Self-charging wireless remote control hydraulic grab

Abstract

The application belongs to the technical field of material grabbing equipment, and particularly relates to a self-charging wireless remote control hydraulic grab bucket, which comprises two symmetrically arranged bucket body assemblies, a lower support beam assembly, a middle support beam assembly, an upper support beam assembly, a balance frame assembly, two lifting steel wire ropes, a hydraulic drive assembly and a battery assembly, further comprises a pulley frame, a guide pulley, a transmission assembly and a generator assembly, the guide pulley frame is fixed on the upper surface of the lower support beam assembly, the guide pulley is arranged on the inner side of the guide pulley frame, the guide pulley is provided with a rotating shaft, and the rotating shaft is rotationally connected with the side wall of the pulley frame. The application can realize self-supply of power to the battery assembly during the grab bucket operation process, reduce the downtime and power supply waiting time, adapt to the operation scenes such as the field, the non-power supply and the matching cabin, and can inhibit the sudden change of the rotating speed of the guide pulley, relieve the instantaneous impact of the mechanism and improve the opening and closing operation stability of the grab bucket.

Description

Technical Field

[0001] This invention belongs to the technical field of material handling equipment, and in particular relates to a self-charging wireless remote-controlled hydraulic grab. Background Technology

[0002] Hydraulic grabs are core engineering machinery working devices for bulk material loading and unloading operations. They rely on hydraulic drive to open and close the bucket to complete the material grabbing and unloading operations. They are widely used in ports, docks, bulk cargo ships, mines, factories and other scenarios. They are mainly used to load, unload and transfer bulk materials such as ore, sand and gravel and grain. During operation, the battery of the remote-controlled hydraulic grab will continuously consume power. After the power is exhausted, the battery needs to be recharged and maintained in time.

[0003] Currently, the most common charging methods used in the industry are on-site charging with an external power source or removing the battery and transferring it to a charging station for charging. However, in field operations, bulk cargo ships without supporting power supply facilities, and other scenarios lacking fixed charging equipment, these charging methods are subject to limitations. Once the battery is depleted, the equipment can only suspend loading and unloading operations to wait for charging, causing an interruption in the work process and adversely affecting the continuous working time and overall work efficiency. At the same time, during the opening and closing of the grab, the transmission pulley is prone to sudden changes in speed, and the mechanism experiences instantaneous impact, which reduces the smoothness of the grab's opening and closing action. Summary of the Invention

[0004] The purpose of this invention is to address the above-mentioned problems by providing a self-charging wireless remote-controlled hydraulic grab.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a self-charging wireless remote-controlled hydraulic grab bucket, comprising two symmetrically arranged bucket body components, a lower support beam component, a middle support beam component, an upper support beam component, a balance frame component, two lifting wire ropes, a hydraulic drive component and a battery component, and further comprising a pulley frame, a guide pulley, a transmission component and a generator component;

[0006] The pulley bracket is fixed to the upper surface of the lower support beam assembly;

[0007] The guide pulley is located inside the pulley frame. The guide pulley is equipped with a rotating shaft, and the rotating shaft is rotatably connected to the side wall of the pulley frame. The movable end of the lifting wire rope passes around the lower side wall of the corresponding guide pulley and is connected to the central support beam assembly.

[0008] The transmission component is located at one end of the rotating shaft;

[0009] The generator assembly is located on one side of the pulley frame, and the rotating shaft is connected to the input end of the generator assembly via a transmission assembly. The pulley frame is equipped with a buffer and shock absorption unit, and the generator assembly is installed inside the buffer and shock absorption unit. The generator assembly charges the battery assembly.

[0010] Preferably, the transmission assembly includes a transmission shaft, a gear ring, a cylindrical gear, a speed increaser, and a telescopic assembly; the transmission shaft is connected to the rotating shaft via the telescopic assembly, the gear ring is fixedly sleeved on the outside of the transmission shaft, the cylindrical gear meshes with the gear ring, the speed increaser is disposed inside the buffer and shock absorption unit, the input end of the speed increaser is connected to the axle of the cylindrical gear, and the output end of the speed increaser is connected to the input end of the generator assembly.

[0011] Preferably, the telescopic assembly includes a shaft end plate, a telescopic shaft, and a plurality of telescopic protrusions; the shaft end plate is fixed to the end of the transmission shaft, the telescopic shaft is fixed to the side wall of the shaft end plate, the plurality of telescopic protrusions are evenly distributed in a ring on the shaft wall of the telescopic shaft, the end of the rotating shaft is provided with a telescopic groove that matches the telescopic shaft, and the groove wall of the telescopic groove is provided with a plurality of sliding grooves that match the telescopic protrusions.

