A movable water level measuring device
By designing a mobile water level measuring device, which automatically measures water level using a rack and pinion structure, the high cost and safety risks associated with manual real-time monitoring are solved, and high-precision water level measurement without human intervention is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA STATE CONSTR PORT ENG GRP
- Filing Date
- 2025-07-02
- Publication Date
- 2026-06-09
AI Technical Summary
Current water level measurement technology requires real-time manual monitoring, which results in high labor costs, harsh working conditions, and safety risks.
Design a mobile water level measuring device that uses a ratchet and pawl structure to automatically measure the highest and lowest water levels. Through the cooperation of a float and a positioning rod, it can achieve unattended water level measurement.
It enables automatic measurement of the highest and lowest water levels, saving labor costs and improving measurement accuracy and safety.
Smart Images
Figure CN224341016U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of water level measurement equipment, specifically a portable water level measurement device. Background Technology
[0002] In waterway engineering, high-pile wharves, and port operations, accurate measurement of water levels and tides is crucial for construction and production. Water levels fluctuate with the tides, requiring workers to accurately measure the highest and lowest points. Currently, most wharf projects rely on manual measurement of water levels. This manual measurement requires personnel to operate on-site at the wharf's steel platform, a process that is not only tedious and inaccurate but also presents numerous challenges. Firstly, surveyors must remain on-site continuously, consuming significant manpower and time. Secondly, the working environment is extremely harsh in severe weather conditions such as torrential rain, strong winds, and extreme heat or cold, posing a risk to the personal safety of the surveyors. Utility Model Content
[0003] To address the problems of the prior art, this invention provides a portable water level measuring device that can measure the water level at the highest and lowest tides, eliminating the need for staff to monitor the water level in real time and greatly saving labor costs.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a movable water level measuring device, comprising a main longitudinal rod, the upper end of which is fixedly connected to a clamping assembly for connecting a steel platform, the lower end of which is fixedly connected to a support frame, a measuring ruler fixedly connected to the support frame, and upper and lower measuring assemblies with identical structures arranged symmetrically along the central plane on the support frame, the upper measuring assembly being used to measure the highest water level, and the lower measuring assembly being used to measure the lowest water level.
[0005] The above structural design enables the measurement of water levels at the highest and lowest tides, eliminating the need for staff to monitor water levels in real time and greatly saving labor costs.
[0006] Preferably, the lower measuring component includes a ratchet rack fixedly connected to the support frame, a pawl engaging with the ratchet rack, a positioning rod sleeved on the ratchet rack, and a float fixedly connected to the positioning rod. The pawl is rotatably connected to the positioning rod, and the pawl is fixedly connected to the upper end of a tension spring, while the lower end of the tension spring is fixedly connected to the positioning rod.
[0007] With the above structural design, the lower measuring component can only move downwards. When the float is on the water surface, the buoyancy force on the float is greater than the weight of the float and the positioning rod, preventing the positioning rod from moving downwards. When the water level drops, under the weight of the float and the positioning rod, the pawl slides along the ratchet rack until the water level reaches its lowest point. When the water level begins to rise, the pawl engages in the grooves of the ratchet rack, preventing it from rotating. The float, however, will not move upwards with the water level, and the positioning rod will remain stationary until the water level reaches its lowest point. The scale at the point; for the upper measuring component, the upper measuring component can only move upward. In the initial state, the pawl will engage in the groove in the ratchet rack, preventing the pawl from rotating. The positioning rod will remain in the initial position without moving. When the water level begins to rise, the buoyancy of the float is greater than the weight of the float and the positioning rod. The positioning rod is subjected to an upward force, and the pawl slides along the ratchet rack until the water level reaches the highest point. When the water level drops, the pawl will engage in the groove in the ratchet rack, preventing the pawl from rotating. The positioning rod will remain in the highest position without moving.
[0008] Preferably, a first bolt passes through the lower end of the tension spring and is threaded onto the positioning rod, and a second bolt passes through the upper end of the tension spring and is threaded onto the pawl.
[0009] With the above structural design, after the pawl rotates, it will automatically reset under the action of the tension spring and re-engage in the tooth groove of the rack. It is also easy to replace the tension spring when it is damaged by seawater erosion.
