Counterweight energy-saving type steel cable driving gate

Abstract

The invention discloses a counterweight energy-saving type steel cable driving gate which comprises a gate body, a gate frame, a counterweight body and a rotating mechanism, the gate frame comprises a left stand column and a right stand column, the height size of the counterweight body is smaller than that of the gate, the rotating mechanism comprises a rotating shaft, and a first steel cable section and a second steel cable section are wound on the rotating shaft; the ends of the first steel cable section and the second steel cable section are connected with the gate body and the balance weight body respectively, the winding directions of the first steel cable section and the second steel cable section on the rotating shaft are opposite, the rotating mechanism drives the gate body and the balance weight body to lift up and down relatively, and a gap exists between the gate body and the balance weight body which lift up and down relatively. The counterweight body and the gate are combined through the rope winding device and the rotating shaft, the gate can be opened and closed only by providing a small driving force to drive the initial speed through the power mechanism, and therefore the purpose of saving energy consumption is achieved.

Description

Technical Field

[0001] The present invention relates to the field of water conservancy projects, and in particular to a counterweight energy-saving steel cable 462 driven gate. Background Art

[0002] The gate used in the field of water conservancy projects is a control facility for closing and opening the drainage channel. It can be used to intercept water flow, control water level, adjust flow, discharge sediment and floating objects, etc. The gates currently used are generally hoisted by steel cables or driven by the relative rotation of screws to make the gates rise or fall reciprocating motion. For the steel cable driven gate, the rotating shaft of the rotating mechanism is driven by the motor to rotate. When the rotating shaft rotates, the steel cable fixed on the rotating shaft is wound or released on the rotating shaft, thereby shortening or increasing the length of the steel cable between the rotating shaft and the gate body, and realizing the lifting or closing of the gate. In this process, the motor drives the rotating shaft of the rotating mechanism to rotate. When the gate is lifted, the motor rotates forward, driving the rotating shaft to rotate forward, the length of the steel cable wrapped on the rotating shaft increases, the steel cable between the gate and the rotating shaft becomes shorter, the gate is lifted, and the power mechanism needs to overcome the entire gravity of the gate to do work in order to lift the gate; when the gate is lowered, the motor rotates in the opposite direction, the length of the steel cable wrapped on the rotating shaft decreases, and the steel cable between the gate and the rotating shaft becomes longer. The gate drops at a certain speed when the buffer torque provided by the motor is balanced with the gate gravity torque. During the descent, the motor needs to provide a buffer torque to resist the gate gravity torque and keep the gate at a certain speed. Otherwise, the gate will hit the bottom frame due to stall descent, causing an accident. Because the current cost of motor energy recovery is too high, the gravitational potential energy released during the gate descent is wasted. In an environment with abundant electricity, the energy consumption of gate opening and closing is not a prominent problem. However, in the wild where the power supply is relatively scarce, such as in an environment powered by solar energy or batteries, electricity is particularly precious. Saving electricity means that the gate can operate normally or work longer. Therefore, in an environment with relatively scarce electricity supply, a gate that can save energy is needed to close and open for water stopping and water discharge operations. Summary of the invention

[0003] The purpose of the present invention is to propose a counterweight energy-saving steel cable driven gate, in which a counterweight body is arranged on the gate, and the gate body and the counterweight body are respectively connected by a steel cable provided on one side of the rotating shaft, so that the counterweight body and the gate body realize force balance, and the rotating shaft realizes torque balance. The counterweight body cooperates with the rise or fall of the gate to provide the gate body with an upward pulling force or a downward buffering force. Each link of the gate operation no longer requires a power mechanism to overcome the huge gravity or buffering force of the gate to maintain balance, nor does it require a power mechanism to overcome the gravity of the gate body and the counterweight body to do work, thereby greatly reducing the driving force demand and energy consumption demand of the gate, thereby achieving the purpose of reducing driving force and reducing energy consumption.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: a counterweight energy-saving steel cable driven gate, including a gate body and a gate frame, the gate frame including left and right columns, a counterweight body, and a rotating mechanism; the height dimension of the counterweight body is smaller than the height dimension of the gate, the rotating mechanism includes a rotating shaft, a first steel cable segment and a second steel cable segment are wound on the rotating shaft, the ends of the first steel cable segment and the second steel cable segment are respectively connected to the gate body and the counterweight body, the winding directions of the first steel cable segment and the second steel cable segment on the rotating shaft are opposite, the rotating mechanism drives the gate body and the counterweight body to rise and fall relative to each other, and there is a gap between the gate body and the counterweight body that are lifted up and down.

[0005] In some feasible embodiments, a rope winder is also provided on the rotating shaft, and the rope winder includes a first rope winder and a second rope winder, the rope winders are fixed on the rotating shaft, the first steel cable segment is wound around the first rope winder, and the second steel cable segment is wound around the second rope winder, and the winding direction of the first steel cable segment on the first rope winder is opposite to the winding direction of the second steel cable segment on the second rope winder.

[0006] Furthermore, the rope winder can slide in the axial direction of the rotating shaft.

[0007] In some feasible implementations, a counterweight slide groove and a gate slide groove are provided on the left and right columns of the gate frame, and the two ends of the counterweight body are placed in the counterweight slide groove to slide up and down, and the two ends of the gate body are placed in the gate slide groove to slide up and down.

[0008] In some feasible implementations, a guide wheel 45 is provided between the inner side of the counterweight chute and the counterweight body.

[0009] Preferably, a first low limit block, a first high limit block and a second high limit block are also provided on the left and right columns; the first low limit block and the first high limit block are provided on the counterweight chute, and the second high limit block is provided on the gate chute.

[0010] In some feasible implementations, the power mechanism further comprises a power mechanism, wherein the power mechanism comprises a drive motor. In some feasible implementations, the power mechanism further comprises a speed reducer.

[0011] In some feasible embodiments, a steering device is connected to the power mechanism, and inside the steering device is a pair of mutually meshing bevel gear sets, and the bevel gear sets are respectively connected to a first steering shaft and a second steering shaft, and an angle of 90 degrees is formed between the first steering shaft and the second steering shaft. The first steering shaft is connected to the reducer worm shaft of the reducer through a coupling, and the second steering shaft faces outward and is connected to the manual crank bayonet, and the manual crank bayonet is connected to the manual crank.

[0012] In some feasible implementations, a manual crank is installed at the end of the rotating shaft.

[0013] Preferably, the length of the counterweight slide groove is greater than or equal to the sum of the lifting height of the gate body and the height of the counterweight body.

[0014] In some feasible implementations, the counterweight body is composed of a counterweight body bearing platform and a counterweight object, and the number of the counterweight object is at least one.

[0015] Preferably, the relationship between the gate body and the counterweight body should satisfy: the weight of the counterweight body * the length of the counterweight body arm < 2 * the weight of the gate body * the length of the gate arm, wherein the length of the counterweight body arm is the distance from the axial centerline of the rotating shaft to the line of action of the counterweight's weight; the length of the gate body arm is the distance from the axial centerline of the rotating shaft to the line of action of the gate body's weight.

[0016] Compared with the prior art, the advantages of the present invention are: 1. The energy-saving counterweight cable-driven gate of the present invention includes a gate body, a power mechanism, a counterweight body, and a rotating mechanism. When the moment of the weight of the counterweight on the rotating shaft is equal to the moment of the weight of the gate body on the rotating shaft, the counterweight body and the gate body achieve force balance, and the rotating shaft achieves moment balance. The counterweight body cooperates with the rise or fall of the gate to provide the gate body with a pulling force for rising or a buffering force for falling, and at the same time stores the gravitational potential energy released during the descent of the gate body or provides gravitational potential energy for the rising process of the gate body. The combination of the gate body and the counterweight body realizes the conservation of gravitational potential energy during the lifting and lowering process of the gate body. Since the gravity of the gate body and the gravity of the counterweight are both carried by the rotating shaft, during the starting, running and braking stages of the gate opening and closing process, the power mechanism no longer needs to overcome the huge gravity or buffering force of the gate body, nor does it need to overcome the gravity of the gate body and the counterweight to do work; the power mechanism only needs to provide a small driving force in the starting stage of the gate body to overcome the friction of each link and make the gate body and the counterweight obtain a certain initial velocity. During the running stage of the gate body, it only needs to overcome the friction of each link to maintain the gate body and the counterweight at a certain speed. During the braking stage of the gate body, a small buffering force is provided to cooperate with the friction of each link as resistance, so that the gate is braked quickly, easily avoiding possible stalling accidents during the descent of the gate body. Since the power mechanism does not need to overcome the gravity of the gate body and the counterweight to do work, the gate's driving force demand and energy consumption demand are greatly reduced, and the energy consumption demand of the power mechanism during the gate opening and closing process is reduced, which potentially increases the standby time of the power mechanism.

