A multi-power-head pressurized mixing pile machine, a multi-power-head pressurized hydraulic system and a control method

Abstract

The application provides a multi-power-head pressurizing mixing pile machine, a multi-power-head pressurizing hydraulic system and a control method. The mixing pile machine comprises a pressurizing winch arranged on a machine body platform; a stand column assembly for mixing construction, which comprises a stand column and at least two mixing power heads; the top of the mixing power head is provided with a first pressurizing pulley block and a second pressurizing pulley block; a direction-changing pulley block arranged on the machine body platform; a fixed pulley block arranged on the side of the machine body platform; a first steel wire rope, one end of which is fixed on the pressurizing winch, the other end of which is wound around the direction-changing pulley block, then is wound around the first pressurizing pulley block of one of the mixing power heads, then is wound around the second pressurizing pulley block of the mixing power head, then is downwardly wound around the fixed pulley block, then the first steel wire rope extends upwardly from the fixed pulley block, then is wound around the first pressurizing pulley block of the other mixing power head, then is wound around the second pressurizing pulley block of the mixing power head, and then is downwardly fixed on the machine body platform. The application enables one set of pressurizing winch to pressurize multiple power heads.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pile driving machinery, in particular to a multi-power-head pressurized mixing pile machine, a multi-power-head pressurized hydraulic system and a control method. BACKGROUND

[0002] The present multi-power-head pile frame uses one set of pressurized winch to control one set of power head, and if there are multiple sets of power heads, multiple sets of pressurized winches are needed. Therefore, the existing device has the defects of large floor area, complicated control and operation, and high cost.

[0003] Therefore, there is an urgent need for a multi-power-head pressurized mixing pile machine, a multi-power-head pressurized hydraulic system and a control method, so that one set of pressurized winch can pressurize multiple power heads. SUMMARY

[0004] The purpose of the present application is to provide a multi-power-head pressurized mixing pile machine, a multi-power-head pressurized hydraulic system and a control method, which aims to solve the technical problems of large floor area and complicated structure and operation in the traditional multi-power-head pile frame, in which each power head is matched with one pressurized winch.

[0005] To achieve the above-mentioned purpose, in a first aspect, the present application provides a multi-power-head pressurized mixing pile machine, comprising:

[0006] a pressurized winch arranged on a machine body platform;

[0007] a column assembly arranged on the machine body platform and used for mixing construction, which comprises a column and at least two mixing power heads slidably arranged on the column;

[0008] the top of each mixing power head is provided with a first pressurized pulley block and a second pressurized pulley block;

[0009] a change direction pulley block arranged on the machine body platform and adjacent to the column;

[0010] a fixed pulley block arranged on the side of the machine body platform and adjacent to the column;

[0011] a first steel wire rope, one end of which is fixed on and operatively wound on the pressurized winch, and the other end of which extends out of the pressurized winch, passes through the change direction pulley block, passes through the first pressurized pulley block and the second pressurized pulley block of one mixing power head, and then passes through the fixed pulley block, and then the first steel wire rope extends upwards from the fixed pulley block, passes through the first pressurized pulley block and the second pressurized pulley block of the other mixing power head, and then extends downwards and is fixed to the machine body platform.

[0012] As a further improvement of the above-mentioned scheme, the multi-ram pressurized mixing pile machine further comprises a number of ram winches matched with the number of the mixing rams, the ram winches are arranged on the platform of the machine body in intervals; and each mixing ram is driven to move up and down by a second steel wire rope.

[0013] As a further improvement of the above-mentioned scheme, the multi-ram pressurized mixing pile machine further comprises a support inclined rod, one end of the support inclined rod is hinged to the platform of the machine body, and the other end of the support inclined rod is hinged to the vertical column.

[0014] In the second aspect, the present application further provides a multi-ram pressurized hydraulic system of the multi-ram pressurized mixing pile machine, comprising a plunger pump, a multi-connection electric proportional multi-way valve connected with the plunger pump, and a pressurization control module and at least two ram winch control modules connected with the multi-connection electric proportional multi-way valve.

