CN113023617B - Water conservancy environmental protection decontamination system - Google Patents

Water conservancy environmental protection decontamination system Download PDF

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Publication number
CN113023617B
CN113023617B CN202110240039.0A CN202110240039A CN113023617B CN 113023617 B CN113023617 B CN 113023617B CN 202110240039 A CN202110240039 A CN 202110240039A CN 113023617 B CN113023617 B CN 113023617B
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lifting platform
limiting
fixed
platform
water conservancy
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CN113023617A (en
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胡旻
胡军庆
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Anhui Tongfang Engineering Consulting Co ltd
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Anhui Tongfang Engineering Consulting Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/02Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms suspended from ropes, cables, or chains or screws and movable along pillars
    • B66F7/025Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms suspended from ropes, cables, or chains or screws and movable along pillars screw operated
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/28Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F5/00Dredgers or soil-shifting machines for special purposes
    • E02F5/28Dredgers or soil-shifting machines for special purposes for cleaning watercourses or other ways

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transmission Devices (AREA)

Abstract

The application relates to a water conservancy environment-friendly decontamination system, which comprises a hoisting platform and a lifting platform arranged below the hoisting platform in a sliding manner, wherein a lead screw is rotatably arranged at the bottom of the hoisting platform, an internal threaded pipe is rotatably arranged in the lifting platform, and the internal threaded pipe is in threaded connection with the lead screw; the bottom of the lifting platform is provided with a dredging mechanism which is used for being abutted against the bottom of the river channel; a fixed rod is connected below the lifting platform in a sliding manner along the vertical direction, an abutting part is fixed at the top of the fixed rod, a limiting part is connected in the lifting platform in a sliding manner and is used for being inserted with the outer peripheral surface of the internal threaded pipe; a pressing component is arranged between the abutting component and the limiting component. The river course bottom contact effect has the effect that the descending process of the lifting platform can be conveniently fed back in time to contact with the river course bottom.

