Modularized automatic winding displacement type cable drum device for crane

Abstract

The invention discloses a modularized automatic wire arrangement type cable drum device for a crane, which comprises a cable drum, the cable drum is mounted on one side of a cargo boom, a cable is connected with a boom head connector, supplies power to boom head equipment and transmits signals, and the cable drum can synchronously rotate along with the telescopic action of the cargo boom and winds and unwinds the cable; the cable drum is of a modular structure and is provided with a left supporting flange assembly, a right supporting shell assembly, a drum body, a coil spring assembly, an electric brush assembly, a cable and an automatic winding displacement support assembly. Through the modular design and the coil spring cascade scheme, the problems that in the prior art, the structure is complex, and disassembly, assembly and replacement are inconvenient are solved; by designing the automatic winding displacement bracket, the problems of rope disorder and rope breakage caused by cable winding and stacking in the prior art are solved; by designing a reciprocating screw rod sliding block structure, the problems of multiple components, high cost, large size and heavy weight in the prior art are solved.

Description

Technical Field

[0001] The invention relates to a cable reel, and in particular to a modular automatic wire-arranging cable reel device for a crane. Background Art

[0002] Cables are common components in the engineering field, providing power and transmitting signals to construction machinery. Currently, cables are essential for cranes to power and transmit signals to boom equipment. Cranes have long booms, typically hundreds of meters in length. Retracting, releasing, and storing these long cables is a critical issue, necessitating the use of cable reels. Cable reels allow for both retraction and storage of cables as they rotate in both the forward and reverse directions. Because of the length of the cables, the reels are larger and, to facilitate future maintenance and replacement, are fixed outside the crane boom, hence the name "outboard cable reel."

[0003] An out-of-arm cable reel is an indispensable electrical component for current lifting machinery. Prior art cable reel devices, such as "Cable Reel and Construction Machinery," patent application number 201410233836.6, include a reel housing, a scroll spring, and a planetary reduction mechanism disposed within the reel housing. The planetary reduction mechanism has an input connected to the reel housing and an output connected to the free end of the scroll spring.

[0004] This solution uses a planetary reduction mechanism to reduce the number of spiral springs while ensuring the cable winding length. However, this solution has a complex structure, a low level of modularity, and is extremely inconvenient to disassemble and replace.

[0005] The cable reel device in the prior art is such as the "in-arm cable reel assembly, cable device and crane", application number 201921540542.2; the in-arm cable reel assembly includes a reel body and a protective cover, the protective cover is fixedly connected to the reel body and is sleeved on the circumference of the reel body, and the protective cover is provided with a wire port for entering and exiting the cable, and a scraper is provided at the wire port, which is used to scrape impurities on the cable.

[0006] This solution uses a protective cover structure to protect the cables, but this structure does not take into account the cable rope structure. When the cables are too long, the ropes are prone to entanglement and stacking, resulting in tangled ropes and broken ropes.

[0007] The cable reel device of the prior art, such as "A cable reel capable of automatically arranging cables", application number 202411450043.X, includes a shell, a winding assembly, a cable arrangement assembly, a wire take-up assembly and a cable locking assembly. The winding assembly rotates at the center of the shell, the cable arrangement assembly is arranged on the front side of the shell, the wire take-up assembly is arranged on the cable arrangement assembly, and the cable locking assembly is arranged on the shell.

[0008] This solution uses driving gears in different directions to realize the screw slider mechanism, which can achieve the technical effect of automatic wiring. However, this solution has many components, high cost, large size and heavy weight.

[0009] In summary, existing cable reels often suffer from complex structures, making them difficult to disassemble and replace; cable entanglement and stacking can lead to tangled cables and breakage; and they suffer from numerous components, high costs, large size, and heavy weight. Therefore, it is necessary to develop new cable reel devices that can overcome these issues. Summary of the Invention

[0010] Purpose of the invention: In view of the shortcomings and defects of the existing technology, the present invention provides a modular automatic cable winding drum device for cranes. Through modular design and a cascaded winding spring solution, the problems of complex structure and inconvenient disassembly and replacement in the existing technology are solved; through the design of an automatic cable winding bracket, the problems of cable entanglement and stacking leading to tangled ropes and broken ropes in the existing technology are solved; through the design of a reciprocating screw slider structure, the problems of the existing technology with many components, high cost, large size and heavy weight are solved.

