A loose-fitting expansion joint for underground water supply pipelines with supporting and guiding functions

Abstract

This invention belongs to the field of water conservancy facilities technology and discloses a loose-fitting expansion joint for underground water supply pipelines with supporting and guiding functions. It includes a loose-fitting expansion joint body, with two sets of first ring blocks and two sets of second ring blocks installed on the outer surface of the body. The two sets of second ring blocks are positioned between the two sets of first ring blocks. A support mechanism restricting the movement range of the loose-fitting expansion joint body is installed on the outer surface of the body. Two sets of positioning mechanisms restricting the movement range of the support mechanism are installed at the bottom of the inner wall of the support mechanism. A second limiting mechanism is provided inside the support mechanism. A first limiting mechanism restricting the movement range at both ends of the loose-fitting expansion joint body is provided on the outer surface of the body. During operation, the support mechanism supports the loose-fitting expansion joint body, thereby minimizing the risk of the body falling and bending during use.

Description

Technical Field

[0001] This invention relates to the field of water conservancy facilities technology, specifically to a loose-fitting expansion joint for underground water supply pipelines with supporting and guiding functions. Background Technology

[0002] Loose-fitting expansion joints are connecting components between long-distance pipelines, used to compensate for and mitigate pipeline deformation. After installation, pipelines may experience lateral or longitudinal displacement due to thermal expansion and contraction or errors. The presence of expansion joints can alleviate pressure. During manual inspections of underground water supply pipelines, the deformation of the underground water supply pipeline can be monitored by measuring the deformation of the loose-fitting expansion joints at various locations. This ensures that when the deformation exceeds the maximum allowable deformation, it can be detected and addressed in a timely manner to avoid major losses.

[0003] For example, Chinese Patent No. CN214222328U discloses a cover-type loose-sleeve limiting expansion joint, which relates to the field of water conservancy facilities technology. Specifically, it is a cover-type loose-sleeve limiting expansion joint, including a cover and a sleeve. The outer surface of the cover is respectively fitted with a first ring block and a second ring block. One end of the cover is fixedly connected to a connecting ring block. The first ring block and the second ring block are both provided with through grooves. This cover-type loose-sleeve limiting expansion joint, through the arrangement of the pressure block, pressure plate, return spring, spherical block and annular groove, has the effect of facilitating docking and installation. Through the cooperation of the pressure block, pressure plate, return spring, spherical block and annular groove, during use, pressing the pressure block causes the sleeve to enter the interior of the cover, the spherical block to enter the interior of the annular groove, and the end of the sleeve to enter the interior of the annular groove, thereby facilitating docking and installation.

[0004] When reproducing the above patent application, the following problems were found in the technology: Most of the existing cover-type loose-fitting expansion joint bodies do not have a deformation monitoring mechanism, which requires staff to measure the usage status of the expansion joint body regularly. As a result, staff cannot know in time that the cover-type loose-fitting expansion joint body is damaged, thus reducing the practicality of the equipment.

[0005] To address this, a loose-fitting, limiting expansion joint for underground water supply pipelines with supporting and guiding functions is proposed. Summary of the Invention

[0006] The purpose of this invention is to address the problem that most existing loose-fitting expansion joints with cover-type compression fittings do not have a deformation monitoring mechanism, requiring staff to periodically measure the condition of the expansion joint body, thus preventing staff from immediately noticing damage to the loose-fitting expansion joint body. This invention provides a loose-fitting expansion joint for underground water supply pipelines with a support and guidance function.

[0007] To achieve the above objectives, the present invention specifically adopts the following technical solution:

[0008] A loose-fitting expansion joint for an underground water supply pipeline with supporting and guiding functions includes a loose-fitting expansion joint body. Two sets of first ring blocks and two sets of second ring blocks are installed on the outer surface of the loose-fitting expansion joint body. The two sets of second ring blocks are positioned between the two sets of first ring blocks. A support mechanism restricting the movement range of the loose-fitting expansion joint body is installed on the outer surface of the loose-fitting expansion joint body. Two sets of positioning mechanisms restricting the movement range of the support mechanism are installed at the bottom of the inner wall of the support mechanism. A second limiting mechanism is provided inside the support mechanism. A first limiting mechanism restricting the movement range at both ends of the loose-fitting expansion joint body is provided on the outer surface of the loose-fitting expansion joint body.

