Explosion-proof electric hoist bridge crane

Abstract

An anti-explosion electric hoist bridge crane comprises end beams, a main beam arranged between the two end beams, cart walking mechanisms arranged at the two ends of the end beams, a supporting beam arranged above the main beam, trolley walking mechanisms assembled at the two ends of the supporting beam, a lower supporting frame arranged below the main beam, and a supporting plate fixed between the lower supporting frame and the supporting beam. The supporting plate is located between the two main beams, an upper supporting frame which is horizontally arranged is arranged above the lower supporting frame, a plurality of telescopic supporting legs are arranged between the upper supporting frame and the lower supporting frame, the bottom ends of the telescopic supporting legs are fixed to the top end of the lower supporting frame, and the top ends of the telescopic supporting legs are fixed to the bottom end of the upper supporting frame; a lifting mechanism is assembled at the top end of the upper supporting frame, a lifting hook used for hanging and taking heavy objects is arranged below the main beam, and the lifting hook is connected to the lifting mechanism through a steel wire rope. The device is simple in structure and convenient to use.

Description

Technical Field

[0001] The utility model belongs to the technical field of cranes, in particular to an explosion-proof electric hoist bridge crane. Background Art

[0002] A crane refers to a multi-action lifting machinery that vertically lifts and horizontally transports heavy objects within a certain range, also known as an overhead crane, an overhead crane, or a crane; an electric hoist is a special lifting equipment. In the existing technology, most electric hoists include a main beam and an I-beam track laid at the bottom end of the main beam. The electric hoist can be movably assembled on the I-beam track, and a trolley walking mechanism is provided at both ends of the main beam. A hook is provided under the electric hoist, and the hook is connected to the electric hoist through a wire rope. In the existing technology, electric hoists are generally used in workshops of factories. Due to the structural characteristics of factories, the factory has a space state with a high middle and low sides. The existing electric hoist is arranged under the main beam. Due to the limitations of the factory roof, the lifting height range of the electric hoist is subject to certain limitations, that is, the maximum lifting height of the electric hoist cannot be changed according to the height of the factory roof. Therefore, in the existing technology, the maximum lifting height of the bridge electric hoist crane cannot be adjusted, which is not applicable to factories and workshops with special needs. Utility Model Content

[0003] In order to solve the technical problem that the maximum range of the lifting height of the existing electric hoist bridge crane cannot be changed when used in a factory workshop, the utility model provides an explosion-proof electric hoist bridge crane, comprising two symmetrically arranged end beams, the two end beams being arranged in parallel, two parallel and spaced main beams being arranged between the two end beams, the tops of the main beams being paved with trolley travel tracks, the ends of the two main beams being removable and fixed to the end beams, and the main beams and the end beams both serving as support and fixation. A trolley travel mechanism is provided at both ends of the end beams, the trolley travel mechanism comprising trolley travel wheels and a trolley travel motor, the trolley travel wheels being rotatably mounted on the end beams, the trolley travel motor being fixed on the inner side of the end beams, and the power output shaft of the trolley travel motor being transmission-connected to the trolley travel wheels, the trolley travel motor being connected to a power supply and a lifting control system via a cable, and the trolley travel motor being started, the trolley travel motor drives the trolley travel wheels to rotate, and the trolley travel wheels move along the trolley travel tracks laid on the steel structure factory building. A support beam parallel to the main beam is provided above the main beam. Both ends of the support beam are equipped with a trolley traveling mechanism. The trolley traveling mechanism includes a trolley traveling wheel and a trolley traveling motor. The trolley traveling motor can be rotatably installed at both ends of the support beam. The trolley traveling motor is fixed on the support beam, and the power output shaft of the trolley traveling motor is transmission-connected to the trolley traveling wheel. The top end of the hydraulic cylinder is fixed on the lifting link of the lifting link, and the top of the hydraulic cylinder is fixed on the lifting link, and the top of the hydraulic cylinder is fixed on the lifting link.The top of the upper support frame is equipped with a lifting mechanism, and a hook for hanging heavy objects is provided under the main beam. The hook is connected to the lifting mechanism through a wire rope. The lifting mechanism includes two vertical and spaced support seats, and the bottom ends of the support seats are fixed on the upper support frame. A horizontally arranged lifting drum is provided between the two support seats. The two ends of the lifting drum are rotatably assembled on the support seats through support shafts and bearings. A motor bracket is fixed on the upper support frame at one end of the drum, and a lifting motor is provided on the top of the motor bracket. The power output shaft of the lifting motor is connected to the lifting drum for transmission. The lifting motor is connected to the power supply and the crane control system through a cable. The lifting motor is started, and the lifting motor drives the lifting drum to rotate. The lifting drum moves up and down in the vertical direction by pulling the hook through the wire rope.

[0004] Preferably, the support tube and the column are both rectangular cuboid structures.

[0005] Preferably, both ends of the end beam are detachably provided with buffers for buffering purposes.

