Receiving device suitable for road detection

Abstract

The invention relates to the technical field of detection devices, in particular to a receiving device suitable for road detection, which comprises a transmission shaft, a bull wheel framework is fixedly mounted on the outer side of the transmission shaft, and a rubber sleeve is fixedly mounted on the outer side surface of the circumference of the bull wheel framework; an annular oil groove is formed in the outer side face of the circumference of the bull wheel framework. The rubber sleeve seals the outer end face, away from the transmission shaft, of the annular oil groove. A piezoelectric detector is fixedly arranged on the side face, close to the transmission shaft, of the annular oil groove. The annular oil groove is filled with an oil medium in a sealing manner; according to the technical scheme, the detection efficiency of the voltage detector can be improved, the working intensity is reduced, and meanwhile, the uniformity of each detection position is improved.

Description

Technical Field

[0001] This invention relates to the field of detection device technology, and in particular to a receiving device suitable for road detection. Background Technology

[0002] In existing technologies, road detection receiving devices are generally used to rapidly detect deep underground defects in urban road surfaces and other conditions. These devices employ methods such as seismic reflection and energy attenuation to quickly analyze the detection results, compensating for the insufficient detection depth of ground-penetrating radar in detecting road defects. Road detection receiving devices typically acquire signals using voltage detectors.

[0003] In existing technologies, when acquiring signals, the voltage detector is laid flat on the ground. Each operation requires fixing the voltage detector to the ground before acquisition can begin. After acquiring a signal at one location, the voltage detector needs to be moved to the next location for acquisition. Although this acquisition method can complete the acquisition work, the workload of the detection process is large, and the detection position cannot be guaranteed to be uniform. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a receiving device suitable for road detection, which can improve the detection efficiency of voltage detectors, reduce workload, and improve the uniformity of detection locations.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this application discloses a receiving device suitable for road detection, including a drive shaft, a large wheel frame fixedly mounted on the outside of the drive shaft, a rubber sleeve fixedly mounted on the outer circumference of the large wheel frame, an annular oil groove formed on the outer circumference of the large wheel frame, the rubber sleeve sealing the outer end face of the annular oil groove away from the drive shaft, a piezoelectric detector fixedly mounted on the side of the annular oil groove near the drive shaft, and an oil medium sealed and filled inside the annular oil groove.

[0008] Preferably, the large wheel frame includes a first support plate, a second support plate, an annular mounting plate, a first fixing plate, and a second fixing plate; the first and second support plates are circular in shape, parallel to each other, and fixed at intervals on the drive shaft; the annular mounting plate, the first fixing plate, and the second fixing plate are annular; the diameter of the annular mounting plate is smaller than the diameter of the first and second support plates; the two ends of the axis of the annular mounting plate are fixedly connected between the first and second support plates, and the annular mounting plate, the first support plate, and the second support plate are coaxially arranged; the outer side of the annular mounting plate, the first support plate, and the second support plate enclose the annular oil groove; the first fixing plate and the second fixing plate have the same diameter as the first support plate; the first fixing plate is fixedly connected to the outer edge of the first support plate, and the second fixing plate is fixedly connected to the outer edge of the second support plate, with the first fixing plate located on the side of the first support plate away from the annular oil groove, and the second fixing plate located on the side of the second support plate away from the annular oil groove; the first fixing plate and the second fixing plate are respectively fixedly connected to the rubber sleeve.

[0009] Preferably, the annular mounting plate has detection holes spaced at equal angles along the circumference. The piezoelectric detector is fixed on the annular mounting plate and is located on the side of the annular mounting plate closer to the drive shaft. The detection end of the piezoelectric detector is located in the detection hole, and each detection hole corresponds to one piezoelectric detector.

[0010] Preferably, a sealing cylinder is provided on the side of the annular mounting plate near the annular oil groove, the sealing cylinder is fastened to one of the detection holes, and the interior of the sealing cylinder is separated from the annular oil groove.

[0011] Preferably, a front cover plate and a rear cover plate are respectively provided at both ends of the large wheel frame in the direction perpendicular to the axis of the drive shaft. The front cover plate is connected to the first fixing plate, and the rear cover plate is connected to the second fixing plate. Multiple connecting columns are provided between the front cover plate and the first support plate, and between the rear cover plate and the second support plate.

[0012] Preferably, a first mounting cavity is formed between the first support plate and the front cover plate, and a signal acquisition box and a control box are fixedly disposed in the first mounting cavity and on the first support plate; a second mounting cavity is formed between the second support plate and the rear cover plate, and a power supply is fixed in the second mounting cavity and on the second support plate.

