A range protractor

Abstract

The application provides a distance equal-division scale, which comprises a shell, two fixed shafts, a movable shaft, two sets of collecting gear sets and a set of force storage gear sets; the movable shaft is arranged in the middle of the shell and rotationally connected with the shell, and the movable shaft and the shell are provided with locking adjusting devices for fixing the movable shaft and the shell; the two fixed shafts are arranged on the two sides of the movable shaft and fixedly connected with the shell; each set of collecting gear sets comprises two collecting gears arranged in correspondence with each other, a collecting cylinder and a distance measuring line; the collecting cylinder is fixed between the two collecting gears, and the collecting cylinder and the collecting gears are sleeved on the fixed shafts; the distance measuring line is wound on the collecting cylinder, and the starting end of the distance measuring line is fixedly connected with the collecting cylinder; the winding directions of the distance measuring lines on the two sets of collecting gear sets are the same. The application can reduce positioning error and accurately find the midpoint of the measured distance.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of measurement engineering, in particular to a distance equal division ruler. BACKGROUND

[0002] In the construction process of various projects, it is often necessary to accurately find the midpoint of a certain distance on the ground or wall surface, or to divide a certain distance into several equal parts. In the prior art, a laser level and a conventional tape measure are usually used for positioning and measurement. However, when the length of the laser level reaches 2.5 m, a virtual mark of 1.5 mm will appear, making it difficult to adapt to longer measured distances. In addition, if the masonry is not level, the tape measure will be easily affected and bent, resulting in a large error in the positioning and measurement results.

[0003] In addition, in the traditional positioning and measurement construction method, the construction process is complicated, time-consuming and labor-intensive due to the influence of factors such as construction environment, climate conditions, terrain and green plant covering style.

[0004] In summary, since the method for determining the midpoint or equal division point of a distance in the prior art has the above-mentioned shortcomings, how to propose a better distance equal division ruler to reduce positioning error and reduce the construction process is a problem that needs to be solved in the field. SUMMARY

[0005] Therefore, the present application provides a distance equal division ruler, which can reduce positioning error and accurately find the midpoint of a measured distance.

[0006] The technical scheme of the present application is implemented as follows:

[0007] A distance equal division ruler comprises a housing, two fixed shafts, an active shaft, two sets of collecting gear sets and a set of force storage gear sets.

[0008] The active shaft is arranged in the middle of the housing and rotatably connected with the housing, and a locking adjustment device is arranged between the active shaft and the housing for fixing the active shaft and the housing.

[0009] The two fixed shafts are arranged on the two sides of the active shaft and fixedly connected with the housing.

[0010] Each set of collecting gear sets comprises two collecting gears arranged in an upper and lower correspondence, a collecting cylinder and a distance measuring line. The collecting cylinder is fixed between the two collecting gears, and the collecting cylinder and the collecting gears are sleeved on the fixed shaft. The distance measuring line is wound on the collecting cylinder, and the starting end of the distance measuring line is fixedly connected with the collecting cylinder. The winding directions of the distance measuring lines of the two sets of collecting gear sets are the same.

[0011] The power storage gear set comprises two power storage gears and a power storage cylinder arranged in correspondence with each other, the power storage cylinder is fixed between the two power storage gears, the power storage gears and the power storage cylinder are sleeved on the outer side of the movable shaft, and the power storage device is arranged between the power storage cylinder and the movable shaft;

[0012] The collecting gear has the same outer diameter and the same number of teeth as the power storage gear, and is in meshing transmission connection with the power storage gear;

[0013] The front side and / or the rear side of the shell is provided with an indication structure for indicating the midpoint of the distance, and the position of the indication structure corresponds to the axis of the movable shaft; the left and right sides of the shell are provided with symmetrical wire outlets, and the ends of the distance measuring wires pass through the wire outlets.

[0014] Preferably, the power storage device is a wheel strip, the wheel strip is wound on the outer side of the movable shaft, and the first end of the wheel strip is fixedly connected to the movable shaft and the second end is fixedly connected to the power storage cylinder.

[0015] Preferably, the movable shaft comprises a shaft body, a baffle, a plurality of arc-shaped limiting blocks and a connecting column;

[0016] The baffle is arranged at the bottom of the shaft body, the shaft body passes through the through hole reserved on the bottom plate of the shell, and the baffle abuts against the outer surface of the shell;

[0017] The plurality of arc-shaped limiting blocks are arranged at intervals on the top of the shaft body, and a gap is formed between adjacent two arc-shaped limiting blocks;

[0018] The connecting column is arranged at the middle part of the shaft body and is fixedly connected with the locking and adjusting device.