[0006] The above solution has the following advantages:

[0007] The upper support frame, lower support frame and retractable legs are set up, and the hydraulic cylinder is started. The hydraulic cylinder pushes the upper support frame to move in the vertical direction to adjust the height of the lifting mechanism. It can increase the lifting range of the sling, so that it can be used in factories and workshops with different height differences; the two main beams are set up to increase the lifting weight of the electric hoist and improve work efficiency; the buffer mechanism is set up to play a buffering role on the electric hoist crane. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model Figure 1 ;

[0009] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model Figure 2 ;

[0010] Figure 3 This is a schematic diagram of the main structure of the utility model;

[0011] Figure 4 This is a left-side structural schematic diagram of the present utility model;

[0012] Figure 5 Schematic diagram of the lifting mechanism Figure 1 ;

[0013] Figure 6 Schematic diagram of the lifting mechanism Figure 2 .

[0014] Figure numerals: 1. end beam; 2. main beam; 3. trolley traveling mechanism; 4. support beam; 5. trolley traveling mechanism; 6. retractable legs; 7. lifting mechanism; 8. hook; 11. buffer; 21. trolley traveling track; 31. trolley traveling wheel; 32. trolley traveling motor; 41. lower support frame; 42. upper support frame; 43. support plate; 51. trolley traveling wheel; 52. trolley traveling motor; 61. support tube; 62. column; 71. lifting drum; 72. support seat; 73. motor bracket; 74. lifting motor; 81. wire rope. DETAILED DESCRIPTION

[0015] like Figure 1-6As shown, an explosion-proof electric hoist bridge crane includes two symmetrically arranged end beams 1. The two end beams 1 are arranged in parallel. Two parallel and spaced main beams 2 are arranged between the two end beams 1. The tops of the main beams 2 are paved with trolley travel tracks 21. The ends of the two main beams 2 can be detachably fixed to the end beams 1. The main beams 2 and the end beams 1 both play a supporting and fixing role. A trolley travel mechanism 3 is provided at both ends of the end beams 1. The trolley travel mechanism 3 includes a trolley travel wheel 31 and a trolley travel motor 32. The trolley travel wheel 31 is rotatably assembled on the end beams 1. The trolley travel motor 32 is fixed on the inner side of the end beam 1, and the power output shaft of the trolley travel motor 32 is connected to the trolley travel wheel 31 through a transmission connection. The trolley travel motor 32 is connected to the power supply and the lifting control system through a cable. The trolley travel motor 32 is started, and the trolley travel motor 32 drives the trolley travel wheel 31 to rotate. The trolley travel wheel 31 moves along the trolley travel track laid on the steel structure factory building. A support beam 4 arranged parallel to the main beam 2 is provided above the main beam 2. Both ends of the support beam 4 are equipped with a trolley travel mechanism 5. The trolley travel mechanism 5 includes a trolley travel wheel 51 and a trolley travel motor 52. The trolley travel motor 52 is rotatably mounted on both ends of the support beam 4. The trolley travel motor 52 is fixed on the support beam 4. The power output shaft of the trolley travel motor 52 is transmission-connected to the trolley travel wheel 51. A horizontally arranged lower support frame 41 is provided below the main beam 2. The lower support frame 41 is in a square shape, and a vertically arranged support plate 43 is fixed between the lower support frame 41 and the support beam 4. The support plate 43 is located between the two main beams 2. A horizontally arranged upper support frame 42 is provided above the lower support frame 41. A plurality of retractable legs 6 are provided between the upper support frame 42 and the lower support frame 41. The bottom end of the retractable leg 6 is fixed to the top end of the lower support frame 41, and the top end of the retractable leg 6 is fixed to the bottom end of the upper support frame 42. The retractable leg 6 includes four vertically arranged lower support frames. The support tubes 61 at the four corners of the frame 41, the bottom ends of the support tubes 61 are fixed on the lower support frame 41, the upper ends of the support tubes 61 are sleeved with vertically arranged columns 62, the top ends of the columns 62 are detachably fixedly connected to the upper support frame 42, and a hydraulic cylinder is provided in the support tubes 61 (not shown in the drawings of the specification), the bottom ends of the hydraulic cylinders are hinged on the lower support frame 41, and the top ends of the hydraulic cylinders are fixed on the bottom ends of the columns 62. When the hydraulic cylinders are started, the hydraulic cylinders push the upper support frame 42 to move in the vertical direction, thereby realizing the height adjustment of the lifting mechanism 7 and being able to increase the lifting range of the sling 8.The top of the upper support frame 41 is equipped with a lifting mechanism 7, and a hook 8 for hanging heavy objects is provided under the main beam 2. The hook 8 is connected to the lifting mechanism 7 through a wire rope 81. The lifting mechanism 7 includes two vertical and spaced support seats 72, the bottom ends of the support seats 72 are fixed on the upper support frame 42, and a horizontally arranged lifting drum 71 is provided between the two support seats 72. The two ends of the lifting drum 71 are rotatably assembled on the support seats 72 through support shafts and bearings. A motor bracket 73 is fixed on the upper support frame 42 at one end of the drum 71, and a lifting motor 74 is provided at the top of the motor bracket 73. The power output shaft of the lifting motor 74 is transmission-connected to the lifting drum 71, and the lifting motor 74 is connected to the power supply and the crane control system through a cable. The lifting motor 74 is started, and the lifting motor 74 drives the lifting drum 71 to rotate, and the lifting drum 71 pulls the hook 8 to move up and down in the vertical direction through the wire rope 81.

