Hydraulic engineering gate driving device

Abstract

The invention provides a hydraulic engineering gate driving device. The hydraulic engineering gate driving device comprises a shell and a threaded rod fixedly connected with the top of a gate. The driving mechanism is used for driving the threaded rod to move up and down, and the driving mechanism is mounted on the shell; the rotating cover is connected with the driving mechanism, and the rotating cover is arranged on the threaded rod in a sleeving mode; the gas injection mechanism is connected with the top end of the threaded rod, and the gas outlet end of the gas injection mechanism is connected with a first annular cavity formed in the rotating cover; a plurality of air nozzles which face the threaded rod and are distributed in an annular array mode are arranged on the periphery of the inner ring of the first annular cavity. The oil outlet end of the oil injection mechanism is connected with a second annular cavity formed in the rotary cover; a plurality of smearing mechanisms distributed in an annular array mode are arranged on the periphery of the inner ring of the second annular cavity, and the smearing mechanisms abut against the threaded rod. Before the threaded rod enters the nut, the rotary cover drives the air nozzle and the smearing mechanism to move around the circumferential surface of the threaded rod, and uniform cleaning and lubricating treatment is provided for the threaded rod.

Description

Technical Field

[0001] The invention relates to the field of water conservancy engineering gates, and in particular to a water conservancy engineering gate driving device. Background Art

[0002] In water conservancy projects, gates are a vital piece of equipment; their opening and closing are driven by gate drive devices, which move the gates up and down.

[0003] At present, the existing gate drive device realizes the lifting and moving of the gate through the threaded transmission between the screw and the nut, wherein the screw is always located in the external environment, and is very easy to be attached with dirt, dust or foreign objects, especially in areas with strong winds and sand. If it is not cleaned, the dirty part of the screw will enter the nut, which will increase the wear and tear, cause damage, and affect the service life; furthermore, the threaded transmission between the screw and the nut lacks lubrication design, and the lack of lubrication will also increase the wear of the transmission. Summary of the invention

[0004] The present invention provides a hydraulic engineering gate driving device to solve the technical problem that the screw rod is dirty and transmits power to the nut, which increases the wear of both.

[0005] The present invention solves the above technical problems through the following technical solutions:

[0006] The present invention provides a water conservancy project gate driving device, including a shell and a threaded rod fixed to the top of the gate; further comprising: a driving mechanism, the driving mechanism is used to drive the threaded rod to move up and down, and the driving mechanism is installed on the shell; a rotating cover, the rotating cover is connected to the driving mechanism, and the rotating cover is sleeved on the threaded rod; an air injection mechanism, the air injection mechanism is connected to the top of the threaded rod, and the air outlet end of the air injection mechanism is connected to a first annular cavity arranged in the rotating cover; a plurality of air nozzles facing the threaded rod and distributed in an annular array are arranged around the inner circle of the first annular cavity; an oil injection mechanism, the oil outlet end of the oil injection mechanism is connected to a second annular cavity arranged in the rotating cover; a plurality of smearing mechanisms distributed in an annular array are arranged around the inner circle of the second annular cavity, and the smearing mechanism abuts against the threaded rod.

[0007] In this technical solution, before the threaded rod enters the nut, the rotating cover drives the air nozzle and the coating mechanism to move around the circumference of the threaded rod, thereby providing uniform cleaning and lubrication for the threaded rod.

[0008] Preferably, the driving mechanism comprises a nut and a rotation driving part, the nut is rotatably installed in the housing, and the nut is connected to the rotation driving part.

[0009] In the technical solution, the driving mechanism rotates the driving nut and cooperates with the vertical guidance of the gate and the external installation position, so that the threaded rod drives the gate to move vertically.

[0010] Preferably, the rotating cover includes a fixed shell and a rotating shell; the top of the fixed shell is fixedly connected to the bottom surface of the shell, the bottom end of the nut extends to the outside of the bottom of the shell, and the bottom end surface of the nut is fixedly connected to the top of the rotating shell, and a cavity is formed between the inner wall of the fixed shell and the outer wall of the rotating shell, and three groups of isolation parts are arranged in the cavity, and the cavity is divided into a first annular cavity and a second annular cavity by the three groups of isolation parts.

[0011] In the technical solution, the rotating shell is connected to the nut and can rotate together with the nut, thereby driving the air nozzle and the coating mechanism to perform circular motion around the threaded rod.

