Hydraulic soil squeezing blade

Abstract

The utility model discloses a hydraulic soil-squeezing blade which comprises a left half cylinder and a right half cylinder which are spliced, a left soil-squeezing blade arranged along the outer side wall of the left half cylinder, a right soil-squeezing blade arranged along the outer side wall of the right half cylinder, a left oil cylinder for driving the left soil-squeezing blade to stretch out and draw back, and a right oil cylinder for driving the right soil-squeezing blade to stretch out and draw back, the left oil cylinder and the right oil cylinder are embedded in the left half column body and the right half column body, and the left soil squeezing blade and the right soil squeezing blade are both arc-shaped blades. The device is compact in structure, stable and reliable in hydraulic soil-squeezing blade reaming and hydraulic thrust loading, and capable of effectively reducing the influence of vibration load on an adjacent existing structure.

Description

TECHNICAL FIELD

[0001] The utility model belongs to reaming device technical field, especially is involved in a hydraulic extrusion soil blade. BACKGROUND

[0002] Foundation treatment is the core problem faced in urban rail transit engineering construction in collapsible loess area, and if the collapsible loess of tunnel base is not properly treated, it will cause many problems such as segment cracking and lining misalignment. The current common methods for tunnel base treatment in collapsible loess area include soil replacement cushion method, lime-soil compaction pile method, rotary jet pile method and root pile method. The soil replacement cushion method is not suitable for large-area and large-thickness loess foundation treatment, the lime-soil compaction pile method has great difficulty in controlling the quality of hole forming and has great vibration during construction, the rotary jet pile method is not suitable for construction operation in narrow space due to the large size of construction machinery, and the root pile method can be used for construction operation in narrow space, but due to the small pile hole, the quality control of pile forming is difficult and the construction technology requirement is high, which limits the application range. Therefore, the foundation treatment methods and equipment such as soil replacement cushion method, lime-soil compaction pile method, rotary jet pile method and root pile method still face the restrictions of construction space and vibration noise, so in the face of the increasing demand for underground narrow space foundation treatment engineering such as more and more tunnels, culverts and existing building reinforcement in collapsible loess area, there is an urgent need for a hydraulic extrusion soil blade with reasonable design, which can realize vibration-free compaction reaming by extending into the collapsible loess foundation pre-hole and applying lateral force through the oil cylinder, and the hydraulic loading thrust is stable and reliable, which can effectively reduce the influence of vibration load on the adjacent existing structure. SUMMARY

[0003] The technical problem to be solved by the utility model is to provide a hydraulic extrusion soil blade, which is reasonable in design, convenient to operate, can realize vibration-free compaction reaming by extending into the collapsible loess foundation pre-hole and applying lateral force through the oil cylinder, and the hydraulic loading thrust is stable and reliable, which can effectively reduce the influence of vibration load on the adjacent existing structure.

[0004] To solve the above technical problems, the utility model adopts the technical scheme of a hydraulic extrusion soil blade, characterized by comprising two spliced left half cylinders, right half cylinders, left extrusion soil blades arranged along the outer side walls of the left half cylinders, right extrusion soil blades arranged along the outer side walls of the right half cylinders, a left oil cylinder driving the left extrusion soil blades to extend and retract, and a right oil cylinder driving the right extrusion soil blades to extend and retract, the left oil cylinder and the right oil cylinder are embedded in the left half cylinder and the right half cylinder, and the left extrusion soil blades and the right extrusion soil blades are both arc-shaped blades.

[0005] The above-mentioned hydraulic soil squeezing blade is characterized in that: the left semi-cylinder and the right semi-cylinder have the same structure, and both the left semi-cylinder and the right semi-cylinder include a semicircular carrier column and a cylindrical blind hole and a step through hole arranged on the semicircular carrier column, the cylindrical blind hole and the step through hole on one of the semicircular carrier columns are arranged alternately, a cylindrical blind hole on the left semi-cylinder and a step through hole on the right semi-cylinder correspond to each other for the installation of the right oil cylinder, a cylindrical blind hole on the right semi-cylinder and a step through hole on the left semi-cylinder correspond to each other for the installation of the left oil cylinder, the piston rod of the left cylinder extending out of the left semi-cylinder is connected to the left soil squeezing blade, and the piston rod of the right cylinder extending out of the right semi-cylinder is connected to the right soil squeezing blade.