Description

Water conservancy environmental protection decontamination system
Technical Field
The application relates to the field of water conservancy decontamination, especially relates to a water conservancy environmental protection decontamination system.
Background
At present, in an irrigation canal system, due to human or natural factors, a large amount of dead branches and fallen leaves, animal carcasses, waste clothes, silt and other sundries are always generated, and long-term accumulation can influence irrigation water.
In the related technology, reference is made to the Chinese utility model with the publication number of CN209798869U, which discloses a gate decontamination device, comprising a lifting mechanism and a decontamination mechanism; the hoisting mechanism comprises a hoisting platform, and a winch for lifting is arranged on the upper end surface of the hoisting platform; the steel wire is controlled by the winch to drive the decontamination mechanism to move up and down, so that the synchronous movement of the decontamination mechanism is realized; and the telescopic rod is used for controlling the arc decontamination grid and the inclined decontamination grid to be opened and closed so as to finish decontamination of the bottom of the gate.
Aiming at the related technologies, the inventor thinks that the defect that the line of the winch is too long due to the fact that the river depth cannot be measured in advance and cannot be fed back after the lifting platform descends and touches the bottom is caused.
Disclosure of Invention
In order to improve the problem that the descending in-process of lift platform can not in time feed back and river course bottom contact, this application provides a water conservancy environmental protection decontamination system.
The application provides a water conservancy environmental protection decontamination system adopts following technical scheme:
a water conservancy environment-friendly decontamination system comprises a lifting platform and a lifting platform arranged below the lifting platform in a sliding manner, wherein a lead screw is rotatably arranged at the bottom of the lifting platform, an internal threaded pipe is rotatably arranged in the lifting platform, and the internal threaded pipe is in threaded connection with the lead screw; the bottom of the lifting platform is provided with a dredging mechanism which is used for being abutted against the bottom of a river channel; a fixed rod is connected below the lifting platform in a sliding mode along the vertical direction, an abutting part is fixed at the top of the fixed rod, a limiting part is connected in the lifting platform in a sliding mode and is used for being inserted with the outer peripheral surface of the internal threaded pipe; and a pressing component used for separating the internal threaded pipe from the limiting component is arranged between the abutting component and the limiting component.
Through adopting above-mentioned technical scheme, when locating part and internal thread pipe peg graft, rotate the lead screw, the lead screw can drive internal thread pipe downstream to in falling into the river course with lift platform. When the fixed rod moves upwards, the abutting part abuts against the limiting part and pushes the limiting part to be separated from the internal threaded pipe, so that the lifting platform stops moving; the probability that the motor can still continuously output is reduced because the dredging mechanism cannot feed back to the motor after contacting with the bottom of the river channel.
Optionally, a motor is fixed on the top of the lifting platform, and an output end of the motor is fixedly connected with a lead screw; the top of the lifting platform is provided with a connecting groove, and the lifting platform is rotatably connected with the internal threaded pipe through the connecting groove.
Through adopting above-mentioned technical scheme, the motor provides power for lift platform's removal, and the lift platform of being convenient for lasts to descend or continuously rises to be convenient for fall into or rise in the river course with lift platform.
Optionally, a first sliding groove is formed on the periphery of the connecting groove, and the lifting platform is connected with the limiting piece in a sliding manner through the first sliding groove; the bottom of the first sliding groove is provided with a second sliding groove, and the abutting part is connected with the lifting platform in a sliding mode through the second sliding groove; and one end of the limiting part, which is far away from the internal thread pipe, is fixedly provided with a second spring, and one end of the second spring, which is far away from the limiting part, is fixedly connected with the lifting platform through a first sliding groove.
Through adopting above-mentioned technical scheme, when butt piece and locating part butt, locating part and internal thread pipe separation, the second spring is in compression state this moment, and the second spring can exert the elasticity to being close to one side of the internal thread pipe for the butt piece, is convenient for reset to being close to one side of the internal thread pipe through second spring drive butt piece.
