Convenient-to-adjust measuring scale for engineering supervision
By setting length and angle measuring structures on the measuring ruler used in engineering supervision, the problems of visual error and insufficient angle judgment of traditional measuring rulers are solved, and the effects of precise measurement and accurate angle judgment are achieved.
Patent Information
- Application Number
- CN202422905141.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-11-27
AI Technical Summary
Traditional measuring rulers used in engineering supervision suffer from visual errors and cannot accurately determine building angles during measurement.
An easily adjustable measuring ruler for engineering supervision has been designed, comprising a length measuring ruler and an angle measuring ruler. By setting a rectangular groove, an extension scale, a limit slider, a fixed slide rail, an anti-slip slide, a rotating horizontal axis, an adjustment knob, and a locking knob on the main body of the measuring ruler, precise measurement of length and angle can be achieved.
It enables the measuring ruler to closely adhere to the surface of objects for precise length measurement and accurately determine building angles, reducing visual errors and meeting the multifunctional measurement needs of construction sites.
Smart Images
Figure CN223470597U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the engineering supervision related technical field, concretely is a kind of engineering supervision is used to measure scale of easy adjustment. BACKGROUND
[0002] In the field of engineering construction, engineering supervision personnel need to use measuring scale to measure the size or angle of building, so as to ensure that the construction personnel can meet the needs of drawing when building, and the construction personnel need to manually mark the measurement part after measuring the building.
[0003] The measuring scale needs to measure the distance of the internal groove of the building, and also needs to measure the length of the most basic object, and needs to determine the right angle standard of the corner of the building, and mark by chalk, so that the measuring scale can have multifunctional applicability.
[0004] The inventor found the following problems in the prior art during the implementation of the utility model: 1. When measuring the length of an object by lengthening the auxiliary ruler structure, the traditional engineering supervision measuring scale will cause visual error due to the thickness of the measuring scale; 2. The traditional engineering supervision measuring scale can only measure the length of an object when used in the construction site, but it is necessary to measure the angle relationship between the corners of the building in real time to make the building standard meet the expected requirements of the drawing. UTILITY MODEL CONTENTS
[0005] The utility model aims to provide a kind of engineering supervision measuring scale of easy adjustment to solve the problems of lack of measuring structure close to object and lack of judgment of building angle standard of traditional engineering supervision measuring scale in the above background technology. To achieve the above purpose, the utility model provides the following technical scheme: a kind of engineering supervision measuring scale of easy adjustment, including measuring scale main part, the right end upper side middle part of measuring scale main part is equipped with rectangular recess, and rectangular recess inside is provided with extension auxiliary ruler, the bottom middle part of the front and back two sides of measuring scale main part is equipped with rectangular recess, and the inside of front side rectangular recess is provided with length measuring scale, the inside of rectangular recess of measuring scale main part rear side is provided with angle measuring scale;
[0006] The upper end surface middle part of the extension auxiliary ruler is provided with a scale ruler, and the inside left end middle part of the extension auxiliary ruler is provided with a limit slide block, the right side surface bottom middle part of the limit slide block is provided with an elastic extension rod, and the inside middle part of the right end rectangular recess of the measuring scale main part is provided with a fixed slide rail;
[0007] The middle part of the right end of the front and back two side surfaces of the measuring ruler body is provided with a rectangular sliding groove, and the inner side of the rectangular sliding groove of the measuring ruler body is provided with an anti-skid sliding plate, the side of the anti-skid sliding plate close to the middle part of the measuring ruler body is provided with a rack sliding plate, and the middle part of the end of the rack sliding plate away from the anti-skid sliding plate is connected with a fixed gear, the middle part of the side of the fixed gear away from the rack sliding plate is provided with an arc-shaped sliding bar, and the outer circle arc surface of the arc-shaped sliding bar is provided with an elastic clamping rubber strip.