[0006] The above-mentioned hydraulic soil-squeezing blade is characterized in that: the semicircular carrier column is provided with two semicircular grooves symmetrically arranged in the circumference of the cylindrical blind hole and the step through hole, and a yield portion is provided at the connection between the plane and the arc surface of the semicircular carrier column, the yield portion on the left semi-cylinder and the yield portion on the right semi-cylinder are spliced ​​to form two symmetrically arranged trapezoidal notches, and the semicircular groove on the left semi-cylinder and the semicircular groove on the right semi-cylinder are spliced ​​to form a circular hole channel.

[0007] The hydraulic soil squeezing blade is characterized in that: a first arc-shaped pad is provided at the end of the left oil cylinder piston rod, and the outer side wall of the first arc-shaped pad is connected to the left soil squeezing blade;

[0008] A second arc-shaped pad is provided at the end of the right oil cylinder piston rod, and the outer side wall of the second arc-shaped pad is connected to the right soil squeezing blade.

[0009] The above-mentioned hydraulic soil squeezing blade is characterized in that: a fastening hole is provided on the semicircular carrier column, and the fastening hole on the right semi-cylinder and the fastening hole on the right semi-cylinder are connected by fastening bolts passing through them.

[0010] The above-mentioned hydraulic soil squeezing blade is characterized in that the outer side surfaces of the left soil squeezing blade and the right soil squeezing blade are segmentedly provided with a plurality of parallel arc-shaped grooves.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] 1. The utility model has a simple structure, reasonable design, easy installation and layout, and is easy to use.

[0013] 2. The utility model is provided with two oil cylinders and two soil squeezing blades. The oil cylinders are used to realize dynamic loading on the soil squeezing blades. The soil squeezing blades expand outward to perform soil compaction and hole expansion operations, which can effectively reduce the impact of vibration loads on nearby existing structures. Secondly, hydraulic soil squeezing and hole expansion can provide powerful thrust, and the loading force is stable and reliable.

[0014] 3. The utility model is provided with two spliced ​​left and right half cylinders in order to realize the embedded installation of the left and right oil cylinders and facilitate the extension of the piston rod to connect the soil-extruding blades, providing a bearing base and good overall compactness; in addition, the soil-extruding blades are arranged in an arc shape along both sides of the half cylinder, and the soil-extruding area is large.

[0015] 4. The outer side surfaces of the left and right soil-squeezing blades of the utility model are divided into sections and provided with a plurality of arc-shaped grooves, and no arc-shaped grooves are provided at the oil cylinder connection position, in order to maintain the rigidity of the soil-squeezing blades, which not only plays the role of exhausting and draining water during the soil compaction process, but also can reduce the clay phenomenon.

[0016] In summary, the utility model has a reasonable design and is easy to operate. It extends into the pre-formed hole in the collapsible loess foundation and applies lateral force through the cylinder to achieve vibration-free compaction and hole expansion. The hydraulic loading thrust is stable and reliable, and can effectively reduce the impact of vibration loads on adjacent existing structures.

[0017] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the present utility model.

[0019] Figure 2 for Figure 1 Top view of .

[0020] Figure 3 for Figure 1 Schematic diagram of the structure after removing the soil-squeezing blades.

[0021] Figure 4 This is a structural diagram of the semicircular carrier column of the utility model.

