Pile head suction breaking mechanism of concrete pier and pile breaking vehicle

Abstract

The utility model provides a pile head suction breaking mechanism of a concrete bridge pier and a pile breaking vehicle, and relates to the field of pile breaking equipment. A lifting part comprises a support fixed on a rotary table, a lifting arm hinged to the support and a lifting drive; the telescopic part comprises a telescopic arm connected to the lifting arm and a telescopic drive; the lifting fine-adjustment part comprises a hanging bracket fixed at the tail end of the telescopic arm and a fine-adjustment lifting arm connected with the hanging bracket, the fine-adjustment lifting arm is hinged to the hanging bracket and connected with the hanging bracket through a telescopic cylinder, the two ends of the telescopic cylinder are hinged to the hanging bracket and the fine-adjustment lifting arm respectively, and one end of the fine-adjustment lifting arm is connected with the hanging bracket through an elastic element; the conveying pipe is loaded on the lifting arm, the telescopic arm and the fine adjustment lifting arm, one end of the conveying pipe is connected with the rotary table, and the other end is connected with the suction head; the telescopic arm and the fine adjustment lifting arm are provided with roller sets used for bearing the conveying pipe. According to the concrete pile head breaking device, the concrete pile head is broken through the suction effect by controlling the position of the suction head precisely.

Description

Technical Field

[0001] The utility model relates to the technical field of construction machinery, in particular to a pile head suction and breaking mechanism for a concrete pier and a pile breaking vehicle. Background Technique

[0002] At present, when pouring and casting concrete pier piles in engineering construction, the top elevation of the cast-in-place pile should be 0.8 - 2.0 m higher than the designed pile top elevation to ensure the strength of the pile head concrete. However, the pile head part higher than the designed pile top elevation must be chiseled off during the subsequent construction process. The work of chiseling off this part of the concrete pile head is pile head breaking.

[0003] Pile head breaking is usually carried out manually or mechanically to break the super-cast concrete at the pile top after the concrete has solidified. Although the speed of mechanical pile breaking is many times faster than that of manual work, there are serious environmental pollutions during the process of mechanical pile breaking and the process of dealing with the broken pile head. When lifting the broken pile head, it poses a great safety risk to construction workers.

[0004] In the prior art, the utility model patent with the publication number of CN212670568U discloses a pile head breaking device for before the initial setting of concrete, and proposes that after the casting of the cast-in-place pile is completed and before the concrete initial sets, the device is placed inside the super-cast part of the cast-in-place pile. When breaking, water or mud enters the conduit through the feed pipe and is sprayed out from the vertical spray pipe and the lateral spray pipe at the lower end of the conduit, so as to dilute and cut the concrete inside the pile head of the cast-in-place pile, and achieve the breaking of the pile head of the cast-in-place pile. However, the device still has the following problems during actual construction:

[0005] 1. When using this device, it is necessary to first insert it inside the super-cast part of the cast-in-place pile. Limited by the performance of concrete such as different setting times and slumps, especially for concrete with a low slump, it is very difficult to perform this insertion action, so it is difficult to carry out subsequent operations and the construction difficulty is great.

[0006] 2. This device uses the vertical spray pipe and the lateral spray pipe to jointly spray water or mud. However, when it is about 20 cm or more above the pile foundation elevation, this action is not applicable. The reason is that the water sprayed out from the vertical spray pipe is likely to damage the mix ratio of the pile foundation concrete, thereby affecting the strength of the pile foundation. Especially when spraying mud, it is more likely to affect the strength of the pile foundation. In addition, there is a certain distance between the nozzles of the vertical spray pipe and the lateral spray pipe in the horizontal direction, which is likely to cause a dead angle in the center of construction. Moreover, the spray pipe can wash away the ash and sand components in the concrete, but it is difficult to achieve the effect of scouring and breaking the stones in it. Therefore, the device cannot complete the complete breaking of the pile head.

