Pouring construction method for pipe jacking construction working well

Abstract

The invention relates to the technical field of concrete construction, and discloses a pouring construction method for a pipe jacking construction working well, which comprises a bottom plate, a motor is arranged in the middle of the upper surface of the bottom plate, a threaded rod is fixedly arranged at the output end of the motor, and a plurality of fixing rods are in threaded connection with the bottom end of the outer wall of the threaded rod. A scraping block is arranged at one end of the fixing rod, a first spring is arranged on the upper surface of the fixing rod, a buffer block is arranged at the top end of the first spring, a rotating shaft is arranged at one end of the buffer block, and supporting blocks are rotationally connected to the two ends of the rotating shaft. Concrete segregation is avoided through cooperation of the buffer blocks and the springs, and the pouring quality and structural strength of the working well are improved; after pouring, the motor drives the scraping block to clean the groove dividing barrel, manual cleaning difficulty is lowered, and the service life of the device is prolonged; and a stable structure and a buffering and cleaning mechanism reduce potential safety hazards and guarantee the safety of personnel and equipment. The problems of concrete segregation and difficult device cleaning are solved.

Description

Technical Field

[0001] The invention relates to the technical field of concrete construction, in particular to a pouring construction method for a pipe jacking construction working well. Background Art

[0002] In modern urban infrastructure construction, pipe jacking technology, due to its trenchless nature, is widely used in projects such as underground pipeline laying. As a key component of pipe jacking construction, the pouring quality of the pipe jacking work pit directly affects the stability and safety of the entire pipe jacking project.

[0003] Traditional pipe jacking construction pit casting equipment presents numerous problems. During the concrete pouring process, due to a lack of effective buffering measures, the high impact force of concrete falling from a height can easily cause concrete segregation, making it difficult to guarantee concrete performance and, in turn, affecting the structural strength and quality of the pit. For example, in some high-drop casting scenarios, the impact of the concrete during the fall can cause the aggregate and cement slurry to separate, resulting in localized strength deficiencies in the pit after pouring.

[0004] Cleaning traditional systems after pouring is difficult. Concrete residue on the inner walls of components like the trough is difficult to remove. If not cleaned promptly, the remaining concrete solidifies, affecting the quality of the next pour and the proper functioning of the system. Furthermore, manual cleaning is not only time-consuming and labor-intensive, but can also cause damage to the system. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a pouring construction method for a pipe jacking construction working well, which solves the problems of concrete segregation and difficulty in cleaning the device during the pouring process of the pipe jacking construction working well.

[0006] To achieve the above objectives, the present invention implements a casting device for a jacking pipe construction working pit through the following technical scheme, including a base plate, a motor is provided in the middle of the upper surface of the base plate, a threaded rod is fixedly provided at the output end of the motor, a plurality of fixed rods are threadedly connected to the bottom end of the outer wall of the threaded rod, a scraper is provided at one end of the fixed rod, a spring is provided on the upper surface of the fixed rod, a buffer block is provided at the top of the spring, a rotating shaft is provided at one end of the buffer block, support blocks are rotatably connected to both ends of the rotating shaft, the middle part of the support block is threadedly connected to the outer wall of the threaded rod, and a guide hopper is provided around the support block.

[0007] By adopting the above technical solution, in terms of device maintenance, after pouring is completed, the motor drives the scraper to clean the residual concrete on the inner wall of the trough barrel, reducing the difficulty of cleaning and extending the service life of the device; in terms of buffer design, the buffer block cooperates with the spring to effectively reduce the impact force of the falling concrete, avoid concrete segregation, and ensure its performance.

[0008] Preferably, one side of the scraper block is arranged on the inner wall of the trough barrel, the bottom end of the trough barrel is arranged on the upper surface of the bottom plate, the outer wall of the trough barrel is provided with a plurality of discharge holes, and the discharge holes of the trough barrel are provided with slide grooves.

[0009] Preferably, a fixing block 1 is symmetrically provided on the outer wall of the divided tank barrel, an anchor rod is provided on the upper surface of the fixing block 1, a fixing block 2 is provided on the top of the anchor rod, and a buffer chute is provided at one end of the fixing block 2.

[0010] Preferably, the inner wall of the buffer chute is provided with a plurality of buffer inclined plates, the bottom end of the buffer chute is provided with a buffer funnel, the bottom end of the buffer funnel is provided above the bottom plate, and the bottom end of the bottom plate is provided with a buffer mechanism.

[0011] Preferably, the buffer mechanism includes several buffer rods 1, the top end of the buffer rod 1 is arranged on the lower surface of the base plate, the outer wall of the buffer rod 1 is slidably connected to the buffer rod 2, the bottom end of the buffer rod 2 is provided with a buffer base, and the interior of the buffer rod 1 is provided with a cavity.

[0012] Preferably, a spring 2 is provided at the bottom end of the buffer rod 1, and the bottom end of the spring 2 is provided at the bottom end of the inner wall of the buffer rod 2. A damper is provided in the middle of the spring 2, and the bottom end of the damper is provided at the inner bottom end of the buffer rod 2. The outer wall of the damper is slidably connected in the cavity of the buffer rod 1.