[0017] 2. The counterweight energy-saving steel cable driven gate of the present invention has a longer service life of the power mechanism, and manual opening and closing is more time-saving and labor-saving, because each link of the gate operation no longer requires a power mechanism to overcome the huge gravity or buffer force of the gate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the present invention; Figure 2 It is a schematic structural diagram of the steering device 7 in the present invention.

[0019] In the figure: lintel 11, column 12, counterweight slide 121, gate slide 122, bottom beam 13, drive gear 2, gate body 3, rotating shaft 42, first rope winder 411, second rope winder 412, bearing 44 seat 43, bearing 44, guide wheel 45, steel cable 46, guide rope wheel 47, counterweight body 5, drive motor 6, coupling 62, steering device 7, second steering shaft 71, first steering shaft 72, first bevel gear 73, second bevel gear 74, manual crank 75, first high position limit block 81, second high position limit block 82, first low position limit block 83, reducer 9, reducer worm shaft 91. Implementation

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral whole; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. The present invention will be further explained below in conjunction with the drawings and specific implementations.

[0021] A counterweight energy-saving cable-driven gate of the present invention includes a gate body 3, a power mechanism, a counterweight body 5, and a rotating mechanism. Generally, the gate frame is formed by a door lintel 11, left and right columns 12, and a bottom beam 13. Usually, the power mechanism is placed on the door lintel 11. In the present application, the power mechanism includes a drive motor 6 and may also include a reducer 9. The drive motor 6 is connected to the reducer 9, and the rotating mechanism can be set on the door lintel 11. The rotating mechanism includes a rotating shaft 42, and the power mechanism drives the rotating mechanism to rotate. In some feasible embodiments, see Figure 1, a driving gear 2 is arranged on the rotating shaft 42, and the power shaft of the driving motor 6 is gear-engaged with the driving gear 2. The two ends of the rotating shaft 42 are fixed on the bearing 44 seat 43 with the bearing 44, and the bearing 44 seat 43 is fixed on the door lintel 11. In some feasible embodiments, a first steel cable 46 section and a second steel cable 46 section are wound around the rotating shaft 42 in the rotating mechanism, and one end of each steel cable 46 section is fixed to the rotating shaft 42; the two steel cables 46 sections are wound around the rotating shaft 42 in opposite directions, so there is a steel cable 46 on both sides of the rotating shaft 42, and the steel cable 46 on one side of the rotating shaft 42 is connected to the gate, and the steel cable 46 on the other side is connected to the counterweight 5. In some feasible embodiments, the first steel cable 46 section and the second steel cable 46 section can be part of a whole steel cable 46. The first steel cable 46 section and the second steel cable 46 section can be one or more. Generally, in order to ensure that the gate and the counterweight 5 are balanced, two first steel cables 46 and two second steel cables 46 are respectively provided. In this case, the arm length of the counterweight 5 and the arm length of the gate may be unequal due to the uneven diameter of the rotating shaft 42. The arm length of the counterweight 5 is the radius of the place where the steel cable 46 connecting the counterweight 5 is wound on the rotating shaft 42, and the arm length of the gate is the radius of the place where the steel cable 46 connecting the gate body 3 is wound on the rotating shaft 42.

[0022] During the lifting and lowering process of the gate body 3 and the counterweight 5, the moment = force * lever arm; Lever arm: the distance between the line of action of the force and the center line of the rotation axis; The moment of the gate body's gravity on the rotation axis = the gate body's gravity * the gate body's lever arm length, where: Assuming that the steel cable connecting the gate body is vertical, the gate body's lever arm length is the distance between the straight line connecting the steel cable and the center line of the rotation axis; The moment of the weight of the counterweight on the rotating axis = the weight of the counterweight * the arm of the counterweight; The length of the force arm of the counterweight is the distance between the steel cable connecting the counterweight and the rotating shaft. It is assumed here that the steel cable connecting the counterweight remains vertical; when the gate moves upward, the rotating shaft rotates in the positive direction.

[0023] In some embodiments with lower control accuracy requirements, the steel cable 46 in the rotating mechanism is directly wound around the rotating shaft 42 for several turns to prevent the steel cable 46 from slipping with the rotating shaft 42, and then the two ends of the steel cable 46 are respectively led out from the two sides of the rotating shaft 42. When the steel cable 46 is led out from the two sides, the winding directions of the two ends of the steel cable 46 on the rotating shaft 42 are opposite. The two ends of the steel cable 46 led out from the two sides of the rotating shaft 42 are connected to the gate at one end and the counterweight 5 at the other end. Generally, in order to ensure that the gate and the counterweight 5 are balanced, two steel cables 46 are provided. In this case, the arm length of the counterweight 5 is equal to the arm length of the gate, which is equal to the radius of the rotating shaft 42.

[0024] In some feasible implementations that require higher control accuracy, a first rope winder 411 and a second rope winder 412 are provided on the rotating shaft 42 in the rotating mechanism, and the rope winders are radially fixed on the rotating shaft 42. One end of the first steel cable 46 segment and the second steel cable 46 segment are respectively fixed on the first rope winder 411 and the second rope winder 412. Then, the first steel cable 46 segment is wound around the first rope winder 411, and the second steel cable 46 segment is wound around the second rope winder 412, and they are respectively wound around the rope winders in opposite directions. One end of the first steel cable 46 segment is connected to the gate, and one end of the second steel cable 46 segment is connected to the counterweight 5.

[0025] When the first rope winder 411 rotates forwardly following the rotating shaft 42, the number of turns of the steel cable 46 wound on the rope winder increases, the length of the steel cable 46 between the rope winder and the gate body 3 decreases, and the gate is lifted under the pulling force of the counterweight 5; at the same time, the second rope winder 412 rotates forwardly following the rotating shaft 42. Since the winding directions of the steel cable 46 on the first rope winder 411 and the second rope winder 412 are opposite, the number of turns of the steel cable 46 on the second rope winder 412 decreases, the length of the steel cable 46 between the rope winder and the counterweight 5 increases, and the counterweight 5 descends under the action of gravity. The power mechanism drives the rotating mechanism to rotate, and the rotating mechanism drives the gate body 3 and the counterweight 5 to rise and fall relatively, and there is a gap between the gate body 3 and the counterweight 5 that rise and fall relatively.

[0026] Generally, in order to ensure that the gate body 3 and the counterweight body 5 are balanced, two first rope winders 411 and two second rope winders 412 are respectively provided, and two first steel cable segments 46 and two second steel cable segments 46 are respectively provided. In this case, the arm length of the counterweight body 5 is the radius of the rope winder connected to the counterweight body 5, and the arm length of the gate body 3 is the radius of the rope winder connected to the gate body 3.

[0027] When the moment of the gravity of the counterweight 5 on the rotating shaft 42 is equal to the moment of the gravity of the gate body 3 on the rotating shaft 42, the counterweight energy saving effect is the best. In some specific practices, it may be necessary to take into account energy saving and other factors, and it may not be possible to make the moment of the gravity of the counterweight 5 on the rotating shaft 42 equal to the moment of the gravity of the gate body 3 on the rotating shaft 42. In this case, as long as the moment of the gravity of the counterweight 5 on the rotating shaft 42 is less than the product of twice the weight of the gate body 3 and the length of the gate body 3 arm, the energy saving effect can still be achieved. The rope winder rotates synchronously with the rotating shaft 42 and can slide on the axial direction of the rotating shaft 42 to ensure that the steel cable 46 remains perpendicular to the rotating shaft 42 after being stressed.

