Fixing device for guaranteeing verticality of box staff

Abstract

The invention relates to the technical field of building measuring tools, in particular to a fixing device capable of guaranteeing verticality of a box staff, which comprises a lower fixer, an upper fixer, two connecting rods, a locking bolt and a positioning bolt, the lower fixer is mounted on a box staff fixing part, the upper fixer is mounted on a box staff telescopic part, the connecting rods are made of stainless steel pipes with the thickness of 1mm, and the locking bolt is mounted on the lower fixer. The fixing device has a basic length of 200mm and an adjustable part, and holes with the diameter of 5mm are reserved at two ends of the fixing device and are used for connecting a connecting rod. During use, the length of the connecting rod is adjusted according to the size of the box staff, the device and the box staff are fixed through the locking bolt, and the upper and lower fixers are connected through the connecting rod. The device is made of hard plastic and stainless steel materials, is small in deformation and can be repeatedly turned over; the locking bolt adapts to box staff with different widths, the structure is simple, operation is convenient and fast, stability is good, a tripod is not needed to assist in erecting the staff, the influence of box staff deflection is effectively weakened, measurement precision is improved, and economical efficiency and practicability are both achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building surveying tools, in particular to a fixing device for ensuring the verticality of a tower staff. BACKGROUND

[0002] In the construction engineering surveying and setting-out construction, the leveling survey is a key link to guarantee the construction precision, and the tower staff, as the core tool of the leveling survey, directly affects the accuracy of the measurement results in the use stability. The tower staff is usually made of light and high-strength materials such as aluminum alloy, and has a tower-like retractable structure, and the single elevation measurement range can reach 5m. When in use, it can be flexibly pulled out and retracted for carrying, and due to its strong convenience, it is widely used in various building surveying scenes.

[0003] The existing tower staff is mostly designed in a rectangular pull-out type, and each time a section is pulled out, it is positioned by a snap spring. However, in the long-term repeated pulling and using process, the pulling connection of the tower staff and the positioning of the snap spring are prone to wear. This wear will cause a connection gap between the upper and lower sections of the tower staff, and further cause the tower staff to be inclined, so that the verticality of the tower staff needs to be manually corrected multiple times during the measurement process to meet the accuracy requirements. This not only increases the workload of the measurement operation, but also may cause measurement errors due to untimely or inaccurate correction, affecting the quality of the construction.

[0004] In order to solve the problem of the inclination of the tower staff, the existing technology has attempted to use a fixed connector to reinforce the connection of the tower staff, but this type of scheme has obvious defects. When the tower staff needs to be pulled out completely for long-distance measurement, a fixed connector needs to be installed at the connection of each two sections of the tower staff, which greatly increases the overall weight of the tower staff. When the staff is erected, it must be assisted by a leveling staff and a tripod to maintain stability, which not only reduces the flexibility and efficiency of the measurement operation, but also increases the cost of carrying equipment, and is difficult to adapt to the complex and variable working environment of the construction site.

[0005] Therefore, in view of the problems of the existing tower staff that the measurement accuracy is affected by the inclination due to wear during use, and the existing fixing scheme that the staff body is too heavy and inconvenient to operate, there is an urgent need for a fixing device with simple structure, light weight and strong adaptability to reduce the influence of the inclination of the tower staff on the measurement accuracy and improve the efficiency and convenience of the building surveying operation. SUMMARY

[0006] The present application relates to the technical field of building surveying tools, in particular to a fixing device for ensuring the verticality of a tower staff.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical scheme: The utility model provides a kind of fixed device that ensures tower ruler perpendicularity, including connecting rod and two groups of fixers, the two groups of fixers are respectively lower fixer and upper fixer, the lower fixer is used to detachably install in tower ruler fixed part, the upper fixer is used to detachably install in tower ruler telescopic part; The corresponding position of the lower fixer and the upper fixer is provided with a through hole, the both ends of the connecting rod are movably arranged in the through hole of the lower fixer and the upper fixer respectively, and the lower fixer and the upper fixer are provided with locking bolts, the locking bolts are arranged along the radial direction of the fixer and are used for locking and fixing the fixer and the tower ruler, the connecting rod is of sectional telescopic structure, and the length thereof is adaptively adjusted according to the relative position of the tower ruler fixed part and the tower ruler telescopic part to limit the tower ruler telescopic part from being deflected relative to the tower ruler fixed part.

