A balance beam type mobile weight gravity power generation device

Abstract

The application discloses a scale rod type mobile counterweight gravity power generation device and belongs to the technical field of power generation equipment. The system comprises a building frame, a plurality of groups of counterweight devices, a bottom locking device, a top locking device, a transposition driving mechanism, a transmission power generation device and a central control system. Each group of counterweight devices comprises left and right counterweight boxes and horizontally movable counterweight blocks, and the counterweight boxes slide along vertical guide rails in lifting pits. The main shaft of the transmission power generation device is connected with the left and right counterweight blocks through traction ropes, and the main shaft drives a generator through a speed increaser. The system operation logic is as follows: after the central control system controls the locking device to lock the counterweight boxes, the transposition driving mechanism drives the counterweight blocks to horizontally move to change the torque at extremely low energy consumption, and after being unlocked, the top counterweight box falls to drive the main shaft to rotate and generate power. A plurality of groups of counterweight devices are operated in turn under staggered peak time control, so that continuous and stable power generation is realized. The application can establish a torque difference through static horizontal transposition, has high energy conversion efficiency and can be stably operated in a large tonnage.

Description

Technical Field

[0001] This invention belongs to the field of power generation equipment technology, specifically relating to a system for generating electricity using the gravitational potential energy of a counterweight. Background Technology

[0002] Against the backdrop of global energy structure transformation and the goal of achieving "carbon peaking and carbon neutrality," the development and utilization of clean and sustainable energy technologies have become core issues. Existing power generation methods mainly include thermal power generation, hydropower generation, wind power generation, and photovoltaic power generation. Among them, hydropower generation essentially utilizes the gravitational potential energy of water, but it is limited by geographical and hydrological conditions.

[0003] The technology route for directly driving and continuously generating electricity using the gravitational potential energy of solid media still has many technological gaps. Existing gravity energy storage or power generation devices generally suffer from problems such as unstable system operation, low energy conversion efficiency, and difficulty in achieving large-tonnage, high-power, and continuous stable output. In particular, how to maintain the system's cyclical operation with relatively small input energy during the continuous conversion of potential energy into electrical energy is a key technical challenge.

[0004] Therefore, there is an urgent need for a power generation device that is structurally reliable, operates stably, has high energy conversion efficiency, and can generate electricity continuously. Summary of the Invention

[0005] The purpose of this invention is to provide a lever-type mobile counterweight gravity power generation device to solve the problem that existing gravity potential energy power generation devices are difficult to achieve large-tonnage, continuous, and stable power generation.

[0006] To achieve the above objectives, the present invention provides a lever-type mobile counterweight gravity power generation device. Its core principle is to utilize the gravitational potential energy stored in the counterweight at a high position, and through a unique "static horizontal displacement" step, change the torque distribution of the system with extremely low energy consumption, thereby triggering and releasing the gravitational potential energy to generate electricity.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0008] A lever-type mobile counterweight gravity power generation device includes:

[0009] The building frame has a set of square left and right lifting pits excavated in the left and right directions respectively. The top of the building frame between the lifting pits is provided with a middle base, and vertical guide rails are provided on the left and right side walls of the lifting pits. The building frame has several sets of lifting pits along the front and back directions.

[0010] Several sets of counterweight devices, each set of counterweight devices includes a left counterweight box, a right counterweight box, a left counterweight block, and a right counterweight block. The left counterweight box is located in a left lifting pit, and the left and right outer walls of the left counterweight box are in rolling engagement with the vertical guide rail inside through rollers. The left counterweight block is slidably disposed in the left counterweight box in the left and right directions through a sliding limit shaft. The right counterweight box is located in a right lifting pit, and the left and right outer walls of the right counterweight box are in sliding engagement with the vertical guide rail inside through rollers. The right counterweight block is slidably disposed in the right counterweight box in the left and right directions through a sliding limit shaft.

[0011] A bottom locking device is installed at the bottom of the lifting pit to lock the counterweight box that has reached the bottom of the lifting pit.

[0012] A top locking device is installed in the upper part of the lifting pit to lock the counterweight box that reaches the top of the lifting pit;

[0013] The shifting drive mechanism is installed in each counterweight box and is used to drive the counterweight block inside the box to move horizontally to change the torque when the counterweight box is locked by the bottom locking device or the top locking device and is stationary.

[0014] The transmission-generating device includes a main shaft, a speed increaser, and a generator. The main shaft is horizontally mounted on a central base along the front-to-back direction via bearings. One end of the main shaft is connected to the input shaft of the speed increaser via a coupling. The output shaft of the speed increaser is connected to the rotating shaft of the generator via a coupling. A speed limiter is provided on the output shaft of the speed increaser. The generator output is connected to the power grid after passing through a full-power converter. Several limit slots are evenly provided on the main shaft. A traction rope is wound in each limit slot. The left end of the traction rope is connected to the left counterweight, and the right end is connected to the right counterweight, which is used to convert the kinetic energy of the falling counterweight box into electrical energy.

