Device for burying soil pressure sensor towards inclined upper hole

Abstract

The utility model provides a device for burying a soil pressure sensor towards an inclined upper hole. Comprising an auxiliary positioning rod connected with a soil pressure sensor and a soil burying device, the soil burying device sequentially comprises a cylindrical sleeve, a dowel bar, a connecting rod and an arc-shaped tray, an L-shaped clamping groove is formed in the cylindrical sleeve to fix a conical clamping needle connected with the dowel bar, and the top of the dowel bar is sleeved with a spiral spring; two ends of the spiral spring are respectively connected with the cylindrical sleeve and the top of the dowel bar; a bottom baffle used for supporting and conveying a soil body is arranged at the bottom end of the connecting rod and one side of the arc-shaped tray, a U-shaped groove is formed in the bottom baffle and located on the open side of the arc-shaped tray, and an annular auxiliary positioning rod channel is formed. The utility model has the beneficial effects that the design is reasonable, and the manufacture is novel; and the device can be widely applied to the fields of soil tests, engineering practice, scientific research and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to geotechnical engineering, surveying technical field, concretely relates to a device of soil pressure sensor is buried to syncline upside hole. BACKGROUND

[0002] Soil pressure sensor is used for measuring stress state in soil body, is widely used in civil engineering field, especially roadbed, foundation pit, retaining wall, dam, tunnel and mine. Soil pressure sensor can measure stress of soil body in these projects, help engineers to analyze stress distribution of soil body, thereby carry out reasonable engineering design and management.

[0003] Although soil pressure sensor has remarkable advantage in measuring soil stress, but also has some shortcomings. In different construction environment, the burying of soil pressure sensor is a challenge, in order to maximize the original state of soil body, prevent the disturbance of excavation process to soil state when using soil pressure sensor to measure soil stress, often bury the hole of soil pressure sensor very small, which leads to many problems in subsequent burying work, if the surrounding soil body is not compacted, there is gap, will lead to error in measured value. Especially when burying soil pressure sensor in syncline upside hole, soil body often loosens and rolls from the hole due to gravity, cannot be in close contact with soil pressure sensor, and when the depth requirement of burying point is higher, the traditional burying method is slightly weak, and the efficiency is low. In addition, soil pressure sensor also needs an auxiliary positioning rod to assist fixation before burying, to prevent soil pressure sensor from being disturbed and position changing during filling process, the existence of auxiliary positioning rod has great influence on subsequent filling work. These shortcomings make the use of soil pressure sensor in some specific working conditions may limit the accuracy of its measurement results, and the burying method needs to be improved for comprehensive analysis. UTILITY MODEL CONTENTS

[0004] In view of the above technical problems, the utility model provides a device of soil pressure sensor is buried to syncline upside hole. Sloping ground opening The device has the advantages of simple operation, low cost, small disturbance to soil body and convenient burying.

[0005] The utility model discloses a technical scheme for achieving the above object is: a device is buried to the soil pressure sensor of syncline upper hole, including with the auxiliary positioning rod of soil pressure sensor connection, burying the device, the burying device includes in proper order: cylindrical sleeve, force transmission rod, connecting rod and arc tray, be equipped with L -shaped clamping slot with the force transmission rod connection's conical clamping needle fixed on the cylindrical sleeve, the top of force transmission rod is covered with spiral spring, and the both ends of spiral spring are connected with the top of force transmission rod respectively;

[0006] The force transmission rod and the connecting rod are connected through threads.

[0007] The force transmission rod is provided with a plurality of elongated force transmission rods.

[0008] The utility model discloses the beneficial effect is: compared with traditional burying method, the device suitability is strong, can adjust the device length in time according to the hole depth, and the operation is convenient and is buried evenly, closely, and the soil gap is small, improves the accuracy of soil pressure sensor determination, reduces the experimental error. The device has the characteristics such as reasonable design, novel production, low cost, simple operation, wide application range, can be widely applied in the field such as soil test, engineering practice, scientific research. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is the whole schematic diagram of the device of the utility model for burying soil pressure sensor to the syncline upper hole.

[0010] Figure 2 It is the sectional view of the device of the utility model for burying soil pressure sensor to the syncline upper hole.

[0011] Figure 3 It is the schematic diagram of the use process of the device of the utility model for burying soil pressure sensor to the syncline upper hole.