[0013] Preferably, an oil injection pipe is fixedly provided on the first support plate or the second support plate. The oil injection pipe is connected to the annular oil groove. The end of the oil injection pipe away from the annular oil groove is located in the first mounting cavity or the second mounting cavity and is detachably and sealed with an end cap.

[0014] Preferably, both the first support plate and the second support plate are provided with multiple connection ports, and the connection ports are all located on the inner side of the annular mounting plate.

[0015] Preferably, the drive shaft and the second support plate are connected by a locking assembly.

[0016] Preferably, the locking assembly includes a support sleeve fitted onto the drive shaft. A mounting plate is integrally formed at one end of the support sleeve, which is fitted to the second support plate and fixedly connected by a first bolt. A first locking hole is radially formed on the support sleeve, and at least two of the first locking holes are spaced apart circumferentially. A second locking hole is formed on the drive shaft, and the first and second locking holes are concentrically arranged. A second bolt is disposed within both the first and second locking holes, passing through the first locking hole and threadedly connected to the second locking hole.

[0017] (III) Beneficial Effects

[0018] This invention provides a receiving device suitable for road detection. A drive shaft drives a large wheel frame to rotate. An annular oil groove and a rubber sleeve sealing the groove are located on the outside of the wheel frame. The device's movement and detection position are controlled by rolling. A piezoelectric detector is located on the wheel frame near the rubber sleeve. During operation, the outer rubber sleeve is in contact with the ground. Because the annular oil groove is filled with an oily medium, when the outer rubber sleeve receives a vibration signal, it can be transmitted accurately and promptly to the piezoelectric detector through the oil medium, facilitating waveform signal collection. The roller-type movement method facilitates speed control, and the equidistant distance between adjacent piezoelectric detectors ensures uniform detection positions. This reduces labor costs and improves the uniformity of the detection data. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a receiving device suitable for road detection according to the present invention;

[0020] Figure 2 This is a cross-sectional view of a receiving device for road detection according to the present invention;

[0021] Figure 3 To highlight the present invention Figure 2 Enlarged view of the A-structure in the middle;

[0022] Figure 4 This is a cross-sectional view highlighting the layout of the piezoelectric detector in this invention.

[0023] Marked in the attached diagram:

[0024] 100. Drive shaft; 110. Second locking hole; 200. Large wheel frame; 210. First support plate; 211. Connecting port; 220. Second support plate; 230. Annular mounting plate; 231. Detection hole; 240. First fixing plate; 250. Second fixing plate; 260. Annular oil groove; 270. Sealing cylinder; 280. Oil injection pipe; 281. End cap; 300. Rubber sleeve; 400. Piezoelectric detector; 500. Locking assembly; 510. Support sleeve; 5111. First locking hole; 520. Mounting plate; 530. First bolt; 540. Second bolt; 600. Front cover plate; 610. Connecting column; 620. First mounting cavity; 630. Rear cover plate; 640. Second mounting cavity; 700. Signal acquisition box; 800. Control box; 900. Power supply. Detailed Implementation

[0025] 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Example

[0027] This invention provides a receiving device suitable for road detection, see [link to relevant documentation]. Figure 1 and Figure 2 The system includes a drive shaft 100, a large wheel frame 200 fixedly mounted on the outside of the drive shaft 100, and a rubber sleeve 300 fixedly mounted on the outer circumference of the large wheel frame 200. An annular oil groove 260 is formed on the outer circumference of the large wheel frame 200. The rubber sleeve 300 seals the outer end face of the annular oil groove 260 away from the drive shaft 100. A piezoelectric detector 400 is fixedly installed on the side of the annular oil groove 260 near the drive shaft 100. The annular oil groove 260 is sealed and filled with an oily medium. During operation, the drive shaft 100 controls the large wheel frame 200 to move on the ground. During this movement, the outer rubber sleeve 300 contacts the ground. Because the annular oil groove 260 is filled with an oily medium, when the outer rubber sleeve 300 receives a vibration signal, it can transmit it accurately and promptly to the piezoelectric detector 400 through the oily medium, facilitating the collection of waveform signals by the piezoelectric detector 400.

[0028] See Figures 2 to 4Specifically, the large wheel frame 200 includes a first support plate 210, a second support plate 220, an annular mounting plate 230, a first fixing plate 240, and a second fixing plate 250.

