the feed hopper 23, the opening size of the discharge port 26 is controlled, thereby controlling the feed amount and feed speed of this device.

[0062] Depending on the requirements, the linear actuator 32 can be implemented using a hydraulic cylinder or a pneumatic cylinder in the prior art, or it can be implemented using a rotary motor driving a gear and rack mechanism. In this embodiment, the linear actuator 32 is a hydraulic cylinder, therefore the device is also equipped with a hydraulic power unit to serve the hydraulic cylinder.

[0063] Example 11: As an optimization of the above embodiments, as shown in the appendix Figures 3 to 4As shown, the jaw crusher includes an extrusion plate 33, a crushing tooth plate 34, a support arm 35, and a spring clearance mechanism. The extrusion plate 33 is installed in the crushing box 24 corresponding to the position in front of the asphalt block crushing roller. At least one crushing tooth plate 34 is installed on the rear side of the extrusion plate 33, and the rear end of the crushing tooth plate 34 is located in front of the asphalt block crushing roller. The left end and the rear end of the extrusion plate 33 are respectively detachably installed with support arms 35. The front side of the crushing box 24 corresponding to the position of each support arm 35 is provided with clearance openings for the support arm 35 to move back and forth. The front parts of the two support arms 35 pass through the corresponding clearance openings and are rotatably installed together with the front part of the frame 22 through the bracket 37. A spring clearance mechanism is provided between the rear part of each support arm 35 and the front part of the crushing box 24.

[0064] In the above technical solution, the spring avoidance mechanism can be implemented using the spring avoidance mechanism in the existing technology of jaw crusher. The magnitude of the avoidance force of the jaw crusher can be achieved by adjusting the compression force of the spring, such as by replacing the spring or combining springs. The spring avoidance mechanism has an automatic overload avoidance function, which can prevent the device from being jammed by large material blocks and reduce damage to the crushing device.

[0065] The above-mentioned jaw crusher works in the same way as the moving jaw plate in the existing jaw crusher. The crushing teeth on the crushing tooth plate 34 cooperate with the crushing cone on the asphalt old material crushing roller to crush the asphalt old material into a mixture of coarse and fine crushed material in one go.

[0066] In this embodiment, a number of crushing teeth are provided at intervals along the rear extension direction of the crushing tooth plate 34; two crushing tooth plates 34 are installed at intervals along the rear side of the extrusion plate 33 to achieve a better crushing effect; more crushing tooth plates 34 may also be provided to enhance the crushing effect of asphalt old material blocks.

[0067] Example 12: As an optimization of the above embodiments, as shown in the appendix Figure 4 As shown, the spring avoidance mechanism includes a connecting rod 36, a front adjusting ring 41, a rear adjusting ring 42, and a compression spring 43. A through-hole is provided on the front side of the crushing box 24 corresponding to the rear end position of the support arm 35. The connecting rod 36 is installed inside the avoidance hole, and its rear end is rotatably mounted to the rear part of the support arm 35. The rear outer side of the connecting rod 36 is threadedly connected to the rear adjusting ring 42. A compression spring 43 is fitted on the outer side of the connecting rod 36 corresponding to the position between the rear adjusting ring 42 and the front side plate of the crushing box 24. The front outer side of the connecting rod 36 is threaded, and the front outer side of the connecting rod 36 is threadedly connected to the front adjusting ring 41. The rear end of the front adjusting ring 41 abuts against the corresponding position on the front side of the crushing box 24. Both the outer side of the rear adjusting ring 42 and the outer side of the front adjusting ring 41 are provided with a wrench part for easy engagement of a wrench.

[0068] With this configuration, rotating the rear adjusting ring 42 allows for quick adjustment of the installation length of the compression spring 43, thereby adjusting the preload of the compression spring 43 and thus quickly adjusting the clearance force of the jaw crusher. Rotating the front adjusting ring 41 adjusts the size of the compression gap 27 between the jaw crusher and the asphalt block crushing roller, ensuring the normal clearance between the crushing roller and the crushing tooth plate 34. To prevent the front adjusting ring 41 and the rear adjusting ring 42 from loosening, two front adjusting rings 41 and two rear adjusting rings 42 can be provided.

[0069] Example 13: As an optimization of the above embodiments, as shown in the appendix Figures 3 to 4 As shown, a discharge guide plate 38 with a front-high and rear-low orientation is fixedly installed on the front side of the lower end of the crushing box 24. The discharge guide plate 38 is trapezoidal and the top dimension is smaller than the bottom dimension. The left and right sides of the bottom end of the discharge guide plate 38 are fixedly installed together with the corresponding positions of the bottom of the frame 22. Baffle plates 39 are provided on the left and rear sides of the discharge guide plate 38.