[0022] Description of the accompanying drawings:

[0023] 1-1—left half cylinder; 1-2—right half cylinder; 1-3—trapezoidal notch;

[0024] 1-4—fastening hole; 1-5—circular hole channel; 1-11—semicircular carrier column;

[0025] 1-12—Stepped through hole; 1-13—Cylindrical blind hole; 1-14—Semicircular groove;

[0026] 1-15—yield portion; 2-1—left soil-squeezing blade; 2-11—arc-shaped groove;

[0027] 2-2—right soil-squeezing blade; 3-1—left oil cylinder; 3-11—first arc-shaped pad;

[0028] 3-2—right cylinder; 3-12—second arc-shaped pad. DETAILED DESCRIPTION

[0029] like Figures 1 to 4 The hydraulic soil squeezing blade shown includes two spliced ​​left semi-cylinders 1-1, a right semi-cylinder 1-2, a left soil squeezing blade 2-1 arranged along the outer wall of the left semi-cylinder 1-1, a right soil squeezing blade 2-2 arranged along the outer wall of the right semi-cylinder 1-2, and a left oil cylinder 3-1 for driving the left soil squeezing blade 2-1 to extend and retract, and a right oil cylinder 3-2 for driving the right soil squeezing blade 2-2 to extend and retract. The left oil cylinder 3-1 and the right oil cylinder 3-2 are embedded in the left semi-cylinder 1-1 and the right semi-cylinder 1-2, and the left soil squeezing blade 2-1 and the right soil squeezing blade 2-2 are both arc-shaped blades.

[0030] In this embodiment, the left semi-cylinder 1-1 and the right semi-cylinder 1-2 have the same structure, and both the left semi-cylinder 1-1 and the right semi-cylinder 1-2 include a semi-circular carrier column 1-11 and a cylindrical blind hole 1-13 and a step through hole 1-12 arranged on the semi-circular carrier column 1-11. The cylindrical blind hole 1-13 and the step through hole 1-12 on the semi-circular carrier column 1-11 are arranged alternately, and a cylindrical blind hole 1-13 on the left semi-cylinder 1-1 and a cylindrical blind hole 1-13 on the right semi-cylinder 1-2 are arranged alternately. A stepped through hole 1-12 on the semi-cylinder 1-2 corresponds to the installation of the right oil cylinder 3-2, a cylindrical blind hole 1-13 on the right semi-cylinder 1-2 and a stepped through hole 1-12 on the left semi-cylinder 1-1 correspond to the installation of the left oil cylinder 3-1, the piston rod of the left oil cylinder 3-1 extending from the left semi-cylinder 1-1 is connected to the left soil squeezing blade 2-1, and the piston rod of the right oil cylinder 3-2 extending from the right semi-cylinder 1-2 is connected to the right soil squeezing blade 2-2.

[0031] In this embodiment, the semicircular carrier column 1-11 is provided with two semicircular grooves 1-14 symmetrically arranged around the cylindrical blind hole 1-13 and the stepped through hole 1-12, and a yield portion 1-15 is provided at the connection between the plane and the arc surface of the semicircular carrier column 1-11. The yield portion 1-15 on the left semi-cylinder 1-1 and the yield portion 1-15 on the right semi-cylinder 1-2 are spliced ​​to form two symmetrically arranged trapezoidal notches 1-3, and the semicircular groove 1-14 on the left semi-cylinder 1-1 and the semicircular groove 1-14 on the right semi-cylinder 1-2 are spliced ​​to form a circular hole channel 1-5.

[0032] In this embodiment, a first arc-shaped pad 3-11 is provided at the end of the piston rod of the left oil cylinder 3-1, and the outer side wall of the first arc-shaped pad 3-11 is connected to the left soil squeezing blade 2-1;

[0033] A second arc-shaped pad 3-12 is provided at the end of the piston rod of the right oil cylinder 3-2, and the outer side wall of the second arc-shaped pad 3-12 is connected to the right soil squeezing blade 2-2.

[0034] In this embodiment, the semi-circular carrier column 1-11 is provided with a fastening hole 1-4, and the fastening bolt is arranged in the fastening hole 1-4 on the right half column 1-2 and the fastening hole 1-4 on the right half column 1-2.

[0035] In this embodiment, the outer side surface of the left and right soil squeezing blades 2-1 and 2-2 is segmented and provided with a plurality of arc-shaped grooves 2-11 arranged in parallel.

[0036] In this embodiment, in specific implementation, the outer side wall of the first arc-shaped pad 3-11 is connected to the left soil squeezing blade 2-1 by a bolt, and the outer side wall of the second arc-shaped pad 3-12 is connected to the right soil squeezing blade 2-2 by a bolt.

