Demolition gravel crushing device for construction site

Abstract

The utility model provides a demolition broken stone crushing device for a construction site. The demolition broken stone crushing device comprises a support, a power box fixedly installed at the left end of the support, a spiral box fixedly installed in the middle of the support, a screen rotationally installed on the upper portion in the spiral box, and a baffle embedded in the right side in the spiral box. According to the demolition broken stone crushing device for the construction site, by arranging the structures such as the discharging opening, the screen, the spiral piece, the electric telescopic rod and the baffle, seamless connection of broken stone from crushing to screening is achieved through the discharging opening, flexible sliding of the baffle is matched, smooth discharging is ensured, and under the synergistic effect of a motor and a vibrator, the screen can be used for crushing broken stone; broken stones with different particle sizes are precisely separated, a spiral piece is driven by a motor to continuously and stably push qualified broken stones to a discharging opening, the conveying efficiency and stability are greatly improved, an electric telescopic rod endows a screen with the intelligent adjusting capacity, fine adjustment is conducted in time when the screening effect is poor, and the performance of the device is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of crushing device technology, and more specifically, to a crushing device for demolition gravel used on construction sites. Background Technology

[0002] In the construction industry, a large amount of rubble is often left behind after demolition work is completed. This rubble varies in size and shape, making transportation extremely inconvenient. When piled up on the spot, it seriously affects site clearing and subsequent construction. Therefore, crushing and processing it becomes an essential requirement.

[0003] However, existing crushed stone has the following problems when crushed:

[0004] Common methods of crushing stone are still relatively traditional, often relying on manual hammering to break up the stone piece by piece. This method is not only labor-intensive, but also difficult to ensure sufficient and consistent crushing due to uneven force applied by the operator. This results in uneven stone particle sizes, which cannot meet the requirements of some subsequent use scenarios with strict particle size requirements. At the same time, there are many safety hazards when using a hammer manually. During the swing of the hammer, workers are easily injured due to operational errors. When colliding with hard stone, the flying stone fragments may also cause injury. In addition, a large amount of dust is generated during the crushing process. In the relatively open and poorly ventilated environment of the construction site, the dust can easily spread. During long-term work, workers inevitably inhale a large amount of dust into their lungs, which seriously threatens their health and may lead to a series of occupational diseases such as pneumoconiosis.

[0005] This invention utilizes crushing rollers to break up stones, nozzles to reduce dust, a screen combined with a vibrator for screening, and a spiral conveyor. The discharge port, baffle, and electric telescopic rod work together to ensure material feeding, intelligently control screening, and improve the efficiency and quality of demolition stone processing. Utility Model Content

[0006] The present invention aims to solve the technical problems mentioned in the background art and provide a crushing device for demolition stones used on construction sites.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a crushing device for demolition and quarrying at construction sites, comprising: a support frame, a power box fixedly installed at the left end of the support frame, a spiral box fixedly installed in the middle of the support frame, a screen rotatably installed at the top inside the spiral box, a baffle embedded in the right side inside the spiral box, a crushing box fixedly installed at the top of the support frame, the power box installed at the left end of the crushing box, the spiral box installed below the crushing box, a discharge port opened at the top of the spiral box, a discharge port opened at the bottom right side of the spiral box, the upper end of the discharge port being fixedly connected to the bottom of the crushing box, the screen rotatably installed inside the discharge port, the baffle being slidably installed inside the discharge port, a moving groove opened at the right side inside the discharge port, a sliding groove opened in the middle of the moving groove, the sliding groove being located inside the inner wall of the discharge port, baffles being slidably installed at both the top and bottom of the sliding groove, and a compression spring fixedly installed at the bottom of the lower baffle, the compression spring being fixedly connected to the bottom of the sliding groove, a slot opened at one end of the baffle, the slot being movably connected to the screen.

[0008] A further preferred embodiment: a cover plate is installed on the upper hinge of the crushing box, a water tank is fixedly installed on the upper part of the cover plate, and a spray nozzle is fixedly installed on the bottom of the water tank.

[0009] A further preferred embodiment: the right end of the power box is rotatably connected to two crushing rollers, the surface of the crushing rollers is surrounded by a number of crushing teeth, and the crushing rollers are rotatably installed inside the crushing box.

