A measuring steel tape testing device

Abstract

The present application relates to the technical fields of metrological verification device, in particular to a kind of steel tape measure verification device for measurement.It includes frame body, mobile rail is equipped between frame body, mobile rail side wall is equipped with mobile car, mobile car moves in the mobile rail side wall along horizontal direction, the bottom of tape body is equipped with fixed assembly, the present application is stretched to the core by the control mobile car and the horizontal movement of the tongue on the surface of connecting plate, when the tongue moves to the lower of support frame, rack drives double-head gear lever to meshing rotation, when double-head gear lever rotates, it drives bevel gear to rotate, so that rotating frame rotates in the inner wall of support frame, when rotating frame rotates, the press roll that its bottom is equipped with is away from the surface of pad, the gap between press roll and pad increases, when the core is driven away from the lower of current press roll by the tongue, rotating frame is reset by torsional spring force, so that the core on the surface of pad is pressed by press roll Limitation, to improve the verification effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of metrological verification devices, in particular to a steel tape measure verification device for metrology. BACKGROUND

[0002] Steel tape measures are commonly used measuring tools in industrial and enterprise units. During the manufacturing process of steel tape measures, there will be errors in the marking of the scale, and the larger the measuring range of the steel tape measure, the greater the error. Therefore, the precision of the steel tape measure needs to be verified when it is shipped.

[0003] There are many existing technologies for verification devices, such as:

[0004] Chinese patent publication No. CN220818771U discloses a steel tape measure metrological verification reading device, which includes a base and a reading device slidingly installed on the base. A rotating roller is movably installed on the base and cooperates with the reading device. The rotating roller and the reading device are connected and fixed by a flexible buffer device. The flexible buffer device is used to adaptively adjust the rotating roller. The reading device is used to measure the workpiece on the base. The rotating roller is driven by the reading device to contact the workpiece, which limits and flattens the workpiece, preventing the workpiece from being misaligned or protruding during measurement, thereby affecting the accuracy of the measurement. The flexible buffer device is used to adaptively adjust the rotating roller to improve the safety performance.

[0005] However, there are still some problems in actual use:

[0006] 1. The traditional verification device cannot effectively limit the position of the core in the stretched state. During the stretching process of the core, the core is prone to positional deviation due to the lack of limiting measures. This positional deviation greatly affects the accuracy of the verification. The length measurement of the steel tape measure needs to be stable and accurate. Once the position of the core deviates, the stretching state of the steel tape measure will change, resulting in measurement deviation and reducing the reliability and accuracy of the verification.

[0007] 2. When the core verification is completed and the automatic winding operation is performed, the core is often bent and stuck. In this case, the operator needs to adjust it, which undoubtedly greatly reduces the winding efficiency. On the one hand, the involvement of the operator increases the complexity and time cost of the operation. On the other hand, frequent adjustment may cause damage to the steel tape measure, affecting its service life and measurement accuracy.

[0008] Therefore, we propose a steel tape measure verification device for metrology. SUMMARY

[0009] The present application aims to provide a measuring steel tape testing device to solve the problems in the background.

[0010] To achieve the above object, the present application aims to provide a measuring steel tape testing device, comprising a frame, the frame is provided with a moving rail, the moving rail is symmetrically arranged, the surface of the moving rail is provided with corresponding scale lines, the side wall of the moving rail is provided with a moving trolley, the moving trolley moves along the horizontal direction in the side wall of the moving rail, the moving trolleys are provided with a connecting plate, the surface of the connecting plate is provided with a clamping tongue, the clamping tongue is used for limiting the end limiting hole of the steel tape body, the surface of the moving rail is provided with a backing plate, the surface of the backing plate is provided with a through slot, one side of the frame is provided with a steel tape body, the bottom of the steel tape body is provided with a fixing assembly, the fixing assembly is used for fixing and limiting the steel tape body, the surface of the backing plate is provided with a supporting frame, the inside of the supporting frame is provided with a limiting assembly, during the testing process of the steel tape body, the limiting assembly is used for limiting the stretched reel core of the steel tape body, so that the reel core moves in close contact with the surface of the backing plate, the lower side of the clamping tongue is provided with an adjusting assembly, the adjusting assembly is used for adjusting the height of the clamping tongue and reinforcing the clamping tongue and the end limiting hole of the steel tape body during the moving process.