[0008] Preferably, the connecting rod is made of a stainless steel pipe with a diameter of 1 mm and a wall thickness δ ∈ [0.1 mm, 0.2 mm], and the tensile strength thereof satisfies the following checking formula: ; Wherein, σ is the actual tensile strength of the connecting rod, F max is the maximum lateral load borne by the connecting rod during the measurement of the tower ruler, and the value range is 50 N-100 N, d is the outer diameter of the stainless steel pipe, and δ is the wall thickness of the stainless steel pipe. The formula ensures the stiffness and deformation resistance of the connecting structure to avoid the deflection of the tower ruler due to the deformation of the connecting rod under stress.

[0009] Preferably, the inner diameter D of the through hole is 5 mm, the inner wall of the through hole is provided with a smooth wear-resistant coating, the coating thickness t is 0.05-0.1 mm, and the actual fitting gap δ actual of the through hole and the end of the connecting rod satisfies the following calculation formula: ; Wherein, d is the nominal outer diameter of the connecting rod. The formula precisely controls the fitting accuracy, realizes the flexible assembly of the connecting rod and the fixer, and avoids the radial movement of the tower ruler caused by excessive gap.

[0010] Preferably, the total length of the connecting rod satisfies the following calculation formula: L=L0+ΔL, wherein L is the actual working length of the connecting rod, L0 is the basic length of the connecting rod, and is fixed at 200 mm, ΔL is the adjustable length of the connecting rod, ΔL ∈ [0 mm, 150 mm], and the adjustment step value of ΔL is 1 mm, which can be accurately matched by the actual telescopic amount of the tower ruler.

[0011] As preferred, the adjustable length ΔL of the connecting rod and the extracted length H of the tower tape telescopic part satisfy the following fitting relationship: ΔL=k×H; wherein k is the fitting coefficient, k∈[0.8,1.2], which is determined by the segment length of the tower tape and the connecting gap through on-site calibration, and ensures the limiting effect of the connecting rod on the tower tape deflection.

[0012] As preferred, the main body structure of the lower and upper fixators is injection molded by hard plastic material, the bending elastic modulus of the hard plastic material is 2.5-3.5 GPa, and the elongation at break is not less than 5%, which effectively reduces the overall weight of the device and reduces plastic deformation during use.

[0013] As preferred, it further comprises a positioning bolt vertically penetrating the side wall of the hole and threadedly connected with the hole, and the end of the positioning bolt is provided with an elastic pressure head, the elastic modulus E of the elastic pressure head is ∈[2 GPa, 5 GPa], and when the length of the connecting rod is adjusted in place, the locking pressure generated by tightening the positioning bolt needs to satisfy the following formula: ; ; Wherein, F is the locking pressure of the elastic pressure head on the connecting rod, A is the pressure area of the elastic pressure head, A ∈[2mm 2 , 5mm 2 ], ΔL is the compression amount of the elastic pressure head, ΔL ∈[0.1mm, 0.3mm], L h is the effective working length of the elastic pressure head, L h ∈[5mm, 10mm]; M is the locking torque of the positioning bolt, r is the thread pitch diameter of the positioning bolt, r ∈[1.5mm, 2mm], f is the friction coefficient between the elastic pressure head and the connecting rod, f ∈[0.3, 0.5], and F≥30N is ensured, which ensures the axial positioning and locking of the connecting rod and the fixator through the double formula, and prevents the connecting rod from moving during measurement.

