A folding linear pipe line profile measuring device
By designing a foldable straight pipe jacking alignment measurement device, the problems of insufficient measurement accuracy and complex operation in pipe jacking construction were solved, achieving efficient and accurate pipe jacking alignment measurement, and reducing costs and space occupation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SCEGC MECHANIZED CONSTR GRP COMPANY
- Filing Date
- 2025-06-30
- Publication Date
- 2026-08-04
AI Technical Summary
Existing technologies for pipe jacking construction suffer from insufficient measurement accuracy, complex operation, and space requirements. In particular, it is difficult to achieve efficient and accurate pipe jacking alignment measurement in the case of pipelines under complex roads.
A foldable straight pipe jacking alignment measurement device was designed, including a clamping mechanism, a folding ruler, an adjustable target, and a telescopic fixing mechanism. Combined with a laser source and a reflector, it can quickly measure the alignment of the jacking pipe, adapt to pipe rotation and confined spaces, and simplify the operation process.
It improves measurement accuracy and construction efficiency, reduces costs, decreases equipment complexity and space occupation, adapts to different pipe diameters and complex environments, and simplifies construction steps.
Smart Images
Figure CN224593852U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of municipal engineering pipe jacking construction technology, and in particular to a foldable straight pipe jacking alignment measuring device. Background Technology
[0002] As urban road pipeline networks are gradually improved, urban stormwater and sewage pipeline projects are shifting from overall new construction to partial renovation. To avoid large-scale damage to road structures, shorten construction periods, and reduce costs, the tunneling method, i.e., pipe jacking, is commonly used. For long-distance, medium-to-large diameter pipe jacking, pipe jacking machines are often used with automatic correction, but the cost is too high and unsuitable for partial renovations. Therefore, plumb bobs or total stations are often used to measure the pipe jacking alignment. However, the existing road infrastructure is complex, and plumb bobs have insufficient accuracy to accurately control the jacking posture. While total stations offer high accuracy, their setup, leveling, and measurement procedures are complex, failing to meet the goal of shortening the construction period. Furthermore, the observation error gradually increases with the jacking distance, and there are also issues with occupying the working shaft and internal space of the pipe jacking system.
[0003] Patent CN205537635U proposes a simplified control and measurement system for the center of long-distance straight pipe jacking. This system involves installing several equally spaced adjustable pen holders and laser pens inside the pipe. The laser beams are uniformly directed towards the jacking direction. A measuring instrument is installed inside the working shaft to establish the pipe centerline, ensuring that all laser pens are aligned with the pipe centerline and lie on the same straight line. A target is positioned at the center of the jacking head, and the laser pens closest to the jacking head point towards the target center, thereby controlling the left-right and up-down offset of the jacking head. While this system solves the aforementioned problem, it does not consider that when the pipe rotates during jacking, the laser paths transmitted by each laser will no longer be on a straight line, leading to measurement errors. This could potentially cause problems with the correct calibration of the jacking head's jacking posture. Utility Model Content
[0004] To address existing problems, this utility model provides a foldable straight-line pipe jacking alignment measurement device. Its purpose is to quickly measure the pipe jacking alignment, avoiding the waste of time associated with complex measurements. The target center coincides with the pipe's center, ensuring measurement accuracy even if the pipe rotates, significantly improving construction efficiency while effectively reducing costs. It can be folded during non-measurement periods, reducing space requirements and making it more suitable for pipe jacking projects requiring manual excavation. Its simple structure and ease of use eliminate the need for measuring instruments, total stations, and other equipment to establish the pipe centerline within the pipe jacking shaft, saving on shaft design dimensions and reducing excavation and backfilling costs.
[0005] To achieve the above objectives, the present invention provides the following technical solution.
[0006] A foldable straight-line jacking pipe alignment measuring device includes a clamping mechanism, a folding ruler, an adjustable target, and a telescopic fixing mechanism for locking the angle between the clamping mechanism and the folding ruler. The clamping mechanism is used to clamp the measuring device to both sides of the end wall of the jacking pipe. One end of the folding ruler is hinged to the clamping mechanism. The folding ruler has a groove along its length and is divided into several short rulers connected by hinges. The adjustable target is provided with a laser source and a reflector, and the adjustable target is embedded in the groove to form a sliding connection. The telescopic fixing mechanism includes a telescopic rod and a first fixing bolt.
