A vertical height measuring instrument and method of measurement

Abstract

The application discloses a vertical height measuring instrument and a measuring method, and relates to the field of surveying tools, which comprises a measuring plate, a supporting fixed plate, a hammer ball, a steel tape and a hammer ball rope, wherein the measuring plate comprises a reference plate, a reference attachment plate and a reference ruler; the supporting fixed plate comprises a fixed base plate, two racks are arranged on the opposite sides of the fixed base plate, a sliding plate is arranged between the two racks, first gears are arranged on the two sides of the sliding plate and are in meshing rotation with single racks, a control assembly is arranged on the sliding plate and is used for controlling the rotation state of the first gears, and the reference plate is connected with the sliding plate perpendicularly. The vertical height measuring instrument and the measuring method are simple and exquisite, have high measuring precision, are easy to operate and adjust, and are suitable for various terrains.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of surveying tools, and particularly relates to a vertical height measuring instrument and a measuring method. BACKGROUND

[0002] The description in this section is only provided for background information related to the present application disclosure, and does not constitute prior art.

[0003] The theodolite, total station and GPS are the main instruments for measurement work, and when measuring the height of a ground point, they often cannot obtain a more accurate result like the level and leveling, the main reason is that the height of the theodolite, total station, GPS base station antenna, prism and target cannot be accurately measured, and in order to accurately measure the height of the ground point by using the theodolite, total station and GPS, the height of the instrument, prism and target must be accurately obtained.

[0004] The prior art is an invention patent named TOOL FOR MEASURING VERTICAL HEIGHT, the invention patent disclosure number is US20220361771A1. The invention discloses a tool for measuring vertical height, having a first elongated member of a measuring tape; a handle connected to the first elongated member; and a second elongated member slidingly connected to the first elongated member, wherein the second elongated member includes a measuring window configured to facilitate reading of the measuring tape to indicate a length of the tool between an upper end of the first elongated member and a lower end of the second elongated member, wherein the handle is disposed between the measuring window and the lower end of the second elongated member when the tool is in a retracted position, and is configured to move the first elongated member relative to the second elongated member. The invention has low measuring accuracy.

[0005] It should be noted that the above introduction to the technical background is only for the convenience of clearly and completely describing the technical scheme of the present application, and for the convenience of understanding by those skilled in the art. The above technical scheme cannot be considered as known to those skilled in the art only because it is described in the background section of the present application. SUMMARY

[0006] The present application aims to provide a vertical height measuring instrument and a measuring method which are simple and ingenious, have high measuring accuracy, are easy to operate and adjust, and are suitable for various terrains.

[0007] The technical scheme adopted by the present application to achieve the above-mentioned purpose is as follows:

[0008] A vertical height measuring instrument, comprising a measuring plate, a support fixing plate, a hammer ball, a steel tape and a hammer ball rope, the measuring plate comprising a reference plate, a reference auxiliary plate and a reference ruler;

[0009] The support fixing plate comprises a fixing base plate, two racks are arranged on the opposite sides of the fixing base plate, a sliding plate is arranged between the two racks, first gears are arranged on the two sides of the sliding plate and meshed with the single racks, a control assembly is arranged on the sliding plate, and the control assembly is used for controlling the rotating state of the first gears.

[0010] The sliding plate can slide along the length direction of the fixing base plate, and the reference plate is connected with the sliding plate perpendicularly.

[0011] According to an embodiment of the present application, a circular level and a level tube are arranged on the upper surface of the reference plate, the reference plate and the reference auxiliary plate are connected by a built-in hinge at one end of the reference plate, the reference ruler is built in the reference auxiliary plate, the cross section of the reference ruler is trapezoidal, reference ruler fixing screws are symmetrically arranged on the two sides of the reference auxiliary plate, and the reference ruler fixing screws are used for fixing the position of the reference ruler.

[0012] According to an embodiment of the present application, a measuring plate fixing sleeve is arranged on one end of the reference plate close to the sliding plate, a measuring plate lifting micro-motion screw is arranged on the upper wall of the measuring plate fixing sleeve, a thimble is connected to the measuring plate lifting micro-motion screw, the thimble is in contact with the upper surface of the reference plate, and two embedded springs are arranged in the lower wall of the measuring plate fixing sleeve and in contact with the reference plate.

