Leveling staff fixing device
By combining a tripod and clamp with a universal joint, the leveling rod can be precisely adjusted and stably fixed, solving the problem of poor stability in traditional fixing methods and improving the accuracy and stability of the measurement.
Patent Information
- Application Number
- CN202423319063.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-12-31
AI Technical Summary
The traditional method of fixing a leveling rod is prone to shifting during adjustment, resulting in poor stability and affecting the accuracy of measurement results.
The fixing device, which combines a tripod, a clamp, and a universal joint, uses an arc-shaped slider and a telescopic rod to achieve precise adjustment and stable fixation of the leveling rod, and uses a locking mechanism to maintain its vertical position.
It improves the stability and measurement accuracy of the leveling rod in a vertical state, reduces the influence of offset under external forces, and ensures the reliability of measurement results.
Smart Images
Figure CN223609794U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to level staff technical field, in particular to a level staff fixing device. BACKGROUND
[0002] In the field of civil engineering, building surveying and geological exploration, the stability and accuracy of the level staff, as a commonly used measuring tool, are crucial to the reliability of the measurement results. The traditional fixing method is to provide basic support by using a support or a tripod and to adjust the angle of the level staff by setting a cross universal joint or the like on the support or tripod, so that the level staff is in a vertical state. However, the distance between the rotation center in the adjustment process of the level staff and the locking structure for fixing the angle of the level staff is short, which results in that a slight adjustment will cause a large amount of deviation of the level staff, and thus it is inconvenient for the operator to operate. In addition, after the angle position is adjusted, the level staff is also prone to deviation due to the small force arm of the locking, which results in that the state of the level staff is unstable. SUMMARY
[0003] In view of the above prior art, the utility model provides a level staff fixing device, which is convenient to adjust and improves the stability of the level staff in a vertical state.
[0004] To achieve the above object, the technical scheme of the utility model embodiment is as follows:
[0005] A level staff fixing device comprises a tripod and a holder, the holder is detachably connected with the level staff, the tripod is provided with a stand column, the holder is provided with a first universal joint and a second universal joint, the first universal joint is connected with the upper part of the stand column, the second universal joint is connected with an extension rod, the other end of the extension rod is connected with an arc-shaped sliding block through a third universal joint, the arc-shaped sliding block is slidably connected with an arc-shaped groove arranged on the stand column, and the stand column is provided with a locking mechanism for fixing the position of the sliding block.
[0006] Further, the holder comprises an upper clamping piece, a lower clamping piece, a first connecting rod, a second connecting rod and a connecting plate, the upper clamping piece is fixedly connected with the first connecting rod, the lower clamping piece is connected with two second connecting rods, the first connecting rod is slidably connected on the inner side of the two second connecting rods, the second connecting rod is provided with the connecting plate, the connecting plate is provided with a locking screw, one end of the locking screw penetrates through the connecting plate and abuts against the first connecting rod, the other end of the locking screw is connected with the first universal joint, and the lower part of the connecting plate is connected with the second universal joint.
[0007] Further, the locking mechanism comprises a worm, a sector worm wheel and a knob, the worm is connected with the stand column, the sector worm wheel is connected with the arc-shaped sliding block, the worm is engaged with the sector worm wheel, and the knob drives the worm to rotate.
[0008] Furthermore, both the upper and lower clamping plates are provided with slots for engaging with the end of the leveling rod.
[0009] Furthermore, the telescopic rod includes a threaded rod and a threaded sleeve, the threaded rod and the threaded sleeve being engaged with each other by threads.
[0010] Furthermore, the cross-section of the arc-shaped slider and the arc-shaped groove is T-shaped.
[0011] Furthermore, the first universal joint, the second universal joint, and the third universal joint are ball joints. The ball shell of the first universal joint is connected to the locking screw, and a lever is provided on the side of the first universal joint. The ball shells of the second universal joint and the third universal joint are connected to the telescopic rod, and the outer surfaces of the second universal joint and the third universal joint are provided with anti-slip structures.
