A contact net trackless measuring device

Abstract

The utility model relates to engineering surveying technical field, and disclose a kind of contact network trackless fixed measuring device, including surveying support and the surveying platform being set on surveying support, surveying support includes upper support mechanism and lower mobile platform, upper support mechanism and lower mobile platform upper and lower docking constitute I structure, surveying platform is installed on upper support mechanism, and lower mobile platform top middle position is equipped with the adjusting assembly for adjusting the level height of upper support mechanism and surveying platform. In the utility model, through the setting of adjusting assembly, it is convenient for the height of upper support mechanism and surveying platform to carry out accurate adjustment, so that surveying platform reaches the required measuring height, so that the height of ballast bed can be simulated, or by viewing data, the height difference of surveying platform is adjusted, so that the super height of track can be simulated, to reduce measurement error, avoid the error produced in traditional measurement due to multiple measurement accumulation, greatly improve the accuracy and efficiency of measurement.

Description

Technical Field

[0001] This utility model relates to the field of engineering measurement technology, specifically to a trackless contact wire measurement device. Background Technology

[0002] In the construction of urban rail transit overhead contact lines, trackless surveying is a crucial preliminary step, and its accuracy and efficiency directly affect the project's progress and quality. Traditional trackless surveying methods use total stations combined with track control points for positioning and setting out. While this method offers high accuracy, it also has a high operational threshold, requiring specialized personnel to perform a series of complex operations, including instrument setup, calibration, and data processing. From instrument setup and calibration to data collection and processing, every step must be strictly followed according to operating procedures; even slight negligence can lead to deviations in the measurement results. Furthermore, the adjustment and surveying processes are cumbersome and time-consuming, resulting in low efficiency. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a trackless contact wire measurement device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a trackless contact network measurement device, comprising a measuring bracket and a measuring platform mounted on the measuring bracket. The measuring bracket includes an upper support mechanism and a lower moving platform, which are connected vertically to form an I-beam structure. The measuring platform is mounted on the upper support mechanism. An adjustment component for adjusting the horizontal height of the upper support mechanism and the measuring platform is installed at the top center of the lower moving platform. A correction component for adjusting the horizontal position of the measuring platform is also provided in the middle of the upper support mechanism. The lower moving platform includes two support rods, two longitudinal square tubes, and one transverse square tube. The two support rods are horizontally symmetrically arranged and parallel to each other. The two longitudinal square tubes are vertically fixedly connected to the top center of the two support rods. The transverse square tube is horizontally arranged between the two longitudinal square tubes and is fixedly sleeved with the two longitudinal square tubes.

[0005] Furthermore, the upper support mechanism includes a support rod, two connecting rods, and two sliding rods. The support rod is horizontally positioned above the transverse square tube. The two connecting rods are symmetrically fixed on both sides of the bottom of the support rod. The two sliding rods are respectively fixedly connected to the bottom ends of the two connecting rods. The top of each of the two longitudinal square tubes is provided with a sliding groove. The two sliding rods extend into the two sliding grooves and are slidably connected to the two sliding grooves. The bottom ends of the two sliding rods are fixedly connected to a base plate. A first spring is provided inside the sliding groove, and the two ends of the first spring abut against the base plate and the bottom wall of the sliding groove, respectively.

[0006] Furthermore, the measuring platform includes a mounting rod, a mounting base for mounting a contact network laser detector, and two limiting components. The mounting rod is horizontally positioned directly above the support rod, and the two limiting components are symmetrically positioned on both sides of the bottom of the mounting rod. Limiting grooves are formed on both sides of the support rod, and the two limiting grooves extend into the interior of the two connecting supports. The two limiting components are respectively inserted into the two limiting grooves, and the mounting base is fixedly positioned on one side of the top of the mounting rod.