[0013] The reference plate is connected with the sliding plate perpendicularly through the measuring plate fixing sleeve.

[0014] The whole device is simple and compact, and is convenient to carry. When measuring, the whole instrument is assembled first, and according to the height of the measuring point from the ground, if the measuring point is higher than the bottom end of the support fixed plate, the measuring plate is placed in a horizontal position through the circular level (bubble centering), and the two side plates are placed on the measuring point away from the bottom surface of the one end of the support fixed plate, and the other end of the sliding plate is fixed through the control assembly, the measuring plate is adjusted to be accurate and horizontal by the lifting micro-spiral, and the height is accurately measured by a hammer ball and a steel tape; if the measuring point is lower than the bottom end of the support fixed plate or the measuring point is lower than the ground surface (h≤25cm), the reference attachment plate is used, the reference plate is rotated clockwise to a position perpendicular to the measuring plate by the built-in hinge, one end of the measuring attachment plate is placed on the measuring point, and the circular level bubble is centered by adjusting the measuring plate fixing screw, so that the measuring can be performed, and the other operation steps are the same as when the measuring point is higher than the bottom end of the support fixed plate; when the measuring point is lower than the ground surface (25cm≤h≤50cm), the reference ruler needs to be used, the measuring attachment plate is rotated, the reference ruler fixing screw is loosened, the reference ruler is pulled out to a suitable position, and then the reference ruler fixing screw is tightened to fix the reference ruler, and the other operation steps are the same as when the measuring point is higher than the bottom end of the support fixed plate. The whole device is less affected by external factors such as magnetic field and weather, and can basically adapt to the measurement of measuring points in various conditions; the measurement is convenient, efficient, accurate, reliable, and has small error, and the like, the theodolite, the horizontal axis center position of the total station, the prism and the sighting center position, and the GPS antenna position can provide more accurate measurement effect, and the precision can reach 0.1mm.

[0015] Through the setting of the support fixed plate, the two first gears on the sliding plate are respectively engaged with the two racks arranged opposite to the side surface of the fixed base plate, so that the sliding plate can displace along the horizontal direction of the fixed base plate. The rotation state of the first gear is controlled by the control assembly, and then the position of the sliding plate on the fixed base plate is adjusted. Since the reference plate is connected perpendicularly to the sliding plate, the position of the reference plate is adjusted by controlling the sliding plate. Through the above setting, during the adjustment of the position of the sliding plate, the sliding plate can be fixed at any position of the fixed base plate, and the design of the gear can improve the damping feeling and facilitate accurate control of the position, thereby improving the accuracy of the whole device. The use of the device can ensure that it is applied to different terrains and effectively ensure measurement accuracy through the perpendicular arrangement of the support fixed plate and the reference attachment plate. In addition, the vertical arrangement of the support fixed plate and the reference attachment plate can avoid or solve the shaking problem caused by single plate support. In addition, after the displacement of any plate body, the horizontal degree feedback and adjustment efficiency of the reference plate can be significantly improved.

[0016] By setting the measuring plate fixing sleeve, the lifting micro-motion screw is connected with the thimble, and there is a certain gap between the measuring plate fixing sleeve and the measuring plate, the thimble is driven to move up and down by rotating the lifting micro-motion screw, so as to fine tune the measuring plate, and the horizontal precision of the measuring plate is ensured; the lower wall of the measuring plate fixing sleeve is internally provided with two embedded springs in contact with the reference plate, which can ensure that the measuring plate fixing sleeve and the measuring plate maintain a certain gap, prevent the measuring plate fixing sleeve and the measuring plate from generating more friction or scratching, improve the accuracy of the overall instrument during use, and also facilitate the adjustment of the lifting micro-motion screw to the two side plates; on the other hand, the spring can effectively absorb the slight vibration or impact generated by the measuring plate during use, reduce the influence of the surrounding environment on the measurement, such as the slight vibration generated by the airflow flowing through the measuring plate.

[0017] Further, the lower end of the support fixing plate is provided with a plurality of tapered sharp corners. The plurality of tapered sharp corners provided at the lower end of the support fixing plate facilitate the insertion of the support fixing plate into the soil, can improve the stability of the support fixing plate, reduce or prevent the occurrence of deviation of the support fixing plate due to improper operation or external force factors during measurement, and improve the accuracy of experimental data.

