Pay-off device for engineering surveying and mapping

Abstract

The utility model provides a pay-off device for engineering surveying and mapping. The pay-off device comprises a mounting frame, a winding mechanism and an adjusting mechanism. The winding mechanism comprises a winding roller which is rotationally connected to the mounting frame and is used for winding a measuring line; the adjusting mechanism comprises an adjusting roller which is rotationally connected to the mounting frame, a cavity is formed in the adjusting roller, a through groove and a round hole which are communicated with the cavity are formed in the cylindrical surface of the adjusting roller, the through groove extends by a preset angle in the circumferential direction of the adjusting roller, and the round hole is located in the axial side of the through groove; the through groove and the round hole are arranged to enable a measuring line on the winding roller to penetrate into the cavity through the through groove and then penetrate out of the round hole through the cavity. The adjusting mechanism further comprises a driving assembly which is arranged on the mounting frame and can drive the adjusting roller to rotate and lock the rotating position of the adjusting roller. According to the device, through the adjusting roller and the through grooves and the round holes which are formed in the adjusting roller in a staggered mode, the acting force on the measuring line between the adjusting roller and the winding roller can be reduced while the released measuring line is tightened, and the section of the measuring line is prevented from being broken.

Description

Technical Field

[0001] This utility model relates to the field of engineering surveying and mapping technology, specifically to a line-laying device for engineering surveying and mapping. Background Technology

[0002] Engineering surveying encompasses various surveying tasks conducted during the surveying, design, construction, and management phases of engineering projects. It directly serves a series of engineering procedures, including surveying, design, construction, and installation. In engineering construction, various surveying tasks typically require the use of line-laying devices. Traditional line-laying devices rely on a person to stop the rotation of the winding roller and tighten the measuring line. This requires continuous movement during the surveying process, which can lead to fatigue, and also necessitates the cooperation of other personnel to complete the surveying work.

[0003] Existing patent CN220165512U discloses a line-laying device for engineering surveying and mapping. It uses a locking gear on the line hub and a locking toothed plate slidingly mounted on a support plate. A fixed spring engages the locking toothed plate with the locking gear to lock the line hub, preventing free rotation and reducing the burden and fatigue of continuous manual locking. Furthermore, only one person is needed to operate the device. Additionally, a line-laying adjustment mechanism allows adjustment of the sliding roller's position by rotating an adjustment knob, ensuring the measuring line remains taut at all times.

[0004] However, in the aforementioned patent, although the measuring line can be pressed by moving the sliding roller downwards, the measuring line between the sliding roller and the wire hub will also be subjected to force during the pressing process. When the force is not well controlled, the measuring line is prone to breakage and needs to be re-leaded, which is very troublesome and inconvenient. Utility Model Content

[0005] To address the technical problems existing in the background art, this utility model provides a line-laying device for engineering surveying and mapping.

[0006] The technical solution of this utility model is as follows:

[0007] A surveying and mapping device for laying out lines includes a mounting frame, a winding mechanism, and an adjustment mechanism;

[0008] The winding mechanism includes a winding roller, which is rotatably connected to the mounting frame for winding the measuring wire;

[0009] The adjustment mechanism includes an adjustment roller, which is rotatably connected to the mounting frame and has an internal cavity. The cylindrical surface of the adjustment roller has a through groove and a round hole that communicate with the cavity. The through groove extends at a preset angle along the circumference of the adjustment roller, and the round hole is located on one side of the through groove in the axial direction.

[0010] The through slot and the round hole are designed to allow the measuring wire on the winding roller to first pass through the through slot into the cavity, and then pass through the cavity and out through the round hole.

[0011] The adjustment mechanism also includes a drive assembly, which is mounted on the mounting frame and configured to drive the adjustment roller to rotate and lock the rotation position of the adjustment roller.

[0012] After the wire is laid out, the adjusting roller is rotated to wind and tighten the wire through the circular hole, which helps to achieve the tensioning of the wire.