[0009] Furthermore, the limiting mechanism includes an electronic thermometer and a micro-strain high-sensitivity adhesive optical cable body. The micro-strain high-sensitivity adhesive optical cable body includes a G657A1 optical fiber inside. The outer surface of the micro-strain high-sensitivity adhesive optical cable body is provided with a tight-fitting layer. The tight-fitting layer is made of epoxy resin. The outer surface of the tight-fitting layer is bonded to the outer surface of the loose-fitting limiting expansion joint body. The electronic thermometer is installed on the right side of the first ring block away from the two sets of second ring blocks. The output end of the electronic thermometer and the G657A1 optical fiber are electrically connected to the access end of the computer in the computer room.

[0010] Furthermore, the micro-strain high-sensitivity adhesive optical cable body is attached to the upper and lower sides of the loose-sleeve limiting expansion joint body in an isosceles triangular reciprocating manner, and the micro-strain high-sensitivity adhesive optical cable body is arranged in a sawtooth pattern on the outer surface of the loose-sleeve limiting expansion joint body.

[0011] Furthermore, multiple sets of wire fasteners are installed on the outer surface of the loose-fitting limiting expansion joint body, and multiple bottom ends of the micro-strain high-sensitivity adhesive optical cable body are all snapped into the inside of the wire fasteners.

[0012] Furthermore, the support mechanism includes a support plate, an arc-shaped fixing plate one, and an arc-shaped fixing plate two. The arc-shaped fixing plate one is snapped onto the upper surface of the loose-fitting limiting expansion joint body. The upper surfaces of both the front and rear ends of the arc-shaped fixing plate one are provided with slots. The arc-shaped fixing plate two is snapped into the two sets of slots of the arc-shaped fixing plate one. A connecting sleeve rod is installed on the lower surface of the arc-shaped fixing plate one. The inner surface of the connecting sleeve rod is provided with internal threads. A lead screw is connected to the internal threads of the connecting sleeve rod. A through hole is provided on the lower surface of the lead screw. A fixing rod is rotatably connected inside the through hole of the lead screw. The support plate is installed on the lower surface of the fixing rod.

[0013] Furthermore, the second limiting mechanism includes a connecting block, which is installed on the side of the arc-shaped fixing plate away from the electronic thermometer. The upper surface of the connecting block has a through hole, and a positioning rod is inserted into the through hole. A limiting block is installed at the top of the positioning rod. The side of the limiting block near the electronic thermometer abuts against the side of the arc-shaped fixing plate away from the electronic thermometer. A fixing block is installed on the side of the positioning rod away from the arc-shaped fixing plate. The lower surface of the fixing block abuts against the upper surface of the connecting block. A groove is formed on the side of the fixing block away from the positioning rod. A U-shaped limiting block is installed inside the groove of the fixing block. The bottom of the inner wall of the U-shaped limiting block abuts against the lower surface of the connecting block.

[0014] Furthermore, both sets of positioning mechanisms include support columns, both sets of support columns are installed on the upper surface of the support plate, and the positions of the two sets of support columns are symmetrically distributed on the left and right sides of the connecting sleeve rod. The upper surface of both sets of support columns is equipped with a second fixing block, and the interior of both sets of second fixing blocks is provided with threaded holes. The internal threads of both sets of second fixing blocks are connected to screw rods, and the external threads at both ends of the left and right ends of the screw rods are connected to fixing sleeves. The positions of the four sets of fixing sleeves are respectively located between the two sets of first ring blocks and the two sets of second ring blocks.

[0015] Furthermore, each of the four sets of fixed sleeves has a through hole on its outer surface, and each of the four sets of fixed sleeves has a connecting rod connected to its internal through hole.

