Dynamic sounding device for automatically recording hammering number and depth

Abstract

The utility model relates to the technical field of detection tools, and discloses a dynamic sounding device for automatically recording hammering number and depth, which comprises a fixed rod and a drop hammer connected above the surface of the fixed rod in a sliding manner, and further comprises a mounting box fixed at the bottom of the drop hammer, and an electronic display screen is embedded in the front side of the mounting box; a control button is mounted on the front side of the mounting box and located above the electronic display screen, a hammer pad is bonded to the bottom of the mounting box, and a fixed rod penetrates through the mounting box and the hammer pad and is in sliding connection with the mounting box and the hammer pad; the magnetic induction sensor is mounted on the right side of the mounting box; according to the utility model, the automatic counting function is realized, the penetrometer and the sensor are combined into a whole, the hammering number can be automatically recorded after hammering, the operation of a worker is facilitated, the working efficiency and the data accuracy are improved, the worker can know the hammering times in the test through observation, and the labor intensity of the worker is reduced. Workers do not need to carry out manual recording, and convenience is provided for the detection work of the workers.

Description

Technical Field

[0001] The utility model relates to the technical field of detection tools, in particular to a dynamic penetration device that automatically records the number of hammer blows and depth. Background Art

[0002] The main purpose of the dynamic penetration method is to determine the allowable bearing capacity of various types of soil. It can also be used to find out the uniformity of soil layers in the horizontal and vertical directions, determine the location of the bearing layer of the pile foundation, and estimate the bearing capacity of a single pile. This information is crucial for evaluating the stability and safety of the foundation, and helps engineers and designers develop appropriate construction plans to ensure the stability and safety of buildings or other structures on the foundation.

[0003] At present, when testing the bearing capacity of the foundation, the staff needs to use a dynamic probe to hammer the foundation below. However, most of the existing dynamic probes cannot count the number of hammer blows, which results in the staff not only needing to operate the instrument during the test, but also needing to record the number of hammer blows each time. As a result, it is easy to forget which hammer blow to count during the test, resulting in invalid test data and bringing inconvenience to the staff's testing work. Utility Model Content

[0004] The utility model aims to provide a device for automatically recording the number of hammer blows and the depth of a dynamic probe, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a dynamic penetration device for automatically recording the number of hammer blows and depth, comprising a fixed rod and a drop hammer slidably connected above the surface of the fixed rod, and also comprising:

[0006] A mounting box is fixed at the bottom of the drop hammer, an electronic display screen is embedded in the front side of the mounting box, a control button is installed on the front side of the mounting box and above the electronic display screen, a hammer pad is bonded to the bottom of the mounting box, and a fixed rod passes through the mounting box and the hammer pad and is slidably connected to the mounting box and the hammer pad;

[0007] A magnetic induction sensor is installed on the right side of the installation box, a magnet sheet is fixed on the right side of the bottom of the drop hammer, and lifting rods are fixed on both the left and right sides of the drop hammer.

[0008] Preferably, the magnetic induction sensor is electrically connected to the electronic display screen, and the control button is used in conjunction with the electronic display screen, and the positions of the magnet sheet and the magnetic induction sensor correspond.

[0009] Preferably, a protective plate is fixed on the front side of the installation box and below the electronic display screen, and the protective plate is arranged to be inclined as a whole.

[0010] Preferably, an auxiliary lifting rod is fixed to the top of the lifting rod, and the height of the top of the auxiliary lifting rod is higher than the height of the top of the drop hammer.

[0011] Preferably, a fixing plate is fixed above the surface of the fixed rod, and sliding grooves are opened on the left and right sides of the fixing plate, the interior of the sliding groove is slidably connected with a positioning frame, and the auxiliary lifting rod is slidably connected to the inner wall of the positioning frame, and springs are fixed to the surface of the inner wall of the fixing plate facing the positioning frame.

