Automatic counter for standard penetration test

Abstract

The utility model discloses an automatic counter for a standard penetration test, and relates to the field of standard penetration tests. The device comprises a supporting frame serving as a carrier. The automatic falling hammer is movably mounted at the top end of the supporting frame and can move in the height direction of the supporting frame. And the locking assembly is sleeved on the outer wall of the automatic falling hammer. And the counter is positioned on the outer wall of the locking assembly. And the display screen is arranged on the support frame and is in electric signal connection with the counter. The beneficial effects of the utility model are that the device is used for recording the connection times of the automatic drop hammer and the standard penetration hammer; therefore, the recording of the hammering times becomes automatic, the requirement of manual recording is reduced, and the efficiency and accuracy of the test are improved. And the counter and the display screen are combined, so that the hammering times can be displayed and monitored in real time, and data can be more conveniently acquired in the test process.

Description

Technical Field

[0001] The utility model relates to the field of standard penetration test, in particular to an automatic counter used for standard penetration test. Background Art

[0002] At present, in geotechnical engineering investigation, standard penetration test is a commonly used in-situ test for the engineering properties of rock and soil. It has the advantages of simple operation, wide application range and strong reference. It is an in-situ test that must be carried out in geotechnical engineering investigation. The standard penetration test is to test the number of blows required for the standard penetration device to enter the soil by cm, thereby reflecting the engineering properties of the soil.

[0003] The existing standard penetration test device includes a standard penetration hammer guide rod, and the end of the standard penetration hammer guide rod is a limit nut to prevent the automatic drop-off hammer from sliding out of the rod. The front end of the guide rod is connected to the drill rod, and the standard penetration hammer and the automatic drop-off hammer are slidably connected to the standard penetration hammer guide rod. One end of the automatic drop-off hammer is freely connected to the standard penetration hammer, and the other end is connected to the wire rope. A rigid hammer pad is fixed to the end of the standard penetration hammer guide rod close to the drill rod. When conducting the test, first make the automatic falling hammer lock the standard penetration hammer, and then the winch pulls up the wire rope. At this time, the automatic falling hammer and the standard penetration hammer are lifted together. When the standard penetration hammer reaches the predetermined cm distance, the automatic falling hammer enters the unlocking section of the guide rod, and the automatic falling hammer and the standard penetration hammer will automatically separate and disengage. The standard penetration hammer makes a free fall and hits the hammer pad. The kinetic energy of the hammer strike drives a certain specification of the penetrometer into the soil through the drill rod to obtain the experimental data of one strike, completing the experimental test of one strike. At this time, the automatic falling hammer is still hovering at the tail section of the guide rod. When doing the next strike experiment, then release the winch, lower the automatic falling hammer and make it lock the standard penetration hammer, lift the standard penetration hammer to the predetermined position, the automatic falling hammer is separated from the standard penetration hammer, the standard penetration hammer makes a free fall and hits the hammer pad, repeat the experimental operation steps, drive the penetrometer into the ground, and obtain the experimental hammer strike number of a certain penetration degree, realizing the testing of the engineering properties of the rock and soil.

[0004] The above-mentioned existing technical solutions have the following defects: the number of strikes required for the standard penetration device to penetrate 30cm into the soil needs to be temporarily memorized by the staff, which requires the staff to maintain mental concentration and carefully memorize the number of strikes. If the staff forgets the number of strikes due to distraction during the striking process, the experiment needs to be repeated, which will greatly reduce work efficiency. Summary of the invention

[0005] The utility model aims to provide an automatic counter for standard penetration test in view of the problem that the number of hammer blows in standard penetration test needs to be recorded by staff in the prior art.

[0006] To achieve the above object, the utility model adopts the following technical solution: an automatic counter for standard penetration test, comprising:

[0007] A support frame, serving as a carrier;

[0008] Automatic shedding hammer, movably mounted on the top of the support frame, and can move along the height direction of the support frame;

[0009] The locking assembly is sleeved on the outer wall of the automatic falling hammer; the design of the locking assembly can ensure that the connection between the automatic falling hammer and the counter is firm and reliable, and avoids the falling off of the counter due to loose connection or failure.