[0012] The beneficial effects of this invention are as follows: Through the coordinated use of the first universal joint, the second universal joint, the third universal joint, the arc-shaped slider, and the telescopic rod, precise adjustment of the leveling rod angle can be achieved, ensuring the leveling rod remains vertical. Especially when the arc-shaped slider has a large range of motion and the telescopic rod has a long extension length, the angle of rotation of the clamp and the leveling rod is small, thereby improving the adjustment accuracy. The tripod can be stably fixed to the ground, providing a solid foundation for the entire device. Simultaneously, by fixing the arc-shaped slider through the locking mechanism, the leveling rod can be kept in a stable vertical state, reducing the impact on the leveling rod even under external forces and ensuring measurement accuracy. Attached Figure Description
[0013] Figure 1 This is a three-dimensional structural diagram of a leveling rod fixing device according to an embodiment of this application;
[0014] Figure 2 For this application Figure 1 Enlarged structural diagram of region A in the middle;
[0015] Figure 3 This is a three-dimensional structural diagram of a leveling rod fixing device according to an embodiment of this application;
[0016] Figure 4 For this application Figure 3 A magnified structural diagram of region B in the middle;
[0017] Figure 5 This is a three-dimensional structural diagram of a leveling rod fixing device according to an embodiment of this application;
[0018] Figure 6 For this application Figure 5 A magnified structural diagram of region C in the middle;
[0019] BRIEF DESCRIPTION OF DRAWINGS
[0020] 1 tripod; 2 holder; 3 level vane; 4 stand; 5 first universal joint; 6 second universal joint; 7 telescopic rod; 8 third universal joint; 9 arc-shaped slider; 10 arc-shaped slot; 11 locking mechanism; 12 upper clamping piece; 13 lower clamping piece; 14 first connecting rod; 15 second connecting rod; 16 connecting plate; 17 locking screw; 18 worm; 19 sector worm wheel; 20 knob; 21 clamping groove; 22 threaded rod; 23 threaded sleeve; 24 push piece; 25 anti-slip structure; 26 gear set. DETAILED DESCRIPTION
[0021] The technical scheme of the present application is further described in detail below in combination with the drawings and specific embodiments. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. In the following description, the expression "some embodiments" describes a subset of all possible embodiments, but it should be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with each other without conflict.
[0022] It should be further noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element. The terms "vertical", "horizontal", "inner", "outer", "left", "right", and similar expressions used herein are for the purpose of illustration only and are not intended to be the only implementation.
[0023] Embodiment 1
[0024] Please refer to the drawings Figures 1-6The utility model provides a leveling staff 3 fixing device, including tripod 1 and holder 2, the holder 2 is detachably connected with leveling staff 3, the tripod is equipped with riser 4, the holder 2 is equipped with first universal joint 5 and second universal joint 6, the first universal joint 5 is connected with the upper portion of riser 4, the second universal joint 6 is connected with telescopic link 7, the other end of telescopic link 7 is connected with arc slide 9 through third universal joint 8, the arc slide 9 is slidably connected with the arc groove 10 arranged in the riser 4, and the riser 4 is equipped with locking mechanism 11 for fixing the position of the slide. The tripod 1 can be stably fixed on the ground, the riser 4 is arranged above the tripod 1, the upper portion of the riser 4 is connected with the holder 2 through the first universal joint 5, so that the upper portion of the holder 2 can rotate around the first universal joint 5. The lower portion of the holder 2 is connected through the second universal joint 6, the second universal joint 6 is connected with the telescopic link 7, the length of the telescopic link 7 can be telescopic, the other end of the telescopic link 7 is connected with the arc slide 9 through the third universal joint 8, the arc slide 9 can slide along the arc groove 10, and the projection point of the first universal joint 5 in the plane where the arc groove 10 is located is equal to the center of the arc groove 10. The first direction of the holder 2 can be adjusted by adjusting the arc slide 9, the second direction of the holder 2 can be adjusted by adjusting the telescopic link 7, the first direction and the second direction are perpendicular to each other, the holder 2 is in the vertical state, and the holder 2 is connected with the leveling staff 3, so that the angle of the leveling staff 3 can be conveniently adjusted, and the leveling staff 3 is in the vertical state. After the arc slide 9 is adjusted to the appropriate position, the arc block is fixed by using the locking mechanism 11, and the leveling staff 3 is kept in the vertical stable state. The utility model first uses the tripod to make the leveling staff 3 in the state close to the vertical state, and then uses the connecting assembly to accurately adjust, and the first universal joint 5 is away from the arc slide 9 and the telescopic link 7 by a certain distance, for example, 10cm, 20cm or 50cm, etc. In the case that the moving range of the arc slide 9 is large and the telescopic length of the telescopic link 7 is large, the angle of the holder 2 and the leveling staff 3 is small, so that the leveling staff 3 can be more accurately adjusted to the vertical state, and when the arc slide 9 and the telescopic link 7 are subjected to external force and slightly displaced, the influence on the leveling staff 3 is also small, and the leveling staff 3 is in the vertical stable state.