[0019] Preferably, the locking and adjusting device comprises a limiting disc and an adjusting knob;

[0020] The limiting disc is fixed in the through hole reserved on the upper cover plate of the shell and is located directly above the movable shaft, and a plurality of limiting teeth are arranged on the inner side wall of the limiting disc;

[0021] The adjusting knob comprises a knob body, a plurality of plug-in blocks, a clamping block, a pressing part, a clamping sleeve, a connecting part and an internal spring;

[0022] The plug-in blocks are arranged at the bottom of the knob body, pass through the limiting disc and are inserted into the gap formed between the arc-shaped limiting blocks of the movable shaft;

[0023] The connecting part is located at the middle part of the knob body and is fixedly connected with the connecting column of the movable shaft through bolts;

[0024] The clamping block and the pressing part are an integral structure, are arranged in the knob body and are in sliding connection with the knob body, and the clamping block is matched and clamped with the limiting teeth in the limiting disc;

[0025] The internal spring is arranged inside the knob body and connected with the pressing part to pop up the pressing part;

[0026] The sleeve is sleeved outside the pressing part to press down the pressing part.

[0027] Preferably, the adjusting knob further comprises a top cover and a cover body; the cover body is sleeved outside the knob body and covers the limiting disc; and the top cover is fixed on the top of the knob body.

[0028] Preferably, the limiting teeth are arranged in the same direction, and the clamping block is a slope body matched with the limiting teeth.

[0029] Preferably, the end of each distance measuring line is fixed with a connecting piece.

[0030] Preferably, a pair of limiting columns are arranged at the front end of the outlet in the inside of the shell.

[0031] A distance equal division scale comprises a shell, a fixed shaft, a collecting cylinder, a force storage device, two distance measuring lines and an indication structure.

[0032] The fixed shaft is fixed in the middle of the shell, the collecting cylinder is sleeved outside the fixed shaft, and the force storage device is arranged between the collecting cylinder and the fixed shaft.

[0033] The two distance measuring lines are wound outside the collecting cylinder, and the starting ends of the two distance measuring lines are fixedly connected with the collecting cylinder; the winding directions of the two distance measuring lines are the same.

[0034] The front side and / or the rear side of the shell is provided with the indication structure for indicating the midpoint of the distance, and the position of the indication structure corresponds to the axis of the fixed shaft; the left and right sides of the shell are provided with symmetrical outlets, and the ends of the distance measuring lines pass through the outlets.

[0035] Preferably, the force storage device is a wheel, which is wound outside the fixed shaft, and the first end of the wheel is fixedly connected with the fixed shaft, and the second end is fixedly connected with the collecting cylinder.

[0036] As can be seen from the above, the distance equal division scale provided by the present application can accurately locate the midpoint of the measured distance, improves the positioning accuracy, further can locate the multiple equal division points of the measured distance, and improves the measurement range of the measured distance. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 It is a structure schematic view of a distance equal division scale in the embodiment of the present application.

[0038] Figure 2 It is a top view of a distance equal division scale in the embodiment of the present application.

[0039] Figure 3 The internal structure diagram of the hub gear set and the force storage gear set in the embodiment of the present application.

[0040] Figure 4 The structure diagram of the movable shaft in the embodiment of the present application.

[0041] Figure 5 The structure diagram of the limiting disc in the embodiment of the present application.

[0042] Figure 6 The structure diagram of the adjusting knob in the embodiment of the present application.

[0043] Figure 7 The assembly diagram of the adjusting knob and the movable shaft in the embodiment of the present application.

[0044] Figure 8 The clamping diagram of the clamping block and the limiting disc in the embodiment of the present application.

[0045] Figure 9 The perspective view of a distance equal division scale in the embodiment of the present application.

[0046] Figure 10 The structure diagram of the shell in the embodiment of the present application.

[0047] Figure 11 The structure diagram of another distance equal division scale in the embodiment of the present application.

[0048] Figure 12 The perspective view of another distance equal division scale in the embodiment of the present application.

