Rainwater drainage equipment and drainage method for highway construction in rainy season

Abstract

The invention discloses rainwater drainage equipment and drainage method for highway construction in rainy seasons, and relates to the field of highway construction.The rainwater drainage equipment comprises a vehicle body and a water pump body, a base is arranged on the inner side of the vehicle body, an adjusting plate is rotationally arranged at one end of the top of the base, and the water pump body is installed on the adjusting plate; a winding drum is rotationally arranged on the inner side of the vehicle body and located at the front end of the water pump body, one side of the winding drum is connected with a full gear, one side of an adjusting plate is connected with a residual gear capable of being meshed with the adjusting plate, and one end of the full gear is connected with a two-way threaded rod. In the adjusting process, a residual gear can be engaged with a full gear, limiting and self-locking of the winding drum are achieved through the residual gear, under cooperation of a threaded sleeve and a supporting rod, an attaching plate on the outer wall of the winding drum is shrunk inwards, the outer diameter of the winding drum is shrunk, and the winding drum can be adjusted conveniently. And the reduced outer diameter is used for normal expansion drainage of the water hose wound on the outer wall of the winding drum.

Description

Technical Field

[0001] The present invention relates to the field of highway construction, in particular to rainwater discharge equipment and a method for rainwater discharge used in highway construction during rainy season. Background Art

[0002] Drainage is very important in highway construction. If rainwater or groundwater cannot be drained away in time, it will easily accumulate under the road surface or roadbed, causing road damage, subsidence or even cracking. The accumulated water will also seep into the roadbed, causing soil softening and affecting the stability and bearing capacity of the road surface. Among them, in the drainage system of highway construction, water collection wells are a commonly used facility that collects and gathers water sources.

[0003] Since most water collection wells are outdoors, the water in the water collection wells will accumulate quickly in rainy weather, so it is necessary to drain the water in time. The existing drainage method is to connect a water hose through a water pump, connect one end of the water hose to the water faucet and put it into the water collection well, and then start the water pump to drain the water in the water collection well. Since the depth of the water collection well is different at different positions, if the water hose is too long, it may cause the water hose in the water collection well to be excessively bent. At the same time, if the ground is uneven, the water flow in the curved part is blocked, resulting in poor water flow. If the water hose is too short, it cannot completely discharge the water in the water collection well, affecting the overall drainage efficiency. And each time the drainage is completed and goes to the next water collection well, the staff needs to organize and store the water hose again, which wastes too much manpower and material resources in the process.

[0004] In summary, if the water hose is too long or too short during the drainage process, it will affect the overall drainage efficiency, and the staff will need to organize and store the water hose after drainage, which will waste too much manpower and material resources. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a rainwater drainage equipment and drainage method for highway construction in the rainy season, so as to solve the technical problem that the water hose is too long or too short during the drainage process, which will affect the overall drainage efficiency, and the staff need to organize and store the water hose after drainage, which wastes too much manpower and material resources in the process.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: A rainwater drainage device for highway construction in the rainy season, comprising a vehicle body and a water pump body, wherein a base is provided on the inner side of the vehicle body, an adjustment plate is rotatably provided on one end of the top of the base, and the water pump body is mounted on the adjustment plate, and a take-up drum is rotatably provided on the inner side of the vehicle body at the front end of the water pump body, one side of the take-up drum is connected to a full gear, wherein one side of the adjustment plate is connected to a residual gear that can mesh with the take-up drum; One end of the full gear is connected to a bidirectional threaded rod, one end of the bidirectional threaded rod passes through the winding drum, the outer wall of the winding drum is retractably provided with an array of covering plates that cooperate with the bidirectional threaded rod, and the outer wall of the winding drum is surrounded by a water hose, one end of the water hose is connected to a water faucet.

[0007] By adopting the above technical solution, the electric slider cooperates with the adjusting rod to make the adjusting plate drive the water pump to be in an inclined state. During the adjustment process, the residual gear will engage with the full gear, and the winding drum will be limited and self-locked by the residual gear to ensure that the winding drum will not rotate due to external vibrations during the drainage process. With the cooperation of the threaded sleeve and the support rod, the covering plate on the outer wall of the winding drum is contracted inward to reduce the outer diameter of the winding drum itself. At this time, when the water pump body is pumping water, its reduced outer diameter is used for the water hose wound on the outer wall of the winding drum to expand and drain normally.