[0028] The structures of rope winders from different manufacturers may be slightly different. Some rope winders have fixed points at only one end, while others have fixed points at both ends. In this case, the specific rope winding method can be flexibly set according to actual conditions, as long as the gate and counterweight body 5 connected to the steel cables 46 on both sides of the rotating shaft 42 are kept in a safe, balanced and stable posture.

[0029] Preferably, the steel cable 46 is wound around the rotating shaft 42 through rope winders, and each rope winder has the same diameter.

[0030] Preferably, the rope winder can slide in the axial direction of the rotating shaft 42 by itself, ensuring that the steel rope 46 remains perpendicular to the rotating shaft 42 after being stressed.

[0031] It should be noted that the steel cable 46, the first steel cable 46, the first steel cable 46 segment, the second steel cable 46, the second steel cable 46 segment, etc. mentioned in the present invention are listed according to the purpose, and do not refer to an independent steel cable 46. In actual design practice, it can be an independent steel cable 46 or a part of a whole steel cable 46. In the case where the steel cable 46, the first steel cable 46, the first steel cable 46 segment, the second steel cable 46, and the second steel cable 46 segment are respectively provided with two or more, different parts of a steel cable 46 can be used to undertake different purposes of the steel cable 46 segment. For example: the first steel cable 46 wound on the first rope winding device 411 and the second steel cable 46 wound on the second rope winding device 412 can be a whole steel cable, and the steel cable 46 is wound on the first rope winding device 411 and then wound on the second rope winding device 412 in the opposite direction; the steel cable 46 can also be two independent cables, which are respectively wound on the first rope winding device 411 and the second rope winding device 412 in the opposite direction.

[0032] In some feasible implementation cases, when the actual gate weight is large, the number of steel cables 46 on both sides of the rotating shaft 42 can be appropriately increased, and corresponding rope winding devices or steel cable 46 connection points can be added according to the connection method of the steel cables 46 on the rotating shaft 42. When the actual gate body 3 is light in weight, the steel cables 46 on both sides of the rotating shaft 42 can be reduced to one if safety measures are guaranteed; in some feasible implementation schemes, ropes or chains, belts, rods made of other materials can be used to replace the steel cables 46 or part of the steel cables 46 if safety measures are guaranteed.

[0033] The steel cables 46 on both sides of the rotating shaft 42 in the rotating mechanism are connected to the gate body 3 on one side and the counterweight body 5 on the other side. When the torque of the gravity of the gate body 3 on the rotating shaft 42 is equal to the torque of the gravity of the counterweight body 5 on the rotating shaft 42, the counterweight energy-saving gate achieves the best energy-saving effect.

[0034] From the perspective of force, the gravity exerted on the counterweight 5 is converted into a pulling force to lift the gate through the rotating shaft 42, and the gravity exerted on the gate is converted into an upward pulling force on the counterweight 5 through the rotating shaft 42. When the torque of the gravity of the gate body 3 on the rotating shaft 42 is equal to the torque of the gravity of the counterweight 5 on the rotating shaft 42, the rotating shaft 42 achieves torque balance: the upward pulling force exerted on the gate body 3 is equal to the gravity of the gate body 3, and the upward pulling force exerted on the counterweight 5 is equal to the gravity of the counterweight 5, and the gate body 3 and the counterweight 5 are respectively balanced in force; when the weight of the counterweight 5 and the gate body 3 are equal, the upward pulling force exerted on the gate and the upward pulling force exerted on the counterweight 5 are equal in magnitude, both of which are equal to the gravity of the gate. Since the gravity of the gate body 3 and the gravity of the counterweight 5 are both borne by the rotating shaft 42, during the starting, running and braking stages of the gate opening and closing process, the power mechanism is no longer required to overcome the huge gravity or buffering force of the gate body 3. The power mechanism only needs to provide a smaller driving force during the starting stage of the gate body 3 to overcome the friction of each link and enable the gate body 3 and the counterweight 5 to obtain a certain initial velocity. During the running stage of the gate body 3, it only needs to overcome the friction of each link to maintain the lifting and lowering of the gate body 3 and the counterweight 5 at a certain speed. During the braking stage of the gate body 3, a smaller buffering force is provided to cooperate with the friction of each link as resistance, so that the gate is braked quickly, easily avoiding the possible stalling of the gate body 3 during the descent process and causing impact on the bottom beam 13.

[0035] From the perspective of the torque on the rotating shaft 42, since the rope winder is relatively fixed to the rotating shaft 42 in the longitudinal direction, the rope winder and the rotating shaft 42 rotate synchronously, and the first rope winder 411 connected to the gate body 3 and the second rope winder 412 connected to the counterweight body 5 have opposite winding directions of the steel cable 46, so the torque directions of the gravity on the gate body 3 and the counterweight body 5 on the rotating shaft 42 are opposite. When the torque of the gravity of the gate body 3 on the rotating shaft 42 is equal to the torque of the gravity of the counterweight body 5 on the rotating shaft 42, the sum of the torques on the rotating shaft 42 is zero, the rotating shaft 42 reaches a torque balance state, the energy-saving effect of the counterweight is optimal, and the start and operation of the gate opening and closing process are In the stages of operation and braking, the power mechanism no longer needs to overcome the huge gravity of the gate body 3 on the torque of the rotating shaft 42. The power mechanism only needs to provide a small driving torque in the starting stage of the gate body 3 to overcome the friction of each link and make the gate body 3 and the counterweight 5 obtain a certain initial velocity. In the operation stage of the gate body 3, it only needs to overcome the torque generated by the friction of each link to maintain the gate body 3 and the counterweight 5 at a certain speed. In the braking stage of the gate body 3, a small buffer torque is provided to cooperate with the friction of each link as a resistance torque, so that the gate is quickly braked, and the possible stalling of the gate body 3 during the descent process is easily avoided. Accidents caused by the rotation of the gate body 3. The power mechanism only needs to output a very small torque to break the torque balance state of the rotating shaft 42, and the rotating shaft 42 can drive the gate and the counterweight to move up and down, thereby reducing the torque that the power mechanism needs to apply to the rotating mechanism when opening and closing the gate.

[0036] From the perspective of energy conversion, when the gate body 3 is lifted, the gravity of the counterweight 5 is converted into an upward pulling force on the gate through the rotating mechanism, and the pulling force does positive work on the gate body 3; the gravity of the gate is converted into an upward pulling force on the counterweight 5 through the rotating mechanism. Since the counterweight 5 moves downward relatively, it is opposite to the pulling force, so the gravity of the gate body 3 is converted into an upward pulling force on the counterweight 5 through the rotating mechanism, and negative work is done on the counterweight 5. When the radius of the first rope winder 411 and the radius of the second rope winder 412 are not equal, the length of the first rope winder 411 and the second rope winder 412 that rotate with the rotating shaft 42 to wind or release the steel cable 46 satisfies the following relationship: The length of the steel cable 46 wound and released by the first rope winder 411: the circumference of the first rope winder 411 = the length of the steel cable 46 wound and released by the second rope winder 412: the circumference of the rope winder = the number of rotations of the rotating shaft 42; the radius of the rope winder involved in the present invention refers to the radius of the place where the steel cable 46 of the rope winder is wound, and the circumference of the rope winder refers to the circumference of the cross-sectional circle where the steel cable 46 of the rope winder is wound.

[0037] Because: the circumference of the rope winder = 2π*the radius of the rope winder; Therefore: the length of the steel rope wound and released by the first rope winder: the length of the steel rope wound and released by the second rope winder = the radius of the first rope winder: the radius of the second rope winder.

[0038] Since the first rope winder 411 and the second rope winder 412 are on the same rotating shaft 42, the steel cable 46 rotates the same number of times, so the height of the gate body 3 and the counterweight body 5 is proportional to the radius of the rope winders to which they are connected.