[0018] Further, the overall device is made of stainless steel. The use of stainless steel can improve the service life of the overall device, and can also prevent or reduce the wear and tear of the parts during use.

[0019] According to an embodiment of the present application, the control assembly comprises a brake gear corresponding to the first gear pair, the brake gear is engaged with the two first gears to limit the rotation of the first gear, the brake gear is connected with a switching assembly, the switching assembly is used to rotate the brake gear around the rotation axis of the first gear in the state of keeping engagement with one first gear, so that the brake gear approaches or separates from the other first gear;

[0020] The switching assembly is arranged on the sliding plate.

[0021] The brake gear is engaged with the two first gears to limit the rotation of the first gear, i.e. a self-locking state is formed, the setting of the brake gear can ensure the braking effect of the sliding plate and improve the stability and precision of the overall device. At the same time, the switching assembly is used to rotate the brake gear around the rotation axis of the first gear in the state of keeping engagement with one first gear, i.e. the brake gear always keeps engagement with one first gear, and the switching assembly is used to rotate the axis of the brake gear around the axis of the first gear, so that the brake gear moves away from or approaches the other first gear to make the sliding plate slide or be fixed. In addition, the setting of the brake gear can improve the rotation resistance of the first gear, the resistance can improve the precision of the first gear during rotation, and thus is conducive to the improvement of the precision of the overall device.

[0022] According to an embodiment of the present application, the brake gear is the same as the first gear.

[0023] Through the setting that the brake gear is the same as the first gear, no matter the state of the first gear, the switching assembly can control the brake gear to engage with the two adjacent first gears, that is, the brake gear can ensure the sliding plate to brake no matter the position of the sliding plate on the fixed base plate.

[0024] According to an embodiment of the present application, the sliding plate is provided with a brake groove, and the brake gear is slidingly arranged in the brake groove, and the brake groove is used to define the movement route of the brake gear.

[0025] The brake groove arranged on the sliding plate can ensure the brake gear to move along the defined route, and can prevent the brake gear from deviating from the normal position, and can ensure the stability of the operation of the brake gear.

[0026] According to an embodiment of the present application, the switching assembly comprises a first rotating rod, one end of the first rotating rod is hingedly connected with one end of a second rotating rod, the other end of the second rotating rod is hingedly connected with one end of a third rotating rod, the other end of the third rotating rod is rotationally connected with the rotating shaft of the first gear, and the gear shaft of the brake gear is rotationally connected with the third rotating rod.

[0027] A first rotating shaft is vertically arranged in the middle of the first rotating rod, and the first rotating shaft is used to control the rotation of the first rotating rod around the first rotating shaft.

[0028] A vertical slot is arranged on the support fixed plate, and the first rotating shaft vertically penetrates through the vertical slot.

[0029] Through the setting of the switching assembly, the rotation of the first rotating rod can drive the third rotating rods at both ends to rotate in opposite directions around the rotating shafts of the linked first gears, the rotation of the first rotating rod is driven by the first rotating shaft, and the first rotating shaft vertically penetrates through the vertical slot, so that the operator can directly control the first rotating shaft to control the brake gear to approach or separate from another first gear, that is, to control the first rotating shaft to control the sliding plate. Through the setting of the switching assembly, the overall operation is simple and easy to operate.

[0030] According to an embodiment of the present application, the fixed screw end of the reference ruler is provided with a filler, the filler is hollowly arranged, and the surface of the filler is coarsely arranged.

[0031] Through the setting of the filler, the filler is a flexible material, which can prevent the reference ruler fixed screw from excessive friction or scratches with the side surface of the reference ruler, so as to avoid the problems such as the sliding jam between the reference ruler and the base floating plate caused by the existence of scratches and burrs; in addition, the filler can increase the surface area when being extruded, improve the friction force on the reference ruler, and prevent the reference ruler from retracting or other conditions.