[0016] The beneficial effects of this invention are as follows: 1. This invention establishes an electrical connection between the output end of the electronic thermometer and the G657A1 optical fiber and the access end of the computer in the computer room. The G657A1 optical fiber is then installed on the outer surface of the loose-fitting expansion joint body and the water pipes at both ends of the loose-fitting expansion joint body. This allows the real-time monitoring data of the loose-fitting expansion joint body from the electronic thermometer and the G657A1 optical fiber to be preprocessed on the computer to obtain the frequency shift signal and the strain information of the G657A1 optical fiber on the loose-fitting expansion joint body. This yields the deformation of the G657A1 optical fiber on each section of the loose-fitting expansion joint body, thus facilitating real-time monitoring of the changes in the loose-fitting expansion joint body by remote personnel. 2. This invention pushes the second arc-shaped fixing plate to engage with the two sets of slots in the first arc-shaped fixing plate. Then, by rotating the screw, the lower surface of the support plate is brought into contact with the ground. This allows the support plate, the first arc-shaped fixing plate, and the second arc-shaped fixing plate to support the main body of the loose-fitting expansion joint, thus minimizing the risk of the main body sagging during use and causing bending at the connection between the main body and the two sets of water pipes. This improves the service life of the main body. 3. This invention rotates the four sets of fixing sleeves, causing the sides of the four sets of fixing sleeves furthest from the two adjacent sets of fixing blocks to abut against the outer surfaces of the two sets of first ring blocks and the two sets of second ring blocks. This allows the two sets of screws and the four sets of fixing sleeves to restrict the position of the support plate at the lower end of the main body of the loose-fitting expansion joint. This minimizes the risk of movement of the first arc-shaped fixing plate and the support plate during use, preventing the support mechanism from restricting the left and right movements of the main body. This improves the stability of the main body during use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the front structure of the present invention;

[0018] Figure 2 This is a side view of the structure of the present invention;

[0019] Figure 3 This is a front structural diagram of the positioning mechanism of the present invention;

[0020] Figure 4 This is a side view of the limiting mechanism 2 of the present invention;

[0021] Figure 5 This is a cross-sectional view of the limiting mechanism one of the present invention;

[0022] Figure 6 This is the present invention. Figure 1 Enlarged view of point A in the middle.

[0023] Reference numerals in the attached drawings: 1. Loose-fitting expansion joint body; 2. First ring block; 3. Second ring block; 4. Electronic thermometer; 5. Support mechanism; 501. Support plate; 502. Arc-shaped fixing plate one; 503. Arc-shaped fixing plate two; 504. Connecting sleeve rod; 505. Screw rod; 506. Fixing rod; 6. Limiting mechanism two; 601. Positioning rod; 602. Limiting block; 603. Fixing block one; 604. U-shaped limiting block; 605. Connecting block; 7. Limiting mechanism one; 701. Micro-strain high-sensitivity adhesive optical cable body; 702. G657A1 optical fiber; 703. Tight-fitting layer; 8. Wire fastener; 9. Positioning mechanism; 901. Support column; 902. Fixing block two; 903. Screw rod; 904. Fixing sleeve; 10. Connecting rod. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0026] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] In the description of the embodiments of the present invention, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0028] The following will combine Figures 1-6 A detailed description is provided of a loose-fitting expansion joint for an underground water supply pipeline with supporting and guiding functions according to an embodiment of the present invention.

[0029] Example 1: As Figures 1 to 5 As shown, a loose-fitting expansion joint for an underground water supply pipeline with supporting and guiding functions includes a loose-fitting expansion joint body 1. Two sets of first ring blocks 2 and two sets of second ring blocks 3 are installed on the outer surface of the loose-fitting expansion joint body 1. The two sets of second ring blocks 3 are positioned between the two sets of first ring blocks 2. A support mechanism 5 is installed on the outer surface of the loose-fitting expansion joint body 1 to limit its movement range. Two sets of positioning mechanisms 9 are installed at the bottom of the inner wall of the support mechanism 5 to limit its movement range. A second limiting mechanism 6 is provided inside the support mechanism 5. A first limiting mechanism 7 is provided on the outer surface of the loose-fitting expansion joint body 1 to limit the movement range of both ends of the loose-fitting expansion joint body 1. Specifically, the limiting mechanism... The limiting mechanism 7 monitors the real-time data of the loose-fitting expansion joint body 1. Then, through an electrical connection between the limiting mechanism 7 and a remote computer, the computer preprocesses the frequency shift signal and calculates the strain information of the limiting mechanism 7 on the loose-fitting expansion joint body 1. This allows for the determination of the deformation of the limiting mechanism 7 in each section of the loose-fitting expansion joint body 1, facilitating real-time monitoring of changes in the loose-fitting expansion joint body 1 by remote personnel. The supporting mechanism 5 supports the loose-fitting expansion joint body 1, minimizing the risk of it sagging during use and causing bending at the connection between the loose-fitting expansion joint body 1 and the two sets of water pipes, thus extending the service life of the loose-fitting expansion joint body 1.

