A stable operation vibrating screen for construction

Abstract

The utility model relates to vibrating screen technical field discloses a construction with vibrating screen of stable operation, including base, sieve box and sieve frame, the middle part fixedly connected with vibrating motor of sieve box front end outer wall has been set up in the middle part of both sides of sieve box outer wall second sliding slot, the middle part of second sliding slot inner wall front end and rear end has been set up and limited the groove, the middle part of both sides of base upper surface is fixedly connected with the fixed frame, the outer wall of fixed frame upper end adjacent both sides is fixedly connected with fixed plate. In the utility model, through the combination design of damping rod, a plurality of reset springs effectively absorb and slow down the vibration, improve equipment operation stability, at the same time, three layer screening layer design adapts to different particle size screening demand, and sliding slot and sliding plate make sieve plate and aggregate frame dismounting and installation convenient, simplify maintenance cleaning work, and aggregate frame is convenient for collecting and cleaning material, and can replace sieve plate adjustment screening specification flexibly, and overall adapt to various construction screening demand.

Description

Technical Field

[0001] This utility model relates to the field of vibrating screen technology, and in particular to a vibrating screen for building construction that operates stably. Background Technology

[0002] A vibrating screen for construction is a device used for screening and grading building materials. It separates materials of different particle sizes through vibration. This equipment mainly consists of a screen box, vibrator, and screen mesh. The high-frequency vibration generated by the vibrator causes the material to jump and tumble on the screen mesh, thus achieving the purpose of screening and grading. Vibrating screens are widely used in construction for screening and grading materials such as sand, gravel, cement, and concrete, improving construction efficiency and ensuring construction quality. Furthermore, vibrating screens are characterized by their simple structure, convenient operation, and high screening efficiency.

[0003] Patent application CN202121281510.2 discloses a stable vibrating screen for construction, comprising a damping mechanism, a vibrating mechanism, and a support mechanism. The vibrating mechanism is located at the top of the damping mechanism, and the support mechanism is located at the bottom of the damping mechanism. The damping mechanism includes a support plate, a vibration spring fixedly installed at the top center of the support plate, and pads fixedly installed around the top of the support plate. A damping spring is fixedly installed between the pads, and a telescopic cylinder is movably installed inside the damping spring. A telescopic rod is movably installed at the top of the telescopic cylinder. This invention uses wear-resistant pads to buffer the material when it falls, avoiding friction and impact that could damage the feed hopper. At the same time, the damping spring reduces the vibration force transmitted to the support frame, and the telescopic rod extends and retracts within the telescopic cylinder to generate damping force that cancels out the vibration force. This ensures that the bottom support is not affected by vibration during vibration, increasing the stability of the support.

[0004] The structural design of the vibrating screen proposed in the aforementioned patent documents makes the disassembly and installation of the screen plate and the collection frame complex. This not only increases the labor intensity of operators but also extends the maintenance time of the equipment. In addition, its complex structure makes cleaning inside the equipment difficult, and material residues are easily accumulated. This not only affects the screening effect but also shortens the service life of the equipment. On the other hand, the vibrating screen proposed in the aforementioned patent documents adopts a fixed screening specification design, which cannot be flexibly adjusted according to the needs of different particle sizes and types of materials. This limits the application of the equipment in various construction environments and makes it difficult to meet diverse screening needs. When it is necessary to change the screening specification, it is often necessary to replace the entire screen plate or make complex adjustments, which is not only time-consuming and labor-intensive but also significantly increases the operating cost of the equipment.