[0032] The application also provides a vertical height measuring instrument measuring method, the steps of the measuring method comprising:

[0033] S1: first assemble a vertical height measuring instrument;

[0034] S2: keep the measuring plate approximately horizontal, and fix the position of the sliding plate by the control assembly with the other hand;

[0035] S3: adjust the measuring plate to make it accurate and horizontal;

[0036] S4: fix the end of the steel tape to the lower edge of the measuring plate, and put the steel tape into any narrow slot of the hammer ball, and the steel tape can be ensured to be vertical or directly measured by the hammer ball line,

[0037] S5: if the measuring point is higher than the bottom end of the support fixed plate, complete the measurement according to the steps S2-S4;

[0038] S6: if the measuring point is lower than the bottom end of the support fixed plate, the reference plate can be rotated down or the reference ruler can be pulled out according to the depth, and then the measurement is completed according to the steps S2-S4. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 It is a three-dimensional schematic view of a vertical height measuring instrument;

[0040] Figure 2 It is a schematic view of the combination state of a support fixed plate and a half-section sliding plate;

[0041] Figure 3 It is a schematic view of the combination state of another support fixed plate and a half-section sliding plate;

[0042] Figure 4 It is a schematic view of the back of the sliding plate;

[0043] Figure 5 It is a schematic view of the fixed sleeve of the measuring plate;

[0044] Figure 6 It is a schematic view of the section of the reference plate;

[0045] Figure 7 It is a schematic view of the measuring state of a vertical height measuring instrument;

[0046] Figure 8 It is a schematic view of the measuring state of another vertical height measuring instrument;

[0047] Figure 9 It is a schematic view of the measuring state of another vertical height measuring instrument;

[0048] Figure 10 It is a schematic view of the measuring state of another vertical height measuring instrument.

[0049] Reference numerals in the attached figures: Measuring plate 1, reference plate 10, circular level 101, level tube 102, built-in hinge 103, reference auxiliary plate 11, reference ruler 12, reference ruler fixing screw 13, filler 131, measuring plate fixing sleeve 14, lifting micro-adjustment screw 141, pin 142, embedded spring 143, fixing plate 2, vertical slot 201, fixing base plate 21, rack 211, sliding plate 22, first gear 221, brake groove 222, brake gear 231, first rotating rod 241, second rotating rod 242, third rotating rod 243, first rotating shaft 244, hammer ball 31, steel tape measure 32, hammer ball rope 33. Detailed Implementation

[0050] The technical solution of the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings:

[0051] Example 1:

[0052] like Figure 1 , 2 As shown in Figures 3, 4, and 5, a vertical height measuring instrument includes a measuring plate 1, a support and fixing plate 2, a hammer ball 31, a steel tape measure 32, and a hammer ball rope 33. The measuring plate 1 includes a reference plate 10, a reference auxiliary plate 11, and a reference ruler 12.

[0053] The support fixing plate 2 includes a fixing base plate 21. Two racks 211 are arranged facing each other on the side of the fixing base plate 21. A sliding plate 22 is arranged between the two racks 211. A first gear 221 that meshes with and rotates with a single rack 211 is arranged on both sides of the sliding plate 22. A control component is provided on the sliding plate 22. The control component is used to control the rotation state of the first gear 221.

[0054] The sliding plate 22 can slide along the length of the fixed base plate 21, and the reference plate 10 is perpendicularly connected to the sliding plate 22.

[0055] The upper surface of the reference plate 10 is provided with a circular level 101 and a level tube 102. The reference plate 10 and the reference attachment plate 11 are connected by a built-in hinge 103 at one end of the reference plate 10. The reference ruler 12 is built into the reference attachment plate 11. The cross section of the reference ruler 12 is trapezoidal. The reference attachment plate 11 is symmetrically provided with reference ruler fixing screws 13 on both sides. The reference ruler fixing screws 13 are used to fix the position of the reference ruler 12.

[0056] A measuring plate fixing sleeve 14 is fitted on one end of the reference plate 10 near the sliding plate 22. A lifting micro-screw 141 is provided on the upper wall of the measuring plate fixing sleeve 14. A pin 142 is connected to the lifting micro-screw 141. The pin 142 contacts the upper surface of the reference plate 10. Two embedded springs 143 are inside the lower wall of the measuring plate fixing sleeve 14 and contact the reference plate 10.

[0057] The reference plate 10 is connected perpendicularly with the sliding plate 22 through the measuring plate fixing sleeve 14.

