Filling raw material crushing equipment for pile foundation construction

Abstract

The filling raw material crushing equipment for pile foundation construction comprises a base, the outer wall of the top of the base is fixedly connected with a crushing device, the outer wall of the top of the base is fixedly connected with a conveying structure, and the outer wall of the side face of the crushing device is fixedly connected with the outer wall of the conveying structure; the invention relates to the technical field of crushing. According to the crushing device and the conveying device, by arranging a combined unit splicing structure, abraded crushing teeth or single combined units can be flexibly disassembled and replaced, meanwhile, the interior of equipment can be conveniently cleaned, raised dust can be prevented from overflowing during feeding by arranging a covering plate, the connecting part of the conveying structure is well sealed, and construction raised dust pollution is reduced; the guide scraper can prevent the raw materials from being attached to the inner wall of the crushing box or the surfaces of the crushing teeth, the situation that the crushing efficiency is affected by accumulated materials is prevented, and the filling raw materials can be continuously crushed to the particle size meeting the pile foundation construction requirement by arranging the closed-loop process of crushing, screening and backflow re-crushing in cooperation with classified screening of the vibration screen plate.

Description

Technical Field

[0001] This invention relates to the field of crushing technology, specifically to a crushing device for backfill materials in pile foundation construction. Background Technology

[0002] During pile foundation construction, the particle size distribution of the fill material directly affects the compaction of the fill and the overall bearing stability of the pile foundation. Therefore, it is necessary to crush the fill material to ensure that its particle size meets the requirements of the construction specifications. Currently, fill material crushing equipment on the market generally has some shortcomings.

[0003] Existing crushing equipment mostly adopts a single crushing process and lacks a closed-loop design of "crushing, screening to recirculation". It is difficult to uniformly refine the raw material particles to the standard particle size through a single crushing. Moreover, the screening process is mostly single-stage filtration, and large pieces of raw material can easily be directly mixed into the subsequent construction process, resulting in insufficient compaction of the backfill soil. This affects the quality of pile foundation construction and structural stability, and increases the potential risks in later projects. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of the prior art by providing a soil compaction device for pile foundation construction, thereby solving the problem of insufficient soil compaction affecting the quality and structural stability of pile foundation construction.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A soil filling material crushing device for pile foundation construction includes: a base, a crushing device fixedly connected to the outer wall of the top of the base, a conveying structure fixedly connected to the outer wall of the top of the base, and the outer wall of the side of the crushing device fixedly connected to the outer wall of the conveying structure; the crushing device includes a crushing box, a drive shaft symmetrically rotatably connected to the inner wall of the crushing box, and the drive shaft is connected to an external drive device; a first semi-arc block is slidably connected to the outer wall of the drive shaft, a second semi-arc block is slidably connected to the outer wall of the drive shaft, crushing teeth are fixedly connected to the outer walls of the first and second semi-arc blocks, and bolts are threadedly connected to the inner wall of the first semi-arc block.

[0006] Preferably, the inner wall of the first semi-arc block and the outer wall of the second semi-arc block engage with each other, the outer wall of the bolt is slidably connected to the inner wall of the second semi-arc block, the first and second semi-arc blocks are arranged laterally along the outer wall of the drive shaft, the outer wall of the bottom of the crushing box is fixedly connected to the outer wall of the top of the base, and a complete arc block is formed by the engagement of the first and second semi-arc blocks. The combined unit is fixed to the outer wall of the drive shaft by bolts passing through the inner walls of the first and second semi-arc blocks. Multiple combined units are arranged laterally along the drive shaft, and the crushing teeth on their outer walls together constitute a crushing roller for crushing soil blocks. This assembly method allows for flexible disassembly, facilitating the subsequent replacement and cleaning of worn crushing teeth or combined units.

[0007] Preferably, the inner wall of the crushing box is rotatably connected to a rotating shaft, and the rotating shaft is connected to an external driving device. A cam is symmetrically fixedly connected to the outer wall of the rotating shaft. A limit plate is symmetrically fixedly connected to the inner wall of the crushing box. A screen plate is slidably connected to the inner wall of the crushing box. A connecting block is symmetrically fixedly connected to the outer wall of the bottom of the screen plate. A guide rod is symmetrically fixedly connected to the outer wall of the bottom of the connecting block. A compression spring is symmetrically fixedly connected to the outer wall of the bottom of the connecting block.