[0011] Technical solution: The present invention provides a modular automatic cable winding drum device for a crane, which is characterized in that it includes a cable reel, which is installed on one side of the boom, and the cable is connected to the boom head connector to supply power to the boom head equipment and transmit signals. The cable reel can rotate synchronously with the telescopic movement of the boom and retract and release the cable; the cable reel adopts a modular structure and is provided with a left support flange assembly, a right support shell assembly, a reel, a coil spring assembly, a brush assembly, a cable and an automatic wire winding bracket assembly.

[0012] Among them, the left supporting flange assembly includes a left drum vertical plate, a left drum cover plate, an oil seal seat, a sealing gasket, an oil seal, a core shaft, a flange, a left bearing and a driving wheel.

[0013] In which, the flange is fixed to the crane arm by bolts, the inner wall of the flange is inserted into the outer wall of the core shaft, and radially arranged set screws fix the two; the shaft seal and the left bearing are both installed on the oil seal seat, the driving wheel of the transmission belt is installed on one side of the oil seal seat, the shaft seal is placed on the outside of the left bearing, and the inner ring of the bearing is installed on the outer diameter of the flange; the left drum vertical plate and the left drum cover plate are respectively placed on both sides of the flange plate to connect the three by a number of bolts, a sealing gasket is provided on the outside of the left drum vertical plate and passes through the fixing bolts to prevent water from entering the cable reel, the center of the left drum cover plate is axially fitted and limited with the outer ring of the left bearing, and the outer wall of the left drum cover plate is fitted and supported with the inner wall of the drum; the side of the left drum vertical plate is fitted and supported with the axial end face of the drum, and the outer side of the fitting part is filled with sealant to prevent rainwater from entering the cable reel; the shaft seal adopts a rotary skeleton oil seal with a dust lip, and the left bearing adopts a deep groove ball bearing.

[0014] Among them, the right support shell assembly includes a right drum cover, a right shell base, a sealing gasket, a right bearing, a brush holder, a right drum vertical plate, a sealing ring, a right shell and a brush fixing rod.

[0015] Among them, the four parts of the right drum cover, the right drum vertical plate, the right shell base and the coil spring cover are connected and relatively fixed by bolts; the sealing gasket arranged between the right drum vertical plate and the right shell base adopts a rubber sealing gasket to prevent rainwater from entering the interior of the cable reel; the outer wall of the right drum cover is in contact with the inner wall of the drum to achieve support, the side edge of the right drum vertical plate is in contact with the axial end face of the drum to support, and the outer side of the contact part is filled with sealant to prevent water from entering the interior of the cable reel; the outer ring of the right bearing is installed in the right shell base, and the center of the right drum cover axially limits the right bearing to prevent the axial movement of the right bearing, and the inner ring of the right bearing is sleeved on the core shaft; the inner ring of the brush holder is sleeved on the core shaft, and a plurality of threaded holes are arranged in the radial direction of the brush holder, and the two are fixedly connected by set screws, the outer ring of the brush stator is sleeved on the brush holder, and a plurality of threaded holes are arranged in the radial direction of the brush holder, and the two are fixedly connected by set screws, and the brush fixing frame is fixed to the brush support rod by bolt connection.

[0016] Among them, the coil spring assembly includes a coil spring, a coil spring cover, a coil spring cover cover plate, a stop sleeve 1, a stop sleeve 2 and a coil spring cover buckle; the coil spring assembly is composed of multiple groups of coil spring-coil spring cover assemblies, and the multiple groups of coil spring-coil spring cover assemblies are connected in series in sequence, the outer ring buckle of the first coil spring is connected to the outer ring buckle of the first coil spring cover, the inner ring buckle of the first coil spring is connected to the inner ring buckle of the second coil spring cover, and so on. The inner ring buckle of the last coil spring is fixedly connected to the stop sleeve 2 buckle, and the stop sleeve 2 is fixedly connected to the core shaft by a set screw; the coil spring cover cover plate is mounted on the core shaft, and the stop sleeve 1 is fixedly connected to the core shaft by a set screw, which is used to limit the coil spring cover cover plate, thereby preventing the coil spring from falling out of the coil spring cover.

[0017] During operation, the outer ring of the first coil spring is driven by the coil spring cover to realize winding and force storage, the inner ring of the first coil spring drives the inner ring of the second coil spring cover and then drives the second coil spring to store force, and so on. The inner ring of the last coil spring is fixed on the second stop sleeve to realize the series force storage of the coil springs; the coil spring assembly adopts a modular design, and each set of coil spring-spring cover components is an integral module component. Different numbers of coil spring-spring cover components can be set according to the cable length, and the coil spring can be replaced to achieve the specific cable tension requirements of the cable reel.

