Crushing and screening device for road and bridge construction

Abstract

The invention relates to a crushing and screening device for road and bridge construction, and belongs to the technical field of road and bridge construction equipment. The device comprises a crushing mechanism, a screening mechanism and a collecting mechanism, and the crushing mechanism is provided with a feeding port and used for crushing materials; the screening mechanism is arranged below the crushing mechanism and comprises a shell, a horizontal driving assembly, a supporting assembly and a screening assembly, the upper end of the shell communicates with the crushing mechanism, the horizontal driving assembly, the supporting assembly and the screening assembly are all arranged in the shell, the horizontal driving assembly is connected with the shell, and the supporting assembly is slidably connected with the shell. The two horizontal driving assemblies are arranged on the two opposite sides of the supporting assembly correspondingly, the pushing directions of the two horizontal driving assemblies are opposite, the two horizontal driving assemblies move in sequence and push the supporting assembly to do horizontal reciprocating motion, and the screening assembly is connected with the supporting assembly and used for screening materials. The collecting mechanism is arranged below the screening mechanism and used for collecting materials screened out by the screening assembly. The crushing and screening equipment for construction has the effect of solving the problem of large use noise of the crushing and screening equipment for construction.

Description

Technical Field

[0001] The present application relates to the technical field of road and bridge construction equipment, and in particular to a crushing and screening device for road and bridge construction. Background Art

[0002] During the construction of roads and bridges, crushing and screening devices are one of the key equipment and are widely used in various road construction, bridge construction, mining and other fields. This type of device can efficiently crush materials into the required particle size and separate materials of different specifications through the screening mechanism, thereby improving construction efficiency and quality.

[0003] At present, after the materials are crushed, they are usually screened by vertical vibration, so that materials of different particle sizes can be screened to optimize the use effect.

[0004] However, in the vertical vibration mode, the material will repeatedly hit the screening plate during the screening process, which is prone to produce loud noise and is not conducive to providing a good working environment.

[0005] In the above-mentioned related technologies, there is a defect that the crushing and screening equipment used for construction produces relatively large noise when used. Summary of the invention

[0006] In order to improve the problem of high noise during use of crushing and screening equipment for construction, the present application provides a crushing and screening device for road and bridge construction.

[0007] The crushing and screening device for road and bridge construction provided in this application adopts the following technical solution: A crushing and screening device for road and bridge construction comprises: a crushing mechanism, wherein the crushing mechanism is provided with a feeding port, and the crushing mechanism is used to crush materials; a screening mechanism, wherein the screening mechanism is arranged below the crushing mechanism, and the screening mechanism comprises a shell, a horizontal driving assembly, a supporting assembly and a screening assembly, wherein the upper end of the shell is connected to the crushing mechanism, and the horizontal driving assembly, the supporting assembly and the screening assembly are all arranged in the shell, the horizontal driving assembly is connected to the shell, and the supporting assembly is slidably connected to the shell, the horizontal driving assembly is provided with two groups, and the two groups of the horizontal driving assemblies are respectively arranged at opposite sides of the supporting assembly, and the horizontal driving assembly is used to push the supporting assembly to move horizontally, and the pushing directions of the two groups of the horizontal driving assemblies are opposite and they move sequentially, so that the supporting assembly moves horizontally reciprocatingly, and the screening assembly is connected to the supporting assembly, and the screening assembly is used to screen materials; a collecting mechanism, wherein the collecting mechanism is arranged below the screening mechanism, and the collecting mechanism is used to collect materials screened out by the screening assembly.

[0008] By adopting the above technical scheme, the material crushed by the crushing mechanism enters the screening mechanism for screening; the shell of the screening mechanism provides support and containment, the support assembly is arranged in the shell and provides support for the screening assembly, and the screening assembly realizes horizontal reciprocating movement under the push of the horizontal drive assembly. Since the two groups of horizontal drive assemblies have opposite pushing directions and move sequentially, the horizontal movement of the support assembly is smoother, which effectively reduces the noise caused by vibration, thereby significantly reducing the noise level during the screening process; the collecting mechanism can efficiently collect the materials screened by the screening assembly to ensure the stability and reliability of the entire device.