[0010] The counter, located on the outer wall of the locking assembly, is used to record the number of connections between the automatic drop-off hammer and the standard penetration hammer; this makes the recording of the number of hammer strikes automatic, reduces the need for manual recording, and improves the efficiency and accuracy of the test.

[0011] The display screen is mounted on the support frame and connected to the counter electrical signal. The combination of the counter and the display screen enables the connection times to be displayed and monitored in real time, making data acquisition during the test more convenient and timely.

[0012] The whole design makes the automatic counter easy to install and operate, and can be conveniently applied in standard penetration tests, thus improving work efficiency and operational convenience.

[0013] Furthermore, the locking assembly includes a left buckle, a right buckle, a locking structure, and a mounting tube located on the outer wall of the right buckle for accommodating a counter, one end of the left buckle is hinged to the right buckle, the other end of the left buckle is installed with a locking structure, and the end of the right buckle adjacent to the locking structure is provided with a through groove for the locking structure to pass through, and the locking structure is used to connect the left buckle with the right buckle. The design of the left buckle and the right buckle makes the installation process simpler and faster, reducing the complexity and time cost of the operation. The setting of the locking structure can ensure that the connection between the left buckle and the right buckle is firm and reliable, and avoids the situation where the locking structure falls off due to loose connection or falling off.

[0014] The locking assembly has a simple structure and is easy to clean and maintain, so it can maintain a good working condition, extend its service life, and reduce subsequent maintenance costs.

[0015] Furthermore, the inner walls of the left buckle ring and the right buckle ring are provided with fastening rubber. The surface of the rubber material has a certain friction force, which can effectively increase the friction force between the left buckle ring and the right buckle ring and the automatic falling hammer, prevent them from sliding or loosening during the test, and improve the firmness of the equipment installation.

[0016] Furthermore, the locking structure includes a locking threaded rod and a locking threaded sleeve installed on the locking threaded rod, the locking threaded rod is hinged with the left buckle ring, and the locking threaded sleeve is used to connect the left buckle ring with the right buckle ring. The left buckle ring and the right buckle ring are connected together by the locking threaded sleeve, which is easy and quick to operate, reducing the time and labor cost of the assembly and disassembly process. By adjusting the tightening degree of the locking threaded sleeve, the connection tightness between the left buckle ring and the right buckle ring can be flexibly adjusted to adapt to the sizes and shapes of different standard penetration hammers, thereby enhancing the applicability and versatility of the locking assembly.

[0017] Furthermore, an anti-skid groove is provided on the outer wall of the locking threaded sleeve, which can increase the friction between the fingers and the surface of the locking threaded sleeve, making it easier for the operator to hold the threaded sleeve tightly, and reducing the risk of slipping during operation.

[0018] Furthermore, the counter includes

[0019] The sleeve is installed on the locking assembly and is used as a carrier; the sleeve serves as a carrier of the counter and can be easily installed on the locking assembly.

[0020] A counting rod is mounted on the sleeve and is movable along the length of the sleeve;

[0021] The limit structure is installed on the counting rod and is used to limit the displacement range of the technical rod; the limit structure can be adjusted as needed to ensure that the counter works normally within the set range, thereby improving the flexibility and applicability of the counter.

[0022] The button counter is located inside the sleeve and is coaxially arranged with the counting rod. The button counter is connected to the display screen by electrical signals. The button counter is connected to the display screen by electrical signals, and the counting result can be intuitively displayed on the screen, so that the user can obtain the counting information in time.

[0023] A battery is located at the top of the sleeve, and the battery is connected to the button counter. The battery at the top of the sleeve is easier to install and replace, reducing maintenance costs and time.

