Crane energy recovery device

Abstract

The application discloses a crane energy recovery device and particularly relates to the technical field of cranes, which comprises a first base, a second base fixedly installed on one side of the first base, a crane hoisting mechanism fixedly installed at the top end of the first base, a hoisting shaft rod arranged in the crane hoisting mechanism, a rotating mechanism fixedly installed at the top end of the second base, an electric rotating mechanism arranged at the end of the rotating mechanism, and a power storage mechanism vertically installed on the side of the second base away from the first base. The application can effectively convert the force generated when heavy objects are lowered into mechanical energy, effectively convert the mechanical energy into electric energy, store the electric energy and effectively recover the energy. The power storage mechanism can sequentially change the positions of multiple storage batteries, facilitate the sequential storage of the multiple storage batteries and the use of the electric energy in the storage batteries, and thus improve the overall power storage efficiency of the device.

Description

Technical Field

[0001] This invention relates to the field of crane technology, specifically to a crane energy recovery device. Background Technology

[0002] When lifting heavy objects, the energy generated by the prime mover is used to lift the object. For some cranes, such as port loading and unloading cranes, there are frequent situations where heavy objects are lowered. When the crane lowers the heavy object, the gravitational potential energy is converted into mechanical energy and then into heat energy by the working mechanism.

[0003] In existing technologies, crane energy recovery still faces some problems. For example, when converting energy into mechanical energy and thermal energy, the mechanical energy and thermal energy cannot be effectively recovered and reused, which easily leads to the loss of mechanical energy and thermal energy. The energy cannot be directly absorbed, resulting in low efficiency. Secondly, the recovered and converted electrical energy is stored in batteries, but the storage capacity of batteries is limited. When the storage capacity of batteries is depleted, they need to be replaced manually, which is inconvenient. Therefore, we propose a crane energy recovery device to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a crane energy recovery device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a crane energy recovery device, comprising a first base, a second base fixedly installed on one side of the first base, a crane lifting mechanism fixedly installed on the top of the first base, the crane lifting mechanism having a lifting shaft, a mechanical rotating mechanism fixedly installed on the top of the second base, an electric rotating mechanism being provided at the end of the mechanical rotating mechanism, and an energy storage mechanism vertically installed on the side of the second base away from the first base.

[0006] Preferably, the rotating mechanism includes two symmetrically distributed rotating side frames. The rotating side frames are fixedly installed on the top of the second base. A rotating shaft is rotatably mounted on the side of the rotating side frame near the lifting shaft via bearings. Both ends of the rotating shaft extend outward from the corresponding rotating side frame and are fixedly mounted with a large speed regulating gear. One end of the rotating shaft and the end of the lifting shaft are coaxially fixedly installed. A rotating auxiliary shaft is rotatably mounted on the side of the rotating side frame near the rotating shaft via bearings. The opposite ends of the two rotating auxiliary shafts extend outward from the corresponding rotating side frame and are fixedly mounted with a small speed regulating gear. The large speed regulating gear and the corresponding small speed regulating gear are meshed together.

[0007] Preferably, the rotating mechanism further includes a piston outer cylinder, which is fixedly installed on the top end of the second base away from the first base. A cover is fixedly installed at one end of the piston outer cylinder by bolts. A piston shaft is movably inserted into the middle of the cover. One end of the piston shaft extends into the piston outer cylinder and is fixedly installed with a piston head, which is movably engaged in the piston outer cylinder.

[0008] Preferably, the piston rod extends outward from the outer side of the piston outer cylinder on the side away from the piston head and is rotatably mounted with a connecting bracket.

[0009] Preferably, cams are fixedly installed at the opposite ends of the two auxiliary shafts of the machine, and the protruding parts of the cams are rotatably installed on the side of the connecting frame away from the piston rod.

[0010] Preferably, the electric rotating mechanism includes an impeller outer cylinder, an air inlet pipe integrally formed on the outer side of the impeller outer cylinder, and an exhaust pipe integrally formed on the side of the impeller outer cylinder away from the air inlet pipe. The air inlet pipe and the exhaust pipe are horizontally staggered. A support frame is fixedly fitted on the outer side of both the air inlet pipe and the exhaust pipe. The support frame is fixedly installed on the top of the second base. An impeller shaft is rotatably mounted in the middle of the impeller outer cylinder via a bearing. A fluid impeller is fixedly fitted on the outer side of the impeller shaft. The bottom of the impeller shaft extends out of the bottom end of the impeller outer cylinder. A power generation mechanism is provided below the impeller outer cylinder. A drive shaft is provided in the power generation mechanism. The bottom end of the impeller shaft and the top end of the drive shaft in the power generation mechanism are coaxially fixedly installed. A filter element is fixedly clamped at the end of the exhaust pipe away from the impeller outer cylinder.