[0010] A further preferred embodiment: a motor is fixedly installed on the upper right side of the spiral box, a drive wheel is fixedly installed on the output end of the motor, a driven wheel is fixedly installed below the drive wheel, and a transmission belt is installed between the drive wheel and the driven wheel.

[0011] A further preferred embodiment: a screw is rotatably mounted inside the screw box, a spiral blade is fixedly mounted on the surface of the screw, and one end of the screw is fixedly connected to the driven wheel.

[0012] A further preferred embodiment: A second motor is provided on the left side of the front of the screen. The second motor is fixedly installed on the surface of the spiral box, and its output end passes through the spiral box and is fixedly connected to the screen. The other end of the screen is rotatably connected to the feed port.

[0013] A further preferred embodiment: an extension block is fixedly installed at the right end of the screen, the extension block is slidably connected to the moving groove, the extension block is movably connected to the slot, an electric telescopic rod is fixedly installed below the extension block, and the output end of the electric telescopic rod is fixedly connected to the extension block.

[0014] Beneficial effects:

[0015] 1. Equipped with a feed inlet, screen, and electric telescopic rod, the feed inlet serves as a crucial channel connecting the crushing box and the screw conveyor, ensuring the orderly flow of crushed stone between different processes. Its specially designed moving trough and chute structure, combined with the sliding of the baffle, allows qualified crushed stone to fall smoothly while effectively preventing larger-diameter stones from clogging the screen. The screen rotates continuously under the drive of the motor, and combined with the high-frequency vibration of the bottom vibrator, it greatly improves screening efficiency and accuracy, enabling the rapid and accurate separation of crushed stone of different sizes. The electric telescopic rod provides a flexible adjustment method for screening operations. When the screen intercepts a large amount of larger-diameter stones, resulting in poor screening effect, the electric telescopic rod can push the extension block to fine-tune the position of the screen, optimizing the screening effect and ensuring stable and efficient operation of the device, thus improving the overall quality and efficiency of crushing operations for demolition at construction sites.

[0016] 2. By installing baffles, when the crushed stone enters the screw conveyor through the feed inlet, the screen screens it. The larger-diameter stones that are intercepted push the screen, and the screen interacts with the baffle groove, causing the baffle to slide in the chute. During this process, the baffle provides a certain passage space for the larger-diameter stones, preventing them from accumulating at the screen and blocking the feed inlet, thus ensuring the smooth feeding of the stone and maintaining the efficient operation of the entire device. On the other hand, the baffle can effectively prevent the stone from entering the moving chute, preventing the stone from accumulating in the moving chute and affecting its normal sliding, ensuring that it can flexibly respond to the screen action, ensuring the stability of the screening and feeding process, and extending the service life of the device.

[0017] 3. With the addition of spiral blades, once the qualified-sized crushed stone enters the lower part of the spiral box through the screen, the spiral blades begin to function. The motor on the upper right side of the spiral box drives the drive wheel, which in turn drives the driven wheel via the transmission belt. This causes the screw, which is fixedly connected to the driven wheel, to rotate, and the spiral blades rotate accordingly. This continuous and stable rotational motion continuously pushes the crushed stone along the spiral box toward the discharge port. This pushing method ensures the high efficiency and stability of the crushed stone conveying process, avoids the accumulation or blockage of crushed stone in the box, and greatly improves the overall working efficiency of the device. In addition, the structural design of the spiral blades enables the effective conveying of qualified crushed stone of different sizes, adapts to various working conditions, and effectively ensures the smooth output of crushed materials after demolition at construction sites.

[0018] 4. In summary, this type of construction site demolition stone crushing device, through its structure including a feed inlet, screen, spiral blades, electric telescopic rod, and baffle, achieves seamless connection between the crushing and screening stages. The special structure, combined with the flexible sliding of the baffle, ensures smooth feeding and eliminates the risk of blockage. The screen, under the coordinated action of the motor and vibrator, efficiently and accurately screens, precisely separating stones of different sizes. The spiral blades, driven by the motor, continuously and stably push qualified stones to the discharge port, greatly improving conveying efficiency and stability, adapting to various working conditions. The electric telescopic rod provides the screen with intelligent adjustment capabilities, allowing for timely fine-tuning when screening is ineffective, ensuring device performance. These complementary structures significantly improve the efficiency, quality, and automation level of construction site demolition stone crushing operations, effectively meeting the needs of actual engineering projects. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the planar structure of the feeding screw of this utility model.