[0015] The central control system is electrically connected to the bottom locking device, the top locking device, the shifting drive mechanism, and the transmission power generation device. It is used to control each mechanism to perform the following cycle: after a pair of counterweight boxes reach the top and bottom respectively and are locked, the shifting drive mechanism is controlled to synchronously drive each counterweight block to shift horizontally; after the shifting is completed, the bottom locking device and the top locking device are controlled to unlock synchronously, so that the top counterweight box falls to do work and drives the bottom counterweight box to reset and rise.

[0016] Multiple pairs of counterweight boxes operate in shifts under the staggered timing control of the central control system to achieve continuous power generation.

[0017] Furthermore, the main shaft is a rigid heavy-duty main shaft, and the limiting groove is provided with a rope groove to prevent the traction rope from overlapping or biting.

[0018] Furthermore, the counterweight box has sliding limit grooves on its front and rear side walls, and the counterweight block has a sliding limit shaft on its side wall. The sliding limit shaft extends into the sliding limit groove so that the counterweight block is slidably placed in the counterweight box. Several top self-locking shafts and bottom self-locking shafts are evenly and alternately fixed at the bottom of the box.

[0019] The displacement drive mechanism is located on one side of the counterweight and includes:

[0020] Drive unit: includes a motor fixed to one end of the front side wall inside the counterweight box and a reducer connected to the motor output shaft. The tail of the motor is integrated with a power-off brake, which automatically clamps the motor shaft when the power is off to prevent the counterweight from being accidentally displaced after the repositioning is completed.

[0021] Drive wheel: connected to the output shaft of the reducer via a key;

[0022] Driven and fixed pulleys: The driven and fixed pulleys are set at the other end of the front side wall inside the counterweight box by adjusting the screw bracket. The position of the driven and fixed pulleys can be finely adjusted in the horizontal direction by adjusting the screw bracket to tension the shifting traction rope.

[0023] The displacement traction rope and connectors include a displacement traction rope that connects the driving wheel and the driven fixed pulley, a rope clamp whose tail is fixed to the side wall of the counterweight, and the front end of the rope clamp is sleeved on the displacement traction rope to realize the left and right traction movement of the counterweight.

[0024] Limit switches are installed on the inner walls of both ends of the counterweight box corresponding to the counterweight. When the counterweight moves to the end point, the limit signal is triggered, and the motor is stopped by the central control system.

[0025] A mechanical limit lock mechanism is provided on the other side wall of the counterweight block. After the counterweight block moves horizontally and is moved into place, the mechanical limit lock rigidly locks the counterweight block and the counterweight box together. This prevents the counterweight block from slipping or moving during the power generation process without relying on the motor brake, and ensures that the torque remains constant.

[0026] Furthermore, the top and bottom of the counterweight box are equipped with guide rails, and the top and bottom of the counterweight block are in rolling cooperation with the guide rails through load-bearing rollers. A rotary encoder is installed at the tail of the motor or on the output shaft of the reducer to detect the horizontal position and moving speed of the counterweight block in real time and feed it back to the central control system to achieve closed-loop control.

[0027] Furthermore, horizontal beams are provided on both sides of the counterweight box above the lifting pit, extending horizontally in the left and right directions. Several vertical beams are vertically arranged at the bottom of these beams, corresponding to the top self-locking shaft. The top locking device is located at the bottom of the vertical beams. Each vertical beam consists of two parallel beams with several reinforcing ribs evenly distributed in the middle. A drive motor is inverted and fixed to the top surface of the bottom reinforcing rib. A sliding plate is horizontally arranged below the reinforcing rib, and both ends of the sliding plate are slidably connected to the vertical beams via slider grooves. The output shaft of the drive motor passes through the reinforcing rib and is connected to a lead screw. The lower end of the lead screw is connected to the sliding plate. The sliding plate is connected with locking wedges fixed on both sides of its bottom surface. The outer wall of the locking wedges contacts the vertical beams, and a vertical gap is left in the middle of the locking wedges. Limiting holes are symmetrically opened on the two vertical beams below the locking wedges. Limiting rods are inserted into the limiting holes, and a return spring is provided between the boss at the tail of the limiting rod and the boss of the limiting hole. The front end of the limiting rod is provided with a thickened arc-shaped bearing, and the inner arc surfaces of the two bearings are opposite each other. The inner arc surface of the bearing matches the top self-locking shaft, and a pressure sensor is provided in the middle of the inner arc surface of the bearing. The pressure sensor is electrically connected to the central control system.

[0028] Furthermore, the upper part of the outer arc surface of the bearing bush is provided with ball bearings, so that when it slides against the locking wedge, it is a rolling friction, which reduces the pushing and pulling resistance of the locking wedge and avoids jamming when wedged in.

[0029] Furthermore, an installation pit is provided on the bottom surface of the lifting pit, and an installation beam is vertically provided in the pit. The position of the installation beam corresponds to the bottom self-locking shaft. A bottom locking device is provided on the top of the installation beam, and the bottom locking device has the same structure as the top locking device.

