A field marking device for cost surveying

Abstract

This utility model discloses a field marking device for cost surveying, including a height-adjustable stand, an elastic compression positioning cone, and a pen adjustment rail. The elastic compression positioning cone is mounted on the bottom of the height-adjustable stand via a lower one-way bearing. The pen adjustment rail is fixedly mounted on the side of the height-adjustable stand and has a marking pen on it. A handle is mounted on the top of the height-adjustable stand via an upper one-way bearing. A one-way toothed ring is fitted and fixed on the height-adjustable stand. A one-way retaining sleeve is provided on the outer side of the one-way toothed ring. The one-way retaining sleeve includes a sleeve body, and an inner groove is provided on the inner wall of the sleeve body. A pull-in pin is inserted into the groove wall of the inner groove. The beneficial effects are: marking circles is simple and easy, the overall adjustment is flexible, and the compressible positioning structure at the bottom ensures a tight contact between the marking pen and the ground, resulting in clearer markings.

Description

Technical Field

[0001] This utility model relates to the field of cost survey marking devices, and in particular to a field marking device for cost survey. Background Technology

[0002] In the process of on-site surveying for construction project cost estimation, tools such as measuring tapes or distance measuring wheels are needed to survey the construction site. During the distance survey, the survey location and distance need to be manually marked. Some existing circle marking methods mark the survey points by drawing circles. For example, patent CN222671076U describes a point marking tool that uses a clamped marking pen to draw circles. Similar to most existing circle marking devices, it has some shortcomings, such as inconvenient adjustment of the circle size, wear and tear on the marking pen during use, and mechanical support at the center, which prevents the worn marking pen from adhering tightly to the ground, resulting in poor marking clarity. In addition, the main rod needs to be rotated by hand to draw a circle, which is difficult to operate. Utility Model Content

[0003] The purpose of this invention is to provide a field marking device for cost surveying in order to solve the above-mentioned problems.

[0004] This utility model achieves the above objectives through the following technical solutions:

[0005] A field marking device for cost surveying includes a height-adjustable stand, an elastic compression positioning cone, and a pen adjustment rail. The elastic compression positioning cone is mounted on the bottom of the height-adjustable stand via a lower one-way bearing. The pen adjustment rail is fixedly mounted on the side of the height-adjustable stand and has a marking pen on it. A handle is mounted on the top of the height-adjustable stand via an upper one-way bearing. A one-way toothed ring is fitted and fixed on the height-adjustable stand, and a one-way retaining sleeve is provided on the outer side of the one-way toothed ring.

[0006] The one-way ferrule includes a sleeve body, an inner sleeve groove on the inner sleeve wall, a pull-in post inserted into the groove wall, one end of the pull-in post extending to the outer side of the sleeve body and fitted with a pull-in cap, and the other end of the pull-in post fitted with a one-way locking head, and a pull-in spring sleeved on the pull-in post between the one-way locking head and the inner sleeve groove wall.

[0007] Furthermore, the height-adjustable stand includes a sleeve and a plug, the top end of the plug is inserted into the sleeve, the bottom outer side of the sleeve is provided with a height fixing bolt, the plug is provided with a plurality of threaded holes, and the end of the height fixing bolt is installed into any of the threaded holes.

[0008] Furthermore, the elastic compression positioning cone includes an upper column and a limiting plate. The limiting plate is fixed to the bottom of the upper column, and at least two limiting posts are inserted on the limiting plate. A lower cone is fixedly installed at the bottom of the at least two limiting posts. The bottom of the upper column is provided with a movable groove that matches the position of the at least two limiting posts. The top of the at least two limiting posts extends into the movable groove and is equipped with a stop. A bottom spring is provided between the limiting plate and the lower cone. A bottom pad is installed at the bottom of the lower cone.

[0009] Furthermore, a fixing ring is provided at the bottom of the one-way toothed ring body, and the fixing ring is fixed to the height adjustment stand by screws.

[0010] Furthermore, the side of the pen adjustment rail is provided with a side groove, and a slider is provided in the side groove. The marking pen is installed on the slider by a pen clamp. A top bar hole is provided on the top wall of the side groove, and a slider fastening bolt is provided in the top bar hole. The bottom thread of the slider fastening bolt is connected to the threaded fastening hole at the top of the slider.

[0011] Furthermore, an outer handle is installed on the outer side of the one-way sleeve.

