Calabash-shaped hole expanding device based on non-Newtonian fluid and hole expanding method

Abstract

The present invention discloses a gourd-shaped hole expanding device based on non-Newtonian fluid and a hole expanding method. The gourd-shaped hole expanding device based on non-Newtonian fluid includes a hole expanding rod, a first pressing rod, a first elastic rod, a second pressing rod and a second elastic rod. A plurality of placing grooves are provided on the outer peripheral wall of the hole expanding rod. The first pressing rod is connected to the first end of the hole expanding rod, and the first pressing rod is axially slidable along the hole expanding rod. Both ends of the first elastic rod are respectively connected to the first pressing rod and the hole expanding rod, and non-Newtonian fluid is filled in the first elastic rod. The second pressing rod is connected to the second end of the hole expanding rod, and the second pressing rod is axially slidable along the hole expanding rod. Both ends of the second elastic rod are respectively connected to the second pressing rod and the hole expanding rod, and non-Newtonian fluid is filled in the second elastic rod. The gourd-shaped hole expanding device based on non-Newtonian fluid of the present invention expands the anchor hole and makes the cross-sectional shape of the expanded anchor hole be two arc-shaped surfaces, increasing the hole expanding volume and improving the anchoring force and shear resistance.

Description

Technical Field

[0001] The present invention belongs to the technical field of roadway support, and particularly relates to a gourd-shaped hole expanding device and a hole expanding method based on non-Newtonian fluid. Background Art

[0002] As the geology and geological conditions of mines become increasingly complex, especially when roadways pass through soft and broken surrounding rock sections, it is difficult to support with bolts (cables) at this time, and it is difficult to have a high anchoring force. It is necessary to increase the density of support, resulting in waste of support materials. To solve this problem, it is necessary to enhance the anchoring force and shear resistance of a single bolt (cable). In related technologies, generally, the hole expanding method is used to enhance the anchoring force and shear resistance of a single bolt (cable). However, in the existing hole expanding methods, the anchor holes are generally expanded into wedge-shaped holes and diamond-shaped holes, and the hole expanding area is small, so the enhancement of the anchoring force and shear resistance of a single bolt (cable) is limited. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems in the related technologies to some extent. For this reason, an embodiment of the present invention provides a gourd-shaped hole expanding device based on non-Newtonian fluid. Through the arrangement of the first elastic rod and the second elastic rod, the cross-sectional shape of the anchor hole after hole expansion is two arc surfaces, increasing the hole expanding volume and improving the anchoring force and shear resistance.

[0004] An embodiment of the second aspect of the present invention also provides a hole expanding method.

[0005] The gourd-shaped hole expanding device based on non-Newtonian fluid in the embodiment of the present invention includes a hole expanding rod, a first pressing rod, a first elastic rod, a second pressing rod, and a second elastic rod. The hole expanding rod is a hollow cylinder, and a plurality of placing grooves are provided on the outer peripheral wall of the hole expanding rod. The plurality of placing grooves are spaced along the circumferential direction of the hole expanding rod. The length of the placing groove extends along the axial direction of the hole expanding rod. The first pressing rod is connected to the first end of the hole expanding rod, and the first pressing rod is slidable along the axial direction of the hole expanding rod. There are a plurality of first elastic rods, and the plurality of first elastic rods correspond to the plurality of placing grooves one by one. The first elastic rod is located in the corresponding placing groove. Two ends of the first elastic rod are respectively connected to the first pressing rod and the hole expanding rod. The first elastic rod is a hollow cylinder, and non-Newtonian fluid is filled in the first elastic rod. The second pressing rod is connected to the second end of the hole expanding rod, and the second pressing rod is slidable along the axial direction of the hole expanding rod. There are a plurality of second elastic rods, and the plurality of second elastic rods correspond to the plurality of placing grooves one by one. The second elastic rod is located in the corresponding placing groove. Two ends of the second elastic rod are respectively connected to the second pressing rod and the hole expanding rod. The second elastic rod is a hollow cylinder, and non-Newtonian fluid is filled in the second elastic rod.

