Cement-soil mixing pile machine

Abstract

The utility model provides a cement mixing pile machine which comprises a machine body, at least one drill rod connected with the machine body and a drill bit assembly arranged at the bottom of the drill rod, the cement mixing pile machine further comprises a supporting assembly connected with the machine body, the drill rod can be sleeved with the supporting assembly, and the supporting assembly is provided with a damping layer to prevent the drill rod from deviating and deforming due to vibration. The drill bit assembly can comprise a plurality of tooth blocks which are connected with the drill rod and provided with tooth tips for multi-point drilling, and at least one sawtooth can be arranged on the outer side of each tooth block. The device has the advantages that rapid construction can be achieved in a local hard soil layer, the hidden danger that materials are wasted due to the fact that the device is not matched with control over the using amount of cement paste is reduced, the hidden danger that a drill rod deviates and deforms is reduced, the service life of the device is prolonged, the maintenance cost is reduced, the pile forming quality is improved, the construction efficiency and quality can be improved, and the construction cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction, in particular to a cement soil mixing pile machine. Background Art

[0002] Before the foundation pit support construction, it is usually necessary to inject cement soil mixing piles to form a water-stop curtain to prevent water from the outside of the foundation pit from seeping into the foundation pit, facilitate construction and ensure construction safety. In the existing technology, the geological survey report only plays a representative role in actual construction and often cannot reflect all the soil conditions in the site. When drilling cement soil mixing piles, due to the presence of hard soil in some areas and some soil layers, the drilling speed of the pile driver is slow in stages, which is incompatible with the amount of cement slurry and causes waste. At the same time, it also slows down the construction progress. The drill rod is offset or deformed due to vibration and extrusion after long-term use, and the maintenance cost is high and it is easy to affect the verticality of the cement soil mixing pile. There are technical problems such as low construction efficiency, waste of construction materials, easy offset or deformation of the drill rod, affecting the construction quality and high maintenance cost. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a cement soil mixing pile machine, which is particularly suitable for fast and high-quality cement soil mixing pile construction operations in areas with partial hard soil layers.

[0004] The technical solution adopted by the utility model is: a cement soil mixing pile machine, comprising a machine body, at least one drill rod connected to the machine body, and a drill head assembly arranged at the bottom of the drill rod. The cement soil mixing pile machine also includes a support assembly connected to the machine body, the support assembly can be sleeved outside the drill rod and is provided with a shock-absorbing layer to prevent the drill rod from vibrating and deforming.

[0005] Furthermore, the support assembly includes an outer sleeve and an inner sleeve adapted to the number of drill rods. The outer sleeve is connected to the fuselage, and the inner sleeve can be sleeved on the outside of the corresponding drill rod and each inner sleeve is arranged in the outer sleeve. Buffer material is filled between the outer sleeve and the inner sleeve to form a shock-absorbing layer.

[0006] Furthermore, the buffer material includes rubber.

[0007] Furthermore, the drill bit assembly includes a plurality of tooth blocks connected to the drill rod, and a tooth tip is arranged at the end of each tooth block away from the drill rod.

[0008] Furthermore, the drill bit assembly also includes a plurality of connecting members, which are evenly spaced along the circumference of the drill rod, and each connecting member is connected to at least one tooth block for multi-point drilling.

[0009] Furthermore, at least one sawtooth is arranged on the outer side of the tooth block.

[0010] Furthermore, the drill bit assembly also includes a plurality of chips, and each tooth tip is provided with a connecting hole for connecting the chip.

[0011] Furthermore, the support assembly is provided with a detection device to detect verticality.

[0012] The advantages and positive effects of the utility model are as follows: due to the adoption of the above technical scheme, rapid construction can be carried out even in local hard soil areas, reducing the hidden danger of material waste due to incompatibility with cement slurry dosage control, reducing the hidden danger of drill rod deviation and deformation, extending the service life of the device, reducing maintenance costs, and improving the quality of pile formation; it has the advantages of improving construction efficiency and quality, and reducing construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural schematic diagram of an embodiment of the utility model

[0014] Figure 2 This is an enlarged schematic diagram of the drill bit assembly structure in one embodiment of the utility model.

