Drill bit structure of single-shaft cement-soil mixing pile forming equipment

Abstract

The utility model relates to a drill bit structure of single-shaft cement mixing pile forming equipment, which belongs to the technical field of building construction and comprises a drill rod, a stabilizing ring is sleeved on the drill rod, and a plurality of clamping blocks are uniformly arranged on the inner side of the stabilizing ring along the circumferential direction. A plurality of clamping grooves corresponding to the clamping blocks in a one-to-one mode are evenly formed in the outer side face of the drill rod in the circumferential direction, pushing blocks are slidably clamped in the clamping grooves, electromagnetic blocks which are fixed in the clamping grooves and have magnetism after being powered on are arranged on the inner sides of the pushing blocks, and the pushing blocks and the electromagnetic blocks repel in magnetism; and a plurality of springs are further connected between the push block and the electromagnetic block, and when the outer side face of the push block is completely pushed out of the clamping groove, the push block is clamped with the clamping block. According to the utility model, operators can be helped to find out the deviation phenomenon of the drill rod in time, and the operators can be assisted in better completing the pouring of the mixing pile.

Description

Technical Field

[0001] The utility model relates to a drill bit structure of a single-axis cement soil mixing pile forming device, belonging to the technical field of building construction. Background Art

[0002] Cement mixing piles refer to an effective form of soft foundation treatment. It uses cement as the main agent of the curing agent. The cement is sprayed into the soil by a mixing pile machine and fully mixed, so that a series of physical and chemical reactions occur between the cement and the soil, which hardens the soft soil and improves the foundation strength. Cement mixing piles are divided into single-axis, double-axis and three-axis mixing piles according to the main construction methods used. In the 1970s, cement mixing piles began to be used to reinforce soft soil foundations, and it has a history of more than 40 years. It uses a special deep mixer to forcefully mix the soft soil and cement (curing agent), and uses a series of physical and chemical reactions between cement and soft soil to consolidate the soil, forming a cement soil pile with integrity, water stability and a certain strength.

[0003] Single-axis cement soil mixing piles usually only require a single mixing pile device, and the construction process is relatively simple and easy to operate. Multi-axis cement soil mixing piles may require multiple devices to work together, requiring more space and human resources. Therefore, when it is necessary to save construction steps, single-axis cement mixing piles are usually selected for construction. However, in the current single-axis cement soil mixing pile construction process, the mixing shaft is prone to deviation during the continuous drilling and vibration process. Since the drill rod drills faster, the construction personnel cannot well observe the deviation of the drill rod, so improvements are urgently needed. Utility Model Content

[0004] In order to overcome the shortcomings of the above-mentioned prior art, the utility model designs a drill bit structure of a single-axis cement-soil mixing pile forming equipment, which can help operators promptly discover the deviation of the drill rod and assist operators to better complete the pouring of the mixing pile.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A drill bit structure of a single-axis cement-soil mixing pile forming equipment comprises a drill rod, a stabilizing ring is sleeved on the drill rod, a plurality of clamping blocks are evenly arranged on the inner side of the stabilizing ring along the circumferential direction, a plurality of clamping grooves corresponding to the clamping blocks are evenly arranged on the outer side of the drill rod along the circumferential direction, a push block is slidably clamped in the clamping groove, an electromagnetic block fixed in the clamping groove and having magnetism after power is turned on is arranged on the inner side of the push block, the magnetism of the push block and the electromagnetic block repel each other, and a plurality of springs are connected between the push block and the electromagnetic block, and when the outer side surface of the push block is completely pushed out of the clamping groove, the push block and the clamping block are engaged.

[0007] Furthermore, the cross section of the push block is in a trapezoidal shape that is narrow at the top and wide at the bottom.

[0008] Furthermore, a plurality of small drill bits are arranged at the bottom end of the stabilizing ring.

[0009] Furthermore, a concentrically arranged collar is fixed to the top of the stabilizing ring, and a plurality of distance sensors are evenly arranged along the circumferential direction on the inner side of the collar.

[0010] Furthermore, a level sensor for detecting the horizontality of the collar is provided at the top of the collar.

[0011] Compared with the prior art, the utility model has the following characteristics and beneficial effects:

[0012] In the utility model, firstly, the electromagnetic block is energized to generate magnetic force, and the outer side of the push block is pushed out of the slot, so that the push block and the slot are engaged, and then during the drilling process of the drill rod, the stabilizing ring is driven to rotate, and the stabilizing ring is brought into the soil, so that the electromagnetic block loses its magnetic force, and the push block returns to the slot under the action of the spring, and the drill rod continues to drill. If the drill rod is offset and offsets by a certain angle, it will hit the stabilizing ring, thereby causing the position of the stabilizing ring to change. The operating personnel can easily observe the position change of the stabilizing ring, and can stop the machine in time to adjust the position of the drill rod to ensure smooth construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the installation structure of the utility model;

[0014] Figure 2 It is a partial cross-sectional schematic diagram of the drill rod of the utility model;

[0015] Figure 3 It is a cross-sectional schematic diagram of the stabilizing ring of the utility model.

[0016] The accompanying drawings are marked as follows: 1. drill rod; 2. stabilizing ring; 3. small drill bit; 4. collar; 5. level sensor; 6. electromagnetic block; 7. push block; 8. slot; 10. block; 11. spring. DETAILED DESCRIPTION

[0017] The present invention will be described in more detail below in conjunction with the embodiments.