[0009] Optionally, there are several screening assemblies, each of which is slidably connected to the supporting assembly, and the several screening assemblies are stacked. The bottom surface of the screening assembly is provided with several through holes, the diameter of the through holes of the screening assembly located above is larger than the diameter of the through holes of the screening assembly located below, the top of the screening assembly located below contacts the bottom of the screening assembly located above, and the top of the screening assembly located on the topmost layer contacts the top of the shell.

[0010] By adopting the above technical solution, several screening components are stacked, and the through hole diameter of the upper screening component is larger than the through hole diameter of the lower screening component, so that the material can be screened step by step to reduce dust flying; at the same time, the close contact between the screening components and the contact between the uppermost screening component and the top of the shell further reduce the possibility of dust escaping from the screening process.

[0011] Optionally, the screening assembly includes a screening shell and a screening plate, the screening shell is rectangular, the upper and lower ends of the screening shell are provided with openings, the screening plate is arranged in the screening shell, the screening plate is perpendicular to the side wall of the screening shell, and the screening plate is vertically spaced apart from the upper and lower ends of the screening shell.

[0012] By adopting the above technical solution, the screening plate and the upper and lower ends of the screening shell are vertically spaced. This design allows the screening plate to be used on both sides, reducing the wear of one side. At the same time, under the action of gravity, when the material is stuck, it can be turned over for automatic cleaning, thereby improving the screening efficiency and service life.

[0013] Optionally, the horizontal driving assembly includes a driving member, a rotating shaft and a cam, the driving member is connected to the shell, the output end of the driving member is transmission-connected to the rotating shaft, the cam is arranged on the rotating shaft, and the outer peripheral surface of the cam abuts against the supporting assembly to push the supporting assembly.

[0014] By adopting the above technical solution, the horizontal drive assembly can realize efficient and stable horizontal reciprocating movement of the supporting assembly; specifically, the driving member is connected to the shell and connected to the rotating shaft through the output end transmission, so as to ensure the reliability of power transmission; the cam is arranged on the rotating shaft, and its outer peripheral surface abuts the supporting assembly. When the rotating shaft rotates, the eccentric structure of the cam can periodically push the supporting assembly to move horizontally, thereby realizing the reciprocating vibration of the screening assembly through the cooperation of the two sets of horizontal drive assemblies, and effectively improving the screening efficiency and uniformity; at the same time, this structural design is simple and compact, and easy to maintain, which reduces the overall complexity and failure rate of the device.

[0015] Optionally, the support assembly includes a support body and a plurality of slide rail groups, the support body is slidably connected to the shell, the slide rail group is arranged on the support body, the screening shell is slidably connected to the slide rail group, and the slide rail group and the screening shell are arranged correspondingly, so that the screening shell can be detachably connected to the support assembly.

[0016] By adopting the above technical solution, the setting of the slide rail group enables the screening shell to slide smoothly along the slide rail, ensuring the stability and reliability of the screening process; at the same time, the slide rail group and the screening shell are set correspondingly, so that different screening shells can be easily installed and disassembled respectively, which is convenient for maintenance and replacement.

[0017] Optionally, the supporting assembly includes a plurality of rotating parts and a plurality of limiting parts, and the rotating parts and the limiting parts are both arranged corresponding to the screening shell. The lower end of the rotating part is rotatably connected to the supporting body, and the limiting part is connected to the supporting body. The limiting part is arranged on a side of the rotating part close to the screening shell, and the limiting part is used to limit the rotation angle of the rotating part. The upper end of the rotating part can rotate around the lower end of the rotating part to a horizontal position to prevent the screening shell from sliding out of the slide rail group.

[0018] By adopting the above technical solution, the limiter limits the rotation angle of the rotating part, ensuring the stability of the rotating part during operation, so that the upper end of the rotating part rotates around the lower end of the rotating part to the horizontal, effectively preventing the screening shell from sliding out of the slide rail group, enhancing the stability of the device, and allowing the screening shell to be stably limited on the supporting assembly, avoiding the risk of the screening shell falling off due to vibration during the screening process, thereby improving the safety and reliability of the device.