[0021] Figure 3 This is a schematic diagram of the screen structure of this utility model.

[0022] Figure 4 This is a schematic diagram of the inner wall structure of the feed port of this utility model.

[0023] Figure 1-4 In the middle: 1. Support; 101. Crushing box; 102. Cover plate; 103. Water tank; 2. Power box; 201. Crushing roller; 202. Crushing teeth; 3. Spiral box; 301. Feed port; 302. Discharge port; 303. Motor 1; 304. Drive wheel; 305. Driven wheel; 306. Transmission belt; 307. Screw; 308. Spiral blade; 309. Moving groove; 310. Slide groove; 4. Screen; 401. Motor 2; 402. Extension block; 403. Electric telescopic rod; 5. Baffle; 501. Slot. Detailed Implementation

[0024] The following will refer to the appendix in the embodiments of this utility model. Figures 1-4 The technical solutions in the embodiments of this utility model will be clearly and completely described.

[0025] Please see Figure 1-4In this embodiment of the present invention, a demolition crushing device for construction sites includes: a support 1, a power box 2 fixedly installed at the left end of the support 1, a spiral box 3 fixedly installed in the middle of the support 1, a screen 4 rotatably installed inside the spiral box 3 at the top, a baffle 5 embedded in the right side of the spiral box 3, a crushing box 101 fixedly installed at the top of the support 1, the power box 2 installed at the left end of the crushing box 101, the spiral box 3 installed below the crushing box 101, a discharge port 301 opened at the top of the spiral box 3, a discharge port 302 opened at the bottom right side of the spiral box 3, the upper end of the discharge port 301 fixedly connected to the lower part of the crushing box 101, the screen 4 rotatably installed inside the discharge port 301, and the baffle 5 slidably installed inside the discharge port 301. A movable groove 309 is provided on the right side inside the 301. A sliding groove 310 is provided in the middle of the movable groove 309. The sliding groove 310 is located inside the inner wall of the discharge port 301. Baffles 5 are slidably installed at the top and bottom of the sliding groove 310. A compression spring is fixedly installed at the bottom of the lower baffle 5 and is fixedly connected to the bottom of the sliding groove 310. A slot 501 is provided at one end of the baffle 5 and is movably connected to the screen 4. A cover plate 102 is hinged at the upper end of the crushing box 101. A water tank 103 is fixedly installed at the upper end of the cover plate 102. A nozzle is fixedly installed at the bottom of the water tank 103. Two crushing rollers 201 are rotatably connected to the right end of the power box 2. Several crushing teeth 202 are installed around the surface of the crushing rollers 201. The crushing rollers 201 rotate... The rotating crushing roller 201 and its surface crushing teeth 202 are installed inside the crushing box 101. First, open the cover plate 102 at the top of the crushing box 101 and put the demolition crushed stone into the crushing box 101. The rotating crushing roller 201 and its surface crushing teeth 202 crush the crushed stone. At the same time, the nozzle at the bottom of the water tank 103 sprays water to suppress the dust generated during the crushing process. The crushed stone enters the spiral box 3 through the feed port 301. Inside the feed port 301, the rotating screen 4 screens the stone. At the same time, a vibrator is installed at the bottom of the screen 4 to vibrate the screen 4, which helps the screen 4 to screen better. The stone with the qualified particle size can pass through the screen 4 smoothly into the lower part of the spiral box 3, while the larger particle size stone is intercepted by the screen 4. When larger-diameter crushed stone is encountered, the crushed stone pushes the screen 4, causing it to change position. The screen 4 interacts with the groove 501 of the baffle 5, causing the baffle 5 to slide within the chute 310. The lower baffle 5 compresses the compression spring at the bottom, providing a certain passage space for larger-diameter crushed stone and preventing blockage of the discharge port 301. At the same time, the baffle 5 prevents the crushed stone from entering the moving chute 309, preventing the crushed stone from accumulating in the moving chute 309 and affecting the normal sliding of the baffle 5. This ensures that the baffle 5 can flexibly respond to the action of the screen 4. The crushed stone entering the lower part of the spiral box 3 is conveyed to the discharge port 302 through the spiral structure inside the spiral box 3. After all the crushed stone that needs to be crushed has been processed, the power box 2 is turned off, and the rotation of the crushing roller 201 is stopped.