[0011] Preferably, the piston outer cylinder has an installation groove on the side away from the cover, and the air inlet pipe is fixedly engaged in the installation groove on the side away from the impeller outer cylinder.

[0012] Preferably, the energy storage mechanism includes a third base, which is vertically installed on the side of the second base away from the first base. A rotating cylinder is integrally formed on the side of the third base away from the second base. A storage frame is rotatably mounted in the middle of the rotating cylinder. A rotating shaft is fixedly mounted at the bottom center of the storage frame and rotatably mounted in the rotating cylinder. Multiple storage batteries arranged in a circular array are movably mounted in the storage frame. A sealing frame is provided at the top of the rotating cylinder. An inlet frame and an outlet frame are fixedly mounted on the sealing frame. The positions of the inlet frame and outlet frame are vertically aligned with the positions of the corresponding storage batteries. The inlet frame has an inlet pin, and an inlet wire is fixedly mounted on the inlet pin. The outlet frame has an outlet pin, and an outlet wire is fixedly mounted on the outlet pin. The inlet pin and outlet pin are in contact with the charging pin and power supply pin of the corresponding storage battery, respectively. The end of the inlet wire is electrically connected to the power supply port of the power generation mechanism.

[0013] Preferably, the bottom end of the sealing frame is fixedly installed with a plurality of guide shafts arranged in a ring array. The guide shafts are slidably engaged in the indexing cylinder. The bottom of the indexing cylinder has a working cavity. The bottom of the rotating shaft and the bottom of the plurality of guide shafts extend into the working cavity. A drive frame is rotatably engaged in the working cavity. The bottom end of the rotating shaft is fixedly installed in the middle of the drive frame. The top end of the drive frame is fixedly installed with a convex frame that cooperates with the guide shaft. A groove is formed between two adjacent convex frames. The guide shaft is movably engaged in the corresponding groove.

[0014] Preferably, a driven gear ring is fixedly sleeved on the outer side of the drive frame, a drive motor is fixedly installed on the top of the third base, and a drive gear is fixedly installed on the drive end of the drive motor, the drive gear and the driven gear ring being meshed and connected.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. By setting up a mechanical rotating mechanism in conjunction with an electric rotating mechanism and an energy storage mechanism, the force generated when the heavy object is lowered can be effectively converted into mechanical energy, and the mechanical energy can be effectively converted into electrical energy. The electrical energy can then be stored for effective energy recovery.

[0017] 2. By setting up an energy storage mechanism, the positions of multiple energy storage batteries can be changed sequentially, facilitating sequential energy storage of multiple energy storage batteries and the use of the energy in the energy storage batteries, thereby improving the overall energy storage efficiency of the device. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the rotating mechanism in this invention;

[0021] Figure 3 This is a schematic diagram of the partial structural connections of the rotating mechanism in this invention;

[0022] Figure 4 This is a schematic diagram of the structural connection of the electro-rotating mechanism in this invention;

[0023] Figure 5 This is a schematic diagram of the structural connection of the energy storage mechanism in this invention;

[0024] Figure 6 For the present invention Figure 5 Enlarged view of point A in the middle;

[0025] Figure 7 For the present invention Figure 5 Enlarged view of point B in the middle;

[0026] Figure 8 This is a schematic diagram of the partial structural connections of the energy storage mechanism in this invention.