[0025] Specifically, the clamp 2 comprises an upper clamping piece 12, a lower clamping piece 13, a first connecting rod 14, a second connecting rod 15 and a connecting plate 16, the upper clamping piece 12 is fixedly connected with the first connecting rod 14, the lower clamping piece 13 is connected with two second connecting rods 15, the first connecting rod 14 is slidingly connected inside the two second connecting rods 15, the second connecting rod 15 is provided with the connecting plate 16, the connecting plate 16 is provided with a locking screw 17, one end of the locking screw 17 penetrates through the connecting plate 16 and abuts against the first connecting rod 14, the other end is connected with the first universal joint 5, and the lower portion of the connecting plate 16 is connected with the second universal joint 6. The first connecting rod 14 is located between the two second connecting rods 15, and the first connecting rod 14 is slidingly connected with the second connecting rod 15, and the sliding direction of the first connecting rod 14 and the second connecting rod 15 is the length direction of the leveling rod 3. The upper clamping piece 12 and the lower clamping piece 13 are tightly connected with both ends of the leveling rod 3, and the relative position of the first connecting rod 14 and the second connecting rod 15 can be locked through the locking screw 17, specifically, when the locking screw 17 penetrates through the connecting plate 16 and abuts against the first connecting rod 14, the first connecting rod 14 is tightly pressed by the locking screw 17, so that the first connecting rod 14 is prevented from sliding relative to the connecting plate 16, and the connecting plate 16 is fixedly connected with the second connecting rod 15, so that the relative position of the first connecting rod 14 and the second connecting rod 15 is fixed, and the clamp 2 tightly connects the leveling rod 3. The clamp 2 of the utility model can adjust the length, adapt to leveling rods 3 of different lengths, and the clamp 2 is located at the rear of the leveling rod 3, so that the reading of the leveling rod 3 is not affected.
[0026] Specifically, the locking mechanism 11 comprises a worm 18, a sector worm wheel 19 and a knob 20, the worm 18 is connected with the stand 4, the sector worm wheel 19 is connected with the arc-shaped sliding block 9, the worm 18 is engaged with the sector worm wheel 19, and the knob 20 drives the worm 18 to rotate. When the knob 20 rotates, the worm 18 is driven to rotate through the gear set 26, and since the worm 18 is engaged with the sector worm wheel 19, the arc-shaped sliding block 9 connected with the sector worm wheel 19 is driven to move, so that the angle of the leveling rod 3 in the first direction is adjusted. After the angle is adjusted, the sector worm wheel 19 cannot drive the worm 18 to rotate, so that the angle of the leveling rod 3 is fixed. The knob 20 can be directly connected with the worm 18, and the knob 20 is used to drive the worm 18 to rotate. The gear set 26 can also be arranged, and the knob 20 drives the worm 18 to rotate through the gear set 26. Since the gear set 26 is arranged, the knob 20 is not coaxial with the worm 18, so that the knob 20 can be arranged at a position far away from the sector worm 18, the radius of the knob 20 can be larger, so that the radius of the knob 20 is larger than the radius of the worm 18, and the knob 20 is convenient to rotate.
[0027] Specifically, the upper clamping piece 12 and the lower clamping piece 13 are both provided with a clamping groove 21 for clamping the end of the leveling scale 3. The clamping groove 21 is embedded with the end of the leveling scale 3, thereby improving the fixing effect of the upper clamping piece 12 and the lower clamping piece 13 on the leveling scale 3.
