Telescopic guide rods capable of being mutually fixed and construction method thereof

Abstract

The invention discloses a mutually fixable telescopic guide rod and a construction method thereof, the mutually fixable telescopic guide rod comprises: an inner rod, one end of which is provided with an outer clamping part; the outer rod is arranged on the periphery of the inner rod in a sleeving manner, and an inner clamping part clamped with the outer clamping part is arranged at the other end of the outer rod; two fixing parts which are distributed up and down are further arranged on the periphery of the inner rod, when the inner rod and the outer rod are in a complete stretching-out state, the inner clamping part and the outer clamping part are attached, the low-position fixing part is exposed, and the fixing device is detachably connected with the low-position fixing part; and when the inner rod and the outer rod are in a complete contraction state, only the high-position fixing part is exposed, and the fixing device is detachably connected with the high-position fixing part. By means of the telescopic guide rod capable of being mutually fixed, the locking and fixing effect of the telescopic guide rod can be effectively improved, and the drilling effect of the telescopic guide rod can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of telescopic drill rods, and more specifically, to a telescopic guide rod that can be fixed to each other. In addition, it also relates to a construction method applied to the telescopic guide rod that can be fixed to each other. Background Art

[0002] In the prior art, the structure of the friction telescopic drill rod is as follows: Figure 1-Figure 6 As shown, its characteristics are that the inner lower end of the outer rod 01 is the inner short key bar 03, the outer side of the inner rod 02 is the long key bar 04, and the upper end 05 of the inner rod 02 is a whole ring. The outer rod 01 and the inner rod 02 of the friction telescopic drill pipe are assembled together, the inner rod 02 is inserted into the inner part of the outer rod 01, and is hung on the short key bar 03 of the outer rod 01 through the upper end 05 of the inner rod 02. At the same time, the short key bar 03 of the outer rod 01 is fixedly connected with the long key bar 04 of the inner rod 02, so that the inner rod 02 can be driven to rotate when the outer rod 01 rotates. Specifically, the inner rod 02 of the friction telescopic drill rod is inserted into the outer rod 01 of the friction telescopic drill rod, and the upper end 05 of the inner rod 02 contacts the upper end surface of the short key bar 03 of the outer rod 01, applying an external force downward to the outer rod 01. The inner rod 02 is only subjected to a small part of the side friction of the key bar, resulting in a poor fixing effect between the inner rod 02 and the outer rod 01. In some underground situations where a certain pressure is required, the friction telescopic drill rod cannot be used.

[0003] In summary, how to improve the locking and fixing effect of the friction-resistance telescopic drill rod is a problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a telescopic guide rod that can be fixed to each other, which can effectively improve the locking and fixing effect of the telescopic guide rod and help improve the drilling effect of the telescopic guide rod.

[0005] Another object of the present invention is to provide a construction method applied to the above-mentioned telescopic guide rods that can be fixed to each other.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A telescopic guide rod that can be fixed to each other, comprising:

[0008] An inner rod, one end of which is provided with an outer clamping portion;

[0009] An outer rod is sleeved on the outer periphery of the inner rod, and the other end of the outer rod is provided with an inner clamping portion clamped with the outer clamping portion;

[0010] A fixing device, wherein the outer periphery of the inner rod is further provided with two fixing parts distributed up and down, when the inner rod and the outer rod are in a fully extended state, the inner clamping part fits with the outer clamping part and the lower fixing part is exposed, and the fixing device sleeve and the lower fixing part are detachably connected; when the inner rod and the outer rod are in a fully retracted state, only the higher fixing part is exposed, and the fixing device and the higher fixing part are detachably connected.

[0011] In one embodiment, the upper end of the outer rod is provided with the inner clamping portion, the lower end of the outer rod is used to connect the drilling tool, the lower end of the inner rod is provided with the outer clamping portion, and the upper and lower ends of the inner rod are respectively provided with the fixing portions.

[0012] In one embodiment, the lower end of the outer rod is provided with the inner clamping portion, the upper end of the inner rod is provided with the outer clamping portion, the upper end of the inner rod is provided with two fixing portions at intervals, and the lower end of the inner rod is used to connect a drilling tool.

[0013] In one embodiment, it also includes an intermediate rod, which is sleeved on the outer periphery of the inner rod and embedded in the inner periphery of the outer rod. The outer periphery of the intermediate rod is provided with two middle grooves distributed up and down. When the intermediate rod and the outer rod are relatively extended to the longest position, the lower middle groove is exposed, and the fixing device is sleeved in the lower middle groove; when the intermediate rod and the outer rod are relatively contracted to the shortest position, only the high middle groove is exposed, and the fixing device is sleeved in the high middle groove.

