Detachable hydraulic pulling device for light dynamic penetrometer

By designing a detachable hydraulic lifting device, the problem of difficulty in lifting when the depth exceeds 1.5m of the hard soil layer is solved by using the core hydraulic jack and fixed bracket assembly, and the problem of difficulty in lifting the light power detector when the depth exceeds 1.5m, achieving smooth pulling and depth expansion of the probe rod.

CN222809978UActive Publication Date: 2025-04-29LIAONING ARCHITECTURAL DESIGN & RES INST GEOTECHNICAL ENG CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202421681119.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-16
Publication Date
2025-04-29
Estimated Expiration
2034-07-16

AI Technical Summary

Technical Problem

When the light-duty power detector penetrates a hard soil layer with a depth of more than 1.5m, the lifting probe needs to overcome large soil friction and squeeze pressure, which leads to difficulty in lifting. The lifting force provided by the existing artificial lever device is limited, and it is easy to cause eccentric tension and bending of the probe rod.

Method used

A detachable hydraulic lifting device is designed to provide sufficient pulling force using a core hydraulic jack, and the eccentric force problem is solved by combining the jack with fixed brackets, pressure bearing plates and other components to solve the problem of eccentric force when pulling on the probe rod.

Benefits of technology

The smooth pulling of the probe rod is achieved, the problem of insufficient pulling force provided by traditional artificial lever devices is overcome, the eccentric tension and bending of the probe rod is avoided, and the depth application of the light-duty power contact detector is expanded.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN222809978U_ABST
    Figure CN222809978U_ABST
Patent Text Reader

Abstract

The utility model relates to the technical field of geotechnical engineering investigation, in particular to a detachable hydraulic pulling device for a light dynamic penetrometer, which comprises a bearing plate, a cross-core hydraulic jack, a connecting rod piece and a cross-core cone, the connecting rod piece penetrates through a hydraulic jack center-penetrating hole of the center-penetrating hydraulic jack, and then the lower end of the connecting rod piece is fixedly connected with the top of the light dynamic sounding rod. A center-penetrating cone is arranged at the top of a hydraulic jack movable plunger of the center-penetrating hydraulic jack. The upper end of the connecting rod piece penetrates through the center penetrating cone and then presses the center penetrating cone against the top of the movable plunger of the hydraulic jack. According to the detachable hydraulic pulling device for the light dynamic penetrometer, the problem of upward pulling force is effectively solved through the hydraulic jack, the problem of eccentric stress during upward pulling of the probe rod is effectively solved through combination of the jack, the fixing support, the bearing plate and other assemblies, and the device is detachable, easy and convenient to install, convenient to carry and reliable in use.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model relates to the technical field of geotechnical engineering investigation, in particular to a detachable hydraulic lifting and pulling device for a light dynamic penetration instrument. Background Art

[0002] The light dynamic penetration instrument is an instrument used in one of the conventional in-situ testing methods in geotechnical engineering investigation. It uses a 10kg drop weight to drive a standard-specification conical probe into the soil layer at a free fall distance of 50cm, and determines the properties of the soil layer based on the difficulty of the probe penetration. The light dynamic penetration instrument test is generally used for penetration depths of less than 4m for clay, plain fill soil composed of clay, and silt. It can also be used for in-situ testing of sandy soil layers. Because the light dynamic penetration instrument is light, easy to operate, and can quickly and accurately obtain the properties of the soil layer, it is one of the more common methods for in-situ testing in geotechnical engineering investigation, especially an important means of reviewing the bearing capacity of the foundation test pit. Therefore, the light dynamic penetration instrument is widely used in the field of geotechnical engineering investigation.