[0049] Figure 13 The positioning diagram of the five equal points of the measured distance L in the embodiment of the present application.

[0050] Figure 14 The positioning diagram of the four equal points of the measured distance L in the embodiment of the present application. DETAILED DESCRIPTION

[0051] In order to make the technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0052] As shown in Figures 1 to 10 The present application provides a distance equal division scale, which comprises a shell 1, two fixed shafts 23, a movable shaft 32, two hub gear sets 2 and one force storage gear set 3.

[0053] The movable shaft 32 is arranged in the middle of the shell 1 and is rotatably connected with the shell 1, and a locking adjusting device is arranged between the movable shaft 32 and the shell 1 for fixing the movable shaft 32 and the shell 1.

[0054] Two fixed shafts 23 are arranged on both sides of the movable shaft 32 and are fixedly connected with the shell 1;

[0055] Each set of the collecting gear set 2 comprises two collecting gears 25 arranged in correspondence with each other, a collecting cylinder 21 and a ranging line 22; the collecting cylinder 21 is fixed between the two collecting gears 25, and the collecting cylinder 21 and the collecting gears 25 are sleeved on the fixed shaft 23; the ranging line 22 is wound on the collecting cylinder 21, and the starting end of the ranging line 22 is fixedly connected with the collecting cylinder 21; the winding directions of the ranging lines 22 on the two sets of the collecting gear set 2 are the same;

[0056] The force storage gear set 3 comprises two force storage gears 35 arranged in correspondence with each other and a force storage cylinder 31; the force storage cylinder 31 is fixed between the two force storage gears 35, and the force storage gears 35 and the force storage cylinder 31 are sleeved on the outside of the movable shaft 32, and the force storage cylinder 31 is provided with the force storage device 4 between the force storage cylinder 31 and the movable shaft 32;

[0057] The outer diameters and the number of teeth of the collecting gears 25 and the force storage gears 35 are the same, and the collecting gears 25 and the force storage gears 35 are in meshing transmission connection with each other;

[0058] The front side and / or the rear side of the shell 1 is provided with an indicating structure 11 for indicating the midpoint of the distance, and the position of the indicating structure 11 corresponds to the axis of the movable shaft 32; the left and right sides of the shell 1 are provided with symmetrical line outlets 12, and the ends of the ranging lines 22 are drawn out of the line outlets 12.

[0059] In the technical scheme of the present application, the above-mentioned distance equal-division scale can be called the main scale. When the midpoint of a certain measured distance needs to be positioned, the ends of the two ranging lines at the line outlets can be pulled until the ends of the two ranging lines are respectively positioned at the two endpoints of the measured distance. When the ends of the ranging lines are pulled, the ranging lines drive the collecting gear set 2 to rotate, and since the winding directions of the ranging lines are the same, the rotating directions of the two collecting gear sets 2 are the same, so that the force storage gear set 3 in the middle is reversely rotated by transmission, and within a certain limit, the two line outlets continuously draw out the ranging lines. Alternatively, when the ranging line of one line outlet is pulled, the ranging line drives one collecting gear set to rotate, and under the transmission of the gear, the ranging line of the other line outlet will also be simultaneously drawn out. In addition, since the outer diameters of the transmission gears are equal, and the outer diameters of the collecting shafts on which the ranging lines are wound are also the same, the lengths of the ranging lines drawn out of the two line outlets are always equal, so that the position indicated by the indicating structure 11 of the equal-division scale is always the midpoint of the distance.

[0060] In addition, since the force storage device is arranged in the force storage gear set, the force storage device can always ensure that the ranging line is in a tensioned state, so that the midpoint of the measured distance can be accurately found within the measurement limit.

[0061] In the technical solution of the present application, the distance equal-division scale can be implemented by using various implementation methods. Hereinafter, the technical solution of the present application will be described in detail by taking one of the implementation methods as an example.