[0011] As a further improvement of the present technical solution, the fixing assembly comprises a motor arranged below the steel tape body, a main gear is arranged at the output end of the motor, a pair of auxiliary gears are arranged on both sides of the main gear, a lead screw is arranged at the end of the auxiliary gear, a clamping plate is arranged on the surface of the lead screw, and the clamping plate moves relatively when the lead screw rotates.

[0012] As a further improvement of the present technical solution, gaps are arranged between the backing plates arranged on the surface of the moving rail, the width of the gaps is smaller than the width of the reel core of the steel tape body, and the reel core moves on the surface of the backing plate when the reel core is subjected to the pulling force of the clamping tongue.

[0013] As a further improvement of the present technical solution, a rack is arranged on the top of the moving trolley, the rack moves on the surface of the backing plate through the through slot, and a limiting assembly is arranged on one side of the backing plate.

[0014] As a further improvement of the present technical solution, the limiting assembly comprises a rotating frame arranged in the supporting frame, a supporting rod is arranged on the side wall of the rotating frame, the supporting rod rotates in the supporting frame, a pressure roller is arranged at the bottom of the rotating frame, a rubber pad is arranged at the bottom of the pressure roller, and the rubber pad is in close contact with the surface of the backing plate.

[0015] As a further improvement of the present technical solution, a torsional spring is arranged between the supporting frame and the supporting rod, the rotating frame rotates in the supporting frame, and in the natural state, the rotating frame is subjected to the action force of the torsional spring and is perpendicular to the horizontal plane.

[0016] As a further improvement to this technical solution, a bevel gear is provided on the surface of the support rod, and a double-headed gear rod is provided below the bevel gear. When the moving vehicle moves the connecting plate, the rack on the top of the moving vehicle drives the double-headed gear rod to mesh and rotate, causing the bevel gear above the double-headed gear rod to rotate. When the bevel gear rotates, it drives the rotating frame to rotate, causing the core of the measuring tape body to move to below the pressure roller. When the rack moves away from the double-headed gear rod, the rotating frame is reset by the force of the torsion spring, and the pressure roller squeezes and limits the top of the core.

[0017] As a further improvement to this technical solution, the adjustment component includes a support plate located below the latch, guide rods are provided on both sides of the support plate and between the connecting plate, and a cylinder is provided at the bottom of the connecting plate. The cylinder passes through the connecting plate to push the support plate, causing the support plate to move the latch in a vertical direction, thereby fixing the end limiting holes of the measuring tape body of different sizes.

[0018] As a further improvement to this technical solution, the latch is in the shape of a "7" and the width of the latch is smaller than the gap width formed between the pads. The piston rod at the end of the control cylinder drives the latch to pass through the pad and move to the limiting hole at the end of the measuring tape body.

[0019] As a further improvement to this technical solution, a cylindrical tube is provided on one side of the latch, and a sliding column is slidably provided on the inner wall of the cylindrical tube. A telescopic spring is provided between the cylindrical tube and the sliding column, and a wedge-shaped block is provided on the top of the sliding column. When the limiting hole at the end of the measuring tape body is fixed on the surface of the latch, the end of the wedge-shaped block is squeezed by the force of the coil spring inside the measuring tape body, so that the sliding column at the bottom of the wedge-shaped block slides on the inner wall of the cylindrical tube.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. In this measuring steel tape measure calibration device, the tape measure body is placed on the surface of the frame, and the output end of the control motor drives the main gear to rotate. When the main gear rotates, it drives the secondary gear to mesh and rotate. When the secondary gear rotates, it drives the lead screw to rotate coaxially. The clamping plates provided on the surface of the lead screw move relative to each other, so that the clamping plates move to the side wall of the tape measure body to clamp and fix it, thereby improving the stability of the tape measure body and thus improving the calibration efficiency.