[0019] Optionally, the collecting mechanism includes a collecting body and two groups of shielding components, the shielding components are arranged in the collecting body, and along the length direction of the slide rail group, the two groups of shielding components are arranged at both ends of the supporting body, the shielding components include a slide plate and an elastic member, the collecting body is provided with a slide groove, the slide plate is slidably connected to the slide groove, one side of the slide plate abuts the supporting body, the other side of the slide plate is connected to the first end of the elastic member, and the other end of the elastic member is connected to the bottom of the slide groove, and the shielding assembly is used to separate the collecting mechanism from the screening mechanism.

[0020] By adopting the above technical solution, the coordinated use of the slide plate and the elastic member can automatically adjust the position when the supporting body moves, effectively separating the collecting body and the screening mechanism, so that the dust is concentrated in the screening component and the collecting mechanism, reducing the space where dust flies, making it easier to clean the dust, and reducing the possibility of dust generated during the screening process flying into the shell outside the screening component, thereby improving the quality of the operating environment.

[0021] Optionally, cabinet doors are provided on both end surfaces of the shell distributed along the length direction of the slide rail assembly.

[0022] By adopting the above technical scheme, cabinet doors are provided on both end surfaces of the shell, which can realize pulling out the screening shell from two directions, making it convenient for operators to carry out maintenance and cleaning from different directions, thereby improving the ease of use and work efficiency of the device; it is convenient for operators to inspect and maintain the internal screening components, thereby improving the maintainability of the device; at the same time, the design of the cabinet door can also effectively prevent external debris from entering the shell, thereby ensuring the cleanliness of the screening process and improving the screening efficiency and quality.

[0023] Optionally, a sponge layer is provided on the outer side of the side wall of the screening shell close to the cabinet door.

[0024] By adopting the above technical solution, the sponge layer can effectively absorb the vibration and noise generated during the screening process, reduce the impact of the device on the external environment during operation, and improve the environmental protection performance of the construction site; at the same time, the sponge layer can also protect the screening shell from external collision damage and extend the service life of the device.

[0025] Optionally, a dust suction mechanism is also included, which includes a dust suction drive and a dust suction pipeline, the dust suction drive is connected to the shell, the first end of the dust suction pipeline is connected to the dust suction drive, the second end of the dust suction pipeline is connected to the upper end of the shell, and the second end of the dust suction pipeline is located above the screening assembly.

[0026] By adopting the above technical solution, the dust collection mechanism can timely capture and discharge the dust concentrated in the screening component during the screening process, ensure the cleanliness of the working area, effectively reduce the dust overflow generated during the screening process, improve the quality of the working environment, and at the same time avoid the impact of dust on the device and extend the service life of the device.

[0027] In summary, the present application includes at least one of the following beneficial technical effects: 1. The horizontal driving assembly is used to push the supporting assembly to reciprocate horizontally, thus avoiding the problem of repeated impact of materials on the screening plate caused by the traditional vertical vibration method, significantly reducing the noise during the screening process and improving the quality of the working environment; 2. The multi-layer design of the screening component enables materials of different particle sizes to be screened step by step, ensuring the accuracy and efficiency of screening, while reducing the time of a single screening and improving the overall construction efficiency; 3. The setting of the collecting mechanism effectively collects the screened materials, prevents the materials from scattering, and ensures the cleanliness and safety of the construction site. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of a crushing and screening device for road and bridge construction according to an embodiment of the present application.

[0029] Figure 2 It is an internal schematic diagram of the screening mechanism and the collecting mechanism of an embodiment of the present application.

[0030] Figure 3 It is a top view of the screening mechanism and the collecting mechanism of the embodiment of the present application.

[0031] Figure 4 yes Figure 3 Cross-section view at AA in the middle.