[0008] The inner side of the front side rectangular groove of the measuring ruler body is provided with a rotating horizontal shaft, and the middle part of the rotating horizontal shaft is provided with three groups of sliding bottom plates at equal intervals, the middle part of the bottom end surface of the measuring ruler body is provided with a circular through groove on the front and back sides, and the inner side of the front side circular through groove is provided with an adjusting knob, and the middle part of the upper end of the adjusting knob is provided with a first clamping knob.
[0009] The inner side of the bottom end rear side circular through groove of the measuring ruler body is provided with a second clamping knob, and the inner side of the rear side rectangular groove of the measuring ruler body is provided with an angle measuring ruler, and the middle part of the rear end surface of the angle measuring ruler is provided with a contact bottom plate.
[0010] Further preferably, the upper end surface of the limiting sliding block is fixed to the inner side surface of the left end middle part of the extension auxiliary ruler, and the bottom end surface of the fixed sliding rail is fixed to the inner wall bottom end middle part of the right end rectangular groove of the measuring ruler body through a screw, and the bottom end middle part surface of the limiting sliding block is slidingly connected to the middle part sliding groove inner wall of the fixed sliding rail, the left and right ends of the elastic extension rod are respectively connected to the right side surface middle part of the limiting sliding block and the sliding groove inner wall right side middle part of the fixed sliding rail, and the left and right end middle parts of the scale ruler are fixed to the upper end rectangular groove inner wall of the extension auxiliary ruler through bolts.
[0011] Further preferably, the upper and lower end surfaces of the anti-skid sliding plate are slidingly connected to the upper and lower sides of the inner walls of the front and back two side rectangular sliding grooves of the measuring ruler body, the middle part of the side of the rack sliding plate close to the front and back ends of the measuring ruler body is fixed to the side surface of the anti-skid sliding plate close to the rack sliding plate, and the side surface of the rack sliding plate away from the anti-skid sliding plate is fixed with a group of sawtooth blocks.
[0012] Further preferably, the middle part of the upper and lower ends of the fixed gear is connected to the inner wall of the measuring scale body through a bearing, and the middle part of the fixed gear near the anti-skid slide plate is engaged with the middle part of the sawtooth block of the rack slide plate, and the middle part of the other end of the fixed gear is clamped to the middle part of the side of the arc-shaped sliding bar near the fixed gear, the upper and lower end surfaces of the arc-shaped sliding bar are slidably connected to the arc-shaped sliding grooves of the inner wall of the measuring scale body, and the left end of the elastic clamping rubber strip is fixed to the middle part of the outer arc surface of the arc-shaped sliding bar.
[0013] Further preferably, the left and right ends of the rotating horizontal shaft are slidably connected to the middle parts of the left and right inner walls of the front rectangular groove of the measuring scale body through springs, the middle part of the upper end of the sliding bottom plate is rotatably sleeved on the outer surface of the middle part of the rotating horizontal shaft, the rear end surface of the sliding bottom plate is connected to the rear inner wall of the rectangular groove of the measuring scale body through a spring, the bottom end surface of the length measuring scale is connected to the middle part of the upper end of the sliding bottom plate through a rotating shaft, and the middle part of the length measuring scale is rotatably connected to the middle part of the rotating horizontal shaft.
[0014] Further preferably, the middle part of the bottom end of the adjusting knob is slidably connected to the inner wall of the bottom end front circular groove of the measuring scale body through a bearing, the upper end surface of the adjusting knob is fixed with four sliding strips at equal intervals, the upper end cross section of the sliding strip is smaller than the bottom end cross section of the sliding strip, four rectangular sliding grooves are formed in the outer ring of the first clamping knob at equal intervals, and the middle part of the upper end of the first clamping knob is connected to the inner wall of the measuring scale body through a spring.
[0015] Further preferably, the middle part of the right end of the angle measuring scale is rotatably connected to the right end of the rear rectangular groove of the measuring scale body through a rotating shaft, the upper and lower side surfaces of the contact bottom plate are slidably connected to the inner wall of the rear rectangular groove of the angle measuring scale, the front end surface of the contact bottom plate is connected to the inner wall of the rectangular groove of the angle measuring scale through springs, the bottom end of the second clamping knob is slidably connected to the inner wall of the rear circular groove of the bottom end of the measuring scale body, and the cross section of the second clamping knob is equal to the cross section of the middle part of the bottom end surface of the contact bottom plate.