[0070] With this setup, under the influence of gravity, the crushed material (finished product) slides down the discharge guide plate 38 towards the rear of the crushing device, accumulating together. Once full, it can be transferred via loading equipment. Finally, the crushed material is either centrally stockpiled or directly fed into a mixer to produce finished product. The discharge guide plate 38 prevents finished product from accumulating below the crushing box 24, eliminating the need for conveying equipment, enabling rapid processing of finished product, and saving operating space.

[0071] Example 14: As an optimization of the above embodiments, as shown in the appendix Figures 3 to 4 As shown, the four corners of the lower end of the frame 22 are provided with foot fixing plates 40, and each foot fixing plate 40 is provided with several vertically penetrating connecting holes.

[0072] With this setup, the device can be fixed to the ground using anchor bolts.

[0073] The above technical features constitute various embodiments of this utility model, which have strong adaptability and implementation effect. Unnecessary technical features can be added or removed according to actual needs to meet the needs of different situations.

Claims

1. A device for crushing asphalt waste blocks, characterized in that... The machine includes a frame, a feed hopper, a crushing box, a power output device, a jaw crusher, and an asphalt slab crushing roller. The feed hopper and crushing box are arranged sequentially from top to bottom on the frame. The feed hopper has an upward-facing, funnel-shaped opening, and its lower outlet is connected to the upper inlet of the crushing box. A through-hole is located on the rear left side of the crushing box, within which an asphalt slab crushing roller is rotatably mounted. The right end of the asphalt slab crushing roller is rotatably mounted to a corresponding position inside the right side of the crushing box, and the left end of the asphalt slab crushing roller is connected to the output end of the power output device. A jaw crusher is located in the crushing box corresponding to the position in front of the asphalt slab crushing roller, forming a compression gap between the rear of the jaw crusher and the front of the asphalt slab crushing roller to crush the asphalt slab. The jaw crusher includes an extrusion plate, crushing teeth, support arms, and a spring clearance mechanism. An extrusion plate is located in the crushing box in front of the asphalt block crushing roller. At least one crushing tooth is installed on the rear side of the extrusion plate, with its rear end positioned in front of the asphalt block crushing roller. Several crushing teeth are spaced apart along the extension direction of the rear side of the crushing tooth. Support arms are detachably installed on the left and rear ends of the extrusion plate. A clearance opening is provided on the front side of the crushing box corresponding to each support arm position, allowing the support arm to move back and forth. The front parts of the two support arms pass through their respective clearance openings and are rotatably mounted to the front of the frame via a bracket. A spring clearance mechanism is provided between the rear of each support arm and the front of the crushing box. A discharge control mechanism is provided at the discharge port at the lower end of the feed hopper. The discharge control mechanism includes a left connecting plate, a right connecting plate, an outlet baffle, and a linear actuator. The left and right connecting plates are rotatably installed at corresponding positions on the lower left and lower right sides of the feed port. The lower ends of the left and right connecting plates are both arc-shaped. An arc-shaped outlet baffle is fixedly installed between the lower ends of the left and right connecting plates. A drive plate is fixedly installed in the middle of the right side of the right connecting plate. A linear actuator that can extend and retract back and forth is hinged on the drive plate. The front end of the linear actuator is hinged to the corresponding position on the right front of the frame.

2. The asphalt waste block crushing device according to claim 1, characterized in that the asphalt... The old material block crushing roller includes a crushing roller body. The outer side of the crushing roller body is provided with multiple crushing sections spirally distributed around the rotation axis. Each crushing section includes several crushing cones distributed at intervals along the axial direction. Each crushing cone can be detached and installed at the corresponding position on the crushing roller body. A transmission part that can be connected to a power output device is coaxially provided at the left end of the crushing roller body, and a support part is coaxially provided at the right end of the crushing roller body.

