A device for measuring the internal temperature of frozen soil layer for shield section freezing construction

Abstract

The present invention discloses a device for measuring the internal temperature of a frozen soil layer for shield interval freezing construction, and relates to the field of temperature measurement technology. The present invention comprises a connecting tube, a driving assembly is provided at the bottom of the connecting tube, the driving assembly is used to drive the connecting tube to move up and down, an adjusting tube is fixedly installed at the top of the connecting tube, a fine adjustment assembly is provided inside the adjusting tube, a sleeve is slidingly connected between the inside and the outside of the connecting tube, and a temperature probe is evenly fixedly installed on the periphery of the sleeve. The present invention is convenient for controlling the depth reached, and can also change the original moving trajectory of the roller, which is convenient for avoiding obstacles, improves the applicability of measuring the internal temperature of the frozen soil layer, enables the temperature probe to reach a more accurate measurement depth, and collects multiple sets of data within the specified measurement depth range, and then obtains a more accurate value by taking the average value, thereby improving the accuracy of temperature measurement.

Description

Technical Field

[0001] The invention relates to the technical field of temperature measurement, and in particular to a device for measuring the internal temperature of a frozen soil layer used in shield section freezing construction. Background Art

[0002] During the track excavation process, the use of shield construction is a common tunnel excavation method. During the shield process, complex underground structure environments may be encountered. When facing some existing underground structures, the shield may cause damage to the original underground structures due to large vibrations when passing through. Therefore, the shield section needs to be reinforced during the construction process. The traditional method is to reinforce through grouting. However, considering the comprehensive considerations of construction difficulty, cost-effectiveness, etc., it is more appropriate to use the freezing method for reinforcement. The reinforcement is achieved by freezing the soil layer in the shield section. During the freezing construction process, in order to achieve the ideal cooling state, the internal temperature of the frozen soil layer needs to be measured.

[0003] In the temperature measurement process, it is necessary to first drill a hole in the frozen soil layer, and then send the temperature sensing device to the specified depth to complete the temperature measurement. However, the existing temperature measurement device inside the frozen soil layer has the following defects during use:

[0004] 1. After drilling, the inner wall of the frozen soil layer will be smoother than the soft soil, but there will still be unevenness and some solid protrusions inside, and the traditional temperature probe delivery drive equipment cannot be effectively applied. In addition, the driving wheels of the traditional channel delivery drive equipment are all in a vertical state in the channel. Although the vertically distributed driving wheels can achieve rapid lifting and lowering, it is difficult to accurately control the depth reached. At the same time, the trajectory of the driving wheel moving up and down cannot be changed. When one of the driving wheels encounters obstacles such as protrusions and cannot pass through, it cannot continue to move forward, and thus cannot reach the specified depth.

[0005] 2. Traditional temperature measurement devices can only achieve adjustment at different depths by moving the delivery drive device. Repeatedly operating the drive wheel is not only cumbersome and difficult, but also unable to make more precise adjustments to the measurement depth after reaching the specified depth. It is also not conducive to the collection of multiple sets of data within the specified depth range, so the measurement accuracy needs to be further improved. Summary of the invention

[0006] The purpose of the present invention is to solve the problems that the above-mentioned traditional temperature probe cannot be effectively used in the driving device, it is difficult to accurately control the reached depth, the depth adjustment operation within the specified depth range is cumbersome and difficult, it is not conducive to collecting multiple sets of data, and the measurement accuracy needs to be further improved. The present invention provides a frozen soil layer internal temperature measurement device for shield section freezing construction.

[0007] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0008] A device for measuring the internal temperature of a frozen soil layer for shield section freezing construction, comprising a connecting tube, a driving assembly is arranged at the bottom of the connecting tube, the driving assembly is used to drive the connecting tube to move up and down, an adjusting tube is fixedly installed at the top of the connecting tube, a fine adjustment assembly is arranged inside the adjusting tube, a collar is slidingly connected between the inside and the outside of the connecting tube, temperature probes are evenly fixedly installed on the periphery of the collar, and a connecting column is fixedly installed at the center of the top of the collar;

