JP4750267B2 - Self-propelled testing machine testing equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a self-propelled testing machine for ground investigation. More particularly, the present invention relates to a testing device for a Swedish sounding self-propelled testing machine.
[0002]
[Prior art]
In ground surveys such as residential land construction planned sites, in order to inspect soil properties such as ground properties, a test rod is inserted into the ground to be inspected, and the subsidence state such as the self-sinking speed of the rod is investigated. This is done in order to make the most suitable foundation design for the land and to enhance the durability and earthquake resistance of the building. In the case of soft land, this is done to obtain basic data for taking measures to prevent the occurrence of uneven subsidence and land subsidence later.
[0003]
This is known as a so-called Swedish sounding method in which three types of weights are loaded on the rod to self-sink, and when the self-sink stops, no further load is applied to rotate the test rod. Using a testing machine, the penetration resistance of the soil on the ground to be inspected is measured, and this is used as a base for judging the hardness or softness of the soil or the structure of the soil layer. In the case of the conventional method, it is desirable to select three types of weights efficiently, but there is also a demand for more data to be collected as much as possible by increasing the number of types and increasing the selection range of weights. Yes.
[0004]
The soil layer by soil inspection is investigated to a depth exceeding 10 m. In order to better understand the soil layer, tests are being carried out in complex combinations of rapid self-settling, low-speed self-settling, forced intrusion due to rotation, and the like. For the survey on the land with a lot of soft ground where the ground must be strengthened, in addition to the operation of the relative lowering and raising of the three specified weights according to the settling of the test rod, three or more It is desired that the weights of the present invention be streamlined or automated as in the past.
[0005]
In addition, it is desired to reduce the cost of the apparatus by simplifying the load system of the weight, and to perform a large number of measurements with many self-propelled testing machines for accurate ground surveys.
[0006]
[Problems to be solved by the invention]
The present invention has been made based on such a technical background, and achieves the following object. An object of the present invention is to provide a tester for a Swedish sounding type self-propelled testing machine that aims to stabilize a load system including four weights.
[0007]
Another object of the present invention is to provide a tester for a Swedish sounding type self-propelled testing machine in which the testing machine is made inexpensive by simplifying the internal structure of a load system composed of four weights. It is in. Still another object of the present invention is to shorten the test time and improve the test efficiency of soft ground by simplifying the test method of the load system consisting of four weights for rationalizing or automating the descent into the ground. The object is to provide a Swedish-style sounding type self-propelled testing machine.
[0008]
It is still another object of the present invention to provide a Swedish sounding type self-propelled testing machine testing apparatus that shortens the test continuation time of a test using a combination of complicated test methods. Still another object of the present invention is to test a Swedish sounding type self-propelled testing machine capable of subdividing the test interval by using the internal structure of the load system consisting of four weights and performing a more accurate test. To provide an apparatus.
[0009]
[Means for Solving the Problems]
In order to solve the above problems, the following means are adopted. The test apparatus of the self-propelled testing machine of the present invention 1
A self-propelled testing machine for testing by inserting a test rod into the ground,
An elevator installed in the self-propelled testing machine for raising and lowering the weight body;
A first weight that is raised and lowered by the elevator;
A second weight body, a third weight body, and a fourth weight body that can be supported by their own weight and move relative to each other on the first weight body ;
Wire means for connecting the first weight body and the elevator;
A gauge body interposed between the first weight body and the wire means for setting a relative lifting distance of the first weight body and the second weight body ;
A clamping means included in the second weight body for clamping the test rod, and a rotary drive device for applying a rotational drive force to the test rod;
A position detection device provided between the gauge body and the second weight body for measuring a relative lifting distance between the gauge body and the second weight body;
After the test rod is fixed to the clamping means of the second weight body, the second weight is moved to the test rod when the first weight body is lowered and separated from the second weight body. A first weight to which only the weight of the weight of the weight is added is configured,
When the first weight is further lowered, the first vertical body is separated from the third weight body, and the third vertical body is engaged with the second weight body by its own weight. A second weight in which the weight of the second weight body and the third weight body is added to the rod is configured;
When the first weight is further lowered, the first vertical body is separated from the fourth weight, and the fourth weight is engaged with the second weight by its own weight. A third weight in which the weight of the second weight body, the third weight body, and the fourth weight body are added to the test rod is configured;
When the first weight body is further lowered by one stage, a stay provided on the first weight body engages with the second weight body, and the second weight body, The third weight, the fourth weight, and a fourth weight to which the weights of the first weight are added are configured.