[0013] A pouring construction method for a pipe jacking construction working well, used for a pouring device for a pipe jacking construction working well, the method comprising the following steps: S1. Preparation: Check the status of the bottom plate and each component to ensure that the trough barrel and the discharge hole are unobstructed; S2. Material distribution: Pour concrete into the buffer block and let it fall on the surface. When the weight of the concrete reaches a certain level, the buffer block will press down and the concrete will slide along its surface. S3. Buffering effect: When concrete flows, the buffer block will alleviate the impact of falling by swinging. After being pressed down, the spring will return to its original position and lift the buffer block again. S4. Anti-vibration measures: When concrete falls from a height of more than 5 meters, the buffer mechanism under the bottom plate absorbs the vertical impact force through buffer rods 1 and 2; S5. End of construction: After shutdown, check the equipment to ensure there are no abnormalities, tidy up the pouring area, and perform equipment maintenance.

[0014] Preferably, the S5 further includes equipment cleaning: after the concrete pouring is completed, the motor is started, and the threaded rod is raised and lowered so that the scraping block scrapes away the residual concrete on the inner wall of the trough barrel.

[0015] Preferably, the step S5 further includes a condition inspection: observing whether cracks appear on the concrete surface, and promptly discovering and treating surface cracks.

[0016] Preferably, the S5 also includes strength testing: after the prescribed curing period, sampling is performed and the compressive strength of the concrete is tested to ensure that it reaches the designed strength.

[0017] The present invention provides a pouring construction method for a pipe jacking construction working well, which has the following beneficial effects: 1. This invention uses a buffer block and spring to prevent concrete segregation, improving the pouring quality and structural strength of the working pit. After pouring, a motor drives a scraper to clean the trough, reducing the difficulty of manual cleaning and extending the life of the device. The stable structure and buffer and cleaning mechanisms reduce safety hazards and ensure the safety of personnel and equipment. This solves the problems of concrete segregation and the difficulty of cleaning the device.

[0018] 2. In this invention, the chute guides and buffers concrete during the pouring process in the working pit of pipe jacking construction, allowing concrete to flow into the working pit along a predetermined path and at a predetermined speed, preventing splashing and spraying during discharge, reducing concrete waste and pollution to the construction environment. This also ensures a smoother concrete flow, reducing the risk of deformation and displacement of the working pit formwork due to impact, ensuring pouring quality and construction safety, and effectively resolving the splashing and spraying issues caused by excessive concrete discharge velocity.

[0019] 3. In this invention, the buffer sloping plate in the buffer chute slows the concrete's fall, preventing segregation and ensuring quality, helping to improve the quality of the working pit pouring. At the same time, the anchor rods and fixed blocks work together to enhance the stability of the connection between the buffer chute and the trough bucket, ensuring reliable concrete delivery. This effectively solves the problem of segregation and equipment damage caused by the high impact force of concrete during pipe jacking construction.

[0020] 4. In the present invention, the buffer rod 1, the buffer rod 2, the spring 2 and the damper work together to greatly reduce the vibration amplitude during the construction of the device, reduce the loosening and wear of components, extend the life of the device, ensure the uniformity and density of concrete pouring, improve the pouring quality and structural strength of the working well, reduce the impact on the surrounding environment, reduce safety hazards and construction noise, create a safe and comfortable construction environment, and effectively solve the problem of concrete falling and construction site vibration being difficult to absorb and disperse when pouring the working well of jacking construction.

[0021] 5. In this invention, after concrete pouring is complete, a motor is activated to drive a scraper to clean the inner wall of the bucket. This operation brings multiple beneficial effects. It effectively removes residual concrete from the inner wall of the bucket, preventing it from drying and solidifying, maintaining the bucket in good condition, and ensuring the flow and distribution of concrete within the bucket the next time. It also ensures that the discharge holes are unobstructed, avoiding blockages that affect discharge. At the same time, it facilitates construction personnel to observe and control the flow of concrete, improving the accuracy and controllability of construction, and overall enhancing construction efficiency and quality. This solves the problem of difficult cleaning of the bucket after concrete pouring. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a front perspective schematic diagram of a pouring device for a pipe jacking construction working well proposed by the present invention; Figure 2 This is a partial structural diagram of the buffer chute of a pouring device for a pipe jacking construction working pit proposed by the present invention; Figure 3 This is a schematic diagram of the partial structure of the buffer slope of a pouring device for a pipe jacking construction working pit proposed by the present invention; Figure 4 This is a partial structural diagram of the trough barrel of a pouring device for a pipe jacking construction working well proposed by the present invention; Figure 5 This is a schematic diagram of the local structure of the chute of a pouring device for a pipe jacking construction working well proposed by the present invention; Figure 6 This is a schematic diagram of the partial structure of the threaded rod of a pouring device for a pipe jacking construction working well proposed by the present invention; Figure 7 This is a schematic diagram of the partial structure of the buffer base of a pouring device for a pipe jacking construction working pit proposed by the present invention; Figure 8 The present invention provides a flow chart of a pouring construction method for a pipe jacking construction working well.

