Energy-saving bridge crane and using method thereof

Abstract

The invention belongs to the technical field of cranes, and discloses an energy-saving bridge crane and a using method thereof.The energy-saving bridge crane comprises two longitudinal bridge guide rails, a transverse bridge guide rail is movably installed at the position between the top ends of the two longitudinal bridge guide rails, and a lifting frame is movably installed at the bottom end of the transverse bridge guide rail; hoisting cables are installed at the positions, close to the four corners, of the bottom end of the hoisting frame, the hoisting cables are connected with an external cable crane, and a telescopic rod is fixedly installed in the middle of the bottom end of the hoisting frame. Through rotation of the lead screw and the cooperation effect between the movable base and the adjusting assemblies and between the movable base and the stabilizing assemblies, after the device completes hoisting of goods, the multiple stabilizing assemblies can be automatically close to one another by operating the lead screw, so that after the goods are hoisted again, the side edges of the goods can make contact with the multiple stabilizing assemblies, and the stability of the goods is improved. And through the limiting effect of the stabilizing assembly, shaking of goods during hoisting is reduced, potential safety hazards are reduced, and safety accidents are avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of cranes, and in particular relates to an energy-saving bridge crane and a use method thereof. Background Art

[0002] Bridge cranes are lifting equipment that are horizontally mounted above workshops, warehouses and material yards to lift materials. Bridge cranes are widely used in indoor and outdoor warehouses, factories, docks and open-air storage yards. They are important tools and equipment for mechanization and automation of production processes in modern industrial production and lifting and transportation. Bridge cranes are powerful and complex lifting equipment. The coordinated operation of its various components enables it to move heavy objects in three dimensions.

[0003] Bridge cranes are mainly used for lifting heavy objects in workshops. They mainly realize horizontal displacement through transverse and longitudinal bridge guide rails, and lift heavy objects through up and down displacement of hooks. In the process of lifting heavy objects, cables are mainly used to lift heavy objects. Since the heavy objects are heavy, they are easy to shake when moving at a fast speed, which may easily cause safety accidents.

[0004] At the same time, due to the different heights of different heavy objects, when lifting heavy objects, when the height of the goods is high, due to its low center of gravity, the bottom of the heavy object will shake more obviously during the lifting process, and there is a risk of bumping into the heavy object, which urgently needs to be improved. Summary of the invention

[0005] The object of the present invention is to provide an energy-saving bridge crane and a method of using the same to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: an energy-saving bridge crane, comprising two longitudinal bridge rails, a transverse bridge rail is movably installed at a position between the top ends of the two longitudinal bridge rails, a lifting frame is movably installed at the bottom end of the transverse bridge rail, a lifting cable is installed at the bottom end of the lifting frame near the four corners, the lifting cable is connected to an external cable machine, a telescopic rod is fixedly installed in the middle of the bottom end of the lifting frame, a servo motor is fixedly installed at the bottom end of the telescopic rod, a mounting seat is provided at the bottom end of the lifting frame, the bottom end of the lifting cable is connected to the top end of the mounting seat, and the top end of the mounting seat is fixedly installed with a servo motor. A threaded sleeve is fixedly installed in the middle part, and a screw rod is connected to the internal thread of the threaded sleeve. The bottom end of the screw rod passes through the bottom end of the mounting seat and is fixedly connected to a movable seat. A hook is fixedly connected to the middle part of the bottom end of the movable seat. Extension frames are fixedly installed at equal angles on the outer side surface of the mounting seat, and adjustment guide rails are fixedly installed on the bottom ends of the extension frames. Adjustment components are movably connected to the inside of the adjustment guide rails, and stabilization components are fixedly installed on the bottom ends of the adjustment components. An oil storage component is fixedly installed on the top end of the inner side surface of the extension frame, and the bottom end of the oil storage component is connected to the top end of the mounting seat, and the other end of the oil storage component is communicated with the stabilization component.