[0010]
Test apparatus of the present invention 2 of the self-propelled tester, in the present invention 1, the fourth weight member is to be suspended by engaging its own weight to the second weight fixed engagement rod member It is a feature.
A test apparatus for a self-propelled testing machine according to a third aspect of the present invention is characterized in that, in the first aspect of the present invention, the clamping means is rotatably provided on the second weight body.
A test apparatus for a self-propelled testing machine according to a fourth aspect of the present invention is characterized in that, in the first aspect of the present invention, the test apparatus has a control device for recording, calculating, and displaying a test result.
[0011]
A test apparatus for a self-propelled testing machine according to a fifth aspect of the present invention is the test apparatus according to the first aspect of the present invention, wherein the third weight body is a motor, and its shaft portion engages with the second weight body so as to be movable relative to the vertical direction. It is characterized by that.
The test apparatus of self-propelled tester of the present invention 6, in the present invention 5, the rotary drive means comprises a sprocket provided on the second weight body, provided on the motor of the third weight body It is characterized by being connected to a sprocket .
[0013]
DETAILED DESCRIPTION OF THE INVENTION
[Embodiment 1]
Embodiment 1 of the present invention will be described below with reference to the drawings. FIG. 1 is an overall front view of a self-propelled testing machine 1 equipped with a test apparatus A of the present invention, and FIG. 2 is a side view thereof. This self-propelled testing machine 1 is a Swedish sounding type self-propelled testing machine, and its main body configuration is based on Japanese Patent Laid-Open No. 10-38781 filed by the same applicant. Since the basic test method is described in this publication, the detailed description is omitted.
[0014]
The outline of the structure is that the test machine main body located on the test vehicle that is self-propelled, the elevator provided on the test machine main body, the first weight raised and lowered by the elevator, and the first weight placed by gravity. A second weight, a third weight placed on the second weight by gravity and pushed up by the first weight, a clamping means included in the second weight for clamping the test rod, and included in the second weight A rotation driving device for applying a rotational driving force to the test rod, wire means for connecting the elevator and the first weight, and a gauge body interposed between the wire means and the first weight and suspended by the wire means And a detection device provided between the gauge body and the second weight for measuring the relative lifting distance between the gauge body and the second weight.
[0015]
The present invention is an improved development of the test configuration of this self-propelled testing machine. The self-propelled testing machine 1 includes a test apparatus A. The main body 2 of the self-propelled testing machine 1 is provided with a traveling infinite belt 3 on the left and right, and can proceed even on land with poor ground surface, such as wasteland and creation land. When the test position is determined, the self-propelled testing machine 1 is stably fixed to the ground 5 by four out triggers 4 on the front and rear sides and the left and right sides.
[0016]
On the main body 2, a generator unit 6 incorporating a prime mover is mounted. A leader 7 is fixed to the main body 2 and has a height exceeding 10 m. The leader 7 is erected substantially vertically. A pulley device 8 is provided at the upper end of the leader 7. A wire 9 is suspended via the pulley device 8.
[0017]
One end of the wire 9 is wound around an elevating drive drum (not shown) of the winch device 10 fixed to the main body 2. The winch device 10 is an elevator for moving up and down a test apparatus A described later. A test apparatus A, which will be described later, is suspended from the other end of the wire 9.
[0018]
This test apparatus is moved up and down by the rotation of the drum of the winch device 10 and mainly comprises a first weight body 11, a second weight body 12, a third weight body 13, and a fourth weight body 14. Yes. A first weight body 11 of the test apparatus A is suspended from a wire 9 via a gauge body 15.
[0019]
The gauge body 15 is provided on the first weight body, and a scale is provided for each fixed size. The gauge sensor provided on the second weight body reads the relative distance as a pulse. The relative descending distance of the gauge body with respect to the second weight body 12 is set to a constant value. Next, when the actual relative descending distance reaches a certain value, the gauge body 15 is lowered, and scale control is performed so as to descend again by the certain value. Finally, four-stage positioning control is performed.
[0020]
Further, a test rod 16 is provided in front of the self-propelled testing machine 1 through the test apparatus A, and a screw point 17 is provided at one end thereof so as to be opposed to the ground 5. On the other hand, a linear encoder, that is, a linear measuring device 19 (detection device) that detects a position in conjunction with the movement of the wire 18 attached to the second weight body 12 is provided at the upper end of the reader 7.
[0021]
The linear measuring device 19 includes a rotating body that is linked to the pulley device 8, and detects the ascending / descending position of the second weight body 12. The detection of the position of the second weight 12 is because the second weight 12 is clamped to the test rod 16 when testing, as will be described later. The distance will be detected.
