Guiding device for mixing rod of cement-soil mixing pile

Abstract

The utility model relates to the technical field of foundation engineering, and discloses a cement soil mixing pile mixing rod guide device which comprises a supporting structure, a limiting structure arranged in the supporting structure, an inner sleeve rod arranged at the joint of the supporting structure and the limiting structure, a mixing structure arranged in the limiting structure, and a supporting frame. The left side and the right side of the supporting frame are fixedly connected with multiple sets of limiting plates, limiting holes are formed in the central axes of the limiting plates, the bottom end of the supporting frame is fixedly connected with four sets of supporting foot pads, the limiting plates fixed to the left side and the right side of the supporting frame limit the inner sleeve rod, and the limiting plates fixed to the left side and the right side of the supporting frame limit the inner sleeve rod. The two sets of limiting arc plates are arranged, the two sets of limiting arc plates form a ring shape, the stirring rod is wrapped in the limiting arc plates, the working range of the stirring rod is limited through the limiting arc plates, the stirring rod conducts vertical stirring, and the bearing force distribution of the pile body can be more uniform.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation engineering, and more specifically to a cement-soil mixing pile mixing rod guide device. Background Art

[0002] Cement-soil mixing piles are a commonly used foundation treatment method, primarily used to improve soil bearing capacity and increase foundation stability. The basic principle is to mechanically mix cement slurry with soil to form a pile body with a certain strength and stability. When cement-soil mixing piles are constructed using a pile driver, the mixing rod is typically exposed to the outside, without a limiting device at the bottom. This causes the rod to deflect as it penetrates deeper, leading to bending of the cement column. During construction, the mixing blade structure of the mixing rod is positioned at the lowest end, resulting in a smaller mixing zone and easily affecting mixing uniformity. The strength of the cement-soil mixing pile may vary in different locations, affecting its overall performance. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the utility model provides a cement-soil mixing pile mixing rod guide device to solve the problems existing in the above-mentioned background technology.

[0004] The utility model provides the following technical solutions:

[0005] A cement-soil mixing pile stirring rod guide device comprises a support structure and a stirring structure, the support structure is provided with a limiting structure, and the stirring structure is located in the limiting structure; the support structure comprises a support frame, and multiple groups of limiting plates are fixedly connected on the left and right sides of the support frame, and limiting holes are provided on the limiting plates. Four groups of supporting foot pads are fixedly connected to the bottom end of the support frame, and the supporting foot pads are fixed together with the pads by bolts; the limiting structure comprises two limiting arc plates, which limit and guide the stirring rod when the two limiting arc plates are closed, and fixing threaded holes are provided on both sides of the limiting arc plates. The two limiting arc plates are fixed together by first fixing bolts passing through the fixing threaded holes. The limiting arc plates are fixedly connected to multiple groups of connecting blocks outwardly, and the connecting blocks are fixedly connected to an inner sleeve rod outwardly. The inner sleeve rod passes through the limiting holes of the limiting plates. The inner sleeve rod can slide in the limiting plates. The outer ends of the inner sleeve rod are fixedly connected together by vertical baffles, and the baffles are located outside the support frame; the stirring structure comprises a stirring rod, multiple groups of stirring blades are fixed at the bottom of the stirring rod, and a plurality of stirring members are provided in the middle of the stirring rod.

[0006] Preferably, the stirring member includes a connecting sleeve, which is sleeved on the stirring rod and fixed to the stirring rod by a second fixing bolt, and the outer periphery of the connecting sleeve is fixedly connected to the stirring wing.

[0007] Preferably, four sets of stirring wings are fixed on the outer periphery of the connecting sleeve.

[0008] Beneficial effects of the utility model:

[0009] 1. Wrap the stirring rod inside, and the limit arc plate limits and guides the working range of the stirring rod. The stirring rod is in a vertical state, which can make the bearing capacity of the pile body more evenly distributed.

[0010] 2. Multiple sets of connecting sleeves are fixedly connected to the outside of the stirring rod via a second fixing bolt. The connecting sleeves are located in the middle of the stirring rod. During rotation, the stirring blades and connecting sleeves expand the stirring range, allowing the cement slurry, soil and other additives to be fully mixed, thus forming a pile with higher strength, better uniformity and better performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0012] Figure 2 It is an exploded schematic diagram of the overall structure of the utility model.

[0013] Figure 3 This is a schematic diagram of the support structure of the present utility model.

[0014] Figure 4 It is a schematic diagram of the limiting structure of the utility model.

[0015] Figure 5 This is a schematic diagram of the stirring structure of the present utility model.

[0016] The accompanying drawings are marked as follows: 1. Support structure; 101. Support frame; 102. Limiting plate; 103. Support foot pad; 104. Pad; 2. Limiting structure; 201. Limiting arc plate; 202. Fixing threaded hole; 203. First fixing bolt; 204. Connecting block; 205. Inner sleeve rod; 206. Baffle; 3. Stirring structure; 301. Stirring rod; 302. Stirring blade; 303. Connecting sleeve; 304. Stirring wing; 305. Second fixing bolt. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely examples. The foundation engineering involved in the present invention is not limited to the various structures recorded in the following embodiments. All other implementations obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0018] This embodiment includes a support structure 1, within which a limiting structure 2 is disposed, and within which a mixing structure 3 is disposed. The support structure 1 includes a support frame 101, with multiple sets of limiting plates 102 fixedly connected to the left and right sides of the support frame 101. The limiting plates 102 are fixed to the rectangular frames on both sides of the support frame 101. The limiting plates 102 have limiting holes defined therein. The diameter of the limiting holes on the limiting plates 102 is the same as the diameter of the inner sleeve rod 205 of the limiting structure 2. Four sets of support pads 103 are fixedly connected to the bottom end of the support frame 101. The top surfaces of the support pads 103 have threaded fixing holes defined therein. A backing plate 104 is connected to the bottom end of the support pads 103. The top surface of the backing plate 104 has four sets of threaded fixing holes defined therein. The threaded fixing holes of the backing plate 104 correspond to the threaded fixing holes of the support pads 103. The support pads 103 and the backing plate 104 are fixed together by bolts. The backing plate 104 has a square hole in the middle for the mixing rod 301 of the pile mixing machine to pass through.

