Supporting structure of level gauge

Abstract

The utility model provides a supporting structure of a level gauge, which relates to the field of roads and bridges and comprises a chassis, an adjusting leg, a knob plate, an unlocking turntable and a spring, a stand column is welded to the upper side face of the chassis, a mounting disc is welded to the top end of the stand column, and a threaded column is welded to the center of the lower side face of the chassis. The top end of the adjusting leg is rotationally connected with a rotating sleeve; a sliding disc is rotationally connected to the bottom end of the knob disc, and a connecting supporting rod is hinged to the outer side face of the sliding disc; a locking block is welded to one end of the spring, and a mounting disc is welded to the other end of the spring. A pushing and pressing disc is welded to the upper side face of the unlocking rotary disc. Through the arrangement of a spring, a locking block, a mounting disc, a threaded column, a knob disc and a connecting supporting rod, the mounting operation process of the leveling instrument is simplified, and the measurement accuracy of the leveling instrument under horizontal calibration is ensured; the problems that a traditional level gauge triangular support is complex in installation structure and measurement efficiency is affected due to the fact that the supporting legs are prone to mistakenly touching and shifting after being unfolded are solved.

Description

Technical Field

[0001] The utility model belongs to the field of road and bridge, and more specifically, particularly relates to a supporting structure of a level instrument. Background Art

[0002] A level instrument is an optical measuring instrument that uses the leveling principle to establish a horizontal line of sight to measure the height difference between two points on the ground, and is commonly used in engineering surveys and topographic surveys within construction sites. Currently, a level instrument usually consists of a telescope and a leveling instrument. Among them, multiple sets of threaded holes are provided on the base of the leveling instrument. The leveling instrument is installed by screwing multiple sets of bolts into the threaded holes, and the threaded holes are butt-jointed and installed at the installation through holes of the placement table of the triangular support. It can be seen that the bolt installation structure of the traditional level instrument on the triangular support is relatively complex. Each time the level instrument is disassembled and assembled, the bolts in the threaded holes of the base of the leveling instrument need to be screwed. Since the bolts are separated from the leveling instrument after being removed, if the removed bolts are not stored in time, the bolt components are extremely likely to be lost at the construction site. In addition, the triangular support of the level instrument only consists of three sets of legs that can be flexibly flipped and a placement table. When the three sets of legs of the triangular support are opened, there is no pulling restraint. During the measurement process, due to ground vibration or accidental collision of the leg structure by the user, the level of the level instrument is extremely likely to be offset, and the level instrument needs to be leveled again, which affects the measurement accuracy of the structure and the on-site measurement efficiency. Content of the Utility Model

[0003] In order to solve the above technical problems, the utility model provides a supporting structure of a level instrument to solve the problems of the complex installation structure of the triangular support of the traditional level instrument and the easy accidental collision and offset of the legs after they are opened, which affect the measurement efficiency.

[0004] The utility model provides a supporting structure of a level instrument, including a level instrument and a guiding support rod; a leveling base is installed on the lower side of the level instrument; three through holes are provided on the lower side of the leveling base, the leveling base is placed on the upper side of the installation disk, and the installation disk is welded and connected to the guiding support rod; it also includes a chassis, adjusting legs, a turning knob disk, an unlocking turntable and a spring; a column is welded and connected to the upper side of the chassis, the top of the column is welded and connected to the installation disk, three support leg frames are hinged to the lower side of the chassis, an adjusting threaded rod is welded and connected to the inner sides of the three support leg frames, a threaded column is welded and connected to the center of the lower side of the chassis, and a limiting disk is welded and connected to the lower side of the threaded column; a rotating sleeve is rotatably connected to the top of the adjusting leg; a sliding disk is rotatably connected to the bottom end of the turning knob disk, a connecting support rod is hinged to the outer side of the sliding disk, and the other end of the connecting support rod is hinged to the support leg frame; one end of the spring is welded and connected to a locking block, and the other end of the spring is welded and connected to the installation disk; a pressing disk is welded and connected to the upper side of the unlocking turntable, and the pressing disk is rotatably connected to the installation disk on the upper side.

[0005] In at least some embodiments, the number of the locking blocks is three groups. The locking blocks are distributed in an annular array around the vertical central axis of the mounting disc. Through holes are provided on the front side surfaces of the locking blocks, and the guiding support rods are inserted into the through holes of the locking blocks. Each group of locking blocks has an inverted L-shaped structure, and the upper side surface of each group of locking blocks is an inclined surface structure.