[0012] The beneficial effects are as follows: the on-site marking device for cost surveying described in this utility model makes marking and drawing circles simple and easy, the overall adjustment is flexible, and the bottom has a compressible positioning structure that makes the marking pen touch the ground tightly, making the marking clearer. Attached Figure Description

[0013] Figure 1 This is a structural diagram of a field marking device for cost surveying as described in this utility model;

[0014] Figure 2 This is a schematic diagram of a one-way ferrule for a field marking device for cost surveying as described in this utility model;

[0015] Figure 3 This is a schematic diagram of the elastic compression positioning cone of the on-site marking device for cost surveying described in this utility model;

[0016] Figure 4 This is a structural diagram of the pen adjustment rail frame of the on-site marking device for cost surveying described in this utility model.

[0017] The annotations in the attached figures are explained as follows:

[0018] 1. Height-adjustable stand, 11. Sleeve, 12. Insert sleeve, 13. Sleeve threaded hole, 14. Height fixing bolt; 2. Elastic compression positioning bottom cone, 21. Upper half column, 22. Lower cone, 23. Limiting column, 24. Bottom spring, 25. Limiting plate, 26. Stop, 27. Movable groove, 28. Bottom pad; 3. Pen adjustment rail, 31. Side groove, 32. Slider, 33. Top bar hole, 34. Slider fastening bolt; 4. Marking pen, 41. Pen clamp; 5. One-way ferrule, 51. Sleeve body, 52. Inner side groove of the sleeve, 53. Pull-out column, 54. One-way ferrule head, 55. Pull-out cap, 56. Pull-out spring, 57. Outer handle of the sleeve; 6. One-way toothed ring body, 61. Fixing ring; 7. Handle; 8. Lower one-way bearing; 9. Upper one-way bearing. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, 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 some embodiments of this utility model, but not all embodiments.

[0020] The following is combined with Figures 1 to 4 The on-site marking device for cost surveying provided in this embodiment will be further described as follows:

[0021] Please refer to Figure 1 The present invention provides a field marking device for cost surveying, including a height-adjustable stand 1, an elastic compression positioning cone 2, and a pen adjustment rail 3. The elastic compression positioning cone 2 is installed at the bottom of the height-adjustable stand 1 via a lower one-way bearing 8, and the pen adjustment rail 3 is fixedly installed on the side of the height-adjustable stand 1.

[0022] The pen adjustment rail 3 is equipped with a marking pen 4. The top of the height adjustment stand 1 is equipped with a handle 7 via an upper one-way bearing 9. A one-way toothed ring body 7 is fitted and fixed on the height adjustment stand 1. A one-way sleeve 5 is provided on the outside of the one-way toothed ring body 7. The one-way sleeve 5 and the one-way toothed ring body 7 are locked in one direction, allowing rotation in only one direction. When rotating in the opposite direction, the locking is achieved.

[0023] Specific reference Figure 2 The one-way sleeve 5 includes a sleeve body 51. The inner wall of the sleeve body 51 is provided with an inner sleeve groove 52. A pull-out post 53 is inserted into the groove wall of the inner sleeve groove 52. One end of the pull-out post 53 extends to the outside of the sleeve body 51 and is equipped with a pull-out cap 55. The other end of the pull-out post 53 is equipped with a one-way locking head 54. A pull-out spring 56 is sleeved on the pull-out post 53 between the one-way locking head 54 and the inner groove wall of the inner sleeve groove 52.

[0024] In this embodiment, the one-way chuck 54 and the one-way toothed ring 6 achieve the effect of one-way rotation and reverse locking.

[0025] like Figure 1 - Figure 4 As shown, embodiments of this utility model also disclose the following more optimized specific structures:

[0026] Continue to refer to Figure 1 The height-adjustable support 1 includes a sleeve 11 and a plug 12. The top end of the plug 12 is inserted into the sleeve 11. A height fixing bolt 14 is provided on the bottom outer side of the sleeve 11. The plug 12 is provided with several threaded holes 13. The end of the height fixing bolt 14 is installed into any of the threaded holes 13.

