A device for accurately measuring the depth of contaminated soil sampling boreholes used in environmental investigations

Abstract

The present invention relates to a device for accurately measuring the depth of a borehole for sampling contaminated soil for environmental investigation, comprising a support base and a mounting base, wherein a force unloading assembly is arranged between the support base and the mounting base; the top of the mounting base is connected to a support frame through a plurality of groups of hydraulic lifting devices, a driving motor is installed at the bottom of the support frame, and the output shaft of the driving motor extends to the top of the support frame and is fixedly sleeved with a driving gear 2, a driving ring is movably connected to the support frame, and a driving gear is sleeved on the outer wall of the driving ring, a driving sleeve is movably arranged in the driving ring, and the driving sleeve is connected to a drilling measurement assembly through a connecting bracket, and a stabilizing assembly is installed on the drilling measurement assembly. The purpose of the present invention is to overcome the existing defects and provide a device for accurately measuring the depth of a borehole for sampling contaminated soil for environmental investigation, which has high drilling accuracy and measurement accuracy.

Description

Technical Field

[0001] The invention relates to the technical field of drilling, in particular to a device for accurately measuring the depth of a contaminated soil sampling borehole used for environmental investigation. Background Art

[0002] With the acceleration of industrialization and urbanization, soil pollution has become one of the serious environmental problems. Its impact is not limited to the soil itself, but may also have long-term impacts on groundwater and ecosystems.

[0003] Site investigation is one of the first steps in assessing the extent of soil and groundwater contamination. By sampling and analyzing underground soil, the type, concentration and distribution of pollutants can be determined, providing data support for the formulation of effective treatment plans.

[0004] In the prior art: CN202011357798.7-A high-efficiency drilling device used in mining, includes a base, four corners of the base are provided with universal wheels, a fixing device is provided in the middle of the bottom of the base, support columns are symmetrically installed on both sides above the base, a rack plate is fixedly installed on the inner side of the support column, a lifting sleeve is slidably connected to the outside of the support column, the support is hinged with an adjusting rod, one end of the support plate is fixedly installed with a mounting plate, the upper end of the mounting plate is hinged with a fixing frame, the other end of the adjusting rod is hinged with the middle part of the fixing frame, and a drilling mechanism is installed on one side of the fixing frame.

[0005] The drilling depth of the above patent needs to be measured by other means after the drilling is completed, and a rigid fixing device is used under the base for stability, which may easily lead to excessive concentration of the action points and cause damage to the device. In addition, the continuous shaking of the drill bit during drilling cannot guarantee the verticality of the drill hole, thereby reducing the drilling accuracy and measurement accuracy.

[0006] Therefore, in view of the above problems, a device for accurately measuring the depth of contaminated soil sampling boreholes for environmental investigation is proposed. Summary of the invention

[0007] The purpose of the present invention is to overcome the existing defects and provide a device for accurately measuring the depth of a contaminated soil sampling borehole for environmental investigation, which has high drilling accuracy and measurement accuracy.

[0008] The technical scheme for achieving the above-mentioned purpose is: a device for accurately measuring the depth of a borehole for sampling contaminated soil for environmental investigation, comprising a support base and a mounting base, wherein a force unloading assembly is arranged between the support base and the mounting base; the top of the mounting base is connected to a support frame through a plurality of groups of hydraulic lifting devices, a driving motor is installed at the bottom of the support frame, and an output shaft of the driving motor extends to the top of the support frame and is fixedly sleeved with a driving gear 2, a driving ring is movably connected to the support frame, and a driving gear is sleeved on an outer wall of the driving ring, a driving sleeve is movably arranged in the driving ring, and the driving sleeve is connected to a drilling measurement assembly through a connecting bracket, and a stabilizing assembly is installed on the drilling measurement assembly;

[0009] The unloading assembly includes a buffer, a spiral pneumatic spring and a pressure relief unit. The pressure relief unit is provided at the center of the top of the support base. The support base and the mounting seat are connected through several groups of the buffer and the spiral pneumatic spring, and several groups of the spiral pneumatic spring are arranged around the pressure relief unit, and several groups of the buffer are arranged around the spiral pneumatic spring. The bottom of the spiral pneumatic spring is fixedly connected to the support base, and the top of the spiral pneumatic spring extends to the top of the mounting seat and is connected to the air pump through a sealing connector. Several groups of the air pumps are arranged around the top of the mounting seat, and each group of the air pumps corresponds to a group of the spiral pneumatic springs.