[0037] The first arc-shaped pad 3-11 and the second arc-shaped pad 3-12 are arranged to ensure that the surface connected to the piston rod is a plane, and the outer side wall of the semi-circular carrier column is provided with a clearance area matched with the arc-shaped pad, which facilitates the fitting of the soil squeezing blade when it is retracted.

[0038] In this embodiment, in specific implementation, the soil squeezing blade is arranged, and the outer side of the soil squeezing blade is tightly attached to the hole wall in the pre-formed hole, which is used to transmit the force output by the oil cylinder to the surrounding soil to squeeze and expand the hole.

[0039] In this embodiment, in specific implementation, the oil cylinder is a cylindrical body with a diameter of 88 mm and a height of 200 mm, and the hydraulic piston stroke of the oil cylinder is 150 mm.

[0040] In this embodiment, in specific implementation, the left oil cylinder 3-1 and the right oil cylinder 3-2 are each three, vertically distributed on both sides of the semi-circular carrier column, and the piston rod of each group of oil cylinders is connected to a side soil squeezing blade for simultaneously and synchronously ejecting and retracting the soil squeezing blade.

[0041] In this embodiment, in specific implementation, the stepped through hole 1-12 is a large-diameter hole with the same hole diameter as the cylindrical blind hole 1-13 and a small-diameter hole in communication with the large-diameter hole; the large-diameter hole and the cylindrical blind hole 1-13 are provided for the cylinder body of the left oil cylinder 3-1 and the right oil cylinder 3-2, and the piston rod of the left oil cylinder 3-1 and the right oil cylinder 3-2 passes through the small-diameter hole and extends out of the semi-circular carrier column 1-11 to be connected to the soil squeezing blade.

[0042] In this embodiment, in specific implementation, the two semi-circular carrier columns 1-11 are connected by seven fastening bolts in the height direction, so as to splice and fold the two semi-circular carrier columns 1-11 to form a whole.

[0043] In this embodiment, two oil cylinders and two soil-squeezing blades are provided during the specific implementation. The oil cylinders are used to realize power loading on the soil-squeezing blades, which expand outward to perform soil compaction and hole expansion operations. By performing vibration-free compaction and hole expansion deep into the pre-formed hole, the influence of vibration loads on nearby existing structures can be effectively reduced.

[0044] In this embodiment, during the specific implementation, two spliced ​​left half cylinders 1-1 and right half cylinders 1-2 are set to realize the embedded installation of the left oil cylinder 3-1 and the right oil cylinder 3-2 and facilitate the extension of the piston rod to connect the soil-squeezing blades, provide a bearing base, and effectively adapt to the pre-formed hole shape, with good overall compactness.

[0045] In this embodiment, during specific implementation, an extension rod can be set at the top of the semicircular carrier column 1-11 to move the soil-squeezing blade downward and recover it.

[0046] When the utility model is used, a pre-formed hole is drilled in a collapsible loess foundation, and the device is placed in the pre-formed hole. The left oil cylinder 3-1 and the right oil cylinder 3-2 are extended, and the left oil cylinder 3-1 and the right oil cylinder 3-2 are extended so that the left soil squeezing blade 2-1 and the right soil squeezing blade 2-2 fit the inner wall of the pre-formed hole. Then the left oil cylinder 3-1 and the right oil cylinder 3-2 continue to extend so that the left soil squeezing blade 2-1 and the right soil squeezing blade 2-2 expand outward to perform soil compaction operation. After that, the left oil cylinder 3-1 and the right oil cylinder 3-2 are depressurized and contracted, and the left soil squeezing blade 2-1 and the right soil squeezing blade 2-2 are retracted.

[0047] In summary, the utility model has a reasonable design and is easy to operate. It extends into the pre-formed hole in the collapsible loess foundation and applies lateral force through the cylinder to achieve vibration-free compaction and hole expansion. The hydraulic loading thrust is stable and reliable, and can effectively reduce the impact of vibration loads on adjacent existing structures.