[0007] 3. This device is only used for diluting and cutting the concrete around the nozzle. According to the construction requirements of the broken pile head, it is usually necessary to collect and transport the diluted and cut concrete. Therefore, it is necessary to configure corresponding collection and transportation devices, which is not conducive to the synchronous collection of the broken pile head construction and waste.

[0008] In the prior art, the patent document with announcement number CN210797698U discloses a vacuum excavator with an outrigger mechanism of a floating boom, which cooperates with high-speed water jet cutting and negative pressure suction to achieve precise suction excavation of solid compacted materials without large-scale damage to the road surface, and can also realize material collection.

[0009] However, the above structure is mainly aimed at the maintenance of urban underground pipe networks and municipal pipelines, and is more used to suck soil, backfill materials and other materials. However, if such a structure is used to suck concrete that has not yet solidified, there are the following shortcomings:

[0010] 1. When the pile head is being sucked, on the one hand, since the pile head is inside the foundation pit, which is about 1.5m in diameter, the excavation head has a small range of motion and basically does not require human intervention (only a remote control is required), so the floating arm structure is not suitable for pile breaking.

[0011] 2. Since materials such as concrete and mud are more viscous and less fluid than conventional ground-based materials, when applied to concrete that has not yet solidified, it is necessary to precisely adjust its up and down movement to complete the continuous suction of the concrete mud. However, the above-mentioned floating arm structure has low control accuracy over the height of the excavation head and cannot smoothly achieve continuous suction of the excavation head through negative pressure suction. Utility Model Content

[0012] The utility model aims at the above problems existing in the prior art and provides a pile head suction breaking mechanism for a concrete bridge pier and a pile breaking vehicle.

[0013] The technical solution of the utility model to solve the above technical problems is as follows:

[0014] On the one hand, the utility model provides a pile head suction and breaking mechanism for a concrete bridge pier, characterized in that it comprises a turntable, a lifting part, a telescopic part, a lifting fine-adjustment part, a conveying pipe and a suction head; wherein the lifting part comprises a bracket fixed on the turntable, a lifting arm hinged on the bracket and a lifting drive for driving the lifting arm to swing up and down;

[0015] The telescopic part includes a telescopic arm connected to the lifting arm and a telescopic drive for driving the telescopic arm to extend and retract;

[0016] The lifting and fine-tuning part includes a hanging bracket fixed at the end of the telescopic arm and a fine-tuning lifting arm connected to the hanging bracket. On the one hand, the fine-tuning lifting arm is hinged to the hanging bracket, and on the other hand, the fine-tuning lifting arm is connected to the hanging bracket through a telescopic cylinder. The two ends of the telescopic cylinder are respectively hinged to the hanging bracket and the fine-tuning lifting arm, and are used to drive the fine-tuning lifting arm to rotate around its hinge axis with the hanging bracket. The end of the fine-tuning lifting arm far from the telescopic cylinder is connected to the hanging bracket through an elastic element;

[0017] The conveying pipe is loaded on the lifting arm, the telescopic arm and the fine-tuning lifting arm, and one end of the conveying pipe is connected to the turntable, and the other end of the conveying pipe is connected to the suction head; roller groups for supporting the conveying pipe are arranged on the telescopic arm and the fine-tuning lifting arm;

[0018] The suction head includes a material suction head and a suction pipe with an output end connected to the input end of the conveying pipe. The material suction head is fixedly connected to the input end of the suction pipe, and the opening of the material suction head faces downward and is internally connected to the suction pipe and the conveying pipe.

[0019] Further, the fixed end of the telescopic arm is fixed to the lifting arm, and the telescopic end of the telescopic arm is fixed to the hanging bracket.

[0020] Further, the telescopic arm is composed of two split telescopic rods, and the two are parallel to each other, and a space for placing the conveying pipe is left between the two telescopic rods.

[0021] Further, a roller group for supporting the conveying pipe is arranged at the end of the fine-tuning lifting arm, and a limiting frame for the conveying pipe to pass through is formed between the roller group and the fine-tuning lifting arm.