[0022] 2. In this measuring steel tape measure calibration device, the moving carriage drives the latch on the surface of the connecting plate to move horizontally. The latch stretches the core. When the latch moves to below the support frame, the rack drives the double-headed gear rod to rotate. When the double-headed gear rod rotates, it drives the bevel gear to rotate, thereby causing the rotating frame to rotate on the inner wall of the support frame. When the rotating frame rotates, the pressure roller at its bottom moves away from the surface of the pad, increasing the gap between the pressure roller and the pad. When the latch drives the core away from below the current pressure roller, the rotating frame is reset by the force of the torsion spring, thereby pressing and limiting the core on the surface of the pad, preventing the core from shifting position when moving on the surface of the pad, thus improving the calibration effect.

[0023] 3. In this measuring steel tape measure calibration device, when the limiting hole at the end of the tape measure body is limited by the latch, the limiting hole passes through the surface of the latch and is driven by the force of the coiling spring to roll up the core. During the winding process, the top of the wedge block is pressed, and the wedge block is subjected to the squeezing force, which drives the slide column to slide on the inner wall of the column cylinder. At the same time, the telescopic spring is squeezed. When the core is attached and fixed to the end of the latch, the external force on the wedge block disappears, and the telescopic spring applies a reverse force to the slide column, so that the wedge block at the end of the slide column limits the end of the tape measure body. The limiting of the wedge block can ensure that the latch does not fall off the limiting hole at the end of the tape measure body, thereby realizing the rapid winding of the core. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the mobile vehicle structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the fixed component structure of the present invention;

[0027] Figure 4 This is a schematic diagram of the pad structure of the present invention;

[0028] Figure 5 For the present invention Figure 4 Schematic diagram at point A;

[0029] Figure 6 This is a schematic diagram of the adjustment component structure of the present invention;

[0030] Figure 7 This is a schematic diagram of the moving track structure of the present invention;

[0031] Figure 8 This is a cross-sectional view of the adjustment component of the present invention.

[0032] The meanings of the labels in the diagram are as follows:

[0033] 100. Frame; 101. Moving rail; 102. Base plate; 103. Measuring tape body; 104. Support frame; 105. Through groove;

[0034] 200. Moving vehicle; 201. Connecting plate; 202. Clamping tongue; 203. Rack;

[0035] 300. Fixed assembly; 301. Motor; 302. Main gear; 303. Secondary gear; 304. Lead screw; 305. Clamping plate;

[0036] 400. Limiting assembly; 401. Rotating frame; 402. Pressure roller; 403. Bevel gear; 404. Double-ended gear rod; 405. Torsion spring;

[0037] 500. Adjustment component; 501. Cylinder; 502. Support plate; 503. Guide rod; 504. Column; 505. Sliding column; 506. Telescopic spring; 507. Wedge block. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0040] The purpose of this embodiment is to provide a calibration device for measuring steel tape measures. (See attached document.) Figures 1-8As shown, the device includes a frame 100, with movable rails 101 arranged symmetrically between the frame 100s. Each movable rail 101 has corresponding scale lines on its surface. Movable carts 200 are mounted on the side walls of the movable rails 101, moving horizontally along the side walls of the movable rails 101. Connecting plates 201 are located between the movable carts 200, with latches 202 on their surfaces. The latches 202 are used to limit the movement of the measuring tape body 103 at its end. Each movable rail 101 has a pad 102 on its surface, with through grooves 105 on its surface. The measuring tape body 103 is located on one side of the frame 100. The bottom of the measuring tape body 103 is provided with a fixing component 300, which is used to fix and limit the measuring tape body 103. The surface of the pad 102 is provided with a support frame 104, and the inside of the support frame 104 is provided with a limiting component 400. During the calibration of the measuring tape body 103, the limiting component 400 limits the stretched core of the measuring tape body 103, so that the core moves in contact with the surface of the pad 102. The lower part of the latch 202 is provided with an adjustment component 500, which is used to adjust the height of the latch 202 and to reinforce the latch 202 and the limiting hole at the end of the measuring tape body 103 during the movement.