[0018] Wherein, the brush assembly includes a brush stator wire, a brush stator, a brush rotor, a brush rotor wire, a brush through hole and a brush fixing frame; the cable includes an input wire and an output wire.

[0019] The cable in the wire inlet end is connected with the crane arm tail connector, and the wire outlet end is connected with the crane arm head connector through the fast plug connector.

[0020] The automatic wire arranging support assembly comprises a reciprocating screw rod, a screw rod sliding block, a movable guide rod, a baffle, a fixed guide rod, a guide pulley, a transmission driven wheel, a support and a transmission belt. The reciprocating screw rod, the screw rod sliding block, the movable guide rod and the fixed guide rod form a reciprocating screw rod sliding block mechanism.

[0021] Compared with the prior art, the present application has the following advantages: the present application has a modularized structure, and the basic structure can be derived into long-distance and short-distance and multi-signal transmission cable drums; the components are integrated, and convenient to disassemble and maintain; the cable is automatically arranged in order; the modularized design and the spring winding cascade scheme solve the problems of complex structure, inconvenient disassembly and replacement of the prior art; the automatic wire arranging support solves the problems of cable winding and stacking, and the problems of disorder and breakage of the cable; the reciprocating screw rod sliding block structure solves the problems of many components, high cost, large size and heavy weight of the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The present application is a structural schematic diagram.

[0023] Figure 2 It is a structural schematic diagram of the cable reel of the present invention;

[0024] Figure 3 It is a schematic structural diagram of the short-distance cable reel of the present invention;

[0025] Figure 4 It is a structural schematic diagram of the left supporting flange assembly of the present invention;

[0026] Figure 5 It is a structural schematic diagram of the right support housing assembly of the present invention;

[0027] Figure 6 Schematic diagram of the structure of the coil spring assembly of the present invention;

[0028] Figure 7 It is a structural schematic diagram of the brush assembly of the present invention;

[0029] Figure 8 It is a structural schematic diagram of the automatic cable arrangement bracket assembly of the present invention;

[0030] In the figure, 100 is the cable reel; 200 is the crane arm; 300 is the arm head connector; 1 is the left support flange assembly; 11 is the left reel vertical plate; 12 is the left reel cover; 13 is the oil seal seat; 14 is the sealing gasket; 15 is the oil seal; 16 is the core shaft; 17 is the flange; 18 is the left bearing; 19 is the driving wheel; 2 is the right support housing assembly; 21 is the right reel cover; 22 is the right housing base; 23 is the sealing gasket; 24 is the right bearing; 25 is the brush holder; 26 is the right reel vertical plate; 27 is the sealing ring; 28 is the right housing; 29 is the brush fixing rod; 3 is the reel; 4 is the coil spring assembly; 41 is the coil Spring; 42 is the coil spring cover; 43 is the coil spring cover cover; 44 is the stop sleeve 1; 45 is the stop sleeve 2; 46 is the coil spring cover buckle; 5 is the brush assembly; 51 is the brush stator wire; 52 is the brush stator; 53 is the brush rotor; 54 is the brush rotor wire; 55 is the brush through hole; 56 is the brush fixing bracket; 6 is the cable; 61 is the incoming wire; 62 is the outgoing wire; 7 is the automatic cable bracket assembly; 71 is the reciprocating screw; 72 is the screw slider; 73 is the movable guide rod; 74 is the baffle; 75 is the fixed guide rod; 76 is the guide pulley; 77 is the driven pulley; 78 is the bracket; 79 is the transmission belt. DETAILED DESCRIPTION

[0031] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0032] like Figure 1 、 Figure 2 、 Figure 3The modular automatic cable arranging type cable reel device for cranes of the present invention includes a cable reel 100. The cable reel 100 is installed on one side of the boom 200. The cable is connected to the boom head connector 300 to supply power to the boom head equipment and transmit signals. The cable reel 100 can rotate synchronously with the telescopic movement of the boom 200 and retract and release the cable. The cable reel 100 adopts a modular structure and is provided with a left support flange assembly 1, a right support shell assembly 2, a reel 3, a coil spring assembly 4, a brush assembly 5, a cable 6 and an automatic cable arranging bracket assembly 7. The seven parts are connected to form a modular automatic cable arranging type cable reel device. The seven parts are relatively independent assemblies and can be independently disassembled and replaced. Among the seven parts, the reel 3, the coil spring assembly 4, the brush assembly 5, the automatic cable arranging bracket assembly 7 and the core shaft 16 can be replaced and matched to suit the use conditions of cables of different lengths and different numbers of transmission signals. Through modular combination, long-distance cable reels such as Figure 2 , and short distance cable reels such as Figure 3 The short-distance cable reel is provided with two sets of coil spring 41 - coil spring cover 42 assemblies.