[0008] The present invention is further configured such that a second branch pipe is provided on the side of the winding drum away from the full gear, and the output end of the water pump body is connected to the first branch pipe, one end of the first branch pipe is connected to the second branch pipe, and one end of the first branch pipe is rotatably arranged, and at the same time, one end of the second branch pipe and the winding drum are also rotatably arranged.

[0009] Preferably, the second branch pipe is used to facilitate the drainage of water in the water tank into the first branch pipe. At the same time, the first branch pipe is rotatably arranged. During the tilting of the water pump body, the first branch pipe itself rotates accordingly, effectively preventing bending between the second branch pipe and the winding drum. The second branch pipe and the winding drum are also rotatably arranged, so that when the staff rotates the winding drum, the second branch pipe itself will not be displaced, thereby ensuring the sealing of the entire drainage process.

[0010] The present invention is further configured such that a water trough is provided on one side of the second branch pipe in the winding drum, and a water outlet is opened in the water trough, which is connected to one end of the water hose, and the connections between the second branch pipe and the water trough, and the water outlet and the water hose are all sealed.

[0011] Preferably, through the cooperation of the water faucet and the water hose, the water in the water collection well will be discharged into the water tank through the water outlet, and then discharged from the water pump body with the cooperation of the second branch pipe and the first branch pipe. The setting of the water tank itself is convenient for collecting the residual water in the subsequent water pump to prevent the water from flowing back through the second branch pipe and the first branch pipe.

[0012] The present invention is further configured such that an electric slide is provided on the base, wherein an electric slider is slidably provided in the electric slide, an adjustment rod is hinged on the top of the electric slider, and the other end of the adjustment rod is hinged to the adjustment plate.

[0013] Preferably, the electric slider is moved to one side by the action of the electric slide. During this process, the adjustment rod on the top of the electric slider props up the adjustment plate so that it is tilted on the base.

[0014] The present invention is further configured such that the outer wall of the bidirectional threaded rod is provided with a threaded sleeve symmetrically slidably provided, wherein the outer wall of the threaded sleeve is hinged with an array of support rods, and the other end of the support rod is hinged to the covering plate.

[0015] Preferably, when the bidirectional threaded rod rotates through the full gear, it will drive the threaded sleeve to slide inward. During this process, the threaded sleeve pulls the hinged support rod, so that one end of the support rod pulls the covering plate inward, thereby reducing the outer diameter of the winding drum itself.

[0016] The present invention is further configured such that track wheels are provided at the bottom of the vehicle body.

[0017] As a preference, under the action of the track wheels, facing a complex environment, the staff can drive the vehicle body to move to different water collection wells, thereby improving the overall practicality of the device.

[0018] The present invention is further configured such that a clamping ring cooperating with the faucet is provided at the front end of the base, and a protective cover is detachably provided on the inner wall of the clamping ring.

[0019] Preferably, after the subsequent drainage is completed, the water faucet will be limited by the action of the clamping ring. When the vehicle body moves, the water faucet will swing with the water hose, ensuring the stability of the water hose when it is wound on the reel. The detachable protective cover prevents the clamping ring from wearing the water faucet, thereby improving the overall service life.

[0020] The present invention is further configured such that the contact surface between the bidirectional threaded rod and the winding drum is smooth, and a damping structure is provided between the winding drum and the vehicle body.

[0021] Preferably, the smooth setting reduces the sliding friction between the two. During the rotation of the residual gear, it will drive the full gear at one end to rotate, and the setting of the damping structure prevents the winding drum from rotating itself, thereby improving the overall rotation stability of the device.

[0022] The present invention is further configured such that the first branch pipe is bent as a whole.

[0023] Preferably, the bent-shaped setting prevents the water in the second branch pipe from flowing back after the subsequent drainage is completed, effectively prevents the water from flowing back into the water pump body, and reduces the erosion of the metal parts on the inner wall of the water pump body.

