CN220318469U

CN220318469U - Counterweight energy-saving steel cable driving gate

Info

Publication number: CN220318469U
Application number: CN202321535459.2U
Authority: CN
Inventors: 白思稼; 高巧
Original assignee: Shaanxi Huaji Smart Technology Co ltd
Current assignee: Shaanxi Huaji Smart Technology Co ltd
Priority date: 2023-06-16
Filing date: 2023-06-16
Publication date: 2024-01-09
Anticipated expiration: 2033-06-16

Abstract

The utility model discloses a counterweight energy-saving steel cable driving gate, which comprises a gate body, a gate door frame, a counterweight body and a rotating mechanism, wherein the gate door frame comprises a left upright post and a right upright post, the height dimension of the counterweight body is smaller than that of a gate, the rotating mechanism comprises a rotating shaft, 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 respectively connected with the gate body and the counterweight body, the winding directions of the first steel cable section and the second steel cable section on the rotating shaft are opposite, and the rotating mechanism drives the gate body and the counterweight body to relatively lift up and down, and a gap exists between the gate body and the counterweight body which relatively lift up and down. The balance weight and the gate in the utility model can realize the opening and closing of the gate by the combination of the rope winder and the rotating shaft and only by providing a small driving force by the power mechanism to drive the gate to give an initial speed, thereby achieving the aim of saving energy consumption.

Description

Counterweight energy-saving steel cable driving gate

Technical Field

The utility model relates to the field of hydraulic engineering, in particular to a counterweight energy-saving steel rope 462 driving gate.

Background

A gate for hydraulic engineering is a control device for closing and opening the water discharge channel, and can be used for intercepting water flow, controlling water level, regulating flow, discharging sediment and floating objects. Currently used gates are generally hoisted by a steel rope or relatively rotated by a screw rod to drive the gate to perform ascending or descending reciprocating motion. In the case of the steel cable driving type gate, a motor drives a rotating shaft of a rotating mechanism to rotate, and when the rotating shaft rotates, a steel cable fixed on the rotating shaft is wound or released on the rotating shaft, so that the length of the steel cable between the rotating shaft and a gate body is shortened or prolonged, and the gate is lifted or closed. In the process, the motor drives the rotating shaft of the rotating mechanism to rotate, when the gate is lifted, the motor rotates positively to drive the rotating shaft to rotate positively, the length of a steel cable wound on the rotating shaft is increased, the steel cable between the gate and the rotating shaft is shortened, the gate is lifted, and the power mechanism needs to overcome the whole gravity of the gate to apply work so as to lift the gate; when the gate descends, the motor reversely rotates, the length of the steel cable wound on the rotating shaft is reduced, the steel cable between the gate and the rotating shaft is prolonged, the gate descends at a certain speed under the condition that the buffer moment provided by the motor is balanced with the gravity moment of the gate, and in the descending process, the motor needs to provide the buffer moment to resist the gravity moment of the gate so as to enable the gate to keep a certain speed to descend, otherwise, the gate can impact the bottom frame due to the descending of stall, and accidents are caused. Because the cost of the motor for recovering energy is too high at present, gravitational potential energy released in the process of lowering the gate is wasted. For environments with abundant power environments, the energy consumption for opening and closing the gate is not an outstanding problem, but for the field with relatively short power supply, such as in the power supply environment using solar energy or a storage battery, the power is particularly precious, and the saving of the power means that the gate operates normally or works for a longer time. Therefore, in an environment where power supply is relatively short, a gate capable of saving energy is required to be closed and opened to perform water stopping and draining operations.

Disclosure of Invention

The utility model aims to provide a counterweight energy-saving steel cable driven gate, wherein a counterweight body is arranged on the gate, the gate body and the counterweight body are respectively connected through steel cables provided on one side of a rotating shaft, the counterweight body and the gate body realize stress balance, the rotating shaft realizes moment balance, the counterweight body is matched with the ascending or descending of the gate to provide ascending tension or descending buffer force for the gate body, each link of the gate work does not need a power mechanism to overcome huge gravity or buffer force of the gate to keep balance, and does not need the power mechanism to overcome gravity acted by the gate body and the counterweight body to do work, so that the driving force requirement and the energy consumption requirement of the gate are greatly reduced, and the purposes of reducing the driving force and the energy consumption are achieved.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: a counterweight energy-saving steel rope driving gate comprises a gate body, a gate door frame, a counterweight body and a rotating mechanism, wherein the gate door frame comprises a left upright post and a right upright post; the height dimension of the counterweight body is smaller than that of the gate, the rotating mechanism comprises a rotating shaft, a first steel rope section and a second steel rope section are wound on the rotating shaft, the ends of the first steel rope section and the second steel rope section are respectively connected with the gate body and the counterweight body, the winding directions of the first steel rope section and the second steel rope section on the rotating shaft are opposite, the rotating mechanism drives the gate body and the counterweight body to relatively lift up and down, and a gap exists between the gate body and the counterweight body which lift up and down.

In some possible embodiments, a rope winder is further provided on the rotating shaft, the rope winder including a first rope winder, a second rope winder, the rope winder being fixed on the rotating shaft, the first wire rope segment being wound on the first rope winder, the second wire rope segment being wound on the second rope winder, the first wire rope segment being wound on the first rope winder in a direction opposite to the direction of winding the second wire rope segment on the second rope winder.

Further, the rope winder is slidable in the axial direction of the rotation shaft.

In some possible embodiments, the left upright post and the right upright post of the gate frame are provided with a counterweight chute and a gate chute, two ends of the counterweight body are arranged in the counterweight chute to slide up and down, and two ends of the gate body are arranged in the gate chute to slide up and down.

In some possible embodiments, a guide wheel 45 is provided between the inside of the counterweight chute and the counterweight body.

Preferably, the left upright post and the right upright post are further provided with a first low-position limiting block, a first high-position limiting block and a second high-position limiting block, the first low-position limiting block and the first high-position limiting block are arranged on the counterweight sliding groove, and the second high-position limiting block is arranged on the gate sliding groove.

In some possible embodiments, a power mechanism is also included, the power mechanism including a drive motor. In some possible embodiments, the power mechanism may further include a speed reducer.

In some possible embodiments, the power mechanism is connected with a steering device, a pair of bevel gear sets meshed with each other are arranged in the steering device, the bevel gear sets are respectively connected with a first steering shaft and a second steering shaft, an angle of 90 degrees is formed between the first steering shaft and the second steering shaft, the first steering shaft is connected with a worm shaft of a speed reducer through a coupling, the front surface of the second steering shaft is outwards connected with a manual crank bayonet, and the manual crank bayonet is connected with a manual crank.

In some possible embodiments, a manual crank is mounted at the end of the rotating shaft.

Preferably, the length of the counterweight sliding chute is greater than or equal to the sum of the lifting height of the gate body and the height of the counterweight body.

In some possible embodiments, the counterweight body is composed of a counterweight body bearing platform and a counterweight object, and the number of the counterweight objects is at least one.

Preferably, the relationship between the gate body and the counterweight body should be as follows: weight of the counterweight body weight arm length <2 weight of the gate body weight arm length, wherein the counterweight body arm length is the distance from the axis center line of the rotating shaft to the action line of the counterweight body weight; the length of the arm of force of the gate body is the distance from the axial center line of the rotating shaft to the acting line of the gravity of the gate body.