[0010] The drilling measurement assembly includes a connecting sleeve and a guide sleeve, wherein the connecting sleeve is fixedly sleeved on the top of the guide sleeve, one end of the connecting bracket is fixedly connected to the driving sleeve, and the other end is fixedly connected to the connecting sleeve; the guide sleeve is movably sleeved on the outer wall of the driving rotating rod, and the top of the driving rotating rod is movably connected to the reciprocating connecting rod, the bottom of the driving rotating rod is fixedly connected to the drill bit, the fixing plate and the supporting plate are both sleeved on the outer wall of the guide sleeve, and the stabilizing assembly is arranged at the four vertex corners of the supporting plate;

[0011] The stabilization assembly includes a support sleeve, which is movably connected to the support plate, a T-threaded rod movably arranged in the support sleeve, and the support sleeve and the T-threaded rod are threadedly connected, a cavity is provided in the T-threaded rod, the T-shaped end of the T-connecting rod is movably arranged in the cavity, the other end of the T-connecting rod abuts against the bottom of the inner wall of the support sleeve, the puncture head is fixedly connected to the bottom of the support sleeve, a through groove is provided on the outer wall of the support sleeve, an anchor hook is movably connected to the top of the puncture head, one end of the first connecting rod is movably connected to the anchor hook, and the other end is movably connected to the T-connecting rod.

[0012] Preferably, the driving gear 1 is meshed with the driving gear 2, the driving sleeve and the driving ring are connected by an axle pin, the bottom of the rotating rod movably passes through the driving sleeve and extends to the bottom of the driving ring, the bottom of the rotating rod is fixedly connected to the bottom of the inner wall of the driving ring, one end of the driving member is movably connected to the top of the rotating rod, and the other end is movably connected to the reciprocating connecting rod.

[0013] Preferably, the fixed plate is located above the supporting plate, and the fixed plate and the supporting plate are connected by a first telescopic rod, the fixed plate is fixedly connected to the guide sleeve, the supporting plate is movably connected to the guide sleeve, and the outer wall of the guide sleeve is provided with a scale for measurement.

[0014] Preferably, the buffer component includes a sealing sleeve and a sealing support rod; the upper end of the sealing sleeve and the lower end of the sealing support rod are both provided with the same ball head structure, and the upper end of the sealing sleeve is movably connected to the bottom of the mounting seat, the lower end of the sealing support rod is movably connected to the top of the supporting base, the top of the sealing support rod movably extends into the sealing sleeve, and a through hole is provided at the top of the sealing support rod, the sealing support rod is a hollow structure, a buffer spring 1 and a ball valve are both provided in the sealing support rod, one end of the buffer spring 1 is fixedly connected to the ball valve, and the other end of the buffer spring 1 is fixedly connected to the bottom of the inner wall of the sealing support rod, the ball valve is movably connected to the inner wall of the sealing support rod, and the cavity formed between the top of the sealing support rod and the top of the inner wall of the sealing sleeve is filled with damping fluid.

[0015] Preferably, the pressure relief unit includes a buffer base and a special-shaped pillar; the buffer base is fixedly connected to the top center of the support base, the guide pillar is fixedly connected to the center of the buffer base, the special-shaped pillar and buffer spring 2 are both sleeved on the outer wall of the guide pillar, and the special-shaped pillar is movably connected to the guide pillar, the two ends of the buffer spring 2 are respectively fixedly connected to the special-shaped pillar and the bottom of the outer wall of the guide pillar, the outer wall of the special-shaped pillar is fixedly provided with a plurality of groups of tooth blocks 1, a driving groove is opened in the buffer base, and a driving gear 3 is movably arranged in the driving groove, two groups of auxiliary support members are symmetrically arranged on both sides of the special-shaped pillar, and the bottom of the auxiliary support member is movably extended into the buffer base, and a plurality of groups of tooth blocks 2 are provided on the side of the auxiliary support member close to the driving gear 3, and the tooth block 1 and the tooth block 2 are both meshed with the driving gear 3.

[0016] Preferably, the top of the auxiliary support member is a U-shaped structure, a buffer sleeve 1 is fixedly connected to the center of the top of the auxiliary support member, and a buffer spring 3 is arranged in the buffer sleeve 1, the vertical section of the T-shaped member is movably arranged in the buffer sleeve 1 and fixedly connected to the buffer spring 3, two groups of buffer sleeves 2 are symmetrically arranged on both sides of the buffer sleeve 1, and the buffer sleeve 2 is fixedly connected to the top of the auxiliary support member, one end of the special-shaped connecting member close to the vertical section of the T-shaped member is fixedly connected to the outer wall of the vertical section of the T-shaped member, and one end of the special-shaped connecting member close to the buffer sleeve 2 is movably arranged in the buffer sleeve 1 The auxiliary support member is movably arranged in the buffer sleeve No. 2, and the buffer sleeve No. 2 is filled with a buffer solution. The top of the U-shaped groove of the auxiliary support member is provided with a horizontal strip guide groove, and the bottom of the push rod is movably arranged in the guide groove. One end of the second telescopic rod is movably connected to the push rod, and the other end is movably connected to the special-shaped connecting member; the U-shaped vertical section of the auxiliary support member is a hollow structure, and a buffer spring No. 4 is arranged in the U-shaped vertical section of the auxiliary support member. One end of the second connecting rod is fixedly connected to the T-shaped member, and the other end is movably arranged in the U-shaped vertical section of the auxiliary support member and fixedly connected to the buffer spring No. 4.