[0030] like Figure 1 , Figure 2 and Figure 5As shown, the limiting mechanism 7 includes an electronic thermometer 4 and a micro-strain high-sensitivity adhesive optical cable body 701. The micro-strain high-sensitivity adhesive optical cable body 701 contains a G657A1 optical fiber 702. A tight-fitting layer 703 is provided on the outer surface of the micro-strain high-sensitivity adhesive optical cable body 701. The tight-fitting layer 703 is made of epoxy resin and is bonded to the outer surface of the loose-fitting limiting expansion joint body 1. The electronic thermometer 4 is installed on the right side of the first ring block 2, away from the two sets of second ring blocks 3. The output end of the electronic thermometer 4 and the G657A1 optical fiber 702 is electrically connected to the access end of the computer in the computer room. Specifically, the electronic thermometer 4 and the G657A1 optical fiber 702 are connected to the access end of the computer in the computer room. The output end of fiber optic cable 702 is electrically connected to the access end of the computer in the computer room. Then, fiber optic cable 702 is installed on the outer surface of the loose-fitting expansion joint body 1 and the water pipes at both ends of the loose-fitting expansion joint body 1 via G657A1 fiber optic cable 702. This allows the real-time monitoring data of the loose-fitting expansion joint body 1 by the electronic thermometer 4 and G657A1 fiber optic cable 702 to be preprocessed on the frequency shift signal on the computer, and the strain information of G657A1 fiber optic cable 702 on the loose-fitting expansion joint body 1 to be obtained. Thus, the deformation of G657A1 fiber optic cable 702 on each section of the loose-fitting expansion joint body 1 can be obtained. Therefore, it is convenient for remote staff to monitor the changes in the loose-fitting expansion joint body 1 in real time.

[0031] Meanwhile, the use status of the loose-fitting limit expansion joint body 1 is monitored in real time by the limiting mechanism 7, so that the staff does not need to measure and monitor the loose-fitting limit expansion joint body 1, thereby reducing the time spent by the staff in observing the use status of the loose-fitting limit expansion joint body 1 and thus improving the practicality of the device.

[0032] like Figure 1 , Figure 2 and Figure 5 As shown, the micro-strain high-sensitivity adhesive optical cable body 701 is attached to the upper and lower sides of the loose-sleeve limiting expansion joint body 1 in an isosceles triangular reciprocating manner, and the micro-strain high-sensitivity adhesive optical cable body 701 is arranged in a sawtooth pattern on the outer surface of the loose-sleeve limiting expansion joint body 1. Specifically, by arranging the micro-strain high-sensitivity adhesive optical cable body 701 in a sawtooth pattern on the outer surface of the loose-sleeve limiting expansion joint body 1, all parts of the micro-strain high-sensitivity adhesive optical cable body 701 are in a tensioned state, and each position of the G657A1 optical fiber 702 can be regarded as a sensing point reflecting Brillouin backscattered light containing strain information, thereby greatly improving the spatial resolution of the G657A1 optical fiber 702 and thus expanding the monitoring range of the G657A1 optical fiber 702.

[0033] like Figure 1 , Figure 2 and Figure 5As shown, multiple sets of wire fasteners 8 are installed on the outer surface of the loose-fitting expansion joint body 1. The outer surfaces of multiple bottom ends of the micro-strain high-sensitivity adhesive optical cable body 701 are all snapped into the inside of the wire fasteners 8. Specifically, the multiple sets of wire fasteners 8 restrict the position of the multiple sets of micro-strain high-sensitivity adhesive optical cable bodies 701 at the outer end of the loose-fitting expansion joint body 1, making it less likely for the multiple sets of micro-strain high-sensitivity adhesive optical cable bodies 701 to shift during use. This minimizes the deviation of the monitoring data of the micro-strain high-sensitivity adhesive optical cable body 701 due to the movement of the position of the micro-strain high-sensitivity adhesive optical cable body 701, thereby improving the accuracy of the monitoring data of the micro-strain high-sensitivity adhesive optical cable body 701 during use.