[0013] When the adjusting roller rotates, the measuring wire between the adjusting roller and the winding roller slides in the through groove, which reduces the tension of the measuring wire in the circular hole and avoids excessive force that could cause the measuring wire to break.

[0014] Preferably, the through groove is a linear groove extending circumferentially along the adjusting roller, with a corresponding central angle of 180° to 270°.

[0015] Preferably, the circular hole, the rotation axis of the adjusting roller, and one end of the through groove are located in the same plane, and the end of the through groove is misaligned with the circular hole and located on both sides of the rotation axis of the adjusting roller.

[0016] In some embodiments, the drive assembly includes a gear fixed to the adjusting roller shaft and a rack slidably connected to the mounting bracket, the rack meshing with the gear.

[0017] Furthermore, a lead screw is rotatably connected to the mounting bracket, the axis of the lead screw is parallel to the sliding direction of the rack, and a movable block is fixed on the rack, the movable block being threadedly engaged with the lead screw.

[0018] In some embodiments, a limiting roller is rotatably connected to the mounting bracket. The limiting roller is located radially outside the adjusting roller and parallel to the adjusting roller. The middle part of the limiting roller corresponds to the circular hole in the radial direction of the adjusting roller and is configured to abut against the measuring line passing through the circular hole.

[0019] In the above embodiments, multiple round beads are evenly embedded on the inner side of the through groove and the inner side of the round hole, and the round beads are rotatable.

[0020] In some embodiments, the mounting bracket is provided with a fixing block at the position of the shaft of the winding roller, and a threaded rod is threadedly connected to the fixing block. The threaded rod extends radially along the winding roller, and a friction block is provided at one end near the shaft of the winding roller. The friction block can abut against the shaft of the winding roller.

[0021] Preferably, the friction block is an arc-shaped plate, coaxial with the winding roller, and rotatably connected to one end of the threaded rod. A slider extends along one axial side of the friction block, and the mounting bracket is provided with a sliding groove that slides with the slider. The sliding groove extends radially along the winding roller.

[0022] In some embodiments, a handwheel is provided at one end of the winding roller shaft.

[0023] This utility model provides a line-laying device for engineering surveying and mapping. By using a staggered through groove and a circular hole, the measuring line is limited. After the line is laid out, the adjusting roller is rotated, and the round hole causes the laid-out measuring line to be wound and tightened, which can realize the tensioning operation of the measuring line. While the adjusting roller is rotating, the measuring line between the adjusting roller and the winding roller slides in the through groove relative to the through groove along the extension direction of the through groove, which reduces the tension force of the round hole on the measuring line and avoids the application of excessive force that could cause the measuring line to break. Attached Figure Description

[0024] In the attached diagram:

[0025] Figure 1 This is a schematic diagram of the wire feeding device of this utility model;

[0026] Figure 2 This is a partial cross-sectional schematic diagram of the adjustment mechanism;

[0027] Figure 3 This is a partial cross-sectional view of the adjusting roller;

[0028] Figure 4 for Figure 2 Enlarged diagram of section A in the middle;

[0029] Figure 5 This is a partial cross-sectional view of one end of the winding roller.

[0030] The components represented by the various reference numerals in the diagram are:

[0031] 100. Mounting bracket; 200. Winding mechanism; 210. Winding roller; 220. Locking assembly; 221. Threaded rod; 222. Friction block; 223. Fixing block; 230. Handwheel; 300. Adjusting mechanism; 310. Adjusting roller; 311. Through slot; 312. Round hole; 313. Ball; 320. Drive assembly; 321. Gear; 322. Rack; 323. Lead screw; 324. Moving block; 330. Mounting plate; 340. Limiting roller. Detailed Implementation

[0032] like Figures 1-5 As shown, this utility model embodiment provides a line-laying device for engineering surveying and mapping, including a mounting frame 100, a winding mechanism 200, and an adjustment mechanism 300;

[0033] The winding mechanism 200 includes a winding roller 210, which is rotatably connected to the mounting frame 100 for winding the measuring wire;

[0034] The adjustment mechanism 300 includes an adjustment roller 310, which is rotatably connected to the mounting frame 100 and has an internal cavity. The cylindrical surface of the adjustment roller 310 is provided with a through groove 311 and a round hole 312 that communicate with the cavity. The through groove 311 extends at a preset angle along the circumference of the adjustment roller 310, and the round hole 312 is located on one side of the through groove 311 in the axial direction.