[0024] A rainwater drainage method for highway construction in rainy season, comprising the following steps: Step 1: Move the vehicle body to the water collection well to be drained by means of the crawler wheels. When the water pump body is in a horizontal state, the residual gear and the full gear are not engaged. At this time, the staff can rotate the reel to release the water hose, so that the water hose falls to the bottom of the water collection well; Step 2: Then start the electric slider on the base, so that the electric slider cooperates with the adjusting rod to make the adjusting plate itself tilted, and during the rotation of the adjusting plate, the residual gear will rotate and mesh with its full gear. At this time, the winding drum is limited and self-locked, and the rotation of the residual gear will drive the full gear to rotate, and cooperate with the threaded rod and the threaded sleeve to make the covering plate on the outer wall of the winding drum shrink, reducing the outer diameter of the winding drum itself, so that the water hose can expand normally during the pumping process; Step 3: After the drainage is completed, the electric slider cooperates with the electric slide to reset. At this time, the rotation of the remaining gear drives the full gear to reverse, so that the covering plate continues to cover the inner wall of the water hose, and the remaining gear releases the self-locking of the reel, allowing the staff to rotate the reel to reel the water hose.

[0025] By adopting the above technical solution, the water hose is prevented from excessive bending during the subsequent drainage process, the subsequent drainage efficiency is guaranteed, and the winding drum is ensured not to rotate due to external vibrations during the drainage process, thereby achieving overall drainage stability.

[0026] In summary, the present invention mainly has the following beneficial effects: 1. The present invention provides a full gear and a residual gear on one side of the take-up drum and the adjustment plate respectively. When the water pump body is in a horizontal state, the residual gear and the full gear are in a staggered state. At this time, the staff rotates the take-up drum to place the water hose into the water collection well at a fixed length. The excess water hose will continue to be reeled on the take-up drum, preventing the water hose from being excessively bent during the subsequent drainage process, thereby ensuring the subsequent drainage efficiency. 2. The present invention uses an electric slider in conjunction with an adjustment rod to enable the adjustment plate to drive the water pump to an inclined state. After subsequent drainage is completed, the excess water in the water pump is discharged into the water tank, effectively reducing the residual water in the water pump body itself. In addition, during the adjustment process, the residual gear will engage with the full gear, and the winding drum will be limited and self-locked by the residual gear, ensuring that the winding drum will not rotate due to external vibrations during the drainage process, thereby achieving overall drainage stability. 3. In the present invention, the residual gear drives the full gear to rotate during the adjustment process. At this time, the full gear causes the bidirectional threaded rod in the take-up drum to rotate. With the cooperation of the threaded sleeve and the support rod, the covering plate on the outer wall of the take-up drum is contracted inward, thereby reducing the outer diameter of the take-up drum itself. At this time, when the water pump body is pumping water, its reduced outer diameter is used for the water hose wound on the outer wall of the take-up drum to expand and drain normally, thereby ensuring the normal drainage work. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A perspective view of the present invention; Figure 2 This is a schematic diagram of the winding drum assembly structure of the present invention; Figure 3 This is a schematic diagram of the first branch pipe structure of the present invention; Figure 4 Schematic diagram of the gear meshing structure of the present invention; Figure 5 For the present invention Figure 4 A magnified view of middle A; Figure 6 It is the front view of the present invention; Figure 7 This is a schematic diagram of the winding drum water and belt structure of the present invention; Figure 8 This is a schematic diagram of the second branch pipe structure of the present invention; Figure 9 It is a cross-sectional view of the winding drum of the present invention; Figure 10 This is a schematic diagram of the lower structure of the inclined body of the adjustment plate of the present invention; Figure 11 For the present invention Figure 9 Enlarged view of middle B; Figure 12 It is a structural schematic diagram of the covering plate adjustment mechanism of the present invention; Figure 13 For the present invention Figure 10 Enlarged view of middle C; Figure 14 This is a schematic diagram of the lower structure of the inclined water pump body of the present invention.

[0028] Description of reference numerals: 1. Vehicle body; 2. Water pump body; 3. Track wheel; 4. Base; 5. Adjustment plate; 6. Winding drum; 7. First branch pipe; 8. Covering plate; 9. Water hose; 10. Snap ring; 11. Water tap; 12. Full gear; 13. Residual gear; 14. Threaded sleeve; 15. Second branch pipe; 16. Water trough; 17. Water outlet; 18. Two-way threaded rod; 19. Support rod; 20. Adjustment rod; 21. Electric slider; 22. Electric slide. DETAILED DESCRIPTION

[0029] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be understood as limiting the present invention.

