CN216622438U - Sensor bracket for transient electromagnetic field measurement - Google Patents

Abstract

The utility model relates to the technical field of measuring equipment, and provides a sensor bracket for measuring a transient electromagnetic field. The lifting rod 1 is a hand-operated lifting rod and adopts a sleeve structure, the outermost sleeve and a lifting system are made of metal materials, the rest layers of sleeves are made of non-metal materials, the lifting of the lifting rod 1 is realized by the lifting system, the base 2 is made of metal materials, the specific shape of the base is set according to the actual task situation, and the lower bottom surface of the base 2 is respectively provided with a directional wheel 21 and a universal wheel 22 for moving a sensor support; the middle position of the base 2 is provided with a telescopic slide rail 24, two markers 25 with different sizes are welded at the telescopic end, the slide rail carries the markers 25 to move back and forth, and the support rod 3 is of a T-shaped structure, is made of metal materials and is arranged three at intervals of 120 degrees around the lifting rod 1. The utility model can fix and position the transient electromagnetic field sensor, and can maneuver in a small range, and can rapidly determine the distance and the angle between the sensor and a field source and the distance between the sensor and the ground.

Description

Sensor bracket for transient electromagnetic field measurement

Technical Field

The utility model relates to the technical field of measuring equipment, in particular to a sensor bracket for transient electromagnetic field measurement.

Background

The transient electromagnetic field is measured by mainly adopting sensors such as a TEM horn, a monopole sensor, a loaded dipole antenna and the like. Because the sensor type is various, the size difference is great, so measure support, anchor clamps a great variety, and the support needs to cooperate the anchor clamps appearance shape to select. Sensor holders that are common today include: tripods, upright type supports, rail type supports, arm type supports, etc., which have been used in electromagnetic field tests. In the field of transient electromagnetic field measurement, a tripod and a vertical column type support are widely adopted to erect a measurement sensor, for example, a TEM horn is usually supported by the tripod, and a monopole sensor is usually fixed by the vertical column type support. These types of stents have several common disadvantages during use:

(1) the main structure of the bracket is mainly made of metal materials, and the disturbance to a transient electromagnetic field is large;

(2) the support does not have the function of flexibly changing the measuring point and the height of the sensor, and the measuring point or the height needs to be changed and all equipment needs to be withdrawn and then be re-erected to a new measuring point, so that the personnel and time cost is consumed;

(3) it is difficult to quickly determine the relative position of the sensors, such as the distance from the sensor to the ground, the distance from the sensor to the field source, and the angle from the sensor to the field source;

(4) when the erection height is high or the weight of the sensor is large, a counterweight needs to be additionally arranged at the bottom, and safety risks exist in the testing process.

Disclosure of Invention

The utility model aims to provide a sensor support for transient electromagnetic field measurement, which solves the technical problems that the main structure of the existing sensor support is made of metal materials, the transient electromagnetic field is greatly disturbed, the functions of flexibly changing the measuring point and measuring height of a sensor are not realized, and the relative position of the sensor is difficult to determine.

In order to solve the technical problems and achieve the purpose, the technical scheme of the utility model is as follows:

a sensor bracket for transient electromagnetic field measurement is characterized by specifically comprising a lifting rod 1, a base 2, a supporting rod 3 and an object carrying platform 4;

the lifting rod 1 is a hand-operated lifting rod and adopts a sleeve structure, the outermost sleeve and the lifting system are made of metal materials, the rest layers of sleeves are made of non-metal materials, the inner wall of each layer of non-metal sleeve is provided with a groove 16 for preventing the lifting rod 1 from generating self-rotation of a rod body in the lifting process to damage the lifting system, a stay wire and a pulley block, the outer side of each non-metal sleeve is provided with a bulge matched with the groove 16, so that the groove 16 is buckled on the bulge, the size of the groove of each layer of sleeves is increased along with the reduction of the size of the sleeves, and the grooves of all the sleeves are well combined; the flange plate 11 at the bottom of the lifting rod 1 is connected with the base 2 through bolts; a flange plate at the bottom end of the loading platform 4 is connected with a flange plate 12 at the top of the lifting rod 1; the non-metal sleeve layer is provided with a white mark for displaying the current lifting height;

