Height gauge with movable scale marks

Abstract

The utility model discloses a height gauge with movable scale marks, which belongs to the field of measuring tools and comprises a flexible ruler belt and a support frame used for supporting the ruler belt. The measuring surface of the ruler belt is vertically arranged; the ruler belt is provided with a reference measuring line and a measuring scale mark, and the reference measuring line can be adjusted in the vertical direction. The supporting frame comprises a base and a supporting stand column. The supporting stand column is fixedly arranged above the base. According to the utility model, the intuition of height measurement in the construction process can be improved, and the measurement efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of measuring tools, in particular to a height gauge with a movable scale mark. Background Art

[0002] During construction and interior decoration, it is necessary to level the site. Construction workers typically use a spirit level and a tape measure to select a representative point on the ground to measure the level. The specific construction method is: the construction worker extends the tape measure to a certain length and holds the end of the tape measure vertically at the location to be measured. The worker then observes the intersection of the infrared light of the spirit level and the tape measure, recording this position as a reference point. The worker then places the tape measure at another location to be measured and similarly records the value at the intersection of the spirit level and the tape measure. The height difference between the two points is then subtracted from the value at the reference point. A positive result indicates that the measured location is lower than the reference point; a negative result indicates that the measured location is higher than the reference point.

[0003] In daily practice, it is found that since there are many locations that need to be measured during construction, the existing method of measuring with a tape measure is not intuitive, and the measurement sometimes causes confusion in the measurement results, which can easily lead to construction errors.

[0004] In view of this, it is necessary to provide a new technical solution to solve the above problems. Utility Model Content

[0005] In order to solve the above technical problems, the present application provides a height gauge with movable scale markings, which can improve the intuitiveness of height measurement during the construction process and effectively improve measurement efficiency.

[0006] A height gauge with movable scale markings comprises: a flexible tape and a support frame for supporting the tape; the measuring surface of the tape is arranged vertically; the tape is provided with a reference measuring line and measurement scale markings, and the reference measuring line can be adjusted in the vertical direction; the support frame comprises a base and a support column; the support column is fixedly arranged above the base.

[0007] Preferably, it also includes an adjustment mechanism for adjusting the height of the reference measuring line; the adjustment mechanism includes a winding wheel for achieving vertical displacement of the reference measuring line by winding; the winding wheel is rotationally connected to the support frame; the ruler tape is at least partially wound around the circumference of the winding wheel.

[0008] Preferably, the curling wheel includes a first curling wheel and a second curling wheel arranged parallel to each other; the first curling wheel is arranged below the second curling wheel; the first curling wheel is rotatably connected to the support column through a first rotating shaft; the second curling wheel is rotatably connected to the support column through a second rotating shaft; the ruler tape is an annular structure; the first curling wheel and the second curling wheel are arranged inside the ring formed by the ruler tape and tension the ruler tape.

[0009] Preferably, it also includes a tension adjustment mechanism for adjusting the tension of the tape.

[0010] Preferably, the support column is a rectangular tube structure with a connecting cavity inside; the lower side surface of the support column is provided with a first accommodating groove for installing the first curling wheel; the upper side surface of the support column is provided with a second accommodating groove for installing the second curling wheel; the opening of the first accommodating groove and the opening of the second accommodating groove are located on the same side of the rectangular tube structure; the first accommodating groove and the second accommodating groove are both connected through the connecting cavity.

[0011] Preferably, the lower end of the support column is fixedly connected to the base in an irremovable manner or in a detachable manner.

[0012] Preferably, the tension adjustment mechanism includes a tensioning main plate, a tensioning connecting plate and a tensioning screw; the tensioning connecting plate is provided with a tensioning connecting hole for the first rotating shaft to pass through; the tensioning connecting plate is fixed to the upper surface of the tensioning main plate; the tensioning screw is threadedly connected to the tensioning main plate and can pass through the tensioning main plate and extend out of the upper surface of the tensioning main plate; the supporting column is provided with a long slot hole for the first rotating shaft to pass through and can be adjusted vertically; the base has an installation cavity inside; the tensioning main plate and the tensioning screw are arranged in the installation cavity; the tensioning connecting plate can movably pass through the upper part of the base; the tension adjustment mechanism is configured to adjust the position of the tensioning connecting hole by adjusting the length of the tensioning screw passing through the tensioning main plate.