[0007] Furthermore, the adjustment assembly includes a rotating cylinder, an adjusting screw, a first locking nut, and a second locking nut. The rotating cylinder is rotatably mounted at the middle position of the top of the transverse square tube via a bearing. One end of the adjusting screw is threaded into the inside of the rotating cylinder, and the other end extends through the middle of the support rod to the bottom of the mounting rod and is fixedly connected to the mounting rod. The first locking nut and the second locking nut are located at the upper and lower ends of the support rod, respectively, and both the first nut and the second nut are threadedly connected to the adjusting screw.

[0008] Furthermore, both the first and second locking nuts have multiple handles evenly arranged along the circumferential direction on their outer walls.

[0009] Furthermore, the limiting assembly includes a lead screw, a T-nut, and a second spring. The top end of the lead screw is fixedly connected to the bottom of the mounting rod by an angle steel. The bottom end of the lead screw is inserted into the limiting groove and slidably connected to the limiting groove. The T-nut is threadedly connected to the outer wall of the lead screw and abuts against the top of the mounting rod. The second spring is movably sleeved on the outer wall of the lead screw, and both ends of the second spring abut against the T-nut and the angle steel, respectively.

[0010] Furthermore, pulleys are installed on one side of the bottom of the two support rods, and screw holes are opened on the side of the support rod away from the pulleys, with leveling screws threaded inside the screw holes.

[0011] Furthermore, a handle is provided at the middle position of the top of the mounting rod, and grooves are provided on both sides of the top of the mounting rod. A rotating shaft is fixedly connected to each of the two grooves, and the two ends of the handle are rotatably connected to the rotating shafts in the two grooves respectively.

[0012] Furthermore, the correction component includes two mounting blocks and two sets of miniature laser rangefinders. The two mounting blocks are symmetrically distributed about the central axis of the mounting blocks, and mounting grooves are opened on the opposite sides of the two mounting blocks. The two sets of miniature laser rangefinders are fixedly installed in the two mounting grooves respectively.

[0013] Compared with the prior art, the present invention has the following beneficial effects: In this invention, by adjusting the components, the height of the upper support mechanism and the measuring platform can be precisely adjusted to achieve the required measuring height. This allows for the simulation of the track bed height, or by viewing data and adjusting the height difference of the measuring platform, the track superelevation can be simulated, thus reducing measurement errors. After adjustment, the device integrates a contact wire laser detector, which can directly project the positioning point onto the tunnel top, avoiding errors accumulated from multiple measurements in traditional methods and greatly improving the accuracy and efficiency of the measurement. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a trackless contact wire measurement device according to the present invention. Figure 2 This is a schematic diagram of the structure of the mobile platform of this utility model; Figure 3 This is a schematic diagram of the connection structure between the upper support mechanism and the measuring platform of this utility model; Figure 4 This is a cross-sectional view of the overall structure of the trackless contact wire measurement device of this utility model.

[0015] In the diagram: 1. Measuring bracket; 2. Measuring platform; 3. Upper support mechanism; 4. Lower moving platform; 5. Adjustment component; 6. Correction component; 7. Pulley; 8. Leveling screw; 9. Handle; 10. Groove; 21. Mounting rod; 22. Mounting base; 23. Limiting component; 24. Lead screw; 25. T-nut; 26. Second spring; 27. Limiting groove; 31. Support rod; 32. Connecting support rod; 33. Sliding rod; 34. Slide groove; 35. Base plate; 36. First spring; 41. Foot support rod; 42. Longitudinal square tube; 43. Transverse square tube; 51. Rotary drum; 52. Adjusting screw; 53. First locking nut; 54. Second locking nut; 55. Handle; 61. Mounting block; 62. Miniature laser rangefinder. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] Please see Figures 1 to 4This utility model provides a trackless contact wire measurement device, including a measuring bracket 1 and a measuring platform 2 set on the measuring bracket 1. The measuring bracket 1 includes an upper support mechanism 3 and a lower moving platform 4, which are connected vertically to form an I-beam structure. The measuring platform 2 is installed on the upper support mechanism 3. An adjustment component 5 for adjusting the horizontal height of the upper support mechanism 3 and the measuring platform 2 is installed at the middle of the top of the lower moving platform 4. A correction component 6 for adjusting the horizontal position of the measuring platform 2 is also provided in the middle of the upper support mechanism 3. The lower moving platform 4 includes two support rods 41, two longitudinal square tubes 42 and one transverse square tube 43. The two support rods 41 are horizontally symmetrical and parallel to each other. The two longitudinal square tubes 42 are vertically fixedly connected to the middle of the top of the two support rods 41. The transverse square tube 43 is horizontally arranged between the two longitudinal square tubes 42 and is fixedly sleeved with the two longitudinal square tubes 42.