[0032] Description of reference numerals: 1. Crushing mechanism; 11. Feeding port; 2. Screening mechanism; 21. Shell; 211. Cabinet door; 22. Horizontal drive assembly; 221. Drive member; 222. Rotating shaft; 223. Cam; 23. Support assembly; 231. Support body; 232. Slide rail group; 233. Rotating member; 234. Limiting member; 24. Screening assembly; 241. Through hole; 242. Screening shell; 243. Screening plate; 244. Sponge layer; 3. Collecting mechanism; 31. Collecting body; 32. Shielding assembly; 321. Slide plate; 322. Elastic member; 4. Dust suction mechanism; 41. Dust suction drive member; 42. Dust suction pipeline. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1 -Attached Figure 4The present application is further described in detail. In this embodiment, if not clearly specified, "connected", "connected" and "fixed" are understood in a broad sense, including fixed connection, detachable connection, connection to form an integral structure, mechanical connection, electrical connection, direct connection, indirect connection through an intermediary, internal connection and interaction between two elements, etc., which can be understood according to the specific circumstances.

[0034] In the present application, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact not directly but through another feature between them. Moreover, in the description of the present embodiment, the terms "above", "below", "left", "right", etc., and the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise specified, the orientation words used in the present application, such as "inside" and "outside", refer to the contours of the corresponding parts themselves.

[0035] like Figure 1 , Figure 2 and Figure 3 As shown, the embodiment of the present application discloses a crushing and screening device for road and bridge construction (hereinafter referred to as "device"). The device includes a crushing mechanism 1, a screening mechanism 2 and a collecting mechanism 3, which are used to crush and screen materials.

[0036] like Figure 1 , Figure 2 and Figure 4 As shown, the crushing mechanism 1 is provided with a feed port 11, through which the material is put into the crushing mechanism 1, and the material is crushed by the crushing mechanism 1. Specifically, the crushing mechanism 1 may include a feed hopper, a crushing roller and a motor. The feed hopper is used to receive the material to be crushed, and the crushing roller is arranged below the feed hopper and driven by a motor to crush the material. The motor can be a DC motor or a servo motor, and the appropriate power and speed can be selected according to actual needs. The crushing roller can be made of cast iron or high manganese steel, and the surface is provided with a wear-resistant coating to extend the service life. It can be understood that, in view of the existing structure of the crushing mechanism 1, a suitable crushing mechanism can be selected according to needs, and its specific structure and crushing principle will not be repeated here.

[0037] The screening mechanism 2 is arranged below the crushing mechanism 1, and includes a shell 21, a horizontal drive assembly 22, a support assembly 23 and a screening assembly 24. The upper end of the shell 21 is connected to the crushing mechanism 1, and the horizontal drive assembly 22, the support assembly 23 and the screening assembly 24 are all arranged in the shell 21, and the shell 21 provides support and accommodation. The horizontal drive assembly 22 is connected to the shell 21, and the support assembly 23 is slidably connected to the shell 21. There are two groups of horizontal drive assemblies 22, and the two groups of horizontal drive assemblies 22 are respectively arranged on opposite sides of the support assembly 23. The horizontal drive assembly 22 is used to push the support assembly 23 to move horizontally. The two groups of horizontal drive assemblies 22 push the support assembly 23 in opposite directions and move sequentially, so that the support assembly 23 moves horizontally back and forth to achieve sliding relative to the shell 21. The screening assembly 24 is connected to the support assembly 23 to screen materials under the horizontal movement of the support assembly 23. Each group of horizontal driving components 22 may include two horizontal driving components 22 . The horizontal driving components 22 in the same group are arranged at intervals on the same side of the supporting component 23 , so as to synchronously push the supporting component 23 to move in the same direction, thereby improving stability.

[0038] like Figure 1 , Figure 2 and Figure 4 As shown, the collecting mechanism 3 is arranged below the screening mechanism 2, and is used to collect the materials screened by the screening assembly 24. The collecting mechanism 3 may include a collecting box and a conveyor belt. The collecting box is used to collect the screened materials, and the conveyor belt is used to transport the materials to a designated location. The collecting box may be made of fiberglass or polyethylene material, and a dust cover may be provided inside to prevent dust from flying. The conveyor belt may be made of PVC or TPU material, which has good wear resistance and tensile resistance. The device reduces the collision kinetic energy between the material and the screening assembly 24 through the alternating push of two sets of horizontal drive assemblies 22, so that the horizontal movement of the support assembly 23 is smoother, the noise is significantly reduced, and the comfort of the working environment is improved.