[0030] Furthermore, it also includes a counterweight box balancing device, comprising a counterweight block, two fixed balancing pulleys, and a balancing traction rope. One of the fixed balancing pulleys is located on a base directly above one end of the counterweight box away from the main shaft and above the building frame. The other pulley is located at the same horizontal height and is located on the front / rear side of the counterweight box. One end of the balancing traction rope is connected to the edge of the counterweight box directly below, passes around the two fixed balancing pulleys in sequence, and the other end is connected to the counterweight block, so that the counterweight block is located on the front / rear side of the counterweight box.

[0031] Furthermore, each counterweight device is equipped with an independent main shaft, and each main shaft is coaxially mounted on the intermediate base; each counterweight device is mechanically independent of each other and is controlled by the central control system for staggered relay control.

[0032] Furthermore, the building frame is a vertical shaft concrete structure, employing a differentiated load-bearing structure consisting of an inner main load-bearing shear wall and an outer auxiliary wall.

[0033] Compared with the prior art, the beneficial effects of the present invention are:

[0034] 1. The system of this invention establishes a torque difference with extremely low energy consumption through "static horizontal transposition" to trigger the release of gravitational potential energy. According to calculations, the net power generation in a single cycle is far greater than the sum of transposition and friction loss, which follows the law of conservation of energy and has excellent industrial application value.

[0035] 2. The system of this invention employs ingeniously designed top and bottom locking mechanisms, enabling repositioning while locked in a static state, thus avoiding dynamic loads on the locking mechanism. The preferred wedge-bearing locking structure, combined with pressure sensor feedback, provides a reliable dual guarantee of mechanical locking and electrical interlocking.

[0036] 3. The present invention adopts a differentiated internal and external building frame and counterweight box balance design to ensure the stable operation under heavy tonnage conditions. The multi-unit independent main shaft design realizes modularity, which facilitates maintenance and expansion.

[0037] 4. This invention maintains a uniform descent speed through a speed limiting mechanism, and combined with peak-shifting relay control and full-power converter grid connection technology, it can output continuous and stable electrical energy to meet grid connection requirements. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0039] Figure 2 for Figure 1 Schematic sectional view of section AA;

[0040] Figure 3 for Figure 2 Simplified diagram;

[0041] Figure 4 for Figure 1 A cross-sectional view along the front-back direction;

[0042] Figure 5 This is a schematic diagram of the counterweight box structure of the present invention;

[0043] Figure 6 for Figure 5 A top-view structural diagram;

[0044] Figure 7 for Figure 6 Schematic diagram of the BB section;

[0045] Figure 8 This is a schematic diagram of the mechanical limit lock mechanism of the present invention;

[0046] Figure 9 This is a schematic diagram of the counterweight box and balancing device of the present invention;

[0047] Figure 10 for Figure 9Front view structural diagram;

[0048] Figure 11 This is a schematic diagram of the spindle structure of the present invention;

[0049] Figure 12 This is a schematic diagram of the top self-locking device of the present invention;

[0050] Figure 13 for Figure 12 The main view structural diagram is in an unfurled state;

[0051] Figure 14 for Figure 12 The main view structural diagram shows the clamped state;

[0052] Figure 15 for Figure 14 Schematic sectional view of the CC section;

[0053] In the diagram: 1-Building frame; 2-Intermediate base; 3-Left lifting pit; 4-Right lifting pit; 5-Vertical guide rail; 6-Left counterweight box; 7-Right counterweight box; 8-Main shaft; 9-Left counterweight block; 10-Right counterweight block; 11-Traction rope; 12-Crossbeam; 13-Vertical beam; 14-Bottom locking device; 15-Top locking device; 16-Speed ​​increaser; 17-Generator; 18-Balance counterweight block; 19-Balance pulley; 20-Balance traction rope;

[0054] 6.1-Box housing; 6.2-Guide rail; 6.3-Roller; 6.4-Sliding limit groove; 6.5-Top self-locking shaft; 6.6-Bottom self-locking shaft; 6.7-Sliding limit shaft; 6.8-Motor; 6.9-Reducer; 6.10-Drive wheel; 6.11-Driven pulley; 6.12-Adjusting screw bracket; 6.13-Rope clamp; 6.14-Transfer traction rope; 6.15-Mechanical limit lock mechanism;

[0055] 8.1 - Limiting groove; 8.2 - Rope groove;

[0056] 9.1 - Load-bearing rollers;

[0057] 15.1-Drive motor; 15.2-Reinforcing rib plate; 15.3-Lead screw; 15.4-Sliding plate; 15.5-Locking wedge block; 15.6-Bearing bush; 15.7-Reset spring; 15.8-Limit rod. Detailed Implementation

[0058] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention.

[0059] Example

[0060] like Figures 1 to 4 As shown, this embodiment provides a lever-type mobile counterweight power generation device, including a building frame 1, a counterweight device, a bottom locking device 14, a top locking device 15, a shifting drive mechanism, a transmission power generation device, and a central control system.

