Modular high-integration arm outer cable drum device for crane

Abstract

The application discloses a modular high-integration arm outer cable drum device for a crane, a left supporting flange assembly (1) is rotationally connected with a right supporting shell assembly (2), one end of the left supporting flange assembly (1) is fixedly connected with a drum (3), the other end of the right supporting shell assembly (2) is fixedly connected with the drum (3), and the drum (3) is sleeved and fixedly connected with a winding spring assembly (4); wherein a brush assembly (5) comprises a brush stator (5-1) and a brush rotor (5-2), the brush stator (5-1) is fixedly connected with the right supporting shell assembly (2), the brush rotor (5-2) is sleeved and rotationally connected with the brush stator (5-1), and one end of the brush rotor (5-2) is fixedly connected with the right supporting shell assembly (2). An incoming line (6-1) is connected with the brush stator (5-1) after penetrating through the left supporting flange assembly (1), and the other end of the brush rotor (5-2) is electrically connected with an outgoing line (6-2). The application is composed of six relatively independent assemblies and can be independently disassembled, inspected, maintained or replaced.

Description

TECHNICAL FIELD

[0001] The present application relates to a modular high-integration arm outer cable drum device for cranes, and belongs to the technical field of a modular high-integration arm outer cable drum device for cranes. BACKGROUND

[0002] Cables are commonly used components in the engineering field, which can provide power for engineering equipment. At present, cables are essential when cranes need to transmit power and signals to the head of the crane boom. The crane boom is relatively long, generally 100 meters, so the winding and storage of the relatively long cable is a problem that must be solved, and therefore a cable drum is needed to wind and store the cable. The cable can be unwound and retracted by forward and reverse rotation of the drum. Because the cable is thick and long, the cable drum is relatively large in size, and is placed and fixed on the outside of the crane boom for easy maintenance and replacement in the later period, so it is called an arm outer cable drum.

[0003] As an indispensable electrical component of current hoisting machinery, the current arm outer cable drum has the following problems: 1. The arm outer cable drum is expensive; 2. The planetary mechanism and slip ring structure are complex; 3. The brush assembly is low in modularization level; 4. The current sealing structure and brush structure are prone to water rust, resulting in high failure rate; 5. The current brush structure has many wire harnesses and is arranged in disorder, making disassembly and maintenance inconvenient after failure. SUMMARY

[0004] The technical problem to be solved by the present application is to overcome the defects of the prior art, such as the current arm outer cable drum being expensive, the planetary mechanism and slip ring structure being complex, the wire harnesses being numerous and arranged in disorder, the brush assembly being low in modularization level, the current sealing structure and brush structure being prone to water rust, resulting in high failure rate, and the current brush structure having many wire harnesses and being arranged in disorder, making disassembly and maintenance inconvenient after failure, and to provide an arm outer cable drum with modularized structure design, component integration, good sealing performance, convenient disassembly and maintenance, and high reliability for signal transmission at the head of a crane. The manufacturing cost is lower, the reliability of the cable drum is improved, and the installation and maintenance are convenient, with waterproof and shockproof functions.

[0005] Preferably, the present application provides a modular high-integration arm outer cable drum device for cranes, comprising a left support flange assembly, a right support shell assembly, a drum, a coil spring assembly, a brush assembly and a wire harness. The left support flange assembly is rotationally connected to the right support shell assembly, one end of the left support flange assembly is fixedly connected to one end of the drum, the other end of the drum is fixedly connected to the right support shell assembly, and the drum is sleeved and fixedly connected to the coil spring assembly. The brush assembly comprises a brush stator and a brush rotor. The brush stator is fixedly connected to the right support shell assembly, the brush rotor is sleeved and rotationally connected to the brush stator, and one end of the brush rotor is fixedly connected to the right support shell assembly.

[0006] Preferably, the wire harness includes an incoming wire and an outgoing wire, the incoming wire is connected to the brush stator after passing through the left support flange assembly, and the outgoing wire is electrically connected to the other end of the brush rotor.

[0007] Preferably, the left support flange assembly includes a left drum vertical plate, a left drum cover plate, an oil seal seat, a mandrel, a flange plate, and a left bearing, the left drum vertical plate and the left drum cover plate are respectively located on both sides of the flange plate, the left drum vertical plate is fixedly connected to the flange plate, the left drum cover plate is fixedly connected to the flange plate, a left bearing through hole that matches the left bearing is formed at the center of the left drum cover plate, the left bearing through hole is axially attached to the outer ring of the left bearing to achieve limiting, and the outer wall of the left drum cover plate is attached to the inner wall of the drum; the side edge of the left drum vertical plate is attached to the axial end face of the drum, and the mandrel is sleeved and fixedly connected with the flange plate.