[0023] Among them, 1. Bottom plate; 2. Buffer rod 1; 3. Buffer rod 2; 4. Buffer base; 5. Slide; 6. Dividing trough barrel; 7. Fixed block 1; 8. Anchor rod; 9. Fixed block 2; 10. Buffer chute; 11. Buffer inclined plate; 12. Buffer funnel; 13. Threaded rod; 14. Guide hopper; 15. Motor; 16. Fixed rod; 17. Scraper block; 18. Spring 1; 19. Spring 2; 20. Buffer block; 21. Support block; 22. Damper. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0025] Please see the attached Figure 1 , Attachment Figure 4 -Attached Figure 6 An embodiment of the present invention provides a casting device for a jacking pipe construction working pit, including a base plate 1, a motor 15 is provided in the middle of the upper surface of the base plate 1, a threaded rod 13 is fixedly provided at the output end of the motor 15, a plurality of fixed rods 16 are threadedly connected to the bottom end of the outer wall of the threaded rod 13, a scraper 17 is provided at one end of the fixed rod 16, a spring 18 is provided on the upper surface of the fixed rod 16, a buffer block 20 is provided at the top of the spring 18, a rotating shaft is provided at one end of the buffer block 20, and support blocks 21 are rotatably connected to both ends of the rotating shaft, the middle part of the support block 21 is threadedly connected to the outer wall of the threaded rod 13, and a guide hopper 14 is provided around the support block 21.

[0026] Specifically, during the pouring process of the pipe jacking work pit, concrete is first poured into the device through the guide hopper 14. At this point, because the motor 15 is not running, the threaded rod 13 is stationary, and components such as the fixed rod 16, scraper block 17, and buffer block 20 also remain stationary. The concrete then flows from the guide hopper 14 into the distribution barrel 6 under its own gravity.

[0027] As concrete gradually accumulates on buffer block 20, the downward pressure on buffer block 20 gradually increases as the weight of the concrete increases. When this pressure exceeds the elastic force of spring 18, buffer block 20 overcomes the elastic force of spring 18 and swings downward around the pivot, compressing spring 18. At this point, the concrete slides down the inclined surface of buffer block 20 and into the interior of the trough barrel 6.

[0028] After the concrete slides down, the elastic force of spring 18 will gradually restore the buffer block 20 to its original position, ready to meet the impact of the next batch of concrete. This buffer mechanism can effectively reduce the impact of the concrete when it falls, avoid the segregation of concrete due to high-speed falling, and ensure the quality of the concrete.

[0029] After pouring is complete, motor 15 is started, rotating threaded rod 13. Since fixed rod 16 is threadedly connected to threaded rod 13, the rotation of threaded rod 13 causes fixed rod 16 to move up and down along the axial direction of threaded rod 13. The movement of fixed rod 16 drives scraper 17 to scrape the inner wall of the trough barrel 6, removing any remaining concrete there, thus cleaning the device and preparing it for the next pour.

[0030] The buffer block 20, in conjunction with the spring, acts as a buffer when the concrete falls, effectively preventing concrete segregation and ensuring its quality, thereby improving the pouring quality and structural strength of the working pit. After pouring, the motor 15 drives the threaded rod 13 to cause the scraper 17 to clean the residual concrete on the inner wall of the trough barrel 6, reducing the workload and difficulty of manual cleaning, enhancing the maintainability of the device, and extending its service life. The position of the support block 21 is adjustable, and the size of the guide hopper 14 can be designed as needed, making the device adaptable to working pits of different specifications and construction conditions, and possessing versatility and flexibility. In addition, the stable structure and effective buffering and cleaning mechanisms reduce the safety hazards caused by concrete impact and vibration during construction, ensuring the safety of construction personnel and equipment. This solves the problems of concrete segregation and difficulty in cleaning the device during pouring in the working pit of pipe jacking construction.

[0031] Please see the attached Figure 1 , Attachment Figure 4 -Attached Figure 5 One side of the scraper block 17 is set on the inner wall of the trough barrel 6, the bottom end of the trough barrel 6 is set on the upper surface of the bottom plate 1, the outer wall of the trough barrel 6 is provided with a plurality of discharge holes, and the discharge holes of the trough barrel 6 are provided with a chute 5.

[0032] Specifically, during the pouring operation of the jacking construction working pit, when concrete enters the trough barrel 6 from the guide hopper 14, the outer wall of the trough barrel 6 is provided with a number of discharge holes, which are channels for the concrete to flow out of the trough barrel 6. Since the bottom end of the trough barrel 6 is firmly set on the upper surface of the base plate 1, the stability of the trough barrel 6 is ensured during the entire pouring process, so that it can reliably receive and transport concrete. The chute 5 provided at the discharge hole of the trough barrel 6 can use gravity to guide the concrete to flow smoothly out of the discharge hole. When the concrete slides down in the chute 5, the inner wall of the chute 5 will generate a certain friction force on the concrete, which slows down the flow rate of the concrete to a certain extent, making the outflow of the concrete more stable and orderly, and avoiding the concrete from being sprayed or splashed due to excessive flow rate.