[0061] The building frame 1 adopts a vertical shaft concrete structure with a total height of 100 meters, of which 20 meters are above ground and 80 meters are underground. Square left and right lifting pits 3 and 4 are excavated to its left and right sides, respectively, each 6 meters wide, forming a pair of vertical movement channels. A central base 2 is located at the top of the building frame 1 between a set of lifting pits. Several sets of such lifting pits can be installed along the front-to-back direction of the building frame 1 to achieve multi-unit arrangement. Vertical guide rails 5 are provided on the left and right side walls of the lifting pits. The walls of the building frame 1 adopt a differentiated load-bearing structure with an inner main load-bearing shear wall thickness of 1 meter and an outer auxiliary wall thickness of 50 centimeters, capable of withstanding loads ranging from tens to hundreds of tons.

[0062] The counterweight device comprises several sets, each set including a left counterweight box 6, a right counterweight box 7, a left counterweight block 9, and a right counterweight block 10. In this embodiment, the example dimensions of a single counterweight box are 8 meters long, 2 meters wide, and 2.5 meters high. The left counterweight box 6 is located within the left lifting pit 3, and its left and right outer walls are engaged with the vertical guide rail 5 via rollers 6.3. The right counterweight box 7 is similarly positioned within the right lifting pit 4. Each counterweight block weighs 50 tons and is made of high-density metal.

[0063] like Figures 5 to 9 As shown, taking the left counterweight box 6 as an example, a sliding limiting groove 6.4 is provided on the side wall of its box body 6.1, and a sliding limiting shaft 6.7 is provided on the side wall of the left counterweight block 9. The sliding limiting shaft 6.7 extends into the sliding limiting groove 6.4, allowing the left counterweight block 9 to be slidably positioned inside the box body 6.1. Guide rails 6.2 are provided at the top and bottom of the box body 6.1. The top and bottom of the left counterweight block 9 are engaged with the guide rails 6.2 through load-bearing rollers 9.1 to reduce horizontal movement resistance and limit its vertical movement. Several top self-locking shafts 6.5 and bottom self-locking shafts 6.6 are uniformly and alternately fixed at the bottom of the box body 6.1 for use with locking devices. The structure of the right counterweight box 7 is symmetrical and the same as that of the left counterweight box 6.

[0064] A displacement drive mechanism is installed inside each counterweight box to drive the counterweight blocks to move horizontally when the counterweight boxes are locked and stationary. In this embodiment, as shown... Figure 5-7 As shown, the transposition drive mechanism includes:

[0065] Drive unit: includes a motor 6.8 fixed to one end of the front side wall inside the counterweight box (taking the left counterweight box 6 as an example) and a reducer 6.9 connected to the output shaft of the motor 6.8. The tail of the motor 6.8 is integrated with a power-off brake, which automatically clamps the motor shaft when the power is off to prevent the counterweight from being accidentally displaced after the repositioning is completed.

[0066] Active drive wheel 6.10: connected to the output shaft of reducer 6.9 via a key.

[0067] Driven pulley 6.11: Located at the other end of the front side wall inside the counterweight box via adjusting screw bracket 6.12. Adjusting screw bracket 6.12 can finely adjust the position of driven pulley 6.11 in the horizontal direction to tension the shifting traction rope 6.14.

[0068] The displacement traction rope and connectors include a displacement traction rope 6.14 connecting the drive wheel 6.10 and the driven fixed pulley 6.11, and a rope clamp 6.13 fixed to the side wall of the counterweight 9. The front end of the rope clamp 6.13 is sleeved on the displacement traction rope 6.14. When the motor 6.8 drives the drive wheel 6.10 to rotate, the displacement traction rope 6.14 drives the rope clamp 6.13, thereby pulling the counterweight 9 to achieve precise left and right movement.

[0069] Limit switches are installed on the inner walls of both ends of the counterweight box corresponding to counterweight 9. When counterweight 9 moves to the end point, the limit signal is triggered, and the central control system controls the motor 6.8 to stop. A rotary encoder is installed at the tail of motor 6.8 or on the output shaft of reducer 6.9 to detect the horizontal position and moving speed of the counterweight in real time, and feeds it back to the central control system to achieve closed-loop control, ensuring the accuracy and synchronization of the switching.

[0070] like Figure 8 As shown, a mechanical limit lock mechanism 6.15 is provided on the other side wall of the counterweight 9 / 10. The tail is installed on the side wall of the counterweight. An electromagnetic coil switch is provided at the bottom of the housing. The coil switch has a locking tongue. The corresponding housing 6.1 has a locking groove. After the counterweight moves horizontally and is moved into position, the mechanical limit lock rigidly locks the counterweight 9 / 10 to the counterweight box 6 / 7. It does not rely on the motor brake to bear the load, preventing the counterweight from slipping or moving during the falling and generating process, and ensuring that the torque always remains constant. When the mechanical limit lock mechanism 6.15 is de-energized, the electromagnetic coil switch extends and inserts the locking tongue into the locking groove to achieve mechanical locking. When the mechanical limit lock mechanism 6.15 is energized, the electromagnetic coil switch retracts and the locking tongue is pulled out to achieve unlocking.