[0008] Preferably, the left support flange assembly includes a plurality of sealing washers and an oil seal, the sealing washers are arranged on the outer side of the left drum vertical plate, the left drum vertical plate is fixedly connected to the flange plate through a fixed bolt, the left drum cover plate is fixedly connected to the flange plate through a fixed bolt, the sealing washers are arranged on the inner side of the fixed bolt, and the oil seal is arranged at the connection between the oil seal seat and the flange plate.

[0009] Preferably, the right support shell assembly includes a right drum cover plate, a right wire harness shell, a right bearing, a brush holder, a support rod, and a right drum vertical plate,

[0010] The right drum cover plate, the right drum vertical plate, the sealing washer, and the right wire harness shell are connected through bolts, the outer wall of the right drum cover plate is attached to the inner wall of the drum to achieve support; the side edge of the right drum cover plate is sealingly attached to the axial end face of the drum to achieve support, the outer ring of the right bearing is installed on the inner side of the right wire harness shell; the inner ring of the right bearing is sleeved on the mandrel, the inner ring of the brush holder is sleeved on the mandrel, a plurality of threaded holes are radially arranged on the brush holder, the brush holder is fixedly connected to the mandrel through a set screw; a plurality of holes are arranged on the end face of the brush holder, a plurality of limiting rods are arranged on the brush stator, the holes and the limiting rods are inserted and connected to achieve circumferential limiting, and a plurality of support rods are arranged between the brush assembly and the right wire harness shell.

[0011] Preferably, the right support shell assembly includes a sealing washer, a sealing ring, and a wire harness cover, the sealing washer is arranged between the right drum vertical plate and the right wire harness shell, the right wire harness shell and the wire harness cover are fixedly connected, and the sealing ring is arranged between the right wire harness shell and the wire harness cover.

[0012] Preferably, the coil spring assembly comprises N coil springs, a coil spring cover, a coil spring cover cover plate, a first stop shaft sleeve and a second stop shaft sleeve, the coil spring cover is sleeved on the right bearing, the coil spring cover, the right coil drum cover plate, the right coil drum vertical plate, the sealing gasket and the right wire harness shell are fixedly connected, the n-th coil spring outer ring buckle is connected with the n-th coil spring cover outer ring buckle, the n-th coil spring inner ring buckle is connected with the n+1-th coil spring cover inner ring buckle, 1≤n≤N, the N-th coil spring inner ring buckle is fixedly connected with the second stop shaft sleeve buckle, and the first stop shaft sleeve and the second stop shaft sleeve are fixedly connected with the mandrel respectively; the coil spring cover cover plate is sleeved on the mandrel to limit the coil spring and prevent the coil spring from falling out of the coil spring cover.

[0013] During work, the first coil spring outer ring is driven by the winding drum to drive the coil spring cover to realize winding and energy storage, the n-th coil spring inner ring drives the n+1-th coil spring cover inner ring to rotate and further drives the n+1-th coil spring to store energy, and the coil springs are connected in series to store energy.

[0014] Preferably, the left coil drum vertical plate side edge and the axial end face of the winding drum are filled with sealing glue at the abutting position to prevent rainwater from entering the inside of the winding drum.

[0015] Preferably, the winding drum comprises a protective cover and a wire guide plate, the protective cover is arranged outside the winding drum, bolt holes are formed in the protective cover, the protective cover and the wire guide plate are detachably fixedly connected through the bolt holes, and reinforcing ribs are additionally arranged inside the protective cover to improve the strength of the protective cover.

[0016] The present application has the following beneficial effects:

[0017] The present application provides a modular structure design, component integration, good sealing performance, convenient disassembly and maintenance, and high reliability of the arm outer cable winding drum, which comprises a left support flange assembly, a right support shell assembly, a winding drum, a coil spring assembly, a brush assembly and a wire harness, and the six parts are relatively independent assemblies and can be independently disassembled, inspected, maintained or replaced. The winding drum, the coil spring assembly, the brush assembly and the mandrel can be replaced and matched to be suitable for different lengths of cables and different numbers of transmission signals. The left support flange assembly is rotatably connected to the right support shell assembly, one end of the left support flange assembly is fixedly connected to the winding drum, the other end of the winding drum is fixedly connected to the right support shell assembly, and the winding drum is sleeved and fixedly connected to the coil spring assembly. The brush assembly comprises a brush stator and a brush rotor, the brush stator is fixedly connected to the right support shell assembly, the brush rotor is sleeved and rotatably connected to the brush stator, and one end of the brush rotor is fixedly connected to the right support shell assembly. The present application has the advantages of lower manufacturing cost, improved reliability of the cable winding drum, convenient installation and maintenance, waterproof and shockproof functions.