[0006] In the embodiment of the present invention, in the gourd-shaped hole expanding device based on non-Newtonian fluid, when a thrust is applied to the first pressing rod and the second pressing rod through the arrangement of the first elastic rod and the second elastic rod, the first pressing rod and the hole expanding rod squeeze the first elastic rod to make the first elastic rod bend towards the hole wall of the anchor hole, and the second pressing rod and the hole expanding rod squeeze the second elastic rod to make the second elastic rod bend towards the hole wall of the anchor hole. The first elastic rod and the second elastic rod simultaneously expand the anchor hole and make the cross-sectional shape of the expanded anchor hole be two arc surfaces, increasing the hole expanding volume and improving the anchoring force and shear resistance.

[0007] In some embodiments, a plurality of first rock-breaking members are provided on the first elastic rod, and the plurality of first rock-breaking members are spaced apart along the axial direction of the first elastic rod; a plurality of second rock-breaking members are provided on the second elastic rod, and the plurality of second rock-breaking members are spaced apart along the axial direction of the second elastic rod.

[0008] In some embodiments, both the first rock-breaking member and the second rock-breaking member are diamonds.

[0009] In some embodiments, a first guiding groove is provided on the first pressing rod, the length of the first guiding groove is arranged along the axial direction of the hole expanding rod, a first guiding member is provided on the hole expanding rod, and the first guiding member is located in the first guiding groove; a second guiding groove is provided on the second pressing rod, the length of the second guiding groove is arranged along the axial direction of the hole expanding rod, a second guiding member is provided on the hole expanding rod, and the second guiding member is located in the second guiding groove.

[0010] In some embodiments, there are a plurality of first guiding grooves and a plurality of first guiding members. The plurality of first guiding grooves are spaced apart along the circumferential direction of the hole expanding rod, the plurality of first guiding members correspond to the plurality of first guiding grooves one by one, and the first guiding member is located in the corresponding first guiding groove; there are a plurality of second guiding grooves and a plurality of second guiding members. The plurality of second guiding grooves are spaced apart along the circumferential direction of the hole expanding rod, the plurality of second guiding members correspond to the plurality of second guiding grooves one by one, and the second guiding member is located in the corresponding second guiding groove.

[0011] In some embodiments, the hole expanding rod includes a rod body and a connecting member. The connecting member is connected to the rod body. The first end of the first elastic rod is connected to the first pressing rod, the second end of the first elastic rod is connected to the connecting member, the first end of the second elastic rod is connected to the connecting member, and the second end of the second elastic rod is connected to the second pressing rod.

[0012] In some embodiments, the non-Newtonian fluid-based gourd-shaped hole expanding device further includes a first elastic member and a second elastic member. Both the first elastic member and the second elastic member are disposed within the hole expanding rod. Two ends of the first elastic member are respectively connected to the first pressing rod and the connecting member, and two ends of the second elastic member are respectively connected to the second pressing rod and the connecting member.

[0013] In some embodiments, the connecting member is located at one-third of the rod body close to the second pressing rod.

[0014] In some embodiments, the non-Newtonian fluid-based gourd-shaped hole expanding device further includes a top iron, and the top iron is connected to one end of the second pressing rod away from the hole expanding rod.

