Foundation bearing capacity detection equipment

Abstract

The utility model discloses foundation bearing capacity detection equipment, which relates to the technical field of light dynamic penetrometers, and comprises a penetrometer main body consisting of a conical probe, a probe rod, a hammer cushion column, a guide rod, a top seat and a gravity hammer, and counting components are distributed on the top of the top seat and the outer side of the guide rod. And the counting assembly is used for counting the times of hammering the hammer cushion column by the gravity hammer. According to the utility model, through the arrangement of the counting assembly, when the gravity hammer moves upwards to the middle position of the transmitting head and the receiving head, the gravity hammer shields light emitted by the transmitting head, at the moment, the receiving head outputs a pulse to the counter, and the counter counts and displays the count through the display screen; in this way, detection personnel can conveniently observe the hammering times of the gravity hammer, and compared with a traditional mode of counting through visual inspection and silence, more convenience is achieved, and it is effectively avoided that external factors affect the counting accuracy.

Description

Technical Field

[0001] The utility model relates to the technical field of light dynamic penetrometers, specifically to a foundation bearing capacity detection device. Background Technique

[0002] The foundation bearing capacity is the bearing potential exerted by the foundation soil per unit area with the increase of load, and the common unit is KPa. It is a comprehensive term for evaluating the foundation stability. The light dynamic penetrometer is one of the commonly used devices for detecting the foundation bearing capacity of shallow foundations;

[0003] The light dynamic penetrometer uses a certain hammering energy (hammer weight 10 kg) to drive a conical probe of a certain specification into the soil, and discriminates the foundation bearing capacity according to the depth reached by the penetration hammering number. Record the hammering number required to drive 30 cm into the soil layer in the light penetration test table at the base. When the soil layer is hard and the hammering number is large, segmental recording is adopted, and the corresponding hammering number is recorded every 10 cm of penetration. When organizing the data, the hammering number required for 30 cm is used as an index for calculation.

[0004] When the traditional light dynamic penetrometer is used for detection operation, its hammering number is counted by the tester through visual inspection and silent counting. When the hammering number is large, it is easy to make counting errors. Moreover, in some construction sites, the noise is noisy, which will also interfere with the counting. Based on this, a foundation bearing capacity detection device is provided. Content of the Utility Model

[0005] The purpose of the utility model is to provide a foundation bearing capacity detection device to solve the problems in the above background.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a foundation bearing capacity detection device, including a penetrometer main body composed of a conical probe, a drill rod, a hammer cushion column, a guide rod, a top seat and a gravity hammer. The conical probe, the drill rod, the hammer cushion column and the guide rod are distributed from bottom to top and are fixedly connected by a threaded structure. The top seat is welded and fixed to the top of the guide rod. The gravity hammer is slidably sleeved on the outside of the guide rod. A counting component is distributed on the top of the top seat and the outside of the guide rod. The counting component is used to count the number of times the gravity hammer hammers the hammer cushion column;

[0007] The counting component includes a disc seat, an arc-shaped side plate, a transmitting head, a receiving head, a counter and a wire;

[0008] The disc seat is fixed to the top of the top seat. There are two arc-shaped side plates, and the two arc-shaped side plates are symmetrically fixed to the bottom of the disc seat with the top seat as the center;

[0009] The transmitting head and the receiving head are symmetrically installed on two arc-shaped side plates, and through holes penetrating both sides of the guiding rod are formed at positions where the guiding rod is aligned with the transmitting head and the receiving head. The through holes are used to provide channels for the light transmission of the transmitting head and the receiving head.

[0010] The counter is fixedly installed on the top of the disc base. The transmitting head and the receiving head are electrically connected to the counter through wires, and the counter is used to display the count.

[0011] As a further solution of the present utility model: Handles are symmetrically welded and fixed on the outer side of the gravity hammer, and the two handles and the two arc-shaped side plates are in a staggered distribution state along the circumferential direction.

[0012] As a further solution of the present utility model: A limiting protrusion is integrally formed on the outer side of the guiding rod, and a sector-shaped movable groove is integrally formed at the position where the inner side of the gravity hammer contacts the limiting protrusion. The angle of the sector-shaped movable groove is greater than the thickness of the limiting protrusion and less than the angle between the two arc-shaped side plates.

[0013] As a further solution of the present utility model: An annular card slot is integrally formed on the outer side of the disc base. The wires connected to the transmitting head and the receiving head are clamped inside the annular card slot. The cross-section of the annular card slot is in a "C" shape, and the groove opening height of the "C" shape is less than the outer diameter of the wire.

[0014] As a further solution of the present utility model: The distance between the mutually approaching ends of the transmitting head and the receiving head is greater than the outer diameter of the gravity hammer.

