Level gauge for water conservancy project

Abstract

The water conservancy project level gauge comprises a supporting assembly, a hanging assembly and a leveling assembly, fixing columns are fixedly connected to the periphery of the bottom end of a fixing disc, an adjusting groove is formed in the center of the top end of the fixing disc, and a plurality of pitch grooves are evenly formed in the contour line of the adjusting groove in a surrounding mode; an adjusting disc is rotatably connected into the adjusting groove of the fixing disc in a limiting mode, and a plurality of pitch teeth are arranged at the positions, corresponding to the pitch grooves, of the outer contour of the adjusting disc. By arranging the supporting assembly, the supporting assembly can be adjusted to drive the leveling instrument main body to tend to a horizontal state, and the leveling instrument has a self-locking property, so that the angle of the leveling instrument does not deviate in the use process; vibration transmitted by the outside is buffered by arranging the suspension assembly, so that the use quality of the device is improved; and by arranging the leveling assembly, when the leveling instrument main body is placed on the device, leveling operation is automatically conducted on the leveling instrument.

Description

Technical Field

[0001] The invention relates to the technical field of instruments and meters, and in particular to a level for water conservancy projects. Background Art

[0002] A level is a high-precision measuring instrument used in water conservancy projects. It is mainly used to determine the height difference between ground points. It accurately determines the horizontal plane through the combination of a telescope system and a horizontal circle, thereby calculating the height difference between each measuring point.

[0003] After searching, the Chinese patent with publication number CN116066690B includes a level body arranged on a mounting chassis, a leveling mechanism is arranged on the mounting chassis, the leveling mechanism is connected to a connecting seat, a center of gravity adjustment mechanism is connected to the lower side of the connecting seat, the center of gravity adjustment mechanism is connected to a support assembly, a counterweight plate is installed on the outer ring of the support assembly, the center of gravity adjustment mechanism is connected to the counterweight plate, and a support mechanism is arranged at the bottom of the support assembly; the center of gravity adjustment mechanism includes a storage box arranged at the bottom of the connecting seat, a winding roller is arranged in the storage box, a lifting rope is wound on the winding roller, the bottom of the storage box is open, and the end of the lifting rope is connected to the counterweight plate.

[0004] In the above patent, a leveling mechanism is used to realize a quick leveling operation of the level body, and a stable support operation is realized by combining a support assembly, a support mechanism and a center of gravity adjustment mechanism; wherein the refraction of the bubble on the laser emitter is used to trigger the height adjustment assembly to stop adjusting the signal, and the first leveling plate, the second leveling plate and the first leveling seat and the second leveling seat jointly complete the automatic leveling operation of the level body.

[0005] However, the above patent fixes the level by inserting the through columns into the soil. When the ground hardness or slope is high, it is difficult for the device to achieve the expected fixing effect. At this time, the level may tip over due to interference from external factors. In addition, the above patent lacks anti-seismic function. When the level is used in an exposed environment, it is difficult for the device to maintain a high-precision working state in an unstable environment due to the influence of wind, vibration or other external interference. Summary of the invention

[0006] The purpose of the present invention is to provide a level for water conservancy projects, which has the advantages of adaptive fixation and automatic leveling, and solves the problems raised in the background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a water level for water conservancy engineering, comprising a supporting assembly arranged at the bottom of a fixed plate, a hanging assembly arranged at the top of the fixed plate, and a leveling assembly arranged on the hanging assembly, wherein the bottom of the fixed plate is fixedly connected with fixing columns on all sides, the other end of the fixing column is fixedly connected to the supporting assembly, an adjusting groove is provided at the center of the top of the fixed plate, and a plurality of pitch grooves are evenly arranged around the contour line of the adjusting groove, an adjusting plate is limitedly connected to the adjusting groove of the fixed plate for rotation, a plurality of pitch teeth are arranged at positions corresponding to the pitch grooves on the outer contour of the adjusting plate, and the opening diameter of the adjusting groove of the fixed plate is larger than the radius of the adjusting plate but smaller than the sum of the radius of the adjusting plate and the pitch teeth as a whole; The support assembly includes a driving shaft for realizing asynchronous lifting of the device, and both ends of the outer contour of the driving shaft are penetrated and sleeved with a fixing frame fixedly connected to the bottom end of the fixing column to horizontally support the fixing plate; The suspension assembly comprises a fixed cylinder for realizing buffer positioning of the device, and the axis center of the bottom end of the fixed cylinder is penetrated and slidably connected with a suspension shaft for limiting and buffering the leveling assembly; The leveling assembly comprises a balance rod for realizing misalignment balance of the device, and both ends of the balance rod are penetrated and transmission-connected with a follower for controlling the synchronous balance of the leveling assembly.