[0009] The cam is connected to the bottom of the driving cylinder in a limited rotation manner, and a sleeve is evenly fixedly installed on the bottom end of the driving cylinder, and the number of the sleeves is four. A slide cylinder is movably connected inside the sleeve, and the slide cylinder opening faces a side away from the center of the driving cylinder. The slide cylinder is slidably connected to an installation rod in an internal limited sliding manner on a side away from the center of the driving cylinder. A spring 2 is fixedly connected between one end of the installation rod located inside the slide cylinder and an inner wall of the slide cylinder, so that the installation rod and the roller can be elastically retracted to adapt to uneven areas. The installation rod is connected to the roller in a limited rotation manner away from the side of the slide cylinder, and a motor 1 is fixedly installed on one end of the installation rod away from the side of the slide cylinder. The motor 1 is transmission-connected to the roller for driving the roller to rotate. A telescopic adjustment component is arranged below the driving cylinder, and the telescopic adjustment component is used to synchronously adjust the roller to telescopic movement, and then the roller can be telescopically adjusted according to the size of the channel. A steering adjustment component is arranged inside the driving cylinder, and the steering adjustment component is used to synchronously adjust the roller to rotate, so that the roller can spirally enter and change the original movement trajectory of the roller.

[0010] Furthermore, the connecting column upwardly penetrates the top of the connecting tube and the adjusting tube, and the top extends upward to the top of the adjusting tube, and a friction surface is provided at the relative sliding position between the inner side of the top of the connecting tube and the inner side of the adjusting tube and the connecting column, which is used to increase the friction force when the connecting column slides up and down, so that the connecting column and the ring will not slide downward under the action of their own gravity, so that during the adjustment process, the ring and the temperature probe can stay stably by utilizing the friction force between the connecting column and the connecting tube and the inner side of the adjusting tube.

[0011] Furthermore, the telescopic adjustment assembly includes a threaded rod 1, the bottom end of the driving column is limitedly rotatably connected to the threaded rod 1, the bottom end of the threaded rod 1 is fixedly installed with a turning handle for driving the threaded rod 1 to rotate, the outer side of the threaded rod 1 is threadedly connected to a threaded sleeve, the outer side of the slide cylinder is limitedly rotatably connected to the turning sleeve, the bottom of the turning sleeve extends downward to the bottom of the sleeve, and the bottom of the sleeve is provided with a sliding groove for telescopic movement of the turning sleeve, so that the telescopic movement of the turning sleeve can drive the slide cylinder to telescopic movement, and the slide cylinder can also rotate inside the turning sleeve, and a transmission rod is transmission-connected between the threaded sleeve and the turning sleeve, and there are four transmission rods in total, one end of each of which is hinged to the edge of the threaded sleeve, and the other end is hinged to the bottom of the turning sleeve in the four sleeves, so that during the up and down movement of the threaded sleeve, the turning sleeve can be synchronously driven to telescopically move.

[0012] Furthermore, the steering adjustment assembly includes a turntable, a turntable is connected to a side of the sleeve near the center of the driving column in a limited rotation manner, a fixing rod is fixedly installed on one end of the turntable away from the center of the driving column, a gear is fixedly installed on one end of the turntable away from the fixing rod, and a gear is fixedly installed on the other end of the turntable away from the fixing rod. The bottom of the driving column is connected to a gear cylinder in a limited rotation manner, the teeth of the gear cylinder face downward, and a gear ring is fixedly installed on the bottom end of the gear cylinder, and the side of the gear ring inside the driving column is connected to a threaded rod 2 in a limited rotation manner, and the threaded rod 2 is meshed with the gear ring, so that the rotation of the threaded rod 2 can drive the gear ring and the gear cylinder to rotate, and a motor 2 is fixedly installed on the side end of the driving column, and the motor 2 is transmission-connected to the threaded rod 2 for driving the threaded rod 2 to rotate.

[0013] Furthermore, the number of fixed rods fixedly installed on the side end of a single turntable is three, and they are evenly distributed in the upper half of the side of the turntable. The fixed rods penetrate the side walls of the slide cylinder and are relatively slidably connected to the slide cylinder, so that during the rotation of the turntable, the slide cylinder can be driven by the fixed rods to rotate a total of one hundred and eighty degrees on both sides.

[0014] Furthermore, the gear is located outside the sleeve on one side close to the center of the driving column, and the edge of the gear extends upward to the inside of the driving column. The gears are meshed with the teeth at the bottom of the gear cylinder, so that during the rotation of the gear cylinder, the gears can be driven to rotate synchronously.

