Improved device for collapsible loess roadbed

Abstract

The utility model relates to the field of roadbed improvement equipment, and discloses a collapsible loess roadbed improvement device which comprises a lifting mechanism, a movable supporting mechanism, an inner shaft, a drill bit, a cavity, a liquid outlet hole, an outer sleeve, a transmission assembly, a stirring piece, an elastic assembly, a driving mechanism, a liquid guide sleeve and a liquid supply mechanism. The driving mechanism drives the elastic assembly and the stirring part to move in the direction away from the outer sleeve, so that the outer edge of the stirring part is located on the outer side of the drill bit, soil around the hole can be scattered through the stirring part in the rotary lifting process of the drill bit and the outer sleeve, and under the stirring action of the stirring part and the drill bit, the soil is prevented from falling off. The mixing uniformity of the liquid modifier and the soil can be improved.

Description

Technical Field

[0001] The utility model relates to the field of subgrade improvement equipment, in particular to an improvement device for collapsible loess subgrade. Background Art

[0002] The collapsible characteristics of collapsible loess subgrade will cause different degrees of harm to structures, resulting in large settlements, cracks, and tilts of the structures, and even seriously affecting their safety and use. Therefore, when building structures such as bridges and culverts in loess areas, it is necessary to have a reliable determination method and a comprehensive understanding of collapsible loess subgrade, and take correct engineering measures to prevent or eliminate its collapsibility.

[0003] One of the effective methods for treating collapsible loess subgrade is the chemical reinforcement method. A liquid modifier is injected into the subgrade soil, and gel substances are generated through chemical reactions or the surfaces of soil particles are activated to improve the strength of the soil.

[0004] Currently, when injecting a liquid modifier into subgrade soil, a perforated injection pipe is usually used to press it into the soil. In the process of using this method, there is a problem of poor uniformity in the mixing of the liquid modifier and the soil. Content of the Utility Model

[0005] Based on the above problems, the purpose of the utility model is to provide an improvement device for collapsible loess subgrade to solve the problems existing in the above-mentioned prior art.

[0006] The utility model adopts the following technical scheme:

[0007] The utility model provides an improvement device for collapsible loess subgrade, including:

[0008] A lifting mechanism, the lifting mechanism is arranged on a mobile support mechanism, a first rotary driving part is arranged on the action end of the lifting mechanism, the output shaft of the first rotary driving part extends downward and is power-connected to an inner shaft, the bottom of the inner shaft is connected with a drill bit, cavities are arranged inside both the drill bit and the inner shaft, the two cavities are communicated with each other, and liquid outlet holes communicated with the cavity are arranged on the drill bit;

[0009] An outer sleeve, the outer sleeve is rotatably sleeved on the outer wall of the inner shaft, and the outer sleeve is connected with the inner shaft through a transmission component;

[0010] A stirring member, the stirring member is arranged on the outside of the outer sleeve, an elastic component is connected to the stirring member, and the end of the elastic component movably penetrates into the inside of the outer sleeve;

[0011] A driving mechanism, the driving mechanism is arranged inside the outer sleeve, and the driving mechanism is connected with the end of the elastic component;

[0012] A liquid guiding sleeve, which is rotationally and sealingly sleeved on the top of the inner shaft, and the liquid guiding sleeve is connected to the moving end of the lifting mechanism through a connecting rod;

[0013] A liquid supply mechanism, which is arranged on the moving support mechanism, and the liquid supply mechanism is connected to the cavity of the inner shaft through the liquid guiding sleeve.

[0014] Furthermore, the elastic component includes a sliding rod connected to the stirring member. The end of the sliding rod horizontally slides through the inside of the outer sleeve and is connected to an end plate, and the driving mechanism is connected to the end plate; a spring is sleeved on one side of the sliding rod inside the outer sleeve, and both ends of the spring respectively abut against the end plate and the inner wall of the outer sleeve.

[0015] Still further, the driving mechanism includes a linear driving component one connected to the inner wall of the outer sleeve. A trapezoidal block is connected to the moving end of the linear driving component one, and the end plate abuts against an inclined surface of the trapezoidal block.

[0016] Still further, the moving support mechanism includes a bottom plate provided with a plurality of traveling wheels on the bottom surface. A support component is arranged on the bottom plate, and the lifting mechanism and the liquid supply mechanism are both arranged on the bottom plate.

[0017] Still further, the support component includes a plurality of vertically arranged linear driving components two, and the plurality of linear driving components two are arranged at intervals along the circumferential direction of the edge of the bottom plate; the moving end of the linear driving component two vertically moves through the bottom plate and is hinged to a support plate.