the lifting of the lifting rod 1 is realized by a lifting system, the lifting system comprises a hand-operated driving part, a transmission device, a steel wire stay wire and a pulley block, the hand-operated driving part is positioned in the middle of the outermost sleeve of the lifting rod, each layer of sleeve is externally provided with a traction lifting steel wire stay wire, the top end of each layer of sleeve is provided with a metal hoop 18, the pulley block is welded on the metal hoop 18, the steel wire stay wire passes through the metal hoop 18 after overlapping the pulley, the steel wire stay wire is led out from the hole on the metal hoop 18 to the next layer, and the lifting of the lifting rod 1 is realized by the up-and-down traction of the two external steel wire stay wires between each layer;

the base 2 is made of metal materials, the specific shape of the base is set according to the actual task situation, and the lower bottom surface of the base 2 is respectively provided with a directional wheel 21 and a universal wheel 22 which are connected with the base 2 in a riveting mode and used for moving the sensor support; the two sides of the top surface of the base 2 are provided with handles 23, the middle of the base 2 is provided with a telescopic slide rail 24, two markers 25 with different sizes are welded at the telescopic end, the slide rail carries the markers 25 to move back and forth, the size of the rear marker needs to be larger than that of the front marker in front view, at least half of the rear marker needs to be exposed, when the size of the sensor is larger, the front marker is used for aligning the mouth surface of the sensor or positioning the sensor by other characteristic points, when the size of the sensor is smaller, the rear marker is used for positioning the sensor, the positions of the mouth surface of the sensor and the markers can be calibrated by using a plumb line or a laser pen, and the distance and the angle between the mouth surface of the sensor and a field source are measured by other distance or angle measuring equipment after calibration is finished;

the three support rods 3 are T-shaped structures, are made of metal materials and are arranged at intervals of 120 degrees around the lifting rod 1, the support rods 3 are connected with the lifting rod 1 through a first connecting piece 13 and a second connecting piece 14 which are fixed on the lifting rod 1, and each support rod 3 comprises a fixed end 32, a telescopic end 33 and a rotating end 34; the telescopic end 33 is used for supporting the ground, the fixed end 32 and the telescopic end 33 are collinear, a fixing nut 36 and an anchor ear 35 are arranged at the joint of the fixed end 32 and the telescopic end 33, the telescopic end 33 is adjusted in length through the fixing nut 36, and the rotating end 34 is adjusted in position and rotation angle of the rotating shaft through the anchor ear 35 and the anchor ear nut, so that the unfolding angle of the support rod 3 is adjusted.

Furthermore, a stay wire fixing ring 15 is arranged below the top flange plate 12 and used for pulling a stay wire when wind power is large or the height of the stay wire is high, and the stability and the safety in the test process are enhanced through the stay wire fixing.

Furthermore, the bottom of the telescopic end 33 is provided with a fixing plate 31, the fixing plate 31 is adjustable in angle and provided with a hole so as to match the expansion angle of the support rod 3, and a fixing pile can be driven into the hole for fixing.

Furthermore, the existing sensor clamp can be used for directly replacing the loading platform 4, and the sensor clamp is connected with the flange 12 at the top end of the lifting rod 1.

Furthermore, the carrying platform 4 is made of insulating materials, a flange plate is arranged at the bottom end, a carrying plate 41 is arranged at the top end, a supporting column 42 is arranged in the middle, the flange plate at the bottom end is connected with the flange plate 12 at the top of the lifting rod, and the carrying plate 41 is used for fixing the transient electromagnetic field sensor; 4 tops of objective platform hold thing board 41 dismantled and assembled and change, hold and have screw and baffle on the thing board, sensor anchor clamps such as screw accessible bolted connection cloud platform, holder, but the baffle is plug, and the less sensor of part size can directly be placed in the baffle.