[0012] Preferably, the isolation part includes a first annular seat and a second annular seat; the outer ring of the first annular seat is fixedly connected to the inner wall of the fixed shell, the inner ring of the second annular seat is fixedly connected to the outer wall of the rotating shell, a sealing gasket is filled between the first annular seat and the second annular seat, and the sealing gasket is fixedly connected to the first annular seat.

[0013] In the present technical solution, the isolating part is used to separate and form a first annular cavity and a second annular cavity. The first annular cavity is used to connect a plurality of air nozzles with the air injection mechanism, and the second annular cavity is used to connect a plurality of coating mechanisms with the oil injection mechanism.

[0014] Preferably, the gas injection mechanism includes a straight cylinder; the bottom end of the straight cylinder is fixedly connected to the top surface of the shell, a top cover is fixedly installed on the top of the straight cylinder, a first piston is cooperatively installed in the straight cylinder, the bottom of the first piston is fixedly connected to the top of the threaded rod, a first one-way valve and a second one-way valve are fixedly installed on the top cover, and the bottom end of the first one-way valve and the bottom end of the second one-way valve are both connected to the top of the straight cylinder, the first one-way valve is connected to an air outlet pipe, and the air outlet pipe is connected to the first annular cavity.

[0015] In the present technical solution, the gas injection mechanism is used to inject gas flow into the first annular cavity. At the same time, when the gas injection mechanism moves upward through the threaded rod, it drives the first piston to move upward to generate compressed gas flow.

[0016] Preferably, the oil injection mechanism includes a fixed cylinder; the fixed cylinder is fixedly installed to the top of the first piston, and the second piston is installed in the fixed cylinder, a pressure strip is fixedly connected to one side of the second piston, a return spring is installed between one side of the second piston and the inner wall of the fixed cylinder, and an oil chamber is formed between the side of the second piston away from the pressure strip and the inner wall of the fixed cylinder, the oil chamber is connected to the third one-way valve and the fourth one-way valve, the third one-way valve is connected to the first oil pipe, the top end of the first oil pipe is connected to the second oil pipe, and the second oil pipe is connected to the second annular chamber.

[0017] In the present technical solution, the oil injection mechanism is used to inject lubricating oil into the second annular cavity.

[0018] Preferably, one end of the pressure strip is abutted against an extrusion strip, the extrusion strip is vertically arranged in the straight cylinder, and the top end of the extrusion strip is fixedly connected to the top cover, and the extrusion strip is provided with a plurality of protrusions and a plurality of recessed portions, and the plurality of protrusions and the plurality of recessed portions are alternately distributed in the length direction of the extrusion strip.

[0019] In the present technical solution, the alternatingly distributed raised portions and recessed portions provide the end face of the pressure strip with a walking surface that continuously undulates left and right. When the threaded rod moves vertically, the elastic force of the return spring causes the second piston in the oil injection mechanism to move back and forth left and right, thereby transporting oil into the second annular cavity, so that the drive of the oil injection mechanism is provided by the vertical movement of the threaded rod.

[0020] Preferably, a long hole is opened in the middle of the first piston, the long hole passes through the axis of the threaded rod, an oil storage box is arranged in the long hole, a straw is arranged in the oil storage box, and the top end of the straw is connected to the fourth one-way valve.

[0021] In the technical solution, during the upward movement of the threaded rod, the long hole provides a storage space for the extrusion strip, and at the same time, the long hole provides an installation position for the oil storage box.

[0022] Preferably, the smearing mechanism comprises an elastic telescopic tube in a compressed state, one end of the elastic telescopic tube is connected to an arc-shaped shell, a smearing brush is provided on the arc-shaped shell, and the smearing brush is in contact with the circumferential surface of the threaded rod; a plurality of evenly distributed fine holes are provided on the surface of the arc-shaped shell on which the smearing brush is provided.

[0023] In the technical solution, the lubricating oil is transported through the elastic telescopic tube and the arc-shaped shell, and the lubricating oil is evenly transported into the smear brush through the fine holes, and the oil is applied by the smear brush.

[0024] Preferably, the elastic telescopic tube includes an outer tube body; the outer tube body is connected to the second annular cavity, and a third piston is cooperatively connected to the outer tube body. A middle hole is opened in the middle of the third piston, and the middle hole is fixedly connected to one end of the inner tube body. The end of the inner tube body away from the third piston is connected to the arc shell, and one side of the third piston is elastically connected to one end of the outer tube body through a compression spring.

