Fixing device for CR target reflector

Abstract

The invention relates to the technical field of InSAR-CR monitoring, in particular to a fixing device for a CR target reflector, and aims to solve the problem that according to an existing corner reflector mounting method, a corner reflector is mounted on a tower in a bolt fixing mode, so that maintenance, disassembly and replacement of the corner reflector are tedious, and the fixing device comprises a box body, a sliding rail, a sliding plate and a magnet. Sliding rails are fixed to the two sides in the box body, sliding plates slide on the sliding rails, and magnets are installed at the lower ends of the sliding plates. A supporting column is fixed to the upper end of the sliding plate, a push plate is fixed to the upper end of the supporting column, a rotating shaft is rotationally arranged on the box body, a cam is fixed to the rotating shaft, the cam makes contact with the lower end of the push plate, the cam is used for pushing the push plate to move upwards, and the rotating shaft penetrates through the box body; the method is used for quickly mounting the corner reflector on the power transmission tower.

Description

Technical Field

[0001] The invention relates to the technical field of InSAR-CR monitoring, and in particular to a fixing device for a CR target reflector. Background Art

[0002] The northern region is located on the southern edge of the permafrost of the Eurasian continent. The winter is cold and long, and the summer is warm and rainy. The surface layer undergoes repeated freezing and thawing, causing material differentiation and recombination, which seriously affects the stability of the surface rock. With global warming and the disturbance of permafrost by human engineering, the occurrence of unstable settlement of transmission line channels in frozen areas has also increased. The foundations of transmission lines are all buried foundations, which have strong disturbance to frozen soil and outstanding heat transfer effects. Especially in winter and spring, as the temperature warms up, adverse frozen soil disasters such as thawing and settlement are often found on the surface around the tower base of the transmission line, causing tower base settlement, deformation, tower tilt and other faults, which seriously affect the safe operation of the transmission line.

[0003] In order to detect the settlement of transmission lines, the existing technology uses the surface deformation data obtained by combining wide-area InSAR technology and corner reflector target technology. Through the fusion and comprehensive analysis of satellite SAR image data and the on-site deployment of CR points, the large-scale settlement of the transmission corridor is truly restored. Therefore, it is necessary to deploy corner reflectors at key locations of poles and transmission lines in geologically unstable areas to evaluate environmental conditions. Among them, corner reflectors need to be maintained and replaced regularly, but existing corner reflectors are often installed on poles and towers by bolts, making the subsequent maintenance and replacement operations very cumbersome. Summary of the invention

[0004] In order to solve the problem that the existing corner reflector installation method uses bolts to fix the corner reflector on the pole tower, which leads to cumbersome maintenance and disassembly and replacement of the corner reflector, the present invention further provides a fixing device for the CR target reflector to solve the problem raised in the above background technology.

[0005] The technical solution of the present invention is:

[0006] A fixing device for a CR target reflector comprises a box body, a slide rail, a slide plate and a magnet. The box body is fixed with slide rails on both sides, a slide plate slides on the slide rail, and a magnet is installed at the lower end of the slide plate.

[0007] A support column is fixed to the upper end of the sliding plate, a push plate is fixed to the upper end of the support column, a rotating shaft is rotated on the box body, a cam is fixed on the rotating shaft, the cam is in contact with the lower end of the push plate, the cam is used to push the push plate to move upward, the rotating shaft passes through the box body, and a rotating handle is fixed on the rotating shaft outside the box body.

[0008] Furthermore, a tension spring is installed on the slide rail, and the tension spring is used to make the sliding plate have a tendency to move upward. The far repose angle of the cam is fixedly connected with a locking spring, and the other end of the locking spring is fixedly connected to the top end of the box body.

[0009] Furthermore, an isolation box is sleeved on the outer side of the box body, and the isolation box is made of ferritic stainless steel.

[0010] Furthermore, an anti-collision plate is installed at the lower end of the box body.

[0011] Furthermore, the anti-collision plate is made of high-density polyethylene.

[0012] Furthermore, the magnet is a neodymium magnet.

[0013] Furthermore, the box body is made of aluminum-manganese alloy.

[0014] Furthermore, a pillar is fixed on the outside of the box body, a rotating ring is provided at the end of the pillar, a rotating ball rotates inside the rotating ring, a retractable threaded portion is provided at the upper opening of the rotating ring, a tightening nut is threadedly connected to the retractable threaded portion, a fixing rod is installed on the upper end of the rotating ball, and the fixing rod passes through the retractable threaded portion and the nut.