[0006] In at least some embodiments, the mounting disc has a disc-shaped structure. Three groups of cylindrical convex columns are provided on the upper side surface of the mounting disc. The cylindrical convex columns are distributed in an annular array around the vertical central axis of the mounting disc. The three groups of cylindrical convex columns of the mounting disc are inserted into three through holes on the lower side surface of the leveling seat. Three through grooves are provided on the upper side surface of the mounting disc. The through grooves of the mounting disc are distributed in an annular array around the vertical central axis of the mounting disc. A guiding support rod is welded and connected in each through groove of the mounting disc, and the locking block is inserted into the through groove of the mounting disc.

[0007] In at least some embodiments, a vertically penetrating threaded through hole is provided at the central position of the upper side surface of the rotary knob disc, and the outer side surface of the threaded column is threadedly engaged in the threaded through hole of the rotary knob disc.

[0008] In at least some embodiments, a deep hole is provided at the central part of the top end of the adjusting leg. An adjusting threaded rod is embedded inside the deep hole. The bottom of the rotating sleeve is rotatably connected to the top end of the deep hole of the adjusting leg. Through grooves are provided on both the left and right sides of the deep hole of the adjusting leg, and the support leg frame is inserted into the through groove of the adjusting leg.

[0009] In at least some embodiments, a threaded through hole is provided at the central position of the top end of the rotating sleeve, and the outer side surface of the adjusting threaded rod is threadedly engaged in the threaded through hole of the rotating sleeve.

[0010] In at least some embodiments, the pressing disc has a triangular disc structure, and the three corners of the triangular disc structure of the pressing disc are arc surface structures.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. In the utility model, through the docking and insertion structure of the spring-pressed L-shaped locking block and the three groups of convex columns on the upper side surface of the mounting disc in the three groups of through holes on the lower side surface of the leveling seat, the locking block performs upper and lower locking and limiting on the leveling seat, and the convex column of the mounting disc performs horizontal offset limiting on the leveling seat, realizing the quick plug-in and locking installation of the leveling instrument and the leveling seat on the mounting disc, abandoning the traditional installation method of using multiple groups of bolts for the leveling instrument on the tripod, simplifying the installation operation process of the leveling instrument, and avoiding the situation of loss of bolt parts.

[0013] 2. In the utility model, a threaded engagement transmission structure formed by a threaded post in a threaded through-hole of a rotary knob disc is utilized to enable the rotary knob disc to drive a sliding disc, a chassis, a connecting support rod, and a support leg frame to form a sliding link motion mechanism for operation, allowing the sliding disc to push or pull the support leg frame outward to expand or inward to retract through the connecting support rod. Due to the thread self-locking characteristic formed by the engagement between the external thread of the threaded post and the internal thread of the threaded through-hole of the rotary knob disc, the rotary knob disc locks the turning position of the support leg frame to prevent the support leg frame from flipping and shifting due to external collisions, ensuring the measurement accuracy of the level under horizontal calibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the present utility model.

[0015] Figure 2 is a left-view structural schematic diagram of the present utility model.

[0016] Figure 3 is a rear-view structural schematic diagram of the present utility model.

[0017] Figure 4 is a top-view structural schematic diagram of the present utility model.

[0018] Figure 5 is a bottom-up side-view structural schematic diagram of the present utility model.

[0019] Figure 6 is a right-view sectional structural schematic diagram of the present utility model.

[0020] Figure 7 is the Figure 6 enlarged structural schematic diagram of part A in the present utility model.

[0021] Figure 8 is the Figure 6 enlarged structural schematic diagram of part B in the present utility model.

[0022] Figure 9 is the Figure 6 enlarged structural schematic diagram of part C in the present utility model.

[0023] Figure 10 is the structural schematic diagram of the present utility model in the state where the level is removed.