[0016] Preferably, the support tube 61 and the column 62 are both rectangular parallelepiped structures.

[0017] Preferably, both ends of the end beam 1 are detachably provided with buffers 11 for buffering purposes.

[0018] Usage process:

[0019] When the utility model is in use, the height of the upper support frame 42 is adjusted according to the height of the workshop, and the hydraulic cylinders in the support pipes 61 are started at the same time. The free ends of the hydraulic cylinders extend and push the columns 62 to move vertically upward along the support pipes 61, thereby lifting the upper support frame 42 to the specified position. Since the lifting drum 71 is set on the upper support frame 42, the lifting drum 71 rises with the rise of the upper support frame. When the overall height of the lifting drum 71 needs to be lowered, the hydraulic cylinders are started, the free ends of the hydraulic cylinders retract, and the upper support frame The free end of the frame is lowered to a certain height; the trolley travel motor 32 is started, and the trolley travel motor 32 drives the trolley travel wheel 31 to rotate, thereby driving the main beam 2 to move longitudinally along the direction of the trolley travel track; the trolley travel motor 52 is started, and the trolley travel motor 52 drives the trolley travel wheel 51 to move along the trolley travel track 21, thereby adjusting the horizontal position of the lifting mechanism 7, and the lifting motor 74 is started, and the lifting motor 74 drives the lifting drum 71 to rotate, and the lifting drum 71 moves in the vertical direction by winding the wire rope to pull the sling 8, thereby lifting the heavy object.

[0020] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", "top", "bottom", "horizontal", "vertical", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the scope of protection of the present invention.

Claims

1. An explosion-proof electric hoist bridge crane, comprising two symmetrically arranged end beams, the two end beams being arranged in parallel, two parallel and spaced main beams being arranged between the two end beams, the tops of the main beams being provided with trolley running tracks, the ends of the two main beams being detachably fixed to the end beams, and trolley running mechanisms being provided at both ends of the end beams, characterized in that: A support beam parallel to the main beam is provided above the main beam, and both ends of the support beam are equipped with a trolley walking mechanism. A horizontally arranged lower support frame is provided below the main beam, and a vertically arranged support plate is fixed between the lower support frame and the support beam, and the support plate is located between the two main beams. A horizontally arranged upper support frame is provided above the lower support frame, and a number of retractable legs are provided between the upper support frame and the lower support frame. The bottom end of the retractable leg is fixed to the top end of the lower support frame, and the top end of the retractable leg is fixed to the bottom end of the upper support frame. A lifting mechanism is installed on the top of the upper support frame, and a hook for hanging heavy objects is provided below the main beam, and the hook is connected to the lifting mechanism through a wire rope.

2. The explosion-proof electric hoist bridge crane according to claim 1, characterized in that: The retractable legs include four support tubes vertically arranged at the four corners of the lower support frame. The bottom ends of the support tubes are fixed to the lower support frame. The upper ends of the support tubes are sleeved with vertically arranged columns. The top ends of the columns are detachably fixed to the upper support frame. Hydraulic cylinders are provided in the support tubes. The bottom ends of the hydraulic cylinders are hinged to the lower support frame, and the top ends of the hydraulic cylinders are fixed to the bottom ends of the columns.

3. The explosion-proof electric hoist bridge crane according to claim 2, characterized in that: The supporting tubes and columns are both rectangular cuboid structures.

4. The explosion-proof electric hoist bridge crane according to claim 1, characterized in that: The trolley travel mechanism includes a trolley travel wheel and a trolley travel motor. The trolley travel wheel can be rotatably assembled on the end beam. The trolley travel motor is fixed on the inner side of the end beam, and the power output shaft of the trolley travel motor is transmission-connected to the trolley travel wheel.

5. The explosion-proof electric hoist bridge crane according to claim 1, characterized in that: The trolley travel mechanism includes trolley travel wheels and a trolley travel motor. The trolley travel motor can be rotatably assembled at both ends of the support beam. The trolley travel motor is fixed on the support beam, and the power output shaft of the trolley travel motor is transmission-connected to the trolley travel wheels.

6. The explosion-proof electric hoist bridge crane according to claim 1, characterized in that: The lifting mechanism includes two vertical and spaced support seats, the bottom ends of the support seats are fixed on the upper support frame, and a horizontally arranged lifting drum is provided between the two support seats. The two ends of the lifting drum are rotatably assembled on the support seats through support shafts and bearings. A motor bracket is fixed on the upper support frame at one end of the drum, and a lifting motor is provided on the top of the motor bracket. The power output shaft of the lifting motor is transmission-connected to the lifting drum.

7. The explosion-proof electric hoist bridge crane according to claim 1, characterized in that: Both ends of the end beam are detachably provided with buffers for buffering purposes.

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