[0015] Furthermore, a counterweight ball is installed at the lower end of the rotating ball.

[0016] Furthermore, a mounting thread is provided at the upper end of the fixing rod, and the fixing rod is used to be connected to the corner reflector.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. A fixing device for CR target reflector. This device is a CR target corner reflector fixing device dedicated to transmission towers. Since the transmission towers are made of iron, in order to facilitate disassembly, this device adopts permanent magnet magnetic fixation. A neodymium magnet that can slide in the box body is provided. When the neodymium magnet is close to the tower, it is fixed by magnetic attraction with the tower. The neodymium magnet is put into the center of the box body to disconnect the magnetic attraction for disassembly. Compared with traditional bolt fixing, this device can complete the installation by pushing the handle when it is close to the installation point. All fixing devices are integrated into one without the need for bolts or other clamps. Therefore, there is no need to carry an electric wrench during construction, which reduces the process of rotating bolts and greatly reduces the operation time at high altitude during maintenance.

[0019] 2. A cam magnet propulsion device is provided. Since neodymium magnets have strong magnetism, it is difficult to remove the magnets by conventional means. By rotating the cam, linear motion is converted into circular motion, and the lever arm is increased by setting a turning handle, thereby reducing the force required for removing the neodymium magnets.

[0020] 3. A set of vertical calibration structures is set up. The CR target corner reflector has a built-in electronic compass and needs to maintain a horizontal posture during installation. However, the transmission tower is tower-shaped, so it is impossible to ensure that all corner reflectors installed on the transmission tower are in a vertical state. The rotating ball rotates in the rotating ring, and then the fixed rod is vertically positioned to achieve vertical installation of the corner reflector. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The overall structure of the fixing device is shown in FIG. Figure I ;

[0022] Figure 2 The overall structure of the fixing device is shown in FIG. Figure II ;

[0023] Figure 3 This is an exploded view of the box body and the isolation box in the fixing device;

[0024] Figure 4 Longitudinal section of the fixing device Figure I ;

[0025] Figure 5 Longitudinal section of the fixing device Figure II ;

[0026] Figure 6 is a schematic diagram of the internal structure of the fixed device;

[0027] Figure 7 It is a schematic diagram of the structure of the vertical calibration device in the fixing device;

[0028] Figure 8 A schematic diagram of opening the tightening nut of the vertical calibration device in the fixture;

[0029] Fig. 9 is a longitudinal cross-sectional view of the vertical calibration device in the fixture;

[0030] Fig.10 Schematic diagram of the structure for installing a corner reflector in this fixture.

[0031] In the figure: 101, box body; 102, slide rail; 103, sliding plate; 104, magnet; 201, support column; 202, push plate; 203, rotating shaft; 204, cam; 205, rotating handle; 207, tension spring; 208, locking spring; 105, isolation box; 106, anti-collision plate; 301, pillar; 302, rotating ring; 303, rotating ball; 304, retractable threaded portion; 305, tightening nut; 306, fixing rod; 307, counterweight ball. DETAILED DESCRIPTION

[0032] Specific implementation method 1: See Figure 1-6As shown, a fixing device for a CR target reflector, this embodiment includes a box body 101, a slide rail 102, a slide plate 103 and a magnet 104, the slide rails 102 are fixed on both sides of the box body 101, the slide plate 103 slides on the slide rail 102, and the lower end of the slide plate 103 is installed with a magnet 104;

[0033] A support column 201 is fixed to the upper end of the sliding plate 103, and a push plate 202 is fixed to the upper end of the support column 201. A rotating shaft 203 rotates on the box body 101, and a cam 204 is fixed on the rotating shaft 203. The cam 204 contacts the lower end of the push plate 202, and the cam 204 is used to push the push plate 202 to move upward. The rotating shaft 203 passes through the box body 101, and a rotating handle 205 is fixed on the rotating shaft 203 located outside the box body 101.

[0034] Specific implementation method 2: See Figure 1-3 As shown, in this embodiment, the outer side of the box body 101 is covered with an isolation box 105, and the isolation box 105 is made of ferritic stainless steel.

[0035] Specific implementation method three: see Figure 1-4 As shown, an anti-collision plate 106 is installed at the lower end of the box body 101 in this embodiment.

