Cement-soil mixing pile machine with buffering and pressurizing device
By introducing buffer structure and pressure sensors into cement soil mixing pile machines, the safety hazards of mixing pile machines in the prior art when encountering uneven formations or obstacles are solved, and the stability of equipment and construction safety are improved. Extend the service life of the equipment.
Patent Information
- Application Number
- CN202420904935.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-28
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-04-28
AI Technical Summary
When existing mixing pile machines with pressurization devices encounter uneven formations or obstacles, the sinking speed will slow down or be suspended, which may lead to damage to the hoist and breakage of the wire rope, posing safety hazards and insufficient construction efficiency and safety.
A cement soil mixing pile machine with buffering and pressurization device is designed, adopting a buffer structure and a pressure sensor. The buffer structure includes a fixed shell, a lower spring plate, a buffer spring and an upper spring plate, which relieves the pull-down steel through the buffer spring and the limit plate. The tension growth rate of the cable prevents the secondary hoist from overloading, and senses the pressure of the limit plate through the pressure sensor, and pauses the operation in time to avoid damage to the equipment.
Effectively buffering the equipment workload during the down pressure process improves the stability and safety of the equipment, extends the service life, and improves the safety and convenience of construction.
Smart Images
Figure CN222294953U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cement soil mixing pile machines, in particular to a cement soil mixing pile machine with a buffer pressure device. Background Art
[0002] At present, the working principle of cement mixing piles is mainly to use a deep mixer to spray the slurry curing agent into the reinforced soft soil with high pressure during the drilling process. The curing agent is forced to mix with the in-situ soft soil by the rotation of the specially designed drill blade on the machine. The curing agent undergoes a series of physical and chemical reactions to make the original soil at the pile position harden from soft, forming a pile body with good integrity, strong water stability and high bearing capacity.
[0003] The interaction between the pile body and the soil between the piles forms a composite foundation with a bearing capacity greatly improved compared to the natural soft soil foundation. The curing agent used in actual engineering is mainly cement or lime, which is sprayed into cement-soil piles or lime-soil piles.
[0004] Normally, a pile mixing machine performs pressurized mixing by its own weight, which results in a low construction efficiency.
[0005] In a Chinese patent with announcement number CN214576791U, a mixing pile machine with a pressurizing device is disclosed, including a column, an equipment platform, a drilling rig, a driving device and a pressurizing device; the column is uprightly arranged on the equipment platform, the drilling rig is movably arranged on the column up and down, the driving device is coupled with the drilling rig power and is used to drive the drilling rig; the pressurizing device is arranged on the equipment platform, the pressurizing device includes a first winch and a second winch, the steel wire ropes of the first winch and the second winch are both connected to the drilling rig, and are used to lift and pull down the drilling rig respectively. In this technical solution, the construction efficiency of the mixing pile machine is greatly improved by introducing the pressurizing device, and the disadvantages caused by the mixing pile machine having no pressurizing device are solved.
[0006] However, when the pile mixer with a pressure device provided by the above patent encounters uneven strata or obstacles, the sinking speed of the power head slows down or even stops, while the winch that pulls the power head downward is still working, which may cause damage to the winch or even break the wire rope, resulting in a safety accident, causing inconvenience to the user. Utility Model Content
[0007] In view of the deficiencies in the prior art, the utility model provides a cement-soil mixing pile machine with a buffer pressurizing device, aiming to solve the above problems.
[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0009] A cement soil mixing pile machine with a buffer pressurizing device comprises an equipment platform, a column is fixed on the top of the equipment platform, a support rod is fixed between the column and the equipment platform, and further comprises:
[0010] The main winch is fixed on the top of the equipment platform;
[0011] A power box, which is slidably arranged on the side of the column;
[0012] A drill bit, which is arranged at the bottom of the power box;
[0013] A plurality of first pulleys, which are arranged on the top of the column;
[0014] The lifting cable has one end connected to the power box and the other end connected to the main winch;
[0015] A buffer structure, which is arranged on the side of the equipment platform;
[0016] The auxiliary winch is arranged on the side of the equipment platform and is connected to the buffer structure through a pull-down steel cable.