[0041] During the calibration of the measuring tape body 103, instability of the measuring tape body 103 can lead to measurement deviations requiring recalibration. To improve calibration efficiency, the measuring tape body 103 needs to be fixed. Therefore, the fixing assembly 300 includes a motor 301 located below the measuring tape body 103. The output end of the motor 301 is provided with a main gear 302, and auxiliary gears 303 are provided on both sides of the main gear 302. A lead screw 304 is provided at the end of the auxiliary gears 303, and a clamping plate 305 is provided on the surface of the lead screw 304. The lead screw 304 rotates... The clamping plates 305 move relative to each other. By placing the measuring tape body 103 on the surface of the frame 100, the output end of the control motor 301 drives the main gear 302 to rotate. When the main gear 302 rotates, it drives the secondary gear 303 to mesh and rotate. When the secondary gear 303 rotates, it drives the lead screw 304 to rotate coaxially. The clamping plates 305 on the surface of the lead screw 304 move relative to each other, so that the clamping plates 305 move to the side wall of the measuring tape body 103 to clamp and fix it, thereby improving the stability of the measuring tape body 103 and thus improving the efficiency of the inspection.

[0042] When inspecting the core length of the measuring tape body 103, the core is thin and prone to deformation. During the tensile inspection process, the core is easily bent and shifted, affecting the accuracy of the inspection. Therefore, the top of the moving carriage 200 is provided with a rack 203, which moves on the surface of the pad 102 through the through groove 105. A limiting component 400 is provided on one side of the pad 102. The limiting component 400 includes a rotating frame 401 located inside the support frame 104. A support rod is provided on the side wall of the rotating frame 401, and the support rod rotates inside the support frame 104. A pressure roller 402 is provided at the bottom of the rotating frame 401, and a rubber pad is provided at the bottom of the pressure roller 402. The rubber pad is in contact with the surface of the pad 102. The moving rail 101... A gap is provided between the pads 102 on the surface. The gap width is smaller than the core width of the measuring tape body 103. When the core is pulled by the latch 202, it moves on the surface of the pad 102. The latch 202 fixes the end limiting hole of the measuring tape body 103. When the moving carriage 200 drives the latch 202 to move and stretch the core of the measuring tape body 103, the core moves on the surface of the pad 102. The top of the core is limited by the pressure roller 402. That is, when the core passes the bottom of the pressure roller 402, the pressure roller 402 becomes a rubber pad and presses and limits the top of the core, so that the core moves stably on the surface of the pad 102, avoiding bending during the calibration measurement of the core, thereby improving the accuracy of the calibration.

[0043] Considering that the rubber pad on the surface of the pressure roller 402 is in contact with the surface of the pad plate 102, when the latch 202 moves the core below the pressure roller 402, the core is easily stuck on the side wall of the pressure roller 402, causing deformation due to different force directions on the core. Therefore, a torsion spring 405 is provided between the support frame 104 and the support rod. The rotating frame 401 rotates inside the support frame 104. In its natural state, the rotating frame 401 is perpendicular to the horizontal plane under the force of the torsion spring 405. A bevel gear 403 is provided on the surface of the support rod. The measuring tape body 103 is equipped with a double-headed gear rod 404. When the moving carriage 200 moves the connecting plate 201, the rack 203 on the top of the moving carriage 200 drives the double-headed gear rod 404 to mesh and rotate, causing the bevel gear 403 above the double-headed gear rod 404 to rotate. When the bevel gear 403 rotates, it drives the rotating frame 401 to rotate, causing the core of the measuring tape body 103 to move below the pressure roller 402. When the rack 203 moves away from the double-headed gear rod 404, the rotating frame 401 is reset by the force of the torsion spring 405, and the pressure roller 402... The top of the core is compressed and limited. During the calibration and measurement of the core, the latch 202 engages with the limiting hole at the end of the core. The moving carriage 200 controls the horizontal movement of the latch 202 on the surface of the connecting plate 201. The latch 202 stretches the core. When the latch 202 moves below the support frame 104, the rack 203 drives the double-headed gear rod 404 to rotate. When the double-headed gear rod 404 rotates, it drives the bevel gear 403 to rotate, thereby causing the rotating frame 401 to rotate on the inner wall of the support frame 104. When the rotating frame 401 rotates, the pressure roller 402 at its bottom moves away from the surface of the pad 102, increasing the gap between the pressure roller 402 and the pad 102. As a result, the core can fit against the surface of the pad 102 and pass under the pressure roller 402. When the latch 202 moves the core away from the current pressure roller 402, the rotating frame 401 is reset by the force of the torsion spring 405, thereby pressing and limiting the core on the surface of the pad 102 with the pressure roller 402, preventing the core from shifting position when it moves on the surface of the pad 102, thus improving the inspection effect.

