A pipe jacking shaft slotting synchronous pouring device and a construction method thereof

Abstract

The application relates to the field of municipal construction, in particular to a pipe jacking working well sub-slot synchronous pouring device and a construction method thereof, which comprises a slurry conveying pipe, one end of the slurry conveying pipe is connected with the output end of a pump truck in communication, a buffer assembly for buffering concrete falling is arranged on the other end of the slurry conveying pipe, the buffer assembly comprises a slurry inlet for feeding concrete from the slurry conveying pipe and a slurry outlet for discharging concrete, a slurry distribution assembly is arranged outside the slurry outlet of the buffer assembly, the slurry distribution assembly comprises a slurry distribution box, a lifting driving element is arranged on the slurry distribution box, the lifting driving element is used for being installed in a working well to control the lifting of the slurry distribution box, a plurality of slurry conveying slides are arranged on the slurry distribution box, a plurality of discharge ports are formed in the slurry distribution box, the discharge ports are communicated with the corresponding slurry conveying slides, and the slurry conveying slides output concrete to a pouring mold in the working well. The application has the effect of improving the construction inconvenience.

Description

Technical Field

[0001] This application relates to the field of municipal construction, and in particular to a device for synchronous pouring of trenches in a pipe jacking working well and its construction method. Background Technology

[0002] With the development of urban construction, the expansion of cities, and the construction of new houses in cities, it is often necessary to carry out pipeline construction again in cities that have already been built. However, ground excavation construction will affect traffic and pedestrians. Pipe jacking construction is a trenchless pipeline construction method.

[0003] The first step in pipe jacking construction is to build two working shafts at the starting and destination points, and then connect the two working shafts with a pipeline using pipe jacking. During the construction of the working shafts, pits are usually dug first, then casting molds are erected inside the working shafts, and concrete is poured into the casting molds to construct the inner walls of the working shafts. Nowadays, depending on the situation, multiple casting molds or a single casting mold divided into multiple casting cavities can be used to achieve multiple pours, thereby improving the structural strength of the concrete and reducing the impact of internal stress; this is known as the segmented casting method.

[0004] However, in the construction of working wells, pump trucks are usually required to pour the concrete from above. But some construction sites require passing through narrow roads, and due to traffic restrictions, pump trucks cannot directly reach the construction site, which leads to inconvenience in the operation. Summary of the Invention

[0005] To address the inconvenience caused by traffic restrictions during construction, this application provides a device for synchronous pouring of trenches in a pipe jacking working shaft and its construction method.

[0006] This application provides a synchronous pouring device and construction method for trenching in a pipe jacking working shaft, which adopts the following technical solution:

[0007] A synchronous pouring device for trenching in a pipe jacking working shaft includes a grout delivery pipe. One end of the grout delivery pipe is connected to the output end of a pump truck. The other end of the grout delivery pipe is equipped with a buffer assembly for buffering the falling concrete. The buffer assembly includes a grout inlet for concrete to enter through the grout delivery pipe and a grout outlet for concrete to exit. A grout distribution assembly is provided outside the grout outlet of the buffer assembly. The grout distribution assembly includes a grout distribution box. A lifting drive is provided on the grout distribution box. The lifting drive is installed inside the working shaft to control the lifting and lowering of the grout distribution box. The grout distribution box is also provided with several grout delivery channels. Several discharge ports are opened on the grout distribution box. The discharge ports are connected to the corresponding grout delivery channels. The grout delivery channels output concrete to the pouring mold inside the working shaft.

[0008] By adopting the above technical solution, when the construction environment at the construction site makes it difficult for the pump truck to enter, the concrete from the pump truck can be transported through the grouting pipe. The grouting pipe comes from the air, which can also reduce the impact on the construction equipment on the ground. Then, the buffer component is used to buffer the falling concrete from the grouting pipe, and then the concrete falls into the grouting box for grouting and enters the grouting chute into the pouring mold for pouring, which greatly reduces the impact of the environment on construction.

[0009] Optionally, a plurality of control plates are rotatably mounted on the slurry box. The control plates are used to close the opening surfaces of the corresponding discharge ports and to control the opening and closing of the discharge ports by rotation.

[0010] By adopting the above technical solution, the opening size of the discharge port is controlled by rotating the control plate, thereby achieving control over the amount of concrete discharged.