[0018] In the present application, the coil spring assembly adopts modular design, each group of coil springs and a coil spring cover assembly are regarded as a whole module assembly, different numbers of coil spring-coil spring cover assemblies can be arranged according to the length of the cable, and the coil springs can be replaced to meet the specific cable tension requirement of the cable winding drum.

[0019] The center of the left drum cover plate is in axial abutment with the outer ring of the left bearing to limit, the outer wall of the left drum cover plate is in abutment with the inner wall of the drum to support the drum, the side edge of the left drum vertical plate is in abutment with the axial end surface of the drum to support, the outside of the abutment part is filled with sealant to prevent rainwater from entering the inside of the cable drum. The inside of the protective cover is additionally provided with a reinforcing rib for improving the strength of the protective cover and preventing the cable from running out of the drum; preventing rain, snow and frost from eroding the cable, preventing water from entering the inside of the cable drum, causing short circuit failure of the electrical device. The sealing gasket between the right drum vertical plate of the right support shell assembly and the right wire harness shell can be a rubber sealing gasket to prevent rainwater from entering the inside of the cable drum. The outer wall of the right drum cover plate is in abutment with the inner wall of the drum to support; the side edge of the right drum cover plate is in abutment with the axial end surface of the drum to support the drum, the outside of the abutment part is filled with sealant to prevent water from entering the inside of the cable drum. The outer ring of the right bearing is installed in the right wire harness shell, and the center of the coil spring cover axially limits the right bearing; preventing the right bearing from moving axially. The hole and the limiting rod realize insertion connection and axial limitation.

[0020] The brush assembly is highly integrated and integrally packaged, dustproof and waterproof, the brush rotor is provided with a second quick plug connector, and the outgoing wire of the wire harness realizes quick plug connection. The hole and the limiting rod realize insertion connection and axial limitation, the incoming wire and the outgoing wire of the wire harness are provided with seals in cooperation with the cable drum, to prevent rainwater from entering the inside of the cable drum through the incoming wire and the outgoing wire. The coil spring assembly adopts modular design, each group of coil springs and a coil spring cover assembly are taken as a whole module assembly, different numbers of coil spring-coil spring cover assemblies can be set according to the length of the cable, and the coil springs can be replaced to realize the specific cable tension requirement of the cable drum. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0022] FIG. 1 is a structural schematic diagram of a long-distance cable drum device in the present application; Figure 1 FIG. 2 is a structural schematic diagram of a left support flange assembly in the present application;

[0023] FIG. 3 is a structural schematic diagram of a right support shell assembly in the present application; Figure 2 FIG. 4 is a structural schematic diagram of a coil spring assembly in the present application;

[0024] Figure 3 FIG. 5 is a structural schematic diagram of a brush holder in the present application;

[0025] FIG. 6 is a structural schematic diagram of a brush rotor in the present application; Figure 4 FIG. 7 is a structural schematic diagram of a brush assembly in the present application;

[0026] Figure 5 FIG. 8 is a structural schematic diagram of a brush assembly in the present application; ​​

[0027] Figure 1 is a schematic diagram of the brush assembly structure in the present application; Figure 6 Figure 1 is a schematic diagram of the brush assembly structure in the present application;

[0028] Figure 1 is a schematic diagram of the brush assembly structure in the present application; Figure 7 Figure 1 is a schematic diagram of the brush assembly structure in the present application;

[0029] Figure 1 is a schematic diagram of the brush assembly structure in the present application; Figure 8 Figure 1 is a schematic diagram of the brush assembly structure in the present application;

[0030] Figure 1 is a schematic diagram of the brush assembly structure in the present application; Figure 9 Figure 1 is a schematic diagram of the brush assembly structure in the present application;