[0018] Before measurement, staff moved the device to the track foundation piles using the lower moving platform 4, ensuring its stability. Then, the adjustment component 5 precisely adjusted the horizontal height of the upper support mechanism 3 and the measuring platform 2 to achieve the required measurement height, thus simulating the track bed height. Alternatively, by checking data and adjusting the height difference of the measuring platform 2, the superelevation of the track could be simulated. After complete adjustment, the state after track laying could be simulated. Following height adjustment, the horizontal position of the measuring platform 2 was meticulously adjusted using the correction component 6 to ensure it was level and reduce measurement errors. After adjustment, the device integrated a contact wire laser detector, which could directly project the positioning point onto the tunnel top, avoiding errors accumulated from multiple measurements in traditional methods, greatly improving accuracy and efficiency. Simultaneously, the lower moving platform 4 provided a stable support foundation for the two support rods 41. The combination of two longitudinal square tubes 42 and one transverse square tube 43 not only enhanced the overall structural stability but also made the device more flexible and convenient to move and adjust.

[0019] Specifically, the upper support mechanism 3 includes a support rod 31, two connecting rods 32, and two sliding rods 33. The support rod 31 is horizontally positioned above the transverse square tube 43. The two connecting rods 32 are symmetrically fixed on both sides of the bottom of the support rod 31. The two sliding rods 33 are respectively fixedly connected to the bottom ends of the two connecting rods 32. The top of each of the two longitudinal square tubes 42 is provided with a sliding groove 34. The two sliding rods 33 extend into the two sliding grooves 34 and are slidably connected to the two sliding grooves 34. The bottom ends of the two sliding rods 33 are fixedly connected to a base plate 35. A first spring 36 is provided inside the sliding groove 34. The two ends of the first spring 36 abut against the base plate 35 and the inner bottom wall of the sliding groove 34, respectively.

[0020] The measuring platform 2 includes a mounting rod 21, a mounting base 22 for mounting a contact wire laser detector, and two limiting components 23. The mounting rod 21 is horizontally positioned directly above the support rod 31. The two limiting components 23 are symmetrically positioned on both sides of the bottom of the mounting rod 21. Limiting grooves 27 are provided on both sides of the support rod 31. The two limiting grooves 27 extend into the interior of the two connecting support rods 32. The two limiting components 23 are respectively inserted into the two limiting grooves 27. The mounting base 22 is fixedly positioned on one side of the top of the mounting rod 21.

[0021] The adjusting assembly 5 includes a rotating drum 51, an adjusting screw 52, ​​a first locking nut 53, and a second locking nut 54. The rotating drum 51 is rotatably mounted at the middle position of the top of the transverse square tube 43 via a bearing. One end of the adjusting screw 52 is threaded into the inside of the rotating drum 51, and the other end extends through the middle of the support rod 31 to the bottom of the mounting rod 21 and is fixedly connected to the mounting rod 21. The first locking nut 53 and the second locking nut 54 are located at the upper and lower ends of the support rod 31, respectively, and both the first nut and the second nut are threadedly connected to the adjusting screw 52.