[0007] As a further improvement of this utility model, the folding ruler has bidirectional scale lines on its surface; the side of the folding ruler has a sliding groove, and a second fixing bolt, spring and slider are arranged in the sliding groove at the position corresponding to the hinge, for locking the folding ruler in the unfolded state.
[0008] As a further improvement of this utility model, the adjustable target also includes an E-shaped connecting mechanism, which includes a first connecting strip, a second connecting strip, a third connecting strip, and a T-shaped connecting strip. The two ends of the first connecting strip extend vertically out of the second and third connecting strips, respectively, for connecting the circular base plate and the laser source. The second and third connecting strips are located on the same side of the first connecting strip. The middle of the first connecting strip is connected to one side of the T-shaped connecting strip, and the other side of the T-shaped connecting strip is embedded in a groove provided on the side of the folding ruler to form a sliding connection. The T-shaped connecting strip is located on the same side of the first connecting strip as the second and third connecting strips.
[0009] As a further improvement of this utility model, it also includes a third fixing bolt; the first connecting strip has a first through hole in the middle of the plate surface along the vertical direction of the plate surface, the first through hole penetrates the T-shaped connecting strip, the first through hole is provided with a first internal thread, and the first internal thread corresponds to the third fixing bolt.
[0010] As a further improvement of this utility model, the laser source is a cylindrical structure, with the cylindrical structure part embedded in a groove.
[0011] As a further improvement of this utility model, the clamping mechanism includes an upper clamping plate, a lower clamping plate, an adjustable bolt, a rubber pad, and a suction cup; the upper clamping plate and the lower clamping plate are provided with corresponding bolt connection holes; the upper clamping plate and the lower clamping plate are connected by the adjustable bolt; rubber pads are provided on the plate surfaces opposite to the upper clamping plate and the lower clamping plate; a second through hole is provided on the side of the upper clamping plate, and the second through hole is used to hinge the telescopic rod.
[0012] As a further improvement of this utility model, a suction cup is provided on the surface of the upper clamping plate.
[0013] As a further improvement of this utility model, the telescopic fixing mechanism includes a sleeve arm and a telescopic rod; the sleeve arm is sleeved outside the telescopic rod; the sleeve arm includes a connecting rod big end, and the connecting big end is connected to the clamping mechanism through a first fixing bolt; one end of the telescopic rod is connected to the folding ruler.
[0014] As a further improvement of this utility model, the side of the folding ruler is provided with a groove, and a slider is provided in the groove; the telescopic rod includes a small end of a connecting rod, which is hinged to the slider.
[0015] As a further improvement of this utility model, a fourth fixing bolt is also included, which is used to lock the telescopic position between the sleeve arm and the telescopic rod.
[0016] This utility model has the following beneficial effects:
[0017] This measuring device integrates clamping, extension, measurement, targeting, and locking functions, reducing equipment complexity and adapting to the confined spaces of pipe jacking construction. The folding ruler's short-length design allows for storage and unfolding, meeting the measurement needs of different pipe diameters. The telescopic rod's adjustable angle ensures the folding ruler is perpendicular to the pipe axis, reducing tilting errors. A laser source emits a beam to the measuring device placed at the other end of the pipe for axis positioning and deviation measurement. The clamping mechanism can be fixed at various points on the pipe wall, effectively avoiding interference from ventilation, lighting pipelines, and excavation work, ensuring measurement accuracy. Using this device eliminates the need for space preparation time with total stations or elevation instruments, saving more time and effort compared to using a total station.
[0018] Preferably, the scale supports bidirectional reading, reducing the limitation of the operating angle, and is especially suitable for downhole or dark pipe environments; the spring pulls the slider to the hinge connection, and the folding ruler is automatically straightened after being forcibly unfolded, eliminating manual alignment errors.