Compared with the prior art, the utility model has the advantages that:

1. the utility model relates to a counterweight energy-saving steel cable driving gate, which comprises a gate body, a power mechanism, a counterweight body and a rotating mechanism. Under the condition that the moment of the weight force of the counter weight to the rotating shaft is equal to the moment of the gravity of the gate body to the rotating shaft, the counter weight body and the gate body realize stress balance, the rotating shaft realizes moment balance, the counter weight body is matched with the rising or falling of the gate to provide rising pulling force or falling buffering force for the gate body, meanwhile, the gravitational potential energy released in the falling process of the gate body is stored or the gravitational potential energy is provided for the rising process of the gate body, and the combination of the gate body and the counter weight body realizes gravitational potential energy conservation in the rising process of the gate body. Because the gravity of the gate body and the gravity of the counterweight body are borne by the rotating shaft, the power mechanism is not required to overcome the huge gravity or buffering force of the gate body and the power mechanism is not required to overcome the gravity of the gate body and the counterweight body to do work in each stage of starting, running and braking of the gate opening and closing process; the power mechanism only needs to provide a small driving force in the starting stage of the gate body, overcomes the friction force of each link and enables the gate body and the counterweight body to obtain a certain initial speed, only needs to overcome the friction force of each link in the running stage of the gate body, maintains the lifting of the gate body and the counterweight body at a certain speed, provides a small buffering force in the braking stage of the gate body and is matched with the friction force of each link as resistance, so that the gate is rapidly braked, and possible stall in the falling process of the gate body is easily avoided to cause accidents. Because the power mechanism is not required to overcome the gravity acting on the gate body and the counterweight body, the driving force requirement and the energy consumption requirement of the gate are greatly reduced, the energy consumption requirement of the power mechanism in the opening and closing process of the gate is reduced, and the standby time of the power mechanism is potentially prolonged.

2. The counterweight energy-saving steel rope driving gate of the utility model has the advantages that the power mechanism is not needed to overcome huge gravity or buffering force of the gate in each link of the gate operation, the service life of the power mechanism is prolonged, and the manual opening and closing is more time-saving and labor-saving.

Drawings

FIG. 1 is a block diagram of the present utility model;

fig. 2 is a schematic structural view of the steering device 7 according to the present utility model.

In the figure: lintel 11, upright post 12, counterweight runner 121, gate runner 122, sill 13, drive gear 2, gate body 3, rotation shaft 42, first rope winder 411, second rope winder 412, bearing 44 seat 43, bearing 44, guide wheel 45, wire rope 46, rope guiding wheel 47, counterweight 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 stopper 81, second high-position stopper 82, first low-position stopper 83, speed reducer 9, speed reducer worm shaft 91.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances. The utility model will be further described with reference to the drawings and detailed description.

The utility model relates to a counterweight energy-saving steel cable driving gate, which comprises a gate body 3, a power mechanism, a counterweight body 5 and a rotating mechanism, wherein a gate frame is formed by encircling a door lintel 11, left and right upright posts 12 and a bottom beam 13 in general, and the power mechanism is arranged on the door lintel 11 in general. In the application, the power mechanism comprises a driving motor 6 and can further comprise a speed reducer 9, the driving motor 6 is connected with the speed reducer 9, and the rotating mechanism can be arranged on a door lintel 11. The rotation mechanism includes a rotation shaft 42, and the power mechanism drives the rotation mechanism to rotate. In some possible embodiments, see fig. 1, a drive gear 2 is provided on the rotation shaft 42, and the power shaft of the drive motor 6 is in gear engagement with the drive gear 2. Both ends of the rotation shaft 42 and the bearings 44 are fixed to the bearing 44 seat 43, and the bearing 44 seat 43 is fixed to the door lintel 11. In some possible embodiments, the rotating mechanism is provided with a first steel cable 46 section and a second steel cable 46 section wound on the rotating mechanism 42, and one end of each section of steel cable 46 is fixed with the rotating shaft 42; the two lengths of steel rope 46 are wound around the rotation shaft 42 in opposite directions, respectively, so that one steel rope 46 is provided at each side of the rotation shaft 42, one side of the rotation shaft 42 is connected to the gate, and the other side of the rotation shaft 42 is connected to the counterweight 5. In some possible embodiments, the first 46 and second 46 lengths of wire rope may be part of a single steel rope 46. The first and second lengths of wire 46, 46 may each be one or several. In general, in order to ensure that the gate and the counterweight 5 are balanced, two sections of the first wire 46 and two sections of the second wire 46 are 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 rotation shaft 42, the arm length of the counterweight 5 being the radius of the wire rope 46 connecting the counterweight 5 where the wire rope 46 connecting the gate body 3 is wound around the rotation shaft 42.

Moment=force moment arm during lifting of the gate body 3 and the counterweight body 5;

arm of force: the distance between the force acting line and the center line of the rotating shaft;

moment of gate body gravity to axis of rotation = gravity of gate body moment of arm length, wherein: assuming that a steel cable connected with the gate body is vertical, the length of a force arm of the gate body is the distance between the straight line where the steel cable is connected and the center line of the rotating shaft;

moment of weight to rotation axis = weight moment arm;

the length of the arm of the counterweight is the distance between the wire rope connecting the counterweight and the rotation axis, here assuming that the wire rope connecting the counterweight remains vertical; the rotation direction of the rotation shaft is positive when the gate is upward.

In some embodiments with low control accuracy, the steel cable 46 is directly wound around the rotating shaft 42 for several turns in the rotating mechanism, so as to prevent the steel cable 46 from slipping between the rotating shaft 42, then the two ends of the steel cable 46 are led out from two sides of the rotating shaft 42, and the winding directions of the two ends of the steel cable 46 around the rotating shaft 42 are opposite when the steel cable 46 is led out from two sides. The two ends of the steel cable 46 led out from both sides of the rotation shaft 42 are connected to the gate at one end and to the counterweight 5 at the other end, and in general, two steel cables 46 are provided to ensure balance between the gate and the counterweight 5. In this case, the length of the arm of the counterweight 5 is equal to the length of the arm of the gate arm, and is equal to the radius of the rotation shaft 42.

In some possible embodiments with high requirements on control accuracy, the rotating shaft 42 of the rotating mechanism is provided with a first rope winder 411 and a second rope winder 412, the rope winders are radially fixed on the rotating shaft 42, one ends of the first steel rope 46 section and the second steel rope 46 section are respectively fixed on the first rope winder 411 and the second rope winder 412, then the first steel rope 46 section is wound on the first rope winder 411, the second steel rope 46 section is wound on the second rope winder 412, the rope winders are respectively wound on the rope winders in opposite directions, one ends of the first steel rope 46 section are connected with a gate, and one ends of the second steel rope 46 section are connected with a counterweight 5.

When the first rope winder 411 rotates along the rotating shaft 42 in the forward direction, the number of turns of the steel cable 46 wound on the rope winder is increased, the length of the steel cable 46 between the rope winder and the gate body 3 is reduced, and the gate is lifted under the tension of the counterweight body 5; at the same time, the second rope winder 412 rotates forward along the rotation shaft 42, and the number of turns of the wire rope 46 on the second rope winder 412 decreases, the length of the wire rope 46 between the rope winder and the weight body 5 increases, and the weight body 5 descends under the action of gravity, because the winding directions of the wire rope 46 on the first rope winder 411 and the second rope winder 412 are opposite. The power mechanism drives the rotating mechanism to rotate, the rotating mechanism drives the gate body 3 and the counterweight body 5 to relatively lift up and down, and a gap exists between the gate body 3 and the counterweight body 5 which relatively lift up and down.

In general, in order to ensure that the gate body 3 and the counterweight 5 are balanced, two first rope reeving devices 411 and two second rope reeving devices 412 are provided, and two first wire rope 46 segments and two second wire rope 46 segments are provided. In this case, the arm length of the counterweight 5 is the rope winder radius of the connecting counterweight 5, and the arm length of the gate body 3 is the rope winder radius of the connecting gate body 3.

When the moment of the gravity of the counterweight body 5 to the rotating shaft 42 is equal to the moment of the gravity of the gate body 3 to the rotating shaft 42, the counterweight energy-saving effect is optimal. In some specific practices, there may be a need to consider energy saving and other factors, and the moment of gravity of the counterweight body 5 on the rotating shaft 42 cannot be equal to the moment of gravity of the gate body 3 on the rotating shaft 42, so long as the moment of gravity of the counterweight body 5 on the rotating shaft 42 is ensured to be less than twice the product of the weight of the gate body 3 and the length of the arm of force of the gate body 3, the energy saving effect can still be achieved. The rope winder rotates synchronously with the rotating shaft 42 and can slide along the axial direction of the rotating shaft 42, so that the steel rope 46 is still vertical to the rotating shaft 42 after being stressed.