[0016] Compared with the prior art, the utility model has the advantages of:
[0017] The utility model discloses, be provided with length measuring scale and adjusting knob, through setting up rectangular recess on the front side surface of measuring scale main part, and setting up length measuring scale in the recess inside, and through the sliding bottom plate of length measuring scale bottom end can make length measuring scale slide out recess inside of measuring scale main part, and through the rotation of horizontal shaft rotation, make length measuring scale can be close building surface, make user can through the scale precision measurement article length of length measuring scale surface.
[0018] The utility model discloses, be provided with angle measuring scale and contact bottom plate, setting up angle measuring scale in the rear end surface middle slot of measuring scale main part, and setting up second snap button through the rear side slot of measuring scale main part bottom end, make the inclined plane structure of second snap button bottom end can make user dials angle measuring scale, make angle measuring scale can rotate around the pivot inside recess, and drive the round groove inside of retracting contact bottom plate through the inclined plane structure, can press second snap button again to take out the recess inside angle measuring scale of contact bottom plate simultaneously, make contact bottom plate can be close building surface. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 It is whole structure schematic diagram for the utility model;
[0020] Figure 2 It is extension vice scale amplification structure schematic diagram for the utility model;
[0021] Figure 3 It is fixed gear amplification structure schematic diagram for the utility model;
[0022] Figure 4 It is length measuring scale amplification structure schematic diagram for the utility model;
[0023] Figure 5 It is the utility model Figure 4 It is A place amplification structure schematic diagram for the utility model;
[0024] Figure 6 It is angle measuring scale amplification structure schematic diagram for the utility model.
[0025] In the drawing: 1, measuring scale main part;2, extension vice scale;3, scale;4, antiskid slide plate;5, length measuring scale;6, sliding bottom plate;7, limit slide block;8, elastic extension rod;9, fixed slide rail;10, rack slide plate;11, fixed gear;12, arc sliding bar;13, elastic snap rubber strip;14, rotating horizontal shaft;15, adjusting knob;16, first snap button;17, angle measuring scale;18, contact bottom plate;19, second snap button. DETAILED DESCRIPTION
[0026] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative work under the premise that no creative work is made, belong to the scope of protection of the present application.
[0027] Please refer to Figures 1 to 6 The utility model provides a kind of technical scheme: a measurement ruler for engineering supervision is easily adjusted, including measurement ruler main body 1, the right end upper side middle part of measurement ruler main body 1 is equipped with rectangular recess, and rectangular recess inside is provided with extension vice ruler 2, the bottom middle part of the front and back sides of measurement ruler main body 1 is equipped with rectangular recess, and the inside of front side rectangular recess is provided with length measuring ruler 5, the inside of measurement ruler main body 1 rear side rectangular recess is provided with angle measuring ruler 17;
[0028] The upper end surface middle part of extension vice ruler 2 is provided with scale 3 with slot, and the inside left end middle part of extension vice ruler 2 is provided with limit sliding block 7, the right side surface bottom middle part of limit sliding block 7 is provided with elastic extension rod 8, and the inside middle part of the right end rectangular recess of measurement ruler main body 1 is provided with fixed slide rail 9;
[0029] The right end middle part of the front and back sides of measurement ruler main body 1 is equipped with rectangular sliding slot, and the inside of measurement ruler main body 1 rectangular sliding slot is provided with antiskid slide 4, the side of antiskid slide 4 close to measurement ruler main body 1 middle part is provided with rack slide plate 10, and the middle part of one end of rack slide plate 10 away from antiskid slide 4 is connected with fixed gear 11, the middle part of one side of fixed gear 11 away from rack slide plate 10 is provided with arc sliding strip 12, and the outer circle arc surface of arc sliding strip 12 is provided with elastic snap rubber strip 13;
[0030] The inside of measurement ruler main body 1 front side rectangular recess is provided with rotating horizontal shaft 14, and the middle part of rotating horizontal shaft 14 is provided with three groups of sliding base plate 6 with equal interval, the middle part of the bottom surface of measurement ruler main body 1 is equipped with circular through groove in front and back sides, and the inside of front side circular through groove is provided with adjusting knob 15, and the middle part of the upper end of adjusting knob 15 is provided with first snap button 16;
[0031] The inside of bottom end rear side circular through groove of measurement ruler main body 1 is provided with second snap button 19, and the inside of measurement ruler main body 1 rear side rectangular recess is provided with angle measuring ruler 17, and the middle part of rear end surface of angle measuring ruler 17 is provided with contact base plate 18 with slot.