[0008] Preferably, both ends of the outer contour of the driving shaft pass through and are sleeved with a fixing frame fixedly connected to the bottom end of the fixing column, the outer contour of the driving shaft is bidirectionally fixedly connected with a key bar mirror-symmetrically along the axis of the fixing frame, and adjusting knobs are provided at both ends of the axial direction of the fixing frame, and the outer contour of the fixing frame near the middle section passes through and is transmission-connected with two bevel gears mirror-symmetrically distributed along the vertical center line of the fixing frame, and the fixing frame and the bevel gear are rotatably connected via the key bar, and the same side of the outer contours of the two bevel gears are meshed and transmission-connected with a bevel rack, and the two bevel racks are fixedly connected with a positioning column on the side away from the bevel gears, and the two positioning columns are inserted and limitedly slidably connected to the inner contour of the fixing frame on the opposite surfaces of the two bevel gears, and a connecting spring sleeved on the driving shaft and the outer contour of the key bar is fixedly connected, and the bottom ends of the two positioning columns are limitedly rotatably connected with ball joints, and the bottom ends of the two ball joints are fixedly connected with a support plate.

[0009] Preferably, the two bevel gears have the same specifications and opposite rotation directions. The rotation directions of the two bevel gears are specifically set to be spirally surrounded and point from the high point of the vertical center line of the drive shaft to the bottom of the axial ends of the drive shaft. The bottom end of the support plate is provided with an anti-slip strip made of rubber material.

[0010] Preferably, the top end of the fixed cylinder is fixedly connected to a positioning rod, both axial ends of the positioning rod are fixedly connected to telescopic columns, the bottom ends of the two telescopic columns are penetrated and slidably connected to sleeves, and the bottom ends of the two sleeves are fixedly connected to the outer contour of the top end of the adjusting disk.

[0011] Preferably, a suspension shaft is penetrated and slidably connected to the axis center of the bottom end of the fixed cylinder, a buffer spring sleeved on the outer contour of the suspension shaft is fixedly connected between the top end of the suspension shaft and the inner contour of the bottom end of the fixed cylinder, the bottom end of the suspension shaft is rotatably connected to two mirror-symmetrical connecting rods pointing to the sleeve through a pin shaft, the ends of the two connecting rods away from the suspension shaft are rotatably connected to support rods through a pin shaft, the bottom ends of the two support rods are rotatably connected to the same base plate through a pin shaft, and the same correction spring is fixedly connected to the opposite surfaces of the two support rods near the top ends.

[0012] Preferably, the rotation directions of the connecting pins between the suspension shaft and the buffer spring and the buffer spring and the connecting rod are restricted to the axial direction of the positioning rod, and the two sleeves are synchronously driven by the same external air pump.

[0013] Preferably, both ends of the balance bar are penetrated by and transmission-connected with followers, the outer contours of the two followers are penetrated by and limited slidingly connected with limit blocks, both sides of the tops of the two followers are limitedly and transmission-connected with balance columns, the four balance columns are penetrated by and slidingly connected with limit blocks at corresponding positions, the tops of the four balance columns are fixedly connected to the same balance plate, the top of the balance plate is detachably mounted with a level body and the center of gravity of the level body is located at the axis of the balance plate, the bottom ends of the two limit blocks are fixedly connected to the upper surface of the base plate and are mirror-symmetrical along the central axis of the base plate, a positioning pin is penetrated by the center of the base plate and limitedly rotatably connected, and the positioning pin is penetrated by and fixedly connected to the bottom end of the middle section of the balance bar.

[0014] Preferably, a through groove is provided on the upper surface of the base plate for the follower to be lifted and lowered, a limiting cavity is provided inside the limiting block for the follower to be deflected at a small angle, and the follower is arranged in a frustum shape, the inclined surfaces at both ends of the follower are connected to the balance column limit transmission, and the bottom end of the balance column is arranged to be an inclined surface with the same angle as that of the follower.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides a support assembly. When the level is set on a sloping ground, adjusting the support assembly can drive the level body to a horizontal state, thereby reducing the difficulty of directly adjusting the level. The self-locking property can ensure that the angle of the level does not shift during use, thereby improving the quality of use of the device.