[0024] Furthermore, the limiting structure includes

[0025] A first limit block is mounted on the portion of the counting rod located inside the sleeve;

[0026] A second limit block is installed on the portion of the counting rod located outside the sleeve;

[0027] The spring is located between the second limit block and the sleeve and is sleeved on the counting rod. It is used to assist the counting rod in resetting, ensuring that it can quickly and accurately return to the initial position after counting is completed, ready for the next count.

[0028] The structure is simple and reliable, easy to manufacture, and improves the stability and reliability of the entire counter system.

[0029] Furthermore, the limiting structure also includes a sealing gasket located between the spring and the sleeve, and the sealing gasket is used to prevent dust from entering the sleeve from the connection between the counting rod and the sleeve.

[0030] After adopting the above technical solution, the utility model has the following beneficial effects: it is used to record the number of connections between the automatic drop-off hammer and the standard penetration hammer; it makes the recording of the number of hammer strikes automatic, reduces the need for manual recording, and improves the efficiency and accuracy of the test. The combination of the counter and the display screen enables the number of hammer strikes to be displayed and monitored in real time, making it more convenient to obtain data during the test.

[0031] The whole design makes the automatic counter easy to install and operate, and can be conveniently applied in standard penetration tests, thus improving work efficiency and operational convenience.

[0032] The locking assembly has a simple structure and is easy to clean and maintain, so it can maintain a good working condition, extend its service life, and reduce subsequent maintenance costs.

[0033] The counter has a simple and reliable structure and is easy to manufacture, thus improving the stability and reliability of the entire counter system. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0035] Figure 1 It is a structural schematic diagram of the utility model.

[0036] Figure 2 It is a structural schematic diagram of the locking assembly in the utility model.

[0037] Figure 3 It is a structural schematic diagram of the counter in the utility model.

[0038] Explanation of the reference numerals in the accompanying drawings: support frame 1, automatic falling hammer 2, locking assembly 3, left buckle 31, right buckle 32, through groove 321, locking structure 33, locking threaded rod 331, locking threaded sleeve 332, anti-slip groove 3321, mounting tube 34, fastening rubber 35, counter 4, sleeve 41, counting rod 42, limiting structure 43, first limiting block 431, second limiting block 432, spring 433, button counter 44, battery 45, sealing gasket 46, display screen 5. DETAILED DESCRIPTION

[0039] See also Figure 1-Figure 3 As shown, the technical solution adopted in this specific embodiment is: an automatic counter for standard penetration test, which includes:

[0040] A support frame 1 as a carrier.

[0041] An automatic falling hammer 2 is movably mounted on the top of the support frame 1 and can move along the height direction of the support frame 1.

[0042] The locking assembly 3 is sleeved on the outer wall of the automatic falling hammer 2. The design of the locking assembly 3 can ensure that the connection between the automatic falling hammer 2 and the counter 4 is stable and reliable, and avoids the falling off of the counter 4 due to loose connection or failure.

[0043] The counter 4 located on the outer wall of the locking assembly 3 is used to record the number of connections between the automatic drop-off hammer 2 and the standard penetration hammer, so that the recording of the number of hammer strikes becomes automatic, reducing the need for manual recording and improving the efficiency and accuracy of the test.

[0044] A display screen 5 is mounted on the support frame 1 and is electrically connected to the counter 4. The combination of the counter 4 and the display screen 5 enables the number of hammer strikes to be displayed and monitored in real time, making it more convenient to obtain data during the test.