[0033] The chute 5 directs and cushions the concrete, allowing it to flow into the work pit along a predetermined path and at a predetermined speed. This effectively prevents splashing and spraying during the discharge process, reducing concrete waste and pollution to the construction environment. Furthermore, the smoother flow of concrete reduces problems such as formwork deformation and displacement caused by concrete impacting the work pit formwork or other structures, further ensuring the pouring quality and construction safety of the work pit. This solves the problem of splashing and spraying during the discharge process caused by excessively fast concrete flow.

[0034] Please see the attached Figure 1 -Attached Figure 3 The outer wall of the trough barrel 6 is symmetrically provided with a fixed block 7, the upper surface of the fixed block 7 is provided with an anchor rod 8, the top of the anchor rod 8 is provided with a fixed block 2 9, one end of the fixed block 2 9 is provided with a buffer chute 10, the inner wall of the buffer chute 10 is provided with a plurality of buffer inclined plates 11, the bottom end of the buffer chute 10 is provided with a buffer funnel 12, the bottom end of the buffer funnel 12 is provided above the bottom plate 1, and the bottom end of the bottom plate 1 is provided with a buffer mechanism.

[0035] Specifically, during the pouring process of the jacking construction working pit, the concrete first enters the buffer chute 10 located above the sub-trough barrel 6. The several buffer inclined plates 11 arranged on the inner wall of the buffer chute 10 are key components for realizing the buffering function. After the concrete enters the buffer chute 10, it will collide with these buffer inclined plates 11 many times. Since the buffer inclined plates 11 are arranged at a specific angle, each collision will change the movement direction and speed of the concrete. In this process, part of the kinetic energy of the concrete is converted into heat energy generated by friction with the buffer inclined plates 11, as well as other forms of energy such as elastic potential energy stored in the buffer inclined plates 11 due to slight deformation caused by force, thereby effectively consuming the kinetic energy of the concrete and achieving the purpose of buffering.

[0036] The buffer chute 10 is connected to the trough barrel 6 through the fixed block 2 9, the anchor rod 8 and the fixed block 1 7. The fixed block 1 7 is symmetrically arranged on the outer wall of the trough barrel 6 to provide a stable support base for the anchor rod 8. The anchor rod 8 is vertically installed on the upper surface of the fixed block 1 7, and its top end is connected to the fixed block 2 9, and the fixed block 2 9 is connected to the buffer chute 10. The anchor rod 8 is usually made of high-strength metal material with good toughness and tensile resistance. When the concrete impacts the buffer chute 10, the anchor rod 8 not only plays a connecting role, but also can rely on its own elasticity and strength to buffer the impact force to a certain extent, limit the displacement of the buffer chute 10, and ensure its stability. The concrete buffered by the buffer chute 10 falls from the opening at its bottom end to the inside of the trough barrel 6 below. The bottom end of the trough barrel 6 is firmly set on the upper surface of the base plate 1, which ensures the stability of the trough barrel 6 during the entire pouring process, so that it can reliably receive the concrete from the buffer chute 10.

[0037] The buffer sloping plate 11 within the buffer chute 10 effectively slows the concrete's fall, preventing segregation and ensuring quality, thereby improving the quality of the working pit pouring. The anchor rods 8, in conjunction with the fixing blocks, enhance the stability of the connection between the buffer chute 10 and the trough barrel 6, ensuring reliable concrete delivery. This solves the problem of segregation and equipment damage caused by the high impact of concrete during pipe jacking construction.

[0038] Please see the attached Figure 1 , Attachment Figure 7 The buffer mechanism includes several buffer rods 2, the top of the buffer rod 2 is set on the lower surface of the base plate 1, the outer wall of the buffer rod 2 is slidably connected with the buffer rod 2 3, the bottom end of the buffer rod 2 3 is provided with a buffer base 4, the interior of the buffer rod 2 is provided with a cavity, the bottom end of the buffer rod 2 is provided with a spring 2 19, the bottom end of the spring 2 19 is set at the bottom end of the inner wall of the buffer rod 2 3, the middle part of the spring 2 19 is provided with a damper 22, the bottom end of the damper 22 is set at the inner bottom end of the buffer rod 2 3, and the outer wall of the damper 22 is slidably connected in the cavity of the buffer rod 2.

[0039] Specifically, during the pouring operation of the pipe jacking work pit, the buffer mechanism plays a critical role in shock absorption. When the device is subjected to external vibrations or the impact of falling concrete, the vibration and impact force are first transmitted to the bottom plate 1. Because the top end of the buffer rod 2 is firmly fixed to the lower surface of the bottom plate 1, the bottom plate 1 drives the buffer rod 2 to move synchronously.

