CN219343122U

CN219343122U - Standard penetration tester

Info

Publication number: CN219343122U
Application number: CN202320529385.5U
Authority: CN
Inventors: 戴海建; 陶钟; 张梦飏
Original assignee: Nanjing Survey Engineering Co ltd
Current assignee: Nanjing Survey Engineering Co ltd
Priority date: 2023-03-17
Filing date: 2023-03-17
Publication date: 2023-07-14
Anticipated expiration: 2033-03-17

Abstract

The utility model discloses a standard penetration tester, which comprises a guide rod, a support frame and an automatic drop hammer mechanism, wherein the guide rod is arranged on the support frame; guide rod: the outer cambered surface is vertically and slidably connected with a penetrating hammer, the lower end of the outer cambered surface of the guide rod is provided with a hammer pad, the lower end of the guide rod is in threaded connection with a feeler lever, and the lower end of the feeler lever is in threaded connection with an injector; a supporting frame: the outer cambered surface is connected with the feeler lever in a sliding way; automatic drop hammer mechanism: the device comprises a U-shaped frame, a contact sensor and an electromagnetic chuck, wherein the U-shaped frame is vertically connected to the outer cambered surface of a guide rod in a sliding manner, the electromagnetic chuck is arranged in a mounting groove on the lower surface of the U-shaped frame, and the contact sensor is arranged at the lower end of the U-shaped frame; according to the standard penetration tester, the standard penetration test through hammer is automatically dropped, the building position of the standard penetration test support frame can be rapidly and accurately determined, the steps required by building the standard penetration test support frame are reduced, and the building efficiency of standard penetration test equipment is improved.

Description

Standard penetration tester

Technical Field

The utility model relates to the technical field of standard penetration test, in particular to a standard penetration tester.

Background

The standard penetration tester is mainly used for carrying out effective penetration test in deeper stratum, the working principle is that a certain hammering kinetic energy is utilized to drive a standard-specification injector into a soil layer at the bottom of a drill hole to a preset depth, and the change of the soil layer and the physical and mechanical properties of the soil are evaluated according to the penetration resistance in the driven soil layer, so that the standard penetration tester has wide application range, covers various soil layers such as clay, sandy soil, crushed stone soil and the like, and has the advantages of quick and economical test method and capability of continuously testing the soil layer; in the prior art, the standard penetration tester mainly comprises an injector, a touch probe rod, a hammer pad, a guide rod, a penetrating hammer, an automatic drop hammer device and the like, wherein a support frame is required to be built in the use process of the automatic drop hammer device, support is provided for the automatic drop hammer device, stability of drop hammers is guaranteed, the common support frame is built in a manner of splicing steel pipes, the construction process is complicated in steps, the position of the support frame is required to be adjusted according to the position of standard penetration test equipment, the time is long, and the efficiency of standard penetration test is influenced.

Disclosure of Invention

The utility model aims to overcome the existing defects, provides the standard penetration tester, can quickly and accurately determine the construction position of the standard penetration test support frame, improves the construction efficiency of standard penetration test equipment, accelerates the speed of the standard penetration test, and can effectively solve the problems in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a standard penetration tester comprises a guide rod, a support frame and an automatic drop hammer mechanism;

guide rod: the outer cambered surface is vertically and slidably connected with a penetrating hammer, the lower end of the outer cambered surface of the guide rod is provided with a hammer pad, the lower end of the guide rod is in threaded connection with a feeler lever, and the lower end of the feeler lever is in threaded connection with an injector;

a supporting frame: the outer cambered surface is connected with the feeler lever in a sliding way;

automatic drop hammer mechanism: the device comprises a U-shaped frame, a contact sensor and an electromagnetic chuck, wherein the U-shaped frame is vertically connected to the outer cambered surface of a guide rod in a sliding manner, the electromagnetic chuck is arranged in a mounting groove on the lower surface of the U-shaped frame, and the contact sensor is arranged at the lower end of the U-shaped frame;

wherein: still include the PLC controller, the PLC controller is located the front side of guide bar, the input electricity of PLC controller is connected in external power source, contact sensor's output electricity is connected in the input of PLC controller, electromagnetic chuck's input electricity is connected in the output of PLC controller, automatic drop hammer to the experimental cross hammer of standard penetration reduces artificial participation, can be quick accurate establish the position to the experimental support frame of standard penetration, reduce the required step of the experimental support frame of standard penetration and build, improve the efficiency of building of the experimental equipment of standard penetration, accelerate the experimental speed of going on of standard penetration.