[0015] Figure 3 This is a schematic diagram of the connection of multiple drill rods and drill bit assemblies in another embodiment of the utility model.

[0016] Figure 4 It is a top view of a support assembly in another embodiment of the utility model

[0017] In the figure:

[0018] 1. Machine body 2. Drill rod 3. Drill head assembly

[0019] 4. Support assembly 5. Detection device 6. Motor

[0020] 7. Spiral blade 8. Cleaning device 31. Tooth block

[0021] 32. Tooth tip 33. Connecting hole 34. Connecting piece

[0022] 41. Buffer material 42. Outer sleeve 43. Inner sleeve DETAILED DESCRIPTION

[0023] The following is a description of the embodiments of the present invention in conjunction with the accompanying drawings. The described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar units or units having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0025] In the description of the present invention, it should be understood that the terms such as “installation”, “connection” and “fixation” should be understood in a broad sense, and may refer to direct connection, installation or fixation or indirect connection, installation or fixation, and the present invention does not impose any restrictions on this.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the structure or unit referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] Embodiment 1:

[0028] like Figure 1 to Figure 2 As shown, a cement-soil mixing pile machine includes a body 1, at least one drill rod 2 connected to the body 1, and a drill bit assembly 3 arranged at the bottom of the drill rod 2. The cement-soil mixing pile machine also includes a support assembly 4 connected to the body 1. The support assembly 4 can be sleeved outside the drill rod 2 and provided with a shock-absorbing layer to prevent the drill rod 2 from being deflected or deformed due to vibration. In this embodiment, the number of the drill rod 2 and the drill bit assembly 3 is one. By providing a support assembly 4 with a shock-absorbing layer, the deflection or deformation of the drill rod 2 after long-term use can be slowed down, equipment damage can be reduced, maintenance costs can be reduced, and the verticality of the cement-soil mixing pile not meeting the standards due to deflection or deformation can be avoided, which can reduce maintenance costs and improve construction quality.

[0029] In this embodiment, there are two support assemblies 4, which are respectively arranged at the middle and bottom of the drill rod 2 to provide multiple protections for the drill rod 2. In other embodiments, one support assembly 4 or multiple support assemblies spaced along the length direction of the drill rod 2 can be provided according to construction cost or usage requirements.

[0030] In this embodiment, the drill bit assembly 3 includes a plurality of tooth blocks 31 connected to the drill rod 2, and the plurality of tooth blocks 31 may be evenly spaced along the circumference of the drill rod. A tooth tip 32 is provided at the end of each tooth block 31 away from the drill rod 2. In this embodiment, the tooth tip 32 is arrow-shaped and is a block with a triangular cross section. In other embodiments, it may also be a block or cone with a trapezoidal cross section. By reducing the contact area of ​​the initial entry into the soil layer and then gradually increasing the contact area with the soil layer from bottom to top, it is easier to cut into the soil layer, especially the hard soil layer, which can greatly improve the efficiency of drilling into the soil layer, avoid the periodic slow drilling caused by the hard soil layer in the interval, thereby reducing the overflow and waste of cement slurry due to the incompatibility with the cement slurry input, improve construction efficiency, and save construction costs.

[0031] In this embodiment, the drill bit assembly 3 further includes a plurality of connectors 34, which are evenly spaced along the circumference of the drill rod 2, each connector 34 is connected to at least one tooth block 31, and the connector 34 can be made of steel. By drilling at multiple points, compared with the method of rotating drilling with the entire end in contact with the soil layer, the soil can be drilled more efficiently, which is more suitable for areas with hard soil layers and can improve the drilling efficiency.