[0034] The implementation principle of a loose-fitting expansion joint for an underground water supply pipeline with a supporting and guiding function in Embodiment 1 of this application is as follows: An electrical connection is made between the output end of the electronic thermometer 4 and the G657A1 optical fiber 702 and the access end of the computer in the computer room. The G657A1 optical fiber 702 is then installed on the outer surface of the loose-fitting expansion joint body 1 and the water pipes at both ends of the body 1. This allows the real-time monitoring data of the loose-fitting expansion joint body 1 from the electronic thermometer 4 and the G657A1 optical fiber 702 to be preprocessed on the computer to obtain the strain information of the G657A1 optical fiber 702 on the loose-fitting expansion joint body 1. This yields the deformation of the G657A1 optical fiber 702 on each section of the loose-fitting expansion joint body 1, thus facilitating real-time monitoring of changes in the loose-fitting expansion joint body 1 by remote personnel.

[0035] Meanwhile, multiple sets of fixing buckles 8 restrict the position of multiple sets of micro-strain high-sensitivity adhesive optical cable bodies 701 at the outer end of the loose-fitting limiting expansion joint body 1, making it less likely for the multiple sets of micro-strain high-sensitivity adhesive optical cable bodies 701 to shift during use. This minimizes the deviation of the monitoring data of the micro-strain high-sensitivity adhesive optical cable bodies 701 due to the movement of the position of the micro-strain high-sensitivity adhesive optical cable bodies 701, thus improving the accuracy of the monitoring data of the micro-strain high-sensitivity adhesive optical cable bodies 701 during use.

[0036] Example 2: Figure 1 , Figure 2 and Figure 6As shown, the support mechanism 5 includes a support plate 501, an arc-shaped fixing plate 1 502, and an arc-shaped fixing plate 2 503. The arc-shaped fixing plate 1 502 is snapped onto the upper surface of the loose-fitting limiting expansion joint body 1. Slots are provided on the upper surfaces of both the front and rear ends of the arc-shaped fixing plate 1 502. The arc-shaped fixing plate 2 503 is snapped into the two sets of slots of the arc-shaped fixing plate 1 502. A connecting sleeve rod 504 is installed on the lower surface of the arc-shaped fixing plate 1 502. An internal thread is provided on the inner surface of the connecting sleeve rod 504. A lead screw 505 is connected to the internal thread of the connecting sleeve rod 504. A through hole is provided on the lower surface of the lead screw 505. A fixing rod 506 is rotatably connected inside the through hole of the lead screw 505. The support plate 501 is installed on the fixed... The lower surface of rod 506; specifically, after the two sets of water pipes are installed to the left and right ends of the loose-fitting expansion joint body 1, the arc-shaped fixing plate 2 503 is pushed to engage with the two sets of slots of the arc-shaped fixing plate 1 502. Then, by rotating the screw 505, the lower surface of the support plate 501 is brought into contact with the ground, so that the support plate 501, the arc-shaped fixing plate 1 502 and the arc-shaped fixing plate 2 503 support the loose-fitting expansion joint body 1, thereby minimizing the risk of the loose-fitting expansion joint body 1 falling during use and causing bending at the connection between the loose-fitting expansion joint body 1 and the two sets of water pipes, thus improving the service life of the loose-fitting expansion joint body 1.

[0037] Meanwhile, by having the second arc-shaped fixing plate 503 snap into the slot of the first arc-shaped fixing plate 502, the time spent by the staff in assembling the support mechanism 5 is shortened, thus facilitating the replacement and maintenance of the support mechanism 5 in the future. The fixing rod 506 is rotatably connected to the through hole of the lead screw 505, so that the position of the support plate 501 is not easily displaced during the rotation of the lead screw 505, thereby minimizing the possibility of the support plate 501 shifting position during use in the future.