[0035] The through slot 311 and the round hole 312 are configured to allow the measuring wire on the winding roller 210 to first pass through the through slot 311 into the cavity, and then pass through the cavity out through the round hole 312.

[0036] The adjustment mechanism 300 also includes a drive assembly 320, which is mounted on the mounting frame 100 and configured to drive the adjustment roller 310 to rotate and lock the rotation position of the adjustment roller 310.

[0037] After the wire is laid out, the adjusting roller 310 is rotated to wind and tighten the wire under the action of the circular hole 312, which helps to achieve the tightening of the wire.

[0038] When the adjusting roller 310 rotates, the measuring line between the adjusting roller 310 and the winding roller 210 slides in the through groove 311, which reduces the tension of the measuring line by the circular hole 312 and avoids the excessive force that could cause the measuring line to break.

[0039] The technical solution of this application will be described in detail below with reference to specific embodiments and accompanying drawings:

[0040] like Figure 1 As shown, in this embodiment, the mounting frame 100 specifically includes a base, and the top of the base is provided with two first upright plates for mounting the winding mechanism 200 and two second upright plates for mounting the adjustment mechanism 300.

[0041] The winding roller 210 is located between the two first vertical plates, and its two ends are rotatably connected to the two first vertical plates. The adjusting roller 310 and the winding roller 210 are located between the two second vertical plates, and their two ends are rotatably connected to the two second vertical plates.

[0042] In this embodiment, the shafts of the winding roller 210 and the adjusting roller 310 extend horizontally to the left and right, and the two are arranged horizontally side by side, with the adjusting roller 310 located in front of the winding roller 210.

[0043] Combined Figure 2 and Figure 3 As shown, the regulating roller 310 has a barrel-shaped cavity structure, and the through groove 311 is a linear slot that extends circumferentially along the regulating roller 310 and connects to the internal cavity of the regulating roller 310.

[0044] The through groove 311 is preferably located in the middle of the adjusting roller 310, and during the wire feeding, one end of the through groove 311 is located at the rear side of the adjusting roller 310, that is, at the rear quadrant point of the circular cross-section of the winding roller 210. The measuring wire passes into the adjusting roller 310 from this end, thereby allowing the measuring wire to have the maximum sliding distance in the through groove 311.

[0045] The circular hole 312 is located at the foremost position of the adjusting roller 310, that is, at the front quadrant point of the circular cross-section of the winding roller 210. The circular hole 312 is located on the right side of the through groove 311 and is laterally offset from the through groove 311 so that the circular hole 312 can apply force to the measuring line.

[0046] The circular hole 312, the rotation axis of the adjusting roller 310, and the end of the through groove 311 located at the rear of the adjusting roller 310 are all in the same plane. The ends of the circular hole 312 and the through groove 311 located at the rear of the adjusting roller 310 are offset and correspond to each other in the plane, and are located on both sides of the rotation axis of the adjusting roller 310. In this way, during the wire feeding, the length of the measuring wire located in the adjusting roller 310 can be maximized. When the adjusting roller 310 is rotated to tighten the fed measuring wire, the actual length of the measuring wire located in the adjusting roller 310 becomes shorter because the measuring wire slides in the through groove 311. This reduces the force exerted by the circular hole 312 on the measuring wire between the adjusting roller 310 and the winding roller 210, thus preventing the measuring wire from breaking.

