CN117509452A - Hoisting device of electric hoist gantry crane - Google Patents

Abstract

The utility model discloses a hoisting device of an electric hoist gantry crane, which comprises a bracket and a supporting shell, wherein the upper end of the bracket is fixedly connected with a cross beam, the front side and the rear side of the cross beam are fixedly connected with supporting plates, the surfaces of the supporting plates are provided with sliding grooves, the upper end of the supporting shell is fixedly connected with a mounting plate, the end surface of one side of the mounting plate, far away from the cross beam, is fixedly provided with a motor I, and the outer side of an output shaft of the motor I is provided with a driving wheel. The utility model relates to a hoisting device of an electric hoist gantry crane, which not only can limit a rotating shaft to improve the stability of a rotating roller in an idle state, but also has the function of quickly disassembling and assembling a motor II, is convenient for service personnel to overhaul and use, and has the characteristic of automatically lubricating a chute and a sliding block.

Description

Hoisting device of electric hoist gantry crane

Technical Field

The utility model belongs to the technical field of gantry crane hoisting devices, and particularly relates to an electric hoist gantry crane hoisting device.

Background

The electric hoist gantry crane hoisting device is a device for hoisting and carrying heavy objects. It is composed of electric hoist, crane beam, door-type support and motor. The electric hoist is a device for hoisting goods and is usually composed of a motor, a gear box and a steel wire rope;

crane beams are the primary structure for supporting hoist and handling cargo. It is typically made of steel and has sufficient strength and rigidity to withstand the weight of the lifting object. The crane beam generally spans two portal frames and can move along the track. People can conveniently hoist and mount and carry large-scale heavy objects, and work efficiency and safety are improved. The device is widely applied to factories, warehouses, wharfs and other places.

The utility model patent with the bulletin number of CN217676417U discloses an electric hoist gantry crane hoisting device, which comprises a cross beam, the lower surface sliding connection of crossbeam has an arc, the second motor is installed to the one end of arc, the output fixedly connected with rolling subassembly of second motor, the surface winding of rolling subassembly has wire rope, wire rope end department is provided with the connecting piece, the inboard fixedly connected with spliced pole of connecting piece, the surface detachable of spliced pole is connected with the threaded rod, the lower surface fixedly connected with upper junction plate of threaded rod, the lower surface fixedly connected with rigid spring of upper junction plate, the fixed surface of lower lifting hook is connected with the fixed block, the outside of fixed block is connected with the hasp through the axis of rotation, the both sides of hasp are provided with the ring iron, the setting of this patent through hasp, ring iron and spring has reached the purpose of being convenient for take out the rigging, through the setting of reinforcing wire rope and rigid spring, reach the purpose that improves stability.

However, the existing hoisting device of the electric hoist gantry crane has certain defects: firstly, although the existing hoisting device of the electric hoist gantry crane adopts a sliding block, a sliding groove and the like to conduct guiding treatment on a supporting shell, the problem of poor mobility of the supporting shell can be caused by long-time use due to factors such as material friction between the sliding block and the sliding groove;

secondly, current electric hoist gantry crane hoist device adopts the form of bolt fastening to install motor two mostly, can be inconvenient for the operation personnel to demolish motor two like this, overhauls the use, and current electric hoist gantry crane hoist device is mostly through motor two's output shaft two to the live-rollers carry out the connection processing, because under the idle state, under the influence of external factors such as self weight, wind-force, easily causes the hard deflection problem of live-rollers. Therefore, improvements are needed.

Disclosure of Invention

The utility model aims to solve the problems that the long-time use in the background technology can cause poor mobility of a supporting shell, is inconvenient for operators to disassemble and overhaul a motor II and is easy to cause hard deflection of a rotating roller under the influence of external factors such as self weight, wind power and the like, and provides a hoisting device of an electric hoist gantry crane.