[0038] like Figure 1 and Figure 4As shown, the limiting mechanism 2 6 includes a connecting block 605, which is installed on the side of the arc-shaped fixing plate 1 502 away from the electronic thermometer 4. A through hole is formed on the upper surface of the connecting block 605, and a positioning rod 601 is inserted into the through hole. A limiting block 602 is installed at the top of the positioning rod 601. The side of the limiting block 602 closest to the electronic thermometer 4 abuts against the side of the arc-shaped fixing plate 2 503 away from the electronic thermometer 4. A fixing block 1 603 is installed on the side of the positioning rod 601 away from the arc-shaped fixing plate 1 502. The lower surface of the fixing block 1 603 abuts against the upper surface of the connecting block 605. A groove is formed on the side of the fixing block 1 603 away from the positioning rod 601, and a U-shaped limiting block 6 is installed inside the groove of the fixing block 1 603. 04. The bottom of the inner wall of the U-shaped limiting block 604 abuts against the lower surface of the connecting block 605. Specifically, after the support mechanism 5 is installed on the outer surface of the loose-fitting limiting expansion joint body 1, the positioning rod 601 is pushed and inserted into the through hole of the connecting block 605, so that the side of the limiting block 602 near the electronic thermometer 4 abuts against the side of the arc-shaped fixing plate 503 away from the electronic thermometer 4. The limiting block 602 restricts the movement of the arc-shaped fixing plate 503 inside the slot of the arc-shaped fixing plate 502, thereby minimizing the movement of the arc-shaped fixing plate 503 from the slot of the arc-shaped fixing plate 502 during use, thus improving the stability of the arc-shaped fixing plate 503 during use.

[0039] Meanwhile, by using the limiting block 602 and positioning rod 601 instead of traditional fastening screws to restrict the movement of the arc-shaped fixing plate 503, the time spent by the workers in tightening the arc-shaped fixing plate 503 is shortened, thereby reducing the amount of labor required. When the lower surface of the fixing block 603 abuts against the upper surface of the connecting block 605, the U-shaped limiting block 604 is pushed to insert it into the fixing block 603. The groove of block 3 allows the connecting block 605 to engage between the U-shaped limiting block 604 and the fixing block 603. The fixing block 603 and the U-shaped limiting block 604 restrict the movement of the positioning rod 601 within the through hole of the connecting block 605, thereby minimizing the movement of the positioning rod 601 during use and preventing the limiting block 602 from being unable to restrict the movement of the arc-shaped fixing plate 503. This improves the stability of the limiting block 602 and the positioning rod 601 during use.

[0040] The implementation principle of the loose-fitting limiting expansion joint of an underground water supply pipeline with supporting and guiding function in Embodiment 2 of this application is as follows: By pushing the arc-shaped fixing plate 2 503, the arc-shaped fixing plate 2 503 is snapped into the two sets of slots of the arc-shaped fixing plate 1 502. Then, by rotating the screw 505, the lower surface of the support plate 501 is pressed against the ground, so that the support plate 501, the arc-shaped fixing plate 1 502, and the arc-shaped fixing plate 2 503 support the loose-fitting limiting expansion joint body 1, thereby minimizing the risk of the loose-fitting limiting expansion joint body 1 falling during use. The loose-fitting limiting expansion joint body 1 and the connection between the two sets of water pipes are bent; by pushing the positioning rod 601, the positioning rod 601 is inserted into the through hole of the connecting block 605, so that the side of the limiting block 602 near the electronic thermometer 4 abuts against the side of the arc-shaped fixing plate 2 503 away from the electronic thermometer 4, and the limiting block 602 restricts the movement of the arc-shaped fixing plate 2 503 inside the slot of the arc-shaped fixing plate 1 502, thereby minimizing the movement of the arc-shaped fixing plate 2 503 from inside the slot of the arc-shaped fixing plate 1 502 during use.

[0041] At the same time, by pushing the U-shaped limiting block 604, the U-shaped limiting block 604 is inserted into the groove of the fixing block 603, so that the connecting block 605 is engaged between the U-shaped limiting block 604 and the fixing block 603. The fixing block 603 and the U-shaped limiting block 604 restrict the movement of the positioning rod 601 inside the through hole of the connecting block 605, thereby minimizing the movement of the positioning rod 601 during use.

[0042] Example 3: Figures 1 to 3As shown, both sets of positioning mechanisms 9 include support columns 901. Both sets of support columns 901 are mounted on the upper surface of the support plate 501. The positions of the two sets of support columns 901 are symmetrically distributed on the left and right sides of the connecting sleeve rod 504. Fixing blocks 902 are mounted on the upper surface of both sets of support columns 901. Threaded holes are opened inside both sets of fixing blocks 902. Screws 903 are connected to the internal threads of both sets of fixing blocks 902. Fixing sleeves 904 are connected to the external threads at both ends of the two sets of screws 903. The four sets of fixing sleeves 904 are located between the two sets of first ring blocks 2 and the two sets of second ring blocks 3, respectively. Specifically, when the support mechanism 5 is installed to the loosened position... After the outer surface of the main body 1 of the limiting expansion joint is closed, the four sets of fixing sleeves 904 are rotated so that the side of the four sets of fixing sleeves 904 away from the two sets of fixing blocks 902 respectively abuts against the outer surfaces of the two sets of first ring blocks 2 and the two sets of second ring blocks 3. This allows the two sets of screws 903 and the four sets of fixing sleeves 904 to restrict the position of the support plate 501 at the lower end of the loose-fitting limiting expansion joint main body 1, thereby minimizing the movement of the arc-shaped fixing plate 502 and the support plate 501 during use, which would prevent the support mechanism 5 from restricting the movement of the loose-fitting limiting expansion joint main body 1 on the left and right sides. This improves the stability of the loose-fitting limiting expansion joint main body 1 during use.