[0017] The beneficial effects of the present invention are as follows: the contaminated soil sampling drilling depth precise measurement device for environmental investigation can synchronously observe the hole depth while drilling, and the setting of the force unloading component can decompose the vibration force generated during drilling to each corner of the device, changing the traditional rigid base contact, avoiding damage to the device caused by excessive concentration of action points, improving safety and thus improving the drilling stability of the device, and the setting of the stabilizing component can limit the drilling measurement component, reduce the continuous shaking that occurs during drilling, and effectively ensure the verticality of the borehole, thereby improving the drilling accuracy and measurement accuracy.

[0018] At the same time, the hydraulic lifting device and the drive device are used to accurately measure the drilling depth, which can ensure the accuracy and reliability of the measurement results. The design of the stabilizing components and supporting structures in the device helps to maintain the stability of the measurement process, reduce interference caused by the external environment or operating errors, and improve the stability and repeatability of the measurement. Using the drive motor and the hydraulic lifting device, the operation during the measurement process is relatively automated, which reduces the impact of human operation and improves the efficiency and accuracy of the measurement. The design of the buffer component and the stabilizing component in the equipment helps to protect the safety of the measuring device and the operator, and reduces the risk of accidents. The measurement method is simple and easy, the operation process is clear and concise, and it is suitable for various drilling scenarios, with high practicality and applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a front view of the present invention;

[0020] Figure 2 is a connection detail diagram of the driving gear 2 of the present invention;

[0021] Figure 3 is a schematic diagram of a drilling measurement assembly of the present invention;

[0022] Figure 4 is a schematic diagram of a stabilizing assembly of the present invention;

[0023] Figure 5 is a schematic diagram of the force unloading assembly of the present invention;

[0024] Figure 6 is a schematic diagram of a buffer member of the present invention;

[0025] Figure 7 is a cross-sectional view of the force unloading assembly of the present invention;

[0026] Figure 8 yes Figure 7 Enlarged view of point A in the middle.

[0027] In the figure: 1. Support base; 2. Unloading assembly; 3. Mounting seat; 4. Hydraulic lifting device; 5. Driving motor; 6. Support frame; 7. Driving gear 1; 8. Driving gear 2; 9. Driving sleeve; 10. Connecting bracket; 11. Drilling measurement assembly; 12. Stabilizing assembly; 13. Driving ring; 14. Driving member; 15. Rotating rod; 16. Reciprocating connecting rod; 17. Driving rotating rod; 18. Connecting sleeve; 19. Fixing plate; 20. First telescopic rod; 21. Guide sleeve; 22. Support plate; 23. Drill bit; 24. T-threaded rod; 25. Cavity; 26. Support sleeve; 27. Through slot; 28. T-connecting rod; 29. ​​Anchor hook; 30. First connecting rod; 31. Piercing head; 32. Buffer part; 33. Helical pneumatic spring; 34. Pressure relief unit; 35. Sealing connector; 36. Air pump; 37. Sealing sleeve; 38. Sealing support rod; 39. Buffer spring one; 40. Through hole; 41. Ball valve; 42. Buffer base; 43. Guide pillar; 44. Buffer spring two; 45. Drive groove; 46. Auxiliary support member; 47. Special-shaped pillar; 48. Gear block one; 49. Drive gear three; 50. T-shaped member; 51. Special-shaped connector; 52. Second telescopic rod; 53. Push rod; 54. Buffer sleeve one; 55. Buffer sleeve two; 56. Buffer; 57. Buffer spring three; 58. Second connecting rod; 59. Buffer spring four; 60. Gear block two. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0029] The present invention will be further described below in conjunction with the accompanying drawings.

[0030] like Figure 1-8 As shown, a device for accurately measuring the depth of a borehole for sampling contaminated soil for environmental investigation comprises a support base 1 and a mounting base 3, wherein a force unloading assembly 2 is arranged between the support base 1 and the mounting base 3; the top of the mounting base 3 is connected to a support frame 6 via a plurality of groups of hydraulic lifting devices 4, a driving motor 5 is installed at the bottom of the support frame 6, and an output shaft of the driving motor 5 extends to the top of the support frame 6 and is fixedly sleeved with a driving gear 2 8, a driving ring 13 is movably connected to the support frame 6, and a driving gear 1 7 is sleeved on the outer wall of the driving ring 13, a driving sleeve 9 is movably arranged in the driving ring 13, and the driving sleeve 9 is connected to a drilling measurement assembly 11 via a connecting bracket 10, and a stabilizing assembly 12 is installed on the drilling measurement assembly 11.