[0022]
Next, the test apparatus A of the self-propelled testing machine 1 will be described. FIG. 3 is a cross-sectional view showing the test apparatus A. This figure shows a state in which all the weight bodies are supported by the first weight body 11 and supported by the wire 9, and shows an initial stage state in which no load is applied to the test rod 16.
[0023]
That is, the fourth weight body 14 is directly attached to the L-shaped protruding portion 11 a of the first weight body 11, and the stay portion 13 a attached to the third weight body 13 is the third weight body 13. Is supported through. The second weight body 12 is placed on the fourth weight body 14. The third weight body 13 is a motor in the embodiment, but is engaged with the second weight body 12 via a shaft body 13b of the motor so as to be movable in the vertical direction. Further, an engaging portion 12 a is provided at the end of the second weight body 12. Although not shown, a wire 18 is attached to the engaging portion 12a.
[0024]
As described above, the vertical measuring position of the second weight body 12 is detected by the linear measuring device 19 provided at the upper end of the wire 18. Each time the second weight body 12 penetrates the ground, the depth of the ground from the tip of the screw point 17 is measured. As will be described later, the engaging portion 12a is an engaging portion when the first weight body 11 is engaged with the second weight body 12 to form a fourth weight. The test rod 16 passes through the central portions of the second weight body 12 and the fourth weight body 14.
[0025]
Further, a clamping means 20 for clamping the second weight body 12 to the test rod 16 is provided on the upper portion of the second weight body 12. The clamp means 20 is rotatable while being supported by the second weight body 12. A sprocket 23 is rotatably supported in the second weight body 12. Clamp means 20 is inserted into the inner diameter portion of the sprocket 23 through a key.
[0026]
FIG. 4 shows a state in which the second weight body 12 is clamped to the test rod 16 by the clamping means 20. At this time, the first weight body 11 is separated from the second weight body 12 and does not support the second weight body 12. However, the third weight body 13 and the fourth weight body 14 are supported by the protruding portion 11a. That is, in the third weight body 13, the shaft body 13 b slides relative to the second weight body 12 to move away from the second weight body 12, and the fourth weight body 14 directly contacts the first weight body 11. The second weight 12 is separated while being supported.
[0027]
As a result, only the second weight body 12 is loaded on the test rod 16 to constitute the first weight. FIG. 5 shows the progress from the state of FIG. That is, the first weight body 11 is further away from the second weight body 12, and the third weight body 13 is engaged with the second weight body 12 via the shaft body 13b. The shaft end flange 13c of the shaft body 13b is caught by the second weight body 12 so as not to move downward.
[0028]
The shaft body 13b is provided with two keys 13d. On the other hand, a sprocket 24 is rotatably supported on the second weight body 12. A shaft body 13b is inserted into the inner diameter portion of the sprocket 24 through a key 13d so that the shaft body 13b can move in the axial direction. Since the shaft body 13b is directly used without providing a dedicated member for the relative movement of the third weight body 13 with respect to the second weight body 12, the structure is simple. Since the chain 25 is engaged with the sprocket 24 and this chain 25 is engaged with the sprocket 23, the rotational drive from the motor 13, which is the third weight body, is transmitted via the sprocket 24 and the chain 25. It is transmitted to the sprocket 23.
[0029]
This rotational drive operates when the test rod 16 does not penetrate and requires rotation.
[0030]
When the shaft end collar 13 c is engaged with the second weight body 12, the first weight body 11 is separated from the third weight body 13. The fourth weight body 14 descends while being supported by the first weight body 11. As a result, the third weight body 13 is integrated with the second weight body 12 and loaded on the test rod 16 to form a second weight.
[0031]
FIG. 6 shows that the first weight body 11 further moves downward and the fourth weight body 14 is engaged with the second weight body 12. An engagement rod 21 is attached to the second weight body 12. The engagement rod 21 extends downward, and the tip thereof is a flange portion 21a.
[0032]
When the first weight body 11 moves downward and leaves, the fourth weight body 14 is also lowered, but is locked by the flange portion 21a of the engagement rod 21. As a result, only the first weight body 11 is separated from the second weight body 12. As a result, the third weight body 13 and the fourth weight body 14 together with the second weight body 12 are loaded onto the test rod 16 to form a third weight.
[0033]
FIG. 7 shows a state where the first weight body 11 is further lowered and comes into contact with the second weight body 12. That is, the stay 22 attached to the upper portion of the first weight body 11 is locked to the upper surface of the engaging portion 12 a of the second weight body 12. As a result, in addition to the third weight body 13 and the fourth weight body 14, the first weight body 11 is also loaded together with the second weight body 12 onto the test rod 16 to form the fourth weight. To do.