[0007] As a further technical solution of the present invention, the transverse bridge guide rail is longitudinally displaced relative to the longitudinal bridge guide rail, and the hoisting frame is transversely displaced relative to the transverse bridge guide rail.

[0008] When lifting goods, the horizontal position of the lifting frame can be adjusted by controlling the longitudinal bridge rails and the transverse bridge rails. When the lifting frame is adjusted to directly above the goods, the hook and the goods can be fixed, and the lifting cable can be reeled in by controlling the external cable machine to drive the goods up to complete the lifting process.

[0009] As a further technical solution of the present invention, the adjustment assembly includes a first fixed seat, the top of the first fixed seat is connected to the bottom of the movable seat near the outer side surface, and the end of the first fixed seat away from the movable seat is movably connected to a connecting rod through a rotating shaft.

[0010] As a further technical solution of the present invention, the end of the connecting rod away from the first fixed seat is movably connected to the second fixed seat through a rotating shaft, the bottom end of the second fixed seat is movably engaged with the adjustment guide rail, and the bottom end of the second fixed seat is connected to the top of the stabilizing component.

[0011] When the lifting is completed, the servo motor can be turned on to drive the screw at the bottom to rotate. At this time, the screw can rotate under the drive of the servo motor, and the telescopic rod will be shortened and drive the servo motor and the screw to move upward. When the screw moves upward, the movable seat and the hook at the bottom can be driven to move upward until the goods are driven to move upward. When the movable seat moves upward, a force can be applied to the adjusting component. At this time, the connecting rod will deflect toward the direction of the movable seat, and drive the second fixed seat to move toward the direction of the movable seat. At this time, multiple second fixed seats will approach each other, and finally drive the stabilizing components at the bottom to approach each other and contact the outer side of the goods, thereby reducing the shaking of the goods.

[0012] By utilizing the rotation of the screw rod and the cooperation between the movable seat and the adjustment component and the stabilizing component, the device can automatically move multiple stabilizing components closer to each other by operating the screw rod after the lifting of the goods is completed, so that after the goods are lifted again, the side edges of the goods can contact with multiple stabilizing components. The limiting effect of the stabilizing component can reduce the shaking of the goods during lifting, reduce safety hazards, and avoid safety accidents.

[0013] As a further technical solution of the present invention, the oil storage assembly includes an oil storage pipe, the top end of the oil storage pipe is connected to the top end of the inner side of the extension frame, the internal movable sleeve of the oil storage pipe is connected with a pressure rod, and the bottom end of the pressure rod is connected to the top end of the movable seat.

[0014] As a further technical solution of the present invention, an oil delivery hose is fixedly connected to one side of the oil storage pipe near the top, an end of the oil delivery hose away from the oil storage pipe is connected to the stabilization component, and hydraulic oil is filled between the top of the inner cavity of the oil storage pipe and the top of the pressure rod.

[0015] When the movable seat moves upward, the distance between the movable seat and the mounting seat decreases, and the pressure rod can be driven upward. When the pressure rod moves upward, pressure is applied to the hydraulic oil inside the oil storage pipe. At this time, the hydraulic oil is pressurized and introduced into the interior of the stabilizing component through the oil delivery hose.

[0016] As a further technical solution of the present invention, the stabilizing assembly includes a main guard plate, the top of which is connected to the bottom of the second fixed seat, a slot is provided at the bottom of the main guard plate, a block is movably connected inside the slot, and a secondary guard plate located below the main guard plate is fixedly installed on one side of the block.

[0017] As a further technical solution of the present invention, a temporary storage tube is fixedly installed on the top of the main guard plate away from the hook, a piston plate is movably sleeved inside the temporary storage tube, a limiting spring is fixedly connected between the top of the inner cavity of the temporary storage tube and the top of the piston plate, a piston rod is fixedly connected to the bottom end of the piston plate, and the bottom end of the piston rod passes through the bottom end of the temporary storage tube and is connected to the top of the block.