[0030] The following describes an embodiment of the present invention based on its overall structure.

[0031] First embodiment: See also Figures 1-14 The rainwater drainage equipment and method for highway construction in the rainy season shown in the figure include a vehicle body 1, a water pump body 2, a winding mechanism, an adjustment mechanism and a self-locking mechanism. A crawler wheel 3 is provided at the bottom of the vehicle body 1. Under the action of the crawler wheel 3, in the face of a complex environment, the staff can drive the vehicle body 1 to move to the water collection well, and a winding drum 6 is rotatably provided at the front end of the water pump body 2 on the inner side of the vehicle body 1. A full gear 12 is connected to one side of the winding drum 6, wherein a residual tooth that can mesh with the adjusting plate 5 is connected to one side. Wheel 13, when the water pump body 2 is located on the vehicle body 1 and is in a horizontal state, its residual gear 13 and the full gear 12 are in a non-engaged state. Since an array of water hoses 9 are wrapped around the reel 6, the staff releases the water hose 9 by rotating the reel 6 and makes the water tap 11 at one end enter the bottom of the water collection well. At this time, the reel 6 stops rotating, and its excess water hose 9 will continue to be reeled on the reel 6, preventing the water hose 9 from being excessively bent during the subsequent drainage process, thereby ensuring the subsequent drainage efficiency; The electric slide 22 is provided on the base 4, in which the electric slider 21 is slidably provided in the electric slide 22, and an adjusting rod 20 is hinged on the top of the electric slider 21, and the other end of the adjusting rod 20 is hinged to the adjusting plate 5. Under the action of the electric slide 22, the electric slider 21 is moved to one side. During this process, the adjusting rod 20 on the top of the electric slider 21 will prop up the adjusting plate 5, so that it is located on the base 4 and is tilted, and the water pump body 2 itself is tilted. Since one side of the residual gear 13 is connected to the adjusting plate 5, when the adjusting plate 5 rotates, the residual gear 13 drives the full gear 12 to rotate. At this time, the residual gear 13 is meshed with the full gear 12, and the winding drum 6 is limited and self-locked by the residual gear 13, ensuring that the winding drum 6 will not rotate due to external vibrations during the drainage process, thereby achieving the stability of the overall drainage; At the same time, a two-way threaded rod 18 is connected to one end of the full gear 12. When the residual gear 13 rotates through the adjusting plate 5, its two-way threaded rod 18 will rotate with the full gear 12. Since one end of the two-way threaded rod 18 passes through the winding drum 6, an array of covering plates 8 cooperating with the two-way threaded rod 18 are retractably provided on the outer wall of the winding drum 6. Therefore, when the two-way threaded rod 18 rotates, the covering plate 8 will retract toward the inner side of the winding drum 6, thereby reducing the outer diameter of the winding drum 6 itself. At this time, when the water pump body 2 is pumping water, its reduced outer diameter is used for the water belt 9 wound on the outer wall of the winding drum 6 to expand and drain normally, ensuring the normal drainage work. After the subsequent drainage is completed, the inclined water pump body 2 discharges the excess water source inside into the second branch pipe 15, effectively reducing the residual water source of the water pump body 2 itself.

[0032] In the above embodiment, please refer to Figure 9 A water trough 16 is provided on one side of the second branch pipe 15 in the winding drum 6, and a water outlet 17 is opened in the water trough 16, which is connected to one end of the water hose 9, and the connection between the second branch pipe 15 and the water trough 16, and the water outlet 17 and the water hose 9 are all sealed. Through the cooperation of the water faucet 11 and the water hose 9, the water source in the water collection well will be discharged into the water trough 16 through the water outlet 17, and then discharged from the water pump body 2 under the cooperation of the second branch pipe 15 and the first branch pipe 7. The setting of the water trough 16 itself is convenient for collecting the residual water source in the subsequent water pump to prevent the water source from flowing back through the second branch pipe 15 and the first branch pipe 7.