[0008] Preferably, the compression spring is disposed outside the guide rod, the outer wall of the guide rod is slidably connected to the inner wall of the limiting plate, the outer wall of the top of the limiting plate is fixedly connected to the outer wall of the compression spring on the side away from the connecting block, the screen plate is disposed below the drive shaft, the outer wall of the cam is slidably connected to the outer wall of the bottom of the connecting block, the shaft drives the symmetrically arranged cams to rotate, during the rotation of the cams periodically squeeze the bottom of the connecting block, pushing the screen plate to move upward, after the cams disengage from the connecting block, the elastic restoring force of the compression spring drives the screen plate to reset downward, forming continuous up and down vibration.

[0009] Preferably, the outer wall of the side of the crushing box is provided with a screening port, the outer wall of the bottom of the crushing box is provided with a discharge port, the inner wall of the top of the crushing box is symmetrically and fixedly connected with guide scrapers, the outer wall of the top of the crushing box is rotatably connected with a cover plate through a hinge, and the outer wall of the top of the cover plate is fixedly connected with a discharge hopper.

[0010] Preferably, the inner wall of the guide scraper is slidably connected to the outer wall of the crushing teeth, the screening port is located on one side of the screen plate, and the discharge port is located below the screen plate. The guide scraper at the top of the crushing box guides the raw material to fall accurately into the crushing area between the two drive shafts, while also preventing the raw material from adhering to the inner wall of the crushing box or the surface of the crushing teeth.

[0011] Preferably, the conveying structure includes a conveying cylinder, a spiral rod is rotatably connected to the inner wall of the conveying cylinder, a feed inlet is opened on the outer wall at the bottom of the conveying cylinder, a discharge outlet is opened on the outer wall at the top of the conveying cylinder, and a feed guide plate and a discharge guide plate are fixedly connected to the outer wall on the side of the conveying cylinder.

[0012] Preferably, the feed guide plate is located outside the feed inlet, the discharge guide plate is located outside the discharge inlet, the outer wall of the bottom of the discharge guide plate is fixedly connected to the outer wall of the top of the crushing box, and the discharge guide plate is located above the drive shaft. The outer wall of the feed guide plate on the side away from the feed inlet is fixedly connected to the outer wall of the side of the crushing box, and the feed guide plate is located outside the screening inlet. The rotating screw in the conveying cylinder transports large soil particles from the feed inlet upward along the inner wall of the conveying cylinder, and finally discharges them from the top discharge outlet. Then, the discharge guide plate guides them to the top of the crushing roller in the crushing box, where they re-enter the crushing process.

[0013] This invention provides a soil crushing device for pile foundation construction. It has the following beneficial effects: (i) The crushing device, by setting up a closed-loop process of "crushing, screening, and re-crushing", combined with the graded screening of the vibrating screen plate, can continuously crush the fill material to the particle size that meets the requirements of pile foundation construction, avoid the mixing of large pieces of material, and ensure the compactness of the fill and the stability of the pile foundation construction.

[0014] (ii) The drive shaft, by setting up a modular splicing structure, allows for flexible disassembly and replacement of worn crushing teeth or individual modular units without the need to replace the entire crushing roller. It also facilitates internal cleaning of the equipment, reducing maintenance time and parts wear costs.

[0015] (III) The crushing box is equipped with a cover plate to prevent dust from overflowing during feeding. The connection parts of the conveying structure are well sealed, reducing construction dust pollution. The guide scraper can prevent raw materials from adhering to the inner wall of the crushing box or the surface of the crushing teeth, preventing material accumulation from affecting the crushing efficiency and ensuring the continuous and stable operation of the equipment.

[0016] (iv) The crushing tooth, by setting the first half-arc block and the second half-arc block, can flexibly adjust the combination of crushing rollers or replace the corresponding crushing tooth according to the hardness and particle size requirements of the fill material, adapt to the fill treatment needs of pile foundation construction under different geological conditions, and improve the versatility and construction flexibility of the equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a schematic diagram of the crushing device of the present invention; Figure 4 This is a schematic diagram of the crushing box of the present invention; Figure 5 For the present invention Figure 4 A schematic diagram of the structure at point A; Figure 6 This is a schematic diagram of the structure of the crushing tooth of the present invention; Figure 7 This is a schematic diagram of the conveying structure of the present invention.