[0062] For example, preferably, in one specific embodiment of the present application, as shown in Figure 2 and Figure 3 , the force storage device 4 can be a wheel strip, which is wound outside the movable shaft 32, and the first end of the wheel strip is fixedly connected to the movable shaft 32, and the second end is fixedly connected to the force storage cylinder 31. When the ranging line transmission force storage gear 35 rotates, at this time, under the action of the locking adjusting device, the movable shaft 32 is fixed relative to the housing, and the force storage cylinder 31 rotates with the force storage gear 35, at this time, the force storage cylinder will drive the second end of the wheel strip to rotate, so that the wheel strip is wound tightly on the movable shaft 32, thereby having a rebounding force, so that the ranging line gear and the force storage gear will not be excessively unwound due to rotational inertia, and therefore, under the action of the wheel strip, it can always ensure that the ranging line pulled out is in a tension state, which can prevent the midpoint of the measured distance from being inaccurate due to the loosening of the ranging line, and improve the accuracy of the measurement. In addition, when the measurement is completed, the ends of the two ranging lines can be loosened, and no tension is applied to the ends, at this time, the force storage cylinder and the force storage gear will be reversely rotated under the action of the rebounding force of the wheel strip, driving the ranging line gear and the ranging cylinder to also reversely rotate, so that the ranging line is wound back to the ranging cylinder, realizing the automatic retraction of the ranging line.

[0063] For another example, preferably, in one specific embodiment of the present application, as shown in Figure 1 and Figure 4 , the movable shaft 32 can include a shaft body 326, a baffle 321, a plurality of arc-shaped limiting blocks 323, and a connecting column 325.

[0064] The baffle 321 is arranged at the bottom of the shaft body 326, the shaft body passes through the through hole reserved on the bottom plate of the housing 1, and the baffle 321 abuts against the outer surface of the housing 1.

[0065] The plurality of arc-shaped limiting blocks 323 are arranged at the top of the shaft body 326 in a spaced manner, and a gap 324 is formed between adjacent two arc-shaped limiting blocks 323.

[0066] The connecting column 325 is arranged at the middle part of the shaft body and is fixedly connected with the locking adjusting device.

[0067] For another example, preferably, in one specific embodiment of the present application, as shown in Figures 5 to 9 , the locking adjusting device can include a limiting disc 6 and an adjusting knob 5.

[0068] The limiting disc 6 is fixed in the through hole reserved on the upper cover plate of the shell 1 and is located directly above the movable shaft 32, and a plurality of limiting teeth 61 are arranged on the inner side wall of the limiting disc 6;

[0069] The adjusting knob 5 comprises a knob body 50, a plurality of plug-in blocks 51, a clamping block 52, a pressing part 53, a clamping sleeve 54, a connecting part 55 and an internal spring.

[0070] The plug-in block 51 is arranged at the bottom of the knob body 50, passes through the limiting disc 6 and is inserted into the gap 324 formed between the arc-shaped limiting blocks 323 of the movable shaft 32;

[0071] The connecting part 55 is located at the middle part of the knob body 50 and is fixedly connected with the connecting column 325 of the movable shaft 32 through a bolt;

[0072] The clamping block 52 and the pressing part 53 are in an integrated structure, are arranged in the knob body 50 and are in sliding connection with the knob body, the clamping block 52 is in clamping connection with the limiting teeth 61 in the limiting disc 6;

[0073] The internal spring is arranged in the interior of the knob body and is connected with the pressing part 53 and is used for popping out the pressing part 53;

[0074] The clamping sleeve 54 is sleeved on the outside of the pressing part 53 and is used for pressing down the pressing part 53.

[0075] In the technical scheme of the present application, reference is made to Figure 7 The connecting part 55 of the adjusting knob 5 is fixedly connected with the connecting column 325 of the movable shaft 32, and the plurality of plug-in blocks 51 of the adjusting knob 5 are further inserted into the gap 324 formed between the arc-shaped limiting blocks 323 of the movable shaft 32, so that the adjusting knob 5 and the movable shaft 32 can be spliced into an integral whole, when one of the adjusting knob 5 and the movable shaft 32 rotates, the other one can be well driven to rotate at the same time, and the integrity of the two is improved.

[0076] Preferably, as an example, the adjusting knob 5 can further comprise a top cover 57 and a cover body 58; the cover body 58 is sleeved on the outside of the knob body and is covered on the limiting disc 6; and the top cover 57 is fixed on the top of the knob body.

[0077] Preferably, as an example, the clamping block 52 and the pressing part 53 can be respectively provided with two and are symmetrically arranged on the two sides of the knob body.