[0032] In the embodiment, as Figure 2As shown in the figure, the upper end surface of the limiting sliding block 7 is fixed to the middle part of the left end of the inner surface of the extension vice ruler 2, and the bottom end surface of the fixed sliding rail 9 is fixed to the middle part of the bottom end of the inner wall of the right end rectangular groove of the measuring ruler body 1 by a screw, and the middle part surface of the bottom end of the limiting sliding block 7 is slidingly connected to the inner wall of the middle sliding groove of the fixed sliding rail 9, and the left and right ends of the elastic extension rod 8 are respectively connected to the middle part of the right side surface of the limiting sliding block 7 and the middle part of the right side of the sliding groove inner wall of the fixed sliding rail 9, and the middle parts of the left and right ends of the scale ruler 3 are fixed to the inner wall of the upper end rectangular groove of the extension vice ruler 2 by a bolt; by pulling the extension vice ruler 2 inside the right end groove of the measuring ruler body 1, the limiting sliding block 7 at the bottom end of the inner side of the extension vice ruler 2 slides along the fixed sliding rail 9 and presses the elastic extension rod 8.
[0033] In this embodiment, as shown in the figure, Figure 3 As shown in the figure, the upper and lower end surfaces of the anti-skid sliding plate 4 are slidingly connected to the upper and lower sides of the rectangular sliding groove inner wall of the front and rear sides of the measuring ruler body 1, and the middle part of one side surface of the rack sliding plate 10 close to the front and rear ends of the measuring ruler body 1 is fixed to the side surface of the anti-skid sliding plate 4 close to the rack sliding plate 10, and the side surface of the rack sliding plate 10 away from the anti-skid sliding plate 4 is fixed with a group of sawtooth blocks; by sliding the anti-skid sliding plate 4, the other side of the rack sliding plate 10 can drive the fixed gear 11 to rotate through the meshing structure of the sawtooth block.
[0034] In this embodiment, as shown in the figure, Figure 3 As shown in the figure, the upper and lower middle parts of the fixed gear 11 are bearing connected to the inner wall of the measuring ruler body 1, and the middle part of one end of the fixed gear 11 close to the anti-skid sliding plate 4 is meshingly connected to the middle part of the sawtooth block of the rack sliding plate 10, and the other end middle part of the fixed gear 11 is engaged with the middle part of one side of the arc-shaped sliding bar 12 close to the fixed gear 11 through the sawtooth block, and the upper and lower end surfaces of the arc-shaped sliding bar 12 are slidingly connected to the arc-shaped sliding groove of the inner wall of the measuring ruler body 1, and the one end of the elastic engagement rubber strip 13 close to the arc-shaped sliding bar 12 is fixed to the middle part of the outer arc surface of the arc-shaped sliding bar 12, and the left end thickness of the elastic engagement rubber strip 13 is greater than the right end thickness of the elastic engagement rubber strip 13; by rotating the fixed gear 11, the sawtooth block engagement structure of the middle part of the end of the fixed gear 11 can drive the other side of the arc-shaped sliding bar 12 to slide, and the elastic engagement rubber strip 13 on the outer arc surface of the arc-shaped sliding bar 12 can engage the extension vice ruler 2.