[0019] Preferably, the E-shaped connecting mechanism engages with the slide groove via a T-shaped strip, constraining the target to slide only in the vertical direction, avoiding lateral offset, and helping to reduce measurement errors caused by shaking or unstable fixation due to the construction environment; at the same time, the E-shaped connecting mechanism cooperates with the outer contour of the folding ruler, which is beneficial to the stability of vertical sliding.
[0020] Preferably, the third fixing bolt is threaded to match the first through hole to lock the E-shaped connecting mechanism onto the folding ruler, thereby achieving the lifting and lowering positioning of the adjustable target.
[0021] Preferably, the columnar laser source is embedded in the groove, which uses physical limiting to suppress laser shaking and ensure the center offset of the light spot; the closed installation method prevents mud and water from entering, extends the life of the laser, and is suitable for the humid and dusty pipe jacking construction environment.
[0022] Preferably, the distance between the upper and lower clamping plates is adjusted by adjustable bolts; the rubber pad increases the coefficient of friction, reducing and absorbing the axial vibrations commonly encountered in pipe jacking operations.
[0023] Preferably, the suction cup adsorbs the folding ruler, reducing disassembly steps and the time spent switching between measurement and non-measurement states; it also frees up space on the pipe end face, facilitating simultaneous welding, grouting and other processes.
[0024] Preferably, the sleeve arm wraps around the telescopic rod for telescopic adjustment; the connecting big end has a hinge design, allowing for rapid angle adjustment.
[0025] Preferably, the telescopic rod is hinged to the slide groove, and the telescopic fixing mechanism can extend and retract synchronously when the folding ruler is unfolded, automatically maintaining the triangular support structure and reducing the frequency of manual intervention.
[0026] Preferably, the fourth fixing bolt is mechanically interlocked with the telescopic rod to prevent the sleeve arm from retracting unexpectedly and to ensure the stability of the structure during the measurement process. Attached Figure Description
[0027] The accompanying drawings described herein are for illustrative purposes only and do not limit the scope of this invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely schematic to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. In the drawings:
[0028] Figure 1 This is a schematic diagram of the unfolded shape measurement device for a folded straight jacking pipe as described in the embodiment;
[0029] Figure 2 This is a schematic diagram of the adjustable target displacement of a foldable linear jacking pipe alignment measuring device as described in the embodiment;
[0030] Figure 3 This is a folding schematic diagram of a folding linear jacking pipe alignment measuring device as described in the embodiment;
[0031] Figure 4 This is a schematic diagram of the clamping mechanism of a foldable straight jacking pipe alignment measuring device as described in the embodiment;
[0032] Figure 5 This is a schematic diagram of the adjustable target structure circular base plate of a foldable linear jacking pipe alignment measuring device described in the embodiment;
[0033] Figure 6 This is a schematic diagram of the adjustable target E-shaped connection structure of a foldable linear jacking pipe alignment measuring device described in the embodiment.
[0034] Figure 7 This is a schematic diagram illustrating the use of a folded linear jacking pipe alignment measuring device as described in the embodiment.
[0035] Figure 8 This is a schematic diagram of a foldable straight pipe jacking alignment measuring device and a pipe jacking jack placed separately, as described in the embodiment.
[0036] Figure 9 This is a schematic diagram of a folded linear jacking pipe alignment measuring device used for left-side jacking pipe advancement, as described in the embodiment.
[0037] Figure 10 This is a schematic diagram of a folded linear pipe jacking alignment measuring device used for right-side pipe jacking, as described in the embodiment.