[0018] When the hydraulic oil is discharged through the oil delivery hose, it can enter the temporary storage tube. As the hydraulic oil increases, it can exert a downward force on the piston plate. At this time, the limit spring is stretched, and at the same time, the piston plate and the piston rod are driven to move downward, and a downward thrust is exerted on the block and the auxiliary guard plate. At this time, the auxiliary guard plate moves downward relative to the main guard plate, and the side of the higher cargo near the bottom can be limited to prevent it from bumping.

[0019] By utilizing the device to limit the side of the cargo, that is, the cooperation between the movable seat and the oil storage component and the stabilizing component, the device can automatically export the hydraulic oil when limiting the position, and act on the inside of the stabilizing component to increase the overall length of the stabilizing component, so that it can limit the side of the higher cargo and avoid collision with the bottom of the cargo. The whole process is completed automatically, which can significantly improve the transfer efficiency and transfer safety factor.

[0020] A method for using an energy-saving bridge crane comprises the following steps: S1: When lifting goods, the coordinate position of the lifting frame can be adjusted through the longitudinal bridge rail and the transverse bridge rail. After the adjustment is completed, the external cable machine can be controlled to drive the lifting cable to reel in, and the heavy object can be connected to the hook to complete the lifting of the goods; S2: During the hoisting process, the servo motor can be turned on to drive the screw to rotate and move the screw upward. At the same time, the telescopic rod is compressed, and the movable seat and the hook at the bottom rise accordingly. When the movable seat rises, the connecting rod deflects toward the middle and applies an inward pulling force to the second fixed seat. S3: At this time, the second fixing seat and the stabilizing assembly at the bottom move toward the hook until they come into contact with the cargo, protecting the sides of the cargo and reducing its shaking amplitude; S4: At the same time, when the movable seat moves upward, it can simultaneously drive the pressure rod to move upward, and introduce the hydraulic oil inside the oil storage pipe into the temporary storage pipe through the oil delivery hose, and finally drive the piston rod and the auxiliary guard plate to move downward, so as to further protect the bottom position of the side of the higher heavy object and reduce the risk of collision.

[0021] The beneficial effects of the present invention are as follows: 1. The present invention utilizes the rotation of the screw rod and the cooperation between the movable seat and the adjustment component and the stabilizing component, so that after the lifting of the goods is completed, the device can automatically move multiple stabilizing components closer to each other by operating the screw rod, so that after the goods are lifted again, the side edges of the goods can contact with multiple stabilizing components, and the limiting effect of the stabilizing component can reduce the shaking of the goods during lifting, reduce safety hazards, and avoid causing safety accidents.

[0022] 2. The present invention utilizes the device to limit the side of the cargo, that is, the cooperation between the movable seat and the oil storage component and the stabilizing component, so that when the device is limiting, the hydraulic oil can be automatically discharged and act on the inside of the stabilizing component to increase the overall length of the stabilizing component, so that it can limit the side of the higher cargo to avoid collision with the bottom of the cargo. The whole process is completed automatically, which can significantly improve the transfer efficiency and transfer safety factor. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the present invention in a state where the longitudinal bridge guide rail and the transverse bridge guide rail are hidden; Figure 3 It is a schematic diagram of the coordination of the hanging frame, the telescopic rod and the servo motor structure of the present invention; Figure 4 It is an exploded schematic diagram of the threaded sleeve and the screw rod structure of the present invention; Figure 5 It is a schematic diagram of the coordination of the adjusting guide rail and the adjusting assembly as well as the oil storage assembly and the stabilizing assembly structure of the present invention; Figure 6 It is an exploded schematic diagram of the structure of the guide rail adjustment assembly of the present invention; Figure 7 It is a cross-sectional schematic diagram of the internal structure of the oil storage assembly of the present invention; Figure 8 It is a cross-sectional schematic diagram of the internal structure of the stabilizing component of the present invention.