[0024] Reference numerals: 1, leveling instrument; 2, leveling base; 3, mounting disc; 4, chassis; 5, column; 6, adjusting leg; 7, adjusting threaded rod; 8, rotating sleeve; 9, connecting support rod; 10, limiting disc; 11, rotary knob disc; 12, threaded post; 13, unlocking turntable; 14, locking block; 15, pressing disc; 16, sliding disc; 17, spring; 18, guiding support rod; 19, support leg frame. DETAILED DESCRIPTION OF THE INVENTION

[0025] The following further describes in detail the implementation manners of the present utility model in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0026] As Figures 1 - 10 shown, the present utility model provides a supporting structure for a level, including a level instrument 1 and a guiding support rod 18; a leveling base 2 is installed on the lower side of the level instrument 1; three groups of through holes are provided on the lower side of the leveling base 2, and the leveling base 2 is placed on the upper side of the mounting plate 3, and the mounting plate 3 is welded to the guiding support rod 18; it further includes a chassis 4, adjusting legs 6, a rotary knob disk 11, an unlocking rotary disk 13 and a spring 17; a column 5 is welded to the upper side of the chassis 4, and the top of the column 5 is welded to the mounting plate 3, three groups of support leg frames 19 are hinged to the lower side of the chassis 4, an adjusting threaded rod 7 is welded to the inner sides of the three groups of support leg frames 19, a threaded column 12 is welded to the center of the lower side of the chassis 4, and a limiting disk 10 is welded to the lower side of the threaded column 12; a rotating sleeve 8 is rotatably connected to the top of the adjusting leg 6; a sliding disk 16 is rotatably connected to the bottom end of the rotary knob disk 11, a connecting support rod 9 is hinged to the outer side of the sliding disk 16, and the other end of the connecting support rod 9 is hinged to the support leg frame 19; one end of the spring 17 is welded to a locking block 14, and the other end of the spring 17 is welded to the mounting plate 3; a pressing disk 15 is welded to the upper side of the unlocking rotary disk 13, and the pressing disk 15 is rotatably connected to the mounting plate 3 on the upper side.

[0027] In the embodiments of the present disclosure, the number of the locking blocks 14 is three groups, the locking blocks 14 are distributed in an annular array around the vertical central axis of the mounting plate 3, through holes are provided on the front side of the locking blocks 14, the guiding support rod 18 is inserted into the through holes of the locking blocks 14, each group of locking blocks 14 is an inverted L-shaped structure, and the upper side of each group of locking blocks 14 is an inclined surface structure. Through the inclined surface structure on the upper side of the locking blocks 14, when the edge part of the lower side of the leveling base 2 vertically presses down the locking blocks 14, the three groups of locking blocks 14 are pushed outwards synchronously. When the lower side of the leveling base 2 contacts the upper side of the mounting plate 3, the spring 17 pushes the inverted L-shaped locking blocks 14 to move along the guiding support rod 18 towards the vertical central axis of the mounting plate 3, and the L-shaped locking blocks 14 perform the locking work of limiting the leveling base 2 up and down.

[0028] In the embodiment of the present disclosure, the mounting disk 3 has a disk-shaped structure. Three sets of cylindrical convex columns are provided on the upper side surface of the mounting disk 3. The cylindrical convex columns are distributed in an annular array around the vertical central axis of the mounting disk 3. The three sets of cylindrical convex columns of the mounting disk 3 are inserted into three through holes on the lower side surface of the leveling base 2. The cylindrical convex columns of the mounting disk 3 perform horizontal limit on the leveling base 2, preventing the leveling base 2 from horizontally shifting on the mounting disk 3 and ensuring the stable placement of the leveling base 2 on the upper side surface of the mounting disk 3. Three through grooves are provided on the upper side surface of the mounting disk 3. The through grooves of the mounting disk 3 are distributed in an annular array around the vertical central axis of the mounting disk 3. A guiding support rod 18 is welded and connected in each through groove of the mounting disk 3. The locking block 14 is inserted into the through groove of the mounting disk 3. The bottom of the locking block 14 extends out of the lower side of the through groove of the mounting disk 3. The locking block 14 moves directionally along the through groove of the mounting disk 3, so that the three locking blocks 14 respectively clamp and release the base part of the leveling base 2 stably along the through grooves of the mounting disk 3.

[0029] In the embodiment of the present disclosure, a vertically penetrating threaded through hole is provided at the center position of the upper side surface of the rotary knob disk 11. The outer side surface of the threaded column 12 is threadedly engaged in the threaded through hole of the rotary knob disk 11. During the rotation of the rotary knob disk 11, the sliding disk 16 is driven to move vertically up and down along the threaded column 12, so that the sliding disk 16 pushes or pulls three connecting support rods 9 hinged to the outer side surface to push or retract the three support leg frames 19 synchronously. The connecting support rod 9 performs flipping limit and pulling on the support leg frame 19 to prevent the support leg frame 19 from flipping and deviating due to external collision.