[0011] Optionally, a buffer plate is slidably and vertically installed inside the slurry separator. The buffer plate is provided with a reset component for resetting the buffer plate and an energy-consuming component for absorbing the impact energy received by the buffer plate. The reset component and the energy-consuming component are installed on the slurry separator.

[0012] By adopting the above technical solution, when concrete falls onto the buffer plate, the impact force of the concrete will compress the reset component and the energy dissipation component. The energy dissipation component will dissipate the impact force, and the reset component will restore the weight of the concrete after it has lost its impact. This reduces the impact of the falling concrete on the lifting drive component and the slurry box, thus playing a protective role.

[0013] Optionally, a slurry control groove is provided through the side wall of the slurry box, and a slurry control rod is provided on the buffer plate, extending from the slurry control groove to the outside. A slurry clearance groove is provided on the inner wall of the slurry control groove, and a slurry sealing plate is provided on the slurry control rod, which is inserted into the slurry clearance groove. The slurry sealing plate is used to close the opening of the slurry control groove. A transmission gear is provided on the rotating shaft of the control plate, and adjacent transmission gears mesh with each other. A transmission rod is provided at the end of the slurry control rod, and a plurality of transmission grooves are provided on the transmission rod for meshing with the transmission gear. The transmission rod meshes with adjacent transmission gears.

[0014] By adopting the above technical solution, the slurry control rod descends as the buffer plate sinks, which in turn drives the transmission rod to descend. The transmission rod then drives the transmission gear to rotate via the transmission groove. The meshing of adjacent transmission gears drives other control plates to rotate together and open the discharge port. The more concrete on the buffer plate and the greater its mass, the greater the distance the buffer plate sinks, and the larger the discharge port opened by the control plate. This achieves automatic adjustment of the concrete output speed to the casting mold based on the concrete output speed of the pump truck, which is convenient, fast, and improves adaptability.

[0015] Optionally, the buffer assembly includes a buffer box, with the grout inlet and outlet both extending through the buffer box. The buffer box contains several buffer inclined plates distributed along the direction of concrete descent. The buffer inclined plates are used to catch the falling concrete, and the several buffer inclined plates are arranged alternately inside the buffer box.

[0016] By adopting the above technical solution, the falling concrete is supported by a buffer ramp, and the concrete then slides down to the next buffer ramp as the ramp tilts. This divides the complete concrete falling process into multiple segments, catching the concrete at intervals to reduce the impact force of the falling concrete and thus playing a protective role.

[0017] Optionally, the inner wall of the buffer box is provided with several rotating grooves, and the buffer inclined plate includes a buffer shaft rotatably disposed in the rotating groove. The side wall of the buffer shaft abuts and seals against the inner wall of the rotating groove. A buffer slide groove is provided through the buffer shaft, and a buffer baffle is slidably disposed in the buffer slide groove. The buffer baffle is inserted into the buffer box to buffer the concrete. The diameter of the end section of the buffer baffle is larger than the diameter of the opening section of the buffer slide groove. A limiting member is provided in the rotating groove to limit the rotation angle of the buffer shaft. A trigger plate is provided on the slurry box. The trigger plate is used to push the buffer baffle to rotate and slide into the rotating groove.

[0018] By adopting the above technical solution, when the slurry box is lifted by the lifting drive, the trigger plate will push against the buffer baffle and push the buffer baffle to rotate upward. When the limiting component limits the rotation of the buffer shaft, the buffer baffle will slide back into the rotating groove under the guidance of the trigger plate, thereby realizing the function of automatically retracting the buffer baffle. This reduces the probability that the buffer baffle will fall into the slurry box when the slurry box is lifted, affecting the buffer plate and the flow of concrete in the slurry box.

[0019] Optionally, the buffer box includes several rings distributed along the direction of concrete fall. The rotating groove is formed on the rings. A waterproof cloth for sealing is provided between adjacent rings. The same guide rod passes through several rings. The rings slide along the length of the guide rod. A push rod is rotatably provided on the ring for limiting the movement of adjacent rings. The push rod is against the inner wall of the rotating groove. The buffer baffle slides back into the rotating groove and rotates the push rod out from the inner wall of the rotating groove, releasing the limitation of adjacent rings by adjacent push rods. The slurry box pushes the rings together. The trigger plate 55 is also provided inside the ring to trigger the buffer baffle inside the adjacent ring.