[0025] In this technical solution, the elastic telescopic tube ensures the contact and fit effect between the smear brush and the threaded rod through compression elastic force.

[0026] On the basis of being in accordance with the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present invention.

[0027] The positive and progressive effects of the present invention are:

[0028] The above-mentioned hydraulic engineering gate driving device adopts the design that the rotating cover can rotate by itself, and a plurality of air nozzles and smearing mechanisms distributed in a ring array are arranged on the rotating cover. In the process that the driving mechanism drives the threaded rod to move upward, the driving mechanism also drives the rotating cover to rotate by itself, so that the air nozzles and the smearing mechanism perform circular motion around the threaded rod. Before the threaded rod enters the nut, all positions on the circumference of the threaded rod can be cleaned and lubricated without dead angles. At the same time, a bottom blade is arranged at the bottom of the rotating cover. Before the air nozzle cleans the threaded rod, part of the dirt on the threaded rod can be scraped off by the bottom blade, which is convenient for the subsequent cleaning of the air nozzle and ensures the cleaning effect. Furthermore, a compression spring is arranged in the smearing mechanism. The compression deformation provides pressure for the coating mechanism to press against the circumference of the threaded rod, thereby ensuring the contact effect between the coating mechanism and the threaded rod and facilitating the coating of the oil. Furthermore, the air injection mechanism is connected to the top end of the threaded rod, and the air injection mechanism provides thrust through the upward movement of the threaded rod to generate an airflow for cleaning. At the same time, when the oil injection mechanism moves vertically through the threaded rod, the pressure bar moves on the extrusion bar, and cooperates with the return spring therein to provide drive to inject lubricating oil into the coating mechanism. Through the above design, both the air injection mechanism and the oil injection mechanism are driven by the vertical movement of the threaded rod, so that after the threaded rod is driven, air and oil are automatically injected, and there is no need to set up additional power sources and control structures for the oil injection mechanism and the air injection mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0030] Figure 2 It is a schematic diagram of the structure inside the shell and the bottom end of the straight tube of the present invention.

[0031] Figure 3 It is a schematic diagram of the cross-sectional structure of the rotating cover of the present invention.

[0032] Figure 4 For the present invention Figure 3 Schematic diagram of the structure with the A part in the middle enlarged.

[0033] Figure 5 It is a structural schematic diagram of the smearing mechanism of the present invention.

[0034] Figure 6 It is a schematic diagram of the structure above the first piston of the present invention.

[0035] Figure 7 For the present invention Figure 6 Schematic diagram of the structure with the B part enlarged.

[0036] Figure 8 It is a schematic structural diagram of the straight tube, the extruded strip and the first oil pipe of the present invention.

[0037] Fig. 9 For the present invention Figure 8 Schematic diagram of the structure enlarged in the middle C part.

[0038] Fig.10 It is a structural schematic diagram of the bottom end of the oil storage box of the present invention.

[0039] Description of Reference Numerals

[0040] 1. Shell;

[0041] 2. Threaded rod;

[0042] 3. Driving mechanism; 301. Motor; 302. Nut; 3021. Ventilation hole; 303. Worm gear; 304. Worm;

[0043] 4. gas injection mechanism; 401. straight cylinder; 402. first piston; 4021. long hole; 4022. air vent; 403. air outlet pipe; 404. top cover; 405. first one-way valve; 406. second one-way valve;

[0044] 5. Rotating cover; 501. Fixed shell; 502. Rotating shell; 5021. Bottom blade; 503. Air jet nozzle; 504. First annular seat; 505. Second annular seat; 506. Sealing gasket; 507. First annular cavity; 508. Second annular cavity;

[0045] 6. Oil filling mechanism; 601. Extrusion strip; 602. Fixed cylinder; 603. First oil pipe; 604. Second oil pipe; 605. Pressure strip; 606. Second piston; 607. Return spring; 608. Third one-way valve; 609. Fourth one-way valve;

[0046] 7. Oil storage box; 701. Suction tube; 702. Oil supply pipe; 703. Oil filling port;

[0047] 8. smear mechanism; 801. outer tube body; 802. third piston; 803. inner tube body; 804. arc-shaped shell; 8041. fine hole; 805. smear brush; 806. compression spring;

