Engineering measuring instrument tripod positioning device
By designing a tripod positioning device with a base, a fixed end and a counterweight device, the problem of the tripod slipping and tipping on hard ground is solved, and the measurement accuracy and stability in harsh environments are improved.
Patent Information
- Application Number
- CN202422953677.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-02
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-12-02
AI Technical Summary
In the prior art, tripods of engineering surveying instruments are prone to slipping on hard surfaces and to tipping over in bad weather or due to vibrations from vehicles and pedestrians, resulting in reduced measurement accuracy.
A tripod positioning device is designed, which includes a base, a fixed end, an adjustment device and a counterweight device. The tripod is fixed by the fixed end, the adjustment device keeps the base level, and the counterweight device enhances stability. The arc-shaped main beam and support rod are in contact with the ground to increase friction and lower the center of gravity.
It effectively prevents the tripod from slipping and tipping over, ensures that the center of the measuring instrument does not deviate from the reference point, reduces the impact of vibration, and improves measurement accuracy and stability.
Smart Images
Figure CN223448017U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of engineering survey, and relates to a device for fixing the position of an engineering survey instrument tripod. BACKGROUND
[0002] An engineering survey tripod is a support for erecting various survey instruments (such as theodolites, total stations, etc.), which can stably place the instruments on the ground for measurement. By adjusting the height and level of the tripod, the survey instrument can be ensured to be in the best working state, thereby ensuring the accuracy and reliability of the measurement. Each leg of the tripod has a sharp end at the bottom and a pedal for stepping, to facilitate the insertion of the sharp end into the ground to fix the position of the tripod, providing a stable platform for measurement to ensure measurement accuracy.
[0003] At present, with the expansion of the scope of engineering construction and the improvement of site conditions, some survey reference points have been set up on hardened sites such as cement pavement. Due to the high strength of the cement pavement, the sharp end of the tripod leg cannot be inserted to fix it. When rotating the instrument, the survey personnel cannot avoid the sliding of the tripod leg, causing the center position of the instrument to deviate from the survey reference point, resulting in a decrease in measurement accuracy. In particular, in the case of sudden strong wind, the measurement instrument and its tripod are easily blown down, forcing the measurement work to stop, and more seriously, the valuable engineering survey instrument is damaged. At the same time, due to the high stiffness and good integrity of the cement pavement, the vibration caused by the passing of nearby vehicles and pedestrians can be transmitted to the survey reference point, causing the position of the tripod to deviate, thereby reducing the measurement accuracy.
[0004] In the technical solution of patent CN117268356A, a quick measurement positioner and its construction method are provided. The positioner includes a positioning device and a tripod, the positioning device is arranged on the tripod, the auxiliary positioning mechanism is used in cooperation with the laser positioner, the horizontal adjustment mechanism is arranged in the outer shell, the positioner mounting mechanism is arranged on the horizontal adjustment mechanism, and the laser positioner is arranged on the positioner mounting mechanism and moves with the positioner mounting mechanism. The device can level the positioner when in use, to a certain extent, thereby avoiding measurement errors during line laying calibration and ensuring the accuracy of line laying measurement results.
[0005] However, the device does not reinforce the tripod during use in different states of the road section, it is difficult to avoid the sliding of the tripod on the hard ground, it is easy to be knocked down in bad weather, the vibration caused by the passing of vehicles and pedestrians also causes errors in the measurement results, affecting the accuracy and stability of the subsequent measurement data, and is not conducive to precise surveying and mapping. Utility model content
[0006] The utility model discloses in order to overcome the device gravity in the prior art is too high, resulting in low overall stability, at the same time, the tripod is not reinforced, and the slippage of the tripod on the hard ground is difficult to avoid, and provides an engineering surveying instrument tripod positioning device to overcome the above-mentioned defects.
[0007] In order to achieve the above object, the utility model realizes through the following technical schemes:
[0008] An engineering surveying instrument tripod positioning device, the device includes a base, the base is provided with a fixed end for fixing the tripod, the fixed end is provided with an adjusting device for adjusting the horizontal position, and the base is also provided with a counterweight device for improving stability.
