Small cone dynamic penetrometer

Abstract

The utility model discloses a small cone dynamic penetrometer which comprises a measuring rod, a fixing base is fixed to the bottom end of the measuring rod, a limiting cylinder is installed at one end of the fixing base, a center penetrating hammer is movably arranged on the outer side wall of the measuring rod, a center penetrating hole is formed in the center penetrating hammer, handles are installed at the two ends and the two sides of the outer side wall of the center penetrating hammer respectively, and the center penetrating hole is formed in the center penetrating hammer. A cone is fixed to one end of the fixing pile, and a beating block is fixed to the other end of the fixing pile. According to the small cone dynamic penetrometer, through the arrangement of the supporting rod, the fixing pile, the cone, the fixing ring and other assemblies, when the cone dynamic penetrometer is used, the fixing pile can penetrate through the supporting rod to support and limit the probe rod through the supporting rod, so that the probe rod is stably inserted into a soil layer; and the cone dynamic penetrometer does not need to be supported by a worker in the subsequent work of the cone dynamic penetrometer, so that the manpower is effectively saved, and the cone dynamic penetrometer is more convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of dynamic detection tests, in particular to a small cone penetration tester. Background Technique

[0002] The cone penetration tester is an instrument used in dynamic detection tests, commonly used in fields such as geology, building materials, and transportation. When using this cone penetration tester, after assembling its multiple components together, the front cone head of the drill rod in the cone penetration tester is inserted into the test soil layer. Then, the staff continuously pushes the drop hammer to make it fall freely, driving the cone head vertically into the soil layer, and recording the corresponding data in real time after each impact. Then, based on the corresponding data, the change of the soil layer is judged to determine the engineering properties of the soil.

[0003] When the existing cone penetration tester is in use, one staff member moves the drop hammer up and down to make it free fall, and another person needs to hold the drill rod. This working process is relatively labor-consuming and troublesome to work. Therefore, a small cone penetration tester is provided to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide a small cone penetration tester to solve the problem of troublesome operation and waste of manpower proposed in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A small cone penetration tester, including a measuring rod, a fixed seat is fixed at the bottom end of the measuring rod, and a limiting cylinder is installed at one end of the fixed seat. A drop hammer is movably arranged on the outer side wall of the measuring rod. A through hole is arranged inside the drop hammer. Handles are installed at both ends and on both sides of the outer side wall of the drop hammer. A hammer seat is installed at the other end of the measuring rod, and fixing screws are movably arranged on both sides inside the hammer seat. A drill rod is movably arranged at one end inside the hammer seat. An installation seat is installed at one end of the drill rod, and a cone head is fixed at one end of the installation seat. A fixing ring is movably arranged on the outer side wall of the drill rod, and a movable groove is arranged inside the fixing ring. Support rods are fixed on both sides of the movable groove. Installation holes are arranged inside the support rods. Fixing piles are movably arranged inside the installation holes. A cone is fixed at one end of the fixing pile, and a hammering block is fixed at the other end of the fixing pile.

[0006] Preferably, there are two groups of the support rods, and the two groups of support rods are symmetrically distributed about the central axis of the drill rod.

[0007] Preferably, the cross-section of the installation hole is larger than the cross-section of the fixing pile, and the installation hole is adapted to the fixing pile.

[0008] Preferably, an anti-slip rubber sleeve is sleeved on the outer side wall of the handle. Chambers are arranged inside the anti-slip rubber sleeve. Anti-slip ridges are fixed on the outer side wall of the anti-slip rubber sleeve. Connecting sleeves are fixed on one side of the anti-slip rubber sleeve.

[0009] Preferably, a plurality of the anti-slip ridges are provided, and the plurality of anti-slip ridges are equidistantly distributed on the outer side wall of the anti-slip rubber sleeve.

[0010] Preferably, the cross-section of the connecting sleeve is larger than that of the handle, and the connecting sleeve is adapted to the handle.