[0015] Compared with the prior art, the beneficial effects of the present utility model are:

[0016] By setting the counting component, when the gravity hammer moves up to the middle position between the transmitting head and the receiving head, the gravity hammer blocks the light emitted by the transmitting head. At this time, the receiving head outputs a pulse to the counter, and the counter counts and displays it through the display screen. In this way, it is convenient for the detection personnel to observe the hammering times of the gravity hammer. Compared with the traditional method of visual inspection and mental counting, it is not only more convenient but also effectively avoids the influence of external factors on the counting accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present utility model;

[0018] Figure 2 is a schematic diagram of the split state of the main parts of the penetrometer of the present utility model;

[0019] Figure 3 is a schematic structural diagram of the counting component of the present utility model;

[0020] Figure 4 Schematic diagram of the structure of the fan-shaped movable groove of the present utility model.

[0021] In the figure: 1. Penetrometer main body; 101. Cone probe; 102. Probe rod; 103. Hammer cushion column; 104. Guide rod; 105. Top seat; 106. Gravity hammer; 107. Handle; 108. Fan-shaped movable groove; 2. Counting component; 201. Disc seat; 202. Arc-shaped side plate; 203. Transmitting head; 204. Receiving head; 205. Counter; 206. Wire; 207. Through hole; 208. Ring-shaped card slot; 3. Limit protrusion. 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 creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1 to 4 , in the embodiment of the present utility model, a foundation bearing capacity detection device includes a penetrometer main body 1 composed of a cone probe 101, a probe rod 102, a hammer cushion column 103, a guide rod 104, a top seat 105 and a gravity hammer 106. The cone probe 101, the probe rod 102, the hammer cushion column 103 and the guide rod 104 are distributed in sequence from bottom to top and are fixedly connected by a threaded structure. The top seat 105 is welded and fixed to the top of the guide rod 104. The gravity hammer 106 is slidably sleeved outside the guide rod 104. A counting component 2 is distributed on the top of the top seat 105 and the outside of the guide rod 104. The counting component 2 is used to count the number of times the gravity hammer 106 hits the hammer cushion column 103;

[0024] The counting component 2 includes a disc seat 201, an arc-shaped side plate 202, a transmitting head 203, a receiving head 204, a counter 205 and a wire 206;

[0025] The disc seat 201 is fixed to the top of the top seat 105. There are two arc-shaped side plates 202, and the two arc-shaped side plates 202 are symmetrically fixed to the bottom of the disc seat 201 with the top seat 105 as the center;

[0026] The transmitting head 203 and the receiving head 204 are symmetrically installed on the two arc-shaped side plates 202, and a through hole 207 penetrating both sides of the guide rod 104 is provided at a position where the guide rod 104 is aligned with the transmitting head 203 and the receiving head 204. The through hole 207 is used to provide a channel for the light transmission of the transmitting head 203 and the receiving head 204;

[0027] The counter 205 is fixedly installed on the top of the disc base 201. The transmitting head 203 and the receiving head 204 are electrically connected to the counter 205 through wires 206, and the counter 205 is used to display the count.

[0028] On the outer side of the gravity hammer 106, handles 107 are symmetrically welded and fixed. The two handles 107 and the two arc-shaped side plates 202 are in a staggered distribution state in the circumferential direction.

[0029] In this embodiment: When performing the foundation bearing capacity test, the whole device is vertically placed at the position to be tested, and the power supply of the counter 205 is turned on. Then, hold the handle 107 by hand and move the gravity hammer 106 upward. When the gravity hammer 106 moves to the middle of the transmitting head 203 and the receiving head 204 and reaches the specified height, release the hand holding the handle 107. The gravity hammer 106 freely falls and hammers the hammer pad column 103. This hammering force is transmitted to the sounding rod 102 and the cone penetrometer 101, causing the sounding rod 102 and the cone penetrometer 101 to be inserted into the ground. Then, repeat this action and record the number of hammer blows required to drive 30 cm into the soil layer.

[0030] When the gravity hammer 106 moves to the middle position between the transmitting head 203 and the receiving head 204, the gravity hammer 106 blocks the light emitted by the transmitting head 203. At this time, the receiving head 204 outputs a pulse to the counter 205, and the counter 205 counts and displays it through the display screen. In this way, it is convenient for the detection personnel to observe the number of hammer blows of the gravity hammer 106. Compared with the traditional method of visual inspection and silent counting, it is not only more convenient, but also effectively avoids the influence of external factors on the counting accuracy (it should be noted that: the counter 205 is built-in with a storage battery, which can provide power for the operation of the counter 205).

[0031] Please refer to Figures 1 to 4 On the outer side of the guide rod 104, a limit protrusion 3 is integrally formed. At the position where the inner side of the gravity hammer 106 contacts the limit protrusion 3, a sector-shaped movable groove 108 is integrally formed. The angle of the sector-shaped movable groove 108 is greater than the thickness of the limit protrusion 3 and less than the angle between the two arc-shaped side plates 202.