Further, the length of the supporting column 42 should not be less than 0.5m to avoid the influence of scattering of the rod body on the sensor measurement.

Further, the height mark is added in a paint spraying mode, the adding position is between the pull line and the groove, and the height mark is prevented from being shielded in the lifting process.

Further, in order to keep the appearance neat and compact, the height mark is only added on the surface of the penultimate layer, the size of the height mark is increased from high to low, the minimum height mark value should exceed the length of the lifting rod 1 when the lifting rod is completely retracted, and the actual distance d between two division values is H/(n-1), wherein H is a target division value, and n is the total number of knots.

Further, the outermost sleeve of the lifting rod 1, the lifting device and the metal hoop 18 are made of aluminum magnesium alloy, the base 2 is made of steel, and the support rod 3 is made of aluminum alloy.

Furthermore, the non-metal sleeve of the lifting rod 1 is made of carbon fiber, and the carrying platform 4 is made of non-metal materials such as glass fiber reinforced plastics and nylon.

The utility model has the beneficial effects that:

(1) the transient electromagnetic field sensor can be fixed and positioned, small-range maneuvering is carried out, and the bracket and the sensor can be integrally moved if a measuring point or height needs to be changed; the distance and the angle between the sensor and the field source can be rapidly determined by measuring the distance and the angle between the field source and the marker, and the distance between the sensor and the ground can be determined by the height identification;

(2) the lifting rod sleeve is mainly made of non-metal materials, the carrying platform is made of insulating materials, disturbance of a transient electromagnetic field around the sensor is effectively reduced, and measurement accuracy is improved;

(3) the base, the outermost sleeve of the lifting rod and the supporting rod are made of metal materials, so that the weight is large, and the base, the outermost sleeve of the lifting rod and the supporting rod are fixed together through the universal wheel, the supporting rod and the pull rope without additionally adding a balance weight;

(4) the device is convenient and simple to disassemble and assemble, the positions and the number of the measuring points can be adjusted at will according to the measuring requirements and the number of the probes, and after the sensor bracket is erected, personnel do not need to operate the sensor bracket, so that the personnel cost is reduced.

Drawings

FIG. 1 is a schematic view of a sensor holder according to the present invention;

FIG. 2 is a schematic view of the lift pins of the present invention shown deployed;

FIG. 3 is a schematic view of a support rod according to the present invention;

FIG. 4 is a schematic view of a carrier platform according to the present invention;

FIG. 5 is a schematic view of the connection hole and the connection bolt of the present invention;

in the figure, 1-a lifting rod, 11-a flange plate for connecting the lifting rod with a base, 12-a flange plate for connecting the lifting rod with a carrying platform, 13-a connecting piece for the rotating end of a supporting rod, 14-a connecting piece for the fixed end of the supporting rod, 15-a fixed ring for a stay wire, 16-a groove, 17-a pulley and 18-a ferrule; 2-base, 21-directional wheel, 22-universal wheel, 23-handle, 24-sliding rail, 25-marker; 3-support bar, 31-fixing plate, 32-support bar fixing end, 33-support bar telescopic end, 34-support bar rotating end, 35-hoop and 36-fixing nut; 4-carrying platform, 41-carrying plate, 42-supporting column and 43-supporting column fixing hoop.

Detailed Description

The utility model is illustrated and described in detail below with reference to the figures and the specific embodiments.

The sensor bracket for transient electromagnetic field measurement provided by the utility model is shown in fig. 1 and comprises a lifting rod 1, a base 2, a supporting rod 3 and an object carrying platform 4.