[0044] Considering the different dimensions of the measuring tape body 103 with different lengths of core, and to facilitate fixing the limiting holes at the ends of the measuring tape body 103 via the latch 202, thereby driving the core to stretch for inspection, the adjusting assembly 500 includes a support plate 502 located below the latch 202. Guide rods 503 are provided on both sides of the support plate 502 and between the support plate 502 and the connecting plate 201. A cylinder 501 is located at the bottom of the connecting plate 201. The cylinder 501 passes through the connecting plate 201 and pushes the support plate 502, causing the support plate 502 to move the latch 202 vertically, fixing the limiting holes at the ends of the measuring tape bodies 103 of different sizes. The latch 202 is shaped like a "7", and its width is smaller than that of the pad 102. The gap width formed between the control cylinder 501 and the piston rod at the end of the control cylinder 501 drives the latch 202 through the pad 102 and move it to the limiting hole at the end of the measuring tape body 103. When the height of the latch 202 needs to be adjusted, the piston rod at the end of the control cylinder 501 pushes the bottom of the support plate 502 to move, thereby adjusting the height of the latch 202 through the gap formed between the pad 102. This makes it easier to fix the limiting hole at the end of the measuring tape body 103 of different sizes. Since the wedge block 507 is shaped like a "7", when the latch 202 moves horizontally through the limiting hole at the end of the measuring tape body 103 for stretching, the end of the measuring tape body 103 can tightly fit the inner wall of the latch 202, thereby improving the stability of the stretching.

[0045] After the measuring tape body 103 is inspected, in order to quickly rewind the stretched core, the control carriage 200 drives the latch 202 to move rapidly in the opposite direction. During the movement of the latch 202, the sliding column 505 is prone to detaching from the end limiting hole of the measuring tape body 103, causing the core to bend and requiring manual adjustment and rewinding by the operator, affecting rewinding efficiency. Therefore, a column cylinder 504 is provided on one side of the latch 202, and a sliding column 505 is slidably mounted on the inner wall of the column cylinder 504. A telescopic spring 506 is provided between the column cylinder 504 and the sliding column 505, and a wedge block 507 is provided at the top of the sliding column 505. When the end limiting hole of the measuring tape body 103 is fixed to the surface of the latch 202, the end of the wedge block 507 is squeezed by the force of the coil spring inside the measuring tape body 103, causing the sliding column 505 at the bottom of the wedge block 507 to slide on the inner wall of the column cylinder 504, through the latch... When the measuring tape body 103 is limited by the end limiting hole, the limiting hole passes through the surface of the latch 202 and is driven by the force of the coiling spring to roll up the core. During the winding process, the top of the wedge block 507 is pressed. The wedge block 507 is subjected to the squeezing force, which drives the slide column 505 to slide on the inner wall of the cylinder 504. At the same time, the telescopic spring 506 is squeezed. When the core is attached and fixed to the end of the latch 202, the external force on the wedge block 507 disappears, and the telescopic spring 506 applies a reverse force to the slide column 505, so that the wedge block 507 at the end of the slide column 505 limits the end of the measuring tape body 103. When the inspection is completed, the control of the moving carriage 200 drives the latch 202 to move quickly in the opposite direction. The limiting by the wedge block 507 can ensure that the latch 202 does not fall off the limiting hole at the end of the measuring tape body 103, thereby realizing the rapid winding of the core.