[0026] In this embodiment of the present invention, a motor 303 is fixedly installed on the upper right side of the spiral box 3. A drive wheel 304 is fixedly installed at the output end of the motor 303, and a driven wheel 305 is fixedly installed below the drive wheel 304. A transmission belt 306 is installed between the drive wheel 304 and the driven wheel 305. A screw 307 is rotatably installed inside the spiral box 3, and a spiral blade 308 is fixedly installed on the surface of the screw 307. One end of the screw 307 is fixedly connected to the driven wheel 305. When the crushed stone enters the spiral box 3, the motor 303 is started. The output end of the motor 303 drives the drive wheel 304 to rotate. The drive wheel 304 drives the driven wheel 305 to rotate through the transmission belt 306, thereby causing the screw 307, which is fixedly connected to the driven wheel 305, to start rotating. Under the action of the screw 307 and the spiral blade 308, the crushed stone is conveyed to the discharge port 302. The spiral blade 308 continuously pushes the crushed stone to move along the spiral box 3, and finally discharges it from the discharge port 302.

[0027] In this embodiment of the invention, a second motor 401 is provided on the left side of the front of the screen 4. The second motor 401 is fixedly installed on the surface of the spiral box 3, and its output end passes through the spiral box 3 and is fixedly connected to the screen 4. The other end of the screen 4 is rotatably connected to the feed port 301. An extension block 402 is fixedly installed on the right end of the screen 4. The extension block 402 is slidably connected to the moving groove 309 and movably connected to the slot 501. An electric telescopic rod 403 is fixedly installed below the extension block 402. The output end of the electric telescopic rod 403 is fixedly connected to the extension block 402. When the screen 4 intercepts larger-diameter gravel... If the screening effect is not good, the electric telescopic rod 403 can be activated. The electric telescopic rod 403 extends or retracts, pushing the extension block 402 to slide in the moving groove 309, thereby driving the screen 4 to make a slight adjustment in position. The screen 4 interacts with the slot 501 of the baffle 5, causing the baffle 5 to slide in the sliding groove 310. The lower baffle 5 will compress the compression spring at the bottom, providing a certain passage space for larger-diameter crushed stone, avoiding clogging of the feed port 301. During this process, the baffle 5 effectively blocks crushed stone from entering the moving groove 309, preventing crushed stone from accumulating in the moving groove 309 and affecting the normal sliding of the baffle 5.

[0028] Working principle: Open the cover plate 102 at the top of the crushing box 101, and slowly and evenly put the demolition debris into the crushing box 101 to avoid overloading the equipment due to excessive feeding at one time. The rotating crushing roller 201 and its surface crushing teeth 202 powerfully crush the crushed stone, gradually breaking large-diameter demolition debris into smaller particles. At the same time, the nozzles at the bottom of the water tank 103 continuously spray water to form a fine water mist, which reduces dust generated during the crushing process and reduces dust pollution. The crushed stone enters the spiral box 3 through the feed port 301. Inside the feed port 301, the rotating screen 4 rotates stably under the drive of the motor 401, crushing the stone. During screening, the vibrator at the bottom of screen 4 works synchronously. Through high-frequency vibration, the crushed stones on the screen continuously jump and tumble, assisting screen 4 in better screening and improving screening efficiency and accuracy. Under the action of gravity and vibration, crushed stones of the correct size smoothly pass through screen 4 and enter the lower part of spiral box 3, while larger-sized crushed stones are intercepted by screen 4. When screen 4 intercepts larger-sized crushed stones, the crushed stones will push screen 4, causing it to change position. Screen 4 interacts with the groove 501 of baffle 5, causing baffle 5 to slide in slide groove 310. The lower baffle 5 will compress the compression spring at the bottom, providing some passage space for larger-sized crushed stones and avoiding clogging of the feed. At port 301, during this process, baffle 5 effectively blocks crushed stone from entering the moving trough 309, preventing crushed stone from accumulating in the moving trough 309 and affecting the normal sliding of baffle 5, thereby ensuring that baffle 5 can flexibly respond to the action of screen 4. If screen 4 intercepts a large amount of larger-diameter crushed stone, resulting in poor screening effect, electric telescopic rod 403 can be activated. Electric telescopic rod 403 extends or retracts, pushing extension block 402 to slide in moving trough 309, thereby driving screen 4 to finely adjust position and optimize screening effect. Crushed stone entering the lower part of spiral box 3 is conveyed to discharge port 302 under the action of rotating screw 307 and spiral blade 308. Motor 303 is started. The output end 03 drives the drive wheel 304 to rotate, and the drive wheel 304 drives the driven wheel 305 to rotate through the transmission belt 306, so that the screw 307 rotates continuously. The spiral blades 308 continuously push the crushed stone along the spiral box 3 and finally discharge it from the discharge port 302, completing the entire crushing, screening and conveying process. After all the crushed stone that needs to be crushed has been processed, first turn off the motor 2 401 to stop the rotation of the screen 4, and at the same time turn off the vibrator at the bottom of the screen 4. Then turn off the motor 1 303 to stop the rotation of the screw 307 and the spiral blades 308. Finally, turn off the power box 2 to stop the rotation of the crushing roller 201. At the same time, retract the electric telescopic rod 403 to the initial position.