[0012] Preferably, both front and rear sides of the inner wall of the slide groove are provided with limiting grooves, and both front and rear sides of the positioning frame are fixed with limiting blocks slidably connected to the inner wall of the limiting groove.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] The utility model has an automatic counting function, which combines the probe and the sensor into one. After the hammering, the number of hammering can be automatically recorded, which is convenient for the staff to operate and improves the work efficiency and data accuracy. The staff can know how many hammerings have been carried out in this test by observation, and there is no need for the staff to record manually, which provides convenience for the staff's detection work. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 It is a three-dimensional structural schematic diagram of another viewing angle of the utility model;

[0017] Figure 3 It is a three-dimensional schematic diagram of the drop hammer in the utility model;

[0018] Figure 4 It is a cross-sectional view of the fixing plate in the present utility model.

[0019] In the figure: 1. fixed rod; 2. drop hammer; 3. installation box; 4. electronic display screen; 5. control button; 6. hammer pad; 7. magnetic induction sensor; 8. magnet sheet; 9. lifting rod; 10. auxiliary lifting rod; 11. fixing plate; 12. slide groove; 13. positioning frame; 14. spring; 15. limit groove; 16. limit block; 17. protective plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4 As shown, a dynamic probing device for automatically recording the number of hammer blows and depth includes a fixed rod 1, a drop hammer 2 is slidably connected to the upper surface of the fixed rod 1, a mounting box 3 is fixed to the bottom of the drop hammer 2, an electronic display screen 4 is embedded on the front side of the mounting box 3, a control button 5 is installed on the front side of the mounting box 3 and above the electronic display screen 4, a hammer pad 6 is bonded to the bottom of the mounting box 3, and the fixed rod 1 passes through the mounting box 3 and the hammer pad 6 and is slidably connected to the mounting box 3 and the hammer pad 6, a magnetic induction sensor 7 is installed on the right side of the mounting box 3, a magnet sheet 8 is fixed to the right side of the bottom of the drop hammer 2, and lifting rods 9 are fixed on both the left and right sides of the drop hammer 2.

[0022] The magnetic induction sensor 7 is electrically connected to the electronic display screen 4, and the control button 5 is used in conjunction with the electronic display screen 4. The position of the magnet sheet 8 corresponds to that of the magnetic induction sensor 7. When the magnetic induction sensor 7 is close to the magnet sheet 8, the magnetic induction sensor 7 can transmit an electrical signal to the electronic display screen 4, and the electronic display screen 4 will display the number of times, and then perform a counting operation. The control button 5 above can clear the data on the electronic display screen 4 or turn the electronic display screen 4 off or on.

[0023] A protective plate 17 is fixed on the front side of the installation box 3 and below the electronic display screen 4, and the protective plate 17 is tilted as a whole. When the drop hammer 2 falls, the protective plate 17 can block the flying soil and protect the surface of the electronic display screen 4.

[0024] An auxiliary lifting rod 10 is fixed to the top of the lifting rod 9, and the height of the top of the auxiliary lifting rod 10 is higher than the height of the top of the drop hammer 2. When the drop hammer 2 falls, when the staff moves the drop hammer 2 to the corresponding height again, the lifting rod 9 is located at a low position, which makes it troublesome for the staff to pull the lifting rod 9 to move the drop hammer 2 as a whole. The staff can move the drop hammer 2 by pulling the auxiliary lifting rod 10 above.

[0025] A fixing plate 11 is fixed above the surface of the fixed rod 1, and a slide groove 12 is provided on the left and right sides of the fixing plate 11, and a positioning frame 13 is slidably connected inside the slide groove 12, and the auxiliary lifting rod 10 is slidably connected to the inner wall of the positioning frame 13, and a spring 14 is fixed to the surface of the inner wall of the fixing plate 11 on the side facing the positioning frame 13. Limiting grooves 15 are provided on the front and rear sides of the inner wall of the slide groove 12, and a limiting block 16 is fixed on one side of the front and rear of the positioning frame 13, and the limiting block 16 is located inside the limiting groove 15 and slidably connected to the inner wall of the limiting groove 15. When the device is not in use, the staff can push the drop hammer 2 to move up, and then the staff pulls the positioning frames 13 on both sides to make the positioning frames 13 move toward the inside of the slide groove 12. When the height of the auxiliary lifting rod 10 is higher than the height of the positioning frame 13, the staff releases the positioning frame 13, and then the positioning frame 13 is pushed out by the spring 14, and the auxiliary lifting rod 10 is positioned by the positioning frame 13, thereby fixing the height of the entire drop hammer 2.

