A rapid positioning device for underground pipeline measurement

Abstract

The present invention relates to the technical field of underground pipeline survey, and specifically to a rapid positioning device for underground pipeline measurement, comprising a trolley body, the top of which is provided with an installation cavity, a docking groove and a sliding mouth, a pushing mechanism, the pushing mechanism comprising a slide plate, a push handle and a rack 1, the slide plate is slidably installed inside the installation cavity, the rack 1 is slidably installed inside the docking groove, one end of the rack 1 is fixedly connected to the slide plate, the push handle is fixedly installed on the top of the slide plate, and a detection mechanism, the detection mechanism comprising a mounting frame, a slider, a transmission shaft 1, a detection head and an eccentric wheel, the mounting frame is slidably installed inside the sliding mouth. The detection head of the present invention is spherically connected to the slider, which can maintain verticality and improve accuracy, the pushing mechanism simplifies operation, effectively reduces strength, automatically rises and falls to prevent collisions, and can effectively extend service life, and the swing mechanism expands the detection range, which is conducive to improving efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of underground pipeline surveying, and in particular to a rapid positioning device for underground pipeline measurement. Background Art

[0002] In modern urban construction, the layout of underground pipelines is intricate, including but not limited to pipelines and cables for water supply and drainage, gas, electricity, communications and other infrastructure, which constitute the lifeblood of urban operations. Therefore, accurate measurement and positioning of underground pipelines are of great significance for urban planning, construction, maintenance and emergency rescue. However, the currently widely used underground pipeline measurement devices and methods still have many inconveniences and limitations.

[0003] Traditional underground pipeline measurement methods mostly rely on handheld devices, which require operators to hold them at a certain distance above the ground and swing them left and right to search and locate the location of underground pipelines. This method is not only complex and labor-intensive, which can easily make operators feel tired, but also its positioning accuracy is limited by the instability of human operation. During the swinging process, it is often difficult for the equipment to remain absolutely vertical for a long time, and any slight tilt may cause deviations in the measurement results, thereby affecting the accuracy of positioning.

[0004] In addition, when the equipment detects the signal of the underground pipeline, the operator usually needs to bend down or squat to keep the equipment close to the ground and try to keep the equipment vertical in order to further measure the depth of the pipeline. This process not only increases the difficulty and complexity of the operation, but also may cause unnecessary burden on the operator's body, especially in long-term operation or harsh working environment, the adverse effects are more significant. Summary of the invention

[0005] The present invention discloses a rapid positioning device for underground pipeline measurement, which aims to solve the problems in the above-mentioned background technology that the traditional handheld equipment for positioning pipelines is complicated and laborious, easy to fatigue and has limited accuracy, is difficult to maintain verticality for a long time, and increases the risk of deviation.

[0006] To solve the above technical problems, a technical solution adopted by the present invention is: to provide a rapid positioning device for underground pipeline measurement, including a trolley main body, the top of which is provided with an installation cavity, a docking groove and a sliding mouth, a pushing mechanism, the pushing mechanism includes a slide plate, a push handle and a rack 1, the slide plate is slidably installed in the installation cavity, the rack 1 is slidably installed in the docking groove, one end of the rack 1 is fixedly connected to the slide plate, and the push handle is fixedly installed on the top of the slide plate, a detection mechanism, the detection mechanism includes a mounting frame, a slider, a transmission shaft 1, a detection head and an eccentric wheel, the mounting frame is slidably installed in the sliding mouth, the slider is slidably connected to the mounting frame, a ball socket is provided at the bottom of the slider, a spherical joint is provided on the top of the detection head and is rotatably connected to the inner wall of the ball socket, and the eccentric wheel is rotatably connected to the mounting frame, and a swing mechanism is arranged in the trolley main body, the swing mechanism includes a transmission shaft 2, a bevel gear, a gear set, a half gear and a rack 2, wherein the half gear is meshed with the rack 2, and the rack 2 is fixedly connected to the detection mechanism.

[0007] The present invention is further configured such that the eccentric wheel side wall is provided with a connecting port, the sliding block side wall is provided with a docking groove near the connecting port, the transmission shaft 1 is slidably connected between the connecting port and the inside of the docking groove, the two ends of the transmission shaft 1 extend into the inside of the docking groove, and the end of the transmission shaft 1 located inside the docking groove is fixedly connected with a gear 1, and the gear 1 is meshingly connected with a rack 1.