[0015] A hole expanding method according to a second aspect embodiment of the present invention includes:

[0016] Providing a hole expanding device, where the hole expanding device is the non-Newtonian fluid-based gourd-shaped hole expanding device described in any one of the above embodiments. Sending the hole expanding device to the bottom of the anchor hole through a drilling rig and continuously applying a thrust force. The first elastic rod bends towards the hole wall of the anchor hole under the thrust of the first pressing rod and the hole expanding rod, and the second elastic rod bends towards the hole wall of the anchor hole under the thrust of the second pressing rod and the hole expanding rod;

[0017] Starting the drilling rig, the high-speed rotation of the drilling rig drives the first elastic rod and the second elastic rod to rotate around the axis of the hole expanding rod. The non-Newtonian fluid within the first elastic rod and the second elastic rod becomes solid under high-speed rotation to enhance the strength of the first elastic rod and the second elastic rod. The first elastic rod and the second elastic rod expand the anchor hole;

[0018] Gradually increasing the thrust force of the drilling rig on the hole expanding device, causing both the first elastic member and the second elastic member to further bend towards the hole wall of the anchor hole until the expansion of the anchor hole is completed;

[0019] Closing the drilling rig, gradually reducing the thrust force on the hole expanding device, and withdrawing the hole expanding device from the anchor hole.

[0020] The hole expanding method according to the embodiments of the present invention uses the non-Newtonian fluid-based gourd-shaped hole expanding device described in the above embodiments to expand the anchor hole and makes the cross-sectional shape of the expanded anchor hole be two arc surfaces, increasing the expanded volume and improving the anchoring force and shear resistance. Description of the Drawings

[0021] Figure 1 is a three-dimensional schematic diagram of the non-Newtonian fluid-based gourd-shaped hole expanding device according to the embodiments of the present invention.

[0022] Figure 2 is the partial enlarged view a in the present invention Figure 1 in the present invention

[0023] Figure 3 is the front view of the gourd-shaped hole expanding device based on non-Newtonian fluid according to an embodiment of the present invention

[0024] Figure 4 is the present invention Figure 3 is the sectional view taken along the line A-A in the present invention

[0025] Figure 5 is Figure 4 the partial enlarged view b in the present invention

[0026] Reference numerals

[0027] Hole expanding rod 1; Placing groove 11; Rod body 12; Connecting member 13

[0028] First pressing rod 2; First guiding groove 21

[0029] First elastic rod 3; First rock breaking member 31

[0030] Second pressing rod 4; Second guiding groove 41

[0031] Second elastic rod 5; Second rock breaking member 51

[0032] First elastic member 6

[0033] Second elastic member 7

[0034] Top iron 8 Detailed implementation manners

[0035] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention

[0036] The gourd-shaped hole expanding device based on non-Newtonian fluid according to the embodiments of the present invention will be described below with reference to the drawings

[0037] As Figures 1-5 shown, the gourd-shaped hole expanding device based on non-Newtonian fluid according to the embodiments of the present invention includes a hole expanding rod 1, a first pressing rod 2, a first elastic rod 3, a second pressing rod 4 and a second elastic rod 5

[0038] Among them, the hole expanding rod 1 is a hollow cylinder, and a plurality of placing grooves 11 are provided on the outer peripheral wall of the hole expanding rod 1. The plurality of placing grooves 11 are spaced apart along the circumferential direction of the hole expanding rod 1, and the length of the placing groove 11 extends along the axial direction of the hole expanding rod 1

[0039] The first pressing rod 2 is connected to the first end of the hole expanding rod 1 (such asFigure 1 At the left end shown, the first pressing rod 2 is axially slidable along the reaming rod 1. There are multiple first elastic rods 3, and the multiple first elastic rods 3 correspond to the multiple placement grooves 11 one by one. The first elastic rod 3 is located in the corresponding placement groove 11. The left end of the first elastic rod 3 is connected to the first pressing rod 2, and the right end of the first elastic rod 3 is connected to the outer peripheral wall of the reaming rod 1. The first elastic rod 3 is a hollow cylinder, and the first elastic rod 3 is filled with non-Newtonian fluid. When the first pressing rod 2 slides to the right relative to the reaming rod 1, the first pressing rod 2 and the reaming rod 1 compress the first elastic rod 3. Since the two ends of the first elastic rod 3 are respectively connected to the first pressing rod 2 and the reaming rod 1, the middle part of the first elastic rod 3 bends in the radial direction of the reaming rod 1 away from the axis of the reaming rod 1. When the reaming rod 1 rotates to drive the first elastic rod 3 to rotate, the first elastic rod 3 reams the anchor hole;