[0015] The multi-connection electric proportional multi-way valve comprises a pressurization reversing valve and at least two ram reversing valves matched with the ram winch control modules; the pressurization reversing valve comprises a pressurization reversing valve body and a first proportional electromagnet and a second proportional electromagnet arranged at two ends of the pressurization reversing valve body respectively, the pressurization reversing valve body is driven to reverse by controlling the power-on and power-off of the corresponding proportional electromagnet to realize the forward rotation or the reverse rotation of the pressurization control module.

[0016] The ram reversing valve comprises a ram reversing valve body and a third proportional electromagnet and a fourth proportional electromagnet arranged at two ends of the ram reversing valve body respectively, the ram reversing valve is driven to reverse by controlling the power-on and power-off of the corresponding proportional electromagnet to realize the forward rotation or the reverse rotation of the ram winch control module.

[0017] The pressurization control module comprises a pressurization winch hydraulic motor and a floating electromagnetic valve arranged in parallel with the pressurization winch hydraulic motor, the floating electromagnetic valve is used to control the communication or disconnection of the two working oil ports of the pressurization winch hydraulic motor.

[0018] As a further improvement of the above-mentioned scheme, the multi-connection electric proportional multi-way valve further comprises an electric proportional overflow valve used to adjust the pressurization pressure of the pressurization winch.

[0019] In the third aspect, the present application further provides a control method of the multi-ram pressurized mixing pile machine, comprising the multi-ram pressurized hydraulic system of the multi-ram pressurized mixing pile machine provided in the second aspect, and the steps of the control method comprise:

[0020] S1: when any one of the ram winches needs to perform the up-mixing-ram action, the fourth proportional electromagnet of the multi-connection electric proportional multi-way valve is powered on, the floating electromagnetic valve of the pressurization control module is powered on, the two working oil ports of the pressurization winch hydraulic motor are communicated, and the pressurization winch performs the rope-out action following the up-mixing-ram action of any one of the ram winches;

[0021] S2: when any one power head winch needs to do the down-put stirring power head action, the third proportional solenoid on the multi-connection electric proportional multi-way valve is powered on, the first proportional solenoid is powered on, and the pressure winch follows the down-put action of any one power head winch to carry out the rope-receiving and pressure-increasing action;

[0022] In the pressure-increasing process, when the pressure on any one stirring power head is less than the first pressure-increasing preset value, the electric proportional overflow valve is powered on, and the initial pressure value thereof is set to AMPa, the pressure on the stirring power head is continuously increased, and the pressure value of the electric proportional overflow valve is gradually adjusted until the pressure on the stirring power head is greater than the first pressure-increasing preset value and less than the second pressure-increasing preset value.

[0023] As a further improvement of the above scheme, in step S2, when the pressure value of the electric proportional overflow valve is gradually adjusted, if the pressure on the stirring power head is less than the first pressure-increasing preset value at the initial pressure value AMPa, the initial pressure value AMPa is increased by BMPa, and it is judged whether the pressure on the stirring power head is greater than the first pressure-increasing preset value,

[0024] If it is greater than the first pressure-increasing preset value, the electric proportional overflow valve maintains the current set pressure value,

[0025] If it is still less than the first pressure-increasing preset value, the set pressure value of the electric proportional overflow valve is adjusted to (A+nB) MPa, where n is a non-zero positive integer greater than 1, until the pressure on the stirring power head is greater than the first pressure-increasing preset value.

[0026] As a further improvement of the above scheme, when the pressure value of the electric proportional overflow valve is gradually adjusted, if the pressure on the stirring power head is greater than the second pressure-increasing preset value, the set pressure value of the electric proportional overflow valve is adjusted to (A+(n-1)B) MPa.

