Light dynamic penetrometer

Abstract

The utility model provides a light dynamic penetrometer. The light dynamic penetrometer comprises a sounding rod, a clamping hammer pad, a sliding rod and a piercing hammer. One end of the sounding rod is connected with a drill bit. The clamping hammer pad is provided with a through insertion hole allowing the other end of the feeler lever to be inserted therein, and the clamping hammer pad is detachably connected with the feeler lever. And one end of the sliding rod is inserted into the through insertion hole and is in threaded connection with the other end of the penetration rod. The piercing hammer is arranged on the sliding rod in a sliding mode. According to the light dynamic penetrometer provided by the utility model, the arranged clamping hammer pad is provided with the through insertion hole, so that a limiting space can be provided for the butt joint of the sounding rod and the sliding rod, the connecting part of the sounding rod and the sliding rod is prevented from being deformed and damaged, and the practicability is high. Besides, the clamping hammer pad is detachably connected with the penetration rod, so that the impact force of the piercing hammer can be ensured to directly act on the penetration rod through the clamping hammer pad, meanwhile, the penetration rod can be conveniently replaced or increased through the structure, and a dynamic penetration test is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of dynamic probe rods, and in particular relates to a light dynamic probe instrument. Background Art

[0002] The dynamic penetration test is an in-situ testing method that uses a hammer force of a specific specification to penetrate the corresponding penetration rod together with the pointed cone probe at the lower end of the penetration rod into the soil, and comprehensively evaluates the engineering properties of the site based on the penetration depth of the penetration rod and the number of hammer blows. Up to now, the dynamic penetration test has been widely used in various fields of geotechnical engineering, such as the division of soil layers of foundation soil, qualitative evaluation of the uniformity and physical properties of foundation soil, determination of the location of soil holes, sliding surfaces, and interfaces between soft and hard soil layers, and can further obtain the strength and deformation parameters of the foundation soil and the bearing capacity of the natural foundation and the bearing capacity of a single pile. In addition, the dynamic penetration test also has the advantages of simple operation, easy to carry equipment and low price, and has important utilization value or guiding significance in various stages of geotechnical engineering survey, design, construction, etc.

[0003] In the prior art, the lower feeler rod and the hammer pad on its top, as well as the hammer pad and the sliding rod on its top are all threadedly connected. During use, the hammer pad is impacted by the piercing hammer, and the threaded connection structure is prone to deformation, which makes it impossible to disassemble and directly scrapped. Utility Model Content

[0004] The embodiment of the utility model provides a light dynamic probe, aiming to solve the problem of poor practicality of the existing dynamic probe due to easy damage.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a light dynamic probe, including:

[0006] A probe rod; one end of which is connected with a drill bit;

[0007] A clamping hammer pad has a through hole for inserting the other end of the feeler rod, and the clamping hammer pad is detachably connected to the feeler rod;

[0008] A sliding rod, one end of which is inserted into the through hole and is threadedly connected to the other end of the feeler rod;

[0009] The core hammer is slidably arranged on the slide rod.

[0010] In a possible implementation, a stud is provided at one end of the feeler rod away from the drill bit, and a threaded hole for threaded connection of the stud is provided on the corresponding sliding rod.

[0011] In a possible implementation manner, the drill bit is threadedly connected to the feeler rod.

[0012] In a possible implementation, the clamped hammer pad includes:

[0013] A sleeve, the lumen of the sleeve being the through hole; the sleeve having a sliding space connected to the through hole;

[0014] There are at least two clamping parts, which are arranged in a ring-shaped manner around the axis of the through hole, and each of the clamping parts is arranged in the sliding space, and each of the clamping parts has a clamping part that can be extended into the through hole; the clamping part is used to correspond to the annular groove arranged on the probe rod.