[0040] The second pressing rod 4 is connected to the second end of the reaming rod 1 (such as Figure 1 At the right end shown), the second pressing rod 4 is axially slidable along the reaming rod 1. There are multiple second elastic rods 5, and the multiple second elastic rods 5 correspond to the multiple placement grooves 11 one by one. The second elastic rod 5 is located in the corresponding placement groove 11. The left end of the second elastic rod 5 is connected to the outer peripheral wall of the reaming rod 1, and the right end of the second elastic rod 5 is connected to the second pressing rod 4. The second elastic rod 5 is a hollow cylinder, and the second elastic rod 5 is filled with non-Newtonian fluid. When the first pressing rod 2 slides to the left relative to the reaming rod 1, the first pressing rod 2 and the reaming rod 1 compress the first elastic rod 3. Since the two ends of the second elastic rod 5 are respectively connected to the second pressing rod 4 and the reaming rod 1, the middle part of the second elastic rod 5 bends in the radial direction of the reaming rod 1 away from the axis of the reaming rod 1. When the reaming rod 1 rotates to drive the second elastic rod 5 to rotate, the second elastic rod 5 reams the anchor hole.

[0041] In the calabash-shaped reaming device based on non-Newtonian fluid according to the embodiment of the present invention, through the arrangement of the first elastic rod 3 and the second elastic rod 5, when a thrust is applied to the first pressing rod 2 and the second pressing rod 4, the first pressing rod 2 and the reaming rod 1 squeeze the first elastic rod 3 to make the first elastic rod 3 bend towards the hole wall of the anchor hole, and the second pressing rod 4 and the reaming rod 1 squeeze the second elastic rod 5 to make the second elastic rod 5 bend towards the hole wall of the anchor hole. The first elastic rod 3 and the second elastic rod 5 simultaneously ream the anchor hole and make the cross-sectional shape of the reamed anchor hole be two arc surfaces, increasing the reaming volume, improving the anchoring force and shear resistance, and moreover, the non-Newtonian fluid in the first elastic rod 3 and the second elastic rod 5 is in a solid state when rotating at high speed, improving the strength of the first elastic rod 3 and the second elastic rod 5.

[0042] Optionally, the placement groove 11 is a through groove. The left end of the first elastic rod 3 penetrates through the reaming rod 1 and is placed inside the reaming rod 1, and the right end of the second elastic rod 5 penetrates through the reaming rod 1 and is placed inside the reaming rod 1.

[0043] Optionally, the first pressing rod 2 is provided with threads matching the output shaft of the drill, facilitating the connection between the non-Newtonian fluid-based gourd-shaped hole enlarging device and the drill.

[0044] As Figures 1-5 shown, in some embodiments, a plurality of first rock-breaking members 31 are provided on the first elastic rod 3, and the plurality of first rock-breaking members 31 are spaced apart along the axial direction of the first elastic rod 3. The first rock-breaking members 31 are located on the side of the first elastic rod 3 away from the axis of the hole enlarging rod 1; a plurality of second rock-breaking members 51 are provided on the second elastic rod 5, and the plurality of second rock-breaking members 51 are spaced apart along the axial direction of the second elastic rod 5. The second rock-breaking members 51 are located on the side of the second elastic rod 5 away from the axis of the hole enlarging rod 1.

[0045] Furthermore, both the first rock-breaking members 31 and the second rock-breaking members 51 are diamonds.

[0046] Thus, in these embodiments, the non-Newtonian fluid-based gourd-shaped hole enlarging device of the embodiment of the present invention improves the hole enlarging effect of the non-Newtonian fluid-based gourd-shaped hole enlarging device through the arrangement of the first rock-breaking members 31 and the second rock-breaking members 51.