[0029] The first support plate 210 and the second support plate 220 are circular in shape, and are parallel to each other and fixed to the drive shaft 100 at intervals.

[0030] The drive shaft 100 and the second support plate 220 are fixedly connected by a locking assembly 500. The locking assembly 500 includes a support sleeve 510, which is sleeved on the drive shaft 100. A mounting plate 520 is integrally formed at one end of the support sleeve 510. The mounting plate 520 fits against the second support plate 220 and is fixedly connected by a first bolt 530. A first locking hole 5111 is radially provided on the support sleeve 510, and at least two first locking holes 5111 are spaced apart in the circumferential direction. A second locking hole 110 is provided on the drive shaft 100, and the first locking hole 5111 and the second locking hole 110 are concentrically arranged. A second bolt 540 is provided in the first locking hole 5111 and the second locking hole 110. The second bolt 540 passes through the first locking hole 5111 and is threadedly connected to the second locking hole 110. After installation, the second support plate 220 can be fixedly connected to the drive shaft 100. When the drive shaft 100 rotates, it can drive the second support plate 220 to rotate synchronously.

[0031] Among them, the annular mounting plate 230, the first fixing plate 240 and the second fixing plate 250 are annular.

[0032] The diameter of the annular mounting plate 230 is smaller than the diameters of the first support plate 210 and the second support plate 220. The two ends of the central axis of the annular mounting plate 230 are fixedly connected between the first support plate 210 and the second support plate 220, and the annular mounting plate 230, the first support plate 210, and the second support plate 220 are coaxially arranged. After fixing the annular mounting plate 230, the outer surface of the annular mounting plate 230, the first support plate 210, and the second support plate 220 together form an annular oil groove 260. The piezoelectric detector 400 is fixed to the annular mounting plate 230. Through the connection of the first support plate 210, the second support plate 220, the annular mounting plate 230, and the rubber sleeve 300, an annular oil groove 260 is formed between the rubber sleeve 300 and the annular mounting plate 230. The piezoelectric detector 400 can be fixedly connected to the side of the annular mounting plate 230 away from the annular oil groove 260.

[0033] The first fixing plate 240 and the second fixing plate 250 have the same diameter as the first support plate 210. The first fixing plate 240 is fixedly connected to the outer edge of the first support plate 210, and the second fixing plate 250 is fixedly connected to the outer edge of the second support plate 220. The first fixing plate 240 is located on the side of the first support plate 210 away from the annular oil groove 260, and the second fixing plate 250 is located on the side of the second support plate 220 away from the annular oil groove 260. The first fixing plate 240 and the second fixing plate 250 are respectively fixedly connected to the rubber sleeve 300. After the rubber sleeve 300 is fixedly connected, it can seal the annular oil groove 260. The first fixing plate 240 and the second fixing plate 250 can support and fix the rubber sleeve 300.

[0034] The annular mounting plate 230 has multiple detection holes 231 spaced at equal angles along its circumference. A piezoelectric detector 400 is fixed to the annular mounting plate 230, with the detector 400 located on the side of the annular mounting plate 230 closest to the drive shaft 100. The detection end of the piezoelectric detector 400 is located within the detection hole 231, and each detection hole 231 corresponds to one piezoelectric detector 400. In the design, the distance between adjacent detection holes 231 is the same. Therefore, during the movement of the device controlled by the drive shaft 100, the detection position of the piezoelectric detector 400 can be ensured to be uniform.

[0035] Furthermore, a sealing cylinder 270 is provided on one side of the annular mounting plate 230 near the annular oil groove 260. The sealing cylinder 270 is fastened to one of the detection holes 231, and the interior of the sealing cylinder 270 is separated from the annular oil groove 260. The sealing cylinder 270 isolates one of the piezoelectric detectors 400, thus ensuring that the piezoelectric detector 400 inside the sealing cylinder 270 remains unaffected during the detection process. This allows it to serve as a reference, facilitating the removal or reduction of noise and interference waves during the recording process.

[0036] A front cover plate 600 and a rear cover plate 630 are respectively provided on the large wheel frame 200 at both ends in the direction of the vertical transmission shaft 100 axis. The front cover plate 600 is connected to the first fixing plate 240, and the rear cover plate 630 is connected to the second fixing plate 250.