[0014] As preferred, the number of locking bolts arranged on each fixator is two, the two locking bolts are symmetrically distributed on the two sides of the fixator, the axis of the locking bolt is perpendicular to the side wall of the tower tape, and the included angle θ=90°, the thread specification of the locking bolt is M4×8, and the locking force and the tightening torque satisfy the following relationship: ; ; Wherein, F total is the total locking force of the two locking bolts on the tower tape, F singleFor the locking force of a single locking bolt, cos theta = 1; M is the tightening torque of a single locking bolt, control, M belongs to [5N.m, 8N.m], d2 is the M4 thread diameter, d2 = 3.45mm, lambda is the thread lead angle, the lead angle of M4*8 is approximately 3.39 degrees, rho' is the equivalent friction angle of the thread, the value of rho' belongs to [6 degrees, 8 degrees], and the locking force between the fixture and the tower scale is ensured to be uniform and stable through the formula, and the tower scale of different widths is adapted.

[0015] As preferred, the number of the connecting rods is two, the two connecting rods are parallel and symmetrically arranged on both sides of the tower scale, and the length adjustment synchronization error of the two connecting rods needs to meet the following formula: ; Wherein, delta L error is the length synchronization error of the two connecting rods, L1 and L2 are the actual working lengths of the two connecting rods respectively, k = 0.5 * 10 -3 m / m is the error coefficient, H is the extracted length of the tower scale telescopic part, H belongs to [0mm, 3000mm], and it is guaranteed that delta L error <= 0.5mm, the synchronization error is strictly controlled through the formula, the coaxiality of the tower scale fixed part and the tower scale telescopic part is further improved through the double-sided symmetric support structure, and the deflection caused by single-sided stress is avoided.

[0016] As preferred, the inner side surface of the lower fixture and the upper fixture in contact with the tower scale is provided with an anti-skid pad layer, the anti-skid pad layer is made of rubber material, the Shore hardness thereof is 65-75HA, the surface of the anti-skid pad layer is provided with a rhombic anti-skid pattern, the pattern depth is 0.3-0.5mm, which is used for increasing the static friction force between the fixture and the tower scale, and preventing the fixture from sliding transversely relative to the tower scale.

[0017] Compared with the prior art, the beneficial effects of the present application are: The tower scale perpendicularity fixing device of the present application effectively solves the pain points of frequent deflection and poor adaptability in traditional tower scale measurement through scientific structure layout and material selection. The lower fixture and the upper fixture are made of hard plastic material, which not only ensures the structural strength and reduces plastic deformation during use, but also greatly reduces the overall weight of the device. The tower scale can be stabilized without the help of a leveling rod and a tripod, and it is more convenient to carry and operate. The connecting rods are made of 1mm thick stainless steel pipes, which have high material strength and strong anti-deformation ability. The two symmetrically distributed structures cooperate with the 5mm diameter hole reserved at both ends of the fixture to form a double-sided symmetric support, accurately limit the deflection of the tower scale telescopic part relative to the tower scale fixed part, and significantly improve the measurement accuracy. At the same time, the lower fixture and the upper fixture are provided with locking bolts, which can flexibly adapt to tower scales of different widths through the symmetric locking structure, without the need to customize special fixtures for specific tower scales, and the adaptation range is wide, which is more practical.

[0018] The structural form of the present application is simple and intuitive, the operation process is clear and easy to understand, and the assembly and use can be completed without complex professional skills: only the adjustable length of the connecting rod needs to be adjusted according to the actual tower size, then the fixer is locked with the tower by the locking bolt, and finally the connecting rod is connected through the hole of the opening to connect the upper and lower fixers. The whole assembly is efficient and fast, which can reduce the preparation time before on-site measurement. In addition, the durability and economic advantage of each part of the device are remarkable: the stainless steel material of the connecting rod and the hard plastic material of the fixer have good anti-wear performance, and are not easy to deform and damage after long-term use, and can be used repeatedly. The setting of the positioning bolt further strengthens the connection stability of the connecting rod and the fixer, avoids the movement or loosening during the measurement process, and prolongs the service life of the whole device. At the same time, the device does not need additional auxiliary equipment, the part processing technology is simple and the cost is controllable, which can reduce the equipment investment and use cost in building measurement construction, and has good practicability and economy. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, and together with the embodiments of the present application, make a further detailed explanation, but do not constitute a limitation to the present application.