[0022] Further, the conveying pipe is connected to the suction head through a rotary component, and the rotary component includes a sub-head and a mother-head. The sub-head is movably connected to the mother-head through a spherical structure and is internally connected.

[0023] Further, a notch is provided on the side wall of the material suction head near the material suction port. The design of the notch structure aims at the suction and removal of unhardened concrete and slurry-like materials to be suctioned such as in oil fields and sedimentation tanks. The design background is as follows: The conventional structure of the material suction head is generally a flat mouth (as disclosed in the patent document with the publication number CN210797699U) or a serrated mouth, that is, the above-mentioned notch structure is not provided. This type of structure has a good effect when used for suctioning ground soil base materials. However, when applied to unhardened concrete and slurry-like materials such as in oil fields and sedimentation tanks, the inventor found that since such materials are more viscous and less fluid than conventional ground soil base materials, when using the conventional flat mouth or serrated mouth material suction head structure for suction, the suction port is frequently blocked by the suctioned material, resulting in the inability to smoothly complete the suction. Therefore, the staff needs to frequently manually shift the material suction head to continue working, which seriously affects the suction effect and work efficiency; while using a material suction head with a notch structure can achieve a good suction effect for concrete-like materials.

[0024] Furthermore, the suction head further includes a high-pressure nozzle and a water supply pipeline communicated with the high-pressure nozzle. The high-pressure nozzle is fixedly connected to the outside of the material suction head, at the end side of the notch. The nozzle of the high-pressure nozzle protrudes downward from the material suction port at the bottom end of the material suction head, and the water spraying area of the high-pressure nozzle is located outside the notch.

[0025] Furthermore, one high-pressure nozzle is respectively arranged at both end sides of the notch. The nozzles of the two high-pressure nozzles are arranged oppositely, and the nozzles of the two high-pressure nozzles arranged oppositely at both end sides of the notch are arranged in a vertically staggered manner.

[0026] Further, the bottom of the high-pressure nozzle is of an inverted conical structure.

[0027] On the other hand, the utility model provides a pile-breaking vehicle, which includes a high-pressure water jet system, a pneumatic conveying system and a material storage system. The material storage system is communicated with the pneumatic conveying system. It is characterized in that it further includes the above-mentioned pile head suction and breaking mechanism, wherein the high-pressure water jet system is communicated with the water supply pipeline, and the input side of the pneumatic conveying system is communicated with the conveying pipe.

[0028] The beneficial effects of the utility model are as follows:

[0029] 1. By means of the lifting and fine-tuning part including a hanger and a fine-tuning lifting arm structure provided by the utility model, after the general position of the suction head is adjusted by the lifting arm, the rotation of the fine-tuning lifting arm is further controlled by the telescopic cylinder to accurately adjust the height of the suction head, greatly improving the accuracy of the position control of the suction head, so as to realize the breaking of the concrete pile head through the suction effect and meet the breaking working condition requirements in the concrete pile head.

[0030] 2. Further, by means of the material suction head with a notch structure provided by the utility model, in cooperation with the lifting part, the telescopic part, the lifting and fine-tuning part and the conveying pipe connected to the suction head, especially when breaking the unhardened concrete pile head, the slurry-like concrete can be smoothly sucked into the material suction port by using the air flow entrainment effect at the notch, solving the problem that when the flat material suction port of the existing technology is used for sucking the unhardened concrete, the material suction port is frequently blocked by the concrete due to the large viscosity of the concrete, resulting in the failure to smoothly complete the suction.