[0008] The present invention is further configured such that a magnet is provided inside the installation frame above the eccentric wheel for positioning the eccentric wheel when the eccentric wheel rotates to a specific position.

[0009] The present invention is further configured as follows: a cavity one is opened inside the trolley main body, a cavity two is opened inside the trolley main body at a position above the cavity one, a transmission shaft two is rotatably connected inside the cavity one, a bevel gear is fixedly connected to the circumferential outer surface of the transmission shaft two, the half gear is rotatably connected to the inner wall of the cavity two, the rack two is slidably connected to the inner wall of the cavity two, the rack two is fixedly connected to the mounting frame, a gear set is rotatably connected to the top of the cavity one, and the bevel gear is transmission-connected to the half gear through the gear set to realize the reciprocating motion of the detection mechanism when the trolley moves.

[0010] The present invention is further configured such that both ends of the second transmission shaft extend to the outside of the trolley body, and the end of the second transmission shaft located outside the trolley body is rotatably connected to a second roller, and the rolling of the second roller drives the second transmission shaft to rotate, thereby driving the swing mechanism to work.

[0011] The present invention is further configured such that the inner wall of the connection port is non-circular, and an outer shape of the transmission shaft fits the inner wall of the connection port.

[0012] The present invention is further configured such that the detection head is connected to a ball and socket damping connection at the bottom of the slider via a spherical joint so as to keep the detection head vertically downward when the device is offset or tilted.

[0013] Beneficial effects of the underground pipeline measurement rapid positioning device of the present invention:

[0014] 1. The detection head in the detection mechanism is connected to the ball socket damping at the bottom of the slider through a spherical joint, ensuring that the detection head can remain vertically downward when the device moves or tilts, effectively avoiding measurement deviations caused by operational instability and improving measurement accuracy. The swing mechanism realizes the reciprocating motion of the detection mechanism during the movement of the device through the complex transmission of the transmission shaft, bevel gears, gear sets and half gears, thereby expanding the detection range and improving the accuracy and efficiency of detection.

[0015] 2. The movement of the entire device and the lifting and lowering of the detection head can be controlled by pushing the push handle of the mechanism, which simplifies the complex operation of traditional handheld equipment, reduces the labor intensity of operators, and avoids fatigue caused by long-term operation. Before the device moves, the detection head will automatically rise away from the ground, effectively preventing collision with foreign objects on the ground during movement, protecting the equipment from damage, and extending its service life. When the detection head rises, the interaction between the eccentric wheel and the magnet realizes automatic positioning, preventing the eccentric wheel from detaching. At the same time, by pushing the push handle in the opposite direction, the detection head can automatically reset to a state close to the ground, which is convenient for subsequent accurate measurement.

[0016] To sum up, the present invention not only improves the accuracy and stability of underground pipeline measurement through ingenious component connection relationship design, but also reduces operation difficulty and labor intensity, effectively prevents equipment collision, expands the detection range, improves detection efficiency, and has significant beneficial effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0018] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0019] Figure 1 This is a three-dimensional structural diagram of a rapid positioning device for underground pipeline measurement according to the present invention;

[0020] Figure 2 This is a bottom view of a rapid positioning device for underground pipeline measurement according to the present invention;

[0021] Figure 3 This is a separation diagram of a rapid positioning device for underground pipeline measurement according to the present invention;

[0022] Figure 4 It is a front cross-sectional view of a rapid positioning device for underground pipeline measurement according to the present invention;

[0023] Figure 5 A top cross-sectional view of a rapid positioning device for underground pipeline measurement according to the present invention;

[0024] Figure 6 This is an enlarged view of the detection mechanism of a rapid positioning device for underground pipeline measurement of the present invention;

[0025] Figure 7 An exploded diagram of a detection mechanism of a rapid positioning device for underground pipeline measurement according to the present invention;

[0026] Figure 8 The present invention is a cross-sectional view of a detection mechanism of a rapid positioning device for underground pipeline measurement.