[0047] As Figures 1-4 shown, in some embodiments, a first guiding groove 21 is provided on the first pressing rod 2. The length of the first guiding groove 21 is arranged along the axial direction of the hole enlarging rod 1. A first guiding member is provided on the hole enlarging rod 1, and the first guiding member is located in the first guiding groove 21. The first guiding groove 21 and the first guiding member limit the relative rotation and relative sliding distance between the first pressing rod 2 and the hole enlarging rod 1; a second guiding groove 41 is provided on the second pressing rod 4. The length of the second guiding groove 41 is arranged along the axial direction of the hole enlarging rod 1. A second guiding member is provided on the hole enlarging rod 1, and the second guiding member is located in the second guiding groove 41. The second guiding groove 41 and the second guiding member limit the relative rotation and relative sliding distance between the second pressing rod 4 and the hole enlarging rod 1.

[0048] Furthermore, there are a plurality of first guiding grooves 21 and first guiding members. The plurality of first guiding grooves 21 are spaced apart along the circumferential direction of the hole enlarging rod 1. The plurality of first guiding members correspond to the plurality of first guiding grooves 21 one by one, and the first guiding member is located in the corresponding first guiding groove 21; there are a plurality of second guiding grooves 41 and second guiding members. The plurality of second guiding grooves 41 are spaced apart along the circumferential direction of the hole enlarging rod 1. The plurality of second guiding members correspond to the plurality of second guiding grooves 41 one by one, and the second guiding member is located in the corresponding second guiding groove 41.

[0049] Thus, through the arrangement of the first guiding groove 21, the gourd-shaped hole expanding device based on non-Newtonian fluid according to the embodiment of the present invention prevents relative rotation between the first pressing rod 2 and the hole expanding rod 1, and through the arrangement of the second guiding groove 41, it prevents rotation between the second pressing rod 4 and the hole expanding rod 1, thereby preventing relative rotation between the first guiding rod and / or the second guiding rod and the hole expanding rod 1, and further preventing the first elastic rod 3 and / or the second elastic rod 5 from retracting, which may cause abnormal hole expansion failure.

[0050] As Figure 1 , Figures 3-5 shown, in some embodiments, the hole expanding rod 1 includes a rod body 12 and a connecting member 13. The connecting member 13 is connected to the rod body 12. The first end of the first elastic rod 3 (such as Figure 1 the left end shown) is connected to the first pressing rod 2, and the second end of the first elastic rod 3 (such as Figure 1 the right end shown) is connected to the connecting member 13. The first end of the second elastic rod 5 (such as Figure 1 the left end shown) is connected to the connecting member 13, and the second end of the second elastic rod 5 (such as Figure 1 the right end shown) is connected to the second pressing rod 4.

[0051] As Figure 4 and Figure 5 shown, further, the gourd-shaped hole expanding device based on non-Newtonian fluid further includes a first elastic member 6 and a second elastic member 7. Both the first elastic member 6 and the second elastic member 7 are arranged inside the hole expanding rod 1. The left end of the first elastic member 6 is connected to the first pressing rod 2, and the right end of the first elastic member 6 is connected to the connecting member 13. The first elastic member 6 gives a leftward thrust to the first pressing rod 2, causing the first pressing rod 2 to slide leftward relative to the hole expanding rod 1 under the thrust of the first elastic member 6. The left end of the second elastic member 7 is connected to the connecting member 13, and the right end of the second elastic member 7 is connected to the second pressing rod 4. The second elastic member 7 gives a rightward thrust to the second pressing rod 4, causing the second pressing rod 4 to slide rightward relative to the hole expanding rod 1 under the thrust of the second elastic member 7.