[0027] As a further improvement of the above scheme, the control method further comprises step S0,

[0028] S0: when all power head winches do not act, the pressure winch is controlled alone, the first proportional solenoid is powered on, the pressure winch receives the first steel wire rope, and the second proportional solenoid is powered on, the pressure winch releases the first steel wire rope.

[0029] Due to the above technical scheme, the application has the following beneficial effects:

[0030] 1. The present application provides a kind of multi-power head pressurized mixing pile machine, by setting the direction-changing pulley group and fixed pulley group on the machine platform, only need to set one pressurized winch, first steel wire rope from the pressurized winch extends, after passing through the direction-changing pulley group, then after passing through the first pressurized pulley group of one mixing power head, then after passing through the second pressurized pulley group, then downwardly passing through the fixed pulley group, then first steel wire rope extends upwardly from the fixed pulley group, then after passing through the first pressurized pulley group of next mixing power head, then after passing through the second pressurized pulley group, downwardly extends and is fixed with the machine platform, such setting, only need to set one pressurized winch to pressurize multiple mixing power heads, without needing to configure one pressurized winch for each mixing power head, not only saves the space on the machine platform, but also reduces equipment cost;Meanwhile, the whole structure is simple, easy to install and operate.

[0031] 2. The present application also provides a kind of control method of multi-power head pressurized mixing pile machine, when any one power head winch needs to do up-mixing power head action, fourth proportional electromagnet on multi-connected electric proportional multi-way valve is powered, floating solenoid valve of pressurized control module is powered, two working oil ports of pressurized winch hydraulic motor are communicated, pressurized winch follows the up-mixing action of any one power head winch to carry out rope-out action;When any one power head winch needs to do down-mixing power head action, third proportional electromagnet on multi-connected electric proportional multi-way valve is powered, first proportional electromagnet is powered, pressurized winch follows the down-mixing action of any one power head winch to carry out rope-in pressurized action, while in the process of pressurization, set pressure value of control electric proportional overflow valve is adjusted to control pressurization pressure;Such setting, can effectively realize the function of one set of pressurized winch driving multiple mixing power heads, and operation control is simple, construction efficiency is high;Meanwhile, since floating solenoid valve is also provided on the pressurized control module, when any one power head winch up-mixing power head, floating solenoid valve is powered, two working oil ports of pressurized winch hydraulic motor are communicated, so that pressurized winch follows the up-mixing of any one power head winch to carry out rope-out action, on the basis of realizing one-to-many, it will not affect the up-mixing operation of each power head winch, and there is no need for complex switching operation, only need to control floating solenoid valve to be powered or not. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only show some embodiments of the present application, and those skilled in the art can also obtain other drawings from the structures shown in these drawings without creating any inventive labor.

[0033] Figure 1A front view schematic diagram of a multi-power head pressurized mixing pile machine provided by the present application is provided.

[0034] Figure 2 A side view schematic diagram of a multi-power head pressurized mixing pile machine provided by the present application is provided.

[0035] Figure 3 A first steel wire rope winding schematic diagram of a multi-power head pressurized mixing pile machine provided by the present application is provided.

[0036] Figure 4 A principle schematic diagram of a multi-power head pressurized hydraulic system of a multi-power head pressurized mixing pile machine provided by the present application is provided.

[0037] Figure 5 A multi-power head pressurized control method flow schematic diagram provided by the present application is provided.

[0038] Reference signs:

[0039] 1, pressurized winch; 2, machine body platform; 3, stand column assembly; 4, mixing power head; 41, first pressurized pulley block; 42, second pressurized pulley block; 5, direction-changing pulley block; 6, fixed pulley block; 7, first steel wire rope; 8, power head winch; 81, second steel wire rope; 9, support inclined rod; 10, goose head.

[0040] 01, plunger pump; 02, multi-connection electric proportional multi-way valve; 021, pressurized reversing valve; 022, power head reversing valve; 023, pressurized reversing valve body; 024, first proportional electromagnet; 025, second proportional electromagnet; 026, power head reversing valve body; 027, third proportional electromagnet; 028, fourth proportional electromagnet; 03, pressurized control module; 031, pressurized winch hydraulic motor; 032, floating electromagnetic valve; 04, power head winch control module; 05, electric proportional overflow valve.

