A sediment measuring device suitable for river management

By designing a river channel measuring device including an automatic cleaning device, the problem of monitoring sensors being attached to silt and sand and suspended objects in the prior art affecting measurement accuracy, and automatic cleaning and efficient monitoring are achieved.

CN118518837BActive Publication Date: 2025-02-07CHINA THREE GORGES CORPORATION +1
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Patent Information

Application Number
CN202410566248.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-05-09
Publication Date
2025-02-07
Estimated Expiration
2044-05-09

AI Technical Summary

Technical Problem

The monitoring sensors of the existing online monitoring platform for suspended silt and sand on water are easily attached to silt and sand and suspended matter after being used in water for a long time, which affects the accuracy of measurement and requires manual cleaning.

Method used

A measuring device including a hull, a data processing terminal, a lifting mechanism, a fixing plate, a rotary ring, a cleaning plate, a water spray pipe and an apertured protective cylinder are designed. The monitoring sensor is lifted and lowered by the lifting mechanism, and the cleaning plate and water spray pipe are used to automatically clean impurities on the surface of the monitoring sensor.

Benefits of technology

Automatic cleaning of monitoring sensors is realized, the accuracy and efficiency of measurement is improved, and the need for manual cleaning is avoided.

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Abstract

The present application relates to a sediment measurement device suitable for river management, including a hull, a data processing terminal is arranged inside the hull, a monitoring sensor is arranged on the left side of the hull and is lifted and lowered by a lifting mechanism, the monitoring data of the monitoring sensor is collected and processed by the data processing terminal, and a fixing plate is connected to the left side of the hull. The winding wheel releases the pull rope, the monitoring sensor and the perforated protective tube descend to the measuring point, and continuous online monitoring is achieved through the cooperation of the monitoring sensor and the data processing terminal. The perforated protective tube protects the monitoring sensor, and the monitoring sensor is prevented from colliding with the inner wall of the perforated protective tube under the action of the tension spring. After the monitoring sensor rises between the cleaning plates, the water spray pipe sprays water, the cleaning plates rotate, and the bristle part removes impurities attached to the surface of the monitoring sensor, with high cleaning efficiency, avoiding the influence of attachments on the measurement, and ensuring the accuracy of the measurement.
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Description

Technical Field

[0001] The invention belongs to the technical field of sediment measurement, and in particular relates to a sediment measuring device suitable for river channel management. Background Art

[0002] In the control of soil erosion, river sediment content monitoring is of great significance. In order to shorten the measurement cycle and monitor the changes in river sediment content in real time, an online monitoring platform for suspended sediment above water will be used, which can directly output the sediment content value, water depth and temperature value of the measuring point, and automatically calculate the average sediment content and sediment transport rate of the section to achieve continuous online monitoring.

[0003] The Chinese patent with the patent publication number CN115266631B discloses an online monitoring platform for suspended sediment in water, including a monitoring sensor component, floating object AI video monitoring, a data processing center and a power supply system.

[0004] The patented underwater monitoring sensor is installed in a sleeve to prevent it from being entangled by hard floating objects in the water. However, when the monitoring sensor is in the water for a long time, impurities such as mud and suspended matter in the water will adhere to the surface of the monitoring sensor. When it is necessary to change the monitoring position or monitor the water body, the surface of the monitoring sensor needs to be manually cleaned. The attachments will also affect the normal measurement of the monitoring sensor and affect the accuracy of the measurement. Summary of the invention

[0005] In order to solve the above problems in the background technology, the present invention provides a sediment measuring device suitable for river management.

[0006] The technical solution is: a sediment measuring device suitable for river channel management, including a hull, a data processing terminal is arranged inside the hull, a monitoring sensor which is raised and lowered by a lifting mechanism is arranged on the left side of the hull, the monitoring data of the monitoring sensor is collected and processed by the data processing terminal, a fixed plate is connected to the left side of the hull, a swivel driven by a driving mechanism is rotatably connected to the top of the fixed plate, a plurality of cleaning plates are connected to the top of the swivel at intervals, a brush part for cleaning the monitoring sensor is arranged on the inner side of the cleaning plate, a water spray pipe which supplies water by a water supply mechanism is arranged above the brush part, a plurality of guide rods are connected to the bottom of the fixed plate, a perforated protective tube for protecting the monitoring sensor is detachably slidably connected to the guide rod, and a tension spring is connected between the monitoring sensor and the bottom of the inner side of the perforated protective tube.