[0031] Figure 1 is a schematic diagram of the brush assembly structure in the present application; 1-1 is a left cylinder stand plate; 1-2 is a left cylinder cover plate; 1-3 is an oil seal seat; 1-4 is a sealing washer; 1-5 is an oil seal; 1-6 is a mandrel; 1-7 is a flange plate; 1-8 is a left bearing; 1-9 is a protective cover; 1-10 is a wire guide plate; 1-9-1 is a reinforcing rib; 1-9-2 is a bolt hole; 2 is a right support shell assembly; 2-1 is a right cylinder cover plate; 2-2 is a right wire harness shell; 2-3 is a sealing washer; 2-4 is a right bearing; 2-5 is a brush holder; 2-6 is a support rod; 2-7 is a sealing ring; 2-8 is a wire harness cover; 2-9 is a right cylinder stand plate; 2-5-1 is a threaded hole; 2-5-2 is a hole; 3 is a cylinder; 4 is a coil spring assembly; 4-1 is a coil spring; 4-2 is a coil spring cover; 4-3 is a coil spring cover cover plate; 4-4 is a first stop shaft sleeve; 4-5 is a second stop shaft sleeve; 5 is a brush assembly; 5-1 is a brush stator; 5-2 is a brush rotor; 5-1-1 is a first quick connector; 5-1-2 is a second quick connector; 5-2-1 is a third quick connector; 5-2-2 is a mounting hole; 6 is a wire harness; 6-1 is an incoming wire; 6-2 is an outgoing wire. DETAILED DESCRIPTION

[0032] If the description in the present application involves "first" and "second" and the like, it is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implying the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the present application.

[0033] Referring to Figure 1 The present application proposes a modular high-integration arm external cable drum device, such as Figure 1, including left support flange assembly 1, right support shell assembly 2, drum 3, spring assembly 4, brush assembly 5, wire harness 6 a total of six parts. Left support flange assembly 1 includes: left drum vertical plate 1-1, left drum cover plate 1-2, oil seal seat 1-3, sealing washer 1-4, oil seal 1-5, mandrel 1-6, flange 1-7, left bearing 1-8, shield 1-9, wire guide plate 1-10. Right support shell assembly 2 includes: right drum cover plate 2-1, right wire harness shell 2-2, sealing washer 2-3, right bearing 2-4, brush holder 2-5, support rod 2-6, sealing ring 2-7, wire harness cover 2-8, right drum vertical plate 2-9. Spring assembly 4 includes: spring 4-1, spring cover 4-2, spring cover cover plate 4-3, first stop shaft sleeve 4-4, second stop shaft sleeve 4-5. Brush assembly 5 includes: brush stator 5-1, brush rotor 5-2. Wire harness 6 includes incoming line 6-1, outgoing line 6-2.

[0034] As Figure 2 , the flange 1-7 in the left support flange assembly 1 is fixed on the crane arm by bolts, the inner wall of the flange 1-7 is insertedly connected with the outer wall of the mandrel 1-6, and the radial tight screw is arranged to fixedly connect the two; the oil seal 1-5 and the left bearing 1-8 are both installed on the oil seal seat 1-3, the shaft seal 1-5 is arranged outside the left bearing 1-8, and the bearing inner ring is installed on the outer diameter of the flange 1-7. The left drum vertical plate 1-1 and the left drum cover plate 1-2 are respectively placed on both sides of the flange 1-7 and are fixedly connected by a plurality of bolts, the sealing washer 1-4 is arranged on the outside of the left drum vertical plate 1-1, the sealing washer 1-4 is arranged inside the fixing bolt, so as to prevent water from entering the inside of the cable drum, the center of the left drum cover plate 1-2 is axially attached to the outer ring of the left bearing 1-8 to limit, and the outer wall of the left drum cover plate 1-2 is attached to the inner wall of the drum 3 to support. The side edge of the left drum vertical plate 1-1 is attached to the axial end face of the drum 3 to support, the outside of the attached part is filled with sealing glue, so as to prevent rainwater from entering the inside of the cable drum. The oil seal 1-5 can adopt a dustproof rotary skeleton oil seal, and the left bearing 1-8 can adopt a deep groove ball bearing. Figure 7 The cable drum is provided with a protective cover 1-9, the protective cover 1-9 is semicircular, and the protective cover 1-9 can be made of plastic material or metal material. The protective cover 1-9 and the wire guide plate 1-10 are detachably fixedly connected through the bolt hole 1-9-2, the protective cover 1-9 is additionally provided with a reinforcing rib 1-9-1 inside, which is used for improving the strength of the protective cover and preventing the cable from running out of the drum; preventing rain, snow and frost from eroding the cable, preventing water from entering the inside of the cable drum, and causing short circuit failure of the electrical device.