[0010] Preferably, the pawl is fixedly connected to the hinge shaft, the hinge shaft is rotatably connected to the positioning rod, and a manual reset knob is fixedly connected to the end of the hinge shaft.
[0011] With the above structural design, the operator can rotate the hinge shaft and rotate the pawl to disengage the pawl from the tooth groove of the ratchet rack, making it easy for the operator to reset the pawl at the highest or lowest point to its initial position for the next use.
[0012] Preferably, a positioning cylinder is fixedly connected to the positioning rod, the positioning cylinder is sleeved on the frame of the support frame, and a third bolt is radially threaded through the cylinder wall of the positioning cylinder, with an anti-slip rubber pad fixedly connected to the bottom end of the third bolt.
[0013] The above structural design can fix the positioning rod in place and prevent it from moving at will.
[0014] Preferably, the clamping assembly includes a locking sleeve sleeved on the main longitudinal rod, a fourth bolt passing through the locking sleeve, a first clamping plate and a second clamping plate fixedly connected to the locking sleeve, and a fifth bolt passing through the first clamping plate. The main longitudinal rod has an installation hole that matches the fourth bolt.
[0015] By adopting the above structural design, the position of the support frame on the main longitudinal rod is adjusted according to the elevation of the water area being measured, ensuring that the measuring device can cover the highest and lowest tides of the water area.
[0016] Compared with the prior art, the beneficial effects of this utility model are:
[0017] This device can measure the water level at the highest and lowest tides, eliminating the need for staff to monitor the water level in real time, thus greatly saving labor costs. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of this utility model;
[0019] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A;
[0020] Figure 3 This utility model Figure 2 A cross-sectional structural diagram;
[0021] Figure 4 This utility model Figure 2 A schematic diagram of the structure in cross-section of the middle DD. Detailed Implementation
[0022] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 This utility model provides a technical solution: a movable water level measuring device, including a main longitudinal rod 1. The upper end of the main longitudinal rod 1 is fixedly connected to a clamping assembly for connecting a steel platform, and the lower end of the main longitudinal rod 1 is fixedly connected to a support frame 2. The support frame 2 is a rectangular frame structure, arranged longitudinally, and a measuring ruler 3 is fixedly connected to the support frame 2. The support frame is provided with upper and lower measuring components of the same structure, which are arranged symmetrically along the central plane. The upper measuring component is used to measure the highest point of the water level, and the lower measuring component is used to measure the lowest point of the water level.
[0023] The upper measuring component includes a ratchet rack 41 fixedly connected to the support frame 2, a pawl 42 meshing with the ratchet rack 41, a positioning rod 43 sleeved on the ratchet rack 41, and a float 44 fixedly connected to the positioning rod 43. The positioning rod 43 has a through-hole that matches the ratchet rack 41. The pawl 42 is rotatably connected to the positioning rod 43. The pawl 42 is fixedly connected to the upper end of the tension spring 45, and the lower end of the tension spring 45 is fixedly connected to the positioning rod 43. The float 44 is a float filled with a lead weight with a density ≥11.3g / cm³. The buoyancy force on the float 44 is greater than the weight of the float and the positioning rod.
[0024] To prevent the pawl 42 from rotating too much, a wedge block 8 is fixedly connected to the positioning rod 43. When the pawl 42 rotates to the point where it can disengage from the tooth groove in the ratchet rack 41, it is the maximum angle of rotation of the pawl 42. At this time, the outer wall of the pawl 42 abuts against the wedge block 8, and the inclined surface of the wedge block 8 contacts the pawl 42, forming a mechanical stop.
[0025] For the lower measuring component, the lower measuring component can only move downwards. When the positioning rod 43 moves downwards, the pawl 42 slides along the ratchet rack 41. When the positioning rod 43 is subjected to an upward force, the pawl 42 will engage in the groove of the ratchet rack 41, preventing the positioning rod 43 from moving upwards. When the float 44 floats on the water surface, the buoyancy force on the float 44 is greater than the weight of the float 44 and the positioning rod 43, so the positioning rod 43 cannot move downwards. When the water level drops, under the action of the weight of the float 44 and the positioning rod 43, the positioning rod 43 will move downwards, and the pawl 42 will slide along the ratchet rack 41. The positioning rod 43 moves with the water level to the lowest point. When the water level begins to rise, the pawl 42 will engage in the groove of the ratchet rack 41, preventing the pawl 42 from rotating. The float 44 will not move upwards with the water level, and the positioning rod 43 will remain at the position when the water level reaches the lowest point.