[0024] In the figure: 1. longitudinal bridge guide rail; 2. transverse bridge guide rail; 3. lifting frame; 4. lifting cable; 5. telescopic rod; 6. servo motor; 7. mounting seat; 8. threaded sleeve; 9. screw rod; 10. movable seat; 11. hook; 12. extension frame; 13. adjustment rail; 14. adjustment assembly; 141. first fixed seat; 142. second fixed seat; 143. connecting rod; 15. oil storage assembly; 151. oil storage pipe; 152. pressure rod; 153. oil delivery hose; 16. stabilizing assembly; 161. main guard plate; 162. slot; 163. block; 164. auxiliary guard plate; 165. temporary storage tube; 166. piston plate; 167. piston rod; 168. limit spring. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] like Figures 1 to 8 As shown, in the embodiment of the present invention, an energy-saving bridge crane comprises two longitudinal bridge rails 1, a transverse bridge rail 2 is movably installed at a position between the top ends of the two longitudinal bridge rails 1, a lifting frame 3 is movably installed at the bottom end of the transverse bridge rail 2, a lifting cable 4 is installed at the bottom end of the lifting frame 3 near the four corners, the lifting cable 4 is connected to the external cable machine, a telescopic rod 5 is fixedly installed at the middle of the bottom end of the lifting frame 3, a servo motor 6 is fixedly installed at the bottom end of the telescopic rod 5, a mounting seat 7 is provided at the bottom end of the lifting frame 3, the bottom end of the lifting cable 4 is connected to the top end of the mounting seat 7, a threaded sleeve 8 is fixedly installed in the middle of the top end of the mounting seat 7, the internal thread sleeve of the threaded sleeve 8 is connected with a screw rod 9, the bottom of the screw rod 9 The end passes through the bottom end of the mounting seat 7 and is fixedly connected with a movable seat 10, and a hook 11 is fixedly connected to the middle part of the bottom end of the movable seat 10, and an extension frame 12 is fixedly installed at equal angles on the outer side surface of the mounting seat 7, and an adjusting guide rail 13 is fixedly installed on the bottom end of the extension frame 12, and an adjusting component 14 is movably connected inside the adjusting guide rail 13, and a stabilizing component 16 is fixedly installed on the bottom end of the adjusting component 14, and an oil storage component 15 is fixedly installed on the top end of the inner side surface of the extension frame 12, and the bottom end of the oil storage component 15 is connected to the top end of the mounting seat 7, and the other end of the oil storage component 15 is connected to the stabilizing component 16, the transverse bridge frame guide rail 2 is longitudinally displaced relative to the longitudinal bridge frame guide rail 1, and the lifting frame 3 is transversely displaced relative to the transverse bridge frame guide rail 2.

[0027] When lifting goods, the horizontal position of the lifting frame 3 can be adjusted by controlling the longitudinal bridge guide rail 1 and the transverse bridge guide rail 2. When the lifting frame 3 is adjusted to be directly above the goods, the hook 11 can be fixed to the goods, and the lifting cable 4 can be wound up by controlling the external cable machine to drive the goods to rise and complete the lifting process.

[0028] like Figure 1 and Figure 2 as well as Figure 5 and Figure 6As shown, the adjustment assembly 14 includes a first fixed seat 141, the top of the first fixed seat 141 is connected to the bottom of the movable seat 10 at a position close to the outer side surface, the end of the first fixed seat 141 away from the movable seat 10 is movably connected to a connecting rod 143 through a rotating shaft, the end of the connecting rod 143 away from the first fixed seat 141 is movably connected to a second fixed seat 142 through a rotating shaft, the bottom end of the second fixed seat 142 is movably engaged with the adjustment guide rail 13, and the bottom end of the second fixed seat 142 is connected to the top of the stabilizing assembly 16.