[0012] Preferably, the buffer and shock absorption unit includes a right end plate, a left end plate, an annular plate, and a damping shock absorber; the right end plate is movably sleeved on the outside of the transmission shaft, the annular plate is fixed to the side wall of the right end plate, the gear ring, cylindrical gear, speed increaser, and generator assembly are all disposed on the inside of the annular plate, the left end plate is fixed to the end of the annular plate, a fixing frame is fixed to the side wall of the left end plate, the generator assembly and speed increaser are both fixedly connected to the fixing frame, the damping shock absorber is fixed to the side wall of the pulley frame, and the movable end of the damping shock absorber is fixedly connected to the side wall of the right end plate, and a heat dissipation mechanism connected to the left end plate is installed on the side wall of the pulley frame.

[0013] Preferably, the heat dissipation mechanism includes an outer protective sleeve, a support frame, a hydraulic exhaust assembly, and an air injection pipe; the outer protective sleeve is slidably sleeved on the outside of the annular plate and fixed to the side wall of the pulley frame, the side wall of the outer protective sleeve has multiple heat dissipation holes, the support frame is fixed inside the outer protective sleeve, the hydraulic exhaust assembly is fixed inside the support frame, the air outlet of the hydraulic exhaust assembly is connected to the air injection pipe, and the side wall of the left end plate has an air injection hole connected to the air injection pipe.

[0014] Preferably, the hydraulic exhaust assembly includes a cylinder, an exhaust piston, and a cylinder end plate; the cylinder is fixed inside the support frame, the side wall of the cylinder has an air inlet hole, and an air inlet check valve is installed inside the air inlet hole; the exhaust piston is slidably disposed inside the cylinder, the air injection pipe passes through the side wall of the exhaust piston, an air outlet check valve is installed inside the air injection pipe, the cylinder end plate is fixed to the end of the cylinder, and the air injection pipe slides through the side wall of the cylinder end plate.

[0015] Preferably, the outer protective sleeve is provided with a shielding sleeve on the outer side, the shielding sleeve is fixedly connected to the side wall of the outer protective sleeve, and the heat dissipation hole is provided on the inner side of the shielding sleeve.

[0016] Preferably, the power supply terminal of the generator assembly is electrically connected to a voltage regulator, a reverse charging protection diode, and a power detection module, and the generator assembly is electrically connected to the battery assembly through the voltage regulator, the reverse charging protection diode, and the power detection module.

[0017] Compared with existing technologies, the present invention has the following advantages:

[0018] 1. This invention, through the design of a pulley frame, guide pulley, transmission assembly, and generator assembly, enables the hoisting wire rope to reciprocate during the opening and closing of the grab bucket. This reciprocating motion drives the guide pulley and rotating shaft to rotate synchronously. The rotating shaft transmits the rotational power to the generator assembly via the transmission assembly to generate electricity. This eliminates the need for external charging equipment to replenish the battery pack, reducing the waiting time for equipment shutdown and power replenishment, lowering energy consumption, and ensuring that the grab bucket can continuously carry out loading and unloading operations in the field or in situations where there is no power supply. At the same time, the rotational resistance generated by the generator on the guide pulley creates rotational damping during the opening and closing of the grab bucket, which can alleviate the instantaneous impact during the opening and closing of the grab bucket and improve the operational stability of the grab bucket opening and closing action.

[0019] 2. This invention utilizes a buffer and shock absorption unit and a telescopic assembly. The telescopic assembly, through the cooperation of the telescopic shaft, telescopic protrusion, telescopic groove, and sliding groove, can compensate for axial position deviations caused by assembly and operational vibrations between the transmission shaft and the rotating shaft while transmitting torque, thus preventing transmission jamming and gear meshing misalignment. The damping shock absorber in the buffer and shock absorption unit can absorb the impact vibrations transmitted to the speed increaser and generator assembly during grab bucket operation, reducing the wear of vibrations on the gear meshing pairs and the precision components inside the generator assembly, and extending the service life of the transmission assembly and generator assembly.