[0019] The limiting structure 2 includes two left and right limiting arc plates 201, which are located inside the support frame 101. Fixed threaded holes 202 are provided on both sides of the limiting arc plates 201, and the two limiting arc plates 201 are fixed together by first fixing bolts 203 passing through the fixed threaded holes 202. The inner diameter of the circle enclosed by the two limiting arc plates 201 when closed and fixed together is equal to the outer diameter of the stirring rod 301. The two limiting arc plates 201 function to vertically guide and limit the stirring rod 301 of the stirring structure 3. The limiting arc plates 201 are fixedly connected to multiple groups of connecting blocks 204 on the outside, and the multiple groups of connecting blocks 204 are evenly distributed on the outer surface of the limiting arc plates 201 from top to bottom. The connecting blocks 204 are fixedly connected to the inside of the inner sleeve rods 205, which pass through the limiting holes on the corresponding limiting plates 102 respectively. The inner sleeve rods 205 can slide inside the limiting plates 102, so that the two limiting arc plates 201 can be closed or separated. The outer ends of the plurality of inner sleeve rods 205 are connected together by a vertical baffle 206 , and the baffle 206 is located outside the support frame 101 .

[0020] The stirring structure 3 includes a stirring rod 301, and a plurality of stirring blades 302 are fixedly connected to the bottom of the stirring rod 301. A plurality of connecting sleeves 303 are also provided above the stirring blades 302, and four groups of stirring wings 304 are fixedly connected to the periphery of each connecting sleeve 303. The plurality of connecting sleeves 303 are located in the middle of the stirring rod 301 and are distributed up and down along the stirring rod 301. The connecting sleeve 303 is sleeved on the stirring rod 301, and corresponding threaded holes are provided on the stirring rod 301 and the connecting sleeve 303. The connecting sleeve 303 is fixed together by a second fixing bolt 305 passing through the threaded hole. When the stirring rod 301 rotates, the stirring range of the stirring blades 302 and the connecting sleeve 303 becomes larger, and is no longer limited to stirring at the bottom. The middle part also has a stirring effect, and the stirring range can also be adjusted according to the number of connecting sleeves 303 installed.

[0021] During use, the pad 104 is first laid on the hole of the cement soil mixing pile, and then the support frame 101 is fixedly connected together through the support foot pad 103 and the pad 104. At this time, the two limit arc plates 201 are in the open state. The middle part of the stirring rod 301 connected to the mixing pile machine is fixedly connected to several sleeves 303 as needed through the second fixing bolt 305. First, the stirring rod 301 is moved downward so that the connecting sleeve 303 is located below the limit arc plate 201. Then the two sets of limit arc plates 201 are closed and fixed together. The limit arc plate 201 limits and guides the stirring rod 301 so that the stirring rod 301 is in a vertical stirring state. When the stirring rod 301 rotates, it drives the stirring blade 302, the connecting sleeve 303 and the stirring wing 304 to rotate, so that the cement slurry, soil and other additives are fully mixed. The stirring range in the cement soil mixing pile is larger than that of the conventional stirring rod, thereby forming a pile body with higher strength and better uniformity.

[0022] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A cement-soil mixing pile mixing rod guide device, comprising a support structure (1) and a mixing structure (3), characterized in that: The support structure (1) is provided with a limiting structure (2), and the stirring structure (3) is located in the limiting structure (2); the support structure (1) includes a support frame (101), and the left and right sides of the support frame (101) are fixedly connected to multiple groups of limiting plates (102), and the limiting plates (102) are provided with limiting holes. The bottom end of the support frame (101) is fixedly connected to four groups of supporting pads (103), and the supporting pads (103) are fixed together with the pads (104) by bolts; the limiting structure (2) includes two limiting arc plates (201), and after the two limiting arc plates (201) are closed, the two limiting arc plates (201) are used to limit and guide the stirring rod (301), and fixing threaded holes (202) are provided on both sides of the limiting arc plates (201), and the two limiting arc plates (201) are fixed together by first fixing bolts (203) passing through the fixing threaded holes (202). The limiting arc plate (201) is fixedly connected to multiple groups of connecting blocks (204) outwardly, and the connecting blocks (204) are fixedly connected to the inner sleeve rod (205) outwardly. The inner sleeve rod (205) passes through the limiting hole of the limiting plate (102). The inner sleeve rod (205) can slide in the limiting plate (102). The outer ends of the inner sleeve rod (205) are fixedly connected together through a vertical baffle (206), and the baffle (206) is located outside the support frame (101); the stirring structure (3) includes a stirring rod (301), multiple groups of stirring blades (302) are fixed at the bottom of the stirring rod (301), and a plurality of stirring members are provided in the middle of the stirring rod (301).

2. A cement-soil mixing pile mixing rod guide device according to claim 1, characterized in that: The stirring member comprises a connecting sleeve (303), the connecting sleeve (303) being sleeved on the stirring rod (301), the connecting sleeve (303) being fixed to the stirring rod (301) via a second fixing bolt (305), and the outer periphery of the connecting sleeve (303) being fixedly connected to the stirring wing (304).

3. The cement-soil mixing pile mixing rod guide device according to claim 2, characterized in that: Four sets of stirring wings (304) are fixed on the outer periphery of the connecting sleeve (303).

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