[0013] Preferably, a scale-changing groove communicating with the communicating cavity is further provided on the side surface of the supporting column; the lower end of the scale-changing groove is communicated with the first accommodating groove; and the upper end of the scale-changing groove is communicated with the second accommodating groove.

[0014] Preferably, the second curling wheel is fixedly connected to the second rotating shaft; and an adjusting knob is fixedly provided at the end of the second rotating shaft.

[0015] Preferably, the first curling wheel is fixedly connected to the first rotating shaft; and an adjusting knob is fixedly provided at the end of the first rotating shaft.

[0016] Preferably, the support column is a plate-shaped structure; the lower end of the support column is fixedly connected to the base in an irremovable manner or in a detachable manner.

[0017] Preferably, it further comprises a first fixing seat and a second fixing seat which are arranged on the same side of the supporting column; the first rotating axis is arranged on the first fixing seat; and the second rotating axis is arranged on the second fixing seat.

[0018] Preferably, the second curling wheel is fixedly connected to the second rotating shaft; and an adjusting knob is fixedly provided at the end of the second rotating shaft.

[0019] Preferably, the first curling wheel is fixedly connected to the first rotating shaft; and an adjusting knob is fixedly provided at the end of the first rotating shaft.

[0020] Preferably, the measuring tape is a metal steel measuring tape or a non-metallic soft measuring tape.

[0021] Preferably, the reference measurement line is a zero scale line.

[0022] Preferably, scale lines are provided above and below the reference measurement line; and the values ​​of the scale lines above and below the reference measurement line increase or decrease sequentially with the reference measurement line as the starting point.

[0023] Preferably, when the scale line above the reference measurement line is positive, the scale line below the reference measurement line is negative or positive; when the scale line above the reference measurement line is negative, the scale line below the reference measurement line is positive or negative.

[0024] Compared with the prior art, this application has at least the following beneficial effects:

[0025] 1. The utility model has a reference measuring line, which is convenient for construction workers to read, can improve the intuitiveness of height measurement during construction, and effectively improve measurement efficiency.

[0026] 2. The reference measuring line of the utility model can be adjusted in the height direction, which is convenient for alignment with the infrared ray of the level instrument during construction, thereby improving the convenience of use.

[0027] 3. The utility model can use the first winding wheel and the second winding wheel to adjust the tension of the tape, ensuring that the reading surface of the tape is vertical, thereby ensuring the accuracy of height measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Hereinafter, some specific embodiments of the present invention will be described in detail in an illustrative and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale.

[0029] In the attached figure:

[0030] Figure 1 This is a schematic diagram of the overall structure of the front of Example 1 of the present utility model;

[0031] Figure 2 This is a schematic diagram of the structure after the ruler tape is hidden in Example 1 of the present utility model;

[0032] Figure 3 for Figure 1 Cross-sectional view at the AA position;

[0033] Figure 4 This is a schematic diagram of the overall structure of the front of Example 2 of the present utility model;

[0034] Figure 5 This is a side view of the overall structure of Example 2 of the present utility model;

[0035] Figure 6 This is a schematic diagram of the overall structure of the front of Example 3 of the present utility model;

[0036] Figure 7 for Figure 6 Cross-sectional view of the middle BB position;

[0037] Figure 8 This is a schematic diagram of the front internal structure of Example 3 of the present utility model;

[0038] Figure 9 for Figure 8 A partial enlarged view of the middle C position;

[0039] Figure 10 This is a structural diagram of the tension adjustment mechanism in Example 3 of the present utility model;

[0040] Figure 11 This is a schematic diagram of the structure after the ruler tape is hidden in Example 4 of the present utility model;

[0041] Figure 12 This is a schematic diagram of the structure after the ruler tape is hidden in Example 5 of the present utility model;

[0042] Figure 13 This is a schematic diagram of the overall structure of the front of Example 6 of the present utility model;

[0043] Figure 14 This is a side structural diagram of Example 6 of the present utility model.