[0016] 2. The present invention sets a suspension component. Due to the setting of the support component, the suspension component and the level body are in a nearly horizontal state. At this time, the suspension component can buffer the vibration transmitted from the outside, further reducing the vibration amplitude of the level body, thereby improving the use quality of the device.

[0017] 3. The present invention provides a leveling component, which automatically performs leveling operation on the level when the level body is placed on the device, and further absorbs and buffers external vibrations to improve its leveling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a cross-sectional view of the main structure of the present invention; Figure 3 This is a schematic diagram of the connection relationship of the support components of the present invention; Figure 4 This is an exploded schematic diagram of the support assembly structure of the present invention; Figure 5 A schematic diagram of the connection relationship of the suspension components of the present invention; Figure 6 A partial cross-sectional view of a suspension assembly of the present invention; Figure 7 This is a schematic diagram of the connection relationship of the leveling components of the present invention; Figure 8 This is an exploded schematic diagram of the leveling assembly structure of the present invention; Fig. 9 It is the overall workflow diagram of the present invention.

[0019] In the figure: 1. fixed plate; 11. pitch groove; 12. fixed column; 13. adjustment plate; 14. pitch tooth; 2. fixed frame; 21. drive shaft; 22. key bar; 23. bevel gear; 24. connecting spring; 25. bevel rack; 26. positioning column; 27. ball joint; 28. support plate; 3. sleeve; 31. telescopic column; 32. positioning rod; 33. fixed cylinder; 34. suspension shaft; 35. buffer spring; 36. connecting rod; 37. support rod; 38. bottom plate; 39. correction spring; 4. limit block; 41. follower; 42. balance column; 43. balance plate; 44. level body; 45. balance rod; 46. positioning pin. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Embodiment 1:

[0022] See also Figures 1 to 9 The present invention provides a technical solution: a water level for water conservancy engineering, comprising a supporting assembly arranged at the bottom of a fixed plate 1, a hanging assembly arranged at the top of the fixed plate 1, and a leveling assembly arranged on the hanging assembly, wherein the bottom of the fixed plate 1 is fixedly connected with a fixing column 12 on all sides, the other end of the fixing column 12 is fixedly connected to the supporting assembly, an adjusting groove is provided at the center of the top of the fixed plate 1, and a plurality of section grooves 11 are uniformly provided on the contour line of the adjusting groove, an adjusting plate 13 is connected in a limited rotation in the adjusting groove of the fixed plate 1, a plurality of section teeth 14 are provided on the outer contour of the adjusting plate 13 at positions corresponding to the section grooves 11, and the opening diameter of the adjusting groove of the fixed plate 1 is larger than the radius of the adjusting plate 13 but smaller than the sum of the radius of the adjusting plate 13 and the section teeth 14 as a whole; An asynchronously lifting drive shaft 21, both ends of the outer contour of the drive shaft 21 penetrate and are sleeved with a fixed frame 2 fixedly connected to the bottom end of the fixed column 12 to horizontally support the fixed plate 1; The suspension assembly includes a fixed cylinder 33 for realizing buffer positioning of the device, and the axis center of the bottom end of the fixed cylinder 33 is penetrated and slidably connected with a suspension shaft 34 for limiting and buffering the leveling assembly; The leveling assembly includes a balance rod 45 for achieving misalignment balance of the device, and both ends of the balance rod 45 are penetrated and transmission-connected with a follower 41 for controlling the synchronous balance of the leveling assembly.

[0023] In the present invention, the basic measurement work of the device is completed by the level main body 44, and its working process and principle belong to the existing technology, so no further details are given here; further, the fixed plate 1 is used as the main structure of the device to realize the structural connection and transmission function between the support component, the suspension component and the leveling component, and the structural coordination of the support component realizes that when the device is set on a sloped ground, its asynchronous lifting function can ensure the nearly horizontal state of the fixed plate 1, the suspension component and the leveling component, thereby effectively reducing the difficulty of operation when the level main body 44 is leveled to a large extent; the setting of the suspension component realizes the adjustment of the lifting height of the level main body 44, while effectively absorbing the kinetic energy transmitted through the support component when the ground vibrates, further reducing the amplitude of the vibration of the level main body 44 with the device, thereby effectively improving the measurement quality and use effect of the level main body 44; and the setting of the leveling component enables the level main body 44 to continue to maintain a horizontal state when the device is disturbed by external factors such as wind and causes it to tilt at a small angle, further improving the measurement quality of the level main body 44 and eliminating the operator's repeated leveling operation steps.