In order to solve the problems, the utility model provides the following technical scheme:

the utility model provides an electric hoist gantry crane hoist device, which comprises a bracket and a support shell, the upper end fixedly connected with crossbeam of support, the equal fixedly connected with backup pad in front and back both sides of crossbeam, the spout has been seted up on the surface of backup pad, the upper end fixedly connected with mounting panel of supporting shell, the terminal surface fixed mounting who keeps away from crossbeam one side of mounting panel has motor one, the output shaft of motor one rotates with the mounting panel to be connected, the output shaft outside of motor one is provided with the drive wheel, the drive wheel contacts with the crossbeam, drive wheel and backup pad contact, the terminal surface fixedly connected with slider that the mounting panel is close to crossbeam one side, slider and spout sliding connection, the inboard fixedly connected with installing shell of supporting shell, the inside rotation of installing shell is connected with the axis of rotation, the outside of axis of rotation has fixedly cup jointed the live-roller, the live-roller contacts with the installing shell, the outside of live-roller is provided with the hoist cable, the lower extreme of hoist cable is provided with the couple, the left side contact of installing shell has motor two, the output shaft of motor two rotates with the installing shell is connected, the upper end of crossbeam is provided with lubrication mechanism, motor two, be provided with the steady quick detach mechanism jointly on installation shell, axis of rotation and the crossbeam.

Preferably, the lubrication mechanism comprises an oil storage cylinder, a guide pipe, a guide rod, a movable rod, a partition plate, an elastic block, a magnetic sleeve, an electromagnet, a spring and a protective sleeve, wherein the oil storage cylinder is fixedly connected to the left side of the upper end of a cross beam, a guide hole is formed in the inner wall of the oil storage cylinder, the guide pipe is fixedly connected to the inner wall of the oil storage cylinder, the guide rod is fixedly connected to the bottom of the inner wall of the oil storage cylinder, the movable rod is slidably sleeved on the outer side of the guide rod, the partition plate is fixedly connected with the partition plate, the elastic block is fixedly connected with the elastic block on one side of the end face of the partition plate, the elastic block is slidably connected with the guide hole, the magnetic sleeve is fixedly connected with the guide rod, the electromagnet is fixedly arranged on the outer side of the guide rod, the spring is arranged on the outer side of the guide rod, the protective sleeve is magnetically adsorbed on the magnetic sleeve through the electromagnet so as to pull the movable rod to move upwards along the guide rod, the spring deforms, the partition plate is driven to slide along the inner wall of the oil storage cylinder, the elastic block is extruded on the inner wall of the guide hole, the elastic block finally, the elastic block is separated from the elastic block and falls into the guide hole under the action of the guide pipe, and then flows into the sliding chute through the sliding resistance.

Preferably, one end of the spring is welded with the lower end of the movable rod, the other end of the spring is welded with the bottom of the inner wall of the oil storage cylinder, and the movable rod can be connected through the arrangement of the spring.

Preferably, one end of the protective sleeve is adhered to the lower end of the movable rod, the other end of the protective sleeve is adhered to the bottom of the inner wall of the oil storage cylinder, and the spring can be protected through the arrangement of the protective sleeve.

As the preference, steady quick detach mechanism of dimension includes square, the connecting plate, the inserted block, the installation section of thick bamboo, the end dish, the picture peg, the movable plate, elastic air bag, the spacing hole, motor three, gear one, the threaded rod, gear two, the screw thread section of thick bamboo, baffle and inserted bar, motor two's output shaft two fixedly connected with square, square and axis of rotation sliding connection, motor two's front and back both sides all fixedly connected with connecting plate, the connecting plate contacts with the installation shell, the fixed surface that the connecting plate is close to installation shell one side is connected with the inserted block, the fixed surface that the inserted block is connected with installation shell sliding, the equal fixedly connected with picture peg of both sides of installation shell one side is kept away from to the installation section of thick bamboo, picture peg and installation shell sliding connection, the equal fixedly connected with movable plate of the left and right sides of picture peg, movable plate and installation section of thick bamboo sliding connection, move to keeping away from the direction of installation section of thick bamboo through the pulling end dish, in order to drive the movable plate and remove, elastic air bag takes place to deform, finally, make the surface that the connecting plate is close to installation shell one side is kept away from the motor and move, then, drive the direction that the motor is kept away from the installation shell, make the end face of the installation shell to break away from the end face of the end dish, and make the second maintenance operation break away from the connection, and the maintenance personnel are convenient for detach.