[0022] In the initial state, the first locking nut 53 and the second locking nut 54 are threaded to the outer wall of the adjusting screw 52 and located at the upper and lower ends of the support rod 31, respectively. When it is necessary to adjust the height of the upper support mechanism 3, the first locking nut 53 is rotated by rotating the rotating drum 51 to adjust the height as needed, so that the second locking nut 54 moves downward along the outer wall of the adjusting screw 52. Then, by rotating the rotating drum 51, the rotating drum 51 drives the adjusting screw 52 to rotate. Since the adjusting screw 52 is fixedly connected to the mounting rod 21, and the mounting rod 21 cooperates with the limiting groove 27 of the support rod 31 through the limiting component 23, the mounting rod 21 will not rotate with the adjusting screw 52, ​​but will move along the axial direction of the adjusting screw 52, ​​thereby driving the upper support mechanism 3 to rise or fall as a whole.

[0023] The limiting assembly 23 includes a lead screw 24, a T-nut 25, and a second spring 26. The top end of the lead screw 24 is fixedly connected to the bottom of the mounting rod 21 by an angle steel. The bottom end of the lead screw 24 is inserted into the limiting groove 27 and is slidably connected to the limiting groove 27. The T-nut 25 is threadedly connected to the outer wall of the lead screw 24 and abuts against the top of the mounting rod 21. The second spring 26 is movably sleeved on the outer wall of the lead screw 24, and both ends of the second spring 26 abut against the T-nut 25 and the angle steel, respectively.

[0024] When the height of the measuring platform 2 needs to be adjusted, rotate the T-nut 25 according to the required adjustment height position, so that the T-nut 25 moves up or down along the outer wall of the screw 24. Then, rotate the first locking nut 53 or the second locking nut 54 according to the required adjustment height. If the mounting rod 21 needs to be moved upward, rotate the first locking nut 53 upward to make room for the required space. If the mounting rod 21 needs to be moved downward, rotate the second locking nut 54 downward. Then rotate the rotating drum 51 to drive the adjusting screw 52 to move. Since the screw 24 and the bottom of the mounting rod 21 are fixedly connected by angle steel, and the screw 24 can only slide axially in the limiting groove 27, when the adjusting screw 52 moves, it can drive the mounting rod 21 and the measuring platform 2 connected to its top to rise or fall as a whole, so as to achieve precise adjustment of the height of the measuring platform 2. After the measuring platform 2 is adjusted to the appropriate height, tighten the first locking nut 53 and the second locking nut 54 again so that they fit tightly against the upper and lower ends of the support rod 31 respectively. At the same time, the T-nut 25 also fits tightly against the top of the mounting rod 21. Through these three locking and fixing points, it is ensured that the upper support mechanism 3 and the measuring platform 2 remain stable at the adjusted height position and will not change height due to slight external disturbances, thus ensuring the accuracy and reliability of the contact wire trackless fixed measurement device during the measurement process.

[0025] Meanwhile, the first spring 36 and the second spring 26 can act as a buffer when the device is subjected to vibration or external impact, further enhancing the adaptability and measurement stability of the trackless contact wire measurement device in complex environments.

[0026] Multiple handles 55 are evenly provided on the outer walls of both the first locking nut 53 and the second locking nut 54 along the circumferential direction.

[0027] The handle 55 is designed to facilitate the operator to rotate the first locking nut 53 and the second locking nut 54. During the adjustment of the height of the upper support mechanism 3, no additional tools are needed. The operator can easily rotate the first locking nut 53 and the second locking nut 54 by simply holding the handle 55 with their hand. This greatly improves the convenience and efficiency of the adjustment, while also reducing the difficulty of operation and making the entire height adjustment process smoother.