[0005] Therefore, those skilled in the art have provided a stable vibrating screen for building construction to solve the problems mentioned in the background art. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a stable vibrating screen for construction. Through a combination of damping rods and multiple return springs, it effectively absorbs and mitigates vibration, ensuring the safe positioning of the screen box and improving equipment operational stability. Simultaneously, the three-layer screening design adapts to different particle size screening requirements. The sliding groove and sliding plate facilitate the disassembly and installation of the screen plate and collection frame, simplifying maintenance and cleaning. The collection frame facilitates material collection and cleaning, and the screen plate can be flexibly replaced to adjust screening specifications, comprehensively adapting to various construction screening needs.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A stable vibrating screen for construction includes a base, a screen box, and a screen frame. A fixed box is fixedly connected to the upper surface of the base. The lower end of the screen box is located inside the upper end of the fixed box. A first mounting groove is formed on the outer wall of the lower front end of the fixed box. A first sliding groove is formed in the middle of both sides of the inner wall of the first mounting groove. A material collection frame is arranged inside the first mounting groove. A first sliding plate is fixedly connected to the middle of both sides of the outer wall of the material collection frame. The outer wall of the screen frame is tightly fitted to the inner wall of the screen box. The outer wall of the front end of the screen frame is formed by... The device is provided with two second mounting slots. A third sliding groove is provided in the middle of both sides of the inner wall of the second mounting slot. A first screen plate is tightly attached to the inner wall of the upper second mounting slot, and a second screen plate is tightly attached to the inner wall of the lower second mounting slot. The outer walls of the first and second screen plates are tightly attached to the inner wall of the screen box. A second sliding plate is fixedly connected to the middle of both sides of the outer walls of the first and second screen plates. The outer walls of the second sliding plates are slidably attached to the inner wall of the third sliding groove. Screen holes are provided on the inner bottom surface of the screen frame and the screen box. Through the above technical solution, the tight fit between the screen frame and the inner wall of the screen box, and the precise installation of the first and second screen plates, ensures the uniform distribution of materials during the screening process, improving screening efficiency. The design of the first and second screen plates and the screen holes gives the device three screening layers, adapting to screening requirements of different particle sizes. Furthermore, the design of the sliding groove and sliding plate makes the disassembly and installation of the screen plates and the collection frame more convenient, simplifying equipment maintenance and cleaning. The design of the collection frame facilitates the collection of screened materials and allows for easy removal and cleaning. In addition, by replacing screen plates with different aperture sizes, the screening specifications can be flexibly adjusted to adapt to different screening requirements.

[0008] Furthermore, a vibration motor is fixedly connected to the middle of the outer wall of the front end of the screen box. A second sliding groove is opened in the middle of both sides of the outer wall of the screen box. A limit groove is opened in the middle of the front and rear ends of the inner wall of the second sliding groove. A fixed frame is fixedly connected to the middle of both sides of the upper surface of the base. A fixed plate is fixedly connected to the outer wall of the upper adjacent sides of the fixed frame. A fixed block is fixedly connected to the front and rear ends of the outer wall of the fixed plate. A damping rod is fixedly connected to the inner bottom surface and inner top surface of the second sliding groove. The telescopic ends of the damping rod are fixedly connected to the upper and lower ends of the fixed plate. A first return spring is sleeved on the outside of the damping rod. The outer walls of the fixed plate and the fixed block are slidably fitted with the interior of the second sliding groove and the limit groove, respectively. The outer walls of the upper adjacent sides of the fixed frame are slidably fitted with the two sides of the outer wall of the screen box. A second return spring is fixedly connected to the upper and lower ends of the fixed block. The side of the second return spring away from the center of the fixed plate is fixedly connected to the inner wall of the limit groove. The above technical solution provides a stable vibration source by fixing the vibration motor to the middle of the outer wall of the front end of the screen box, which helps to achieve a uniform screening effect. The combined design of the damping rod, the first return spring, and the second return spring can effectively absorb and reduce vibration, preventing excessive vibration from being transmitted to the screen box and the base, thereby improving the operational stability of the equipment. The design of the second sliding groove and the limiting groove allows the fixed frame and its fixed plates and fixed blocks to slide on both sides of the screen box, and achieves precise positioning through the limiting groove. The setting of the fixed frame, fixed plates, and fixed blocks increases the structural strength and rigidity of the entire equipment, ensuring the stability and reliability of the equipment during operation. The design of the limiting groove and the fixed block ensures the safe positioning of the screen box during operation, preventing accidental movement or detachment.