[0018] Still further, the lifting mechanism includes mounting sleeves vertically arranged on both sides of the bottom plate. A rack is slidably connected in the mounting sleeves. A lifting plate is arranged between the two racks. Through grooves vertically arranged are respectively arranged on one side of the two mounting sleeves close to each other. Both ends of the lifting plate respectively penetrate through the corresponding through grooves into the mounting sleeves and are connected to the side walls of the racks; a rotary driving component two is arranged on the outer wall of the top of the mounting sleeve through a connecting plate. A driving gear one is sleeved on the output shaft of the rotary driving component two, and the driving gear one is meshed and connected with the rack through an avoidance groove on the mounting sleeve.

[0019] Still further, the transmission component includes an internal gear ring fixed on the inner wall of the outer sleeve. An intermediate gear is meshed and connected in the internal gear ring, and the intermediate gear is rotationally connected to the inner wall of the outer sleeve through a rotating shaft; a driving gear two is sleeved on the outer periphery of the inner shaft, and the driving gear two is meshed and connected with the intermediate gear.

[0020] Compared with the prior art, the beneficial technical effects of the present utility model:

[0021] Driven by the provided driving mechanism, the elastic component and the stirring member move away from the outer sleeve, so that the outer side of the stirring member is located outside the drill bit. During the rotation and lifting of the drill bit and the outer sleeve, the soil around the hole can be dispersed by the stirring member. Under the agitation of the stirring member and the drill bit, the uniformity of the mixing of the liquid modifier and the soil can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present utility model will be further described below in conjunction with the drawings.

[0023] Figure 1 Schematic perspective view of the improvement device for collapsible loess subgrade of the present utility model;

[0024] Figure 2 Cross-sectional view of the outer sleeve of the present utility model;

[0025] Figure 3 Cross-sectional view of the liquid guide sleeve, inner shaft and drill bit of the present utility model;

[0026] Figure 4 Schematic perspective view of the liquid supply mechanism of the present utility model;

[0027] Figure 5 Schematic perspective view of the lifting mechanism and the mobile support mechanism of the present utility model;

[0028] Figure 6 Schematic perspective view of the drill bit of the present utility model.

[0029] Explanation of reference numerals in the drawings: 1, lifting mechanism; 101, mounting sleeve; 102, rack; 103, lifting plate; 104, through groove; 105, connecting plate; 106, second rotary drive member; 107, first drive gear; 108, avoidance groove; 2, mobile support mechanism; 201, bottom plate; 202, traveling wheel; 203, support assembly; 2031, second linear drive member; 2032, support plate; 3, first rotary drive member; 4, inner shaft; 401, liquid inlet hole; 5, drill bit; 501, liquid outlet hole; 6, cavity; 7, outer sleeve; 8, transmission assembly; 801, internal gear ring; 802, intermediate gear; 803, second drive gear; 9, stirring member; 10, elastic component; 1001, slide bar; 1002, end plate; 1003, spring; 11, driving mechanism; 111, first linear drive member; 112, trapezoidal block; 12, liquid guide sleeve; 13, connecting rod; 14, liquid supply mechanism; 141, liquid supply tank; 142, delivery pump; 143, delivery pipe; 144, flexible hose; 145, connecting pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model more clear and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0031] As Figures 1-6 shown, in this embodiment, an improved device for collapsible loess subgrade is disclosed, which includes a lifting mechanism 1. The lifting mechanism 1 is arranged on a moving support mechanism 2. A rotary driving component 1 is arranged on the moving end of the lifting mechanism 1. The output shaft of the rotary driving component 1 extends downward and is power-connected to an inner shaft 4. A drill bit 5 is fixedly connected to the bottom of the inner shaft 4. Cavities 6 are provided inside both the drill bit 5 and the inner shaft 4. The two cavities 6 are communicated with each other, and a liquid outlet hole 501 communicated with the cavity 6 is provided on the drill bit 5; an outer sleeve 7 is rotatably sleeved on the outer wall of the inner shaft 4, and the outer sleeve 7 is connected to the inner shaft 4 through a transmission component 8; a stirring member 9 is arranged on the outside of the outer sleeve 7, and an elastic component 10 is connected to the stirring member 9. The end of the elastic component 10 movably penetrates into the inside of the outer sleeve 7; a driving mechanism 11 is arranged inside the outer sleeve 7, and the driving mechanism 11 is connected to the end of the elastic component 10; a liquid guiding sleeve 12 is rotatably and sealingly sleeved on the top of the inner shaft 4, and the liquid guiding sleeve 12 is fixedly connected to the moving end of the lifting mechanism 1 through a connecting rod 13; a liquid supply mechanism 14 is arranged on the moving support mechanism 2, and the liquid supply mechanism 14 is connected to the cavity 6 of the inner shaft 4 through the liquid guiding sleeve 12.