[0011] Preferably, guide grooves are arranged at both ends inside the measuring rod. Guide blocks are movably arranged inside the guide grooves. A fixing ring is fixed on the outer side wall of the guide block, and the outer side wall of the fixing ring is fixed to the inner side wall of the uniformly-pierced holes.

[0012] Preferably, two groups of the guide blocks are provided, and the two groups of guide blocks are symmetrically distributed about the central axis of the measuring rod.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: This small conical dynamic penetration tester not only saves manpower, realizes anti-slip of the grips on both sides of the drop hammer, but also realizes guiding of the drop hammer, facilitating people to accurately grasp the grips.

[0014] By providing components such as a support rod, a fixing pile, a cone, and a fixing ring, when using this conical dynamic penetration tester, the fixing pile can be passed through the support rod to support and limit the probe rod through the support rod, so that the probe rod can be stably inserted into the soil layer. Then, during the subsequent work of this conical dynamic penetration tester, it is not necessary for the staff to hold this conical dynamic penetration tester, effectively saving manpower and being more convenient to use.

[0015] By providing components such as a connecting sleeve, an anti-slip rubber sleeve, a chamber, and anti-slip ridges, when using this conical dynamic penetration tester, the staff needs to hold the handle and push the drop hammer to move up and down for free fall. By adding the above components to the outer side wall of the handle, it is not easy for the staff to slip when holding the handle and pushing the drop hammer, making the use effect of this conical dynamic penetration tester better.

[0016] By providing components such as a guide groove, a fixing ring, and a guide block, when using this conical dynamic penetration tester to push the drop hammer to move up and down, the movement of the drop hammer can be guided by the sliding of the guide block inside the guide groove, so that the drop hammer moves precisely up and down, ensuring that the position of the handle remains the same each time, and better assisting the staff to hold the handle and push the drop hammer to move. Description of the Drawings

[0017] Figure 1Schematic diagram of the front partial sectional structure of the present utility model;

[0018] Figure 2 of the present utility model Figure 1 Schematic diagram of the enlarged structure at position A in;

[0019] Figure 3 Schematic diagram of the side view structure of the present utility model;

[0020] Figure 4 Schematic diagram of the top view structure of the through-hole of the present utility model.

[0021] In the figure: 1, measuring rod; 2, limiting cylinder; 3, fixed seat; 4, fixing screw; 5, probing rod; 6, support rod; 7, fixing pile; 8, mounting seat; 9, conical head; 10, cone; 11, mounting hole; 12, hammering block; 13, fixing ring; 14, movable groove; 15, hammer seat; 16, handle; 17, through-hole hammer; 18, connecting sleeve; 19, anti-slip rubber sleeve; 20, cavity; 21, anti-slip rib; 22, guiding groove; 23, fixing ring; 24, guiding block; 25, through-hole. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0023] Please refer to Figures 1-4 , an embodiment provided by the present utility model: a small cone dynamic penetrometer, including a measuring rod 1, a fixed seat 3 is fixed at the bottom end of the measuring rod 1, and a limiting cylinder 2 is installed at one end of the fixed seat 3. A through-hole hammer 17 is movably arranged on the outer side wall of the measuring rod 1. A through-hole 25 is arranged inside the through-hole hammer 17. Handles 16 are installed at both ends and on both sides of the outer side wall of the through-hole hammer 17. A hammer seat 15 is installed at the other end of the measuring rod 1. Fixing screws 4 are movably arranged on both sides inside the hammer seat 15. A probing rod 5 is movably arranged at one end inside the hammer seat 15. An installation seat 8 is installed at one end of the probing rod 5, and a conical head 9 is fixed at one end of the installation seat 8. A fixing ring 13 is movably arranged on the outer side wall of the probing rod 5, and a movable groove 14 is arranged inside the fixing ring 13. Support rods 6 are fixed on both sides of the movable groove 14. Mounting holes 11 are arranged inside the support rods 6. Fixing piles 7 are movably arranged inside the mounting holes 11. A cone 10 is fixed at one end of the fixing pile 7, and a hammering block 12 is fixed at the other end of the fixing pile 7;

