Auxiliary equipment for sensor installation of an automatic permafrost monitoring instrument

Abstract

This application relates to the field of automatic frozen soil monitoring technology, and discloses an auxiliary device for installing sensors of an automatic frozen soil monitoring instrument. By setting up a hollow tube, a filling hopper, and a hammer, and opening a discharge port at the bottom of the hollow tube, prepared fine soil can be added from the filling hopper and guided into the gap between the ground hole and the outer casing, effectively preventing the fine soil from spilling. Through the coordinated arrangement of an elastic reset component, a handle, a mounting block, and a guide rod, the handle can drive the guide rod downwards, allowing the fine soil in the hollow tube to flow smoothly out, avoiding blockage. The auxiliary device for installing sensors of the automatic frozen soil monitoring instrument disclosed in this application is convenient and easy to operate. The operator can simultaneously complete the two steps of fine soil introduction and compaction while continuously pressing down the handle. The fine soil is introduced and compacted gradually, effectively ensuring the density of the backfill and thus ensuring the accuracy of automatic frozen soil monitoring.

Description

Technical Field

[0001] This application relates to the field of automatic permafrost monitoring technology, specifically to an auxiliary device for installing sensors in an automatic permafrost monitoring instrument. Background Technology

[0002] Currently, the installation of sensors for automatic permafrost monitoring instruments generally adopts the "drilling method," and the standard procedure is as follows: First, drill a hole in the ground with a diameter slightly larger than the outer casing of the permafrost monitoring instrument (usually a standard φ40mm PVC pipe) and a depth consistent with the designed observation depth; then, insert the outer casing vertically into the hole; finally, fill the annular gap between the outer casing and the hole wall with fine soil and compact it to fix the outer casing and prevent it from sinking due to its own weight, soil disturbance, or freeze-thaw cycles, thus ensuring the long-term stability and verticality of the internal sensor string.

[0003] Current technology lacks specialized tools, so construction workers typically use small shovels to fill the soil and then compact it with long sticks. To ensure the compaction of the backfill, the principle of "layered backfilling and layer-by-layer compaction" must be followed. This means that only a small amount of fine soil (about 10-15cm thick) is filled in each time, and then it must be repeatedly and evenly compacted with a tamping rod before proceeding to the next layer. For a borehole several meters deep or even deeper, this process needs to be repeated dozens of times, which is not only labor-intensive and time-consuming, but also extremely inefficient. Furthermore, manual compaction makes it difficult to ensure consistent force with each tamping, resulting in uneven compaction and problems such as the sinking of the outer casing. In particular, uneven backfilling can cause differences in the thermal conductivity between the backfill material and the native soil. Especially in areas where compaction is not dense and air gaps exist, this can alter the natural distribution of the ground temperature field, forming "thermal bridges" or "cold bridges," interfering with the sensor's measurement of the true ground temperature and introducing systematic errors. Utility Model Content

[0004] In view of the above problems, this application provides an auxiliary device for installing sensors of an automatic permafrost monitoring instrument, which can efficiently and conveniently complete the backfilling and compaction operation, thereby avoiding the sinking of the outer casing and reducing system errors.

[0005] According to one aspect of the embodiments of this application, an auxiliary device for installing sensors of an automatic frozen soil monitoring instrument is provided. The auxiliary device includes a vertically arranged hollow tube, with a funnel-shaped filling hopper connected to the top end of the hollow tube, and a cylindrical striking hammer connected to the bottom end of the hollow tube. The top end of the striking hammer tapers upward to form a frustum-shaped slope. At least one discharge port is provided on one side of the bottom end of the hollow tube. A soil-retaining plate is inclinedly arranged on the inner bottom wall of the hollow tube, with the lower end of the soil-retaining plate flush with and abutting against the lower side wall of the discharge port. An installation block is fixed to the outer periphery of the top end of the hollow tube, and a handle is vertically slidably arranged on the installation block. An elastic reset component is provided between the handle and the installation block. A guide rod is provided at the top end of the handle, extending upward and then bending downward to be inserted into the hollow tube by the filling hopper.

[0006] In some embodiments, the mounting block has a strip groove on the side near the handle, the elastic reset assembly includes a mounting rod fixed vertically in the strip groove, a spring is sleeved on the bottom outer periphery of the mounting rod, a sliding block is sleeved on the top outer periphery of the mounting rod, the handle is connected to the side of the sliding block away from the hollow tube, two wing plates are connected to both sides of the sliding block, multiple slide rails are provided on the wing plates, and multiple slide grooves matching the slide rails are opened on opposite sides of the mounting block.