[0033] In the above embodiment, please refer to Figure 9 and Figure 11 A threaded sleeve 14 is symmetrically slidably provided on the outer wall of the bidirectional threaded rod 18, wherein the outer wall of the threaded sleeve 14 is hinged with an array of support rods 19, and the other end of the support rod 19 is hinged to the covering plate 8. When the bidirectional threaded rod 18 rotates through the full gear 12, it will drive the threaded sleeve 14 to slide inward. During this process, the threaded sleeve 14 pulls the hinged support rod 19, so that one end of the support rod 19 pulls the covering plate 8 inward to shrink, thereby reducing the outer diameter of the winding drum 6 itself.

[0034] In the above embodiment, please refer to Figure 2 and Figure 4A clamping ring 10 that cooperates with the water faucet 11 is provided at the front end of the base 4, and a protective cover is detachably provided on the inner wall of the clamping ring 10. After the subsequent drainage is completed, the water faucet 11 will be limited by the clamping ring 10. When the vehicle body 1 moves, the water faucet 11 shakes with the water hose 9, ensuring the stability of the water hose 9 when it is wound on the winding drum 6, and the detachable protective cover prevents the clamping ring 10 from wearing the water faucet 11, thereby improving the overall service life.

[0035] In the above embodiment, please refer to Figure 9 The contact surface between the bidirectional threaded rod 18 and the winding drum 6 is smooth, and a damping structure is provided between the winding drum 6 and the vehicle body 1. The smooth setting reduces the sliding friction between the two. During the rotation of the residual gear 13, the full gear 12 at one end will be driven to rotate, and the setting of the damping structure prevents the winding drum 6 from rotating itself, thereby improving the overall rotation stability of the device.

[0036] Second embodiment: See also Figure 2 and Figure 8 The rainwater drainage equipment and method shown in the figure are used for highway construction in the rainy season. The overall structure is similar to that of the first embodiment, wherein a second branch pipe 15 is provided on the side of the winding drum 6 away from the full gear 12, and the output end of the water pump body 2 is connected to the first branch pipe 7, one end of the first branch pipe 7 is connected to the second branch pipe 15, and one end of the first branch pipe 7 is rotatably set. During the tilting of the water pump body 2, the first branch pipe 7 itself rotates, effectively preventing bending between the first branch pipe 15, and at the same time, the water source in the water tank is easily discharged into the first branch pipe through the second branch pipe 15, and the second branch pipe 15 and the winding drum 6 are also rotatably set, so that when the staff rotates the winding drum 6, the second branch pipe 15 itself will not be displaced, thereby ensuring the sealing of the overall drainage process.

[0037] The present invention works as follows: when in use, the vehicle body 1 is moved to the designated position of the water collection well by the track wheel 3, and then the staff removes the water tap 11 from the clamping ring 10 and rotates the reel 6 to release the water hose 9. The staff can release water hoses of different lengths according to the actual depth of the water collection well. When the water tap 11 contacts the bottom of the water collection well, the reel 6 stops rotating. At this time, the electric slider 21 drives the adjusting rod 20 to slide to one side, thereby making the water pump body 2 tilted, effectively preventing the water source from flowing back after the subsequent drainage is completed; At the same time, when the water pump body 2 rotates through the adjusting plate 5, the residual gear 13 on one side of the adjusting plate 5 will mesh with the full gear 12 on one side of the take-up drum 6. In this process, the cooperation of the residual gear 13 and the full gear 12 is used to limit and self-lock the take-up drum 6, ensuring that the take-up drum will not rotate due to external vibrations during drainage, and when the full gear 12 rotates through the residual gear 13, it will drive the internal bidirectional threaded rod 18 to rotate. In this process, under the action of the threaded sleeve 14 and the support rod 19, the covering plate 8 on the outer wall of the take-up drum 6 is contracted inward, thereby reducing the outer diameter of the take-up drum 6 itself. At this time, when the water pump body 2 is pumping water, its reduced outer diameter is used for the water hose 9 wound on the outer wall of the take-up drum 6 to expand and drain normally.