[0032] In this embodiment, each group of two tooth blocks 31 is connected to the drill rod 2 through a connecting piece 34, and each group of drill bit assemblies includes three connecting pieces 34. By applying downward pressure to the soil layer from all directions through multiple drilling points surrounding the drill rod 2, the drilling effect can be improved and the construction efficiency can be improved.

[0033] In this embodiment, at least one sawtooth is disposed on the outer side of the tooth block 31 , which can be matched with the tooth tip 32 to improve the drilling effect.

[0034] When the drilling effect still cannot meet the requirements, a plurality of sharper chips can be installed. The chips can be flat, and each tooth tip 32 is provided with a connecting hole 33 for connecting the chips, so as to speed up the construction progress.

[0035] In this embodiment, each tooth block 31 is provided with a socket near the end of the connecting member 34, and the connecting member 34 can be embedded in the socket and connected and reinforced by bolts or welding. In this embodiment, the tooth block 31 is U-shaped, which is more convenient to disassemble and install. The detachable installation method is convenient for the maintenance and replacement of a single tooth block 31, improves the flexibility of maintenance, and is easy to promote and popularize. The outer peripheral surface of the drill rod 2 is provided with a spiral blade 7 in a spiral ascending manner. The spiral blade 7 is flat and can be driven by the drill rod 2 to rotate to fully mix the cement soil. The fuselage 1 is provided with a cleaning device 8, and the cleaning device 8 may include a mud removal plate connected to the fuselage 1, and the mud removal plate can be extended into the gap of the spiral blade 7. When the drill rod 2 drives the spiral blade 7 to rotate and remove the soil layer, the cement soil mixture is scraped off, so as to avoid the long-term accumulation and solidification of cement soil and make it difficult to clean, reduce the influence of cement soil accumulation on the use effect, reduce the cleaning time of the cement soil mixing pile machine, and save the cost of manual cleaning; in other embodiments, the cleaning device 8 may include a connecting pipe, a water pump and a water tank provided on the fuselage 1, and the water pump is connected to the water tank and sprays water on the area to be cleaned through the connecting pipe.

[0036] Embodiment 2:

[0037] like Figure 3 to Figure 4 As shown, in this embodiment, the number of drill rods 2 is three, and in other embodiments, it can also be two, six or more. Multiple drill rods 2 can better improve construction efficiency, improve cement soil mixing uniformity, and form a better waterproof curtain waterproof effect. When there are three drill rods 2, the drill rods 2 arranged on both sides can be connected to the slurry delivery device to spray while stirring, and the drill rod 2 arranged in the middle can be connected to the pumping device to pump air while stirring, so as to achieve multifunctional construction operations and improve the mixing effect and pile quality. During the construction process, the power of the motor 6 connected to the fuselage 1 for driving the drill rod 2 to move can be increased, thereby increasing the drilling force. In traditional construction, the motor power is usually 45 kilowatts, which can only meet the drilling of soil layers such as miscellaneous fill and clay. In this embodiment, the motor power can be increased to more than 45 kilowatts, and a higher power 80 kilowatt motor is selected. By using a high-power motor to speed up the drilling speed and increase the drilling force, it is better suitable for drilling hard soil layers.

[0038] In this embodiment, the support assembly 4 includes an outer sleeve 42 and an inner sleeve 43 matching the number of drill rods 2. The outer sleeve 42 is connected to the fuselage 1. The inner sleeve 43 can be sleeved outside the corresponding drill rod 2 and each inner sleeve 43 is arranged inside the outer sleeve 42. The buffer material 41 is filled between the outer sleeve 42 and the inner sleeve 43 to form a shock-absorbing layer. Through the shock-resistant buffer material 41, the support assembly 4 can not only support and limit the drill rod 2 during the construction process, but also reduce rigid contact, reduce the deviation and deformation of the drill rod 2 caused by vibration, improve the pile quality and the service life of the device, and reduce the maintenance cost.

[0039] In this embodiment, the buffer material 41 includes rubber, the outer sleeve 42 can be made of metal material, and the inner sleeve 43 is made of wear-resistant material, which can be a wear-resistant steel pipe. It is easy to obtain materials and can have a vibration buffering effect. It is easy to manufacture and has low cost, which is easy to promote.