[0058] Through the design of the whole device, the measuring plate 1 is composed of the reference plate 10, the reference auxiliary plate 11 and the reference ruler 12, which are independent of each other and combined together, so that the whole device is simple, compact and convenient to carry. When measuring, the whole instrument is assembled first, and according to the height of the measuring point from the ground, if the measuring point is higher than the bottom end of the support fixed plate 2, as shown in Figure 7 , 8 , the measuring plate 1 is placed in a horizontal position by the central bubble of the circular level, and the two side plates are placed on the measuring point away from the bottom surface of one end of the support fixed plate 2, and the other end connected sliding plate 22 is fixed by the control assembly, the lifting micro-drive screw 141 is adjusted to make the measuring plate 1 accurate, and the height can be accurately measured with the help of a hammer ball 31 and a steel tape 32; as shown in Figure 9 , if the measuring point is lower than the bottom end of the support fixed plate 2 or the measuring point is lower than the ground surface h≤25cm, the reference auxiliary plate 11 is enabled, the reference plate 10 is rotated clockwise by the built-in hinge 103 to the position perpendicular to the measuring plate 1, one end of the measuring auxiliary plate is placed on the measuring point, the circular level bubble is adjusted to the center, and the measuring can be measured, and the other operation steps are the same as when the measuring point is higher than the bottom end of the support fixed plate 2; as shown in Figure 10 , when the measuring point is lower than the ground surface 25cm≤h≤50cm, the reference ruler 12 needs to be enabled, the measuring auxiliary plate is rotated, the reference ruler fixing screw 13 is loosened, the reference ruler 12 is pulled out to the appropriate position, and then the reference ruler fixing screw 13 is tightened to fix the reference ruler 12, and the other operation steps are the same as when the measuring point is higher than the bottom end of the support fixed plate 2. The whole device is less affected by external factors such as magnetic field and weather, and can basically adapt to the measurement of measuring points in various conditions; the measurement is convenient and efficient, the precision is reliable, the error is small, and the like, the theodolite, the total station instrument horizontal axis center position, the prism and the sighting center position, the GPS antenna position can provide more accurate measurement effect, and the precision can reach 0.1mm.

[0059] By setting the support fixed plate 2, the two first gears 221 on the sliding plate 22 are respectively engaged with the two racks 211 arranged on the side of the fixed base plate 21, so that the sliding plate 22 can be displaced horizontally along the fixed base plate 21, and the position of the sliding plate 22 on the fixed base plate 21 is adjusted by controlling the rotating state of the first gear 221 by the control assembly. Since the reference plate 10 is connected perpendicularly to the sliding plate 22, the position of the reference plate is adjusted by controlling the sliding plate 22. Through the above setting, during the adjustment of the position of the sliding plate, the sliding plate 22 can be fixed at any position along the fixed base plate 21, and the design of the gear can improve the damping feeling and facilitate accurate control of the position, thereby improving the accuracy of the whole device. The use of the device can ensure the application in different terrains and effectively ensure the measurement accuracy through the vertical arrangement of the support fixed plate 2 and the reference attachment plate 11; and the vertical arrangement of the support fixed plate 2 and the reference attachment plate 11 can avoid or solve the shaking problem caused by single plate support. In addition, after the displacement of any plate, the levelness feedback and adjustment efficiency of the reference plate 10 can be significantly improved.

[0060] By setting the measuring plate fixing sleeve 14, the lifting micro-motion screw 141 is connected with the thimble 142, and there is a certain gap between the measuring plate fixing sleeve 14 and the measuring plate 1. The lifting micro-motion screw 141 drives the thimble 142 to move up and down to fine-tune the measuring plate 1, thereby ensuring the horizontal accuracy of the measuring plate 1. The lower wall of the measuring plate fixing sleeve 14 has two embedded springs 143 in contact with the reference plate 10. On the one hand, it can ensure that the measuring plate fixing sleeve and the measuring plate maintain a certain gap to prevent excessive friction or scratching between the measuring plate fixing sleeve 14 and the measuring plate 1, thereby improving the accuracy of the whole instrument during use and facilitating the adjustment of the lifting micro-motion screw 141 to the two side plates. On the other hand, the spring 143 can effectively absorb the slight vibration or impact of the measuring plate 1 during use, thereby reducing the influence of the surrounding environment on the measurement, such as the slight vibration caused by airflow flowing through the measuring plate.