[0037] Multiple connecting posts 610 are provided between the front cover plate 600 and the first support plate 210, and between the rear cover plate 630 and the second support plate 220. During operation, the front cover plate 600 and the rear cover plate 630 support the first fixing plate 240 and the second fixing plate 250. At the same time, the connecting posts 610 fix the front cover plate 600 and the rear cover plate 630 to the first support plate 210 and the second support plate 220, so that the front cover plate 600, the rear cover plate 630, the first fixing plate 240, and the second fixing plate 250 can form an integral whole with the first support plate 210 and the second support plate 220, avoiding or reducing additional noise and interference waves generated during operation.

[0038] A first mounting cavity 620 is formed between the first support plate 210 and the front cover plate 600. A signal acquisition box 700 and a control box 800 are fixedly installed in the first mounting cavity 620 and on the first support plate 210. The acquisition box collects the signal detected by the piezoelectric detector 400 and processes the signal.

[0039] A second mounting cavity 640 is formed between the second support plate 220 and the rear cover plate 630. A power supply 900 is fixed in the second mounting cavity 640 and on the second support plate 220. Two power supplies 900 are provided: one is a 24V battery, and the other is a 12V battery. The power supply 900 supplies power to the control box 800 and the piezoelectric detector 400.

[0040] Since the first mounting cavity 620 and the second mounting cavity 640 are respectively located on the two sides of the first support plate 210 and the second support plate 220, the data acquisition box, the control box 800 and the power supply 900 can be installed and fixed. At the same time, by installing the data acquisition box, the control box 800 and the power supply 900 on both sides of the first support plate 210 and the second support plate 220 respectively, the weight on both sides of the first support plate 210 and the second support plate 220 is more balanced, and the force on the rubber sleeve 300 is more even during operation.

[0041] Better still, in one embodiment, the piezoelectric detector 400 is a piezoelectric accelerometer, and the frequency band of the seismic data for shallow strata below 10 meters (in the case of hammer-driven seismic sources) is 40-750Hz. The detector core must meet the above frequency band range, and the sensitivity requirement is above 200mV / m / s-2.

[0042] An oil injection pipe 280 is fixedly installed on the first support plate 210 or the second support plate 220. The oil injection pipe 280 connects to the annular oil groove 260. One end of the oil injection pipe 280 away from the annular oil groove 260 is located in the first mounting cavity 620 or the second mounting cavity 640 and is detachably and sealingly connected to an end cap 281. Oil medium can be injected into the annular oil groove 260 through the oil injection pipe 280.

[0043] Multiple connection ports 211 are provided on both the first support plate 210 and the second support plate 220, and the connection ports 211 are all located on the inner side of the annular mounting plate 230. By providing connection ports 211, the weight of the first support plate 210 and the second support plate 220 can be reduced to a certain extent.

[0044] An annular oil groove 260 and a rubber sleeve 300 sealing the annular oil groove 260 are set on the outside of the large wheel frame 200. The movement of the equipment and the movement of the detection position are controlled by rolling. The piezoelectric detector 400 is located on the large wheel frame 200 near the rubber sleeve 300. During operation, the outer rubber sleeve 300 is in contact with the ground. Since the annular oil groove 260 is filled with an oil medium, when the outer rubber sleeve 300 receives a vibration signal, it can be transmitted to the piezoelectric detector 400 in a timely and accurate manner through the oil medium, which facilitates the collection of waveform signals by the piezoelectric detector 400. The roller-type movement method facilitates speed control, and the equidistant distance between adjacent piezoelectric detectors 400 ensures uniform detection position. This reduces labor costs and improves the uniformity of detection data.

[0045] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Without conflict, the embodiments and features in the embodiments of this invention can be combined with each other.

[0047] The embodiments described above are merely illustrative of implementation methods of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A receiving device suitable for road detection, comprising a drive shaft (100), a large wheel frame (200) fixedly mounted on the outside of the drive shaft (100), a rubber sleeve (300) fixedly mounted on the outer circumferential surface of the large wheel frame (200); an annular oil groove (260) formed on the outer circumferential surface of the large wheel frame (200); the rubber sleeve (300) sealing the outer end face of the annular oil groove (260) away from the drive shaft (100); a piezoelectric detector (400) fixedly disposed on the side of the annular oil groove (260) near the drive shaft (100); and an oil medium sealed and filled inside the annular oil groove (260).