[0038] Among them, 1. Clamping mechanism; 2. Folding ruler; 3. Adjustable target; 4. Telescopic fixing mechanism; 11. Upper clamping plate; 12. Lower clamping plate; 13. Rubber pad; 14. Bolt connection hole; 15. Adjustable bolt; 16. Second through hole; 17. Suction cup; 21. Hinge; 22. Groove; 23. Slide groove; 24. Slider; 25. Second fixing bolt; 26. Spring; 27. Bidirectional scale line; 28. Short ruler; 31. E-shaped connection structure; 3 2. Third fixing bolt; 33. Circular base plate; 34. Reflector; 35. Laser source; 41. Sleeve arm; 42. Telescopic rod; 43. First fixing bolt; 44. Fourth fixing bolt; 311. First connecting strip; 312. First through hole; 313. Second connecting strip; 314. Third connecting strip; 315. T-shaped connecting strip; 331. Horizontal line; 411. Connecting rod big end; 421. Connecting rod small end; 5. Jack. Detailed Implementation
[0039] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.
[0040] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.
[0041] Unless otherwise defined below, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0042] Example 1
[0043] like Figure 1 As shown, a foldable straight pipe profile measuring device includes a clamping mechanism 1, a folding ruler 2, an adjustable target 3, and a telescopic fixing mechanism 4 for locking the angle between the clamping mechanism 1 and the folding ruler 2.
[0044] The clamping mechanism 1 is used to clamp the measuring device to both sides of the end pipe wall of the construction jacking pipe. The folding ruler 2 is hinged to the clamping mechanism 1 at one end; the folding ruler 2 is provided with a groove 22 along its length direction, and the folding ruler 2 is divided into several short rulers 28, which are connected by hinges 21; the adjustable target 3 is provided with a laser source 35 and a reflector 34, and the adjustable target 3 is embedded in the groove 22 to form a sliding connection; the telescopic fixing mechanism 4 includes a telescopic rod 42 and a first fixing bolt 43.
[0045] The folding ruler 2 has bidirectional scale lines 27 on its surface; for example... Figure 3 As shown, the folding ruler 2 has a groove 23 on its side. A second fixing bolt 25, a spring 26, and a slider 24 are positioned within the groove 23 corresponding to the hinge 21 to lock the folding ruler 2 in its unfolded state. Specifically, one second fixing bolt 25 is located in a first circular groove within the groove 23, and another second fixing bolt 25 is located in a second circular groove at the center of the slider 24. The two second fixing bolts 25 are connected by the spring 26. Since the slider 24 has only one degree of freedom to move along the groove 23, and is confined near the hinge 21 by the spring 26, the hinge 21, after unfolding, is held in place by the "pin connection" formed between the slider 24 and the joint, thus fixing the two short rulers 28 on the same straight line, which improves the stability of the device. Scale lines are provided on both sides of the short rulers 28 for adjusting the movable target to align with the pipe center according to different pipe diameters.
[0046] like Figure 4As shown, the clamping mechanism 1 includes an upper clamping plate 11, a lower clamping plate 12, an adjustable bolt 15, a rubber pad 13, and a suction cup 17. Bolt connection holes 14 are correspondingly provided on the upper clamping plate 11 and the lower clamping plate 12. The upper clamping plate 11 and the lower clamping plate 12 are connected by the adjustable bolt 15. Rubber pads 13 are provided on the opposing surfaces of the upper clamping plate 11 and the lower clamping plate 12. A second through hole 16 is provided on the side of the upper clamping plate 11, which is used to hinge the telescopic rod 42. Specifically, the rubber pads 13 attached to the upper clamping plate 11 and the lower clamping plate 12 increase the contact area and friction between the clamping mechanism 1 and the inner and outer walls of the jacking pipe, and are applied to the wall of the jacking pipe being clamped. Two bolt connection holes 14 are symmetrically opened on the same side of the upper clamping plate 11 and the lower clamping plate 12 for the adjustable bolts 15 to pass through. The distance between the upper clamping plates 11 and the lower clamping plate 12 can be adjusted by adjusting the adjustable bolts 15 to adapt to different pipe wall thicknesses. Tighten the adjustable bolts 15 to fix them to the pipe wall at one end of the pipe.
[0047] The upper clamping plate 11 has a threaded second through hole 16 on its side, which serves as the fixing shaft of the telescopic fixing mechanism 4.