[0009] The utility model discloses a base, a fixed end and a counterweight device. The base can be used for fixing the target tripod, avoids the phenomenon of unstable measurement caused by the sliding of the tripod, integrates the tripod and the surveying instrument, prevents the relative position movement between the three legs of the tripod, prevents the center of the surveying instrument from deviating from the measurement reference point, and ensures the necessary conditions of measurement accuracy. The adjusting device can adjust the base of the device to be horizontal in different environments, which is beneficial to fixing the tripod and ensuring the accuracy of the measurement results.
[0010] The utility model also includes a counterweight device, the counterweight device can appropriately reduce the gravity center of the whole device according to actual needs, enhances the stability of the tripod, ensures the accuracy of measurement, avoids the specific influence of environmental factors such as severe weather on the measurement data, is beneficial to reducing errors and increasing accuracy in specific practice.
[0011] Preferably, the base includes a bottom plate, the periphery of the bottom plate is provided with an arc-shaped main beam, a cover plate for connecting and fixing the instrument is arranged at the fixed end above the main beam, and mounting holes for connecting subsequent tripod pedals are arranged on the cover plate.
[0012] The utility model sets up mounting holes, the mounting holes need to be slightly larger than the bottom end sharp head of the tripod leg rod and the pedal, and the tripod is fixed on the device through the mounting holes to form a whole. Meanwhile, the main beam of the utility model is designed to be arc-shaped, can avoid the kick of the staff to a certain extent, and better adapts to various stress conditions, especially when bearing horizontal or inclined load, the arc-shaped support main beam can better disperse and resist these forces, thereby improving the stability of the whole support system.
[0013] Preferably, the main beam is bent from C-shaped steel.
[0014] The main beam of the utility model is made of C-shaped steel, which has the advantages of high strength and rigidity, light weight and high efficiency, excellent bending and torsion resistance, good toughness and weldability, and easy processing and molding.
[0015] As preferred, the adjusting device comprises a bearing part arranged at the fixed end and connected with the base and the cover plate, a regulating hole is arranged in the middle of the bearing part, and a supporting rod is arranged in the regulating hole and can adjust the position of the regulating hole up and down.
[0016] The adjusting device of the utility model is provided with the regulating hole penetrating the bearing part, and the supporting rod is arranged in the regulating hole, so that the height position of the supporting rod can be adjusted through the regulating hole, thereby ensuring the horizontality of the base during the use of the device in various environments, preventing the device from being inclined and causing inaccurate measurement data.
[0017] As preferred, one end of the supporting rod is a pointed end for convenient insertion into the soil, and the other end is connected with a fixing pad.
[0018] The utility model discloses the pointed end of the supporting rod is arranged at one end, which can be inserted into the soil when the measurement work is in the soil, thereby ensuring the stability of the whole structure.
[0019] As preferred, the adjusting device further comprises a fixing screw hole arranged at the side of the bearing part and connected with the regulating hole, a fixing screw rod is arranged in the fixing screw hole, and the fixing screw rod can move into the regulating hole along the fixing screw hole, thereby abutting against the supporting rod.
[0020] The utility model adjusts the position of the fixing nut and the supporting rod according to actual needs, thereby ensuring that the base can be adjusted to be horizontal in different environments, making the measurement data more accurate and reliable, and being beneficial to practical application.
[0021] As preferred, the adjusting device further comprises a fixing nut arranged outside the fixing screw rod and used for limiting the fixing screw rod.
[0022] The fixed screw is further connected with a fixed nut for limiting, the fixed nut and the fixed screw are matched to be tightly connected, the fixed screw can be prevented from loosening due to vibration, the reliability and durability of connection can be remarkably improved, meanwhile, the connection mode of the fixed nut and the fixed screw is easier to disassemble and maintain, when a part needs to be replaced or maintained, the connected part can be easily disassembled by only loosening the fixed nut.
[0023] As preferred, the adjusting device further comprises a crosspiece arranged at the end of the fixed screw away from the support rod, which facilitates manual rotation.
[0024] The crosspiece is designed to enable the operator to hold and rotate the fixed screw more easily, especially when the space is limited or a larger torque is required for fastening or loosening, the crosspiece provides a more comfortable holding point and a larger force arm, thereby reducing the operation difficulty.
[0025] As preferred, the adjusting device further comprises a gasket arranged between the fixed screw and the support rod, which prevents the support from sliding.