[0039] like Figure 1 , Figure 2 and Figure 4As shown, the housing 21 of the screening mechanism 2 is a rectangular parallelepiped, with an opening at the upper end, which is connected to the outlet of the crushing mechanism 1. The horizontal driving assembly 22 includes a driving member 221, a rotating shaft 222 and a cam 223, and the driving member 221 is connected to the inner wall of the housing 21. The driving member 221 can adopt a stepper motor, and the output end of the stepper motor is connected to the rotating shaft 222 to drive the rotating shaft 222 to rotate around its own axis. The cam 223 is arranged on the rotating shaft 222, and the outer peripheral surface of the cam 223 is in contact with the support assembly 23. Through the rotation of the cam 223, the eccentric structure of the cam 223 can periodically push the support assembly 23 to move horizontally, so that the reciprocating vibration of the screening assembly 24 is realized through the cooperation of the two sets of horizontal driving assemblies 22, and the screening efficiency and uniformity are effectively improved. In order to further reduce the noise, a flexible pad can be added on the contact surface between the cam 223 and the support assembly 23. The flexible pad can be made of rubber or silicone material to play a buffering role, reduce the hard collision between the cam 223 and the support assembly 23, and reduce the noise. By adding a flexible pad on the contact surface between the cam 223 and the support assembly 23, the hard collision between the cam 223 and the support assembly 23 is reduced, and the noise is further reduced.

[0040] The screening assembly 24 includes a screening shell 242 and a screening plate 243. The screening shell 242 is rectangular, and openings are provided at the upper and lower ends so that materials can pass through and be screened. The screening plate 243 is arranged in the screening shell 242, perpendicular to the side wall of the screening shell 242, and the screening plate 243 and the upper and lower ends of the screening shell 242 are vertically spaced, so that the screening plate 243 can be used on both sides, reducing the wear of one side. At the same time, under the action of gravity, when the material is stuck, it can be turned over to achieve automatic cleaning, thereby improving the screening efficiency and service life. The screening plate 243 can be made of stainless steel or titanium alloy material, which has high strength and corrosion resistance. The inner wall of the screening shell 242 can be provided with an elastic pad, which can be made of rubber or silicone material to play a buffering role, reduce the hard collision between the material and the screening plate 243, and further reduce the noise.

[0041] like Figure 1 , Figure 2 and Figure 4As shown, there are several screening assemblies 24, and the several screening assemblies 24 are all slidably connected to the support assembly 23, and the several screening assemblies 24 are stacked. The screening assembly 24 is provided with several through holes 241, and the diameter of the through hole 241 of the screening assembly 24 located at the top is larger than the diameter of the through hole 241 of the screening assembly 24 located at the bottom. This multi-layer screening design can achieve a more refined screening effect and improve the grading accuracy of the material. The top of the screening assembly 24 located at the bottom contacts the bottom of the screening assembly 24 located at the top, and the top of the screening assembly 24 located at the top layer contacts the top of the shell 21. The close contact between the screening assemblies 24 and the contact between the topmost screening assembly 24 and the top of the shell 21 further reduce the possibility of dust escaping from the screening process to the outside of the screening assembly 24.

[0042] The support assembly 23 includes a support body 231 and a plurality of slide rail groups 232. The support body 231 is slidably connected to the housing 21, the slide rail group 232 is arranged on the support body 231, and the screening shell 242 is slidably connected to the slide rail group 232. The slide rail group 232 is arranged on the support body 231, and the slide rail group 232 is arranged corresponding to the screening shell 242, so that the screening shell 242 can be detachably connected to the support assembly 23. In this embodiment, each slide rail group 232 includes two slide rails, and the two slide rails of each slide rail group 232 are arranged horizontally at intervals, and are all slidably connected to the bottom of the screening shell 242, so that the screening shell 242 can slide stably. The slide rail group 232 is arranged corresponding to the screening shell 242, so that different screening shells 242 can be conveniently installed and disassembled respectively, which is convenient for maintenance and replacement. The support body 231 can be made of high-strength aluminum alloy or carbon fiber composite material to ensure sufficient rigidity and light weight. The structure of the support body 231 is not limited, as long as it can meet the use needs. In this embodiment, the support body 231 includes a support frame and guide rods. The support frame is rectangular and has a plurality of guide rods disposed therein. The guide rods are disposed corresponding to the slide rail group 232. The guide rods are used to set up the slide rail group 232 so that the slide rail group 232 can protrude from the support frame, so that the screening shell 242 can slide smoothly and slide away from the slide rail group 232. The guide rods can be made of stainless steel or alloy material, which has high strength and wear resistance.