[0048] Optionally, the top surface of the upper clamping plate 11 also has a vertically upward suction cup 17, which can be used to fix the folding ruler 2 when it is in the folded state, providing space for other operations inside the pipe.
[0049] like Figure 5 and 6 As shown, the adjustable target 3 also includes an E-shaped connecting structure 31, which can slide up and down within the groove 23. Specifically, the E-shaped connecting structure 31 includes a first connecting strip 311, a second connecting strip 313, a third connecting strip 314, and a T-shaped connecting strip 315. The two ends of the first connecting strip 311 extend vertically from the second connecting strip 313 and the third connecting strip 314, respectively, to connect the circular base plate 33 and the laser source 35. The second connecting strip 313 and the third connecting strip 314 are located on the same side of the first connecting strip 311. The middle part of the first connecting strip 311 is connected to one side of the T-shaped connecting strip 315, and the other side of the T-shaped connecting strip 315 is embedded in the groove 23 provided on the side of the folding ruler 2 to form a sliding connection. The T-shaped connecting strip 315 is located on the same side of the first connecting strip 311 as the second connecting strip 313 and the third connecting strip 314.
[0050] The T-shaped connecting strip 315 has a first through hole 312 perpendicular to the surface of the first connecting strip 311. The first through hole 312 has a first internal thread, which corresponds to the third fixing bolt 32. By tightening the third fixing bolt 32 against the sliding groove 23, the movable target is fixed to the desired position. The second connecting strip 313 extends towards the folding ruler 2 and is connected to the circular base plate 33. Specifically, as shown... Figure 5As shown, a horizontal line 331 is drawn on the circular base plate 33. The horizontal line 331 passes through the center of the circular base plate 33. The upper edge of the second connecting strip 313 coincides with the horizontal line 331 and is used to align the bidirectional scale line 27.
[0051] Several 10mm x 10mm reflectors 34 are centrally affixed to the circular base plate 33. The number of reflectors 34 can be determined according to the allowable deviation values required by the specifications (affected by factors such as jacking length, pipe material, and pipe diameter). For example, for flexible joint pipes with a jacking length < 300m and a pipe diameter < 1500mm, the allowable deviation of the axis is ±50mm, and the allowable deviation of the elevation is +30mm to -40mm. Therefore, the reflectors 34 are arranged in a 10×7 pattern, that is, 10×3 are arranged above the horizontal line 331, and 10×4 are arranged below the horizontal line 331. The third connecting strip 314 extends to the other side of the folding ruler 2. A cylindrical bracket is set at one end of the third connecting strip 314, and a green or red laser source 35 is attached to the bracket. Part of the laser source 35 is located in the groove 22, and the center of the laser source 35 is aligned with the center of the circular base plate 33.
[0052] The laser source 35 is a cylindrical structure, with the cylindrical structure partially embedded in the groove 22. Specifically, the cylindrical mechanism can be a green laser pointer.
[0053] The telescopic fixing mechanism 4 includes a sleeve arm 41 and a telescopic rod 42. The sleeve arm 41 is sleeved outside the telescopic rod 42. The sleeve arm 41 includes a connecting rod big end 411, which is connected to the clamping mechanism 1 by a first fixing bolt 43 installed in the second through hole 16. The first fixing bolt 43 is tightened and fixed to the second through hole 16 on the upper clamping plate 11. One end of the telescopic rod 42 is connected to the folding ruler 2. Specifically, the folding ruler 2 has a sliding groove 23 on its side, and a slider 24 is provided in the sliding groove 23. The telescopic rod 42 includes a connecting rod small end 421, which is hinged to the slider 24. The sleeve arm 41 is also provided with a threaded hole for screwing in the fourth fixing bolt 44 to abut against the telescopic rod 42. When the folding ruler 2 is unfolded, the sleeve arm 41 and the telescopic rod 42 undergo relative displacement. When the telescopic fixing mechanism 4 extends to the appropriate position, the fourth fixing bolt 44 is tightened to lock the telescopic position between the sleeve arm 41 and the telescopic rod 42, so that the upper clamping plate 11, the folding ruler 2, and the telescopic fixing mechanism 4 form a stable right-angled triangular structure, which helps to reduce the relative displacement between the device components and ensure the accuracy of the measurement. When placing the folding ruler 2, it is necessary to keep the folding ruler 2 perpendicular to the axis of the jacking pipe.