[0061] Further, the sliding plate 22 is provided with a mounting plate on one side of the first gear 221, and the mounting plate is used for protecting the first gear 221 and the control assembly, and the mounting plate is used for connecting with the reference plate 10. Further, the mounting plate on the sliding plate 22 is used for connecting with the measuring plate fixing sleeve 14 perpendicularly.

[0062] Further, the lower end of the support fixed plate 2 is provided with a plurality of tapered sharp corners. The plurality of tapered sharp corners at the lower end of the support fixed plate 2 can facilitate the insertion of the support fixed plate 2 into the soil, thereby improving the stability of the support fixed plate 2 and reducing or preventing the deviation of the support fixed plate 2 caused by improper operation or external factors during measurement, thereby improving the accuracy of experimental data.

[0063] Further, the overall device material adopts stainless steel texture material. The adoption of stainless steel texture material can improve the service life of the overall device, and can prevent or reduce the wear or loss of parts during use.

[0064] The control assembly comprises a brake gear 231 corresponding to the first gear 221, the brake gear 231 is arranged to limit the rotation of the first gear 221 by engaging with two first gears 221, the brake gear 231 is connected with a switching assembly, the switching assembly is used to rotate the brake gear 231 around the rotation axis of the first gear 221 in the state of keeping engagement with one first gear 221, so as to make the brake gear 231 approach or separate from another first gear 221;

[0065] The switching assembly is arranged on the sliding plate 22.

[0066] The brake gear 231 is arranged to limit the rotation of the first gear 221 by engaging with two first gears 221, that is, to form a self-locking state, which can ensure the braking effect of the sliding plate 22 and improve the stability and precision of the overall device. At the same time, the switching assembly is used to rotate the brake gear 231 around the rotation axis of the first gear 221 in the state of keeping engagement with one first gear 221, that is, the brake gear 231 always keeps engagement with one first gear 221, and the switching assembly is used to rotate the axis of the brake gear 231 around the axis of the first gear 221, so as to make the brake gear 231 away from or close to another first gear 221 to make the sliding plate 22 slide or fix. In addition, the arrangement of the brake gear 231 can improve the rotation resistance of the first gear 221, which can improve the precision of the first gear 221 during rotation, thereby being conducive to improving the precision of the overall device.

[0067] The brake gear 231 is the same as the first gear 221.

[0068] Through the same arrangement of the brake gear 231 and the first gear 221, no matter what state the first gear 221 is in, the switching assembly can control the brake gear 231 to engage with the two adjacent first gears 221, that is, it can ensure the braking of the sliding plate 22 no matter what position the sliding plate 22 is in on the fixed base plate 21.

[0069] The sliding plate 22 is provided with a brake groove 222, and the brake gear 231 is slidingly arranged in the brake groove 222, and the brake groove 222 is used to define the movement route of the brake gear 231.

[0070] The brake groove 222 is arranged on the sliding plate 22 to ensure that the brake gear 231 moves along the specified route, and can prevent the brake gear 231 from deviating from the normal position, and can ensure the stability of the operation of the brake gear 231.

[0071] The switching assembly comprises a first rotating rod 241, the ends of the first rotating rod 241 are hingedly connected to one end of a second rotating rod 242, the other end of the second rotating rod 242 is hingedly connected to one end of a third rotating rod 243, the other end of the third rotating rod 243 is rotationally connected to a rotating shaft of the first gear 221, and a gear shaft of the brake gear 231 is rotationally connected to the third rotating rod 243;

[0072] A first rotating shaft 244 is vertically arranged in the middle of the first rotating rod 241, and the first rotating shaft 244 is used for controlling the rotation of the first rotating rod 241 around the first rotating shaft 244;

[0073] The support fixing plate 2 is provided with a vertical slot 201, and the first rotating shaft 244 vertically penetrates the vertical slot 201.

