Heavy hammer limiting equipment of crane gantry hook system

Abstract

The utility model discloses a heavy hammer limiting device of a crane gantry hook system, and relates to the technical field of winching. A heavy hammer limiting device of a crane gantry hook system comprises a sliding rail, a jack, a second steel wire rope and a lifting hook, the jack is provided with a heavy hammer limiting device, the heavy hammer limiting device comprises a U-shaped base, a steel pipe and a fixed support, and the heavy hammer limiting device is installed on a bottom beam of a main trolley through the U-shaped base in the heavy hammer limiting device. A first steel wire rope with a heavy hammer is connected to a travel switch through a guide pipe, a fixed platform is arranged on a gantry hook cross beam under the heavy hammer and used for touching the heavy hammer and triggering limiting action, when the rotary travel switch fails during ascending, the fixed platform touches the heavy hammer, the travel switch acts, and the secondary protection effect is achieved. And meanwhile, the lubricating grease on the second steel wire rope can be effectively prevented from sticking to the steel wire rope of the hoisting heavy punch and the U-shaped seat, so that the travel switch acts in advance or the steel wire rope of the hoisting heavy punch is pulled apart in the running process, the travel switch is damaged, even the U-shaped seat is clamped in a rope groove, and the normal running of the travelling crane is influenced.

Description

Technical Field

[0001] This utility model relates to the field of hoisting technology, and in particular to a counterweight limiting device for a crane gantry hook system. Background Technology

[0002] The counterweight limit device of the gantry hook system is a device used to control the trajectory position of the gantry hook of the traveling crane during its movement, and to prevent damage to the equipment due to machine failure or accidental vibration.

[0003] The device mainly consists of a counterweight and a limit device, connected by springs and other connecting components. The counterweight senses the movement of the gantry crane, while the limit device triggers a stop signal when the counterweight deviates from its designated trajectory. When the gantry crane system is moving normally, the counterweight will deviate from the vertical direction as the equipment moves. When the counterweight deviates to a preset limit position, it will contact the limit device. Once the counterweight contacts the limit device, the limit device will immediately trigger a stop signal. This signal is usually transmitted through an electrical switch, causing the winch power supply to disconnect, thus stopping the crane's lifting or moving motion.

[0004] In existing gantry hook systems, the counterweight limit device triggers a stop signal immediately when the counterweight contacts the limit device. However, the counterweight limit is installed by passing one of the steel wire ropes between the moving and stationary pulleys through the U-shaped ring of the counterweight. In winter, due to the low temperature, the grease on the steel wire rope is highly viscous and often sticks to the steel wire rope and U-shaped ring of the counterweight. This causes the limit switch to activate prematurely or break the steel wire rope of the counterweight during operation, damages the limit switch, or even jams the U-shaped ring in the rope groove, thus affecting the normal operation of the equipment and failing to provide adequate double interlock protection. Utility Model Content

[0005] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a counterweight limit device for a crane gantry hook system. This device solves the problem that the counterweight limit is installed by passing one of the steel wire ropes between the moving pulley and the stationary pulley through the U-shaped ring of the counterweight. In winter, due to the low temperature, the grease on the steel wire rope has a high viscosity and often sticks to the steel wire rope and U-shaped ring of the counterweight. This causes the limit switch to activate prematurely or break the steel wire rope of the counterweight during operation, damages the limit switch, or even jams the U-shaped ring in the rope groove, thus affecting the normal operation of the equipment and failing to provide good double interlock protection.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a gantry hook system counterweight limiting device, including a slide rail, a lifting device, a second wire rope and a hook, wherein the lifting device is equipped with a counterweight limiting device;

[0007] The counterweight limiting device includes a U-shaped base, a steel pipe, and a fixed support. The fixed support is fixedly connected inside the U-shaped base. The upper two sides of the U-shaped base are bolted to two mounting seats on one side of the jack. The steel pipe is fixedly connected inside the lower end of the U-shaped base. Fixed plate grooves are opened on both outer walls of the fixed support. Mounting seat grooves are opened on one outer wall of the fixed support. Mounting seats are slidably connected inside the mounting seat groove.

[0008] The mounting base has guide block grooves on both the upper and lower inner walls, and the two fixed plate grooves have second limit block grooves. A limit switch is installed on the outer wall of the mounting base away from the fixed support. A first steel wire rope is installed inside the steel pipe. The jack is installed on the slide rail. A second steel wire rope is installed inside the jack. The hook is connected to the jack through the second steel wire rope. A fixed platform is fixedly connected to the outer wall of one side of the hook. A counterweight is fixedly connected to the end of the first steel wire rope away from the limit switch.