[0009] Furthermore, a top cover is hinged to the outer wall of the rear end of the screen box, the lower surface of the top cover is tightly fitted to the upper surface of the screen box, and a feed funnel is connected through the middle of the upper surface of the top cover. The top cover and the screen box are fixed by a locking buckle. Through the above technical solutions, the design of the feeding funnel allows materials to enter the screen box smoothly, avoiding material spillage and waste during the feeding process. The tight fit between the top cover and the screen box effectively prevents material splashing and overflow during the screening process, improving the equipment's sealing performance and maintaining a clean working environment. The hinged connection of the top cover allows it to be easily opened and closed, facilitating cleaning and maintenance of the screen box by operators. In addition, the locking mechanism ensures a firm connection between the top cover and the screen box, guaranteeing the stability of the equipment during operation.

[0010] Furthermore, a PLC control panel is fixedly connected to the middle of the outer wall of the front end of the base, brake casters are fixedly connected to the four corners of the lower surface of the base, and a battery panel is installed inside the base. The above technical solution uses a PLC control panel to control the operation of the entire equipment. The design of the braked casters allows the vibrating screen to be easily moved to different work locations to adapt to the changing needs of the construction site. At the same time, the braking function ensures the stability of the equipment during the screening process and prevents accidental movement. In addition, the solar panel provides the equipment with the ability to be self-sufficient in power.

[0011] Furthermore, the side of the first return spring away from the center of the fixed plate is fixedly connected to the inner bottom surface and the inner top surface of the second sliding groove, and the side of the first return spring near the center of the fixed plate is fixedly connected to the upper end and the lower end of the fixed plate. Through the above technical solution, the first reset spring plays a buffering role during equipment operation, which can effectively absorb and reduce the impact force caused by vibration, protect the equipment structure from damage, and extend the service life of the equipment.

[0012] Furthermore, the outer wall of the first sliding plate is slidably attached to the inner wall of the first sliding groove, and the outer wall of the material collection frame is slidably attached to the inner wall of the first mounting groove; The above technical solution, through the sliding fit design, makes it easier to disassemble and install the material collection frame and the first sliding plate, thereby facilitating equipment maintenance and cleaning, reducing downtime and improving equipment availability.

[0013] Furthermore, the screen frame is fixedly connected to the four corners at the top of the screen box by fixing bolts; The above technical solution enhances the structural stability between the screen frame and the screen box by using fixed bolts at the four corners. The stable structure ensures that the screen frame will not produce excessive shaking or displacement when vibrating. The bolt connection makes it easier to disassemble and replace the screen frame and the screen box. When it is necessary to repair or replace the screen, the operator can quickly loosen the bolts to carry out the corresponding maintenance work, thereby reducing downtime.

[0014] Furthermore, a handle is fixedly connected to the middle of the front outer wall of the material collection frame, and a rectangular groove is opened in the middle of the front outer wall of the first screen plate and the second screen plate. Handles are fixedly connected to the middle of both sides of the upper surface of the screen box. The above technical solution facilitates the movement and handling of the material collection frame by the handle, and the rectangular groove serves as a gripping position, making it easier to remove and install the screen plate when it needs to be replaced. The handle facilitates the overall transport of the screen box. The overall structural design takes into account the convenience of maintenance, and the connection and disassembly of each component are relatively simple, which is convenient for daily cleaning and maintenance.

[0015] This utility model has the following beneficial effects: 1. The present invention proposes a stable vibrating screen for construction, which has three screening layers through the design of the first screen plate, the second screen plate and the screen holes, to adapt to the screening requirements of different particle sizes. The design of the sliding groove and the sliding plate makes the disassembly and installation of the screen plate and the collection frame more convenient, simplifying the maintenance and cleaning of the equipment. The design of the collection frame facilitates the collection of screened materials and can be easily removed and cleaned. In addition, by changing the screen plate with different aperture, the screening specifications can be flexibly adjusted to adapt to different screening requirements.