[0047] In this embodiment, the through groove 311 extends forward from the upper side of the adjusting roller 310, starting from the end located at the rearmost position of the adjusting roller 310. The central angle corresponding to the extension length of the through groove 311 is 180° to 270°, preferably 270°, so that when the adjusting roller 310 is rotated to tighten the released measuring line, sufficient range of motion is provided for the sliding of the measuring line in the through groove 311. That is, the adjusting roller 310 can rotate up to a maximum angle of 270° to tighten the released measuring line without applying excessive force to the measuring line between the adjusting roller 310 and the winding roller 210.

[0048] In addition, in order to reduce the friction and wear of the measuring line sliding in the through groove 311 and the round hole 312, a number of round beads 313 are evenly embedded on the inner side of the through groove 311 and the inner side of the round hole 312. The round beads 313 are evenly distributed along the extension direction of the inner side of the through groove 311 and the round hole 312 and can rotate.

[0049] like Figure 4 As shown, the drive assembly 320 is mounted on a second vertical plate and includes a gear 321 fixed on the rotating shaft of the adjusting roller 310 and a rack 322 slidably connected to the second vertical plate. The rack 322 meshes with the gear 321, and the adjusting roller 310 is driven to rotate and positioned by sliding the rack 322.

[0050] Specifically, the rotating shaft at the left end of the adjusting roller 310 extends out of the second vertical plate. The gear 321 is fixed to the extended end of the rotating shaft. The extending direction of the rack 322 is perpendicular to the rotating shaft of the adjusting roller 310 and is located on the outer side of the second vertical plate on the left. A first slider extends from the side of the rack 322 near the second vertical plate. A first groove corresponding to the first slider is provided on the second vertical plate, and the extending direction of the first groove is the same as the extending direction of the rack 322. Through the cooperation of the first slider and the first groove, the rack 322 is slidably connected to the second vertical plate.

[0051] The drive assembly 320 also includes a lead screw 323, which is rotatably connected to the second vertical plate. The axial direction of the lead screw 323 is parallel to the sliding direction of the rack 322. A moving block 324 is fixed on the rack 322, and the moving block 324 is threadedly engaged with the lead screw 323.

[0052] Specifically, a connecting part protrudes from the outer side of the second vertical plate, and the lower end of the lead screw 323 is rotatably connected to the connecting part and rotates around its own axis. A moving block 324 protrudes from the side of the rack 322 away from the gear 321. The moving block 324 is provided with a threaded hole that mates with the lead screw 323. Through the threaded engagement between the moving block 324 and the lead screw 323, rotating the lead screw 323 can drive the rack 322 to slide. This not only plays a fine-tuning role in the sliding of the rack 322, thereby fine-tuning the rotation angle of the adjusting roller 310, avoiding the situation where the adjustment roller 310 rotates too much at an instant due to errors, but also helps to lock the adjusting roller 310.

[0053] For example Figure 2 As shown, a limiting roller 340 is rotatably connected to the mounting frame 100. Specifically, a mounting plate 330 is fixed on the second vertical plate on the right side (i.e., the second vertical plate near the circular hole 312). The mounting plate 330 is perpendicular to the rotating shaft of the adjusting roller 310 and extends to the front of the adjusting roller 310. One end of the limiting roller 340 is rotatably connected to the extended end of the mounting plate 330, and the other end extends to the left.

[0054] The limiting roller 340 is located radially outside the adjusting roller 310 and is parallel to the adjusting roller 310. The middle part of the limiting roller 340 corresponds to the circular hole 312 in the radial direction of the adjusting roller 310 and is configured to abut against the measuring line passing through the circular hole 312.

[0055] In this embodiment, since the through groove 311 extends forward from the upper part of the adjusting roller 310 from the rear side of the adjusting roller 310, the measuring line passing through the circular hole 312 abuts against the lower side of the limiting roller 340. When it is necessary to tighten the released measuring line, the adjusting roller 310 is rotated counterclockwise (that is, the circular hole 312 is turned upward). At this time, the limiting roller 340 applies a force to the released measuring line, which not only helps to tighten the measuring line, but also restricts the position of the tightened measuring line.