[0003] The diameter of the probe of the light dynamic penetration instrument is 40mm, and the diameter of the connecting probe rod is 25mm. Since the diameter of the probe is larger than the diameter of the connecting rod, when the probe penetrates more than 1.5m into the hard soil layer, the pulling out of the probe rod needs to overcome very large soil friction and extrusion force, and it is difficult to pull it out manually. At present, most of the methods for pulling out the probe rod are simple pulling devices using the principle of levers. Since the principle of levers is eccentric force, it is not easy to find a good fulcrum on site. When pulling out the probe rod, it is easy to cause the probe rod to be pulled eccentrically, resulting in failure to pull out or even bending the probe rod. And because the pulling force provided by the artificial lever principle is limited, it is more difficult to pull out when the probe probe penetrates more than 3m into the hard soil layer. Limited by the lack of a reliable probe rod pulling device, the depth of today's light dynamic penetration generally does not exceed 2m. Therefore, a detachable hydraulic pulling device for a light dynamic penetration instrument is proposed. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a detachable hydraulic pulling device for a light dynamic probe. The detachable hydraulic pulling device for a light dynamic probe utilizes a hydraulic jack to effectively solve the pulling force problem, and effectively solves the eccentric force problem when the probe rod is pulled up by combining the jack with a fixed bracket, a pressure plate and other components. The device is detachable, easy to install, easy to carry and reliable to use.

[0005] The technical solution of the utility model is as follows:

[0006] A detachable hydraulic lifting and pulling device for a light power sounding instrument comprises a pressure plate, a through-hole hydraulic jack, a connecting rod and a through-hole cone. The through-hole hydraulic jack is detachably fixedly mounted at the top center position of the pressure plate. The connecting rod passes through the hydraulic jack through-hole of the through-hole hydraulic jack and is fixedly connected to the top of the light power sounding rod at the lower end. A through-hole cone is arranged on the top of the hydraulic jack active plunger of the through-hole hydraulic jack. The upper end of the connecting rod passes through the through-hole cone and presses the through-hole cone against the top of the hydraulic jack active plunger.

[0007] The upper end of the connecting rod is threadedly connected with a nut, and the nut presses the through-cone against the top of the movable plunger of the hydraulic jack.

[0008] The through-hole hydraulic jack is connected to the hydraulic pump through a hydraulic pump pipe.

[0009] The hydraulic pump is a manual hydraulic pump or an electric hydraulic pump.

[0010] A jack plunger limiting plate is arranged just above the connecting rod, and the jack plunger limiting plate is fixedly arranged just above the connecting rod.

[0011] The bottom of the through-core hydraulic jack is fixedly mounted on the pressure plate through an angle steel fixed support assembly, the angle steel fixed support assembly includes an angle steel body and an angle steel fixed support assembly rubber gasket, the horizontal plate of the angle steel body is detachably fixedly mounted on the pressure plate, the vertical plate of the angle steel body is pressed against the outer side of the bottom of the through-core hydraulic jack, and the angle steel fixed support assembly rubber gasket is arranged between the vertical plate of the angle steel body and the through-core hydraulic jack.

[0012] A bolt connection hole is arranged on the horizontal plate of the angle steel body, and an oblong hole matching with the bolt connection hole is arranged on the pressure plate. The angle steel body is connected to the oblong hole of the pressure plate in an adjustable position by bolt fastening.

[0013] A vertical fixing bracket assembly is detachably fixedly mounted on the pressure plate, and four vertical fixing bracket assemblies are respectively arranged around the through-hole hydraulic jack.

[0014] A horizontal fixing bracket assembly is fixedly installed between the tops of the four vertical fixing bracket assemblies, and the jack plunger limiting plate is fixedly arranged on the bottom of the horizontal fixing bracket assembly.

[0015] The distance between the top of the connecting rod and the jack plunger limit plate shall not be greater than the maximum lifting distance of the movable plunger of the hydraulic jack.

[0016] The beneficial effects of the utility model are:

[0017] 1. The utility model discloses a detachable hydraulic pulling device for a light dynamic probe, which provides sufficient pulling force and effectively solves the problem of insufficient pulling force.

[0018] 2. The utility model discloses a detachable hydraulic pulling device for a light dynamic probe. The detachable hydraulic pulling device for a light dynamic probe adopts a through-hole hydraulic jack to realize the smooth pulling up of the probe rod, effectively solving the problems of eccentric tensile bending or connecting rod sliding and disengaging when the probe rod is pulled up.

