Supporting frame for fixing level gauge
By designing a level fixing support frame including a fixed ring, a floating ring and a support platform, the problem of difficulty in determining the level status of the tripod platform in a rugged environment is solved, and the platform to the horizontal state is quickly adjusted, the level fixing and leveling process is simplified, and the efficiency and accuracy of surveying and mapping work is improved.
Patent Information
- Application Number
- CN202422138214.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-09-02
AI Technical Summary
In mountainous, sloped or rugged pothole environments, it is difficult for operators to judge the horizontal status of the tripod platform through the human eye, resulting in the level being unable to level up after the level is fixed, and the tripod position needs to be readjusted, affecting the surveying and mapping work.
A level fixing support frame is designed, including a fixing ring, a floating ring and a support platform. The support platform is kept balanced based on its own center of gravity through a vertically arranged short axis, and is fixed by locking studs, reducing the observation and adjustment steps required by the operator to adjust the platform plane.
The support frame can quickly adjust the tripod platform to a horizontal state without relying on the visual judgment of the operator, simplifying the fixing and leveling process of the leveling device and improving the efficiency and accuracy of surveying and mapping work.
Smart Images
Figure CN222925263U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of measuring equipment, and particularly relates to a support frame for fixing a level instrument. Background Art
[0002] Before using a level instrument, it is necessary to fix the level instrument on a tripod through bolts, and then level it through the knob below the level instrument to ensure the measurement accuracy during the surveying and mapping process. In the prior art, through holes are formed in the platform at the top of the tripod, and a screw rod passes through the through holes and is screwed and fixed to the level instrument, so that the level instrument is fixed on the platform. During the process of setting up the tripod by the operator, in order to facilitate the subsequent leveling process, it is necessary to set the platform at the top of the tripod as horizontal as possible to reduce the difficulty of leveling the level instrument. In the prior art, the horizontality of the platform of the tripod is determined by the operator through visual observation. However, when the surveying and mapping environment is in a mountainous area, a slope, or a relatively rough and pitted area, the surrounding environment will cause trouble to the operator when setting up the tripod, resulting in errors in the operator's judgment and inability to make the platform at the top of the tripod tend to be horizontal. Often, it is only after the level instrument is fixed that it is found that the leveling of the level instrument cannot be completed, and the operator still needs to readjust the position and posture of the tripod, resulting in difficulties in the surveying and mapping work. Content of the Utility Model
[0003] In view of this, the utility model aims to provide a support frame for fixing a level instrument to help the operator overcome the influence of the surrounding environment and quickly adjust the platform at the top of the tripod to a state close to horizontal.
[0004] To achieve the above object, the technical solution of the utility model is realized as follows:
[0005] A support frame for fixing a level instrument includes a fixed ring, a floating ring, and a support platform. The floating ring is placed inside the fixed ring, and two first short shafts are arranged on the outer side of the floating ring. The floating ring is rotationally connected to the fixed ring through the two first short shafts, and the axes of the two first short shafts are in the same straight line. The support platform is placed inside the floating ring, and two second short shafts are arranged on the outer side of the support platform. The support platform is rotationally connected to the floating ring through the two second short shafts, and the axes of the two second short shafts are in the same straight line, and the first short shaft is perpendicular to the second short shaft. The fixed ring and the floating ring are respectively screwed with a first locking stud and a second locking stud, and when the first locking stud and the second locking stud are screwed inwards, the tops of the first locking stud and the second locking stud can abut against the floating ring or the support platform.
[0006] Furthermore, a locking portion is provided on the floating ring. The connection line between the locking portion and the center of the floating ring is perpendicular to the axis of the first short axis. The outer surface of the locking portion is spherical, and the center of the sphere of the spherical surface coincides with the center of the floating ring. When the first locking stud is tightened, it can abut against the outer surface of the locking portion.