[0031] like Figure 2 As shown, the driving gear 1 7 is meshed with the driving gear 2 8, the driving sleeve 9 and the driving ring 13 are connected by an axle pin, the bottom of the rotating rod 15 movably passes through the driving sleeve 9 and extends to the bottom of the driving ring 13, the bottom of the rotating rod 15 is fixedly connected to the bottom of the inner wall of the driving ring 13, one end of the driving member 14 is movably connected to the top of the rotating rod 15, and the other end is movably connected to the reciprocating connecting rod 16.

[0032] like Figure 3 As shown, the drilling measurement assembly 11 includes a connecting sleeve 18 and a guide sleeve 21, the connecting sleeve 18 is fixedly sleeved on the top of the guide sleeve 21, one end of the connecting bracket 10 is fixedly connected to the driving sleeve 9, and the other end is fixedly connected to the connecting sleeve 18; the guide sleeve 21 is movably sleeved on the outer wall of the driving rotating rod 17, and the top of the driving rotating rod 17 is movably connected to the reciprocating connecting rod 16, the bottom of the driving rotating rod 17 is fixedly connected to the drill bit 23, the fixing plate 19 and the support plate 22 are both sleeved on the outer wall of the guide sleeve 21, and the stabilizing assembly 12 is arranged at the four top corners of the support plate 22. The length of the driving rotating rod 17 and the guide sleeve 21 can be extended or shortened according to the actual needs on site.

[0033] like Figure 3As shown, the fixed plate 19 is located above the supporting plate 22, and the fixed plate 19 and the supporting plate 22 are connected by a first telescopic rod 20, the fixed plate 19 is fixedly connected to the guide sleeve 21, the supporting plate 22 is movably connected to the guide sleeve 21, and the outer wall of the guide sleeve 21 is provided with a scale for measurement.

[0034] Specifically, when in use, after the drive sleeve 9 and the drive ring 13 are fixed by the shaft pin, the drive motor 5 is started to drive the drive gear 2 8 to rotate, and the drive gear 2 8 drives the drive sleeve 9 and the drive ring 13 to rotate synchronously through the drive gear 1 7, thereby driving the drilling measurement assembly 11 to rotate to the drilling position through the connecting bracket 10, and then the shaft pin is pulled out, the drive sleeve 9 and the drive ring 13 are separated, and the drive motor 5 is started again. At this time, the drive ring 13 only drives the rotating rod 15 to rotate, and the rotating rod 15 drives the driving rotating rod 17 to rotate through the driving member 14 and the reciprocating connecting rod 16, and the driving rotating rod 17 is driven in the guide sleeve. 21 rotates while synchronously driving the drill bit 23 to rotate. At the same time, the hydraulic lifting device 4 is started to drive the support frame 6 to descend, and the hydraulic lifting device 4 is closed after the support plate 22 is in contact with the ground. After the guide sleeve 21 is protected by the stabilizing component 12, the hydraulic lifting device 4 is started again. At this time, as the support frame 6 descends, the drill bit 23 is also drilling synchronously, and the guide sleeve 21 will synchronously descend into the hole (the diameter of the drill bit 23 is larger than the diameter of the guide sleeve 21). As the guide sleeve 21 synchronously descends, it can be observed that the support plate 22 is located at the scale position of the outer wall of the guide sleeve 21 (such as Figure 1 The drilling depth at this time is read as shown by the scale on the outer wall of the drilling measurement component 11, and the hole depth data is obtained while drilling.

[0035] The present invention can simultaneously observe the hole depth while drilling, and the setting of the force unloading component 2 can decompose the vibration force generated during drilling to all corners of the device, changing the traditional rigid base contact, avoiding damage to the device caused by excessive concentration of action points, improving safety and thus improving the drilling stability of the device, and the setting of the stabilizing component 12 can limit the drilling measurement component 11, reduce the continuous shaking that occurs during drilling, and effectively ensure the verticality of the borehole, thereby improving the drilling accuracy and measurement accuracy.

[0036] like Figure 4As shown, the stabilization component 12 includes a support sleeve 26, which is movably connected to the support plate 22, a T-threaded rod 24 movably arranged in the support sleeve 26, and the support sleeve 26 and the T-threaded rod 24 are connected by threads, a cavity 25 is provided in the T-threaded rod 24, the T-shaped end of the T-type connecting rod 28 is movably arranged in the cavity 25, the other end of the T-type connecting rod 28 abuts against the bottom of the inner wall of the support sleeve 26, the puncture head 31 is fixedly connected to the bottom of the support sleeve 26, a through groove 27 is provided on the outer wall of the support sleeve 26, an anchor hook 29 is movably connected to the top of the puncture head 31, one end of the first connecting rod 30 is movably connected to the anchor hook 29, and the other end is movably connected to the T-type connecting rod 28.

