Cast-in-place pile integrated hole cleaning and pouring device

Abstract

The utility model discloses a cast-in-place pile integrated hole cleaning and pouring device and relates to the technical field of pile foundation engineering. Comprising a crawler, a rotating seat and a chassis, and a slurry reel, a power reel, a slurry bin, a slurry pump and a hoisting mechanism are arranged on the chassis; the hoisting mechanism is arranged at the front end of the chassis and comprises a portal frame, a swing driving cylinder, a wheel disc, a guide wheel and a telescopic driving cylinder, the two ends of the swing driving cylinder are fixed to the chassis and the portal frame respectively, and the rotatable wheel disc is fixedly arranged at the top end of the portal frame; a telescopic driving cylinder is fixedly arranged on the portal frame below the wheel disc, and a rotatable guide wheel is fixedly arranged at the front section of the telescopic driving cylinder; according to the device, the two working procedures of hole cleaning and pouring are efficiently and rapidly achieved through the same device, meanwhile, the construction quality is effectively ensured through monitoring equipment, and the working intensity of constructors is relieved to a great extent.

Description

Technical Field

[0001] The utility model relates to the technical field of pile foundation engineering, in particular to an integrated device for hole cleaning and concrete pouring after bored pile drilling. Background Art

[0002] At present, after pile holes are drilled in pile foundation engineering, the hole cleaning and concrete pouring processes are two independent processes.

[0003] Among them, the hole cleaning operation methods include the pumping method, the slurry replacement method, the slag scooping method and the jet hole cleaning method.

[0004] The pumping method is applicable to column piles and friction piles formed by various drilling methods with stable hole walls. The hole is cleaned by sucking the slurry containing drill cuttings with a slag suction pump. This method requires lowering the slag suction pump to the bottom of the hole by a crane. The slag suction pump is connected to a slurry pipe, and the slurry is pumped out to the ground for filtration.

[0005] The slurry replacement method is applicable to the positive and reverse circulation rotary drilling rigs. After drilling is completed, the rig does not stop drilling or advance. The hole is cleaned by continuously circulating and replacing the slurry until the requirement for cleaning the slurry is met. It is applicable to friction piles in various soil layers. This method borrows the pipes and slurry pumps of the drilling rig itself to carry out the slurry circulation for hole cleaning operations.

[0006] The slag scooping method is applicable to pile holes drilled by impact, grab or rotary drilling. The coarse-grained drill cuttings at the bottom of the hole are removed by using a slag scooping bucket. This method uses a grab to grab large impurities at the bottom of the hole.

[0007] The jet hole cleaning method is applicable to the situation where concrete pouring equipment such as a conduit has been installed and the measured sediment thickness at the bottom of the hole exceeds the specified value. The sediment at the bottom of the hole is suspended and removed by jet pressure.

[0008] The concrete pouring operation method is: the conduit method is adopted, that is, a two-meter-long conduit is connected into the hole section by section by a crane until the bottom of the hole. A funnel is connected to the last section of the conduit, and concrete is poured into the hole through the funnel. This method requires a large amount of labor (3-4 people), has complex operations, high labor intensity, low operation safety, and low efficiency.

[0009] The above two processes need to use two sets of equipment respectively. First, the workload is large, and second, the project cycle is relatively long. At present, with the increasing shortage of human resources in the field of foundation construction, using the above hole cleaning and pouring methods for pile foundation construction requires a large amount of labor and high labor intensity. Since the above operations are all simple physical high-intensity labor, and the personal safety during the construction process cannot be guaranteed, a large amount of repeated disassembly and connection of steel pipes are required, and simple tools, simple methods and simple hoisting forms are used for labor operations. The construction efficiency cannot be guaranteed, and the construction quality cannot be monitored, all of which are affected by human factors.

[0010] How to design a device that can quickly, efficiently and continuously complete the two processes of bored pile hole cleaning and concrete pouring, and overcome the subjective factors in the manual construction process to avoid quality problems has become a technical problem that needs to be solved urgently in this field. Summary of the invention

[0011] In view of the above technical problems, the utility model provides an integrated hole cleaning and pouring device for bored piles, which can reduce the number of operators to the maximum and effectively realize the two processes of hole cleaning and pouring by the same device.

[0012] The technical solution of the utility model is: comprising a crawler vehicle, a rotating seat and a chassis, on which a mud reel, a power reel, a slurry bin, a slurry pump and a hoisting mechanism are arranged;

[0013] The hoisting mechanism is arranged at the front end of the chassis, and the hoisting mechanism comprises a gantry, a swing drive cylinder, a wheel disc, a guide wheel and a telescopic drive cylinder, the two ends of the swing drive cylinder are respectively fixed to the chassis and the gantry, a rotatable wheel disc is fixed on the top of the gantry, a telescopic drive cylinder is fixed on the gantry below the wheel disc, and a rotatable guide wheel is fixed on the front section of the telescopic drive cylinder;

[0014] The mud reel and the slurry bin are arranged in the middle of the chassis in sequence. A mud pipe is wound around the mud reel. One end of the mud pipe is connected to the slurry pump after passing through the wheel disc. The other end of the mud pipe is connected to the slurry bin.