[0040] Buffer rod 1 2 and buffer rod 2 3 are connected by a sliding connection, allowing buffer rod 1 2 to slide relative to the outer wall of buffer rod 2 3. When subjected to vibration or impact, buffer rod 1 2 slides up and down along the outer wall of buffer rod 2 3, converting some of the vibration energy into friction energy between the two rods.

[0041] Buffer rod 1 (2) has a cavity inside, providing space for spring 2 (19) and damper 22. The top of spring 2 (19) is connected to the bottom of buffer rod 1 (2), while the bottom is fixed to the bottom of the inner wall of buffer rod 2 (3). During vibration, spring 2 (19) plays a crucial role in elastic cushioning. As buffer rod 1 (2) moves downward, spring 2 (19) is compressed, and its elastic potential energy gradually increases, converting the kinetic energy generated by the vibration into its own elastic potential energy. When the vibration subsides, spring 2 (19) releases this stored elastic potential energy, pushing buffer rod 1 (2) back upward, further dissipating the vibration energy in the process.

[0042] The damper 22 is installed in the middle of the spring 2 19, and its bottom end is fixed to the inner bottom end of the buffer rod 2 3, and the outer wall is slidably connected to the inner wall of the cavity of the buffer rod 1 2. The working principle of the damper 22 is based on its special internal structure and damping medium. When the buffer rod 1 2 slides relative to the buffer rod 2 3, the damper 22 will be squeezed and stretched, and the damping medium inside it will generate resistance, hindering this relative movement. This resistance will convert the vibration energy into heat energy and dissipate it, and the resistance of the damper 22 is related to the movement speed of the buffer rod 1 2. The faster the movement speed, the greater the resistance, and the more energy is consumed. Through the synergistic effect of the spring 2 19 and the damper 22, the vibration energy can be effectively absorbed and consumed, and the vibration amplitude transmitted to the bottom plate 1 and the entire device can be minimized.

[0043] A buffer base 4 is provided at the bottom end of the buffer rod 2 3 , which acts as a stabilizing support. It evenly distributes the force transmitted from the buffer rod 2 3 to the ground or other supporting structure, preventing damage to the supporting structure or tilting of the device due to localized excessive force. It also further enhances the overall stability of the buffer mechanism.

[0044] The synergistic effect of the sliding connection between buffer rod 1 2 and buffer rod 2 3, the elastic buffering of spring 2 19, and the energy-dissipating shock absorption of damper 22 significantly reduces the vibration amplitude of the device during construction, reduces component loosening and wear, and extends the service life of the device. Smaller vibrations ensure uniformity and density during concrete pouring, improving the pouring quality and structural strength of the working pit. At the same time, the impact of vibrations on the surrounding environment is reduced, safety hazards and construction noise are reduced, and a safer and more comfortable working environment is created for construction workers. This solves the problem of concrete falling during pouring in the working pit of jacking construction and the inability to absorb and disperse vibrations generated at the construction site.

[0045] Please see the attached Figure 8 A pouring construction method for a pipe jacking construction working well, a pouring device for a pipe jacking construction working well, the method comprising the following steps: S1. Preparation: Check the status of the bottom plate 1 and each component to ensure that the trough barrel 6 and the discharge hole are unobstructed; S2. Material distribution: Add concrete and let it fall on the surface of the buffer block 20. When the weight of the concrete reaches a certain level, the buffer block 20 will press down and the concrete will slide along its surface; S3. Buffering effect: During the flow of concrete, the buffer block 20 mitigates the impact of the fall by swinging. After being pressed down, the spring 18 returns to its original position and lifts the buffer block 20 again. S4. Anti-vibration measures: When concrete falls from a height of more than 5 meters, the buffer mechanism under the bottom plate 1 absorbs the vertical impact force through buffer rod 1 2 and buffer rod 2 3; S5. End of construction: After shutdown, check the equipment to ensure there are no abnormalities, tidy up the pouring area, and perform equipment maintenance.

[0046] Specifically, before pouring the working pit for the jacking construction, inspecting the base plate 1 and each component is the basis for ensuring smooth construction. As the supporting structure of the entire device, the stability of the base plate 1 is of vital importance. Check whether the base plate 1 has defects such as deformation and cracks to ensure that it can firmly bear other parts of the supporting device and various weights and impact forces during the pouring process. The trough barrel 6 and its discharge hole are key channels for concrete distribution. If there are obstacles, it will cause poor flow of concrete and affect the uniformity of pouring. By carefully inspecting the inside of the trough barrel 6 and the discharge hole, cleaning up possible debris, agglomerated concrete, etc., ensure that the concrete can smoothly pass through the discharge hole and enter the subsequent process.

