A split column cantilever crane

Abstract

The utility model discloses a split-column cantilever crane, comprising a base and a protection mechanism; the base: a column is arranged in the middle of the upper end thereof, the upper end of the column is rotatably connected with a cross beam through a bearing, anti-skid rollers are placed in avoidance grooves arranged at the front and rear ends of the cross beam, two longitudinally adjacent anti-skid rollers are rotatably connected to the inside of a mounting frame through bearings, the lower ends of the mounting frame are fixedly connected to the upper end of an outer shell, the front and rear sides of the lower end of the outer shell are respectively provided with mounting grooves, the inside of the outer shell is rotatably connected with a winding roll through a bearing, the outer surface of the winding roll is wound with a steel wire rope, and the steel wire rope is slidably connected to a pulley inside the sling; the protection mechanism: comprising a column and a protection plate, the split-column cantilever crane can perform damping and shock absorption protection through force reversal when a top-rushing phenomenon occurs, replacing the traditional method of performing protection work on an electric hoist through a fire breaker, thereby extending the service life of the split-column cantilever crane.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting equipment, in particular to a split column cantilever crane. Background Art

[0002] Split column cantilever crane is a light working strength crane. Split column cantilever crane has the advantages of light weight, large carrying capacity, high working level, large working surface, convenient adjustment, etc. It is widely used in light and heavy industries such as machinery manufacturing, automobile manufacturing, papermaking, plastic processing, household appliances, etc.;

[0003] When the split column cantilever crane is working, most of the time, the wire rope is released through the winding roller and other equipment to make the spreader descend. The staff connects the spreader with the corresponding goods. After the connection is completed, the winding roller is driven by the transmission equipment to rotate and retract part of the wire rope to make the spreader rise and lift the goods. Then, the crossbeam is driven by the external adjustment equipment to rotate. After rotating to the designated location, the driving equipment drives the goods to move along the crossbeam through the anti-slip roller, thereby realizing the transportation of the goods.

[0004] Existing split-column cantilever cranes are usually protected by being equipped with a fire breaker. When in use, after the spreader is lifted to a specified height, the fire breaker can cut off the power supply of the transmission equipment, thereby restricting the spreader. However, in actual operation, the fire breaker may fail to work due to various external forces or after long-term use, causing the spreader to frequently top-out. In mild cases, it causes excessive wear of the split-column cantilever crane, reducing its service life. In severe cases, production safety accidents may occur. To this end, we propose a split-column cantilever crane. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the existing defects and provide a split-column cantilever crane. Through the coordinated arrangement of the top plate and the trapezoidal block, when the top impact phenomenon occurs, damping and shock absorption protection can be performed by reversing the force. At the same time, the size of the protection component is also reduced, and the impact force on the split-column cantilever crane is further reduced, preventing the split-column cantilever crane from being damaged by the impact force generated by the top impact of the hoist. Instead of the traditional way of protecting the electric hoist with a fire breaker, the service life of the split-column cantilever crane is extended, and the problems in the background technology can be effectively solved.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a split column cantilever crane, comprising a base and a protective mechanism;

[0007] Base: A column is arranged in the middle of the upper end thereof, and the upper end of the column is rotatably connected to a crossbeam through a bearing, and anti-skid rollers are placed in the avoidance grooves arranged at the front and rear ends of the crossbeam, and two longitudinally adjacent anti-skid rollers are rotatably connected to the inside of a mounting frame through bearings, and the lower end of the mounting frame is fixedly connected to the upper end of the outer shell, and mounting grooves are arranged on the front and rear sides of the lower end of the outer shell, respectively, and a winding roll is rotatably connected to the inside of the outer shell through a bearing, and a steel wire rope is wound around the outer surface of the winding roll, and the steel wire rope is slidably connected to the pulley inside the sling;

[0008] Protection mechanism: it includes uprights and protection plates, the uprights are respectively arranged at the four corners of the lower end of the shell, the uprights are respectively slidably connected with the sliding holes corresponding to the upper ends of the protection plates, the steel wire ropes are respectively slidably connected with the limiting sliding grooves corresponding to the upper ends of the protection plates, and through the coordinated arrangement of the top plate and the trapezoidal block, when the top impact phenomenon occurs, damping and shock absorption protection can be performed by reversing the force, and the size of the protection component is also reduced, further reducing the impact force on the split-column cantilever crane, preventing the split-column cantilever crane from being damaged by the impact force generated by the top impact of the sling, replacing the traditional way of protecting the electric hoist through a fire breaker, thereby extending the service life of the split-column cantilever crane.