[0015] A power pipeline is wound on the power reel; the power pipeline is connected to the slurry pump via the wheel disc.

[0016] Furthermore, the slurry bin is connected to the concrete bin through a pipeline.

[0017] Furthermore, the slurry bin is also provided with a slurry return pipe.

[0018] Furthermore, a mud concentration monitor is provided on the mud return pipe.

[0019] Furthermore, a filter is provided on the mud return pipe.

[0020] The utility model combines the two processes of hole cleaning and concrete pouring into one equipment. First, the slurry pump is used to realize the cyclic suction from bottom to top and from top to bottom in the pile hole, so as to completely clear the sediment at the bottom of the pile hole and the floating scum at the top. At the same time, the liquid level of the mud in the pile hole is maintained by mud reflux. Secondly, after the hole cleaning operation is completed, the slurry pump is removed, the inlet of the mud pipe is connected to the concrete bin, the outlet is lowered to the bottom of the hole, and concrete is evenly laid from bottom to top in the pile hole containing mud.

[0021] The utility model realizes the two processes of hole cleaning and pouring efficiently and quickly through the same device, and effectively ensures the construction quality through the monitoring equipment, greatly alleviating the working intensity of construction personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 is a working schematic diagram of the hole cleaning state of the utility model,

[0024] Figure 2 is a working schematic diagram of the pouring state of the utility model,

[0025] Figure 3 is a top view of the utility model.

[0026] In the figure:

[0027] 1 is the chassis, 11 is the crawler vehicle, 12 is the rotating seat, 2 is the mud reel, 3 is the power reel, 31 is the power pipeline, 4 is the mud pipe, 5 is the gantry, 51 is the swing drive cylinder, 52 is the wheel disc, 53 is the guide wheel, 54 is the telescopic drive cylinder, 6 is the slurry pump, 7 is the slurry bin, 71 is the mud return pipe, 72 is the filter, 73 is the mud concentration monitor, 8 is the concrete bin, 9 is the floating slag, 10 is the mud, 11 is the sediment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The following will further illustrate the technical solutions of the present invention in conjunction with the attached Figures 1-3 and through specific embodiments.

[0029] Among them, the drawings are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and cannot be understood as a limitation to this patent; in order to better illustrate the embodiments of the present invention, some components in the drawings will be omitted, enlarged or reduced, which does not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0030] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components; in the description of the present invention, it should be understood that if terms such as "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship, such orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the accompanying drawings are only for illustrative purposes and cannot be construed as a limitation on this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0031] In the description of the present invention, unless otherwise clearly specified and limited, if terms such as "connection" are used to indicate the connection relationship between components, this term should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] The utility model includes a crawler vehicle 11, a rotating seat 12 and a chassis 1. A mud reel 2, a power reel 3, a slurry bin 7, a slurry pump 6 and a hoisting mechanism are provided on the chassis 1;

[0033] The hoisting mechanism is arranged at the front end of the chassis 1. The hoisting mechanism includes a gantry 5, a swing drive cylinder 51, a wheel disc 52, a guide wheel 53 and a telescopic drive cylinder 54. Both ends of the swing drive cylinder 51 are respectively fixed on the chassis 1 and the gantry 5. A rotatable wheel disc 52 is fixedly provided at the top of the gantry 5. The telescopic drive cylinder 54 is fixedly arranged on the gantry 5 below the wheel disc 52. A rotatable guide wheel 53 is fixedly provided at the front section of the telescopic drive cylinder 54. The position of the nozzle of the mud pipe 4 can be adjusted during the pouring process through the telescopic drive cylinder 54, so that the concrete can be poured more evenly;

[0034] The mud reel 2 and the slurry bin 7 are arranged in sequence in the middle of the chassis 1. A mud pipe 4 is wound around the mud reel 2. One end of the mud pipe 4 is connected to the slurry pump 6 after passing through the wheel disc 52; the other end of the mud pipe 4 is connected to the slurry bin 7;

[0035] A power pipeline 21 is wound around the power reel 3; the power pipeline 21 is connected to the slurry pump 6 through the wheel disc 52.

[0036] Further, the slurry bin 7 is connected to a concrete bin 8 through a pipeline.