[0020] 3. The present invention incorporates a heat dissipation mechanism, a voltage regulator, an anti-reverse charging diode, and an energy detection module. The heat dissipation mechanism utilizes the vibration of the grab bucket operation to drive the hydraulic exhaust assembly to generate airflow. The airflow passes through the air injection pipe and air injection hole into the interior of the annular plate. Together with the heat dissipation holes on the outer protective sleeve, it removes the heat generated by the speed increaser and generator assembly, thereby minimizing the impact of high temperature on power generation efficiency. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of a self-charging wireless remote-controlled hydraulic grab provided by the present invention;

[0022] Figure 2 This is a three-dimensional structural diagram of the pulley frame provided by the present invention;

[0023] Figure 3 This is a schematic diagram of the connection structure between the guide pulley and the pulley frame provided by the present invention;

[0024] Figure 4 This is a schematic diagram showing the position of the annular plate provided by the present invention;

[0025] Figure 5 This is a schematic diagram of the internal structure of the annular plate provided by the present invention;

[0026] Figure 6 This invention provides Figure 5 Enlarged view of the structure of section A;

[0027] Figure 7 This is a schematic diagram of the hydraulic exhaust assembly provided by the present invention;

[0028] Figure 8 This is a schematic diagram showing the location of the heat dissipation holes provided by the present invention;

[0029] Figure 9 This is a connection block diagram of the generator assembly and the battery assembly provided by the present invention.

[0030] In the diagram: 1. Bucket body assembly; 2. Lower support beam assembly; 3. Middle support beam assembly; 4. Upper support beam assembly; 5. Balance frame assembly; 6. Lifting wire rope; 7. Hydraulic drive assembly; 8. Battery assembly; 9. Pulley frame; 10. Guide pulley; 11. Transmission assembly; 111. Drive shaft; 112. Gear ring; 113. Cylindrical gear; 114. Speed ​​increaser; 12. Generator assembly; 13. Rotating shaft; 14. Buffer and shock absorption unit; 141. Right end plate; 142. Left end plate; 143. Annular plate; 144. Damping shock absorber; 145. Fixing frame; 5. Telescopic assembly; 151. Shaft end plate; 152. Telescopic shaft; 153. Telescopic protrusion; 154. Telescopic groove; 155. Slide groove; 16. Heat dissipation mechanism; 161. Outer protective sleeve; 162. Support frame; 163. Air injection pipe; 164. Heat dissipation hole; 165. Air injection port; 17. Hydraulic exhaust assembly; 171. Cylinder; 172. Exhaust piston; 173. Cylinder end plate; 174. Air inlet; 175. Inlet check valve; 176. Outlet check valve; 18. Shielding sleeve; 19. Voltage regulator; 20. Anti-reverse charging diode; 21. Power detection module. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] like Figures 1-4 as well as Figure 9 As shown, a self-charging wireless remote-controlled hydraulic grab bucket includes two symmetrically arranged bucket body assemblies 1, a lower support beam assembly 2, a middle support beam assembly 3, an upper support beam assembly 4, a balance frame assembly 5, two lifting wire ropes 6, a hydraulic drive assembly 7, and a battery assembly 8. The bucket body assembly 1 mainly includes left and right bucket segments, bucket segment reinforcing ribs, and bucket segment hinge ear plates. The two bucket segments are rotatably assembled with the lower support beam assembly 2 via hinge pins. The lower support beam assembly 2 mainly includes a lower support beam body, a strut hinge seat, and a bottom wear-resistant protective plate, providing a hinged installation reference for the bucket body assembly 1. The middle support beam assembly 3 mainly includes a middle support beam body. The hydraulic cylinder mounting base and the hinged support on the strut are used to assemble the hydraulic drive assembly 7 and connect the strut components; the upper beam assembly 4 mainly includes the upper beam body, the wire rope pulley, and the upper hinged lug, and the upper beam assembly 4 is hinged to the balance frame assembly 5; the balance frame assembly 5 mainly includes the balance frame body, the lifting hinge pin, and the lifting ring, and the upper part of the balance frame assembly 5 is used to connect to the hook of the lifting equipment, and the lower part is hinged to suspend the upper beam assembly 4; the hydraulic drive assembly 7 mainly includes the hydraulic cylinder and the hydraulic control valve group, the cylinder body of the hydraulic cylinder is fixed on the lower beam assembly 2, and the movable end is relatively fixed to the middle beam assembly 3;

[0033] When the two grabs of the bucket assembly 1 are to be opened, a command is sent via remote control, the hydraulic control valve group reverses, and the piston rod of the hydraulic cylinder of the hydraulic drive assembly 7 extends outward to push the lower support beam assembly 2 to move downward relative to the middle support beam assembly 3. At the same time, the hoisting wire rope 6 is released, and the support rod connected between the middle support beam assembly 3 and the lower support beam assembly 2 is opened outward, which drives the bucket petals of the two bucket assemblies 1 to swing outward with the hinge position with the lower support beam assembly 2 as the rotation fulcrum, so as to realize the opening of the grab bucket petals and complete the unloading action. During this process, the hoisting wire rope 6 is passively released following the movement of the grab bucket mechanism.