[0043] like Figure 1 , Figure 2 and Figure 4As shown, the support assembly 23 includes a plurality of rotating members 233 and a plurality of limiting members 234, and the rotating members 233 and the limiting members 234 are both arranged corresponding to the screening shell 242. The lower end of the rotating member 233 is rotatably connected to the support body 231, and the limiting member 234 is connected to the support body 231. The limiting member 234 is arranged on one side of the rotating member 233 close to the screening shell 242, and the limiting member 234 is used to limit the rotation angle of the rotating member 233 in the vertical plane. The upper end of the rotating member 233 can rotate around the lower end of the rotating member 233 to a horizontal position to prevent the screening shell 242 from sliding out of the slide rail assembly 232. The stopper 234 limits the rotation angle of the rotating member 233, ensuring the stability of the rotating member 233 during operation, so that the upper end of the rotating member 233 rotates around the lower end of the rotating member 233 to a horizontal position, effectively preventing the screening shell 242 from sliding out of the slide rail assembly 232, enhancing the stability of the device, and enabling the screening shell 242 to be stably limited on the support assembly 23, avoiding the risk of the screening shell 242 falling off due to vibration during the screening process, and improving the safety and reliability of the device. It is understandable that both ends of the horizontal movement direction of the screening shell 242 can be rotated by the rotating member 233 and the stopper 234 to improve the limiting effect on the screening shell 242.

[0044] The collecting mechanism 3 includes a collecting body 31 and two sets of shielding components 32, and the shielding components 32 are arranged in the collecting body 31. Along the length direction of the slide rail group 232, the two sets of shielding components 32 are arranged at both ends of the supporting body 231. The shielding components 32 include a slide plate 321 and an elastic member 322. The collecting body 31 is provided with a slide groove, and the slide plate 321 is slidably connected to the slide groove. One side of the slide plate 321 abuts against the supporting body 231, and the other side of the slide plate 321 is connected to the first end of the elastic member 322, and the other end of the elastic member 322 is connected to the bottom of the slide groove. The shielding components 32 are used to separate the collecting body 31 and the screening mechanism 2. The coordinated use of the slide plate 321 and the elastic member 322 can automatically adjust their position when the support body 231 moves, effectively separating the collecting body 31 from the screening mechanism 2, so that the dust is concentrated in the screening component 24 and the collecting mechanism 3, and reducing the possibility of dust generated during the screening process flying into the shell 21 outside the screening component 24, reducing the space for dust flying, facilitating dust cleaning, and improving the quality of the operating environment, which helps to protect the operators.

[0045] like Figure 1 , Figure 2 and Figure 4As shown, both end surfaces of the housing 21 along the length direction of the slide rail group 232 are provided with cabinet doors 211, which can realize the pulling and pulling of the screening shell 242 from two directions, which is convenient for operators to maintain and clean from different directions, and improves the convenience and work efficiency of the device. At the same time, it is convenient for operators to inspect and maintain the internal screening components, and improve the maintainability of the device. In addition, the design of the cabinet door 211 can effectively prevent external debris from entering the interior of the housing 21, ensure the cleanliness of the screening process, improve the screening efficiency and quality; and also reduce the internal dust overflow. A sponge layer 244 is provided on the outer side of the side wall of the screening shell 242 near the cabinet door 211. The sponge layer 244 can be made of high-density sponge material, which has good sound insulation effect and further reduces noise. The sponge layer 244 is provided with a notch to avoid the slide rail group 232 so that the screening shell 242 can slide smoothly. Specifically, the slide plate 321 can be made of stainless steel or aluminum plate, which has high strength and wear resistance. The elastic member 322 can be a spring or a rubber spring, which plays a role of buffering and resetting, reduces the hard collision between the slide plate 321 and the support body 231, and reduces noise. The slide groove can be made of stainless steel or aluminum alloy material, which has high strength and corrosion resistance. The cabinet door 211 can be made of metal material, and a sealing strip is provided on the edge to prevent dust leakage.