[0024] Among them, the fixed disk 1 and the fixed column 12 are used to connect the support component, the adjusting disk 13 is used to connect the suspension component, and the fixed disk 1 and the adjusting disk 13 realize damping rotation through the pitch groove 11 and the pitch teeth 14. Since the fixed disk 1 and the adjusting disk 13 rotate coaxially, and the opening radius of the adjusting groove of the fixed disk 1 is larger than the radius of the adjusting disk 13, that is, when the person rotates the adjusting disk 13, there is no contact between its edge and the fixed disk 1. At this time, the pitch teeth 14 arranged around the outside of the adjusting disk 13 rotate synchronously with the adjusting disk 13, and the opening radius of the adjusting groove of the fixed disk 1 is smaller than the radius of the adjusting disk 13 and the pitch teeth 14. The sum of the overall radius, and a pitch groove 11 adapted to the pitch tooth 14 is also opened on the contour line of the adjusting groove of the fixed disk 1, that is, as the personnel rotate the adjusting disk 13, the pitch teeth 14 and the pitch groove 11 are repeatedly and intermittently meshed, and the pitch teeth 14 and the adjusting groove of the fixed disk 1 are interference fit, so that the rotation of the adjusting disk 13 is intermittent so that the operator can accurately adjust the rotation angle of the adjusting disk 13, and this damping cooperation can ensure that under the interference of external wind factors, the adjusting disk 13 can remain in a fixed state under the pitch teeth 14 and the pitch groove 11 to improve the overall stability of the device.

[0025] Embodiment 2:

[0026] See also Figure 3-Figure 4 This embodiment further illustrates the following on the basis of the first embodiment: A key bar 22 is bidirectionally fixedly connected to the outer contour of the driving shaft 21, which is mirror-symmetrical along the axis of the fixed frame 2. Adjustment knobs are provided at both ends of the axial direction of the fixed frame 2. Two bevel gears 23 distributed mirror-symmetrically along the vertical center line of the fixed frame 2 are penetrated and transmission-connected on the outer contour of the fixed frame 2 near the middle section. The fixed frame 2 and the bevel gear 23 are rotationally connected via the key bar 22. The same side of the outer contours of the two bevel gears 23 are meshed and transmission-connected with a bevel rack 25. The two bevel racks 25 are fixedly connected to the sides away from the bevel gears 23 with positioning columns 26. The two positioning columns 26 are penetrated and limitedly slidably connected to the inner contour of the fixed frame 2 on the sides away from the bevel racks 25. The opposite surfaces of the two bevel gears 23 are fixedly connected with a connecting spring 24 sleeved on the outer contours of the driving shaft 21 and the key bar 22. The bottom ends of the two positioning columns 26 are rotationally limitedly connected with a ball joint 27, and the bottom ends of the two ball joints 27 are fixedly connected with a support plate 28.

[0027] The two bevel gears 23 have the same specifications and opposite rotation directions. The rotation directions of the two bevel gears 23 are specifically set to be spirally surrounded and point from the high point of the vertical center line of the drive shaft 21 to the bottom of the axial ends of the drive shaft 21. The bottom end of the support plate 28 is provided with an anti-slip strip made of rubber material.

[0028] It can be seen from the first embodiment that when the device is set on a sloped ground, the support assembly realizes an asynchronous lifting function to ensure that the fixed plate 1, the suspension assembly and the leveling assembly are in a nearly horizontal state. The specific working process is as follows: First, ensure that the setting direction of the device is in the same direction as the ground slope, that is, the two support plates 28 are arranged along the slope direction rather than perpendicular to the slope direction. At this time, the operator turns the adjustment knobs at both ends of the drive shaft 21, and the drive shaft 21 drives the key bar 22 to rotate synchronously, and the key bar 22 further drives the bevel gear 23 to rotate. The bevel gear 23 causes the two bevel racks 25 to rise and fall synchronously, and the rise and fall of the bevel rack 25 further drives the ball joint 27 and the support plate 28 to rise and fall synchronously. When the support plate 28 contacts the ground, due to the slope of the ground, there is an angle between the support force of the ground on the support plate 28 and the vertical downward pressure of the support plate 28. According to the force analysis, at this time, in order to tend to force balance, the ball joint 27 will drive the support plate 28 to rotate under the pressure of the ground and make the support plate 28 fit on the slope surface, thereby completing the support and fixation of the device. Moreover, since a plurality of anti-slip strips are provided at the bottom end of the support plate 28, the anti-slip strips further increase the contact area between the support plate 28 and the ground, thereby increasing the static friction between the ground and the support assembly to further improve the support and fixation effect of the device.