[0046] In practical use, the measuring tape body 103 is placed on the surface of the frame 100. The output end of the control motor 301 drives the main gear 302 to rotate. When the main gear 302 rotates, it drives the secondary gear 303 to mesh and rotate. When the secondary gear 303 rotates, it drives the lead screw 304 to rotate coaxially. The clamping plate 305 on the surface of the lead screw 304 moves relative to each other, causing the clamping plate 305 to move to the side wall of the measuring tape body 103 to clamp and fix it, thereby improving the stability of the measuring tape body 103 and thus improving the efficiency of the inspection. The piston rod at the end of the control cylinder 501 drives the latch 202 to pass through the pad 102 and move to the end limiting hole of the measuring tape body 103. When it is necessary to adjust the height of the latch 202, the piston rod at the end of the control cylinder 501 pushes the bottom of the support plate 502 to move, thereby adjusting the height of the latch 202 through the gap formed between the pads 102. This facilitates fixing the end limiting hole of the measuring tape body 103 of different sizes.

[0047] The control vehicle 200 drives the latch 202 on the surface of the connecting plate 201 to move horizontally. The latch 202 stretches the core. When the latch 202 moves to below the support frame 104, the rack 203 drives the double-headed gear rod 404 to rotate. When the double-headed gear rod 404 rotates, it drives the bevel gear 403 to rotate, thereby causing the rotating frame 401 to rotate on the inner wall of the support frame 104. When the rotating frame 401 rotates, the pressure roller 402 at its bottom moves away from the surface of the pad 102, increasing the gap between the pressure roller 402 and the pad 102. Therefore, the core can adhere to the surface of the pad 102 and pass under the pressure roller 402. When the latch 202 drives the core away from the current pressure roller 402, the rotating frame 401 is reset by the force of the torsion spring 405, thereby pressing and limiting the core on the surface of the pad 102 by the pressure roller 402, preventing the core from shifting position when moving on the surface of the pad 102, thus improving the inspection effect.

[0048] When the latch 202 limits the end of the measuring tape body 103, the limiting hole passes through the surface of the latch 202 and is driven by the force of the coiling spring to roll up the core. During the winding process, the top of the wedge block 507 is pressed. The wedge block 507 is subjected to the squeezing force, which drives the slide column 505 to slide on the inner wall of the column cylinder 504. At the same time, the telescopic spring 506 is squeezed. When the core is attached and fixed to the end of the latch 202, the external force on the wedge block 507 disappears, and the telescopic spring 506 applies a reverse force to the slide column 505, so that the wedge block 507 at the end of the slide column 505 limits the end of the measuring tape body 103. When the inspection is completed, the control of the moving carriage 200 drives the latch 202 to move quickly in the opposite direction. The limiting of the wedge block 507 can ensure that the latch 202 and the limiting hole at the end of the measuring tape body 103 do not fall off, thereby realizing the rapid winding of the core.