[0041] The implementation, functional features and advantages of the present application will be further described in combination with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0043] It should be noted that all directional indications, such as up, down, etc., in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications will also change accordingly.

[0044] In addition, the description such as "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one of the features.

[0045] In addition, the technical solutions of various embodiments of the present application can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, also not within the protection scope required by the present application.

[0046] Example 1

[0047] Referring to Figures 1-3 The present application provides a multi-power head pressurized mixing pile machine, comprising:

[0048] A pressurized winch 1 is arranged on the machine body platform 2;

[0049] A column assembly 3 is arranged on the machine body platform 2 for mixing construction, which comprises a column and at least two mixing power heads 4 slidably arranged on the column, in the embodiment, referring to Figure 1 and Figure, two mixing power heads 4 are arranged, and each mixing power head 4 is respectively provided with a power head winch 8, the power head winch 8 is arranged on the machine body platform 2, and each mixing power head 4 is driven to move up and down by the second steel wire rope 81 passing through the pulley arranged on the goose head 10;

[0050] The top of the mixing power head 4 is respectively provided with a first pressurized pulley set 41 and a second pressurized pulley set 42;

[0051] A change direction pulley set 5 is arranged on the machine body platform 2 and adjacent to the column;

[0052] A fixed pulley set 6 is arranged on the side of the machine body platform 2 and adjacent to the column;

[0053] The first steel wire rope 7 is fixed at one end of the pressurizing winch 1 and is operable to be wound on the pressurizing winch 1, and the other end of the first steel wire rope 7 extends out of the pressurizing winch 1, passes through the variable direction pulley block 5, passes through the first pressurizing pulley block 41 and the second pressurizing pulley block 42 of one of the stirring power heads 4, passes through the fixed pulley block 6, and then extends out of the fixed pulley block 6, passes through the first pressurizing pulley block 41 and the second pressurizing pulley block 42 of the other stirring power head 4, and is fixed to the machine body platform 2.

[0054] In the present application, when the stirring power head 4 needs to be connected with a drill rod, the stirring power head 4 needs to be first lowered, and after the rod is connected, the corresponding power head winch 8 is controlled to drive the stirring power head 4 to rise to a second predetermined position through the second steel wire rope 81, and then the stirring power head 4 is gradually lowered through the well mouth to perform stirring operation. When the stirring power head 4 needs to be pressurized, the pressurizing winch 1 is started, the first steel wire rope 7 is reeled in by the pressurizing winch 1, the first steel wire rope 7 extending out of the pressurizing winch 1 passes through the variable direction pulley block 5 and the fixed pulley block 6, and then passes through the first pressurizing pulley block 41 and the second pressurizing pulley block 42 of one of the stirring power heads 4, and then passes through the fixed pulley block 6, and then extends out of the fixed pulley block 6, passes through the first pressurizing pulley block 41 and the second pressurizing pulley block 42 of the other stirring power head 4, and is fixed to the machine body platform 2. In this way, only one pressurizing winch 1 is needed to pressurize multiple stirring power heads 4, and each stirring power head 4 does not need to be provided with a pressurizing winch 1, which not only saves the space on the machine body platform 2, but also reduces the cost of the equipment. Meanwhile, the whole structure is simple and easy to install and operate.

[0055] As a preferred embodiment, the multi-power-head pressurized stirring pile machine further comprises a support inclined rod 9, one end of the support inclined rod 9 is hinged to the machine body platform 2, and the other end of the support inclined rod 9 is hinged to the stand column, and the axis of the support inclined rod 9 and the plane of the machine body platform 2 form a preset inclination angle. Specifically, the support inclined rod 9 comprises a support rod body and a support oil cylinder connected to the support rod body, one end of the support rod body is hinged to the stand column, the other end of the support rod body is connected to the support oil cylinder away from the telescopic end, and the telescopic end of the support oil cylinder is hinged to the machine body platform 2. The support inclined rod 9 provides stable support for the stand column and improves the stability of the multi-power-head support.