[0035] In this embodiment, as shown in the figure, Figure 4As shown, the left and right ends of the rotating horizontal shaft 14 are both connected to the middle part of the inner wall of the front side rectangular groove of the measuring ruler main body 1 through spring sliding, the upper end of the sliding bottom plate 6 is rotatably sleeved on the outer surface of the middle part of the rotating horizontal shaft 14, the rear end surface of the sliding bottom plate 6 is connected to the rear side of the inner wall of the rectangular groove of the measuring ruler main body 1 through a spring, the bottom end surface of the length measuring ruler 5 is connected to the upper end of the sliding bottom plate 6 through a rotating shaft, and the middle part of the length measuring ruler 5 is rotatably connected to the middle part of the rotating horizontal shaft 14; the spring at the end of the sliding bottom plate 6 can make the sliding bottom plate 6 drive the rotating horizontal shaft 14 to pop out of the inside of the groove of the measuring ruler main body 1, so that the length measuring ruler 5 can rotate and closely contact the surface of the object to be measured.
[0036] In the embodiment, as shown in the drawings, Figure 5 The bottom end of the adjusting knob 15 is connected to the inner wall of the bottom end front side circular groove of the measuring ruler main body 1 through a bearing, the upper end surface of the adjusting knob 15 is fixed with four sliding bars at equal intervals, the upper end cross section of the sliding bar is smaller than the bottom end cross section of the sliding bar, the outer circle of the first clamping knob 16 is provided with four rectangular sliding grooves at equal intervals, and the upper end of the first clamping knob 16 is connected to the inner wall of the measuring ruler main body 1 through a spring; the adjusting knob 15 is provided on the bottom end front side of the measuring ruler main body 1, so that the adjusting knob 15 can drive the first clamping knob 16 to slide up and down by the elastic force of the spring through the inclined groove structure.
[0037] In the embodiment, as shown in the drawings, Figure 6 The right end of the angle measuring ruler 17 is rotatably connected to the right end of the rear side rectangular groove of the measuring ruler main body 1 through a rotating shaft, the upper and lower surfaces of the contact bottom plate 18 are slidably connected to the inner wall of the rear end rectangular groove of the angle measuring ruler 17, the front end surface of the contact bottom plate 18 is connected to the inner wall of the rectangular groove of the angle measuring ruler 17 through a spring, the bottom end of the second clamping knob 19 is slidably connected to the inner wall of the bottom end rear side circular groove of the measuring ruler main body 1, and the cross section of the second clamping knob 19 is equal to the cross section diameter of the inner wall of the circular groove of the middle part of the bottom end surface of the contact bottom plate 18; the second clamping knob 19 is retracted into the circular groove of the angle measuring ruler 17 by rotating the angle measuring ruler 17 and the inclined surface structure of the second clamping knob 19, and the second clamping knob 19 is retracted into the inside of the contact bottom plate 18 by pressing the second clamping knob 19 again, and the contact bottom plate 18 is popped out of the groove of the angle measuring ruler 17 by the spring at the end of the contact bottom plate 18.
[0038] The use method and advantages of the utility model are as follows:
[0039] As shown in the drawings, Figure 1 , Figure 2 ,Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown in the drawings, first, the user can pull the extension ruler 2 inside the groove at the right end of the main body 1 of the ruler, so that the left end of the main body 1 of the ruler and the right end of the extension ruler 2 can abut against the surfaces at both ends of the gap of the object to be measured, and the user can slide the anti-skid slide plate 4, so that the serrated blocks on the surface of the rack slide plate 10 on the other side of the anti-skid slide plate 4 can drive the fixed gear 11 to rotate, and then the arc-shaped sliding bar 12 on the other side of the fixed gear 11 can drive the arc-shaped elastic clamping rubber strip 13 to clamp the front and back surfaces of the extension ruler 2, and the length of the gap can be determined by the scale 3, and the limiting slide block 7 at the bottom end of the extension ruler 2 slides along the fixed slide rail 9 and compresses the elastic extension rod 8;
[0040] When the length of the surface is measured, the adjusting knob 15 can be rotated, so that the first clamping knob 16 can be popped back to the lower side, and the sliding bottom plate 6 can drive the rotating horizontal shaft 14 to slide in the groove, and then the length ruler 5 can be rotated, and the length can be determined by the scale on the surface of the length ruler 5, and when the angle data is determined, the angle ruler 17 can be pulled, so that the angle ruler 17 can drive the second clamping knob 19 at the lower middle to slide out of the groove through the inclined surface structure, and the second clamping knob 19 can be pressed again, so that the second clamping knob 19 is retracted to contact the groove inside the bottom plate 18, so that the bottom plate 18 is popped out of the groove inside the angle ruler 17, and the surface of the bottom plate 18 is tightly attached to the surface of the object to be measured.