[0028] Specifically, the telescopic rod 7 comprises a threaded rod 22 and a threaded sleeve 23, and the threaded rod 22 and the threaded sleeve 23 are matched with each other through threads. By rotating the threaded rod 22 or the threaded sleeve 23, when the threaded rod 22 and the threaded sleeve 23 rotate relatively, the threaded rod 22 and the threaded sleeve 23 are relatively displaced in the axial direction, thereby adjusting the length of the telescopic rod 7, so that the leveling scale 3 is adjusted in the second direction.
[0029] Specifically, the cross section of the arc-shaped sliding block 9 and the arc-shaped groove 10 is T-shaped. The arc-shaped sliding block 9 can be prevented from being separated from the arc-shaped groove 10.
[0030] Embodiment 2
[0031] Please refer to the accompanying drawings Figures 1-6 The difference between the embodiment and the embodiment 1 is that the first universal joint 5, the second universal joint 6 and the third universal joint 8 are ball head universal joints, the ball shell of the first universal joint 5 is connected with the locking screw 17, the side surface of the first universal joint 5 is provided with a knob 24, the ball shell of the second universal joint 6 and the third universal joint 8 is connected with the telescopic rod 7, and the outer surface of the second universal joint 6 and the third universal joint 8 is provided with an anti-skid structure 25. The knob 24 on the first universal joint 5 is rotated, the locking screw 17 is screwed and rotated, the locking screw 17 is in contact with the first connecting rod 14 and is tightened, thereby fixing the length of the clamping device 2, and the leveling scale 3 is fixed by the clamping device 2. The length of the clamping device 2 can be adjusted, so that the leveling scale 3 with different lengths can be used. The screw can be conveniently adjusted by the knob 24, so that the screw can clamp the first connecting rod 14. The telescopic rod 7 is rotated by rotating the first universal joint 5 and the second universal joint 6, thereby adjusting the length of the telescopic rod 7, adjusting the second direction of the leveling scale 3, and adjusting the leveling scale 3 to the vertical state.
[0032] The above is only a specific implementation manner of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. The protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A leveling rod fixing device, characterized in that, The tripod and the holder are detachably connected with the leveling scale, the tripod is provided with a stand column, the holder is provided with a first universal joint and a second universal joint, the first universal joint is connected with the upper part of the stand column, the second universal joint is connected with a telescopic rod, the other end of the telescopic rod is connected with an arc-shaped sliding block through a third universal joint, the arc-shaped sliding block is slidably connected with an arc-shaped groove arranged on the stand column, and the stand column is provided with a locking mechanism for fixing the position of the sliding block.
2. A levelling rod holder according to claim 1, characterised in that The holder comprises an upper clamping piece, a lower clamping piece, a first connecting rod, a second connecting rod and a connecting plate, the upper clamping piece is fixedly connected with the first connecting rod, the lower clamping piece is connected with two second connecting rods, the first connecting rod is slidably connected on the inner side of the two second connecting rods, the second connecting rod is provided with the connecting plate, the connecting plate is provided with a locking screw, one end of the locking screw penetrates through the connecting plate and abuts against the first connecting rod, the other end of the locking screw is connected with the first universal joint, and the lower part of the connecting plate is connected with the second universal joint.
3. A leveling rod holder as in claim 1, wherein: The locking mechanism comprises a worm, a sector worm wheel and a knob, the worm is connected with the stand column, the sector worm wheel is connected with the arc-shaped sliding block, the worm is engaged with the sector worm wheel, and the knob drives the worm to rotate.
4. A levelling rod holder according to claim 2, characterised in that The upper clamping piece and the lower clamping piece are both provided with a clamping groove for clamping the end of the leveling scale.
5. A leveling rod holder as in claim 1, wherein: The telescopic rod comprises a threaded rod and a threaded sleeve, and the threaded rod and the threaded sleeve are matched with each other through threads.
6. A leveling rod holder as in claim 1, wherein: The cross section of the arc-shaped sliding block and the arc-shaped groove is T-shaped.
7. A levelling rod holder according to claim 2, characterised in that The first universal joint, the second universal joint and the third universal joint are ball head universal joints, the spherical shell of the first universal joint is connected with the locking screw, the side surface of the first universal joint is provided with a push piece, the spherical shells of the second universal joint and the third universal joint are connected with the telescopic rod, and the outer surfaces of the second universal joint and the third universal joint are both provided with anti-skid structures.