[0019] 3. The utility model discloses a detachable hydraulic pulling device for a light dynamic probe. The detachable hydraulic pulling device for a light dynamic probe is detachable and easy to install and carry, and has strong applicability.

[0020] 4. The utility model discloses a detachable hydraulic pulling device for a light power probe. The detachable hydraulic pulling device for a light power probe is also suitable for pulling out drill (probe) rods of other diameters, has a wide range of applications and an advanced structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] By reading the detailed description of the preferred embodiment below, the scheme and advantages of the present application will become clear to those skilled in the art. The accompanying drawings are only used to illustrate the preferred embodiment and are not considered to be limiting of the present invention.

[0022] In the attached picture:

[0023] Figure 1 This is a structural schematic diagram of a detachable hydraulic extraction device for a light dynamic penetration instrument according to an embodiment of the utility model;

[0024] Figure 2 for Figure 1 A top view of

[0025] Figure 3 It is a three-dimensional structural schematic diagram of a detachable angle steel fixing support assembly of a hydraulic extraction device for a light dynamic probe according to an embodiment of the utility model;

[0026] Figure 4 This is a structural schematic diagram of a detachable vertical fixing bracket assembly of a hydraulic extraction device for a light dynamic penetration instrument according to an embodiment of the utility model;

[0027] Figure 5 This is a schematic structural diagram of a detachable screw rod fixing support for a hydraulic extraction device of a light dynamic penetration instrument according to an embodiment of the utility model;

[0028] Figure 6 This is a structural schematic diagram of a detachable horizontal fixing bracket assembly of a hydraulic extraction device for a light dynamic probe according to an embodiment of the utility model;

[0029] Figure 7 A top view and a cross-sectional view of a clamp of a detachable rod clamp of a hydraulic extraction device for a light dynamic probe according to an embodiment of the utility model;

[0030] The components represented by the reference numerals in the figure are:

[0031] The utility model: 1. pressure plate, 2. through-core hydraulic jack, 3. angle steel fixed support assembly, 4. vertical fixed support assembly, 5. screw fixed support, 6. horizontal fixed support assembly, 7. connecting rod, 8. through-core cone, 9. nut, 10. rod clamp, 11. rod connection thread, 12. bolt connection pair, 13. hydraulic pump pipe, 14. hydraulic pump, 15. light power feeler rod, 16. light power feeler probe, 101. center circular hole of pressure plate, 102. bolt slot hole, 201. hydraulic jack Through hole, 202, movable plunger of hydraulic jack, 301, rubber gasket of angle steel fixed support assembly, 302, bolt connection hole, 401, upper connecting rod of vertical fixed bracket, 402, lower connecting rod of vertical fixed bracket, 403, upper and lower rod connecting thread, 404, screw fixer connection hole, 405, nut, 501, rubber gasket of screw fixer, 502, shallow hole of rubber gasket, 601, jack plunger limit plate, 602, screw connection pair, 603, vertical fixed bracket connection hole, 1001, clip. DETAILED DESCRIPTION

[0032] like Figures 1 to 7 As shown, the detachable hydraulic pulling device for a light dynamic probe comprises a pressure plate 1, a through-core hydraulic jack 2, a connecting rod 7 and a through-core cone 8. The through-core hydraulic jack 2 is detachably fixedly mounted at the top center position of the pressure plate 1. After the connecting rod 7 passes through the hydraulic jack through-hole 201 of the through-core hydraulic jack 2, the lower end is fixedly connected to the top of the light dynamic probe rod 15. A through-core cone 8 is arranged on the top of the hydraulic jack active plunger 202 of the through-core hydraulic jack 2. After the upper end of the connecting rod 7 passes through the through-core cone 8, the through-core cone 8 is pressed against the top of the hydraulic jack active plunger 202.

[0033] The upper end of the connecting rod 7 is threadedly connected with a nut 9, and the nut 9 presses the through-cone 8 against the top of the movable plunger 202 of the hydraulic jack.

[0034] The through-core hydraulic jack 2 is connected to the hydraulic pump 14 via a hydraulic pump pipe 13 .