Preferably, the surface of the rotation shaft is provided with a limit hole, a motor III is fixedly arranged on the right side of the upper end of the cross beam, an output shaft III of the motor III is rotationally connected with the cross beam, a gear I is fixedly sleeved on the outer side of the output shaft III of the motor, a threaded rod is arranged in the cross beam through a bearing, a gear II is fixedly sleeved on the outer side of the threaded rod and meshed with the gear I, a threaded cylinder is connected to the outer side of the threaded rod through threads, an inserted rod is fixedly connected to the lower end of the threaded cylinder, the motor III drives the output shaft III to positively rotate so as to drive the gear I to rotate, the gear I drives the gear II to rotate under the meshed relationship so as to drive the threaded rod to rotate, the threaded cylinder is pushed to move along the inner wall of the cross beam under the threaded connection relationship so as to ensure the effective movement of the threaded cylinder, and finally the inserted rod is enabled to be inserted into the limit hole, and the idle rotation roller is limited so as to ensure the stability of the rotation roller.

Preferably, an elastic air bag is adhered to the end face of the moving plate, which is close to one side of the installation shell, and the other end of the elastic air bag is adhered to the installation cylinder, so that the moving plate can be connected for use through the arrangement of the elastic air bag.

Preferably, a guide plate is fixedly connected to the left side of the threaded cylinder, the guide plate is in sliding connection with the cross beam, and the threaded cylinder can be guided through the arrangement of the guide plate.

The utility model relates to a hoisting device of an electric hoist gantry crane, which not only can limit a rotating shaft to improve the stability of a rotating roller in an idle state, but also has the function of quickly disassembling and assembling a motor II, is convenient for service personnel to overhaul and use, and has the characteristics of automatically lubricating a chute and a sliding block, and has the following beneficial effects:

firstly, through setting up structures such as lubrication mechanism, an oil storage section of thick bamboo, honeycomb duct, guide arm, carriage release lever, baffle, elastic block, magnetic sleeve, carry out magnetism through the electro-magnet and adsorb the magnetic sleeve to pulling the carriage release lever and remove, and then drive the baffle and remove, spring atress deformation under the extrusion of the downthehole wall of guide for the elastic block breaks away from the water conservancy diversion hole gradually, and then makes the honeycomb duct be in the circulation state, carries out the water conservancy diversion to lubricating oil, carries out lubrication treatment to the spout, in order to reduce sliding friction.

Secondly, through setting up steady quick detach mechanism of dimension, the square, the connecting plate, the inserted block, the installation section of thick bamboo, the end dish, the picture peg, the movable plate, elastic air bag, spacing hole, motor three, structure such as gear, rotate through motor three drive gear one, under the relationship of meshing, can drive gear two and rotate, and then drive the threaded rod and rotate, remove with promoting the screw thread section of thick bamboo, make the inserted bar insert spacing hole, peg graft spacing to the axis of rotation, in order to guarantee the firm effect of rotor, remove to keeping away from the direction of installation section of thick bamboo through pulling the end dish, in order to drive the picture peg and remove, and then make the picture peg break away from the inserted block, be convenient for the operating personnel to pull motor two and drive the square break away from the axis of rotation, and then carry out quick detach to motor two, detect the use.

Drawings

For ease of illustration, the utility model is described in detail by the following detailed description and the accompanying drawings.

FIG. 1 is a perspective view of the whole structure of the present utility model;

FIG. 2 is a perspective view of the whole structure of the present utility model;

FIG. 3 is a right side view of FIG. 1 of the present utility model;

FIG. 4 is a partial front cross-sectional view of FIG. 1 of the present utility model;

FIG. 5 is an enlarged view of the lubrication mechanism of FIG. 3 in accordance with the present utility model;

FIG. 6 is an enlarged view of the magnetic sleeve of FIG. 5 in accordance with the present utility model;

FIG. 7 is a bottom cross-sectional view of the mounting shell of FIG. 4 in accordance with the present utility model;

FIG. 8 is an enlarged view of FIG. 7 at A in accordance with the present utility model;

fig. 9 is an enlarged view of fig. 7 at B in accordance with the present utility model.

In the figure: 1. a bracket; 2. a support case; 3. a cross beam; 4. a support plate; 5. a chute; 6. a mounting plate; 7. a first motor; 8. a driving wheel; 9. a slide block; 10. a mounting shell; 11. a rotating shaft; 12. a rotating roller; 13. a second motor; 14. a lubrication mechanism; 15. a maintenance and stable quick-release mechanism; 141. an oil storage cylinder; 142. a flow guiding pipe; 143. a guide rod; 144. a moving rod; 145. a partition plate; 146. an elastic block; 147. a magnetic sleeve; 148. an electromagnet; 149. a spring; 1491. a protective sleeve; 151. a square block; 152. a connecting plate; 153. inserting blocks; 154. a mounting cylinder; 155. an end plate; 156. inserting plate; 157. a moving plate; 158. an elastic air bag; 159. a limiting hole; 1591. a third motor; 1592. a first gear; 1593. a threaded rod; 1594. a second gear; 1595. a thread cylinder; 1596. a guide plate; 1597. and a plunger.