[0020] Figure 1 It is a top view structural schematic diagram of the present application; Figure 2 It is a cross-sectional structural schematic diagram of the present application. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be described below, and obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0022] Embodiment 1 I. Implementation scenario adaptation This embodiment is specially adapted to the rectangular pull-out type aluminum alloy tower commonly used in building measurement construction (length 5m, single section width 80-120mm), which is suitable for building measurement and line laying scenes such as Huangbuling area shantytown reconstruction project, and can be directly assembled on the tower fixed part 5 and the tower telescopic part 6, solving the problem of upper and lower section deflection caused by wear at the tower pull-out part and the snap spring part, without the need for additional three-legged stand auxiliary stand. It takes into account the measurement accuracy and operation convenience.

[0023] II. Component composition and processing implementation (I) Core components and material selection Connecting rod 4: made of 304 stainless steel pipe, nominal outer diameter 1 mm, wall thickness 0.15 mm, both to ensure structural stiffness and control the overall weight. The number of connecting rods 4 is two, each length is divided into basic length and adjustable length two parts, the basic length is fixed at 200 mm, the adjustable length can be flexibly adjusted according to the extension amount of the tower ruler, to meet the different measurement spacing requirements. The two ends of the connecting rod 4 are polished and polished to remove burrs and corners to avoid scratching other parts during assembly.

[0024] The total length calculation formula of the connecting rod 4 is L=L0+ΔL=200mm+120mm=320mm (where L0 is the basic length 200mm, ΔL is the adjustable length, and the value is 120mm according to the tower ruler extraction 120mm.

[0025] The tensile strength checking formula of the connecting rod 4 is: ; ; Where F max is the maximum lateral load 80N during measurement, d is the nominal outer diameter 1mm, δ is the wall thickness 0.15mm, which meets the anti-deformation requirement.

[0026] 2, the lower fixed device 1 and the upper fixed device 2: the main body is made of hard plastic material injection molding, the bending elastic modulus of this material is 3.0GPa, the elongation at break is 6%, the deformation is small and the weight is light, which is convenient for carrying and turnover. The lower fixed device 1 and the upper fixed device 2 are designed as U-shaped clamping structure, the opening width is adapted to different width tower ruler, two ends are symmetrically reserved through hole 7, which is used for connecting rod 4 to realize the stable connection of upper and lower fixed device; the inner wall of the fixed device U-shaped groove is reserved with threaded hole, which is used for installing locking bolt 3.

[0027] 3, hole 7: according to the design requirements, it is processed into a circular through hole with a diameter of 5mm, the inner wall is sprayed with polytetrafluoroethylene smooth wear-resistant coating, the coating thickness is 0.08mm, which reduces the friction resistance of connecting rod 4 and improves the cooperation precision.

[0028] The actual cooperation gap calculation formula of hole 7 and connecting rod 4 is: δactual=D-d-2t=5mm-1mm-2×0.08mm=3.84mm; Where D is the diameter of hole 7, d is the nominal outer diameter of connecting rod 4, t is the coating thickness, which ensures smooth assembly without movement.

[0029] 4. Locking bolt 3: stainless steel material, thread specification M4x8, two for each holder (lower holder 1, upper holder 2), symmetrically distributed on both sides of the U-shaped groove, axis perpendicular to the side wall of the tower ruler, after tightening, uniform locking force can be applied from both sides, suitable for fixing different width tower rulers. Rubber non-slip pad is installed at the end of the locking bolt 3 to increase the contact area and avoid damaging the surface of the tower ruler.

[0030] The total locking force calculation formula of the locking bolt 3 is: F total =2F single ×cosθ=2×1500N×cos90°=3000N; Where F single is the locking force of a single bolt 1500N, and θ is the angle between the bolt axis and the tower ruler side wall 90°.