[0032] The distance between the mutually approaching ends of the transmitting head 203 and the receiving head 204 is greater than the outer diameter of the gravity hammer 106.

[0033] In this embodiment: Through the mutual cooperation of the limit protrusion 3 and the sector-shaped movable groove 108, the gravity hammer 106 can have a certain rotation space, so that during the detection process, the posture when holding the handle 107 will not be fixed, avoiding the increase of detection fatigue caused by the fixed posture, and at the same time preventing the handle 107 on the outer side of the gravity hammer 106 from interfering with the arc-shaped side plates 202.

[0034] The structure in which the distance between the ends of the transmitting head 203 and the receiving head 204 that are close to each other is greater than the outer diameter of the gravity hammer 106 prevents the gravity hammer 106 from colliding with the transmitting head 203 and the receiving head 204.

[0035] Please refer particularly to Figures 1 to 3 , an annular slot 208 is integrally formed on the outer side of the disk base 201. The wires 206 connected to the transmitting head 203 and the receiving head 204 are snap-fitted inside the annular slot 208. The cross-section of the annular slot 208 is in a "C" shape, and the height of the notch of the "C" shape is less than the outer diameter of the wire 206.

[0036] In this embodiment: The wire 206 itself has a certain deformation elasticity. After the wire 206 is inserted into the annular slot 208, the wire 206 resets and fits against the inner wall of the annular slot 208. The notch of the annular slot 208 can limit the wire 206. The annular slot 208 can be used to store and limit the wire 206, preventing the scattered wire 206 from affecting the up and down movement of the gravity hammer 106.

[0037] The above-mentioned is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. A foundation bearing capacity detection device, comprising a penetration instrument body (1) consisting of a conical probe (101), a probe rod (102), a hammer pad column (103), a guide rod (104), a top seat (105) and a gravity hammer (106), wherein the conical probe (101), the probe rod (102), the hammer pad column (103) and the guide rod (104) are sequentially arranged from bottom to top and connected and fixed by a threaded structure, the top seat (105) is welded and fixed to the top of the guide rod (104), and the gravity hammer (106) is slidably sleeved on the outer side of the guide rod (104), characterized in that: A counting assembly (2) is distributed on the top of the top seat (105) and the outer side of the guide rod (104), and the counting assembly (2) is used to count the number of times the gravity hammer (106) strikes the hammer pad column (103); The counting component (2) comprises a disc seat (201), an arc-shaped side plate (202), a transmitting head (203), a receiving head (204), a counter (205), and a wire (206); The disc seat (201) is fixed to the top of the top seat (105), and two arc-shaped side plates (202) are provided. The two arc-shaped side plates (202) are symmetrically fixed to the bottom of the disc seat (201) with the top seat (105) as the center. The transmitting head (203) and the receiving head (204) are symmetrically mounted on the two arc-shaped side plates (202), and a through hole (207) penetrating through both sides of the guide rod (104) is provided at a position where the guide rod (104) is aligned with the transmitting head (203) and the receiving head (204), and the through hole (207) is used to provide a channel for light transmission of the transmitting head (203) and the receiving head (204); The counter (205) is fixedly mounted on the top of the disc seat (201); the transmitting head (203) and the receiving head (204) are electrically connected to the counter (205) via a wire (206); and the counter (205) is used to display the count.

2. The foundation bearing capacity detection device according to claim 1, characterized in that: A handle (107) is symmetrically welded and fixed to the outer side of the gravity hammer (106), and the two handles (107) and the two arc-shaped side plates (202) are staggered and distributed along the circumferential direction.

3. The foundation bearing capacity detection device according to claim 2, characterized in that: A limiting protrusion (3) is integrally formed on the outer side of the guide rod (104), and a fan-shaped movable groove (108) is integrally formed on the inner side of the gravity hammer (106) at a position where the limiting protrusion (3) contacts the limiting protrusion, wherein the angle of the fan-shaped movable groove (108) is greater than the thickness of the limiting protrusion (3) and less than the angle between the two arc-shaped side plates (202).

4. The foundation bearing capacity detection device according to claim 1, characterized in that: The outer side of the disc seat (201) is integrally provided with an annular slot (208); the wire (206) connected to the transmitting head (203) and the receiving head (204) is clamped on the inner side of the annular slot (208); the cross section of the annular slot (208) is a "C"-shaped structure, and the notch height of the "C"-shaped structure is smaller than the outer diameter of the wire (206).

5. The foundation bearing capacity detection equipment according to claim 1, characterized in that: The distance between the ends of the transmitting head (203) and the receiving head (204) that are close to each other is greater than the outer diameter of the gravity hammer (106).

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