[0029] Embodiment: After the lifting is completed, the servo motor 6 can be turned on to drive the screw rod 9 at the bottom to rotate. At this time, the screw rod 9 can rotate under the drive of the servo motor 6, and the telescopic rod 5 is shortened and drives the servo motor 6 and the screw rod 9 to move upward. When the screw rod 9 moves upward, the movable seat 10 and the hook 11 at the bottom can be driven to move upward until the goods are driven to move upward. When the movable seat 10 moves upward, a force can be applied to the adjusting component 14. At this time, the connecting rod 143 is deflected toward the movable seat 10, and the second fixed seat 142 is driven to move toward the movable seat 10. At this time, multiple second fixed seats 142 are relatively close to each other, and finally drive the stabilizing component 16 at the bottom to move closer to each other to contact the outer side of the goods, thereby reducing the shaking of the goods.

[0030] By utilizing the rotation of the screw rod 9 and the cooperation between the movable seat 10 and the adjustment component 14 and the stabilizing component 16, the device can automatically move multiple stabilizing components 16 closer to each other by operating the screw rod 9 after the cargo is hoisted, so that after the cargo is hoisted again, the side edges of the cargo can contact the multiple stabilizing components 16. The limiting effect of the stabilizing component 16 can reduce the shaking of the cargo during hoisting, reduce safety hazards, and avoid causing safety accidents.

[0031] like Figure 2 and Figure 5 as well as Figure 7 As shown, the oil storage assembly 15 includes an oil storage pipe 151, the top end of the oil storage pipe 151 is connected to the top end of the inner side surface of the extension frame 12, the internal movable sleeve of the oil storage pipe 151 is connected with a pressure rod 152, the bottom end of the pressure rod 152 is connected to the top end of the movable seat 10, and the side of the oil storage pipe 151 close to the top end is fixedly connected with an oil delivery hose 153, the end of the oil delivery hose 153 away from the oil storage pipe 151 is connected to the stabilization assembly 16, and the top end of the inner cavity of the oil storage pipe 151 and the top end of the pressure rod 152 are filled with hydraulic oil.

[0032] When the movable seat 10 moves upward, the distance between the movable seat 10 and the mounting seat 7 is reduced, and the pressure rod 152 can be driven upward. When the pressure rod 152 moves upward, pressure is applied to the hydraulic oil inside the oil storage pipe 151. At this time, the hydraulic oil is pressurized and introduced into the interior of the stabilizing component 16 through the oil delivery hose 153.

[0033] like Figure 1 and Figure 2 as well as Figure 8 As shown, the stabilizing assembly 16 includes a main guard plate 161, the top of which is connected to the bottom of the second fixed seat 142, a slot 162 is provided at the bottom of the main guard plate 161, a block 163 is movably connected inside the slot 162, a secondary guard plate 164 located below the main guard plate 161 is fixedly installed on one side of the block 163, a temporary storage tube 165 is fixedly installed on the top of the main guard plate 161 away from the hook 11, a piston plate 166 is movably sleeved inside the temporary storage tube 165, a limiting spring 168 is fixedly connected between the top of the inner cavity of the temporary storage tube 165 and the top of the piston plate 166, a piston rod 167 is fixedly connected to the bottom end of the piston plate 166, the bottom end of the piston plate 166 is fixedly connected to the piston rod 167, the bottom end of the piston rod 167 passes through the bottom end of the temporary storage tube 165 and is connected to the top of the block 163.

[0034] Embodiment: When the hydraulic oil is discharged through the oil delivery hose 153, it can enter the interior of the temporary storage tube 165, and as the hydraulic oil increases, a downward force can be applied to the piston plate 166. At this time, the limit spring 168 is stretched, and at the same time, the piston plate 166 and the piston rod 167 are driven to move downward, and a downward thrust is applied to the block 163 and the auxiliary guard plate 164. At this time, the auxiliary guard plate 164 moves downward relative to the main guard plate 161, and the side of the higher cargo near the bottom can be limited to prevent it from bumping.