As shown in fig. 1 to 3, the sensor holder of the present invention is used in the following steps:

1. the sensor arrangement position is confirmed, the sensor support is moved to a target point or assembled at the target point, and the assembly sequence is that the lifting rod 1 is connected with the base 2, the supporting rod 3 and the lifting rod 1 are connected, the sensor is fixed on the carrying platform 4, and the carrying platform and the lifting rod are connected. The anchor ear 35 and the fixing nut 36 are used for adjusting the telescopic end 33, the rotating end 34 and the fixing plate 31 of the support rod 3, so as to ensure that the support rod is stressed uniformly and supported stably, and the anchor ear 35 and the fixing nut 36 are locked;

2. fixing the transient electromagnetic field sensor on the object carrying platform 4, sliding the sliding rail 24 to align any marker 25 with the mouth surface of the sensor, and measuring the distance and the angle between the marker 25 and the transient electromagnetic field generating device by using a meter ruler or a laser range finder, namely the distance and the angle from the mouth surface of the sensor to the transient electromagnetic field generating device;

3. if the position or the direction of the sensor needs to be adjusted, the anchor ear 35 and the fixing nut 36 are adjusted to withdraw the support rod 3 and temporarily fix the support rod, the handle 23 is pulled or the lifting rod 1 is pushed, and the sensor bracket is moved to a new target point;

4. fixing the support rod 3 again, lifting the lifting rod 1 to a specified height, and reading out the current height through the height mark, namely the distance between the sensor and the ground;

5. if the rope needs to be pulled, the rope is fixed on the rope-pulling fixing ring 15 before the lifting rod 1 is lifted, and the other end of the rope is fixed after the lifting is finished;

6. after the sensors are arranged, the hoop 35, the fixing nut 36 and the universal wheel 22 are locked, and then the measurement can be started.

As shown in fig. 1, 4 and 5, the connection bolt can be drawn out from the connection hole, and when the support rod 3 and the lifting rod 1 are connected, the connection bolt needs to be inserted and fixed, and the specific method is as follows: one end of the connecting bolt is punched, and an iron wire or other hard materials are inserted into the newly punched hole after the connecting hole is inserted, so that the connecting bolt is ensured not to fall off from the connecting hole in the use process.

As shown in fig. 1, two markers 25 are welded on a slide rail 24, according to the size and the position of the mouth surface of the sensor, any marker 25 can be used to align with a characteristic point or the mouth surface of the sensor, the characteristic point is projected in a base to align with a rear marker, a front marker is aligned outside the base, a plumb line is hung by adopting the characteristic point or a laser pen is vertically placed on the marker during alignment, and the slide rail is adjusted until the plumb line vertically contacts with the markers or the light spot of the laser pen is aligned with the characteristic point; when the sensor support moves, the ground has local unevenness or a ditch ridge, and one end of the sensor support can be slightly lifted up and passed by the handle 23.

As shown in fig. 1 and 2, when the sensor bracket needs to be temporarily removed, the telescopic end 33 of the support rod can be retracted into the fixed end 32, the position of the anchor ear 35 is adjusted, the rotating end 34 is as close to the lifting rod 1 as possible, and finally the entire structure of the support rod 3 is retracted into the base 2, and moves together with the base 2, and during the moving process, the fixing nut needs to be locked.

As shown in fig. 1 and 3, the support rod 1 and the object platform 4 are connected by flanges, and the object bearing plate 41 and the support column 42 of the object platform 4 are connected by flanges. When the transient electromagnetic pulse sensor is fixed, the sensor and the sensor clamp can be directly fixed on the object bearing plate 41, or the object bearing plate 41 is replaced by a special clamp, so that the sensor and the sensor clamp are directly fixed on the supporting column 42. When anchor clamps or sensor size were too big, can dismantle objective platform 4, pass through flange and lifter 1 lug connection with sensor and anchor clamps.