[0032] In this embodiment, the rotary driving component 1 is set as a motor. The rotary driving component 1 drives the inner shaft 4 to rotate, and the inner shaft 4 drives the drill bit 5 to rotate. Under the action of the transmission component 8, the outer sleeve 7 is driven to rotate; the driving mechanism 11 can drive the elastic component 10 and the stirring member 9 to move away from or close to the outer sleeve 7.

[0033] During the drilling process, the lifting mechanism 1 drives the rotary driving component 1, the inner shaft 4 and the drill bit 5 to move downward as a whole. At the same time, the rotary driving component 1 drives the inner shaft 4 to rotate. At this time, the outer edge of the stirring member 9 is located inside the drill bit 5;

[0034] After the drilling is completed, the liquid supply mechanism 14 conveys a liquid modifier into the cavities 6 of the inner shaft 4 and the drill bit 5 through the liquid guiding sleeve 12 and sprays it out through the liquid outlet hole 501 on the drill bit 5; at the same time, the driving mechanism 11 drives the stirring member 9 to move away from the outer sleeve 7, so that the outer edge of the stirring member 9 extends to the outside of the drill bit 5; then, the lifting mechanism 1 drives the rotary driving component 1, the inner shaft 4 and the drill bit 5 to move upward as a whole. The rotary driving component 1 drives the inner shaft 4 to rotate. Under the action of the transmission component 8, the outer sleeve 7 is driven to rotate, and the outer sleeve 7 drives the stirring member 9 to rotate synchronously. The soil around the hole is broken up by the stirring member 9, and the broken-up soil can be quickly mixed with the liquid modifier sprayed out by the drill bit 5 under the stirring action of the stirring member 9 and the drill bit 5.

[0035] With this solution, the driving mechanism 11 drives the elastic component 10 and the stirring member 9 to move away from the outer sleeve 7, so that the outer edge of the stirring member 9 is located outside the drill bit 5. During the rotation and lifting of the drill bit 5 and the outer sleeve 7, the stirring member 9 can disperse the soil around the hole. Under the agitation of the stirring member 9 and the drill bit 5, the uniformity of the mixing of the liquid modifier and the soil can be improved.

[0036] In a further optimized solution, the elastic component 10 includes a sliding rod 1001 fixedly connected to the stirring member 9. The end of the sliding rod 1001 horizontally slides through the inner part of the outer sleeve 7 and is fixedly connected with an end plate 1002. The driving mechanism 11 is connected to the end plate 1002. A spring 1003 is sleeved on one side of the sliding rod 1001 inside the outer sleeve 7. The two ends of the spring 1003 respectively abut against the end plate 1002 and the inner wall of the outer sleeve 7. By driving the end plate 1002 to move through the driving mechanism 11, the end plate 1002 drives the sliding rod 1001 to slide horizontally. With the cooperation of the spring 1003, the effect of driving the stirring member 9 to move away from or close to the outer sleeve 7 can be achieved.

[0037] In a further optimized solution, the driving mechanism 11 includes a first linear driving component 111 fixedly connected to the inner wall of the outer sleeve 7. A trapezoidal block 112 is fixedly connected to the action end of the first linear driving component 111. The end plate 1002 abuts against one inclined surface of the trapezoidal block 112.

[0038] In this embodiment, the first linear driving component 111 is set as an electric push rod. When the action end of the first linear driving component 111 extends, the trapezoidal block 112 moves downward. By squeezing the end plate 1002 through the inclined surface of the trapezoidal block 112, the stirring member 9 can be driven to move away from the outer sleeve 7. At this time, the spring 1003 is in a compressed state. When the action end of the first linear driving component 111 shortens, the trapezoidal block 112 moves upward. Under the action of the resilience of the spring 1003, the stirring member 9 can be driven to move close to the outer sleeve 7.

[0039] In a further optimized solution, the transmission component 8 includes an internal gear ring 801 fixed to the inner wall of the outer sleeve 7. An intermediate gear 802 is meshed in the internal gear ring 801. The intermediate gear 802 is rotationally connected to the inner wall of the outer sleeve 7 through a rotating shaft. A second driving gear 803 is fixedly sleeved on the outer periphery of the inner shaft 4. The second driving gear 803 is meshed with the intermediate gear 802.

[0040] When the first rotation driving component 3 drives the inner shaft 4 to rotate, the second driving gear 803 drives the intermediate gear 802 to rotate, and the intermediate gear 802 drives the internal gear ring 801 to rotate, so as to achieve the effect of driving the outer sleeve 7 to rotate.