[0034] When bucket assembly 1 wants to close, a control signal is output via remote control, the hydraulic control valve group reverses, and the hydraulic cylinder piston rod of hydraulic drive assembly 7 retracts. At the same time, the lifting wire rope 6 is retracted. After the middle support beam assembly 3 moves down to the position, the lifting wire rope 6 pulls the middle support beam assembly 3, hydraulic drive assembly 7, and lower support beam assembly 2 upward. The support rod retracts inward, driving the two sets of bucket petals to rotate and retract inward. When the bucket petals contact the material, the lifting equipment retracts the rope upward. The lifting wire rope 6 pulls the upper support beam assembly 4 and middle support beam assembly 3 upward, further pressing and closing the bucket petals, clamping the bulk material inside, thus completing the material grabbing operation.

[0035] The device also includes a pulley frame 9, a guide pulley 10, a transmission assembly 11, and a generator assembly 12. The pulley frame 9 is fixed to the upper surface of the lower support beam assembly 2. The guide pulley 10 is located inside the pulley frame 9 and is equipped with a rotating shaft 13, which is rotatably connected to the side wall of the pulley frame 9. The movable end of the lifting wire rope 6 passes over the lower side wall of the corresponding guide pulley 10 and is connected to the middle support beam assembly 3. The transmission assembly 11 is located at one end of the rotating shaft 13. The generator assembly 12 is located on one side of the pulley frame 9, and the rotating shaft 13 is connected to the input end of the generator assembly 12 through the transmission assembly 11. The pulley frame 9 is equipped with a buffer and shock absorption unit 14, and the generator assembly 12 is installed inside the buffer and shock absorption unit 14. The generator assembly 12 charges the battery assembly 8.

[0036] In actual operation, this embodiment uses the opening and closing of the grab bucket and the lifting operation to drive the hoisting wire rope 6 to reciprocate, thereby driving the guide pulley 10 and the rotating shaft 13 to rotate. The rotating shaft 13 outputs rotational power to the transmission component 11, which drives the generator component 12 to operate and generate electrical energy, which can replenish the battery component 8. The input end of the generator has rotational resistance, which can form a certain rotational damping on the guide pulley 10, suppressing sudden changes in the rotational speed of the guide pulley 10 to a certain extent, mitigating instantaneous impact on the mechanism, and improving the stability of the grab bucket opening and closing operation.

[0037] like Figure 5 and Figure 6 As shown, in this embodiment, the transmission assembly 11 includes a transmission shaft 111, a gear ring 112, a cylindrical gear 113, a speed increaser 114, and a telescopic assembly 15. The transmission shaft 111 is connected to the rotating shaft 13 via the telescopic assembly 15. The gear ring 112 is fixedly sleeved on the outside of the transmission shaft 111. The cylindrical gear 113 meshes with the gear ring 112 for transmission. The speed increaser 114 is disposed inside the buffer and shock absorption unit 14. The input end of the speed increaser 114 is connected to the axle of the cylindrical gear 113 for transmission, and the output end of the speed increaser 114 is connected to the input end of the generator assembly 12 for transmission.

[0038] In actual operation, this embodiment transmits torque through the meshing of gear ring 112 and cylindrical gear 113, and then the speed increaser 114 amplifies the input speed. Since the speed of guide pulley 10 is relatively low in actual operation, the speed increaser 114 can meet the working speed requirements of generator assembly 12 as much as possible.

[0039] like Figure 5 and Figure 6As shown, in this embodiment, the telescopic assembly 15 further includes a shaft end plate 151, a telescopic shaft 152, and a plurality of telescopic protrusions 153; the shaft end plate 151 is fixed to the end of the transmission shaft 111, the telescopic shaft 152 is fixed to the side wall of the shaft end plate 151, and the plurality of telescopic protrusions 153 are evenly distributed in a ring on the shaft wall of the telescopic shaft 152. The end of the rotating shaft 13 is provided with a telescopic groove 154 that matches the telescopic shaft 152, and the groove wall of the telescopic groove 154 is provided with a plurality of sliding grooves 155 that match the telescopic protrusions 153. The telescopic shaft 152 has an axial travel of 8 mm along the direction of the telescopic groove 154.