[0033] like Figure 4 The left supporting flange assembly 1 of the present invention includes a left drum vertical plate 11, a left drum cover plate 12, an oil seal seat 13, a sealing gasket 14, an oil seal 15, a core shaft 16, a flange 17, a left bearing 18 and a driving wheel 19. The flange 17 is fixed to the boom 200 by bolts, and the inner wall of the flange 17 is inserted into the outer wall of the core shaft 16. Set screws are arranged radially to fix the two together. The shaft seal 15 and the left bearing 18 are both installed on the oil seal seat 13. The driving wheel 19 of the transmission belt 79 is installed on one side of the oil seal seat 13. The shaft seal 15 is placed on the outside of the left bearing 18, and the inner ring of the bearing is installed on the outer diameter of the flange 17. The left drum vertical plate 11 and the left drum cover plate 12 are respectively placed on both sides of the flange 17 and are fixed together by a number of bolts. A sealing gasket 14 is provided on the outside of the left drum vertical plate 11 and passed through the fixing bolt to prevent water from entering the cable reel 100. The center of the left drum cover 12 is axially fitted with the outer ring of the left bearing 18 to limit the position, and the outer wall of the left drum cover 12 is fitted with the inner wall of the reel 3 for support; the side of the left drum vertical plate 11 is fitted with the axial end face of the reel 3 for support, and the outer side of the fitting part is filled with sealant to prevent rainwater from entering the cable reel 100; the shaft seal 15 adopts a rotary skeleton oil seal with a dust lip, and the left bearing 18 adopts a deep groove ball bearing.

[0034] like Figure 5The right supporting shell assembly 2 of the present invention includes a right drum cover 21, a right shell base 22, a sealing gasket 23, a right bearing 24, a brush holder 25, a right drum vertical plate 26, a sealing ring 27, a right shell 28 and a brush fixing rod 29. The right drum cover 21, the right drum vertical plate 26, the right shell base 22 and the coil spring cover 42 are connected by bolts and relatively fixed; the sealing gasket 23 provided between the right drum vertical plate 26 and the right shell base 22 is a rubber sealing gasket to prevent rainwater from entering the interior of the cable reel 100; the outer wall of the right drum cover 21 fits with the inner wall of the drum 3 to achieve support, the side of the right drum vertical plate 26 fits with the axial end face of the drum 3 to support, and the outer side of the fitting part is filled with sealant to prevent water from entering the interior of the cable reel 100; the outer ring of the right bearing 24 is installed on Inside the right housing base 22, the center of the right reel cover 21 axially limits the right bearing 24 to prevent the right bearing 24 from axial movement. The inner ring of the right bearing 24 is sleeved on the core shaft 16; the inner ring of the brush holder 25 is sleeved on the core shaft 16, and a plurality of threaded holes are provided in the radial direction of the brush holder 25, and the two are fixedly connected by set screws. The outer ring of the brush stator 52 is sleeved on the brush holder 25, and a plurality of threaded holes are provided in the radial direction of the brush holder 25, and the two are fixedly connected by set screws. The brush fixing frame 56 is fixed to the brush support rod 29 by bolt connection.

[0035] like Figure 6 The coil spring assembly 4 of the present invention includes a coil spring 41, a coil spring cover 42, a coil spring cover cover plate 43, a stop sleeve 1 44, a stop sleeve 2 45 and a coil spring cover buckle 46; the coil spring assembly 4 is composed of multiple groups of coil spring 41-coil spring cover 42 components, and the multiple groups of coil spring 41-coil spring cover 42 components are connected in series in sequence, the outer ring buckle of the first coil spring 41 is connected to the outer ring buckle 46 of the first coil spring cover, the inner ring buckle of the first coil spring 41 is connected to the inner ring buckle of the second coil spring cover 42, and so on. The inner ring buckle of the last coil spring 41 is fixedly connected with the stop sleeve 2 45 by a tightening screw, and the stop sleeve 2 45 is fixedly connected to the core shaft 16 by a tightening screw; the coil spring cover cover plate 43 is sleeved on the core shaft 16, and the stop sleeve 1 44 is fixedly connected to the core shaft 16 by a tightening screw, which is used to limit the coil spring cover cover plate 43, thereby preventing the coil spring 41 from falling out of the coil spring cover 42. During operation, the outer ring of the first coil spring 41 is driven by the coil spring cover 42 of the reel 3 to realize winding and force storage, and the inner ring of the first coil spring 41 drives the inner ring of the second coil spring cover 42 and then drives the second coil spring 41 to store force, and so on. The inner ring of the last coil spring 41 is fixed on the second stop sleeve 44 to realize the series force storage of the coil springs; the coil spring assembly 4 adopts a modular design, and each group of coil spring 41-coil spring cover 42 components is an integral module component. Different numbers of coil springs 41-coil spring cover 42 components can be set according to the cable length, and the coil spring 41 can be replaced to achieve the specific cable tension requirements of the cable reel.