[0037] Specifically, when the hydraulic lifting device 4 is started to drive the support frame 6 to descend and make the support plate 22 fit the ground, the support sleeve 26 with the puncture head 31 is slightly hammered into the ground, and the T-shaped threaded rod 24 is rotated by an auxiliary tool such as a wrench. Since the T-shaped threaded rod 24 and the support sleeve 26 are connected by threads, when the T-shaped threaded rod 24 first rotates, the T-shaped threaded rod 24 will descend along the inner wall of the support sleeve 26 until the T-shaped threaded rod 24 descends to the bottom of the support sleeve 26. At the same time, the T-shaped threaded rod 24 rotates and drives the support sleeve 26 to rotate as well, so that the puncture head 31 pierces into the ground in a rotating manner and drives the support sleeve 2 After reaching the predetermined depth, the T-threaded rod 24 is reversed. At this time, the support sleeve 26 does not move, while the T-threaded rod 24 moves upward along the inner wall of the support sleeve 26, and drives the T-type connecting rod 28 to move upward. At the same time, the two groups of anchor hooks 29 are pulled along the through groove 27 to spread away from each other through the two groups of first connecting rods 30, so as to penetrate into the soil to achieve the anchoring effect. The stabilizing component 12 is simple to use and is firmly fixed. The setting of the stabilizing component 12 can limit the drilling measurement component 11, reduce the continuous shaking during drilling, and effectively ensure the verticality of the borehole, thereby improving the drilling accuracy and measurement accuracy.

[0038] like Figure 5 As shown, the force unloading assembly 2 includes a buffer 32, a spiral pneumatic spring 33 and a pressure relief unit 34. The pressure relief unit 34 is provided at the center of the top of the support base 1. The support base 1 and the mounting seat 3 are connected by several groups of buffers 32 and spiral pneumatic springs 33, and several groups of spiral pneumatic springs 33 are arranged around the pressure relief unit 34, and several groups of buffers 32 are arranged around the spiral pneumatic springs 33. The bottom of the spiral pneumatic spring 33 is fixedly connected to the support base 1, and the top of the spiral pneumatic spring 33 extends to the top of the mounting seat 3 and is connected to the air pump 36 through a sealing connector 35. Several groups of air pumps 36 are arranged around the top of the mounting seat 3, and each group of air pumps 36 corresponds to a group of spiral pneumatic springs 33.

[0039] like Figure 6As shown, the buffer member 32 includes a sealing sleeve 37 and a sealing support rod 38; the upper end of the sealing sleeve 37 and the lower end of the sealing support rod 38 are both provided with the same ball head structure, and the upper end of the sealing sleeve 37 is movably connected to the bottom of the mounting seat 3, the lower end of the sealing support rod 38 is movably connected to the top of the supporting base 1, the top of the sealing support rod 38 is movably extended into the sealing sleeve 37, and a through hole 40 is provided at the top of the sealing support rod 38, the sealing support rod 38 is a hollow structure, a buffer spring 39 and a ball valve 41 are both provided in the sealing support rod 38, one end of the buffer spring 39 is fixedly connected to the ball valve 41, and the other end of the buffer spring 39 is fixedly connected to the bottom of the inner wall of the sealing support rod 38, the ball valve 41 is movably connected to the inner wall of the sealing support rod 38, and the cavity formed between the top of the sealing support rod 38 and the top of the inner wall of the sealing sleeve 37 is filled with damping liquid.

[0040] like Figure 7 As shown, the pressure relief unit 34 includes a buffer base 42 and a special-shaped pillar 47; the buffer base 42 is fixedly connected to the top center of the support base 1, the guide pillar 43 is fixedly connected to the center of the buffer base 42, the special-shaped pillar 47 and the buffer spring 2 44 are both sleeved on the outer wall of the guide pillar 43, and the special-shaped pillar 47 is movably connected to the guide pillar 43, the two ends of the buffer spring 2 44 are respectively fixedly connected to the special-shaped pillar 47 and the bottom of the outer wall of the guide pillar 43, a plurality of groups of tooth blocks 1 48 are fixedly provided on the outer wall of the special-shaped pillar 47, a driving groove 45 is opened in the buffer base 42, and a driving gear 3 49 is movably provided in the driving groove 45, two groups of auxiliary support members 46 are symmetrically arranged on both sides of the special-shaped pillar 47, and the bottom of the auxiliary support member 46 is movably extended into the buffer base 42, and a plurality of groups of tooth blocks 2 60 are provided on the side of the auxiliary support member 46 close to the driving gear 3 49, and the tooth blocks 1 48 and the tooth blocks 2 60 are both meshed with the driving gear 3 49.

