A three-dimensional tunnel advance detection seismic radar

Abstract

The invention belongs to the technical field of advanced geological prediction in geophysical exploration, and is specifically a three-dimensional tunnel advance detection seismic radar, comprising a telescopic rod; a lever is hinged on the top of the telescopic rod through a bracket, one end of the lever is fixedly connected to a radar antenna, and the other end is fixedly connected to a base; the radar antenna is electrically connected to a radar transceiver through a wire; an oil cylinder is hinged on one end of the lever close to the base, the other end of the oil cylinder is hinged to the telescopic rod, and the oil cylinder is connected to an oil pump through an electromagnetic valve; a No. 1 hole is provided in the base, a sliding seat is provided in the No. 1 hole, a ball seat is provided on the sliding seat, a ball head is provided in the ball seat, and the ball seat and the ball head are connected through a ball hinge; a bearing platform is fixedly connected to the side of the ball head away from the base, a hydraulic motor is provided in the bearing platform, and a grinding disk is fixedly connected to the output shaft of the hydraulic motor; the invention flattens the detection surface through the grinding disk to increase the accuracy of radar detection.

Description

Technical Field

[0001] The invention belongs to the technical field of advanced geological prediction in geophysical exploration, and is specifically a three-dimensional tunnel advance detection seismic radar. Background Art

[0002] Ground penetrating radar is an effective means of detecting underground targets developed in recent decades. It is a non-destructive detection technology. Compared with other conventional underground detection methods, it has the advantages of fast detection speed, continuous detection process, high resolution, convenient and flexible operation, and low detection cost. It is increasingly used in the field of engineering survey.

[0003] Ground penetrating radar is a geophysical method that uses antennas to transmit and receive high-frequency electromagnetic waves to detect the material characteristics and distribution patterns inside a medium. Ground penetrating radar was called by many names in the early days. Such as ground detection radar, underground radar, geological radar, pulse radar, surface penetration radar, etc., all refer to an electromagnetic wave method that uses high-frequency pulse electromagnetics to detect the internal structure of geological targets for geological exploration targets.

[0004] The existing advanced geological prediction technologies for tunnels (tunnels) mainly include three types: face plain method, drilling method and geophysical exploration method. Among them, geophysical exploration method is widely used and written into relevant specifications for tunnel construction due to its low cost and high efficiency. Among geophysical exploration technologies, seismic reflection wave method can better meet the actual needs of engineering due to its site adaptability, detection distance and effectiveness, and has become an indispensable task in conventional advanced geological prediction. There is a difference between two-dimensional and three-dimensional exploration technologies in the subdivision of seismic reflection wave method advanced geological prediction technology.

[0005] Some technical solutions for ground penetrating radar have also appeared in the prior art. For example, a Chinese patent with application number 2016107852425 discloses a three-dimensional tunnel earthquake advance detection method, which includes the following steps: evenly arranging multiple excitation points on the edge of the tunnel face and arranging one excitation point in the center of the tunnel face; evenly arranging multiple receiving points on the midpoint trajectory line between the edge and the center of the tunnel face, and each excitation point and the receiving point are connected to a digital seismograph; multiple excitation points excite signals in turn, and all detection points receive seismic wave signals at the same time, and a digital seismograph is used to collect data to form multiple sets of seismic wave reflection records. Recording; c. Extracting the data of the common excitation point gather from the digital seismograph and transmitting it to the seismic data analysis software; d. Data preprocessing; velocity analysis; obtaining depth data; the calculation results of the two modes in step 1 are used to give the explanation basis for the anomaly, and then a comprehensive interpretation is made in combination with the drilling and geological radar data. However, when this method is used for detection, due to the uneven surface of the inner wall of the tunnel after blasting and excavation, when the tunnel is surveyed by radar, the radar antenna cannot completely fit the surface to be detected, and then the electromagnetic wave emitted by the radar antenna is sunken into the uneven surface to be detected, which loses a certain signal strength, resulting in a decrease in detection accuracy. Summary of the invention