[0029] It should be noted that, as mentioned above, the two support plates 28 are arranged in the direction of the slope, that is, during the synchronous lifting of the two support plates 28, the support plate 28 close to the top of the slope always contacts the ground before the other support plate 28. At this time, the ground supports the support plate 28 that contacts first, causing its corresponding bevel rack 25 to be unable to continue to descend. Furthermore, the corresponding bevel gear 23 is also unable to rotate. At this time, the other support plate 28 has not yet contacted the ground. As the personnel continue to rotate the drive shaft 21, the bevel gear 23 that is restricted from rotation begins to squeeze the corresponding bevel rack 25 under the transmission action of the drive shaft 21, and the pressure direction is in the same direction as the helix angle of the bevel gear 23. At this time, the bevel gear 23 that is restricted from rotation begins to slide a short distance outward along the axial direction of the drive shaft 21 and the key bar 22, while the bevel gear 23 that is not restricted from rotation continues to rotate and drives the corresponding bevel rack 25 to descend until the corresponding support plate 28 contacts the ground and completes the supporting operation.

[0030] During this process, a height difference occurs in the descending process of the two support plates 28, thereby realizing the asynchronous lifting function of the support assembly to adapt to the ground slope, that is, the descending process of the two support plates 28 is first synchronous and then asynchronous, and the rising process is also first synchronous and starts asynchronously after one of the positioning columns 26 first abuts against the bottom end of the fixed plate 1; in addition, in the process of the two support plates 28 starting to asynchronously descend, the bevel gear 23 close to the side of the slope top is first restricted from rotating and slides horizontally toward the slope top for a short distance. At this time, the connecting spring 24 between the two bevel gears 23 is synchronously stretched, and with the gradual increase in the degree of stretching of the connecting spring 24, the pulling force of the connecting spring 24 on the two bevel gears 23 is synchronously increased. At this time, the friction between the bevel gear 23 and the bevel rack 25 is synchronously increased, which further causes the transmission resistance between the bevel gear 23 and the bevel rack 25 to increase, so that after the operator stops rotating the drive shaft 21, the two bevel gears 23 and the bevel rack 25 are self-locking to complete the fixation of the support assembly.

[0031] It should be noted that a transparent groove is provided on the surface of the fixed frame 2 and an oily liquid and a small bubble are injected into the groove. When the operator turns the adjustment knob of the drive shaft 21, he can determine the horizontal state of the fixed frame 2 by observing the position of the bubble. This process belongs to the prior art and will not be elaborated on here. When the support assembly completes the asynchronous lifting support of the device and the fixed frame 2 is in a nearly horizontal state, due to the fixed connection of the fixed column 12, the fixed plate 1, the suspension assembly and the leveling assembly are all in a nearly horizontal state, thereby reducing the difficulty of operation when making large adjustments to the level meter body 44.

[0032] Embodiment three:

[0033] See also Figure 5-Figure 6 This embodiment further illustrates the following on the basis of the second embodiment: The top of the fixed cylinder 33 is fixedly connected to a positioning rod 32, and both axial ends of the positioning rod 32 are fixedly connected to telescopic columns 31. The bottom ends of the two telescopic columns 31 are penetrated and slidably connected to the sleeve 3, and the bottom ends of the two sleeves 3 are fixedly connected to the outer contour of the top of the adjusting disk 13.

[0034] A buffer spring 35 sleeved on the outer contour of the suspension shaft 34 is fixedly connected between the top of the suspension shaft 34 and the inner contour of the bottom end of the fixed cylinder 33. The bottom end of the suspension shaft 34 is rotatably connected to two connecting rods 36 that are mirror-symmetrical and point to the sleeve 3 through a pin. The ends of the two connecting rods 36 away from the suspension shaft 34 are rotatably connected to support rods 37 through a pin. The bottom ends of the two support rods 37 are rotatably connected to the same bottom plate 38 through a pin. The same correction spring 39 is fixedly connected to the opposite surfaces of the two support rods 37 near the top.