Description of the embodiments

As shown in fig. 1-9, the present embodiment adopts the following technical scheme:

examples

The utility model provides an electric hoist gantry crane hoist device, including support 1 and supporting shell 2, the upper end fixedly connected with crossbeam 3 of support 1, the equal fixedly connected with backup pad 4 of both sides around crossbeam 3, spout 5 has been seted up on the surface of backup pad 4, the upper end fixedly connected with mounting panel 6 of supporting shell 2, the terminal surface fixed mounting who keeps away from crossbeam 3 one side of mounting panel 6 has motor one 7, the output shaft and the mounting panel 6 rotation of motor one 7 are connected, the output shaft outside of motor one 7 is provided with drive wheel 8, drive wheel 8 and crossbeam 3 contact, drive wheel 8 and backup pad 4 contact, the terminal surface fixedly connected with slider 9 that mounting panel 6 is close to crossbeam 3 one side, slider 9 and spout 5 sliding connection, the inboard fixedly connected with installation shell 10 of supporting shell 2, the inside rotation of installation shell 10 is connected with axis of rotation 11, the outside fixedly cup joint rotor 12 of axis of rotation 11, rotor 12 and installation shell 10 contact, the outside of rotor 12 is provided with the lifting wire rope, the lower extreme of lifting wire rope is provided with the couple, the left side contact of installation shell 10 has motor two 13, the output shaft two 13 and installation shell 10 rotation are connected.

Wherein the upper end of the cross beam 3 is provided with a lubrication mechanism 14, the lubrication mechanism 14 comprises an oil storage cylinder 141, a guide pipe 142, a guide rod 143, a moving rod 144, a baffle 145, an elastic block 146, a magnetic sleeve 147, an electromagnet 148, a spring 149 and a protective sleeve 1491, the left side of the upper end of the cross beam 3 is fixedly connected with the oil storage cylinder 141, the inner wall of the oil storage cylinder 141 is provided with a guide hole, the inner wall of the guide hole is fixedly connected with the guide pipe 142, the bottom of the inner wall of the oil storage cylinder 141 is fixedly connected with the guide rod 143, the outer side of the guide rod 143 is in sliding sleeve connection with the moving rod 144, both ends of the moving rod 144 are fixedly connected with the baffle 145, the baffle 145 is in sliding connection with the inner wall of the oil storage cylinder 141, the surface of one side of the baffle 145 away from the end face of the moving rod 144 is fixedly connected with the elastic block 146, the elastic block 146 is in sliding connection with the guide hole, the middle of the upper end of the moving rod 144 is fixedly connected with the magnetic sleeve 147, the magnetic sleeve 147 is in sliding connection with the guide rod 143, an electromagnet 148 is fixedly arranged on the outer side of the guide rod 143 and above the movable rod 144, a spring 149 is arranged on the outer side of the guide rod 143, one end of the spring 149 is welded with the lower end of the movable rod 144, the other end of the spring 149 is welded with the bottom of the inner wall of the oil storage barrel 141, the movable rod 144 can be connected for use through the arrangement of the spring 149, a protective sleeve 1491 is arranged on the outer side of the spring 149, one end of the protective sleeve 1491 is adhered with the lower end of the movable rod 144, the other end of the protective sleeve 1491 is adhered with the bottom of the inner wall of the oil storage barrel 141, through the arrangement of the protective sleeve 1491, the spring 149 can be protected, the electromagnet 148 is used for magnetically adsorbing the magnetic sleeve 147 to pull the movable rod 144 to move upwards along the guide rod 143, the spring 149 deforms, the movable rod 144 drives the baffle 145 to slide along the inner wall of the oil storage barrel 141, the elastic block 146 deforms under the extrusion of the inner wall of the oil guide barrel, and finally the elastic block 146 is separated from the guide hole, under the action of force, the elastic block 146 slides along the inner wall of the oil storage cylinder 141, so that the flow guide hole is in a circulation state, and the lubricating oil flows into the flow guide pipe 142, so that the lubricating oil falls into the sliding chute 5, and the sliding chute 5 is lubricated to reduce the sliding resistance of the sliding block 9.