[0015] Furthermore, the fine adjustment component includes a cone cylinder, the adjusting cylinder is slidably connected to the inside of the cone cylinder, the cone block is slidably connected to the inside of the cone cylinder, the upper part of the cone cylinder is transmission-connected to a support plate, a spring three is fixedly connected between the top of the cone block and the support plate, and the bottom of the cone block is movably connected to an extrusion ball.

[0016] Furthermore, a transmission assembly is provided between the top of the support plate and the bottom of the cone cylinder, which is used to adjust the support plate up and down in the cone cylinder. The squeezing force of the spring three on the cone block is changed by adjusting the support plate up and down.

[0017] Furthermore, the inner wall of the bottom of the cone cylinder and the bottom edge of the cone block are conical surfaces with a diameter gradually decreasing from top to bottom. When the cone block moves downward in the cone cylinder, the cone surface design can push the extrusion ball to move inward, and an arc groove adapted to the extrusion ball is provided on the side of the connecting column where it is aligned with the extrusion ball. Therefore, when the cone block moves downward in the cone cylinder, the extrusion friction force of the extrusion ball relative to the connecting column will increase. Conversely, when the cone block moves upward in the cone cylinder, the extrusion friction force of the extrusion ball relative to the connecting column will decrease.

[0018] Furthermore, a spring is fixedly connected between the bottom end of the edge of the cone cylinder and the bottom end of the inner cavity of the adjusting cylinder, a connecting rod is fixedly installed on the top end of the edge of the cone cylinder, the connecting rod passes through the adjusting cylinder upward, and a pulling rope is fixedly connected to the bottom end of the connecting rod, the cone cylinder is pulled upward by the pulling rope, and after being released, the cone cylinder is pulled downward by the spring.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. The present invention, through the coordinated design of the connecting tube and the driving component, can drive the temperature probe on the connecting tube to reach the specified measuring depth area, and overcome the unevenness in the channel. At the same time, by utilizing the design of the telescopic adjustment component, the roller can be synchronously telescopically moved to adapt to channels of different aperture sizes. At the same time, by utilizing the design of the steering adjustment component, the roller can be synchronously rotated to achieve spiral entry, which is convenient for controlling the reaching depth and can also change the original moving trajectory of the roller to avoid obstacles, so as to drive the temperature probe to move better in the channel, thereby improving the applicability of temperature measurement inside the frozen soil layer.

[0021] 2. The present invention, through the cooperation of the fine adjustment component and the connecting column, after the connecting tube reaches the specified depth area, the depth of the temperature probe can be further adjusted by pulling the pulling rope to make the temperature probe reach a more accurate measurement depth. After completing a measurement, the temperature probe can be repeatedly driven upward to collect multiple groups of data within the specified measurement depth range, and then a more accurate value can be obtained by taking the average value, thereby improving the accuracy of temperature measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 2 It is a schematic diagram of a partial three-dimensional structure of the present invention;

[0024] Figure 3 It is a schematic diagram of a partially cutaway three-dimensional structure of the present invention;

[0025] Figure 4 It is a schematic diagram of the internal three-dimensional structure of the connecting tube of the present invention;

[0026] Figure 5 The three-dimensional structure of the drive assembly of the present invention is shown in FIG. Figure 1 ;

[0027] Figure 6 The three-dimensional structure of the drive assembly of the present invention is shown in FIG. Figure 2 ;

[0028] Figure 7 The three-dimensional structure of the drive assembly of the present invention is shown in FIG. Figure 3 ;

[0029] Figure 8 It is a schematic diagram of the cross-sectional three-dimensional structure of the drive assembly of the present invention;

[0030] Fig. 9 It is a schematic diagram of a partially cutaway three-dimensional structure of a driving assembly of the present invention;

[0031] Fig.10 It is a schematic diagram of the three-dimensional structure of the rear drive assembly after the roller rotates of the present invention;

[0032] Fig.11 The three-dimensional structure diagram of the partial cross-section of the fine adjustment component of the present invention Figure 1 ;

[0033] Fig.12 The three-dimensional structure diagram of the partial cross-section of the fine adjustment component of the present invention Figure 2 .