[0074] Through the setting of the switching assembly, the rotation of the first rotating rod 241 can drive the third rotating rods 243 at both ends to rotate in opposite directions around the rotating shafts of the first gears 221 connected thereto, the rotation of the first rotating rod 241 is driven by the first rotating shaft 244, and the first rotating shaft 244 vertically penetrates the vertical slot 201, so that the operator can control the brake gear 231 to approach or separate from the other first gear 221 by directly controlling the first rotating shaft 244, that is, the first rotating shaft 244 controls the sliding plate 22. Through the setting of the switching assembly, the overall operation is simple and easy to operate, and can be operated with one hand, and the overall precision can be improved by single-handed operation.

[0075] The end of the reference ruler fixing screw 13 is provided with a filler 131, the filler 131 is hollow, and the surface of the filler 131 is rough.

[0076] Through the setting of the filler 131, the filler 131 is a flexible material, which can prevent excessive friction or scratches between the reference ruler fixing screw 13 and the side surface of the reference ruler 12, so as to avoid problems such as sliding jam between the reference ruler 12 and the base floating plate caused by the existence of scratches and burrs; in addition, the filler 131 can increase the surface area when being extruded, improve the friction force on the reference ruler 12, and prevent the reference ruler 12 from retracting or other situations.

[0077] The application also provides a vertical height measuring instrument measuring method, and the steps of the measuring method comprise:

[0078] S1: first, assemble a vertical height measuring instrument;

[0079] S2: keep the measuring plate 1 substantially horizontal, and fix the position of the sliding plate 22 by controlling the assembly with the other hand;

[0080] S3: adjust the measuring plate 1 to make the measuring plate 1 accurate and horizontal;

[0081] S4: The end of the steel tape 32 is fixed to the lower edge of the measuring plate 1, and the steel tape 32 is placed in any one of the narrow grooves of the hammer ball 31, and the vertical measurement can be ensured by tightly abutting the hammer ball rope 33, or the measurement can be directly performed by tightly abutting the hammer ball line rope 33,

[0082] S5: If the measurement point is higher than the height of the ground, the measurement is completed according to the steps S2-S4;

[0083] S6: If the measurement point is lower than the ground, the reference attachment plate 11 can be rotated down according to the depth, or the reference ruler 12 can be pulled out, and the measurement is completed according to the steps S2-S4.

[0084] Embodiment 2:

[0085] Embodiment 2 is another vertical height measuring instrument according to the present application, which is different from embodiment 1 in that:

[0086] The reference ruler 12 is provided with an inner groove or an outer convex point on the side surface. Through the arrangement of the reference ruler 12, the inner groove or the outer convex point is used to increase the contact area with the fixed screw end 13 part of the reference ruler, and the inner groove or the outer convex point is used to reduce the damage to the ruler body.

[0087] Embodiment 3:

[0088] Figure 6 Another vertical height measuring instrument according to the present application is schematically shown, which is different from embodiment 1 in that:

[0089] The filler 131 is hollowly arranged, the filler 131 is provided with a bending piece in the middle, and the filler 131 is open at the opening end of the reference ruler 12. The hollowly arranged filler 131 has a larger contact area after being extruded, which is more conducive to protecting the ruler body, and has an opening arrangement, which can generate an adsorption force to the side of the ruler body after being extruded, which is conducive to the stability of the reference ruler 12. Through the above structure, the position of the reference ruler 12 can be effectively ensured to be fixed compared with the reference attachment plate 11, and the problem that the reference ruler 12 is damaged due to the excessive concentration of the contact stress of the fixed screw 13 of the reference ruler 12 compared with the reference ruler 12 can be avoided. The stress points are dispersed by the filler 131.

[0090] The above embodiments have been described in detail, and it should be understood that the above embodiments are only specific embodiments of the present application, and are not used to limit the present application. Any modification, supplement or similar replacement within the principle range of the present application should be included in the protection range of the present application.