[0071] Locking device

[0072] The top locking device 15 is located at the upper part of the lifting pit. For example... Figures 12 to 15As shown, horizontal beams 12 are provided on the front and rear sides of the counterweight box above the lifting pit, running horizontally in the left and right directions. Several vertical beams 13 are provided vertically at the bottom of the horizontal beams 12, and the vertical beams 13 correspond to the top self-locking shafts 6.5 on the counterweight box. The vertical beams 13 are two parallel beams, with several reinforcing ribs 15.2 evenly provided in the middle.

[0073] The specific structure of the top locking device 15 is as follows: A drive motor 15.1 is inverted and fixed on the top surface of the bottom reinforcing rib plate 15.2. A sliding plate 15.4 is horizontally provided below the reinforcing rib plate 15.2, and its two ends are slidably connected to the vertical beam 13 through slider grooves. The output shaft of the drive motor 15.1 passes through the reinforcing rib plate 15.2 and is connected to a lead screw 15.3, the lower end of which is connected to the sliding plate 15.4. Locking inclined blocks 15.5 are fixed on both sides of the bottom surface of the sliding plate 15.5. The outer side wall of the locking inclined block 15.5 contacts the vertical beam 13, with a vertical gap in the middle to reserve movement space for the limiting rod 15.8. Limiting holes are symmetrically opened on the two vertical beams 13 below the locking inclined block 15.5, and the limiting rod 15.8 is inserted into the limiting holes. A return spring 15.7 is provided between the boss at the tail of the limiting rod 15.8 and the boss in the limiting hole. The front end of the limiting rod 15.8 is equipped with a thickened arc-shaped bearing bush 15.6, with the inner arc surfaces of the two bearing bushes 15.6 facing each other. The inner arc surface of the bearing bush 15.6 matches the top self-locking shaft 6.5, and a pressure sensor electrically connected to the central control system is located in the middle of the inner arc surface. The upper part of the outer arc surface of the bearing bush 15.6 is equipped with ball bearings to reduce the frictional resistance when it slides relative to the locking wedge block 15.5, and to prevent jamming during wedging.

[0074] When the drive motor 15.1 drives the lead screw 15.3 to lower the sliding plate 15.4, the locking wedge 15.5 presses against the two arc-shaped bearing bushes 15.6, causing them to extend horizontally and clamp the top self-locking shaft 6.5, thus achieving mechanical locking. A pressure sensor provides feedback on the locking force to ensure reliable locking. When unlocking is required, the drive motor 15.1 reverses, the sliding plate 15.4 rises, the locking wedge 15.5 disengages from the bearing bushes 15.6, and the bearing bushes 15.6 automatically retract under the action of the return spring 15.7, releasing the lock.

[0075] The bottom locking device 14 is located at the bottom of the lifting pit. An installation pit is formed on the bottom surface of the lifting pit, and a vertical installation beam is installed within the pit, its position corresponding to the bottom self-locking shaft 6.6 on the counterweight box. The bottom locking device 14 is located at the top of the installation beam, and its specific structure is the same as the top locking device 15, which will not be described again here. When the counterweight box falls close to the bottom, the remaining kinetic energy can be absorbed by the buffer component (such as a polyurethane buffer block, not shown in the figure) located at the bottom, achieving a soft landing.

[0076] Drive-generating device

[0077] The transmission-generating device includes a main shaft 8, a speed increaser 16, and a generator 17. The main shaft 8 is horizontally mounted on the intermediate base 2 along the front-to-back direction via bearings. Figure 11 As shown, the main shaft 8 is a rigid heavy-duty main shaft with several evenly spaced limiting grooves 8.1. Each limiting groove 8.1 contains a rope groove 8.2 to prevent the entangled traction rope 11 from overlapping or biting. The left end of the traction rope 11 is connected to the left counterweight 9, and the right end is connected to the right counterweight 10. One end of the main shaft 8 is connected to the input shaft of the speed increaser 16 via a coupling, and the output shaft of the speed increaser 16 is connected to the rotating shaft of the generator 17 via a coupling. A speed limiter is installed on the output shaft of the speed increaser 16 to maintain the counterweight box falling at a uniform speed. The output of the generator 17 is connected to the power grid after passing through a full-power converter to adapt to the forward and reverse rotation of the main shaft and output stable electrical energy.

[0078] Central control system

[0079] The central control system is electrically connected to the bottom locking device 14, the top locking device 15, the shift drive mechanism (motor 6.8, etc.) and the transmission power generation device (such as speed limiter, full power converter) to control each mechanism to execute precise cyclic logic.

[0080] Working process of the present invention

[0081] The system operates strictly following the sequential logic of "position locking → stationary position switching → synchronous unlocking → descent and power generation", which is forcibly executed by the central control system.

[0082] Position locking: Assume the initial state is that the left counterweight box 6 is at the top (with its inner left counterweight block 9 on the right side) and the right counterweight box 7 is at the bottom (with its inner right counterweight block 10 on the right side). The central control system controls the top locking device 15 to lock the top self-locking shaft 6.5 on the left counterweight box 6, while the bottom locking device 14 locks the bottom self-locking shaft 6.6 on the right counterweight box 7. The pressure sensor provides feedback of the locking position signal.