[0031] 5. Positioning bolt 8: carbon steel material, surface galvanized anti-rust, thread specification M3, end provided with polyurethane elastic pressure head (elastic modulus 3GPa), installed in the reserved threaded hole of the hole 7 side wall, perpendicular to the hole 7 axis, after tightening, the elastic pressure head can be tightly pressed against the outer wall of the connecting rod 4 to realize axial positioning.

[0032] The locking pressure calculation formula of the positioning bolt 8 is: F=E×A×(ΔL / L h )=3×10 3 ×3×(0.2 / 8)=225N Where E is the elastic modulus of the elastic pressure head 3GPa, A is the pressure area 3mm 2 , ΔL is the compression amount 0.2mm, and L h is the effective working length 8mm.

[0033] Anti-skid pad: rubber anti-skid pad is bonded on the inner surface of the U-shaped groove of the lower holder 1 and the upper holder 2, with a Shore hardness of 70HA, and a diamond anti-skid pattern (pattern depth 0.4mm) is pressed on the surface to increase the static friction with the side wall of the tower ruler and prevent the holder from sliding laterally.

[0034] (2) Process implementation Connecting rod 4 processing: stainless steel pipe is cut to a basic length of 200mm using high-precision pipe cutting equipment, and the outer diameter size is finished on a centerless grinding machine; the adjustable part adopts a sleeve structure, with a gap between the outer pipe and the inner pipe controlled at 0.1mm to ensure smooth extension and retraction; after deburring by a grinding wheel, the two ends are polished.

[0035] Fixator processing: according to the design size to make injection mold, melt the hard plastic raw material into the mold, and then take it out after cooling and forming. Threaded holes are machined by tapping machine, and hole 7 is formed by positioning injection molding with a core rod. After forming, it is finished by a drilling machine to ensure hole diameter accuracy ± 0.01mm.

[0036] Hole 7 coating processing: PTFE coating is sprayed on the inner wall of hole 7 by electrostatic spraying process, and then sintered and solidified at 380℃ to ensure that the coating adhesion reaches 5B level.

[0037] Bolt processing: locking bolt 3 and positioning bolt 8 are processed according to standard thread process, and the surface is treated with anti-rust treatment. The elastic pressure head of positioning bolt 8 is fixed by environmentally friendly glue, and after bonding, it is cured for 24 hours.

[0038] Anti-skid pad processing: cut the rubber material according to the size of the fixator U-shaped groove, mold the diamond anti-skid pattern, and bond it to the inside of the fixator with strong glue. After curing, it ensures that the bonding strength is ≥1MPa.

[0039] III. Assembly steps (1) Component pretreatment: check the quality of all components, confirm that the connecting rod 4 has no bending, the fixator 1 and 2 have no cracking, the bolt 3 and 8 have no thread damage, and the anti-skid pad has no falling off; clean the surface of the components to ensure that the assembly surface is clean.

[0040] (2) Fixator installation: the lower fixator 1 is sleeved on the lower part of the staff fixed part 5 (50mm away from the bottom of the staff), and the upper fixator 2 is sleeved on the upper part of the staff telescopic part 6 (80mm away from the top of the staff), ensuring that the installation direction of the two is consistent, and the hole 7 on both sides is on the same axis.

[0041] (3) Connecting rod 4 assembly: according to the initial distance between the staff fixed part 5 and the staff telescopic part 6, adjust the adjustable length of the two connecting rods 4, so that the connecting rods 4 are inserted into the holes 7 of the lower fixator 1 and the upper fixator 2 respectively, and ensure that the connecting rods 4 are in place and perpendicular.

[0042] (4) Fixator locking: use a wrench to tighten the locking bolts 3 on both sides of the lower fixator 1 and the upper fixator 2 simultaneously, control the tightening torque 6N・m, and ensure that the anti-skid pad is tightly attached to the staff side wall, and the fixator has no horizontal movement.

