A combined level for measurement

Abstract

This invention relates to the field of measuring instrument technology and discloses a combined level for measurement, comprising: a tripod; a support platform at the top of the tripod; and a mounting platform at the top of the support platform, the mounting platform being mounted on the top of the support platform via a detachable connection structure. Compared with the prior art, this application first addresses the problem that existing levels mainly rely on the tripod for overall leveling, and require repeated recalibration when the ground is uneven or the support legs are disturbed. By setting a central pivot point between the support platform and the mounting platform, and setting at least three adjustment mechanisms around the support platform, in conjunction with an inclination sensor on the level body, the mounting platform forms a detectable, rotatable, and calibrable leveling structure at the top of the support platform. When the ground support state changes and causes the mounting platform to tilt, the height of the corresponding support point can be directly adjusted, allowing the mounting platform to correct its posture around the central pivot point, thereby reducing the reliance on repeated adjustments of the tripod.

Description

Technical Field

[0001] This invention relates to the field of measuring instrument technology, and specifically to a combined level for measuring. Background Technology

[0002] A level is a commonly used instrument in engineering surveying for establishing a horizontal line of sight and determining elevation differences between different locations. It typically consists of an upper measuring assembly and a lower support assembly. In use, the support assembly must first be unfolded and leveled before readings are taken at different measuring points through the telescope tube. For modular level instruments, the structure usually also involves the assembly and cooperation of mounting bases, functional seats, and multiple support components. Therefore, the overall stability and leveling capability of the instrument directly affect the measurement accuracy.

[0003] Existing modular engineering surveying levels typically employ multiple extended legs for support to improve operational stability, and are equipped with bubble levels or electronic levels to calibrate and monitor the overall levelness. In some solutions, if the levelness of the entire instrument is detected, indicator lights, signals, or restrictions on the rotation of the telescope tube will be used to prevent the operator from continuing measurements in an uneven state.

[0004] However, the core of this type of solution still lies in the alert or shutdown control after leveling. The support relationship between the mounting base and the functional base is usually basically fixed after initial leveling. When there is a slight change in the contact state between the support feet and the ground, or when the entire machine is subjected to collision, sinking, or lateral disturbance during measurement, the existing structure can often only issue an alert or prevent continued observation after leveling, but cannot actively compensate for the attitude of the upper measurement components. This leads to changes in the support state of the mounting base, and the functional base and telescope tube shifting relative to the horizontal reference, causing the entire machine to change from a measurable state to an leveled state. Subsequently, manual recalibration is required before measurement can continue, which not only affects the continuity of measurement but also reduces the efficiency of on-site measurement. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a combined level for measurement, aiming to alleviate the aforementioned problems to at least some extent.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: A combined level for measuring, comprising: Tripod; A support platform located at the top of the triangular bracket; A mounting platform is provided on the top of the support, and the mounting platform is provided on the top of the support through a detachable connection structure; The level body is located on top of the mounting platform; An adjustment component provided on the support is used to correct the horizontal state of the mounting platform; A central pivot point is provided between the mounting platform and the support platform, and the mounting platform can swing relative to the support platform around the central pivot point. The adjustment component includes an adjustment mechanism and a tilt sensor. The tilt sensor is mounted on the level body and is used to detect the tilt state of the mounting platform.

[0007] Preferably, the adjustment mechanism includes at least three mechanisms, which are distributed at intervals along the circumference of the support. One end of each adjustment mechanism is connected to the support, and the other end is connected to or abuts against the mounting platform. These mechanisms are used to adjust the height of the corresponding support point of the mounting platform relative to the support, thereby correcting the horizontal state of the mounting platform.

[0008] Preferably, the triangular bracket includes a fixed end and a movable end. An adjusting bolt is threaded onto the movable end, and multiple legs are rotatably connected to the outer wall of the movable end. A connecting rod that is rotatably connected to the legs is rotatably connected to the fixed end.

[0009] Preferably, a telescopic leg is slidably connected to the support leg, and the telescopic leg has multiple fixing ports. A threaded tube is connected to the support leg, and a positioning bolt is threadedly connected to the threaded tube. The positioning bolt is inserted into one of the fixing ports.