[0036] like Figure 7The brush assembly 5 of the present invention includes a brush stator wire 51, a brush stator 52, a brush rotor 53, a brush rotor wire 54, a brush via 55, and a brush holder 56. The cable 6 includes an input wire 61 and an output wire 62. The brush assembly 5 is highly integrated and integrally packaged, making it dustproof and waterproof. One end of the incoming line 61 of the cable 6 is connected to the crane boom tail connector, and the other end is quickly connected to the brush stator wire 51 through the internal cavity of the core shaft 16; the outgoing line 62 of the cable 6 is the cable wound on the cable reel, one end of which is quickly connected to the brush rotor wire 54 through a quick connector, and is wound around the reel 3 through the outlet on the right shell base 22. The other end of the outgoing line 62 is connected to the crane boom head connector 300 to supply power to the crane boom head equipment and transmit signals; the brush stator 52 is provided with a plurality of limiting holes and is fixedly connected to the brush holder 25 by tightening screws; a brush fixing frame 56 is provided on the top of the brush rotor 53, and a brush support rod 29 is provided between the brush fixing frame 56 and the right shell base 22 for supporting the brush assembly 5 so that the brush rotor 53 rotates with the reel 3. The brush assembly components are highly integrated, easy to replace, and have good waterproof performance. The joints between the incoming wire 61 and the outgoing wire 62 in the wire harness 6 and the cable reel 100 are all sealed to prevent rainwater from entering the interior of the cable reel 100 through the incoming wire 61 and the outgoing wire 62.

[0037] like Figure 8 The automatic cable arrangement bracket assembly 7 of the present invention includes a reciprocating screw 71, a screw slider 72, a movable guide rod 73, a baffle 74, a fixed guide rod 75, a guide pulley 76, a transmission driven wheel 77, a bracket 78 and a transmission belt 79; the bracket 78 is fixed to the outside of the flange 17 and is stationary relative to the boom; the fixed guide rod 75 is fixed to the bracket 78 by a nut, and guides the screw slider 72. The baffle 74 is fixed to the fixed guide rod 75, and the bearing on the baffle 74 supports and limits the reciprocating screw 71; the reciprocating screw 71, the screw slider 72, the movable guide rod 73, and the fixed guide rod 75 constitute a reciprocating screw slider mechanism. The reciprocating screw 71 has a double When the reciprocating screw rod 71 rotates forwardly, the screw slider 72 can be driven to move to one side along the fixed guide rod 75. When the movable guide rod 73 on the screw slider 72 moves to the end of the bidirectional guide groove, the bidirectional guide groove will change the guide of the movable guide rod 73, thereby driving the screw slider to slide in the opposite direction without changing the direction of the reciprocating screw rod 71; one side of the bidirectional screw rod 71 is connected to the fixed transmission wheel 77 by a pin, and the driving wheel 19 rotates with the reel 3, and the bidirectional screw rod 71 is driven to rotate through the transmission belt 79 and the driven wheel 77; a guide pulley 76 is installed on the screw slider 72, and the outlet end of the cable 6 passes through the inside of the guide pulley 76, which guides the outlet end of the cable 6 and makes the wiring neat.