The rope winding devices of different manufacturers may have slightly different structures, and some rope winding devices have fixed points at only one end, and some rope winding devices have fixed points at both ends, so that the specific rope winding mode can be flexibly set according to actual conditions, and only the gate and the counterweight body 5 respectively connected with the steel ropes 46 at both sides of the rotating shaft 42 can be kept in a safe, balanced and stable posture.

Preferably, the wire rope 46 is wound around the rotating shaft 42 by wire rope reeves, each of the wire rope reeves having the same diameter.

Preferably, the rope winder is self-sliding in the axial direction of the rotational shaft 42, ensuring that the cable 46 remains perpendicular to the rotational shaft 42 after being forced.

The steel cord 46, the first steel cord 46 segment, the second steel cord 46 segment, and the like mentioned in the present utility model are listed by purposes, and do not mean a single steel cord 46, but may be a single steel cord 46 or a part of a whole steel cord 46 in actual design practice. In the case where two or more wires are provided for each of the wires 46, the first wire 46 segment, the second wire 46, and the second wire 46 segment, different portions of one wire 46 may be used to carry different lengths of the wire 46 for different uses. For example: the first steel rope 46 wound on the first rope winder 411 and the second steel rope 46 wound on the second rope winder 412 may be one integral, and the steel rope 46 is wound on the first rope winder 411 and then wound on the second rope winder 412 in the opposite direction; the wire rope 46 may be two independent wires, which are wound around the first wire winder 411 and the second wire winder 412 in opposite directions.

In some possible embodiments, in case of a substantial gate weight, the number of wires 46 on both sides of the rotation shaft 42 may be increased by a suitable amount, and the corresponding rope winder or wire 46 connection point may be increased according to the connection of the wires 46 on the rotation shaft 42. In the case where the actual gate body 3 is small in weight, the number of the wire ropes 46 on both sides of the rotation shaft 42 can be reduced to one in the case where the safety measures are secured; in some possible embodiments, other materials of rope or chain, belt, shaft, replacement of the steel cord 46 or a portion of the steel cord 46 may be used where security measures are warranted.

The steel cables 46 at two sides of the rotating shaft 42 in the rotating mechanism are connected with the gate body 3 at one side and the counterweight body 5 at one side, and when the moment of the gravity of the gate body 3 to the rotating shaft 42 is equal to the moment of the gravity of the counterweight body 5 to the rotating shaft 42, the counterweight energy-saving gate achieves the optimal energy-saving effect.

From the analysis of stress angle, the gravity borne by the counterweight body 5 passes through the rotating shaft 42 and is converted into the pulling force for lifting the gate, the gravity borne by the gate passes through the rotating shaft 42 and is converted into the pulling force for the counterweight body 5 upwards, and under the condition that the moment of the gravity of the gate body 3 to the rotating shaft 42 is equal to the moment of the gravity of the counterweight body 5 to the rotating shaft 42, the rotating shaft 42 realizes moment balance: the upward pulling force of the gate body 3 is equal to the gravity of the gate body 3, the upward pulling force of the counterweight body 5 is equal to the gravity of the counterweight body 5, and the gate body 3 and the counterweight body 5 are respectively stressed and balanced; under the condition that the weight of the counterweight body 5 and the weight of the gate body 3 are equal, the gate is subjected to upward pulling force, and the weight of the counterweight body 5 is equal to the weight of the gate. Because the gravity of the gate body 3 and the gravity of the counterweight body 5 are both borne by the rotating shaft 42, the power mechanism is not required to overcome huge gravity or buffering force of the gate body 3 in each stage of starting, running and braking of the gate opening and closing process, the power mechanism only needs to provide a small driving force in the starting stage of the gate body 3, overcomes friction force of each link and enables the gate body 3 and the counterweight body 5 to obtain a certain initial speed, only needs to overcome friction force of each link in the running stage of the gate body 3, maintains the lifting of the gate body 3 and the counterweight body 5 at a certain speed, provides small buffering force in the braking stage of the gate body 3 and is matched with friction force of each link as resistance, so that the gate is rapidly braked, and possible stall in the descending process of the gate body 3 is easily avoided to cause impact on the bottom beam 13.

From the moment angle analysis born by the rotating shaft 42, because the warp direction of the rope winding device is relatively fixed with the rotating shaft 42, the rope winding device and the rotating shaft 42 synchronously rotate, the first rope winding device 411 connected with the gate body 3 and the second rope winding device 412 connected with the counterweight body 5 are opposite in winding direction, so that the directions of moments generated by gravity applied to the rotating shaft 42 by the gate body 3 and the counterweight body 5 are opposite, when the moment of gravity applied to the rotating shaft 42 by the gate body 3 is equal to the moment of gravity applied to the rotating shaft 42 by the counterweight body 5, the sum of the moments applied to the rotating shaft 42 is zero, the rotating shaft 42 reaches a moment balance state, the balance weight energy saving effect is optimal, a power mechanism is not needed to overcome the moment of the rotating shaft 42 by huge gravity of the gate body 3 in the starting, running and braking stages of the gate body 3, the power mechanism only needs to provide a small moment in the starting stage of the gate body 3, the friction force of each link is overcome, the friction force of each link is enabled to obtain a certain initial speed, the friction force of each link is only needed to overcome in the running stage of the gate body 3, the friction force of each link is enabled to be enabled, the moment generated by the friction force of each link is enabled to be overcome, the friction force of the gate body 3 is enabled to be fast, the friction force is enabled to be reduced in the stage of the gate body 3 is enabled, and the brake is enabled to be fast, and the accident is avoided to be matched with the brake in the stage, and the moment is caused by the friction force is fast when the friction force is reduced. The power mechanism only needs to output a small moment to break the moment balance state of the rotating shaft 42, and the rotating shaft 42 can drive the gate and the counterweight to move up and down, so that the torque required to be applied to the rotating mechanism when the power mechanism opens and closes the gate is reduced.

From the angle analysis of energy conversion, when the gate body 3 is lifted, the gravity of the counterweight body 5 is converted into a pulling force upwards to the gate through the rotating mechanism, and the pulling force performs positive work on the gate body 3; the gravity of the gate is converted into the upward pulling force to the counterweight body 5 through the rotating mechanism, and the weight of the gate body 3 is converted into the upward pulling force to the counterweight body 5 through the rotating mechanism to apply negative work to the counterweight body 5 because the counterweight body 5 moves relatively downwards in the opposite pulling force direction, when the radius of the first rope winder 411 and the radius of the second rope winder 412 are not equal, the lengths of the first rope winder 411 and the second rope winder 412 rotating along the rotating shaft 42 wind or release the steel rope 46 satisfy the following relationship:

first rope reel 411 winding release wire rope 46 length first rope reel 411 circumference = second rope reel 412 winding release wire rope 46 length rope reel circumference = number of turns of rotation shaft 42; the roping radius referred to in the present utility model refers to the radius of the winding of the roping rope 46, the circumference of the roping, and refers to the circumference of the cross-sectional circle of the winding of the roping rope 46.

Because: rope winder circumference = 2 pi rope winder radius;

so that: first rope winder winding release wire rope length second rope winder winding release wire rope length = first rope winder radius second rope winder radius.

Since the first rope reel 411 and the second rope reel 412 are both on the same rotation shaft 42, the number of rotations of the wire rope 46 is the same, so that the height of the elevation of the gate body 3 and the counterweight body 5 is proportional to the radius of the rope reel to which each is connected.