[0028] Two support rods 41 are fitted with pulleys 7 on one side of their bottom. A threaded hole is located on the side of the support rod 41 away from the pulleys 7, and a leveling screw 8 is threaded into the hole. Due to the numerous positioning points within the tunnel and the frequent movement of the device, the physical exertion on the testing personnel is still considerable. Therefore, the pulleys 7 at the bottom of the support rods 41 facilitate the flexible movement of the device within the tunnel, effectively reducing the burden on the testing personnel. The leveling screw 8 allows the device to be adjusted for levelness when placed on uneven ground, ensuring the stability of the measurement platform 2 and thus guaranteeing the accuracy of the measurement data. This combination of pulleys 7 and leveling screw 8 improves the ease of movement of the device and enhances its adaptability and measurement stability in complex terrain.

[0029] A handle 9 is provided at the middle position of the top of the mounting rod 21. Grooves 10 are provided on both sides of the top of the mounting rod 21. A rotating shaft is fixedly connected in both grooves 10. The two ends of the handle 9 are rotatably connected to the rotating shafts in the two grooves 10 respectively.

[0030] The handle 9 can rotate around the pivot within the groove 10, making it easy for staff to push the device. When it is necessary to move or transport the trackless contact network measuring device, the handle 9 is rotated to the appropriate position, and the operator can easily lift or drag the device by gripping the handle 9 and applying force. This facilitates the handling and movement of the device and further enhances the ease of use of the device.

[0031] The correction component 6 includes two mounting blocks 61 and two sets of miniature laser rangefinders 62. The two mounting blocks 61 are symmetrically distributed about the central axis of the mounting blocks 61, and mounting grooves are opened on the opposite sides of the two mounting blocks 61. The two sets of miniature laser rangefinders 62 are fixedly installed in the two mounting grooves respectively.

[0032] By installing a correction component 6 in the middle of the support rod 31, when the device is moved to the track foundation pile, to ensure that the measuring platform 2 is at the center point of the track, two sets of miniature laser rangefinders 62 emit laser beams to both sides of the support rod 31 to measure the relative distance between the platform 2 and the sides of the track. When the distance data fed back by the laser rangefinders on both sides are equal, it can be determined that the measuring platform 2 is accurately located at the center point of the track, effectively avoiding measurement errors caused by positional deviations and improving the accuracy and reliability of the fixed-point measurement operation. It is worth noting that if the laser beam on one side of the support rod 31 is blocked, it indicates that the position of the measuring platform 2 is offset. At this time, the position of the measuring platform 2 can be adjusted according to the direction of the blocked laser beam until the distance data fed back by the laser rangefinders on both sides are equal again, ensuring that the measuring platform 2 is accurately located at the center point of the track. This method of position correction using the correction component 6 and the miniature laser rangefinders 62 is simple to operate, reacts quickly, and can quickly and accurately complete the positioning of the measuring platform 2, effectively improving the quality and efficiency of the entire measurement work.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A trackless contact wire measurement device, comprising a measuring bracket (1) and a measuring platform (2) mounted on the measuring bracket (1), characterized in that, The measuring bracket (1) includes an upper support mechanism (3) and a lower moving platform (4). The upper support mechanism (3) and the lower moving platform (4) are connected vertically to form an I-beam structure. The measuring platform (2) is installed on the upper support mechanism (3). An adjustment component (5) for adjusting the horizontal height of the upper support mechanism (3) and the measuring platform (2) is installed at the middle of the top of the lower moving platform (4). A correction component (6) for adjusting the horizontal position of the measuring platform (2) is also provided in the middle of the upper support mechanism (3). The lower moving platform (4) includes two foot support rods (41), two longitudinal square tubes (42), and one transverse square tube (43). The two foot support rods (41) are arranged horizontally symmetrically and are parallel to each other. The two longitudinal square tubes (42) are vertically fixedly connected to the middle of the top of the two foot support rods (41). The transverse square tube (43) is horizontally arranged between the two longitudinal square tubes (42) and is fixedly sleeved with the two longitudinal square tubes (42).