[0041] The basic principle, main features and advantages of the present application are shown and described above. The technical personnel in the industry should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application, and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.
Claims
1. A surveying tape for engineering supervision, which is easy to adjust, comprising a surveying tape body (1), characterized in that: The right end upper middle part of the measuring ruler body (1) is provided with a rectangular groove, and the inside of the rectangular groove is provided with an extension auxiliary ruler (2), the bottom middle part of the front and back of the measuring ruler body (1) is provided with a rectangular groove, and the inside of the front rectangular groove is provided with a length measuring ruler (5), the inside of the back rectangular groove of the measuring ruler body (1) is provided with an angle measuring ruler (17); The upper end surface middle part of the extension auxiliary ruler (2) is provided with a scale ruler (3), and the inside left end middle part of the extension auxiliary ruler (2) is provided with a limiting sliding block (7), the right side surface bottom middle part of the limiting sliding block (7) is provided with an elastic extension rod (8), and the inside middle part of the right end rectangular groove of the measuring ruler body (1) is provided with a fixed sliding rail (9); The right end middle part of the front and back of the measuring ruler body (1) is provided with a rectangular sliding groove, and the inside of the rectangular sliding groove of the measuring ruler body (1) is provided with an antiskid sliding plate (4), the side close to the middle part of the measuring ruler body (1) of the antiskid sliding plate (4) is provided with a rack sliding plate (10), and the middle part of the end away from the antiskid sliding plate (4) of the rack sliding plate (10) is connected with a fixed gear (11), the middle part of the side away from the rack sliding plate (10) of the fixed gear (11) is provided with an arc-shaped sliding bar (12), and the outer circle arc surface of the arc-shaped sliding bar (12) is provided with an elastic clamping rubber strip (13); The inside of the front rectangular groove of the measuring ruler body (1) is provided with a rotating horizontal shaft (14), and the middle part of the rotating horizontal shaft (14) is provided with three groups of sliding bottom plates (6) at equal intervals, the middle part of the bottom surface of the measuring ruler body (1) is provided with a circular through groove on the front and back, and the inside of the front circular through groove is provided with an adjusting knob (15), and the upper end middle part of the adjusting knob (15) is provided with a first clamping knob (16); The inside of the bottom rear circular through groove of the measuring ruler body (1) is provided with a second clamping knob (19), and the inside of the back rectangular groove of the measuring ruler body (1) is provided with an angle measuring ruler (17), and the middle part of the rear end surface of the angle measuring ruler (17) is provided with a contact bottom plate (18).
2. The easily adjustable surveying tape for engineering supervision according to claim 1, characterized in that: The upper end surface of the limiting sliding block (7) is fixed to the inside surface left end middle part of the extension auxiliary ruler (2), the bottom end surface of the fixed sliding rail (9) is fixed to the right end rectangular groove inner wall bottom middle part of the measuring ruler body (1) through a screw, and the bottom middle part surface of the limiting sliding block (7) is slidingly connected to the middle sliding groove inner wall of the fixed sliding rail (9), the left and right ends of the elastic extension rod (8) are respectively connected to the right side surface middle part of the limiting sliding block (7) and the sliding groove inner wall right side middle part of the fixed sliding rail (9), and the left and right end middle parts of the scale ruler (3) are fixed to the upper end rectangular groove inner wall of the extension auxiliary ruler (2) through bolts.