[0010] Preferably, the bottom of the mounting platform is provided with a connecting cavity, the top of the support is threaded with a connecting bolt, and the top of the connecting bolt is fixed with a ball head that mates with the connecting cavity.

[0011] Preferably, the adjustment mechanism includes an annular groove formed on the top of the support, a plurality of adjustment tubes are provided in the annular groove, a top rod is slidably connected in the adjustment tube, and a lead screw is provided in the adjustment tube, the lead screw being threadedly engaged with the top rod.

[0012] Preferably, a first motor is provided inside the regulating tube, and the output shaft of the first motor is connected to the lead screw drive.

[0013] Preferably, the adjustment mechanism further includes a first gear rotatably connected to the annular groove, the adjustment tube being fixed to the top of the first gear, a second motor being provided on the support, and a second gear meshing with the first gear being drivenly connected to the output shaft of the second motor.

[0014] Preferably, a plurality of retaining rods are slidably connected to the connecting bolt, a first spring is connected between the retaining rod and the connecting bolt, a push rod is slidably connected inside the connecting bolt, a second spring is connected between the push rod and the connecting bolt, a push plate is provided inside the connecting bolt, a push bar is rotatably connected to the push plate, and the other end of the push bar is rotatably connected to the push rod.

[0015] Preferably, the connecting bolt contains a cylinder, and the output shaft of the cylinder is connected to the push plate.

[0016] In summary, the present invention has the following main beneficial effects: Compared with existing technologies, this application first addresses the problem that existing levels mainly rely on the tripod for overall leveling, and require repeated recalibration when the ground is uneven or the support legs are disturbed. By setting a central pivot point between the support and the mounting platform, and setting at least three adjustment mechanisms around the support, along with an inclination sensor on the level body, the mounting platform forms a leveling structure on the top of the support that can be detected, rotated, and corrected. When the mounting platform tilts due to changes in the ground support state, the height of the corresponding support point can be directly adjusted, allowing the mounting platform to correct its posture around the central pivot point. This reduces the reliance on repeated adjustments of the tripod and improves the targeting, continuity, and measurement efficiency of leveling.

[0017] Compared with the prior art, this application achieves synchronous deployment and length adjustment of the tripod through the cooperation of the movable end, support legs, connecting rod, and telescopic legs. Furthermore, through the cooperation of the annular groove, movable adjusting tube, top rod, lead screw, first motor, and second motor, the adjustment mechanism can not only adjust the support height at the corresponding position on the mounting platform but also adjust the position of action along the circumference of the support platform. In addition, through the cooperation of the holding rod, first spring, push rod, push plate, push bar, and cylinder, the current angle is mechanically maintained after the mounting platform is leveled. This improves the adaptability to different tilt orientations and enhances the stability of the posture after leveling, giving the entire machine the advantages of retractable volume, more precise adjustment, and more stable measurement. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the support structure of the present invention; Figure 3 This is a schematic diagram of the support structure of the present invention; Figure 4 This is a cross-sectional schematic diagram of the support structure of the present invention; Figure 5 This is a schematic diagram of the linkage structure of the present invention; Figure 6 This is a schematic diagram of the connecting bolt structure of the present invention; Figure 7 yes Figure 6 A magnified schematic diagram of the local structure at point A.

[0019] Figure label: 100. Triangular bracket; 101. Support; 102. Mounting platform; 103. Level body; 200. Fixed end; 201. Movable end; 202. Adjusting bolt; 203. Support leg; 204. Connecting rod; 205. Telescopic leg; 206. Fixing port; 207. Threaded pipe; 208. Positioning bolt; 300. Connecting cavity; 301. Connecting bolt; 302. Ball head; 303. Annular groove; 304. Adjusting tube; 305. Push rod; 306. Lead screw; 307. First motor; 400, First gear; 401, Second motor; 402, Second gear; 403, Holding rod; 404, First spring; 405, Push rod; 406, Second spring; 407, Push plate; 408, Push bar; 409, Cylinder. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] refer to Figures 1-7 This embodiment provides a combined level for measurement, including a tripod 100, a support 101 on top of the tripod 100, a mounting platform 102 on top of the support 101, a level body 103 on top of the mounting platform 102, and an adjustment component on the support 101. The tripod 100 supports the entire device on the ground. The support 101 is located on top of the tripod 100 and serves as the supporting base for the upper measuring structure. The mounting platform 102 is located on top of the support 101 and supports the level body 103. The adjustment component corrects the posture of the mounting platform 102 relative to the support 101 to maintain the level of the level body 103 as required.