[0043] Meanwhile, by using two sets of screws 903 and four sets of fixing sleeves 904 instead of traditional bolts to restrict the position of the support plate 501 on the ground, workers do not need to drill threaded holes in the support plate 501 or the ground during the installation of the support mechanism 5, thus shortening the time spent by workers during the installation of the support mechanism 5 and improving the practicality of the device. The two sets of positioning mechanisms 9 are symmetrically distributed on the left and right sides of the connecting sleeve rod 504, and both sets of positioning mechanisms 9 are installed on the outer end of the loose-sleeve limiting expansion joint body 1. This allows the two sets of positioning mechanisms 9 to distribute the load-bearing mass of the support mechanism 5 after installation, and improves the strength of the connecting sleeve rod 504 and the screw rod 505 during use. This minimizes the risk of pipe misalignment on the left and right sides of the loose-sleeve limiting expansion joint body 1, which could lead to bending of the connecting sleeve rod 504 and the screw rod 505 during use, thus increasing the service life of the support mechanism 5.

[0044] like Figure 3 As shown, the outer surfaces of the four sets of fixing sleeves 904 are all provided with through holes, and the internal through holes of the four sets of fixing sleeves 904 are all connected to connecting rods 10. Specifically, by pushing the connecting rods 10, the four sets of connecting rods 10 are respectively inserted into the through holes of the four sets of fixing sleeves 904. Then, by pushing the four sets of connecting rods 10, the four sets of fixing sleeves 904 are rotated. This reduces the time spent by the workers when rotating the four sets of fixing sleeves 904, thereby reducing the amount of labor required by the workers when installing the two sets of positioning mechanisms 9. Therefore, it is convenient for the workers to install the two sets of positioning mechanisms 9.