[0056] For example Figure 5 As shown, in this embodiment, the winding mechanism 200 is also provided with a locking component 220 corresponding to the winding roller 210, which is used to lock the rotation of the winding roller 210 to facilitate the rapid tightening of the measuring wire. However, it should be understood that in some embodiments, the locking component 220 is not provided, and the technical solution of this application is also complete and can meet the basic requirements of implementation, only the tightening efficiency is slightly lower and the rotation angle of the adjusting roller 310 is slightly larger. When tightening the measuring wire, in the initial stage, since the winding roller 210 is in a free state, the measuring wire in the circular hole 312 may slip. However, as the rotation angle of the adjusting roller 310 increases, the released measuring wire will wrap around the outer surface of the adjusting roller 310. Through the friction between the two, the slippage of the measuring wire can be stopped, thereby achieving the tightening of the measuring wire.

[0057] In this embodiment, the locking component 220 is installed on the mounting bracket 100 at the position corresponding to the shaft of the winding roller 210, specifically on the first vertical plate on the left side. It includes a threaded rod 221 connected to the first vertical plate and a friction block 222 connected to one end of the threaded rod 221.

[0058] More specifically, a fixing block 223 protrudes outward from the outer side of the first upright plate. The fixing block 223 is provided with a threaded hole. A threaded rod 221 is connected to the fixing block 223 by threading into the threaded hole. The threaded rod 221 extends radially along the winding roller 210. A friction block 222 is connected to the end of the threaded rod 221 near the shaft of the winding roller 210. The shaft at the left end of the winding roller 210 protrudes out of the first upright plate by a certain length. When the threaded rod 221 is screwed in, the friction block 222 gradually approaches and presses against the protruding part of the shaft at the left end of the winding roller 210, thereby locking the winding roller 210 by friction and preventing it from rotating.

[0059] Furthermore, the friction block 222 can be an arc-shaped plate, coaxial with the winding roller 210. The friction block 222 is rotatably connected to the end of the threaded rod 221. A second slider protrudes from the side of the friction block 222 that is close to the first vertical plate. The first vertical plate is provided with a second sliding groove that slides with the second slider. The second sliding groove extends radially along the winding roller 210, which guides the radial sliding of the friction block 222 and restricts the friction block 222 from rotating.

[0060] The arc-shaped friction block 222 can increase the contact area with the shaft of the winding roller 210, increase the friction force, and thus enhance the locking effect.

[0061] In addition, such as Figure 5 As shown, in this embodiment, a handwheel 230 is provided on the extended end of the shaft at the left end of the winding roller 210. The winding roller 210 is rotated by the handwheel 230 to manually wind up the measuring wire. Of course, in some other embodiments, the winding roller 210 can also be rotated electrically.

[0062] In this embodiment, both the lead screw 323 and the threaded rod 221 can be knurled hand-tightening bolts, and both are vertically arranged with the tightening part at the top.

[0063] In this embodiment, the wire feeding device is used by placing one end of the measuring wire in a designated position and fixing it. After fixing, the operator rotates the handwheel 230 to drive the winding roller 210 to rotate and perform the wire feeding operation. At the same time as feeding, the mounting frame 100 is moved. When the mounting frame 100 reaches the designated position, the threaded rod 221 is rotated to push the friction block 222 downward to press against the surface of the rotating shaft of the winding roller 210, thereby completing the fixing of the winding roller 210. After this operation is completed, the lead screw 323 of the driving adjustment mechanism 300 is rotated. When in motion, the moving block 324 drives the rack 322 to move downward. At this time, the interaction between the rack 322 and the gear 321 drives the adjusting roller 310 to rotate counterclockwise. During the rotation of the adjusting roller 310, the circular hole 312 of the adjusting roller 310 will wind and tighten the measuring line in the wire feeding direction. At the same time, the measuring line close to the winding roller 210 will move along the path of the through groove 311 in the through groove 311. When the measuring line in the wire feeding direction is in a taut state, the rotation of the lead screw 323 can be stopped. At this time, the wire feeding and tensioning operations of measurement and mapping are completed.