[0046] like Figure 1 , Figure 2 and Figure 4 As shown, the device also includes a dust collection mechanism 4, which includes a dust collection drive 41 and a dust collection pipeline 42. The dust collection drive 41 is connected to the shell 21, the first end of the dust collection pipeline 42 is connected to the dust collection drive 41, and the second end of the dust collection pipeline 42 is connected to the upper end of the shell 21. The dust collection drive 41 can be a fan or a vacuum pump, and the dust collection pipeline 42 can be made of flexible pipes to meet the needs of different working conditions. The dust collection drive 41 can be connected to a dust collection box for collecting dust. The second end of the dust collection pipeline 42 can be fixed to the upper end of the shell 21 by a clamp, which is convenient for installation and disassembly. The dust collection mechanism 4 can effectively capture dust in the screening process and further improve the working environment. Since the dust is mainly concentrated in the screening component 24, the second end of the dust suction pipe 42 is located above the screening component 24, so that the dust concentrated in the screening component 24 can be captured and discharged in time during the screening process. The screening component is connected to the collecting body 31, and the dust suction mechanism 4 can assist in sucking out the dust in the collecting mechanism 3, ensuring the cleanliness of the working area, effectively reducing the dust overflow generated during the screening process, improving the quality of the working environment, and at the same time avoiding the influence of dust on the device and extending the service life of the device.

[0047] It can be understood that the device also includes necessary structures for functions such as connection, support, driving, positioning, limiting, sealing and control so that the device can operate normally; parameters such as the shape, size, material and setting quantity of each part of the device can be determined as needed as long as the corresponding functions can be achieved.

[0048] The implementation principle of a crushing and screening device for road and bridge construction in an embodiment of the present application is: through the alternating push of two groups of horizontal driving components 22, the support component 23 moves back and forth horizontally in the shell 21, driving the screening component 24 to vibrate horizontally, thereby realizing material screening; since the horizontal vibration reduces the collision frequency between the material and the screening plate 243, the noise is significantly reduced, and the comfort of the working environment is improved.

[0049] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A crushing and screening device for road and bridge construction, characterized in that: include: A crushing mechanism (1), wherein the crushing mechanism (1) is provided with a material inlet (11), and the crushing mechanism (1) is used for crushing materials; A screening mechanism (2), wherein the screening mechanism (2) is arranged below the crushing mechanism (1), and the screening mechanism (2) comprises a shell (21), a horizontal drive assembly (22), a support assembly (23) and a screening assembly (24), wherein the upper end of the shell (21) is connected to the crushing mechanism (1), the horizontal drive assembly (22), the support assembly (23) and the screening assembly (24) are all arranged in the shell (21), the horizontal drive assembly (22) is connected to the shell (21), and the support assembly (23) is connected to the shell (21). ) is slidably connected to the shell (21), the horizontal drive assembly (22) is provided with two groups, the two groups of the horizontal drive assembly (22) are respectively arranged on opposite sides of the support assembly (23), the horizontal drive assembly (22) is used to push the support assembly (23) to move horizontally, the two groups of the horizontal drive assembly (22) push in opposite directions and move sequentially, so that the support assembly (23) moves horizontally back and forth, the screening assembly (24) is connected to the support assembly (23), and the screening assembly (24) is used to screen materials; A collecting mechanism (3), wherein the collecting mechanism (3) is arranged below the screening mechanism (2), and the collecting mechanism (3) is used to collect materials screened out by the screening assembly (24).

2. The crushing and screening device for road and bridge construction according to claim 1, characterized in that: A plurality of the screening assemblies (24) are provided, and the plurality of the screening assemblies (24) are all slidably connected to the supporting assembly (23). The plurality of the screening assemblies (24) are stacked, and a plurality of through holes (241) are provided on the bottom surface of the screening assemblies (24). The diameter of the through holes (241) of the screening assemblies (24) located at the top is larger than the diameter of the through holes (241) of the screening assemblies (24) located at the bottom. The top of the screening assemblies (24) located at the bottom contacts the bottom of the screening assemblies (24) located at the top, and the top of the screening assemblies (24) located at the topmost layer contacts the top of the shell (21).