[0043] (5) Connecting rod 4 positioning: tighten the positioning bolt 8, so that the elastic pressure head tightly presses against the outer wall of the connecting rod 4, and control the tightening degree according to the calculated locking pressure 225N to prevent the connecting rod 4 from moving axially.

[0044] (6) Assembly verification: pull the staff telescopic part 6 to test the smoothness of expansion, and measure the length of the two connecting rods 4 with a caliper to ensure that the synchronization error meets the requirements.

[0045] Four, use method implementation Preoperative examination: Confirm that the locking bolt 3 and the positioning bolt 8 are not loose before measurement, and that the connecting rod 4 is flexible in extension and retraction, and that the tower scale fixed part 5 and the tower scale telescopic part 6 are not skewed.

[0046] Tower scale extraction: According to the measurement requirement, the tower scale telescopic part 6 is extracted, the connecting rod 4 is stretched synchronously with the telescopic part 6, the adjustable length is automatically matched with the extracted length according to the adaptive formula, and no additional adjustment is required.

[0047] Measurement operation: The tower scale with the assembled device is erected at the measurement point, and the level measurement can be performed by holding the bottom of the tower scale, and the connecting rod 4 limits the skew of the tower scale through bilateral symmetrical support.

[0048] Recycling and storage: After the measurement is completed, the locking bolt 3 and the positioning bolt 8 are loosened, the tower scale telescopic part 6 is retracted, the connecting rod 4 is adjusted to the shortest length (200mm), the fixers 1 and 2 are removed, and after cleaning, they are stored for repeated use.

[0049] Five, effect verification The device has been tested on site, and when the tower scale is completely extracted (5m), the skew amount is less than or equal to 0.5‰, which significantly improves the measurement accuracy compared to the case without the fixing device (skew amount greater than or equal to 3‰); the weight of a single set of device is less than or equal to 250g, and no three-legged support is required to stabilize the tower scale; the assembly time is less than or equal to 5 minutes; after 500 times of repeated extraction and use, the connecting rod 4 is not deformed, the fixers 1 and 2 are not damaged, and the bolts 3 and 8 are not loose, which meets the repeated turnover use requirements, and the economy and practicability are good.

[0050] The fixing device for ensuring the perpendicularity of the tower scale effectively solves the pain points of frequent skewing and poor adaptability in traditional tower scale measurement through scientific structure layout and material selection. The lower fixer 1 and the upper fixer 2 are made of hard plastic material, which not only ensures the structural strength and reduces plastic deformation during use, but also significantly reduces the overall weight of the device, so that the tower scale can be stabilized without the help of a leveling rod auxiliary tripod, and the carrying and operation are more convenient. The connecting rod 4 is made of 1mm thick stainless steel pipe, which has high material strength and strong anti-deformation ability, and is designed as two symmetrically distributed structures, which can form bilateral symmetrical support with the diameter 5mm hole 7 reserved at both ends of the fixer 1, accurately limit the skew of the tower scale telescopic part 6 relative to the tower scale fixed part 5, and significantly improve the measurement accuracy. At the same time, the lower fixer 1 and the upper fixer 2 are both equipped with locking bolts 3, which can flexibly adapt to different widths of rectangular pull-out tower scales through symmetrical locking structure, without the need to customize special fixing parts for specific tower scales, with wide adaptation range and stronger practicability.

[0051] The structural form of the present application is simple and intuitive, the operation process is clear and easy to understand, and the assembly and use can be completed without complex professional skills: only the adjustable length of the connecting rod 4 needs to be adjusted according to the actual tower size, then the fixer 1 is locked with the tower scale through the locking bolt 3, and finally the upper and lower fixers are connected through the connecting rod 4, the whole assembly process is efficient and fast, and the preparation time before field measurement can be reduced. In addition, the durability and economic advantage of each part of the device are obvious: the stainless steel material of the connecting rod 4 and the hard plastic material of the fixer 1 both have good anti-wear performance, and are not easy to deform and damage after long-term use, and can be repeatedly used for many times; the setting of the positioning bolt 8 further strengthens the connection stability of the connecting rod 4 and the fixer 1, avoids the movement or loosening during the measurement process, and prolongs the service life of the whole device. At the same time, the device does not need additional auxiliary equipment, the processing technology of the parts is simple, the cost is controllable, the equipment investment and use cost in the construction measurement can be reduced, and the device has good practicability and economy.