[0020] By adopting the above technical solution, when the trigger plate on the slurry box pushes the buffer baffle back to the rotating trough, the buffer baffle will push the push rod to rotate. The push rod rotates out from the inner wall of the rotating trough, releasing the pushing limit on the box ring. When the slurry box is lifted, it can push the box ring to lift. The waterproof cloth is folded between the adjacent box rings, and the trigger plate on the box ring can trigger the buffer baffle on the adjacent box ring. This realizes that the box ring is automatically lifted when the slurry box is lifted, so that the slurry box and the box ring always maintain a certain distance. This further reduces the probability of the buffer baffle falling into the slurry box and interfering with the operation of the buffer plate and the flow of concrete.

[0021] Optionally, one construction method includes:

[0022] Excavate a working well at the designated location, place the lifting drive and slurry distribution box at the bottom of the working well, and align the slurry conveying slide with the feed port of the lowest casting mold;

[0023] The concrete inside the pump truck enters the buffer assembly through the grout delivery pipe. After being buffered by the buffer assembly, it falls onto the buffer plate of the grout distribution box. The buffer plate descends under pressure, thereby driving the transmission rod to descend, which in turn drives the transmission gear to rotate. The control panel is then opened, and the concrete enters the grout delivery chute and enters the casting mold.

[0024] After the bottom casting mold is completed, the slurry distribution box is raised by the lifting drive component so that the slurry conveying slide is aligned with the feed port of the upper casting mold for casting.

[0025] By adopting the above technical solutions, the probability of pump trucks being unable to enter the construction section and other construction equipment installed on the ground affecting the construction is reduced, the construction difficulty is reduced, and different concrete output speeds are automatically adapted.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. It greatly reduces the impact of the environment on construction.

[0028] 2. It reduces the impact force on concrete and enables automatic adjustment of the concrete output speed to the casting mold based on the concrete output speed of the pump truck, which is convenient, fast, and improves adaptability. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of a synchronous pouring device for trenching of a pipe jacking working well, as described in an embodiment of this application.

[0030] Figure 2 This is an exploded structural diagram highlighting the slurry distribution groove.

[0031] Figure 3 yes Figure 2A magnified structural diagram of point A in the middle.

[0032] Figure 4 It is along Figure 1 A cross-sectional view of the BB line.

[0033] Figure 5 It is along Figure 1 A cross-sectional view of the CC line.

[0034] Figure 6 yes Figure 5 A magnified structural diagram at point D.

[0035] Figure 7 This is an exploded structural diagram highlighting the limiting groove.

[0036] Explanation of reference numerals in the attached drawings: 1. Slurry delivery pipe; 2. Buffer assembly; 21. Slurry inlet; 22. Slurry outlet; 23. Buffer box; 24. Buffer inclined plate; 3. Slurry distribution assembly; 31. Slurry distribution box; 32. Lifting drive component; 33. Slurry delivery slide; 34. Discharge port; 35. Control panel; 4. Buffer plate; 41. Reset component; 42. Energy-consuming component; 43. Slurry distribution control groove; 431. Slurry distribution clearance groove; 44. Slurry distribution control rod; 441. Slurry distribution sealing plate; 45. Transmission gear; 46. Transmission rod; 461. Transmission groove; 5. Rotary groove; 51. Buffer rotating shaft; 52. Buffer slide; 53. Buffer baffle; 54. Limiting component; 55. Trigger plate; 56. Limiting groove; 6. Box ring; 61. Waterproof cloth; 62. Guide rod; 63. Top rod. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0038] This application discloses a device for synchronous pouring of trenches in a pipe jacking working shaft and its construction method. (Refer to...) Figure 1 The synchronous pouring device for the jacking shaft includes a grout delivery pipe 1. One end of the grout delivery pipe 1 is connected to the output end of the pump truck, and the other end of the grout delivery pipe 1 is fixedly connected to a buffer assembly 2 for buffering the falling concrete. The buffer assembly 2 includes a grout inlet 21 for concrete to enter from the grout delivery pipe 1 and a grout outlet 22 for concrete to exit. A grout distribution assembly 3 is placed inside the shaft, located outside the grout outlet 22 of the buffer assembly 2. The grout distribution assembly 3 includes a grout distribution box 31, with the opening of the grout distribution box 31 aligned with the grout outlet 22, and the concrete output from the grout outlet 22 falling into the grout distribution box 31. A lifting drive component 32 is installed on the outer wall of the grout distribution box 31. In this embodiment, the lifting drive component 32 is a cylinder. The lifting drive component 32 is installed inside the shaft to control the lifting and lowering of the grout distribution box 31. The telescopic rod of the lifting drive component 32 can be fixed to the outer wall of the grout distribution box 31 by bolts or snap-fit.