Optionally, the abutting component includes two inclined planes respectively disposed on opposite inner sides of the abutting component and the limiting component.
Through adopting above-mentioned technical scheme, the butt piece supports through the inclined plane and presses the locating part to drive locating part and internal thread pipe separation reduce desilting mechanism and river course bottom contact back, lift platform is the possibility of constantly declining still.
Optionally, the dredging mechanism comprises a straight grid fixed at the bottom of the fixing rod and a connecting rod rotatably connected with one side of the lifting platform, and the connecting rod is fixedly connected with an arc-shaped grid plate; a rotating assembly used for driving the arc-shaped grid plate to rotate is arranged between the lifting platform and the arc-shaped grid plate.
Through adopting above-mentioned technical scheme, the arc grid tray rotates the in-process to being close to straight shape bars one side, can snatch the mud of river course bottom, and mud can finally stay in arc grid tray and the straight shape bars after the closure to rise the surface of water with mud through lift platform, thereby accomplish the desilting operation.
Optionally, the rotating assembly includes a conical ring fixed on the outer peripheral surface of the internal threaded pipe, an installation groove is formed around the connection groove, and the conical ring is rotatably connected with the lifting platform through the installation groove; the side wall of the mounting groove is rotatably provided with a bevel gear, and the bevel gear is used for being meshed with a bevel gear ring; and the bevel gear is fixedly connected with a rotating shaft.
Through adopting above-mentioned technical scheme, can drive the bevel gear ring after the internal thread pipe rotates and rotate, the bevel gear ring moves bevel gear and rotates, through setting up bevel gear ring and bevel gear, the internal thread pipe of being convenient for loses behind the limiting displacement, can drive arc grid tray and rotate to the completion is to the excavation of river course bottom mud.
Optionally, a connecting shaft is fixed to the top of the fixing rod, a circular through hole is formed in the top of the fixing rod, and the connecting shaft is connected with the fixing rod through the circular through hole in a sliding mode along the vertical direction.
Through adopting above-mentioned technical scheme, the connecting axle provides the guide effect for the dead lever through circular through-hole, reduces the dead lever along the vertical removal in-process possibility of deviating from the track.
Optionally, a limiting wafer is fixed at the bottom end of the connecting shaft, a first spring is fixed at the top of the limiting wafer, and the top end of the first spring is fixedly connected with the bottom of the fixing rod.
Through adopting above-mentioned technical scheme, when straight shape bars receive the holding power effect rebound of river bottom, first spring is in the extending condition, and first spring provides decurrent elasticity for the dead lever, is convenient for reset downwards through straight shape bars of first spring drive.
In summary, the present application includes at least one of the following beneficial technical effects:
1. when locating part and internal thread pipe peg graft, rotate the lead screw, the lead screw can drive the internal thread pipe downstream to in falling into the river course with lift platform. When the fixed rod moves upwards, the abutting part abuts against the limiting part and pushes the limiting part to be separated from the internal threaded pipe, so that the lifting platform stops moving; the possibility that the motor can not feed back to the motor after the dredging mechanism is contacted with the bottom of the river channel is reduced, so that the motor can still continuously output;
2. when the abutting part abuts against the limiting part, the limiting part is separated from the internal threaded pipe, the second spring is in a compressed state at the moment, the second spring can apply elastic force to one side close to the internal threaded pipe to the abutting part, and the abutting part is driven to reset to one side close to the internal threaded pipe through the second spring;
3. the abutting part abuts against the limiting part through the inclined surface and drives the limiting part to be separated from the internal threaded pipe, and the possibility that the lifting platform is still continuously lowered after the dredging mechanism is contacted with the bottom of the river channel is reduced.
Drawings
FIG. 1 is a schematic structural diagram of a water conservancy environmental protection decontamination system according to an embodiment of the application.
Fig. 2 is a sectional view taken along line a-a of fig. 1.
Fig. 3 is an enlarged schematic view at B in fig. 2.
Fig. 4 is an enlarged schematic view at C in fig. 2.
Fig. 5 is an enlarged schematic view at D in fig. 2.