As at moment balance of the rotating shaft 42:

gate body gravity first roping radius = counterweight gravity second roping radius,

so that: gate body gravity: counterweight weight = second rope winder radius: first rope winder radius,

the gate body gravity, the counterweight gravity=the second rope winder winding release cable length, the first rope winder winding release cable length,

thus, the height of the lifting of the counterweight 5 and the height of the lifting of the gate body 3 are inversely proportional to the respective gravities (note: gravity=weight×g, g is gravitational acceleration, here weight means mass), namely:

height of lifting of the counterweight body is that of the gate body=gate body gravity is that of the counterweight body

So that: height of lifting of the counterweight weight g = height of lifting of the gate body x gate body weight g, where g represents the acceleration of gravity.

So that: height of weight lifting = weight of weight = height of lifting of gate body:. Weight of gate body

According to the gravitational potential energy calculation formula, p= mgh, P represents gravitational potential energy, m represents mass (weight), h represents height of lifting of the counterweight body, g represents weight of the counterweight body and g represents lifting of the gate body, i.e. the potential energy values added by the counterweight body and the gate body are equal, and since the lifting height of the counterweight body 5 is opposite to the lifting height direction of the gate body 3, one is positive, the other is negative, and the sum of the two is zero.

When the radii of the first rope reel 411 and the second rope reel 412 are the same, the weight of the weight body 5 needs to be equal to the weight of the gate body 3 in order to achieve the optimal weight saving effect, which is simplified: the weight body 5 and the gate body 3 relatively ascend and descend, and the speed of the relative ascending and descending process of the weight body 5 and the gate body 3 is equal and opposite, so that the ascending and descending height of the weight body 5 is equal to the ascending and descending height of the gate body 3. According to a gravitational potential energy calculation formula p= mgh, P represents gravitational potential energy, m represents mass, g represents gravitational acceleration, and h represents height; the gravitational potential energy reduced by the counterweight body 5 is equal to the gravitational potential energy increased by the gate body 3; when the gate body 3 descends, the gravitational potential energy of the gate body 3 is reduced, the counterweight body 5 is lifted, the gravitational potential energy is increased, and similarly, the gravitational potential energy increased by the counterweight body 5 is equal to the gravitational potential energy reduced by the gate body 3. Therefore, in the opening and closing process of the gate body 3, only the power mechanism is needed to provide an initial speed for the counterweight body 5 and the gate, and the gate can be opened and closed with little energy output, so that the purpose of reducing the energy consumption of the power mechanism in the opening and closing process of the gate is realized.

In some possible embodiments, the roping can slide on the rotational shaft 42. The rope winder is radially fixed on the rotating shaft 42, and the axial direction can be self-slidably adjusted on the rotating shaft 42 along with the winding inclination of the steel rope 46 so as to ensure that the steel rope 46 is always perpendicular to the rotating shaft 42 during the winding process. Specifically, the first rope winder 411 is wound with a steel rope 46, one end of the steel rope 46 is fixed on the rope winder, and the other end is connected with the gate body 3; the second rope winder 412 is wound with a wire rope 46, and one end of the wire rope 46 is fixed to the rope winder and the other end is connected to the counterweight 5. When the gate is lifted, the power mechanism drives the rotation shaft 42 to rotate forward, the first rope winder 411 rotates forward along with the rotation shaft 42, the number of turns of the steel rope 46 wound on the rope winder increases, the steel rope 46 between the first rope winder 411 and the gate tends to deviate from the direction perpendicular to the rotation shaft 42, and at the moment, gravity can generate a component force to pull the first rope winder 411 back to the position where the steel rope 46 between the first rope winder 411 and the gate is perpendicular to the rotation shaft 42. When the gate body 3 descends, the power mechanism drives the rotation shaft 42 to rotate reversely, the first rope winder 411 rotates reversely along with the rotation shaft 42, the number of turns of the steel rope 46 wound on the rope winder is reduced, the steel rope 46 between the first rope winder 411 and the gate tends to deviate from the direction perpendicular to the rotation shaft 42, and the same as the condition of ascending the gate, gravity can generate a component force to pull the first rope winder 411 back to the position perpendicular to the rotation shaft 42 of the steel rope 46 between the first rope winder 411 and the gate.

In some possible embodiments, the left and right upright posts 12 of the gate frame are provided with a counterweight chute 121 and a gate chute 122. Further, the length of the counterweight chute 121 is equal to or greater than the sum of the maximum liftable height of the gate body 3 and the height of the counterweight body 5. The two ends of the counterweight body 5 are arranged in the counterweight sliding grooves 121 to slide up and down, and the counterweight sliding grooves 121 play a role in guiding and sliding the counterweight body 5. In some possible embodiments, a water stop bar can be further arranged in the gate chute 122, and two ends of the gate body 3 are arranged in the gate chute 122 to slide up and down; the gate chute 122 plays a role in guiding the gate body 3 and also plays a role in stopping water.

In the case of field installations, the gate body 3 is normally located on the upstream side with respect to the gate frame, while the counterweight 5 is located on the downstream side with respect to the gate frame. Further, a rope guide wheel 47 can be arranged on the door lintel 11, and the steel rope 46 is hung and wound on the rope winder, then hung and wound on the rope guide wheel 47 and finally passes through the door lintel 11; the guide sheave 47 guides the wire rope 46 so that the wire rope 46 can vertically pass through the lintel 11 for the purpose of keeping the wire rope 46 suspending the gate and the counterweight vertical. The power mechanism drives the rotation shaft 42 to rotate through a gear meshed with the rotation shaft 42, the rotation shaft 42 rotates to drive the first rope winder 411 and the second rope winder 412 to synchronously rotate, and as the winding directions of the steel ropes 46 on the first rope winder 411 and the second rope winder 412 are opposite, the gate body 3 and the counterweight body 5 relatively lift up and down, and a gap exists between the gate body 3 and the counterweight body 5 which relatively lift up and down, namely, the distance between the thickness center of the gate body 3 and the thickness center of the counterweight body 5 is larger than the diameter of the rope winder. So that interference or collision does not occur between the up-and-down-lifting gate body 3 and the weight body 5. Further, a guide wheel 45 may be disposed inside the counterweight chute 121, and after the two ends of the counterweight body 5 are disposed in the counterweight chute 121, the guide wheel 45 contacts the front and rear sides of the counterweight body 5. Or the counterweight body 5 is provided with a guide wheel 45, and after the two ends of the counterweight body 5 are arranged in the counterweight chute 121, the guide wheel 45 is contacted with the inner side surface 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 rope winder, or when the distance between the thickness center of the gate and the thickness center of the counterweight body 5 is not matched with the diameter of the pulley, the guide wheel 45 can be adjusted to adjust the gap between the gate body 3 and the counterweight body 5. The guide wheel 45 can prevent the counterweight body 5 from separating from the counterweight chute 121 when sliding back and forth in the counterweight chute 121, so as to avoid safety accidents.

In addition, referring to fig. 1, when the gate body 3 is in an open state, when the weight 5 has a block structure with a height dimension smaller than that of the gate body 3, the weight 5 should be located above the water surface in the channel or river channel, so as not to affect the effect of opening the gate and draining water. Specifically, the height of the counterweight body 5 can be adaptively designed according to the opening requirements of specific channels, and no matter the gate body 3 is half-opened or full-opened, only the lower end of the counterweight body 5 is required to be higher than the water surface.