[0083] Static repositioning: After the central control system confirms that both sides are locked in place, the mechanical limit lock mechanism is de-energized, unlocking the counterweight. This commands the upper and lower counterweight boxes 6 and 7, along with counterweights 9 and 10, to unlock simultaneously. The repositioning drive mechanisms within both counterweight boxes are then activated synchronously. In the left counterweight box 6, motor 6.8 drives the drive wheel 6.10, which, via the repositioning traction rope 6.14 and rope clamp 6.13, moves the left counterweight 9 horizontally to the left to the other end of the counterweight box. Once in position, the travel limit switch stops motor 6.8, halting the movement of the left counterweight 9. At this point, the mechanical limit lock mechanism is energized and extends into the corresponding slot, locking the left counterweight 9 horizontally. Simultaneously, in the right counterweight box 7, its repositioning drive mechanism moves synchronously in the same direction as the upper counterweight, keeping the bottom counterweight in the near-arm position within the right lifting pit 4. The single horizontal rolling repositioning distance is 8 meters. During the repositioning process, the rotary encoder and travel limit switch ensure precise positioning. After the transposition is completed, the power-off brake of motor 6.8 engages to prevent the counterweight from shifting. After the counterweight has completed its horizontal transposition, it is self-locked to the counterweight box via a built-in mechanical limit lock mechanism 6.15, forming a stable and rigid whole. Only after locking can the subsequent unlocking and power-generating process begin, preventing the counterweight from slipping or shifting during the generator's descent and ensuring that the overall torque remains constant. This process consumes extremely little energy.

[0084] Synchronous Unlocking and Drop-to-Generate Power Generation: After the swap is completed, the central control system reverses the drive motors 15.1 of the top locking device 15 and the bottom locking device 14, simultaneously unlocking them. After unlocking, the left counterweight box 6 at the top begins to fall due to the torque difference (center of gravity away from the main shaft). The left counterweight box 6 drives the main shaft 8 to rotate via the traction rope 11, thereby driving the generator 17 to generate electricity. At the same time, the rotation of the main shaft 8 pulls the right counterweight box 7 at the bottom back to its original position via the traction rope 11 on the other side. The speed limiter ensures a stable falling speed.

[0085] Buffer locking and alternating cycles: When the left counterweight box 6 falls to the bottom, the buffer assembly achieves a soft landing, and the bottom locking device 14 locks it. At the same time, the right counterweight box 7 is raised to the top, and the top locking device 15 locks it. At this point, the positions of the two counterweight boxes are interchanged. During the new round of repositioning, they are repositioned, always maintaining the upper counterweight as the outer long lever arm and the lower counterweight as the generator shaft center near lever arm, with both counterweights moving in the same direction, repeating the cycle continuously.

[0086] Multiple generating units operating in shifts

[0087] This system comprises multiple sets of the aforementioned power generation units arranged along the front-rear direction of the building frame 1. Each set of counterweight devices is equipped with an independent main shaft 8, and each main shaft 8 is coaxially mounted on the intermediate base 2, mechanically independent of each other. The central control system performs staggered timing control on the working cycles of each set. For example, when the first set of units is in the descent power generation phase, the second set of units is performing static repositioning, and the third set of units is preparing to unlock and descend. The outputs of each set of generators 17 are electrically combined after passing through their respective full-power converters, thereby achieving continuous and stable total output power to meet grid-connected power generation requirements.

[0088] Counterweight box balancing device

[0089] To further improve the operational stability of the large-tonnage counterweight box, this embodiment also includes a counterweight box balancing device. For example... Figure 8 , Figure 9 As shown, the device includes a counterweight 18, two fixed pulleys 19, and a traction rope 20. One fixed pulley 19 is mounted on a base directly above the end of the counterweight box away from the main shaft 8 (located above the building frame 1), while the other is mounted at the same horizontal level, positioned in front of / behind the counterweight box. One end of the traction rope 20 is connected to the edge of the counterweight box directly below, passes around the two fixed pulleys 19 in sequence, and the other end is connected to the counterweight 18, placing the counterweight 18 in front of / behind the counterweight box. This device is used to balance the lateral tilting torque that may be generated during the vertical movement of the counterweight box due to the tension of the traction rope and the position of the counterweight at one end inside the counterweight box, ensuring the contact accuracy between the roller 6.3 and the vertical guide rail 5 and reducing frictional loss.

[0090] Energy accounting

[0091] Taking a single unit, a single 50-ton counterweight, and a 100-meter drop height as an example: the potential energy released during the fall is approximately 49,000,000 joules (13.61 kWh). After deducting generator efficiency, transmission friction, traction rope bending losses, and energy consumption per repositioning cycle (approximately 0.3 kWh), the actual net output energy per cycle can reach 9.5 to 10.8 kWh, far exceeding the total repositioning and friction losses, demonstrating excellent economic feasibility and continuous operation capability.