[0038] During operation, flange 17 of the left support flange assembly 1 is bolted to the first boom section 200 of the crane. One end of the incoming cable 61 of the cable 6 is connected to the boom tail connector, while the other end of the outgoing cable 62 is connected to the boom head connector 300, supplying power and transmitting signals to the boom head equipment. When the cable reel is not in operation, the crane's telescopic boom is not extended, and the outgoing cable 62, i.e., the cable, is wound in multiple layers around the reel 3. When the crane is operating, i.e., when the telescopic boom is extended, the boom 200 pulls the outgoing cable 62, or the cable, from the drum 3, simultaneously driving the drum 3 to rotate about the core shaft 16 and the coil spring cover 42. The outer ring of the first coil spring 41 is driven by the coil spring cover 42 to rotate, thereby winding and storing force. The inner ring of the first coil spring 41 drives the second coil spring cover 42, which in turn drives the second coil spring 41 to store force. Similarly, the inner ring of the last coil spring 41 is fixed to the second stop sleeve 45, thereby storing force in series. Multiple groups of coil springs are all under tension, ensuring that the outgoing cable 62, or the cable, is always under tension when it is pulled out, ensuring that the outgoing cable 62, or the cable, is uniformly stretched. The rotation of the drum 3 simultaneously drives the right housing base 22, which in turn drives the brush rotor 53 to rotate. The brush rotor 53 rotates relative to the brush stator 52. The rotation of the brush rotor 53 relative to the brush stator 52 in the brush assembly 5 enables power and signal transmission. The brush stator 52 is fixedly connected to the brush holder 25. The quick-connect connector of the brush stator wire 51 is fixedly connected to the incoming wire 61. The brush holder 25 is fixedly connected to the core shaft 16, and the core shaft 16 is fixedly connected to the flange 17. Therefore, the brush stator 52, the incoming wire 61, the brush holder 25, the core shaft 16, and the flange 17 are all in a relatively static state. When the crane boom is retracted, the torsional spring force of the coil spring 41 drives the reel 3 to rotate in the opposite direction. The reel 3 rotates in the same direction as the drive wheel 19. The drive wheel 19 drives the driven wheel 77 and the reciprocating screw 71 to rotate synchronously via the transmission belt 79, causing the screw slider 72 to slide back and forth on the fixed guide rail 75. The guide pulley 76 winds the outgoing wire 62 neatly and multi-layered around the reel 3.

[0039] The main innovative features of the present invention are as follows:

[0040] 1. The device consists of seven components: a left support flange assembly 1, a right support housing assembly 2, a drum 3, a coil spring assembly 4, a brush assembly 5, a cable 6, and an automatic cable traversing bracket 7. These components connect to form a modular automatic cable traversing reel device. Each component is a relatively independent assembly and can be disassembled independently for inspection, repair, or replacement. Five of the components—the drum 3, coil spring assembly 4, brush assembly 5, automatic cable traversing bracket assembly 7, and core shaft 16—are interchangeable and adaptable to accommodate different cable lengths and varying amounts of transmitted signals.

[0041] 2、The coil spring assembly 4 is composed of multiple coil spring 41-coil spring cover 42 assemblies, and the multiple coil spring 41-coil spring cover 42 assemblies are connected in series. Each coil spring 41-coil spring cover 42 assembly is used as a module, and different numbers of coil spring 41-coil spring cover 42 assemblies can be set according to the cable length to meet the design requirements of the cable drum of different lengths.

[0042] 3、The reciprocating screw rod 71, the screw block 72, the movable guide rod 73, and the fixed guide rod 75 in the automatic wire arrangement support assembly 7 form a reciprocating screw block mechanism. The reciprocating screw rod 71 has a bidirectional guide groove. When the reciprocating screw rod 71 rotates forward, the screw block 72 can be driven to move to one side along the fixed guide rod 75. When the movable guide rod 73 on the screw block 72 moves to the end of the bidirectional guide groove, the bidirectional guide groove changes the direction of the movable guide rod 73, thereby driving the screw block to slide in the opposite direction without changing the direction of the reciprocating screw rod 71. When the cable drum rotates, the driving wheel 19 rotates with the drum 3, the bidirectional screw rod 71 is driven to rotate through the transmission belt 79 and the driven wheel 77, the screw block guide pulley 76 moves reciprocally with the screw block 72, and the cable 6 is guided to the outlet 62, so that the wires are arranged in order.

[0043] The present application proposes a modular design structure, and the basic structure can derive long-distance and short-distance and multi-signal transmission cable drums; the components are integrated, and the disassembly and maintenance are convenient; the automatic wire arrangement structure design can arrange the wires in order. Through the modular design and the coil spring cascade scheme, the problems of complex structure, inconvenient disassembly and replacement of the prior art are solved; through the design of the automatic wire arrangement support, the problems of cable winding and stacking, which leads to disordered wires and broken wires, are solved; through the design of the reciprocating screw rod and block structure, the problems of many components, high cost, large size, and heavy weight of the prior art are solved.