[0030] In the embodiment of the present disclosure, a deep hole is provided at the center part of the top end of the adjusting leg 6. An adjusting threaded rod 7 is embedded inside the deep hole, reserving a telescopic movement space for the adjusting leg 6 through the deep hole. The bottom of the rotating sleeve 8 is rotatably connected to the top end of the deep hole of the adjusting leg 6. Through grooves are provided on both the left and right sides of the deep hole of the adjusting leg 6. The support leg frame 19 is inserted into the through groove of the adjusting leg 6, enabling the adjusting leg 6 to telescopically move directionally along the support leg frame 19.

[0031] In the embodiment of the present disclosure, a threaded through hole is provided at the center position of the top end of the rotating sleeve8. The outer side surface of the adjusting threaded rod 7 is threadedly engaged in the threaded through hole of the rotating sleeve 8. During the rotation of the rotating sleeve 8, the adjusting leg x is driven to telescopically move along the support leg frame 19, enabling the adjusting leg 6 to perform horizontal support adjustment according to the unevenness of the on-site terrain surface.

[0032] In the embodiment of the present disclosure, the pressing disk 15 has a triangular disk structure. The triangular positions of the triangular disk structure of the pressing disk 15 are arc surface structures. By making the distance between the triangular positions of the triangular disk structure of the pressing disk 15 relative to the center point of the triangular disk greater than the distance between the three side positions of the triangular disk structure of the pressing disk 15 relative to the center point of the triangular disk, the arc surface at the triangular positions of the pressing disk 15 presses against the three locking blocks 14 to move outward along the guiding support rod 18, causing the locking blocks 14 to disengage from the leveling base 2 and completing the quick unlocking work of the locking blocks 14.

[0033] Specific usage method and function of this embodiment:

[0034] When the utility model is used for erecting the tripod, manually rotate the knob disk 11. Since the outer side surface of the threaded column 12 is threadedly engaged in the threaded through hole of the knob disk 11, the knob disk 11 drives the sliding disk 16 to move downward along the threaded column 12. The sliding disk 16 pushes the three groups of connecting support rods 9 hinged on the outer side surface to perform a flipping motion. The three groups of connecting support rods 9 then push the three groups of support leg frames 19 to flip outward. At this time, the three groups of support leg frames 19 open. Then, place the three groups of support leg frames 19 on the ground. Manually rotate the rotating sleeve 8. Since the outer side surface of the adjusting threaded rod 7 is threadedly engaged in the threaded through hole of the rotating sleeve 8, the rotating sleeve 8 drives the adjusting leg 6 to telescopically move along the support leg frame 19, completing the horizontal adjustment of the mounting disk 3 by the three groups of adjusting legs 6. When installing the level on the tripod, lift the leveling base 2 installed on the lower side surface of the level instrument 1 and place it on the upper side of the mounting disk 3. The three through holes on the lower side surface of the leveling base 2 are vertically opposite to the three convex columns on the upper side surface of the mounting disk 3. Then, vertically press and move the leveling base 2 downward. At this time, the edge part on the lower side surface of the leveling base 2 presses the inclined surface structure on the upper side surface of the locking block 14. The leveling base 2 pushes the three groups of locking blocks 14 to move outward synchronously along the through grooves of the guiding support rod 18 and the mounting disk 3 until the edge part on the lower side surface of the leveling base 2 completely disengages from the inclined surface structure of the locking block 14. The locking block 14 moves toward the center position of the mounting disk 3 along the guiding support rod 18 under the elastic action of the spring 17 until the L-shaped structure of the locking block 14 fits on the outer side surface and the part near the edge on the upper side surface of the base part of the leveling base 2. The inverted L-shaped structure of the locking block 14 performs upper and lower limit locking on the leveling base 2. At this time, the convex column of the mounting disk 3 is completely inserted into the through hole of the leveling base 2, and the convex column of the mounting disk 3 performs horizontal limit work on the leveling base 2. The leveling base 2 is locked on the upper side surface of the mounting disk 3 by the locking block 14. When removing the level from the tripod, manually rotate the unlocking turntable 13. The unlocking turntable 13 drives the pressing disk 15 to rotate. The arc surface structure at the triangular position of the pressing disk 15 pushes the three groups of locking blocks 14 to move outward synchronously along the through grooves of the guiding support rod 18 and the mounting disk 3. The locking block 14 with an L-shaped structure disengages from the leveling base 2. Then, lift the level instrument 1 and the leveling base 2 upward and remove them.