[0027] In the diagram: 1. First base; 2. Second base; 3. Crane hoisting mechanism; 4. Hoisting shaft; 5. Mechanical rotating mechanism; 6. Electric rotating mechanism; 7. Energy storage mechanism; 51. Mechanical rotating side frame; 52. Mechanical rotating shaft; 53. Speed ​​regulating gear; 54. Mechanical rotating auxiliary shaft; 55. Speed ​​regulating pinion; 56. Cam; 57. Connecting frame; 58. Piston outer cylinder; 581. Cover; 582. Piston shaft; 583. Piston head; 59. Mounting slot; 61. Impeller outer cylinder; 62. Inlet pipe; 63. Exhaust pipe; 64. Support frame 65. Impeller shaft; 66. Fluid impeller; 67. Power generation mechanism; 68. Filter element; 71. Third base; 72. Rotating cylinder; 73. Storage frame; 731. Rotating shaft; 74. Storage battery; 75. Shelf; 76. Power inlet frame; 761. Power inlet pin; 762. Power inlet cable body; 77. Power outlet frame; 771. Power outlet pin; 772. Power outlet cable body; 78. Guide shaft; 79. Drive frame; 791. Protruding frame; 792. Groove; 710. Driven gear ring; 711. Drive motor; 712. Drive gear. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example: Figure 1-8As shown, the present invention provides a crane energy recovery device, including a first base 1, a second base 2 fixedly installed on one side of the first base 1, a crane lifting mechanism 3 fixedly installed on the top of the first base 1, wherein the crane lifting mechanism 3 is provided with a lifting shaft 4, and a crane rope is wound on the crane lifting mechanism 3. By controlling and opening the crane lifting mechanism 3, the crane rope is driven to wind up and lift the heavy object. When the heavy object is lowered, it will control the lifting shaft 4 on the crane lifting mechanism 3 to rotate in the opposite direction. A mechanical rotating mechanism 5 is fixedly installed on the top of the second base 2, and an electric rotating mechanism 6 is provided at the end of the mechanical rotating mechanism 5. An energy storage mechanism 7 is vertically installed on the side of the second base 2 away from the first base 1.

[0030] The rotating mechanism 5 includes two symmetrically distributed rotating side frames 51. The rotating side frames 51 are fixedly installed on the top of the second base 2. A rotating shaft 52 is rotatably mounted on the side of the rotating side frame 51 near the lifting shaft 4 via a bearing. One end of the rotating shaft 52 is coaxially fixedly installed with the end of the lifting shaft 4. When the lifting shaft 4 rotates, it drives the rotating shaft 52 to rotate stably on one side of the rotating side frame 51. Both ends of the rotating shaft 52 extend outward from the corresponding rotating side frame 51 and are fixedly equipped with speed regulating gears. When the rotating shaft 52 rotates stably, the wheel 53 synchronously drives the two end speed-regulating large gears 53 to rotate stably. The rotating side frame 51 near the rotating shaft 52 is equipped with a rotating auxiliary shaft 54 ​​through bearings. The opposite ends of the two rotating auxiliary shafts 54 extend out of the outer side of the corresponding rotating side frame 51 and are fixedly installed with speed-regulating small gears 55. The speed-regulating large gears 53 and the corresponding speed-regulating small gears 55 are meshed and connected. The two end speed-regulating large gears 53 rotate stably, driving the speed-regulating small gears 55 and the rotating auxiliary shafts 54 to rotate at high speed and stably.

[0031] The rotating mechanism 5 also includes a piston outer cylinder 58, which is fixedly installed on the top of the second base 2 away from the first base 1. A cover 581 is fixedly installed at one end of the piston outer cylinder 58 by bolts to facilitate the removal of the cover 581. A through groove is provided on the cover 581. A piston shaft 582 is movably inserted into the middle of the cover 581. The piston shaft 582 can slide back and forth in the middle of the cover 581. One end of the piston shaft 582 extends into the piston outer cylinder 58 and is fixedly installed with a piston head 583. The piston head 583 is movably engaged in the piston outer cylinder 58. When the piston shaft 582 slides back and forth in the middle of the cover 581, it drives the piston head 583 to slide back and forth in the piston outer cylinder 58, converting the force generated when the heavy object is lowered into mechanical energy for energy recovery.

[0032] The piston rod 582 extends outward from the piston outer cylinder 58 on the side away from the piston head 583 and is rotatably mounted with a connecting frame 57; cams 56 are fixedly mounted on the opposite ends of the two auxiliary rotating shafts 54, and the protruding parts of the cams 56 are rotatably mounted with the connecting frame 57 on the side away from the piston rod 582. When the auxiliary rotating shafts 54 rotate at high speed and stably, they drive the cams 56 to rotate at high speed and stably. With the rotational connection of the connecting frame 57, the piston outer cylinder 58 is driven to slide back and forth at high speed in the middle of the cover 581.