[0009] Preferably, the end of the steel pipe away from the U-shaped seat extends fixedly to the outside of the U-shaped seat, the outer walls of the upper and lower protrusions of the mounting seat are respectively slidably connected to the interior of the corresponding guide block groove, and the interior of the two second limiting block grooves are connected to the interior of the mounting seat groove;

[0010] The first wire rope is connected to the limit switch via a conduit at one end near the U-shaped seat.

[0011] Preferably, the outer walls on both sides of the mounting base are provided with first limiting block grooves;

[0012] Both of the second limiting block slots have sliding connections to limiting blocks inside.

[0013] Preferably, the ends of both limiting blocks near the first limiting block groove both slide into the interior of the first limiting block groove;

[0014] Both of the fixed plate slots have fixed plates that are slidably connected inside.

[0015] Preferably, the ends of the two limiting blocks furthest from the mounting base are respectively fixedly connected to one side of the outer wall of the corresponding fixing plate;

[0016] Both of the fixing plates are L-shaped.

[0017] Preferably, the two grooves on the outer wall of the left-side fixing plate away from the limit switch are both threaded with fixing bolts;

[0018] The two fixing bolts are threaded at the ends of the two fixing plates near the right fixing plate and extend into the two grooves on the outer wall of the right fixing plate away from the limit switch.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. The counterweight limit device of this gantry hook system is installed on the bottom beam of the main trolley via a U-shaped seat in the counterweight limit device. The first wire rope carrying the counterweight is connected to the limit switch through a conduit. A fixed platform on the gantry hook crossbeam directly below the counterweight is used to touch the counterweight and trigger the limit action. When the lifting is performed, if the rotary limit switch fails, the fixed platform will touch the counterweight, and the limit switch will activate, providing secondary protection. At the same time, it can effectively prevent the grease on the second wire rope from sticking to the wire rope of the counterweight and the U-shaped seat, which would cause the limit switch to activate prematurely or break the wire rope of the counterweight, damage the limit switch, or even jam the U-shaped seat in the rope groove during operation, affecting the normal operation of the gantry. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the external structure of the fixed platform of this utility model;

[0024] Figure 3 This utility model Figure 2 A structural schematic diagram of the enlarged view at point A in the middle;

[0025] Figure 4 This is a schematic diagram of the external structure of the U-shaped seat of this utility model.

[0026] Reference numerals: 1. Slide rail; 2. Lifter; 3. Limit switch; 4. U-shaped seat; 5. Steel pipe; 6. First wire rope; 7. Counterweight; 8. Fixed platform; 9. Hook; 10. Second wire rope; 11. First limit block groove; 12. Mounting seat; 13. Fixing plate; 14. Fixing bolt; 15. Fixing plate groove; 16. Second limit block groove; 17. Guide block groove; 18. Limit block; 19. Mounting seat groove; 20. Fixed support. Detailed Implementation

[0027] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0028] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0030] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0031] Please see Figure 1-4 This utility model provides a technical solution: a counterweight limiting device for a crane gantry hook system, including a slide rail 1, a lifting device 2, a second wire rope 10, and a hook 9;

[0032] The lifting device 2 is equipped with a counterweight limiting device;

[0033] The counterweight limiting device includes a U-shaped base 4, a steel pipe 5, and a fixed support 20. The fixed support 20 is fixedly connected inside the U-shaped base 4. The upper two sides of the U-shaped base 4 are bolted to two mounting seats on one side of the lifting device 2. The steel pipe 5 is fixedly connected to the lower end inside the U-shaped base 4. Fixed plate grooves 15 are provided on both outer walls of the fixed support 20. The end of the steel pipe 5 away from the U-shaped base 4 is fixedly extended to the outside of the U-shaped base 4. A mounting seat groove 19 is provided on one outer wall of the fixed support 20. A mounting seat 12 is slidably connected inside the mounting seat groove 19. Guide block grooves 17 are provided on both the upper and lower inner walls of the mounting seat groove 19. The outer walls of the upper and lower protrusions of the mounting seat 12 are respectively connected to the corresponding guide block grooves 17. The internal sliding connection of 7 is provided. The two fixed plate slots 15 are each provided with a second limit block slot 16. The interior of the two second limit block slots 16 is connected to the interior of the mounting seat slot 19. The outer wall of the mounting seat 12 away from the fixed support 20 is equipped with a limit switch 3. The steel pipe 5 is provided with a first steel wire rope 6. The end of the first steel wire rope 6 near the U-shaped seat 4 is connected to the limit switch 3 through a conduit. The lifting device 2 is installed on the slide rail 1. The second steel wire rope 10 is installed inside the lifting device 2. The hook 9 is connected to the lifting device 2 through the second steel wire rope 10. The outer wall of one side of the hook 9 is fixedly connected with a fixed platform 8. The end of the first steel wire rope 6 away from the limit switch 3 is fixedly connected with a counterweight 7.