[0048] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural change made to the above embodiment based on the technical essence of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A hydraulic soil squeezing blade, characterized in that The invention comprises two spliced ​​left semi-cylinders (1-1), a right semi-cylinder (1-2), a left soil squeezing blade (2-1) arranged along the outer wall of the left semi-cylinder (1-1), a right soil squeezing blade (2-2) arranged along the outer wall of the right semi-cylinder (1-2), and a left oil cylinder (3-1) for driving the left soil squeezing blade (2-1) to extend and retract, and a right oil cylinder (3-2) for driving the right soil squeezing blade (2-2) to extend and retract. The left oil cylinder (3-1) and the right oil cylinder (3-2) are embedded in the left semi-cylinder (1-1) and the right semi-cylinder (1-2). Both the left soil squeezing blade (2-1) and the right soil squeezing blade (2-2) are arc-shaped blades.

2. A hydraulic soil-squeezing blade according to claim 1, characterized in that: The left semi-cylinder (1-1) and the right semi-cylinder (1-2) have the same structure, and both the left semi-cylinder (1-1) and the right semi-cylinder (1-2) include a semi-circular carrier column (1-11) and a cylindrical blind hole (1-13) and a stepped through hole (1-12) arranged on the semi-circular carrier column (1-11). The cylindrical blind hole (1-13) and the stepped through hole (1-12) on the semi-circular carrier column (1-11) are arranged alternately. A cylindrical blind hole (1-13) on the left semi-cylinder (1-1) and a cylindrical blind hole (1-13) on the right semi-cylinder (1-2) are arranged alternately. A stepped through hole (1-12) on the right semi-cylinder (1-2) corresponds to the installation of the right oil cylinder (3-2), a cylindrical blind hole (1-13) on the right semi-cylinder (1-2) and a stepped through hole (1-12) on the left semi-cylinder (1-1) correspond to the installation of the left oil cylinder (3-1), a piston rod of the left oil cylinder (3-1) extending from the left semi-cylinder (1-1) is connected to the left soil squeezing blade (2-1), and a piston rod of the right oil cylinder (3-2) extending from the right semi-cylinder (1-2) is connected to the right soil squeezing blade (2-2).

3. A hydraulic soil-squeezing blade according to claim 2, characterized in that: The semicircular carrier column (1-11) is provided with two semicircular grooves (1-14) symmetrically arranged in the circumference of the cylindrical blind hole (1-13) and the stepped through hole (1-12); a yielding portion (1-15) is provided at the connection between the plane and the arc surface of the semicircular carrier column (1-11); the yielding portion (1-15) on the left semi-cylinder (1-1) and the yielding portion (1-15) on the right semi-cylinder (1-2) are spliced ​​to form two symmetrically arranged trapezoidal notches (1-3); the semicircular groove (1-14) on the left semi-cylinder (1-1) and the semicircular groove (1-14) on the right semi-cylinder (1-2) are spliced ​​to form a circular hole channel (1-5).

4. A hydraulic soil-squeezing blade according to claim 2, characterized in that: A first arc-shaped pad (3-11) is provided at the end of the piston rod of the left oil cylinder (3-1), and the outer side wall of the first arc-shaped pad (3-11) is connected to the left soil squeezing blade (2-1); A second arc-shaped pad (3-12) is provided at the end of the piston rod of the right oil cylinder (3-2), and the outer side wall of the second arc-shaped pad (3-12) is connected to the right soil squeezing blade (2-2).

5. The hydraulic soil-squeezing blade according to claim 2, characterized in that: The semicircular carrier column (1-11) is provided with a fastening hole (1-4), and the fastening hole (1-4) on the right semi-cylinder (1-2) and the fastening hole (1-4) on the right semi-cylinder (1-2) are connected by fastening bolts.

6. The hydraulic soil-squeezing blade according to claim 1, characterized in that: The outer side surfaces of the left soil squeezing blade (2-1) and the right soil squeezing blade (2-2) are provided with a plurality of arc-shaped grooves (2-11) arranged in parallel in sections.

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