[0031] 3. The pile head breaking provided by the utility model also has the beneficial effects brought by the above-mentioned suction and breaking mechanism. Description of the Drawings

[0032] Figure 1 is a schematic structural diagram of the pile head suction and breaking mechanism of the utility model;

[0033] Figure 2 is a schematic structural diagram of the lifting and fine-tuning part of the utility model;

[0034] Figure 3 is a front view structural schematic diagram of the suction head of the present utility model;

[0035] Figure 4 is a sectional view structural schematic diagram of the suction head of the present utility model;

[0036] Figure 5 is a structural schematic diagram of the present utility model in the working state of the pile-breaking vehicle;

[0037] In the figure: 1. turntable, 2. lifting part, 21. bracket, 22. lifting arm, 23. lifting drive, 3. telescopic part, 31. telescopic arm, 32. telescopic drive, 4. lifting fine-tuning part, 41. hanging bracket, 411. hanging bracket one, 412. hanging bracket two, 413. hanging bracket three, 42. fine-tuning lifting arm, 43. telescopic cylinder, 44. elastic element, 5. conveying pipe, 6. suction head, 61. material suction head, 611. material suction port, 612. notch, 62. high-pressure nozzle, 621. nozzle, 63. water supply pipeline, 631. main pipeline, 632. intermediate pipeline, 633. branch pipeline, 64. material suction pipe, 7. rotary component, 71. sub-head, 72. mother head, 73. cover plate, 74. rotary seal ring, 81. first roller group, 82. second roller group, 83. third roller group, 84. fourth roller group. Detailed implementation manners

[0038] The principles and features of the present utility model will be described below. The illustrated embodiments are only used to explain the present utility model and are not intended to limit the scope of the present utility model.

[0039] As Figures 1-4 shown, a pile head suction and breaking mechanism for a concrete pier in this embodiment is characterized by including a turntable 1, a lifting part 2, a telescopic part 3, a lifting fine-tuning part 4, a conveying pipe 5 and a suction head 6; wherein,

[0040] The lifting part 2 includes a bracket 21 fixed on the turntable 1, a lifting arm 22 hinged on the bracket 21, and a lifting drive 23 for driving the swinging arm 22 to swing up and down; the lifting drive 23 in this embodiment adopts a hydraulic cylinder, and both ends of the lifting drive 23 are respectively hinged to the bracket 21 and the lifting arm 22. Under the action of the lifting drive 23, the lifting arm 22 can swing up and down around its hinge point with the bracket 21, thereby realizing the function of adjusting the lifting;

[0041] The telescopic part 3 includes a telescopic arm 31 connected to the lifting arm 22 and a telescopic drive 32 for driving the telescopic arm 31 to telescope; the telescopic drive 32 in this embodiment adopts a hydraulic cylinder, and both ends of the telescopic drive 32 are respectively hinged to the telescopic end of the telescopic arm 31 and the lifting arm 22. Under the action of the telescopic drive 32, the telescopic end of the telescopic arm 31 can telescope back and forth relative to its fixed end;

[0042] The lifting and fine-tuning part 4 includes a suspension bracket 41 fixed to the end of the telescopic arm 31 and a fine-tuning lifting arm 42 connected to the suspension bracket 41. The end of the fine-tuning lifting arm 42 is used to guide the conveying pipe 5 led out therefrom, so that the horizontally arranged conveying pipe 5 extends out from the end of the fine-tuning lifting arm 42 and bends downward. Specifically, the suspension bracket 41 includes a suspension bracket one 411, a suspension bracket two 412, and a suspension bracket three 413 that are fixedly connected. The middle and rear part of the fine-tuning lifting arm 42 is hinged to the suspension bracket two 412, and the middle and front part of the fine-tuning lifting arm 42 is connected to the suspension bracket three 413 through a telescopic cylinder 43. The two ends of the telescopic cylinder 43 are respectively hinged to the suspension bracket three 413 and the fine-tuning lifting arm 42, and is used to drive the fine-tuning lifting arm 42 to rotate around its hinge axis with the suspension bracket two 412. The rear end of the fine-tuning lifting arm 42, that is, the end far from the telescopic cylinder 43, is connected to the suspension bracket one 411 through an elastic element 44. In this embodiment, the telescopic cylinder 43 adopts an electric push rod structure, and the elastic element adopts a gas spring.