[0035] The installation methods, connection methods or setting methods of all the above components are common mechanical methods, such as welding, threaded connection, screw connection, etc. And the specific structures, models and coefficient indexes of all its components are its own technologies. As long as the beneficial effects can be achieved, they can be implemented. The above-mentioned level instrument 1 is a common device on the market. When purchased and used, it only needs to be connected according to the user manual purchased together to be used. Therefore, it will not be elaborated here.

[0036] The technical solution of the present utility model is not limited to the scope of the embodiments of the present utility model, and the technical content not described in detail in the present utility model is well-known technology.

Claims

1. A supporting structure of a level instrument, comprising a level instrument (1) and a guiding support rod (18); a leveling base (2) is installed on the lower side of the level instrument (1); three groups of through holes are provided on the lower side of the leveling base (2), the leveling base (2) is placed on the upper side of a mounting plate (3), and the mounting plate (3) is welded to the guiding support rod (18); characterized in that: It further includes a chassis (4), adjusting legs (6), a knob disk (11), an unlocking turntable (13) and a spring (17); a column (5) is welded and connected to the upper side surface of the chassis (4), the top end of the column (5) is welded and connected to a mounting disk (3), three groups of support leg frames (19) are hinged to the lower side surface of the chassis (4), an adjusting threaded rod (7) is welded and connected to the inner sides of the three groups of support leg frames (19), a threaded column (12) is welded and connected to the central part of the lower side surface of the chassis (4), and a limiting disk (10) is welded and connected to the lower side surface of the threaded column (12); the top end of the adjusting leg (6) is rotatably connected to a rotating sleeve (8); the bottom end of the knob disk (11) is rotatably connected to a sliding disk (16), a connecting support rod (9) is hinged to the outer side surface of the sliding disk (16), and the other end of the connecting support rod (9) is hinged to a support leg frame (19); one end of the spring (17) is welded and connected to a lock block (14), and the other end of the spring (17) is welded and connected to the mounting disk (3); a pressing disk (15) is welded and connected to the upper side surface of the unlocking turntable (13), and the upper side surface of the pressing disk (15) is rotatably connected to the mounting disk (3).

2. The supporting structure of a level as described in claim 1, characterized in that: The number of the lock blocks (14) is three, the lock blocks (14) are distributed in an annular array around the vertical central axis of the mounting disk (3), through holes are provided on the front side surfaces of the lock blocks (14), a guiding support rod (18) is inserted into the through holes of the lock blocks (14), each group of lock blocks (14) is of an inverted L-shaped structure, and the upper side surface of each group of lock blocks (14) is of an inclined surface structure.

3. The supporting structure of a level as described in claim 1, characterized in that: The mounting disk (3) is of a disk-shaped structure, three cylindrical convex columns are provided on the upper side surface of the mounting disk (3), the cylindrical convex columns are distributed in an annular array around the vertical central axis of the mounting disk (3), the three cylindrical convex columns of the mounting disk (3) are inserted into three through holes on the lower side surface of the leveling seat (2), three through grooves are provided on the upper side surface of the mounting disk (3), the through grooves of the mounting disk (3) are distributed in an annular array around the vertical central axis of the mounting disk (3), a guiding support rod (18) is welded and connected in each through groove of the mounting disk (3), and the lock blocks (14) are inserted into the through grooves of the mounting disk (3).

4. The supporting structure of a level as described in claim 1, characterized in that: A vertically through threaded through hole is provided at the central position of the upper side surface of the knob disk (11), and the outer side surface of the threaded column (12) is threadedly engaged in the threaded through hole of the knob disk (11).

5. The supporting structure of a level as described in claim 1, characterized in that: A deep hole is provided at the central part of the top end of the adjusting leg (6), an adjusting threaded rod (7) is embedded in the deep hole, the bottom of the rotating sleeve (8) is rotatably connected to the top end of the deep hole of the adjusting leg (6), through grooves are provided on both the left and right sides of the deep hole of the adjusting leg (6), and the support leg frame (19) is inserted into the through groove of the adjusting leg (6).

6. The supporting structure of a level as described in claim 1, characterized in that: A threaded through hole is provided at the central position of the top end of the rotating sleeve (8), and the outer side surface of the adjusting threaded rod (7) is threadedly engaged in the threaded through hole of the rotating sleeve (8).

7. The supporting structure of a level as described in claim 1, characterized in that: The pressing disk (15) is of a triangular disk structure, and the triangular positions of the triangular disk structure of the pressing disk (15) are of arc surface structures.

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