Claims

1. A crushing device for demolition rubble at construction sites, comprising: A support (1) is provided, a power box (2) is fixedly installed at the left end of the support (1), a spiral box (3) is fixedly installed in the middle of the support (1), a screen (4) is rotatably installed inside the spiral box (3), and a baffle (5) is embedded in the right side of the spiral box (3). The support (1) is characterized by a crushing box (101) fixedly installed at the upper end, the power box (2) installed at the left end of the crushing box (101), the spiral box (3) installed below the crushing box (101), a discharge port (301) opening at the upper end of the spiral box (3), and a discharge port (302) opening at the bottom right side of the spiral box (3). The upper end of the discharge port (301) is connected to the lower end of the crushing box (101). The screen (4) is rotatably installed in the feed inlet (301), and the baffle (5) is embedded and slidably installed inside the feed inlet (301). A moving groove (309) is provided on the right side inside the feed inlet (301), and a sliding groove (310) is provided in the middle of the moving groove (309). The sliding groove (310) is located inside the inner wall of the feed inlet (301). Baffles (5) are slidably installed on both the upper and lower sides inside the sliding groove (310), and a compression spring is fixedly installed at the bottom of the lower baffle (5). The compression spring is fixedly connected to the bottom of the sliding groove (310). A slot (501) is provided at one end of the baffle (5), and the slot (501) is movably connected to the screen (4).

2. The demolition crushing device for construction sites according to claim 1, characterized in that: The upper hinge of the crushing box (101) is fitted with a cover plate (102), and a water tank (103) is fixedly installed on the upper end of the cover plate (102). A nozzle is fixedly installed at the bottom of the water tank (103).

3. The demolition crushing device for construction sites according to claim 1, characterized in that: The power box (2) is rotatably connected to two crushing rollers (201) on its right end. Several crushing teeth (202) are installed around the surface of the crushing rollers (201). The crushing rollers (201) are rotatably installed inside the crushing box (101).

4. The demolition crushing device for construction sites according to claim 1, characterized in that: A motor (303) is fixedly installed on the upper right side of the spiral box (3). A drive wheel (304) is fixedly installed at the output end of the motor (303). A driven wheel (305) is fixedly installed below the drive wheel (304). A transmission belt (306) is installed between the drive wheel (304) and the driven wheel (305).

5. A demolition stone crushing device for construction sites according to claim 4, characterized in that: The screw box (3) is rotatably mounted inside, and a spiral blade (308) is fixedly mounted on the surface of the screw (307). One end of the screw (307) is fixedly connected to the driven wheel (305).

6. The demolition crushing device for construction sites according to claim 1, characterized in that: A second motor (401) is provided on the left side of the front of the screen (4). The second motor (401) is fixedly installed on the surface of the spiral box (3). Its output end passes through the spiral box (3) and is fixedly connected to the screen (4). The other end of the screen (4) is rotatably connected to the discharge port (301).

7. A demolition crushing device for construction sites according to claim 6, characterized in that: An extension block (402) is fixedly installed on the right end of the screen (4). The extension block (402) is slidably connected to the moving groove (309). The extension block (402) is movably connected to the slot (501). An electric telescopic rod (403) is fixedly installed below the extension block (402). The output end of the electric telescopic rod (403) is fixedly connected to the extension block (402).

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