[0035] The rotation directions of the connecting pins between the suspension shaft 34 and the buffer spring 35 and between the buffer spring 35 and the connecting rod 36 are restricted to be along the axis direction of the positioning rod 32, and the two sleeves 3 are synchronously driven by the same external air pump.

[0036] It can be seen from the second embodiment that the fixed plate 1 and the suspension assembly are both in a nearly horizontal state. At this time, when it is necessary to adjust the height of the level main body 44, the two sleeves 3 are synchronously pumped with air through an external air pump. The sleeves 3 and the telescopic column 31 together form a pneumatic rod structure. At this time, the two telescopic columns 31 are synchronously raised and lowered to achieve the height adjustment operation of the leveling assembly and the level main body 44, and the influence on the nearly horizontal state of the level main body 44 is effectively reduced during the adjustment process. On the other hand, the pneumatic rod structure of the sleeve 3 and the telescopic column 31 can effectively absorb a part of The ground vibration is transmitted through the support assembly and the fixed column 12. When the device is set at a construction site or there is strong interference from the outside, the ground may vibrate. At this time, due to the rigid structural connection between the support plate 28, the fixed column 12 and the sleeve 3, most of the vibration kinetic energy will be transmitted to the sleeve 3. Since the gas is highly compressible, the impact force applied at the peak of the vibration of the sleeve 3 is absorbed by gas compression, and the gas naturally expands at the trough of the vibration of the sleeve 3 to gradually release the stored energy, thereby absorbing and buffering most of the vibration kinetic energy of the sleeve 3.

[0037] It should be noted that a small amount of kinetic energy continues to be transmitted to the fixed cylinder 33 along the telescopic column 31 and the positioning rod 32. At this time, the non-contact transmission connection between the fixed cylinder 33 and the suspension shaft 34 allows this part of the kinetic energy to be further absorbed, and the vibration of the fixed cylinder 33 is converted into the elastic potential energy of the buffer spring 35 and slowly released, thereby further improving the vibration buffering function of the suspension assembly.

[0038] On the other hand, it can be seen from Example 1 that the rotation of the adjustment disk 13 realizes the adjustment of the orientation of the suspension assembly and the level body 44. At this time, due to the limitation of the rotation direction of the connecting pin between the suspension shaft 34 and the buffer spring 35 and the buffer spring 35 and the connecting rod 36, when the base plate 38 is disturbed by the radial wind force along the positioning rod 32, the pin cannot rotate, thereby improving the anti-interference ability of the suspension assembly. When the base plate 38 is disturbed by the axial wind force along the positioning rod 32, although the pin can rotate to cause a small angle deflection of the base plate 38, the correction spring 39 is synchronously compressed at this time, that is, when the interference intensity of the wind force is less than the deformation coefficient of the correction spring 39, the suspension assembly is still in a stable state. Even if the interference intensity of the wind force is higher than the deformation coefficient of the correction spring 39, the deflection angle of the suspension assembly can be effectively limited to a very small range under the action of the correction spring 39 tending to reset.

[0039] Embodiment 4:

[0040] See also Figure 7-Figure 8 This embodiment further illustrates the following on the basis of the third embodiment: The outer contours of the two followers 41 are penetrated by and limitedly slidably connected to the limiting blocks 4, both sides of the tops of the two followers 41 are limitedly transmitted and connected with balance columns 42, the four balance columns 42 are penetrated by and slidably connected to the limiting blocks 4 at corresponding positions, the tops of the four balance columns 42 are fixedly connected to the same balance plate 43, the top of the balance plate 43 is detachably mounted with a level body 44 and the center of gravity of the level body 44 is located at the axis of the balance plate 43, the bottom ends of the two limit blocks 4 are fixedly connected to the upper surface of the base plate 38 and are mirror-symmetrical along the central axis of the base plate 38, a positioning pin 46 is penetrated by and limitedly rotatably connected to the center of the base plate 38, and the positioning pin 46 is penetrated by and fixedly connected to the bottom end of the middle section of the balance rod 45.

[0041] A through groove is provided on the upper surface of the bottom plate 38 for the follower 41 to be lifted and lowered, a limiting cavity is provided inside the limiting block 4 for the follower 41 to be deflected at a small angle, and the follower 41 is configured to be in a frustum shape, the inclined surfaces at both ends of the follower 41 are connected to the balancing column 42 in a limiting transmission manner, and the bottom end of the balancing column 42 is configured to be an inclined surface of the same angle as that of the follower 41.