[0007] In some embodiments, a top cover is fixed to the mounting block above the strip groove by screws, and the top cover has a reserved hole for the mounting rod to pass through.

[0008] In some embodiments, the mounting block is provided with a vertical circular hole for the hollow tube to pass through, and the side wall of the mounting block is provided with a horizontal threaded hole that extends into the circular hole. A hand-tightening bolt is screwed into the threaded hole, and one end of the hand-tightening bolt extends into the circular hole and abuts against the outer side wall of the hollow tube.

[0009] In some embodiments, a threaded rod is coaxially disposed below the hollow tube, and the top of the hammer is provided with a threaded groove that matches the threaded rod.

[0010] In some embodiments, there are multiple discharge ports, which are staggered in multiple directions of the hollow tube.

[0011] The beneficial effects of this application are: 1. By setting up a hollow tube, a filling hopper, and a hammer, and opening a discharge port at the bottom of the hollow tube, the prepared fine soil can be added from the filling hopper and guided to the gap between the ground hole and the outer sleeve, which can effectively prevent the fine soil from spilling. In addition, the fine soil can be directly introduced into the root of the hole in this application, which can effectively avoid the formation of voids and hollow areas in the fine soil compared to the method of filling with a shovel.

[0012] 2. By setting up the elastic reset component, handle, mounting block and guide rod to work together, the operator can ensure that during each pressing down, on the one hand, the handle can drive the guide rod to move down, so that the fine soil in the hollow tube can be smoothly discharged and blockage can be avoided. On the other hand, each pressing down will compress the elastic reset component. When the elastic element is compressed to a consistent length, the compaction force of each hammer blow can be ensured to be consistent.

[0013] 3. In summary, the auxiliary equipment for sensor installation of the automatic frozen soil monitoring instrument presented in this application is convenient and easy to operate. The operator can complete the two steps of fine soil introduction and compaction simultaneously while continuously pressing down the handle. Moreover, the fine soil is introduced and compacted step by step, which can effectively ensure the compaction of fine soil backfill.

[0014] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0015] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the device provided in the embodiments of this application; Figure 2 This is a partially enlarged structural diagram of the upper part of the device provided in an embodiment of this application; Figure 3 A partial structural diagram of the hollow tube and the hammer provided in an embodiment of this application; Figure 4 This is a partial exploded structural diagram of the mounting block and its connecting components provided in the embodiments of this application.

[0016] The reference numerals in the detailed embodiments are as follows: Auxiliary equipment for sensor installation of automatic frozen soil monitoring instrument 100, hollow tube 110, discharge port 111, retaining plate 112, threaded rod 113, filling hopper 120, hammer 130, slope 131, threaded groove 132, mounting block 140, strip groove 141, slide 142, top cover 143, reserved hole 143a, circular hole 144, hand-tightening bolt 145, handle 150, elastic reset assembly 160, mounting rod 161, spring 162, sliding block 163, wing plate 164, slide rail 164a, guide rod 170. Detailed Implementation

[0017] The embodiments of the technical solution of this application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of this application, and are therefore merely examples and should not be used to limit the scope of protection of this application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and the foregoing description of the accompanying drawings are intended to cover non-exclusive inclusion.

[0018] For details, please refer to Figures 1 to 4 , Figure 1 This is a schematic diagram of the overall structure of the device provided in an embodiment of this application. Figure 2 This is a partially enlarged schematic diagram of the upper part of the device provided in an embodiment of this application. Figure 3 This is a partial structural diagram of the hollow tube and the hammer provided in an embodiment of this application. Figure 4This is a partially exploded structural diagram of the mounting block and its connecting components provided in the embodiments of this application. The auxiliary equipment 100 for installing the sensor of the automatic frozen soil monitoring instrument includes a vertically arranged hollow tube 110. The hollow tube 110 is used for drainage, allowing fine soil to be injected into the gap between the borehole and the sensor. The cross-sectional dimensions of the suction tube can be 10-13 mm. A funnel-shaped filling hopper 120 is connected to the top of the hollow tube 110, through which fine soil can be added to the hollow tube 110. A cylindrical hammer 130 is connected to the bottom of the hollow tube 110, used to compact the fine soil. The top of the hammer 130 tapers upwards to form a frustum-shaped slope 131. At least one outlet 111 is provided on one side of the bottom of the hollow tube 110, through which fine soil is discharged and falls into the slope 131, then slides down the slope into the gap. A soil-retaining plate 112 is inclinedly installed on the inner bottom wall of the hollow tube 110. The lower end of the soil-retaining plate 112 is flush with and abuts against the lower side wall of the discharge port 111. The inclined soil-retaining plate 112 facilitates the rapid discharge of fine soil from the hollow tube 110. An installation block 140 is fixed to the outer periphery of the top end of the hollow tube 110. A handle 150 is vertically slidable on the installation block 140. The handle 150 can slide vertically on the installation block 140. An elastic reset component 160 is provided between the handle 150 and the installation block 140. Each time the handle 150 slides, it compresses the elastic reset component 160. After releasing the handle, the elastic reset component 160 pushes the handle 150 upward to reset. A guide rod 170 is provided at the top of the handle 150. The guide rod 170 extends upward and then bends downward and is inserted into the hollow tube 110 by the filling hopper 120. Each time the handle 150 moves downward, it drives the guide rod 170 to move downward together. Thus, the guide rod 170 can effectively prevent fine soil from blocking the hollow tube 110 during the movement of the hollow tube 110.