[0007] As a further preferred scheme, the lifting mechanism includes a support plate, the top of the hull is connected to the support plate, the upper part of the support plate is rotatably connected to a winding wheel and a guide wheel, the upper part of the support plate is connected to a servo motor for driving the winding wheel to rotate, a pull rope is wound around the winding wheel, the pull rope passes around the guide wheel, and the monitoring sensor is connected to the free end of the pull rope.

[0008] As a further preferred solution, the driving mechanism includes a gear ring and a driving gear, the rotating ring is connected to the gear ring, the fixed plate is mounted with a driving gear driven by a driving motor, and the driving gear is meshed with the gear ring.

[0009] As a further preferred embodiment, the water supply mechanism includes a water storage tank, a water storage tank is provided at the lower part of the hull, a pumping pipe for pumping water through a water pump is connected to the left part of the hull, the pumping pipe extends into the bottom of the water storage tank, a hose is connected between the top of the pumping pipe and the water spray pipe, and a filter is installed at the water inlet of the water storage tank.

[0010] As a further preferred embodiment, it also includes a pull rope cleaning mechanism, which includes a mounting plate, a mounting plate is slidably connected to the upper part of the support plate, two sliding frames are slidably connected to the mounting plate and are reset by a reset spring, and a plurality of rubber plates are connected to the sides of the two sliding frames that are close to each other, and the rubber plates are used to clean the pull rope.

[0011] As a further preferred solution, the water spray pipe is also provided with an upper water outlet end located above the rubber plate.

[0012] As a further preferred solution, it also includes a cover tube, wherein the bottom of the mounting plate is connected to a cover tube with a bottom opening, and the cover tube covers the cleaning plate and the monitoring sensor.

[0013] As a further preferred solution, it also includes an energy storage power supply system, which includes photovoltaic panels. The photovoltaic panels convert solar energy into electrical energy, and the electrical energy is stored in the energy storage power supply system to power the data processing terminal, the monitoring sensor, the servo motor and the drive motor.

[0014] As a further preferred scheme, it also includes a gear shaft, the left side of the hull is rotatably connected to the gear shaft, the perforated protective tube is connected to a rack meshing with the gear shaft, and the gear shaft is connected to a limit frame for limiting the perforated protective tube; multiple guide rods 2 are connected to the limit frame, and the top surface of the perforated protective tube is provided with multiple grooves that cooperate with guide rod 1 and guide rod 2.

[0015] The present invention has the following advantages: 1. The winding wheel relaxes the pull rope, and the monitoring sensor and the perforated protective cylinder descend to the measuring point. Continuous online monitoring is achieved through the cooperation of the monitoring sensor and the data processing terminal. The perforated protective cylinder protects the monitoring sensor. Under the action of the tension spring, the monitoring sensor is prevented from colliding with the inner wall of the perforated protective cylinder. After the monitoring sensor rises between the cleaning plates, the water spray pipe sprays water, the cleaning plates rotate, and the brush part removes impurities attached to the surface of the monitoring sensor. The cleaning efficiency is high, and the attachments are prevented from affecting the measurement, thereby ensuring the accuracy of the measurement.

[0016] 2. When the monitoring sensor and the perforated protective tube descend, the limit frame is flipped 90 degrees through the rack and gear shaft, and the guide rods 1 and 2 guide the descending perforated protective tube. When the monitoring sensor is online monitoring, the limit frame limits the perforated protective tube, making the position of the perforated protective tube and the monitoring sensor in the river channel more stable, which is conducive to the monitoring of the river by the monitoring sensor.

[0017] 3. Under the action of the return spring, the rubber plate abuts against the pull rope, and the rubber plate can be deformed and contact the pull rope. When the reel reels the pull rope, the water in the hose is sprayed out from the upper water outlet at the same time. The rubber plate scrapes off the impurities on the surface of the pull rope through friction and rinses it with water, thereby automatically cleaning the pull rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the cross-sectional structure of the hull of the present invention.