[0038] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiment without creative contribution as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A rainwater drainage device for highway construction in rainy season, comprising a vehicle body (1) and a water pump body (2), characterized in that: A base (4) is provided on the inner side of the vehicle body (1), an adjustment plate (5) is rotatably provided on one end of the top of the base (4), a water pump body (2) is mounted on the adjustment plate (5), a reel (6) is rotatably provided on the inner side of the vehicle body (1) at the front end of the water pump body (2), one side of the reel (6) is connected to a full gear (12), wherein one side of the adjustment plate (5) is connected to a residual gear (13) that can mesh with the reel; One end of the full gear (12) is connected to a bidirectional threaded rod (18), one end of which passes through the inside of the reel (6), and the outer wall of the reel (6) is provided with an array of covering plates (8) that cooperate with the bidirectional threaded rod (18) in a retractable manner, and the outer wall of the reel (6) is provided with a water hose (9) in a surrounding manner, and one end of the water hose (9) is connected to a water tap (11).

2. The rainwater drainage equipment for highway construction in rainy season according to claim 1, characterized in that: A second branch pipe (15) is provided on the side of the winding drum (6) away from the full gear (12), and the output end of the water pump body (2) is connected to the first branch pipe (7), one end of the first branch pipe (7) is connected to the second branch pipe (15), and one end of the first branch pipe (7) is rotatably arranged, and at the same time, one end of the second branch pipe (15) and the winding drum (6) are also rotatably arranged.

3. The rainwater drainage equipment for highway construction in rainy season according to claim 2, characterized in that: A water trough (16) is provided on one side of the second branch pipe (15) in the reel (6), and a water outlet (17) is provided in the water trough (16). The water outlet (17) is connected to one end of the water belt (9), and the connection between the second branch pipe (15) and the water trough (16), and the water outlet (17) and the water belt (9) are all sealed.

4. The rainwater drainage equipment for highway construction in rainy season according to claim 1, characterized in that: An electric slide (22) is provided on the base (4), wherein an electric slider (21) is slidably provided in the electric slide (22), an adjustment rod (20) is hingedly connected to the top of the electric slider (21), and the other end of the adjustment rod (20) is hingedly connected to the adjustment plate (5).

5. The rainwater drainage equipment for highway construction in rainy season according to claim 1, characterized in that: The outer wall of the bidirectional threaded rod (18) is provided with a threaded sleeve (14) symmetrically slidably provided, wherein the outer wall of the threaded sleeve (14) is hingedly connected to an array of support rods (19), and the other end of the support rod (19) is hingedly connected to the covering plate (8).

6. The rainwater drainage equipment for highway construction in rainy season according to claim 1, characterized in that: Track wheels (3) are provided at the bottom of the vehicle body (1).

7. The rainwater drainage equipment for highway construction in rainy season according to claim 1, characterized in that: The front end of the base (4) is provided with a clamping ring (10) that cooperates with the faucet (11), and the inner wall of the clamping ring (10) is detachably provided with a protective cover.

8. The rainwater drainage equipment for highway construction in rainy season according to claim 1, characterized in that: The contact surface between the bidirectional threaded rod (18) and the winding drum (6) is arranged in a smooth shape, and a damping structure is provided between the winding drum (6) and the vehicle body (1).

9. The rainwater drainage equipment for highway construction in rainy season according to claim 2, characterized in that: The first branch pipe (7) is bent as a whole.

10. A method for draining rainwater for highway construction in rainy season, characterized by: The following steps are involved: Step 1: Move the vehicle body to the water collection well to be drained by means of the crawler wheels. When the water pump body is in a horizontal state, the residual gear and the full gear are not engaged. At this time, the staff can rotate the reel to release the water hose, so that the water hose falls to the bottom of the water collection well; Step 2: Then start the electric slider on the base, so that the electric slider cooperates with the adjusting rod to make the adjusting plate itself tilted, and during the rotation of the adjusting plate, the residual gear will rotate and mesh with its full gear. At this time, the winding drum is limited and self-locked, and the rotation of the residual gear will drive the full gear to rotate, and cooperate with the threaded rod and the threaded sleeve to make the covering plate on the outer wall of the winding drum shrink, reducing the outer diameter of the winding drum itself, so that the water hose can expand normally during the pumping process; Step 3: After the drainage is completed, the electric slider cooperates with the electric slide to reset. At this time, the rotation of the remaining gear drives the full gear to reverse, so that the covering plate continues to cover the inner wall of the water hose, and the remaining gear releases the self-locking of the reel, allowing the staff to rotate the reel to reel the water hose.

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