[0039] Since when the torque of the rotating shaft 42 is balanced: Gate body weight * first rope winding device radius = counterweight weight * second rope winding device radius, Therefore: Gate body weight: Counterweight weight = Second rope winding radius: First rope winding radius, Gate body weight: counterweight weight = second rope winding device winding and releasing rope length: first rope winding device winding and releasing rope length, Therefore, the lifting height of the counterweight 5 and the lifting height of the gate body 3 are inversely proportional to their respective gravity (Note: gravity = weight * g, g is the acceleration of gravity, and the weight here refers to the mass), that is: Height of counterweight lifting: Height of gate lifting = Gate weight: Counterweight weight Therefore: the height of the counterweight body * the weight of the counterweight body * g = the height of the gate body * the weight of the gate body * g, where g represents the acceleration of gravity.

[0040] Therefore: the height of the counterweight body * the weight of the counterweight body = the height of the gate body * the weight of the gate body According to the calculation formula of gravitational potential energy: P=mgh, P represents gravitational potential energy, m represents mass (weight), h represents height, the height of the counterweight body * the weight of the counterweight body * g and the height of the gate body * the weight of the gate body * g are equal, that is, the potential energy values ​​increased by the counterweight body and the gate body are equal. Since the lifting height of the counterweight body 5 is in the opposite direction to the lifting height of the gate body 3, one is positive and the other is negative, and the sum of the two is zero.

[0041] When the radius of the first rope winder 411 and the second rope winder 412 are the same, in order to achieve the best counterweight energy-saving effect, the weight of the counterweight body 5 needs to be equal to the weight of the gate body 3, and the above situation is simplified: the counterweight body 5 and the gate body 3 rise and fall relatively, and the speed of the counterweight body 5 and the gate body 3 relative to each other is equal in magnitude and opposite in direction, so the lifting height of the counterweight body 5 is equal to the lifting height of the gate body 3. According to the gravity potential energy calculation formula P=mgh, P represents gravity potential energy, m represents mass, g represents gravity acceleration, and h represents height; the gravity potential energy reduced by the counterweight body 5 is equal to the gravity potential energy increased by the gate body 3; when the gate body 3 descends, the gravity potential energy of the gate body 3 decreases, the counterweight body 5 is lifted, and the gravity potential energy increases. Similarly, the gravity potential energy increased by the counterweight body 5 is equal to the gravity potential energy reduced by the gate body 3. Therefore, during the opening and closing process of the gate body 3, the power mechanism only needs to provide an initial velocity to the counterweight 5 and the gate and output very little energy to achieve the opening and closing of the gate, thereby achieving the purpose of reducing the energy consumption of the power mechanism during the opening and closing process of the gate.

[0042] In some feasible embodiments, the rope winder can slide on the rotating shaft 42. The rope winder is radially fixed on the rotating shaft 42, and can slide and adjust itself axially on the rotating shaft 42 along with the winding inclination of the steel cable 46, so as to ensure that the steel cable 46 is always perpendicular to the rotating shaft 42 during the winding process. Specifically, the first rope winder 411 is wound with the steel cable 46, one end of the steel cable 46 is fixed on the rope winder, and the other end is connected to the gate body 3; the second rope winder 412 is wound with the steel cable 46, one end of the steel cable 46 is fixed on the rope winder, and the other end is connected to the counterweight 5. When the gate is lifted, the power mechanism drives the rotating shaft 42 to rotate forward, the first rope winder 411 rotates forward following the rotating shaft 42, the number of turns of the steel cable 46 wound on the rope winder increases, and the steel cable 46 between the first rope winder 411 and the gate tends to deviate from the direction perpendicular to the rotating shaft 42. At this time, gravity will generate a component force to pull the first rope winder 411 back to the position where the steel cable 46 between the first rope winder 411 and the gate is perpendicular to the rotating shaft 42. When the gate body 3 is lowered, the power mechanism drives the rotating shaft 42 to rotate in the opposite direction, the first rope winder 411 rotates in the opposite direction following the rotating shaft 42, the number of turns of the steel cable 46 wound on the rope winder decreases, and the steel cable 46 between the first rope winder 411 and the gate tends to deviate from the direction perpendicular to the rotating shaft 42. As in the case of the gate rising, gravity will generate a component force to pull the first rope winder 411 back to the position where the steel cable 46 between the first rope winder 411 and the gate is perpendicular to the rotating shaft 42.

[0043] In some feasible implementations, a counterweight chute 121 and a gate chute 122 are provided on the left and right columns 12 of the gate frame. Furthermore, the length of the counterweight chute 121 is greater than or equal to the sum of the maximum lifting height of the gate body 3 and the height of the counterweight body 5. The two ends of the counterweight body 5 are placed in the counterweight chute 121 to slide up and down, and the counterweight chute 121 plays a guiding and sliding role for the counterweight body 5. In some feasible implementations, a water stop strip can also be provided in the gate chute 122, and the two ends of the gate body 3 are placed in the gate chute 122 to slide up and down; the gate chute 122 not only guides the gate body 3 but also has a water stop effect.

[0044] During on-site installation, usually, the gate body 3 is located on the water-facing side relative to the gate frame, while the counterweight body 5 is located on the water-receiving side relative to the gate frame. Furthermore, a guide rope wheel 47 can be installed on the lintel 11, and the steel cable 46 is hung on the rope winder, then hung on the guide rope wheel 47, and finally passed through the lintel 11; the guide rope wheel 47 guides the steel cable 46 so that the steel cable 46 can pass vertically through the lintel 11, so as to achieve the purpose of keeping the steel cable 46 for suspending the gate and the counterweight vertical. The power mechanism drives the rotating shaft 42 to rotate by driving the gear meshing with it on the rotating shaft 42, and the rotation of the rotating shaft 42 drives the first rope winder 411 and the second rope winder 412 to rotate synchronously. Since the winding directions of the steel cables 46 on the first rope winder 411 and the second rope winder 412 are opposite, the gate body 3 and the counterweight body 5 are relatively lifted up and down, and there is a gap between the gate body 3 and the counterweight body 5 that are lifted up and down, that is, the distance between the thickness center of the gate body 3 and the thickness center of the counterweight body 5 should be greater than the diameter of the rope winder. So that there will be no interference or collision between the gate body 3 and the counterweight body 5 that are lifted up and down. Further, a guide wheel 45 can be provided inside the counterweight chute 121, and after the two ends of the counterweight body 5 are placed in the counterweight chute 121, the guide wheel 45 contacts the front and rear sides of the counterweight body 5. Or a guide wheel 45 is provided on the counterweight body 5, and after the two ends of the counterweight body 5 are placed in the counterweight chute 121, the guide wheel 45 contacts the inner side of the counterweight chute 121. When there is a gap between the gate body 3 and the counterweight 5, that is, when the distance between the thickness center of the gate body 3 and the thickness center of the counterweight 5 is greater than the diameter of the rope winder, or when the distance between the thickness center of the gate and the thickness center of the counterweight 5 does not match the pulley diameter, the gap between the gate body 3 and the counterweight 5 can be adjusted by adjusting the guide wheel 45. The guide wheel 45 can prevent the counterweight 5 from escaping from the counterweight chute 121 when sliding back and forth in the counterweight chute 121, thereby avoiding the occurrence of safety accidents.

[0045] Also, see Figure 1When the gate body 3 is in the open state, when the counterweight 5 is a block structure whose height dimension should be smaller than the height dimension of the gate body 3, the counterweight 5 should be located above the water surface in the channel or river so as not to affect the effect of opening the gate and releasing water. Specifically, the height dimension of the counterweight 5 can be adaptively designed according to the requirements of opening the gate of a specific channel. Whether the gate body 3 is half-open or fully open, it is only necessary to make the lower end of the counterweight 5 higher than the water surface.