[0006] In order to make up for the shortcomings of the existing technology and solve the problem that when the existing geological radar is used for detection, the inner wall of the tunnel is uneven after blasting and excavation, so that when the tunnel is surveyed by radar, the radar antenna cannot completely fit the surface to be detected, and then the electromagnetic waves emitted by the radar antenna are sunken into the uneven surface to be detected and lose a certain signal strength, resulting in a decrease in detection accuracy, the present invention proposes a three-dimensional tunnel advance detection seismic radar.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a three-dimensional tunnel advance detection seismic radar described in the present invention comprises a telescopic rod; a lever is hinged on the top of the telescopic rod through a bracket, one end of the lever is fixedly connected to a radar antenna, and the other end is fixedly connected to a base; the radar antenna is electrically connected to a radar transceiver through a wire; an end of the lever close to the base is hinged to an oil cylinder, the other end of the oil cylinder is hinged to the telescopic rod, and the oil cylinder is connected to an oil pump through an electromagnetic valve; a No. 1 hole is provided in the base, a sliding seat is provided in the No. 1 hole, a ball seat is provided on the sliding seat, a ball head is provided in the ball seat, and the ball seat and the ball head are connected by a ball hinge; a side of the ball head away from the base is fixedly connected to a bearing platform, a hydraulic motor is provided in the bearing platform, and the output shaft of the hydraulic motor is fixedly connected to a grinding disk, and the detection surface is leveled by the grinding disk to increase the accuracy of radar detection; during operation, since the surface of the inner wall of the tunnel is concave after blasting and excavation The uneven surface makes it impossible for the radar antenna to completely fit the surface to be detected when the radar is used to survey the tunnel. As a result, the electromagnetic waves emitted by the radar antenna are lost by the uneven surface to be detected, resulting in a certain signal strength loss, resulting in a decrease in detection accuracy. At this time, the radar antenna is controlled to move to the predetermined detection position by extending the telescopic rod, and then the oil cylinder is controlled to extend by the solenoid valve, and then the grinding disc is aligned with the part to be detected after the lever is deflected. Then, the grinding disc is driven by the cylinder to press the surface to be detected, and after the ball head is rotated, the grinding disc fits the surface to be detected to the greatest extent, thereby reducing the cutting amount of the grinding disc, and then the grinding disc is driven to rotate by the hydraulic motor to level the surface to be detected. Then, the lever is driven by the cylinder to rotate so that the grinding disc is out of contact with the surface to be detected, and at the same time, the telescopic rod is moved to align and fit the radar antenna to the surface to be detected, thereby completing the accurate detection of the geological conditions.

[0008] Preferably, the sliding seat is slidably connected to the No. 1 hole; No. 2 holes are opened on both sides of the sliding seat, and a sliding column is slidably connected to the No. 2 hole, and a clamping plate for clamping the ball head is provided at one end of the sliding column close to the ball head; No. 3 hole is provided at the bottom of the No. 1 hole, and a round table fixedly connected to the bottom of the sliding seat is slidably connected to the No. 3 hole; a spring is provided between the round table and the bottom of the No. 3 hole, and an annular groove is opened on the inner wall of the No. 3 hole, and the annular groove is connected to the oil pump through the oil supply hole; No. 4 hole is opened in the radial direction of the round table, and the No. 4 hole is connected to the No. 2 hole through the connecting hole; through the clamping plate clamp Tighten the ball head, reduce the angle deviation of the grinding disc, and increase the grinding efficiency; when the oil cylinder drives the lever to rotate so that the grinding disc presses the surface to be tested, the grinding disc drives the slide seat and the round table to slide in the direction close to the spring, thereby connecting the No. 4 hole with the annular groove, and then the hydraulic oil in the oil supply hole is filled into the No. 2 hole through the annular groove and the No. 4 hole, and then the slide column and the clamping plate are pushed out of the No. 2 hole, so that the clamping plate clamps the ball head, reducing the change of the ball head angle when the grinding disc rotates, thereby reducing the amount of cutting of the surface to be tested by the grinding disc and increasing the working efficiency of the grinding disc.