[0007] Furthermore, the support platform includes a top surface and a locking surface extending downward from the side of the top surface. The locking surface is spherical, and the center of the sphere of the locking surface coincides with the center of the floating ring. When the second locking stud is tightened, it can abut against the locking surface.
[0008] Furthermore, the second locking stud is placed directly above the first short axis.
[0009] Furthermore, a screwing ear is provided on the floating ring, and the screwing ear is placed directly above the first short axis. The first locking stud is screwed to the screwing ear.
[0010] Furthermore, a cover is fixedly provided at the bottom of the support platform. Through holes corresponding to each other are opened on the cover and the top surface. A screw rod can pass through the cover and the support platform through the two through holes, and the screw rod can move along its own axial direction. A limiting edge extends outward from the middle of the screw rod, and the outer diameter of the limiting edge is larger than the outer diameter of the through hole.
[0011] Furthermore, a counterweight is fixedly provided at the bottom end of the screw rod.
[0012] Furthermore, a plurality of support feet are provided on the periphery of the fixed ring, and the top end of each support foot is hinged to the fixed ring respectively.
[0013] Furthermore, a limiting block extends inward from the top of each support foot respectively. When the support foot rotates inward to the limit position, the limiting block can abut against the lower surface of the support platform.
[0014] Compared with the prior art, the support frame for fixing a level instrument of the present utility model has the following advantages:
[0015] The present utility model adopts a vertically arranged short axis so that the support platform can maintain balance based on its own center of gravity, making the support platform tend to be horizontal. Then, the support platform is fixed by the locking stud, saving the process for the operator to observe and adjust the plane of the tripod, and avoiding the plane for fixing the level instrument being too inclined due to the sensory gap of the operator, which has an adverse effect on the subsequent leveling.
[0016] By arranging the second locking stud for fixing above the first short axis, the influence on the center of gravity of the floating ring due to inconsistent bolt lengths is reduced.
[0017] By adopting the method of integrally machining the top and the locking surface of the support platform and providing a cover at the bottom, the deviation between the plane and the locking surface caused by assembly errors is avoided.
[0018] The cooperation of the cover and the limiting edge is adopted to prevent the screw for locking the level from falling off. At the same time, by means of the counterweight block, the center of gravity of the support platform is lowered, making the support platform more inclined to be horizontally stable. Moreover, it is convenient for the operator to hold the counterweight block to tighten the screw.
[0019] The limiting blocks are arranged on the support feet. During storage, the support platform is supported by the limiting blocks to prevent the support platform and the floating ring from rotating during the storage and transportation process, thus facilitating transportation. Brief Description of the Drawings
[0020] The drawings forming a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:
[0021] Figure 1 It is a schematic diagram of the overall structure of the support frame;
[0022] Figure 2 It is a schematic cross-sectional view of the cooperation relationship among the support platform, the floating ring and the fixed ring;
[0023] Figure 3 It is an exploded schematic view of the cooperation relationship among the support platform, the floating ring and the fixed ring.
[0024] Description of the Reference Numerals in the Drawings:
[0025] 1 - fixed ring; 11 - first short axis; 12 - screw hole; 13 - first locking stud; 2 - floating ring; 21 - second short axis; 22 - locking portion; 23 - screwing ear; 24 - second locking stud; 3 - support platform; 31 - top surface; 32 - locking surface; 33 - cover; 34 - through hole; 35 - screw; 351 - limiting edge; 352 - counterweight block; 4 - support foot; 41 - limiting block. Detailed Description of the Embodiments
[0026] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.
[0027] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.
[0028] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "coupled" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific circumstances.
[0029] The present utility model will be described in detail below with reference to the drawings and in conjunction with embodiments.