[0041] For a further optimized solution, a plurality of liquid inlet holes 401 are provided on the circumferential side wall of the inner shaft 4, and the plurality of liquid inlet holes 401 are all within the range surrounded by the liquid guide sleeve 12. The liquid modifier inside the liquid guide sleeve 12 can enter the cavity 6 of the inner shaft 4 through the liquid inlet holes 401.

[0042] For a further optimized solution, the liquid supply mechanism 14 includes a liquid supply tank 141 fixed on the bottom plate 201 and a transfer pump 142. The inlet end of the transfer pump 142 is fixedly communicated with the bottom of the liquid supply tank 141. The outlet end of the transfer pump 142 is fixedly connected with a transfer pipe 143. The end of the transfer pipe 143 is fixedly communicated with a connecting pipe 145 through a hose 144, and the connecting pipe 145 is fixedly communicated with the inside of the liquid guide sleeve 12.

[0043] For a further optimized solution, the mobile support mechanism 2 includes a bottom plate 201 provided with a plurality of walking wheels 202 on the bottom surface. A support assembly 203 is arranged on the bottom plate 201, and the lifting mechanism 1 and the liquid supply mechanism 14 are both arranged on the bottom plate 201.

[0044] In this embodiment, the number of the walking wheels 202 is four, and the four walking wheels 202 are arranged in a square on the bottom surface of the bottom plate 201; the support assembly 203 can support or release the support of the bottom plate 201; when it is necessary to move the position of the present utility model, the support assembly 203 is retracted, and after the support of the bottom plate 201 is released, the walking wheels 202 are in contact with the ground; when the present utility model moves to a designated position, the bottom plate 201 is lifted by the support assembly 203, which can improve the stability of the present utility model during operation.

[0045] For a further optimized solution, the support assembly 203 includes a plurality of linear driving components II 2031 arranged vertically. The plurality of linear driving components II 2031 are arranged at intervals along the circumferential direction of the edge of the bottom plate 201; the action end of the linear driving component II 2031 movably penetrates the bottom plate 201 downward and is hinged with a support plate 2032.

[0046] In this embodiment, the linear driving component II 2031 is set as an electric cylinder. The number of the linear driving components II 2031 is four, and the four linear driving components II 2031 are respectively arranged at the four corners of the bottom plate 201. The fixed end of the linear driving component II 2031 is fixedly connected with the bottom plate 201, and a spherical hinge is arranged between the action end of the linear driving component II 2031 and the support plate 2032. By means of the linear driving component II 2031 and making its action end extend or shorten, the effect of supporting or releasing the support of the bottom plate 201 can be achieved.

[0047] For a further optimized solution, the lifting mechanism 1 includes mounting sleeves 101 vertically fixed on both sides of the bottom plate 201. A rack 102 is slidably connected in the mounting sleeve 101. A lifting plate 103 is arranged between the two racks 102. Through grooves 104 arranged vertically are provided on one side of the two mounting sleeves 101 close to each other. The two ends of the lifting plate 103 respectively pass through the corresponding through grooves 104 into the mounting sleeve 101 and are fixedly connected to the side wall of the rack 102. A second rotary driving component 106 is fixedly mounted on the outer wall of the top of the mounting sleeve 101 through a connecting plate 105. A first driving gear 107 is fixedly sleeved on the output shaft of the second rotary driving component 106. The first driving gear 107 is meshed with the rack 102 through an avoidance groove 108 on the mounting sleeve 101.

[0048] It should be noted that the lifting plate 103 is the action end of the lifting mechanism 1 described in the present invention. The first rotary driving component 3 is fixedly mounted on the lifting plate 103. The connecting rod 13 on the top surface of the liquid guide sleeve 12 is fixedly connected to the lifting plate 103. Circular holes for the inner shaft 4, the drill bit 5, the outer sleeve 7 and the stirring member 9 to penetrate up and down are provided on the bottom plate 201.

[0049] In this embodiment, the second rotary driving component 106 is set as a self-locking motor. The second rotary driving component 106 drives the first driving gear 107 to rotate. The first driving gear 107 drives the rack 102 to slide up and down in the mounting sleeve 101. The rack 102 drives the lifting plate 103 to move synchronously, and the effect of moving the first rotary driving component 3, the inner shaft 4 and the drill bit 5 upward or downward integrally can be achieved.

[0050] The embodiments described above are only used to describe the preferred mode of the present invention, rather than to limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solution of the present invention should fall within the protection scope determined by the claims of the present invention.