[0027] The markings in the figure are: 1, trolley body; 11, installation cavity; 12, docking groove; 13, sliding mouth; 14, roller 1;

[0028] 15. Detection mechanism; 151. Mounting frame; 1511. Magnet; 152. Sliding block; 1521. Docking slot; 1522. Ball joint; 1523. Detection head; 153. Eccentric wheel; 1531. Connecting port; 154. Transmission shaft 1; 1541. Gear 1;

[0029] 16. Swing mechanism; 161. Transmission shaft 2; 1611. Roller 2; 162. Bevel gear; 163. Gear set; 164. Half gear; 165. Rack 2;

[0030] 17. Pushing mechanism; 171. Slide plate; 172. Push handle; 173. Rack 1;

[0031] 18. Cavity one; 19. Cavity two. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other; the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left" and "right" etc. indicate directions or positional relationships based on directions 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 positions or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limitations of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, "connection" can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or a transmission connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements.

[0034] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , Figure 6 , Figure 7A rapid positioning device for underground pipeline measurement includes a trolley body 1, a top of which is provided with an installation cavity 11, a docking groove 12 and a sliding opening 13, a pushing mechanism 17, the pushing mechanism 17 includes a slide plate 171, a push handle 172 and a rack 173, the slide plate 171 is slidably installed in the installation cavity 11, the rack 173 is slidably installed in the docking groove 12, one end of the rack 173 is fixedly connected to the slide plate 171, and the push handle 172 is fixedly installed on the top of the slide plate 171, and a detection mechanism 15, the detection mechanism 15 includes a mounting frame 151, a slider 152, a transmission shaft 154, a detection head 1523 and an eccentric wheel 15 3. The mounting frame 151 is slidably mounted inside the sliding opening 13, the slider 152 is slidably connected inside the mounting frame 151, a ball socket is provided at the bottom of the slider 152, a ball joint 1522 is rotatably connected to the inner wall of the ball socket is provided on the top of the detection head 1523, the eccentric wheel 153 is rotatably connected to the inside of the mounting frame 151, and the swing mechanism 16 is arranged inside the trolley body 1, the swing mechanism 16 includes a second transmission shaft 161, a bevel gear 162, a gear set 163, a half gear 164 and a second rack 165, wherein the half gear 164 is meshedly connected with the second rack 165, and the second rack 165 is fixedly connected to the detection mechanism 15.

[0035] By adopting the above technical solution, the detection head 1523 is normally attached to the ground. The push handle 172 pushes the slide 171 to drive the rack 173 to move, so that the gear 1541 rotates 180°, and then drives the transmission shaft 154 and the eccentric wheel 153 to rotate by the same angle. After the eccentric wheel 153 rotates, it contacts the magnet 1511 to position, and at the same time pushes the slider 152 and the detection head 1523 to rise, avoiding collision with foreign objects during movement and optimizing signal detection. When the slide 171 can no longer move, the force of the push handle 172 makes the trolley body 1 move forward, and the roller 2 1611 drives the transmission shaft 2 161 to rotate, which is transmitted to the half gear 164 through the bevel gear 162 and the gear set 163, driving the rack 2 165 to reciprocate in the cavity 2 19, driving the detection mechanism 15 to reciprocate, expanding the detection range and ensuring the direction accuracy. The installation frame 151 and the slider 152 do not affect the position of the eccentric wheel 153 when they move. After the pipeline is detected, the push handle 172 is pulled in the reverse direction to lower the detection head 1523 close to the ground, and the ball joint 1522 keeps it vertically downward even if the device is offset or tilted.

[0036] A connecting port 1531 is provided on the side wall of the eccentric wheel 153, and a docking groove 1521 is provided on the side wall of the slider 152 near the connecting port 1531. The transmission shaft 154 is slidably connected to the connecting port 1531 and the docking groove 1521. Both ends of the transmission shaft 154 extend into the docking groove 12, and the end of the transmission shaft 154 located in the docking groove 12 is fixedly connected with a gear 1541, and the gear 1541 is meshed with the rack 173. A magnet 1511 is provided above the eccentric wheel 153 in the installation frame 151 for positioning the eccentric wheel 153 when it rotates to a specific position. The inner wall of the connecting port 1531 is non-circular, and the outer shape of the transmission shaft 154 fits the inner wall of the connecting port 1531. The detection head 1523 is connected to the ball and socket damping at the bottom of the slider 152 through the ball joint 1522 to keep the detection head 1523 vertically downward when the device is offset or tilted.