[0012] In the drawing:

[0013] 1-cylindrical sleeve 2-spiral spring 3-L-shaped clamping slot

[0014] 4-conical clamping needle 5-force transmission rod 6-connecting rod

[0015] 7-arc tray 8-bottom baffle 9-threaded connection

[0016] 10-auxiliary positioning rod 11-soil pressure sensor DETAILED DESCRIPTION

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0018] The present invention relates to a device for burying an earth pressure sensor at an upward-sloping opening: When burying an earth pressure sensor at an upward-sloping opening, there are often many gaps between the soil and the earth pressure sensor in traditional burying methods, which prevents the soil around the earth pressure sensor from being compacted. Moreover, when the required burial depth is high, traditional burying methods are not only inefficient, but also make it a major problem to send the soil into the depth of the hole, affecting the measurement progress and accuracy.

[0019] like Figures 1 to 3 As shown, this utility model discloses a device for burying a soil pressure sensor at an obliquely upward opening, comprising a cylindrical sleeve 1, a helical spring 2, an L-shaped groove 3, a conical pin 4, a force transmission rod 5, a connecting rod 6, an arc-shaped tray 7, and a bottom baffle 8. The arc-shaped tray 7 is welded to the bottom baffle 8, and the bottom baffle 8 is welded to the bottom end of the connecting rod 6. The end of the connecting rod 6 is threaded for connecting the detachable force transmission rod 5. Both ends of the force transmission rod 5 are threaded for use in extending the device and connecting to the cylindrical sleeve 1. The conical pin 4 is welded to the force transmission rod 5. The cylindrical sleeve 1 has an L-shaped groove 3 on its side and is connected to the top of the force transmission rod 5 via the helical spring 2.

[0020] The arc-shaped tray 7 and the bottom baffle 8 are 3 mm thick, the arc-shaped tray 7 has a radius of 45 mm, the force transmission rod 5 is 1 meter long and has a radius of 5 mm. The whole device can be lengthened by connecting several force transmission rods. The connecting rod 6 is connected to the bottom baffle 8 by welding.

[0021] The cylindrical sleeve 1 has a radius of 10 mm and a length of 1.2 m. It has an L-shaped groove 3 on its side and is connected to the top of the force transmission rod through a helical spring 2.

[0022] The specific implementation steps of this utility model for a device for burying a soil pressure sensor at an obliquely upward opening are as follows:

[0023] (1) Connect the earth pressure sensor to the auxiliary positioning rod and extend it into the pre-embedded point.

[0024] (2) Clear the loose soil around the opening of the tunnel, determine the burial depth of the tunnel opening, and lengthen the dowel rod as needed to meet the burial requirements.

[0025] (3) Squeeze the cylindrical sleeve to compress the spring, and rotate the conical pin to lock it in the L-shaped slot.

[0026] (4) Load the soil to be buried into the arc-shaped tray, lift the device into the opening, and insert the auxiliary positioning rod into the U-shaped groove of the bottom baffle. Slowly advance the burial device. When the device reaches the pre-buried depth, rotate the conical chuck to release the spring force. The soil will pop out of the arc-shaped tray and cover the soil pressure sensor.

[0027] (5) removing the landfill device, repeating steps three and four until the landfill work is completed.

[0028] The specific implementation process of the utility model is described above in combination with the drawings, but the utility model is not limited to the specific implementation mode described above, and the specific implementation mode described above is only illustrative but not restrictive, and the modification, replacement, improvement, etc. made by the ordinary skilled in the art under the inspiration of the utility model without departing from the purpose of the utility model and the scope protected by the claims should be included in the protection scope of the utility model.

Claims

1. A device for burying an earth pressure sensor at an obliquely upward opening, characterized in that: The device includes an auxiliary positioning rod connected to an earth pressure sensor and a soil burying device. The soil burying device includes, in sequence, a cylindrical sleeve (1), a force transmission rod (5), a connecting rod (6), and an arc-shaped tray (7). The cylindrical sleeve (1) is provided with an L-shaped groove (3) to fix the conical caliper (4) connected to the force transmission rod (5). A helical spring (2) is sleeved on the top of the force transmission rod (5). The two ends of the helical spring (2) are respectively connected to the top of the cylindrical sleeve (1) and the top of the force transmission rod (5). The bottom end of the connecting rod (6) and one side of the arc-shaped tray (7) are provided with a bottom baffle (8) for supporting the soil. The bottom baffle (8) is provided with a U-shaped groove and is located on the open side of the arc-shaped tray (7) to form a ring auxiliary positioning rod channel.

2. The soil pressure sensor device for an obliquely upward-facing tunnel entrance as described in claim 1, characterized in that: The top of the force transmission rod (5) is connected to the cylindrical sleeve (1) by a helical spring (2); the force transmission rod (5) is connected to the connecting rod (6) by a thread; the bottom baffle (8) is welded to the bottom end of the connecting rod (6).

3. The soil pressure sensor device for an obliquely upward-facing tunnel entrance as described in claim 2, characterized in that: The force transmission rod (5) is provided with several extended force transmission rods.

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