[0056] It should be noted that, referring to Figure 2, a plurality of stirring power heads 4 are located on different sides of the column, each of the stirring power heads 4 can move vertically up and down on the corresponding side, and each of the stirring power heads 4 is provided with a tension sensor for detecting the pressurized pressure.

[0057] Embodiment 2

[0058] Referring to Figure 4 The present application also provides a multi-power head pressurized hydraulic system of a multi-power head pressurized stirring pile machine as described in Embodiment 1, comprising a plunger pump 01, a multi-connection electric proportional multi-way valve 02 connected with the plunger pump 01, and a pressurized control module 03 and at least two power head winch control modules 04 connected with the multi-connection electric proportional multi-way valve 02; specifically, each power head winch 8 is provided with a corresponding power head winch control module 04, and in this embodiment, two power head winch control modules 04 are provided for controlling the corresponding stirring power heads 4, the power head winch control module 04 comprises a power head winch 8 hydraulic motor for driving the power head winch 8;

[0059] The multi-connection electric proportional multi-way valve 02 comprises a pressurized reversing valve 021 and at least two power head reversing valves 022 matched with the power head winch control module 04; the pressurized reversing valve 021 comprises a pressurized reversing valve body 023 and a first proportional electromagnet 024 and a second proportional electromagnet 025 respectively provided at both ends thereof, the pressurized reversing valve body 023 is driven to reverse by controlling the power-on and power-off of the corresponding proportional electromagnet, so as to realize the forward rotation or reverse rotation of the pressurized control module 03, thereby realizing the winding and unwinding of the first steel wire rope 7 of the pressurized winch 1;

[0060] The power head reversing valve 022 comprises a power head reversing valve body 026 and a third proportional electromagnet 027 and a fourth proportional electromagnet 028 respectively provided at both ends thereof, the power head reversing valve 022 is driven to reverse by controlling the power-on and power-off of the corresponding proportional electromagnet, so as to realize the forward rotation or reverse rotation of the power head winch control module 04, thereby realizing the winding and unwinding of the second steel wire rope 81 of the power head winch 8;

[0061] The pressurized control module 03 comprises a pressurized winch hydraulic motor 031 and a floating electromagnetic valve 032 provided in parallel with the pressurized winch hydraulic motor 031, the floating electromagnetic valve 032 is used to control the communication or disconnection of the two working oil ports of the pressurized winch hydraulic motor 031;

[0062] Specifically, in the embodiment, the pressure reversing valve 021 and the power head reversing valve 022 are both electric proportional multi-way valves; the first proportional electromagnet 024 is powered, the pressure reversing valve 021 is in the first working position, the pressure winch hydraulic motor 031 drives the pressure winch 1 to receive the first steel wire rope 7 in the forward rotation; the second proportional electromagnet 025 is powered, the pressure reversing valve 021 is in the second working position, the pressure winch hydraulic motor 031 drives the pressure winch 1 to release the first steel wire rope 7 in the reverse rotation; the third proportional electromagnet 027 is powered, the power head reversing valve 022 is in the first working position, the power head winch 8 hydraulic motor drives the power head winch 8 to make the down-putting stirring power head 4 move, the fourth proportional electromagnet 028 is powered, the power head reversing valve 022 is in the second working position, the power head winch 8 hydraulic motor drives the power head winch 8 to make the up-putting stirring power head 4 move;