[0014] In one embodiment, the number of the intermediate rods is greater than or equal to one.

[0015] In one embodiment, the fixing portion includes a groove-like structure, and the fixing device includes a clamp or a clamping ring sleeved on the groove-like structure; or the fixing portion includes a pin hole, and the fixing device includes a fastener for inserting into the pin hole.

[0016] In one embodiment, a connecting portion for connecting a drilling tool is provided at the lower end of the inner rod or the outer rod.

[0017] A construction method, applied to any of the above-mentioned mutually fixable telescopic guide rods, comprising:

[0018] The telescopic guide rods that can be fixed to each other are in a fully retracted state and drilled to the limit position as a whole;

[0019] Removing the fixing device of the telescopic guide rods that can be fixed to each other, leaving the inner rod or the outer rod for connecting to the drilling tool underground, and lifting the outer rod or the inner rod that is not connected to the drilling tool upwards;

[0020] The fixing device fixes the outer rod and the inner rod, so that the telescopic guide rods that can be fixed to each other are in a fully extended state, and are drilled as a whole to the extreme position to form a pile.

[0021] In one embodiment, the method of removing the fixing device of the telescopic guide rods that can be fixed to each other, leaving the inner rod or the outer rod for connecting to the drilling tool underground, and lifting the outer rod or the inner rod that is not connected to the drilling tool upwards includes:

[0022] Removing a set of fixing devices of the telescopic guide rods that can be fixed to each other, leaving the inner rod or the outer rod for connecting with the drilling tool underground, and lifting the remaining rods upward;

[0023] The fixing device fixes the remaining rods and the rod connected to the drilling tool to form the elongated body, and the elongated body is drilled to the extreme position;

[0024] Removing a set of the fixing devices of the remaining rods, leaving the rods directly connected to the inner rods or the outer rods underground, and lifting the remaining rods upward;

[0025] Repeat the above operation until each rod is extended to the longest position.

[0026] In one embodiment, the fixing device fixes the outer rod and the inner rod so that the telescopic guide rods that can be fixed to each other are in a fully extended state and drilled as a whole to the extreme position to form a pile, including:

[0027] Each rod is extended to the longest position, and the fixing device fixes two adjacent rods that are relatively extended, so that the telescopic guide rods that can be fixed to each other are in a fully extended state, and are drilled as a whole to the extreme position to form piles.

[0028] When using the telescopic guide rod that can be fixed to each other provided by the present invention, first, when the inner rod and the outer rod are in a fully retracted state, only the high-position fixing part is exposed, and the fixing device is fixedly connected to the high-position fixing part to lock the inner rod and the outer rod, so that the telescopic guide rod that can be fixed to each other is in a fully retracted state. Then, the telescopic guide rod that can be fixed to each other in the retracted state is drilled downward as a whole by using other equipment to drill to the limit position. Subsequently, the fixing device in the high-position fixing part is removed, leaving the inner rod or the outer rod used to be connected to the drilling tool underground, and the outer rod or the inner rod that is not connected to the drilling tool is lifted upward (that is, when the inner rod is connected to the drilling tool, the outer rod is lifted upward, and when the outer rod is connected to the drilling tool, the inner rod is lifted upward), until the inner clamping part of the outer rod fits with the outer clamping part of the inner rod and the low-position fixing part is exposed, at this time, the low-position fixing part is fixedly connected to the fixing device, so that the outer rod and the inner rod are relatively extended, and the telescopic guide rod that can be fixed to each other is in a fully extended state. Finally, the fixedly connected inner rod and outer rod are drilled downward as a whole and drilled to the extreme position.

[0029] In summary, the telescopic guide rods that can be fixed to each other provided by the present invention can effectively improve the locking and fixing effect of the telescopic guide rods, and help to improve the drilling effect of the telescopic guide rods.