[0044] The above drawings include the following reference numerals:

[0045] 1. Support frame; 2. Rule tape; 3. Base; 4. Support column; 5. First accommodating slot; 6. Second accommodating slot; 7. First winding wheel; 8. Second winding wheel; 9. First rotating axis; 10. Second rotating axis; 11. Adjustment knob; 12. Connecting cavity; 13. End hole; 14. End cap; 15. End cap screw; 16. Tensioning connecting plate; 17. Column connecting plate; 18. Column connecting screw; 19. Tensioning main board; 20. Tensioning screw; 21. Tensioning connecting hole; 22. Ruler changing slot; 23. First fixing seat; 24. Second fixing seat; 25. Adjustment hole plate; 201. Ruler body; 202. Reference measuring line; 231. First support plate; 232. First fixing plate; 241. Second support plate; 242. Second fixing plate. DETAILED DESCRIPTION

[0046] To make the purpose, technical solutions, and advantages of this application more clear, the technical solutions of this application will be clearly and completely described below in conjunction with the specific embodiments of this application and the corresponding drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0047] Example 1

[0048] like Figure 1-Figure 3 As shown, a height gauge with movable scale markings comprises a flexible tape 2 and a support frame 1 for supporting the tape 2. The tape 2 includes a scale body 201, a reference measuring line 202 disposed on the surface of the scale body 201, and measurement scale markings. The measuring surface of the tape 2 is vertically arranged. The support frame 1 comprises a base 3 and a support column 4. The support column 4 is fixedly mounted above the base 3, and the lower end of the support column 4 is either permanently fixed or removably fixed to the base 3. The support column 4 and the base 3 can both be made of one of metal, plastic, and wood.

[0049] Preferably, the reference measurement line 202 is a zero scale line.

[0050] Furthermore, the reference measurement line 202 is distinguished by a special color and / or font size. For example, the reference measurement line 202 can be marked in a more conspicuous color such as red or yellow. At the same time, the font of the reference measurement line 202 is enlarged so that construction personnel can quickly find and read it.

[0051] As one embodiment of the present invention, scale lines are provided above and below reference measuring line 202 to indicate the height difference between reference measuring line 202 and the infrared light of the level, allowing construction personnel to quickly adjust the position of reference measuring line 202. The values ​​of the scale lines above and below reference measuring line 202 increase or decrease sequentially with reference measuring line 202 as the starting point.

[0052] As an embodiment of the present invention, when the scale line above the reference measurement line 202 is positive, the scale line below the reference measurement line 202 is negative or positive; when the scale line above the reference measurement line 202 is negative, the scale line below the reference measurement line 202 is positive or negative.

[0053] In this embodiment, the lower ends of the support columns 4 are fixedly connected to the base 3 by welding or bonding, or other non-detachable means. Furthermore, the base 3 and support columns 4 may also be manufactured using an integral molding process. For example, if the support columns 4 and the base 3 are made of the same metal or plastic material, they may be integrally molded using a casting or injection molding process.

[0054] As one embodiment of the present invention, a height gauge with a movable scale marking further includes an adjustment mechanism for adjusting the height of a reference measuring line 202. The adjustment mechanism includes a winding wheel that achieves vertical displacement of the reference measuring line 202 by winding; the winding wheel is rotatably connected to a support frame 1; and a tape 2 is at least partially wound around the circumference of the winding wheel.

[0055] In this embodiment, the winding wheels include a first winding wheel 7 and a second winding wheel 8 arranged parallel to each other. The first winding wheel 7 is disposed below the second winding wheel 8 and is rotationally connected to the support column 4 via a first rotating shaft 9. The second winding wheel 8 is rotationally connected to the support column 4 via a second rotating shaft 10. The tape 2 is annular in structure. The first and second winding wheels 7 and 8 are disposed within the annular structure formed by the tape 2 and tension the tape 2. The tensioning force of the first and second winding wheels 7 and 8 maintains the reading surface of the tape 2 in a vertical position. Construction personnel can adjust the height of the reference measuring line 202 on the tape 2 by pulling the tape 2.