Claims

1. A vertical height measuring instrument, comprising a measuring plate (1), a supporting fixed plate (2), a hammer ball (31), a steel tape (32) and a hammer ball rope (33), wherein the measuring plate (1) comprises a reference plate (10), a reference attachment plate (11) and a reference ruler (12); the supporting fixed plate (2) comprises a fixed base plate (21), two racks (211) are arranged on the opposite sides of the fixed base plate (21), a sliding plate (22) is arranged between the two racks (211), first gears (221) are arranged on the two sides of the sliding plate (22) and are engaged with the single rack (211) to rotate, a control assembly is arranged on the sliding plate (22) and is used for controlling the rotating state of the first gear (221), the control assembly comprises a brake gear (231) arranged correspondingly with the first gear (221), the brake gear (231) is engaged with the two first gears (221) to limit the rotation of the first gear (221), the brake gear (231) is connected with a switching assembly, the switching assembly is used for rotating the brake gear (231) around the rotating shaft of the first gear (221) in the state of keeping engagement with one of the first gears (221), so that the brake gear (231) is close to or separated from the other first gear (221); the sliding plate (22) can slide along the length direction of the fixed base plate (21), and the reference plate (10) is vertically connected with the sliding plate (22). characterized in that The switching assembly is arranged on the sliding plate (22). The brake gear (231) is the same as the first gear (221).

2. The vertical height measuring instrument according to claim 1, wherein A brake groove (222) is arranged on the sliding plate (22), the brake gear (231) is slidably arranged in the brake groove (222), and the brake groove (222) is used for defining the movement route of the brake gear (231).

3. The vertical height measuring instrument according to claim 2, wherein The switching assembly comprises a first rotating rod (241), one end of the second rotating rod (242) is hingedly connected to the end of the first rotating rod (241), the other end of the second rotating rod (242) is hingedly connected to one end of the third rotating rod (243), the other end of the third rotating rod (243) is rotatably connected to the rotating shaft of the first gear (221), and the gear shaft of the brake gear (231) is rotatably connected to the third rotating rod (243).

4. The vertical height measuring instrument according to claim 2, wherein A first rotating shaft (244) is vertically arranged in the middle of the first rotating rod (241), and the first rotating shaft (244) is used for controlling the rotation of the first rotating rod (241) around the first rotating shaft (244).

5. The vertical height measuring instrument according to claim 4, wherein A vertical slot (201) is arranged on the supporting fixed plate (2), and the first rotating shaft (244) vertically penetrates the vertical slot (201). ​ ​ 6. The vertical height measuring instrument according to claim 1, wherein The reference plate (10) upper surface is provided with a circular level (101) and a level tube (102), the reference plate (10) and the reference plate (11) are connected by the built-in hinge (103) at one end of the reference plate (10), the reference ruler (12) is built in the reference plate (11), the reference ruler (12) cross section is trapezoidal, the reference plate (11) both sides are symmetrically provided with reference ruler fixing screw (13), the reference ruler fixing screw (13) is used for fixing the position of the reference ruler (12).

7. The vertical height gauge of claim 6, wherein, The reference plate (10) is provided with a measuring plate fixing sleeve (14) near one end of the sliding plate (22), the upper wall of the measuring plate fixing sleeve (14) is provided with a lifting micro-motion screw (141), the lifting micro-motion screw (141) is connected with a thimble (142), the thimble (142) is in contact with the upper surface of the reference plate (10), the lower wall of the measuring plate fixing sleeve (14) is provided with two embedded springs (143) in contact with the reference plate (10); The reference plate (10) is connected with the sliding plate (22) vertically through the measuring plate fixing sleeve (14).

8. The vertical height measuring instrument according to claim 6, wherein The reference ruler fixing screw (13) is provided with a filler (131), the filler (131) is hollow, and the surface of the filler (131) is rough.

9. A vertical height measurement method, characterized by, The vertical height measuring instrument of any one of claims 1-8 is used, and the measuring method comprises the following steps: S1: first, the vertical height measuring instrument is assembled; S2: keep the measuring plate (1) substantially horizontal, and fix the position of the sliding plate (22) by controlling the assembly with the other hand; S3: adjust the measuring plate (1) to make the measuring plate (1) accurate and horizontal; S4: fix the end of the steel tape (32) to the lower edge of the measuring plate (1), and put the steel tape (32) into any one of the narrow slots of the hammer ball (31), which is in close contact with the hammer ball rope (33) to ensure vertical measurement, or in close contact with the hammer ball rope (33) to directly measure, S5: if the measurement point is higher than the height of the ground, complete the measurement according to steps S2-S4; S6: if the measurement point is lower than the ground, the reference plate (11) can be rotated down or the reference ruler (12) can be pulled out according to the depth, and then the measurement is completed according to steps S2-S4.

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