A depth-keeping collapsible loess sample collecting device and a method of using the same

Abstract

The application relates to a collapsible loess sample collection technology field, in particular to a depth-setting collapsible loess sample collection device and a use method thereof. The device comprises a front drill rod, a limiting rod is fixedly connected to the upper outer side of the front drill rod, one end of a telescopic rod is slidably connected to the inner side of the limiting rod, an alarm device is arranged between the limiting rod and the telescopic rod, one end of an adjusting device is rotatably connected to the other end of the telescopic rod through a rotating shaft, the other end of the adjusting device is rotatably connected to a sliding block through a rotating shaft, a supporting plate is fixedly connected to the outer side of the sliding block, a guide mud plate is rotatably connected to the lower part of the front drill rod through a rotating shaft, one end of a pull rope is fixedly connected to the upper outer side of the guide mud plate, and the other end of the pull rope is fixedly connected to the lower end face of the supporting plate through a fixed pulley. Thus, the sliding of the sliding block can drive the telescopic rod to move, the frictional stress area of the whole device is gradually increased, the light touch switch can be effectively triggered, and the depth-setting drill hole sampling of the loess layer can be effectively realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of collapsible loess sample collection, in particular to a depth setting collapsible loess sample collection device and a use method thereof. BACKGROUND

[0002] The collapsible loess geology is mainly due to the soil saturated with a large amount of water, so that the soil is relatively high in complexity during actual construction, and due to factors such as excessive soil moisture, the loess void is relatively large, lacks strong bearing capacity, and collapse occurs from time to time, and the long-term penetration of water molecules will increase the swelling property of the loess, which will seriously affect the overall construction quality of the project, so in the early stage of construction, the deep loess at the construction site needs to be sampled and detected.

[0003] The traditional detection method generally uses a drill to drill a drill bit to a certain depth, and then detects the loess sampled up, but since the switching between the drilling and sampling steps generally needs to replace the front end of the drill bit to be implemented, this will result in that during the sampling process, multiple sampling and drill bit replacement are often required to achieve the desired effect, therefore, the depth setting collapsible loess sample collection device and the use method thereof are proposed to solve the above problems. SUMMARY

[0004] The purpose of the present application is to provide a depth setting collapsible loess sample collection device and a use method thereof to solve the problem that the traditional sampling method often needs multiple sampling and drill bit replacement to achieve the desired effect.

[0005] To achieve the above purpose, the present application provides the following technical scheme:

[0006] A depth setting collapsible loess sample collection device and a use method thereof, comprising a front drill rod and a flushing return pipe, the front drill rod is hollow, a guide sliding groove is formed on the front drill rod, a limiting rod is fixedly connected to the outer side of the upper part of the front drill rod, one end of an extension rod is slidably connected to the inner side of the limiting rod, an alarm device is arranged between the limiting rod and the extension rod, the other end of the extension rod is rotatably connected to one end of an adjusting device through a rotating shaft, the other end of the adjusting device is rotatably connected to a sliding block through a rotating shaft, the outer side of the sliding block is slidably connected with the guide sliding groove, a support plate is fixedly connected to the outer side of the sliding block, a fixed pulley is fixedly connected to the inner side of the lower part of the front drill rod, a mud guide plate is rotatably connected to the lower part of the front drill rod through a rotating shaft, one end of a pull rope is fixedly connected to the outer side of the upper part of the mud guide plate, and the other end of the pull rope is fixedly connected to the lower end surface of the support plate through the fixed pulley.

[0007] Preferably, the lower part of the front drill rod is fixedly connected with a sealing plate, the inner side of the sealing plate is provided with a first sliding groove, one end of a compression spring is fixedly connected with the inner side of the first sliding groove, the other end of the compression spring is fixedly connected with one end of an expansion block, the outer side of the expansion block is slidably connected with the first sliding groove, and the other end of the expansion block is fixedly connected with a mud scraping plate.