[0056] Preferably, the tape measure 2 is a metal steel tape measure or a non-metallic soft tape measure, and the two ends of the tape measure 2 are connected by adhesive connection, pin buckle connection, spot welding or riveting.

[0057] As another embodiment of the present invention, the tape 2 can also be secured at its end to a winding wheel. After the end of the tape 2 is secured to the winding wheel, the rotation and winding action of the winding wheel tightens the tape 2. The rotation and winding action of the winding wheel also adjusts the height of the reference measuring line 202 on the tape 2.

[0058] In this embodiment, the support column 4 is a rectangular tube structure with an internal connecting cavity 12. A first receiving slot 5 is provided on the lower side of the support column 4 for mounting a first winding wheel 7. The first winding wheel 7 is positioned within the first receiving slot 5 and is rotatably connected to the support column 4 via a first rotating shaft 9. A second receiving slot 6 is provided on the upper side of the support column 4 for mounting a second winding wheel 8. The second winding wheel 8 is positioned within the second receiving slot 6 and is rotatably connected to the support column 4 via a second rotating shaft 10. The openings of the first receiving slot 5 and the second receiving slot 6 are located on the same side of the rectangular tube structure, with the opening of the first receiving slot 5 closer to the upper end of the support column 4 and the opening of the second receiving slot 6 closer to the lower end of the support column 4. This creates a vertical plane between the first and second winding wheels 7 and 8, thereby ensuring that the tape ruler 2 can be read in the vertical direction. Furthermore, the first and second receiving slots 5, 6 are connected by the connecting cavity 12, allowing the ring-shaped tape ruler 2 to pass through the interior of the support column 4, ensuring its overall rotation. The upper end of the support column 4 has an end hole 13 connected to the communication cavity 12 for installing the tape 2.

[0059] In another embodiment of the present invention, the second winding wheel 8 is fixedly connected to the second rotating shaft 10. An adjustment knob 11 is fixedly mounted at the end of the second rotating shaft 10. Rotating the adjustment knob 11 enables movement of the ring-shaped tape 2, thereby facilitating height adjustment of the reference measuring line 202 on the tape 2. The overall upward position of the second rotating shaft 10 makes it easier for construction workers to access and facilitate height adjustment of the reference measuring line 202.

[0060] Furthermore, the first winding wheel 7 is fixedly connected to the first rotating shaft 9, and an adjustment knob 11 is also fixed at the end of the first rotating shaft 9. The adjustment knobs 11 fixed at the ends of the first rotating shaft 9 and the second rotating shaft 10 enable construction workers to select and adjust the position according to the on-site working conditions.

[0061] In addition, the height of the reference measuring line 202 on the tape 2 can also be adjusted by only fixing the adjustment knob 11 at the end of the first rotating shaft 9 .

[0062] When in use, the infrared ray of the level is set to the target height, and the height ruler with movable scale mark is placed on the point to be measured. The construction personnel use the naked eye to find the reference measuring line 202 on the tape 2, and compare the reference measuring line 202 with the infrared ray of the level, and adjust the reference measuring line 202 to the height that coincides with the infrared ray of the level through manual adjustment to achieve measurement.

[0063] Example 2

[0064] Example 2 is the same as Example 1, except that:

[0065] like Figure 4-5 As shown, a height ruler with movable scale markings also includes a tension adjustment mechanism for adjusting the tension of the tape 2. The tension adjustment mechanism includes two adjustment holes 25, each having a vertically arranged long slot. The adjustment holes 25 are connected by bolts or screws extending through the long slots. The support column 4 is provided with a long slot for adjusting the position of the second rotating shaft 10 in the vertical direction. The second rotating shaft 10 extends through the long slot and is rotatably connected to the adjustment hole 25, so that the second rotating shaft 10 can change its vertical position as the adjustment hole 25 is adjusted. By adjusting the position of the second rotating shaft 10, the distance between the first winding wheel 7 and the second winding wheel 8 can be adjusted, thereby adjusting the tension of the tape 2.