[0041] like Figure 8As shown, the top of the auxiliary support member 46 is a U-shaped structure, the buffer sleeve 1 54 is fixedly connected to the center of the top of the auxiliary support member 46, and the buffer sleeve 1 54 is provided with a buffer spring 3 57, the vertical section of the T-shaped member 50 is movably arranged in the buffer sleeve 1 54 and fixedly connected to the buffer spring 3 57, two groups of buffer sleeves 2 55 are symmetrically arranged on both sides of the buffer sleeve 1 54, and the buffer sleeve 2 55 is fixedly connected to the top of the auxiliary support member 46, and one end of the special-shaped connecting member 51 close to the vertical section of the T-shaped member 50 is fixedly connected to the outer wall of the vertical section of the T-shaped member 50, and one end of the special-shaped connecting member 51 close to the buffer sleeve 2 55 is movably arranged The auxiliary support member 46 is in the buffer sleeve 55, and the buffer sleeve 55 is filled with a buffer solution 56. A horizontal strip guide groove is provided at the top of the U-shaped groove of the auxiliary support member 46, and the bottom of the push rod 53 is movably arranged in the guide groove. One end of the second telescopic rod 52 is movably connected to the push rod 53, and the other end is movably connected to the special-shaped connecting member 51; the U-shaped vertical section of the auxiliary support member 46 is a hollow structure, and a buffer spring four 59 is arranged in the U-shaped vertical section of the auxiliary support member 46. One end of the second connecting rod 58 is fixedly connected to the T-shaped member 50, and the other end is movably arranged in the U-shaped vertical section of the auxiliary support member 46 and fixedly connected to the buffer spring four 59.

[0042] Specifically, due to the complexity of the construction environment and the fact that the mounting base 3 needs to bear the weight of most of the device, as well as the influence of various factors such as vibration occurring during drilling, the entire drilling measurement device is in a dynamic transformation state. The pressure or shaking force from the mounting base 3 will first be dispersed preliminarily through a plurality of groups of spiral pneumatic springs 33, and then further buffered by the buffer 32. At this time, relative sliding will occur between the sealing sleeve 37 and the sealing support rod 38, and the damping liquid in the cavity formed between the top of the sealing support rod 38 and the top of the inner wall of the sealing sleeve 37 will first play a buffering role, and then the damping liquid will push the ball valve 41 into the inner cavity of the sealing support rod 38 through the through hole 40. During the process, since the aperture of the through hole 40 is limited and the buffer spring 39 will exert a reverse thrust on the ball valve 41 at this time, the stretching speed between the sealing sleeve 37 and the sealing support rod 38 is limited, thereby ensuring that there is no instantaneous tilt between the support base 1 and the mounting base 3. If it is found that the mounting base 3 is not in a horizontal state and tilts in a certain direction, the inflation amount of the spiral pneumatic spring 33 at this location can be adjusted by the air pump 36 to make the mounting base 3 tend to a horizontal state (it should be noted that this only plays an auxiliary role. When selecting the placement position of the device, it is still necessary to ensure that the ground is as horizontal as possible). When the mounting base 3 suffers an accident or an extreme situation occurs (such as hydraulic The lifting device 4 fails after long-term use). After the pressure applied by the mounting seat 3 to the buffer 32 and the spiral pneumatic spring 33 exceeds its buffer range, the mounting seat 3 abuts against the special-shaped pillar 47 and presses the special-shaped pillar 47 to descend along the guide pillar 43. At the same time, the buffer spring 2 44 is compressed to absorb a part of the dynamic potential energy. When the several groups of tooth blocks 1 48 arranged on the outer wall of the special-shaped pillar 47 are engaged with the driving gear 3 49, the driving gear 3 49 is driven to rotate and the auxiliary support member 46 is driven to move upward through the several groups of tooth blocks 2 60 until the T-shaped member 50 abuts against the bottom of the mounting seat 3 to play a supporting effect, and further buffer protection is provided through the buffer spring 3 57 and the buffer spring 4 59. When the T-shaped member 50 descends, it will drive the special-shaped connecting member 51 to move downward along the inner wall of the buffer sleeve 55, and the buffer 56 in the buffer sleeve 55 can slow down its displacement speed, and push the push rod 53 toward the direction of the U-shaped vertical section close to the auxiliary support member 46 through the second telescopic rod 52, and support the special-shaped connecting member 51 after abutting against the U-shaped vertical section of the auxiliary support member 46, thereby avoiding damage to the device caused by excessive concentration of action points, improving safety and improving the stability of the drilling effect of the device. Through the setting of the unloading component 2, the vibration force generated during drilling can be decomposed to every corner of the device, changing the traditional rigid base contact and greatly improving safety.