[0018] like Figures 1 to 3As shown, a drill bit structure of a uniaxial cement-soil mixing pile forming equipment of the present embodiment comprises a drill rod 1, a stabilizing ring 2 is sleeved on the drill rod 1, a plurality of clamping blocks 10 are evenly arranged along the circumferential direction on the inner side of the stabilizing ring 2, a plurality of clamping grooves 8 corresponding to the clamping blocks 10 are evenly arranged along the circumferential direction on the outer side surface of the drill rod 1, a push block 7 is slidably clamped in the clamping groove 8, an electromagnetic block 6 fixed in the clamping groove 8 and having magnetism after being energized is arranged on the inner side of the push block 7, the magnetism of the push block 7 and the electromagnetic block 6 repel each other, and a plurality of springs 11 are connected between the push block 7 and the electromagnetic block 6, and when the outer side surface of the push block 7 is completely pushed out of the clamping groove 8, the push block 7 is engaged with the clamping block 10.

[0019] Specifically, the cross-section of the push block 7 is a trapezoidal setting that is narrow at the top and wide at the bottom, and the cross-section of the clamping block 10 is a trapezoidal setting that is wide at the top and narrow at the bottom. The push block 7 and the clamping block 10 are engaged by friction, and the outer side surface of the push block 7 and the inner side surface of the clamping block 10 are both inclined surfaces. Therefore, when installing the stabilizing ring 2, the installation position can be determined by the outer side surface of the push block 7 and the inner side surface of the clamping block 10, which is convenient for improving the installation efficiency.

[0020] In this embodiment, the push block 7 is slidably connected to the slot 8 , and the sliding distance is limited by the sliding grooves on the top and bottom walls of the slot 8 to prevent the push block 7 from exiting the slot 8 .

[0021] The working principle of this embodiment is as follows: first, the electromagnetic block 6 is powered on to generate magnetic force, and the outer side of the push block 7 is pushed out of the slot 8, so that the push block 7 is engaged with the block 10, and then during the drilling process of the drill rod 1, the stabilizing ring 2 is driven to rotate, and the stabilizing ring 2 is brought into the soil, so that the electromagnetic block 6 loses its magnetic force, and the push block 7 returns to the slot 8 under the action of the spring 11, and the drill rod 1 continues to drill. If the drill rod 1 deviates and deviates by a certain angle, it will hit the stabilizing ring 2, and then the position of the stabilizing ring 2 will change. The operator can easily observe the position change of the stabilizing ring 2, and can stop the machine in time to adjust the position of the drill rod 1 to ensure smooth construction.

[0022] Furthermore, a plurality of small drill bits 3 are provided at the bottom end of the stabilizing ring 2 to facilitate embedding the stabilizing ring 2 into the soil.

[0023] Furthermore, a concentrically arranged collar 4 is fixed on the top of the stabilizing ring 2, and a number of distance sensors are evenly arranged along the circumferential direction on the inner side of the collar 4. A level sensor 5 for detecting the horizontality of the collar 4 is arranged on the top of the collar 4, wherein the distance sensor and the level sensor 5 are both connected to the host computer, and a plurality of distance sensors cooperate to detect whether the drill rod 1 is vertically downward, and the level sensor 5 determines whether the drill rod 1 is vertically downward by detecting the horizontality of the collar 4, thereby further ensuring the stability of the drill rod during drilling.

[0024] In particular, an alarm device may be provided in conjunction with the distance sensor and the level sensor 5 to promptly sound an alarm when the drill rod 1 deviates to a certain extent.

[0025] In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of 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.

Claims

1. A drill bit structure for a uniaxial cement soil mixing pile forming device, characterized in that: The invention comprises a drill rod (1), wherein a stabilizing ring (2) is sleeved on the drill rod (1), a plurality of clamping blocks (10) are evenly arranged on the inner side of the stabilizing ring (2) along the circumferential direction, a plurality of clamping grooves (8) corresponding to the clamping blocks (10) are evenly arranged on the outer side of the drill rod (1) along the circumferential direction, a push block (7) is slidably clamped in the clamping groove (8), an electromagnetic block (6) fixed in the clamping groove (8) and having magnetism when powered is arranged on the inner side of the push block (7), the magnetic properties of the push block (7) and the electromagnetic block (6) repel each other, and a plurality of springs (11) are connected between the push block (7) and the electromagnetic block (6), and when the outer side surface of the push block (7) is completely pushed out of the clamping groove (8), the push block (7) is clamped with the clamping block (10).

2. The drill bit structure of the uniaxial cement soil mixing pile forming equipment according to claim 1 is characterized by: The cross section of the push block (7) is in the shape of a trapezoid which is narrow at the top and wide at the bottom.

3. The drill bit structure of the uniaxial cement soil mixing pile forming equipment according to claim 1 is characterized by: A plurality of small drill bits (3) are arranged at the bottom end of the stabilizing ring (2).

4. The drill bit structure of the uniaxial cement soil mixing pile forming equipment according to claim 1 is characterized by: A concentrically arranged collar (4) is fixed to the top of the stabilizing ring (2), and a plurality of distance sensors are evenly arranged along the circumferential direction on the inner side of the collar (4).

5. The drill bit structure of the uniaxial cement soil mixing pile forming equipment according to claim 4 is characterized by: The top end of the collar (4) is provided with a level sensor (5) for detecting the levelness of the collar (4).

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