[0035] The hydraulic pump 14 is a manual hydraulic pump or an electric hydraulic pump.

[0036] A jack plunger limiting plate 601 is arranged just above the connecting rod 7 , and the jack plunger limiting plate 601 is fixedly arranged just above the connecting rod 7 .

[0037] The bottom of the through-core hydraulic jack 2 is fixedly mounted on the pressure plate 1 through an angle steel fixed support assembly 3. The angle steel fixed support assembly 3 includes an angle steel body and an angle steel fixed support assembly rubber gasket 301. The horizontal plate of the angle steel body is detachably fixedly mounted on the pressure plate 1. The vertical plate of the angle steel body is pressed against the outer side of the bottom of the through-core hydraulic jack 2. The angle steel fixed support assembly rubber gasket 301 is arranged between the vertical plate of the angle steel body and the through-core hydraulic jack 2.

[0038] A bolt connection hole 302 is provided on the horizontal plate of the angle steel body, and an oblong hole matching the bolt connection hole 302 is provided on the pressure plate 1. The angle steel body can be connected to the oblong hole of the pressure plate 1 in an adjustable position by bolt fastening.

[0039] A vertical fixing bracket assembly 4 is detachably fixedly mounted on the pressure plate 1 , and four vertical fixing bracket assemblies 4 are respectively arranged around the through-core hydraulic jack 2 .

[0040] A horizontal fixing bracket assembly 6 is fixedly installed between the tops of the four vertical fixing bracket assemblies 4 , and the jack plunger limiting plate is fixedly arranged at the bottom of the horizontal fixing bracket assembly 6 .

[0041] The distance between the top of the connecting rod 7 and the jack plunger limit plate 601 is not greater than the maximum lifting distance of the movable plunger 202 of the hydraulic jack.

[0042] The device uses a hydraulic jack to provide a steady upward pulling force, and effectively solves the eccentric force problem when the probe rod is pulled up by combining the jack with a fixed bracket, a pressure plate and other components, so that the pulling out of the probe rod is not limited by the penetration depth of the probe rod. The device is detachable, and the hydraulic jack can be used alone at ordinary times. The device can be used in combination with different models of through-hole hydraulic jacks by adjusting the bottom angle steel fixed support to achieve functions such as pulling out other drill rods of different diameters or applying preload force to anti-floating anchor rods. The device has strong applicability, reliable use, simple installation and easy to carry.

[0043] The working principles of the device are mainly:

[0044] A through-hole hydraulic jack is arranged in the device to provide sufficient pulling force; the hydraulic jack can be connected to either a manual hydraulic pump or an electric hydraulic pump, and is suitable for different working conditions in the field; a jack plunger limit end is arranged in the device to ensure that the jack does not exceed the maximum lifting height; a pressure plate is arranged at the bottom of the device to prevent the device from tilting and failing to pull out the probe rod; a fixed bracket and a slidable fixed support are arranged in the device to fix the jack to prevent eccentric force from being applied when pulling out the rod and causing failure to pull out; the device is detachable, easy to install and convenient to carry.

[0045] In a specific embodiment:

[0046] The detachable hydraulic lifting and pulling device for a light dynamic probe comprises a pressure plate 1, a through-core hydraulic jack 2 installed at the center of the pressure plate, an angle steel fixing support 3 for fixing, a vertical fixing bracket assembly 4 installed on the pressure plate connected by a nut, a screw fixing support 5 fixing the through-core hydraulic jack 2 by the vertical fixing bracket assembly 4, a horizontal fixing bracket assembly 6 installed on the vertical fixing bracket assembly 4, and a connecting rod 7 passing through the center hole of the through-core hydraulic jack; the connecting rod 7 passes through the hydraulic jack and is connected to the light dynamic probe rod 15, and the rod connection method is a threaded connection; the connecting rod 7 passes through a through-core cone 8, and is connected to the light dynamic probe rod 15 through a nut 9 or a rod clamp 10 to form a whole; the hydraulic jack movable plunger 202 lifts and pulls out the light dynamic probe rod 15, and the light dynamic probe head 16 is arranged at the lowermost end of the light dynamic probe rod 15.