[0037] By adopting the above technical solution, in the detection mechanism 15, the installation frame 151 slides in the sliding port 13, and a slider 152 is built in. The bottom of the slider 152 is provided with a ball socket and a ball joint 1522, which is connected to the detection head 1523. The eccentric wheel 153 rotates in the installation frame 151, and a docking slot 1521 is opened near the slider 152. The magnet 1511 is located above the eccentric wheel 153. The transmission shaft 154 passes through the connection port 1531 of the eccentric wheel 153, the installation frame 151 and the docking slot 1521 of the slider 152, and the two ends extend to the docking groove 12, and the gear 1541 at one end thereof is meshed with the rack 173. The connection port 1531 is non-circular and adapted to the outer wall of the transmission shaft 154.

[0038] A cavity 18 is provided inside the trolley body 1, and a cavity 2 19 is provided inside the trolley body 1 above the cavity 18. A transmission shaft 2 161 is rotatably connected in the cavity 18, a bevel gear 162 is fixedly connected to the circumferential outer surface of the transmission shaft 2 161, a half gear 164 is rotatably connected to the inner wall of the cavity 2 19, a rack 2 165 is slidably connected to the inner wall of the cavity 2 19, and the rack 2 165 is fixedly connected to the mounting frame 151. A gear set 163 is rotatably connected to the top of the cavity 18, and the bevel gear 162 is transmission-connected to the half gear 164 through the gear set 163 to realize the reciprocating motion of the detection mechanism 15 when the trolley moves. Both ends of the transmission shaft 2 161 extend to the outside of the trolley body 1, and the end of the transmission shaft 2 161 located outside the trolley body 1 is rotatably connected to the roller 2 1611, and the rolling of the roller 2 1611 drives the transmission shaft 2 161 to rotate, thereby driving the swing mechanism 16 to work.

[0039] By adopting the above technical solution, a cavity 18 and a cavity 2 19 are arranged in the trolley body 1, and the cavity 2 19 is connected to the sliding port 13. The transmission shaft 2 161 rotates in the cavity 18, and the two ends are connected to the roller 2 1611, and the bevel gear 162 is fixed outside. The gear set 163 rotates at the top of the cavity 18 and meshes with the bevel gear 162. The half gear 164 rotates in the cavity 2 19, and the sliding rack 2 165 is meshed. The rack 2 165 is connected to the mounting frame 151, and the top of the gear set 163 drives the half gear 164.

[0040] When the present invention is in use, an installation cavity 11 is opened at the top of the trolley body 1 near the tail end, a slide plate 171 in the pushing mechanism 17 is slidably installed inside the installation cavity 11, a push handle 172 is provided at the top of the slide plate 171 near the tail end, a sliding opening 13 is opened at the middle position of the top of the trolley body 1, and docking grooves 12 are opened at the top of the trolley body 1 near the two ends of the sliding opening 13, the docking groove 12 is connected to the installation cavity 11, a rack 173 is fixedly connected to the front end of the slide plate 171, and the rack 173 is installed inside the docking groove 12, and rollers 14 are rotatably connected on both sides of the trolley body 1.

[0041] The installation frame 151 of the detection mechanism 15 is slidably installed inside the sliding port 13, and a slider 152 is slidably connected inside the installation frame 151. A ball socket is provided at the bottom of the slider 152. A ball joint 1522 is rotatably connected inside the ball socket. A detection head 1523 is connected to the bottom of the ball joint 1522. An eccentric wheel 153 is rotatably connected to the position of the slider 152 inside the installation frame 151. A docking groove 1521 is provided at the position of the slider 152 near the eccentric wheel 153. A magnet 1511 is installed inside the installation frame 151 just above the eccentric wheel 153. A connecting port 1531 is provided on the side wall of the heart wheel 153, and a transmission shaft 154 is slidably connected inside the connecting port 1531. At the same time, the transmission shaft 154 penetrates the docking groove 1521 of the installation frame 151 and the slider 152 and is slidably connected. Both ends of the transmission shaft 154 extend to the inside of the docking groove 12, and at the same time, one end located inside the docking groove 12 is fixedly connected with a gear 1541, and the gear 1541 is meshed with the rack 173. The opening position of the connecting port 1531 is non-circular, and the outer wall of the transmission shaft 154 is adapted to the shape of the inner wall of the connecting port 1531.