[0043] The contaminated soil sampling drilling depth precision measurement device used for environmental investigation can synchronously observe the hole depth while drilling, and the setting of the force unloading component 2 can decompose the vibration force generated during drilling to every corner of the device, changing the traditional rigid base contact, avoiding damage to the device caused by excessive concentration of action points, improving safety and thus improving the drilling stability of the device, and the setting of the stabilizing component 12 can limit the drilling measurement component 11, reduce the continuous shaking during drilling, and effectively ensure the verticality of the borehole, thereby improving the drilling accuracy and measurement accuracy.

[0044] At the same time, accurate measurement of the drilling depth is achieved through the hydraulic lifting device 4 and the driving device, which can ensure the accuracy and reliability of the measurement results. The stabilizing component 12 and the support structure design in the device help to maintain the stability of the measurement process, reduce interference caused by the external environment or operating errors, and improve the stability and repeatability of the measurement. Using the drive motor 5 and the hydraulic lifting device 4, the operation during the measurement process is relatively automated, reducing the impact of human operation and improving the efficiency and accuracy of the measurement. The design of the buffer component and the stabilizing component in the equipment helps to protect the safety of the measuring device and the operator, and reduces the risk of accidents. The measurement method is simple and easy, the operation process is clear and concise, and it is suitable for various drilling scenarios, with high practicality and applicability.

[0045] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments may still be modified, or some or all of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for accurately measuring the depth of a contaminated soil sampling borehole for environmental investigation, characterized in that: The invention comprises a support base (1) and a mounting base (3), wherein a force unloading assembly (2) is arranged between the support base (1) and the mounting base (3); the top of the mounting base (3) is connected to a support frame (6) via a plurality of groups of hydraulic lifting devices (4); a drive motor (5) is installed at the bottom of the support frame (6); an output shaft of the drive motor (5) extends to the top of the support frame (6) and is fixedly sleeved with a second drive gear (8); a drive ring (13) is movably connected to the support frame (6); a first drive gear (7) is sleeved on an outer wall of the drive ring (13); a drive sleeve (9) is movably arranged in the drive ring (13); and the drive sleeve (9) is connected to a drilling measurement assembly (11) via a connecting bracket (10); and a stabilizing assembly (12) is installed on the drilling measurement assembly (11); The unloading assembly (2) comprises a buffer (32), a spiral pneumatic spring (33) and a pressure relief unit (34); the pressure relief unit (34) is provided at the center of the top of the support base (1); the support base (1) and the mounting seat (3) are connected via a plurality of groups of the buffer (32) and the spiral pneumatic spring (33); a plurality of groups of the spiral pneumatic spring (33) are arranged around the pressure relief unit (34); a plurality of groups of the buffer (32) are arranged around the spiral pneumatic spring (33); the bottom of the spiral pneumatic spring (33) is fixedly connected to the support base (1); the top of the spiral pneumatic spring (33) extends to the top of the mounting seat (3) and is connected to the air pump (36) via a sealing connector (35); a plurality of groups of the air pump (36) are arranged around the top of the mounting seat (3); and each group of the air pump (36) corresponds to a group of the spiral pneumatic spring (33); The drilling measurement assembly (11) comprises a connecting sleeve (18) and a guide sleeve (21), wherein the connecting sleeve (18) is fixedly sleeved on the top of the guide sleeve (21), and one end of the connecting bracket (10) is fixedly connected to the driving sleeve (9), and the other end is fixedly connected to the connecting sleeve (18); the guide sleeve (21) is movably sleeved on the outer wall of the driving rotating rod (17), and the top of the driving rotating rod (17) is movably connected to the reciprocating connecting rod (16), and the bottom of the driving rotating rod (17) is fixedly connected to the drill bit (23); the fixing plate (19) and the support plate (22) are both sleeved on the outer wall of the guide sleeve (21), and the stabilizing assembly (12) is arranged at the four top corners of the support plate (22); The stabilizing assembly (12) comprises a support sleeve (26), the support sleeve (26) being movably connected to the support plate (22), a T-shaped threaded rod (24) being movably arranged in the support sleeve (26), and the support sleeve (26) and the T-shaped threaded rod (24) being connected via a thread, a cavity (25) being arranged in the T-shaped threaded rod (24), a T-shaped end of a T-shaped connecting rod (28) being movably arranged in the cavity (25), the other end of the T-shaped connecting rod (28) being in contact with the bottom of the inner wall of the support sleeve (26), a puncture head (31) being fixedly connected to the bottom of the support sleeve (26), a through groove (27) being provided on the outer wall of the support sleeve (26), an anchor hook (29) being movably connected to the top of the puncture head (31), one end of a first connecting rod (30) being movably connected to the anchor hook (29), and the other end of the first connecting rod (30) being movably connected to the T-shaped connecting rod (28); The driving gear 1 (7) is meshed with the driving gear 2 (8); the driving sleeve (9) and the driving ring (13) are connected via an axle pin; the bottom of the rotating rod (15) movably passes through the driving sleeve (9) and extends to the bottom of the driving ring (13); the bottom of the rotating rod (15) is fixedly connected to the bottom of the inner wall of the driving ring (13); one end of the driving member (14) is movably connected to the top of the rotating rod (15), and the other end is movably connected to the reciprocating connecting rod (16); The pressure relief unit (34) comprises a buffer base (42) and a special-shaped pillar (47); the buffer base (42) is fixedly connected to the center of the top of the support base (1); the guide pillar (43) is fixedly connected to the center of the buffer base (42); the special-shaped pillar (47) and the second buffer spring (44) are both sleeved on the outer wall of the guide pillar (43); the special-shaped pillar (47) is movably connected to the guide pillar (43); the two ends of the second buffer spring (44) are respectively fixedly connected to the bottom of the outer wall of the special-shaped pillar (47) and the guide pillar (43); the special-shaped pillar The outer wall of the auxiliary support member (47) is fixedly provided with a plurality of groups of tooth blocks (48), a driving groove (45) is provided in the buffer base (42), a driving gear (49) is movably provided in the driving groove (45), two groups of auxiliary support members (46) are symmetrically provided on both sides of the special-shaped support member (47), and the bottom of the auxiliary support member (46) is movably extended into the buffer base (42), and a plurality of groups of tooth blocks (60) are provided on a side of the auxiliary support member (46) close to the driving gear (49), and the tooth blocks (48) and the tooth blocks (60) are both meshed with the driving gear (49).