[0036] Specific implementation method four: see Figure 1-4 As shown, the anti-collision plate 106 in this embodiment is made of high-density polyethylene.

[0037] Specific implementation method five: see Figure 4-6 As shown, the magnet 104 described in this embodiment is a neodymium magnet.

[0038] Specific implementation method six: see Figure 1-4 As shown, the box body 101 in this embodiment is made of aluminum-manganese alloy.

[0039] Furthermore, the box body 101 is a hollow rectangular parallelepiped structure with an opening at the lower end. The box body 101 and its internal parts are made of aluminum-manganese alloy, which is a non-magnetic material to prevent being attracted by magnets. The left and right sides of the inner wall of the box body 101 are fixedly connected with cylindrical slide rails 102 by bolts, and a sliding plate 103 slides between the two slide rails 102. The slide rails 102 limit the movement of the sliding plate 103 so that the sliding plate 103 can only slide up and down in the vertical direction. The lower end of the sliding plate 103 is fixedly connected with a magnet 104 for magnetic attraction with the pole tower. A high-density polyethylene anti-collision plate 106 is fixedly connected to the opening at the lower end of the box body 101. Because the instantaneous impact of the magnet 104 and the pole tower is large, in order to prevent the magnet 104 from being broken due to impact, a high-density polyethylene anti-collision plate 106 is installed as a buffer device. Neodymium magnets have strong magnetic properties. If they are directly attracted to the iron tower, it will be difficult to remove, and iron filings will be attracted to the magnets 104. Therefore, an anti-collision plate 106 is provided as a blocking device.

[0040] Furthermore, a push plate 202 is fixed to the upper end of the sliding plate 103 through a support column 201. The device is symmetrically provided with two sets of cam mechanisms, two rotating shafts 203 penetrate and are rotatably connected to the box body 101, and the two rotating shafts 203 can be linked by gears so that the two cams 204 can rotate synchronously, and the lower end of the push plate 202 contacts the cam 204, and the cam 204 is provided with a near repose angle and a far repose angle. A rotating handle 205 is fixed to the rotating shaft 203 located outside the box body 101, and the rotating handle 205 is used to drive the cam 204 to rotate through the rotating shaft 203. When the rotating handle 205 rotates to the upper end, the near repose angle of the cam 204 contacts the push plate 202; when the rotating handle 205 rotates to the lower end, the far repose angle of the cam 204 contacts the push plate 202.

[0041] Specific implementation method seven: See Figure 7-9 As shown, a tension spring 207 is installed on the slide rail 102 in this embodiment, and the tension spring 207 is used to make the sliding plate 103 have a tendency to move downward. The far repose angle of the cam 204 is fixedly connected with a locking spring 208, and the other end of the locking spring 208 is fixedly connected to the top of the box body 101.

[0042] Furthermore, a plurality of tension springs 207 are sleeved on the slide rail 102 and arranged between the lower fixed portion of the slide rail 102 and the slide plate 103, and are used to pull the slide plate 103 to move downward, so that in the non-engaged state, the slide plate 103 and the push plate 202 have a tendency to move downward to support the cam 204. The locking spring 208 is used to pull the cam 204 to rotate, so that the far rest angle of the cam 204 has a tendency to rotate upward.

[0043] Furthermore, in the non-magnetic state when not installed, the handle 205 rotates to the lower end, and at the same time, the distal repose angle of the cam 204 presses against the push plate 202, and the magnet 104 is located at the center of the box body 101; when installing, the anti-collision plate 106 of the device is placed close to the transmission tower, and the handle 205 is pulled upward, the handle 205 drives the cam 204 to rotate until the proximal repose angle of the cam 204 contacts the push plate 202, and the sliding plate 103 moves downward under the tension of the tension spring 207 until the magnet 104 is attracted to the transmission tower, at which time the device is in the magnetic state; when disassembly is required, the handle 205 is pushed downward, the handle 205 drives the cam 204 to rotate, and the distal repose angle of the cam 204 pushes the push plate 202 to move upward, thereby driving the magnet 104 to move upward and retract to the center of the box body 101 and separate from the transmission tower, completing the disassembly of the device, at which time the device is in the non-magnetic state.