[0009] Preferably, a No. 5 hole is provided in the sliding column, and an overflow valve is provided in the No. 5 hole; an oil groove is provided on the ball head at a position corresponding to the No. 5 hole, and the oil groove is connected with the hydraulic motor through the No. 6 hole, and the hydraulic pipeline layout is reduced by cooperating with the No. 5 hole and the oil groove; the hydraulic oil in the No. 2 hole is filled into the hydraulic motor through the No. 5 hole, the overflow valve, the oil groove and the No. 6 hole, and then the hydraulic motor is driven to rotate, thereby reducing the exposed hydraulic pipeline near the grinding disk, and thus reducing the damage to the pipeline by debris generated at the grinding disk, thereby ensuring the normal operation of the hydraulic motor and reducing hydraulic pipeline leakage.

[0010] Preferably, spring sheets are embedded in the outer periphery of the ball head and at positions corresponding to the splint, and the spring sheets cooperate with the contour of the ball head splint; a wavy protrusion is provided on the ball head on the side of the spring sheet away from the splint; the end of the splint close to the spring sheet is made of flexible material, and the spring sheet is squeezed by the splint to deform and fit the protrusion, thereby increasing the clamping force of the splint on the ball head and further reducing the angle deviation of the grinding disk; when the splint clamps the ball head under the push of the sliding column, the splint squeezes the spring sheet, so that the spring sheet is deformed and fits the protrusion, and at the same time, since the end of the splint close to the spring sheet is made of flexible material, the splint adapts to the deformation of the spring sheet after slight deformation, thereby increasing the friction on the ball head, further reducing the influence of the vibration generated when the grinding disk is working on the angle of the ball head, reducing the deflection of the ball head, and further increasing the grinding efficiency of the grinding disk.

[0011] Preferably, a group of grooves are provided at the bottom of the ball seat, and grease is filled in the grooves; a No. 7 hole is provided at the bottom of the ball head, and a clamping column is slidably connected in the No. 7 hole; an oil bag is provided on the side of the spring sheet close to the ball head, and the oil bag is filled with hydraulic oil. The oil bag is connected with the bottom of the No. 7 hole through a pipeline, and the clamping column is pushed out when the oil bag is squeezed, thereby further reducing the angle deviation of the grinding disk; the grease filled in the grooves reduces the friction resistance encountered by the ball head when adjusting the angle, thereby ensuring the rapid rotation of the ball head, and at the same time, the grooves can reduce the overflow of grease from the gap between the ball seat and the ball head after being squeezed, thereby reducing the waste of grease and increasing the lubrication time of the ball head. At the same time, after the splint squeezes the spring sheet to deform the spring sheet, the spring sheet squeezes the oil bag, so that the hydraulic oil in the oil bag is filled into the No. 5 hole through the pipeline, thereby pushing the clamping column out and embedding it in the groove, further reducing the deflection of the ball head when the grinding disk is working, and increasing the grinding efficiency of the grinding disk.

[0012] Preferably, overflow holes are provided between adjacent grooves, and grease in the oil storage tank is transferred through the overflow holes to reduce leakage of grease and ensure smooth rotation of the ball head; overflow holes are provided between the grooves, and the overflow holes connect the grooves, so that when the clamping column is embedded in the groove, the grease in the groove flows into the adjacent groove through the overflow hole, thereby further reducing the overflow of grease from the gap between the ball seat and the ball head, further reducing the waste of grease, and increasing the lubrication time of the ball head.