[0022] The mounting platform 102 is mounted on top of the support 101 via a detachable connection structure. This detachable connection structure ensures that the mounting platform 102 can be assembled and disassembled while simultaneously providing a limiting connection between the mounting platform 102 and the support 101. After the mounting platform 102 is assembled on top of the support 101, it can swing at a small angle relative to the support 101 around its central pivot point, thus providing a basis for attitude adjustment for subsequent horizontal correction.

[0023] The adjustment components include adjustment mechanisms and tilt sensors. The tilt sensor is mounted on the level body 103 and is used to detect the tilt angle of the mounting platform 102. Since the level body 103 is fixedly mounted on the top of the mounting platform 102, when the mounting platform 102 tilts, the tilt sensor can simultaneously detect the tilt direction and amount of the mounting platform 102 relative to the horizontal reference. Three adjustment mechanisms are provided, distributed circumferentially along the support 101 and located in the outer region of the central pivot point. One end of each adjustment mechanism is connected to the support 101, and the other end is connected to or abuts against the mounting platform 102, used to change the support height at the corresponding circumferential position of the mounting platform 102.

[0024] During installation, first unfold the tripod 100 and stably support it on the ground. Then, fix the support platform 101 to the top of the tripod 100. Next, assemble the mounting platform 102 onto the top of the support platform 101 via a detachable connection structure, forming a central pivot point. Finally, install the level body 103 onto the top of the mounting platform 102. After the above assembly is completed, the mounting platform 102 and the support platform 101 form a support relationship with a central pivot point and multiple circumferential adjustment mechanisms. The central pivot point is responsible for the center positioning and pivot support of the mounting platform 102, while the circumferentially distributed adjustment mechanisms are responsible for the height correction of the mounting platform 102.

[0025] In use, the entire machine is first initially supported and positioned using the tripod 100. When there are slight differences in ground elevation, or subtle variations in the support state of the extended legs of the tripod 100, the mounting platform 102 may be non-level relative to the support 101. In this case, the tilt sensor on the level body 103 detects the tilt of the mounting platform 102. The operator adjusts the corresponding adjustment mechanism based on the tilt direction indicated by the tilt sensor. If the mounting platform 102 tilts downwards in a certain circumferential direction, the adjustment mechanism corresponding to that circumferential position is raised, or the adjustment mechanism on the opposite side is lowered, causing the mounting platform 102 to swing in the opposite direction around the central pivot point to reduce the tilt. After one adjustment mechanism is activated, the tilt sensor continues to detect the tilt of the mounting platform 102, and the operator then adjusts the remaining adjustment mechanisms until the mounting platform 102 reaches the target level. After the mounting platform 102 is leveled, the level body 103 maintains a stable horizontal posture with the mounting platform 102, thus meeting the measurement requirements.

[0026] During measurement, when one leg of the tripod 100 experiences a slight displacement due to soft ground, changes in force, or minor impact, the posture of the support 101 will change accordingly, and the mounting platform 102 will also exhibit a new tilting tendency. Since a central pivot point is provided between the mounting platform 102 and the support 101, and at least three circumferentially spaced adjustment mechanisms are provided around the support 101, the corresponding adjustment mechanisms can be corrected again based on the tilt angle detected by the tilt sensor. This readjusts the support point height of the mounting platform 102 relative to the support 101, thereby restoring the mounting platform 102 to a horizontal state. In this way, the horizontal correction of the mounting platform 102 no longer relies entirely on repeated adjustments of the tripod 100 itself, but can be achieved through more targeted posture correction between the support 101 and the mounting platform 102.