[0034] The mounting base 12 has first limiting block grooves 11 on both outer walls. The two second limiting block grooves 16 are slidably connected to limiting blocks 18. The ends of the two limiting blocks 18 near the first limiting block grooves 11 extend slidably into the interior of the first limiting block grooves 11. The two fixing plate grooves 15 are slidably connected to fixing plates 13. The ends of the two limiting blocks 18 away from the mounting base 12 are respectively fixedly connected to the outer wall of the corresponding fixing plate 13 on one side. The two fixing plates 13 are both "L" shaped. The two grooves on the outer wall of the left fixing plate 13 away from the limit switch 3 are threadedly connected to fixing bolts 14. The ends of the two fixing bolts 14 near the right fixing plate 13 extend slidably into the two grooves on the outer wall of the right fixing plate 13 away from the limit switch 3.

[0035] Furthermore, when using this device, it is started by connecting to an external power source. First, the lifting device 2, in conjunction with the second wire rope 10, raises the hook 9 to its limit position. When the hook 9 reaches this limit position, the fixed platform 8 touches the first wire rope 6. Then, the electrical components inside the limit switch 3 receive a signal, which is transmitted to the control circuit, indicating that the crane counterweight has reached the preset limit position. Upon receiving the signal, the control circuit immediately executes a preset action, disconnecting the crane circuit to cut off the crane power. This achieves the effect that when the hook 9 rises, the limit switch 3 malfunctions, and then when the fixed platform 8 touches the first wire rope 6, the limit switch 3 activates, lifting the crane... This provides secondary protection and effectively prevents the grease on the second wire rope 10 from sticking to the wire rope of the suspended weight and the U-shaped seat 4, which could cause the limit switch 3 to activate prematurely or break the wire rope of the suspended weight, damage the limit switch 3, or even jam the U-shaped seat 4 in the rope groove, affecting the normal operation of the crane. Then, when it is necessary to remove the limit switch 3, turn the fixing bolt 14 to rotate it so that its other end is disengaged from the groove on the right side fixing plate 13. Then, pull the fixing plate 13 to remove the limit block 18 from the inside of the first limit block groove 11. Then, pull the limit switch 3 to remove the limit switch 3 and the mounting seat 12 from the fixed support 20.

[0036] The U-shaped seat 4 of the counterweight limit device is installed on the bottom beam of the main trolley. The first wire rope 6 carrying the counterweight 7 is connected to the limit switch 3 through a conduit. A fixed platform 8 is mounted on the gantry hook beam directly below the counterweight 7 to touch the counterweight 7 and trigger the limit action. When the gantry is raised, if the rotary limit switch 3 fails, the fixed platform 8 will touch the counterweight 7, triggering the limit switch 3, which provides secondary protection. At the same time, it can effectively prevent the grease on the second wire rope 10 from sticking to the wire rope of the counterweight and the U-shaped seat 4, causing the limit switch 3 to activate prematurely or break the wire rope of the counterweight during operation, thus preventing damage. Limit switch 3 even jams U-shaped seat 4 in the rope groove, affecting the normal operation of the crane. By turning the fixing bolt 14, its other end is disengaged from the groove opened on the right fixing plate 13. Then, the fixing plate 13 is pulled to remove the limit block 18 from the inside of the first limit block groove 11. Then, the limit switch 3 and the mounting base 12 can be removed from the fixed support 20 by pulling the limit switch 3. This facilitates the disassembly of the limit switch 3, effectively improves the maintenance and repair efficiency of the limit switch 3, and improves the work efficiency of the staff, thereby improving the practicality and flexibility of the equipment.

[0037] Structural Description: Slide rail 1, lifting device 2, second wire rope 10, and hook 9: Slide rail 1 is the rail used to support and guide the lifting device's up and down movement in the gantry hook system. Lifting device 2 is the device used to directly lift items in the gantry hook system. It usually includes a motor, reducer, brake, etc., and is connected to the hook via a wire rope to lift or lower items. The second wire rope 10 plays the role of transmitting power and bearing weight in the gantry hook system. It connects the lifting device and the hook, and the hook moves up and down through the traction of the lifting device. Hook 9 is the component connecting the lifting device 2 and the lifted item, used to hook or fix the item. The material, shape, and size of hook 9 are selected according to the type and weight of the lifted item to ensure the safety of the lifting operation.