[0063] The floating electromagnetic valve 032 is a two-position two-way electromagnetic valve, and two oil ports of the floating electromagnetic valve 032 are respectively matched and connected with two working oil ports of the pressure winch hydraulic motor 031; when the floating electromagnetic valve 032 is in the first working position, the two oil ports are not communicated with each other, so that the two working oil ports of the pressure winch hydraulic motor 031 are communicated with the corresponding oil ports of the power head reversing valve 022, so that the plunger pump 01 supplies oil to the pressure winch hydraulic motor 031; when the floating electromagnetic valve 032 is in the second working position, the two oil ports are communicated with each other, so that the two working oil ports of the pressure winch hydraulic motor 031 form a passage through the floating electromagnetic valve 032, so that the pressure winch hydraulic motor 031 is in a floating state, a very small tension is applied to the first steel wire rope 7, and the first steel wire rope 7 can follow the movement. At this time, the pressure winch 1 can follow the up-putting movement of any power head winch 8, and the speed and the stirring power head 4 speed remain consistent, so that the steel wire rope cannot be tangled.

[0064] As a preferred embodiment, the multi-connected electric proportional multi-way valve 02 further comprises an electric proportional overflow valve 05 for adjusting the pressure of the pressure winch 1; the electric proportional overflow valve 05 is arranged on the oil return oil way of the pressure control module 03, and the pressure of the pressure winch 1 is adjusted by adjusting the overflow pressure of the electric proportional overflow valve 05.

[0065] Embodiment 3

[0066] The application also provides a control method of the multi-power head pressure stirring pile machine, comprising the multi-power head pressure hydraulic system of the multi-power head pressure stirring pile machine provided in the embodiment 2, and the steps comprise:

[0067] S1: When any one of the power head winch 8 needs to do the up stirring power head 4 action, the fourth proportional solenoid 028 of the multi-connected electric proportional multi-way valve 02 is powered on, the floating solenoid valve 032 of the pressure control module 03 is powered on, the two working oil ports of the pressure winch hydraulic motor 031 are connected, the pressure winch hydraulic motor 031 is in a floating state, a very small tension is applied to the first steel wire rope 7, and the first steel wire rope 7 can follow the up action of any one of the power head winch 8 to perform the out-rope action, and the speed and the stirring power head 4 speed remain consistent, ensuring that the steel wire rope will not be tangled;

[0068] S2: When any one of the power head winch 8 needs to do the down stirring power head 4 action, the third proportional solenoid 027 of the multi-connected electric proportional multi-way valve 02 is powered on, the first proportional solenoid 024 is powered on, and the pressure winch 1 follows the down action of any one of the power head winch 8 to perform the tensioning action; the speed and the stirring power head 4 speed remain consistent, ensuring that the steel wire rope will not be tangled; in this way, the stirring power head 4 will obtain the downward pressure from the pressure winch 1, making the power head drill more efficient, and the pressure can be flexibly adjusted according to the needs of the construction parameters;

[0069] In the pressure process, referring to Figure 5 When the pressure on any one of the stirring power heads 4 is less than the first pressure preset value, the electric proportional overflow valve 05 is powered on, and the initial pressure value is set to AMPa, the pressure on the stirring power head 4 is continuously applied, the tension sensor on the stirring power head 4 detects the pressure in real time, and compares it with the first pressure preset value and the second pressure preset value stored in the controller, and adjusts the pressure value of the electric proportional overflow valve 05 based on the comparison result until the pressure on the stirring power head 4 is greater than the first pressure preset value and less than the second pressure preset value;

[0070] Specifically, when the pressure value of the electric proportional overflow valve 05 is adjusted, if the pressure on the stirring power head 4 is less than the first pressure preset value (preferably, the first pressure preset value is 10T) at the initial pressure value AMPa (preferably, the initial pressure value of the electric proportional overflow valve 05 is set to about 5MPa), the pressure value is increased by BMPa (preferably, the pressure value is increased by 5MPa each time) based on the initial pressure value AMPa, and it is judged whether the pressure on the stirring power head 4 is greater than the first pressure preset value,

[0071] If it is greater than the first pressure preset value, the electric proportional overflow valve 05 maintains the current set pressure value,