[0027] In this embodiment, the triangular support 100 includes a fixed end 200 and a movable end 201. The fixed end 200 is connected to the support platform 101, and the movable end 201 is located below the fixed end 200. An adjusting bolt 202 is threaded onto the movable end 201. Multiple support legs 203 are distributed circumferentially around the movable end 201 and are rotatably connected to the outer wall of the movable end 201. A connecting rod 204 corresponding to each support leg 203 is rotatably connected to the fixed end 200. The end of each connecting rod 204 away from the fixed end 200 is rotatably connected to the corresponding support leg 203.

[0028] In use, by rotating the adjusting bolt 202, the movable end 201 moves vertically relative to the fixed end 200. During the movement of the movable end 201, the upper rotation points of each support leg 203 move synchronously. Simultaneously, under the linkage of the connecting rod 204, each support leg 203 swings outward or retracts inward relative to the movable end 201. When the movable end 201 moves downward, each support leg 203 gradually expands outward with the assistance of the connecting rod 204 to increase the support range of the tripod 100; when the movable end 201 moves upward, each support leg 203 gradually retracts inward with the assistance of the connecting rod 204 to reduce the overall space occupied by the tripod 100. Thus, by adjusting the coordination between the bolt 202, the movable end 201, the connecting rod 204, and the support legs 203, the tripod 100 can be synchronously expanded and retracted, providing good support stability when erected and facilitating storage and transportation when not in use.

[0029] In this embodiment, a telescopic leg 205 is slidably connected to the support leg 203. The telescopic leg 205 can slide relative to the support leg 203 along its length direction to adjust the length of the corresponding support leg of the triangular bracket 100. Multiple fixing holes 206 are provided on the telescopic leg 205, spaced apart along its length direction to correspond to different extension positions of the telescopic leg 205. A threaded tube 207 is connected to the support leg 203, and a positioning bolt 208 is threaded onto the threaded tube 207. The inner end of the positioning bolt 208 can be inserted into one of the fixing holes 206 to position the telescopic leg 205 relative to the support leg 203.

[0030] During adjustment, first rotate the positioning bolt 208 to disengage its inner end from the fixing port 206, releasing the positioning restriction on the telescopic leg 205. Then, pull or push the telescopic leg 205 along the length of the support leg 203, allowing it to slide relative to the support leg 203 to the target position. Once the target fixing port 206 has moved to the position corresponding to the positioning bolt 208, rotate the positioning bolt 208 again, inserting its inner end into the corresponding fixing port 206, thus positioning the telescopic leg 205 in the appropriate position. This structure allows for adjustment of the effective length of each support leg 203 according to ground elevation differences or support height requirements, maintaining a stable relative position between the telescopic leg 205 and the support leg 203 after adjustment.

[0031] In this embodiment, the bottom of the mounting platform 102 has a connecting cavity 300, and the top of the support 101 is threadedly connected to a connecting bolt 301. A ball head 302, which mates with the connecting cavity 300, is fixed to the top of the connecting bolt 301. After the mounting platform 102 is assembled onto the top of the support 101, the ball head 302 extends into the connecting cavity 300 and mates with the inner wall of the connecting cavity 300, thereby forming a central pivot point located in the middle between the mounting platform 102 and the support 101. Because the connecting bolt 301 and the support 101 are threadedly connected, the connecting bolt 301 can be stably installed on the top of the support 101, keeping the ball head 302 in an upward supporting state. Because the ball head 302 mates with the connecting cavity 300, when the mounting platform 102 is subjected to the action of the adjustment mechanism, it can swing at a small angle relative to the support 101 with the ball head 302 as the center, thus providing a pivot basis for correcting the horizontal state of the mounting platform 102.

[0032] In practical use, when the adjustment mechanism adjusts the support height at different circumferential positions of the mounting platform 102, the connecting cavity 300 at the bottom of the mounting platform 102, which mates with the ball head 302, will change its posture relative to the ball head 302. This causes the mounting platform 102 to swing relative to the support 101 around the central pivot point, thereby adjusting the tilt state of the mounting platform 102. By setting the central pivot point as the mating structure between the ball head 302 at the top of the connecting bolt 301 and the connecting cavity 300 at the bottom of the mounting platform 102, the swing center between the mounting platform 102 and the support 101 can be limited to the central region, preventing significant lateral movement of the mounting platform 102 during leveling. Furthermore, it facilitates stable support and small-angle swing engagement of the mounting platform 102 at the top of the support 101, thus improving the stability and correction accuracy of the mounting platform 102 during leveling.