[0064] When retracting the line, reset the lead screw 323 and threaded rod 221, and turn the handwheel 230.

[0065] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A surveying and mapping device for laying out lines, characterized in that, It includes a mounting bracket (100), a winding mechanism (200), and an adjustment mechanism (300); The winding mechanism (200) includes a winding roller (210) rotatably connected to the mounting frame (100) for winding the measuring wire; The adjustment mechanism (300) includes an adjustment roller (310), which is rotatably connected to the mounting frame (100) and has an internal cavity. The cylindrical surface of the adjustment roller (310) is provided with a through groove (311) and a round hole (312) that communicate with the cavity. The through groove (311) extends at a preset angle along the circumference of the adjustment roller (310), and the round hole (312) is located on one side of the through groove (311) in the axial direction. The through slot (311) and the round hole (312) are configured to allow the measuring wire on the winding roller (210) to first pass through the through slot (311) into the cavity, and then pass through the cavity out through the round hole (312); The adjustment mechanism (300) further includes a drive assembly (320) disposed on the mounting frame (100) and configured to drive the adjustment roller (310) to rotate and lock the rotation position of the adjustment roller (310).

2. The surveying and mapping device for engineering surveying as described in claim 1, characterized in that, The through groove (311) is a linear groove extending circumferentially along the adjusting roller (310), and its corresponding central angle is 180° to 270°.

3. The surveying and mapping device for engineering surveying as described in claim 2, characterized in that, The rotation axis of the circular hole (312), the adjusting roller (310), and one end of the through groove (311) are located in the same plane. The end of the through groove (311) is misaligned with the circular hole (312) and is located on both sides of the rotation axis of the adjusting roller (310).

4. The surveying and mapping device for engineering surveying as described in claim 1, characterized in that, The drive assembly (320) includes a gear (321) fixed on the shaft of the adjusting roller (310) and a rack (322) slidably connected to the mounting frame (100), the rack (322) meshing with the gear (321).

5. The surveying and mapping device for engineering surveying as described in claim 4, characterized in that, A lead screw (323) is rotatably connected to the mounting bracket (100). The axial direction of the lead screw (323) is parallel to the sliding direction of the rack (322). A moving block (324) is fixed on the rack (322), and the moving block (324) is threadedly engaged with the lead screw (323).

6. The surveying and mapping device for engineering surveying as described in claim 1, characterized in that, A limiting roller (340) is rotatably connected to the mounting bracket (100). The limiting roller (340) is located radially outside the adjusting roller (310) and parallel to the adjusting roller (310). The middle part of the limiting roller (340) corresponds to the circular hole (312) in the radial direction of the adjusting roller (310) and is configured to abut against the measuring line passing through the circular hole (312).

7. A surveying and mapping layout device as described in any one of claims 1-6, characterized in that, Multiple round beads (313) are evenly embedded on the inner side of the through groove (311) and the inner side of the round hole (312), and the round beads (313) can rotate.

8. The surveying and mapping device for engineering surveying as described in claim 1, characterized in that, The mounting bracket (100) is provided with a fixing block (223) at the position of the rotating shaft of the winding roller (210). A threaded rod (221) is threadedly connected to the fixing block (223). The threaded rod (221) extends radially along the winding roller (210) and a friction block (222) is provided at one end near the rotating shaft of the winding roller (210). The friction block (222) can abut against the rotating shaft of the winding roller (210).

9. The surveying and mapping device for engineering surveying as described in claim 8, characterized in that, The friction block (222) is an arc-shaped plate and is coaxial with the winding roller (210). The friction block (222) is rotatably connected to one end of the threaded rod (221), and a slider extends on one side of its axial direction. The mounting bracket (100) is provided with a sliding groove that slides with the slider, and the sliding groove extends radially along the winding roller (210).

10. The surveying and mapping device for engineering surveying as described in claim 1, characterized in that, A handwheel (230) is provided at one end of the shaft of the winding roller (210).

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