Claims

1. A device for improving collapsible loess roadbed, characterized in that: include: A lifting mechanism (1), wherein the lifting mechanism (1) is arranged on a movable support mechanism (2), a rotary drive component (3) is arranged on an action end of the lifting mechanism (1), an output shaft of the rotary drive component (3) extends downward and is dynamically connected to an inner shaft (4), a drill bit (5) is connected to the bottom of the inner shaft (4), a cavity (6) is arranged inside the drill bit (5) and the inner shaft (4), the two cavities (6) are connected, and a liquid outlet hole (501) connected to the cavity (6) is arranged on the drill bit (5); An outer sleeve (7), the outer sleeve (7) being rotatably sleeved on the outer wall of the inner shaft (4), and the outer sleeve (7) being connected to the inner shaft (4) via a transmission assembly (8); a stirring member (9), the stirring member (9) being arranged on the outside of the outer sleeve (7), the stirring member (9) being connected to an elastic component (10), the end of the elastic component (10) being movable and penetrating into the interior of the outer sleeve (7); A driving mechanism (11), wherein the driving mechanism (11) is arranged inside the outer sleeve (7), and the driving mechanism (11) is connected to the end of the elastic component (10); A liquid guiding sleeve (12), wherein the rotating sealing sleeve of the liquid guiding sleeve (12) is arranged on the top of the inner shaft (4), and the liquid guiding sleeve (12) is connected to the action end of the lifting mechanism (1) through a connecting rod (13); A liquid supply mechanism (14), wherein the liquid supply mechanism (14) is arranged on the movable support mechanism (2), and the liquid supply mechanism (14) is connected to the cavity (6) of the inner shaft (4) through the liquid guide sleeve (12).

2. The device for improving collapsible loess roadbed according to claim 1, characterized in that: The elastic component (10) includes a sliding rod (1001) connected to the stirring member (9), the end of the sliding rod (1001) slides horizontally through the interior of the outer sleeve (7) and is connected to an end plate (1002), and the driving mechanism (11) is connected to the end plate (1002); a spring (1003) is sleeved on one side of the sliding rod (1001) located inside the outer sleeve (7), and the two ends of the spring (1003) respectively abut against the end plate (1002) and the inner wall of the outer sleeve (7).

3. The device for improving collapsible loess roadbed according to claim 2, characterized in that: The driving mechanism (11) comprises a linear driving component (111) connected to the inner wall of the outer sleeve (7); a trapezoidal block (112) is connected to the action end of the linear driving component (111); and the end plate (1002) abuts against an inclined surface of the trapezoidal block (112).

4. The device for improving collapsible loess roadbed according to claim 1, characterized in that: The mobile support mechanism (2) comprises a bottom plate (201) with a plurality of walking wheels (202) on the bottom surface, a support assembly (203) is arranged on the bottom plate (201), and the lifting mechanism (1) and the liquid supply mechanism (14) are both arranged on the bottom plate (201).

5. The device for improving collapsible loess roadbed according to claim 4, characterized in that: The support assembly (203) comprises a plurality of vertically arranged linear drive components (2031), wherein the plurality of linear drive components (2031) are arranged at intervals along the circumference of the edge of the base plate (201); the action end of the linear drive component (2031) moves downward through the base plate (201) and is hingedly connected to a support plate (2032).

6. The device for improving collapsible loess roadbed according to claim 4, characterized in that: The lifting mechanism (1) comprises a mounting sleeve (101) vertically arranged on both sides of the bottom plate (201), a rack (102) being slidably connected in the mounting sleeve (101), a lifting plate (103) being arranged between the two racks (102), a vertically arranged through slot (104) being arranged on the side where the two mounting sleeves (101) are close to each other, and two ends of the lifting plate (103) respectively penetrate into the mounting sleeve (101) through the corresponding through slots (104) and are connected to the side walls of the racks (102); a second rotating driving component (106) is arranged on the top outer wall of the mounting sleeve (101) through a connecting plate (105), a driving gear (107) is mounted on the output shaft of the second rotating driving component (106), and the driving gear (107) is meshed and connected with the rack (102) through an avoidance slot (108) on the mounting sleeve (101).

7. The device for improving collapsible loess roadbed according to claim 1, characterized in that: The transmission assembly (8) comprises an inner gear ring (801) fixed to the inner wall of the outer sleeve (7), an intermediate gear (802) being meshingly connected in the inner gear ring (801), and the intermediate gear (802) being rotatably connected to the inner wall of the outer sleeve (7) via a rotating shaft; a second driving gear (803) is sleeved on the outer periphery of the inner shaft (4), and the second driving gear (803) is meshingly connected to the intermediate gear (802).

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