Further, the weight 5 has various implementation modes, the first is to make the weight 5 as a whole, when the weight 5 and the gate body 3 are made of the same material, the length or width of the weight 5 needs to be changed, and in general, when the height of the weight 5 is smaller than that of the gate body 3, the requirement that the weight of the weight 5 is equal to that of the gate body 3 can be achieved by changing the width of the weight 5, so that the width of the left and right upright posts 12 of the gate frame needs to be widened in such a way as to meet the requirement that a gap exists between the gate body 3 and the weight 5 which are lifted up and down relatively. The second way is to make the counterweight body 5 as a whole, the counterweight body 5 and the gate body 3 are made of different materials, and the material density of the counterweight body 5 is greater than that of the gate body 3, so as to meet the requirement that the height dimension of the counterweight body 5 is smaller than that of the gate body 3. In this application, please refer to fig. 1 and 2, the gate body 3 is made of aluminum alloy, magnesium aluminum alloy, stainless steel, etc., the counterweight body 5 can be made of galvanized cast iron, surface treated common steel, lead, etc. with higher density and lower price, and the height dimension of the counterweight body 5 is smaller than the height dimension 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, wherein the bearing platform is made of materials such as aluminum alloy, magnesium aluminum alloy, stainless steel and the like, and a certain basic weight is reserved; the weights are cuboid weights with larger density and lower price and cast iron, common steel and lead blocks and are cast or forged into different weight specifications, and the widths of the cuboid weights are matched with the bearing platform, so that the weights are convenient to carry manually and can be used for carrying out weight balancing according to the actual weight of the gate body 3. The number of the counterweights can be one or a plurality of, and the weight of the counterweight body 5 can be increased or decreased according to the actual engineering requirements.

Specifically, when the power mechanism drives the rotating shaft 42 to rotate in the forward direction, the balance between the gate and the counterweight body 5 is broken, the gate moves upwards, and the counterweight body 5 is driven to move downwards through the steel cable 46; when the power mechanism drives the rotating shaft 42 to rotate reversely, the gate body 3 moves downwards, the corresponding steel cable 46 drives the counterweight body 5 to move upwards, in some possible embodiments, a first low-position limiting block 83, a first high-position limiting block 81 and a second high-position limiting block 82 can be further arranged on the left upright post and the right upright post 12, the first low-position limiting block 83 and the first high-position limiting block 81 are arranged on the counterweight sliding groove 121, and the second high-position limiting block 82 is arranged on the gate sliding groove 122. When the gate body 3 moves up to the second high-position limiting block 82, the gate is in a fully opened state. The weight body 5 is at the lowest position, and the lowest position can be limited by a first low-position limiting block 83, and the weight body 5 also has a first high-position limiting block 81, so that the weight body 5 cannot pass over the first high-position limiting block 81 when the gate is completely closed.

Under the condition that the moment of the gravity of the gate body 3 to the rotating shaft 42 is equal to the moment of the gravity of the counterweight body 5 to 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 one side of the rotating mechanism to the gate body 3 is equal to the gravity of the gate body 3; the pulling force of the steel cable 46 on the other side of the rotating mechanism on the counterweight body 5 is equal to the gravity of the counterweight body 5, and the respective stress balance of the gate body 3 and the counterweight body 5 is realized although the two forces may not be equal. When the weight of the counterweight body 5 is equal to the weight of the gate body 3, these two forces are equal in magnitude. Because the gravity of the gate body 3 and the gravity of the counterweight body 5 are carried by the rotating shaft 42, the power mechanism is not needed to overcome the huge gravity of the gate body 3 and the power mechanism is not needed to overcome the gravity of the gate body 3 and the counterweight body 5 to do work in each stage of starting, running and braking in the gate lifting process; the power mechanism only needs to provide a small driving force in the starting stage of the gate body 3, overcomes the friction force of each link and enables the gate body 3 and the counterweight body 5 to obtain a certain initial upward speed, only needs to overcome the friction force of each link in the running stage of the gate body 3, maintains the rising of the gate body 3 and the counterweight body 5 at a certain speed, and provides a small buffering force in the braking stage of the gate body 3 to be matched with the friction force of each link as resistance, so that the gate can be braked rapidly.

In each stage of starting, running and braking in the closing process of the gate, the power mechanism is not required to overcome huge buffering force of the gate body 3, the power mechanism only needs to provide a small driving force in the starting stage of the gate body 3, overcomes friction force of each link and enables the gate body 3 and the counterweight body 5 to obtain a certain initial downward speed, only needs to overcome friction force of each link in the running stage of the gate body 3, maintains the descent of the gate body 3 and the counterweight body 5 at a certain speed, and provides small buffering force matched with friction force of each link as resistance in the braking stage of the gate body 3, so that the gate is braked rapidly, and possible accidents caused by stall in the descending process of the gate body 3 are avoided easily.

In practical applications, the diameters of the first rope reel 411 and the second rope reel 412 may be equal or unequal, as long as the condition is satisfied: the first rope winding device is connected with the weight of the gate body=the second rope winding device is connected with the weight of the counterweight body, so that the best energy-saving effect can be achieved; in actual production, the opening space of the gate cannot be limited because only energy saving is required, therefore, in the case of determining the weight of the gate body 3 and the lifting space of the gate, the weight of the weight body 5 and the size of the rope winder connecting the weight body 5 are determined in combination with the liftable space of the weight body 5, and the model can be selected according to the following conditions: maximum height that the gate body can lift (descend) gate body weight = maximum height that the counterweight can descend (lift) weight; according to the condition, the minimum weight of the weight body 5 can be estimated, the weight of the weight body 5 is larger than the minimum weight in the actual design, and after the weight of the weight body 5 is determined, the radius ratio of the first rope winder 411 and the second rope winder 412 can be estimated according to the condition; in practice, it is necessary to determine the maximum height that the weight 5 can descend (lift) and the weight of the weight 5 in combination with the actual situation, without taking an extreme value. The diameter ratio of the rope winder needs to be selected according to the actual installation environment: under the condition that 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 larger than the weight of a gate, the diameter of a rope winder connected with the counterweight body 5 is reduced in the same ratio, and the effects of balanced stress of two weights, balanced moment of the rotating shaft 42 and unchanged sum of gravitational potential energy of the two rope winders connected with the weight can be achieved. Under the condition that the lifting height space of the counterweight body 5 is loose and the width space is relatively limited, the height of the counterweight body 5 can be increased to enable the weight of the counterweight body 5 to be equal to the weight of a gate, the weight of the counterweight body 5 can be reduced, the weight of the counterweight body 5 is smaller than the weight of the gate, the diameter of a rope winder connected with the counterweight body 5 is increased according to the proportion condition in the same ratio, and the effects of balanced stress of two weights, balanced moment of a rotating shaft 42 and unchanged sum of gravitational potential energy of the two rope winders connected with the weight can be achieved.

During the ascending and descending process of the gate body 3 and during the starting and braking process of the gate body 3, the output of the power mechanism is mainly used for overcoming friction of each link and giving trace kinetic energy to the gate body 3, the counterweight body 5 and the rotating shaft 42, compared with gravitational potential energy of the gate body 3 and the counterweight body 5, the kinetic energy of the gate and the counterweight body 5 can be ignored, after the counterweight body 5 is added, the overall mass is increased, and the energy which is consumed for accelerating to an initial speed during the starting process, namely the kinetic energy of the counterweight body 5, can be ignored. It can be seen that the sum of the gravitational potential energy of the counterweight 5 and the gate remains unchanged in the steps of starting, ascending, descending and braking of the gate, and if no particular acceleration is present, the gate and the counterweight 5 are in a balanced state at all times. The lifting gate only needs a power mechanism to lift very little moment to break the balance of the gate body 3 and the counterweight body 5, so that a certain initial speed is given to the gate body 3 and the counterweight body 5, and then the power mechanism only needs to overcome the friction force of each link to enable the gate body 3 to keep rising at a certain speed. The gate is closed only by a power mechanism to lift very little moment to break the balance of the gate body 3 and the counterweight body 5, so that a certain initial speed is given to the gate body 3 and the counterweight body 5, and then the power mechanism only needs to overcome the friction force of each link to keep the gate descending at a certain speed; in the rising process of the gate, the power mechanism does not work against the gravity of the gate as in the previous scheme; the power mechanism is no longer required to counteract the large gravitational dampening force of the gate during the lowering braking of the gate. Because the gravitational potential energy of the counterweight body 5 and the gravitational potential energy of the gate are mutually converted, the aim of reducing the energy consumption of the power mechanism in the opening and closing process of the gate is fulfilled.