[0045] The specific locking assembly 3 includes a left buckle 31, a right buckle 32, a locking structure 33, and a mounting tube 34 located on the outer wall of the right buckle 32 for accommodating the counter 4. One end of the left buckle 31 is hinged to the right buckle 32, and the other end of the left buckle 31 is installed with the locking structure 33. The hinged design of the left buckle 31 and the right buckle 32 makes the installation process simpler and faster, reducing the complexity and time cost of the operation. A fastening rubber 35 is provided on the inner wall of the left buckle 31 and the right buckle 32. The surface of the rubber material has a certain friction force, which can effectively increase the friction between the left buckle 31 and the right buckle 32 and the automatic falling hammer 2 after locking, prevent it from sliding or loosening during the test, and improve the firmness of the equipment installation. A through groove 321 for the locking structure 33 to pass through is provided at one end of the right buckle 32 adjacent to the locking structure 33. The locking structure 33 passes through the through groove 321 to connect the left buckle 31 and the right buckle 32 together. The provision of the locking structure 33 can ensure that the connection between the left buckle ring 31 and the right buckle ring 32 is firm and reliable, thereby preventing the locking structure 33 from falling off due to loose connection or falling off.

[0046] More specifically, the locking structure 33 includes a locking threaded rod 331 and a locking threaded sleeve 332 mounted on the locking threaded rod 331. The locking threaded rod 331 is hinged with the left buckle ring 31, and the locking threaded sleeve 332 is used to connect the left buckle ring 31 with the right buckle ring 32. The locking threaded rod 331 rotates through the through slot 321 and then the locking threaded sleeve 332 is tightened to lock the left buckle ring 31 with the right buckle ring 32 together. The left buckle ring 31 and the right buckle ring 32 are connected together by the locking threaded sleeve 332, which is easy and quick to operate, reducing the time and labor cost of the assembly and disassembly process. By adjusting the tightening degree of the locking threaded sleeve 332, the connection tightness between the left buckle ring 31 and the right buckle ring 32 can be flexibly adjusted to adapt to the sizes of different standard penetration hammers, thereby enhancing the applicability and versatility of the locking assembly 3.

[0047] More specifically, an anti-skid groove 3321 is provided on the outer wall of the locking threaded sleeve 332. The anti-skid groove 3321 can increase the friction between the finger and the surface of the locking threaded sleeve 332, making it easier for the operator to hold the threaded sleeve tightly, reducing the risk of slipping during operation.

[0048] The specific counter 4 includes:

[0049] The sleeve 41 is mounted on the locking assembly 3 and is used as a carrier. The sleeve 41 is used as a carrier of the counter 4 and can be easily mounted on the locking assembly 3.

[0050] The counting rod 42 is mounted on the sleeve 41 and is movable along the length direction of the sleeve 41 .

[0051] A limiting structure 43 is installed on the counting rod 42 to limit the displacement range of the technical rod. The limiting structure 43 can be adjusted as needed to ensure that the counter 4 works normally within the set range, thereby improving the flexibility and applicability of the counter 4.

[0052] A button counter 44 is located inside the sleeve 41 and is coaxially arranged with the counting rod 42. The button counter 44 is electrically connected to the display screen 5, and the button counter 44 is electrically connected to the display screen 5, and the counting result can be intuitively displayed on the screen, so that the user can obtain the counting information in time.

[0053] A battery 45 is located at the top of the sleeve 41. The battery 45 is connected to the button counter 44, and the battery 45 is easy to install and replace, thereby reducing maintenance cost and time.

[0054] More specifically, the limiting structure 43 includes:

[0055] A first limiting block 431 is installed on the portion of the counting rod 42 located inside the sleeve 41 .

[0056] A second limiting block 432 is installed on the portion of the counting rod 42 located outside the sleeve 41 .

[0057] The spring 433 is located between the second limit block 432 and the sleeve 41 and is sleeved on the counting rod 42. It is used to assist the counting rod 42 in resetting, ensuring that it can quickly and accurately return to the initial position after the counting is completed, so as to prepare for the next counting.

[0058] The sealing gasket 46 is located between the spring 433 and the sleeve 41. The sealing gasket 46 is used to prevent dust from entering the sleeve 41 from the connection between the counting rod 42 and the sleeve 41.