[0020] Figure 3 For the present invention Figure 2 Schematic diagram of some structures in .

[0021] Figure 4 It is a schematic diagram of the state of the monitoring sensor and the perforated protective tube when they are descending.

[0022] Figure 5 It is a schematic diagram of the structure of the monitoring sensor, the fixing plate, the rotating ring, the cleaning plate, the perforated protective cylinder and the lifting mechanism of the present invention.

[0023] Figure 6 It is a schematic diagram of the structure of the monitoring sensor and the lifting mechanism of the present invention.

[0024] Figure 7 It is a schematic diagram of the structure of the monitoring sensor, fixing plate, rotating ring, gear ring, driving gear and cleaning plate of the present invention.

[0025] Figure 8 The figure is a schematic diagram of the positions of the water spray pipe, the hose, the water suction pipe, the cover tube and the mounting plate of the present invention, wherein the cover tube and the mounting plate are cut away.

[0026] Fig. 9 It is a schematic structural diagram of the water spray pipe, pull rope, mounting plate, sliding frame and rubber plate of the present invention.

[0027] Fig.10 The figure is a schematic diagram of the relative positions of the monitoring sensor, the pull rope, the bristle part, the rubber plate and the water spray pipe of the present invention.

[0028] Fig.11 It is a schematic structural diagram of the tension spring and the limit frame of the present invention.

[0029] Fig.12 For the present invention Fig.11 Enlarged view of point B in .

[0030] Fig.13 For the present invention Figure 4 Enlarged view of point A in .

[0031] Wherein: 1-hull, 2-data processing terminal, 3-monitoring sensor, 31-support plate, 32-winding wheel, 33-servo motor, 34-pull rope, 35-guide wheel, 4-fixed plate, 41-guide rod one, 5-swivel, 51-tooth ring, 52-driving gear, 6-cleaning plate, 61-brush part, 7-spray pipe, 70-upper water outlet, 71-hose, 72-suction pipe, 73-water storage tank, 74-filter, 8-perforated protective cylinder, 80-groove, 81-tension spring, 90-cover cylinder, 91-mounting plate, 92-sliding frame, 93-rubber plate, 10-photovoltaic panel, 111-limiting frame, 1110-guide rod two, 112-gear shaft, 113-rack. DETAILED DESCRIPTION

[0032] The technical solution is further described below in conjunction with specific embodiments. It should be noted that the words indicating directions such as up, down, left, and right mentioned in this article are only for the position of the structure shown in the corresponding drawings. The words such as connection and coupling in this application include direct and indirect connection (coupling) unless otherwise specified.

[0033] Example 1: A sediment measuring device suitable for river management, referring to Figure 1-Figure 13, including a hull 1, a data processing terminal 2, a monitoring sensor 3, a lifting mechanism, a fixing plate 4, a guide rod 41, a swivel 5, a driving mechanism, a cleaning plate 6, a water spray pipe 7, a water supply mechanism, a perforated protective tube 8 and a tension spring 81. The hull 1 is provided with a data processing terminal 2 inside, a monitoring sensor 3 is provided on the left side of the hull 1, a lifting mechanism is provided on the hull 1, the monitoring sensor 3 is lifted and lowered by the lifting mechanism, and the monitoring data of the monitoring sensor 3 is collected and processed by the data processing terminal 2. The left side of the hull 1 is connected with a fixing plate 4, and the fixing plate 4 is on the top The fixed plate 4 is rotatably connected to a swivel 5 driven by a driving mechanism, and four cleaning plates 6 are fixedly connected to the top of the swivel 5 at circumferentially uniform intervals. The inner sides of the four cleaning plates 6 are provided with brush parts 61 for cleaning the monitoring sensor 3, and a water spray pipe 7 for supplying water through a water supply mechanism is provided above the brush parts 61. Three guide rods 41 are welded to the bottom of the fixed plate 4, and a perforated protective tube 8 for protecting the monitoring sensor 3 is detachably slidably connected to the three guide rods 41, and a tension spring 81 is fixedly connected between the monitoring sensor 3 and the inner bottom of the perforated protective tube 8.