[0046] Furthermore, there are multiple ways to implement the counterweight 5. The first is to treat the counterweight 5 as a whole. When the counterweight 5 and the gate body 3 are made of the same material, the length or width of the counterweight 5 needs to be changed. Generally, when the height of the counterweight 5 is smaller than the height of the gate body 3, the width of the counterweight 5 can be changed to meet the requirement that the weight of the counterweight 5 is equal to the weight of the gate body 3. Therefore, this method requires widening the width of the left and right columns 12 of the gate frame to meet the gap between the gate body 3 and the counterweight 5 that are lifted up and down. The second method is to treat the counterweight 5 as a whole. The counterweight 5 and the gate body 3 are made of different materials. The material density of the counterweight 5 is greater than the material density of the gate body 3, so as to meet the requirement that the height of the counterweight 5 is smaller than the height of the gate body 3. In this application, please refer to Figure 1 , Figure 2 , the gate body 3 is made of aluminum alloy, magnesium aluminum alloy, stainless steel and other materials, the counterweight body 5 can be made of galvanized cast iron, surface treated ordinary steel, lead and other materials with high density and low price, and the height of the counterweight body 5 is smaller than the height of the gate body 3. The third way is that the counterweight body 5 is composed of a counterweight body 5 bearing platform and a counterweight object, the bearing platform is made of aluminum alloy, magnesium aluminum alloy, stainless steel and other materials, and retains a certain basic weight; the counterweight object is made of cast iron, ordinary steel, lead block with high density and low price, cast or forged into a rectangular counterweight object with different weight specifications, and its width can match the bearing platform, so as to facilitate manual handling, and the counterweight can be carried out according to the actual weight of the gate body 3. The number of counterweight objects can be one or more, and the weight of the counterweight body 5 can be increased or decreased according to the actual needs of the project.

[0047] Specifically, when the power mechanism drives the rotating shaft 42 to rotate in the positive direction, the balance between the gate and the counterweight body 5 is broken, the gate moves upward, and the counterweight body 5 is driven downward by the steel cable 46; when the power mechanism drives the rotating shaft 42 to rotate in the reverse direction, the gate body 3 moves downward, and correspondingly, the steel cable 46 drives the counterweight body 5 to move upward. In some feasible implementation schemes, a first low-position limit block 83, a first high-position limit block 81, and a second high-position limit block 82 can also be provided on the left and right columns 12. The first low-position limit block 83 and the first high-position limit block 81 are provided on the counterweight chute 121, and the second high-position limit block 82 is provided on the gate chute 122. When the gate body 3 moves upward to the second high-position limit block 82, the gate is in a fully open state. The counterweight body 5 is at the lowest position, which can be limited by a first low position limit block 83 . The counterweight body 5 also has a first high position limit block 81 . When the gate is fully closed, the counterweight body 5 must not go over the first high position limit block 81 .

[0048] When the moment of the gravity of the gate body 3 on the rotating shaft 42 is equal to the moment of the gravity of the counterweight 5 on the rotating shaft 42, the rotating mechanism and the rotating shaft 42 are in a moment balance state, and the upward pulling force of the steel cable 46 on the gate body 3 on one side of the rotating mechanism is equal to the gravity of the gate body 3; the pulling force of the steel cable 46 on the counterweight 5 on the other side of the rotating mechanism is equal to the gravity of the counterweight 5. Although the magnitudes of these two forces may not be equal, the force balance of the gate body 3 and the counterweight 5 is achieved. When the weight of the counterweight 5 is equal to the weight of the gate body 3, the magnitudes of these two forces are equal. Since the gravity of the gate body 3 and the gravity of the counterweight 5 are both borne by the rotating shaft 42, during the starting, running and braking stages of the gate lifting process, the power mechanism is no longer required to overcome the huge gravity of the gate body 3, nor is it required to overcome the gravity of the gate body 3 and the counterweight 5 to perform work; the power mechanism only needs to provide a smaller driving force during the starting stage of the gate body 3 to overcome the friction of each link and allow the gate body 3 and the counterweight 5 to obtain a certain initial upward velocity. During the running stage of the gate body 3, it only needs to overcome the friction of each link to maintain the gate body 3 and the counterweight 5 rising at a certain speed. During the braking stage of the gate body 3, a smaller buffering force is provided to cooperate with the friction of each link as resistance to quickly brake the gate.

[0049] During the starting, running and braking stages of the gate closing process, the power mechanism no longer needs to overcome the huge buffering force of the gate body 3. The power mechanism only needs to provide a smaller driving force during the starting stage of the gate body 3 to overcome the friction of each link and make the gate body 3 and the counterweight body 5 obtain a certain downward initial velocity. During the running stage of the gate body 3, it only needs to overcome the friction of each link to maintain the descent of the gate body 3 and the counterweight body 5 at a certain speed. During the braking stage of the gate body 3, a smaller buffering force is provided to cooperate with the friction of each link as resistance, so that the gate is braked quickly, easily avoiding possible stalling during the descent of the gate body 3 and causing accidents.

[0050] In practical applications, the diameters of the first rope winder 411 and the second rope winder 412 can be equal or unequal, as long as the following conditions are met: radius of the first rope winder * weight of the gate body connected to the first rope winder = radius of the second rope winder * weight of the counterweight connected to the second rope winder, the best energy-saving effect can be achieved; in actual production, the opening space of the gate cannot be limited just for energy saving. Therefore, when the weight of the gate body 3 and the lifting space of the gate are determined, the weight of the counterweight 5 and the radius of the rope winder connected to the counterweight 5 should be determined in combination with the lifting space of the counterweight 5. The selection can be made according to the following conditions: the maximum height that the gate body can be lifted (lowered) * the weight of the gate body = the maximum height that the counterweight body can be lowered (lifted) * the weight of the counterweight body; according to this condition, the minimum weight of the counterweight body 5 can be estimated. In actual design, the weight of the counterweight body 5 should be greater than the minimum weight. After determining the weight of the counterweight body 5, the radius ratio of the first rope winder 411 and the second rope winder 412 can be estimated according to the above conditions; in actual operation, it is necessary to determine the maximum height that the counterweight body 5 can be lowered (lifted) and the weight of the counterweight body 5 in combination with actual conditions, and it is not necessary to take extreme values. The rope winder diameter ratio needs to be selected according to the actual installation environment: in the case where the lifting height space of the counterweight body 5 is limited and the width space is relatively loose, the weight of the counterweight body 5 can be made greater than the weight of the gate, and the diameter of the rope winder connected to the counterweight body 5 can be reduced by the same period of time, which can also achieve the effect of balancing the forces of the two heavy objects, balancing the torque of the rotating shaft 42, and keeping the sum of the gravitational potential energy of the heavy objects connected by the two rope winders unchanged. When the space for lifting the counterweight 5 is ample but the width space is relatively limited, the height of the counterweight 5 can be increased to make the weight of the counterweight 5 equal to the weight of the gate, or the weight of the counterweight 5 can be reduced to make it less than the weight of the gate. By increasing the diameter of the rope winder connecting the counterweight 5 according to the above-mentioned ratio conditions, the effect of balanced forces on the two weights, balanced torque on the rotating shaft 42 and the sum of the gravitational potential energies of the weights connected by the two rope winders can be achieved.

[0051] During the rising and falling process of the gate body 3, as well as during the starting and braking process of the gate body 3, the output of the power mechanism is mainly used to overcome the friction of each link and to give the gate body 3, the counterweight 5 and the rotating shaft 42 a small amount of kinetic energy. Compared with the gravitational potential energy of the two, the kinetic energy of the gate and the counterweight 5 can be ignored. After adding the counterweight 5, the overall mass increases, and the extra energy consumed during the startup process to accelerate to the initial velocity, that is, the kinetic energy of the counterweight 5, can be ignored. It can be seen that in each link of the gate's starting, rising, falling, and braking, the sum of the gravitational potential energy of the counterweight 5 and the gate remains unchanged. If there is no special acceleration, the gate and the counterweight 5 are always in a state of equilibrium. To lift the gate, the power mechanism only needs to provide a very small torque to break the balance between the gate body 3 and the counterweight 5 and give the gate body 3 and the counterweight 5 a certain initial velocity. Then the power mechanism only needs to overcome the friction of each link to keep the gate body 3 rising at a certain speed. To close the gate, the power mechanism only needs to apply a very small torque to break the balance between the gate body 3 and the counterweight 5, giving the gate body 3 and the counterweight 5 a certain initial velocity. Then the power mechanism only needs to overcome the friction of each link to keep the gate descending at a certain speed; during the rising process of the gate, the power mechanism no longer overcomes the gate gravity to do work like the previous solution; when the gate is braked down, the power mechanism no longer needs to resist the huge gravity buffer force of the gate. Since the gravitational potential energy of the counterweight 5 and the gravitational potential energy of the gate are mutually converted, the purpose of reducing the energy consumption of the power mechanism during the opening and closing of the gate is achieved.