[0024] There are two sets of support rods 6, and the two sets of support rods 6 are symmetrically distributed about the central axis of the sounding rod 5. The symmetrically distributed support rods 6 can stably support the cone penetration test instrument;

[0025] The cross-section of the installation hole 11 is larger than the cross-section of the fixing pile 7, and the installation hole 11 and the fixing pile 7 are matched with each other, which facilitates the fixing pile 7 to pass through the support rod 6 for positioning;

[0026] Specifically, as Figure 1 and Figure 3 shown, the fixing ring 13 is sleeved on the outer wall of the sounding rod 5 through the movable groove 14. After the cone penetration test instrument is inserted into the soil, the fixing ring 13 is pushed downward to make the installation hole 11 fit the soil surface. Then, the fixing pile 7 is passed through the installation hole 11 by the cone 10 and driven into the soil to fix the support rod 6. Thus, the cone penetration test instrument is supported by the support rod 6, so that the cone penetration test instrument does not need to be supported by people during subsequent operations.

[0027] The outer wall of the handle 16 is sleeved with an anti-slip rubber sleeve 19. Chambers 20 are provided inside the anti-slip rubber sleeve 19. Anti-slip ridges 21 are fixed on the outer wall of the anti-slip rubber sleeve 19. Connecting sleeves 18 are fixed on one side of the anti-slip rubber sleeve 19;

[0028] There are several anti-slip ridges 21, and the several anti-slip ridges 21 are equidistantly distributed on the outer wall of the anti-slip rubber sleeve 19. The equidistantly distributed anti-slip ridges 21 make the anti-slip performance of the anti-slip rubber sleeve 19 better;

[0029] The cross-section of the connecting sleeve 18 is larger than the cross-section of the handle 16, and the connecting sleeve 18 and the handle 16 are matched with each other, which is convenient for installing the anti-slip rubber sleeve 19 through the connecting sleeve 18;

[0030] Specifically, as Figure 1 and Figure 2 shown, the anti-slip rubber sleeve 19 is sleeved on the outer wall of the handle 16 through the connecting sleeve 18. At the same time, with the cooperation of the anti-slip ridges 21, the friction between people's hands and the handle 16 when holding the handle 16 is effectively increased, and it is not easy to slip during the process of grasping the handle 16.

[0031] Guide grooves 22 are provided at both ends inside the measuring rod 1. Guide blocks 24 are movably arranged inside the guide grooves 22. A fixing ring 23 is fixed on the outer wall of the guide block 24, and the outer wall of the fixing ring 23 is fixedly connected to the inner wall of the uniformly distributed through holes 25;

[0032] There are two sets of guide blocks 24, and the two sets of guide blocks 24 are symmetrically distributed about the central axis of the measuring rod 1. The symmetrically distributed guide blocks 24 have a better guiding effect on the core hammer 17;

[0033] Specifically, as Figure 2 and Figure 4 shown, during the up and down movement of the impact hammer 17, the guide block 24 on the inner side wall of the impact hammer 17 will slide in the guide groove 22 inside the measuring rod 1. The up and down movement of the impact hammer 17 is guided through this sliding, ensuring that the position of the handle 16 remains consistent each time the impact hammer 17 drops, and better pushing the impact hammer 17.