[0018] In the diagram: 1. Base; 2. Crushing device; 21. Crushing box; 211. Screening port; 212. Feed port; 213. Guide scraper; 214. Cover plate; 215. Feed hopper; 22. Drive shaft; 23. First semi-arc block; 24. Second semi-arc block; 25. Crushing teeth; 26. Bolt; 27. Rotating shaft; 271. Cam; 28. Limiting plate; 29. ​​Screen plate; 291. Connecting block; 292. Guide rod; 293. Compression spring; 3. Conveying structure; 31. Conveying cylinder; 32. Screw rod; 33. Feed port; 34. Discharge port; 35. Feed guide plate; 36. Discharge guide plate. Detailed Implementation

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

[0020] Please see Figures 1-7 This invention provides a technical solution: a soil filling material crushing device for pile foundation construction, comprising: a base 1, a crushing device 2 fixedly connected to the outer wall of the top of the base 1, a conveying structure 3 fixedly connected to the outer wall of the top of the base 1, and the outer wall of the side of the crushing device 2 fixedly connected to the outer wall of the conveying structure 3; the crushing device 2 includes a crushing box 21, a drive shaft 22 symmetrically rotatably connected to the inner wall of the crushing box 21, and the drive shaft 22 is connected to an external drive device, a first semi-arc block 23 slidably connected to the outer wall of the drive shaft 22, a second semi-arc block 24 slidably connected to the outer wall of the drive shaft 22, crushing teeth 25 fixedly connected to the outer walls of the first semi-arc block 23 and the second semi-arc block 24, and bolts 26 threadedly connected to the inner wall of the first semi-arc block 23.

[0021] The inner wall of the first semi-arc block 23 and the outer wall of the second semi-arc block 24 engage with each other. The outer wall of the bolt 26 is slidably connected to the inner wall of the second semi-arc block 24. The first semi-arc block 23 and the second semi-arc block 24 are arranged laterally along the outer wall of the drive shaft 22. The outer wall of the bottom of the crushing box 21 is fixedly connected to the outer wall of the top of the base 1. The first semi-arc block 23 and the second semi-arc block 24 engage with each other to form a complete arc block. The bolt 26 passes through the inner walls of the first semi-arc block 23 and the second semi-arc block 24 to fix the combined unit to the outer wall of the drive shaft 22. Multiple combined units are arranged laterally along the drive shaft 22. The crushing teeth 25 on their outer walls together constitute a crushing roller for crushing soil blocks. This assembly method can be flexibly disassembled, which is convenient for subsequent replacement and cleaning of worn crushing teeth 25 or combined units.

[0022] The inner wall of the crushing box 21 is rotatably connected to a rotating shaft 27, which is connected to an external drive device. A cam 271 is symmetrically fixedly connected to the outer wall of the rotating shaft 27. A limit plate 28 is symmetrically fixedly connected to the inner wall of the crushing box 21. A screen plate 29 is slidably connected to the inner wall of the crushing box 21. A connecting block 291 is symmetrically fixedly connected to the outer wall of the bottom of the screen plate 29. A guide rod 292 is symmetrically fixedly connected to the outer wall of the bottom of the connecting block 291. A compression spring 293 is symmetrically fixedly connected to the outer wall of the bottom of the connecting block 291.

[0023] Compression spring 293 is set outside guide rod 292. The outer wall of guide rod 292 is slidably connected to the inner wall of limiting plate 28. The outer wall of the top of limiting plate 28 is fixedly connected to the outer wall of compression spring 293 on the side away from connecting block 291. Screen plate 29 is set below drive shaft 22. The outer wall of cam 271 is slidably connected to the outer wall of bottom of connecting block 291. Shaft 27 drives symmetrically arranged cam 271 to rotate. During the rotation of cam 271, it periodically squeezes the bottom of connecting block 291, pushing screen plate 29 to move upward. After cam 271 disengages from connecting block 291, the elastic restoring force of compression spring 293 drives screen plate 29 to return downward, forming continuous up and down vibration.

[0024] The crushing box 21 has a screening port 211 on the outer side wall, a discharge port 212 on the outer bottom wall, a guide scraper 213 symmetrically fixedly connected to the inner wall of the top of the crushing box 21, a cover plate 214 rotatably connected to the outer wall of the top of the crushing box 21 via a hinge, and a discharge hopper 215 fixedly connected to the outer wall of the top of the cover plate 214.

[0025] The inner wall of the guide scraper 213 is slidably connected to the outer wall of the crushing tooth 25. The screening port 211 is located on one side of the screen plate 29, and the discharge port 212 is located below the screen plate 29. The guide scraper 213 on the top of the crushing box 21 guides the raw material to fall accurately into the crushing area between the two drive shafts 22, while also preventing the raw material from adhering to the inner wall of the crushing box 21 or the surface of the crushing tooth 25.

[0026] The conveying structure 3 includes a conveying cylinder 31, a screw rod 32 is rotatably connected to the inner wall of the conveying cylinder 31, a feed inlet 33 is opened on the outer wall at the bottom of the conveying cylinder 31, a discharge outlet 34 is opened on the outer wall at the top of the conveying cylinder 31, and a feed guide plate 35 and a discharge guide plate 36 are fixedly connected to the outer wall on the side of the conveying cylinder 31.