[0047] During the material distribution stage, concrete is poured in and falls onto the surface of the buffer block 20. The buffer block 20 is connected to the fixed rod 16 via a spring 18. When the weight of the concrete gradually increases and reaches a certain level, the gravity generated is greater than the elastic force of the spring 18, and the buffer block 20 will overcome the elastic force of the spring 18 and press downward. Since one end of the buffer block 20 is rotatably connected to the support block 21 via a rotating shaft, it will swing around the rotating shaft during the downward pressing process, causing the concrete to slide along the inclined surface of the buffer block 20. This design utilizes the elastic principles of gravity and springs to achieve preliminary buffering and guidance of the concrete, preventing the concrete from directly impacting the bottom of the trough barrel 6 at high speed, and ensuring that the concrete can enter the trough barrel 6 relatively evenly.

[0048] During the concrete's sliding, the swinging motion of buffer block 20 plays a crucial role in buffering the concrete. When the concrete impacts buffer block 20, it swings around the axis of rotation, changing the direction of the concrete's impact force and converting some of the impact force into the kinetic energy of buffer block 20's swinging motion and the elastic potential energy of spring 18. After being compressed, spring 18 stores elastic potential energy. When the concrete's weight decreases or the impact force disappears, spring 18 recovers its elastic deformation, releasing the stored elastic potential energy and raising buffer block 20 back to its initial position, ready for the impact of the next batch of concrete. This reciprocating process continuously buffers the impact of the falling concrete, effectively reducing concrete damage to the device.

[0049] When concrete falls from a height exceeding 5 meters, it generates a significant vertical impact force. At this point, the buffer mechanism beneath base plate 1 comes into play. The top of buffer rod 1 (2) is connected to base plate 1. When the impact force is transmitted to base plate 1, buffer rod 1 (2) moves downward. Buffer rod 1 (2) and buffer rod 2 (3) are connected by a sliding mechanism. Buffer rod 1 (2) slides within buffer rod 2 (3), dissipating some of the impact energy through friction between them. Furthermore, buffer rod 1 (2) contains a cavity within it, where spring 2 (19) mounted at the bottom and damper 22 in the middle work together. Spring 2 (19) compresses upon impact, converting the impact's kinetic energy into stored elastic potential energy, thus providing a buffering effect. Damper 22, utilizing its internal damping properties, inhibits the relative motion between buffer rods 1 (2) and 2 (3), dissipating the impact energy into heat. Through the sliding friction between buffer rods 1 (2) and 2 (3), the elastic cushioning provided by spring 2 (19), and the energy-dissipating shock absorption provided by damper 22, vertical impact forces are effectively absorbed, reducing the impact of vibration on the entire device.

[0050] After construction is complete, the equipment is shut down for inspection to ensure it has not sustained any damage or abnormalities after the pouring process. Check that the motor 15 is operating properly, the threaded rod 13 is deformed or worn, and any connections are loose. The pouring area is cleaned up, scattered concrete is removed, and temporary auxiliary facilities are dismantled to restore the cleanliness of the construction site. Equipment maintenance and servicing are performed, such as lubricating the threaded rod 13, checking the performance of the spring and damper 22 in the buffer mechanism, and replacing worn parts, to prepare for the next construction and ensure the equipment is always in good working condition.

[0051] During the preparation phase, a comprehensive inspection of the device is carried out to ensure continuous and efficient construction. During material distribution, the buffer block 20 and spring are used to guide the concrete to achieve uniform delivery into the bucket and improve the pouring quality. The buffering effect effectively reduces the impact force of the concrete, extends the life of the device and ensures the performance of the concrete. Anti-vibration measures absorb the impact force of the concrete falling from a height, reduce the vibration of the device, protect the device structure and improve the safety and comfort of construction. The inspection, sorting and maintenance after the completion of construction can timely discover equipment problems, keep the site clean, create good conditions for the next construction, extend the service life of the equipment and improve the overall efficiency of construction.

[0052] S5 also includes equipment cleaning: after the concrete pouring is completed, the motor 15 is started, and the threaded rod 13 is raised and lowered, so that the scraping block 17 scrapes off the residual concrete on the inner wall of the trough barrel 6.

[0053] Specifically, after the concrete pouring is completed, the motor 15 is started and begins to operate, and its output end drives the threaded rod 13 fixedly connected thereto to rotate. Since the threaded rod 13 and the fixing rod 16 engage with each other through threads, the rotation of the threaded rod 13 causes the fixing rod 16 to move up and down along the axial direction of the threaded rod 13.

[0054] A scraper block 17 is mounted on one end of the fixed rod 16. One side of the scraper block 17 fits tightly against the inner wall of the bucket 6. As the fixed rod 16 is raised or lowered, the scraper block 17 reciprocates up and down along the inner wall of the bucket 6. The scraper block 17 is typically made of a material with a certain degree of elasticity and wear resistance, such as rubber or a special wear-resistant plastic. This allows it to conform to the inner wall of the bucket 6 while effectively scraping away residual concrete adhering thereto.

[0055] During the scraping process, the shape of the scraper block 17 and its contact pattern with the inner wall of the bucket 6 have been carefully designed. Its scraping surface matches the curvature of the inner wall of the bucket 6, ensuring that every area of the inner wall of the bucket 6 is covered during its movement, leaving no blind spots. Furthermore, the scraper block 17 maintains appropriate pressure against the inner wall of the bucket 6, ensuring effective removal of residual concrete without causing excessive wear to the inner wall of the bucket 6.