[0048] 9. Gate. DETAILED DESCRIPTION

[0049] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0050] like Figure 1-Figure 10 As shown, the water conservancy project gate driving device includes a shell 1 and a threaded rod 2 fixed to the top of the gate 9; it also includes: a driving mechanism 3, the driving mechanism 3 is used to drive the threaded rod 2 to move up and down, and the driving mechanism 3 is installed on the shell 1; a rotating cover 5, the rotating cover 5 is connected to the driving mechanism 3, and the rotating cover 5 is sleeved on the threaded rod 2; an air injection mechanism 4, the air injection mechanism 4 is connected to the top of the threaded rod 2, and the air outlet end of the air injection mechanism 4 is connected to a first annular cavity 507 arranged in the rotating cover 5; a plurality of air nozzles 503 facing the threaded rod 2 and distributed in a circular array are arranged around the inner circle of the first annular cavity 507; an oil injection mechanism 6, the oil outlet end of the oil injection mechanism 6 is connected to a second annular cavity 508 arranged in the rotating cover 5; a plurality of smearing mechanisms 8 distributed in a circular array are arranged around the inner circle of the second annular cavity 508, and the smearing mechanism 8 abuts against the threaded rod 2.

[0051] like Figure 2 As shown in the figure, as a specific technical solution, the driving mechanism 3 includes a nut 302 and a rotation driving part, the nut 302 is rotatably mounted in the housing 1, and the nut 302 is connected to the rotation driving part. The rotation driving part includes a motor 301, the output shaft end of the motor 301 is fixedly connected with a worm 304, and the worm 304 is rotatably mounted in the housing 1, the worm 304 is meshedly connected with a worm wheel 303, and the worm wheel 303 is fixedly sleeved on the nut 302.

[0052] The driving mechanism 3 drives the worm 304 to rotate through the motor 301, and the nut 302 and the worm wheel 303 are rotated together through the meshing transmission between the worm 304 and the worm wheel 303. When the nut 302 rotates, the nut 302 and the threaded rod 2 are threaded, and the guiding effect provided at the installation position of the gate 9 is cooperated, so that the threaded rod 2 drives the gate 9 to move up and down, thereby realizing the opening and closing drive of the gate 9.

[0053] like Figure 3-Figure 4As shown, as a specific technical solution, the rotating cover 5 includes a fixed shell 501 and a rotating shell 502; the top of the fixed shell 501 is fixedly connected to the bottom surface of the shell 1, the bottom end of the nut 302 extends to the outside of the bottom of the shell 1, and the bottom end surface of the nut 302 is fixedly connected to the top of the rotating shell 502, and a cavity is formed between the inner wall of the fixed shell 501 and the outer wall of the rotating shell 502, and three groups of isolation parts are arranged in the cavity, and the cavity is divided into a first annular cavity 507 and a second annular cavity 508 by the three groups of isolation parts.

[0054] The fixed shell 501 and the rotating shell 502 are both rotating bodies. The rotating shell 502 can rotate together with the nut 302 to rotate the air nozzle 503 and the coating mechanism 8 on the circumference of the threaded rod 2 to evenly spray airflow on the circumference of the threaded rod 2 and evenly coat the lubricating oil.

[0055] When the air nozzle 503 sprays air flow toward the threaded rod 2, the air pressure of the air flow is used to blow off dirt and dust adhering to the threaded rod 2 to achieve cleaning.

[0056] The rotating shell 502 is conical, and gradually becomes thinner from top to bottom, so that the bottom end of the rotating shell 502 is close to the rod surface of the threaded rod 2, and a circular bottom blade 5021 is set on the bottom edge of the rotating shell 502. When moving on the threaded rod 2, the bottom blade 5021 is used to scrape off the dirt adhered to the threaded rod 2 for preliminary cleaning. After the preliminary cleaning, the threaded rod 2 moves to the position of the air nozzle 503 to perform air flow impact for secondary cleaning, thereby ensuring the cleaning effect.

[0057] By cleaning the threaded rod 2, it is prevented that the threaded rod 2 carries dirt and performs threaded transmission with the nut 302, thereby preventing the wear of both from increasing and affecting the service life.