[0039] Reference Figure 2 and Figure 3 and Figure 4 Four grout conveying channels 33 are fixedly connected to the grout distribution box 31. The four grout conveying channels 33 correspond to the casting molds on the four inner walls of the working well, and are installed on the four side walls of the grout distribution box 31. Four discharge ports 34 are provided through the grout distribution box 31. The four discharge ports 34 correspond one-to-one with the grout conveying channels 33 and are connected to the corresponding grout conveying channels 33. The grout conveying channels 33 output concrete to the casting molds in the working well.

[0040] Reference Figure 3 and Figure 4 In this embodiment, the direction of gravity is downward, and vice versa. Four control plates 35 are rotatably connected to the pulping box 31. The four control plates 35 correspond one-to-one with the four discharge ports 34. The control plates 35 are used to close the opening surface of the corresponding discharge ports 34. Rotating the control plates 35 controls the opening and closing of the discharge ports 34 and the size of the opening of the discharge ports 34. The rotation axis of the control plates 35 is located above the discharge ports 34.

[0041] Reference Figure 3 and Figure 4 A buffer plate 4 slides vertically up and down inside the pulping box 31. The four sides of the buffer plate 4 abut against and fit against the four inner walls of the pulping box 31 to achieve a seal. A reset member 41 for resetting the buffer plate 4 and an energy-dissipating member 42 for absorbing the impact energy received by the buffer plate 4 are installed on the buffer plate 4. In this embodiment, the reset member 41 is a spring, and the energy-dissipating member 42 is a hydraulic cylinder. One end of the reset member 41 is fixedly connected to the center of the bottom wall of the pulping box 31, and the other end is fixedly connected to the center of the side wall of the buffer plate 4 facing the bottom wall of the pulping box 31. There are four energy-dissipating members 42, which are fixedly connected to the four corners of the bottom wall of the pulping box 31, and the telescopic rods of the four energy-dissipating members 42 are fixedly connected to the four corners of the side wall of the buffer plate 4 facing the bottom wall of the pulping box 31.

[0042] Reference Figure 3 and Figure 4A slurry control groove 43 is provided through the side wall of the slurry box 31. The slurry control groove 43 extends along the sliding direction of the buffer plate 4. A slurry control rod 44 is fixedly connected to the buffer plate 4, extending through the slurry control groove 43 to the outside. Slurry clearance grooves 431 are provided on the inner walls at both ends of the slurry control groove 43. A slurry sealing plate 441 is fixedly connected to the slurry control rod 44 and inserted into the slurry clearance groove 431. The length of the slurry clearance groove 431 is greater than the sliding distance of the buffer plate 4. The length of the slurry sealing plate 441 in the sliding direction of the buffer plate 4 is greater than the sliding distance of the buffer plate 4. The side wall of the slurry sealing plate 441 fits against the inner wall of the slurry clearance groove 431 and is used to close the opening of the slurry control groove 43.

[0043] Reference Figure 3 A transmission gear 45 is fixedly connected to both ends of the rotation axis of the control plate 35. In this embodiment, the transmission gear 45 is a reversing bevel gear, and two adjacent transmission gears 45 on the rotation axis of adjacent control plates 35 mesh with each other. A transmission rod 46 is fixedly connected to the end of the slurry control rod 44 located outside the slurry box 31. The length direction of the transmission rod 46 extends along the sliding direction of the buffer plate 4. The transmission rod 46 has several transmission grooves 461 for meshing with the transmission gears 45. The several transmission grooves 461 are evenly distributed along the length direction of the transmission rod 46. The transmission rod 46 is located between the rotation axes of adjacent control plates 35, so that the transmission rod 46 meshes with the transmission gears 45 on both sides at the same time. In this embodiment, the two transmission gears 45 that mesh with the transmission grooves 461 are spur gears.