[0078] Preferably, in one specific embodiment of the present application, the first end of the wheel strip can be fixed on the connecting column 325 on the movable shaft 32, the wheel strip is wound outside the movable shaft 32 from the gap 324 between the two arc-shaped limiting blocks 323 on the movable shaft, and the wheel strip in the gap 324 is clamped and fixed by the insertion block 51 of the adjusting knob in the gap 324, so as to ensure the reliability of the fixed connection between the first end of the wheel strip and the movable shaft 32.

[0079] In the technical scheme of the present application, reference is made to Figure 8 When the ranging line 22 is pulled, the collecting gear and the force storage gear are rotated, at this time, the clamping block 52 is clamped in the limiting tooth 61, so that the adjusting knob 5 is clamped between the housing 1, and the adjusting knob is fixedly connected with the movable shaft 32, so at this time, the movable shaft 32 is also locked and cannot be rotated, and the force storage gear drives the wheel strip to rotate around the movable shaft. If the measured distance is long, when the ranging line is pulled out to a certain length, the wheel strip is too tightly wound and is not easy to continue to pull out the ranging line, at this time, the sleeve 54 can be slid downward, the pressing part 53 is pressed into the inside of the knob body in the process of the sleeve 54 sliding downward, and the clamping block 52 integrated with the pressing part is also slid into the inside of the knob body, at this time, the clamping block 52 and the limiting tooth 61 are no longer clamped, and are unlocked. Since the wheel strip is tightly wound in the process of the ranging line being pulled out, the wheel strip has a large rebound force, so when the clamping block is unlocked, the wheel strip drives the movable shaft 32 and the adjusting knob 5 to rotate reversely relative to the housing 1 under the action of the rebound force, so that the wheel strip is loosened again; the sleeve 54 is slid upward again, the pressing part 53 and the clamping block 52 are ejected under the action of the internal spring, so that the clamping block and the limiting tooth 61 are clamped again, the adjusting knob 5 and the movable shaft 32 are locked again, and at this time, since the wheel strip is loosened, the ranging line can be pulled out outward again, so that the measuring range of the protractor is greatly improved.

[0080] In addition, preferably, in one specific embodiment of the present application, as shown in Figure 8As shown, the limiting teeth 61 can be arranged in the same direction, and the clamping block 52 can be a slope body matched with the limiting teeth 61. Through the above arrangement, the clamping block and the limiting teeth are only locked in the same direction as the rotation of the force storage gear (for example, clockwise), but not locked in the opposite direction (for example, counterclockwise), and the relative rotation can occur. For example, when the distance measuring line is pulled outward, the collecting gear rotates counterclockwise, the force storage gear rotates clockwise, and the clamping block and the limiting teeth are clamped in the clockwise direction, so that the movable shaft cannot rotate clockwise. Therefore, when the force storage gear rotates, the movable shaft does not rotate, and the wheel bar is stored. However, if the measured distance is short, the pulled distance measuring line is short, or other conditions cause the wheel bar to have a small rebound force, so that the pulled distance measuring line is not well tensioned, and since the clamping block and the limiting teeth are not locked in the counterclockwise direction, the adjusting knob 5 can be rotated in the reverse direction (i.e. counterclockwise) at this time, driving the movable shaft 32 to rotate, driving the wheel bar and making the wheel bar tightly wound on the movable shaft 32 and storing force, and then making the distance measuring line be tensioned, ensuring the accuracy of the measurement.

[0081] Therefore, in the technical scheme of the present application, by arranging the force storage device 4 and the locking adjusting device, long-distance midpoint measurement and short-distance midpoint measurement can be realized, the measurement range of the protractor is significantly improved, and when measuring the midpoint of any distance, the distance measuring line can be kept in a tensioned state, greatly improving the accuracy of the measurement.

[0082] In addition, preferably, in one specific embodiment of the present application, the end of each distance measuring line can be fixed with a connecting piece.

[0083] Preferably, as an example, as shown in Figure 9 As shown, the ends of the two distance measuring lines can be respectively fixed with an M-shaped hook 221 and a Y-shaped hook 222, and the M-shaped hook 221 and the Y-shaped hook 222 can be hooked with each other.

[0084] In addition, preferably, in one specific embodiment of the present application, as shown in Figure 10 As shown, a pair of limiting columns 13 can be arranged on the inner side wall of the bottom plate and the upper cover of the shell 1, for guiding the distance measuring line, so that the distance measuring line 22 can be smoothly released or retracted from the line outlet 12, preventing the distance measuring line from being knotted.