[0040] In actual operation, this embodiment transmits the torque between the rotating shaft 13 and the transmission shaft 111 by interlocking the telescopic protrusion 153 and the slide groove 155. At the same time, the telescopic shaft 152 can generate a small amount of axial sliding inside the telescopic groove 154, which can compensate for the axial position offset caused by the assembly error of the parts and the vibration of the operation, and minimize the possibility of meshing misalignment and transmission jamming between the gear ring 112 and the cylindrical gear 113.

[0041] like Figures 4-6 As shown, further in this embodiment, the buffer and shock absorption unit 14 includes a right end plate 141, a left end plate 142, an annular plate 143, and a damping shock absorber 144; the right end plate 141 is movably sleeved on the outside of the transmission shaft 111, the annular plate 143 is fixed to the side wall of the right end plate 141, the gear ring 112, the cylindrical gear 113, the speed increaser 114, and the generator assembly 12 are all disposed on the inside of the annular plate 143, the left end plate 142 is fixed to the end of the annular plate 143, a fixing frame 145 is fixed to the side wall of the left end plate 142, the generator assembly 12 and the speed increaser 114 are both fixedly connected to the fixing frame 145, the damping shock absorber 144 is fixed to the side wall of the pulley frame 9, and the movable end of the damping shock absorber 144 is fixedly connected to the side wall of the right end plate 141, and a heat dissipation mechanism 16 connected to the left end plate 142 is installed on the side wall of the pulley frame 9.

[0042] In actual operation, this embodiment uses multiple sets of damping shock absorbers 144 to provide elastic support for the annular plate 143, the speed increaser 114, and the generator assembly 12. After the impact vibration generated by the grab operation is transmitted to the pulley frame 9, the damping shock absorber 144 can consume some of the vibration energy, minimize the direct transmission of vibration to the precision parts of the speed increaser 114 and the generator assembly 12, and delay the wear and tear on the gears and internal components of the generator.

[0043] like Figure 7 and Figure 8As shown, in this embodiment, the heat dissipation mechanism 16 includes an outer protective sleeve 161, a support frame 162, a hydraulic exhaust assembly 17, and an air injection pipe 163. The outer protective sleeve 161 is slidably sleeved on the outside of the annular plate 143 and fixed to the side wall of the pulley frame 9. The side wall of the outer protective sleeve 161 is provided with a plurality of heat dissipation holes 164. The support frame 162 is fixed inside the outer protective sleeve 161. The hydraulic exhaust assembly 17 is fixed inside the support frame 162. The air outlet end of the hydraulic exhaust assembly 17 is connected to the air injection pipe 163. The side wall of the left end plate 142 is provided with an air injection hole 165 connected to the air injection pipe 163.

[0044] In actual operation, this embodiment uses the vibration generated by the grab bucket operation to drive the right end plate 141 to reciprocate slightly, thereby driving the hydraulic exhaust assembly 17 to complete the intake and exhaust actions. The airflow is sent into the interior of the annular plate 143 through the air injection pipe 163 and air injection hole 165, carrying away the heat generated by the speed increaser 114 and generator assembly 12 during operation. The hot airflow is then discharged outward through the heat dissipation hole 164, minimizing the working temperature rise in the sealed cavity of the annular plate 143 and reducing the adverse effects of high temperature on internal components.

[0045] like Figure 7 As shown, in this embodiment, the hydraulic exhaust assembly 17 further includes a cylinder 171, an exhaust piston 172, and a cylinder end plate 173. The cylinder 171 is fixed inside the support frame 162. An air inlet 174 is provided on the side wall of the cylinder 171, and an air inlet check valve 175 is installed inside the air inlet 174. The exhaust piston 172 is slidably disposed inside the cylinder 171. An air injection pipe 163 passes through the side wall of the exhaust piston 172. An air outlet check valve 176 is installed inside the air injection pipe 163. The cylinder end plate 173 is fixed to the end of the cylinder 171, and the air injection pipe 163 slides through the side wall of the cylinder end plate 173.