[0066] Example 3

[0067] Example 3 is the same as Example 1, except that:

[0068] like Figure 5-10 As shown, a height gauge with movable scale markings also includes a tension adjustment mechanism for adjusting the tension of the tape 2. The tension adjustment mechanism includes a tensioning main plate 19, a tensioning connecting plate 16, and a tensioning screw 20. The tensioning connecting plate 16 is provided with a tensioning connection hole 21 for the first rotating shaft 9 to pass through. The first rotating shaft 9 is disposed in the tensioning connection hole 21. The tensioning connecting plate 16 is fixed to the upper surface of the tensioning main plate 19. The tensioning screw 20 is threadedly connected to the tensioning main plate 19 and can penetrate the tensioning main plate 19 and extend out of the upper surface of the tensioning main plate 19.

[0069] The support column 4 is provided with a long slotted hole for the first rotating shaft 9 to pass through and to enable vertical adjustment, providing sufficient space for vertical adjustment of the first rotating shaft 9. The base 3 has an internal mounting cavity, in which a tensioning main plate 19 and a tensioning screw 20 are disposed. The bottom end of the tensioning connecting plate 16 is disposed within the mounting cavity and fixedly connected to the tensioning main plate 19. The tensioning connecting plate 16 extends through the upper portion of the base 3 and is movably connected to the base 3. The tension adjustment mechanism is configured to adjust the position of the tensioning connecting plate 16 by adjusting the length of the tensioning screw 20 extending from the tensioning main plate 19, thereby adjusting the position of the tensioning connecting hole 21, thereby adjusting the vertical position of the first rotating shaft 9 and the first winding wheel 7, thereby adjusting the tension of the first winding wheel 7 and the second winding wheel 8 on the tape 2.

[0070] As another embodiment of the present invention, a column connecting plate 17 is fixedly provided on the upper surface of the base 3 , and the lower end of the supporting column 4 is detachably fixedly connected to the column connecting plate 17 via a column connecting plate 18 .

[0071] In another embodiment of the present invention, magnets are fixed to the upper surface of the base 3 and / or the lower end surface of the support column 4, and the support column 4 and the base 3 are removably fixedly connected by the magnetic force of the magnets. When the base 3 or the support column 4 is made of iron material, the magnets fixed to the upper surface of the base 3 or the lower end surface of the support column 4 can achieve a removable fixed connection between the two.

[0072] As another embodiment of the present invention, the end hole 13 at the upper end of the support column 4 is covered with an end cap 14, which is detachably fixed to the support column 4 by an end cap screw 15. The provision of the end cap 14 can effectively prevent dust and debris from entering the communication cavity 12 during the construction process.

[0073] Example 4

[0074] Example 4 is the same as Example 3, except that:

[0075] like Figure 11 As shown, the support column 4 is also provided with a scale-changing slot 22 on its side, which communicates with the connecting cavity 12. The slot 22 is located on the side for reading the reference measuring line 202. Its width is smaller than the width of the ruler body 201, but greater than its thickness. The lower end of the slot 22 communicates with the first receiving slot 5, and the upper end communicates with the second receiving slot 6. A height gauge with a movable scale mark and a slot 22 allows for more convenient replacement of the ring-shaped scale tape 2.

[0076] Example 5

[0077] Example 5 is the same as Example 4, except that:

[0078] like Figure 12 As shown, the width of the scale-changing groove 22 is greater than the width of the ruler body 201. In this embodiment, the width of the scale-changing groove 22 is equal to the width of the side of the rectangular tube support column 4. In other words, the rectangular tube wall closest to the reading surface of the tape 2 is completely continuous, serving as the scale-changing groove 22. A scale-changing groove 22 that is greater than the width of the ruler body 201 provides greater convenience when replacing the tape 2.