[0059] The working principle of the utility model is as follows: the left buckle ring 31 and the right buckle ring 32 are buckled onto the automatic falling hammer 2, and then the locking threaded rod 331 is rotated to make it pass through the through slot 321 on the right buckle ring 32, and then the locking threaded sleeve 332 is rotated to lock the left buckle ring 31 and the right buckle ring 32 together. After the locking assembly 3 is installed, the counter 4 is installed into the installation tube 34 to complete the installation of the equipment. During the specific use process, when the automatic falling hammer 2 grabs the standard penetration hammer, the counting rod 42 contacts the standard penetration hammer and moves into the sleeve 41, and one end of the counting rod 42 contacts the button counter 44. When the automatic falling hammer 2 is disconnected from the standard penetration hammer, the counting rod 42 is reset under the action of gravity and the spring 433, and the counting rod 42 is released from contact with the button counter 44, and then the number of grabs is displayed on the display screen 5.

[0060] The above description is only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

Claims

1. An automatic counter for standard penetration test, characterized in that: include A support frame (1) serving as a carrier; An automatic drop hammer (2) is movably mounted on the top of the support frame (1) and can move along the height direction of the support frame (1); A locking assembly (3) is sleeved on the outer wall of the automatic falling hammer (2); A counter (4), located on the outer wall of the locking assembly (3), for recording the number of times the automatic drop-off hammer (2) is connected to the standard penetration hammer; The display screen (5) is mounted on the support frame (1) and is connected to the counter (4) via electrical signals.

2. The automatic counter for standard penetration test according to claim 1, characterized in that: The locking assembly (3) comprises a left buckle (31), a right buckle (32), a locking structure (33) and a mounting tube (34) located on the outer wall of the right buckle (32) for accommodating a counter (4); one end of the left buckle (31) is hinged to the right buckle (32); the other end of the left buckle (31) is mounted with the locking structure (33); an end of the right buckle (32) adjacent to the locking structure (33) is provided with a through groove (321) for the locking structure (33) to pass through; the locking structure (33) is used to connect the left buckle (31) and the right buckle (32) together.

3. An automatic counter for standard penetration test according to claim 2, characterized in that: The inner walls of the left buckle ring (31) and the right buckle ring (32) are both provided with fastening rubber (35).

4. The automatic counter for standard penetration test according to claim 2, characterized in that: The locking structure (33) comprises a locking threaded rod (331) and a locking threaded sleeve (332) mounted on the locking threaded rod (331); the locking threaded rod (331) is hinged to the left buckle ring (31); and the locking threaded sleeve (332) is used to connect the left buckle ring (31) and the right buckle ring (32) together.

5. The automatic counter for standard penetration test according to claim 4, characterized in that: An anti-slip groove (3321) is provided on the outer wall of the locking threaded sleeve (332).

6. The automatic counter for standard penetration test according to claim 1, characterized in that: The counter (4) comprises A sleeve (41) is mounted on the locking assembly (3) and is used as a carrier; A counting rod (42) is mounted on the sleeve (41) and is movable along the length direction of the sleeve (41); A limiting structure (43) is installed on the counting rod (42) and is used to limit the displacement range of the technical rod; A button counter (44) is located inside the sleeve (41) and is coaxially arranged with the counting rod (42), and the button counter (44) is electrically connected to the display screen (5); A battery (45) is located at the top of the sleeve (41), and the battery (45) is connected to the button counter (44).

7. An automatic counter for standard penetration test according to claim 6, characterized in that: The limiting structure (43) comprises A first limit block (431) is mounted on the portion of the counting rod (42) located inside the sleeve (41); A second limit block (432) is mounted on a portion of the counting rod (42) located outside the sleeve (41); The spring (433) is located between the second limiting block (432) and the sleeve (41), and is sleeved on the counting rod (42).

8. An automatic counter for standard penetration test according to claim 7, characterized in that: The limiting structure (43) further comprises a sealing gasket (46) located between the spring (433) and the sleeve (41).

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