[0034]
After the second weight body 12 is clamped to the test rod 16 in this way, the first weight body 11 is lowered stepwise, so that four weights can be configured. FIG. 8 is an explanatory view showing each weight body in an exploded manner, and shows the transition of the weight structure in stages.
[0035]
When the first weight is added only by the second weight body 12, the third weight body 13 is added to the second weight body 12, the second weight is added to the second weight body 12, and the third weight body is added to the second weight body 12. 13 and the fourth weight 14 are added to the third weight, and when all four weights are loaded to the test rod 16, the fourth weight is formed.
[0036]
Next, the test method will be described. The Swedish sounding test method is defined in JIS A1221, and is well known, but the outline is as follows. In this method, a screw point is attached to the tip of the test rod, and it is vertically supported at the target survey point.
[0037]
Check whether or not the test rod penetrates into the ground in this state, and if so, record the amount of penetration relative to the load. When penetrating, record the amount of penetration against the load and repeat the operation. When penetration stops at a load of 100 kg, record the number of half revolutions required to penetrate to the next test rod graduation line (25 cm).
[0038]
In the case of the present invention, four load stages can be set, and more detailed data than JIS regulations can be recorded. FIG. 9 shows a control block diagram of the testing machine relating to the present invention. Reference numeral 31 denotes a power source, 32 denotes a power control panel, earth leakage circuit breaker, contactor, 33 denotes a motor with a brake for driving a winch, 34 denotes an SQ board, a switch, a touch panel, and 35 denotes a linear encoder and a proximity switch.
[0039]
Signals are mutually exchanged by the operation of the testing machine, but since it is not directly related to the present invention, detailed description of this control block diagram is omitted. The test operation is performed by the touch panel 34. Next, the operation will be briefly described. FIG. 10 shows the menu display contents of the touch panel 34.
[0040]
For example, when “Help” is pressed, the content of the help is displayed. For example, “Test preparation method” of the displayed content is pressed, the outrigger is set, the leader is raised, and the linear encoder cable is set. When the “Test” button is pressed, And station No. Will be displayed, so the test will be repeated one after another, such as pressing the confirm button after selection.
[0041]
As described above, the present invention performs a test operation using the touch panel, accumulates data, and automatically graphs the N value. These data can also be imported into a personal computer. Based on such an operation, the test of the present invention is performed as follows. When the measurement point of the target ground is determined by self-running, the test rod 16 is set vertically on the ground, and the test apparatus A that supports all the weights by the first weight body 11 is brought to the top of the reader.
[0042]
Next, the second weight body 12 is clamped to the test rod 16. Subsequently, the first weight body 11 is lowered to a first weight (load) state, and the test rod 16 penetrates into the ground. If penetration proceeds only by load, not rotational penetration, record the magnitude of the load and the penetration depth from the surface of the screw point tip.
[0043]
If not penetrating, then the first weight 11 is further lowered, the third weight 13 is engaged with the second weight 12, the test rod 16 is penetrated as the second weight, and the above operation is repeated. As for the data obtained by this operation, the detection result is input to the control device by the detection device and automatically recorded.
[0044]
Similarly, when not penetrating, the first weight body 11 is further lowered, and the fourth weight body 14 is engaged with the second weight body 12 so as to penetrate as the third weight body. When not penetrating further, the first weight body 11 is engaged with the second weight body 12 to penetrate as a fourth weight. This gradual penetration is based on the measuring control of the gauge body 15. When penetrating the fourth weight, the wire 9 supporting the first weight body 11 is slackened.
[0045]
When penetration proceeds by rotation at a load of 100 kg, the penetration depth after penetration corresponding to the half rotation number (Na) is recorded, and the penetration amount (L) at that time is calculated. Next, the Na value corresponding to L is converted into half rotation speed Nsw per 1 m penetration amount and recorded by the following equation. For example, when L is 25 cm, Nsw = 4Na. The test results are automatically illustrated by the above-described operation, with the vertical axis representing the depth D from the ground surface and the horizontal axis representing the load magnitude Wsw and the half rotation speed Nsw per meter of penetration.
[0046]
This display can also indicate the degree of hardness of the ground by color. The N value is calculated as follows. The N value in the case of cohesive soil is 0.03 Wsw + 0.05 Nsw, and the N value in the case of sandy soil is 0.02 Wsw + 0.067 Nsw.