[0016] 2. The construction vibrating screen proposed in this utility model has a stable operation. Through the combined design of damping rod, multiple first return springs and multiple second return springs, it can effectively absorb and reduce vibration, prevent excessive vibration from being transmitted to the screen box and base, thereby improving the operational stability of the equipment. In addition, the design of the limiting groove and the fixing block ensures the safe positioning of the screen box during operation and prevents accidental movement or falling off. Attached Figure Description

[0017] Figure 1 An isometric view of a stable vibrating screen for building construction proposed in this utility model; Figure 2 This is an exploded front view of a stable vibrating screen for building construction proposed in this utility model; Figure 3 This is a partial structural isometric view of a vibrating screen for building construction that operates stably, as proposed in this utility model. Figure 4 This is an exploded view of a portion of the structure of a stable vibrating screen for building construction proposed in this utility model; Figure 5 This is an exploded view of a portion of the structure of a stable vibrating screen for building construction proposed in this utility model. Figure 6 This is a partial exploded view of the structure of a stable vibrating screen for building construction proposed in this utility model.

[0018] Legend: 1. Base; 101. Braked universal wheel; 102. PLC control panel; 103. Battery board; 2. Fixing box; 201. First mounting slot; 202. First sliding slot; 3. Material collection frame; 301. First sliding plate; 302. Handle; 4. Screen box; 401. Vibration motor; 402. Second sliding slot; 403. Limiting slot; 5. Screen frame; 501. Handle; 502. Second mounting slot; 503. Third sliding slot; 504. Screen hole; 6. First screen plate; 601. Second screen plate; 602. Second sliding plate; 603. Rectangular slot; 7. Fixing frame; 701. Fixing plate; 702. Fixing block; 703. Damping rod; 704. First return spring; 705. Second return spring; 8. Top cover; 801. Feed hopper; 9. Lock. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Reference Figure 1 , Figure 3 and Figure 4This utility model provides a specific embodiment: a stable vibrating screen for construction, including a base 1, a screen box 4, and a screen frame 5. A fixed box 2 is fixedly connected to the upper surface of the base 1. The lower end of the screen box 4 is located inside the upper end of the fixed box 2. A first mounting groove 201 is opened on the outer wall of the lower front end of the fixed box 2. A first sliding groove 202 is opened in the middle of both sides of the inner wall of the first mounting groove 201. A material collection frame 3 is arranged inside the first mounting groove 201. A first sliding plate 301 is fixedly connected to the middle of both sides of the outer wall of the material collection frame 3. The outer wall of the screen frame 5 is tightly fitted with the inner wall of the screen box 4. Two second mounting grooves 502 are opened on the outer wall of the front end of the screen frame 5. A third sliding groove 503 is opened in the middle of both sides of the inner wall of the second mounting groove 502. A first screen plate 6 is tightly fitted to the inner wall of the upper second mounting groove 502, and a second screen plate 601 is tightly fitted to the inner wall of the lower second mounting groove 502. The outer walls of the first screen plate 6 and the second screen plate 601 are both fitted with the screen box. The inner walls of the screen frame 5 and the screen box 4 are tightly fitted together. The middle of both sides of the outer walls of the first screen plate 6 and the second screen plate 601 are fixedly connected to the second sliding plate 602. The outer walls of the second sliding plate 602 are slidably fitted with the inner walls of the third sliding groove 503. The inner bottom surfaces of the screen frame 5 and the screen box 4 are provided with screen holes 504. Through the tight fit between the screen frame 5 and the inner walls of the screen box 4, and the precise installation of the first screen plate 6 and the second screen plate 601, the uniform distribution of materials during the screening process is ensured, and the screening efficiency is improved. The design of the first screen plate 6, the second screen plate 601 and the screen holes 504 makes the device have three screening layers, which can adapt to the screening requirements of different particle sizes. The design of the sliding groove and the sliding plate makes the disassembly and installation of the screen plate and the collection frame 3 more convenient, simplifying the maintenance and cleaning of the equipment. The design of the collection frame 3 makes it easy to collect the screened material, and it can be easily removed and cleaned. In addition, by replacing the screen plates with different apertures, the screening specifications can be flexibly adjusted to adapt to different screening requirements.