[0033] In this embodiment, the adjustment mechanism includes an annular groove 303 formed on the top of the support 101. The annular groove 303 is arranged around the central pivot point and has multiple adjustment tubes 304 spaced circumferentially. Each adjustment tube 304 is fixedly disposed within the annular groove 303, and a top rod 305 is slidably connected within each adjustment tube 304. The upper end of the top rod 305 is used to connect to or abut against the bottom of the mounting platform 102 to provide support for the corresponding circumferential position of the mounting platform 102. Each adjustment tube 304 is also provided with a lead screw 306, which is threadedly engaged with the top rod 305. Through the threaded transmission relationship between the lead screw 306 and the top rod 305, the top rod 305 can move up and down along the axial direction of the adjustment tube 304.

[0034] In use, when it is necessary to correct the horizontal state of the mounting platform 102, the adjustment mechanism at the corresponding position can be adjusted according to the tilt direction of the mounting platform 102. Specifically, by driving the lead screw 306 in the corresponding adjustment tube 304 to rotate, the push rod 305 threaded with the lead screw 306 moves upward or downward along the axial direction of the adjustment tube 304, thereby changing the support height of the push rod 305 on the mounting platform 102 at that position. Since multiple adjustment tubes 304 are distributed circumferentially along the support 101, and a central pivot point is provided between the mounting platform 102 and the support 101, when the support height of one or more push rods 305 changes, the mounting platform 102 can swing at a small angle relative to the support 101 around the central pivot point to correct the tilt state of the mounting platform 102 until the mounting platform 102 returns to a horizontal state.

[0035] In this embodiment, a first motor 307 is provided inside the adjusting tube 304. The first motor 307 is fixedly installed inside the adjusting tube 304, and the output shaft of the first motor 307 is connected to the lead screw 306 for driving the lead screw 306 to rotate. Since the lead screw 306 is threadedly engaged with the push rod 305, when the first motor 307 is working, the first motor 307 drives the lead screw 306 to rotate through the output shaft, thereby causing the push rod 305, which is threadedly engaged with the lead screw 306, to move upward or downward along the axial direction of the adjusting tube 304, so as to change the support height at the corresponding position of the mounting platform 102.

[0036] In practical use, when the tilt sensor detects that the mounting platform 102 is not horizontal, the first motor 307 at the corresponding position can be started. The first motor 307 drives the lead screw 306 in the corresponding adjustment tube 304 to rotate, causing the top rod 305 at that position to move up and down. The first motors 307 in multiple adjustment tubes 304 drive the corresponding lead screws 306 and top rods 305 to move, thereby adjusting the support height of the mounting platform 102 at different positions around the circumference, so that the mounting platform 102 swings relative to the support 101 around the central pivot point and gradually returns to a horizontal state.

[0037] In another embodiment, a battery compartment is provided on the outer wall of the adjusting tube 304, and a battery is provided inside the battery compartment. The battery is electrically connected to the first motor 307 and is used to power the first motor 307. By placing the battery in the battery compartment on the outer wall of the adjusting tube 304, the first motor 307 in the corresponding adjusting tube 304 can obtain an independent power supply, thereby facilitating the first motor 307 to directly drive the lead screw 306 to rotate at the location of the adjusting tube 304, reducing the impact of external power supply lines on the arrangement of the adjusting mechanism. In this way, when the mounting platform 102 is leveled, the first motor 307 in each adjusting tube 304 can drive the corresponding lead screw 306 to rotate under the power supply of the corresponding battery, thereby driving the top rod 305 to rise and fall, and thus adjusting the support height at different positions around the mounting platform 102.