[0034] : Illustration numerals: 1. connecting cylinder; 2. driving assembly; 21. driving column; 22. sleeve; 23. sliding cylinder; 24. mounting rod; 25. spring two; 26. roller; 27. motor one; 28. telescopic adjustment assembly; 281. threaded rod one; 282. turning handle; 283. threaded sleeve; 284. turning sleeve; 285. transmission rod; 29. ​​steering adjustment assembly; 291. turntable; 292. fixing rod; 293. gear; 294. gear cylinder; 295. gear ring; 296. threaded rod two; 297. motor two; 3. adjusting cylinder; 4. fine adjustment assembly; 41. cone cylinder; 42. cone block; 43. support plate; 44. spring three; 45. squeezing ball; 5. spring one; 6. collar; 7. temperature probe; 8. connecting cylinder; 9. connecting rod; 10. pulling rope. DETAILED DESCRIPTION

[0035] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0036] A device for measuring the internal temperature of a frozen soil layer for shield tunneling interval freezing construction according to a preferred embodiment of the present invention will be described in detail below. Figure 1-Figure 3 As shown, a device for measuring the internal temperature of frozen soil layer for shield section freezing construction includes a connecting tube 1, a driving assembly 2 is arranged at the bottom of the connecting tube 1, the driving assembly 2 is used to drive the connecting tube 1 to move up and down, an adjusting tube 3 is fixedly installed on the top of the connecting tube 1, a fine adjustment assembly 4 is arranged inside the adjusting tube 3, a collar 6 is slidingly connected between the inside and the outside of the connecting tube 1, temperature probes 7 are evenly fixedly installed on the periphery of the collar 6, and a connecting column 8 is fixedly installed in the center of the top of the collar 6.

[0037] When temperature measurement is required, the driving component 2 is placed downward in the drilled hole, and the connecting tube 1 and the adjusting tube 3 are driven by the driving component 2 to enter the specified depth area in the hole, and then the position of the ring 6 and the temperature probe 7 is further adjusted by the fine adjustment component 4, so that the temperature probe 7 can reach the specified depth more accurately to complete the temperature measurement of the specified depth inside the frozen soil layer.

[0038] like Figure 5-Figure 10 As shown, the driving assembly 2 includes a driving column 21, and the bottom of the connecting cylinder 1 is rotatably connected to the driving column 21, and the bottom end of the driving column 21 is evenly fixedly installed with a sleeve 22, and the number of the sleeves 22 is four. The sleeve 22 is movably connected with a slide cylinder 23 inside. The slide cylinder 23 opens toward a side away from the center of the driving column 21, and the slide cylinder 23 is slidably connected to an installation rod 24 inside the side away from the center of the driving column 21. The installation rod 24 is located at one end of the slide cylinder 23 and is fixedly connected to the inner wall of the slide cylinder 23 with a spring 25, so that the installation rod 24 and the roller 26 can be elastically retracted to adapt to uneven areas, and the installation rod 24 is away from the slide cylinder. A roller 26 is connected to one side of the cylinder 23 for limited rotation, and a motor 27 is fixedly installed on one end of the mounting rod 24 away from the side of the slide cylinder 23. The motor 27 is transmission-connected to the roller 26 for driving the roller 26 to rotate. A telescopic adjustment component 28 is provided below the driving column 21. The telescopic adjustment component 28 is used to synchronously adjust the roller 26 for telescopic movement, and then the roller 26 can be telescopically adjusted according to the size of the channel. A steering adjustment component 29 is provided inside the driving column 21. The steering adjustment component 29 is used to synchronously adjust the rotation of the roller 26, so that the roller 26 can spirally enter and change the original movement trajectory of the roller 26.

[0039] During the driving process, the motor 1 27 drives the roller 26 to rotate to realize the movement of the driving column 21 in the channel. During the rotation and movement of the roller 26, when facing uneven places, the spring 2 25 allows the mounting rod 24 to drive the roller 26 to elastically expand and contract, thereby ensuring the driving stability.

[0040] When faced with channels with different aperture sizes, the telescopic adjustment component 28 can be used to make the roller 26 move synchronously and telescopically to adapt to channels with different aperture sizes. When the roller 26 encounters an obstacle or approaches a specified depth area, the steering adjustment component 29 can be used to make the mounting rod 24 and the roller 26 tilt and rotate synchronously, and then the roller 26 can be driven to rotate, so that spiral entry can be achieved, which is convenient for controlling the reached depth and can also change the original movement trajectory of the roller 26 to avoid obstacles. After passing through the obstacle, the roller 26 can also be restored to a vertical state.