In some possible embodiments, the counterweight body 5 may be composed of a counterweight body 5 carrying platform or a counterweight, and the number of the counterweight objects may be one or a plurality of counterweight objects. From moment analysis, when the condition: when the moment of the gravity of the gate body to the rotating shaft=the moment of the gravity of the counterweight body to the rotating shaft is met, the moment of the gravity of the gate body 3 to the rotating shaft 42 and the moment of the gravity of the counterweight body 5 to the rotating shaft 42 are equal in magnitude and opposite in direction, the directions are mutually offset, the rotating shaft 42 is in a moment balance state, and the opening and closing energy consumption saving effect of the gate is optimal. In practical cases, the weight of the counterweight body 5 is difficult to control precisely due to various factors, so the total weight of the counterweight body 5 can be flexibly configured according to practical situations. On the weight body 5 bearing platform, a proper amount of weight can be added for adjustment.

The actual energy consumption of the front and rear gates of the counterweight energy-saving proposal is adopted to simplify the estimation. Because the counterweight energy-saving scheme is adopted, the load of the power mechanism is increased and reduced, and the internal friction is reduced by the same time; the friction between the rope winder and the steel rope 46 is rolling friction, and the friction force is negligible, so that the friction force is ignored in the calculation process to apply work.

The energy consumption and friction force situations after the counterweight energy-saving scheme is not adopted and the counterweight energy-saving scheme is adopted are compared and calculated in theory as follows:

presetting conditions: gate body weight: m=1000 Kg, accelerating it to v=2 mm/s (opening and closing speed of the market gate is 1mm/s to 1.5 mm/s), lifting height: 5m.

The calculation formula A is that the energy consumption calculation required by the counterweight energy-saving scheme is not adopted:

when the counterweight energy-saving scheme is not adopted, the minimum value of the required energy consumption is the sum of the kinetic energy E of the gate body when the gate body 3 is lifted to the target height and the added gravitational potential energy P, the gate is accelerated from rest to v=2mm/s, and the minimum required energy is calculated as the kinetic energy E of the gate body as follows:

v=2mm/s=0.002m/s

e=1/2×mv=1/2×1000kg 0.002m/s×0.002 m/s=0.002J (joule)

The added gravitational potential energy P of the gate body is calculated as follows:

p= mgh =1000 Kg of 9.8n/Kg of 5 m=49000j=49 kJ (kilojoules),

neglecting friction to do work, the required total energy consumption e+p=49000j+0.002j= 49000.002J.

The calculation formula B is that the energy consumption required by adopting the counterweight energy-saving scheme is calculated:

the minimum required energy consumption is the sum of the kinetic energy E of the counterweight body 5 and the gate body 3 and the gravitational potential energy P of the counterweight body 5 and the gate body 3 when the gate body 3 is raised to the target height, and the sum is calculated as follows:

(assuming equal weight of the gate body 3 and the counterweight 5)

Only the gate moves when the counterweight energy-saving scheme is not adopted, and the counterweight body 5 and the gate move at the same speed and opposite directions after the counterweight energy-saving scheme is adopted, and the kinetic energy of the counterweight body and the gate are respectively as follows:

eGate=1/2×mv=1/2×1000kg×0.002 m/s=0.002J (joule)

E weight 5=1/2×m×v=1/2×1000kg (-0.002 m/s) ×0.002J (joule)

The total kinetic energy is: e=egate+ecounterweight 5=0.002J (joule) +0.002J (joule) =0.004J (joule),

the total increase in kinetic energy is: e=egate+ecounterweight 5=0.004j+0=0.004J,

the added gravitational potential energy of the gate body 3 is as follows:

pgate= mgh =1000 Kg x 9.8n/Kg x 5 m=49000j=49 kJ (kilojoules),

the gravitational potential energy added by the counterweight body 5 is that the counterweight body 5 descends, the added height is-5 m,

p counterweight= mgh =1000 Kg of 9.8n/Kg (-5 m) = -49000 j= -49kJ (kilojoules),

the sum of the gravitational potential energy of the gate and the counterweight body 5 combination, which is increased after the gate is lifted by 5m, is:

p=pgate+pcounterweight 5=49000j+ (-49000J) =0j.

It can be seen that the lifting gate only needs the power mechanism to provide little energy consumption after adopting the counterweight energy-saving scheme.

Calculation formula C: by adopting the counterweight energy-saving scheme, the gate is opened and closed, and the torque required to be provided for the rotating shaft 42 by the power mechanism is calculated as follows: (assuming that the radius of the rotation axis is r=0.05m, neglecting the moment of inertia and friction of the rotation mechanism itself), the combination of the shutter body 3 connected to the rotation axis 42 by the wire rope 46, the moment of inertia of rotation about the rotation axis 42 is:

J=m gate r,

the gate body 3 is accelerated and lifted upwards at an acceleration of 1mm/s, and acceleration is stopped after 2 seconds, and the torque required to be provided to the rotating shaft by the power mechanism is calculated as follows:

1mm/s²=0.001m/s²,

the gate body is accelerated and ascended at the acceleration of 1mm/s, and the angular acceleration of the rotating shaft with the radius r is as follows:

α=（0.001m/s²）/0.05m=0.02rad/s²，

when the counterweight energy-saving scheme is not adopted, the torque M required to be provided by the power mechanism meets the following conditions:

m-mg x r=j x a (g is gravitational acceleration),

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 (nix),

after the counterweight energy-saving scheme is adopted, the torque M required to be provided by the power mechanism meets the requirement (assuming that the weight of the counterweight body 5 is equal to that of the gate, the length of the arm of force of the counterweight body 5 is equal to that of the gate):

j gate = m gate r,

j weight 5 = m weight 5*r,

m=j gate α gate+j counterweight α counterweight (g is the gravitational acceleration, α gate is equal in size to α counterweight, opposite in direction, J gate=j counterweight),

m=j gate (α gate+α counterweight)

M=j gate x 0rad/s,

m=0n×m (bovine rice),

from the calculation, the adoption of the counterweight energy-saving scheme provided by the utility model greatly reduces the torque requirement on the power mechanism in the opening and closing process of the gate.

The calculation of the required energy consumption and torque of the front and rear gates by the counterweight energy-saving scheme shows that after the counterweight energy-saving scheme is adopted, the required opening and closing torque of the gates is greatly reduced, and the required energy consumption is also greatly reduced. It is seen from theoretical calculation that after the counterweight energy-saving scheme is adopted, under the condition of neglecting friction force, the gate body 3 and the counterweight body 5 only need to be opened and closed with a small driving force, and after the friction force is overcome and a certain initial speed is given to the gate and the counterweight body 5, the power mechanism only needs to overcome the friction force of a link, so that the gate can be lifted and lowered at a certain speed. The lifting speed of the gate and the counterweight body 5 is very small when the gate and the counterweight body work, so the kinetic energy is very small, and the energy consumption required for opening and closing the gate is close to zero under the condition of neglecting friction force.

Further, the weight of the counterweight body 5 and the gate body 3, and the length of the arm of force can achieve the best energy-saving effect under the condition that:

gate body force = counterweight force arm, i.e.: moment of gate body gravity to rotation axis = moment of counterweight body weight to rotation axis; in the case where the equation is satisfied, it can be deduced that:

1. gate body lifting (lowering) height Gate body weight = weight body weight of weight body weight

2. Gate body lifting (lowering) speed Gate body weight = weight body lifting (lifting) speed weight body weight

Further, the weight measurement value range of the counterweight can be calculated according to the following conditions:

secondly, the length of the arm of the gate body is the maximum lifting height of the gate body = the length of the arm of the counterweight body;

the arm length includes: for the case that the weight body 5 and the gate body 3 are connected with the steel cable 46 through the rope winder, the arm length of the gate body 3 is the radius of the rope winder connected with the gate body 3, the arm length of the weight body 5 is the radius of the rope winder connected with the weight body 5, for the case that the weight body 5 and the gate body 3 are respectively connected with the steel cable 46 with one end fixed on the rotating shaft 42, the arm length of the gate body 3 is the radius of the section circle of the rotating shaft 42 connected with the fixed position of the steel cable 46 of the gate body 3, and the arm length of the weight body 5 is the radius of the section circle of the rotating shaft 42 connected with the fixed position of the steel cable 46 of the weight body 5;

In the case of connecting the counterweight body 5 and the gate body 3 and directly winding the steel cable 46 on the rotating shaft 42, the length of the arm of force of the gate body 3 is equal to the length of the arm of force of the counterweight body 5, and the length of the arm of force is equal to the radius of the section circle of the rotating shaft 42 where the steel cable 46 is wound.