[0026] For the upper measuring component, the upper measuring component and the lower measuring component have the same structure and are arranged symmetrically in mirror image along the central plane. The upper measuring component can only move upward. In the initial state, the pawl 42 will be engaged in the tooth groove in the ratchet 41, preventing the pawl 42 from rotating. The positioning rod 43 will stay in the initial position without moving. When the water level begins to rise, the buoyancy of the float 44 is greater than the weight of the float 44 and the positioning rod 43. The positioning rod 43 is subjected to an upward force, and the pawl 42 slides along the ratchet 41 until the water level reaches the highest point. When the water level drops, the pawl 42 will be engaged in the tooth groove in the ratchet 41, preventing the pawl 42 from rotating. The positioning rod 43 will stay in the highest point without moving.
[0027] The lower end of the tension spring 45 is fitted with a first bolt 451, which is threaded onto the positioning rod. The upper end of the tension spring 45 is fitted with a second bolt 452, which is threaded onto the pawl 42.
[0028] The pawl 42 is fixedly connected to the hinge shaft 421, which is rotatably connected to the positioning rod 43. A manual reset knob 422 is fixedly connected to the end of the hinge shaft 421. This allows the operator to rotate the hinge shaft via the manual reset knob 422, thereby rotating the pawl 42 to disengage it from the tooth groove of the ratchet rack 41. This facilitates the operator in resetting the pawl 42 at its highest or lowest point to its initial position for future measurements.
[0029] A positioning cylinder 47 is fixedly connected to the positioning rod 43. The positioning cylinder 47 is sleeved on the side frame of the support frame 2. A third bolt 48 is threaded radially through the cylinder wall of the positioning cylinder 47. An anti-slip rubber pad is fixedly connected to the bottom end of the third bolt 48. The operator rotates the third bolt 48 so that the bottom end of the third bolt 48 abuts against the side frame of the support frame 2, thereby fixing the positioning rod 43 and preventing it from moving freely.
[0030] The clamping assembly includes a locking sleeve 61 fitted onto the main longitudinal rod 1, a fourth bolt 64 passing through the locking sleeve 61, a first clamping plate 62 and a second clamping plate 63 fixedly connected to the locking sleeve 61, and a fifth bolt 65 passing through the first clamping plate 62. The main longitudinal rod 1 has mounting holes 66 that match the fourth bolt 64, and an anti-slip pad is fixedly connected to the bottom end of the fifth bolt 65. This allows operators to adjust the position of the support frame 2 on the main longitudinal rod 1 according to the elevation of the water area being measured, ensuring that the measuring device can cover the highest and lowest tides of the water area.
[0031] Working principle: During measurement, multiple sets of this device are used and fixed to the steel platform. First, the operator moves the locking sleeve 61 to a suitable height. Then, the operator uses the fourth bolt 64 to pass through the locking sleeve 61 and the main longitudinal rod 1, and then uses a nut to tighten the fourth bolt 64. Next, the operator clamps the first clamping plate 62 and the second clamping plate 63 onto the steel platform. The operator rotates the fifth bolt 65 so that the fifth bolt 65 abuts against the steel platform, thereby fixing the device to the steel platform.
[0032] Water level measurement:
[0033] For the lower measuring component, when the float 44 floats on the water surface, the buoyancy force on the float 44 is greater than the weight of the float 44 and the positioning rod 43, so the positioning rod 43 cannot move downward. When the water level drops, the positioning rod 43 will move downward under the action of the weight of the float 44 and the positioning rod 43, and the pawl 42 will slide along the ratchet rack 41. The positioning rod 43 will move to the lowest point of the water level. When the water level starts to rise, the pawl 42 will be locked into the tooth groove in the ratchet rack 41, preventing the pawl 42 from rotating. The float 44 will not move upward with the water level, and the positioning rod 43 will stay at the position when the water level reaches the lowest point. When the staff observes the scale of the positioning rod 43, the staff first tightens the third bolt 48 so that the bottom end of the third bolt 48 abuts against the frame of the support frame 2 to fix the positioning rod 43 and prevent the positioning rod 43 from moving at will. Then the scale at which the positioning rod 43 stays is recorded.