[0027] Reference Figure 3 The elastic compression positioning cone 2 includes an upper column 21 and a limiting plate 25. The limiting plate 25 is fixed to the bottom of the upper column 21. At least two limiting posts 23 are inserted on the limiting plate 25. A lower cone 22 is fixedly installed at the bottom of the at least two limiting posts 23. The bottom of the upper column 21 is provided with a movable groove 27 that matches the position of the at least two limiting posts 23. The top of the at least two limiting posts 23 extends into the movable groove 27 and is equipped with a stop 26. A bottom spring 24 is provided between the limiting plate 25 and the lower cone 22. A bottom pad 28 is installed at the bottom of the lower cone 22. The elastic compression positioning cone 2 can achieve a certain length adjustment by pressing down, so that the marking pen 4 can fully touch the bottom and achieve clear marking.

[0028] The bottom of the one-way toothed ring body 6 is provided with a fixing ring 61, which is fixed to the height adjustment bracket 1 by screws.

[0029] Reference Figure 4 The side of the pen adjustment rail frame 3 is provided with a side groove 31, and a slider 32 is provided in the side groove 31. The marking pen 4 is installed on the slider 32 through the pen clamp 41. The top groove wall of the side groove 31 is provided with a top bar hole 33, and a slider fastening bolt 34 is provided in the top bar hole 33. The bottom thread of the slider fastening bolt 34 is connected to the threaded fastening hole at the top of the slider 32 to fix the slider 32.

[0030] An outer handle 57 is installed on the outside of the one-way ferrule 5.

[0031] like Figure 1 - Figure 4 The on-site marking device for cost surveying shown mainly marks the site after the survey by adding a marking pen 4. The size of the marking circle can be changed by adjusting the fixed position of the slider 32. The height-adjustable stand 1 is suitable for users of different heights. When marking the circle, the bottom of the elastic compression positioning cone is pressed onto the marking point. Then, by repeatedly swinging the outer handle 57, the one-way sleeve 5 drives the one-way toothed ring 6 to rotate, which in turn drives the height-adjustable stand 1 to easily draw the circle, making the marking easy.

[0032] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of this utility model as claimed.

Claims

1. A field marking device for cost surveying, characterized in that: The device includes a height-adjustable stand, an elastic compression positioning cone, and a pen adjustment rail. The elastic compression positioning cone is mounted on the bottom of the height-adjustable stand via a lower one-way bearing. The pen adjustment rail is fixedly mounted on the side of the height-adjustable stand and has a marking pen on it. A handle is mounted on the top of the height-adjustable stand via an upper one-way bearing. A one-way toothed ring is fitted and fixed on the height-adjustable stand, and a one-way retaining sleeve is provided on the outer side of the one-way toothed ring. The one-way ferrule includes a sleeve body, an inner sleeve groove on the inner sleeve wall, a pull-in post inserted into the groove wall, one end of the pull-in post extending to the outer side of the sleeve body and fitted with a pull-in cap, and the other end of the pull-in post fitted with a one-way locking head, and a pull-in spring sleeved on the pull-in post between the one-way locking head and the inner sleeve groove wall.

2. The on-site marking device for cost surveying according to claim 1, characterized in that: The height-adjustable stand includes a sleeve and a plug. The top end of the plug is inserted into the sleeve. A height-fixing bolt is provided on the bottom outer side of the sleeve. The plug has several threaded holes. The end of the height-fixing bolt is installed into any of the threaded holes.

3. The on-site marking device for cost surveying according to claim 1, characterized in that: The elastic compression positioning cone includes an upper column and a limiting plate. The limiting plate is fixed to the bottom of the upper column. At least two limiting posts are inserted into the limiting plate. A lower cone is fixedly installed at the bottom of the at least two limiting posts. The bottom of the upper column is provided with a movable groove that matches the position of the at least two limiting posts. The top of the at least two limiting posts extends into the movable groove and is equipped with a stop. A bottom spring is provided between the limiting plate and the lower cone. A bottom pad is installed at the bottom of the lower cone.

4. The on-site marking device for cost surveying according to claim 1, characterized in that: The bottom of the unidirectional toothed ring is provided with a fixing ring, which is fixed to the height-adjustable stand by screws.

5. The on-site marking device for cost surveying according to claim 1, characterized in that: The side of the pen adjustment rail is provided with a side groove, and a slider is provided in the side groove. The marking pen is installed on the slider by a pen clamp. A top bar hole is provided on the top wall of the side groove, and a slider fastening bolt is provided in the top bar hole. The bottom thread of the slider fastening bolt is connected to the threaded fastening hole at the top of the slider.

6. The on-site marking device for cost surveying according to claim 1, characterized in that: The outer side of the one-way ferrule is fitted with an outer handle.

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