[0079] Example 6

[0080] Example 6 is the same as Example 1. The only difference is that:

[0081] like Figure 13 and Figure 14 As shown, the support column 4 and the base 3 are both plate-shaped structures, and the lower end of the support column 4 is non-detachably fixedly connected to the base 3. When fixing, welding or bonding can be used.

[0082] At this time, a height ruler with movable scale markings also includes a first fixed seat 23 and a second fixed seat 24 arranged on the same side of the support column 4. The first fixed seat 23 includes a first fixed plate 232 and a first support plate 231 arranged perpendicular to the first fixed plate 232. The first support plate 231 is provided with a through hole for the first rotating shaft 9 to pass through, and the first rotating shaft 9 is inserted into the through hole. The second fixed seat 24 includes a second fixed plate 242 and a second support plate 241 arranged perpendicular to the second fixed plate 242. The second support plate 241 is provided with a through hole for the second rotating shaft 10 to pass through, and the second rotating shaft 10 is inserted into the through hole. The first winding wheel 7 is rotatably connected to the first fixed seat 23 via the first rotating shaft 9, and the second winding wheel 8 is rotatably connected to the second fixed seat 24 via the second rotating shaft 10.

[0083] In this embodiment, the second winding wheel 8 is fixedly connected to the second rotating shaft 10. An adjustment knob 11 is fixedly mounted at the end of the second rotating shaft 10. Rotating the adjustment knob 11 enables the movement of the ring-shaped tape 2, thereby facilitating the height adjustment of the reference measuring line 202 on the tape 2. The overall position of the second rotating shaft 10 is relatively high, making it easier for construction workers to access and adjust the height of the reference measuring line 202.

[0084] Furthermore, the first winding wheel 7 is fixedly connected to the first rotating shaft 9, and an adjustment knob 11 is also fixed at the end of the first rotating shaft 9. The adjustment knobs 11 fixed at the ends of the first rotating shaft 9 and the second rotating shaft 10 enable construction workers to select and adjust the position according to the on-site working conditions.

[0085] As another embodiment of the present invention, the first fixing plate 232 has a vertically disposed elongated slotted hole. The first fixing plate 232 is detachably fixed to the support column 4 via a bolt extending through the elongated slotted hole. The elongated slotted hole allows the first fixing plate 232 to be adjusted in the vertical direction, thereby adjusting the vertical position of the first winding wheel 7 rotatably mounted on the first fixing seat 23, and thereby adjusting the tension of the tape 2.

[0086] As another embodiment of the present invention, the second fixing plate 242 has a vertically disposed elongated slotted hole. The second fixing plate 242 is detachably fixed to the support column 4 via a bolt extending through the elongated slotted hole. The second fixing plate 242 can be adjusted vertically by the elongated slotted hole, thereby adjusting the vertical position of the second winding wheel 8 rotatably mounted on the second fixing seat 24, thereby adjusting the tension of the tape 2.

[0087] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0088] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0089] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0090] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A height gauge with movable scale markings, characterized in that: include: A flexible tape ruler and a support frame for supporting the tape ruler; the measuring surface of the tape ruler is arranged vertically; the tape ruler is provided with a reference measuring line and a measuring scale mark, and the reference measuring line can be adjusted in the vertical direction; the support frame includes a base and a support column; the support column is fixed above the base.

2. The height gauge with movable scale markings according to claim 1, characterized in that: It also includes an adjustment mechanism for adjusting the height of the reference measuring line; the adjustment mechanism includes a winding wheel for achieving vertical displacement of the reference measuring line by winding; the winding wheel is rotationally connected to the support frame; the ruler tape is at least partially wound around the circumference of the winding wheel.

3. The height gauge with movable scale markings according to claim 2, characterized in that: The curling wheel includes a first curling wheel and a second curling wheel arranged parallel to each other; the first curling wheel is arranged below the second curling wheel; the first curling wheel is rotatably connected to the support column through a first rotating shaft; the second curling wheel is rotatably connected to the support column through a second rotating shaft; the ruler tape is a ring structure; the first curling wheel and the second curling wheel are arranged inside the ring formed by the ruler tape and tension the ruler tape.