[0034] refer to Figure 1-Figure 6 The lifting mechanism includes a support plate 31, a winding wheel 32, a servo motor 33, a pull rope 34 and a guide wheel 35. A support plate 31 is welded to the left side of the top of the hull 1. The upper part of the support plate 31 is rotatably connected to the winding wheel 32 and the guide wheel 35. The upper part of the support plate 31 is bolted with a servo motor 33. The output shaft of the servo motor 33 is fixedly connected to the winding wheel 32. A pull rope 34 is wound around the winding wheel 32. The pull rope 34 passes around the guide wheel 35. The monitoring sensor 3 is connected to the free end of the pull rope 34.

[0035] refer to Figure 5 and Figure 7 The driving mechanism includes a gear ring 51 and a driving gear 52. The gear ring 51 is connected to the rotating ring 5, and the driving gear 52 is installed at the rear of the fixed plate 4. The driving motor is bolted to the rear of the fixed plate 4. The output shaft of the driving motor is fixedly connected to the driving gear 52, and the driving gear 52 is meshed with the gear ring 51.

[0036] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Fig.10 The water supply mechanism includes a hose 71, a pumping pipe 72, a water storage tank 73 and a filter 74. A water storage tank 73 is provided at the lower part of the hull 1. A pumping pipe 72 for pumping water through a water pump is connected to the left part of the hull 1. The pumping pipe 72 extends into the bottom of the water storage tank 73. A hose 71 is connected between the top of the pumping pipe 72 and the water spray pipe 7. A filter 74 is installed at the water inlet of the water storage tank 73.

[0037] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Fig.11 , Fig.12 and Fig.13 , further comprising a limit frame 111, a guide rod 1110, a gear shaft 112 and a rack 113. The left side of the hull 1 is rotatably connected to the gear shaft 112, and the right side of the perforated protective tube 8 is fixedly connected to the rack 113 meshing with the gear shaft 112. The gear shaft 112 is connected to the limit frame 111 for limiting the perforated protective tube 8; three guide rods 1110 are welded to the limit frame 111, and the top surface of the perforated protective tube 8 is provided with three grooves 80 that cooperate with the guide rod 1 41 and the guide rod 1110. The position of the groove 80 is as shown in FIG. Fig.13 shown.

[0038] Initially, the tension spring 81 is in a stretched state, and the top of the perforated protective tube 8 abuts against the bottom of the fixed plate 4. After the hull 1 is controlled to move to the position of the river channel to be measured, the servo motor 33 is controlled to drive the winding wheel 32 to rotate counterclockwise, the winding wheel 32 relaxes the pull rope 34, and the tension spring 81 recovers, so that the monitoring sensor 3 drops into the perforated protective tube 8 under the action of the tension spring 81 and gravity.

[0039] When the tension spring 81 is restored, the reel 32 continues to loosen the pull rope 34, and the monitoring sensor 3, the perforated protective tube 8 and the rack 113 are lowered into the water together by gravity. Under the meshing action, the rack 113 causes the gear shaft 112 to rotate counterclockwise, driving the limit frame 111 to rotate counterclockwise around the gear shaft 112, and the limit frame 111 flips 90 degrees to the bottom of the perforated protective tube 8; the monitoring sensor 3 and the perforated protective tube 8 continue to descend, the rack 113 will separate from the gear shaft 112, and after the groove 80 on the perforated protective tube 8 leaves the guide rod 1 41, the groove 80 cooperates with the guide rod 2 1110, so that the descending perforated protective tube 8 is guided by the guide rod 1 41 and the guide rod 2 1110. For specific positions, refer to Figure 4 ; After the monitoring sensor 3 and the perforated protective tube 8 are lowered to the measuring point, the sediment content value, water depth and temperature value of the measuring point are output through the cooperation of the monitoring sensor 3 and the data processing terminal 2, and the average sediment content and sediment transport rate of the section are automatically calculated, thereby realizing continuous online monitoring; the perforated protective tube 8 can protect the monitoring sensor 3 to prevent the monitoring sensor 3 from being affected by foreign matter in the water. Since a tension spring 81 is fixedly connected between the monitoring sensor 3 and the bottom of the perforated protective tube 8, the monitoring sensor 3 can be kept inside the perforated protective tube 8 under the action of the tension spring 81, so that the monitoring sensor 3 is prevented from being impacted by the water flow and colliding with the inner wall of the perforated protective tube 8. At the same time, the limit frame 111 can limit the perforated protective tube 8, so that the position of the perforated protective tube 8 and the monitoring sensor 3 in the river channel is more stable, which is beneficial to the monitoring of the river by the monitoring sensor 3.