In the calculation scheme provided by the utility model, the length of the moment arm of the counterweight body 5 is equal to the length of the moment arm of the gate, and the weight of the counterweight body 5 is equal to the weight of the gate, so that the moment of the gravity of the counterweight body 5 to the rotating shaft 42 is equal to the moment of the gravity of the gate body 3 to the rotating shaft 42, and the calculation scheme belongs to the best feasibility scheme.

In some possible embodiments, the left and right upright posts 12 of the gate frame are provided with a counterweight chute 121 and a gate chute 122. Further, the length of the counterweight chute 121 is equal to or greater than the sum of the liftable height of the gate body 3 and the height of the counterweight body 5. The two ends of the counterweight body 5 are arranged in the counterweight sliding grooves 121 to slide up and down, and the counterweight sliding grooves 121 play a role in guiding and sliding the counterweight body 5. In some possible embodiments, a water stop bar can be further arranged in the gate chute 122, and two ends of the gate body 3 are arranged in the gate chute 122 to slide up and down; the gate chute 122 plays a role in guiding the gate body 3 and also plays a role in stopping water.

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 may be disposed inside the weight sliding groove 121, and after both ends of the weight body 5 are disposed in the weight sliding groove 121, the guide wheel 45 contacts the front and rear sides of the weight body 5. The guide wheel 45 may be provided on the counterweight body 5, and after both ends of the counterweight body 5 are placed in the counterweight chute 121, the guide wheel 45 may be in contact with the inner side surface 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 gate body 3 thickness center and the counterweight body 5 thickness center is greater than the diameter of the fixed pulley, or when the distance between the gate thickness center and the counterweight body 5 thickness center is not matched with the diameter of the pulley, the guide wheel 45 can be adjusted to adjust the gap between the gate body 3 and the counterweight body 5. The guide wheel 45 can prevent the counterweight body 5 from separating from the counterweight chute 121 when sliding back and forth in the counterweight chute 121, so as to avoid safety accidents.

In some possible embodiments, please continue to refer to fig. 1 and 2, a steering device 7 is connected to the driving motor 6, 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 meshed with each other, a first steering shaft 72 and a second steering shaft 71 are connected to the bevel gear sets, an angle of 90 degrees is formed between the first steering shaft 72 and the second steering shaft 71, the first steering shaft 72 is in a speed reducer worm shaft 91 through a coupler 62, and is coaxial with a power shaft of the driving motor 6, the second steering shaft 71 faces outwards, a manual crank 75 bayonet is connected, and the manual crank 75 bayonet can be connected to the manual crank 75. The manual crank 75 is a portable crank which can be installed and removed as needed. When the gate needs to be opened and closed manually, the control motor is firstly unlocked, and after the manual crank 75 is installed on the bayonet of the manual crank 75, the gate can be opened and closed by manpower instead of the motor.

Further, in some possible embodiments, it cannot be guaranteed that the moment of gravity of the counterweight 5 against the rotation axis 42 is equal to the moment of gravity of the gate body 3 against the rotation axis 42, in which case two cases can be analyzed: when the moment of the gravity of the counterweight body 5 to the rotating shaft 42 is less than the moment of the gravity of the gate body 3 to the rotating shaft 42, the gravity of the counterweight body 5 is converted into the gate lifting pulling force through the rotating shaft 42 from the stress angle, and the gate cannot be lifted; the gravity of the gate is converted into a pulling force upwards on the counterweight body 5 through the rotating shaft 42, the pulling force is larger than the gravity of the counterweight body 5, and if the counterweight body 5 is interfered by an unpowered mechanism, the counterweight body 5 is lifted to the highest position; in the analysis of the force moment of the rotating shaft 42, in this case, since the gate body 3 and the counterweight body 5 are unbalanced in force, the power mechanism needs to supplement a torque on the counterweight body 5 side, so that the moment balance of the rotating shaft 42 is realized, and the force balance of the counterweight body 5 and the gate body 3 can be realized; the torque required to be supplemented by the power mechanism is as follows: the moment of the gravity of the gate body 3 to the rotating shaft 42, namely the moment of the gravity of the counterweight body 5 to the rotating shaft 42 is obviously smaller than the moment which needs to be overcome by the power mechanism without the counterweight body 5, so that the torque required by the power mechanism is partially saved. From the point of view of energy conversion and power mechanism work, in this case the weight body 5 has insufficient potential energy to lift the gate body to the following height, which can be according to the formula:

Gate body lifting height gate body weight = weight of weight body of weight to be lowered, the height that the gate body calculated lifted, need power unit to supplement some energy, the minimum energy calculation that power unit supplemented is as follows:

assuming that the power mechanism needs to rotate N (N > 0) in long phase when lifting the gate, the power mechanism applies work W to the gate body as follows:

w= (moment of gate body 3 gravity against axis of rotation-moment of counterweight gravity against axis of rotation) ×n×2pi, obviously greater than 0.

Obviously: w < moment of gate body gravity to rotation axis > N <2 pi;

therefore, when the moment of the weight force of the counterweight to the rotating shaft is less than the moment of the weight force of the gate body to the rotating shaft, the counterweight energy-saving gate does not achieve the optimal torque saving and energy saving effects, but the torque requirement and the energy consumption requirement of the power mechanism are reduced compared with the condition of no counterweight energy saving.

And (two) when the moment of the weight of the counterweight to the rotating shaft is greater than the moment of the weight of the gate body to the rotating shaft and the moment of the weight of the counterweight to the rotating shaft is less than 2 times the moment of the weight of the gate body to the rotating shaft, the moment of the gate body 3 to the rotating shaft 42 is increased on the side of the counterweight 5 on the basis of the moment of the weight of the counterweight to the moment of the arm of the length of the gate body to the moment of the arm of the length of the arm of the force of the gate body, so that the moment of the gate body 3 to the rotating shaft 42 is offset with the moment of the gate side gate, and the rest is the moment of the original counterweight 5. In this case, from the force-bearing angle analysis, the weight 5 is subjected to gravity through the rotation shaft 42, and is converted into a pulling force for lifting the gate, which is greater than the gravity of the gate; the gravity of the gate is converted into a pulling force upwards to the counterweight body 5 through the rotating shaft 42, the pulling force is smaller than the gravity of the counterweight body 5, and if the non-power mechanism intervenes in the gate body 3, the gate body is lifted to the highest position; from the force moment analysis of the rotation shaft 42, in this case, since the gate body 3 and the counterweight body 5 are unbalanced in force, the power mechanism needs to supplement a same directional moment on the gate side, so that the moment of the counterweight body weight to the rotation shaft=the moment of the gate body weight to the rotation shaft, that is, the force balance of the counterweight body 5 and the gate body 3 is realized, and the rotation shaft 42 also realizes the moment balance; the torque required to be supplemented by the power mechanism is as follows: the torque of the weight body gravity to the rotating shaft, namely the torque of the gate body gravity to the rotating shaft, is smaller than the torque of the gate body 3 gravity to the rotating shaft 42 because the torque of the weight body gravity to the rotating shaft is greater than the torque of the gate body gravity to the rotating shaft and the torque of the weight body gravity to the rotating shaft is less than the torque of the gate body gravity to the rotating shaft, thus partially saving the torque required by the power mechanism. In this case, when the gate is closed, the power mechanism is required to supplement the moment required for lifting the counterweight 5, and this supplementary moment is smaller than the moment required for lifting the gate body 3 without the counterweight 5, so the torque required by the power mechanism is partially saved, the torque acting condition of the power mechanism is the same as the total moment of the weight 5 gravity to the rotating shaft < the moment of the gate body gravity to the rotating shaft, and the above is not repeated. When the gate is opened, the gravitational potential energy provided by the counterweight body 5 is greater than the gravitational potential energy required by the lifting of the gate body 3, the lifting force provided by the counterweight body 5 is greater than the gravitational force of the gate body 3, and the power mechanism is required to provide additional buffering force to balance the redundant lifting force, so that the situation that the excessive lifting force is avoided as much as possible is avoided.