[0085] Preferably, in one specific embodiment of the present application, gear grooves 14 for placing the collecting gear and the force storage gear can be arranged on the inner side wall of the bottom plate and the upper cover of the shell 1.

[0086] Preferably, in one specific embodiment of the present application, the indicating structure can be a triangular pointer.

[0087] In summary, in the distance equalizer provided by the present application, two groups of collecting gear sets and one group of force storage gear sets are arranged, and two distance measuring lines are wound on two collecting drums, so that the length of each distance measuring line is longer, and the midpoint of a longer distance can be measured, and the measurement range is greatly improved. The force storage device is arranged, so that the distance measuring line can be always in a tensioned state, the measurement accuracy is ensured, and the distance measuring line can be automatically retracted. The locking and adjusting device is arranged, so that the distance equalizer (i.e. the main ruler) can adapt to and ensure the measurement of the midpoint of a distance with any length, and the measurement range and the measurement accuracy are further improved.

[0088] As shown in Figure 11 and Figure 12 The present application also provides another distance equalizer, which comprises a housing 100, a fixed shaft 102, a collecting drum 103, a force storage device 106, two distance measuring lines 104 and an indicating structure 101.

[0089] The fixed shaft 102 is fixed in the middle of the housing 100, the collecting drum 103 is sleeved on the outer side of the fixed shaft 102, and the force storage device 106 is arranged between the collecting drum 103 and the fixed shaft 102.

[0090] The outer side of the collecting drum 103 is wound with two distance measuring lines 104, and the starting ends of the two distance measuring lines 104 are fixedly connected with the collecting drum 103; the winding directions of the two distance measuring lines 104 are the same.

[0091] The front side and / or the rear side of the housing 100 is provided with the indicating structure 101 for indicating the midpoint of a distance, and the position of the indicating structure 101 corresponds to the axis of the fixed shaft 102; the left and right sides of the housing 100 are provided with symmetrical line outlets 110, and the ends of the distance measuring lines 104 pass through the line outlets 110.

[0092] In the technical scheme of the present application, the distance equalizer can be called a secondary scale. Since the two distance measuring lines are wound on the same winding drum 103 in the same winding direction and the ends of the two distance measuring lines are respectively drawn out of the two line outlets 110, the ends of the two distance measuring lines can be drawn simultaneously or the end of one distance measuring line can be drawn, and in either case, the winding drum 103 can be rotated, so that the two line outlets can simultaneously draw out equal lengths of the distance measuring lines. Therefore, in actual use, the ends of the two distance measuring lines can be respectively placed at the two ends of the distance to be measured, and since the lengths of the two distance measuring lines drawn out are equal, the indicating structure 101 of the distance equalizer can always indicate the midpoint of the distance to be measured. In addition, since the force storage device 106 is arranged between the winding drum 103 and the fixed shaft 102, the force storage device can store force while the winding drum is rotated by the distance measuring lines, so that the winding drum can be prevented from being excessively or rapidly rotated to cause the distance measuring lines drawn out to be excessively long or loose, and the distance measuring lines drawn out can always be in a taut state, so that measurement errors caused by loose distance measuring lines can be avoided and the accuracy of midpoint measurement can be ensured.

[0093] In the technical scheme of the present application, the distance equalizer can be implemented by using various implementation methods. Hereinafter, one implementation method will be taken as an example to introduce the technical scheme of the present application in detail.

[0094] For example, preferably, in one specific embodiment of the present application, the force storage device 106 can be a wheel, which is wound on the outside of the fixed shaft 102 and has a first end fixedly connected to the fixed shaft 102 and a second end fixedly connected to the winding drum 103. When the distance measuring lines 104 are drawn to rotate the winding drum 103, the winding drum 103 rotates the second end of the wheel, so that the wheel is wound tightly on the fixed shaft 102, and the wheel has a rebounding force. Under the action of the rebounding force of the wheel, the winding drum can not be excessively rotated by inertia, so that the distance measuring lines can be kept taut and the accuracy of measurement can be ensured. In addition, when the measurement is completed and the ends of the distance measuring lines are released and no longer subjected to pulling force, the winding drum can be reversely rotated under the action of the rebounding force of the wheel, so that the distance measuring lines are wound on the winding drum and the distance measuring lines can be automatically retracted.

[0095] For another example, preferably, in one specific embodiment of the present application, the end of each distance measuring line can be fixed with a connecting piece.