2. The contact wire trackless measurement device according to claim 1, characterized in that, The upper support mechanism (3) includes a support rod (31), two connecting rods (32) and two sliding rods (33). The support rod (31) is horizontally arranged above the transverse square tube (43). The two connecting rods (32) are symmetrically fixed on both sides of the bottom of the support rod (31). The two sliding rods (33) are respectively fixedly connected to the bottom ends of the two connecting rods (32). The top of the two longitudinal square tubes (42) is provided with a sliding groove (34). The two sliding rods (33) extend into the two sliding grooves (34) and are slidably connected to the two sliding grooves (34). The bottom ends of the two sliding rods (33) are fixedly connected to a base plate (35). A first spring (36) is provided inside the sliding groove (34). The two ends of the first spring (36) abut against the bottom plate (35) and the bottom wall of the sliding groove (34) respectively.

3. The contact wire trackless measurement device according to claim 1, characterized in that, The measuring platform (2) includes a mounting rod (21), a mounting base (22) for mounting a contact wire laser detector, and two limiting components (23). The mounting rod (21) is horizontally positioned directly above the support rod (31). The two limiting components (23) are symmetrically positioned on both sides of the bottom of the mounting rod (21). Limiting grooves (27) are provided on both sides of the support rod (31). The two limiting grooves (27) extend into the interior of the two connecting rods (32). The two limiting components (23) are respectively inserted into the two limiting grooves (27). The mounting base (22) is fixedly positioned on one side of the top of the mounting rod (21).

4. The contact wire trackless measurement device according to claim 2, characterized in that, The adjustment assembly (5) includes a rotating drum (51), an adjusting screw (52), a first locking nut (53), and a second locking nut (54). The rotating drum (51) is rotatably mounted at the middle position of the top of the transverse square tube (43) via a bearing. One end of the adjusting screw (52) is threaded into the inside of the rotating drum (51), and the other end extends through the middle of the support rod (31) to the bottom end of the mounting rod (21) and is fixedly connected to the mounting rod (21). The first locking nut (53) and the second locking nut (54) are located at the upper and lower ends of the support rod (31), respectively, and both the first nut and the second nut are threadedly connected to the adjusting screw (52).

5. The contact wire trackless measurement device according to claim 4, characterized in that, The outer walls of the first locking nut (53) and the second locking nut (54) are evenly provided with multiple handles (55) along the circumferential direction.

6. The contact wire trackless measurement device according to claim 3, characterized in that, The limiting component (23) includes a lead screw (24), a T-nut (25), and a second spring (26). The top end of the lead screw (24) is fixedly connected to the bottom of the mounting rod (21) by an angle steel. The bottom end of the lead screw (24) is inserted into the limiting groove (27) and is slidably connected to the limiting groove (27). The T-nut (25) is threadedly connected to the outer wall of the lead screw (24) and abuts against the top of the mounting rod (21). The second spring (26) is movably sleeved on the outer wall of the lead screw (24), and both ends of the second spring (26) abut against the T-nut (25) and the angle steel, respectively.

7. The contact wire trackless measurement device according to claim 1, characterized in that, A pulley (7) is installed on one side of the bottom of the two support rods (41). A screw hole is opened on the side of the support rod (41) away from the pulley (7), and a leveling screw (8) is threaded inside the screw hole.

8. The contact wire trackless measurement device according to claim 3, characterized in that, A handle (9) is provided at the middle position of the top of the mounting rod (21). Grooves (10) are provided on both sides of the top of the mounting rod (21). Rotating shafts are fixedly connected in both grooves (10). The two ends of the handle (9) are rotatably connected to the rotating shafts in the two grooves (10).

9. The trackless contact wire measurement device according to claim 1, characterized in that, The correction component (6) includes two mounting blocks (61) and two sets of miniature laser rangefinders (62). The two mounting blocks (61) are symmetrically distributed about the central axis of the mounting blocks (61), and mounting grooves are opened on the opposite side of the two mounting blocks (61). The two sets of miniature laser rangefinders (62) are fixedly installed in the two mounting grooves respectively.

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