Further, the support frame includes locating tube and locating plate, locating tube sliding connection is equipped with the locating plate in the extrados of touching the probe rod respectively, and the extrados of locating tube is fixed a position the mounted position of support frame fast.

Further, the support frame also comprises a support column and a connecting disc, wherein the support column is respectively inserted into the insertion tubes at the end heads of the positioning plates, and the upper ends of the support column are fixedly connected with the connecting disc through bolts so as to provide support for standard penetration test equipment.

Further, the automatic drop hammer mechanism further comprises a winch and a guide wheel, the guide wheels are respectively arranged on the upper surface of the connecting disc, the winch is located on the front side of the guide rod, and a steel wire rope of the winch respectively penetrates through the upper end of a groove of the outer cambered surface of the guide wheel and a through hole on the surface of the connecting disc and is fixedly connected with the U-shaped frame to provide power for movement of the U-shaped frame.

Further, buried inserted columns are arranged at the lower ends of the support columns, and support stability of the support columns is improved.

Further, the ball is connected in the rotating groove of the inner cambered surface of the positioning tube in a rotating way, and the ball is contacted with the outer cambered surface of the feeler lever, so that the friction force between the positioning tube and the feeler lever is reduced.

Further, the upper end threaded connection of guide bar has the spacing ring, carries out the restriction to the range of movement of cross hammer and U type frame.

Compared with the prior art, the utility model has the beneficial effects that: the standard penetration tester has the following advantages:

when the standard penetration test is carried out on the ground, the penetrating device and the feeler lever are inserted into the pre-drilled holes, the positioning tube is also inserted into the holes, the mounting position of the supporting frame is positioned, then the positioning plate is contacted with the ground, the supporting columns penetrate through the insertion tubes of the ends of the positioning plate, the buried inserting columns are inserted into the ground, the positions among the lower ends of the three supporting columns are determined, the upper ends of the three supporting columns are connected through the connecting disc, the positions of the three supporting columns are determined, the mounting of the supporting frame is rapidly completed, the winch is started through the PLC controller to pull the U-shaped frame to move up and down, after the contact sensor is contacted with the penetrating hammer, the electromagnetic chuck is started to absorb the penetrating hammer, the penetrating hammer moves upwards along with the U-shaped frame, after the penetrating hammer is lifted to a certain height, the electromagnetic chuck is closed, the penetrating hammer freely falls down, the hammer pad is knocked to a preset depth, the positions of the penetrating hammer pad are determined according to the frequency of the hammer pad, the change of the soil layer and the physical property of soil are determined, the standard penetration hammer is automatically built, the manual construction is reduced, the standard penetration hammer is participated in the standard penetration test is carried out, the standard penetration test is accurately carried out, the standard penetration test is carried out, and the standard penetration test is required to be carried out, and the standard penetration test is rapidly and standard penetration test is accelerated.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the exploded construction of the integral device portion of the present utility model;

FIG. 3 is a schematic side sectional view of the automatic drop hammer mechanism of the present utility model;

fig. 4 is a schematic diagram of a front cross-section of a positioning tube according to the present utility model.

In the figure: the device comprises a guide rod 1, a through hammer 2, a hammer pad 3, a limiting ring 4, a touch probe 5, a penetrometer 6, a supporting frame 7, a positioning tube 71, a positioning plate 72, a supporting column 73, a connecting disc 74, an automatic drop hammer mechanism 8, a winch 81, a guide wheel 82, a U-shaped frame 83, a contact sensor 84, an electromagnetic chuck 85, a PLC 9, a buried inserting column 10 and a ball 11.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present embodiment provides a technical solution: a standard penetration tester comprises a guide rod 1, a support frame 7 and an automatic drop hammer mechanism 8;

guide bar 1: the outer cambered surface of the guide rod is vertically and slidably connected with a punching hammer 2, the lower end of the outer cambered surface of the guide rod 1 is provided with a hammer pad 3, the punching hammer 2 is used for punching the hammer pad 3 to provide power for the detection part to penetrate the ground, the lower end of the guide rod 1 is in threaded connection with a feeler lever 5 for conducting hammering kinetic energy, the lower end of the feeler lever 5 is in threaded connection with an injector 6 for penetrating into the soil layer by using the hammering kinetic energy, the upper end of the guide rod 1 is in threaded connection with a limiting ring 4 for limiting the moving range of the punching hammer 2;