[0030] In addition, the present invention also provides a construction method applied to the above-mentioned telescopic guide rods that can be fixed to each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0032] Figure 1 It is a schematic diagram of the structure of the outer rod of the friction telescopic drill rod in the prior art;

[0033] Figure 2 for Figure 1 A top view of

[0034] Figure 3 It is a schematic diagram of the structure of the inner rod of the friction telescopic drill rod;

[0035] Figure 4 for Figure 3 A top view of

[0036] Figure 5 It is a schematic diagram of the assembly of the inner rod and the outer rod of the friction telescopic drill rod;

[0037] Figure 6for Figure 5 A top view of

[0038] Figure 7 A schematic structural diagram of an outer rod of a first embodiment of a telescopic guide rod that can be fixed to each other provided by the present invention;

[0039] Figure 8 A schematic structural diagram of the inner rod of a first embodiment of telescopic guide rods that can be fixed to each other;

[0040] Fig. 9 It is a schematic diagram of the assembly of the inner rod and the outer rod of the first embodiment of the telescopic guide rod that can be fixed to each other when the inner rod and the outer rod are retracted;

[0041] Fig.10 It is a schematic diagram of the assembly of the inner rod and the outer rod of the first embodiment of the telescopic guide rod that can be fixed to each other when the inner rod and the outer rod are extended;

[0042] Fig.11 A schematic diagram of the use of a first embodiment of telescopic guide rods that can be fixed to each other;

[0043] Fig.12 A schematic structural diagram of an outer rod of a second embodiment of the telescopic guide rods that can be fixed to each other provided by the present invention;

[0044] Fig.13 A schematic structural diagram of the inner rod of the second embodiment of the telescopic guide rods that can be fixed to each other;

[0045] Fig.14 It is a schematic diagram of the assembly of the inner rod and the outer rod of the second embodiment of the telescopic guide rod that can be fixed to each other when the inner rod and the outer rod are retracted;

[0046] Fig.15 It is a schematic diagram of the assembly of the inner rod and the outer rod of the second embodiment of the telescopic guide rod that can be fixed to each other when they are extended;

[0047] Fig.16 A schematic structural diagram of an outer rod of a third embodiment of the telescopic guide rods that can be fixed to each other provided by the present invention;

[0048] Fig.17 A schematic structural diagram of the inner rod of the third embodiment of the telescopic guide rods that can be fixed to each other;

[0049] Fig.18 It is a schematic assembly diagram of the inner rod and the outer rod of the third embodiment of the telescopic guide rod that can be fixed to each other when they are retracted;

[0050] Fig.19 It is a schematic assembly diagram of the inner rod and the outer rod of the third embodiment of the telescopic guide rod that can be fixed to each other when they are extended;

[0051] Fig. 20A schematic diagram of the use of a second embodiment of telescopic guide rods that can be fixed to each other;

[0052] Fig.21 A schematic structural diagram of a fourth embodiment of the mutually fixable telescopic guide rods provided by the present invention;

[0053] Fig. 22 A schematic diagram of the use of a fourth embodiment of telescopic guide rods that can be fixed to each other;

[0054] Fig.23 A schematic structural diagram of a fifth embodiment of the telescopic guide rods that can be fixed to each other provided by the present invention;

[0055] Fig.24 A schematic diagram of the use of a fifth embodiment of telescopic guide rods that can be fixed to each other;

[0056] Fig.25 The present invention is a schematic diagram of the construction method provided by the present invention.

[0057] Figure 1-Figure 6 middle:

[0058] 01 is the outer rod, 02 is the inner rod, 03 is the short key bar, 04 is the long key bar, and 05 is the upper end.

[0059] Figure 7-Figure 25 middle:

[0060] 1 is an outer rod, 11 is an inner clamping portion, 2 is an inner rod, 21 is an outer clamping portion, 3 is a drilling tool, 4 is a fixing portion, 5 is an intermediate rod, and 51 is a middle groove. DETAILED DESCRIPTION

[0061] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0062] The core of the present invention is to provide a telescopic guide rod that can be fixed to each other, which can effectively improve the locking and fixing effect of the telescopic guide rod and help improve the drilling effect of the telescopic guide rod. Another core of the present invention is to provide a construction method applied to the above-mentioned telescopic guide rod that can be fixed to each other.

[0063] Please refer to Figures 7 to 25 .

[0064] This specific embodiment provides a telescopic guide rod that can be fixed to each other, including:

[0065] The inner rod 2 has an outer clamping portion 21 at one end thereof;

[0066] The outer rod 1 is sleeved on the outer periphery of the inner rod 2, and the other end of the outer rod 1 is provided with an inner clamping portion 11 clamped with the outer clamping portion 21;

[0067] The fixing device is further provided with two fixing parts 4 distributed up and down on the outer periphery of the inner rod 2. When the inner rod 2 and the outer rod 1 are in a fully extended state, the inner clamping part 11 fits with the outer clamping part 21 and exposes the lower fixing part 4, and the fixing device and the lower fixing part 4 are detachably connected; when the inner rod 2 and the outer rod 1 are in a fully retracted state, only the high fixing part 4 is exposed, and the fixing device and the high fixing part 4 are detachably connected.