[0042] It can be seen from the third embodiment that when the bottom plate 38 is disturbed by the wind force along the axial direction of the positioning rod 32 and the strength is relatively large, the bottom plate 38 will deflect at a small angle. Since the leveling assembly is fixed on the bottom plate 38 as a whole, the leveling assembly will deflect accordingly at this time. At the same time, the structure of the adjustment assembly automatically works to continue to maintain the balance state of the level instrument body 44. The specific working process is as follows: Since the level body 44 can be detachably installed on the top of the balance plate 43 and the center of gravity of the level body 44 corresponds to the axis of the level body 44, that is, the pressure of the level body 44 on the balance plate 43 is at the center, and the balance plate 43 is evenly stressed as a whole. Considering that the mass distribution of level bodies 44 of different specifications may be uneven, the center of gravity of the level body 44 is limited to the axis of the balance plate 43 to meet the scene requirements of the device adapting to level bodies 44 of different specifications. If there is an offset between the center of gravity of the level body 44 and its geometric center in actual situations, the position of the level body 44 is adjusted accordingly so that its center of gravity coincides with the axis of the balance plate 43; further, the balance plate 43 applies uniform pressure to the four balance columns 42 at its bottom so that the four balance columns 42 are all in a nearly horizontal balance state, and the balance column 42 further applies pressure to the follower 41 so that the follower 41 is also in a balanced state.

[0043] When the base plate 38 deflects at a small angle, the two limit blocks 4 deflect synchronously with the base plate 38 to produce a height difference. At this time, the locating pin 46 remains stationary under the pressure of the follower 41, that is, there is a relative rotation between the locating pin 46 and the base plate 38. The deflection of the base plate 38 is unlikely to interfere with the equilibrium state of the locating pin 46 and the follower 41, thereby further reducing the interference effect of the deflection of the base plate 38 on the nearly horizontal equilibrium state of the balance plate 43 and the level body 44.

[0044] It should be noted that due to the limited sliding between the balance column 42 and the limit block 4, and the supporting and lifting effect of the follower 41 on the balance column 42, it is difficult for the balance plate 43 and the level body 44 to deviate in the horizontal direction, thereby further improving the balancing and fixing effect of the leveling assembly on the level body 44, and the four followers 41 evenly disperse the gravity of the balance plate 43 and the level body 44, further improving the anti-interference strength of the leveling assembly when the external wind directly affects the level body 44.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water level for hydraulic engineering, comprising a support assembly arranged at the bottom end of a fixed plate (1), a suspension assembly arranged at the top end of the fixed plate (1), and a leveling assembly arranged on the suspension assembly, characterized in that: The bottom of the fixed disk (1) is fixedly connected to fixed columns (12) on all sides, and the other end of the fixed column (12) is fixedly connected to the support assembly. An adjustment groove is provided at the center of the top of the fixed disk (1), and a plurality of pitch grooves (11) are evenly arranged around the contour line of the adjustment groove. An adjustment disk (13) is connected to the adjustment groove of the fixed disk (1) for limited rotation. A plurality of pitch teeth (14) are arranged at positions corresponding to the pitch grooves (11) on the outer contour of the adjustment disk (13). The opening diameter of the adjustment groove of the fixed disk (1) is larger than the radius of the adjustment disk (13) but smaller than the sum of the radii of the adjustment disk (13) and the pitch teeth (14) as a whole. The support assembly comprises a drive shaft (21) for realizing asynchronous lifting of the device, and both ends of the outer contour of the drive shaft (21) penetrate and are sleeved with a fixed frame (2) fixedly connected to the bottom end of the fixed column (12) to horizontally support the fixed plate (1); The suspension assembly comprises a fixed cylinder (33) for realizing buffer positioning of the device, and a suspension shaft (34) for limiting and buffering the leveling assembly is penetrated and slidably connected to the axis center of the bottom end of the fixed cylinder (33); The leveling assembly comprises a balance rod (45) for achieving misalignment balance of the device, and both ends of the balance rod (45) are penetrated and transmission-connected with a follower (41) for controlling the synchronous balance of the leveling assembly.