[0046] In actual operation, this embodiment uses the vibration of the right end plate 141 to drive the air injection pipe 163 to move back and forth, thereby driving the exhaust piston 172 to slide back and forth inside the cylinder 171. When the exhaust piston 172 retracts, a negative pressure is formed inside the cylinder 171, and the external air pushes open the intake one-way valve 175 to enter the cylinder 171. When the exhaust piston 172 pushes forward, the intake one-way valve 175 closes, and the gas pushes open the exhaust one-way valve 176 and is output along the air injection pipe 163. The vibration of the grab bucket itself is used as the power source, and the cavity can be ventilated and cooled without the need for an additional fan.

[0047] like Figure 7 As shown, in this embodiment, a shielding sleeve 18 is provided on the outer side of the outer protective sleeve 161. The shielding sleeve 18 is fixedly connected to the side wall of the outer protective sleeve 161, and the heat dissipation hole 164 is provided on the inner side of the shielding sleeve 18.

[0048] In actual operation, this embodiment uses a shielding sleeve 18 arranged outside the heat dissipation hole 164 to block sand and dust from entering the outer protective sleeve 161 from the heat dissipation hole 164 while maintaining the ventilation channel, thereby reducing the entry of impurities into the working cavity of the gear and generator. The gap reserved between the two can also ensure the normal flow of heat dissipation airflow as much as possible.

[0049] like Figure 9 As shown, further, in this embodiment, the power supply terminal of the generator assembly 12 is electrically connected to a voltage regulator 19, a reverse charging protection diode 20, and a power detection module 21. The generator assembly 12 is electrically connected to the battery assembly 8 through the voltage regulator 19, the reverse charging protection diode 20, and the power detection module 21. The generator assembly 12 is a permanent magnet DC generator. The power detection module 21 has a preset low power on threshold of 22.2V and a full power off threshold of 27.2V.

[0050] In actual operation, this embodiment uses voltage regulator 19 to adjust the fluctuating voltage output by generator assembly 12 to match the charging voltage of battery assembly 8. Relying on the unidirectional conduction characteristic of anti-reverse charging diode 20, it avoids reverse current from battery assembly 8 flowing back to generator assembly 12 as much as possible, reducing power consumption and the risk of device damage. Power detection module 21 collects the voltage of battery assembly 8 in real time. When the voltage is lower than the low charge threshold, the charging circuit is turned on. After reaching the full charge threshold, the charging circuit is turned off, which helps to prevent overcharging of battery assembly 8 and provides a certain degree of protection for the battery.

[0051] The operation process of this invention is as follows: When the equipment performs bulk material grabbing operation, the hydraulic drive component 7 drives the bucket assembly 1 to complete the opening action. The hydraulic drive component 7 extends and pushes the lower support beam assembly 2 to move downward. The middle support beam assembly 3 temporarily remains in a relatively static state. During the downward movement of the lower support beam assembly 2, the lifting wire rope 6 will be released. During the release of the lifting wire rope 6, the rope body will undergo continuous displacement. The rope body friction drives the guide pulley 10 to rotate in the forward direction. The guide pulley 10 drives the rotating shaft 13 to rotate synchronously. The torque output by the rotating shaft 13 is transmitted to the speed increaser 114 through the telescopic component 15, the transmission shaft 111, the gear ring 112, and the cylindrical gear 113 in sequence. After the speed increaser 114 increases the speed, it drives the generator assembly 12 to operate and generate electricity.

[0052] When the bucket assembly 1 needs to close and grab materials, the movable end of the hydraulic drive assembly 7 retracts, driving the middle support beam assembly 3 to move downward. At this time, the hoisting wire rope 6 is gradually retracted. During this process, the guide pulley 10 starts to reverse. After the middle support beam assembly 3 moves to the lower position, the crane pulls the hoisting wire rope 6 upward, causing the middle support beam assembly 3, hydraulic drive assembly 7, lower support beam assembly 2, and guide pulley 10 to rise upward, driving the two grabs of the bucket assembly 1 to close and retract, realizing the grabbing operation of bulk materials. During this stage, the retraction movement of the hoisting wire rope 6 will drive the guide pulley 10 to rotate in the opposite direction. The rotating shaft 13 also outputs torque, which is then driven by the transmission assembly 11 to drive the generator assembly 12 to continuously generate electricity.