[0052] The basic principles, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application, and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A fixing device for ensuring the verticality of a tower scale, comprising a connecting rod (4) and two sets of fixers, namely a lower fixer (1) and an upper fixer (2), the lower fixer (1) being used for detachable installation on a tower scale fixing part (5), and the upper fixer (2) being used for detachable installation on a tower scale telescopic part (6); through holes (7) are formed in corresponding positions of the lower fixer (1) and the upper fixer (2), both ends of the connecting rod (4) are movably arranged in the through holes (7) of the lower fixer (1) and the upper fixer (2), respectively, and the lower fixer (1) and the upper fixer (2) are both provided with locking bolts (3) arranged along the radial direction of the fixers and used for locking and fixing the fixers and the tower scale, and the connecting rod (4) is of a sectional telescopic structure, the length of which is adaptively adjusted according to the relative positions of the tower scale fixing part (5) and the tower scale telescopic part (6) to limit the deflection of the tower scale telescopic part (6) relative to the tower scale fixing part (5). The connecting rod (4) is made of a stainless steel pipe with a diameter of 1 mm and a wall thickness δ ∈ [0.1 mm, 0.2 mm], and the tensile strength thereof needs to satisfy the following checking formula: wherein d is the nominal outer diameter of the connecting rod (4), the formula is used to precisely control the fitting accuracy, thereby achieving flexible assembly of the connecting rod (4) and the fixers and avoiding excessive gap between the connecting rod (4) and the fixers to cause radial movement of the tower scale.

2. The fixing device for ensuring the verticality of a tower rod according to claim 1, characterized in that, The total length of the connecting rod (4) satisfies the following calculation formula: L = L0 + ΔL, wherein L is the actual working length of the connecting rod (4), L0 is the basic length of the connecting rod (4) and is fixed at 200 mm, ΔL is the adjustable length of the connecting rod (4) and ΔL ∈ [0 mm, 150 mm], and the adjustment step value of ΔL is 1 mm, which can be precisely matched with the actual telescopic amount of the tower scale. ； Wherein, σ is the actual tensile strength of the connecting rod (4), F max is the maximum lateral load borne by the connecting rod (4) during the process of tower scale measurement, the value range is 50N-100N, d is the outer diameter of the stainless steel pipe, δ is the wall thickness of the stainless steel pipe, through the formula to ensure the stiffness and anti-deformation ability of the connecting structure, to avoid the tower scale from being deflected due to the deformation of the connecting rod (4) under stress.

3. The fixing device for ensuring the verticality of a tower rod according to claim 1, characterized in that, The inner diameter D of the hole (7) is 5 mm, the inner wall of the hole (7) is provided with a smooth wear-resistant coating, the thickness t of the coating is 0.05-0.1 mm, and the actual fitting gap δ of the hole (7) and the end of the connecting rod (4) actual satisfies the following calculation formula: ； The adjustable length ΔL of the connecting rod (4) and the extracted length H of the tower scale telescopic part (6) satisfy the following adaptive relationship: ΔL = k × H; wherein k is an adaptive coefficient and k ∈ [0.8, 1.2], which is determined by field calibration according to the segment length of the tower scale and the connecting gap, thereby ensuring the limiting effect of the connecting rod (4) on the deflection of the tower scale.

4. The securing device for ensuring the verticality of a tower rod according to claim 1, characterized in that, The main body structure of the lower fixer (1) and the upper fixer (2) is made of a hard plastic material by injection molding, the bending elastic modulus of the hard plastic material is 2.5-3.5 GPa, and the elongation at break is not less than 5%, thereby effectively reducing the overall weight of the device and reducing plastic deformation during use.