[0047] like Figure 1 and Figure 2 As shown, a pressure plate center circular hole 101 and a bolt slot hole 102 are provided on the pressure plate 1. The double bolt slot hole 102 is an oblong hole for fixing and installing the angle steel fixed support assembly 3. A hydraulic jack through hole 201 is provided at the center of the hydraulic jack active plunger 202 of the through-hole hydraulic jack 2.

[0048] like Figure 3 As shown, the angle steel fixing support assembly 3 includes an angle steel fixing support assembly rubber gasket 301 and an angle steel body, and bolt connection holes 302 are arranged on the horizontal plate of the angle steel body.

[0049] like Figure 4As shown, the vertical fixing bracket assembly 4 consists of a vertical fixing bracket upper connecting rod 401, a vertical fixing bracket lower connecting rod 402 and an upper and lower rod connecting thread 403. The lower end of the vertical fixing bracket upper connecting rod 401 and the upper end of the vertical fixing bracket lower connecting rod 402 are respectively threadedly connected to the upper and lower ends of the upper and lower rod connecting threads 403, and a transverse screw fixer connecting hole 404 is provided in the middle of the upper and lower rod connecting threads 403. Two nuts 405 are respectively threadedly connected to the lower end of the vertical fixing bracket lower connecting rod 402 and the middle and upper ends of the vertical fixing bracket upper connecting rod 401.

[0050] like Figure 5 As shown, the rod body of the screw fixing support 5 is threadedly matched with the screw fixer connecting hole 404, a screw fixer rubber gasket 501 is fixedly provided on the inner end portion of the screw fixing support 5, and a rubber gasket shallow hole 502 is provided on the outer end surface of the screw fixer rubber gasket 501.

[0051] like Figure 6 As shown, the horizontal fixed bracket assembly 6 includes two vertical horizontal fixed brackets fixedly connected by a screw connection pair 602, and vertical fixed bracket connecting holes 603 that cooperate with the connecting rod 401 on the vertical fixed bracket are provided at both ends of the horizontal fixed bracket, and the jack plunger limit plate 601 is fixedly connected to the bottom of the horizontal fixed bracket.

[0052] like Figure 7 As shown, the rod clamp 10 is composed of a two-piece clamp 1001 and a tapered sleeve 1002 . The two-piece clamp 1001 has an internal thread, and the tapered sleeve 1002 is connected to the outside of the two-piece clamp 1001 to form the rod clamp 10 as a whole.

[0053] like Figure 1As shown, the center circular hole 101 of the pressure plate is installed on the flat ground through the light power feeler rod 15, which plays a vertical supporting role for the entire lifting device. The first step is to first install the fixed through-core hydraulic jack 2 on the pressure plate, and align the center circular hole 201 of the through-core hydraulic jack with the center circular hole 101 of the pressure plate 1. Then the connecting rod 7 passes through the center circular hole 201 of the through-core hydraulic jack and the center circular hole 101 of the pressure plate 1 to connect with the light power feeler rod. The through-core cone 8 passes through the connecting rod 7 and is placed on the top surface of the jack. The nut 9 or the rod clamp 10 is used to make the through-core cone and the hydraulic jack plunger reliably contact. The second step is to install the angle steel fixed support 3 and the vertical fixed support assembly 4 to fix the hydraulic jack on the pressure plate. When installing the vertical fixed support assembly 4, the center hole of the upper and lower rod connection thread 403 is aligned with the hydraulic jack, and then the screw fixing support 5 is tightened to fix the hydraulic jack. The third step is to install the horizontal fixed support assembly 6. After adjusting the distance between the top of the connecting rod 7 and the jack plunger limit plate to be no greater than the maximum lifting distance of the jack plunger, fix the horizontal fixing bracket. Step 4: Connect the hydraulic pump 14. Start the hydraulic pump to lift the hydraulic jack and pull the light power sounding rod upward from the soil.