[0068] It should be noted that the mutually fixable telescopic guide rod can be set as a two-section rod (including an inner rod 2 and an outer rod 1), and can also be set as a multi-section rod (inner rod 2+outer rod 1+at least one intermediate rod 5). By setting a fixing portion 4 at a specific position of each rod, when the two adjacent rods are in a fully retracted state, the lower fixing portion 4 is exposed, and then the fixing device and the lower fixing portion 4 are detachably connected to lock and fix the two rods in the extended state (at this time, the fixing device can be connected to the adjacent rod in addition to the lower fixing portion 4, for example, the fixing device and the end of the adjacent rod are clamped or bolted, or the adjacent rod is provided with a clamping groove corresponding to the fixing portion 4, so that the fixing device clamps the lower fixing portion 4 and the clamping groove of the adjacent rod), and when the two adjacent rods are in a fully retracted state, the higher fixing portion 4 is exposed, and then the fixing device and the higher fixing portion 4 are detachably connected to lock and fix the two rods in the retracted state (at this time, the fixing device can be connected to the upper fixing portion 4 in addition to the fixing device). Furthermore, the outer clamping portion 21 can be configured as an annular protrusion or an arc-shaped protrusion, and the inner clamping portion 11 can be configured as an annular groove or an arc-shaped groove to be clamped and matched with the outer clamping portion 21 .

[0069] In actual use, the shape, structure, size, material, position, etc. of the inner rod 2, the outer rod 1 and the fixing device can be determined according to actual conditions and actual needs.

[0070] When using the telescopic guide rod that can be fixed to each other provided by the present invention, first, when the inner rod 2 and the outer rod 1 are in a fully retracted state, only the high-position fixing portion 4 is exposed, and the fixing device is fixedly connected to the high-position fixing portion 4 to lock the inner rod 2 and the outer rod 1, so that the telescopic guide rod that can be fixed to each other is in a fully retracted state. Then, other equipment is used to drill downward as a whole the retracted telescopic guide rod that can be fixed to each other to the limit position. Subsequently, the fixing device in the high-position fixing part 4 is removed, leaving the inner rod 2 or outer rod 1 for connecting with the drilling tool 3 underground, and the outer rod 1 or inner rod 2 not connected with the drilling tool 3 is lifted upward (that is, when the inner rod 2 is connected with the drilling tool 3, the outer rod 1 is lifted upward, and when the outer rod 1 is connected with the drilling tool 3, the inner rod 2 is lifted upward), until the inner clamping part 11 of the outer rod 1 fits with the outer clamping part 21 of the inner rod 2 and the low-position fixing part 4 is exposed. At this time, the low-position fixing part 4 and the fixing device are fixedly connected, so that the outer rod 1 and the inner rod 2 are relatively extended, and the telescopic guide rod that can be fixed to each other is in a fully extended state. Finally, the fixedly connected inner rod 2 and outer rod 1 are drilled downward as a whole and drilled to the limit position.

[0071] In summary, the telescopic guide rods that can be fixed to each other provided by the present invention can effectively improve the locking and fixing effect of the telescopic guide rods, and help to improve the drilling effect of the telescopic guide rods.

[0072] In one embodiment, if Figures 7 to 10 As shown, the upper end of the outer rod 1 is provided with an inner clamping portion 11, the lower end of the outer rod 1 is used to connect the drilling tool 3, the lower end of the inner rod 2 is provided with an outer clamping portion 21, and the upper and lower ends of the inner rod 2 are respectively provided with fixing portions 4.

[0073] It should be noted that when using the telescopic guide rods that can be fixed to each other in this embodiment, Fig.11 As shown, first, the telescopic guide rods that can be fixed to each other are lowered by drilling equipment, and at this time, the telescopic guide rods that can be fixed to each other are in a fully retracted state (that is, the outer rod 1 and the inner rod 2 are assembled and retracted with each other, and a fixing device is installed on the fixing portion 4 at the upper end of the inner rod 2); then, the fixing device between the outer rod 1 and the inner rod 2 is removed; then, the inner rod 2 is lifted by a lifting device, the lower end of the outer rod 1 is connected to the drilling tool 3, and the outer rod 1 is kept stationary underground until the inner rod 2 is lifted to the point where the outer clamping portion 21 is in contact with the inner clamping portion 11 and the fixing portion 4 at the lower end of the inner rod 2 is exposed, and the fixing device is connected and fixed to the fixing portion 4 at the lower end of the inner rod 2, so that the telescopic guide rods that can be fixed to each other are in a fully extended state; finally, the inner rod 2 and the outer rod 1 in the fully extended state are drilled to the bottom together.