[0035] By utilizing the device to limit the side of the cargo, that is, the cooperation between the movable seat 10 and the oil storage component 15 and the stabilizing component 16, the device can automatically discharge the hydraulic oil when limiting, and act on the inside of the stabilizing component 16, thereby increasing the overall length of the stabilizing component 16, so that it can limit the side of the higher cargo and avoid collision with the bottom of the cargo. The whole process is completed automatically, which can significantly improve the transfer efficiency and transfer safety factor.

[0036] A method for using an energy-saving bridge crane comprises the following steps: S1: When lifting the cargo, the coordinate position of the lifting frame 3 can be adjusted through the longitudinal bridge guide rail 1 and the transverse bridge guide rail 2. After the adjustment is completed, the external cable machine can be controlled to drive the lifting cable 4 to reel in, and the heavy object can be connected to the hook 11 to complete the lifting of the cargo; S2: During the hoisting process, the servo motor 6 can be turned on to drive the screw rod 9 to rotate and drive the screw rod 9 to move upward. At the same time, the telescopic rod 5 is compressed, and the movable seat 10 and the hook 11 at the bottom rise accordingly. When the movable seat 10 rises, the connecting rod 143 deflects toward the middle and applies an inward pulling force to the second fixed seat 142; S3: At this time, the second fixing seat 142 and the stabilizing assembly 16 at the bottom move toward the hook 11 until they come into contact with the cargo, thereby protecting the side of the cargo and reducing its shaking amplitude; S4: At the same time, when the movable seat 10 moves upward, it can synchronously drive the pressure rod 152 to move upward, and introduce the hydraulic oil inside the oil storage pipe 151 into the temporary storage pipe 165 through the oil delivery hose 153, and finally drive the piston rod 167 and the auxiliary guard plate 164 to move downward, so as to further protect the bottom position of the side of the higher heavy object and reduce the risk of collision.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An energy-saving bridge crane, comprising two longitudinal bridge rails (1), characterized in that: A transverse bridge guide rail (2) is movably installed at a position between the top ends of the two longitudinal bridge guide rails (1); a lifting frame (3) is movably installed at the bottom end of the transverse bridge guide rail (2); a lifting cable (4) is installed at the bottom end of the lifting frame (3) near the four corners; the lifting cable (4) is connected to an external cable machine; a telescopic rod (5) is fixedly installed in the middle of the bottom end of the lifting frame (3); a servo motor (6) is fixedly installed at the bottom end of the telescopic rod (5); a mounting seat (7) is provided at the bottom end of the lifting frame (3); the bottom end of the lifting cable (4) is connected to the top end of the mounting seat (7); a threaded sleeve (8) is fixedly installed in the middle of the top end of the mounting seat (7); the internal thread of the threaded sleeve (8) is connected to a screw rod (9); The bottom end of the screw rod (9) passes through the bottom end of the mounting seat (7) and is fixedly connected to a movable seat (10); a hook (11) is fixedly connected to the middle of the bottom end of the movable seat (10); an extension frame (12) is fixedly installed at equal angles on the outer side surface of the mounting seat (7); an adjustment guide rail (13) is fixedly installed on the bottom end of the extension frame (12); an adjustment component (14) is movably connected inside the adjustment guide rail (13); a stabilizing component (16) is fixedly installed on the bottom end of the adjustment component (14); an oil storage component (15) is fixedly installed on the top end of the inner side surface of the extension frame (12); the bottom end of the oil storage component (15) is connected to the top end of the mounting seat (7); and the other end of the oil storage component (15) is connected to the stabilizing component (16).

2. An energy-saving bridge crane according to claim 1, characterized in that: The transverse bridge frame guide rail (2) is longitudinally displaced relative to the longitudinal bridge frame guide rail (1), and the hoisting frame (3) is transversely displaced relative to the transverse bridge frame guide rail (2).