[0043] The conveying pipe 5 is loaded on the lifting arm 22, the telescopic arm 31 and the fine-tuning lifting arm 42, and one end of the conveying pipe 5 is connected to the turntable 1, and the other end of the conveying pipe 5 is connected to the suction head 6. Roller groups for supporting the conveying pipe 5 are arranged on the telescopic arm 31 and the fine-tuning lifting arm 42, including a first roller group 81 installed at the fixed end of the telescopic arm 31, a second roller group 82 installed at the telescopic end of the telescopic arm 31, a third roller group 83 installed in the middle of the fine-tuning lifting arm 42, and a fourth roller group 84 installed at the lower end of the fine-tuning lifting arm 43. A limiting frame 421 for the conveying pipe 5 to pass through is formed between the fourth roller group 84 and the lifting arm 42.

[0044] The suction head 6 includes a material suction head 61 and a material suction pipe 64 whose output end is connected to the input end of the conveying pipe 5. The material suction head 61 is fixedly connected to the input end of the material suction pipe 64. The opening of the material suction head 61 faces downward and is internally connected to the material suction pipe 64 and the conveying pipe 5. The conveying pipe 5 is externally connected to a negative pressure mechanism.

[0045] This embodiment is used for the suction and removal of the pile head of a concrete pier. It is applied when the concrete pouring is completed, the cement slurry backflow ends, impurities fall into the pile head, and the pile head has not yet solidified. The pile head suction and removal mechanism is controlled to perform the pile head removal operation. Specifically, the lifting arm 22 is operated to swing, and the telescopic arm 31 is telescoped so that the suction head stops above the pile head in the foundation pit. By operating the telescopic cylinder 43, the fine-tuning lifting arm 42 rotates around its hinge axis with the second hanger 412, and the end of the fine-tuning lifting arm 42 slowly moves downward to precisely adjust the heights of the conveying pipe 5 and the suction head 6, so that the suction head 61 just contacts or inserts into a certain depth into the slurry-concrete mixture at the pile top. At this time, the negative pressure mechanism is operated to suck and discharge the slurry-concrete mixture, completing the removal of the pile head and the collection of materials. This solution can improve the accuracy of adjusting the height of the end suction head through the provided lifting and fine-tuning part 4 to be applicable to the continuous suction and pile head removal of concrete.

[0046] In a preferred embodiment of the present utility model, the suction head 61 has a horn-shaped structure. The horn-shaped structure increases the suction range of the suction port under the condition that the diameter of the suction pipe 1 is constant. There are openings 612 provided on the side wall of the suction head 61, near the suction port 611. In this embodiment, there are two opposite openings, and the opening 612 is arched or square-arch-shaped. When the negative pressure suction is started, the design of the opening 612 structure enables the air flow to pass through the opening 612 at a high speed, forming an air flow entrainment effect, which is beneficial to smoothly sucking the material into the suction port through the opening 612. If the suction head structure with the opening 612 is replaced with a suction head 61 structure with a flat mouth or a serrated mouth, when facing the suction of concrete, the concrete will block the suction port due to the viscosity of the concrete, and the suction cannot be smoothly completed. Therefore, the advantage of this solution is that under the action of negative pressure suction, the air flow passes through the opening 612 at a high speed. Due to the entrainment effect of the air flow, it is beneficial to smoothly suck the material into the suction port 611, effectively solving the problem that the suction effect is affected because the concrete blocks the suction port due to the large viscosity of the concrete when using a flat-type suction port to perform the suction operation on the non-solidified concrete.