[0044] Furthermore, during transportation, the device is in a non-magnetic state. At this time, the handle 205 rotates downward, and the far repose angle of the cam 204 presses against the push plate 202, so that the magnet 104 remains in the box body 101 and the center position. However, vibration or squeezing of the handle 205 is inevitable during transportation. When the vibration or squeezing of the handle 205 causes the cam 204 to rotate, the far repose angle no longer presses upward against the push plate 202, causing the magnet 104 to lose its upward support and causing the device to be in a magnetic state and dangerous. To solve this problem, a locking spring 208 is provided. When the device is in a non-magnetic state, the locking spring 208 pulls the cam 204 to prevent the cam 204 from rotating. The far repose angle of the cam 204 is kept against the push plate 202, so that the device remains in a non-magnetic state. During the process of magnetic attraction with the iron tower after installation, since the attraction force of the neodymium magnet is much greater than the pulling force of the locking spring 208 on the cam 204, the pulling force of the locking spring 208 will not affect the strength of the magnetic attraction of the device.

[0045] Furthermore, the fixing method of the device adopts permanent magnet magnetic fixation. Compared with the traditional bolt fixation, the device can be installed by pushing the handle when it is close to the installation point, without the need to cooperate with bolts or other clamps. All fixing devices are integrated into one, and there is no need to carry an electric wrench, which reduces the process of rotating the bolts and greatly reduces the operation time at high altitude during maintenance. In addition, the device is provided with a set of cam magnet propulsion devices. Because the magnetism of neodymium magnets is strong, it is difficult to disassemble the magnets in conventional ways. By rotating the cam, the linear motion is converted into circular motion, and the lever arm is increased by setting the handle, thereby reducing the force required for disassembly of the neodymium magnet. The traditional magnetic fixing device needs to be disassembled by lifting, but when operating at high altitude on the iron tower, if the magnetic fixing device is disassembled by lifting, the moment the magnet separates from the iron tower will cause the construction personnel to lean back, and in severe cases, there will be a risk of falling. The device adopts a mechanical structure, and the lifting action during disassembly is replaced by pressing, which eliminates the backward leaning caused by the construction personnel being unable to retract the force when disassembling the magnetic fixing device, greatly improving the construction safety.

[0046] Specific implementation method eight: See Figure 7-10 As shown, a pillar 301 is fixed to the outer side of the box body 101 described in this embodiment, a rotating ring 302 is provided at the end of the pillar 301, a rotating ball 303 rotates inside the rotating ring 302, a retractable threaded portion 304 is provided at the upper opening of the rotating ring 302, a tightening nut 305 is threadedly connected to the retractable threaded portion 304, a fixing rod 306 is installed on the upper end of the rotating ball 303, and the fixing rod 306 passes through the retractable threaded portion 304 and the tightening nut 305.

[0047] Specific implementation method nine: See Figure 7-10As shown, a weight ball 307 is installed at the lower end of the rotating ball 303 in this embodiment.

[0048] Further, the support 301 can be installed on the side wall of the box body 101 and the top of the box body 101. The inner cavity of the rotating ring 302 is a spherical ring structure. The diameter of the inner cavity of the rotating ring 302 is the same as that of the rotating ball 303. The upper end of the rotating ring 302 is provided with a retractable threaded portion 304. The retractable threaded portion 304 is annular, and its outer portion is provided with threads. The retractable threaded portion 304 is circumferentially provided with a plurality of retractable grooves that can be used for retraction, and the retractable grooves extend to the middle section of the rotating ring 302. The retractable grooves can open and lock the retractable threaded portion 304 and the rotating ring 302 at a small angle. The opening of the rotating ring 302 facilitates the installation of the rotating ball 303 into the rotating ring 302 and allows the rotating ball 303 to rotate freely; the locking of the rotating ring 302 is used to fix the rotating ball 303. The connection between the weight ball 307 and the rotating ball 303 is a rod-shaped structure, which passes through the lower opening of the rotating ring 302 and can swing at the lower opening of the rotating ring 302; the fixed rod 306 passes through the upper opening of the rotating ring 302 and can swing at the upper opening of the rotating ring 302. The weight ball 307 and the rotating ball 303 are connected by threads. When installing, the rotating ball 303 is first embedded in the rotating ring 302, and then the weight ball 307 is screwed into the threaded portion at the lower end of the rotating ball 303.