[0013] The beneficial effects of the present invention are as follows:

[0014] 1. The three-dimensional tunnel advance detection seismic radar described in the present invention, after the lever is deflected, the grinding disk is aligned with the part to be detected, and then the grinding disk is driven by the cylinder to press the surface to be detected, and after the ball head is rotated, the grinding disk is made to fit the surface to be detected to the greatest extent, thereby reducing the cutting amount of the grinding disk, and then the grinding disk is driven by the hydraulic motor to rotate to level the surface to be detected, and then the lever is driven by the cylinder to rotate to make the grinding disk disengage from the surface to be detected, and at the same time, the telescopic rod is moved to make the radar antenna align with and fit the surface to be detected, thereby completing the accurate detection of the geological conditions.

[0015] 2. The three-dimensional tunnel advance detection seismic radar described in the present invention reduces the friction resistance encountered by the ball head when adjusting the angle through the grease filled in the groove, thereby ensuring the rapid rotation of the ball head. At the same time, the groove can reduce the grease from overflowing from the gap between the ball seat and the ball head after being squeezed, thereby reducing the waste of grease and increasing the lubrication time of the ball head. At the same time, after the splint squeezes the spring piece to deform the spring piece, the spring piece squeezes the oil bag, so that the hydraulic oil in the oil bag is filled into the No. 5 hole through the pipeline, thereby pushing the clamping column to extend and embed into the groove, further reducing the deflection of the ball head when the grinding disk is working, and increasing the grinding efficiency of the grinding disk. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the accompanying drawings.

[0017] Figure 1 is a stereogram of the present invention;

[0018] Figure 2 is a cross-sectional view of the base in the present invention;

[0019] Figure 3 yes Figure 2 A partial enlarged view of the middle part;

[0020] In the figure: telescopic rod 1, bracket 11, lever 12, radar antenna 13, base 14, cylinder 15, No. 1 hole 16, slide seat 17, ball seat 18, ball head 19, support 110, hydraulic motor 111, grinding disc 112, No. 2 hole 2, slide column 21, clamping plate 22, No. 3 hole 23, round table 24, annular groove 25, oil supply hole 26, No. 4 hole 27, connecting hole 28, No. 5 hole 3, oil groove 31, No. 6 hole 32, spring piece 33, protrusion 34, groove 35, clamping column 36, oil bag 37, overflow hole 38, No. 7 hole 39. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0022] like Figures 1 to 3 As shown, a three-dimensional tunnel advance detection seismic radar described in the present invention comprises a telescopic rod 1; a lever 12 is hingedly connected to the top of the telescopic rod 1 through a bracket 11, one end of the lever 12 is fixedly connected to a radar antenna 13, and the other end is fixedly connected to a base 14; the radar antenna 13 is electrically connected to a radar transceiver through a wire; an end of the lever 12 close to the base 14 is hingedly connected to an oil cylinder 15, the other end of the oil cylinder 15 is hinged to the telescopic rod 1, and the oil cylinder 15 is connected to an oil pump through a solenoid valve; a base 14 is provided with a A slide seat 17 is arranged in the No. 1 hole 16, a ball seat 18 is arranged on the slide seat 17, a ball head 19 is arranged in the ball seat 18, and the ball seat 18 and the ball head 19 are connected by a ball hinge; a support 110 is fixedly connected to the side of the ball head 19 away from the base 14, a hydraulic motor 111 is arranged in the support 110, and a grinding disc 112 is fixedly connected to the output shaft of the hydraulic motor 111, and the detection surface is leveled by the grinding disc 112 to increase the accuracy of radar detection; during operation, since the inner wall of the tunnel is flattened after blasting and excavation, The surface is uneven, so when the radar is used to survey the tunnel, the radar antenna 13 cannot completely fit the surface to be detected, so that the electromagnetic wave emitted by the radar antenna 13 is lost by the uneven surface to be detected, resulting in a certain signal strength loss, resulting in a decrease in detection accuracy. At this time, the radar antenna 13 is controlled to move to a predetermined detection position by extending the telescopic rod 1, and then the oil cylinder 15 is controlled to extend by the solenoid valve, and then the grinding disc 112 is aligned with the part to be detected after the lever 12 is deflected, and then the grinding disc 112 is driven by the oil cylinder 15 to press the surface to be detected, and after the ball head 19 rotates, the grinding disc 112 fits the surface to be detected to the greatest extent, thereby reducing the cutting amount of the grinding disc 112, and then the grinding disc 112 is driven by the hydraulic motor 111 to rotate, and the surface to be detected is leveled, and then the lever 12 is driven by the oil cylinder 15 to rotate so that the grinding disc 112 is out of contact with the surface to be detected, and at the same time, the telescopic rod 1 is moved to align and fit the radar antenna 13 to the surface to be detected, thereby completing accurate detection of geological conditions.