[0044] Reference Figure 1 and Figure 5 The buffer assembly 2 includes a buffer box 23, with a grout inlet 21 extending through the upper surface of the buffer box 23 and a grout outlet 22 extending through the lower surface of the buffer box 23. The upper surface of the buffer box 23 is fixedly connected to the end of the grout delivery pipe 1 by bolts or other snap-fit ​​structures. Several buffer inclined plates 24 are installed inside the buffer box 23, distributed along the direction of concrete descent. The buffer inclined plates 24 are inclined downwards towards the center of the buffer box 23, and their length is greater than half the diameter of the internal cross-section of the buffer box 23. Furthermore, when the buffer inclined plates 24 are tilted, their length also exceeds the central axis of the internal space of the buffer box 23. The buffer inclined plates 24 are used to catch the falling concrete, and several buffer inclined plates 24 are arranged alternately inside the buffer box 23.

[0045] Reference Figure 1 and Figure 5The buffer box 23 is composed of several rings 6, waterproof cloth 61, and guide rods 62. The rings 6 are evenly distributed along the direction of gravity of the falling concrete, and the space enclosed by the center of the rings 6 is used for the falling concrete. Several waterproof cloths 61 are located between adjacent rings 6, with one end of the waterproof cloth 61 fixedly connected to the side wall of the adjacent ring 6 and the other end of the waterproof cloth 61 fixedly connected to the side wall of another adjacent ring 6. The guide rods 62 extend along the direction of gravity and pass through the rings 6. Several rings 6 slide on the same guide rod 62, and several buffer ramps 24 correspond one-to-one with several rings 6.

[0046] Reference Figure 6 A rotating groove 5 is formed on the upper surface of the ring 6, and the rotating groove 5 extends through the side wall of the ring 6 into the interior of the ring 6. A buffer shaft 51 is rotatably connected inside the rotating groove 5. The outer side wall of the buffer shaft 51 abuts against and fits against the inner wall of the rotating groove 5, which is connected to the interior of the ring 6, thus sealing the rotating groove 5. A buffer groove 52 is formed through the side wall of the buffer shaft 51 along its length direction. The buffer groove 52 extends along the diameter of the buffer shaft 51. A buffer baffle 53 slides inside the buffer groove 52. The cross-sectional diameter of the two ends of the buffer baffle 53 is larger than the cross-sectional diameter of the opening of the buffer groove 52, while the cross-sectional diameter of the middle section of the buffer baffle 53 is equal to the cross-sectional diameter of the opening of the buffer groove 52.

[0047] Reference Figure 5 and Figure 6 When the buffer baffle 53 slides into the internal space of the ring 6, the buffer baffle 53 tilts downwards as it gets closer to the center of the ring 6, and the length of the buffer baffle 53 is greater than half the diameter of the internal space of the ring 6. In the tilted state, the length of the buffer baffle 53 also exceeds the central axis of the internal space of the ring 6. The buffer baffles 53 in adjacent rings 6 are staggered.

[0048] Reference Figure 7 A limiting groove 56 is provided on the end of the buffer shaft 51 along its length. The limiting groove 56 extends along the rotation direction of the buffer shaft 51. A limiting member 54 for limiting the rotation angle of the buffer shaft 51 is fixedly connected in the groove 5. The limiting member 54 is columnar and inserted into the limiting groove 56 to limit the rotation angle of the buffer shaft 51.

[0049] Reference Figure 3 and Figure 5 and Figure 6A trigger plate 55 is fixedly connected to the side wall of the slurry box 31. The upper surface of the trigger plate 55 is inclined, and the inclined side wall of the trigger plate 55 is inclined upward and away from the ground as it approaches the middle section. That is, the upper surface of the trigger plate 55 is highest in the middle section and inclined downward on both sides. The trigger plate 55 is used to push the buffer baffle 53 to rotate and slide into the rotating groove 5. The trigger plate 55 is also fixedly connected to the inner wall of the box ring 6 and is used to push the buffer baffle 53 in the previous box ring 6.