[0038] In this embodiment, the adjustment mechanism further includes a first gear 400 rotatably connected within the annular groove 303, an adjustment tube 304 fixed to the top of the first gear 400, a second motor 401 mounted on the support 101, and a second gear 402 meshing with the first gear 400 connected to the output shaft of the second motor 401. Since the mounting platform 102 may tilt to any circumferential position during actual use, if the adjustment tube 304 and the top rod 305 are only fixedly installed at certain positions on the support 101, their support points are relatively fixed. When the actual tilt position of the mounting platform 102 does not correspond to the fixed support position, the correction of the mounting platform 102 by the top rod 305 is poorly targeted. Based on this, the second motor 401 drives the second gear 402 to rotate, and the second gear 402 drives the first gear 400 meshing with it to move circumferentially along the annular groove 303. This causes the adjusting tube 304 fixed to the top of the first gear 400 and the push rod 305 inside the adjusting tube 304 to move synchronously along the annular groove 303, so that the working position of the adjusting mechanism can be adjusted according to the actual tilt position of the mounting platform 102. After the adjusting tube 304 moves to the target circumferential position, the height of the push rod 305 is adjusted by the threaded engagement between the lead screw 306 inside the adjusting tube 304 and the push rod 305. This allows the push rod 305 to provide support or lift to the mounting platform 102 at a position closer to its tilt position, thus facilitating more targeted correction of the horizontal state of the mounting platform 102.

[0039] In this embodiment, a plurality of retaining rods 403 are slidably connected to the connecting bolt 301. The retaining rods 403 are spaced apart circumferentially along the connecting bolt 301, and each retaining rod 403 is connected to the connecting bolt 301 by a first spring 404. A push rod 405 is slidably connected inside the connecting bolt 301, and a second spring 406 is connected between the push rod 405 and the connecting bolt 301. A push plate 407 is provided inside the connecting bolt 301, and a push bar 408 is rotatably connected to the push plate 407. The other end of the push bar 408 is rotatably connected to the push rod 405. Through this structure, the plurality of retaining rods 403 can extend and retract relative to the connecting bolt 301, and with the cooperation of the push plate 407, push bar 408, and push rod 405, the current position of the plurality of retaining rods 403 is limited and maintained.

[0040] In the initial state, each of the first springs 404 is compressed, and each retaining rod 403 extends upward under the elastic force of the first springs 404, touching the bottom of the mounting platform 102. Since the mounting platform 102 and the support 101 form a central pivot point through the ball joint 302 and the connecting cavity 300, the positional relationship between the bottom of the mounting platform 102 and each retaining rod 403 changes when the mounting platform 102 swings relative to the support 101 during leveling. For the retaining rod 403 located on the downward tilting side of the mounting platform 102, it retracts downward under the pressing action of the bottom of the mounting platform 102; for the retaining rod 403 located on the opposite side, it moves upward relative to the first springs 404 and continuously touches the bottom of the mounting platform 102. Thus, the multiple retaining rods 403 can form corresponding positional states according to the actual tilt posture of the mounting platform 102 after adjustment.

[0041] After the mounting platform 102 is adjusted to the target angle, the drive push plate 407 moves upward along the connecting bolt 301. During the upward movement of the push plate 407, the push rod 405 moves synchronously along the connecting bolt 301 via the push bar 408. After the push rod 405 moves, it forms a pressing limit on the multiple retaining rods 403, fixing the current position of the multiple retaining rods 403 relative to the connecting bolt 301, thereby maintaining the corresponding extension length of the multiple retaining rods 403 at the end of the leveling. In this way, each retaining rod 403 can provide support and retention to the bottom of the mounting platform 102 that is adapted to the leveled posture, so as to mechanically maintain the adjusted angle of the mounting platform 102.

[0042] In this embodiment, a cylinder 409 is provided inside the connecting bolt 301, and the output shaft of the cylinder 409 is connected to the push plate 407. By placing the cylinder 409 inside the connecting bolt 301 and connecting the output shaft of the cylinder 409 to the push plate 407, the cylinder 409 can drive the push plate 407 to move axially within the connecting bolt 301.