[0026] The gasket is arranged between the fixed screw and the support rod, the contact surface of the gasket and the support rod is semicircular, the radius is the same as that of the support rod, and the joint with the fixed screw is a corresponding pit, which facilitates the fixed screw to enter the pit and abut against the support rod, increases the fixed contact area, prevents the support rod from sliding, and ensures normal and long-term use of the utility model.
[0027] As preferred, the counterweight device comprises a counterweight block arranged on the center of the base, and first and second observation holes for observing the base point are respectively arranged in the center of the base plate and the counterweight block, the diameter of the second observation hole is not less than that of the first observation hole, and the two centers are kept coincident when placed.
[0028] The counterweight block is arranged to lower the gravity center of the device, increase stability, and avoid the influence of strong wind and other bad weather on the device. Meanwhile, the first and second observation holes are arranged to ensure that the device can be installed and fixed at an accurate position, facilitate alignment and observation of the base point, reduce operation difficulty, increase the accuracy of the position of the device, are conducive to use in actual precision measurement, and increase the precision of measurement data.
[0029] Therefore, the utility model has the following beneficial effects:
[0030] (1) The utility model connects the tripod and the measuring instrument into an integral whole, and supports the fixed pad at the bottom of the support rod on the road surface. The friction coefficient and the contact area of the fixed pad are larger than the sharp head of the tripod, and the overall weight including the counterweight block is also larger than before the utility model is not used, so that the friction force is greatly increased, the utility model and the tripod and the measuring instrument can be effectively prevented from slipping, and the adverse influence of the difficulty in fixing the position of the tripod in the measuring environment is eliminated;
[0031] (2) The utility model discloses the position fixed between the hole of the bottom end of three foot poles of the tripod for engineering surveying, can prevent the relative position movement between the three foot poles of the tripod, prevent the center of the surveying instrument from deviating from the surveying reference point, guarantee the necessary condition of surveying precision;
[0032] (3) The utility model discloses the self weight of surveying instrument and tripod can be increased by the counterweight of bottom plate, and the gravity center can be reduced, which can prevent from being blown down by strong wind;
[0033] (4) The utility model discloses the vibration of the vehicle and the passerby near the surveying reference point can be eliminated by the contact of fixed pad and ground, and the surveying instrument is not affected;
[0034] (5) The utility model discloses clever design, wide applicability. The utility model discloses the external device, does not influence the original use function of the tripod, and can match all similar tripods; The arc-shaped main beam can avoid the feet of surveying personnel, and does not influence the standing position of surveying personnel. The height of the utility model can be adjusted in real time by the fixed screw rod of bearing part to control the position of support rod according to the site flatness, and the tip of the both ends of support rod and fixed pad can be interchanged to adapt to the situation that the position of individual support rod does not fall on the cement pavement. BRIEF DESCRIPTION OF DRAWINGS
[0035] Fig. 1 It is the structure diagram of positioning device.
[0036] Fig. 2 It is the plan view of positioning device.
[0037] Mark number explanation in drawing: base 10;Bottom plate 11;First observation hole 111;Main beam 12;Cover plate 13;Mounting hole 131;Fixed end 20;Adjusting device 21;Fixed screw rod 211;Fixed nut 212;Crosspiece 213;Gasket 214;Adjusting hole 215;Fixed screw hole 216;Support rod 22;Tip 221;Fixed pad 222;Bearing part 23;Counterweight device 30;Counterweight block 31;Second observation hole 311. DETAILED DESCRIPTION
[0038] The present application will be further described in conjunction with specific embodiments. Those skilled in the art will be able to implement the present application based on these descriptions. In addition, the embodiments of the present application involved in the following description are generally only a part of the embodiments of the present application, not all embodiments. Therefore, based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor shall fall within the scope of protection of the present application.
[0039] Example 1
[0040] As Figs. 1-2The embodiment provides a tripod positioning device of engineering surveying instrument, which can be divided into a base 10, a fixed end 20 and a counterweight device 30.
[0041] The base 10 comprises a bottom plate 11, an arc-shaped main beam 12 arranged around the bottom plate 11, a cover plate 13 arranged at the fixed end 20 above the main beam 12 and used for connecting a fixed instrument, and mounting holes 131 arranged on the cover plate 13 and used for connecting subsequent tripod steps.