[0049] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A surveying tape measure verification apparatus, characterized by: Including frame body (100), the mobile rail (101) is equipped between the frame body (100), the mobile rail (101) is symmetrically arranged, the mobile rail (101) surface is equipped with corresponding scale line, the mobile rail (101) side wall is equipped with mobile car (200), the mobile car (200) is moved in the mobile rail (101) side wall along horizontal direction, the connecting plate (201) is equipped between the mobile car (200), the connecting plate (201) surface is equipped with the latch (202), the latch (202) is used for limiting the end of the tape body (103) limit hole, the mobile rail (101) surface is equipped with the backing plate (102), the backing plate (102) surface is equipped with the through slot (105), one side of the frame body (100) is equipped with the tape body (103), the tape body (103) bottom is equipped with the fixed assembly (300), the fixed assembly (300) is used for the fixed limit of tape body (103), the backing plate (102) surface is equipped with the support frame (104), the support frame (104) inside is equipped with the limit assembly (400), during the process of checking the tape body (103), the limit assembly (400) is used for the limit of the tape core of tape body (103) stretch, makes the tape core adhere to the backing plate (102) surface movement, the limit assembly (400) includes the rotating frame (401) in the support frame (104) inside, the rotating frame (401) side wall is equipped with the support rod, and the support rod is rotated in the support frame (104) inside, the rotating frame (401) bottom is equipped with the compression roller (402), the compression roller (402) bottom is equipped with rubber pad, and the rubber pad is adhered to the backing plate (102) surface, the torsional spring (405) is equipped between the support frame (104) and the support rod, the rotating frame (401) is rotated in the support frame (104) inside, under natural state, the rotating frame (401) is perpendicular to the horizontal plane under the action of torsional spring (405) force, the bevel gear (403) is equipped on the support rod surface, the double-head gear rod (404) is equipped below the bevel gear (403), when the connecting plate (201) is moved by the mobile car (200), the rack (203) on the top of the mobile car (200) is driven to mesh and rotate the double-head gear rod (404), so that the bevel gear (403) above the double-head gear rod (404) is rotated, when the bevel gear (403) rotates, the rotating frame (401) is rotated, so that the tape core of the tape body (103) moves to the compression roller (402) below, when the rack (203) is away from the double-head gear rod (404), the rotating frame (401) is reset under the action of torsional spring (405) force, and the top of the tape core is extruded and limited by the compression roller (402). The card tongue (202) is provided below the adjusting assembly (500), and the adjusting assembly (500) is used for adjusting the height of the card tongue (202), and simultaneously reinforcing the position of the card tongue (202) and the end limiting hole of the tape body (103) during movement. The adjusting assembly (500) comprises a supporting plate (502) arranged below the card tongue (202), guide rods (503) arranged between the two sides of the supporting plate (502) and the connecting plate (201), and a pneumatic cylinder (501) arranged at the bottom of the connecting plate (201). The pneumatic cylinder (501) penetrates through the connecting plate (201) to push the supporting plate (502), so that the supporting plate (502) drives the card tongue (202) to move in the vertical direction, and the end limiting hole of the tape body (103) of different sizes is fixed.

2. The surveying tape check device of claim 1, wherein: The fixing assembly (300) comprises a motor (301) arranged below the tape body (103), a main gear (302) arranged at the output end of the motor (301), a pair of auxiliary gears (303) arranged at the two sides of the main gear (302), a screw rod (304) arranged at the end of the auxiliary gear (303), and a clamping plate (305) arranged on the surface of the screw rod (304). When the screw rod (304) rotates, the clamping plate (305) moves relatively.

3. The surveying tape rod calibrator of claim 1, wherein: The surface of the moving rail (101) is provided with spacers (102) with gaps therebetween, and the gap width is smaller than the width of the winding core of the tape body (103). When the winding core is subjected to the pulling force of the card tongue (202), the winding core moves on the surface of the spacer (102).

4. The surveying tape check device of claim 1, wherein: The top of the moving vehicle (200) is provided with a rack (203) which penetrates through the through slot (105) and moves on the surface of the spacer (102). The spacer (102) is provided with a limiting assembly (400) on one side.

5. The surveying tape check device of claim 1, wherein: The card tongue (202) is in the shape of "7". The width of the card tongue (202) is smaller than the gap width formed between the spacers (102). The end piston rod of the pneumatic cylinder (501) drives the card tongue (202) to penetrate through the spacers (102) and move to the position of the end limiting hole of the tape body (103).

6. The surveying tape check device of claim 5, wherein: The card tongue (202) is provided with a cylinder (504) on one side. A slide rod (505) is slidably arranged on the inner wall of the cylinder (504). An extension spring (506) is arranged between the cylinder (504) and the slide rod (505). A wedge-shaped block (507) is arranged at the top of the slide rod (505). When the end limiting hole of the tape body (103) is fixed on the surface of the card tongue (202), the wedge-shaped block (507) is pressed at the end by the action force of the internal winding spring of the tape body (103), so that the slide rod (505) arranged at the bottom of the wedge-shaped block (507) slides on the inner wall of the cylinder (504).

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