[0027] The feed guide plate 35 is located outside the feed inlet 33, and the discharge guide plate 36 is located outside the discharge outlet 34. The outer wall of the bottom of the discharge guide plate 36 is fixedly connected to the outer wall of the top of the crushing box 21, and the discharge guide plate 36 is located above the drive shaft 22. The outer wall of the feed guide plate 35 on the side away from the feed inlet 33 is fixedly connected to the outer wall of the side of the crushing box 21, and the feed guide plate 35 is located outside the screening port 211. The screw rod 32 inside the conveying cylinder 31 rotates, conveying the large soil particles at the feed inlet 33 upward along the inner wall of the conveying cylinder 31, and finally discharged from the top discharge outlet 34. Then, it is guided by the discharge guide plate 36 to the top of the crushing roller inside the crushing box 21 and re-enters the crushing process.

[0028] When in use, the soil clods are poured into the hopper 215 on the crushing device 2 and enter the crushing device 2 for crushing. The qualified soil flows out from the discharge port 212 through the screen plate 29, and the unqualified soil flows through the screening port 211 and re-enters the crushing box 21 through the conveying structure 3 for crushing. The crushing roller of the crushing device 2 is composed of multiple combined units. Each combined unit is interlocked with the first semi-arc block 23 and the second semi-arc block 24 to form a complete arc block. The combined unit is fixed to the outer wall of the drive shaft 22 by bolts 26 passing through the inner walls of the first semi-arc block 23 and the second semi-arc block 24. Multiple combined units are arranged laterally along the drive shaft 22. The crushing teeth 25 on their outer walls together constitute the crushing roller for crushing soil blocks. This assembly method can be flexibly disassembled, which is convenient for subsequent replacement and cleaning of worn crushing teeth 25 or combined units. Before the equipment is started, it is necessary to ensure that the cover plate 214 is closed, the hopper 215 is in the feeding state, and the connection between the conveying structure 3 and the crushing box 21 is well sealed. The backfill material for pile foundation construction is fed into the crushing box 21 through the hopper 215. The cover plate 214 can prevent dust from overflowing during the feeding process. When the material falls, the guide scraper 213 at the top of the crushing box 21 guides the material to fall accurately into the crushing area between the two drive shafts 22. At the same time, it also prevents the material from adhering to the inner wall of the crushing box 21 or the surface of the crushing teeth 25. The drive shaft 22 drives the crushing roller to rotate at high speed. The two sets of crushing rollers rotate relative to each other. Through the impact and squeezing action of the crushing teeth 25 and the material, the large pieces of backfill material are crushed into smaller particles. After initial crushing, the raw material falls onto the screen plate 29 below. The screen plate 29 is slidably connected to the limiting plate 28 on the inner wall of the crushing box 21 through the connecting block 291 and the guide rod 292. The compression spring 293 between the connecting block 291 and the limiting plate 28 is sleeved on the outside of the guide rod 292. At the same time, the rotating shaft 27 drives the symmetrically arranged cam 271 to rotate. During the rotation of the cam 271, it periodically squeezes the bottom of the connecting block 291, pushing the screen plate 29 to move upward. After the cam 271 disengages from the connecting block 291, the elastic restoring force of the compression spring 293 drives the screen plate 29 to return to its original position downward, forming continuous up and down vibration. Under the action of vibration, fine soil particles that meet the requirements of the fill particle size for pile foundation construction pass through the mesh of the screen plate 29, fall into the bottom of the crushing box 21, and are discharged through the discharge port 212 for subsequent pile foundation construction. Larger soil particles that do not meet the particle size requirements move to one side under the vibration of the screen plate 29 and are discharged through the screening port 211 on the side of the crushing box 21. The discharged large soil particles are guided by the feed guide plate 35 connected to the screening port 211 and fall precisely into the feed port 33 of the conveying cylinder 31. The spiral rod 32 inside the conveying cylinder 31 rotates and conveys the large soil particles at the feed port 33 upward along the inner wall of the conveying cylinder 31. Finally, they are discharged from the discharge port 34 at the top and then guided by the discharge guide plate 36 to the top of the crushing roller in the crushing box 21 to re-enter the crushing process. The aforementioned process of "crushing, screening, and re-crushing" continues until all fill material is crushed to the required particle size and stably discharged from the discharge port 212, completing the entire fill material crushing process. During this process, the guide scraper 213 continuously cleans the soil clods adhering to the surface of the crushing teeth 25 to prevent the crushing teeth 25 from being affected by material accumulation; the detachable crushing structure allows for flexible adjustment of the crushing roller combination or replacement of the crushing teeth 25 according to the hardness of the raw material or crushing requirements, improving the equipment's adaptability.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A backfill material crushing device for pile foundation construction, comprising: A base (1) is provided with a crushing device (2) fixedly connected to the outer wall of the top of the base (1). The base (1) is characterized in that a conveying structure (3) is fixedly connected to the outer wall of the top of the base (1), and the outer wall of the side of the crushing device (2) is fixedly connected to the outer wall of the conveying structure (3). The crushing device (2) includes a crushing box (21), a drive shaft (22) is symmetrically rotatably connected to the inner wall of the crushing box (21), a first semi-arc block (23) is slidably connected to the outer wall of the drive shaft (22), a second semi-arc block (24) is slidably connected to the outer wall of the drive shaft (22), crushing teeth (25) are fixedly connected to the outer walls of the first semi-arc block (23) and the second semi-arc block (24), and bolts (26) are threadedly connected to the inner wall of the first semi-arc block (23).