[0041] Furthermore, the telescopic adjustment assembly 28 includes a threaded rod 281, the bottom end of the driving column 21 is connected to the threaded rod 281 in a limited rotational manner, the bottom end of the threaded rod 281 is fixedly installed with a turning handle 282 for driving the threaded rod 281 to rotate, the outer side of the threaded rod 281 is threadedly connected to a threaded sleeve 283, the outer side of the slide 23 is connected to a rotating sleeve 284 in a limited rotational manner, the bottom of the rotating sleeve 284 extends downward to the bottom of the sleeve 22, and the bottom of the sleeve 22 is provided with a retractable movement of the rotating sleeve 284. The slide groove enables the telescopic movement of the rotating sleeve 284 to drive the slide cylinder 23 to move telescopically, and the slide cylinder 23 can also rotate inside the rotating sleeve 284. A transmission rod 285 is connected between the threaded sleeve 283 and the rotating sleeve 284. There are four transmission rods 285, one end of which is hinged to the edge of the threaded sleeve 283, and the other end is hinged to the bottom of the rotating sleeve 284 in the four sleeves 22. Therefore, when the threaded sleeve 283 moves up and down, it can synchronously drive the rotating sleeve 284 to move telescopically.

[0042] The principle of the telescopic adjustment assembly 28 causing the roller 26 to perform synchronous telescopic movement is as follows:

[0043] The threaded rod 281 is driven to rotate by the turning handle 282. During the rotation of the threaded rod 281, the threaded sleeve 283 is engaged with the threaded rod 281 to drive the threaded sleeve 283 to move up and down. The transmission connection design of the transmission rod 285 between the threaded sleeve 283 and the rotating sleeve 284 can drive the rotating sleeve 284 to move telescopically. Since the rotating sleeve 284 is connected to the outer periphery of the slide 23 by a limited rotation, the slide 23, the mounting rod 24 and the roller 26 can be driven to move telescopically synchronously, so as to realize the adjustment of the position of the roller 26 according to the aperture size of the channel.

[0044] Furthermore, the steering adjustment assembly 29 includes a turntable 291, and the turntable 291 is connected to a side of the sleeve 22 near the center of the driving column 21 in a limited rotation manner. A fixing rod 292 is fixedly installed on one end of the turntable 291 away from the center of the driving column 21, and a gear 293 is fixedly installed on one end of the turntable 291 away from the fixing rod 292. The bottom of the driving column 21 is connected to a gear cylinder 294 in a limited rotation manner, and the teeth of the gear cylinder 294 face downward. A gear ring 295 is fixedly installed on the bottom end of the gear cylinder 294. The side of the gear ring 295 inside the driving column 21 is connected to a threaded rod 296 in a limited rotation manner. The threaded rod 296 is meshed with the gear ring 295, so that the rotation of the threaded rod 296 can drive the gear ring 295 and the gear cylinder 294 to rotate. A motor 297 is fixedly installed on the side end of the driving column 21. The motor 297 is transmission-connected to the threaded rod 296 for driving the threaded rod 296 to rotate.

[0045] There are three fixed rods 292 installed on the side end of a single turntable 291, and they are evenly distributed in the upper half of the side of the turntable 291. The fixed rods 292 penetrate the side walls of the slide 23 and are relatively slidably connected to the slide 23, so that during the rotation of the turntable 291, the slide 23 can be driven by the fixed rods 292 to rotate a total of one hundred and eighty degrees on both sides.

[0046] The gear 293 is located outside the sleeve 22 on one side close to the center of the driving column 21, and the edge of the gear 293 extends upward to the inside of the driving column 21. The gears 293 are meshed with the teeth at the bottom of the gear cylinder 294, so that during the rotation of the gear cylinder 294, the gears 293 can be driven to rotate synchronously.

[0047] The principle of the steering adjustment assembly 29 causing the roller 26 to rotate synchronously is as follows:

[0048] The threaded rod 296 is driven to rotate by the motor 297. During the rotation of the threaded rod 296, the mutual engagement between the threaded rod 296 and the gear ring 295 can drive the gear ring 295 and the gear cylinder 294 to rotate. The mutual engagement between the teeth at the bottom of the gear cylinder 294 and the gear 293 can drive the gear 293 and the turntable 291 to rotate. During the rotation of the turntable 291, the fixed rod 292 can drive the slide 23 to rotate, and then drive the slide 23, the mounting rod 24 and the roller 26 to rotate synchronously, so as to realize the synchronous adjustment of the angle of the roller 26.