[0052] In some feasible implementations, the counterweight 5 can be composed of a counterweight 5 bearing platform or a counterweight object, and the number of counterweight objects can be one or more. From the perspective of torque, when the condition: the torque of the gate body's gravity on the rotating shaft = the torque of the counterweight's gravity on the rotating shaft is met, the torque of the gate body 3's gravity on the rotating shaft 42 and the torque of the counterweight 5's gravity on the rotating shaft 42 are equal in magnitude, opposite in direction, and offset each other, the rotating shaft 42 is in a state of torque balance, and the energy saving effect of opening and closing the gate is optimal. In actual cases, due to the influence of various factors, the weight of the counterweight 5 is difficult to control accurately, so the total weight of the counterweight 5 can be flexibly configured according to actual conditions. On the counterweight 5 bearing platform, a small amount of counterweight objects can be added for adjustment.

[0053] The following is a simplified estimate of the actual energy consumption of the gate opening and closing before and after the counterweight energy-saving solution is adopted. Because after the counterweight energy-saving solution is adopted, the load of the power mechanism is increased and reduced, and the internal friction is reduced by the same factor; and the friction between the rope winder added in this solution and the steel cable 46 is rolling friction, and the friction force can be ignored, so the calculation process ignores the work done by friction.

[0054] The energy consumption and friction force before and after adopting this counterweight energy-saving solution are theoretically compared and calculated as follows: Pre-conditions: Gate weight: m=1000Kg, accelerate it to v=2mm / s (the opening and closing speed of gates on the market is 1mm / s to 1.5mm / s), lifting height: 5m.

[0055] Calculation formula A: Calculation of energy consumption required without using this counterweight energy-saving solution: When this counterweight energy-saving solution is not adopted, the minimum energy consumption required is the sum of the kinetic energy E of the gate body when the gate body 3 is raised to the target height and the increased gravitational potential energy P. The minimum energy required to accelerate the gate from rest to v=2mm / s is the kinetic energy E of the gate body, which is calculated as follows: v=2mm / s=0.002m / s E=1 / 2*m*v²=1 / 2*1000Kg*0.002m / s*0.002m / s=0.002J (Joule) The increased gravitational potential energy P of the gate body is calculated as follows: P = mgh = 1000Kg * 9.8N / Kg * 5m = 49000J = 49kJ (kilojoules), Ignoring the work done by friction, the total energy consumption required is E+P=49000J+0.002J=49000.002J.

[0056] Calculation formula B: Calculation of energy consumption required after adopting this counterweight energy-saving solution: The minimum energy consumption required is the sum of the kinetic energy E of the counterweight 5 and the gate body 3 and the increased gravitational potential energy P of the counterweight 5 and the gate body 3 when the gate body 3 is raised to the target height, which are calculated as follows: (Assume that the gate body 3 and the counterweight 5 have the same weight) When the counterweight energy-saving solution is not adopted, only the gate moves. After the counterweight energy-saving solution is adopted, the counterweight body 5 and the gate move at equal and opposite speeds, and their kinetic energies are: E gate = 1 / 2 * m * v² = 1 / 2 * 1000Kg * 0.002m / s * 0.002m / s = 0.002J (Joule) E weight 5 = 1 / 2 * m * v² = 1 / 2 * 1000Kg * (-0.002m / s) * (-0.002m / s) = 0.002J (Joule) The total kinetic energy is: E = E gate + E counterweight 5 = 0.002 J (joule) + 0.002 J (joule) = 0.004 J (joule), The total increase in kinetic energy is: E = E gate + E counterweight 5 = 0.004 J + 0 = 0.004 J, The gravitational potential energy added by the gate body 3 is: P gate = mgh = 1000Kg * 9.8N / Kg * 5m = 49000J = 49kJ (kilojoules), The gravitational potential energy of the counterweight 5 is increased by -5m when the counterweight 5 descends. P counterweight = mgh = 1000Kg * 9.8N / Kg * (-5m) = -49000J = -49kJ (kilojoules), The sum of the gravitational potential energy of the gate and the counterweight 5 combined after the gate is raised by 5m is: P=Pgate+Pcounterweight5=49000J+(-49000J)=0J.

[0057] It can be seen that after adopting the counterweight energy-saving solution, lifting the gate only requires very little energy consumption from the power mechanism.

[0058] Calculation formula C: Before and after the counterweight energy-saving solution is adopted, the torque that the power mechanism needs to provide to the rotating shaft 42 when the gate is opened and closed is calculated as follows: (Assuming that the radius of the rotating shaft is r=0.05m, ignoring the rotational inertia and friction of the rotating mechanism itself) The moment of inertia of the combination composed of the gate body 3 connected to the rotating shaft 42 through the steel cable 46 around the rotating shaft 42 is: J=m gate*r², The gate body 3 is accelerated upward at an acceleration of 1 mm / s² and stops accelerating after 2 seconds. The torque that the power mechanism needs to provide to the rotating shaft is calculated as follows: 1mm / s²=0.001m / s², The gate body accelerates upward at an acceleration of 1mm / s², so the angular acceleration of the rotation axis with a radius of r is: α=(0.001m / s²) / 0.05m=0.02rad / s², When this counterweight energy-saving solution is not adopted, the torque M that the power mechanism needs to provide satisfies: M-mg*r=J*α (g is the acceleration due to gravity), M=J*α+mg*r, M=1000Kg*0.05m*0.05m*0.02rad / s²+1000kg*9.8N / kg*0.05m, M=0.05N*m+490N*m=490.05N*m (Nm), After adopting this counterweight energy-saving solution, the torque M that the power mechanism needs to provide satisfies (assuming that the weight of the counterweight body 5 and the gate are equal, and the length of the lever arm of the counterweight body 5 is equal to the length of the lever arm of the gate): J gate = m gate * r², J weight 5 = m weight 5 * r², M=J gate*α gate+J counterweight*α counterweight (g is the acceleration due to gravity, α gate and α counterweight are equal in magnitude and opposite in direction, J gate=J counterweight), M=J gate*(α gate+α counterweight) M=J gate*0rad / s², M=0N*m (Newton meter), From this calculation, it can be seen that the counterweight energy-saving solution proposed in the present invention greatly reduces the torque requirement of the power mechanism during the opening and closing process of the gate.

[0059] From the calculation of the energy consumption and torque required for opening and closing the front and rear gates using the above counterweight energy-saving scheme, it can be seen that after adopting the counterweight energy-saving scheme, not only the opening and closing torque required for opening and closing the gate is greatly reduced, but also the energy consumption required is greatly reduced. Through theoretical calculations, it can be seen that after adopting the counterweight energy-saving scheme, ignoring the friction force, the gate opening and closing only needs to give the gate body 3 and the counterweight body 5 a small driving force. After overcoming the friction force and giving the gate and the counterweight body 5 a certain initial velocity, the power mechanism only needs to overcome the friction of each link to keep the gate from rising and falling at a certain speed. Since the gate and the counterweight body 5 have extremely small lifting speeds when they are working, the kinetic energy is extremely small. When the friction force is ignored, the energy consumption required for opening and closing the gate is close to zero.