[0023] As an embodiment of the present invention, the slide seat 17 is slidably connected with the No. 1 hole 16; No. 2 holes 2 are opened on both sides of the slide seat 17, and a slide column 21 is slidably connected in the No. 2 hole 2, and a clamping plate 22 for clamping the ball head 19 is provided at one end of the slide column 21 close to the ball head 19; No. 3 hole 23 is provided at the bottom of the No. 1 hole 16, and a round table 24 fixed to the bottom of the slide seat 17 is slidably connected with the No. 3 hole 23; a spring is provided between the round table 24 and the bottom of the No. 3 hole 23, and an annular groove 25 is opened on the inner wall of the No. 3 hole 23, and the annular groove 25 is connected to the oil pump through the oil supply hole 26; No. 4 hole 27 is opened in the radial direction in the round table 24, and the No. 4 hole 27 is connected with the No. 2 hole 2 through a connecting hole 28; through The clamping plate 22 clamps the ball head 19, reduces the angle deviation of the grinding disc 112, and increases the grinding efficiency; when the oil cylinder 15 drives the lever 12 to rotate so that the grinding disc 112 presses the surface to be inspected, the grinding disc 112 drives the slide seat 17 and the round table 24 to slide in the direction close to the spring, thereby connecting the No. 4 hole 27 with the annular groove 25, and then the hydraulic oil in the oil supply hole 26 is filled into the No. 2 hole 2 through the annular groove 25 and the No. 4 hole 27, and then the slide column 21 and the clamping plate 22 are pushed to the outside of the No. 2 hole 2, so that the clamping plate 22 clamps the ball head 19, reduces the change in the angle of the ball head 19 when the grinding disc 112 rotates, thereby reducing the cutting amount of the grinding disc 112 on the surface to be inspected and increasing the working efficiency of the grinding disc 112.

[0024] As an embodiment of the present invention, a No. 5 hole 3 is provided in the sliding column 21, and an overflow valve is provided in the No. 5 hole 3; an oil groove 31 is provided on the ball head 19 at a position corresponding to the No. 5 hole 3, and the oil groove 31 is connected to the hydraulic motor 111 through the No. 6 hole 32, and the hydraulic pipeline layout is reduced by cooperating with the No. 5 hole 3 and the oil groove 31; the hydraulic oil in the No. 2 hole 2 is filled into the hydraulic motor 111 after passing through the No. 5 hole 3, the overflow valve, the oil groove 31 and the No. 6 hole 32, and then the hydraulic motor 111 is driven to rotate, thereby reducing the exposed hydraulic pipeline near the grinding disk 112, and thereby reducing the damage to the pipeline by debris generated at the grinding disk 112, thereby ensuring the normal operation of the hydraulic motor 111 and reducing hydraulic pipeline leakage.