5. The fixing device for ensuring the verticality of a tower rod according to claim 4, characterized in that, Further comprising a positioning bolt (8) vertically arranged in the side wall of the through hole (7) and threadedly connected with the through hole (7), and the end of the positioning bolt (8) is provided with an elastic pressure head with an elastic modulus E ∈ [2 GPa, 5 GPa], and when the length of the connecting rod (4) is adjusted in place, the locking pressure generated by the positioning bolt (8) needs to satisfy the following formula:

6. The fixing device for ensuring the verticality of a tower rod according to claim 1, characterized in that, ​ 7. The fixing device for ensuring the verticality of a tower rod according to claim 1, characterized in that, ​ ； ； Wherein, F is the locking pressure of the elastic pressure head to the connecting rod (4), A is the pressure receiving cross-sectional area of the elastic pressure head, A ∈ [2mm 2 ,5mm 2 ], ΔL is the compression amount of the elastic pressure head, ΔL ∈ [0.1mm, 0.3mm], L h is the effective working length of the elastic pressure head, L h ∈ [5mm, 10mm]; M is the locking torque of the positioning bolt (8), r is the pitch diameter of the positioning bolt (8), r ∈ [1.5mm, 2mm], f is the friction coefficient of the elastic pressure head and the connecting rod (4), f ∈ [0.3, 0.5], ensuring that F ≥ 30N, and the axial positioning and locking of the connecting rod (4) and the fixator are ensured by the double formula, preventing the connecting rod (4) from moving during measurement.

8. The fixing device for ensuring the verticality of a tower rod according to claim 1, characterized in that, The number of locking bolts (3) arranged on each fixing device is two, the two locking bolts (3) are symmetrically distributed on the two sides of the fixing device, the axis of the locking bolt (3) is perpendicular to the side wall of the staff gauge, the included angle θ = 90°, the thread specification of the locking bolt (3) is M4*8, and the locking force and the tightening torque satisfy the following relationship: ； ； Wherein, F total F is the total locking force of the two locking bolts (3) on the tower scale, F single F is the locking force of a single locking bolt (3), cos θ = 1; M is the tightening torque of a single locking bolt (3), control, M ∈ [5 N·m, 8 N·m], d2 is the M4 thread pitch diameter, d2 = 3.45 mm, λ is the thread lead angle, the lead angle λ of M4*8 is approximately 3.39°, rho' is the equivalent friction angle of the thread, the value ρ' ∈ [6°, 8°], and the locking force between the fixing device and the tower scale is ensured to be uniform and stable through the formula, and the fixing device is suitable for tower scales of different widths.

9. The fixing device for ensuring the verticality of a tower rod according to claim 1, characterized in that, The number of the connecting rods (4) is two, the two connecting rods (4) are parallel and symmetrically arranged on the two sides of the staff gauge, and the length adjustment synchronization error of the two connecting rods (4) needs to satisfy the following formula: ； wherein ΔL error is the length synchronization error of the two connecting rods (4), L1, L2 are the actual working lengths of the two connecting rods (4), k = 0.5 x 10 -3 m / m is the error coefficient, H is the extension length of the tower scale telescopic part (6), H ∈ [0mm, 3000mm], and it is ensured that ΔL error ≤ 0.5mm, the synchronization error is strictly controlled through the formula, the coaxiality of the tower scale fixed part (5) and the tower scale telescopic part (6) is further improved through the double-sided symmetrical support structure, and the deflection caused by single-sided stress is avoided.

10. The fixing device for ensuring the verticality of a tower rod according to claim 1, characterized in that, The inner side surface of the lower fixing device (1) and the upper fixing device (2) in contact with the staff gauge is provided with an anti-skid pad layer, the anti-skid pad layer is made of rubber material, the Shore hardness is 65-75HA, the surface of the anti-skid pad layer is provided with a rhombic anti-skid pattern, the pattern depth is 0.3-0.5mm, which is used for increasing the static friction between the fixing device and the staff gauge, and preventing the fixing device from transversely sliding relative to the staff gauge.

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