[0074] In one embodiment, the lower end of the outer rod 1 is provided with an inner clamping portion 11, the upper end of the inner rod 2 is provided with an outer clamping portion 21, the upper end of the inner rod 2 is provided with two fixing portions 4 at intervals, and the lower end of the inner rod 2 is used to connect the drilling tool 3.

[0075] It should be noted that if Figures 12 to 15 As shown, two fixing parts 4 can be arranged at intervals on the upper end of the inner rod 2, and the outer clamping part 21 can be arranged above the high fixing part 4, or as shown in FIG. Figures 16 to 19 As shown, two fixing parts 4 can be arranged at intervals on the upper end of the inner rod 2, and the outer clamping part 21 can be arranged between the two fixing parts 4. Moreover, in this embodiment, one fixing part 4 can be removed, and a tray for fixing the outer rod 1 can be arranged at the lower end of the inner rod 2. When the mutually fixable telescopic guide rods are in a fully extended state, the inner rod 2 is lifted until the outer clamping part 21 fits with the inner clamping part 11, and the tray at the lower end of the inner rod 2 is clamped and fixed with the lower end of the outer rod 1, so that the inner rod 2 and the outer rod 1 are fixedly connected. In actual use, the structures of the inner rod 2 and the outer rod 1 can be arranged according to actual conditions and actual needs.

[0076] In addition, it should be noted that Fig. 20 As shown, when using the telescopic guide rods that can be fixed to each other in this embodiment, first, the telescopic guide rods that can be fixed to each other are lowered by the drilling equipment, and the telescopic guide rods that can be fixed to each other are in a fully retracted state (that is, the outer rod 1 and the inner rod 2 are assembled and retracted to each other, and a fixing device is installed on the fixing portion 4 at the upper end of the inner rod 2); then, the fixing device between the outer rod 1 and the inner rod 2 is removed; then, the outer rod 1 is lifted by the lifting equipment, the lower end of the inner rod 2 is connected to the drilling tool 3, and the inner rod 2 remains stationary underground until the outer rod 1 is lifted to the point where the inner clamping portion 11 is in contact with the outer clamping portion 21 of the inner rod 2, and the fixing portion 4 at the upper end of the inner rod 2 is exposed, and the fixing device is connected and fixed to the fixing portion 4 at the upper end of the inner rod 2, so that the telescopic guide rods that can be fixed to each other are in a fully extended state; finally, the inner rod 2 and the outer rod 1 in the fully extended state are drilled to the bottom together.

[0077] In one embodiment, if Fig.21 and Fig.23As shown, the intermediate rod 5 is also included. The intermediate rod 5 is sleeved on the outer periphery of the inner rod 2 and embedded in the inner periphery of the outer rod 1. The outer periphery of the intermediate rod 5 is provided with two middle grooves 51 distributed up and down. When the intermediate rod 5 and the outer rod 1 are relatively extended to the longest position, the lower middle groove 51 is exposed, and the fixing device is sleeved in the lower middle groove 51; when the intermediate rod 5 and the outer rod 1 are relatively contracted to the shortest position, only the high middle groove 51 is exposed, and the fixing device is sleeved in the high middle groove 51. That is, the device can include two sections of rods or multiple sections of rods. The middle groove 51 for placing the fixing device is set at a specific position of the intermediate rod 5. The middle groove 51 can be set as an annular groove or a local groove, so that the adjacent two intermediate rods 5, the intermediate rod 5 and the inner rod 2, or the intermediate rod 5 and the outer rod 1 are fixedly connected, so that each section of the rod is connected and fixed into one, so that the deadweight of the telescopic guide rod can be better increased, and the downward pressure given to the telescopic guide rod by the transmission device can be transmitted.

[0078] In one embodiment, the number of the intermediate rods 5 is greater than or equal to 1, that is, the present application can be a two-section rod, a three-section rod, a four-section rod or a multi-section rod. When the mutually fixable telescopic guide rods are in a fully retracted state, the whole is drilled to the limit position, and then one set of fixing devices is removed, leaving the section of rod used to connect with the drilling tool 3 underground, and the remaining rods are lifted up, and the fixing devices are continued to fix the remaining rods to form a new whole and continue to drill to the limit position, and so on, and finally each rod is extended to the maximum position and fixedly connected to form a pile.