[0015] In a possible implementation, each of the card-mounted components includes:

[0016] A slider is arranged in the sliding space to slide along the radial direction of the through hole, and one end of the slider close to the through hole is the clamping portion;

[0017] A pull rod, one end of which is connected to the slider, and the other end of which passes through the sleeve along the radial direction of the through hole and extends out;

[0018] An elastic member is arranged in the sliding space, one end of the elastic member abuts against the slider, and the other end abuts against the inner wall of the sliding space, and is used to continuously bounce the slider so that the slider has a tendency to move toward the through hole.

[0019] In a possible implementation, an arc-shaped notch adapted to the annular groove is provided at one end of the sliding block close to the through hole.

[0020] In a possible implementation, the lightweight dynamic probe further includes a limiter, and the limiter is detachably connected to an end of the sliding rod away from the probe rod.

[0021] In a possible implementation, the core piercing hammer has a through sliding hole for the sliding rod to pass through, and a hand-operated lever is provided on the core piercing hammer.

[0022] In this implementation, the through-hole provided by the clamping hammer pad can be used for the butt ends of the feeler rod and the slide bar to be inserted, and then after the feeler rod and the slide bar are connected, the through-hole provides a limited space for the butt joint of the feeler rod and the slide bar, avoiding deformation and damage of the connecting part of the two, and having strong practicality. In addition, the clamping hammer pad and the feeler rod are detachably connected, which can ensure that the impact force of the through hammer acts directly on the feeler rod through the clamping hammer pad. At the same time, this structure can also facilitate the replacement or addition of the feeler rod, which is convenient for dynamic sounding test. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1A schematic diagram of the structure of a lightweight dynamic penetration instrument provided by an embodiment of the utility model;

[0024] Figure 2 A schematic diagram of the main structure of a lightweight dynamic penetration instrument provided by an embodiment of the utility model;

[0025] Figure 3 for Figure 2 An enlarged cross-sectional structural diagram of the light dynamic penetration instrument provided in the embodiment at point A;

[0026] Figure 4 for Figure 3 A schematic diagram of the BB-direction cross-sectional structure of the lightweight dynamic penetration instrument provided in the embodiment;

[0027] Description of reference numerals:

[0028] 10. Feeling rod; 11. Drill bit; 12. Stud; 20. Snap-on hammer pad; 21. Casing; 211. Through hole; 22. Snap-on piece; 221. Sliding block; 222. Pull rod; 223. Spring; 224. Arc notch; 30. Sliding rod; 40. Core hammer; 41. Hand lever; 50. Limit piece. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0030] Please also read Figure 1 and Figure 2 Now, the light dynamic feeler provided by the utility model is described. The light dynamic feeler comprises a feeler rod 10, a clamping hammer pad 20, a slide bar 30 and a core hammer 40. A drill bit 11 is connected to one end of the feeler rod 10. The clamping hammer pad 20 has a through socket 211 for inserting the other end of the feeler rod 10, and the clamping hammer pad 20 is detachably connected to the feeler rod 10. One end of the slide bar 30 is inserted into the through socket 211 and is threadedly connected to the other end of the feeler rod 10. The core hammer 40 is slidably arranged on the slide bar 30.

[0031] Compared with the prior art, the light dynamic probe instrument provided in this embodiment has a through hole 211 provided by the clamping hammer pad 20 for the butt ends of the probe rod 10 and the slide bar 30 to be inserted, and then after the probe rod 10 and the slide bar 30 are connected, the through hole 211 provides a limited space for the butt joint of the probe rod 10 and the slide bar 30, avoiding deformation and damage of the connecting part of the two, and having strong practicality. In addition, the clamping hammer pad 20 and the probe rod 10 are detachably connected, which can ensure that the impact force of the core hammer 40 acts directly on the probe rod 10 through the clamping hammer pad 20, and at the same time, this structure can also facilitate the replacement or addition of the probe rod 10, which is convenient for dynamic probe testing.