[0026] Working principle: When the staff needs to test the bearing capacity of the foundation, the staff moves the device to the testing position and pulls the positioning frames 13 on both sides so that the positioning frames 13 stop fixing the auxiliary lifting rod 10. Then the staff pushes the drop hammer 2 to make the drop hammer 2 drop to a certain height. Then the staff can turn on the electronic display screen 4 and the magnetic induction sensor 7 on one side. After the magnetic induction sensor 7 is turned on, the staff can release the drop hammer 2, thereby making the drop hammer 2 fall. When the hammer pad 6 falls to the bottom, the distance between the magnet sheet 8 and the magnetic induction sensor 7 is close to 0-20mm. Then the staff pulls the auxiliary lifting rod 10 to lift the drop hammer 2. After the distance between the magnetic induction sensor 7 and the magnet sheet 8 exceeds 30mm, the technology is completed once. The electronic display screen 4 will display the number of times. After repeating the above operation to hammer the foundation detection point a certain number of times, the staff can move the device out and determine the foundation bearing capacity according to the comparison table of the average number of hammer blows of the soil layer.

[0027] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dynamic penetration device for automatically recording the number of hammer blows and depth, comprising a fixed rod (1) and a drop hammer (2) slidably connected above the surface of the fixed rod (1), characterized in that: Also includes: A mounting box (3) is fixed at the bottom of the drop hammer (2), an electronic display screen (4) is embedded in the front side of the mounting box (3), a control button (5) is installed on the front side of the mounting box (3) and above the electronic display screen (4), a hammer pad (6) is bonded to the bottom of the mounting box (3), and a fixed rod (1) passes through the mounting box (3) and the hammer pad (6) and is slidably connected to the mounting box (3) and the hammer pad (6); A magnetic induction sensor (7) is installed on the right side of the installation box (3), a magnet sheet (8) is fixed on the right side of the bottom of the drop hammer (2), and lifting rods (9) are fixed on both the left and right sides of the drop hammer (2).

2. The device for automatically recording the number of hammer blows and the depth of a dynamic penetration test according to claim 1, characterized in that: The magnetic induction sensor (7) is electrically connected to the electronic display screen (4), and the control button (5) is used in conjunction with the electronic display screen (4). The position of the magnet sheet (8) corresponds to that of the magnetic induction sensor (7).

3. The device for automatically recording the number of hammer blows and the depth of a dynamic penetration test according to claim 1, characterized in that: A protective plate (17) is fixed on the front side of the installation box (3) and below the electronic display screen (4), and the protective plate (17) is arranged in an inclined manner as a whole.

4. The device for automatically recording the number of hammer blows and depth of dynamic penetration according to claim 1, characterized in that: An auxiliary lifting rod (10) is fixed to the top of the lifting rod (9), and the height of the top of the auxiliary lifting rod (10) is higher than the height of the top of the drop weight (2).

5. The device for automatically recording the number of hammer blows and depth of dynamic penetration according to claim 4, characterized in that: A fixing plate (11) is fixed above the surface of the fixed rod (1), and a slide groove (12) is provided on both the left and right sides of the fixing plate (11), a positioning frame (13) is slidably connected inside the slide groove (12), and the auxiliary lifting rod (10) is slidably connected to the inner wall of the positioning frame (13), and a spring (14) is fixed to the surface of the inner wall of the fixing plate (11) facing the positioning frame (13).

6. The device for automatically recording the number of hammer blows and the depth of a dynamic penetration test according to claim 5, characterized in that: Limiting grooves (15) are provided on both the front and rear sides of the inner wall of the slide groove (12), and limiting blocks (16) are fixed on both the front and rear sides of the positioning frame (13) and are slidably connected to the inner wall of the limiting groove (15).

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