[0079] In one embodiment, the fixing portion 4 includes a groove-shaped structure, and the fixing device includes a hoop or a clamp sleeved on the groove-shaped structure; or the fixing portion 4 includes a pin hole, and the fixing device includes a fastener for inserting into the pin hole. That is, the fixing portion 4 and the fixing device are arranged in cooperation to achieve a detachable connection between two adjacent rods, and the specific structures of the fixing portion 4 and the fixing device can be selected according to actual needs.

[0080] In one embodiment, a connection portion for connecting the drilling tool 3 is provided at the lower end of the inner rod 2 or the outer rod 1. The shape, position, etc. of the connection portion can be determined according to actual conditions and actual needs during use.

[0081] In addition to the above-mentioned telescopic guide rods that can be fixed to each other, the present invention also provides a construction method for the telescopic guide rods that can be fixed to each other disclosed in the above-mentioned embodiment, and the construction method includes:

[0082] S1. The telescopic guide rods that can be fixed to each other are in a fully retracted state and drilled to the limit position as a whole;

[0083] S2, removing the fixing device of the telescopic guide rods that can be fixed to each other, leaving the inner rod 2 or the outer rod 1 for connecting with the drilling tool 3 underground, and lifting the outer rod 1 or the inner rod 2 that is not connected with the drilling tool 3 upward;

[0084] S3, the fixing device fixes the outer rod 1 and the inner rod 2, so that the telescopic guide rods that can be fixed to each other are in a fully extended state, and are drilled as a whole to the extreme position to form a pile.

[0085] In one embodiment, the fixing device of the telescopic guide rods that can be fixed to each other is removed, leaving the inner rod 2 or the outer rod 1 for connecting to the drilling tool 3 underground, and lifting the outer rod 1 or the inner rod 2 that is not connected to the drilling tool 3 upward, including:

[0086] A set of fixing devices of the telescopic guide rods that can be fixed to each other are removed, leaving the inner rod 2 or the outer rod 1 for connecting to the drilling tool 3 underground, and the remaining rods (that is, if the inner rod 2 is left underground, the remaining rods here are the rods other than the inner rod 2; if the outer rod 1 is left underground, the remaining rods here are the rods other than the outer rod 1) are lifted upward (that is, the construction method is also applicable to multi-section rod structures); the fixing devices fix the remaining rods and the rods connected to the drilling tool 3 to form an elongated body, and the elongated body is drilled to the limit position; a set of fixing devices of the remaining rods are removed, leaving the rods of the inner rod 2 or the outer rod 1 directly connected to the underground, and the remaining remaining rods (that is, if the rod connected to the inner rod 2 is left underground, the remaining rods here are the rods other than the inner rod 2 and the rods directly connected to the inner rod 2; if the rod connected to the outer rod 1 is left underground, the remaining rods here are the rods other than the outer rod 1 and the rods directly connected to the outer rod 1) are lifted upward; the above operations are repeated until each rod is extended to the longest position.

[0087] In order to further illustrate the construction method, the following takes as an example that the telescopic guide rod that can be fixed to each other is a three-section rod (which includes an inner rod 2, a middle rod 5 and an outer rod 1), the outer rod 1 is used to connect the drilling tool 3, the upper and lower ends of the inner rod 2 are respectively provided with fixing parts 4, and the upper and lower ends of the middle rod 5 are respectively provided with middle grooves 51.

[0088] like Fig. 22As shown, first, the lower end of the outer rod 1 is connected to the drilling tool 3, and the telescopic guide rods that can be fixed to each other are in a fully retracted state (that is, the outer rod 1, the middle rod 5 and the inner rod 2 are assembled and retracted with each other, and the middle groove 51 at the upper end of the middle rod 5 and the fixing part 4 at the upper end of the inner rod 2 are both installed with fixing devices), and then the telescopic guide rods that can be fixed to each other are lowered and drilled to the limit position by the drilling equipment; then, the fixing device between the outer rod 1 and the middle rod 5 is removed on the ground (that is, the fixing device is located on the ground for easy operation); then, the lifting equipment is used to lift the middle rod 5 and the inner rod 2, and the outer rod 1 is kept stationary underground until the middle rod 5 is exposed. The middle groove 51 at the lower end of the intermediate rod 5 is used to fix the fixing device and the middle groove 51 at the lower end of the intermediate rod 5, so that the intermediate rod 5 is in an extended state relative to the outer rod 1; then, the intermediate rod 5 is lowered and drilled by means of drilling equipment, and drilled to the extreme position, and then the fixing device between the intermediate rod 5 and the inner rod 2 is removed on the ground; thereafter, the inner rod 2 is lifted by means of a lifting device, and the intermediate rod 5 remains stationary underground until the low-position fixing portion 4 of the inner rod 2 is exposed, and the fixing device and the low-position fixing portion 4 of the inner rod 2 are fixedly connected; finally, the inner rod 2, the intermediate rod 5 and the outer rod 1 in a fully extended state form a whole, and the whole is drilled to the extreme position to form a pile.