[0033] The electric rotating mechanism 6 includes an impeller outer cylinder 61. An air inlet pipe 62 is integrally formed on the outer side of the impeller outer cylinder 61. An exhaust pipe 63 is integrally formed on the side of the impeller outer cylinder 61 away from the air inlet pipe 62. The air inlet pipe 62 and the exhaust pipe 63 are horizontally staggered. A filter element 68 is fixedly fastened to one end of the exhaust pipe 63 away from the impeller outer cylinder 61. A mounting groove 59 is formed on the side of the piston outer cylinder 58 away from the cover 581. The side of the air inlet pipe 62 away from the impeller outer cylinder 61 is fixedly fastened into the mounting groove 59, connecting the electric rotating mechanism 6 and the mechanical rotating mechanism 5. When the piston outer cylinder 58 is driven... When the middle part of the cover 581 slides back and forth at high speed, the piston head 583 is driven to slide back and forth at high speed in the piston outer cylinder 58. The air pressure in the piston outer cylinder 58 increases and decreases repeatedly. When the air pressure in the piston outer cylinder 58 increases, the airflow in the piston outer cylinder 58 is blown into the impeller outer cylinder 61 through the air inlet pipe 62 and discharged through the exhaust pipe 63 and the filter element 68. When the air pressure in the piston outer cylinder 58 decreases, the external airflow is filtered through the filter element 68 and then drawn into the impeller outer cylinder 61 through the exhaust pipe 63 and into the piston outer cylinder 58 through the air inlet pipe 62, thus realizing the reciprocating high-speed entry and exit of the airflow in the impeller outer cylinder 61.

[0034] Support frames 64 are fixedly fitted on the outer sides of both the intake pipe 62 and the exhaust pipe 63. The support frames 64 are fixedly installed on the top of the second base 2. The support frames 64 increase the stability of the intake pipe 62 and the exhaust pipe 63. An impeller shaft 65 is rotatably mounted on the middle of the impeller outer cylinder 61 via a bearing. The impeller shaft 65 can rotate at high speed in the middle of the impeller outer cylinder 61. A fluid impeller 66 is fixedly fitted on the outer side of the impeller shaft 65. The fluid impeller 66 is located in the impeller outer cylinder 61. When the reciprocating high-speed airflow in the impeller outer cylinder 61... During high-speed entry and exit, the driving fluid impeller 66 and impeller shaft 65 rotate at high speed. The bottom of the impeller shaft 65 extends out to the bottom end of the impeller outer cylinder 61. A power generation mechanism 67 is provided below the impeller outer cylinder 61. A drive shaft is provided in the power generation mechanism 67. The bottom end of the impeller shaft 65 and the top end of the drive shaft in the power generation mechanism 67 are coaxially fixed. The high-speed rotation of the impeller shaft 65 drives the drive shaft in the power generation mechanism 67 to rotate at high speed, thereby generating stable electricity through the power generation mechanism 67, converting mechanical energy into electrical energy, and recovering energy.

[0035] The energy storage mechanism 7 includes a third base 71, which is vertically installed on the side of the second base 2 away from the first base 1. A rotating cylinder 72 is integrally formed on the side of the third base 71 away from the second base 2. A storage frame 73 is rotatably mounted in the middle of the rotating cylinder 72. The storage frame 73 can rotate in the middle of the rotating cylinder 72. A rotating shaft 731 is fixedly installed in the middle of the bottom end of the storage frame 73. The rotating shaft 731 is rotatably mounted in the rotating cylinder 72. Multiple storage batteries 74 arranged in a ring array are movably mounted in the storage frame 73. When the storage frame 73 is driven to rotate intermittently in the middle of the rotating cylinder 72, the multiple storage batteries 74 are driven to rotate intermittently, thereby changing the position of the multiple storage batteries 74 in sequence, which facilitates the sequential storage of energy by the multiple storage batteries 74 and improves the overall energy storage efficiency of the device.

[0036] The top of the indexing cylinder 72 is provided with a sealing frame 75. A power inlet frame 76 and a power outlet frame 77 are fixedly mounted on the sealing frame 75. The positions of the power inlet frame 76 and the power outlet frame 77 are vertically corresponding to the positions of the corresponding storage batteries 74. The power inlet frame 76 is provided with a power inlet pin 761. A power inlet wire body 762 is fixedly installed on the power inlet pin 761. The end of the power inlet wire body 762 is electrically connected to the power transmission port of the power generation mechanism 67. The current generated by the power generation mechanism 67 enters the power inlet pin 761 through the power inlet wire body 762.