[0009] Furthermore, it also includes a control switch group, which is located outside the base. The input end of the control switch group is electrically connected to the external power supply and can regulate the electrical components inside the device.

[0010] Furthermore, the protective mechanism also includes a fixed rod, a top plate, a guide slide column, a connecting plate and a trapezoidal block. The fixed rod is respectively arranged on the front and rear sides of the upper end of the protective plate, the upper end of the fixed rod is provided with a top plate, the guide slide column is arranged inside the mounting groove, the left and right sides of the outer arc surface of the guide slide column are slidably connected with connecting plates, the connecting plates are slidably connected to the inner wall of the mounting groove, the lower end of the connecting plate is provided with a trapezoidal block, and the inclined surface arranged at the lower end of the trapezoidal block is in contact with the upper end of the top plate, so that the vertical impact force of the sling on the protective plate is transferred to the horizontal direction.

[0011] Furthermore, the protection mechanism also includes springs, which are respectively arranged between one end of the connecting plate away from the inner center of the shell and the inner wall of the installation groove. The springs are both sleeved on the outside of the left and right sides of the guide slide column, and shock absorption and buffering are performed under the elastic action of the springs.

[0012] Furthermore, the protective mechanism also includes a hydraulic damper, which is respectively arranged on the left and right sides between the relative inner sides of the outer shell and the protective plate. The hydraulic damper provides resistance to movement, dissipates the impact force generated by the sling hitting the top, and uses damping to absorb energy and reduce shock.

[0013] Furthermore, it also includes a motor, which is arranged at the right end of the shell, the left end of the motor output shaft is fixedly connected to the right end of the winding roller, the input end of the motor is electrically connected to the output end of the control switch group, and can drive the winding roller to rotate and retract part of the wire rope to make the sling rise, and then lift the goods.

[0014] Furthermore, it also includes a driving motor, which is arranged at the front end of the installation frame, and the rear end of the driving motor output shaft is fixedly connected to the front end of the anti-slip roller on the front side, and the input end of the driving motor is electrically connected to the output end of the control switch group, so that the goods can be driven to move through the anti-slip roller.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] During the actual operation of the cargo rising process, the fire breaker may fail to work due to various external forces, which will cause the hook to continue to rise, resulting in a top impact. At this time, the hook contacts the protective plate, and the protective plate begins to move upward along the vertical rod under the pressure of the hook. The protective plate drives the top plate to move upward through the fixed rod. When the trapezoidal block contacts the top plate, the trapezoidal block moves along the guide slide column to the end away from the center of the shell. The spring contracts, so that the vertical impact force of the sling on the protective plate is transferred to the horizontal direction. Through the sliding friction damping between the connecting plate and the guide slide column, the shock absorption and the elastic action of the spring are realized. The hydraulic damper provides resistance to movement, dissipates the impact force caused by the spreader hitting the top, and uses damping to absorb energy and reduce shock, so as to prevent damage to the outer shell and internal equipment caused by the spreader hitting the top. Through the coordinated arrangement of the top plate and the trapezoidal block, when the top hitting phenomenon occurs, damping and shock reduction protection can be performed by reversing the force, and the size of the protection component is also reduced, so as to further reduce the impact force on the split-column cantilever crane and prevent the split-column cantilever crane from being damaged by the impact force generated by the spreader hitting the top. It replaces the traditional way of protecting the electric hoist by a fire breaker, and prolongs the service life of the split-column cantilever crane. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the front side cross-sectional structure of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the protective mechanism of the utility model.