[0056] After concrete pouring is complete, starting motor 15 to drive scraper 17 to clean the inner wall of bucket 6 offers several beneficial effects. This effectively removes residual concrete from the inner wall of bucket 6, preventing it from drying and solidifying, maintaining bucket 6 in good condition and ensuring the flow and distribution of concrete within bucket 6 during the next pour. It also ensures unobstructed discharge holes, preventing blockages that could affect discharge. Furthermore, it facilitates observation and control of concrete flow by construction workers, improving accuracy and controllability of construction, and ultimately enhancing overall efficiency and quality. This solves the problem of difficult cleaning of bucket 6 after concrete pouring.

[0057] S5 also includes condition inspection: observing whether there are cracks on the concrete surface, and promptly discovering and treating surface cracks.

[0058] Specifically, after the concrete pouring is complete in the pipe jacking construction pit, the inspection phase begins. Construction personnel primarily rely on visual inspection, drawing on their professional experience and understanding of concrete properties to closely and comprehensively observe the concrete surface. After pouring, concrete undergoes hydration reactions, water evaporation, and temperature fluctuations, all of which can cause stress changes within the concrete. When internal stress exceeds the concrete's inherent tensile strength, cracks will form on the concrete surface.

[0059] Once cracks are discovered, it is necessary to promptly determine the cause of the cracks. If shrinkage cracks are caused by rapid water loss in the early stages of concrete pouring, it may be due to inadequate maintenance measures, such as untimely watering or loose covering. If temperature cracks are caused by excessive hydration heat inside the concrete and the temperature difference between the inside and outside, it is necessary to analyze factors such as the concrete mix ratio, pouring process, and construction environment temperature. Appropriate treatment measures should be taken for cracks caused by different reasons. For example, for shrinkage cracks with a smaller width, you can apply repair materials such as polymer cement slurry to the surface, using the good adhesion and waterproof properties of the repair materials to fill the cracks and prevent further water intrusion. For temperature cracks, if the cracks are deeper, it may be necessary to use pressure grouting to inject grouting materials such as epoxy resin into the cracks to fill and reinforce the cracks and restore the integrity and strength of the concrete.

[0060] By inspecting the concrete surface after construction, cracks and other quality defects can be detected promptly. This process effectively monitors the quality of concrete pouring and ensures the safety and stability of the pit structure. Timely crack treatment can prevent further development and prevent them from adversely affecting the pit's load-bearing capacity and waterproofing. At the same time, timely crack treatment can also improve the pit's durability, reducing subsequent maintenance costs and repair workload. From an overall construction perspective, this approach of promptly identifying and addressing problems helps ensure that project quality meets design requirements and improves the project's reliability and service life. It solves the problem of difficulty in promptly identifying and addressing quality risks after concrete pouring.

[0061] S5 also includes strength testing: after the prescribed curing period, samples are taken and the compressive strength of the concrete is tested to ensure that it reaches the design strength.

[0062] Specifically, after the prescribed curing period, the strength development of the concrete has basically stabilized, and strength testing will begin at this time. The first step is sampling. Construction workers will select representative locations on the concrete structure of the jacking construction work pit for sampling in accordance with relevant standards and specifications. A special concrete coring machine is usually used to remove cylindrical core samples from the concrete by rotary cutting. The drill bit of the coring machine is equipped with wear-resistant materials such as emery, which can penetrate the concrete smoothly without destroying the integrity of the core sample. During the sampling process, it is necessary to ensure that the size of the core sample meets the test requirements. Generally, the diameter and height of the core sample are clearly specified. For example, the common diameter is 100mm or 150mm, and the ratio of height to diameter is between 1-2.

[0063] After the core sample is taken out, it is brought back to the laboratory for compressive strength testing. The equipment used for testing is a pressure testing machine, which works by applying gradually increasing pressure to the core sample placed between the upper and lower pressure plates through a hydraulic system. Under the action of pressure, the core sample will gradually deform. As the pressure continues to increase, when the pressure on the core sample exceeds its own compressive limit, the core sample will be damaged, such as breaking and shattering. The pressure testing machine is equipped with high-precision pressure sensors and displacement measuring devices, which can record the pressure value applied to the core sample and the deformation of the core sample in real time. When the core sample is damaged, the maximum pressure value displayed by the pressure testing machine is the failure load of the core sample. According to the size of the core sample, the compressive strength of the concrete can be calculated through a specific calculation formula to determine whether the concrete has reached the design strength.

[0064] By conducting strength testing on the concrete after the curing cycle, the actual strength of the concrete can be accurately determined. This provides a scientific basis for determining whether the quality of the pipe jacking construction pit meets the design requirements. If the test results indicate that the concrete has reached the design strength, it can be confirmed that the pit structure has sufficient load-bearing capacity and stability to meet the requirements of subsequent pipe jacking construction and long-term use. This not only ensures the quality and safety of the current project but also provides guarantees for its smooth progress. At the same time, the test results can also serve as an important basis for project acceptance, improving the credibility and reliability of the project quality. This solves the problem of being unable to determine whether the actual strength of the concrete meets the design requirements.