[0038] Limit switch 3, counterweight 7, steel pipe 5, first wire rope 6, and fixed platform 8: Limit switch 3 is a key safety component in the counterweight limit device, used to detect and limit the vertical movement range of the counterweight. Counterweight 7 is an important component in the counterweight limit device, its function is to maintain the tension of the wire rope through its own weight. The first wire rope 6 serves to connect the crane and the counterweight in the counterweight limit device. The fixed platform 8 is a mechanical structure used in conjunction with limit switch 3 and counterweight 7. Its function is to contact counterweight 7 and trigger limit switch 3 when counterweight 7 rises to a certain height, thereby stopping or reversing the movement of the crane or crane, preventing the counterweight from rising too high and exceeding the safe working range. Then, one end of the first wire rope 6 is connected to counterweight 7, and the other end is connected to limit switch 3 through a conduit. Thus, when counterweight 7 rises or falls to the set limit position, limit switch 3 will be triggered, thereby cutting off the power supply of the crane gantry hook system to prevent the system from exceeding the safe working range.

[0039] Fixed support 20, mounting base 12, fixed plate 13 and limiting block 18: One side of the limiting block 18 is fixedly connected to the outer wall of one end of the fixed plate 13, and then the other end of the limiting block 18 contacts the inner wall of the first limiting block groove 11, thus limiting the mounting base 12. At the same time, the outer wall of the mounting base 12 is slidably connected to the inside of the mounting base groove 19. Then, the two fixed plates 13 are fixed and limited by the two fixing bolts 14 on the fixed plate 13, thus completing the fixed and limited fixation of the mounting base 12.

[0040] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A heavy hammer limiting device for a travelling gantry hook system, comprising a sliding rail (1), a hoist (2), a second steel wire rope (10) and a hook (9), characterized in that: The weight limiter is arranged on the jack (2); The weight limiter comprises a U-shaped seat (4), a steel pipe (5) and a fixed support (20), the fixed support (20) is fixedly connected in the U-shaped seat (4), the upper end of the U-shaped seat (4) is bolted to the two mounting seats on one side of the jack (2) through bolts, the lower end of the steel pipe (5) is fixedly connected in the U-shaped seat (4), the outer walls of the two sides of the fixed support (20) are both provided with a fixed plate groove (15), and the outer wall of one side of the fixed support (20) is provided with a mounting seat groove (19); the mounting seat (12) is slidably connected in the mounting seat groove (19); The upper and lower inner walls of the mounting seat groove (19) are both provided with a guide block groove (17), the inner walls of the two fixed plate grooves (15) are both provided with a second limiting block groove (16), the outer wall of one side of the mounting seat (12) away from the fixed support (20) is provided with a travel switch (3), the first steel wire rope (6) is arranged in the steel pipe (5), the jack (2) is mounted on the sliding rail (1), the second steel wire rope (10) is mounted in the jack (2), the hook (9) is connected with the jack (2) through the second steel wire rope (10), the outer wall of one side of the hook (9) is fixedly connected with a fixed platform (8), and the end of the first steel wire rope (6) away from the travel switch (3) is fixedly connected with a weight (7).

2. The travelling gantry hook system weight limiter apparatus according to claim 1, wherein: The outer wall of one side of the mounting seat (12) away from the U-shaped seat (4) is fixedly extended to the outside of the U-shaped seat (4), the upper and lower outer walls of the mounting seat (12) are slidably connected with the corresponding guide block grooves (17), and the inner walls of the two second limiting block grooves (16) are communicated with the inner wall of the mounting seat groove (19); The end of the first steel wire rope (6) close to the U-shaped seat (4) is connected with the travel switch (3) through a guide pipe.

3. The trolley block system weight limiting device according to claim 1, characterized in that: The outer walls of the two sides of the mounting seat (12) are both provided with a first limiting block groove (11); The inner walls of the two second limiting block grooves (16) are both slidably connected with limiting blocks (18).

4. The trolley block system weight limiting device according to claim 3, characterized in that: The ends of the two limiting blocks (18) close to the first limiting block groove (11) are slidably extended to the inner wall of the first limiting block groove (11). The inner walls of the two fixed plate grooves (15) are both slidably connected with fixed plates (13).

5. The trolley block system weight limiting device according to claim 3, characterized in that: The ends of the two limiting blocks (18) away from the mounting seat (12) are respectively fixedly connected with the outer walls of one side of the corresponding fixed plates (13). The two fixed plates (13) are both "L"-shaped.

6. The trolley block system weight limiting device according to claim 4, characterized in that: The outer walls of the two grooves of the end of the left fixed plate (13) away from the travel switch (3) are both threadedly connected with fixed bolts (14); The ends of the two fixed bolts (14) close to the right fixed plate (13) are threadedly extended to the inner walls of the two grooves of the end of the right fixed plate (13) away from the travel switch (3).

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