[0008] Preferably, the alarm device comprises a first guide block fixedly connected to the outer end surface of the expansion rod, a second sliding groove is formed in the inner side of the limiting rod, a micro switch is fixedly connected to the inner side of the second sliding groove, and the inner side of the first guide block is inlaid with a ball, the outer side of the ball is slidably connected with the second sliding groove.

[0009] Preferably, the adjusting device comprises a friction device and a clamping device, the friction device comprises a cylinder, the inner side of the cylinder is fixedly connected with a rotating rod, a plurality of friction plates with different friction coefficients are installed on the outer end curved surface of the cylinder, and a friction protrusion is fixedly connected to the outer end surface of the friction plate.

[0010] Preferably, the clamping device comprises a rotating handle, the lower end surface of the rotating handle is fixedly connected with a clamping rod and a limiting sleeve, the outer side of the limiting sleeve is fixedly connected with the cylinder, the inner side of the limiting sleeve is provided with a third sliding groove, the outer side of the rotating rod is fixedly connected with a second guide block, and the outer side of the second guide block is slidably connected with the third sliding groove.

[0011] Preferably, a clamping groove is formed in the cylinder, the lower end surface of the clamping rod is fixedly connected with a connecting block, the outer side of the connecting block is fixedly connected with an elastic clamping piece, the elastic clamping piece is arranged in an arc shape, and the outer side of the elastic clamping piece is clamped with the clamping groove.

[0012] Preferably, the limiting rod, the expansion rod, the adjusting device, the sliding block, the fixed pulley, the pull rope and the mud guide plate are all provided with six, and the six limiting rods, expansion rods, adjusting devices, sliding blocks, fixed pulleys, pull ropes and mud guide plates are symmetrically distributed around the central axis of the front drill rod.

[0013] Preferably, the method comprises the following steps:

[0014] Step one: first, install the front drill rod on the pre-installed main drive drilling device, then connect the flushing return pipe, then continuously lengthen the drill rod to deepen the drilling of the overall device, in the initial stage, the friction device receives a smaller friction force due to the shallow loess collapse, and the expansion rod, the rotating rod and the sliding block do not move relatively.

[0015] Step two: with the continuous increase of the depth of the drill hole, the collapsibility of the loess is gradually improved, and then with the decrease of the moisture content of the loess and the increase of the tightness, the friction force received by the friction device during rotation will become larger, at this time, under the action of the friction force, the friction device will drive the sliding block to move upward, and at the same time, due to the movement of the sliding block, the telescopic rod will also be forced to move outward.

[0016] Step three: when the moisture content of the loess further decreases and the tightness further increases, the friction force received by the friction device further increases, at this time, the sliding block continues to move upward, thereby driving the telescopic rod to further expand and contract through the adjusting device, and at the same time, due to the upward movement of the sliding block, the supporting plate is driven to move upward, thereby driving the guide plate to rotate outward with the aid of the fixed pulley 12, so that the loess sample is sampled in the inside of the front drill rod, and in this process, the first guide block gradually approaches the light touch switch with the aid of the ball, and when the external controller detects that all the light touch switches are triggered, it can be known that the moisture content and tightness of the loess reach a certain standard, and then the front drill rod is taken out, and the loess sample inside the front drill rod is taken out for detection.

[0017] Step four: after detection, if it is found that the depth of the drill hole needs to be adjusted, the rotating handle is pulled to make the elastic card separate from the clamping groove, at this time, the rotating handle is rotated, the friction device is driven to rotate through the limiting of the second guide block, and when the friction device is rotated to the appropriate position, the rotating handle is pushed downward to make the elastic card on the clamping rod and the clamping groove re-clamp.

[0018] Step five: at this time, due to the change of the position of the friction plate and the friction block on the friction device, the friction coefficient between the overall device and the loess also changes accordingly, and then the loess sampling depth of the overall device can be effectively adjusted.

[0019] Compared with the prior art, the beneficial effects of the present application are:

[0020] 1、In the present application, by setting the limiting rod, telescopic rod, alarm device, first guide block, second sliding groove, light touch switch, ball, adjusting device and friction device, the sliding of the sliding block can drive the telescopic rod to move, so that the friction force area of the overall device gradually increases, thereby the light touch switch can be effectively triggered, and the fixed depth drilling sampling of the loess layer can be effectively realized.