[0054] The above is a specific implementation of the utility model. From the implementation process, it can be seen that the utility model provides a detachable hydraulic pulling device for a light dynamic probe, which is conducive to the pulling of the light dynamic probe. In addition, by adjusting the bottom angle steel fixed support and combining it with different types of through-hole hydraulic jacks, it can realize the pulling of drill rods of other different diameters or the application of pre-tightening force for anti-floating anchor rods. The device has strong applicability and is reliable to use.

Claims

1. A detachable hydraulic extraction device for a light dynamic probe, characterized in that: The invention comprises a pressure plate (1), a through-hole hydraulic jack (2), a connecting rod (7) and a through-hole cone (8); the through-hole hydraulic jack (2) is detachably fixedly mounted at the top center position of the pressure plate (1); the connecting rod (7) passes through a hydraulic jack through-hole (201) of the through-hole hydraulic jack (2) and is fixedly connected at its lower end to the top of a light power probe rod (15); a through-hole cone (8) is arranged at the top of a hydraulic jack active plunger (202) of the through-hole hydraulic jack (2); and the upper end of the connecting rod (7) passes through the through-hole cone (8) and presses the through-hole cone (8) against the top of the hydraulic jack active plunger (202).

2. A detachable hydraulic extraction device for a light dynamic penetration instrument according to claim 1, characterized in that: The upper end of the connecting rod (7) is threadedly connected to a nut (9), and the nut (9) presses the through-cone (8) against the top of the movable plunger (202) of the hydraulic jack.

3. A detachable hydraulic extraction device for a light dynamic penetration instrument according to claim 1, characterized in that: The through-hole hydraulic jack (2) is connected to the hydraulic pump (14) via a hydraulic pump pipe (13).

4. A detachable hydraulic extraction device for a light dynamic probe according to claim 3, characterized in that: The hydraulic pump (14) is a manual hydraulic pump or an electric hydraulic pump.

5. The detachable hydraulic extraction device for a light dynamic penetration instrument according to claim 1, characterized in that: A jack plunger limit plate (601) is arranged directly above the connecting rod (7); the jack plunger limit plate (601) is fixedly arranged directly above the connecting rod (7).

6. A detachable hydraulic extraction device for a light dynamic penetration instrument according to claim 1, characterized in that: The bottom of the through-core hydraulic jack (2) is fixedly mounted on the pressure plate (1) via an angle steel fixed support assembly (3); the angle steel fixed support assembly (3) comprises an angle steel body and an angle steel fixed support assembly rubber gasket (301); the horizontal plate of the angle steel body is detachably fixedly mounted on the pressure plate (1); the vertical plate of the angle steel body is pressed against the outer side of the bottom of the through-core hydraulic jack (2); and the angle steel fixed support assembly rubber gasket (301) is arranged between the vertical plate of the angle steel body and the through-core hydraulic jack (2).

7. A detachable hydraulic extraction device for a light dynamic penetration instrument according to claim 6, characterized in that: A bolt connection hole (302) is provided on the horizontal plate of the angle steel body, and an oblong hole matching the bolt connection hole (302) is provided on the pressure plate (1). The angle steel body is connected to the oblong hole of the pressure plate (1) in an adjustable position by bolt fastening.

8. A detachable hydraulic extraction device for a light dynamic penetration instrument according to claim 6, characterized in that: A vertical fixing bracket assembly (4) is detachably fixedly mounted on the pressure plate (1), and four vertical fixing bracket assemblies (4) are respectively arranged around the through-hole hydraulic jack (2).

9. A detachable hydraulic extraction device for a light dynamic probe according to claim 8, characterized in that: A horizontal fixed support assembly (6) is fixedly installed between the tops of the four vertical fixed support assemblies (4), and a jack plunger limiting plate (601) is fixedly arranged at the bottom of the horizontal fixed support assembly (6).

10. A detachable hydraulic extraction device for a light dynamic penetration instrument according to claim 9, characterized in that: The distance between the top of the connecting rod (7) and the jack plunger limit plate (601) is no greater than the maximum lifting distance of the hydraulic jack movable plunger (202).