Wherein, a maintenance quick-release mechanism 15 is commonly arranged on the motor II 13, the installation shell 10, the rotating shaft 11 and the cross beam 3, the maintenance quick-release mechanism 15 comprises a square block 151, a connecting plate 152, an inserting block 153, an installation cylinder 154, an end disc 155, an inserting plate 156, a moving plate 157, an elastic air bag 158, a limiting hole 159, a motor III 1591, a gear I1592, a threaded rod 1593, a gear II 1594, a threaded cylinder 1595, a guide plate 1596 and an inserting rod 1597, an output shaft II of the motor II 13 is fixedly connected with the square block 151, the square block 151 is in sliding connection with the rotating shaft 11, the connecting plate 152 is fixedly connected with the connecting plate 152 at the front side and the rear side of the motor II 13, the connecting plate 152 is in contact with the installation shell 10, the surface of the connecting plate 152 close to one side of the installation shell 10 is fixedly connected with the inserting block 153, the inserting block 153 is in sliding connection with the installation shell 10 at the front side and the rear side of the installation shell 10, the end disc 155 is contacted with the end disc 155 at the end face of the installation shell 154 far away from one side of the installation shell 10, the end face of the end disc 155, which is close to one side of the mounting cylinder 154, is fixedly connected with a plugboard 156, the plugboard 156 is in sliding connection with the mounting shell 10, the plugboard 156 is in sliding connection with the plugblock 153, the left side and the right side of the plugboard 156 are fixedly connected with a movable plate 157, the movable plate 157 is in sliding connection with the mounting cylinder 154, the end face of the movable plate 157, which is close to one side of the mounting shell 10, is adhered with an elastic air bag 158, the other end of the elastic air bag 158 is adhered with the mounting cylinder 154, the movable plate 157 can be connected and used through the arrangement of the elastic air bag 158, the surface of the rotating shaft 11 is provided with a limiting hole 159, the right side of the upper end of the cross beam 3 is fixedly provided with a motor three 1591, an output shaft three of the motor three 1591 is in rotating connection with the cross beam 3, the outer side of the output shaft three of the motor three 1591 is fixedly sleeved with a gear one 1592, the inner side of the cross beam 3 is provided with a threaded rod 1593 through a bearing, the outer side of the threaded rod 1593 is fixedly sleeved with a gear two 1594, the gear two 1594 is meshed with the gear one 1592, the threaded rod 1593 is provided with a threaded cylinder 1595 in threaded connection on the outer side, a guide plate 1596 is fixedly connected to the left side of the threaded cylinder 1595, the guide plate 1596 is slidably connected with the cross beam 3, the guide plate 1596 is arranged to guide the threaded cylinder 1595, the inserted rod 1597 is fixedly connected to the lower end of the threaded cylinder 1595, the output shaft three is driven by the motor three 1591 to rotate positively so as to drive the gear one 1592 to rotate, the gear one 1592 drives the gear two 1594 to rotate under the meshed relationship, the threaded rod 1593 is driven to rotate, the threaded cylinder 1595 is driven to move under the threaded connection relationship so as to push the threaded cylinder 1595 to drive the guide plate 1596 to slide along the inner wall of the cross beam 3, the guide plate 1595 is guaranteed to effectively move, the inserted rod 1597 is pushed to move downwards, finally, the inserted rod 1597 is enabled to be inserted into the limit hole 159, the idle rotating roller 12 is enabled to limit the rotating roller 12, the rotating plate 155 is driven to move in the direction away from the installation drum 154 so that the motor three 1591 is driven to move, the motor 156 is driven to move the motor 156, and the air bag 153 is driven to move the air bag 153 is driven to be separated from the installation drum 153, and then the air bag 153 is driven to move the air bag 153 to be separated from the installation drum 13 by the installation drum 13, and the air bag 153, the air bag is finally, and the air bag installation device is convenient to move the air bag is driven to move the air bag 15, and the air bag 15 is separated from the air bag 13, and the air bag 13.