[0020] In the figure: 1 base, 2 control switch group, 3 column, 4 beam, 5 anti-skid roller, 6 installation frame, 7 shell, 8 installation groove, 9 protection mechanism, 91 column, 92 protection plate, 93 fixing rod, 94 top plate, 95 guide slide column, 96 connecting plate, 97 trapezoidal block, 98 spring, 99 hydraulic damper, 10 winding roller, 11 wire rope, 12 sling, 13 motor, 14 drive motor. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-3 ,This embodiment provides a technical solution: a split column cantilever crane, comprising a base 1 and a protective mechanism 9;

[0023] Base 1: A column 3 is provided in the middle of its upper end, and the upper end of the column 3 is rotatably connected to a crossbeam 4 through a bearing, and anti-skid rollers 5 are placed in the avoidance grooves provided at the front and rear ends of the crossbeam 4, and two longitudinally adjacent anti-skid rollers 5 are rotatably connected to the inside of a mounting frame 6 through bearings, and the lower ends of the mounting frame 6 are fixedly connected to the upper end of the shell 7, and the front and rear sides of the lower end of the shell 7 are respectively provided with mounting grooves 8, and the inside of the shell 7 is rotatably connected to a winding roll 10 through a bearing, and the outer surface of the winding roll 10 is wound with a steel wire rope 11, and the steel wire rope 11 is connected to the inside of the sling 12. The pulley is connected by sliding. When working, the staff connects the sling 12 with the corresponding goods. After the connection is completed, the transmission device drives the winding roller 10 to rotate and retract part of the wire rope 11 through the regulation of the control device to make the sling 12 rise and lift the goods. Then, the external adjustment device drives the crossbeam 3 to rotate. After rotating to the designated location, the drive device starts to run through the regulation of the control device. The output shaft of the drive device drives the anti-skid roller 5 on the front side to rotate, so that the anti-skid roller 5 drives the goods to move along the crossbeam 3, thereby realizing the transportation of the goods.

[0024] The protection mechanism 9 includes a vertical rod 91 and a protection plate 92. The vertical rods 91 are respectively arranged at the four corners of the lower end of the housing 7. The vertical rods 91 are respectively slidably connected with the sliding holes corresponding to the upper ends of the protection plates 92. The steel wire ropes 11 are respectively slidably connected with the limit sliding grooves corresponding to the upper ends of the protection plates 92. The protection mechanism 9 also includes a fixed rod 93, a top plate 94, a guide slide column 95, a connecting plate 96 and a trapezoidal block 97. The fixed rods 93 are respectively arranged at the front and rear sides of the upper end of the protection plate 92. The upper ends of the fixed rods 93 are each provided with a top plate 94. The guide slide columns 95 are each arranged inside the mounting groove 8. The left and right sides of the outer arc surface of the guide slide column 95 are slidably connected with the connecting plate 96. The connecting plates 96 are all slidably connected to the inner wall of the mounting groove 8, and the lower ends of the connecting plates 96 are all provided with trapezoidal blocks 97. The inclined surfaces provided at the lower ends of the trapezoidal blocks 97 are in contact with the upper ends of the top plates 94. The protection mechanism 9 also includes springs 98, which are respectively provided between the ends of the connecting plates 96 away from the inner center of the housing 7 and the inner wall of the mounting groove 8. The springs 98 are all sleeved on the outside of the left and right sides of the guide slide column 95. The protection mechanism 9 also includes hydraulic dampers 99, which are respectively provided on the left and right sides between the housing 7 and the relative inner side surfaces of the protective plate 92. In the actual operation process during the rising of the goods, the fire extinguisher is easily broken due to various external forces. The phenomenon of failure and not working will cause the hook 12 to continue to rise, thereby causing the top impact. At this time, the hook 12 contacts the protective plate 92, and the protective plate 92 begins to move upward along the vertical rod 91 under the pressure of the hook 12. The protective plate 92 drives the top plate 94 to move upward through the fixed rod 93. When the trapezoidal block 97 contacts the top plate 94, the trapezoidal block 97 moves along the guide slide column 95 to the end away from the center of the shell 1. The spring 98 contracts, so that the vertical impact force of the sling 12 on the protective plate 92 is transferred to the horizontal direction, and the sliding friction damping between the connecting plate 96 and the guide slide column 95 is used. Under the elastic action of the spring 98, the shock absorption and buffering At the same time, the hydraulic damper 99 provides resistance to movement, consumes the impact force generated by the top impact of the hanger 12, and uses damping to absorb energy and reduce shock, so as to prevent the shell 1 and internal equipment from being damaged by the top impact of the hanger 12. Through the coordinated arrangement of the top plate 95 and the trapezoidal block 97, when the top impact phenomenon occurs, damping and shock absorption protection can be performed by reversing the force. At the same time, the size of the protection component is also reduced, and the impact force on the split-column cantilever crane is further reduced. The split-column cantilever crane is prevented from being damaged by the impact force generated by the top impact of the hanger, replacing the traditional way of protecting the electric hoist by a fire breaker, thereby extending the service life of the split-column cantilever crane.