[0019] In the operation of this embodiment, a hole with a depth matching the size of the outer casing (which is part of the sensor and is used to protect it) is first drilled in the ground. Sufficient fine soil is prepared and added gradually to the filling hopper 120, with each addition being 1000ml-2000ml (the specific amount added is adjusted according to the borehole diameter and the outer casing diameter, ensuring a backfill depth of 10-15cm). The fine soil can be sieved, dry or slightly moist virgin soil (i.e., the soil taken out during drilling, after removing stones, grass roots, and other debris, and then crushed and sieved). If virgin soil is unsuitable, dry, clean fine sand or specially purchased filling soil can be used. Insert the outer tube into the borehole and keep it basically vertical by hand. Insert the loaded device into the gap between the hole and the outer tube and rotate the device around the outer circumference of the outer tube. During the rotation, continuously press down the handle 150. As the handle 150 is pressed down, it compresses the elastic reset component 160 and drives the guide rod 170 to move in the hollow tube 110. This allows the fine soil in the hollow tube 110 to slide quickly and relatively evenly along the discharge port 111 into the gap between the hole and the outer tube. As the handle 150 is continuously pressed down and lifted, the fine soil will be compacted by the hammer 130.

[0020] In summary, in this embodiment, by setting up a hollow tube 110, a filling hopper 120, and a hammer 130, and opening a discharge port 111 below the hollow tube 110, the prepared fine soil can be added from the filling hopper 120 and guided into the gap between the ground hole and the outer casing, effectively preventing the fine soil from spilling. Furthermore, this embodiment allows the fine soil to be directly introduced into the root of the hole, effectively avoiding voids and air pockets compared to using a shovel for filling. In this embodiment, the elastic reset component 160, handle 150, mounting block 140, and guide rod 170 work together to ensure that during each press, the handle 150 moves the guide rod 170 downwards, allowing the fine soil in the hollow tube 110 to flow smoothly and avoid blockage. Additionally, each press compresses the elastic reset component 160, ensuring consistent compaction force of the hammer 130 each time the elastic element is compressed to the same length. In summary, the auxiliary equipment 100 for sensor installation of the automatic frozen soil monitoring instrument presented in this application is convenient and easy to operate. The operator can complete the two steps of fine soil introduction and compaction simultaneously while continuously pressing down the handle 150. Moreover, the fine soil is introduced and compacted step by step, which can effectively ensure the compaction of fine soil backfill.

[0021] In some embodiments, the mounting block 140 has a strip groove 141 on the side near the handle 150, and the elastic reset assembly 160 includes a mounting rod 161 vertically fixed in the strip groove 141. A spring 162 is sleeved on the outer periphery of the bottom of the mounting rod 161, and a sliding block 163 is sleeved on the outer periphery of the top of the mounting rod 161. The handle 150 is connected to the side of the sliding block 163 away from the hollow tube 110. Two wing plates 164 are connected to both sides of the sliding block 163. Multiple slide rails 164a are provided on the wing plates 164, and multiple slide grooves 142 that match the slide rails 164a are provided on the opposite sides of the mounting block 140. For ease of explanation, this application provides a specific configuration of the mounting block 140, handle 150, and elastic reset assembly 160. During operation, when the operator presses the handle 150, the sliding block 163 will move downward under the limitation of the strip groove 141 and the mounting rod 161, compressing the spring 162. After one impact is completed, the handle 150 is released, and under the action of the spring 162, the handle 150, sliding block 163, and guide rod 170 will synchronously move upward and reset. In this embodiment, the stability of the sliding block 163 during the up-and-down sliding process is effectively ensured by the configuration of the wing plate 164, slide rail 164a, and slide groove 142.