[0042] The fixed end 20 is provided with an adjusting device 21 used for adjusting the positioning device and ensuring the horizontal of the base 10, so as to adapt to more different actual requirements. The adjusting device 21 comprises a bearing part 23 arranged at the fixed end 20 and connected with the base 10 and the cover plate 13, an adjusting hole 215 arranged in the middle of the bearing part 23, and a support rod 22 arranged in the adjusting hole 215 and used for adjusting the position of the adjusting hole 215 up and down. When the local terrain is uneven, the extension of the support rod 22 can be adjusted according to actual requirements, so as to ensure the horizontal of the base 10, thereby ensuring the horizontal and stability of the tripod and increasing the precision of measurement. One end of the support rod 22 is a pointed end 221 used for conveniently inserting into soil, and the other end is connected with a fixed pad 222. When the measurement work is carried out on the soil, the pointed end 221 can be inserted into the soil; when the measurement work is carried out on the non-soil, the support rod 22 is turned and installed, and the fixed pad 222 is grounded. On one hand, the fixed pad 222 has excellent anti-skid performance, can increase the friction between the support rod 22 and the ground, and is convenient to install, and on the other hand, has certain damping effect, so as to increase the service life of the support rod 22. The adjusting device 21 further comprises a fixed screw hole 216 arranged at the side of the bearing part 23 and connected with the adjusting hole 215, a fixed screw rod 211 arranged in the fixed screw hole 216 and used for moving into the adjusting hole 215 along the fixed screw hole 216, so as to abut against the support rod 22.
[0043] The counterweight device 30 includes a counterweight 31 arranged on the center of the base 10, and the center of the base plate 11 and the counterweight 31 are respectively provided with a first observation hole 111 and a second observation hole 311 for observing the base point, the diameter of the second observation hole 311 is not less than that of the first observation hole 111, and the centers of the two are kept coincident when placed. The counterweight 31 is arranged to reduce the gravity center of the device, increase the stability, and avoid the influence of strong wind and other bad weather on the device. At the same time, the first observation hole 111 and the second observation hole 311 are arranged to ensure that the device can be installed and fixed at an accurate position, facilitate the alignment and observation of the base point, reduce the operation difficulty, increase the accuracy of the device position, and be beneficial to be used in actual accurate measurement, and increase the accuracy of the measurement data. Whether the base point can be observed through the first observation hole 111 and the second observation hole 311 is observed, if yes, it indicates that the device has not deviated, and if not, the position of the device needs to be adjusted.
[0044] In the adjusting device 21, in order to increase the compactness and the stability of the connection of the device, a fixing nut 212 is arranged. The fixing screw 211 is further connected with a fixing nut 212 for limiting position. The fixing nut 212 and the fixing screw 211 are matched to be tightly connected, which can prevent the fixing screw 211 from loosening due to vibration, and can significantly improve the reliability and durability of the connection. At the same time, the connection mode of the fixing nut 212 and the fixing screw 211 is easier to disassemble and maintain. When the parts need to be replaced or repaired, the connected parts can be easily disassembled by loosening the fixing nut 212.
[0045] In the adjusting device 21, in order to increase the operation convenience of the device and reduce the damage rate in the use process, a crosspiece 213 is arranged. The design of the crosspiece 213 enables the operator to more easily hold and rotate the fixing screw 211. Especially when the space is limited or a larger torque is needed for fastening or loosening, the crosspiece 213 provides a more comfortable holding point and a larger force arm, thereby reducing the operation difficulty.
[0046] In the adjusting device 21, in order to increase the compactness of the connection between the fixing screw 211 and the support rod 22 of the device, a gasket 214 is arranged. The contact surface of the gasket 214 with the support rod 22 is semicircular, and the radius is the same as that of the support rod 22. The interface with the fixing screw 211 is a corresponding pit, which facilitates the fixing screw 211 to enter the pit and abut against the support rod, increases the fixing contact area, prevents the support rod 22 from sliding, and ensures the normal and long-term use of the device.
[0047] On the basis of the above embodiment, the main beam 12 is further optimized.
[0048] In order to increase the mechanical strength of the device, the main beam 12 is bent from C-shaped steel. The main beam 12 is bent from C-shaped steel, which can increase the mechanical strength while ensuring the overall aesthetics of the device. The main beam made of C-shaped steel has the advantages of high strength and rigidity, light weight and high efficiency, excellent bending and torsion resistance, good toughness and weldability, easy processing and forming.