[0047] In another preferred embodiment of the present utility model, the suction head 6 further includes a high-pressure nozzle 62 and a water supply pipeline 63 communicating with the high-pressure nozzle 62. The high-pressure nozzle 4 can adopt a fan-shaped nozzle structure or a columnar nozzle structure. The high-pressure nozzle 62 is fixedly connected to the outside of the material suction head 61, at the end side of the notch 612. The nozzle of the high-pressure nozzle 62 protrudes downward from the bottom suction port of the material suction head 61. The water spraying area of the high-pressure nozzle 62 is located outside the notch, aiming to cut and break the materials outside the notch by using high-pressure water flow. The advantage of this solution is that when the concrete solidifies and caking to a certain extent, resulting in poor fluidity and suspension, making it difficult for the material suction head to suck, the control valve of the water supply pipeline 63 is started and opened, so that the high-pressure water is sprayed out from the water supply pipeline 63 through the high-pressure nozzle 62, and the high-pressure water flow cutting is carried out on the materials outside the notch 612 to break the adhered materials, enabling the materials to be smoothly sucked into the material suction head through the notch 612.

[0048] In another preferred embodiment of the present utility model, a high-pressure nozzle 62 is respectively arranged at both end sides of the notch 612. The nozzles of the two high-pressure nozzles 62 are arranged oppositely, and the nozzles of the two high-pressure nozzles 62 arranged oppositely at both end sides of the notch 612 are arranged in a vertically staggered manner, as shown in Figure 3 shown. The advantage is that the high-pressure water cutting is carried out simultaneously from different depths, which is more conducive to cutting the concrete block. Correspondingly, the water supply pipeline 63 includes a main pipeline 631, an intermediate pipeline 632 and a branch pipeline 633 which are connected in sequence; the main pipeline 631 is fixed on the outer wall of the suction pipe 64, the intermediate pipeline 632 is of an annular channel structure and is fixed at the connection between the suction pipe 64 and the suction head 61, and the branch pipeline 633 is fixed on the outer wall of the suction head 61. Each high-pressure nozzle 62 is respectively connected to a branch pipeline 633.

[0049] On the basis of the above embodiments, in a preferred embodiment of the present utility model, the telescopic arm 31 is two split telescopic rods, and the two are parallel to each other. A space for placing the conveying pipe 5 is left between the two telescopic rods, and the first roller group 81 is installed on the two telescopic arms 31. The first roller group 81 includes two layers of rollers, which are respectively located on the upper and lower sides of the conveying pipe 5. The structure is more compact, and the conveying pipe is more stable therein.

[0050] In a preferred embodiment of the present utility model, the conveying pipe 5 is connected to the suction head 6 through a rotary member 7. Specifically, the rotary member 7 includes a sub-head 71 and a mother head 72. The sub-head 71 is connected to the conveying pipe 5, and the mother head 72 is connected to the suction head 6. The end of the mother head 72 is provided with a flange, and two rotary sealing rings 74 are placed in the inner hole. One rotary sealing ring 74 is limited by a boss in the mother head 72, and the other rotary sealing ring 74 is limited by a cover plate 73 bolted to the flange of the mother head 72. The cover plate 73 is a flange with a boss on one side. The sub-head 71 is placed into the mother head through a spherical structure and is movably connected to the mother head 72 through the rotary sealing ring 74. The interiors of the sub-head 71 and the mother head 72 are connected and communicate with each other. The advantage is that when the sub-head 71 is fixed, the mother head 72 can rotate around the sub-head 71 and can swing within a certain range, so that the suction head 6 can better adapt to the situation of the concrete pile head and achieve smooth suction.

[0051] In another embodiment of the present utility model, a pile-breaking vehicle is provided for breaking the pile head of a concrete bridge pier. It includes a high-pressure water jet system 91, a pneumatic conveying system 92, a storage system 93, and the pile head suction and breaking mechanism described in the above embodiment. Among them, the high-pressure water jet system 91, the pneumatic conveying system 92, and the storage system 93 are the same as the high-pressure water jet system, the pneumatic conveying system, and the storage system disclosed in the patent document with the publication number CN210797700U. The storage system 93 is communicated with the pneumatic conveying system 92, the high-pressure water jet system 91 is communicated with the water supply pipeline 63, and the input side of the pneumatic conveying system 92 is communicated with the conveying pipe 5. Its working mode is as follows:

[0052] At the construction site of bored cast-in-place concrete pier piles, after the concrete pouring is completed, when the cement slurry backflow ends and impurities fall into the pile head, when the pile head has not yet set, drive the pile-breaking vehicle to the site and park it in a position convenient for operation. Operate the turntable 1 of the pile-breaking vehicle to rotate through the remote control, connect the suction head 6 to the rotary component 7, connect the water supply pipeline 63 to the high-pressure water pipe of the high-pressure water jet system 91, control the rotation of the turntable 1, the swing of the lifting arm 22, and the telescoping of the telescopic arm 31, so that the suction head 6 stops above the pile head in the foundation pit. Operate the telescopic cylinder 43 to make the fine-tuning lifting arm 42 rotate around its hinge axis with the mounting frame two 412, and make the end of the fine-tuning lifting arm 42 slowly move downward, so that the suction head 61 of the suction head 6 just contacts or inserts into a certain depth the slurry-concrete mixture on the pile top. At this time, operate the pneumatic conveying system 92 to suck the slurry-concrete mixture into the storage system 93. Since there are slits on both sides of the suction head 61, at this time, the air flow passes through the slits at high speed. Due to the entrainment effect of the air flow, the slurry-concrete mixture on the pile top is quickly sucked into the storage system 93. If the fluidity and suspension of the material become poor due to adhesion, making it difficult to suck, then turn on the water pump and water valve in the high-pressure water jet system 91, so that the high-pressure water is ejected from the high-pressure nozzle 14 of the suction head 6, breaking the adhered material, and gradually sucking all the concrete above the pile head into the storage system 93. When the operation is completed, drive the pile-breaking vehicle to the location for concrete recycling, and pour the slurry-concrete mixture in the storage system 93 to the recycling location for screening and reuse.

[0053] The above-mentioned pile head suction and breaking mechanism and pile-breaking vehicle for concrete piers can break the pile head of concrete piers in advance. The pile head suction and breaking mechanism has a faster suction operation speed compared with the traditional suction head, and compared with the floating boom telescopic arm mechanism in the prior art, the micro-motion boom set on the pile-breaking vehicle makes the up and down movement of the suction head more accurate and efficient; when the pile-breaking vehicle is performing pile-breaking operations, there is no dust; it also avoids the safety risks to construction workers when lifting and breaking the pile head in traditional pile-breaking operations; at the same time, the sand and gravel in the concrete sucked by the pile-breaking vehicle can be screened and recycled, greatly reducing the cost in construction.

[0054] In addition to being applied to the suction and breaking of the above-mentioned non-set concrete, the suction and breaking mechanism described in this case can also be applied to the suction and removal of slurry-like materials in working conditions such as oil fields and sedimentation tanks.

Claims

1. A pile head suction and breaking mechanism for a concrete bridge pier, characterized in that: It comprises a turntable (1), a lifting part (2), a telescopic part (3), a lifting fine-adjustment part (4), a conveying pipe (5) and a suction head (6); wherein: The lifting part (2) comprises a bracket (21) fixed on the turntable (1), a lifting arm (22) hinged on the bracket (21), and a lifting drive (23) for driving the lifting arm (22) to swing up and down; The telescopic part (3) comprises a telescopic arm (31) connected to the lifting arm (22) and a telescopic drive (32) for driving the telescopic arm (31) to extend and retract; The lifting fine-adjusting part (4) comprises a hanger (41) fixed at the end of the telescopic arm (31) and a fine-adjusting lifting arm (42) connected to the hanger (41); the fine-adjusting lifting arm (42) is hingedly connected to the hanger (41) on one hand, and is connected to the hanger (41) through a telescopic cylinder (43) on the other hand, wherein the two ends of the telescopic cylinder (43) are respectively hingedly connected to the hanger (41) and the fine-adjusting lifting arm (42), and are used to drive the fine-adjusting lifting arm (42) to rotate around the hinge axis between the fine-adjusting lifting arm (42) and the hanger (41); and the end of the fine-adjusting lifting arm (42) away from the telescopic cylinder (43) is connected to the hanger (41) through an elastic element (44); The conveying pipe (5) is loaded on the lifting arm (22), the telescopic arm (31) and the fine-adjusting lifting arm (42), and one end of the conveying pipe (5) is connected to the turntable (1), and the other end of the conveying pipe (5) is connected to the suction head (6); the telescopic arm (31) and the fine-adjusting lifting arm (42) are provided with a roller group for supporting the conveying pipe (5); The suction head (6) comprises a suction head (61) and a suction pipe (64) whose output end is connected to the input end of the conveying pipe (5); the suction head (61) is fixedly connected to the input end of the suction pipe (64); the suction head (61) opens downward and is in communication with the suction pipe (64) and the interior of the conveying pipe (5).