[0030] The support frame for fixing a level instrument described in the present utility model includes a fixing ring 1, a floating ring 2, and a support platform 3. The floating ring 2 is placed inside the fixing ring 1, and two first short shafts 11 are provided on the outer side of the floating ring 2. The floating ring 2 is rotationally connected to the fixing ring 1 through the two first short shafts 11, and the axes of the two first short shafts 11 are in the same straight line. The support platform 3 is placed inside the floating ring 2, and two second short shafts 21 are provided on the outer side of the support platform 3. The support platform 3 is rotationally connected to the floating ring 2 through the two second short shafts 21, and the axes of the two second short shafts 21 are in the same straight line, and the first short shaft 11 is perpendicular to the second short shaft 21. First locking studs 13 and second locking studs 24 are respectively screwed on the fixing ring 1 and the floating ring 2. When the first locking studs 13 and the second locking studs 24 are screwed inwards, the tops of the first locking studs 13 and the second locking studs 24 can abut against the floating ring 2 or the support platform 3. A plurality of support feet 4 are provided on the circumferential side of the fixing ring 1. The support feet 4 can be of a fixed length or can be made adjustable in length through structures such as telescopic rods, which are prior arts that those skilled in the art should be able to select and use according to needs and will not be elaborated here. The cross - arranged first short shaft 11 and second short shaft 21 enable the support platform 3 to freely rotate around its own center, so that the support platform 3 can maintain a stable posture through its own center of gravity. When the location where the support feet 4 are clamped is uneven or on a slope, the support platform 3 can still maintain a predetermined posture under the action of its own center of gravity. Specifically, the support platform 3 includes a top surface 31 and a locking surface 32 extending downward from the periphery of the top surface 31. The locking surface 32 is a spherical surface. The second short shaft 21 is placed in the middle of the locking surface 32. The support platform 3 has an opening at the bottom, and a cover 33 is fixedly provided at the opening position. Through holes 34 are respectively opened on the cover 33 and the top surface 31 of the support platform 3, and the two through holes 34 are coaxially arranged. A screw rod 35 for connecting with the level instrument can pass through the two through holes 34, and a limiting edge 351 extends outward from the middle of the screw rod 35. When the screw rod 35 is not connected to the level instrument, the limiting edge 351 is at the lower limit position and fits with the upper surface of the cover 33. At this time, the screw rod 35 is perpendicular to the cover 33, and the plane where the cover 33 is located is parallel to the top surface 31. And in order to facilitate operating and holding the screw rod 35, a counterweight 3352 is provided at the bottom end of the screw rod 35. The counterweight 3352 can be fixedly connected to the end of the screw rod 35 by screwing, plugging, etc. At the same time, the center of gravity of the support platform 3 is lowered. Since the counterweight 3352 is at the lowest point and the screw rod 35 is perpendicular to the top surface 31, the support platform 3 is more inclined to be horizontal during movement. In this embodiment, the cover 33 is screwed to the edge of the opening, and through the machining accuracy, the connection line between the center of the top surface 31 and the center of the spherical locking surface 32 of the spherical surface is placed on the radius of the center of the spherical surface, preventing the influence on the accuracy of the top surface 31 of the support platform 3 caused by errors during the installation process, so as to ensure that the top surface 31 of the support platform 3 tends to be horizontal.
[0031] In this embodiment, the support platform 3 includes a top surface 31 and a locking surface 32 extending downward from the side of the top surface 31. The locking surface 32 is a spherical surface, and the center of the spherical surface of the locking surface 32 coincides with the center of the floating ring 2. When the second locking stud 24 is tightened, it can abut against the locking surface 32, and the axis of the second locking stud 24 is perpendicular to the axis of the second short axis 21, so that the distance between the position where the second locking stud 24 abuts and the second short axis 21 is the largest, making the force arm between the force application point of the floating ring 2 and the rotation axis the largest, thereby improving the fixing strength of the second locking stud 24. Similarly, a threaded hole 12 is formed in the fixing ring 1, and the first locking stud 13 is screwed into the threaded hole 12, and the axis of the threaded hole 12 is perpendicular to the connection line of the two first short axes 11. A locking portion 22 is provided on the floating ring 2. The connection line between the locking portion 22 and the center of the floating ring 2 is perpendicular to the axis of the first short axis 11. The outer surface of the locking portion 22 is a spherical surface, and the center of the spherical surface coincides with the center of the floating ring 2. When the first locking stud 13 is tightened, it can abut against the outer surface of the locking portion 22, thereby increasing the movement angle of the floating ring 2.