[0037] The power outlet frame 77 is provided with a power outlet pin 771, and a power outlet line 772 is fixedly installed on the power outlet pin 771. The power inlet pin 761 and the power outlet pin 771 are in contact with the charging pin and the power transmission pin on the corresponding storage battery 74, respectively. The generated current entering the power inlet pin 761 enters the corresponding storage battery 74 through the charging pin on the corresponding storage battery 74 for power storage. The current in the fully charged storage battery 74 can be used through the power transmission pin, the power outlet pin 771, and the power outlet line 772, thereby recovering electrical energy. In specific use, the end of the power outlet line 772 is electrically connected to the electrical appliance, and the recovered electrical energy can be used for the appliance.

[0038] The bottom end of the sealing frame 75 is fixedly equipped with a plurality of guide shafts 78 arranged in a circular array. The guide shafts 78 are slidably engaged in the indexing cylinder 72, and the guide shafts 78 can slide vertically up and down in the indexing cylinder 72. The bottom of the indexing cylinder 72 has a working cavity. The bottom of the rotating shaft 731 and the bottom of the plurality of guide shafts 78 extend into the working cavity. A drive frame 79 is rotatably engaged in the working cavity. The bottom end of the rotating shaft 731 is fixedly installed in the middle of the drive frame 79, and a drive frame 79 is fixedly sleeved on the outer side of the drive frame 79. There is a driven gear ring 710. A drive motor 711 is fixedly installed on the top of the third base 71. A drive gear 712 is fixedly installed on the drive end of the drive motor 711. The drive gear 712 and the driven gear ring 710 are meshed and connected. In use, the drive motor 711 is controlled and turned on to drive the drive gear 712 to drive the driven gear ring 710 to rotate intermittently, thereby driving the drive frame 79 to rotate intermittently in the working cavity, thereby driving the rotating shaft 731 and the storage frame 73 to rotate intermittently in the middle of the indexing cylinder 72.

[0039] The top of the drive frame 79 is fixedly mounted with a convex frame 791 that cooperates with the guide shaft 78. A groove 792 is formed between two adjacent convex frames 791. The guide shaft 78 is movably engaged in the corresponding groove 792. When the drive frame 79 rotates intermittently, it drives the convex frames 791 and the groove 792 to rotate intermittently. The guide shaft 78 slides out of the groove 792 and rises to be placed on the convex frame 791, driving the sealing frame 75 to rise. The power inlet pin 761 and the power outlet pin 771 are respectively connected to the charging pins of the corresponding storage batteries 74. The disconnection of the pins and power supply pins does not affect the position changes of multiple storage batteries 74. When the next storage battery 74 rotates to the position below the power inlet frame 76, the guide shaft 78 is again moved and engaged in the corresponding groove 792. The guide shaft 78 moves down, causing the sealing frame 75 to move down. The power inlet pin 761 and the power outlet pin 771 contact the charging pin and power supply pin on the corresponding storage battery 74, respectively, without affecting the power storage of the next storage battery 74. This facilitates the sequential power storage of multiple storage batteries 74 and improves the overall power storage efficiency of the device.

[0040] Working principle: When in use, control and start the crane lifting mechanism 3 to drive the crane rope to wind up and lift the heavy object. When the heavy object is lowered, it will reverse the control to drive the lifting shaft 4 on the crane lifting mechanism 3 to rotate, drive the machine rotating shaft 52 to rotate stably on one side of the machine rotating side frame 51, synchronously drive the two end speed regulating large gears 53 to rotate stably, drive the speed regulating small gear 55 and the machine rotating auxiliary shaft 54 ​​to rotate at high speed and stably, drive the cam 56 to rotate at high speed and stably, and cooperate with the rotation connection of the connecting frame 57 to drive the piston outer cylinder 58 to slide back and forth at high speed in the middle of the cover 581, and drive the piston head 583 to slide back and forth at high speed in the piston outer cylinder 58, converting the force generated when the heavy object is lowered into mechanical energy for energy recovery.