[0054] This measuring device is used for pipe jacking construction with a straight layout (which may have a slope). When in use, two measuring devices can be clamped at both ends of the pipe (e.g., 40 meters apart). Two surveyors only need to communicate via walkie-talkie to turn on the laser source 35 of one measuring device and align it with the reflector 34 of the other measuring device placed at the other end of the pipe to quickly verify the left and right deviations and elevation.
[0055] Example 2
[0056] The difference between this embodiment and Embodiment 1 is that:
[0057] 1) The upper clamping plate 11 is a quadrangular frustum with a trapezoidal side, which can provide stable support for the folding ruler 2;
[0058] 2) The lower clamping plate 12 is relatively thin and can be bent appropriately according to the different diameters of the jacking pipe to better fit the outer wall of the jacking pipe.
[0059] The truncated quadrangular structure of the upper clamping plate 11 provides more space for the connecting rod big end 411 to rotate along the first fixing bolt 43, making it easier to adjust the angle of the telescopic fixing mechanism 4.
[0060] The lower clamping plate 12 is relatively thin, which is conducive to fitting the curved surface of the jacking pipe wall, improving the convenience of clamping and friction.
[0061] During measurement operations, the measuring device is fixed to the first jacking pipe entry end by the clamping mechanism 1. During other operations inside the pipe, the measuring device is folded and placed close to the pipe wall. The folding ruler 2 is unfolded, and the reflector 34 is illuminated by the laser source 35 in the working well to read the deviation value. When the jacking length is too long and the laser emission scattering causes a decrease in accuracy, a measuring device is added at the intermediate installation location, and the laser source 35 of the adjustable target 3 is turned on to illuminate the next target, realizing the graded transmission of laser, improving the measurement accuracy, and realizing the measurement function of the jacking pipe line shape.
[0062] Example 3
[0063] The difference between this embodiment and Embodiment 1 is that:
[0064] The clamping mechanism 1 is adjusted from the bottom to the side of the pipe wall to offset the jacks 5 from being arranged at multiple points along the pipe wall.
[0065] When the working shaft space is small, especially during bidirectional jacking, and it is impossible to set up an aligned laser source 35 or target inside the shaft or jacking pipe, it is not suitable to use a tripod to set up the total station. Instead, a device can be fixed at the jacking pipe entry end, or at any position on the pipe wall, avoiding the force application position of the jack 5. Figure 8 As shown.
[0066] like Figure 9As shown, when the jacking pipe advances to the left, the laser source 35 emits a pipe positioning beam, which shines on the jacking end of the pipe (from right to left in the figure) to measure the left and right deviations and elevation of the pipe.
[0067] like Figure 10 As shown, when the jacking in one direction ends and the jacking in another direction begins, i.e. when the jacking pipe is pushed to the right, the adjustable target 3 can be flipped so that the laser source 35 is directed toward the pipe on the other side for positioning measurement (from left to right in the figure).
[0068] The specific steps for using this utility model are as follows:
[0069] Step 1: Based on the material and dimensions of the jacking pipe, select the required quantities of 28mm short rulers and 34mm reflectors, assemble and fix the measuring device at the pipe inlet end. Figure 1 ;
[0070] Step 2: Based on the inner diameter of the pipe, move the center of the adjustable target 3 to coincide with the center of the pipe, such as... Figure 2 ;
[0071] Step 3: Progress in sections. During non-measuring periods such as jacking and soil removal, fold the measuring device, such as... Figure 3 ;
[0072] Step 4: After each advance of a certain distance, deploy the measuring device to observe the deviation between the target center and the laser source 35 in the working well, and make timely adjustments.
[0073] Step 5: After the jacking reaches a certain length, a measuring device is added for transfer and retesting, such as... Figure 6 .