[0096] For example, preferably, the ends of the two distance measuring lines can be respectively fixed with an M-shaped hook 108 and a Y-shaped hook 109, and the M-shaped hook 108 and the Y-shaped hook 109 can be hooked to each other.

[0097] In addition, preferably, in one specific embodiment of the present application, a pair of limiting posts 107 can be arranged at the front end of the housing 100, in front of the wire outlet 110, for guiding the ranging line, so that the ranging line 104 can be smoothly released or retracted from the wire outlet 110, and the ranging line is prevented from being knotted.

[0098] In addition, preferably, in one specific embodiment of the present application, the housing 100 can be a rhombic structure, and the indicating structure 101 can be two opposite angles of the rhombic structure.

[0099] Preferably, as an example, the two ends of the fixed shaft 102 can be fixedly connected with the bottom plate and the upper cover of the housing 100 by bolts, respectively.

[0100] In summary, in the above-mentioned distance equal-division scale (i.e., the above-mentioned secondary scale) provided by the present application, by winding two ranging lines on the same winding drum in the same winding direction, and pulling the end of one or two ranging lines to drive the winding drum to rotate, the distance of the ranging lines released from the two wire outlets can be ensured to be equal. In addition, by arranging the force storage device, the pulled ranging line can be ensured to be always in a tensioned state, thereby ensuring the accuracy of the measurement.

[0101] In addition, as an example, in another preferred specific embodiment of the present application, a plurality of the above-mentioned primary scales and / or secondary scales can be combined with each other, wherein two adjacent primary scales and / or secondary scales are connected with each other by the M-shaped hook and the Y-shaped hook of the end of the ranging line; thereby the multiple equal-division points of the measured distance can be found.

[0102] For example, referring to Figure 13 , assuming that the measured distance L needs to be divided into six equal segments, and the five equal-division point of the measured distance L is to be found, one primary scale and two secondary scales can be used. The M-shaped hook of the first secondary scale is positioned at one end point of the measured distance L, and the Y-shaped hook thereof is connected with the M-shaped hook of the primary scale. The Y-shaped hook of the primary scale is connected with the M-shaped hook of the second secondary scale, and the Y-shaped hook of the second secondary scale is positioned at the other end point of the measured distance L. Since the two ends of each primary scale and secondary scale are equidistant wire outlets, the position of the primary scale or secondary scale and the connection point of the M-shaped hook and the Y-shaped hook are all equal-division points. Thus, the five equal-division point of the measured distance L is found by using one primary scale and two secondary scales, and the measured distance L is further divided into six equal segments.

[0103] For another example, one primary scale and two secondary scales can also be used to divide the measured distance L into five equal segments, i.e., to find the four equal-division point of the measured distance L, referring to Figure 14The indication structure of the first auxiliary ruler can be positioned at one end of the measured distance L, and the Y-shaped hook is connected with the M-shaped hook of the main ruler. The Y-shaped hook of the main ruler is connected with the M-shaped hook of the second auxiliary ruler, and the Y-shaped hook of the second auxiliary ruler is positioned at the other end of the measured distance L. Since the two ends of each main ruler and auxiliary ruler are equidistant, the connection points of the main ruler or auxiliary ruler and the M-shaped hook and the Y-shaped hook are all bisecting points, so that the four equal points of the measured distance L can also be found by using one main ruler and two auxiliary rulers, and the measured distance L can be five equal points.

[0104] Therefore, according to actual needs, within the measurement limit, by reasonably combining the number and position of the main ruler and the auxiliary ruler, the multiple equal points of the measured distance can be found.

[0105] In addition, the main ruler and the auxiliary ruler can work independently, respectively, to find the midpoint of a measured distance. Since the two measuring lines of the main ruler are wound on two collecting shafts, respectively, each collecting shaft can wind longer measuring lines, so that the main ruler can adapt to longer measured distances. The auxiliary ruler is two measuring lines wound on the same collecting shaft, so that the winding space of each measuring line is limited, resulting in that the winding length of each measuring line is limited. Therefore, when the midpoint of a small distance needs to be measured, the auxiliary ruler can be directly used alone for measurement. If the measured distance is longer, the midpoint of the measured distance can be measured by using the main ruler. Even if the length of the measuring line of the main ruler is not enough, multiple main rulers and / or multiple auxiliary rulers need to be used in cooperation.