[0042] A cavity 18 is provided on the inner side of the trolley body 1 near the bottom, and a cavity 2 19 is provided on the inner side of the trolley body 1 at the top of the cavity 18. The cavity 2 19 is connected to the slide 13. The transmission shaft 2 161 in the swing mechanism 16 is rotatably connected to the inside of the cavity 18. Both ends of the transmission shaft 2 161 pass through the outside of the trolley body 1. At the same time, the two ends located outside the trolley body 1 are rotatably connected to the roller 2 1611. The outer surface of the circumference of the transmission shaft 2 161 is fixedly connected to a bevel gear 162. A gear set 163 is rotatably connected to the top of the cavity 18. The bevel gear 162 is meshed with the gear set 163. A half gear 164 is rotatably connected to the inside of the cavity 2 19. At the same time, a rack 2 165 is slidably connected. The half gear 164 is meshed with the rack 2 165. The rack 2 165 is fixedly connected to the mounting frame 151 on one side. The cavity 2 19 through which the top output end of the gear set 163 passes is connected to the half gear 164.

[0043] When the bottom of the detection head 1523 is in a normal state, the bottom is kept close to the ground, and the internal height of the docking slide 1521 is greater than the height of the transmission shaft 154. When in use, the push handle 172 is used to push the device to move. First, the push handle 172 is pushed to drive the slide 171 to move toward the slide 13. The slide 171 drives the gear 1541 to rotate through the moving rack 173. The moving distance of the rack 173 is only enough to drive the gear 1541 to rotate 180 degrees. When the gear 1541 rotates, it will drive the transmission shaft 154 to rotate. The transmission shaft 154 drives the eccentric The wheel 153 rotates 180 degrees. When the eccentric wheel 153 rotates 180 degrees, it will contact with the magnet 1511. The eccentric wheel 153 is made of metal. After the magnet 1511 contacts the eccentric wheel 153, the eccentric wheel 153 is positioned to prevent it from detaching. The rotation of the eccentric wheel 153 will push the slider 152 to rise. The slider 152 rises and drives the detection head 1523 to rise away from the ground. The detection head 1523 rises away from the ground to prevent the device from colliding with foreign objects on the ground when moving, and it also helps to detect signals.

[0044] When the slide plate 171 moves and drives the gear 1541 to rotate 180 degrees, it will not be able to move inside the installation cavity 11. At this time, the force on the push handle 172 will be transmitted to the trolley body 1, so that the trolley body 1 moves. When the trolley body 1 moves, it will drive the roller 2 1611 to rotate and roll. The rotation of the roller 2 1611 drives the transmission shaft 2 161 to rotate. The rotation of the transmission shaft 2 161 drives the bevel gear 162 to rotate. The rotation of the bevel gear 162 drives the gear set 163 to rotate. The rotation of the gear set 163 will drive the half gear 164 to rotate through the transmission shaft. There are two half gears 164. The gear set 163 drives the two gears to rotate in opposite directions. The teeth of the two half gears 164 face opposite directions. The rotation of the two half gears 164 will drive the rack 2 165 to reciprocate inside the cavity 2 19. The movement of the rack 2 165 will drive the detection The mechanism 15 performs reciprocating motion, and when the device moves, it will drive the detection mechanism 15 to reciprocate to expand the detection range and determine the accuracy of the detection direction. When the installation frame 151 and the slider 152 move, they will be slidably connected with the transmission shaft 154 without affecting the position of the eccentric wheel 153. When the underground pipeline is detected to be correct, first pull the push handle 172 backward to drive the slide plate 171 to move in the opposite direction through the push handle 172. After the reverse movement, the gear 1541 will be driven to rotate in the opposite direction through the rack 173, thereby driving the eccentric wheel 153 to rotate in the opposite direction and causing the detection head 1523 to fall close to the ground. The ball joint 1522 is connected to the ball socket damping at the bottom of the slider 152. The detection head 1523 will remain vertically downward due to gravity. When the device is offset and tilted, the flexibility of the ball joint 1522 will ensure that the detection head 1523 remains vertically downward.