2. A receiving device suitable for road detection according to claim 1, characterized in that, The large wheel frame (200) includes a first support plate (210), a second support plate (220), an annular mounting plate (230), a first fixing plate (240), and a second fixing plate (250); The first support plate (210) and the second support plate (220) are circular in shape. The first support plate (210) and the second support plate (220) are parallel to each other and fixed at intervals on the transmission shaft (100). The annular mounting plate (230), the first fixing plate (240), and the second fixing plate (250) are annular; The diameter of the annular mounting plate (230) is smaller than the diameters of the first support plate (210) and the second support plate (220); the two ends of the axis of the annular mounting plate (230) are fixedly connected between the first support plate (210) and the second support plate (220), and the annular mounting plate (230), the first support plate (210), and the second support plate (220) are coaxially arranged; The outer side of the annular mounting plate (230), the first support plate (210), and the second support plate (220) enclose the annular oil groove (260). The first fixing plate (240) and the second fixing plate (250) have the same diameter as the first support plate (210); The first fixing plate (240) is fixedly connected to the outer edge of the first support plate (210), and the second fixing plate (250) is fixedly connected to the outer edge of the second support plate (220). The first fixing plate (240) is located on the side of the first support plate (210) away from the annular oil groove (260), and the second fixing plate (250) is located on the side of the second support plate (220) away from the annular oil groove (260). The first fixing plate (240) and the second fixing plate (250) are respectively fixedly connected to the rubber tube (300).

3. A receiving device suitable for road detection according to claim 2, characterized in that, The annular mounting plate (230) has detection holes (231) spaced at equal angles along the circumference. The piezoelectric detector (400) is fixed on the annular mounting plate (230) and the piezoelectric detector (400) is located on the side of the annular mounting plate (230) close to the drive shaft (100). The detection end of the piezoelectric detector (400) is located in the detection hole (231). Each detection hole (231) corresponds to one piezoelectric detector (400).

4. A receiving device suitable for road detection according to claim 3, characterized in that, A sealing cylinder (270) is provided on one side of the annular mounting plate (230) near the annular oil groove (260). The sealing cylinder (270) is fastened to one of the detection holes (231), and the interior of the sealing cylinder (270) is separated from the annular oil groove (260).

5. A receiving device suitable for road detection according to claim 2, characterized in that, A front cover plate (600) and a rear cover plate (630) are respectively provided on the large wheel frame (200) at both ends in the direction perpendicular to the axis of the drive shaft (100). The front cover plate (600) is connected to the first fixing plate (240), and the rear cover plate (630) is connected to the second fixing plate (250). Multiple connecting posts (610) are provided between the front cover plate (600) and the first support plate (210), and between the rear cover plate (630) and the second support plate (220).

6. A receiving device suitable for road detection according to claim 5, characterized in that, A first mounting cavity (620) is formed between the first support plate (210) and the front cover plate (600). A signal acquisition box (700) and a control box (800) are fixedly installed in the first mounting cavity (620) and on the first support plate (210). A second mounting cavity (640) is formed between the second support plate (220) and the rear cover plate (630), and a power supply (900) is fixed in the second mounting cavity (640) and on the second support plate (220).

7. A receiving device suitable for road detection according to claim 2, characterized in that, An oil injection pipe (280) is fixedly provided on the first support plate (210) or the second support plate (220). The oil injection pipe (280) is connected to the annular oil groove (260). One end of the oil injection pipe (280) away from the annular oil groove (260) is located in the first mounting cavity (620) or the second mounting cavity (640) and is detachably and sealed with an end cap (281).

8. A receiving device suitable for road detection according to claim 2, characterized in that, The first support plate (210) and the second support plate (220) are each provided with a plurality of connection ports (211), and the connection ports (211) are all located on the inner side of the annular mounting plate (230).

9. A receiving device suitable for road detection according to claim 2, characterized in that, The drive shaft (100) and the second support plate (220) are connected by a locking assembly (500).

10. A receiving device suitable for road detection according to claim 9, characterized in that, The locking assembly (500) includes a support sleeve (510) which is sleeved on the drive shaft (100); An installation plate (520) is integrally formed at one end of the support sleeve (510). The installation plate (520) is attached to the second support plate (220) and is fixedly connected by the first bolt (530). A first locking hole (5111) is provided radially on the support sleeve (510), and at least two first locking holes (5111) are provided at intervals along the circumferential direction. A second locking hole (110) is provided on the drive shaft (100), and the first locking hole (5111) and the second locking hole (110) are arranged concentrically. A second bolt (540) is provided in the first locking hole (5111) and the second locking hole (110), and the second bolt (540) passes through the first locking hole (5111) and is threadedly connected to the second locking hole (110).

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