[0041] The air pressure in the piston outer cylinder 58 increases and decreases repeatedly. When the air pressure in the piston outer cylinder 58 increases, the airflow in the piston outer cylinder 58 is blown into the impeller outer cylinder 61 through the air inlet pipe 62 and discharged through the exhaust pipe 63 and the filter element 68. When the air pressure in the piston outer cylinder 58 decreases, the external airflow is filtered through the filter element 68 and then drawn into the impeller outer cylinder 61 through the exhaust pipe 63 and into the piston outer cylinder 58 through the air inlet pipe 62. This achieves high-speed reciprocating airflow in and out of the impeller outer cylinder 61, driving the fluid impeller 66 and impeller shaft 65 to rotate at high speed, which in turn drives the drive shaft in the power generation mechanism 67 to rotate at high speed. This allows for stable power generation through the power generation mechanism 67, converting mechanical energy into electrical energy and recovering energy.

[0042] The current generated by the power generation mechanism 67 enters the power input pin 761 through the power input line body 762. The current generated in the power input pin 761 enters the corresponding storage battery 74 through the charging pin on the corresponding storage battery 74 for energy storage. The current in the fully charged storage battery 74 can be used through the power transmission pin, the power discharge pin 771, and the power discharge line body 772 to recover electrical energy.

[0043] When the storage battery 74 is fully charged and the next storage battery 74 is needed to continue charging, the drive motor 711 is controlled and turned on to drive the drive gear 712 to drive the driven gear ring 710 to rotate intermittently, thereby driving the drive frame 79 to rotate intermittently in the working chamber, thereby driving the rotating shaft 731 and the storage frame 73 to rotate intermittently in the middle of the indexing cylinder 72, thereby changing the position of multiple storage batteries 74 in sequence.

[0044] While the drive frame 79 rotates intermittently, it also drives the convex frame 791 and the groove 792 to rotate intermittently. The guide shaft 78 slides out of the groove 792 and rises to be placed on the convex frame 791, which drives the sealing frame 75 to rise. The power input pin 761 and the power output pin 771 disengage from the charging pin and power output pin on the corresponding storage battery 74, respectively, without affecting the position change of multiple storage batteries 74. When the next storage battery 74 rotates to the position below the power input frame 76, the guide shaft 78 moves and engages in the corresponding groove 792 again. The guide shaft 78 moves down and drives the sealing frame 75 to move down. The power input pin 761 and the power output pin 771 contact the charging pin and power output pin on the corresponding storage battery 74, respectively, without affecting the power storage of the next storage battery 74. This facilitates the sequential power storage of multiple storage batteries 74 and improves the overall power storage efficiency of the device.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A crane energy recovery device, comprising a first base (1), characterized in that: A second base (2) is fixedly installed on one side of the first base (1). A crane lifting mechanism (3) is fixedly installed on the top of the first base (1). A lifting shaft (4) is provided in the crane lifting mechanism (3). A mechanical rotating mechanism (5) is fixedly installed on the top of the second base (2). An electric rotating mechanism (6) is provided at the end of the mechanical rotating mechanism (5). An energy storage mechanism (7) is vertically installed on the side of the second base (2) away from the first base (1). The rotating mechanism (5) includes two symmetrically distributed rotating side frames (51). The rotating side frames (51) are fixedly installed on the top of the second base (2). The rotating side frames (51) near the lifting shaft (4) are rotatably mounted with a rotating shaft (52) via bearings. The two ends of the rotating shaft (52) extend out of the outer side of the corresponding rotating side frame (51) and are fixedly mounted with a speed regulating gear (53). One end of the rotating shaft (52) and the end of the lifting shaft (4) are coaxially fixedly installed. The rotating side frames (51) near the rotating shaft (52) are rotatably mounted with a rotating auxiliary shaft (54) via bearings. The opposite ends of the two rotating auxiliary shafts (54) extend out of the outer side of the corresponding rotating side frame (51) and are fixedly mounted with a speed regulating pinion (55). The speed regulating gear (53) and the corresponding speed regulating pinion (55) are meshed and connected. The rotating mechanism (5) also includes a piston outer cylinder (58), which is fixedly installed on the top of the second base (2) away from the first base (1). A cover (581) is fixedly installed at one end of the piston outer cylinder (58) by bolts. A piston shaft (582) is movably inserted in the middle of the cover (581). One end of the piston shaft (582) extends into the piston outer cylinder (58) and is fixedly installed with a piston head (583). The piston head (583) is movably engaged in the piston outer cylinder (58). The electric rotating mechanism (6) includes an impeller outer cylinder (61). An air inlet pipe (62) is integrally formed on the outer side of the impeller outer cylinder (61), and an exhaust pipe (63) is integrally formed on the side of the impeller outer cylinder (61) away from the air inlet pipe (62). The air inlet pipe (62) and the exhaust pipe (63) are horizontally staggered. A support frame (64) is fixedly fitted on the outer side of both the air inlet pipe (62) and the exhaust pipe (63). The support frame (64) is fixedly installed on the top of the second base (2). The middle part of the impeller outer cylinder (61) is connected by... An impeller shaft (65) is rotatably mounted on a bearing. A fluid impeller (66) is fixedly sleeved on the outside of the impeller shaft (65). The bottom of the impeller shaft (65) extends out to the bottom end of the impeller outer cylinder (61). A power generation mechanism (67) is provided below the impeller outer cylinder (61). A drive shaft is provided in the power generation mechanism (67). The bottom end of the impeller shaft (65) and the top end of the drive shaft in the power generation mechanism (67) are coaxially fixedly mounted. A filter element (68) is fixedly clamped at one end of the exhaust pipe (63) away from the impeller outer cylinder (61). The energy storage mechanism (7) includes a third base (71), which is vertically installed on the side of the second base (2) away from the first base (1). A rotating cylinder (72) is integrally formed on the side of the third base (71) away from the second base (2). A storage frame (73) is rotatably mounted in the middle of the rotating cylinder (72). A rotating shaft (731) is fixedly mounted at the bottom center of the storage frame (73). The rotating shaft (731) is rotatably mounted in the rotating cylinder (72). Multiple storage batteries (74) arranged in a circular array are movably mounted in the storage frame (73). A sealing frame (75) is provided at the top of the rotating cylinder (72). An inlet rack (76) and an outlet rack (77) are fixedly mounted on the sealing frame (75). The positions of the inlet rack (76) and the outlet rack (77) are... The positions of the battery (74) and the power supply frame (76) are vertically aligned. The power supply frame (76) is provided with a power supply pin (761), and a power supply line body (762) is fixedly installed on the power supply pin (761). The power discharge frame (77) is provided with a power discharge pin (771), and a power discharge line body (772) is fixedly installed on the power discharge pin (771). The power supply pin (761) and the power discharge pin (771) are in contact with the charging pin and the power transmission pin on the corresponding battery (74), respectively. The end of the power supply line body (762) is electrically connected to the power transmission port of the power generation mechanism (67). The piston outer cylinder (58) has an installation groove (59) on the side away from the cover (581). The air intake pipe (62) is fixedly snapped into the installation groove (59) on the side away from the impeller outer cylinder (61).