[0049] like Figure 3-Figure 4 , Figure 11-Figure 12As shown, the connecting column 8 penetrates the top of the connecting tube 1 and the adjusting tube 3 upwardly, and the top extends upwardly to the top of the adjusting tube 3, and a friction surface is provided at the relative sliding place between the inner side of the top of the connecting tube 1 and the inner side of the adjusting tube 3 and the connecting column 8, which is used to increase the friction force when the connecting column 8 slides up and down, so that the connecting column 8 and the ring 6 will not slide downward under the action of their own gravity, so that during the adjustment process, the friction force between the connecting column 8 and the connecting tube 1 and the inner side of the adjusting tube 3 can be used to ensure that the ring 6 and the temperature probe 7 can stay stably.

[0050] The fine-tuning assembly 4 includes a conical cylinder 41, the adjusting cylinder 3 is internally slidably connected to the conical cylinder 41, the conical cylinder 41 is internally slidably connected to the conical block 42, the upper part of the conical cylinder 41 is transmission-connected to a support plate 43, a spring 44 is fixedly connected between the top of the conical block 42 and the support plate 43, and the bottom of the conical block 42 is internally movably connected to a squeezing ball 45.

[0051] A transmission assembly is provided between the top of the support plate 43 and the bottom of the cone cylinder 41 for adjusting the support plate 43 up and down in the cone cylinder 41. By adjusting the support plate 43 up and down, the squeezing force of the spring three 44 on the cone block 42 can be changed.

[0052] The inner wall at the bottom of the cone cylinder 41 and the bottom edge of the cone block 42 are conical surfaces with a diameter gradually decreasing from top to bottom. When the cone block 42 moves downward in the cone cylinder 41, the cone surface design can push the extrusion ball 45 to move inward, and an arc groove matching the extrusion ball 45 is provided on the side of the connecting column 8 where it is aligned with the extrusion ball 45. Therefore, when the cone block 42 moves downward in the cone cylinder 41, the extrusion friction force of the extrusion ball 45 relative to the connecting column 8 will increase. Conversely, when the cone block 42 moves upward in the cone cylinder 41, the extrusion friction force of the extrusion ball 45 relative to the connecting column 8 will decrease.

[0053] A spring 5 is fixedly connected between the bottom end of the edge of the cone cylinder 41 and the bottom end of the inner cavity of the adjusting cylinder 3. A connecting rod 9 is fixedly installed on the top end of the edge of the cone cylinder 41. The connecting rod 9 penetrates the adjusting cylinder 3 upward, and a pulling rope 10 is fixedly connected to the bottom end of the connecting rod 9. The pulling rope 10 is used to pull the cone cylinder 41 upward, and after being released, the cone cylinder 41 is pulled downward by the spring 5.

[0054] After the connecting tube 1 reaches the specified depth area through the driving component 2, the connecting rod 9 is driven by the pulling rope 10 to drive the cone tube 41 to move upward in the adjusting tube 3. During the upward movement of the cone tube 41, the friction force of the connecting column 8 on the cone block 42 inside the cone tube 41 is downward, so that the cone block 42 is closer to the inner wall of the cone tube 41, and the squeezing ball 45 on the inner wall of the cone block 42 is squeezed inwardly with the connecting column 8. During the upward movement of the cone tube 41, the connecting column 8 can be pulled upward, thereby driving the ring 6 and the temperature probe 7 to move upward on the outside of the connecting tube 1.

[0055] After completing the upward pulling of the ring 6 and the temperature probe 7, the pulling rope 10 is released, and the cone cylinder 41 will move downward under the action of the restoring force of the spring 1 5. In this process, the friction force of the connecting column 8 on the cone block 42 in the cone cylinder 41 is upward, so that the cone block 42 can compress the spring 3 44 upward, thereby reducing the squeezing force of the squeezing ball 45 on the connecting column 8. The friction between the connecting column 8 and the connecting cylinder 1 and the adjusting cylinder 3 will not drive the connecting column 8 to move downward, so that the cone cylinder 41 moves downward again to the bottom of the adjusting cylinder 3, which is convenient for pulling the connecting column 8 up next time, and then the ring 6 and the temperature probe 7 can be repeatedly driven to move upward to fine-tune the position of the temperature probe 7 to reach a more accurate measurement depth. After completing a measurement, the temperature probe 7 can be repeatedly driven to move upward to collect multiple sets of data within the specified measurement depth range, and then a more accurate value can be obtained by taking the average value.