3. The easily adjustable surveying tape for engineering supervision according to claim 1, characterized in that: The upper and lower end surfaces of the anti-skid slide plate (4) are slidingly connected to the upper and lower sides of the inner walls of the rectangular slide grooves on the front and rear sides of the measuring scale body (1), and the middle part of one side surface of the rack slide plate (10) near the front and rear ends of the measuring scale body (1) is fixed to the side surface of the anti-skid slide plate (4) near the rack slide plate (10), and a group of sawtooth blocks are fixed to the side surface of the rack slide plate (10) away from the anti-skid slide plate (4).
4. The easily adjustable surveying tape for engineering supervision according to claim 1, characterized in that: The middle parts of the upper and lower ends of the fixed gear (11) are bearing-connected to the inner walls of the measuring scale body (1), and the middle parts of one end of the fixed gear (11) near the anti-skid slide plate (4) are meshingly connected to the middle parts of the sawtooth blocks of the rack slide plate (10), and the middle parts of the other end of the fixed gear (11) are clamped to the middle part of one side of the arc-shaped sliding bar (12) near the fixed gear (11), the upper and lower end surfaces of the arc-shaped sliding bar (12) are slidingly connected to the arc-shaped slide grooves in the inner walls of the measuring scale body (1), and the middle parts of the outer arc surfaces of the arc-shaped sliding bar (12) near the arc-shaped sliding bar (12) are fixed to the elastic clamping rubber strips (13), and the left end of the elastic clamping rubber strip (13) is thicker than the right end of the elastic clamping rubber strip (13).
5. The easily adjustable surveying tape for engineering supervision according to claim 1, characterized in that: The left and right ends of the rotating horizontal shaft (14) are slidingly connected to the middle parts of the inner walls of the front side rectangular grooves of the measuring scale body (1) through springs, the middle parts of the upper ends of the sliding bottom plates (6) are grooved and rotatably sleeved on the outer ring surfaces of the middle parts of the rotating horizontal shaft (14), the rear end surfaces of the sliding bottom plates (6) are connected to the rear side inner walls of the rectangular grooves of the measuring scale body (1) through springs, the bottom end surfaces of the length measuring scales (5) are connected to the middle parts of the upper ends of the sliding bottom plates (6) through shafts, and the middle parts of the length measuring scales (5) are grooved and rotatably connected to the middle parts of the rotating horizontal shaft (14).
6. The easily adjustable surveying tape for engineering supervision according to claim 1, characterized in that: The middle part of the bottom end of the adjusting knob (15) is slidingly connected to the inner wall of the bottom end front side circular groove of the measuring scale body (1) through a bearing, the upper end surface of the adjusting knob (15) is fixed with four sliding bars at equal intervals, the upper end cross-sectional width of the sliding bar is smaller than the bottom end cross-sectional width of the sliding bar, four rectangular slide grooves are formed in the outer ring of the first clamping knob (16) at equal intervals, and the middle part of the upper end of the first clamping knob (16) is connected to the inner wall of the measuring scale body (1) through a spring.
7. The easily adjustable surveying tape for engineering supervision according to claim 1, characterized in that: The middle part of the right end of the angle measuring scale (17) is grooved and rotatably connected to the right end of the rear side rectangular groove of the measuring scale body (1) through a rotating shaft, the upper and lower side surfaces of the contact bottom plate (18) are slidingly connected to the inner walls of the rear end rectangular grooves of the angle measuring scale (17), the front end surface of the contact bottom plate (18) is connected to the inner walls of the rectangular grooves of the angle measuring scale (17) through springs, the bottom end of the second clamping knob (19) is slidingly connected to the inner wall of the bottom end rear side circular groove of the measuring scale body (1), and the cross-sectional width of the second clamping knob (19) is equal to the cross-sectional diameter of the middle part of the circular groove of the bottom end surface of the contact bottom plate (18).