[0021] 2、In the present application, by setting the supporting plate, fixed pulley, guide plate and pull rope, the guide of the fixed pulley and the traction of the pull rope can make the guide plate effectively expand at the appropriate time, so that the sampling of the loess layer can be realized at the same time of drilling, and the sampling efficiency of the loess layer drilling sampling is improved.

[0022] 3、The whole device can effectively avoid the mixing of upper layer non-required soil in the sampling process, and improve the loess layer sampling precision of the whole device by setting the sealing plate, the first sliding groove, the compression spring, the telescopic block and the mud scraping plate. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the whole structure schematic diagram of the present application;

[0024] Figure 2 It is the structure schematic diagram of A of the present application; Figure 1

[0025] Figure 3 It is the whole structure section view schematic diagram of the present application;

[0026] Figure 4 It is the structure schematic diagram of B of the present application; Figure 3

[0027] It is the structure schematic diagram of C of the present application; Figure 5 Figure 3 It is the structure schematic diagram of D of the present application;

[0028] Figure 6 Figure 3 It is the structure schematic diagram of E of the present application;

[0029] Figure 7 It is the structure schematic diagram of F of the present application; Figure 4

[0030] Figure 8 It is the structure schematic diagram of G of the present application; Figure 4

[0031] Figure 9 It is the structure schematic diagram of H of the present application; Figure 7

[0032] It is the installation structure schematic diagram of the friction device of the present application; Figure 10

[0033] It is the structure schematic diagram of H of the present application. Figure 11 Figure 10

[0034] ​​​​​​​In the figure: 1- front drill rod, 2- flush backflow pipe, 3- guide sliding groove, 4- limiting rod, 5- telescopic rod, 6- alarm device, 601- first guide block, 602- second sliding groove, 603- light touch switch, 604- ball, 7- adjusting device, 8- friction device, 801- cylinder, 802- rotating rod, 803- friction plate, 804- friction block, 9- clamping device, 901- rotating handle, 902- clamping rod, 903- limiting sleeve, 904- third sliding groove, 905- second guide block, 906- connecting block, 907- elastic card, 908- clamping groove, 10- sliding block, 11- support plate, 12- fixed pulley, 13- mud guide plate, 14- pull rope, 15- sealing plate, 16- first sliding groove, 17- compression spring, 18- telescopic block, 19- mud scraping plate. DETAILED DESCRIPTION

[0035] Example 1

[0036] Please refer to Figures 1-11 The present application provides a technical solution:

[0037] The utility model provides a kind of depth formula collapsible loess sample collection device and its using method, including front drill rod 1 and flush backflow pipe 2, front drill rod 1 is hollowly arranged, front drill rod 1 is equipped with guide sliding slot 3, the upper outer side of front drill rod 1 is fixedly connected with limiting rod 4, one end of telescopic rod 5 is slidably connected in the inner side of limiting rod 4, alarm device 6 is arranged between limiting rod 4 and telescopic rod 5, alarm device 6 includes first guide block 601, first guide block 601 is fixedly connected on the outer end surface of telescopic rod 5, the inner side of limiting rod 4 is equipped with second sliding slot 602, second sliding slot 602 is fixedly connected with microswitch 603 in the inner side, first guide block 601 is embedded with ball 604 in the inner side, the outer side of ball 604 is slidably connected with second sliding slot 602, the other end of telescopic rod 5 is rotatably connected with one end of adjusting device 7 by pivot, the other end of adjusting device 7 is rotatably connected with sliding block 10 by pivot, the outer side of sliding block 10 is slidably connected with guide sliding slot 3, the outer side of sliding block 10 is fixedly connected with support plate 11, the lower inner side of front drill rod 1 is fixedly connected with fixed pulley 12, the lower portion of front drill rod 1 is rotatably connected with guide mud plate 13 by pivot, the upper outer side of guide mud plate 13 is fixedly connected with one end of pull rope 14, the other end of pull rope 14 is fixedly connected with the lower end surface of support plate 11 by passing fixed pulley 12, so as to utilize the sliding of sliding block 10, drive telescopic rod 5 to move, make the friction force area of overall device gradually increase, so that microswitch 603 can be effectively triggered, in turn make the depth drilling sampling of loess layer effectively realize, the lower portion of front drill rod 1 is fixedly connected with sealing plate 15, the inner side of sealing plate 15 is equipped with first sliding slot 16, one end of compression spring 17 is fixedly connected with the inner side of first sliding slot 16, the other end of compression spring 17 is fixedly connected with one end of telescopic block 18, the outer side of telescopic block 18 is slidably connected with first sliding slot 16, the other end of telescopic block 18 is fixedly connected with scraping plate 19, the outer side of scraping plate 19 is in contact with the outer end surface of guide mud plate 13, so as to utilize the effective telescopic of scraping plate 19, the overall device can effectively avoid the mixing of upper layer non-required soil during sampling, improve the loess layer sampling precision of overall device, adjusting device 7 includes friction device 8 and clamping device 9, friction device 8 includes cylinder body 801, the inner side of cylinder body 801 is fixedly connected with rotating rod 802, a plurality of friction plates 803 with different friction coefficients are installed on the outer end curved surface of cylinder body 801, friction lug 804 is fixedly connected on the outer end surface of friction plate 803, can utilize the guidance of fixed pulley 12 and the traction of pull rope 14, so that guide mud plate 13 can be effectively unfolded at appropriate time, so that the sampling of loess layer can be realized while drilling, improve the sampling efficiency of loess layer drilling sampling, clamping device 9 includes rotating handle 901, the lower end surface of rotating handle 901 is fixedly connected with clamping rod 902 and limiting sleeve 903, the outer side of limiting sleeve 903 is fixedly connected with cylinder body 801, the inner side of limiting sleeve 903 is equipped with third sliding slot 904,The outer side of the rotating rod 802 is fixedly connected with a second guide block 905, and the outer side of the second guide block 905 is slidably connected with the third sliding groove 904, so that the adjustment of the friction device 8 is more convenient. The barrel 801 is provided with a clamping groove 908, the lower end surface of the clamping rod 902 is fixedly connected with a connecting block 906, the outer side of the connecting block 906 is fixedly connected with an elastic clamping piece 907, the elastic clamping piece 907 is arranged in an arc shape, and the outer side of the elastic clamping piece 907 is clamped with the clamping groove 908, so that the overall device is more reasonable. The six limiting rods 4, the six telescopic rods 5, the six adjusting devices 7, the six sliding blocks 10, the six fixed pulleys 12, the six pull ropes 14 and the six mud guide plates 13 are symmetrically arranged around the central axis of the front drill rod 1, so that the stress of the overall device is more balanced.

[0038] Workflow:

[0039] Step one: first, install the front drill rod 1 on the pre-installed main drive drilling device, then connect the flushing return pipe 2, then continuously lengthen the drill rod to deepen the drilling of the overall device. In the initial stage, the friction force on the friction device 8 is small due to the wet subsidence of the shallow loess. In this stage, the telescopic rod 5, the rotating rod 802 and the sliding block 10 do not move relative to each other.

[0040] Step two: as the drilling depth continues to increase, the wet subsidence of the loess is gradually improving, then as the moisture content of the loess decreases and the tightness increases, the friction force on the friction device 8 during rotation will increase. At this time, under the action of the friction force, the friction device 8 will drive the sliding block 10 to move upwards. At the same time, due to the movement of the sliding block 10, the telescopic rod 5 will also be forced to move outward.