Claims

1. A modular automatic cable reel device for cranes, characterized by: The invention comprises a cable reel (100), which is installed on one side of a lifting arm (200). The cable is connected to an arm head connector (300) to supply power to the arm head equipment and transmit signals. The cable reel (100) can rotate synchronously with the extension and retraction of the lifting arm (200) and retract and release the cable. The cable reel (100) adopts a modular structure and is provided with a left support flange assembly (1), a right support shell assembly (2), a reel (3), a coil spring assembly (4), a brush assembly (5), a cable (6) and an automatic cable arrangement bracket assembly (7).

2. The modular automatic cable reel device for cranes according to claim 1, characterized in that: The left supporting flange assembly (1) comprises a left reel vertical plate (11), a left reel cover plate (12), an oil seal seat (13), a sealing gasket (14), an oil seal (15), a core shaft (16), a flange (17), a left bearing (18) and a driving wheel (19).

3. The modular automatic cable reel device for cranes according to claim 2, characterized in that: The flange (17) is fixed to the boom (200) by bolts, and the inner wall of the flange (17) is inserted into the outer wall of the core shaft (16), and radially arranged set screws are used to fix the two. The shaft seal (15) and the left bearing (18) are both installed on the oil seal seat (13), and the driving wheel (19) of the transmission belt (79) is installed on one side of the oil seal seat (13). The shaft seal (15) is placed on the outside of the left bearing (18), and the inner ring of the bearing is installed on the outer diameter of the flange (17); the left drum vertical plate (11) and the left drum cover plate (12) are respectively placed on both sides of the flange (17) and screwed together by a number of screws. The bolts connect the three together, a sealing gasket (14) is provided on the outside of the left drum vertical plate (11) and is passed through the fixing bolt to prevent water from entering the cable drum (100), the center of the left drum cover (12) is axially fitted with the outer ring of the left bearing (18) to limit the position, and the outer wall of the left drum cover (12) is fitted with the inner wall of the drum (3) for support; the side of the left drum vertical plate (11) is fitted with the axial end face of the drum (3) for support, and the outer side of the fitting part is filled with sealant to prevent rainwater from entering the cable drum (100); the shaft seal (15) adopts a rotary skeleton oil seal with a dust lip, and the left bearing (18) adopts a deep groove ball bearing.

4. The modular automatic cable reel device for cranes according to claim 1, characterized in that: The right supporting housing assembly (2) comprises a right reel cover (21), a right housing base (22), a sealing gasket (23), a right bearing (24), a brush holder (25), a right reel vertical plate (26), a sealing ring (27), a right housing (28) and a brush fixing rod (29).

5. The modular automatic cable reel device for cranes according to claim 4, characterized in that: The four parts of the right drum cover (21), the right drum vertical plate (26), the right shell base (22) and the coil spring cover (42) are connected by bolts and fixed relatively; the sealing gasket (23) provided between the right drum vertical plate (26) and the right shell base (22) adopts a rubber sealing gasket to prevent rainwater from entering the interior of the cable drum (100); the outer wall of the right drum cover (21) is fitted with the inner wall of the drum (3) to achieve support, the side of the right drum vertical plate (26) is fitted with the axial end face of the drum (3) for support, and the outer side of the fitting part is filled with sealant to prevent water from entering the interior of the cable drum (100); the outer ring of the right bearing (24) The brush stator (52) is mounted in the right housing base (22), and the center of the right reel cover (21) axially limits the right bearing (24) to prevent the right bearing (24) from axially moving. The inner ring of the right bearing (24) is sleeved on the core shaft (16); the inner ring of the brush holder (25) is sleeved on the core shaft (16), and a plurality of threaded holes are provided in the radial direction of the brush holder (25). The two are fixedly connected by set screws. The outer ring of the brush stator (52) is sleeved on the brush holder (25), and a plurality of threaded holes are provided in the radial direction of the brush holder (25). The two are fixedly connected by set screws. The brush fixing frame (56) is fixed on the brush support rod (29) by bolt connection.

6. The modular automatic cable reel device for cranes according to claim 1, characterized in that: The coil spring assembly (4) includes a coil spring (41), a coil spring cover (42), a coil spring cover cover plate (43), a stop shaft sleeve (44), a stop shaft sleeve (45) and a coil spring cover buckle (46); the coil spring assembly (4) is composed of multiple groups of coil spring (41)-coil spring cover (42) components, and the multiple groups of coil spring (41)-coil spring cover (42) components are connected in series in sequence, the outer ring buckle of the first coil spring (41) is connected to the outer ring buckle (46) of the first coil spring cover, and the inner ring of the first coil spring (41) is connected to the outer ring buckle (46) of the first coil spring The buckle is connected to the inner ring buckle of the second coil spring cover (42), and the inner ring buckle of the last coil spring (41) is fixedly connected to the second stop sleeve (45) by analogy. The second stop sleeve (45) is fixedly connected to the core shaft (16) by a set screw; the coil spring cover plate (43) is sleeved on the core shaft (16), and the stop sleeve (44) is fixedly connected to the core shaft (16) by a set screw, which is used to limit the coil spring cover plate (43) to prevent the coil spring (41) from falling out of the coil spring cover (42).