[0017] Preferably, two second pulleys are provided at the bottom of the power box, and the pull-down steel cable passes around the two second pulleys.
[0018] Preferably, the two second pulleys are symmetrical with respect to the drill bit.
[0019] Preferably, the buffer structure comprises:
[0020] A fixed shell, which is fixed to the side of the equipment platform;
[0021] A lower spring plate fixed to the bottom of the inner wall of the fixed shell;
[0022] a plurality of buffer springs fixed to the top of the lower spring plate;
[0023] an upper spring plate fixed to the top of the buffer spring;
[0024] The pull-down steel cable passes through the fixed shell and is fixedly connected with the upper spring plate.
[0025] Preferably, a through hole is opened on the top of the fixed shell, and the pull-down steel cable passes through the through hole.
[0026] Preferably, a limiting plate is fixed inside the fixed shell;
[0027] A pressure sensor is arranged at the bottom of the limiting plate and is aligned with the upper spring plate.
[0028] Compared with the prior art, the utility model has the following beneficial effects:
[0029] The utility model provides a cement soil mixing pile machine with a buffer pressure device, which can buffer the working load of the equipment during the downward pressure process, ensure the stability and safety of the equipment, facilitate the long-term use of the equipment, and thus be more convenient for users to use. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] Figure 1 This is a structural schematic diagram of a cement-soil mixing pile machine with a buffer pressurizing device according to the utility model;
[0031] Figure 2 It is an enlarged schematic diagram of the side structure of the buffer structure of the utility model.
[0032] In the figure: 10 equipment platform, 11 column, 12 support rod, 20 main winch, 30 power box, 40 first pulley, 50 lifting cable, 60 drill bit, 70 buffer structure, 71 fixed shell, 72 limit plate, 73 pressure sensor, 74 lower spring plate, 75 buffer spring, 76 upper spring plate, 80 lower pulley, 81 second pulley, 90 auxiliary winch. DETAILED DESCRIPTION
[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0034] In the examples of this application, please refer to Figure 1 and 2 A cement soil mixing pile machine with a buffer pressurizing device includes an equipment platform 10, a column 11 is fixed on the top of the equipment platform 10, a support rod 12 is fixed between the column 11 and the equipment platform 10, a power box 30 is slidably provided on the side of the column 11, and a drill bit 60 is provided at the bottom of the power box 30. The connection, control and transmission methods of the above structure can refer to the comparative documents proposed in the background technology, and the existing technology can be used, so it will not be repeated;
[0035] Furthermore, a main winch 20 is fixed on the top of the equipment platform 10, a plurality of first pulleys 40 are arranged on the top of the column 11, one end of an upward lifting cable 50 is connected to the top of the power box 30, and the other end of the upward lifting cable 50 is connected to the main winch 20. The upward lifting cable 50 can be pulled by winding up the main winch 20 to drive the power box 30 and the drill bit 60 to move upward;
[0036] A buffer structure 70 and an auxiliary winch 90 are provided on the side of the equipment platform 10. The auxiliary winch 90 is connected to the buffer structure 70 through a pull-down cable 80. Two second pulleys 81 are provided at the bottom of the power box 30. The two second pulleys 81 are symmetrical with respect to the drill bit 60. The pull-down cable 80 passes around the two second pulleys 81. By starting the auxiliary winch 90 to reel in, the pull-down cable 80 can be pulled, and the power box 30 and the drill bit 60 can be driven downward.
[0037] For further examples, see Figure 1 and 2 The buffer structure 70 includes a fixed shell 71 fixed to the side of the equipment platform 10, a lower spring plate 74 is fixed to the bottom of the inner wall of the fixed shell 71, a plurality of buffer springs 75 are fixed to the top of the lower spring plate 74, an upper spring plate 76 is fixed to the top of the buffer spring 75, a through hole is opened on the top of the fixed shell 71, and the pull-down steel cable 80 passes through the through hole of the fixed shell 71 and is fixedly connected to the upper spring plate 76, a limit plate 72 is fixed inside the fixed shell 71, a pressure sensor 73 is arranged at the bottom of the limit plate 72, and is aligned with the upper spring plate 76;
[0038] When the pile mixing machine starts construction, the main winch 20 is closed and the auxiliary winch 90 is started to retract the pull-down cable 80 at a relatively constant speed. The pull-down cable 80 provides a downward force F to the power box 30, so that the power box 30 rotates and presses the drill bit 60 into the soil layer under the action of its own gravity, the weight of the drill bit 60 and the force F.