[0072] If the pressure on the stirring power head 4 is still less than the first pressure preset value, the set pressure value of the electric proportional overflow valve 05 is adjusted to (A+nB) MPa, where n is a non-zero positive integer greater than 1, until the pressure on the stirring power head 4 is greater than the first pressure preset value;

[0073] When the pressure value of the electric proportional overflow valve 05 is adjusted step by step, if the pressure on the stirring power head 4 is greater than the second pressure preset value (preferably, the second pressure preset value is 30T), the set pressure value of the electric proportional overflow valve 05 is adjusted to (A+(n-1)B) MPa; that is, when the set pressure value of the electric proportional overflow valve 05 is adjusted to 15 MPa, if the pressure on the stirring power head 4 is greater than 30T, the set pressure value of the electric proportional overflow valve 05 is adjusted to 10 MPa again.

[0074] In the present application, the pressure is controlled by adjusting the set pressure value of the control electric proportional overflow valve 05; such a setting can effectively realize the function of one set of pressurizing winch 1 driving multiple stirring power heads 4, and the operation control is simple and the construction efficiency is high; at the same time, since the floating electromagnetic valve 032 is also provided on the pressure control module 03, when the stirring power head 4 is lifted on any power head winch 8, the floating electromagnetic valve 032 is controlled to be powered, and the two working oil ports of the pressurizing winch hydraulic motor 031 are communicated, so that the pressurizing winch 1 follows the lifting of the power head winch 8 to perform the rope-out action when being lifted on any power head winch 8, thereby realizing one-to-many without affecting the lifting operation of each power head winch 8, and without the need for complex switching operation, only the power-on and power-off of the floating electromagnetic valve 032 needs to be controlled.

[0075] As a preferred embodiment, the control method further comprises a step S0,

[0076] S0: When all power head winches 8 do not act, the pressurizing winch 1 is controlled alone, the first proportional electromagnet 024 is powered, the pressurizing winch 1 receives the first steel wire rope 7, and the second proportional electromagnet 025 is powered, the pressurizing winch 1 releases the first steel wire rope 7; such a setting facilitates the installation, replacement, adjustment and other actions of the first steel wire rope 7 and the pressurizing winch 1.

[0077] The above is only a preferred embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation made under the inventive concept of the present application, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A multi-power-head pressurized mixing pile machine, characterized in that, It comprises: A pressurized winch arranged on the machine body platform; A column assembly arranged on the machine body platform for mixing construction, which comprises a column and at least two mixing power heads slidably arranged on the column; The top of the mixing power head is respectively provided with a first pressurized pulley set and a second pressurized pulley set; A direction-changing pulley set arranged on the machine body platform and adjacent to the column; A fixed pulley set arranged on the side of the machine body platform and adjacent to the column; A first steel wire rope, one end of which is fixed on and operatively wound on the pressurized winch, and the other end of which extends out of the pressurized winch, passes through the direction-changing pulley set, then passes through the first pressurized pulley set and the second pressurized pulley set of one of the mixing power heads, and then passes through the fixed pulley set downward, and then extends upward from the fixed pulley set and passes through the first pressurized pulley set and the second pressurized pulley set of the other mixing power head, and then extends downward and is fixed to the machine body platform.

2. A multi-power-head pressurized mixing pile machine according to claim 1, characterized in that, The multi-power-head pressurized mixing pile machine further comprises power head winches matched with the number of mixing power heads, which are arranged on the machine body platform in intervals; and the corresponding mixing power heads are driven to move up and down by second steel wire ropes.

3. A multi-powerhead pressurized mixing pile machine according to claim 1 or 2, characterized in that, The multi-power-head pressurized mixing pile machine further comprises a support inclined rod, one end of which is hinged to the machine body platform and the other end of which is hinged to the column.