2. The pile head suction and breaking mechanism for concrete bridge piers according to claim 1 is characterized in that: The fixed end of the telescopic arm (31) is fixed to the lifting arm (22), and the telescopic end of the telescopic arm (31) is fixed to the hanger (41).

3. The pile head suction and breaking mechanism for concrete bridge piers according to claim 1, characterized in that: The telescopic arm (31) is composed of two separate telescopic rods which are parallel to each other, and a space for accommodating the conveying pipe (5) is reserved between the two telescopic rods.

4. The pile head suction and breaking mechanism for concrete bridge piers according to claim 1, characterized in that: A roller group for supporting the conveying pipe (5) is arranged at the end of the fine-adjusting lifting arm (42), and a limiting frame (421) for the conveying pipe (5) to pass through is formed between the roller group and the fine-adjusting lifting arm (42).

5. The pile head suction and breaking mechanism for concrete bridge piers according to claim 1, characterized in that: The delivery tube (5) is connected to the suction head (6) via a rotating component (7); the rotating component (7) comprises a sub-head (71) and a female head (72); the sub-head (71) is movably connected to the female head (72) via a spherical structure and is internally connected.

6. The pile head suction and breaking mechanism for concrete bridge piers according to claim 1, characterized in that: A notch (612) is provided on the side wall of the suction head (61) near the suction port (611).

7. The pile head suction and breaking mechanism for concrete bridge piers according to claim 6, characterized in that: The suction head (6) further comprises a high-pressure nozzle (62) and a water supply pipeline (63) connected to the high-pressure nozzle (62); the high-pressure nozzle (62) is fixedly connected to the outside of the suction head (61) and is located at the end side of the notch (612); the nozzle of the high-pressure nozzle (62) protrudes downward from the suction port at the bottom end of the suction head (61); and the water spraying area of ​​the high-pressure nozzle (62) is located outside the notch.

8. The pile head suction and breaking mechanism for concrete bridge piers according to claim 7, characterized in that: A high-pressure nozzle (62) is respectively arranged at both ends of the notch (612), and the nozzles of the two high-pressure nozzles (62) are arranged opposite to each other, and the nozzles of the two high-pressure nozzles (62) arranged opposite to each other at the two ends of the notch (612) are arranged in an up-and-down staggered manner.

9. The pile head suction and breaking mechanism for concrete bridge piers according to claim 7, characterized in that: The bottom of the high-pressure nozzle (62) is in an inverted cone structure.

10. A pile-breaking vehicle, comprising a high-pressure water jet system (91), a pneumatic conveying system (92) and a material storage system (93), wherein the material storage system (93) is connected to the pneumatic conveying system (92), and characterized in that: It also comprises the pile head suction and breaking mechanism as claimed in any one of claims 1 to 9, wherein the high-pressure water jet system (91) is connected to the water supply pipeline, and the input side of the pneumatic conveying system (92) is connected to the conveying pipe (5).

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