Description of reference numerals: 1. hoisting the platform; 11. a motor; 12. a lead screw; 13. a connecting shaft; 14. a circular through hole; 15. limiting the wafer; 2. a lifting platform; 21. connecting grooves; 22. a first spring; 23. a tapered portion; 24. fixing the rod; 25. a straight grid plate; 3. an internally threaded tube; 31. a conical gear ring; 32. mounting grooves; 33. a rotating shaft; 34. a bevel gear; 35. a connecting rod; 36. an arc-shaped grid plate; 37. arc-shaped grid bars; 4. a limiting mechanism; 41. a limiting member; 42. an abutting member; 43. a first chute; 44. a second chute; 45. a bevel; 46. a second spring.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
The embodiment of the application discloses water conservancy environmental protection decontamination system. Referring to fig. 1, the water conservancy environmental protection decontamination system comprises a lifting platform 1 and two motors 11 fixed on the top of the lifting platform 1. The bottom end of the output end of the motor 11 penetrates through the hoisting platform 1 and is fixed with a screw rod 12. Motor 11 powers the rotation of lead screw 12.
Referring to fig. 2 and 3, a lifting platform 2 is connected below the lifting platform 1 in a sliding manner along the vertical direction; usually, the lifting platform 1 is fixedly connected with the ship body, and the motor 11 drives the lifting platform 2 to enter the river surface so as to clean the sludge at the bottom of the river channel. The top of the lifting platform 2 is provided with two connecting grooves 21, and the lifting platform 2 is rotatably provided with an internal threaded pipe 3 through the connecting grooves 21; the internal threaded pipe 3 is used for being in threaded connection with a lead screw 12; two ball bearings are fixedly embedded in the inner peripheral surface of the connecting groove 21, and the inner peripheral surfaces of the ball bearings are fixedly connected with the outer peripheral surface of the internally threaded pipe 3. The ball bearing reduces friction with the connecting groove 21 for the screw shaft 12. After the screw 12 rotates, the internal threaded pipe 3 meshed with the screw 12 moves downwards, so that the lifting platform 2 is driven to move downwards; the lifting platform 2 moves into the water body to clean sludge at the bottom of the river channel. A fixed rod 24 is connected below the lifting platform 2 along the vertical direction in a sliding manner, and a straight grid 25 is fixed at the bottom of the fixed rod 24; the bottom of the straight grid 25 is fixed with a conical part 23. The straight grid 25 is used for abutting against the bottom surface of the river channel; straight bars 25 insert the river course bottom through toper portion 23 to fixing lift platform 2, receiving the holding power that the river course bottom provided when being convenient for lift platform 2 clearance mud.
Referring to fig. 2 and 4, two connecting shafts 13 are fixed at the top of the fixing rod 24, two circular through holes 14 are formed at the top of the fixing rod 24, and the connecting shafts 13 are connected with the fixing rod 24 through the circular through holes 14 in a sliding manner in the vertical direction; the connecting shaft 13 provides a guiding function for the fixing rod 24, and reduces the possibility of the fixing rod 24 deviating from the track in the vertical moving process. The bottom end of the connecting shaft 13 is fixed with a limiting wafer 15, the top of the limiting wafer 15 is fixed with a first spring 22, the first spring 22 is sleeved on the periphery of the connecting shaft 13, and the top end of the first spring 22 is fixedly connected with the bottom of the fixing rod 24. After the straight grid 25 is abutted against the bottom of the river channel, the fixing rod 24 is forced to move upwards; the first spring 22 is in a stretched state, and the first spring 22 provides a downward elastic force to the fixing rod 24, so that the fixing rod 24 is driven by the first spring 22 to return downward.
Referring to fig. 2 and 5, a stopper mechanism 4 for stopping the rotation of the internally threaded tube 3 is provided between the internally threaded tube 3 and the fixing lever 24. The limiting mechanism 4 includes two limiting members 41 slidably connected to the lifting platform 2 along the length direction of the lifting platform 2 and two abutting members 42 fixed to the top of the fixing rod 24. Two first sliding grooves 43 are formed in the peripheral side of the connecting groove 21, and the lifting platform 2 is connected with the limiting piece 41 in a sliding manner through the first sliding grooves 43; the peripheral surface of the internal thread tube 3 is provided with a slot for inserting the limiting piece 41; the limiting piece 41 is used for being inserted with the outer peripheral surface of the internal thread pipe 3; through locating part 41 and internal thread pipe 3 grafting, prevent internal thread pipe 3 and rotate to make internal thread pipe 3 and lead screw 12 threaded connection in-process, only can remove along vertical, thereby drive dead lever 24 downstream. The bottom of the first sliding chute 43 is provided with a second sliding chute 44, and the abutting part 42 is connected with the lifting platform 2 in a sliding manner through the second sliding chute 44; the opposite inner sides of the abutting member 42 and the limiting member 41 are respectively provided with an inclined surface 45. The abutting member 42 abuts against the limiting member 41 through the inclined surface 45, and pushes the limiting member 41 to move towards the side far away from the