[0040] In this embodiment, the support assembly 4 is provided with a detection device 5 to detect verticality. In this embodiment, the detection device is a level meter, which can detect the verticality of the whole machine during the construction process. Compared with the conventional plumb bob, it has higher accuracy and improves the construction quality.

[0041] The specific working process of this embodiment is as follows:

[0042] After the trench is excavated, the pile position is set out, the cement slurry is mixed according to the designed specific gravity, and the cement soil mixing pile machine is placed in place, the construction personnel use the detection device 5, that is, the level meter and the total station to control the verticality, start the motor 6, pump the cement slurry, and start drilling. After the drill bit assembly 3 enters the soil, it can be pumped and stirred by the drill rod 2 in the middle, and the drilling and lifting speed can be controlled synchronously to make the cement soil mixed evenly; if it is difficult to drill, the cement slurry pumping pressure can be lowered, and the chip can be installed through the connecting hole 33 to increase the drilling speed. During the drilling process. Multiple anti-seismic support components 4 can provide sufficient support and offset the impact caused by vibration during vibration, so as to better protect the device.

[0043] After the grouting sinks to the designed depth, the cement-soil mixing pile machine is started, and the grouting and mixing are carried out by the drill rods 2 arranged on both sides, while the drill rods 2 are lifted, so that the slurry and the soil are fully mixed until the mixed drill bit assembly 3 is lifted out of the ground. During the lifting process, the cement-soil mixture is cleaned by the cleaning device 8, which can reduce the cleaning time of the device, facilitate the drilling of the next pile, and make the mixture of cement slurry and soil more complete.

[0044] After one pile is constructed, the device is moved to the next pile position and the next pile is constructed.

[0045] The utility model can be quickly constructed even in local hard soil areas, reduces the hidden danger of material waste due to incompatibility with cement slurry dosage control, reduces the hidden danger of drill rod deviation and deformation, extends the service life of the device, reduces maintenance costs, and improves the quality of pile formation.

[0046] The above is a detailed description of the embodiments of the utility model, but the contents are only preferred embodiments of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A cement soil mixing pile machine, comprising a machine body, at least one drill rod connected to the machine body, and a drill head assembly arranged at the bottom of the drill rod, characterized in that: It also includes a support assembly connected to the fuselage, which can be sleeved outside the drill rod and provided with a shock-absorbing layer to prevent the drill rod from vibrating and deforming.

2. The cement soil mixing pile machine according to claim 1, characterized in that: The support assembly includes an outer sleeve and an inner sleeve adapted to the number of the drill rods, the outer sleeve is connected to the fuselage, the inner sleeve can be sleeved on the outside of the corresponding drill rod and each inner sleeve is arranged in the outer sleeve, and a buffer material is filled between the outer sleeve and the inner sleeve to form the shock-absorbing layer.

3. The cement soil mixing pile machine according to claim 2, characterized in that: The cushioning material includes rubber.

4. The cement soil mixing pile machine according to any one of claims 1 to 3, characterized in that: The drill bit assembly comprises a plurality of tooth blocks connected to the drill rod, and a tooth tip is arranged at an end of each tooth block away from the drill rod.

5. The cement soil mixing pile machine according to claim 4, characterized in that: The drill bit assembly further comprises a plurality of connecting members, which are evenly spaced along the circumference of the drill rod, and each of the connecting members is connected to at least one of the tooth blocks for multi-point drilling.

6. The cement soil mixing pile machine according to claim 4, characterized in that: At least one saw tooth is arranged on the outer side of the tooth block.

7. The cement soil mixing pile machine according to claim 4, characterized in that: The drill bit assembly further comprises a plurality of chips, and each of the tooth tips is provided with a connecting hole for connecting the chip.

8. The cement soil mixing pile machine according to claim 1, characterized in that: The support assembly is provided with a detection device to detect verticality.

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