[0032] In some embodiments, the above-mentioned feeler rod 10 can be used as follows Figure 3 See the structure shown. Figure 3 A stud 12 is provided at one end of the feeler rod 10 away from the drill bit 11, and a threaded hole for threaded connection of the stud 12 is provided on the corresponding sliding rod 30.

[0033] The feeler rod 10 and the slide rod 30 are connected by threads, and this connection structure is simple and easy to assemble and disassemble.

[0034] For ease of understanding, the clamping hammer pad 20 can be first clamped and connected to the probe rod 10, and then the probe rod 10 can be threadedly connected to the slide rod 30. The through socket 211 on the clamping hammer pad 20 directly corresponds to the contact between the probe rod 10 and the slide rod 30, that is, the probe rod 10 and the slide rod 30 are both extended into the through sliding hole. In this way, the joint between the probe rod 10 and the slide rod 30 can be reinforced on the outside of the probe rod 10 and the slide rod 30 to avoid deformation of the direct stud 12 between the two due to uneven force on the probe rod 10.

[0035] In some embodiments, the above-mentioned feeler rod 10 can be used as follows Figure 1 See the structure shown. Figure 1 The drill bit 11 is threadedly connected to the feeler rod 10. This structure can ensure the replacement of the feeler rod 10 and facilitate the replacement of the drill bit 11, or facilitate the random combination of drill bits 11 of different specifications and feeler rods 10 of different specifications.

[0036] In some embodiments, the above-mentioned clamping hammer pad 20 can be used as follows Figure 3 and Figure 4 See the structure shown. Figure 3 and Figure 4The clamping hammer pad 20 includes a sleeve 21 and a clamping member 22. The tube cavity of the sleeve 21 is a through hole 211. The sleeve 21 has a sliding space connected to the through hole 211. There are at least two clamping members 22, and the two clamping members 22 are arranged in an annular interval around the axis of the through hole 211, and each clamping member 22 is arranged in the sliding space, and each clamping member 22 has a clamping portion that can be extended into the through hole 211. The clamping portion can correspond to the annular groove arranged on the feeler rod 10.

[0037] The clamping hammer pad 20 is limitedly clamped with the annular groove on the feeler rod 10 through the clamping piece 22, which can ensure that the impact force acting on the clamping hammer pad 20 is directly transmitted to the feeler rod 10, which is convenient for the feeler test and also convenient for the disassembly and assembly of the clamping hammer pad 20 and the feeler rod 10. In addition, the annular groove is also located in the through-hole 211, which ensures that the position is limitedly protected and deformation of the annular groove can be avoided.

[0038] It should be noted that the annular groove on the feeler rod 10 may be close to one end of the feeler rod 10 and have a certain distance from the stud 12. In addition, the structure of each feeler rod 10 is the same, which can ensure that the feeler rod 10 is supplemented as the depth increases.

[0039] Regarding the opening of the annular groove, in order to prevent the soil and other debris from entering the annular groove after it extends into the ground, two semi-annular magnets can be arranged, and the two semi-annular magnets can be matched and embedded in the annular groove.

[0040] In some embodiments, the above-mentioned clamping member 22 can be used as follows Figure 4 See the structure shown. Figure 4 Each clamping member 22 includes a slider 221, a pull rod 222 and an elastic member. The slider 221 is arranged in the sliding space to slide along the radial direction of the through-hole 211, and one end of the slider 221 close to the through-hole 211 is a clamping portion. One end of the pull rod 222 is connected to the slider 221, and the other end passes through the sleeve 21 and extends out along the radial direction of the through-hole 211. The elastic member is arranged in the sliding space, one end of the elastic member abuts against the slider 221, and the other end abuts against the inner wall of the sliding space, and can continuously bounce the slider 221 so that the slider 221 has a tendency to move toward the through-hole 211.

[0041] In some embodiments, the slider 221 may be configured as follows: Figure 4 See the structure shown. Figure 4 An arc-shaped notch 224 matching the annular groove is provided at one end of the slider 221 close to the through-hole 211 .