[0053] The generator assembly 12 generates electrical energy during both forward and reverse rotation of the guide pulley 10. The output electrical energy is first delivered to the voltage regulator 19, which adjusts the voltage, which fluctuates with the rotational speed, to match the charging voltage of the battery assembly 8. Then, the current passes through the anti-reverse charging diode 20 and is sent to the power detection module 21. The power detection module 21 continuously collects the voltage signal of the battery assembly 8. When the voltage of the battery assembly 8 is lower than the preset low charge threshold, the internal switch opens the charging circuit to replenish the battery assembly 8 with electrical energy. When the voltage of the battery assembly 8 rises to the full charge cut-off threshold, the power detection module 21 disconnects the charging circuit and stops the charging operation to avoid overcharging of the battery assembly 8 as much as possible. The anti-reverse charging diode 20 always acts as a one-way barrier to prevent the current from the battery assembly 8 from flowing back into the generator assembly 12 as much as possible.

[0054] In the entire operation cycle of opening, closing, and lifting of the grab bucket, the impact of loading and unloading and the fluctuation of the wire rope force will continuously transmit vibration to the pulley frame 9. The vibration is transmitted to the buffer and shock absorption unit 14. Multiple sets of damping shock absorbers 144 absorb and dissipate part of the impact energy, reduce the transmission of vibration to precision transmission and power generation components such as speed increaser 114 and generator assembly 12, and slow down the wear of gear meshing pairs and internal parts of the generator.

[0055] At the same time, the vibration generated by the operation causes the right end plate 141 inside the buffer and shock absorption unit 14 to swing back and forth slightly. The right end plate 141 drives the air injection pipe 163 to push and pull back and forth, causing the exhaust piston 172 inside the hydraulic exhaust assembly 17 to slide back and forth inside the cylinder 171. The exhaust piston 172 moves backward, and a negative pressure is formed inside the cylinder 171. External air pushes open the intake one-way valve 175 and enters the cylinder 171. The exhaust piston 172 pushes forward, the intake one-way valve 175 closes, and the gas pushes open the exhaust one-way valve 176. The high-pressure airflow is sent into the inner cavity of the annular plate 143 through the air injection pipe 163 and the air injection hole 165. The cooling airflow flows inside the cavity of the annular plate 143, carrying away the heat generated by the speed increaser 114 and the generator assembly 12. The hot airflow finally passes through the heat dissipation hole 164 on the outer protective sleeve 161 and is discharged outward.

[0056] The telescopic shaft 152 of the telescopic assembly 15 can make a small amount of sliding compensation according to the axial displacement caused by the operation vibration, maintain the normal meshing state of the gear ring 112 and the cylindrical gear 113, and minimize the probability of transmission jamming. In addition, the rotational resistance of the generator assembly 12 when generating electricity will form a certain rotational damping on the guide pulley 10, which can suppress the sudden change in the rotational speed of the guide pulley 10 to a certain extent, alleviate the instantaneous impact of the mechanism, and improve the smoothness of the operation of the bucket assembly 1 during the opening and closing process.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A self-charging wireless remote-controlled hydraulic grab bucket, comprising two symmetrically arranged bucket body components (1), a lower support beam assembly (2), a middle support beam assembly (3), an upper support beam assembly (4), a balance frame assembly (5), two lifting wire ropes (6), a hydraulic drive assembly (7), and a battery assembly (8), characterized in that, It also includes a pulley frame (9), a guide pulley (10), a transmission assembly (11), and a generator assembly (12). The pulley frame (9) is fixed to the upper surface of the lower support beam assembly (2); The guide pulley (10) is located inside the pulley frame (9). The guide pulley (10) is equipped with a rotating shaft (13), and the rotating shaft (13) is rotatably connected to the side wall of the pulley frame (9). The movable end of the lifting wire rope (6) passes around the lower wheel wall of the corresponding guide pulley (10) and is connected to the middle support beam assembly (3). The transmission assembly (11) is located at one end of the rotating shaft (13); The generator assembly (12) is located on one side of the pulley frame (9), and the rotating shaft (13) is connected to the input end of the generator assembly (12) through the transmission assembly (11). The pulley frame (9) is equipped with a buffer and shock absorption unit (14), and the generator assembly (12) is installed inside the buffer and shock absorption unit (14). The generator assembly (12) charges the battery assembly (8).