To sum up, when the gate body weight is less than the gate body arm length of force of the counterweight body weight is less than the gate body weight is less than 2 times the gate body arm length of force of the counterweight body, the counterweight energy-saving scheme can achieve the energy-saving effect; when the gate body weight is equal to the gate body moment arm length=the weight body weight is equal to the weight body moment arm length, the weight energy saving effect is optimal.

According to the balance weight energy-saving steel rope 46 driving gate, under the condition that the moment of gravity of the balance weight body 5 to the rotating shaft 42 is equal to the moment of gravity of the gate body 3 to the rotating shaft 42, the balance weight body 5 and the gate body 3 realize stress balance, the rotating shaft 42 realizes moment balance, the balance weight body 5 is matched with the rising or falling of the gate to provide rising pulling force or falling buffer force for the gate body 3, meanwhile, gravitational potential energy released in the falling process of the gate body 3 is stored or gravitational potential energy is provided for the rising process of the gate body 3, and the combination of the gate body 3 and the balance weight body 5 is realized in the rising process of the gate body 3. Because the gravity of the gate body 3 and the gravity of the counterweight body 5 are carried by the rotating shaft 42, the power mechanism is not required to overcome the huge gravity or buffering force of the gate body 3 and the power mechanism is not required to overcome the gravity of the gate body 3 and the counterweight body 5 to do work in each stage of starting, running and braking in the opening and closing process of the gate; the power mechanism only needs to provide a small driving force at the starting stage of the gate body 3, overcomes the friction force of each link and enables the gate body 3 and the counterweight body 5 to obtain a certain initial speed, only needs to overcome the friction force of each link at the running stage of the gate body 3, maintains the lifting of the gate body 3 and the counterweight body 5 at a certain speed, provides a small buffering force at the braking stage of the gate body 3 and is matched with the friction force of each link as resistance, so that the gate is braked rapidly, and possible accidents caused by stall in the descending process of the gate body 3 are avoided easily. Because the power mechanism is not needed to overcome the gravity acting borne by the gate body 3 and the counterweight body 5, the driving force requirement and the energy consumption requirement of the gate are greatly reduced, the requirement of the power mechanism on energy consumption in the opening and closing process of the gate is reduced, the standby time of the power mechanism is potentially prolonged, the physical energy consumption of the manual hand-operated lifting gate is greatly reduced, and the hand-operated speed is improved.

In addition, in the case that the moment of the gravity of the counterweight body 5 to the rotation shaft 42 is equal to the moment of the gravity of the gate body 3 to the rotation shaft 42, the energy saving effect can still be achieved as long as the moment of the gravity of the counterweight body 5 to the rotation shaft 42 is smaller than the moment of the gravity of the gate body 3 to the rotation shaft 42 by two times, and of course, the smaller the difference between the moment of the gravity of the counterweight body 5 to the rotation shaft 42 and the moment of the gravity of the gate body 3 to the rotation shaft 42 is, the better the energy saving effect is.

The protection scope of the present utility model is not limited to the above embodiments, and all technical solutions belonging to the inventive concept belong to the protection scope of the present utility model. It should be noted that modifications and adaptations to the utility model without departing from the principles thereof are intended to be within the scope of the utility model as set forth in the following claims.

Claims

1. The balance weight energy-saving steel rope driving gate comprises a gate body and a gate frame, wherein the gate frame comprises left and right upright posts, and is characterized by further comprising a balance weight body and a rotating mechanism; the height dimension of the counterweight body is smaller than that of the gate, the rotating mechanism comprises a rotating shaft, a first steel rope section and a second steel rope section are wound on the rotating shaft, the ends of the first steel rope section and the second steel rope section are respectively connected with the gate body and the counterweight body, the winding directions of the first steel rope section and the second steel rope section on the rotating shaft are opposite, the rotating mechanism drives the gate body and the counterweight body to relatively lift up and down, and a gap exists between the gate body and the counterweight body which lift up and down.

2. The weight and energy saving wire rope driven gate of claim 1, wherein the rotating shaft is further provided with a wire rope winder, the wire rope winder comprises a first wire rope winder and a second wire rope winder, the wire rope winder is fixed on the rotating shaft, the first wire rope section is wound on the first wire rope winder, the second wire rope section is wound on the second wire rope winder, and the winding direction of the first wire rope section on the first wire rope winder is opposite to the winding direction of the second wire rope section on the second wire rope winder.

3. A weighted energy efficient wire rope driven gate as defined in claim 2, wherein said rope winder is slidable in the axial direction of the rotational shaft.

4. The balance weight energy-saving steel rope driving gate according to claim 1, wherein the left upright post and the right upright post of the gate frame are provided with a balance weight sliding groove and a gate sliding groove, two ends of the balance weight body are arranged in the balance weight sliding groove to slide up and down, and two ends of the gate body are arranged in the gate sliding groove to slide up and down.

5. The energy-saving counterweight cable driven gate as recited in claim 4 wherein guide wheels are disposed between the inner side of said counterweight chute and the counterweight body.

6. The energy-saving counterweight steel cable driving gate as recited in claim 4 wherein the left and right posts are further provided with a first low-position limiting block, a first high-position limiting block and a second high-position limiting block, the first low-position limiting block and the first high-position limiting block are arranged on the counterweight sliding chute, and the second high-position limiting block is arranged on the gate sliding chute.

7. The weighted energy efficient wire rope driven gate of claim 1, further comprising a power mechanism including a drive motor.

8. The weight and energy efficient wire rope driven gate of claim 7, wherein said power mechanism includes a speed reducer.

9. The balance weight energy-saving steel rope driving gate according to claim 8, wherein the power mechanism is connected with a steering device, a pair of bevel gear sets meshed with each other are arranged in the steering device, a first steering shaft and a second steering shaft are respectively connected to the bevel gear sets, an angle of 90 degrees is formed between the first steering shaft and the second steering shaft, the first steering shaft is connected with a worm shaft of a speed reducer through a coupler, the front surface of the second steering shaft is outwards connected with a manual crank bayonet, and the manual crank bayonet is connected with a manual crank.

10. The weight and energy saving rope driven gate of claim 1, wherein a manual crank is mounted at the end of the rotating shaft.

11. The weighted energy saving wire rope driven gate of claim 4, wherein the length of the weighted chute is equal to or greater than the sum of the lifting height of the gate body and the height of the weight body.

12. The energy-saving counterweight rope driven gate as recited in claim 1, wherein the counterweight body is composed of a counterweight body bearing platform and counterweight objects, and the number of the counterweight objects is at least one.

13. The weighted energy efficient wire rope driven gate of claim 1, wherein the relationship between the gate body and the weighted body is: weight of the counterweight body weight force arm length < 2 weight of the gate body weight force arm length, wherein the counterweight body force arm length is the distance from the axial center line of the rotating shaft to the action line of the weight force of the counterweight body; the length of the arm of force of the gate body is the distance from the axial center line of the rotating shaft to the acting line of the gravity of the gate body.