[0058] like Figure 4 As shown, as a specific technical solution, the isolation part includes a first circular ring seat 504 and a second circular ring seat 505; the outer ring of the first circular ring seat 504 is fixedly connected to the inner wall of the fixed shell 501, and the inner ring of the second circular ring seat 505 is fixedly connected to the outer wall of the rotating shell 502, and a sealing gasket 506 is filled and arranged between the first circular ring seat 504 and the second circular ring seat 505, and the sealing gasket 506 is fixedly connected to the first circular ring seat 504.

[0059] The first annular cavity 507 and the second annular cavity 508 are separated by an isolating part, and the first annular seat 504 and the second annular seat 505 are not fixedly connected, so that the rotation requirement of the rotating shell 502 about the fixed shell 501 is met, and the sealing gasket 506 ensures the sealing effect of the separation.

[0060] like Figure 2 , Figure 8 as well as Fig. 9 As shown, as a specific technical solution, the gas injection mechanism 4 includes a straight cylinder 401; the bottom end of the straight cylinder 401 is fixedly connected to the top surface of the shell 1, and a top cover 404 is fixedly installed on the top of the straight cylinder 401. A first piston 402 is installed in the straight cylinder 401, and the bottom of the first piston 402 is fixedly connected to the top of the threaded rod 2. A first one-way valve 405 and a second one-way valve 406 are fixedly installed on the top cover 404, and the bottom end of the first one-way valve 405 and the bottom end of the second one-way valve 406 are both connected to the top of the straight cylinder 401, the first one-way valve 405 is connected to an air outlet pipe 403, and one end of the air outlet pipe 403 away from the first one-way valve 405 is fixedly connected to the side wall of the fixed shell 501, and the air outlet pipe 403 is connected to the first annular cavity 507.

[0061] During the process of opening the gate 9, the threaded rod 2 moves upward, and the top end of the threaded rod 2 pushes the first piston 402 to move upward in the straight cylinder 401 to squeeze the air in the straight cylinder 401. The air passes through the first one-way valve 405 and the air outlet pipe 403, and then enters the first annular cavity 507, and then is sprayed onto the surface of the threaded rod 2 by the air nozzle 503. The dirt attached to the threaded rod 2 is blown off by the action of the airflow.

[0062] When the gate 9 is closed, the threaded rod 2 drives the first piston 402 to move downward to reset, and the straight cylinder 401 draws external air through the second one-way valve 406 to compensate the air entering the straight cylinder 401; in specific implementation, a filter can be installed on the second one-way valve 406 to filter the air entering the straight cylinder 401 to ensure the cleanliness of the airflow blown out by the air nozzle 503.

[0063] like Figure 2 , Figure 6 as well as Figure 7As shown, as a specific technical solution, the oil injection mechanism 6 includes a fixed cylinder 602; the fixed cylinder 602 is fixedly installed to the top of the first piston 402, and a second piston 606 is installed in the fixed cylinder 602. A pressure strip 605 is fixedly connected to one side of the second piston 606, and the pressure strip 605 passes through a through hole provided on one side of the fixed cylinder 602. An arc surface is provided at one end of the pressure strip 605 away from the second piston 606. A return spring 607 is installed between one side of the second piston 606 and the inner side wall of the fixed cylinder 602. The second piston 606 An oil chamber is formed between the side away from the pressure strip 605 and the inner wall of the fixed cylinder 602, on which a third one-way valve 608 and a fourth one-way valve 609 are fixedly installed, and the oil chamber is communicated with the third one-way valve 608 and the fourth one-way valve 609, and the third one-way valve 608 is connected to a first oil pipe 603, the top end of the first oil pipe 603 is fixedly connected to the top cover 404, the top end of the first oil pipe 603 is connected to a second oil pipe 604, the second oil pipe 604 is fixedly connected to the side wall of the fixed shell 501, and the second oil pipe 604 is communicated with the second annular chamber 508.

[0064] The arc surface at one end of the pressure strip 605 abuts against an extrusion strip 601, which is vertically arranged in the straight tube 401, and the top end of the extrusion strip 601 is fixedly connected to the top cover 404. The extrusion strip 601 is provided with a plurality of raised portions and a plurality of recessed portions, and the plurality of raised portions and the plurality of recessed portions are alternately distributed in the length direction of the extrusion strip 601.

[0065] A long hole 4021 is opened in the middle of the first piston 402, and the long hole 4021 passes through the axis of the threaded rod 2. An oil storage box 7 is arranged in the long hole 4021, and a suction tube 701 is arranged in the oil storage box 7. The top end of the suction tube 701 is connected to the fourth one-way valve 609.