[0021] Reference Figure 2 , Figure 5 and Figure 6A vibrating motor 401 is fixedly connected to the middle of the front outer wall of the screen box 4. A second sliding groove 402 is provided in the middle of both sides of the outer wall of the screen box 4. A limit groove 403 is provided in the middle of the front and rear ends of the inner wall of the second sliding groove 402. A fixing frame 7 is fixedly connected to the middle of both sides of the upper surface of the base 1. A fixing plate 701 is fixedly connected to the outer wall of the upper adjacent sides of the fixing frame 7. A fixing block 702 is fixedly connected to the front and rear ends of the outer wall of the fixing plate 701. The inner bottom surface and inner surface of the second sliding groove 402... Damping rods 703 are fixedly connected to the top surface of each component. The telescopic ends of the damping rods 703 are fixedly connected to the upper and lower ends of the fixing plate 701. A first return spring 704 is sleeved on the outside of each damping rod 703. The outer walls of the fixing plate 701 and the fixing block 702 are slidably fitted with the inside of the second sliding groove 402 and the limiting groove 403, respectively. The outer walls of the upper adjacent sides of the fixing frame 7 are slidably fitted with the two sides of the outer wall of the screen box 4. A second return spring 705 is fixedly connected to the upper and lower ends of the fixing block 702. The second return spring 705 is fixedly connected to the inner wall of the limiting groove 403 on the side away from the center of the fixed plate 701. It is fixed to the middle of the front outer wall of the screen box 4 by the vibration motor 401, providing a stable vibration source and helping to achieve a uniform screening effect. The combined design of the damping rod 703, the first return spring 704 and the second return spring 705 can effectively absorb and reduce vibration, prevent excessive vibration from being transmitted to the screen box 4 and the base 1, thereby improving the operational stability of the equipment. The design of the second sliding groove 402 and the limiting groove 403 allows the fixed frame 7 and its fixed plate 701 and fixed block 702 to slide on both sides of the screen box 4, and achieve precise positioning through the limiting groove 403. The setting of the fixed frame 7, the fixed plate 701 and the fixed block 702 increases the structural strength and rigidity of the entire equipment, ensuring the stability and reliability of the equipment during operation. The design of the limiting groove 403 and the fixed block 702 ensures the safe positioning of the screen box 4 during operation and prevents accidental movement or falling off.