[0092] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A lever-type mobile counterweight gravity power generation device, characterized in that, include: Building frame (1), the building frame (1) has a set of square left lifting pits (3) and right lifting pits (4) excavated in the left and right directions respectively, the top of the building frame (1) between the set of lifting pits is provided with a middle base (2), and vertical guide rails (5) are provided on the left and right side walls of the lifting pits. The building frame (1) has several sets of lifting pits along the front and back directions. Several sets of counterweight devices, each set of counterweight devices includes a left counterweight box (6), a right counterweight box (7), a left counterweight block (9) and a right counterweight block (10). The left counterweight box (6) is located in the left lifting pit (3), and the left and right outer walls of the left counterweight box (6) are rolled in cooperation with the vertical guide rail (5) inside through rollers (6.3). The left counterweight block (9) is slidably disposed in the left counterweight box (6) in the left and right directions through the sliding limit shaft (6.7). The right counterweight box (7) is located in the right lifting pit (4), and the left and right outer walls of the right counterweight box (7) are slidably cooperated with the vertical guide rail (5) inside through rollers (6.3). The right counterweight block (10) is slidably disposed in the right counterweight box (7) in the left and right directions through the sliding limit shaft (6.7). Bottom locking device (14) is provided at the bottom of the lifting pit (3 / 4) to lock the counterweight box (6 / 7) that reaches the bottom of the lifting pit (3 / 4); A top locking device (15) is provided in the upper part of the lifting pit (3 / 4) to lock the counterweight box (6 / 7) that reaches the top of the lifting pit (3 / 4); The shifting drive mechanism is provided in each counterweight box (6 / 7) to drive the counterweight block (9 / 10) inside it to move horizontally to change the torque when the counterweight box (6 / 7) is locked by the bottom locking device (14) or the top locking device (15) in a static state. The transmission power generation device includes several main shafts (8), speed increasers (16) and generators (17). Each set of counterweight devices corresponds to one main shaft (8), which is horizontally set on the intermediate base (2) in the front-back direction through bearings. One end of the main shaft (8) is connected to the input shaft of the speed increaser (16) through a coupling. The output shaft of the speed increaser (16) is connected to the rotating shaft of the generator (17) through a coupling. A speed limiter is provided on the output shaft of the speed increaser (16). The output end of the generator (17) is connected to a full-power converter and then connected to the power grid. Several limiting grooves (8.1) are evenly provided on the main shaft (8). A traction rope (11) is wound in each limiting groove (8.1). The left end of the traction rope (11) is connected to the left counterweight (9), and the right end is connected to the right counterweight (10). It is used to convert the kinetic energy of the falling counterweight box (6 / 7) into electrical energy. The central control system is electrically connected to the bottom locking device (14), the top locking device (15), the shifting drive mechanism, and the transmission power generation device. It is used to control each mechanism to perform the following cycle: after a pair of counterweight boxes (6 / 7) reach the top and bottom respectively and are locked, the shifting drive mechanism is controlled to synchronously drive each counterweight block (9 / 10) to shift horizontally; after the shifting is completed, the bottom locking device (14) and the top locking device (15) are controlled to unlock synchronously, so that the top counterweight box falls to do work and drives the bottom counterweight box to reset and rise. Among them, multiple pairs of counterweight boxes (6 / 7) operate in turn under the staggered timing control of the central control system to achieve continuous power generation.

2. The power generation device according to claim 1, characterized in that, The main shaft (8) is a rigid heavy-duty main shaft, and the limiting groove (8.1) is provided with a rope groove (8.2) to prevent the traction rope (11) from overlapping or biting.

3. The power generation device according to claim 1, characterized in that, The counterweight box (6 / 7) has sliding limiting grooves (6.4) on its front and rear side walls. The counterweight block (9 / 10) has a sliding limiting shaft (6.7) on its side wall. The sliding limiting shaft (6.7) extends into the sliding limiting groove (6.4) so ​​that the counterweight block (9 / 10) slides in the counterweight box (6 / 7). The bottom of the box body (6.1) is uniformly and alternately fixed with a number of top self-locking shafts (6.5) and bottom self-locking shafts (6.6). The displacement drive mechanism is located on one side of the counterweight (9 / 10) and includes: Drive unit: includes a motor (6.8) fixed to one end of the front side wall inside the counterweight box (6 / 7) and a reducer (6.9) connected to the output shaft of the motor (6.8). The tail of the motor (6.8) is integrated with a power-off brake, which automatically clamps the motor shaft when the power is off to prevent the counterweight (9 / 10) from being accidentally displaced after the repositioning is completed. Drive wheel (6.10): connected to the output shaft of the reducer (6.9) via a key; Driven fixed pulley (6.11): It is set at the other end of the front side wall inside the counterweight box (6 / 7) by adjusting screw bracket (6.12). The position of driven fixed pulley (6.11) can be slightly adjusted in the horizontal direction by adjusting screw bracket (6.12) to tension the shifting traction rope (6.14). The displacement traction rope and connectors include a displacement traction rope (6.14) that connects the drive wheel (6.10) and the driven fixed pulley (6.11), and a rope clamp (6.13) whose tail is fixed on the side wall of the counterweight (9 / 10). The front end of the rope clamp (6.13) is sleeved on the displacement traction rope (6.14) to realize the left and right traction movement of the counterweight (9 / 10). Limit switches are installed on the inner walls of the counterweight box (6 / 7) at both ends corresponding to the counterweight (9 / 10). When the counterweight (9 / 10) moves to the end point, the limit signal is triggered, and the motor (6.8) is stopped by the central control system. A mechanical limit lock mechanism (6.15) is provided on the other side wall of the counterweight (9 / 10). After the counterweight moves horizontally and is moved into position, the mechanical limit lock will rigidly lock the counterweight (9 / 10) and the counterweight box (6 / 7) together. The counterweight does not rely on the motor brake to bear the load, preventing the counterweight from slipping or moving during the falling and generating process, and ensuring that the torque remains constant.