[0089] Next, an example is given in which the telescopic guide rod that can be fixed to each other is a three-section rod (including an inner rod 2, an intermediate rod 5 and an outer rod 1), the inner rod 2 is used to connect the drilling tool 3, the upper end of the inner rod 2 is provided with two fixing parts 4, and the upper end of the intermediate rod 5 is provided with two middle grooves 51.

[0090] like Fig.24 As shown, first, the lower end of the inner rod 2 is connected to the drilling tool 3, and the telescopic guide rods that can be fixed to each other are in a fully retracted state (that is, the outer rod 1, the middle rod 5 and the inner rod 2 are assembled and retracted, and the middle groove 51 at the upper end of the middle rod 5 and the fixing part 4 at the upper end of the inner rod 2 are both installed with fixing devices), and then the telescopic guide rods that can be fixed to each other are lowered and drilled to the limit position by the drilling equipment; then, the fixing device between the inner rod 2 and the middle rod 5 is removed on the ground (that is, the fixing device is located on the ground for easy operation); then, the middle rod 5 and the outer rod 1 are lifted by the lifting equipment, and the inner rod 2 remains stationary underground until the middle rod 5 is exposed. The middle groove 51 at the low position of the rod 5 fixes and connects the fixing device and the middle groove 51 at the low position of the middle rod 5, so that the middle rod 5 is in an extended state relative to the inner rod 2; then, the middle rod 5 is lowered and drilled by the drilling equipment, and drilled to the extreme position, and then the fixing device between the middle rod 5 and the outer rod 1 is removed on the ground; thereafter, the outer rod 1 is lifted by the lifting equipment, and the middle rod 5 is kept stationary underground until the low-position fixing part 4 of the outer rod 1 is exposed, and the fixing device and the low-position fixing part 4 of the outer rod 1 are fixed and connected; finally, the inner rod 2, the middle rod 5 and the outer rod 1 in the fully extended state form a whole, and the whole is drilled to the extreme position to form a pile.

[0091] In addition, it should be noted that the present application drills downward as a whole the retracted telescopic guide rods that can be fixed to each other, and then controls the rods of the telescopic guide rods that can be fixed to each other that are not connected to the hoisting and not installed with the drilling device to be lifted, and then uses the fixing device to connect the rods that are not installed with the drilling device and the rods that are installed with the drilling device to form a whole, and drills downward as a whole to the limit position, and then sequentially lifts the rod structure connected to the previous rod left underground, and repeats the above operation until all rods are extended to the maximum position. If the order of lifting the rods is changed, the problem of resetting the sealing structure between adjacent rods may arise, and it may be necessary to contact the fixing devices on the adjacent rods underground, resulting in cumbersome and inconvenient operation of the device.

[0092] In one embodiment, the fixing device fixes the outer rod 1 and the inner rod 2 so that the telescopic guide rods that can be fixed to each other are in a fully extended state, and are drilled as a whole to the extreme position to form a pile, including:

[0093] Each rod is extended to the longest position, and the fixing device fixes two adjacent rods that are relatively extended, so that the telescopic guide rods that can be fixed to each other are in a fully extended state, and are drilled as a whole to the extreme position to form a pile.

[0094] In addition, it should be noted that the orientations or positional relationships indicated by "inside and outside", "up and down", etc. in this application are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of simplifying the description and facilitating understanding, and do not indicate or imply 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 on the present invention.

[0095] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. Any combination of all embodiments provided by the present invention is within the protection scope of this invention and will not be described in detail here.

[0096] The above is a detailed introduction to the mutually fixable telescopic guide rod and its construction method provided by the present invention. Specific examples are used in this article to illustrate the principle and implementation method of the present invention. The description of the above embodiment is only used to help understand the method and core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A telescopic guide rod that can be fixed to each other, characterized in that: include: An inner rod (2), one end of which is provided with an outer clamping portion (21); An outer rod (1) sleeved on the outer periphery of the inner rod (2), the other end of the outer rod (1) being provided with an inner clamping portion (11) clamped with the outer clamping portion (21); The fixing device further comprises two fixing portions (4) distributed up and down on the outer periphery of the inner rod (2); when the inner rod (2) and the outer rod (1) are in a fully extended state, the inner clamping portion (11) fits with the outer clamping portion (21) and only the fixing portion (4) at a lower position is exposed, and the fixing device and the fixing portion (4) at the lower position are detachably connected; when the inner rod (2) and the outer rod (1) are in a fully retracted state, only the fixing portion (4) at a higher position is exposed, and the fixing device and the fixing portion (4) at the higher position are detachably connected.