3. The asphalt waste block crushing device according to claim 2, characterized in that, The crushing roller body includes short sleeves, annular extrusion plates, and a hollow roller. The inner side of the left end of the roller is fixedly installed with the outer side of the right end of the transmission part, and the inner side of the right end of the roller is fixedly installed with the outer side of the left end of the support part. Several short sleeves are axially spaced on the outer side of the roller, and a vibration damping gap is left between the inner side of each short sleeve and the outer side of the roller. Annular extrusion plates are fixedly installed between two adjacent short sleeves. The inner end of each annular extrusion plate is fixedly installed with the corresponding position on the outer side of the roller. The outer ends of all annular extrusion plates protrude from the outer circumferential surface of the short sleeves to form extrusion cutting edges. Each short sleeve is provided with at least one row of internally and externally penetrating crushing cone mounting holes. Each crushing cone mounting hole group includes several crushing cone mounting through holes distributed circumferentially. Any row of crushing cone mounting through holes distributed axially is spirally distributed around the rotation axis. A crushing cone is provided in each crushing cone mounting through hole.

4. The asphalt waste block crushing device according to claim 2 or 3, characterized in that, The crushing cone includes a base and a crushing cone body. One end of the base is fixedly installed on the crushing roller body, and the other end of the base is provided with a support platform. The support platform has an outward-facing threaded hole in the middle, and the tower-shaped crushing cone body is installed in the threaded hole.

5. The asphalt waste block crushing device according to claim 4, characterized in that, The crushing cone body includes a cone shank section, a base section, a body section, a top section, and a tip section, with the external dimensions of the base section, body section, top section, and tip section decreasing sequentially. The outer side of the cone shank section is threaded together with the inner side of the threaded hole. A columnar base section is fixedly installed on one end of the cone shank section that protrudes from the support platform. A frustum-shaped body section is provided in the middle of the top surface of the base section, with the outer diameter of the bottom end of the body section being larger than the outer diameter of the top end. The middle of the top surface of the body section is fixedly installed together with the bottom surface of the top section. The top section is frustum-shaped and its external dimensions are smaller than those of the body section. A pointed cone-shaped tip section is fixedly installed on the top surface of the top section. Or / and, the spire is an obtuse-angled cone; Or / and, the crushing cone body is an alloy crushing cone body.

6. The asphalt waste block crushing device according to claim 2, 3, or 5, characterized in that, The transmission part is a four-section stepped shaft with an outer diameter that increases from left to right. From left to right, it consists of a transmission section, a first rotating support section, a first shoulder section, and a first connecting section. The first connecting section is coaxially mounted with the left end of the crushing roller body. Or / and, the support part is a three-section stepped shaft with an inner diameter decreasing from left to right, which includes a second connecting section, a second shoulder section and a second rotating support section from left to right. The second connecting section is coaxially installed with the right end of the crushing roller body.

7. The asphalt waste block crushing device according to claim 4, characterized in that, The transmission part is a four-section stepped shaft with an outer diameter that increases from left to right. From left to right, it consists of a transmission section, a first rotating support section, a first shoulder section, and a first connecting section. The first connecting section is coaxially mounted with the left end of the crushing roller body. Or / and, the support part is a three-section stepped shaft with an inner diameter decreasing from left to right, which includes a second connecting section, a second shoulder section and a second rotating support section from left to right. The second connecting section is coaxially installed with the right end of the crushing roller body.

8. The asphalt waste block crushing device according to claim 1, 2, 3, 5, or 7, characterized in that, The spring avoidance mechanism includes a connecting rod, a front adjusting ring, a rear adjusting ring, and a compression spring. A through-hole is provided on the front side of the crushing box corresponding to the rear end of the support arm. A connecting rod is installed within the avoidance hole, and its rear end is rotatably mounted to the rear part of the support arm. A rear adjusting ring is threaded to the outer side of the rear part of the connecting rod. A compression spring is fitted onto the outer side of the connecting rod corresponding to the position between the rear adjusting ring and the front side plate of the crushing box. The outer side of the front part of the connecting rod is threaded, and a front adjusting ring is threaded to the outer side of the front end of the connecting rod. The rear end of the front adjusting ring abuts against the corresponding position on the front side of the crushing box. Both the outer sides of the rear and front adjusting rings have wrench parts for easy engagement with a wrench. Or / and, a discharge guide plate is fixedly installed on the lower front side of the crushing box, which is inclined in the shape of front high and rear low. The discharge guide plate is trapezoidal and the top size is smaller than the bottom size. The left and right sides of the bottom of the discharge guide plate are fixedly installed together with the corresponding positions of the bottom of the frame. Baffle plates are provided on the left and rear sides of the discharge guide plate.

9. The asphalt waste block crushing device according to claim 1, 2, 3, 5, or 7, characterized in that, The frame is equipped with foot fixing plates at the four corners of the bottom, and each foot fixing plate has several through-holes.

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