[0037] Furthermore, the slurry storage bin 7 is also provided with a slurry return pipe 71. During hole cleaning, the filtered slurry is discharged back into the pile hole through the slurry return pipe 71 until the slurry index such as specific gravity and sediment thickness meets the acceptance standards.

[0038] Furthermore, a slurry concentration monitor 73 is provided on the slurry return pipe 71 to monitor whether the slurry discharged back into the pile hole meets the acceptance standards.

[0039] Furthermore, a filter 72 is provided on the slurry return pipe 71 to process the slurry and sand and gravel generated during drilling. The sand and gravel in the slurry are filtered out through mechanical and physical methods to make the slurry purer.

[0040] Before construction, it is necessary to determine whether the pile hole to be operated is a dry pile hole or a wet pile hole for this equipment;

[0041] If it is a dry pile hole, hoist the steel reinforcement cage into the pile hole. After the installation of the steel reinforcement cage is completed, lower the slurry pipe 4 to the bottom of the hole, start the device, discharge the concrete in the concrete bin 8 into the slurry bin 7, and then carry out the concrete pouring construction until the concrete is poured to the hole opening.

[0042] If it is a wet pile hole, hole cleaning operation needs to be carried out first. The hole cleaning process is as follows: Connect the slurry pipe 4 to the slurry pump 6. Adjust the position of the guide wheel 53 through the telescopic drive cylinder 54 so that the slurry pump 6 is facing the pile hole. Lower the slurry pump 6 to the bottom of the pile hole through the lower part of the wheel disc 52, and then carry out cyclic operation from bottom to top and from top to bottom to suck the sediment 11, floating slag 9 and slurry 10 in the pile hole, and discharge them into the slurry bin 7 through the slurry pipe 4. The slurry in the slurry bin 7 is then discharged back into the pile hole through the slurry return pipe 71 after passing through the slurry concentration monitor 73 and the filter 72. If the slurry concentration monitor 73 monitors that the slurry index such as specific gravity and sediment thickness does not meet the acceptance standards, repeat the above process. If the slurry concentration monitor 73 monitors that the slurry index such as specific gravity and sediment thickness meets the acceptance standards, the hole cleaning is completed.

[0043] After the hole cleaning is completed, the pouring operation is started. Lift the slurry pipe 4 out of the pile hole until the slurry pump 6, remove the slurry pump 6, and then hoist the steel reinforcement cage into the pile hole. Lower the slurry pipe 4 to the bottom of the hole and start the device to discharge the concrete in the concrete bin 8 into the slurry bin 7 (or directly insert the slurry pipe 4 into the concrete bin 8), and then carry out the concrete pouring construction until the concrete is poured to the hole opening.

[0044] It should be noted that the above specific embodiments are only the preferred embodiments of the present invention and the technical principles applied. Those skilled in the art should understand that based on the technical content disclosed in this application document, various modifications, equivalent replacements, changes, etc. can be made to the present invention. However, as long as these transformations do not deviate from the spirit of the present invention, they should be within the protection scope of the present invention. In addition, some terms used in the specification and claims of this application are not restrictive, but are only for the convenience of description.

Claims

1. An integrated hole cleaning and pouring device for bored piles, comprising a crawler vehicle, a rotating seat and a chassis, characterized in that: A mud reel, a power reel, a slurry bin, a slurry pump and a hoisting mechanism are arranged on the chassis; The hoisting mechanism is arranged at the front end of the chassis, and the hoisting mechanism comprises a gantry, a swing drive cylinder, a wheel disc, a guide wheel and a telescopic drive cylinder, the two ends of the swing drive cylinder are respectively fixed to the chassis and the gantry, a rotatable wheel disc is fixedly arranged at the top of the gantry, a telescopic drive cylinder is fixedly arranged on the gantry below the wheel disc, and a rotatable guide wheel is fixedly arranged at the front section of the telescopic drive cylinder; The mud reel and the slurry bin are arranged in the middle of the chassis in sequence. A mud pipe is wound around the mud reel. One end of the mud pipe is connected to the slurry pump after passing through the wheel disc. The other end of the mud pipe is connected to the slurry bin. A power pipeline is wound on the power reel; the power pipeline is connected to the slurry pump via the wheel disc.

2. The integrated hole cleaning and pouring device for bored piles according to claim 1, characterized in that: The slurry bin is connected to the concrete bin through a pipeline.

3. The integrated hole cleaning and pouring device for bored piles according to claim 1 is characterized in that: The slurry bin is also provided with a slurry return pipe.

4. The integrated hole cleaning and pouring device for bored piles according to claim 3 is characterized in that: A mud concentration monitor is provided on the mud return pipe.

5. The integrated hole cleaning and pouring device for bored piles according to claim 3 is characterized in that: The mud return pipe is provided with a filter.

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