[0042] After the slider 221 is clamped in the annular groove, the impact force it receives is mainly exerted on the inner wall of the annular groove through the slider 221 and along the axial direction of the feeler rod 10. At this time, the setting of the arc-shaped notch 224 can increase the contact area between the slider 221 and the annular groove, thereby avoiding stress concentration on the inner wall of the annular groove, ensuring stable transmission of the impact force, and avoiding deformation.

[0043] In some embodiments, see Figure 1 The light dynamic probe also includes a limit member 50, which is detachably connected to an end of the slide bar 30 away from the probe rod 10.

[0044] The limiter 50 can mainly ensure that the stroke of the core hammer 40 can be adjusted easily. For example, the distance between the limiter 50 and the clamping hammer pad 20 is 1m, which can be more convenient for the staff to operate and the accuracy of the data, and also prevent the core hammer 40 from detaching.

[0045] In some embodiments, the punch 40 may be Figure 1 See the structure shown. Figure 1 The core piercing hammer 40 has a through sliding hole for the slide bar 30 to pass through. A hand lever 41 is provided on the core piercing hammer 40. The core piercing hammer 40 mainly ensures stable sliding on the slide bar 30. The hand lever 41 can be convenient for the staff to hold, and a plurality of hand levers 41 can be provided.

[0046] In addition, the end of the core-piercing hammer 40 close to the clamping hammer pad 20 needs to be provided with a flat portion, and correspondingly, the clamping hammer pad 20 is provided with a flat portion corresponding to the core-piercing hammer 40 .

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Lightweight dynamic probe, characterized in that: include: Feeling rod; A drill bit is connected to one end; A clamping hammer pad has a through hole for inserting the other end of the feeler rod, and the clamping hammer pad is detachably connected to the feeler rod; A sliding rod, one end of which is inserted into the through hole and is threadedly connected to the other end of the feeler rod; The core hammer is slidably arranged on the slide rod.

2. The light dynamic probe as claimed in claim 1, characterized in that: A stud is provided at one end of the feeler rod away from the drill bit, and a threaded hole for threaded connection of the stud is provided on the corresponding sliding rod.

3. The light dynamic probe as claimed in claim 2, characterized in that: The drill bit is threadedly connected to the feeler rod.

4. The light dynamic probe as claimed in claim 1, characterized in that: The clamped hammer pad comprises: A sleeve, the lumen of the sleeve being the through hole; the sleeve having a sliding space connected to the through hole; There are at least two clamping parts, which are arranged in a ring-shaped manner around the axis of the through hole, and each of the clamping parts is arranged in the sliding space, and each of the clamping parts has a clamping part that can be extended into the through hole; the clamping part is used to correspond to the annular groove arranged on the probe rod.

5. The light dynamic probe as claimed in claim 4, characterized in that: Each of the card assembly comprises: A slider is arranged in the sliding space to slide along the radial direction of the through hole, and one end of the slider close to the through hole is the clamping portion; A pull rod, one end of which is connected to the slider, and the other end of which passes through the sleeve along the radial direction of the through hole and extends out; An elastic member is arranged in the sliding space, one end of the elastic member abuts against the slider, and the other end abuts against the inner wall of the sliding space, and is used to continuously bounce the slider so that the slider has a tendency to move toward the through hole.

6. The light dynamic probe as claimed in claim 5, characterized in that: An arc-shaped notch matched with the annular groove is provided at one end of the sliding block close to the through-hole.

7. The light dynamic probe as claimed in claim 1, characterized in that: The light dynamic probe also includes a limiter, which is detachably connected to an end of the slide rod away from the probe rod.

8. The light dynamic probe as claimed in claim 1, characterized in that: The core-piercing hammer has a through sliding hole for the sliding rod to pass through, and a hand-operated lever is arranged on the core-piercing hammer.

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