[0045] The implementation principle of the loose-fitting limiting expansion joint of the underground water supply pipeline with supporting and guiding function in Embodiment 3 of this application is as follows: by rotating the four sets of fixed sleeves 904, the side of the four sets of fixed sleeves 904 away from the two sets of fixed blocks 902 respectively abuts against the outer surfaces of the two sets of first ring blocks 2 and the two sets of second ring blocks 3, so that the two sets of screws 903 and the four sets of fixed sleeves 904 restrict the position of the support plate 501 at the lower end of the loose-fitting limiting expansion joint body 1, thereby minimizing the movement of the arc-shaped fixed plate 502 and the support plate 501 during use, which would prevent the support mechanism 5 from restricting the movement of the loose-fitting limiting expansion joint body 1 on the left and right sides.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A loose sleeve limiting expansion joint with support and guide functions for underground water supply pipelines, comprising a loose sleeve limiting expansion joint main body (1), characterized in that: Two sets of first ring blocks (2) and two sets of second ring blocks (3) are installed on the outer surface of the loose-fitting limiting expansion joint body (1). The positions of the two sets of second ring blocks (3) are located between the two sets of first ring blocks (2). A support mechanism (5) that restricts the movement range of the loose-fitting limiting expansion joint body (1) is installed on the outer surface of the loose-fitting limiting expansion joint body (1). Two sets of positioning mechanisms (9) that restrict the movement range of the support mechanism (5) are installed at the bottom of the inner wall of the support mechanism (5). A second limiting mechanism (6) is provided inside the support mechanism (5). A first limiting mechanism (7) that restricts the movement range of both ends of the loose-fitting limiting expansion joint body (1) is provided on the outer surface of the loose-fitting limiting expansion joint body (1). The limiting mechanism 1 (7) includes an electronic thermometer (4) and a micro-strain high-sensitivity adhesive optical cable body (701). The micro-strain high-sensitivity adhesive optical cable body (701) includes a G657A1 optical fiber (702) inside. The outer surface of the micro-strain high-sensitivity adhesive optical cable body (701) is provided with a tight-fitting layer (703). The material of the tight-fitting layer (703) is epoxy resin. The outer surface of the tight-fitting layer (703) is bonded to the outer surface of the loose-fitting limiting expansion joint body (1). The electronic thermometer (4) is installed on the right side of the first ring block (2) away from the two sets of second ring blocks (3). The output end of the electronic thermometer (4) and the G657A1 optical fiber (702) are electrically connected to the access end of the computer in the computer room. The support mechanism (5) includes a support plate (501), an arc-shaped fixing plate one (502) and an arc-shaped fixing plate two (503). The arc-shaped fixing plate one (502) is snapped onto the upper surface of the loose-fitting limiting expansion joint body (1). The upper surfaces of the front and rear ends of the arc-shaped fixing plate one (502) are provided with slots. The arc-shaped fixing plate two (503) is snapped into the two sets of slots of the arc-shaped fixing plate one (502). A connecting sleeve rod (504) is installed on the lower surface of the arc-shaped fixing plate one (502). The inner surface of the connecting sleeve rod (504) is provided with an internal thread. The internal thread of the connecting sleeve rod (504) is connected to a lead screw (505). The lower surface of the lead screw (505) is provided with a through hole. A fixing rod (506) is rotatably connected inside the through hole of the lead screw (505). The support plate (501) is installed on the lower surface of the fixing rod (506). The second limiting mechanism (6) includes a connecting block (605), which is installed on the side of the arc-shaped fixing plate (502) away from the electronic thermometer (4). A through hole is provided on the upper surface of the connecting block (605), and a positioning rod (601) is inserted into the through hole of the connecting block (605). A limiting block (602) is installed on the top of the positioning rod (601), and the side of the limiting block (602) near the electronic thermometer (4) abuts against the side of the arc-shaped fixing plate (503) away from the electronic thermometer (4). On one side of the sub-thermometer (4), a fixing block (603) is installed on the side of the positioning rod (601) away from the arc-shaped fixing plate (502). The lower surface of the fixing block (603) abuts against the upper surface of the connecting block (605). A groove is provided on the side of the fixing block (603) away from the positioning rod (601). A U-shaped limiting block (604) is installed inside the groove of the fixing block (603). The bottom of the inner wall of the U-shaped limiting block (604) abuts against the lower surface of the connecting block (605). Both sets of positioning mechanisms (9) include support columns (901). Both sets of support columns (901) are installed on the upper surface of the support plate (501). The positions of the two sets of support columns (901) are symmetrically distributed on the left and right sides of the connecting sleeve rod (504). The upper surface of both sets of support columns (901) is equipped with fixing blocks (902). The interior of both sets of fixing blocks (902) is provided with threaded holes. The internal threads of both sets of fixing blocks (902) are connected to screws (903). The external threads at the left and right ends of both sets of screws (903) are connected to fixing sleeves (904). The positions of the four sets of fixing sleeves (904) are respectively located between the two sets of first ring blocks (2) and the two sets of second ring blocks (3).

2. The loose tube expansion joint with support and guide functions for underground water supply pipeline according to claim 1, characterized in that: The micro-strain high-sensitivity adhesive optical cable body (701) is attached to the upper and lower sides of the loose-sleeve limiting expansion joint body (1) in an isosceles triangular reciprocating manner, and the micro-strain high-sensitivity adhesive optical cable body (701) is arranged in a sawtooth pattern on the outer surface of the loose-sleeve limiting expansion joint body (1).

3. The loose tube expansion joint with support and guide functions for underground water supply pipeline according to claim 1, characterized in that: Multiple sets of wire fasteners (8) are installed on the outer surface of the loose-fitting expansion joint body (1), and the outer surfaces of multiple bottom ends of the micro-strain high-sensitivity adhesive optical cable body (701) are all snapped into the inside of the wire fasteners (8).

4. The loose tube expansion joint with support and guide functions for underground water supply pipeline according to claim 3, characterized in that: The outer surface of each of the four sets of fixed sleeves (904) is provided with a through hole, and the internal through hole of each of the four sets of fixed sleeves (904) is connected to a connecting rod (10).

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