[0056] After the measurement is completed, the connecting tube 1 is taken out using the driving assembly 2 and the pulling rope 10, and the driving ring 6 and the temperature probe 7 can be moved back to the bottom of the connecting tube 1 by pressing the connecting column 8 downward by hand, so as to facilitate the next use.

[0057] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for measuring the internal temperature of a frozen soil layer for shield tunneling section freezing construction, comprising a connecting tube (1), characterized in that: The bottom of the connecting tube (1) is provided with a driving assembly (2), and the driving assembly (2) is used to drive the connecting tube (1) to move up and down. The top of the connecting tube (1) is fixedly mounted with an adjusting tube (3), and the interior of the adjusting tube (3) is provided with a fine adjustment assembly (4). A collar (6) is slidably connected between the interior and the exterior of the connecting tube (1), and a temperature probe (7) is evenly fixedly mounted on the periphery of the collar (6). A connecting column (8) is fixedly mounted at the center of the top of the collar (6), and the connecting column (8) passes through the top of the connecting tube (1) and the adjusting tube (3) upwards. The top end of the connecting tube (3) extends upward to the top of the adjusting tube (3), and a friction surface is provided at the relative sliding position between the inner side of the top of the connecting tube (1) and the inner side of the adjusting tube (3) and the connecting column (8), so as to increase the friction force when the connecting column (8) slides up and down, so that the connecting column (8) and the collar (6) will not slide downward under the action of their own weight. Through the cooperation of the fine adjustment component (4) and the connecting column (8), after the connecting tube (1) reaches the specified depth area, the depth of the temperature probe (7) can be further adjusted to enable the temperature probe (7) to reach a more accurate measurement depth; Wherein, the driving component (2) comprises: A driving column (21), the bottom of the connecting tube (1) being rotationally connected to the driving column (21); Sleeves (22), the bottom ends of the driving columns (21) are evenly and fixedly mounted with sleeves (22), and the number of the sleeves (22) is four; A slide cylinder (23), the sleeve (22) is movably connected to the slide cylinder (23), and the slide cylinder (23) has an opening facing a side away from the center of the driving column (21); A mounting rod (24), the inner limit sliding connection of the slide cylinder (23) away from the center of the driving column (21) is connected to the mounting rod (24); Spring 2 (25), wherein the mounting rod (24) is located inside the slide cylinder (23) and is fixedly connected to the inner wall of the slide cylinder (23) with spring 2 (25); A roller (26), the side of the mounting rod (24) away from the slide cylinder (23) is connected to the roller (26) for limited rotation; Motor 1 (27), wherein the motor 1 (27) is fixedly mounted on one end of the mounting rod (24) away from the slide cylinder (23), and the motor 1 (27) is transmission-connected to the roller (26) for driving the roller (26) to rotate; A telescopic adjustment component (28), wherein a telescopic adjustment component (28) is disposed below the driving column (21), and the telescopic adjustment component (28) is used to synchronously adjust the roller (26) to perform telescopic movement; A steering adjustment component (29), wherein the driving column (21) is provided with a steering adjustment component (29), and the steering adjustment component (29) is used to synchronously adjust the rotation of the roller (26).

2. The device for measuring the internal temperature of the frozen soil layer for shield section freezing construction according to claim 1 is characterized in that: The telescopic adjustment component (28) comprises: A threaded rod (281), the bottom end of the driving column (21) being rotationally connected to the threaded rod (281); A turning handle (282), the bottom end of the threaded rod (281) being fixedly mounted with the turning handle (282); A threaded sleeve (283), wherein the outer side of the threaded rod (281) is threadedly connected to the threaded sleeve (283); A rotating sleeve (284), the outer side of the slide cylinder (23) is connected to the rotating sleeve (284) in a limited rotational manner, the bottom of the rotating sleeve (284) extends downward to the bottom of the sleeve (22), and the bottom of the sleeve (22) is provided with a sliding groove for the rotating sleeve (284) to move telescopically; A transmission rod (285) is provided in transmission connection between the threaded sleeve (283) and the rotating sleeve (284), and there are four transmission rods (285) in total, one end of each of the transmission rods is hinged to the edge of the threaded sleeve (283), and the other end of each of the transmission rods is hinged to the bottom of the rotating sleeves (284) in the four sleeves (22).