[0050] Reference Figure 1 and Figure 6 A push rod 63 is rotatably connected to the lower end face of the box ring 6. One end of the push rod 63 is hinged to the lower end face of the box ring 6, and the other end of the push rod 63 abuts against the inner wall of the rotating groove 5 of the adjacent lower box ring 6. The push rod 63 limits the vertical movement of the lower box ring 6. When the buffer baffle 53 slides back into the rotating groove 5, the end of the buffer baffle 53 away from the internal space of the box ring 6 pushes the push rod 63 out from the inner wall of the rotating groove 5, releasing the limit of the push rod 63 on the adjacent box ring 6. The slurry box 31 then pushes the box ring 6 to slide upward and stack them together.

[0051] The implementation principle of the synchronous pouring device for trenching of the jacking working well in this application embodiment is as follows: When pouring begins, the concrete output by the pump truck falls from the grout inlet 21 of the box ring 6 through the grout delivery pipe 1 onto the buffer baffle 53, slides down along the inclined direction of the buffer baffle 53 onto the next buffer baffle 53, and finally falls into the grout distribution box 31. After the buffer plate 4 is subjected to the pressure of the concrete, it compresses the reset component 41 and the energy dissipation component 42 and slides downward. The grout distribution control rod 44 descends, driving the transmission rod 46 to descend. Through the transmission groove 461, the transmission gear 45 is driven to rotate, thereby driving the control plate 35 to rotate and open the discharge port 34 so that the concrete enters the pouring mold through the grout delivery slide 33.

[0052] A construction method includes digging a working well at a designated location, placing a lifting drive 32 and a slurry distribution box 31 at the bottom of the working well, and aligning the slurry conveying chute 33 with the inlet of the lowest casting mold.

[0053] The concrete inside the pump truck enters the box ring 6 through the grouting pipe 1. After being buffered by the buffer baffle 53, it falls onto the buffer plate 4 of the grouting box 31. The buffer plate 4 is compressed and then descends, thereby driving the transmission rod 46 to descend, driving the transmission gear 45 to rotate, opening the control panel 35, and allowing the concrete to enter the grouting slide 33 and enter the casting mold.

[0054] After the bottom casting mold is completed, the slurry distribution box 31 is raised by the lifting drive component 32, so that the slurry conveying slide 33 is aligned with the feed port of the upper casting mold for casting. At this time, the trigger plate 55 will push the buffer baffle 53 to rotate upward. As the buffer baffle 53 abuts against the inner wall of the rotating groove 5, and the limiting component 54 abuts against the inner wall of the limiting groove 56 and cannot continue to rotate, the trigger plate 55 continues to rise. The buffer baffle 53 will retract into the rotating groove 5 under the guidance of the inclined side wall of the trigger plate 55. At this time, the buffer baffle 53 will push the push rod 63, so that the push rod 63 rotates out from the inner wall of the rotating groove 5. At the same time, the slurry distribution box 31 will push the bottom box ring 6 to rise. After the bottom box ring 6 releases the limit of the push rod 63 above through its own trigger plate 55, it will push the upper box ring 6 to rise.

[0055] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A device for synchronous pouring of trenches in a pipe jacking working shaft, characterized in that: The system includes a grouting pipe (1), one end of which is connected to the output end of the pump truck. The other end of the grouting pipe (1) is provided with a buffer assembly (2) for buffering the falling concrete. The buffer assembly (2) includes a grout inlet (21) for concrete to enter from the grouting pipe (1) and a grout outlet (22) for concrete to exit. A grout distribution assembly (3) is provided outside the grout outlet (22) of the buffer assembly (2). The grout distribution assembly (3) includes a grout distribution box (31). A lifting drive (32) is provided on the grout distribution box (31). The lifting drive (32) is used to be installed in the working well to control the lifting of the grout distribution box (31). The grout distribution box (31) is also provided with several grouting slides (33). Several discharge ports (34) are opened on the grout distribution box (31). The discharge ports (34) are connected to the corresponding grouting slides (33). The grouting slides (33) output concrete to the casting mold in the working well. The buffer assembly (2) includes a buffer box (23), and the grout inlet (21) and grout outlet (22) are both opened through the buffer box (23). The buffer box (23) is provided with a number of buffer inclined plates (24) distributed along the direction of concrete falling. The buffer inclined plates (24) are used to catch the falling concrete. The number of buffer inclined plates (24) are arranged alternately in the buffer box (23). The inner wall of the buffer box (23) is provided with several rotating grooves (5). The buffer inclined plate (24) includes a buffer rotating shaft (51) rotatably disposed in the rotating groove (5). The side wall of the buffer rotating shaft (51) is in contact with and sealed to the inner wall of the rotating groove (5). A buffer sliding groove (52) is provided through the buffer rotating shaft (51). A buffer baffle (53) is slidably disposed in the buffer sliding groove (52). The buffer baffle (53) is inserted into the buffer box (23) to buffer the concrete. The diameter of the end section of the buffer baffle (53) is larger than the diameter of the opening section of the buffer sliding groove (52). A limiting member (54) is provided in the rotating groove (5) to limit the rotation angle of the buffer rotating shaft (51). A trigger plate (55) is provided on the slurry box (31). The trigger plate (55) is used to push the buffer baffle (53) to rotate and slide into the rotating groove (5).