Such a test operation is performed on each target ground, and data covering the details is collected. In the case of the self-propelled type, since the operation efficiency is better than the manual type, a large amount of data can be collected.
As mentioned above, although the Example of this invention was described as a test device of a Swedish type sounding self-propelled testing machine, the present invention is not limited to the structure of this example.
[0047]
【The invention's effect】
As described above, since the present invention is configured to include four weights, the stability of the load system can be achieved, and the cost can be reduced by simplification. In addition, by simplifying the test method, the test time and test continuation time will be shortened and the test efficiency of the soft ground will be increased. Furthermore, the four-body weight configuration can subdivide the test interval and enable more accurate testing. became.
[Brief description of the drawings]
FIG. 1 is a front view showing an entire self-propelled testing machine according to the present invention.
FIG. 2 is a side view of FIG. 1;
FIG. 3 is an overall view showing a test apparatus according to the present invention, and shows a state in which weights are gathered.
FIG. 4 is an overall view showing a test apparatus according to the present invention, and shows a first weight configuration.
FIG. 5 is an overall view showing a test apparatus according to the present invention, and shows a second weight configuration.
FIG. 6 is an overall view showing a test apparatus according to the present invention, and shows a third weight configuration.
FIG. 7 is an overall view showing a test apparatus according to the present invention, and shows a fourth weight configuration.
FIG. 8 is an exploded view showing a weight body of the test apparatus.
FIG. 9 is a control block diagram of a self-propelled testing machine according to the present invention.
FIG. 10 is a diagram showing a menu on a touch panel.
[Explanation of symbols]
A ... Test device 1 ... Self-propelled tester 2 ... Main body 6 ... Generator unit 7 ... Leader 9 ... Wire 10 ... Winch device 11 ... First weight body 12 ... Second weight body 13 ... Third weight body 13b ... shaft body 14 ... fourth weight body 15 ... gauge body 16 ... test rod 17 ... screw point 19 ... linear measuring instrument (detection device)
20 ... Clamping means 21 ... Engaging rods 23, 24 ... Sprocket

Claims (6)

A self-propelled testing machine for testing by inserting a test rod into the ground,
An elevator installed in the self-propelled testing machine for raising and lowering the weight body;
A first weight that is raised and lowered by the elevator;
A second weight body, a third weight body, and a fourth weight body that can be supported by their own weight and move relative to each other on the first weight body ;
Wire means for connecting the first weight body and the elevator;
A gauge body interposed between the first weight body and the wire means for setting a relative lifting distance of the first weight body and the second weight body ;
A clamping means included in the second weight body for clamping the test rod, and a rotary drive device for applying a rotational drive force to the test rod;
A position detection device provided between the gauge body and the second weight body for measuring a relative lifting distance between the gauge body and the second weight body;
After the test rod is fixed to the clamping means of the second weight body, the second weight is moved to the test rod when the first weight body is lowered and separated from the second weight body. A first weight to which only the weight of the weight of the weight is added is configured,
When the first weight is further lowered, the first vertical body is separated from the third weight body, and the third vertical body is engaged with the second weight body by its own weight. A second weight in which the weight of the second weight body and the third weight body is added to the rod is configured;
When the first weight is further lowered, the first vertical body is separated from the fourth weight, and the fourth weight is engaged with the second weight by its own weight. A third weight in which the weight of the second weight body, the third weight body, and the fourth weight body are added to the test rod is configured;
When the first weight body is further lowered by one stage, a stay provided on the first weight body engages with the second weight body, and the second weight body, A test apparatus for a self-propelled testing machine , comprising a third weight, a fourth weight to which the weights of the fourth weight and the first weight are added . 2. The self-propelled testing machine according to claim 1, wherein the fourth weight body is engaged with an engagement rod fixed to the second weight body and is suspended by its own weight. Testing machine tester.   2. The testing apparatus for a self-propelled testing machine according to claim 1, wherein the clamping means is rotatably provided on the second weight body.   2. The test apparatus for a self-propelled testing machine according to claim 1, further comprising a control device for recording, calculating, and displaying a test result.   2. The self-propelled testing machine testing apparatus according to claim 1, wherein the third weight body is a motor, and a shaft portion of the third weight body is engaged with the second weight body so as to be capable of relative movement in the up-and-down direction. A self-propelled testing machine testing device. 6. The test apparatus for a self-propelled testing machine according to claim 5 , wherein the rotation driving means is formed by connecting a sprocket provided on the second weight body and a sprocket provided on a motor of the third weight body. A self-propelled testing machine testing device characterized by being provided .

Images