screw rod 12, so that the limiting member 41 is separated from the internal threaded tube 3; the internal thread tube 3 can rotate along with the screw rod 12 after losing the limiting function of the limiting piece 41; the ball bearing reduces the friction force when the internal thread tube 3 rotates, and reduces the possibility that the screw 12 slides with the internal thread tube 3. A second spring 46 is fixed at one end of the limiting member 41 far from the internal threaded tube 3, and one end of the second spring 46 far from the limiting member 41 is fixedly connected with the lifting platform 2 through the first sliding chute 43. The second spring 46 applies an elastic force to the stopper 41 toward the side close to the internally threaded tube 3, so that the stopper 41 is driven by the second spring 46 to return toward the side close to the internally threaded tube 3.
Referring to fig. 2 and 3, a bevel gear ring 31 is fixed on the outer peripheral surface of the internal threaded pipe 3, an installation groove 32 is formed on the peripheral side of the connection groove 21, and the bevel gear ring 31 is rotatably connected with the lifting platform 2 through the installation groove 32. The side wall of the mounting groove 32 is rotatably provided with a bevel gear 34, and the bevel gear 34 is used for being meshed with the bevel gear ring 31. After the internal threaded pipe 3 loses the limiting function of the limiting part 41, the internal threaded pipe 3 can rotate along with the screw rod 12, and the internal threaded pipe 3 simultaneously drives the bevel gear ring 31 to rotate. The opposite outer sides of the two bevel gears 34 are respectively fixed with a rotating shaft 33, one end of the rotating shaft 33 far away from the bevel gears 34 is fixed with a connecting rod 35, and the opposite inner sides of the two connecting rods 35 are fixed with arc-shaped grid plates 36; the arc grid plate 36 comprises a plurality of arc grid bars 37 which are arranged in sequence and are connected in sequence. During the rotation of the bevel gear ring 31, the bevel gear 34 is driven to rotate by meshing with the bevel gear 34; the bevel gear 34 drives the arc grid plate 36 to rotate through the connecting rod 35; in the initial state, the included angle between the arc grid plate 36 and the straight grid 25 is 90 degrees; the arc grid plate 36 is driven by the connecting rod 35 to rotate 90 degrees, and the bottom of the arc grid plate 36 can scrape sludge at the bottom of the river channel in the contact process with the bottom of the river channel, so that part of the sludge is taken away. After the arc-shaped grid plate 36 is rotated, the sludge stays between the arc-shaped grid plate 36 and the straight grid 25. The sludge can be taken away by pulling the lifting platform 1.
The implementation principle of a water conservancy environmental protection decontamination system of the embodiment of the application is as follows:
before sludge is cleaned, cleaning and chiseling sludge at the bottom of a river channel through a sludge digger, and loosening the soil; and then cleaning the sludge subjected to chiseling through the water conservancy environment-friendly decontamination system in the embodiment of the application. In the process of cleaning sludge, after the motor 11 is started, the motor 11 drives the screw 12 to rotate, and the screw 12 drives the lifting platform 2 to move downwards through the threaded fit with the internal threaded pipe 3.
In the descending process of the lifting platform 2, the straight grid 25 is in contact with the bottom of the river channel, and the conical part 23 of the straight grid 25 is inserted into the bottom of the river channel, so that the lifting platform 2 is fixed. The straight grid 25 is pressed upwards by the upwards pressing action, the abutting piece 42 abuts against the limiting piece 41 through the inclined surface 45 in the moving process, and the limiting piece 41 is pushed to move towards one side far away from the internal thread pipe 3, so that the limiting piece 41 is separated from the internal thread pipe 3, and the internal thread pipe 3 losing the limiting action does not move vertically any more. The elevating platform 2 stops moving.
The internal thread pipe 3 rotates along with the screw rod 12 after losing the limiting function, and simultaneously drives the conical ring to rotate. The conical ring is meshed with the bevel gear 34 to drive the connecting rod 35 to rotate, the connecting rod 35 drives the arc-shaped grid plate 36 to rotate downwards in the rotating process, and the arc-shaped grid plate 36 scrapes sludge at the bottom of a river channel in the rotating process, so that the sludge is finally kept between the arc-shaped grid plate 36 and the straight grid 25.
Lifting the lifting platform 2 upwards while rotating the motor 11 in the reverse direction; the abutting piece 42 is separated from the limiting piece 41, and the limiting piece 41 is inserted into the outer peripheral surface of the internal thread tube 3, so that the limiting piece 41 can limit the internal thread tube 3 again. The screw rod 12 is in threaded fit with the internal threaded pipe 3 in the process of reverse rotation and drives the lifting platform 2 to move upwards.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (6)