[0025] As an embodiment of the present invention, the outer periphery of the ball head 19 and the corresponding position of the clamping plate 22 are inlaid with a spring piece 33, and the spring piece 33 matches the contour of the ball head 19 clamping plate 22; the ball head 19 on the side of the spring piece 33 away from the clamping plate 22 is provided with a wavy protrusion 34; the end of the clamping plate 22 close to the spring piece 33 is made of flexible material, and the spring piece 33 is squeezed by the clamping plate 22 to deform and fit the protrusion 34, thereby increasing the clamping force of the clamping plate 22 on the ball head 19, and further reducing the angle deviation of the grinding disc 112; when the clamping plate 22 When the ball head 19 is clamped under the push of the sliding column 21, the clamping plate 22 squeezes the spring sheet 33, so that the spring sheet 33 is deformed and fits the protrusion 34. At the same time, since the end of the clamping plate 22 close to the spring sheet 33 is made of flexible material, the clamping plate 22 is slightly deformed to adapt to the deformation of the spring sheet 33, thereby increasing the friction force on the ball head 19, further reducing the influence of the vibration generated by the grinding disk 112 when it is working on the angle of the ball head 19, reducing the deflection of the ball head 19, and further increasing the grinding efficiency of the grinding disk 112.

[0026] As an embodiment of the present invention, a group of grooves 35 are provided at the bottom of the ball seat 18, and the grooves 35 are filled with grease; a seventh hole 39 is provided at the bottom of the ball head 19, and a clamping column 36 is slidably connected in the seventh hole 39; an oil bag 37 is provided on the side of the spring piece 33 close to the ball head 19, and the oil bag 37 is filled with hydraulic oil. The oil bag 37 is connected to the bottom of the fifth hole 3 through a pipeline, and the clamping column 36 is pushed out when the oil bag 37 is squeezed, thereby further reducing the angle deviation of the grinding disc 112; the grease filled in the groove 35 reduces the rotation of the ball head 19 when adjusting the angle. The friction resistance can ensure the rapid rotation of the ball head 19. At the same time, the groove 35 can reduce the grease from being squeezed and overflowing from the gap between the ball seat 18 and the ball head 19, thereby reducing the waste of grease and increasing the lubrication time of the ball head 19. At the same time, after the clamping plate 22 squeezes the spring sheet 33 to deform the spring sheet 33, the spring sheet 33 squeezes the oil bag 37, so that the hydraulic oil in the oil bag 37 is filled into the No. 7 hole 39 through the pipeline, thereby pushing the clamping column 36 to extend and embed into the groove 35, further reducing the deflection of the ball head 19 when the grinding disc 112 is working, and increasing the grinding efficiency of the grinding disc 112.

[0027] As an embodiment of the present invention, an overflow hole 38 is provided between adjacent grooves 35, and the grease in the oil storage tank 31 is transferred through the overflow hole 38 to reduce the leakage of the grease and ensure the smooth rotation of the ball head 19; the overflow hole 38 is provided between the grooves 35, and the overflow hole 38 connects the grooves 35, so that when the clamping column 36 is embedded in the groove 35, the grease in the groove 35 flows into the adjacent groove 35 through the overflow hole 38, thereby further reducing the overflow of grease from the gap between the ball seat 18 and the ball head 19, further reducing the waste of grease, and increasing the lubrication time of the ball head 19.