[0074] The above embodiments are merely one of the implementation methods for achieving the technical solution of this utility model. The scope of protection claimed by this utility model is not limited to the embodiments described herein, but also includes any variations, substitutions, and other implementation methods that are readily conceived by those skilled in the art within the scope of the technology disclosed in this utility model. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various variations, modifications, substitutions, and alterations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.
Claims
1. A foldable linear jacking pipe alignment measuring device, characterized in that, The device includes a clamping mechanism, a folding ruler, an adjustable target, and a telescopic fixing mechanism for locking the angle between the clamping mechanism and the folding ruler. The clamping mechanism is used to clamp the measuring device to both sides of the end wall of the jacking pipe. One end of the folding ruler is hinged to the clamping mechanism. The folding ruler has a groove along its length and is divided into several short rulers connected by hinges. The adjustable target is equipped with a laser source and a reflector, and the adjustable target is embedded in the groove to form a sliding connection. The telescopic fixing mechanism includes a telescopic rod and a first fixing bolt.
2. The folded linear jacking pipe alignment measuring device according to claim 1, characterized in that, The folding ruler has bidirectional scale lines on its surface; the side of the folding ruler has a sliding groove, and a second fixing bolt, spring and slider are installed in the sliding groove at the position corresponding to the hinge to lock the folding ruler in the unfolded state.
3. The folded linear jacking pipe alignment measuring device according to claim 1, characterized in that, The adjustable target also includes an E-shaped connecting mechanism, which comprises a first connecting plate, a second connecting plate, a third connecting plate, and a T-shaped connecting plate. The two ends of the first connecting plate extend vertically outward from the second and third connecting plates, respectively, for connecting the circular base plate and the laser source. The second and third connecting plates are located on the same side of the first connecting plate. The middle of the first connecting plate is connected to one side of the T-shaped connecting plate, and the other side of the T-shaped connecting plate is embedded in a groove provided on the side of the folding ruler to form a sliding connection. The T-shaped connecting plate is located on the same side of the first connecting plate as the second and third connecting plates.
4. The folded linear jacking pipe alignment measuring device according to claim 3, characterized in that, It also includes a third fixing bolt; the first connecting strip has a first through hole in the middle of the plate surface along the vertical direction of the plate surface, the first through hole penetrates the T-shaped connecting strip, the first through hole is provided with a first internal thread, and the first internal thread corresponds to the third fixing bolt.
5. The folded linear jacking pipe alignment measuring device according to claim 1, characterized in that, The laser source is a cylindrical structure, with a portion of the cylindrical structure embedded in a groove.
6. The folded linear jacking pipe alignment measuring device according to claim 1, characterized in that, The clamping mechanism includes an upper clamping plate, a lower clamping plate, an adjustable bolt, a rubber pad, and a suction cup; the upper clamping plate and the lower clamping plate are provided with corresponding bolt connection holes; the upper clamping plate and the lower clamping plate are connected by the adjustable bolt; rubber pads are provided on the opposite surfaces of the upper clamping plate and the lower clamping plate; a second through hole is provided on the side of the upper clamping plate, which is used to hinge the telescopic rod.
7. A foldable linear jacking pipe alignment measuring device according to claim 6, characterized in that, The upper clamping plate is equipped with suction cups on its surface.
8. The folded linear jacking pipe alignment measuring device according to claim 1, characterized in that, The telescopic fixing mechanism includes a sleeve arm and a telescopic rod; the sleeve arm is sleeved outside the telescopic rod; the sleeve arm includes a connecting rod big end, which is connected to the clamping mechanism through a first fixing bolt; one end of the telescopic rod is connected to the folding ruler.
9. A foldable straight-line jacking pipe alignment measuring device according to claim 8, characterized in that, The folding ruler has a groove on its side, and a slider is installed in the groove; the telescopic rod includes a small end of a connecting rod, which is hinged to the slider.
10. A folded linear jacking pipe alignment measuring device according to claim 9, characterized in that, It also includes a fourth fixing bolt, used to lock the telescopic position between the sleeve arm and the telescopic rod.