4. The power generation device according to claim 3, characterized in that, The top and bottom of the counterweight box (6 / 7) are equipped with guide rails (6.2), and the top and bottom of the counterweight block (9 / 10) are in rolling cooperation with the guide rails (6.2) through load-bearing rollers (9.1). A rotary encoder is installed at the tail of the motor (6.8) or on the output shaft of the reducer (6.9) to detect the horizontal position and moving speed of the counterweight block (9 / 10) in real time and feed it back to the central control system to realize closed-loop control.

5. The power generation device according to claim 1, characterized in that, A horizontal beam (12) is provided on the front and rear sides of the counterweight box (6 / 7) above the lifting pit (3 / 4) along the left and right directions. Several vertical beams (13) are provided vertically at the bottom of the horizontal beam (12). The vertical beams (13) correspond to the top self-locking shaft (6.5). The top locking device (15) is set at the bottom of the vertical beams (13). The vertical beams (13) are two parallel beams with several reinforcing ribs (15.2) evenly provided in the middle. The top surface of the bottom reinforcing ribs (15.2) is fixedly inverted with a drive motor (15.1). A sliding plate (15.4) is provided horizontally below the reinforcing ribs (15.2). The two ends of the sliding plate (15.4) are slidably connected to the vertical beams (13) through the slider groove. The output shaft of the drive motor (15.1) passes through the reinforcing ribs (15.2) and is connected to a lead screw (15.3). The lower end of the lead screw (15.3) is connected to the vertical beam (13). A sliding plate (15.4) is connected, and locking inclined blocks (15.5) are fixed on both sides of the bottom surface of the sliding plate (15.4). The outer wall of the locking inclined block (15.5) contacts the vertical beam (13). A vertical gap is left in the middle of the locking inclined block (15.5). Limiting holes are symmetrically opened on the two vertical beams (13) below the locking inclined block (15.5). A limiting rod (15.8) is inserted into the limiting hole. A return spring (15.7) is provided between the boss at the tail of the limiting rod (15.8) and the boss of the limiting hole. A thickened arc-shaped bearing (15.6) is provided at the front end of the limiting rod (15.8). The inner arc surfaces of the two bearings (15.6) are opposite each other. The inner arc surface of the bearing (15.6) matches the top self-locking shaft (6.5). A pressure sensor is provided in the middle of the inner arc surface of the bearing (15.6). The pressure sensor is electrically connected to the central control system.

6. The power generation device according to claim 5, characterized in that, The upper part of the outer arc surface of the bearing bush (15.6) is provided with ball bearings, so that when it slides against the locking wedge block (15.5), it is a rolling friction, which reduces the pushing and pulling resistance of the locking wedge block (15.5) and avoids jamming when wedged in.

7. The power generation device according to claim 1, characterized in that, An installation pit is provided on the bottom surface of the lifting pit (3 / 4), and an installation beam is vertically provided in the pit. The position of the installation beam corresponds to the bottom self-locking shaft (6.6). A bottom locking device (14) is provided on the top of the installation beam. The bottom locking device (14) has the same structure as the top locking device (15).

8. The power generation device according to claim 1, characterized in that, It also includes a counterweight box balancing device, including a counterweight block (18), two fixed pulleys (19) and a balancing traction rope (20). One of the fixed pulleys (19) is set on a base directly above one end of the counterweight box (6 / 7) away from the main shaft (8) and above the building frame (1). The other is set at the same horizontal height and is located on the front / rear side of the counterweight box (6 / 7). One end of the balancing traction rope (20) is connected to the edge of the counterweight box (6 / 7) directly below. After passing around the two fixed pulleys (19) in sequence, the other end is connected to the counterweight block (18), so that the counterweight block (18) is located on the front / rear side of the counterweight box (6 / 7).

9. The power generation device according to claim 1, characterized in that, Each counterweight device is equipped with an independent main shaft (8), and each main shaft is coaxially mounted on the intermediate base (2); each counterweight device is mechanically independent of each other and is controlled by the central control system to stagger the peak load.

10. The power generation device according to claim 1, characterized in that, The building frame (1) is a vertical shaft concrete structure, which adopts an inner main load-bearing shear wall and an outer auxiliary wall to form a differentiated load-bearing structure.

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