[0049] Specific implementation method ten: See Figure 7-10 As shown, in this embodiment, the upper end of the fixing rod 306 is provided with a mounting thread, and the fixing rod 306 is used to connect with the corner reflector.

[0050] Furthermore, because the device is used to install a corner reflector, the corner reflector needs to maintain a specific elevation angle during installation. If the elevation angle of the corner reflector is adjusted after it is fixed, the workload of the high-altitude operation will inevitably increase. Therefore, when installing the corner reflector, the corner reflector is first set to a fixed angle, and then installed on a horizontal installation site, and then the structure is set to achieve the vertical calibration function of the installation point. The tightening nut 305 is threadedly connected to the retractable threaded portion 304, and the thread diameter inside the tightening nut 305 tends to decrease from bottom to top. When the tightening nut 305 is completely screwed out of the retractable threaded portion 304, the shrinkage grooves on the retractable threaded portion 304 and the rotating ring 302 are opened at a small angle to facilitate the installation of the rotating ball 303; when the tightening nut 305 is rotated to the middle section of the retractable threaded portion 304, the tightening nut 305 can be installed on the retractable threaded portion 304, and the rotating ball 303 can be freely rotated; when the tightening nut 305 is completely locked with the retractable threaded portion 304, the gap of the shrinkage groove on the retractable threaded portion 304 is reduced, so that the rotating ring 302 locks the rotating ball 303 to fix the rotating ball 303.

[0051] When in use, the tightening nut 305 is loosened to allow the weight ball 307 to droop naturally until the weight ball 307 no longer shakes, and then the tightening nut 305 is tightened to fix the fixing rod 306 in a vertical state.

Claims

1. A fixing device for a CR target reflector, characterized in that: It comprises a box body (101), a slide rail (102), a sliding plate (103) and a magnet (104); the slide rails (102) are fixed on both sides of the box body (101); the sliding plate (103) slides on the slide rail (102); and the magnet (104) is installed at the lower end of the sliding plate (103); A support column (201) is fixed to the upper end of the sliding plate (103), a push plate (202) is fixed to the upper end of the support column (201), a rotating shaft (203) is rotatable on the box body (101), a cam (204) is fixed on the rotating shaft (203), the cam (204) is in contact with the lower end of the push plate (202), the cam (204) is used to push the push plate (202) to move upward, the rotating shaft (203) passes through the box body (101), and a rotating handle (205) is fixed on the rotating shaft (203) located outside the box body (101).

2. The fixing device for a CR target reflector according to claim 1, characterized in that: A tension spring (207) is installed on the slide rail (102), and the tension spring (207) is used to make the sliding plate (103) have a tendency to move downward. The far repose angle of the cam (204) is fixedly connected to a locking spring (208), and the other end of the locking spring (208) is fixedly connected to the top end of the box body (101).

3. The fixing device for a CR target reflector according to claim 1, characterized in that: An isolation box (105) is sleeved on the outer side of the box body (101), and the isolation box (105) is made of ferritic stainless steel.

4. The fixing device for a CR target reflector according to claim 1, characterized in that: An anti-collision plate (106) is installed at the lower end of the box body (101).

5. The fixing device for a CR target reflector according to claim 4, characterized in that: The anti-collision plate (106) is made of high-density polyethylene.

6. The fixing device for a CR target reflector according to claim 1, characterized in that: The magnet (104) is a neodymium magnet.

7. The fixing device for a CR target reflector according to claim 1, characterized in that: The box body (101) is made of aluminum-manganese alloy.

8. The fixing device for a CR target reflector according to claim 1, characterized in that: A support (301) is fixed on the outer side of the box body (101), a rotating ring (302) is provided at the end of the support (301), a rotating ball (303) rotates inside the rotating ring (302), a retractable threaded portion (304) is provided at the upper opening of the rotating ring (302), a tightening nut (305) is threadedly connected to the retractable threaded portion (304), a fixing rod (306) is installed on the upper end of the rotating ball (303), and the fixing rod (306) passes through the retractable threaded portion (304) and the tightening nut (305).

9. The fixing device for a CR target reflector according to claim 8, characterized in that: A counterweight ball (307) is installed at the lower end of the rotating ball (303).

10. The fixing device for a CR target reflector according to claim 8, characterized in that: The upper end of the fixing rod (306) is provided with a mounting thread, and the fixing rod (306) is used to be connected to the corner reflector.

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