2. The device for accurately measuring the depth of a contaminated soil sampling borehole for environmental investigation according to claim 1 is characterized in that: The fixing plate (19) is located above the supporting plate (22), and the fixing plate (19) and the supporting plate (22) are connected via a first telescopic rod (20); the fixing plate (19) is fixedly connected to a guide sleeve (21); the supporting plate (22) and the guide sleeve (21) are movably connected; and a scale for measurement is provided on an outer wall of the guide sleeve (21).

3. The device for accurately measuring the depth of a contaminated soil sampling borehole for environmental investigation according to claim 1 is characterized in that: The buffer member (32) comprises a sealing sleeve (37) and a sealing support rod (38); the upper end of the sealing sleeve (37) and the lower end of the sealing support rod (38) are both provided with the same ball head structure, and the upper end of the sealing sleeve (37) is movably connected to the bottom of the mounting seat (3), and the lower end of the sealing support rod (38) is movably connected to the top of the support base (1), and the top of the sealing support rod (38) movably extends into the sealing sleeve (37), and the top of the sealing support rod (38) is provided with a through hole (40), and the The sealing support rod (38) has a hollow structure. A buffer spring (39) and a ball valve (41) are both arranged in the sealing support rod (38). One end of the buffer spring (39) is fixedly connected to the ball valve (41), and the other end of the buffer spring (39) is fixedly connected to the bottom of the inner wall of the sealing support rod (38). The ball valve (41) is movably connected to the inner wall of the sealing support rod (38). The cavity formed between the top of the sealing support rod (38) and the top of the inner wall of the sealing sleeve (37) is filled with damping liquid.

4. The device for accurately measuring the depth of a contaminated soil sampling borehole for environmental investigation according to claim 3 is characterized in that: The top of the auxiliary support member (46) is a U-shaped structure, a buffer sleeve 1 (54) is fixedly connected to the center of the top of the auxiliary support member (46), and a buffer spring 3 (57) is arranged in the buffer sleeve 1 (54), a vertical section of the T-shaped member (50) is movably arranged in the buffer sleeve 1 (54) and fixedly connected to the buffer spring 3 (57), two groups of buffer sleeves 2 (55) are symmetrically arranged on both sides of the buffer sleeve 1 (54), and the buffer sleeve 2 (55) is fixedly connected to the top of the auxiliary support member (46), one end of the special-shaped connecting member (51) close to the vertical section of the T-shaped member (50) is fixedly connected to the outer wall of the vertical section of the T-shaped member (50), and one end of the special-shaped connecting member (51) close to the buffer sleeve 2 (55) is fixedly connected to the outer wall of the vertical section of the T-shaped member (50). The second end of the auxiliary support member (46) is movably arranged in the buffer sleeve (55), and the buffer sleeve (55) is filled with a buffer (56). The top of the U-shaped groove of the auxiliary support member (46) is provided with a horizontal strip guide groove, and the bottom of the push rod (53) is movably arranged in the guide groove. One end of the second telescopic rod (52) is movably connected to the push rod (53), and the other end is movably connected to the special-shaped connecting member (51); the U-shaped vertical section of the auxiliary support member (46) is a hollow structure, and a buffer spring four (59) is arranged in the U-shaped vertical section of the auxiliary support member (46). One end of the second connecting rod (58) is fixedly connected to the T-shaped member (50), and the other end is movably arranged in the U-shaped vertical section of the auxiliary support member (46) and fixedly connected to the buffer spring four (59).

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