Example 1

In an embodiment, the following dimensions or requirements are used for the components: the lifting range of the lifting rod 1 is 2-10m, 7 layers of sleeves are arranged, the height mark graduation is 100mm, and the mark is started from a position of 2.5 m; the diameter of the outermost sleeve is 160mm, the height of the outermost sleeve is 2m, a metal material is used, the rest part of the outermost sleeve is made of carbon fiber, the metal material is wear-resistant and can be used as a protective shell, the carbon fiber is lighter and lighter, and the quality of the lifting rod and the disturbance to a transient electromagnetic field can be effectively reduced; the length and width of the base 2 is 1m multiplied by 0.8m multiplied by 10mm, the height of the lower bottom surface from the ground is 150mm, the height of the handle 23 is 150mm, the length of the slide rail is 250mm when the slide rail is closed, the length of the slide rail is 600mm when the slide rail is completely unfolded, the height and width of one of the markers 25 is 100mm multiplied by 70mm multiplied by 5mm, the length and width of the other marker are consistent, and the height is half; the length of the fixed end 32 of the support rod is 1.5m, the length of the telescopic end 33 is 1.5m, the length of the rotating end 34 is 1.2m, the telescopic end 33 can be completely retracted into the fixed end 32 except for the fixed plate 31, and the rotating range of the rotating end is 0-180 degrees (calculated by the fixed end 32 being 0 degree); the objective platform 4 uses glass steel material, and the screw is the nylon materials to effectively reduce the disturbance to being surveyed transient electromagnetic field, promote measurement accuracy, support column 42 is hollow structure, and long 0.5m, diameter 50 mm. The measuring bracket can bear 10kg without adding a pull rope and can be normally used under 4-level wind power.

The above embodiments are only examples of the present invention, and are not exhaustive. Any obvious modifications thereto, without departing from the principles of the utility model, should be considered to be within the scope of the claims.

Claims (10)

1. A sensor bracket for transient electromagnetic field measurement is characterized by specifically comprising a lifting rod (1), a base (2), a supporting rod (3) and an object carrying platform (4);

the lifting rod (1) is a hand-operated lifting rod and adopts a sleeve structure, the outermost sleeve and a lifting system are made of metal materials, the rest layers of sleeves are made of non-metal materials, a groove (16) is formed in the inner wall of each layer of non-metal sleeve and used for preventing the lifting rod (1) from self-rotating to damage the lifting system, a stay wire and a pulley block in the lifting process, a protrusion is arranged on the outer side of each non-metal sleeve in a matching manner with the groove (16), so that the groove (16) is buckled on the protrusion, and the size of the groove of each layer of sleeves is increased along with the reduction of the size of the sleeves so as to ensure the combination of the grooves of the sleeves; a flange plate (11) at the bottom of the lifting rod (1) is connected with the base (2) through bolts; a flange plate at the bottom end of the loading platform (4) is connected with a flange plate (12) at the top of the lifting rod (1); the non-metal sleeve layer is provided with a white mark for displaying the current lifting height;

the lifting of the lifting rod (1) is realized by a lifting system, the lifting system comprises a hand-operated driving part, a transmission device, a steel wire stay wire and a pulley block, the hand-operated driving part is positioned in the middle of the outermost sleeve of the lifting rod, each layer of sleeve is externally provided with a traction lifting steel wire stay wire, the top end of each layer of sleeve is provided with a metal hoop (18), the pulley block is welded on the metal hoop (18), the steel wire stay wire passes through the metal hoop (18) after being lapped with the pulley, the steel wire stay wire is led out from an upper hole of the metal hoop (18) to the next layer, and the lifting of the lifting rod (1) is realized by up-and-down traction of the two external steel wire stay wires between each layer;

the base (2) is made of metal materials, the specific shape of the base is set according to the actual task situation, and the lower bottom surface of the base (2) is respectively provided with a directional wheel (21) and a universal wheel (22) which are connected with the base (2) in a riveting mode and used for moving the sensor support; handles (23) are arranged on two sides of the upper top surface of the base (2), a telescopic sliding rail (24) is arranged in the middle of the base (2), two markers (25) different in size are welded at the telescopic end, the sliding rail carries the markers (25) to move back and forth, the size of the rear marker needs to be larger than that of the front marker in front view, at least one half of the rear marker needs to be exposed, the front marker is used for aligning the mouth surface of the sensor or positioning the sensor by using a characteristic point, or the rear marker is used for positioning the sensor, the positions of the mouth surface of the sensor and the markers can be calibrated by using a plumb line or a laser pen, and the distance and the angle between the mouth surface of the sensor and a field source are measured by distance or angle measuring equipment after calibration is finished;