[0106] In addition, as an example, in another preferred embodiment of the present application, the connector at the end of each measuring line in the main ruler or the auxiliary ruler can be further provided with an indication structure, or a diamond buckle connector or other connector with an indication function can also be used, so that the indication of the bisecting point at the connection position can be more accurate.

[0107] The above only describes the preferred embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A range vial, characterized in that, The utility model relates to a distance measuring device, including: A shell, two fixed shafts, a movable shaft, two sets of collecting gear sets and a set of force storage gear set; The movable shaft is arranged in the middle of the shell and rotatably connected with the shell, and a locking adjusting device is arranged between the movable shaft and the shell for fixing the movable shaft and the shell; The two fixed shafts are arranged on the two sides of the movable shaft and fixedly connected with the shell; Each set of collecting gear set includes two collecting gears arranged in correspondence, a collecting cylinder and a distance measuring line, the collecting cylinder is fixed between the two collecting gears, and the collecting cylinder and the collecting gears are sleeved on the fixed shaft, the distance measuring line is wound on the collecting cylinder, and the starting end of the distance measuring line is fixedly connected with the collecting cylinder, the winding directions of the distance measuring lines of the two sets of collecting gear sets are same; The force storage gear set includes two force storage gears arranged in correspondence and a force storage cylinder, the force storage cylinder is fixed between the two force storage gears, the force storage gears and the force storage cylinder are sleeved on the outside of the movable shaft, and a force storage device is arranged between the force storage cylinder and the movable shaft; The outer diameters and the number of teeth of the collecting gears and the force storage gears are same, and the collecting gears and the force storage gears are meshingly and drivingly connected with each other; The front side and / or the rear side of the shell is provided with an indicating structure for indicating the midpoint of the distance, and the position of the indicating structure corresponds to the axis of the movable shaft, the left and right sides of the shell are provided with symmetrical wire outlets, and the ends of the distance measuring lines pass through the wire outlets; The movable shaft includes a shaft body, a baffle, a plurality of arc-shaped limiting blocks and a connecting column; The baffle is arranged at the bottom of the shaft body, the shaft body passes through the through hole reserved on the bottom plate of the shell, and the baffle abuts against the outer surface of the shell; The plurality of arc-shaped limiting blocks are arranged at the top of the shaft body in a spaced mode, and a gap is formed between adjacent two arc-shaped limiting blocks; The connecting column is arranged in the middle of the shaft body and fixedly connected with the locking adjusting device; The locking adjusting device includes a limiting disc and an adjusting knob; The limiting disc is fixed in the through hole reserved on the upper cover plate of the shell and located directly above the movable shaft, and a plurality of limiting teeth are arranged on the inner side wall of the limiting disc; The adjusting knob includes a knob body, a plurality of plug-in blocks, a clamping block, a pressing part, a clamping sleeve, a connecting part and an internal spring; The plug-in blocks are arranged at the bottom of the knob body, pass through the limiting disc and inserted into the gap formed between the arc-shaped limiting blocks of the movable shaft; The connecting part is located in the middle of the knob body and fixedly connected with the connecting column of the movable shaft through a bolt; The clamping block and the pressing part are an integral structure, arranged in the knob body and slidingly connected with the knob body, the clamping block is clamped with the limiting teeth in the limiting disc, The internal spring is arranged in the knob body and connected with the pressing part, for popping out the pressing part; The clamping sleeve is sleeved on the outside of the pressing part, for pressing down the pressing part.

2. The range veler according to claim 1, wherein The force storage device is a wheel strip, the wheel strip is wound on the outside of the movable shaft, and the first end of the wheel strip is fixedly connected with the movable shaft and the second end is fixedly connected with the force storage cylinder.

3. The range veler according to claim 1, wherein, The adjusting knob further includes a top cover and a cover body, the cover body is sleeved on the outside of the knob body and covers the limiting disc, and the top cover is fixed on the top of the knob body.

4. The range veler according to claim 1, wherein, The limiting teeth are arranged in the same direction, and the clamping block is a slope body matched with the limiting teeth.

5. The range veler according to claim 1, wherein, The end of each ranging line is fixed with a connecting piece.

6. The range veler according to claim 1, wherein, The inside of the shell is provided with a pair of limiting columns at the front end of the outlet.

Images