[0045] The present invention significantly improves the performance and convenience of underground pipeline measurement through the innovative design of component connection relationships. Specifically, the detection head 1523 is connected to the slider 152 through a spherical joint 1522 to ensure that it remains vertical during measurement, thereby improving measurement accuracy; the pushing mechanism 17 simplifies the operation and reduces labor intensity; the automatic lifting function of the detection head 1523 effectively prevents equipment collision and extends its service life; the swing mechanism 16 realizes the reciprocating motion of the detection mechanism 15 through complex transmission, thereby expanding the detection range and improving detection efficiency. In summary, the present invention performs well in terms of accuracy, stability, ease of operation, equipment protection and detection efficiency, and has significant beneficial effects.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rapid positioning device for underground pipeline measurement, characterized in that: include: A trolley body (1), wherein the top of the trolley body (1) is provided with a mounting cavity (11), a docking groove (12) and a sliding opening (13); A pushing mechanism (17), the pushing mechanism (17) comprising a slide plate (171), a push handle (172) and a rack (173), the slide plate (171) being slidably mounted inside the mounting cavity (11), the rack (173) being slidably mounted inside the docking groove (12), one end of the rack (173) being fixedly connected to the slide plate (171), and the push handle (172) being fixedly mounted on the top of the slide plate (171); A detection mechanism (15), the detection mechanism (15) comprising a mounting frame (151), a slider (152), a transmission shaft (154), a detection head (1523) and an eccentric wheel (153), the mounting frame (151) being slidably mounted inside the sliding opening (13), the slider (152) being slidably connected inside the mounting frame (151), a ball socket being provided at the bottom of the slider (152), a spherical joint (1522) being rotatably connected to the inner wall of the ball socket being provided at the top of the detection head (1523), and the eccentric wheel (153) being rotatably connected inside the mounting frame (151); A swing mechanism (16), the swing mechanism (16) being arranged inside the trolley body (1), the swing mechanism (16) comprising a second transmission shaft (161), a bevel gear (162), a gear set (163), a half gear (164) and a second rack (165), wherein the half gear (164) is meshingly connected with the second rack (165), and the second rack (165) is fixedly connected with the detection mechanism (15); The eccentric wheel (153) is provided with a connecting port (1531) on the side wall, and a docking groove (1521) is provided on the side wall of the slider (152) near the connecting port (1531). The transmission shaft (154) is slidably connected to the connecting port (1531) and the docking groove (1521). Both ends of the transmission shaft (154) extend into the docking groove (12), and the end of the transmission shaft (154) located in the docking groove (12) is fixedly connected with a gear (1541), and the gear (1541) is meshingly connected with a rack (173).

2. The underground pipeline measurement rapid positioning device according to claim 1, characterized in that: A magnet (1511) is provided inside the installation frame (151) at a position above the eccentric wheel (153) for positioning the eccentric wheel (153) when the eccentric wheel (153) rotates to a specific position.

3. The underground pipeline measurement rapid positioning device according to claim 1 is characterized by: The trolley body (1) is provided with a cavity 1 (18) inside, and a cavity 2 (19) is provided inside the trolley body (1) at a position above the cavity 1 (18). A transmission shaft 2 (161) is rotatably connected inside the cavity 1 (18), and a bevel gear (162) is fixedly connected to the outer circumferential surface of the transmission shaft 2 (161). The half gear (164) is rotatably connected to the inner wall of the cavity 2 (19), and the rack 2 (165) is slidably connected to the inner wall of the cavity 2 (19). The rack 2 (165) is fixedly connected to the mounting frame (151). A gear set (163) is rotatably connected to the top of the cavity 1 (18), and the bevel gear (162) is transmission-connected to the half gear (164) through the gear set (163), so as to realize the reciprocating motion of the detection mechanism (15) when the trolley moves.

4. The underground pipeline measurement rapid positioning device according to claim 1, characterized in that: Both ends of the second transmission shaft (161) extend to the outside of the trolley body (1), and the end of the second transmission shaft (161) located outside the trolley body (1) is rotatably connected to the second roller (1611), and the rolling of the second roller (1611) drives the second transmission shaft (161) to rotate, thereby driving the swing mechanism (16) to work.

5. The underground pipeline measurement rapid positioning device according to claim 1, characterized in that: The inner wall of the connection port (1531) is non-circular, and the outer shape of the transmission shaft 1 (154) fits the inner wall of the connection port (1531).

6. The underground pipeline measurement rapid positioning device according to claim 1, characterized in that: The detection head (1523) is connected to the ball and socket damping at the bottom of the slider (152) through a spherical joint (1522) to keep the detection head (1523) vertically downward when the device is offset or tilted.

Images