[0066] When the threaded rod 2 drives the first piston 402 to move in the vertical direction, Figure 6-Figure 7 As shown, the pressure strip 605 moves in the length direction of the extrusion strip 601. Due to the setting of the raised and recessed parts on it and the elastic force of the reset spring 607, the pressure strip 605 is continuously squeezed by the raised part or enters into the recessed part, so that the pressure strip 605 drives the second piston 606 to move back and forth left and right, thereby causing the volume of the oil chamber to decrease or increase back and forth. In the process of reducing the volume of the oil chamber, the oil in the oil chamber passes through the third one-way valve 608, the first oil pipe 603 and the second oil pipe 604, and then enters the second annular chamber 508. Then the oil is applied to the threaded rod 2 through the smearing mechanism 8, so as to achieve lubrication of the threaded rod 2 and reduce the wear between the threaded rod 2 and the nut 302.

[0067] When the volume of the oil chamber increases, the oil in the oil storage box 7 is sucked through the fourth one-way valve 609 and the suction pipe 701 to compensate the oil for the oil chamber.

[0068] Through the above design, lubrication can be continuously performed when the threaded rod 2 moves up and down.

[0069] like Figure 7 As shown, at this time, the arc surface of the pressure strip 605 abuts against the raised portion, and the second piston 606 moves to the far right, the oil chamber volume is the smallest, and the return spring 607 is in a stretched state; when the pressure strip 605 moves to the recessed portion, the elastic force of the return spring 607 causes the second piston 606 to move to the left, the oil chamber volume increases, and the pressure strip 605 contacts the recessed portion.

[0070] The extrusion bar 601 is composed of alternating raised parts and recessed parts to form an undulating walking surface. When the pressure bar 605 moves on it, the elastic force of the return spring 607 drives the second piston 606 to move left and right.

[0071] The setting of the long hole 4021 provides a storage space for the extrusion bar 601 when the first piston 402 moves on it, and will not block the upward movement of the first piston 402. At the same time, the long hole 4021 provides an installation space for the oil storage box 7.

[0072] The first oil pipe 603 is a spiral hose. When the first piston 402 moves upward, the first oil pipe 603 is stored. When the first piston 402 moves downward, the first oil pipe 603 is stretched. This design is suitable for the up and down movement of the first piston 402.

[0073] like Figure 6 as well as Figure 7 As shown, as a specific technical solution, an air hole 4022 is provided on the first piston 402, and the air hole 4022 is used to connect the top end of the oil storage box 7 with the bottom end of the straight cylinder 401 for ventilation of the oil storage box 7, and a hole body (not shown in the figure) is provided on the side of the bottom end of the straight cylinder 401. Through this design, the oil storage box 7 is kept at atmospheric pressure.

[0074] The smearing mechanism 8 includes an elastic telescopic tube in a compressed state, one end of which is connected to an arc-shaped shell 804, on which a smearing brush 805 is arranged, and the smearing brush 805 is in contact with the circumference of the threaded rod 2; a plurality of evenly distributed fine holes 8041 are opened on the surface of the arc-shaped shell 804 on which the smearing brush 805 is arranged.

[0075] The elastic telescopic tube includes an outer tube body 801; one end of the outer tube body 801 is fixedly connected to the inner wall of the rotating shell 502, the outer tube body 801 is communicated with the second annular cavity 508, a third piston 802 is connected in cooperation with the outer tube body 801, a middle hole is opened in the middle of the third piston 802, the middle hole is fixedly connected with one end of the inner tube body 803, one end of the inner tube body 803 away from the third piston 802 is communicated with the arc shell 804, and one end of the inner tube body 803 away from the third piston 802 extends to the outside of the outer tube body 801, and one side of the third piston 802 is elastically connected to one end of the outer tube body 801 through a compression spring 806.

[0076] The oil in the second annular cavity 508 passes through the port of the outer tube body 801, enters the inner tube body 803 from the middle hole on the third piston 802, then enters the arc shell 804, and then enters the smear brush 805 from the fine hole 8041. When the threaded rod 2 moves up and down, the smear brush 805 smears the oil onto the threaded rod 2, and the smearing mechanism 8 rotates and moves, so that the oil can be evenly applied to the circumference of the threaded rod 2.