2. The crane energy recovery device according to claim 1, characterized in that: The piston rod (582) extends out of the outer side of the piston outer cylinder (58) on the side away from the piston head (583) and is rotatably mounted with a connecting bracket (57).

3. The crane energy recovery device according to claim 2, characterized in that: Cams (56) are fixedly installed on the opposite ends of the two auxiliary shafts (54). The protruding parts of the cams (56) are rotatably installed on the side of the connecting frame (57) away from the piston rod (582).

4. The crane energy recovery device according to claim 1, characterized in that: The bottom end of the sealing frame (75) is fixedly installed with a plurality of guide shafts (78) arranged in a ring array. The guide shafts (78) are slidably engaged in the indexing cylinder (72). The bottom of the indexing cylinder (72) is provided with a working cavity. The bottom of the rotating shaft (731) and the bottom of the plurality of guide shafts (78) extend into the working cavity. A drive frame (79) is rotatably engaged in the working cavity. The bottom end of the rotating shaft (731) is fixedly installed in the middle of the drive frame (79). The top end of the drive frame (79) is fixedly installed with a convex frame (791) that cooperates with the guide shaft (78). A groove (792) is formed between two adjacent convex frames (791). The guide shaft (78) is movably engaged in the corresponding groove (792).

5. The crane energy recovery device according to claim 4, characterized in that: A driven gear ring (710) is fixedly sleeved on the outer side of the drive frame (79), and a drive motor (711) is fixedly installed on the top of the third base (71). A drive gear (712) is fixedly installed on the drive end of the drive motor (711), and the drive gear (712) and the driven gear ring (710) are meshed together.

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