[0028] During operation, since the inner wall of the tunnel is uneven after blasting and excavation, the radar antenna 13 cannot completely fit the surface to be detected when the radar is used to survey the tunnel, so that the electromagnetic wave emitted by the radar antenna 13 is lost by the uneven surface to be detected to a certain extent, resulting in a decrease in detection accuracy. At this time, the radar antenna 13 is controlled to move to a predetermined detection position by extending the telescopic rod 1, and then the oil cylinder 15 is extended by the solenoid valve, and then the lever 12 is pushed to deflect and the grinding disc 112 is aligned with the part to be detected. Then, the grinding disc 112 is driven by the oil cylinder 15 to press the surface to be detected, and after the ball head 19 rotates, the grinding disc 112 is pressed against the surface to be detected. The grinding disc 112 fits the surface to be detected to the greatest extent, thereby reducing the cutting amount of the grinding disc 112, and then the grinding disc 112 is driven to rotate by the hydraulic motor 111 to level the surface to be detected, and then the lever 12 is driven to rotate by the oil cylinder 15 to make the grinding disc 112 disengage from the surface to be detected, and at the same time, the telescopic rod 1 is moved to align and fit the surface to be detected, so as to complete the accurate detection of the geological conditions; when the oil cylinder 15 drives the lever 12 to rotate so that the grinding disc 112 presses the surface to be detected, the grinding disc 112 drives the slide seat 17 and the round table 24 to slide in the direction close to the spring, so that the fourth hole 27 and the ring groove are aligned. 25 is connected, so that the hydraulic oil in the oil supply hole 26 is filled into the No. 2 hole 2 through the annular groove 25 and the No. 4 hole 27, and then the sliding column 21 and the clamping plate 22 are pushed out of the No. 2 hole 2, so that the clamping plate 22 clamps the ball head 19, and the change of the angle of the ball head 19 when the grinding disk 112 rotates is reduced, thereby reducing the cutting amount of the grinding disk 112 on the surface to be tested, and increasing the working efficiency of the grinding disk 112; by filling the hydraulic oil in the No. 2 hole 2 into the hydraulic motor 111 through the No. 5 hole 3, the overflow valve, the oil groove 31 and the No. 6 hole 32, and then driving the hydraulic motor 111 to rotate, reducing the exposed hydraulic pipeline near the grinding disk 112, thereby reducing the grinding The debris generated at the cutting disc 112 damages the pipeline, ensuring the normal operation of the hydraulic motor 111 and reducing the leakage of the hydraulic pipeline; when the clamping plate 22 clamps the ball head 19 under the push of the sliding column 21, the clamping plate 22 squeezes the spring sheet 33, so that the spring sheet 33 is deformed and fits the protrusion 34. At the same time, since the end of the clamping plate 22 close to the spring sheet 33 is made of flexible material, the clamping plate 22 is slightly deformed to adapt to the deformation of the spring sheet 33, thereby increasing the friction force on the ball head 19, further reducing the influence of the vibration generated by the grinding disc 112 when working on the angle of the ball head 19, reducing the deflection of the ball head 19, and further increasing the grinding efficiency of the grinding disc 112;The grease filled in the groove 35 reduces the friction resistance of the ball head 19 when adjusting the angle, thereby ensuring the rapid rotation of the ball head 19. At the same time, the groove 35 can reduce the grease from being squeezed and overflowing from the gap between the ball seat 18 and the ball head 19, thereby reducing the waste of grease and increasing the lubrication time of the ball head 19. At the same time, after the clamping plate 22 squeezes the spring sheet 33 to deform the spring sheet 33, the spring sheet 33 squeezes the oil bag 37, so that the hydraulic oil in the oil bag 37 is filled into the seventh hole 39 through the pipeline, thereby pushing the clamping column 36 to extend. The ball head 19 is inserted into the groove 35, further reducing the deflection of the ball head 19 when the grinding disc 112 is working, and increasing the grinding efficiency of the grinding disc 112; overflow holes 38 are provided between the grooves 35, and the overflow holes 38 connect the grooves 35, so that when the clamping column 36 is inserted into the groove 35, the grease in the groove 35 flows into the adjacent groove 35 through the overflow hole 38, thereby further reducing the grease from the gap between the ball seat 18 and the ball head 19. Overflow, further reducing the waste of grease, and increasing the lubrication time of the ball head 19.