3. The crushing and screening device for road and bridge construction according to claim 1, characterized in that: The screening assembly (24) comprises a screening shell (242) and a screening plate (243); the screening shell (242) is rectangular; the upper end and the lower end of the screening shell (242) are both provided with openings; the screening plate (243) is arranged in the screening shell (242); the screening plate (243) is perpendicular to the side wall of the screening shell (242); and the screening plate (243) is vertically spaced apart from the upper end and the lower end of the screening shell (242).

4. The crushing and screening device for road and bridge construction according to claim 1, characterized in that: The horizontal driving assembly (22) comprises a driving member (221), a rotating shaft (222) and a cam (223); the driving member (221) is connected to the housing (21); the output end of the driving member (221) is drivingly connected to the rotating shaft (222); the cam (223) is arranged on the rotating shaft (222); the outer peripheral surface of the cam (223) abuts against the supporting assembly (23) to push the supporting assembly (23).

5. The crushing and screening device for road and bridge construction according to claim 3, characterized in that: The support assembly (23) comprises a support body (231) and a plurality of slide rail groups (232); the support body (231) is slidably connected to the shell (21); the slide rail group (232) is arranged on the support body (231); the screening shell (242) is slidably connected to the slide rail group (232); the slide rail group (232) and the screening shell (242) are arranged correspondingly, so that the screening shell (242) can be detachably connected to the support assembly (23).

6. The crushing and screening device for road and bridge construction according to claim 5, characterized in that: The support assembly (23) comprises a plurality of rotating parts (233) and a plurality of limiting parts (234); the rotating parts (233) and the limiting parts (234) are both arranged corresponding to the screening shell (242); the lower end of the rotating part (233) is rotatably connected to the support body (231); the limiting part (234) is connected to the support body (231); the limiting part (234) is arranged on a side of the rotating part (233) close to the screening shell (242); the limiting part (234) is used to limit the rotation angle of the rotating part (233); the upper end of the rotating part (233) can rotate around the lower end of the rotating part (233) to a horizontal position, so as to prevent the screening shell (242) from sliding out of the slide rail assembly (232).

7. The crushing and screening device for road and bridge construction according to claim 5, characterized in that: The collecting mechanism (3) comprises a collecting body (31) and two groups of shielding components (32). The shielding components (32) are arranged in the collecting body (31). Along the length direction of the slide rail group (232), the two groups of shielding components (32) are arranged at both ends of the supporting body (231). The shielding components (32) comprise a slide plate (321) and an elastic member (322). The collecting body (31) is provided with a slide groove. The slide plate (321) is slidably connected to the slide groove. One side of the slide plate (321) abuts against the supporting body (231), the other side of the slide plate (321) is connected to the first end of the elastic member (322), and the other end of the elastic member (322) is connected to the bottom of the slide groove. The shielding components (32) are used to separate the collecting mechanism (3) from the screening mechanism (2).

8. The crushing and screening device for road and bridge construction according to claim 5, characterized in that: Cabinet doors (211) are provided on both end surfaces of the housing (21) distributed along the length direction of the slide rail assembly (232).

9. The crushing and screening device for road and bridge construction according to claim 8, characterized in that: A sponge layer (244) is provided on the outer side of the side wall of the screening shell (242) close to the cabinet door (211).

10. The crushing and screening device for road and bridge construction according to claim 1, characterized in that: The invention also comprises a dust suction mechanism (4), wherein the dust suction mechanism (4) comprises a dust suction drive component (41) and a dust suction pipeline (42), wherein the dust suction drive component (41) is connected to the shell (21), a first end of the dust suction pipeline (42) is connected to the dust suction drive component (41), a second end of the dust suction pipeline (42) is connected to the upper end of the shell (21), and the second end of the dust suction pipeline (42) is located above the screening assembly (24).

Images