[0077] The compression spring 806 is in a compressed state, providing pressure to the inner tube 803, so that the smear brush 805 on the arc-shaped shell 804 is always in contact with the threaded rod 2, thereby ensuring the smearing effect.

[0078] like Fig.10 As shown, as a specific technical solution, the bottom end of the threaded rod 2 is fixedly connected to the top surface of the gate 9, so that the bottom end of the long hole 4021 is blocked, and at the same time the oil storage box 7 extends to the bottom end position of the threaded rod 2, that is, the bottom end of the long hole 4021; the bottom of the oil storage box 7 is connected to an oil replenishing pipe 702 arranged in the gate 9, and a refueling port 703 is arranged at one end of the oil replenishing pipe 702 away from the oil storage box 7, and the refueling port 703 extends to the top surface of the gate 9. A one-way valve can be used for the refueling port 703, and oil is added to the oil storage box 7 through an external refueling device from the refueling port 703 to replenish the oil storage box 7 with oil, and a cover is provided on the refueling port 703 when no oil is added to seal it.

[0079] like Figure 2-Figure 3 As shown, as a specific technical solution, a number of ventilation holes 3021 distributed in a circular array are opened on the side wall of the nut 302, and the ventilation holes 3021 are inverted L-shaped. One end of the ventilation holes 3021 is connected to the shell 1, and the other end is connected to the top of the rotating shell 502. In specific implementation, a fan or an air pump (not shown in the figure) is installed on the shell 1, and a filter is set at the air inlet. During operation, air flow is continuously injected into the shell 1 and guided through the ventilation holes 3021, so that downward blowing is formed on the top of the rotating shell 502, which facilitates the downward discharge of dust blown off the threaded rod 2 by the air nozzle 503; the bottom of the rotating shell 502 exhausts air downward and discharges the dirt after cleaning.

[0080] In summary, when driving the threaded rod 2 to move upward, the dirt attached to the threaded rod 2 can be scraped downward by the bottom blade 5021 for preliminary cleaning. After the preliminary cleaning, the threaded rod 2 moves to the position of the air nozzle 503, and the air nozzle 503 cleans the threaded rod 2 again. After cleaning, the threaded rod 2 is lubricated by the coating mechanism 8 and the air injection mechanism 4 to reduce the wear between the threaded rod 2 and the nut 302.

[0081] The present invention is not limited to the above-mentioned embodiments. Any changes in shape or structure are within the protection scope of the present invention. The protection scope of the present invention is defined by the attached claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principle and essence of the present invention, but these changes and modifications are within the protection scope of the present invention.

Claims

1. A hydraulic engineering gate driving device, comprising a housing (1) and a threaded rod (2) fixedly connected to the top of a gate (9); characterized in that: Also includes: A driving mechanism (3), the driving mechanism (3) being used to drive the threaded rod (2) to move up and down, and the driving mechanism (3) being mounted on the housing (1); A rotating cover (5), wherein the rotating cover (5) is connected to the driving mechanism (3), and the rotating cover (5) is sleeved onto the threaded rod (2); An air injection mechanism (4), wherein the air injection mechanism (4) is connected to the top end of the threaded rod (2), and an air outlet end of the air injection mechanism (4) is connected to a first annular cavity (507) arranged in the rotating cover (5); A plurality of air nozzles (503) facing the threaded rod (2) and distributed in a circular array are arranged around the inner circle of the first annular cavity (507); An oil injection mechanism (6), wherein an oil outlet end of the oil injection mechanism (6) is connected to a second annular cavity (508) disposed in the rotating cover (5); A plurality of smearing mechanisms (8) distributed in a ring array are arranged around the inner circle of the second annular cavity (508), and the smearing mechanisms (8) are in contact with the threaded rod (2).

2. The hydraulic engineering gate driving device according to claim 1, characterized in that: The driving mechanism (3) comprises a nut (302) and a rotation driving part. The nut (302) is rotatably mounted in the housing (1), and the nut (302) is connected to the rotation driving part.