[0029] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A three-dimensional tunnel advance detection seismic radar, characterized in that: The invention comprises a telescopic rod (1); a lever (12) is hingedly connected to the top of the telescopic rod (1) through a bracket (11); one end of the lever (12) is fixedly connected to a radar antenna (13), and the other end is fixedly connected to a base (14); the radar antenna (13) is electrically connected to a radar transceiver through a wire; an oil cylinder (15) is hingedly connected to one end of the lever (12) close to the base (14); the other end of the oil cylinder (15) is hingedly connected to the telescopic rod (1); the oil cylinder (15) is connected to an oil pump through an electromagnetic valve; a No. 1 hole (16) is provided in the base (14); ), a slide seat (17) is provided in the No. 1 hole (16), a ball seat (18) is provided on the slide seat (17), a ball head (19) is provided in the ball seat (18), and the ball seat (18) and the ball head (19) are connected by a ball hinge; a support (110) is fixedly connected to the side of the ball head (19) away from the base (14), a hydraulic motor (111) is provided in the support (110), and a grinding disc (112) is fixedly connected to the output shaft of the hydraulic motor (111), and the detection surface is leveled by the grinding disc (112), thereby increasing the accuracy of radar detection.

2. A three-dimensional tunnel advance detection seismic radar according to claim 1, characterized in that: The slide seat (17) is slidably connected to the No. 1 hole (16); No. 2 holes (2) are provided on both sides of the slide seat (17); a slide post (21) is slidably connected to the No. 2 hole (2); a clamping plate (22) for clamping the ball head (19) is provided at one end of the slide post (21) close to the ball head (19); a No. 3 hole (23) is provided at the bottom of the No. 1 hole (16); a round table (24) fixedly connected to the bottom of the slide seat (17) is slidably connected to the No. 3 hole (23); the round table (24) is fixedly connected to the bottom of the slide seat (17) A spring is provided between the table (24) and the bottom of the third hole (23); an annular groove (25) is provided on the inner wall of the third hole (23); the annular groove (25) is connected to the oil pump through an oil supply hole (26); a fourth hole (27) is provided in the circular table (24) along the radial direction; the fourth hole (27) is connected to the second hole (2) through a connecting hole (28); the ball head (19) is clamped by a clamping plate (22) to reduce the angle deviation of the grinding disc (112) and increase the grinding efficiency.

3. A three-dimensional tunnel advance detection seismic radar according to claim 2, characterized in that: A No. 5 hole (3) is provided in the sliding column (21), and a relief valve is provided in the No. 5 hole (3); an oil groove (31) is provided on the ball head (19) at a position corresponding to the No. 5 hole (3), and the oil groove (31) is connected to the hydraulic motor (111) through the No. 6 hole (32), and the arrangement of the hydraulic pipeline is reduced by cooperating with the No. 5 hole (3) and the oil groove (31).

4. A three-dimensional tunnel advance detection seismic radar according to claim 3, characterized in that: The outer periphery of the ball head (19) and the corresponding position of the clamping plate (22) are inlaid with a spring piece (33), and the spring piece (33) matches the contour of the ball head (19) and the clamping plate (22); the ball head (19) on the side of the spring piece (33) away from the clamping plate (22) is provided with a wavy protrusion (34); the end of the clamping plate (22) close to the spring piece (33) is made of flexible material, and the clamping plate (22) squeezes the spring piece (33) to deform and fit the protrusion (34), thereby increasing the clamping force of the clamping plate (22) on the ball head (19), and further reducing the angle deviation of the grinding disc (112).

5. A three-dimensional tunnel advance detection seismic radar according to claim 4, characterized in that: The bottom of the ball seat (18) is provided with a group of grooves (35), and the grooves (35) are filled with grease; the bottom of the ball head (19) is provided with a seventh hole (39), and a clamping column (36) is slidably connected in the seventh hole (39); an oil bag (37) is provided on the side of the spring piece (33) close to the ball head (19), and the oil bag (37) is filled with hydraulic oil. The oil bag (37) is connected to the bottom of the seventh hole (39) through a pipeline, and the clamping column (36) is pushed out when the oil bag (37) is squeezed, thereby further reducing the angle deviation of the grinding disc (112).

6. A three-dimensional tunnel advance detection seismic radar according to claim 5, characterized in that: Overflow holes (38) are provided between adjacent grooves (35), and the grease in the oil storage tank (31) is transferred through the overflow holes (38), thereby reducing the leakage of the grease and ensuring the smooth rotation of the ball head (19).

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