The use state of the utility model is as follows: when the rotary roller 12 is used, the motor III 1591 is started to drive the output shaft III to rotate positively so as to drive the gear one 1592 to rotate, the gear one 1592 drives the gear two 1594 to rotate under the meshing relationship so as to drive the threaded rod 1593 to rotate, the threaded cylinder 1595 is pushed to move under the threaded connection relationship, the threaded cylinder 1595 drives the guide plate 1596 to slide along the inner wall of the cross beam 3 so as to ensure the effective movement of the threaded cylinder 1595, and the inserted rod 1597 is pushed to move downwards, so that the inserted rod 1597 is finally inserted into the limiting hole 159 to limit the idle rotary roller 12, and the stability of the rotary roller 12 is ensured;

when the cargo needs to be lifted, the motor III 1591 is started to drive the output shaft III to reversely rotate, the same is obtained, finally the inserted rod 1597 is immersed into the cross beam 3, then the motor II 13 is used for driving the output shaft II to rotate so as to drive the square block 151 to rotate and further drive the rotating roller 12 to rotate, the lifting steel cable is wound to finish the lifting operation of the cargo, the supporting shell 2 can drive the sliding block 9 to slide along the inner wall of the sliding groove 5 through the arrangement of the motor I7 and the driving wheel 8, so that the stable movement of the supporting shell 2 is ensured, the installation shell 10 is driven to move, and finally the position of the cargo is adjusted;

starting the electromagnet 148 to magnetically adsorb the magnetic sleeve 147 so as to pull the moving rod 144 to move upwards along the guide rod 143, deforming the spring 149, driving the baffle 145 to slide along the inner wall of the oil storage cylinder 141 by the moving rod 144, deforming the elastic block 146 under the extrusion of the inner wall of the guide hole, finally enabling the elastic block 146 to be separated from the guide hole, sliding the elastic block 146 along the inner wall of the oil storage cylinder 141 under the action of force, and finally enabling the guide hole to be in a circulation state, so that lubricating oil flows into the guide pipe 142, further enabling the lubricating oil to fall into the sliding groove 5, and performing lubrication treatment on the sliding groove 5 so as to reduce the sliding resistance of the sliding block 9;

when the second motor 13 needs to be overhauled, the end disc 155 is pulled to move in the direction away from the mounting barrel 154, the inserting plate 156 is pulled to move, the inserting plate 156 drives the moving plate 157 to move, the elastic air bag 158 deforms, the inserting plate 156 is finally separated from the inserting block 153, then the second motor 13 is pulled to move in the direction away from the mounting shell 10, the connecting plate 152 is driven to move, the inserting block 153 is further separated from the mounting shell 10, the block 151 is finally driven to be separated from the rotating shaft 11, and the second motor 13 is conveniently and rapidly detached, overhauled and used by operators.

Claims (8)

1. The utility model provides an electric block gantry crane hoist device, includes support (1) and supporting shell (2), its characterized in that: the upper end fixedly connected with crossbeam (3) of support (1), the front and back both sides of crossbeam (3) all fixedly connected with backup pad (4), spout (5) have been seted up on the surface of backup pad (4), the upper end fixedly connected with mounting panel (6) of supporting shell (2), the terminal surface fixed mounting of one side of crossbeam (3) is kept away from to mounting panel (6) has motor one (7), the output shaft of motor one (7) rotates with mounting panel (6) to be connected, the output shaft outside of motor one (7) is provided with drive wheel (8), drive wheel (8) and crossbeam (3) contact, drive wheel (8) and backup pad (4) contact, terminal surface fixedly connected with slider (9) near crossbeam (3) one side of mounting panel (6) are connected with spout (5) sliding, the inboard fixedly connected with installation shell (10) of supporting shell (2), the inside rotation of installation shell (10) is connected with axis of rotation (11), the outside of axis of rotation (11) has fixedly cup jointed rotor (12), rotor (12) and installation shell (10) rotate and be connected with, the outside of rotor (12) is provided with and lifts by crane the motor, the lower extreme (13) of cable is provided with the couple (13) of cable, the couple side two sides are provided with, the output shaft of the motor II (13) is rotationally connected with the mounting shell (10), a lubricating mechanism (14) is arranged at the upper end of the cross beam (3), and a stable and quick-release mechanism (15) is arranged on the motor II (13), the mounting shell (10), the rotating shaft (11) and the cross beam (3) together.