4. The height gauge with movable scale markings according to claim 3, characterized in that: It also includes a tension adjustment mechanism for adjusting the tension of the tape.

5. The height gauge with movable scale markings according to claim 4, characterized in that: The support column is a rectangular tube structure with a connecting cavity inside; the lower side of the support column is provided with a first accommodating groove for installing the first curling wheel; the upper side of the support column is provided with a second accommodating groove for installing the second curling wheel; the opening of the first accommodating groove and the opening of the second accommodating groove are located on the same side of the rectangular tube structure; the first accommodating groove and the second accommodating groove are both connected through the connecting cavity.

6. The height gauge with movable scale markings according to claim 5, characterized in that: The lower end of the support column is fixedly connected to the base in an irremovable manner or in a detachable manner.

7. A height gauge with movable scale markings according to any one of claims 4 to 6, characterized in that: The tension adjustment mechanism includes a tensioning main plate, a tensioning connecting plate and a tensioning screw; the tensioning connecting plate is provided with a tensioning connecting hole for the first rotating shaft to pass through; the tensioning connecting plate is fixedly mounted on the upper surface of the tensioning main plate; the tensioning screw is threadedly connected to the tensioning main plate and can pass through the tensioning main plate and extend out of the upper surface of the tensioning main plate; the supporting column is provided with a long slot hole for the first rotating shaft to pass through and can be vertically adjusted; the base has an installation cavity inside; the tensioning main plate and the tensioning screw are arranged in the installation cavity; the tensioning connecting plate can movably pass through the upper part of the base; The tension adjustment mechanism is configured to adjust the position of the tension connection hole by adjusting the length of the tension screw passing through the tension main plate.

8. The height gauge with movable scale markings according to claim 5, characterized in that: The side surface of the support column is further provided with a scale-changing groove connected to the communicating cavity; the lower end of the scale-changing groove is connected to the first accommodating groove; the upper end of the scale-changing groove is connected to the second accommodating groove.

9. The height gauge with movable scale markings according to claim 5, characterized in that: The second winding wheel is fixedly connected to the second rotating shaft; and an adjusting knob is fixedly provided at the end of the second rotating shaft.

10. The height gauge with movable scale markings according to claim 5 or 9, characterized in that: The first curling wheel is fixedly connected to the first rotating shaft; and an adjusting knob is fixedly provided at the end of the first rotating shaft.

11. The height gauge with movable scale markings according to claim 4, characterized in that: The support column is a plate-shaped structure; the lower end of the support column is fixedly connected to the base in an irremovable manner or in a detachable manner.

12. The height gauge with movable scale markings according to claim 11, wherein: It also includes a first fixing seat and a second fixing seat arranged on the same side of the support column; the first rotating shaft is arranged on the first fixing seat; and the second rotating shaft is arranged on the second fixing seat.

13. The height gauge with movable scale markings according to claim 12, wherein: The second winding wheel is fixedly connected to the second rotating shaft; and an adjusting knob is fixedly provided at the end of the second rotating shaft.

14. The height gauge with movable scale markings according to claim 13, wherein: The first curling wheel is fixedly connected to the first rotating shaft; and an adjusting knob is fixedly provided at the end of the first rotating shaft.

15. The height gauge with movable scale markings according to claim 1, characterized in that: The measuring tape is a metal steel measuring tape or a non-metallic soft measuring tape.

16. The height gauge with movable scale markings according to claim 1, wherein: The reference measurement line is the zero scale line.

17. The height gauge with movable scale markings according to claim 1, wherein: Scale lines are provided above and below the reference measurement line; the values ​​of the scale lines above and below the reference measurement line increase or decrease sequentially with the reference measurement line as the starting point.

18. The height gauge with movable scale markings according to claim 17, wherein: When the scale line above the reference measurement line is positive, the scale line below the reference measurement line is negative or positive; when the scale line above the reference measurement line is negative, the scale line below the reference measurement line is positive or negative.

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