1. The utility model provides a water conservancy environmental protection decontamination system, sets up in lift platform (2) of lift platform (1) below including lifting by crane platform (1) and sliding, its characterized in that: a screw rod (12) is rotatably mounted at the bottom of the lifting platform (1), an internal threaded pipe (3) is rotatably mounted in the lifting platform (2), and the internal threaded pipe (3) is in threaded connection with the screw rod (12); the bottom of the lifting platform (2) is provided with a dredging mechanism for grabbing sludge; a fixed rod (24) is connected to the lower portion of the lifting platform (2) in a sliding mode along the vertical direction, an abutting part (42) is fixed to the top of the fixed rod (24), a limiting part (41) is connected to the inner portion of the lifting platform (2) in a sliding mode, and the limiting part (41) is used for being inserted into the outer peripheral face of the internal threaded pipe (3); a pressing component is arranged between the abutting part (42) and the limiting part (41); the abutting component comprises two inclined planes (45) which are respectively arranged on the opposite inner sides of the abutting part (42) and the limiting part (41); the dredging mechanism comprises a straight grid (25) fixed at the bottom of the fixed rod (24) and a connecting rod (35) rotatably connected with one side of the lifting platform (2), and the connecting rod (35) is fixedly connected with an arc grid plate (36); a rotating assembly for driving the arc-shaped grid plate (36) to rotate is arranged between the lifting platform (2) and the arc-shaped grid plate (36); after straight shape bars (25) contact river course bottom, straight shape bars (25) receive ascending effect rebound that supports, remove in-process butt joint spare (42) and support through inclined plane (45) and press locating part (41) to promote locating part (41) to moving far away from internal thread pipe (3) one side, thereby make locating part (41) and internal thread pipe (3) separation, lose limiting effect's internal thread pipe (3) no longer along vertical migration.
2. The water conservancy environmental protection decontamination system of claim 1, characterized in that: a motor (11) is fixed at the top of the lifting platform (1), and the output end of the motor (11) is fixedly connected with a screw rod (12); connecting groove (21) have been seted up at lift platform (2) top, lift platform (2) are connected with internal thread pipe (3) rotation through connecting groove (21).
3. The water conservancy environmental protection decontamination system of claim 2, characterized in that: a first sliding groove (43) is formed in the peripheral side of the connecting groove (21), and the lifting platform (2) is connected with the limiting piece (41) in a sliding mode through the first sliding groove (43); a second sliding groove (44) is formed in the bottom of the first sliding groove (43), and the abutting part (42) is connected with the lifting platform (2) in a sliding mode through the second sliding groove (44); one end, far away from the internal thread pipe (3), of the limiting piece (41) is fixedly provided with a second spring (46), and one end, far away from the limiting piece (41), of the second spring (46) is fixedly connected with the lifting platform (2) through a first sliding groove (43).
4. The water conservancy environmental protection decontamination system of claim 1, characterized in that: the rotating assembly comprises a bevel gear ring (31) fixed on the outer peripheral surface of the internal threaded pipe (3) and an installation groove (32) formed in the peripheral side of the connection groove (21), and the bevel gear ring (31) is rotatably connected with the lifting platform (2) through the installation groove (32); the side wall of the mounting groove (32) is rotatably provided with a bevel gear (34), and the bevel gear (34) is used for being meshed with the bevel gear ring (31); the bevel gear (34) is fixedly connected with a rotating shaft (33).
5. The water conservancy environmental protection decontamination system of claim 1, characterized in that: the top of the fixing rod (24) is fixed with a connecting shaft (13), the top of the fixing rod (24) is provided with a circular through hole (14), and the connecting shaft (13) is connected with the fixing rod (24) in a sliding mode along the vertical direction through the circular through hole (14).
6. The water conservancy environmental protection decontamination system of claim 5, characterized in that: the bottom end of the connecting shaft (13) is fixed with a limiting wafer (15), the top of the limiting wafer (15) is fixed with a first spring (22), and the top end of the first spring (22) is fixedly connected with the bottom of the fixing rod (24).
CN202110240039.0A 2021-03-04 2021-03-04 Water conservancy environmental protection decontamination system Active CN113023617B (en)

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CN114353516A (en) * 2022-01-13 2022-04-15 深圳东忠窑炉有限公司 Novel roller kiln
CN114503811A (en) * 2022-03-24 2022-05-17 合肥市紫蓬园林工程有限公司 Pit excavation equipment for landscaping

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JPH05149073A (en) * 1991-11-27 1993-06-15 Mitsubishi Heavy Ind Ltd Underground excavator
CN108867738A (en) * 2018-06-29 2018-11-23 钟敏威 A kind of irrigation and water conservancy removes mud equipment with irrigation ditch
CN108951742A (en) * 2018-07-23 2018-12-07 谭沛卿 A kind of irrigation ditch sludge cleaning equipment
CN110789953A (en) * 2019-11-11 2020-02-14 刘功利 Automatic equipment for loading and unloading goods in railway transportation

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