[0060] Furthermore, the weight and arm length of the counterweight 5 and the gate body 3 can achieve the best energy-saving effect when the following conditions are met: (I) Gate body weight * gate body force arm = counterweight body weight * counterweight body force arm, that is: the moment of the gate body weight on the rotating axis = the moment of the counterweight body weight on the rotating axis; when this equation is satisfied, it can be inferred that: 1. The gate body can be lifted (lowered) height * gate body weight = counterweight can be lowered (lifted) height * counterweight weight 2. Gate body lifting (lowering) speed * Gate body weight = Counterweight body lowering (lifting) speed * Counterweight body weight Furthermore, the weight range of the counterweight can be calculated according to the following conditions: (ii) Gate body lever arm length: gate body maximum lifting height = counterweight lever arm length: counterweight maximum lifting height; The arm length includes: for the case where the counterweight body 5 and the gate body 3 are connected to the steel cable 46 through a rope winder, the arm length of the gate body 3 is the radius of the rope winder connecting the gate body 3, and the arm length of the counterweight body 5 is the radius of the rope winder connecting the counterweight body 5; for the case where the counterweight body 5 and the gate body 3 are connected by a steel cable 46 fixed at one end on the rotating shaft 42, the arm length of the gate body 3 is the radius of the circular cross-section of the rotating shaft 42 where the steel cable 46 connecting the gate body 3 is fixed, and the arm length of the counterweight body 5 is the radius of the circular cross-section of the rotating shaft 42 where the steel cable 46 connecting the counterweight body 5 is fixed; In the case where the counterweight 5 and the gate body 3 are connected directly to the steel cable 46 wound around the rotating shaft 42, the arm length of the gate body 3 and the arm length of the counterweight 5 are equal, both being the radius of the circular cross section of the rotating shaft 42 where the steel cable 46 is wound.

[0061] In the calculation scheme provided by the present invention, the arm length of the counterweight body 5 is equal to the arm length of the gate, and the weight of the counterweight body 5 is equal to the weight of the gate. Therefore, the moment of the gravity of the counterweight body 5 on the rotating shaft 42 is equal to the moment of the gravity of the gate body 3 on the rotating shaft 42, which is the best feasible scheme.

[0062] In some feasible implementations, a counterweight chute 121 and a gate chute 122 are provided on the left and right columns 12 of the gate frame. Furthermore, the length of the counterweight chute 121 is greater than or equal to the sum of the height of the gate body 3 and the height of the counterweight body 5. The two ends of the counterweight body 5 are placed in the counterweight chute 121 to slide up and down, and the counterweight chute 121 plays a guiding and sliding role for the counterweight body 5. In some feasible implementations, a water stop strip can also be provided in the gate chute 122, and the two ends of the gate body 3 are placed in the gate chute 122 to slide up and down; the gate chute 122 not only guides the gate body 3 but also has a water stop effect.

[0063] Further, a guide wheel 45 is provided between the inner side of the counterweight chute 121 and the counterweight body 5. The guide wheel 45 can be provided inside the counterweight chute 121, and after the two ends of the counterweight body 5 are placed in the counterweight chute 121, the guide wheel 45 contacts the front and rear sides of the counterweight body 5. The guide wheel 45 can be provided on the counterweight body 5, and after the two ends of the counterweight body 5 are placed in the counterweight chute 121, the guide wheel 45 contacts the inner side of the counterweight chute 121. When there is a gap between the gate body 3 and the counterweight body 5, that is, when the distance between the thickness center of the gate body 3 and the thickness center of the counterweight body 5 is greater than the diameter of the fixed pulley, or when the distance between the thickness center of the gate and the thickness center of the counterweight body 5 does not match the pulley diameter, the gap between the gate body 3 and the counterweight body 5 can also be adjusted by adjusting the guide wheel 45. The guide wheel 45 can prevent the counterweight body 5 from detaching from the counterweight chute 121 when sliding back and forth in the counterweight chute 121, thereby avoiding the occurrence of safety accidents.

[0064] For some possible implementations, please continue to refer to Figure 1 , Figure 2 , a steering device 7 is connected to the driving motor 6, and the steering device 7 is fixed on the gate frame. The steering device 7 includes a first bevel gear 73 and a second bevel gear 74. The first bevel gear 73 and the second bevel gear 74 are a pair of bevel gear sets meshing with each other. The bevel gear sets are respectively connected with a first steering shaft 72 and a second steering shaft 71. The first steering shaft 72 and the second steering shaft 71 form a 90-degree angle. The first steering shaft 72 passes through the coupling 62 reducer worm shaft 91 and is coaxial with the power shaft of the driving motor 6. The second steering shaft 71 faces outward and is connected to the bayonet of the manual crank 75. The bayonet of the manual crank 75 can be connected to the manual crank 75. The manual crank 75 is a portable crank, which can be installed when used and removed after use. When it is necessary to manually open and close the gate, first unlock the control motor, install the manual crank 75 on the bayonet of the manual crank 75, and then the gate can be opened and closed by manpower instead of the motor.

[0065] Furthermore, in some feasible implementations, it is impossible to ensure that the moment of force exerted by the gravity of the counterweight 5 on the rotating shaft 42 is equal to the moment of force exerted by the gravity of the gate body 3 on the rotating shaft 42. In this case, the analysis can be divided into two cases: (i) when the moment of force exerted by the gravity of the counterweight 5 on the rotating shaft 42 is less than the moment of force exerted by the gravity of the gate body 3 on the rotating shaft 42, from the perspective of force, the gravity exerted on the counterweight 5 is converted into a pulling force for lifting the gate through the rotating shaft 42. This pulling force is less than the gravity of the gate and cannot lift the gate; the gravity exerted on the gate is converted into an upward pulling force on the counterweight 5 through the rotating shaft 42. This pulling force is greater than the gravity of the counterweight 5. If there is no The power mechanism intervenes and the counterweight 5 will be lifted to the highest position; from the force torque analysis of the rotating shaft 42, in this case, since the gate body 3 and the counterweight 5 are both unbalanced, the power mechanism needs to provide a supplementary torque on the counterweight 5 side, so that the torque of the rotating shaft 42 is balanced, and the force balance of the counterweight 5 and the gate body 3 can be achieved; the torque that the power mechanism needs to supplement is: the torque of the gate body 3 gravity on the rotating shaft 42 - the torque of the counterweight 5 gravity on the rotating shaft 42, which is obviously smaller than the torque that the power mechanism needs to overcome when there is no counterweight 5, thus partially saving the torque required by the power mechanism. Analyzed from the perspective of energy conversion and work done by the power mechanism, in this case, the potential energy of the counterweight 5 is not enough to lift the gate body to the following height, which can be obtained according to the formula: The gate body can be lifted to a height * the gate body weight = the counterweight can be lowered to a height * the counterweight weight. The calculated gate body lifting height requires the power mechanism to supplement some energy. The minimum energy supplemented by the power mechanism is calculated as follows: Assuming that the power mechanism needs to rotate N (N>0) turns when lifting the gate, the power mechanism does work W on the gate body: W = (the moment of gravity of gate body 3 on the rotation axis - the moment of gravity of counterweight on the rotation axis) * N * 2π, which is obviously greater than 0.

[0066] Obviously: W < the moment of the gate body's gravity on the rotation axis * N * 2π; Therefore, when the torque of the counterweight weight on the rotating shaft is less than the torque of the gate body weight on the rotating shaft, the counterweight energy-saving gate does not achieve the optimal torque saving and energy-saving effect, but compared with the case without counterweight energy saving, it reduces the torque demand and energy consumption demand for the power mechanism.

[0067] (ii) When the moment of the weight of the counterweight on the rotating axis > the moment of the weight of the gate body on the rotating axis and the moment of the weight of the counterweight on the rotating axis < 2*the moment of the weight of the gate body on the rotating axis, it is equivalent to adding a moment of the gate body 3 on the rotating axis 42 on the side of the counterweight 5 on the basis of the weight of the counterweight * the length of the force arm of the counterweight > the weight of the gate body * the length of the force arm of the gate body. Therefore, the moment of the gate body 3 on the rotating axis 42 on the gate side is offset, and only the torque of the original counterweight 5 remains. In this case, from the perspective of force, the gravity of the counterweight 5 is converted into a pulling force for lifting the gate through the rotating shaft 42, and the pulling force is greater than the gravity of the gate; the gravity of the gate is converted into an upward pulling force on the counterweight 5 through the rotating shaft 42, and the pulling force is less than the gravity of the counterweight 5. If there is no power mechanism intervention, the gate body 3 will be lifted to the highest position; from the force torque analysis of the rotating shaft 42, in this case, since the gate body 3 and the counterweight 5 are both unbalanced, the power mechanism needs to provide a unidirectional torque on the gate side, so that the torque of the counterweight gravity on the rotating shaft = the gate The torque of the body weight on the rotating shaft, that is, the force balance of the counterweight body 5 and the gate body 3 is achieved, and the rotating shaft 42 also achieves torque balance; the torque size that the power mechanism needs to supplement is: the torque of the counterweight weight on the rotating shaft-the torque of the gate body weight on the rotating shaft. Since the torque of the counterweight weight on the rotating shaft>the torque of the gate body weight on the rotating shaft and the torque of the counterweight weight on the rotating shaft<2*the torque of the gate body weight on the rotating shaft, the required supplementary torque of the power mechanism is less than the torque of the gate body 3 gravity on the rotating shaft 42, so the torque required by the power mechanism is partially saved. In this case, when the gate is closed, the power mechanism needs to supplement the torque to lift the counterweight body 5. This supplementary torque is less than the torque required to lift the gate body 3 without the counterweight body 5, so the torque required by the power mechanism is partially saved. The torque work of the power mechanism is the same as when the total torque of the counterweight body 5 gravity on the rotating shaft <the torque of the gate body weight on the rotating shaft, and it will not be repeated. When the gate is opened, the gravitational potential energy provided by the counterweight 5 is greater than the gravitational potential energy required for lifting the gate body 3. The lifting force provided by the counterweight 5 is greater than the gravity of the gate body 3. The power mechanism is required to provide additional buffering force to balance the excess lifting force, so it should be avoided as much as possible.