2. The synchronous pouring device for trenching in a pipe jacking working shaft according to claim 1, characterized in that: The slurry box (31) is rotatably equipped with several control plates (35), which are used to close the opening of the corresponding discharge port (34) and rotate to control the opening and closing of the discharge port (34).

3. The synchronous pouring device for trenching in a pipe jacking working shaft according to claim 2, characterized in that: The slurry box (31) is equipped with a buffer plate (4) that is slidably raised and lowered. The buffer plate (4) is provided with a reset component (41) for resetting the buffer plate (4) and an energy-consuming component (42) for consuming the impact energy received by the buffer plate (4). The reset component (41) and the energy-consuming component (42) are provided on the slurry box (31).

4. The synchronous pouring device for trenching in a pipe jacking working shaft according to claim 3, characterized in that: The slurry box (31) has a slurry control groove (43) through the side wall. The buffer plate (4) is provided with a slurry control rod (44) that extends from the slurry control groove (43) to the outside. The inner wall of the slurry control groove (43) is provided with a slurry clearance groove (431). The slurry control rod (44) is provided with a slurry sealing plate (441) that is inserted into the slurry clearance groove (431). The slurry sealing plate (441) is used to close the opening of the slurry control groove (43). The control plate (35) has a transmission gear (45) on its rotating shaft. The adjacent transmission gears (45) mesh with each other. The end of the slurry control rod (44) is provided with a transmission rod (46). The transmission rod (46) has a plurality of transmission grooves (461) for meshing with the transmission gears (45). The transmission rod (46) meshes with the adjacent transmission gears (45).

5. The synchronous pouring device for trenching in a pipe jacking working shaft according to claim 1, characterized in that: The buffer box (23) includes several box rings (6) distributed along the direction of concrete falling. The rotating groove (5) is opened on the box rings (6). A waterproof cloth (61) for sealing is provided between adjacent box rings (6). The same guide rod (62) passes through several box rings (6). The box rings (6) slide along the length direction of the guide rod (62). A top rod (63) for limiting the movement of adjacent box rings (6) is rotatably provided on the box rings (6). The top rod (63) is pressed against the inner wall of the rotating groove (5). The buffer baffle (53) slides back into the rotating groove (5) as a whole, causing the top rod (63) to rotate out from the inner wall of the rotating groove (5), releasing the limitation of adjacent top rods (63) on adjacent box rings (6). The slurry box (31) pushes the box rings (6) to stack together. The trigger plate (55) is also provided in the box rings (6) to trigger the buffer baffle (53) in the adjacent box rings (6).

6. A construction method using a synchronous pouring device for trenching of a pipe jacking working shaft according to claim 4, characterized in that, include: Dig a working well at the designated location, place the lifting drive (32) and the slurry box (31) at the bottom of the working well, and align the slurry conveying slide (33) with the feed port of the lowest casting mold; The concrete inside the pump truck enters the buffer assembly (2) through the grout delivery pipe (1), and after being buffered by the buffer assembly (2), it falls onto the buffer plate (4) of the grout distribution box (31). The buffer plate (4) is compressed and then descends, thereby driving the transmission rod (46) to descend, driving the transmission gear (45) to rotate, opening the control panel (35), and the concrete enters the grout delivery chute (33) and enters the casting mold. After the bottom casting mold is completed, the slurry box (31) is raised by the lifting drive (32) so that the slurry conveying slide (33) is aligned with the feed port of the upper casting mold for casting.

Images