support frame 7: the support frame 7 comprises a positioning pipe 71 and a positioning plate 72, the positioning pipe 71 is connected to the outer cambered surface of the feeler lever 5 in a sliding manner, the positioning plate 72 is arranged on the outer cambered surface of the positioning pipe 71 respectively, the support frame 7 also comprises a support column 73 and a connecting disc 74, the support column 73 is respectively inserted into an insertion pipe at the end of the positioning plate 72, the upper ends of the support column 73 are fixedly connected with the connecting disc 74 through bolts, after the feeler lever 5 is inserted into a pre-drilled hole, the positioning pipe 71 is also inserted into the hole, the installation position of the support frame 7 is positioned, then the positioning plate 72 is contacted with the ground, the support column 73 passes through the insertion pipe at the end of the positioning plate 72 and enables the buried insertion column 10 to be inserted into the ground, the positions between the lower ends of the three support columns 73 are determined, then the positions of the three support columns 73 are determined through the connecting disc 74, the installation of the support column 7 is rapidly completed, the buried insertion columns 10 are arranged at the lower ends of the support column 73, the support groove of the inner cambered surface of the positioning pipe 71 is also inserted into the hole, the rolling groove is rotationally connected with the balls 11, and the friction force between the rolling balls 11 and the feeler lever 5 is reduced, and the friction between the rolling balls 11 and the inner cambered surface of the feeler lever 5 is reduced;

automatic drop hammer mechanism 8: the automatic drop hammer mechanism comprises a U-shaped frame 83, a contact sensor 84 and an electromagnetic chuck 85, wherein the U-shaped frame 83 is vertically and slidably connected to the outer cambered surface of a guide rod 1, the electromagnetic chuck 85 is arranged in a mounting groove on the lower surface of the U-shaped frame 83, the contact sensor 84 is arranged at the lower end of the U-shaped frame 83, the automatic drop hammer mechanism 8 further comprises a winch 81 and a guide wheel 82, the guide wheel 82 is respectively arranged on the upper surface of a connecting disc 74, the winch 81 is positioned on the front side of the guide rod 1, a steel wire rope of the winch 81 respectively penetrates through the upper end of a groove of the outer cambered surface of the guide wheel 82 and a through hole on the surface of the connecting disc 74 and is fixedly connected with the U-shaped frame 83, the winch 81 is started, the steel wire rope of the winch 81 pulls the U-shaped frame 83 to move upwards under the guide of the guide wheel 82, after the electromagnetic chuck 85 is contacted with the core through hammer 2, the detection end of the contact sensor 84 is contacted with the core through hammer 2, the contact sensor 84 sends a working signal, the core through hammer 2 is adsorbed by the contact sensor 84, the core through hammer 2 moves upwards along with the U-shaped frame 83, after the core through hammer 85 is lifted to a certain height, the core through 2 is stopped, and the core through 2 is freely dropped under the guide rod 2;

wherein: still include PLC controller 9, PLC controller 9 is located the front side of guide bar 1, and the input of PLC controller 9 is connected in external power source electricity, and the output of contact sensor 84 is connected in the input of PLC controller 9 electricity, and the input of electromagnetic chuck 85 is connected in the output of PLC controller 9 electricity, controls the start and stop of whole device.

The working principle of the standard penetration tester provided by the utility model is as follows: when the standard penetration test is carried out on the ground, the penetrating device 6 and the feeler lever 5 are inserted into the pre-drilled holes, the positioning pipe 71 is also inserted into the holes along with the holes, the installation position of the supporting frame 7 is positioned, then the positioning plate 72 is contacted with the ground, the supporting columns 73 penetrate through the insertion pipes of the ends of the positioning plate 72, the buried inserting columns 10 are inserted into the ground, the positions among the lower ends of the three supporting columns 73 are determined, then the upper ends of the three supporting columns 73 are connected through the connecting plates 74, the positions of the three supporting columns 73 are determined, the installation of the supporting frame 7 is completed quickly, then the steel wire rope end of the winding machine 81 is connected with the U-shaped frame 83, the winding machine 81 is started through the PLC controller 9, the steel wire rope of the winding machine 81 pulls the U-shaped frame 83 to move upwards under the guidance of the guide wheel 82, after the electromagnetic chuck 85 is contacted with the penetrating hammer 2, the detection end of the contact sensor 84 is contacted with the penetrating hammer 2, the electromagnetic chuck 85 is started, the penetrating hammer 2 is adsorbed by the electromagnetic chuck, the penetrating hammer 83 moves up, the penetrating hammer 2 is enabled to move along with the upper end of the U-shaped frame 83, the position of the penetrating hammer 3 is reached, the position of the penetrating hammer is determined, the position of the penetrating hammer 3 is stopped, the impact pad is lifted down, the impact pad is freely, the impact pad is stopped, and the impact pad is lifted to the soil is freely, and the impact pad is lowered, and the impact pad is subjected to the impact on the soil, and the impact is subjected to the impact.