3. The device for measuring the internal temperature of the frozen soil layer for shield section freezing construction according to claim 1 is characterized in that: The steering adjustment component (29) comprises: A rotating disk (291), the rotating disk (291) is connected to a side of the sleeve (22) near the center of the driving column (21) in a limited rotation manner; A fixing rod (292), the fixing rod (292) being fixedly mounted on one end of the rotating disk (291) away from the center of the driving column (21); A gear (293), the gear (293) being fixedly mounted on one end of the rotating disk (291) away from the fixing rod (292); A gear cylinder (294), the bottom of the driving column (21) is rotationally connected to the gear cylinder (294), and the teeth of the gear cylinder (294) face downwards; A gear ring (295), the gear ring (295) being fixedly mounted on the bottom end of the gear cylinder (294); The second threaded rod (296) is connected to the side of the gear ring (295) inside the driving column (21) in a limited rotation manner with the second threaded rod (296), and the second threaded rod (296) is meshed with the gear ring (295); Motor 2 (297), the side end of the driving column (21) is fixedly mounted with motor 2 (297), and the motor 2 (297) is transmission-connected to the threaded rod 2 (296) for driving the threaded rod 2 (296) to rotate.

4. The device for measuring the internal temperature of the frozen soil layer for shield section freezing construction according to claim 3 is characterized in that: The number of fixed rods (292) fixedly mounted on the side end of a single rotating disk (291) is three and evenly distributed in the upper half of the side of the rotating disk (291). The fixed rods (292) penetrate the side wall of the slide cylinder (23) and are slidably connected to the slide cylinder (23).

5. The device for measuring the internal temperature of the frozen soil layer for shield section freezing construction according to claim 3 is characterized in that: The gear (293) is located outside the sleeve (22) on one side close to the center of the driving column (21), and the edge of the gear (293) extends upward to the inside of the driving column (21), and the gear (293) is meshed with the teeth at the bottom of the gear cylinder (294).

6. The device for measuring the internal temperature of the frozen soil layer for shield section freezing construction according to claim 1, characterized in that: The fine adjustment component (4) comprises: A cone cylinder (41), the interior of the adjustment cylinder (3) being slidably connected to the cone cylinder (41); A cone block (42), the cone cylinder (41) is slidably connected with the cone block (42); A support plate (43), the upper portion of the interior of the cone (41) being drivingly connected to the support plate (43); Spring three (44), a spring three (44) is fixedly connected between the top end of the cone block (42) and the support plate (43); A squeezing ball (45) is movably connected to the bottom of the cone block (42).

7. The device for measuring the internal temperature of the frozen soil layer for shield section freezing construction according to claim 6 is characterized in that: A transmission assembly is provided between the top end of the support plate (43) and the bottom end of the cone cylinder (41), and is used to adjust the support plate (43) up and down in the cone cylinder (41).

8. The device for measuring the internal temperature of the frozen soil layer for shield section freezing construction according to claim 6 is characterized in that: The inner wall at the bottom of the cone cylinder (41) and the bottom edge of the cone block (42) are in the shape of a cone whose diameter gradually decreases from top to bottom. When the cone block (42) moves downward in the cone cylinder (41), the cone surface design can push the squeezing ball (45) to move inward, and a circular arc groove matching the squeezing ball (45) is provided on the side surface of the connecting column (8) where it is aligned with the squeezing ball (45).

9. The device for measuring the internal temperature of the frozen soil layer for shield section freezing construction according to claim 6, characterized in that: A spring 1 (5) is fixedly connected between the bottom end of the edge of the cone cylinder (41) and the bottom end of the inner cavity of the adjustment cylinder (3); a connecting rod (9) is fixedly installed at the top end of the edge of the cone cylinder (41); the connecting rod (9) penetrates the adjustment cylinder (3) upwards, and a pulling rope (10) is fixedly connected to the bottom end of the connecting rod (9).

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