[0022] Reference Figure 1 , Figure 2 and Figure 6A top cover 8 is hinged to the outer wall of the rear end of the screen box 4. The lower surface of the top cover 8 fits tightly against the upper surface of the screen box 4. A feed funnel 801 is connected through the middle of the upper surface of the top cover 8. The top cover 8 and the screen box 4 are fixed together by a locking buckle 9. The design of the feed funnel 801 allows the material to enter the screen box 4 smoothly, avoiding material spillage and waste during the feeding process. The tight fit between the top cover 8 and the screen box 4 effectively prevents material from splashing and overflowing during the screening process, improving the sealing of the equipment and maintaining a clean working environment. The hinged connection of the top cover 8 allows it to be easily opened and closed, facilitating cleaning and maintenance of the inside of the screen box 4 by operators. In addition, the locking buckle 9 ensures a firm connection between the top cover 8 and the screen box 4, guaranteeing... To ensure the stability of the equipment during operation, a PLC control panel 102 is fixedly connected to the middle of the outer wall of the front end of the base 1. Braked casters 101 are fixedly connected to the four corners of the lower surface of the base 1. A battery panel 103 is installed inside the base 1. The PLC control panel 102 is used to control the operation of the entire equipment. The design of the brake casters 101 allows the vibrating screen to be easily moved to different working locations to adapt to the changing needs of the construction site. At the same time, the braking function ensures the stability of the equipment during the screening process and prevents accidental movement. In addition, the battery panel 103 provides the equipment with the ability to supply its own power. The side of the first return spring 704 away from the center of the fixed plate 701 is connected to the inner bottom surface and the inner top surface of the second sliding groove 402. All are fixedly connected. The first return spring 704 is fixedly connected to the upper and lower ends of the fixed plate 701 on one side near the center of the fixed plate 701. The first return spring 704 plays a buffering role during equipment operation, effectively absorbing and reducing the impact force caused by vibration, protecting the equipment structure from damage, and extending the service life of the equipment. The outer wall of the first sliding plate 301 slides against the inner wall of the first sliding groove 202, and the outer wall of the collecting frame 3 slides against the inner wall of the first mounting groove 201. The sliding contact design makes it easier to disassemble and install the collecting frame 3 and the first sliding plate 301, thereby facilitating equipment maintenance and cleaning. This reduces downtime and improves equipment availability. The four bends at the upper ends of the screen frame 5 and the screen box 4 are also fixedly connected. All corners are fixedly connected with bolts. Using bolts at the four corners enhances the structural stability between the screen frame 5 and the screen box 4. This stable structure ensures that the screen frame 5 will not experience excessive shaking or displacement during vibration. The bolt connections make disassembly and replacement of the screen frame 5 and screen box 4 more convenient. When maintenance or screen replacement is needed, operators can quickly loosen the bolts to perform the necessary maintenance, thus reducing downtime. A handle 302 is fixedly connected to the middle of the front outer wall of the collection frame 3. Rectangular grooves 603 are provided in the middle of the front outer walls of the first screen plate 6 and the second screen plate 601. Handles 501 are fixedly connected to the middle of both sides of the upper surface of the screen box 4. The handles 302 facilitate the movement and handling of the collection frame 3 by the operators.The rectangular groove 603 serves as a gripping point, making it easier to remove and install the screen plate when replacement is needed. The handle 501 facilitates the overall transport of the screen box 4. The overall structural design takes into account ease of maintenance; the connection and disassembly of each component are relatively simple, facilitating daily cleaning and maintenance.

[0023] Working principle: Material enters the screen box 4 through the feed funnel 801 on the top cover 8. The vibrating motor 401 generates high-frequency vibration, causing the material in the screen box 4 to vibrate, thereby achieving stratification and screening. The first screen plate 6 and the second screen plate 601 in the screen box 4 form a three-layer screening layer. Materials of different particle sizes are separated when passing through the screen holes 504. The collection frame 3 is used to collect the screened material and can be easily disassembled and cleaned through the sliding groove and sliding plate. The equipment achieves stable vibration control and position positioning through the combination design of the fixed frame 7, fixed plate 701, fixed block 702 and return spring, ensuring the uniformity and efficiency of screening. The PLC control panel 102 is used to control the operation of the equipment. The brake casters 101 provide convenient movement and operational stability. The overall design takes into account the convenience of maintenance. The connection and disassembly of each component are simple, facilitating daily cleaning and maintenance. Through the coordinated work of the vibrating motor 401, multi-layer screen plates, collection frame 3 and stabilizing device, this equipment achieves efficient and accurate material screening, while ensuring the stability and maintainability of the equipment operation.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A stable vibrating screen for construction, comprising a base (1), a screen box (4), and a screen frame (5), characterized in that: A fixed box (2) is fixedly connected to the upper surface of the base (1). The lower end of the screen box (4) is located inside the upper end of the fixed box (2). A first mounting groove (201) is provided on the outer wall of the lower front end of the fixed box (2). A first sliding groove (202) is provided in the middle of both sides of the inner wall of the first mounting groove (201). A material collection frame (3) is provided inside the first mounting groove (201). A first sliding plate (301) is fixedly connected to the middle of both sides of the outer wall of the material collection frame (3). The outer wall of the screen frame (5) is tightly fitted with the inner wall of the screen box (4). Two second mounting grooves (502) are provided on the outer wall of the front end of the screen frame (5). 2) A third sliding groove (503) is provided in the middle of both sides of the inner wall. The inner wall of the second mounting groove (502) at the upper end is tightly fitted with the first screen plate (6), and the inner wall of the second mounting groove (502) at the lower end is tightly fitted with the second screen plate (601). The outer walls of the first screen plate (6) and the second screen plate (601) are tightly fitted with the inner wall of the screen box (4). The middle of both sides of the outer walls of the first screen plate (6) and the second screen plate (601) are fixedly connected with the second sliding plate (602). The outer wall of the second sliding plate (602) is slidably fitted with the inner wall of the third sliding groove (503). The inner bottom surface of the screen frame (5) and the screen box (4) are provided with screen holes (504).