[0049] The specific use process of the embodiment is as follows:
[0050] The utility model is placed in the station where the engineering measuring instrument needs to be erected, the position is moved, the first observation hole 111 on the bottom plate 11 is basically aligned with the measuring reference point; according to the specific flatness of the site, the tip 221 of the supporting rod 22 or the fixed pad 222 is selected towards the ground. Loosen the fixing screw 211 arranged on the load-bearing part 23 of the fixed end 20, adjust the supporting rod 22 to the appropriate height, ensure the levelness of the base 10, then insert the arc-shaped ring-shaped pad 214, the fixing screw 211 is sleeved in the matched fixing nut 212, and the fixing screw 211 is tightened by using the crosspiece 213. Connect the tripod, insert the three foot rod tips and the pedal into the mounting hole 131 on the cover plate 13 of the base 10 respectively, erect the measuring instrument according to the conventional procedure, and place the counterweight block 31 of the counterweight device 30 on the bottom plate 11. Observe whether the second observation hole 311 on the counterweight block 31 can see the base point. If it can, it means that the device is not deviated, if it cannot, the position of the device needs to be adjusted. Perform the conventional engineering measurement work.
Claims
1. A tripod positioning device for an engineering surveying instrument, characterized in that: The device comprises a base (10), the base (10) is provided with a fixed end (20) for fixing a tripod, the fixed end (20) is provided with an adjustment device (21) for adjusting the horizontal position of the positioning device, and the base (10) is also provided with a counterweight device (30) for improving stability.
2. The tripod positioning device for an engineering surveying instrument according to claim 1, characterized in that: The base (10) includes a bottom plate (11), wherein an arc-shaped main beam (12) is provided around the bottom plate (11), and a cover plate (13) for connecting and fixing an instrument is provided at a fixed end (20) above the main beam (12), and a mounting hole (131) for connecting a subsequent tripod pedal is provided on the cover plate (13).
3. The tripod positioning device for an engineering surveying instrument according to claim 2, characterized in that: The main beam (12) is formed by bending C-shaped steel.
4. The tripod positioning device for an engineering surveying instrument according to claim 1, 2 or 3, characterized in that: The adjusting device (21) comprises a load-bearing member (23) arranged at a fixed end (20) and connected to the base (10) and the cover plate (13); an adjusting hole (215) is provided in the middle of the load-bearing member (23); and a support rod (22) is provided inside the adjusting hole (215) for adjusting the position up and down along the adjusting hole (215).
5. The tripod positioning device for an engineering surveying instrument according to claim 4, characterized in that: One end of the support rod (22) is a tip (221) for convenient insertion into the soil, and the other end is connected to a fixing pad (222).
6. The tripod positioning device for an engineering surveying instrument according to claim 4, characterized in that: The adjusting device (21) further comprises a fixing screw hole (216) provided on the side of the load-bearing member (23) and connected to the adjusting hole (215); a fixing screw rod (211) is provided inside the fixing screw hole (216); the fixing screw rod (211) can move along the fixing screw hole (216) toward the inside of the adjusting hole (215), thereby abutting against the support rod (22).
7. The tripod positioning device for an engineering surveying instrument according to claim 6, characterized in that: The adjusting device (21) further comprises a fixing nut (212) sleeved on the outside of the fixing screw (211) for limiting the position of the fixing screw (211).
8. The tripod positioning device for an engineering surveying instrument according to claim 7, characterized in that: The adjusting device (21) further comprises a horizontal bar (213) provided at one end of the fixing screw (211) away from the support rod (22) for facilitating manual rotation.
9. The tripod positioning device for an engineering surveying instrument according to claim 6, characterized in that: The adjusting device (21) further includes a washer (214) disposed between the fixing screw (211) and the support rod (22) for preventing the support rod (22) from sliding.
10. The tripod positioning device for an engineering surveying instrument according to claim 2, characterized in that: The counterweight device (30) includes a counterweight block (31) arranged at the center of the base. A first observation hole (111) and a second observation hole (311) for observing a base point are respectively opened in the center of the base plate (11) and the counterweight block (31). The diameter of the second observation hole (311) is not less than the diameter of the first observation hole (111). When placed, the centers of the two observation holes are kept coincident.