[0025] Among them: it also includes a control switch group 2, which is located outside the base 1, and the input end of the control switch group 2 is electrically connected to the external power supply, which can regulate the electrical components inside the device.

[0026] Among them: it also includes a motor 13, the motor 13 is arranged at the right end of the shell 7, the left end of the output shaft of the motor 13 is fixedly connected to the right end of the winding roller 10, and the input end of the motor 13 is electrically connected to the output end of the control switch group 2. When working, through the regulation of the control switch group 2, the motor 13 starts to run, the output shaft drives the winding roller 10 to rotate, the winding roller 10 releases the wire rope 11 to make the sling 12 descend, and the staff connects the sling 12 with the corresponding goods.

[0027] Wherein: it also includes a driving motor 14, which is arranged at the front end of the installation frame 6, and the rear end of the output shaft of the driving motor 14 is fixedly connected to the front end of the anti-skid roller 5 on the front side, and the input end of the driving motor 14 is electrically connected to the output end of the control switch group 2. Through the regulation of the control switch group 2, the driving motor 14 starts to run, and the output shaft of the driving motor 14 drives the anti-skid roller 5 on the front side to rotate, thereby driving the goods to move through the anti-skid roller 5.

[0028] The working principle of a split-column cantilever crane provided by the utility model is as follows: before use, the split-column cantilever crane is moved to a designated work location by an external traction device, so that the base 1 is installed and docked with the corresponding work station, thereby realizing the support and fixation of the base 1 and the upper equipment. During operation, the motor 13 starts to run through the regulation of the control switch group 2, and the output shaft of the motor 13 drives the winding roller 10 to rotate, and the winding roller 10 releases the wire rope 11 to make the sling 12 descend, and the staff connects the sling 12 with the corresponding cargo. After the connection is completed, through the regulation of the control switch group 2, the motor 13 drives the winding roller 10 to rotate and retract part of the wire rope 11 to make the sling 12 rise and lift the cargo. During the actual operation process of the cargo rising, the fire breaker may fail to work due to various external forces, which will cause the hook 12 to continue to rise, thereby causing the top rush. At this time, the hook 12 contacts the protective plate 92, and the protective plate 92 begins to move along the vertical direction under the pressure of the hook 12. The rod 91 moves upward, and the protective plate 92 drives the top plate 94 to move upward through the fixed rod 93. When the trapezoidal block 97 contacts the top plate 94, the trapezoidal block 97 moves along the guide slide column 95 to the end away from the inner center of the shell 1, and the spring 98 contracts, so that the vertical impact force of the sling 12 on the protective plate 92 is transferred to the horizontal direction. Through the sliding friction damping of the connecting plate 96 and the guide slide column 95, under the elastic action of the spring 98, shock absorption and buffering are performed. At the same time, the hydraulic damper 99 provides resistance to movement to consume the impact force generated by the top impact of the sling 12. Damping is used to absorb energy and reduce shock to prevent damage to the shell 1 and internal equipment caused by the top impact of the sling 12. Then, the cross beam 3 is driven to rotate through the external adjustment device. After rotating to the designated location, the drive motor 14 starts to run through the control of the control switch group 2. The output shaft of the drive motor 14 drives the anti-skid roller 5 on the front side to rotate, so that the anti-skid roller 5 drives the goods to move along the cross beam 3, thereby realizing the transportation of the goods.