2. The hoisting device of the electric hoist gantry crane according to claim 1, characterized in that: the lubricating mechanism (14) comprises an oil storage cylinder (141), a guide pipe (142), a guide rod (143), a moving rod (144), a baffle plate (145), an elastic block (146), a magnetic sleeve (147), an electromagnet (148), a spring (149) and a protective sleeve (1491), wherein the oil storage cylinder (141) is fixedly connected to the left side of the upper end of a cross beam (3), a guide hole is formed in the inner wall of the oil storage cylinder (141), the guide pipe (142) is fixedly connected to the inner wall of the guide hole, the guide rod (143) is fixedly connected to the bottom of the inner wall of the oil storage cylinder (141), the moving rod (144) is sleeved on the outer side of the guide rod (143) in a sliding manner, the baffle plate (145) is fixedly connected with the inner wall of the oil storage cylinder (141), the baffle plate (145) is fixedly connected with the elastic block (146) on one side of the end face of the baffle plate (145), the elastic block (146) is fixedly connected with the guide hole in a sliding manner, the magnetic sleeve (147) is fixedly connected to the middle of the upper end of the moving rod (144), the magnetic sleeve (147) is fixedly connected with the guide rod (143) in a sliding manner with the guide rod (143), the outer side of the guide rod (143) is in a sliding manner, the guide rod (144) is arranged on the outer side of the guide rod (144) and is fixedly arranged on the side of the electromagnet (149), a protective sleeve (1491) is arranged on the outer side of the spring (149).

3. The hoisting device of the electric hoist gantry crane according to claim 2, characterized in that: one end of the spring (149) is welded with the lower end of the movable rod (144), and the other end of the spring (149) is welded with the bottom of the inner wall of the oil storage cylinder (141).

4. The hoisting device of the electric hoist gantry crane according to claim 2, characterized in that: one end of the protective sleeve (1491) is adhered to the lower end of the movable rod (144), and the other end of the protective sleeve (1491) is adhered to the bottom of the inner wall of the oil storage cylinder (141).

5. The hoisting device of the electric hoist gantry crane according to claim 1, characterized in that: the maintenance quick-release mechanism (15) comprises a square block (151), a connecting plate (152), an inserting block (153), a mounting cylinder (154), an end disc (155), an inserting plate (156), a moving plate (157), an elastic air bag (158), a limiting hole (159), a motor III (1591), a gear I (1592), a threaded rod (1593), a gear II (1594), a threaded cylinder (1595), a guide plate (1596) and an inserting rod (1597), an output shaft II of the motor II (13) is fixedly connected with the square block (151), the square block (151) is in sliding connection with a rotating shaft (11), connecting plates (152) are fixedly connected with the front side and the rear side of the motor II (13), the connecting plate (152) is in contact with a mounting shell (10), the surface of the connecting plate (152) close to one side of the mounting shell (10) is fixedly connected with the inserting block (153), the inserting block (153) is in sliding connection with the mounting shell (10), the front side and the rear side of the mounting shell (10) are fixedly connected with the mounting cylinder (154), the end surface of the end disc (154) far from one side of the mounting shell (10) is contacted with the end disc (155), the end disc (156) is close to the side of the mounting shell (156) is fixedly connected with the inserting plate (153), the left side and the right side of the plugboard (156) are fixedly connected with a moving plate (157), and the moving plate (157) is in sliding connection with the mounting cylinder (154).

6. The hoisting device of the electric hoist gantry crane according to claim 5, characterized in that: limiting holes (159) are formed in the surface of the rotating shaft (11), a motor three (1591) is fixedly mounted on the right side of the upper end of the cross beam (3), an output shaft of the motor three (1591) is rotationally connected with the cross beam (3), a gear one (1592) is fixedly sleeved on the outer side of the output shaft of the motor three (1591), a threaded rod (1593) is mounted in the cross beam (3) through a bearing, a gear two (1594) is fixedly sleeved on the outer side of the threaded rod (1593), the gear two (1594) is meshed with the gear one (1592), a threaded cylinder (1595) is connected to the outer side of the threaded rod (1593) through threads, and a plunger rod (1597) is fixedly connected to the lower end of the threaded cylinder (1595).

7. The hoisting device of the electric hoist gantry crane according to claim 5, characterized in that: an elastic air bag (158) is adhered to the end face of the moving plate (157) close to one side of the mounting shell (10), and the other end of the elastic air bag (158) is adhered to the mounting cylinder (154).

8. The hoisting device of the electric hoist gantry crane according to claim 6, wherein: the left side of screw thread section of thick bamboo (1595) is fixedly connected with baffle (1596), and baffle (1596) and crossbeam (3) sliding connection.