[0041] Step three: when the moisture content of the loess further decreases and the tightness further increases, the friction force received by the friction device 8 further increases. At this time, the sliding block 10 continues to move upwards, thereby driving the telescopic rod 5 to further expand and contract through the adjusting device 7. At the same time, due to the upward movement of the sliding block 10, the support plate 11 is driven to move upwards, thereby driving the mud guide plate 13 to rotate outward with the assistance of the fixed pulley 12, so as to sample the loess sample in the front drill rod 1. In this process, the first guide block 601 will gradually approach and contact the tactile switch 603 with the assistance of the ball 604. When the external controller detects that all the tactile switches 603 are triggered, it can be known that the moisture content and tightness of the loess reach a certain standard. Then the front drill rod 1 is taken out, and the loess sample inside the front drill rod 1 is taken out for detection.

[0042] Step four: after the detection, if it is found that the depth of the drill hole needs to be adjusted, pull the rotating handle 901 to make the elastic card 907 disengage from the clamping groove 908, then rotate the rotating handle 901 to drive the friction device 8 to rotate through the limiting of the second guide block 905, when the friction device 8 is rotated to the appropriate position, push the rotating handle 901 downward to make the elastic card 907 on the clamping rod 902 engage with the clamping groove 908 again.

[0043] Step five: due to the change of the positions of the friction plate 903 and the friction block 904 on the friction device 8, the friction coefficient between the overall device and the loess also changes accordingly, then the depth of the loess sample of the overall device can be effectively adjusted.

[0044] The principles and implementation manners of the present application are described by using specific examples in the present application, and the above examples are only used to help understand the method of the present application and its core idea. The above description is only the preferred implementation manner of the present application, and it should be pointed out that due to the limitation of the expression, there are infinite specific structures, and for ordinary skilled in the art, some improvements, decorations or changes can be made without departing from the principles of the present application, and the above technical features can be combined in an appropriate manner; the improvements, decorations, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present application.

Claims

1. A depth setting collapsible loess sample collecting device, comprising a front drill rod (1) and a flushing return pipe (2), the front drill rod (1) is hollow, characterized in that: The front drill rod (1) is provided with a guide sliding groove (3), the upper outer side of the front drill rod (1) is fixedly connected with a limiting rod (4), one end of a telescopic rod (5) is slidably connected to the inner side of the limiting rod (4), an alarm device (6) is arranged between the limiting rod (4) and the telescopic rod (5), the other end of the telescopic rod (5) is rotatably connected with one end of an adjusting device (7) through a rotating shaft, the other end of the adjusting device (7) is rotatably connected with a sliding block (10) through a rotating shaft, the outer side of the sliding block (10) is slidably connected with the guide sliding groove (3), the outer side of the sliding block (10) is fixedly connected with a supporting plate (11), the lower inner side of the front drill rod (1) is fixedly connected with a fixed pulley (12), the lower part of the front drill rod (1) is rotatably connected with a mud guide plate (13) through a rotating shaft, one end of a pull rope (14) is fixedly connected to the upper outer side of the mud guide plate (13), the other end of the pull rope (14) is fixedly connected with the lower end face of the supporting plate (11) after passing through the fixed pulley (12). The adjusting device (7) comprises a friction device (8) and a clamping device (9), the friction device (8) comprises a cylinder (801), the inner side of the cylinder (801) is fixedly connected with a rotating rod (802), a plurality of friction plates (803) with different friction coefficients are installed on the outer end curved surface of the cylinder (801), a friction protrusion (804) is fixedly connected to the outer end face of the friction plate (803); The alarm device (6) comprises a first guide block (601), the first guide block (601) is fixedly connected to the outer end face of the telescopic rod (5), the inner side of the limiting rod (4) is provided with a second sliding groove (602), the inner side of the second sliding groove (602) is fixedly connected with a touch switch (603), the inner side of the first guide block (601) is inlaid with a ball (604), the outer side of the ball (604) is slidably connected with the second sliding groove (602); The clamping device (9) comprises a rotating handle (901), the lower end face of the rotating handle (901) is fixedly connected with a clamping rod (902) and a limiting sleeve (903), the outer side of the limiting sleeve (903) is fixedly connected with the cylinder (801), the inner side of the limiting sleeve (903) is provided with a third sliding groove (904), the outer side of the second guide block (905) is fixedly connected with the rotating rod (802), the outer side of the second guide block (905) is slidably connected with the third sliding groove (904); The cylinder (801) is provided with a clamping groove (908), the lower end face of the clamping rod (902) is fixedly connected with a connecting block (906), the outer side of the connecting block (906) is fixedly connected with an elastic clamping piece (907), the elastic clamping piece (907) is arranged in an arc shape, and the outer side of the elastic clamping piece (907) is clamped with the clamping groove (908).