4. A multi-power-head pressurized hydraulic system of a multi-power-head pressurized mixing pile machine according to any one of claims 1-3, characterized in that, It comprises a plunger pump, a multi-connected electric proportional multi-way valve connected with the plunger pump, and a pressurization control module and at least two power head winch control modules connected with the multi-connected electric proportional multi-way valve; The multi-connected electric proportional multi-way valve comprises a pressurization reversing valve and at least two power head reversing valves matched with the power head winch control modules; the pressurization reversing valve comprises a pressurization reversing valve body and a first proportional electromagnet and a second proportional electromagnet respectively arranged at two ends thereof, and the pressurization reversing valve body is driven to reverse by controlling the power-on and power-off of the corresponding proportional electromagnet to realize the forward rotation or reverse rotation of the pressurization control module; The power head reversing valve comprises a power head reversing valve body and a third proportional electromagnet and a fourth proportional electromagnet respectively arranged at two ends thereof, and the power head reversing valve is driven to reverse by controlling the power-on and power-off of the corresponding proportional electromagnet to realize the forward rotation or reverse rotation of the power head winch control module; The pressurization control module comprises a pressurized winch hydraulic motor and a floating electromagnetic valve arranged in parallel with the pressurized winch hydraulic motor, and the floating electromagnetic valve is used to control the communication or disconnection of the two working oil ports of the pressurized winch hydraulic motor.

5. The multiple power head pressurized hydraulic system of claim 4, wherein, The multi-connected electric proportional multi-way valve further comprises an electric proportional overflow valve for adjusting the pressurization pressure of the pressurized winch.

6. A control method of a multi-ram pressurized mixing pile machine, comprising a multi-ram pressurized hydraulic system of a multi-ram pressurized mixing pile machine according to claim 4 or 5, characterized in that, The steps thereof comprise: S1: when any one of the power head winches needs to perform the up-mixing power head action, the fourth proportional electromagnet of the multi-connected electric proportional multi-way valve is powered on, the floating electromagnetic valve of the pressurization control module is powered on, the two working oil ports of the pressurized winch hydraulic motor are communicated, and the pressurized winch performs the out-rope action following the up-mixing action of any one of the power head winches; S2: When any one power head winch needs to do the down-put stirring power head action, the third proportional solenoid on the multi-connection electric proportional multi-way valve is powered on, the first proportional solenoid is powered on, and the pressure winch follows the down-put action of any one power head winch to perform the rope collection and pressure increase action; In the pressure increasing process, when the pressure on any one stirring power head is less than the first pressure increasing preset value, the electric proportional overflow valve is powered on, and the initial pressure value thereof is set to AMPa, the pressure on the stirring power head is continuously applied, and the pressure value of the electric proportional overflow valve is gradually adjusted until the pressure on the stirring power head is greater than the first pressure increasing preset value and less than the second pressure increasing preset value.

7. The control method according to claim 6, characterized by In step S2, when the pressure value of the electric proportional overflow valve is gradually adjusted, if the pressure on the stirring power head is less than the first pressure increasing preset value at the initial pressure value AMPa, the initial pressure value AMPa is increased by BMPa, and it is judged whether the pressure on the stirring power head is greater than the first pressure increasing preset value, If it is greater than the first pressure increasing preset value, the electric proportional overflow valve maintains the current set pressure value, If it is still less than the first pressure increasing preset value, the set pressure value of the electric proportional overflow valve is adjusted to (A+nB) MPa, where n is a non-zero positive integer greater than 1, until the pressure on the stirring power head is greater than the first pressure increasing preset value.

8. The control method according to claim 7, characterized by, When the pressure value of the electric proportional overflow valve is gradually adjusted, if the pressure on the stirring power head is greater than the second pressure increasing preset value, the set pressure value of the electric proportional overflow valve is adjusted to (A+(n-1)B) MPa.

9. The control method according to any one of claims 6 to 8, characterized by, The control method further comprises step S0, S0: When all power head winches do not act, the pressure winch is controlled alone, the first proportional solenoid is powered on, the pressure winch receives the first steel wire rope, and the second proportional solenoid is powered on, the pressure winch releases the first steel wire rope.

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