[0034] Working principle: When the present utility model is in use, after taking the components of the cone dynamic penetration tester, the limit cylinder 2 is assembled with the fixed seat 3 at the top end of the measuring rod 1, then passed through the hammer seat 15 inside the impact hammer 17, and then the hammer seat 15 is fixed to the other end of the measuring rod 1 and the fixing screw 4 is tightened for locking. Then one end of the probe rod 5 is fixed to the other end of the hammer seat 15, and the other end of the probe rod 5 is installed with the cone head 9 through the mounting seat 8. They are assembled into a complete whole. Then the cone head 9 is aligned with the soil layer to be detected and inserted. After insertion, the support rod 6 is pushed to fit onto the soil surface, and then the fixing pile 7 is taken and passed through the mounting hole 11 inside the cone body 10 and driven into the soil through the cone body 10 fixed below to support and position the cone dynamic penetration tester. After positioning, the operator can hold the handle 16 and push the impact hammer 17 upward to the position of the limit cylinder 2 through the sliding of the guide block 24 inside the guide groove 22 and then release it, so that the impact hammer 17 freely falls to impact the hammer seat 15, causing the cone head 9 at the bottom end of the hammer seat 15 to penetrate deeper into the soil. Then this operation is repeated multiple times and the corresponding data after each impact is recorded, and then the change of the soil layer is judged according to the corresponding data.

[0035] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A small cone dynamic penetration instrument, comprising a measuring rod (1), characterized in that: A fixing seat (3) is fixed at the bottom end of the measuring rod (1), and a limiting cylinder (2) is installed at one end of the fixing seat (3). A core-piercing hammer (17) is movably provided on the outer wall of the measuring rod (1), and a core-piercing hole (25) is provided inside the core-piercing hammer (17). Handles (16) are installed at both ends and both sides of the outer wall of the core-piercing hammer (17). A hammer seat (15) is installed at the other end of the measuring rod (1), and fixing screws (4) are movably provided on both sides of the inside of the hammer seat (15). A probe rod (5) is movably provided at one end of the inside of the hammer seat (15), and the probe rod (5) 5) is provided with a mounting seat (8) at one end, and a cone head (9) is fixed to one end of the mounting seat (8), a fixing ring (13) is movably provided on the outer wall of the probe rod (5), and a movable groove (14) is provided inside the fixing ring (13), support rods (6) are fixed on both sides of the movable groove (14), and mounting holes (11) are provided inside the support rods (6), and a fixing pile (7) is movably provided inside the mounting hole (11), a cone (10) is fixed to one end of the fixing pile (7), and a hammering block (12) is fixed to the other end of the fixing pile (7).

2. A small cone dynamic penetration instrument according to claim 1, characterized in that: Two groups of support rods (6) are provided, and the two groups of support rods (6) are symmetrically distributed about the central axis of the probe rod (5).

3. A small cone dynamic penetration instrument according to claim 1, characterized in that: The cross section of the mounting hole (11) is larger than the cross section of the fixing pile (7), and the mounting hole (11) and the fixing pile (7) are matched with each other.

4. A small cone dynamic penetration instrument according to claim 1, characterized in that: The outer wall of the handle (16) is sleeved with an anti-skid rubber sleeve (19), a cavity (20) is provided inside the anti-skid rubber sleeve (19), an anti-skid convex strip (21) is fixed to the outer wall of the anti-skid rubber sleeve (19), and a connecting sleeve (18) is fixed to one side of the anti-skid rubber sleeve (19).

5. A small cone dynamic penetration instrument according to claim 4, characterized in that: A plurality of the anti-slip convex strips (21) are provided, and the plurality of the anti-slip convex strips (21) are distributed at equal intervals on the outer side wall of the anti-slip rubber sleeve (19).

6. A small cone dynamic penetration instrument according to claim 4, characterized in that: The cross section of the connecting sleeve (18) is larger than the cross section of the handle (16), and the handle (16) is matched with the fixing ring (13).

7. The small cone dynamic penetration instrument according to claim 1, characterized in that: Both ends of the measuring rod (1) are provided with guide grooves (22), and guide blocks (24) are movably provided inside the guide grooves (22). A fixing ring (23) is fixed to the outer wall of the guide block (24), and the outer wall of the fixing ring (23) is fixed to the inner wall of the evenly penetrating hole (25).

8. A small cone dynamic penetration instrument according to claim 7, characterized in that: The guide blocks (24) are provided in two groups, and the two groups of guide blocks (24) are symmetrically distributed about the axis of the measuring rod (1).

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