3. An energy-saving bridge crane according to claim 2, characterized in that: The adjustment assembly (14) comprises a first fixed seat (141), the top end of the first fixed seat (141) being connected to the bottom end of the movable seat (10) at a position close to the outer side surface, and the end of the first fixed seat (141) away from the movable seat (10) being movably connected to a connecting rod (143) via a rotating shaft.

4. An energy-saving bridge crane according to claim 3, characterized in that: One end of the connecting rod (143) away from the first fixing seat (141) is movably connected to the second fixing seat (142) via a rotating shaft, the bottom end of the second fixing seat (142) is movably engaged with the adjustment guide rail (13), and the bottom end of the second fixing seat (142) is connected to the top end of the stabilizing component (16).

5. The energy-saving bridge crane according to claim 4, characterized in that: The oil storage assembly (15) comprises an oil storage pipe (151), the top end of the oil storage pipe (151) being connected to the top end of the inner side surface of the extension frame (12), the inner movable sleeve of the oil storage pipe (151) being provided with a pressure rod (152), the bottom end of the pressure rod (152) being connected to the top end of the movable seat (10).

6. An energy-saving bridge crane according to claim 5, characterized in that: An oil delivery hose (153) is fixedly connected to a side of the oil storage pipe (151) close to the top end, and an end of the oil delivery hose (153) away from the oil storage pipe (151) is connected to the stabilizing component (16). Hydraulic oil is filled between the top end of the inner cavity of the oil storage pipe (151) and the top end of the pressure rod (152).

7. An energy-saving bridge crane according to claim 6, characterized in that: The stabilizing assembly (16) comprises a main guard plate (161), the top end of the main guard plate (161) being connected to the bottom end of the second fixing seat (142), a slot (162) being provided at the bottom end of the main guard plate (161), a block (163) being movably engaged inside the slot (162), and a secondary guard plate (164) located below the main guard plate (161) being fixedly mounted on one side of the block (163).

8. An energy-saving bridge crane according to claim 7, characterized in that: A temporary storage tube (165) is fixedly installed at the top of the main guard plate (161) away from the hook (11), and a piston plate (166) is movably sleeved inside the temporary storage tube (165). A limit spring (168) is fixedly connected between the top of the inner cavity of the temporary storage tube (165) and the top of the piston plate (166). The bottom end of the piston plate (166) is fixedly connected to a piston rod (167), and the bottom end of the piston rod (167) passes through the bottom end of the temporary storage tube (165) and is connected to the top end of the block (163).

9. The method for using an energy-saving bridge crane according to claim 8, characterized in that: The following steps are involved: S1: When lifting the cargo, the coordinate position of the lifting frame (3) can be adjusted through the longitudinal bridge guide rail (1) and the transverse bridge guide rail (2). After the adjustment is completed, the external cable machine can be controlled to drive the lifting cable (4) to reel in, and the heavy object can be connected to the hook (11) to complete the lifting of the cargo; S2: During the lifting process, the servo motor (6) can be turned on to drive the screw rod (9) to rotate and drive the screw rod (9) to move upward, and at the same time the telescopic rod (5) is compressed, and the movable seat (10) and the hook (11) at the bottom rise accordingly. When the movable seat (10) rises, the connecting rod (143) deflects toward the middle and applies an inward pulling force to the second fixed seat (142); S3: At this time, the second fixing seat (142) and the stabilizing assembly (16) at the bottom are displaced in a direction close to the hook (11) until they come into contact with the cargo, thereby protecting the sides of the cargo and reducing the amplitude of its shaking; S4: When the movable seat (10) moves upward, it can simultaneously drive the pressure rod (152) to move upward, and guide the hydraulic oil in the oil storage pipe (151) into the temporary storage pipe (165) through the oil delivery hose (153), and finally drive the piston rod (167) and the auxiliary guard plate (164) to move downward, so as to further protect the bottom position of the side of the higher heavy object and reduce the risk of collision.

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