2. The self-charging wireless remote-controlled hydraulic grab bucket according to claim 1, characterized in that, The transmission assembly (11) includes a transmission shaft (111), a gear ring (112), a cylindrical gear (113), a speed increaser (114), and a telescopic assembly (15). The transmission shaft (111) is connected to the rotating shaft (13) via the telescopic assembly (15). The gear ring (112) is fixedly sleeved on the outside of the transmission shaft (111). The cylindrical gear (113) meshes with the gear ring (112). The speed increaser (114) is located inside the buffer and shock absorption unit (14). The input end of the speed increaser (114) is connected to the axle of the cylindrical gear (113), and the output end of the speed increaser (114) is connected to the input end of the generator assembly (12).

3. The self-charging wireless remote-controlled hydraulic grab bucket according to claim 2, characterized in that, The telescopic assembly (15) includes a shaft end plate (151), a telescopic shaft (152), and a plurality of telescopic protrusions (153); the shaft end plate (151) is fixed to the end of the transmission shaft (111), the telescopic shaft (152) is fixed to the side wall of the shaft end plate (151), and the plurality of telescopic protrusions (153) are evenly distributed in a ring on the shaft wall of the telescopic shaft (152). The end of the rotating shaft (13) is provided with a telescopic groove (154) that matches the telescopic shaft (152), and the groove wall of the telescopic groove (154) is provided with a plurality of sliding grooves (155) that match the telescopic protrusions (153).

4. A self-charging wireless remote-controlled hydraulic grab according to claim 2, characterized in that, The buffer and shock absorption unit (14) includes a right end plate (141), a left end plate (142), an annular plate (143), and a damping shock absorber (144); the right end plate (141) is movably sleeved on the outside of the transmission shaft (111), the annular plate (143) is fixed to the side wall of the right end plate (141), the gear ring (112), the cylindrical gear (113), the speed increaser (114), and the generator assembly (12) are all arranged on the inside of the annular plate (143), and the left end plate (142) is fixed to the side wall of the right end plate (141). The left end plate (142) is fixed to the end of the ring plate (143), and the side wall of the left end plate (142) is fixed with a fixing bracket (145). The generator assembly (12) and the speed increaser (114) are both fixedly connected to the fixing bracket (145). The damping shock absorber (144) is fixed to the side wall of the pulley frame (9), and the movable end of the damping shock absorber (144) is fixedly connected to the side wall of the right end plate (141). The side wall of the pulley frame (9) is equipped with a heat dissipation mechanism (16) connected to the left end plate (142).

5. A self-charging wireless remote-controlled hydraulic grab according to claim 4, characterized in that, The heat dissipation mechanism (16) includes an outer protective sleeve (161), a support frame (162), a hydraulic exhaust assembly (17), and an air injection pipe (163). The outer protective sleeve (161) is slidably sleeved on the outside of the annular plate (143) and fixed to the side wall of the pulley frame (9). The side wall of the outer protective sleeve (161) is provided with multiple heat dissipation holes (164). The support frame (162) is fixed inside the outer protective sleeve (161). The hydraulic exhaust assembly (17) is fixed inside the support frame (162). The air outlet of the hydraulic exhaust assembly (17) is connected to the air injection pipe (163). The side wall of the left end plate (142) is provided with an air injection hole (165) connected to the air injection pipe (163).

6. A self-charging wireless remote-controlled hydraulic grab according to claim 5, characterized in that, The hydraulic exhaust assembly (17) includes a cylinder (171), an exhaust piston (172), and a cylinder end plate (173). The cylinder (171) is fixed inside the support frame (162). An air inlet (174) is provided on the side wall of the cylinder (171), and an air inlet check valve (175) is installed inside the air inlet (174). The exhaust piston (172) is slidably disposed inside the cylinder (171). The air injection pipe (163) passes through the side wall of the exhaust piston (172). An air outlet check valve (176) is installed inside the air injection pipe (163). The cylinder end plate (173) is fixed to the end of the cylinder (171), and the air injection pipe (163) slides through the side wall of the cylinder end plate (173).

7. A self-charging wireless remote-controlled hydraulic grab according to claim 5, characterized in that, The outer protective sleeve (161) is fitted with a shielding sleeve (18) on its outer side. The shielding sleeve (18) is fixedly connected to the side wall of the outer protective sleeve (161). The heat dissipation hole (164) is located on the inner side of the shielding sleeve (18).

8. A self-charging wireless remote-controlled hydraulic grab according to claim 1, characterized in that, The power supply end of the generator assembly (12) is electrically connected to a voltage regulator (19), a reverse charging diode (20), and a power detection module (21). The generator assembly (12) is electrically connected to the battery assembly (8) through the voltage regulator (19), the reverse charging diode (20), and the power detection module (21).

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