2. The mutually fixable telescopic guide rod according to claim 1, characterized in that: The upper end of the outer rod (1) is provided with the inner clamping portion (11), the lower end of the outer rod (1) is used to connect with a drilling tool (3), the lower end of the inner rod (2) is provided with the outer clamping portion (21), and the upper and lower ends of the inner rod (2) are respectively provided with the fixing portion (4).

3. The mutually fixable telescopic guide rod according to claim 1, characterized in that: The lower end of the outer rod (1) is provided with the inner clamping portion (11), the upper end of the inner rod (2) is provided with the outer clamping portion (21), the upper end of the inner rod (2) is provided with two fixing portions (4) at intervals, and the lower end of the inner rod (2) is used to connect a drilling tool (3).

4. The mutually fixable telescopic guide rod according to any one of claims 1 to 3, characterized in that: The invention also comprises an intermediate rod (5), wherein the intermediate rod (5) is sleeved on the outer circumference of the inner rod (2) and embedded in the inner circumference of the outer rod (1); the outer circumference of the intermediate rod (5) is provided with two middle grooves (51) distributed up and down; when the intermediate rod (5) and the outer rod (1) are relatively extended to the longest position, only the middle groove (51) at the lower position is exposed, and the fixing device is sleeved in the middle groove (51) at the lower position; when the intermediate rod (5) and the outer rod (1) are relatively retracted to the shortest position, only the middle groove (51) at the upper position is exposed, and the fixing device is sleeved in the middle groove (51) at the upper position.

5. The mutually fixable telescopic guide rod according to claim 4, characterized in that: The number of the intermediate rods (5) is greater than or equal to 1.

6. The mutually fixable telescopic guide rod according to any one of claims 1 to 3, characterized in that: The fixing portion (4) comprises a groove-shaped structure, and the fixing device comprises a hoop or a clamping ring sleeved on the groove-shaped structure; or the fixing portion (4) comprises a pin hole, and the fixing device comprises a fastener for inserting into the pin hole.

7. The mutually fixable telescopic guide rod according to any one of claims 1 to 3, characterized in that: The lower end of the inner rod (2) or the outer rod (1) is provided with a connection portion for connecting a drilling tool (3).

8. A construction method, applied to the mutually fixable telescopic guide rods as claimed in any one of claims 1 to 7, characterized in that: include: The telescopic guide rods that can be fixed to each other are in a fully retracted state and drilled to the limit position as a whole; Removing the fixing device of the telescopic guide rods that can be fixed to each other, leaving the inner rod (2) or the outer rod (1) for connecting to the drilling tool (3) underground, and lifting the outer rod (1) or the inner rod (2) that is not connected to the drilling tool (3) upwards; The fixing device fixes the outer rod (1) and the inner rod (2), so that the telescopic guide rods that can be fixed to each other are in a fully extended state, and are drilled as a whole to an extreme position to form a pile.

9. The construction method according to claim 8, characterized in that: The method of removing the fixing device of the telescopic guide rods that can be fixed to each other, leaving the inner rod (2) or the outer rod (1) for connecting to the drilling tool (3) underground, and lifting the outer rod (1) or the inner rod (2) that is not connected to the drilling tool (3) upwards, comprises: A set of fixing devices of the mutually fixable telescopic guide rods are removed, leaving the inner rod (2) or the outer rod (1) for connecting with the drilling tool (3) underground, and the remaining rods are lifted upwards; The fixing device fixes the remaining rods and the rod connected to the drilling tool (3) to form an elongated body, and the elongated body is drilled to an extreme position; Removing a set of the fixing devices of the remaining rods, leaving the rods directly connected to the inner rod (2) or the outer rod (1) underground, and lifting the remaining rods upward; Repeat the above operation until each rod is extended to the longest position.

10. The construction method according to claim 9, characterized in that: The fixing device fixes the outer rod (1) and the inner rod (2) so that the telescopic guide rods that can be fixed to each other are in a fully extended state and drilled as a whole to an extreme position to form a pile, comprising: Each rod is extended to the longest position, and the fixing device fixes two adjacent rods that are relatively extended, so that the telescopic guide rods that can be fixed to each other are in a fully extended state, and are drilled as a whole to the extreme position to form piles.

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