[0040] The water in the river can be filtered through the filter 74 and stored in the water storage tank 73. When the surface of the monitoring sensor 3 needs to be cleaned, the servo motor 33 is controlled to drive the winding wheel 32 to rotate clockwise, and the winding wheel 32 winds up the pull rope 34. The pull rope 34 pulls the monitoring sensor 3 to rise, and the monitoring sensor 3 drives the tension spring 81, the perforated protective tube 8 and the rack 113 to rise. Similarly, the guide rod 1 41 and the guide rod 2 1110 play a guiding role; when the rack 113 is engaged with the gear shaft 112, the gear shaft 112 rotates clockwise to reset, and the limit frame 111 flips 90 degrees clockwise to reset; when the top of the perforated protective tube 8 contacts the bottom of the fixed plate 4, the perforated protective tube 8 stops rising, while the monitoring sensor 3 continues to rise, the tension spring 81 is stretched, and the monitoring sensor 3 leaves the perforated protective tube 8.

[0041] When the monitoring sensor 3 rises to between the four cleaning plates 6, the water pump is controlled to pump water, and the pumping pipe 72 pumps the water in the water storage tank 73 into the hose 71, and the water is sprayed out from the water spray pipe 7 and sprayed toward the monitoring sensor 3; the driving motor is controlled to rotate the driving gear 52, and the driving gear 52 drives the gear ring 51 to rotate, thereby driving the rotating ring 5 and the cleaning plate 6 to rotate, and the brush part 61 on the cleaning plate 6 cleans the surface of the monitoring sensor 3 under the flushing of water, thereby removing impurities such as mud and suspended matter attached to the surface of the monitoring sensor 3, with high cleaning efficiency, avoiding the attachment from affecting the normal measurement of the monitoring sensor 3, and ensuring the accuracy of the measurement.

[0042] Example 2: Based on Example 1, refer to Figure 8-Figure 10 , and also includes a pull rope cleaning mechanism, which includes a mounting plate 91, a sliding frame 92 and a rubber plate 93. The upper part of the support plate 31 is slidably connected to the mounting plate 91, and two sliding frames 92 are slidably connected to the mounting plate 91. A return spring is fixedly connected between the sliding frame 92 and the mounting plate 91, and three rubber plates 93 are fixedly connected to the side where the two sliding frames 92 are close to each other. The rubber plate 93 is used to clean the pull rope 34; the water spray pipe 7 is also provided with an upper water outlet 70 located above the rubber plate 93.

[0043] Under the action of the return spring, the rubber plate 93 contacts the pull rope 34 and can be deformed. When the reel 32 reels the pull rope 34, the water in the hose 71 can be sprayed out from the upper water outlet 70 and sprayed toward the rubber plate 93 at the same time. The rubber plate 93 scrapes off impurities on the surface of the pull rope 34 through friction and rinses it with water, thereby automatically cleaning the pull rope 34.

[0044] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 8, and also includes a cover tube 90, and the bottom of the mounting plate 91 is fixedly connected to the cover tube 90 with a bottom opening; when the brush part 61 cleans the monitoring sensor 3, the cover tube 90 covers the four cleaning plates 6 and the monitoring sensor 3 to prevent sewage from splashing.

[0045] refer to Figure 1 , and also includes an energy storage power supply system, which includes a photovoltaic panel 10. The photovoltaic panel 10 converts solar energy into electrical energy, and stores the electrical energy through the energy storage power supply system, thereby powering the data processing terminal 2, the monitoring sensor 3, the servo motor 33 and the drive motor.