[0034] For the upper measuring component, in the initial state, the pawl 42 will engage in the groove of the ratchet 41, preventing the pawl 42 from rotating, and the positioning rod 43 will remain in the initial position without moving. When the water level begins to rise, the buoyancy of the float 44 is greater than the weight of the float 44 and the positioning rod 43, and the positioning rod 43 is subjected to an upward force. The pawl 42 slides along the ratchet 41 until the water level reaches the highest point. When the water level drops, the pawl 42 will engage in the groove of the ratchet 41, preventing the pawl 42 from rotating, and the positioning rod 43 will remain in the highest position without moving. When the staff observes the scale of the positioning rod 43, the staff first tightens the third bolt 48 so that the bottom end of the third bolt 48 abuts against the frame of the support frame 2 to fix the positioning rod 43 and prevent the positioning rod 43 from moving at will, and then records the scale at which the positioning rod 43 is at this time.
[0035] The structures, proportions, and sizes illustrated in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art in understanding and reading the content disclosed herein. They are not intended to limit the scope of this utility model and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this utility model, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this utility model's implementation.
[0036] The present invention has been described above with reference to preferred embodiments, but the scope of protection of the present invention is not limited thereto. All technical solutions falling within the scope of the claims are within the scope of protection of the present invention. Various modifications can be made to the present invention, and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way.
Claims
1. A portable water level measuring device, comprising a main longitudinal rod (1), characterized in that: The upper end of the main longitudinal rod (1) is fixedly connected to a clamping assembly for connecting the steel platform, and the lower end of the main longitudinal rod (1) is fixedly connected to a support frame (2). A measuring ruler (3) is fixedly connected to the support frame (2). Upper and lower measuring assemblies with the same structure are set on the support frame. The two are arranged symmetrically in a mirror image along the central plane. The upper measuring assembly is used to measure the highest point of the water level, and the lower measuring assembly is used to measure the lowest point of the water level.
2. The portable water level measuring device according to claim 1, characterized in that: The lower measuring component includes a ratchet rack (41) fixedly connected to the support frame (2), a pawl (42) meshing with the ratchet rack (41), a positioning rod (43) sleeved on the ratchet rack (41), and a float (44) fixedly connected to the positioning rod (43). The pawl (42) is rotatably connected to the positioning rod (43), and the upper end of the pawl (42) is fixedly connected to the tension spring (45). The lower end of the tension spring (45) is fixedly connected to the positioning rod (43).
3. The portable water level measuring device according to claim 2, characterized in that: The lower end of the tension spring (45) is provided with a first bolt (451), which is threaded onto the positioning rod. The upper end of the tension spring (45) is provided with a second bolt (452), which is threaded onto the pawl (42).
4. A portable water level measuring device according to claim 2, characterized in that: The pawl (42) is fixedly connected to the hinge shaft (421), the hinge shaft (421) is rotatably connected to the positioning rod (43), and the end of the hinge shaft (421) is fixedly connected to the manual reset knob (422).
5. A portable water level measuring device according to claim 2, characterized in that: The positioning rod (43) is fixedly connected to the positioning cylinder (47), the positioning cylinder (47) is sleeved on the side of the support frame (2), and a third bolt (48) is radially threaded through the cylinder wall of the positioning cylinder (47), and an anti-slip rubber pad is fixedly connected to the bottom end of the third bolt (48).
6. A portable water level measuring device according to any one of claims 1 to 5, characterized in that: The clamping assembly includes a locking sleeve (61) sleeved on the main longitudinal rod (1), a fourth bolt (64) passing through the locking sleeve (61), a first clamping plate (62) and a second clamping plate (63) fixedly connected to the locking sleeve (61), and a fifth bolt (65) passing through the first clamping plate (62). The main longitudinal rod (1) has a mounting hole (66) that matches the fourth bolt (64).