[0039] When the soil layer is uniform, the speed at which the power box 30 moves downward matches the speed at which the pull-down steel cable 80 is recovered, the tension of the pull-down steel cable 80 remains relatively constant, and the buffer spring 75 in the buffer structure 70 is at a relatively stable elongation.
[0040] When encountering a hard soil layer or an obstacle during operation, the speed at which the power box 30 moves downward slows down or even stops pressing down, but the auxiliary winch 90 still maintains the original recovery speed of the pull-down cable 80. At this time, the pull-down cable 80 is connected to the buffer spring 75 in the buffer structure 70. Since the stiffness of the buffer spring 75 is relatively small, when the tension in the pull-down cable 80 increases rapidly, the buffer spring 75 is stretched, which reduces the growth rate of the tension in the pull-down cable 80, so that the auxiliary winch 90 has space to recover the pull-down cable 80, and avoids the auxiliary winch 90 from being overloaded immediately.
[0041] When the obstacle is very hard and the power box 30 cannot be pressed down for a long time, the elongation of the buffer spring 75 in the buffer structure 70 will continue to increase, and the upper spring plate 76 will continue to move upward. When the upper spring plate 76 moves to the limit plate 72, the limit plate 72 blocks the upward movement space of the upper spring plate 76 to prevent the buffer spring 75 from being broken.
[0042] At the same time, the pressure sensor 73 arranged on the limit plate 72 senses the pressure exerted on the limit plate 72 by the upper spring plate 76, and then the signal can be transmitted to the operator on the equipment platform in an existing manner. The operator can then pause the auxiliary winch 90 to prevent the auxiliary winch 90 from overloading and the pull-down cable 80 from breaking. The operation is simple, the stability is better, and the safety is higher.
[0043] The pressure sensor 73 is an existing sensing device, which is connected, detected and transmits signals in an existing manner, and the operator also obtains the result in an existing manner, such as setting an alarm.
[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A cement soil mixing pile machine with a buffer pressure device, comprising an equipment platform, a column is fixed on the top of the equipment platform, and a support rod is fixed between the column and the equipment platform, characterized in that: Also includes: The main winch is fixed on the top of the equipment platform; A power box, which is slidably arranged on the side of the column; A drill bit, which is arranged at the bottom of the power box; A plurality of first pulleys, which are arranged on the top of the column; The lifting cable has one end connected to the power box and the other end connected to the main winch; A buffer structure, which is arranged on the side of the equipment platform; The auxiliary winch is arranged on the side of the equipment platform and is connected to the buffer structure through a pull-down steel cable.
2. A cement soil mixing pile machine with a buffer pressure device according to claim 1, characterized in that: Two second pulleys are arranged at the bottom of the power box, and the pull-down steel cable passes around the two second pulleys.
3. A cement-soil mixing pile machine with a buffer pressure device according to claim 2, characterized in that: The two second pulleys are symmetrical with respect to the drill bit.
4. The cement soil mixing pile machine with a buffer pressure device according to claim 1, characterized in that: The buffer structure comprises: A fixed shell, which is fixed to the side of the equipment platform; A lower spring plate fixed to the bottom of the inner wall of the fixed shell; a plurality of buffer springs fixed to the top of the lower spring plate; an upper spring plate fixed to the top of the buffer spring; The pull-down steel cable passes through the fixed shell and is fixedly connected with the upper spring plate.
5. The cement soil mixing pile machine with a buffer pressure device according to claim 4, characterized in that: A through hole is provided on the top of the fixed shell, and the pull-down steel cable passes through the through hole.
6. The cement-soil mixing pile machine with a buffer pressure device according to claim 4, characterized in that: A limit plate is fixed inside the fixed shell; A pressure sensor is arranged at the bottom of the limiting plate and is aligned with the upper spring plate.