[0052] As Figure 1 and Figure 3 shown, further, the connecting member 13 is located at one-third of the rod body 12 close to the second pressing rod 4, making the lengths of the first elastic rod 3 and the second elastic rod 5 unequal, so that the cross-sectional shape of the anchor hole after being expanded by the first elastic rod 3 and the second elastic rod 5 is two arc surfaces with unequal areas (i.e., gourd-shaped).

[0053] As Figure 1 shown, in some embodiments, the gourd-shaped hole expanding device based on non-Newtonian fluid further includes a top iron 8, and the top iron 8 is connected to one end of the second pressing rod 4 away from the hole expanding rod 1.

[0054] The hole expanding method according to the second aspect embodiment of the present invention includes:

[0055] Provide a hole enlarging device, which is a gourd-shaped hole enlarging device based on non-Newtonian fluid according to any one of the above embodiments. The hole enlarging device is sent to the bottom of the anchor hole by a drilling rig, and a thrust is continuously applied. The first elastic rod 3 bends towards the hole wall of the anchor hole under the thrust of the first pressing rod 2 and the hole enlarging rod 1, and the second elastic rod 5 bends towards the hole wall of the anchor hole under the thrust of the second pressing rod 4 and the hole enlarging rod 1;

[0056] Start the drilling rig. The high-speed rotation of the drilling rig drives the first elastic rod 3 and the second elastic rod 5 to rotate around the axis of the hole enlarging rod 1. The non-Newtonian fluid in the first elastic rod 3 and the second elastic rod 5 becomes solid under high-speed rotation to enhance the strength of the first elastic rod 3 and the second elastic rod 5. The first elastic rod 3 and the second elastic rod 5 enlarge the anchor hole;

[0057] Gradually increase the thrust of the drilling rig on the hole enlarging device, so that both the first elastic member 6 and the second elastic member 7 further bend towards the hole wall of the anchor hole until the anchor hole is completely enlarged;

[0058] Turn off the drilling rig, gradually reduce the thrust on the hole enlarging device, and withdraw the hole enlarging device from the anchor hole.

[0059] The hole enlarging method of the embodiment of the present invention uses the gourd-shaped hole enlarging device based on non-Newtonian fluid according to the above embodiment to enlarge the anchor hole and make the cross-sectional shape of the enlarged anchor hole be two arc surfaces, increasing the enlarged volume and improving the anchoring force and shear resistance.

[0060] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0061] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0062] In the present invention, unless otherwise clearly defined or limited, terms such as "installed", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or capable of communicating with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] In the present invention, unless otherwise clearly defined or limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0064] In the present invention, terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0065] Although the above embodiments have been shown and described, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions, and variations made by those of ordinary skill in the art to the above embodiments are within the protection scope of the present invention.