[0032] The second locking stud 24 is placed directly above the first short axis 11. Specifically, a threaded ear 23 is provided on the floating ring 2, and the threaded ear 23 is placed directly above the first short axis. The first locking stud 13 is screwed into the threaded ear 23 to reduce the influence on the center of gravity of the floating ring 2 due to the inconsistent lengths of the bolts.
[0033] In this embodiment, a limiting block 41 extends inward from the top of each support foot 4. When the support foot 4 rotates inward to the limit position, the limiting block 41 can abut against the lower surface of the support platform 3, so as to support the support platform 3 through the limiting block 41 after use and storage, preventing the support platform 3 and the floating ring 2 from rotating during storage and transportation, thereby facilitating transportation.
[0034] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A support frame for fixing a level, characterized in that: It includes a fixed ring, a floating ring and a supporting platform, wherein the floating ring is placed inside the fixed ring, and two first short shafts are provided on the outside of the floating ring, the floating ring is rotatably connected to the fixed ring through the two first short shafts, and the axes of the two first short shafts are in the same straight line; the supporting platform is placed inside the floating ring, and two second short shafts are provided on the outside of the supporting platform, the supporting platform is rotatably connected to the floating ring through the two second short shafts, and the axes of the two second short shafts are in the same straight line, and the first short shaft is perpendicular to the second short shaft; the fixed ring and the floating ring are respectively screwed with a first locking stud and a second locking stud, and when the first locking stud and the second locking stud are tightened inwardly, the top ends of the first locking stud and the second locking stud can rest against the floating ring or the supporting platform.
2. A support frame for fixing a level instrument according to claim 1, characterized in that: The floating ring is provided with a locking portion, and the line connecting the locking portion and the center of the floating ring is perpendicular to the axis of the first short axis. The outer surface of the locking portion is spherical, and the center of the spherical surface coincides with the center of the floating ring. The first locking stud can be against the outer surface of the locking portion when tightened.
3. The support frame for fixing a level instrument according to claim 1, characterized in that: The support platform includes a top surface and a locking surface extending downward from the side of the top surface. The locking surface is a spherical surface, and the center of the locking surface coincides with the center of the floating ring. The second locking stud can be against the locking surface when tightened.
4. The support frame for fixing a level instrument according to claim 1, characterized in that: The second locking stud is placed just above the first short shaft.
5. The support frame for fixing a level instrument according to claim 4, characterized in that: The floating ring is provided with a screw connection ear, and the screw connection ear is placed directly above the first short shaft, and the first locking stud is screwed to the screw connection ear.
6. The support frame for fixing a level instrument according to claim 3, characterized in that: A sealing cover is fixedly provided at the bottom of the support platform, and corresponding through holes are opened on the sealing cover and the top surface. A screw can pass through the sealing cover and the support platform through the two through holes, and the screw can move along its own axial direction. A limiting edge extends outward from the middle of the screw, and the outer diameter of the limiting edge is larger than the outer diameter of the through hole.
7. A support frame for fixing a level instrument according to claim 6, characterized in that: A counterweight block is fixedly arranged at the bottom end of the screw rod.
8. The support frame for fixing a level instrument according to claim 1, characterized in that: A plurality of supporting legs are arranged on the peripheral side of the fixing ring, and the top end of each supporting leg is hinged to the fixing ring respectively.
9. The support frame for fixing a level instrument according to claim 8, characterized in that: A limiting block is respectively extended inwardly from the top of each supporting foot, and when the supporting foot is rotated inwardly to an extreme position, the limiting block can abut against the lower surface of the supporting platform.