2. The backfill material crushing equipment for pile foundation construction according to claim 1, characterized in that: The inner wall of the first semi-circular block (23) and the outer wall of the second semi-circular block (24) are engaged with each other. The outer wall of the bolt (26) is slidably connected to the inner wall of the second semi-circular block (24). The first semi-circular block (23) and the second semi-circular block (24) are arranged laterally along the outer wall of the drive shaft (22). The outer wall of the bottom of the crushing box (21) is fixedly connected to the outer wall of the top of the base (1).

3. The backfill material crushing equipment for pile foundation construction according to claim 1, characterized in that: The inner wall of the crushing box (21) is rotatably connected to a rotating shaft (27), and the outer wall of the rotating shaft (27) is symmetrically fixedly connected to a cam (271). The inner wall of the crushing box (21) is symmetrically fixedly connected to a limiting plate (28), and the inner wall of the crushing box (21) is slidably connected to a screen plate (29). The outer wall of the bottom of the screen plate (29) is symmetrically fixedly connected to a connecting block (291), the outer wall of the bottom of the connecting block (291) is symmetrically fixedly connected to a guide rod (292), and the outer wall of the bottom of the connecting block (291) is symmetrically fixedly connected to a compression spring (293).

4. The backfill material crushing equipment for pile foundation construction according to claim 3, characterized in that: The compression spring (293) is disposed outside the guide rod (292). The outer wall of the guide rod (292) is slidably connected to the inner wall of the limiting plate (28). The outer wall of the top of the limiting plate (28) is fixedly connected to the outer wall of the compression spring (293) on the side away from the connecting block (291). The screen plate (29) is disposed below the drive shaft (22). The outer wall of the cam (271) is slidably connected to the outer wall of the bottom of the connecting block (291).

5. The backfill material crushing equipment for pile foundation construction according to claim 1, characterized in that: The crushing box (21) has a screening port (211) on the outer side wall, and a discharge port (212) on the outer bottom wall. The inner wall of the top of the crushing box (21) is symmetrically fixedly connected with guide scrapers (213). The outer wall of the top of the crushing box (21) is rotatably connected with a cover plate (214) via a hinge. The outer wall of the top of the cover plate (214) is fixedly connected with a discharge hopper (215).

6. The backfill material crushing equipment for pile foundation construction according to claim 5, characterized in that: The inner wall of the guide scraper (213) is slidably connected to the outer wall of the crushing tooth (25), the screening port (211) is located on one side of the screen plate (29), and the discharge port (212) is located below the screen plate (29).

7. The backfill material crushing equipment for pile foundation construction according to claim 1, characterized in that: The conveying structure (3) includes a conveying cylinder (31), a spiral rod (32) is rotatably connected to the inner wall of the conveying cylinder (31), an inlet (33) is opened on the outer wall at the bottom of the conveying cylinder (31), an outlet (34) is opened on the outer wall at the top of the conveying cylinder (31), and an inlet guide plate (35) and an outlet guide plate (36) are fixedly connected to the outer wall on the side of the conveying cylinder (31).

8. The backfill material crushing equipment for pile foundation construction according to claim 7, characterized in that: The feed guide plate (35) is located outside the feed inlet (33), the discharge guide plate (36) is located outside the discharge inlet (34), the outer wall of the bottom of the discharge guide plate (36) is fixedly connected to the outer wall of the top of the crushing box (21), and the discharge guide plate (36) is located above the drive shaft (22). The outer wall of the feed guide plate (35) on the side away from the feed inlet (33) is fixedly connected to the outer wall of the side of the crushing box (21), and the feed guide plate (35) is located outside the screening port (211).

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