[0046] The above description is only an embodiment of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A sediment measurement device suitable for river management, comprising a hull (1), wherein a data processing terminal (2) is arranged inside the hull (1), and characterized in that: A monitoring sensor (3) is provided on the left side of the hull (1) and is lifted and lowered by a lifting mechanism. Monitoring data of the monitoring sensor (3) is collected and processed by the data processing terminal (2). A fixed plate (4) is connected to the left side of the hull (1). A rotating ring (5) driven by a driving mechanism is rotatably connected to the top of the fixed plate (4). A plurality of cleaning plates (6) are connected to the top of the rotating ring (5) at intervals. A brush portion (61) for cleaning the monitoring sensor (3) is provided on the inner side of each cleaning plate (6). A water spray pipe (7) supplied with water by a water supply mechanism is provided above the brush portion (61). A plurality of guide rods (41) are connected to the bottom of the fixed plate (4). A perforated protective tube (8) for protecting the monitoring sensor (3) is detachably slidably connected to the guide rods (41). A tension spring (81) is connected between the monitoring sensor (3) and the inner bottom of the perforated protective tube (8).

2. A sediment measuring device suitable for river management as claimed in claim 1, characterized in that: The lifting mechanism comprises a support plate (31), the top of the hull (1) is connected to the support plate (31), the upper part of the support plate (31) is rotatably connected to a winding wheel (32) and a guide wheel (35), the upper part of the support plate (31) is connected to a servo motor (33) for driving the winding wheel (32) to rotate, a pull rope (34) is wound around the winding wheel (32), the pull rope (34) is wound around the guide wheel (35), and the monitoring sensor (3) is connected to the free end of the pull rope (34).

3. A sediment measuring device suitable for river management as claimed in claim 2, characterized in that: The driving mechanism comprises a gear ring (51) and a driving gear (52); the gear ring (51) is connected to the rotating ring (5); the driving gear (52) driven by a driving motor is mounted on the fixed plate (4); the driving gear (52) meshes with the gear ring (51).

4. A sediment measuring device suitable for river management as claimed in claim 3, characterized in that: The water supply mechanism comprises a water storage tank (73). The lower part of the hull (1) is provided with the water storage tank (73). The left part of the hull (1) is connected to a water pumping pipe (72) for pumping water by a water pump. The water pumping pipe (72) extends into the bottom of the water storage tank (73). A hose (71) is connected between the top end of the water pumping pipe (72) and the water spraying pipe (7). A filter (74) is installed at the water inlet of the water storage tank (73).

5. A sediment measuring device suitable for river management as claimed in claim 4, characterized in that: It also includes a pull rope cleaning mechanism, the pull rope cleaning mechanism including a mounting plate (91), the upper part of the support plate (31) is slidably connected to the mounting plate (91), the mounting plate (91) is slidably connected to two sliding frames (92) reset by reset springs, and the two sliding frames (92) are connected to a plurality of rubber plates (93) on the sides close to each other, and the rubber plates (93) are used to clean the pull rope (34).

6. A sediment measuring device suitable for river management as claimed in claim 5, characterized in that: The water spray pipe (7) is also provided with an upper water outlet end (70) located above the rubber plate (93).

7. A sediment measuring device suitable for river management as claimed in claim 6, characterized in that: It also comprises a cover tube (90), the bottom of the mounting plate (91) is connected to a cover tube (90) with a bottom opening, and the cover tube (90) covers the cleaning plate (6) and the monitoring sensor (3).

8. A sediment measuring device suitable for river management as claimed in claim 7, characterized in that: It also includes an energy storage power supply system, the energy storage power supply system including a photovoltaic panel (10), the photovoltaic panel (10) converts solar energy into electrical energy, and stores the electrical energy through the energy storage power supply system to supply power to the data processing terminal (2), the monitoring sensor (3), the servo motor (33) and the drive motor.

9. A sediment measuring device suitable for river management as claimed in claim 8, characterized in that: The invention also comprises a gear shaft (112), the left side of the hull (1) being rotatably connected to the gear shaft (112), the perforated protective tube (8) being connected to a rack (113) meshing with the gear shaft (112), the gear shaft (112) being connected to a limit frame (111) for limiting the position of the perforated protective tube (8); the limit frame (111) being connected to a plurality of guide rods (1110), the top surface of the perforated protective tube (8) being provided with a plurality of grooves (80) cooperating with the guide rods (41) and (1110).

Citation Information

Patent Citations

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    CN115266631B

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    CN113859451A

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    CN117990165A