2. The vibrating screen for stable operation in building construction according to claim 1, characterized in that: A vibration motor (401) is fixedly connected to the middle of the front outer wall of the sieve box (4). A second sliding groove (402) is provided in the middle of both sides of the outer wall of the sieve box (4). A limit groove (403) is provided in the middle of the front and rear ends of the inner wall of the second sliding groove (402). A fixing frame (7) is fixedly connected to the middle of both sides of the upper surface of the base (1). A fixing plate (701) is fixedly connected to the outer wall of the upper adjacent sides of the fixing frame (7). A fixing block (702) is fixedly connected to the front and rear ends of the outer wall of the fixing plate (701). A damping rod (703) is fixedly connected to the inner bottom surface and inner top surface of the second sliding groove (402). The telescopic ends of (703) are fixedly connected to the upper and lower ends of the fixed plate (701). The damping rod (703) is fitted with a first return spring (704). The outer walls of the fixed plate (701) and the fixed block (702) are respectively slidably attached to the interior of the second sliding groove (402) and the limiting groove (403). The outer walls of the upper adjacent sides of the fixed frame (7) are slidably attached to the two sides of the outer wall of the sieve box (4). The upper and lower ends of the fixed block (702) are fixedly connected with a second return spring (705). The side of the second return spring (705) away from the center of the fixed plate (701) is fixedly connected to the inner wall of the limiting groove (403).

3. The vibrating screen for stable operation in building construction according to claim 1, characterized in that: The outer wall of the rear end of the screen box (4) is hinged to a top cover (8). The lower surface of the top cover (8) is in close contact with the upper surface of the screen box (4). A feed funnel (801) is connected through the middle of the upper surface of the top cover (8). The top cover (8) and the screen box (4) are fixed by a latch (9).

4. The vibrating screen for stable operation in building construction according to claim 1, characterized in that: A PLC control panel (102) is fixedly connected to the middle of the outer wall of the front end of the base (1), and brake casters (101) are fixedly connected to the four corners of the lower surface of the base (1). A battery panel (103) is provided inside the base (1).

5. A stable vibrating screen for construction according to claim 2, characterized in that: The side of the first reset spring (704) away from the center of the fixed plate (701) is fixedly connected to the inner bottom surface and the inner top surface of the second sliding groove (402), and the side of the first reset spring (704) near the center of the fixed plate (701) is fixedly connected to the upper end and the lower end of the fixed plate (701).

6. The vibrating screen for stable operation in building construction according to claim 1, characterized in that: The outer wall of the first sliding plate (301) is slidably attached to the inner wall of the first sliding groove (202), and the outer wall of the collection frame (3) is slidably attached to the inner wall of the first mounting groove (201).

7. A stable vibrating screen for construction according to claim 1, characterized in that: The sieve frame (5) and the four corners at the top of the sieve box (4) are all fixedly connected by fixing bolts.

8. A vibrating screen for stable operation in building construction according to claim 1, characterized in that: A handle (302) is fixedly connected to the middle of the front outer wall of the material collection frame (3). A rectangular groove (603) is opened in the middle of the front outer wall of the first screen plate (6) and the second screen plate (601). A handle (501) is fixedly connected to the middle of both sides of the upper surface of the screen box (4).

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