7. The modular automatic cable reel device for cranes according to claim 6, characterized in that: During operation, the outer ring of the first coil spring (41) is driven by the reel (3) to drive the coil spring cover (42) to realize winding and force storage, and the inner ring of the first coil spring (41) drives the inner ring of the second coil spring cover (42) and then drives the second coil spring (41) to store force, and so on. The inner ring of the last coil spring (41) is fixed on the second stop sleeve (44) to realize the coil spring series force storage; the coil spring assembly (4) adopts a modular design, and each group of coil spring (41)-coil spring cover (42) components is an integral module component. Different numbers of coil spring (41)-coil spring cover (42) components can be set according to the length of the cable, and the coil spring (41) can be replaced to achieve the specific cable tension requirement of the cable reel.

8. The modular automatic cable reel device for cranes according to claim 1, characterized in that: The brush assembly (5) includes a brush stator wire (51), a brush stator (52), a brush rotor (53), a brush rotor wire (54), a brush through hole (55) and a brush fixing frame (56); the cable (6) includes an incoming wire (61) and an outgoing wire (62).

9. The modular automatic cable reel device for cranes according to claim 8, characterized in that: One end of the inlet wire (61) of the cable (6) is connected to the crane arm tail connector, and the other end is connected to the brush stator wire (51) through the internal cavity of the core shaft (16); the outlet wire (62) of the cable (6) is a cable wound on the cable drum, one end of which is connected to the brush rotor wire (54) through the quick plug connector, and is wound on the drum (3) through the outlet port on the right shell base (22). The other end of the outlet wire (62) is connected to the crane arm head connector (300) to supply power to the crane arm head equipment and transmit signals; the brush stator (52) is provided with a plurality of limiting holes, and is fixedly connected to the brush holder (25) by means of set screws; a brush fixing frame (56) is provided on the top of the brush rotor (53), and a brush support rod (29) is provided between the brush fixing frame (56) and the right shell base (22) for supporting the brush assembly (5) so that the brush rotor (53) rotates with the reel (3); the joints between the incoming wire (61), the outgoing wire (62) and the cable reel (100) in the wiring harness (6) are all sealed to prevent rainwater from entering the interior of the cable reel (100) through the incoming wire (61) and the outgoing wire (62).

10. The modular automatic cable reel device for cranes according to claim 1, characterized in that: The automatic cable arrangement bracket assembly (7) includes a reciprocating screw (71), a screw slider (72), a movable guide rod (73), a baffle (74), a fixed guide rod (75), a guide pulley (76), a transmission driven wheel (77), a bracket (78) and a transmission belt (79); the bracket (78) is fixed to the outside of the flange (17) and is stationary relative to the boom; the fixed guide rod (75) is fixed to the bracket (78) by a nut, and guides the screw slider (72); the baffle (74) is fixed to the fixed guide rod (75), and the bearing on the baffle (74) supports and limits the reciprocating screw (71); the reciprocating screw (71), the screw slider (72), the movable guide rod (73) and the fixed guide rod (75) form a reciprocating screw slider mechanism. 1) It has a bidirectional guide groove. When the reciprocating screw rod (71) rotates in the forward direction, it can drive the screw slider (72) to move to one side along the fixed guide rod (75). When the movable guide rod (73) on the screw slider (72) moves to the end of the bidirectional guide groove, the bidirectional guide groove will change the guide of the movable guide rod (73), thereby driving the screw slider to slide in the opposite direction without changing the direction of the reciprocating screw rod (71); one side of the bidirectional screw rod (71) is connected to the fixed transmission wheel (77) through a pin, and the driving wheel (19) rotates with the reel (3), and drives the bidirectional screw rod (71) to rotate through the transmission belt (79) and the driven wheel (77); a guide pulley (76) is installed on the screw slider (72), and the outlet end of the cable (6) passes through the inside of the guide pulley (76), which guides the outlet end of the cable (6) and makes the cable arrangement neat.

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