2. The depth-keeping wet-loess sample collecting device according to claim 1, characterized in that: The lower part of the front drill rod (1) is fixedly connected with an enclosing plate (15), the inner side of the enclosing plate (15) is provided with a first sliding groove (16), one end of a compression spring (17) is fixedly connected with the inner side of the first sliding groove (16), the other end of the compression spring (17) is fixedly connected with one end of an expansion block (18), the outer side of the expansion block (18) is slidingly connected with the first sliding groove (16), the other end of the expansion block (18) is fixedly connected with a mud scraping plate (19), and the outer side of the mud scraping plate (19) is in contact with the outer end surface of the mud guide plate (13).

3. The depth-keeping wet-loess sample collecting device according to claim 1, characterized in that: The limiting rods (4), the expansion rods (5), the adjusting devices (7), the sliding blocks (10), the fixed pulleys (12), the pull ropes (14) and the mud guide plates (13) are all provided with six, and the six limiting rods (4), the expansion rods (5), the adjusting devices (7), the sliding blocks (10), the fixed pulleys (12), the pull ropes (14) and the mud guide plates (13) are all symmetrically distributed around the central axis of the front drill rod (1).

4. The use of the depth-keeping collapsible loess sample collecting device according to claim 1, characterized in that: The method comprises the following steps: Step one: first, the front drill rod (1) is installed on the pre-installed main driving drilling device, then the flushing return pipe (2) is connected, and then the overall device is deepened by continuously lengthening the drill rod; in the initial stage, the friction device (8) is subjected to small friction force due to the wet subsidence of the shallow loess, and the expansion rod (5), the rotating rod (802) and the sliding block (10) do not move relative to each other; Step two: as the drilling depth continues to increase, the wet subsidence of the loess is gradually improved, then as the moisture content of the loess decreases and the tightness increases, the friction force received by the friction device (8) during rotation will become larger and larger, at this time, the friction device (8) will drive the sliding block (10) to move upward under the action of the friction force, and at the same time, the expansion rod (5) will also move outward under the action of force due to the movement of the sliding block (10); Step three: as the moisture content of the loess further decreases and the tightness further increases, the friction force received by the friction device (8) further increases, at this time, the sliding block (10) continues to move upward, thereby driving the expansion rod (5) to further expand and contract through the adjusting device (7), and at the same time, the support plate (11) is driven to move upward due to the upward movement of the sliding block (10), thereby driving the mud guide plate (13) to rotate outward with the assistance of the fixed pulley (12) through the pull rope (14), so as to sample the loess sample in the front drill rod (1), in this process, the first guide block (601) will gradually approach the tactile switch (603) and contact the tactile switch (603) with the assistance of the ball (604), when the external controller detects that all the tactile switches (603) are triggered, it can be known that the moisture content and tightness of the loess reach a certain standard, then the front drill rod (1) is taken out, and the loess sample in the inside of the front drill rod (1) is taken out for detection. Step four: after detection, if it is found that the depth of the drill hole needs to be adjusted, pull the rotating handle (901) to make the elastic card (907) disengage from the clamping groove (908), at this time, rotate the rotating handle (901) to drive the friction device (8) to rotate through the limiting of the second guide block (905), when the friction device (8) is rotated to the appropriate position, push the rotating handle (901) downward, so that the elastic card (907) on the clamping rod (902) and the clamping groove (908) are clamped again. Step five: at this time, due to the change of the positions of the friction plate (803) and the friction block (804) on the friction device (8), the friction coefficient between the overall device and the loess also changes accordingly, and then the loess sampling depth of the overall device can be effectively adjusted.

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