2. A water conservancy engineering level according to claim 1, characterized in that: A key bar (22) is bidirectionally fixedly connected to the outer contour of the drive shaft (21) and is mirror-symmetrical along the axis of the fixed frame (2). Adjustment knobs are provided at both ends of the axial direction of the fixed frame (2). Two bevel gears (23) distributed mirror-symmetrically along the vertical center line of the fixed frame (2) are penetrated and transmission-connected on the outer contour of the fixed frame (2) near the middle section. The fixed frame (2) and the bevel gears (23) are rotationally connected via the key bar (22). The same side of the outer contour of the two bevel gears (23) are meshed and transmission-connected with a bevel rack (25). The side of the bevel rack (25) away from the bevel gear (23) is fixedly connected to a positioning column (26); the side of the two positioning columns (26) away from the bevel rack (25) penetrates and is limitedly slidably connected to the inner contour of the fixed frame (2); the opposite surfaces of the two bevel gears (23) are fixedly connected to a connecting spring (24) sleeved on the outer contour of the drive shaft (21) and the key bar (22); the bottom ends of the two positioning columns (26) are limitedly rotatably connected to a ball joint (27); the bottom ends of the two ball joints (27) are fixedly connected to a support plate (28).

3. A water conservancy engineering level according to claim 2, characterized in that: The two bevel gears (23) have the same specifications and opposite rotation directions. The rotation directions of the two bevel gears (23) are specifically arranged to be spirally wound and point from the high point of the vertical center line of the drive shaft (21) to the bottom of the axial ends of the drive shaft (21). The bottom end of the support plate (28) is provided with an anti-slip strip made of rubber material.

4. A water conservancy engineering level according to claim 1, characterized in that: The top end of the fixed cylinder (33) is fixedly connected to a positioning rod (32), and both axial ends of the positioning rod (32) are fixedly connected to telescopic columns (31). The bottom ends of the two telescopic columns (31) are penetrated by and slidably connected to sleeves (3), and the bottom ends of the two sleeves (3) are fixedly connected to the outer contour of the top end of the adjustment disk (13).

5. A water conservancy engineering level according to claim 1, characterized in that: A buffer spring (35) sleeved on the outer contour of the suspension shaft (34) is fixedly connected between the top end of the suspension shaft (34) and the inner contour of the bottom end of the fixed cylinder (33); the bottom end of the suspension shaft (34) is rotatably connected to two mirror-symmetrical connecting rods (36) pointing to the sleeve (3) via a pin; the ends of the two connecting rods (36) away from the suspension shaft (34) are rotatably connected to support rods (37) via a pin; the bottom ends of the two support rods (37) are rotatably connected to the same bottom plate (38) via a pin; and the same deviation-correcting spring (39) is fixedly connected to the opposite surfaces of the two support rods (37) at positions close to the top ends.

6. A water conservancy engineering level according to claim 5, characterized in that: The rotation directions of the connecting pins between the suspension shaft (34) and the buffer spring (35) and between the buffer spring (35) and the connecting rod (36) are restricted to be along the axis direction of the positioning rod (32), and the two sleeves (3) are synchronously driven by the same external air pump.

7. A water conservancy engineering level according to claim 1, characterized in that: The outer contours of the two followers (41) are penetrated and limitedly slidably connected to the limit blocks (4), both sides of the top ends of the two followers (41) are limitedly connected to the balance columns (42), the four balance columns (42) are penetrated and slidably connected to the limit blocks (4) at corresponding positions, the top ends of the four balance columns (42) are fixedly connected to the same balance plate (43), the top end of the balance plate (43) is detachably mounted with a level body (44), and the center of gravity of the level body (44) is located at the axis of the balance plate (43), the bottom ends of the two limit blocks (4) are fixedly connected to the upper surface of the bottom plate (38) and are mirror-symmetrical along the central axis of the bottom plate (38), a positioning pin (46) is penetrated and limitedly rotatably connected at the center of the bottom plate (38), and the positioning pin (46) is penetrated and fixedly connected to the bottom end of the middle section of the balance rod (45).

8. A water conservancy engineering level according to claim 7, characterized in that: The upper surface of the bottom plate (38) is provided with a through groove for the follower (41) to be lifted and lowered, the interior of the limit block (4) is provided with a limit cavity for the follower (41) to be deflected at a small angle, and the follower (41) is arranged in a frustum shape, the inclined surfaces at both ends of the follower (41) are connected to the balance column (42) in a limit transmission manner, and the bottom end of the balance column (42) is arranged as an inclined surface with the same angle as that of the follower (41).

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