[0068] Based on the above analysis, when the gate body weight*gate body force arm length < counterweight body weight*counterweight body force arm length < 2*gate body weight*gate body force arm length, this counterweight energy-saving scheme can achieve energy-saving effects; when the gate body weight*gate body force arm length = counterweight body weight*counterweight body force arm length, the counterweight energy-saving effect is optimal.

[0069] The counterweight energy-saving steel cable 46 of the present invention drives the gate. When the torque of the gravity of the counterweight body 5 on the rotating shaft 42 is equal to the torque of the gravity of the gate body 3 on the rotating shaft 42, the counterweight body 5 and the gate body 3 achieve force balance, and the rotating shaft 42 achieves torque balance. The counterweight body 5 cooperates with the rising or falling of the gate to provide the gate body 3 with an upward pulling force or a downward buffering force, and at the same time stores the gravitational potential energy released during the descent process of the gate body 3 or provides gravitational potential energy for the rising process of the gate body 3. The combination of the gate body 3 and the counterweight body 5 realizes the conservation of gravitational potential energy during the lifting and lowering process of the gate body 3. Since the gravity of the gate body 3 and the gravity of the counterweight 5 are both borne by the rotating shaft 42, during the starting, running and braking stages of the gate opening and closing process, the power mechanism is no longer required to overcome the huge gravity or buffering force of the gate body 3, nor is it required to overcome the gravity of the gate body 3 and the counterweight 5 to do work; the power mechanism only needs to provide a smaller driving force during the starting stage of the gate body 3 to overcome the friction of each link and allow the gate body 3 and the counterweight 5 to obtain a certain initial velocity; during the running stage of the gate body 3, it only needs to overcome the friction of each link to maintain the lifting and lowering of the gate body 3 and the counterweight 5 at a certain speed; during the braking stage of the gate body 3, a smaller buffering force is provided to cooperate with the friction of each link as resistance, so that the gate is braked quickly, easily avoiding possible stalling during the descent of the gate body 3 and causing accidents. Since the power mechanism is not required to overcome the gravity of the gate body 3 and the counterweight 5, the driving force and energy consumption requirements of the gate are greatly reduced, thereby reducing the energy consumption demand of the power mechanism during the opening and closing of the gate, potentially increasing the standby time of the power mechanism, and greatly reducing the physical energy consumption of manually lifting and lowering the gate, thereby increasing the manual cranking speed.

[0070] In addition, when it cannot be guaranteed that the torque of the gravity of the counterweight 5 on the rotating shaft 42 is equal to the torque of the gravity of the gate body 3 on the rotating shaft 42, as long as it can be guaranteed that the torque of the gravity of the counterweight 5 on the rotating shaft 42 is less than twice the torque of the gravity of the gate body 3 on the rotating shaft 42, the energy-saving effect can still be achieved. Of course, the smaller the difference between the torque of the gravity of the counterweight 5 on the rotating shaft 42 and the torque of the gravity of the gate body 3 on the rotating shaft 42, the better the energy-saving effect.

[0071] The protection scope of the present invention is not limited to the above embodiments, and all technical solutions under the inventive concept belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A counterweight energy-saving steel cable driven gate, comprising a gate body and a gate frame, wherein the gate frame comprises left and right columns, It is characterized in that It also includes a counterweight body and a rotating mechanism; the height dimension of the counterweight body is smaller than the height dimension of the gate, and the rotating mechanism includes a rotating shaft, on which a first steel cable segment and a second steel cable segment are wound, and the ends of the first steel cable segment and the second steel cable segment are respectively connected to the gate body and the counterweight body, and the winding directions of the first steel cable segment and the second steel cable segment on the rotating shaft are opposite, and the rotating mechanism drives the gate body and the counterweight body to rise and fall relative to each other, and there is a gap between the gate body and the counterweight body that are lifted and lowered.

2. A counterweight energy-saving cable-driven gate according to claim 1, It is characterized in that A rope winder is also provided on the rotating shaft, and the rope winder includes a first rope winder and a second rope winder. The rope winders are fixed on the rotating shaft, the first steel cable segment is wound around the first rope winder, and the second steel cable segment is wound around the second rope winder. The winding direction of the first steel cable segment on the first rope winder is opposite to the winding direction of the second steel cable segment on the second rope winder.

3. A counterweight energy-saving cable-driven gate according to claim 1, It is characterized in that The rope winder is slidable in the axial direction of the rotating shaft.

4. A counterweight energy-saving cable-driven gate according to claim 1, It is characterized in that The left and right columns of the gate frame are provided with a counterweight slide groove and a gate slide groove, the two ends of the counterweight body are placed in the counterweight slide groove to slide up and down, and the two ends of the gate body are placed in the gate slide groove to slide up and down.

5. A counterweight energy-saving cable-driven gate according to claim 3, It is characterized in that A guide wheel is arranged between the inner side of the counterweight slide groove and the counterweight body.

6. A counterweight energy-saving cable-driven gate according to claim 1, It is characterized in that A first low-position limit block, a first high-position limit block and a second high-position limit block are also arranged on the left and right columns. The first low-position limit block and the first high-position limit block are arranged on the counterweight chute, and the second high-position limit block is arranged on the gate chute.

7. A counterweight energy-saving cable-driven gate according to claim 1, It is characterized in that It also includes a power mechanism, which includes a drive motor.

8. A counterweight energy-saving cable-driven gate according to claim 7, It is characterized in that The power mechanism includes a speed reducer.

9. A counterweight energy-saving cable-driven gate according to claim 8, It is characterized in that The power mechanism is connected to a steering device, and inside the steering device is a pair of mutually meshing bevel gear sets, and the bevel gear sets are respectively connected to a first steering shaft and a second steering shaft, and an angle of 90 degrees is formed between the first steering shaft and the second steering shaft. The first steering shaft is connected to the reducer worm shaft through a coupling, and the second steering shaft faces outward and is connected to the manual crank bayonet, and the manual crank bayonet is connected to the manual crank.

10. A counterweight energy-saving cable-driven gate according to claim 1, It is characterized in that An artificial crank is installed at the end of the rotating shaft.

11. A counterweight energy-saving cable-driven gate according to claim 4, It is characterized in that The length of the counterweight chute is greater than or equal to the sum of the lifting height of the gate body and the height of the counterweight body.

12. A counterweight energy-saving cable-driven gate according to claim 1, It is characterized in that The counterweight body is composed of a counterweight body bearing platform and a counterweight object, and the number of the counterweight object is at least one.

13. A counterweight energy-saving gate according to claim 1, It is characterized in that The relationship between the gate body and the counterweight should satisfy: the weight of the counterweight * the length of the counterweight arm < 2 * the weight of the gate body * the length of the gate arm, where the length of the counterweight arm is the distance from the center line of the rotating shaft to the line of action of the counterweight's weight; the length of the gate body arm is the distance from the center line of the rotating shaft to the line of action of the gate body's weight.

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