Claims

1. A bottle gourd-shaped hole expanding device based on non-Newtonian fluid, characterized in that, Comprising: A reaming rod, the reaming rod being a hollow cylinder, and a plurality of placement grooves being provided on the outer peripheral wall of the reaming rod, the plurality of placement grooves being circumferentially spaced along the reaming rod, and the length of the placement grooves extending along the axial direction of the reaming rod; A first pressing rod, the first pressing rod being connected to the first end of the reaming rod, and the first pressing rod being axially slidable along the reaming rod; A plurality of first elastic rods, the plurality of first elastic rods corresponding one-to-one to the plurality of placement grooves, the first elastic rods being located in the corresponding placement grooves, two ends of the first elastic rods being respectively connected to the first pressing rod and the reaming rod, the first elastic rods being hollow cylinders, and non-Newtonian fluid being filled in the first elastic rods; A second pressing rod, the second pressing rod being connected to the second end of the reaming rod, and the second pressing rod being axially slidable along the reaming rod; A plurality of second elastic rods, the plurality of second elastic rods corresponding one-to-one to the plurality of placement grooves, the second elastic rods being located in the corresponding placement grooves, two ends of the second elastic rods being respectively connected to the second pressing rod and the reaming rod, the second elastic rods being hollow cylinders, and non-Newtonian fluid being filled in the second elastic rods; A plurality of first rock-breaking members are provided on the first elastic rod, and the plurality of first rock-breaking members are axially spaced along the first elastic rod; A plurality of second rock-breaking members are provided on the second elastic rod, and the plurality of second rock-breaking members are axially spaced along the second elastic rod; A first guiding groove is provided on the first pressing rod, the length of the first guiding groove being arranged along the axial direction of the reaming rod, and a first guiding member is provided on the reaming rod, and the first guiding member is located in the first guiding groove; A second guiding groove is provided on the second pressing rod, the length of the second guiding groove being arranged along the axial direction of the reaming rod, and a second guiding member is provided on the reaming rod, and the second guiding member is located in the second guiding groove; The reaming rod includes a rod body and a connecting member, the connecting member being connected to the rod body, the first end of the first elastic rod being connected to the first pressing rod, the second end of the first elastic rod being connected to the connecting member, the first end of the second elastic rod being connected to the connecting member, and the second end of the second elastic rod being connected to the second pressing rod; It further includes a first elastic member and a second elastic member, both the first elastic member and the second elastic member being arranged in the reaming rod, two ends of the first elastic member being respectively connected to the first pressing rod and the connecting member, and two ends of the second elastic member being respectively connected to the second pressing rod and the connecting member.

2. The bottle gourd-shaped hole expanding device based on non-Newtonian fluid according to claim 1, characterized in that, Both the first rock-breaking member and the second rock-breaking member are diamond.

3. The bottle gourd-shaped hole expanding device based on non-Newtonian fluid according to claim 1, characterized in that, There are a plurality of the first guiding grooves and the first guiding members, the plurality of first guiding grooves being circumferentially spaced along the reaming rod, the plurality of first guiding members corresponding one-to-one to the plurality of first guiding grooves, and the first guiding members being located in the corresponding first guiding grooves; The second guiding grooves and the second guiding members are both multiple. The multiple second guiding grooves are circumferentially spaced along the circumference of the hole enlarging rod. The multiple second guiding members correspond to the multiple second guiding grooves one by one, and the second guiding members are located in the corresponding second guiding grooves.

4. The bottle gourd-shaped hole expanding device based on non-Newtonian fluid according to claim 1, characterized in that, The connecting member is located at one-third of the rod body close to the second pressing rod.

5. The bottle gourd-shaped hole expanding device based on non-Newtonian fluid according to claim 1, characterized in that, It further includes a backing iron, and the backing iron is connected to one end of the second pressing rod away from the hole enlarging rod.

6. A hole expanding method, characterized in that, Comprising: Provide a hole enlarging device, the hole enlarging device is the non-Newtonian fluid-based gourd-shaped hole enlarging device according to any one of claims 1-5. The hole enlarging device is sent to the bottom of the anchor hole by a drilling rig, and a thrust is continuously applied. The first elastic rod bends towards the hole wall of the anchor hole under the thrust of the first pressing rod and the hole enlarging rod, and the second elastic rod bends towards the hole wall of the anchor hole under the thrust of the second pressing rod and the hole enlarging rod; Start the drilling rig, and the high-speed rotation of the drilling rig drives the first elastic rod and the second elastic rod to rotate around the axis of the hole enlarging rod. The non-Newtonian fluid in the first elastic rod and the second elastic rod becomes solid under high-speed rotation to enhance the strength of the first elastic rod and the second elastic rod. The first elastic rod and the second elastic rod enlarge the anchor hole; Gradually increase the thrust of the drilling rig on the hole enlarging device, so that both the first elastic member and the second elastic member further bend towards the hole wall of the anchor hole until the anchor hole is completely enlarged; Turn off the drilling rig, gradually reduce the thrust on the hole enlarging device, and withdraw the hole enlarging device from the anchor hole.

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