[0065] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A pouring device for a pipe jacking construction working pit, comprising a bottom plate (1), characterized in that: A motor (15) is provided in the middle of the upper surface of the base plate (1), a threaded rod (13) is fixedly provided at the output end of the motor (15), a plurality of fixed rods (16) are threadedly connected to the bottom end of the outer wall of the threaded rod (13), a scraper (17) is provided at one end of the fixed rod (16), a spring (18) is provided on the upper surface of the fixed rod (16), a buffer block (20) is provided at the top end of the spring (18), a rotating shaft is provided at one end of the buffer block (20), and support blocks (21) are rotatably connected at both ends of the rotating shaft, a middle part of the support block (21) is threadedly connected to the outer wall of the threaded rod (13), and a guide hopper (14) is provided around the support block (21).

2. A pouring device for a pipe jacking construction working well according to claim 1, characterized in that: One side of the scraper (17) is arranged on the inner wall of the trough bucket (6), the bottom end of the trough bucket (6) is arranged on the upper surface of the bottom plate (1), the outer wall of the trough bucket (6) is provided with a plurality of discharge holes, and the discharge holes of the trough bucket (6) are provided with a chute (5).

3. A pouring device for a pipe jacking construction working well according to claim 2, characterized in that: A fixing block 1 (7) is symmetrically provided on the outer wall of the trough barrel (6), an anchor rod (8) is provided on the upper surface of the fixing block 1 (7), a fixing block 2 (9) is provided on the top end of the anchor rod (8), and a buffer chute (10) is provided at one end of the fixing block 2 (9).

4. A pouring device for a pipe jacking construction working well according to claim 3, characterized in that: The inner wall of the buffer chute (10) is provided with a plurality of buffer inclined plates (11), the bottom end of the buffer chute (10) is provided with a buffer funnel (12), the bottom end of the buffer funnel (12) is arranged above the bottom plate (1), and the bottom end of the bottom plate (1) is provided with a buffer mechanism.

5. A pouring device for a pipe jacking construction working well according to claim 4, characterized in that: The buffer mechanism comprises a plurality of buffer rods (2), the top end of each buffer rod (2) being arranged on the lower surface of the base plate (1), the outer wall of each buffer rod (2) being slidably connected to a buffer rod (3), the bottom end of each buffer rod (3) being provided with a buffer base (4), and a cavity being provided inside each buffer rod (2).

6. A pouring device for a pipe jacking construction working well according to claim 5, characterized in that: The bottom end of the buffer rod 1 (2) is provided with a spring 2 (19), the bottom end of the spring 2 (19) is provided at the bottom end of the inner wall of the buffer rod 2 (3), a damper (22) is provided in the middle of the spring 2 (19), the bottom end of the damper (22) is provided at the inner bottom end of the buffer rod 2 (3), and the outer wall of the damper (22) is slidably connected in the cavity of the buffer rod 1 (2).

7. A pouring construction method for a pipe jacking construction working well, characterized in that: A pouring device for a pipe jacking construction working well according to any one of claims 1 to 6, wherein the method comprises the following steps: S1. Preparation: Check the status of the bottom plate (1) and each component to ensure that the trough barrel (6) and the discharge hole are unobstructed and free of obstructions; S2, material distribution: concrete is poured in and falls on the surface of the buffer block (20). When the weight of the concrete reaches a certain level, the buffer block (20) presses down and the concrete slides along its surface; S3. Buffering effect: During the flow of concrete, the buffer block (20) mitigates the impact of the fall by swinging. After being pressed down, the spring (18) returns to its original position and lifts up the buffer block (20) again. S4. Anti-vibration measures: When concrete falls from a height of more than 5 meters, the buffer mechanism under the bottom plate (1) absorbs the vertical impact force through the buffer rod 1 (2) and the buffer rod 2 (3); S5. End of construction: After shutdown, check the equipment to ensure there are no abnormalities, tidy up the pouring area, and perform equipment maintenance.

8. A pouring construction method for a pipe jacking construction working well according to claim 7, characterized in that: Said S5 also includes equipment cleaning: after the concrete pouring is completed, the motor (15) is started, and the threaded rod (13) is raised and lowered so that the scraper (17) scrapes away the residual concrete on the inner wall of the trough barrel (6).

9. A pouring construction method for a pipe jacking construction working well according to claim 7, characterized in that: The step S5 also includes a condition inspection: observing whether cracks appear on the concrete surface, and promptly discovering and treating surface cracks.

10. A pouring construction method for a pipe jacking construction working well according to claim 7, characterized in that: The S5 also includes strength testing: after the prescribed curing period, samples are taken and the compressive strength of the concrete is tested to ensure that it reaches the designed strength.

Images