It should be noted that, the PLC controller 9 disclosed in the above embodiment may be a PLC controller of TPC8-8TD, the contact sensor 84, the electromagnetic chuck 85 and the winding engine 81 may be freely configured according to the actual application scenario, the contact sensor 84 may be a contact sensor of M109-RM type, the electromagnetic chuck 85 may be an electromagnetic chuck of 800 x 1600 type, the winding engine 81 may be a winding engine of JK1 type, and the PLC controller 9 controls the operations of the contact sensor 84, the electromagnetic chuck 85 and the winding engine 81 all by methods commonly used in the prior art.

The foregoing is only illustrative of the present utility model and is not to be construed as limiting the scope of the utility model, and all equivalent structures or equivalent flow modifications which may be made by the teachings of the present utility model and the accompanying drawings or which may be directly or indirectly employed in other related art are within the scope of the utility model.

Claims

1. A standard penetration tester, characterized by: comprises a guide rod (1), a support frame (7) and an automatic drop hammer mechanism (8);

guide bar (1): the outer cambered surface of the guide rod is vertically and slidably connected with a penetrating hammer (2), the lower end of the outer cambered surface of the guide rod (1) is provided with a hammer pad (3), the lower end of the guide rod (1) is in threaded connection with a feeler lever (5), and the lower end of the feeler lever (5) is in threaded connection with an injector (6);

support frame (7): the outer arc surface is connected with the feeler lever (5) in a sliding way;

automatic drop hammer mechanism (8): the device comprises a U-shaped frame (83), a contact sensor (84) and an electromagnetic chuck (85), wherein the U-shaped frame (83) is vertically and slidably connected to the outer arc surface of a guide rod (1), the electromagnetic chuck (85) is arranged in a mounting groove on the lower surface of the U-shaped frame (83), and the contact sensor (84) is arranged at the lower end of the U-shaped frame (83);

wherein: still include PLC controller (9), PLC controller (9) are located the front side of guide bar (1), and the input electricity of PLC controller (9) is connected in external power source, and the output electricity of touch sensor (84) is connected in the input of PLC controller (9), and the output of PLC controller (9) is connected to the input electricity of electromagnetic chuck (85).

2. A standard penetration tester according to claim 1, wherein: the support frame (7) comprises a positioning pipe (71) and a positioning plate (72), wherein the positioning pipe (71) is connected to the outer cambered surface of the feeler lever (5) in a sliding mode, and the outer cambered surface of the positioning pipe (71) is provided with the positioning plate (72) respectively.

3. A standard penetration tester according to claim 2, wherein: the support frame (7) further comprises support columns (73) and connecting discs (74), the support columns (73) are respectively inserted into insertion tubes at the ends of the positioning plates (72), and the upper ends of the support columns (73) are fixedly connected with the connecting discs (74) through bolts.

4. A standard penetration tester according to claim 3, wherein: the automatic drop hammer mechanism (8) further comprises a winch (81) and a guide wheel (82), the guide wheel (82) is respectively arranged on the upper surface of the connecting disc (74), the winch (81) is located on the front side of the guide rod (1), and a steel wire rope of the winch (81) respectively penetrates through the upper end of a groove of the outer cambered surface of the guide wheel (82) and a through hole on the surface of the connecting disc (74) and is fixedly connected with the U-shaped frame (83).

5. A standard penetration tester according to claim 3, wherein: the lower ends of the support columns (73) are respectively provided with a buried inserted column (10).

6. A standard penetration tester according to claim 2, wherein: the rotary grooves of the inner cambered surfaces of the positioning pipes (71) are respectively and rotatably connected with a ball (11), and the balls (11) are respectively contacted with the outer cambered surfaces of the feeler levers (5).

7. A standard penetration tester according to claim 1, wherein: the upper end of the guide rod (1) is connected with a limiting ring (4) in a threaded manner.