the support rods (3) are of T-shaped structures, are made of metal materials and are arranged at intervals of 120 degrees around the lifting rod (1), the three support rods are arranged, the support rods (3) are connected with the lifting rod (1) through first connecting pieces (13) and second connecting pieces (14) fixed on the lifting rod (1), and the support rods (3) comprise fixed ends (32), telescopic ends (33) and rotating ends (34); the telescopic end (33) is used for being supported on the ground, the fixed end (32) and the telescopic end (33) are collinear, a fixing nut (36) and an anchor ear (35) are arranged at the joint of the fixed end (32) and the telescopic end (33), the length of the telescopic end (33) is adjusted through the fixing nut (36), and the position and the rotating angle of the rotating shaft are adjusted through the anchor ear (35) and the anchor ear nut at the rotating end (34), so that the unfolding angle of the supporting rod (3) is adjusted.

2. The sensor support for transient electromagnetic field measurement according to claim 1, characterized in that a stay wire fixing ring (15) is arranged below the top flange (12) for pulling the stay wire under high wind or high altitude, and the stability and safety during the test process are enhanced by the stay wire fixing.

3. The sensor support for transient electromagnetic field measurement as claimed in claim 2, wherein the bottom of the telescopic end (33) is provided with a fixing plate (31), the fixing plate (31) is angularly adjustable and provided with a hole to match the expansion angle of the support rod (3) and can be fixed by driving a fixing pile into the hole.

4. A sensor holder for transient electromagnetic field measurements according to claim 1, characterized in that the carrier platform (4) is directly replaced by an existing sensor holder, which is connected to the top flange (12) of the lifting rod (1).

5. The sensor support for transient electromagnetic field measurement according to claim 4, wherein the carrier platform (4) is made of insulating material, and has a flange at the bottom end, a carrier plate (41) at the top end, a support column (42) in the middle, the flange at the bottom end is connected with the flange (12) at the top end of the lifting rod, and the carrier plate (41) is used for fixing the transient electromagnetic field sensor; the top of the object carrying platform (4) is detachably and replaceably provided with an object bearing plate (41), the object bearing plate is provided with a screw hole and a partition plate, the screw hole can be connected with a holder sensor clamp through a bolt, the partition plate can be plugged and pulled, and a sensor matched with part of sizes can be directly placed in the partition plate.

6. A sensor holder for transient electromagnetic field measurements according to claim 5, characterized in that the support columns (42) have a length not less than 0.5m to avoid the influence of rod scattering on the sensor measurements.

7. The sensor bracket for transient electromagnetic field measurement according to claim 1, wherein the mark of the elevation height is added by painting, and the added position is between the pull line and the groove, so as to avoid the mark being blocked in the elevation process.

8. The sensor support for transient electromagnetic field measurement according to claim 7, wherein, in order to keep the appearance neat and compact, the indication of the elevating height is only added on the surface of the penultimate layer, the indication of the elevating height increases from high to low, the minimum indication value should exceed the length of the elevating rod (1) when the elevating rod is completely retracted, and the actual distance between two division values is H/(n-1), wherein H is the target division value, and n is the total number of nodes.

9. The sensor support for transient electromagnetic field measurement according to any one of claims 1-8, wherein the outermost sleeve, the lifting device and the ferrule (18) of the lifting rod (1) are made of aluminum-magnesium alloy, the base (2) is made of steel, and the supporting rod (3) is made of aluminum alloy.

10. The sensor support for transient electromagnetic field measurement according to any one of claims 1-8, wherein the non-metallic sleeve of the lifting rod (1) is made of carbon fiber, and the carrier platform (4) is made of glass fiber reinforced plastic and nylon non-metallic material.

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