[0043] Specifically, during the leveling process of the mounting platform 102, the cylinder 409 is in its initial state, the push plate 407 is held in its initial position within the connecting bolt 301, and each retaining rod 403, under the action of the first spring 404, touches the bottom of the mounting platform 102 and undergoes corresponding extension and retraction changes as the mounting platform 102 swings relative to the support 101. When the mounting platform 102 is adjusted to the target angle, the cylinder 409 is activated, and the output shaft of the cylinder 409 pushes the push plate 407 to move along the connecting bolt 301. During the movement, the push plate 407 drives the push rod 405 to move synchronously through the push bar 408. The push rod 405 then forms a pressing limit on the multiple retaining rods 403, thereby maintaining the current position of the multiple retaining rods 403 at the end of the leveling process, so that the multiple retaining rods 403 mechanically maintain the adjusted posture of the mounting platform 102.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A combined level for measuring, characterized in that, include: Triangular bracket (100); A support (101) is provided on the top of the triangular bracket (100). A mounting platform (102) is provided on the top of the support (101), and the mounting platform (102) is provided on the top of the support (101) through a detachable connection structure; A level body (103) is located on top of the mounting platform (102). An adjustment component provided on the support (101) is used to correct the horizontal state of the mounting platform (102); The mounting platform (102) and the support platform (101) are provided with a central pivot point, and the mounting platform (102) can swing relative to the support platform (101) around the central pivot point. The adjustment component includes an adjustment mechanism and a tilt sensor. The tilt sensor is mounted on the level body (103) and is used to detect the tilt state of the mounting platform (102).

2. The combined level for measuring according to claim 1, characterized in that, The adjustment mechanism is provided in at least three parts, which are distributed at intervals along the circumference of the support (101). One end of each adjustment mechanism is connected to the support (101), and the other end is connected to or abuts against the mounting platform (102). The adjustment mechanism is used to adjust the height of the corresponding support point of the mounting platform (102) relative to the support (101) to correct the horizontal state of the mounting platform (102).

3. A combined level for measuring according to claim 1, characterized in that, The triangular bracket (100) includes a fixed end (200) and a movable end (201). An adjusting bolt (202) is threaded onto the movable end (201). Multiple legs (203) are rotatably connected to the outer wall of the movable end (201). A connecting rod (204) that is rotatably connected to the legs (203) is rotatably connected to the fixed end (200).

4. A combined level for measuring according to claim 3, characterized in that, The support leg (203) is slidably connected to a telescopic leg (205), and the telescopic leg (205) has multiple fixing ports (206). The support leg (203) is connected to a threaded tube (207), and a positioning bolt (208) is threadedly connected to the threaded tube (207). The positioning bolt (208) is inserted into one of the fixing ports (206).

5. A combined level for measuring according to claim 1, characterized in that, The bottom of the mounting platform (102) is provided with a connecting cavity (300), and the top of the support (101) is threaded with a connecting bolt (301). The top of the connecting bolt (301) is fixed with a ball head (302) that mates with the connecting cavity (300).

6. A combined level for measuring according to claim 1, characterized in that, The adjustment mechanism includes an annular groove (303) on the top of the support (101), a plurality of adjustment tubes (304) are provided in the annular groove (303), a top rod (305) is slidably connected in the adjustment tube (304), and a lead screw (306) is provided in the adjustment tube (304), and the lead screw (306) is threadedly engaged with the top rod (305).

7. A combined level for measuring according to claim 6, characterized in that, The regulating tube (304) is equipped with a first motor (307), and the output shaft of the first motor (307) is connected to the lead screw (306) for transmission.

8. A combined level for measuring according to claim 6, characterized in that, The adjustment mechanism further includes a first gear (400) rotatably connected in the annular groove (303), the adjustment tube (304) is fixed to the top of the first gear (400), and a second motor (401) is provided on the support (101). The output shaft of the second motor (401) is connected to a second gear (402) that meshes with the first gear (400).

9. A combined level for measuring according to claim 5, characterized in that, Multiple retaining rods (403) are slidably connected to the connecting bolt (301). A first spring (404) is connected between the retaining rod (403) and the connecting bolt (301). A push rod (405) is slidably connected inside the connecting bolt (301). A second spring (406) is connected between the push rod (405) and the connecting bolt (301). A push plate (407) is provided inside the connecting bolt (301). A push bar (408) is rotatably connected to the push plate (407). The other end of the push bar (408) is rotatably connected to the push rod (405).

10. A combined level for measuring according to claim 9, characterized in that, The connecting bolt (301) is equipped with a cylinder (409), and the output shaft of the cylinder (409) is connected to the push plate (407).

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