3. The hydraulic engineering gate driving device according to claim 2, characterized in that: The rotating cover (5) comprises a fixed shell (501) and a rotating shell (502); the top end of the fixed shell (501) is fixedly connected to the bottom surface of the shell (1); the bottom end of the nut (302) extends to the outside of the bottom of the shell (1); and the bottom end surface of the nut (302) is fixedly connected to the top end of the rotating shell (502); a cavity is formed between the inner wall of the fixed shell (501) and the outer wall of the rotating shell (502); three groups of isolation parts are arranged in the cavity; the cavity is divided into a first annular cavity (507) and a second annular cavity (508) by the three groups of isolation parts.

4. The hydraulic engineering gate driving device according to claim 3, characterized in that: The isolation part includes a first annular seat (504) and a second annular seat (505); the outer ring of the first annular seat (504) is fixedly connected to the inner wall of the fixed shell (501), and the inner ring of the second annular seat (505) is fixedly connected to the outer wall of the rotating shell (502); a sealing gasket (506) is filled and arranged between the first annular seat (504) and the second annular seat (505), and the sealing gasket (506) is fixedly connected to the first annular seat (504).

5. The hydraulic engineering gate driving device according to claim 1, characterized in that: The gas injection mechanism (4) comprises a straight cylinder (401); the bottom end of the straight cylinder (401) is fixedly connected to the top surface of the shell (1); a top cover (404) is fixedly installed on the top of the straight cylinder (401); a first piston (402) is installed in the straight cylinder (401); the bottom of the first piston (402) is fixedly connected to the top of the threaded rod (2); a first one-way valve (405) and a second one-way valve (406) are fixedly installed on the top cover (404); the bottom end of the first one-way valve (405) and the bottom end of the second one-way valve (406) are both connected to the top of the straight cylinder (401); the first one-way valve (405) is connected to an air outlet pipe (403); and the air outlet pipe (403) is connected to a first annular cavity (507).

6. The hydraulic engineering gate driving device according to claim 5, characterized in that: The oil injection mechanism (6) comprises a fixed cylinder (602); the fixed cylinder (602) is fixedly installed to the top of the first piston (402); a second piston (606) is installed in the fixed cylinder (602); a pressure strip (605) is fixedly connected to one side of the second piston (606); a return spring (607) is installed between one side of the second piston (606) and the inner wall of the fixed cylinder (602); an oil chamber is formed between the side of the second piston (606) away from the pressure strip (605) and the inner wall of the fixed cylinder (602); the oil chamber is communicated with a third one-way valve (608) and a fourth one-way valve (609); the third one-way valve (608) is connected to a first oil pipe (603); the top end of the first oil pipe (603) is connected to a second oil pipe (604); the second oil pipe (604) is communicated with a second annular chamber (508).

7. The hydraulic engineering gate driving device according to claim 6, characterized in that: One end of the pressure strip (605) is in contact with an extrusion strip (601), the extrusion strip (601) is vertically arranged in the straight tube (401), and the top end of the extrusion strip (601) is fixedly connected to the top cover (404), and the extrusion strip (601) is provided with a plurality of raised portions and a plurality of recessed portions, and the plurality of raised portions and the plurality of recessed portions are alternately distributed in the length direction of the extrusion strip (601).

8. The hydraulic engineering gate driving device according to claim 6, characterized in that: A long hole (4021) is provided in the middle of the first piston (402), and the long hole (4021) passes through the axis of the threaded rod (2). An oil storage box (7) is provided in the long hole (4021), and a suction tube (701) is provided in the oil storage box (7). The top end of the suction tube (701) is connected to the fourth one-way valve (609).

9. The hydraulic engineering gate driving device according to claim 1, characterized in that: The smear mechanism (8) comprises an elastic telescopic tube in a compressed state, one end of the elastic telescopic tube is connected to an arc-shaped shell (804), a smear brush (805) is arranged on the arc-shaped shell (804), and the smear brush (805) is in contact with the circumferential surface of the threaded rod (2); a plurality of evenly distributed fine holes (8041) are provided on the surface of the arc-shaped shell (804) on which the smear brush (805) is arranged.

10. The hydraulic engineering gate driving device according to claim 9, characterized in that: The elastic telescopic tube comprises an outer tube body (801); the outer tube body (801) is communicated with the second annular cavity (508); a third piston (802) is connected in the outer tube body (801); a middle hole is opened in the middle of the third piston (802); the middle hole is fixedly connected with one end of the inner tube body (803); one end of the inner tube body (803) away from the third piston (802) is communicated with the arc shell (804); one side of the third piston (802) is elastically connected with one end of the outer tube body (801) via a compression spring (806).

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