[0029] It is worth noting that the motor 13 and the drive motor 14 disclosed in the above embodiments can be selected from 5I K200A-AF, and the control switch group 2 is provided with control buttons corresponding to the motor 13 and the drive motor 14 for controlling the switches thereof.

[0030] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A split column cantilever crane, characterized in that: It comprises a base (1) and a protective mechanism (9); The base (1) is provided with a column (3) in the middle of the upper end thereof, the upper end of the column (3) is rotatably connected to a cross beam (4) through a bearing, anti-skid rollers (5) are placed in avoidance grooves provided at the front and rear ends of the cross beam (4), two longitudinally adjacent anti-skid rollers (5) are rotatably connected to the inside of a mounting frame (6) through bearings, the lower end of the mounting frame (6) is fixedly connected to the upper end of the outer shell (7), the front and rear sides of the lower end of the outer shell (7) are respectively provided with mounting grooves (8), the inside of the outer shell (7) is rotatably connected to a winding roll (10) through a bearing, the outer surface of the winding roll (10) is wound with a steel wire rope (11), and the steel wire rope (11) is slidably connected to a pulley inside the sling (12) The protection mechanism (9) comprises a vertical rod (91) and a protection plate (92), wherein the vertical rod (91) is respectively arranged at the four corners of the lower end of the housing (7), the vertical rod (91) is respectively slidably connected to the sliding holes correspondingly arranged at the upper end of the protection plate (92), and the steel wire rope (11) is respectively slidably connected to the limiting sliding grooves correspondingly arranged at the upper end of the protection plate (92).

2. A split column cantilever crane according to claim 1, characterized in that: It also comprises a control switch group (2), wherein the control switch group (2) is located outside the base (1), and an input end of the control switch group (2) is electrically connected to an external power supply.

3. The split column cantilever crane according to claim 1, characterized in that: The protection mechanism (9) further comprises a fixing rod (93), a top plate (94), a guide slide column (95), a connecting plate (96) and a trapezoidal block (97), wherein the fixing rod (93) is respectively arranged at the front and rear sides of the upper end of the protection plate (92), the upper end of the fixing rod (93) is provided with a top plate (94), the guide slide column (95) is arranged inside the mounting groove (8), the left and right sides of the outer arc surface of the guide slide column (95) are slidably connected with a connecting plate (96), the connecting plate (96) is slidably connected with the inner wall of the mounting groove (8), the lower end of the connecting plate (96) is provided with a trapezoidal block (97), and the inclined surface arranged at the lower end of the trapezoidal block (97) is in contact with the upper end of the top plate (94).

4. A split column cantilever crane according to claim 3, characterized in that: The protection mechanism (9) further comprises a spring (98), wherein the spring (98) is respectively arranged between an end of the connecting plate (96) away from the inner center of the housing (7) and the inner wall of the mounting groove (8), and the spring (98) is sleeved on the outside of the left and right sides of the guide slide column (95).

5. The split column cantilever crane according to claim 1, characterized in that: The protection mechanism (9) further comprises a hydraulic damper (99), wherein the hydraulic damper (99) is respectively arranged on the left and right sides between the relative inner sides of the outer shell (7) and the protection plate (92).

6. The split column cantilever crane according to claim 2, characterized in that: It also includes a motor (13), which is arranged at the right end of the housing (7), the left end of the output shaft of the motor (13) is fixedly connected to the right end of the winding roll (10), and the input end of the motor (13) is electrically connected to the output end of the control switch group (2).

7. The split column cantilever crane according to claim 2, characterized in that: It also includes a drive motor (14), which is arranged at the front end of the installation frame (6), the rear end of the output shaft of the drive motor (14) is fixedly connected to the front end of the anti-slip roller (5) on the front side, and the input end of the drive motor (14) is electrically connected to the output end of the control switch group (2).

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