[0022] In some embodiments, a top cover 143 is fixed to the mounting block 140 above the strip groove 141 by screws. The top cover 143 has a reserved hole 143a for the mounting rod 161 to pass through. In this embodiment, during installation, the hollow tube 110 and the mounting block 140 are first connected, the spring 162 is sleeved on the outside of the mounting rod 161, then the slide rail 164a on the wing plate 164 is aligned with the slide groove 142 on the mounting block 140, the sliding block 163 is inserted into the strip groove 141 from top to bottom, and finally the top cover 143 is fixed to the mounting block 140 by screws.

[0023] In some embodiments, the mounting block 140 has a vertically arranged circular hole 144 for the hollow tube 110 to pass through, and a horizontally arranged threaded hole extending into the circular hole 144 is provided on the side wall of the mounting block 140. A hand-tightening bolt 145 is screwed into the threaded hole, and one end of the hand-tightening bolt 145 extends into the circular hole 144 and abuts against the outer side wall of the hollow tube 110. In this embodiment, during operation, the hollow tube 110 can be passed through the circular hole 144 on the mounting block 140 from top to bottom, and then fixed by the hand-tightening bolt 145 against the outer side wall of the hollow tube 110.

[0024] In some embodiments, a threaded rod 113 is coaxially disposed below the hollow tube 110, and a threaded groove 132 matching the threaded rod 113 is formed at the top of the hammer 130. In this embodiment, the hollow tube 110 and the hammer 130 can be connected by threads. The cross-sectional diameter of the hammer 130 is slightly larger than that of the hollow tube 110. By setting it to be detachable as described above, it is convenient for the hollow tube 110 and the hammer 130 to be disassembled and then pass through the circular hole 144 on the mounting block 140 from top to bottom to complete the connection.

[0025] In some embodiments, there are multiple discharge ports 111, which are staggered in multiple directions of the hollow tube 110. In this embodiment, the discharge speed is further improved by providing multiple discharge ports 111.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although the foregoing embodiments have provided a detailed description of this application, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An auxiliary device for sensor installation of a frozen ground automatic observation instrument, characterized by, The device includes a vertically arranged hollow tube, the top of which is connected to a funnel-shaped filling hopper, and the bottom of which is connected to a cylindrical hammer. The top of the hammer tapers upward to form a frustum-shaped slope. At least one discharge port is provided on one side of the bottom of the hollow tube. A retaining plate is inclinedly provided on the inner bottom wall of the hollow tube, and the lower end of the retaining plate is flush with and abuts against the side wall of the lower side of the discharge port. An installation block is fixed to the outer periphery of the top end of the hollow tube. A handle is vertically slidably provided on the installation block. An elastic reset component is provided between the handle and the installation block. A guide rod is provided at the top end of the handle. The guide rod extends upward and then bends downward and is inserted into the hollow tube by the filling hopper.

2. The frozen ground automatic observation instrument sensor mounting auxiliary device according to claim 1, characterized by, The mounting block has a slotted groove on the side near the handle. The elastic reset assembly includes a mounting rod fixed vertically in the slotted groove. A spring is sleeved on the outer periphery of the bottom of the mounting rod, and a sliding block is sleeved on the outer periphery of the top of the mounting rod. The handle is connected to the side of the sliding block away from the hollow tube. Two wing plates are connected to both sides of the sliding block. Multiple slide rails are provided on the wing plates. Multiple grooves matching the slide rails are provided on the opposite sides of the mounting block.

3. The frozen ground automatic observation instrument sensor mounting auxiliary device according to claim 2, characterized by, The mounting block is located above the strip groove and is fixed with a top cover by screws. The top cover has a reserved hole for the mounting rod to pass through.

4. The frozen ground automatic observation instrument sensor mounting auxiliary device according to claim 1, characterized by, The mounting block has a vertical circular hole for the hollow tube to pass through, and a threaded hole extending into the circular hole is provided horizontally on the side wall of the mounting block. A hand-tightening bolt is screwed into the threaded hole, and one end of the hand-tightening bolt extends into the circular hole and abuts against the outer side wall of the hollow tube.

5. The frozen ground automatic observation instrument sensor mounting auxiliary device according to claim 1, characterized by, A threaded rod is coaxially arranged below the hollow tube, and a threaded groove matching the threaded rod is opened at the top of the hammer.

6. The frozen ground automatic observation instrument sensor mounting auxiliary device according to claim 1, characterized by, There are multiple discharge ports, which are staggered and arranged in multiple directions of the hollow tube.

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