[0035] As Figure 3, the right support shell assembly 2, the coil spring cover 4-2, the right winding drum cover plate 2-1, the right winding drum vertical plate 2-9, the sealing gasket 2-3, and the right wire harness shell 2-2 are connected by bolts, and the four are relatively fixed. The sealing gasket 2-3 arranged between the right winding drum vertical plate 2-9 of the right support shell assembly 2 and the right wire harness shell 2-2 can be a rubber sealing gasket to prevent rainwater from entering the inside of the cable drum. The outer wall of the right winding drum cover plate 2-1 is attached to the inner wall of the winding drum 3 to achieve support; the side edge of the right winding drum cover plate 2-1 is attached to the axial end face of the winding drum 3 to support, and the outside of the attached part is filled with sealing glue to prevent water from entering the inside of the cable drum. The outer ring of the right bearing 2-4 is installed in the right wire harness shell 2-2, and the center of the coil spring cover 4-2 limits the right bearing 2-4 in the axial direction; to prevent the right bearing 2-4 from moving axially. The inner ring of the right bearing 2-4 is sleeved on the mandrel 1-6. The inner ring of the brush holder 2-5 is sleeved on the mandrel 1-6, and the brush holder 2-5 is radially provided with a plurality of threaded holes 2-5-2, which are fixedly connected by set screws. The end face of the brush holder 2-5 is provided with a plurality of holes 2-5-1, the brush stator 5-1 is provided with a plurality of limiting rods 5-1-1, and the holes 2-5-1 and the limiting rods 5-1-1 are inserted and connected to limit the axial direction.

[0036] As Figure 5 , the brush assembly structure schematic diagram, the brush assembly 5 is highly integrated and integrally packaged, and is dustproof and waterproof. The brush stator 5-1 is provided with a first quick plug connector 5-1-2, and the incoming line 6-1 of the wire harness 6 is connected by quick plug connection; the brush rotor 5-2 is provided with a second quick plug connector 5-2-1, and the outgoing line 6-2 of the wire harness 6 is connected by quick plug connection. The end face of the brush holder 2-5 is provided with a plurality of holes 2-5-1, the brush stator 5-1 is provided with a plurality of limiting rods 5-1-1, and the holes 2-5-1 and the limiting rods 5-1-1 are inserted and connected to limit the axial direction. The brush rotor 5-2 is provided with circumferentially distributed mounting holes 5-2-2, which are connected to the right wire harness shell 2-2 of the right support shell assembly 2 by bolts. A plurality of support rods 2-6 are arranged between the brush assembly 5 and the right wire harness shell 2-2 for axially supporting the brush assembly 5, so that the bolt connection between the two is more reliable. The quick plug connection is installed or replaced. The first quick plug connector 5-1-2 and the second quick plug connector 5-2-1 are both designed to be waterproof. The brush assembly structure is convenient to maintain, and has good waterproof and shockproof performance.

[0037] As Figure 1The one end of the incoming wire 6-1 in the wire harness 6 is connected with the power line of the crane body, and the other end is connected with the first quick plug connector 5-1-2 of the brush stator 5-1 through the internal cavity of the mandrel 1-6; the outgoing wire 6-2 is the cable wound on the cable drum, and the one end is connected with the brush rotor 5-2 through the second quick plug connector 5-2-1, and the other end is fixed on the crane arm head to provide power and transmit signals for the electrical components of the crane arm head. The connection between the incoming wire 6-1 and the outgoing wire 6-2 in the wire harness 6 and the cable drum is sealed to prevent rainwater from entering the internal cavity of the cable drum through the incoming wire 6-1 and the outgoing wire 6-2.

[0038] As shown in the drawings, Figure 4 The coil spring assembly 4 comprises a coil spring 4-1, a coil spring cover 4-2, a coil spring cover cover plate 4-3, a first stop shaft sleeve 4-4 and a second stop shaft sleeve 4-5. A plurality of coil spring 4-1 and coil spring cover 4-2 assemblies are connected in series. The outer ring buckle of the first coil spring 4-1 is connected with the outer ring buckle of the first coil spring cover 4-2, the inner ring buckle of the first coil spring 4-1 is connected with the inner ring buckle of the second coil spring cover 4-2, and so on, and the inner ring buckle of the last coil spring 4-1 is fixedly connected with the second stop shaft sleeve 4-5, and the second stop shaft sleeve 4-5 is fixedly connected with the mandrel 1-6 through a locking screw. The coil spring cover cover plate 4-3 is sleeved on the mandrel 1-6 to limit the coil spring 4-1 and prevent the coil spring 4-1 from falling out of the coil spring cover 4-2. In operation, the outer ring of the first coil spring 4-1 is driven by the drum 3 to drive the coil spring cover 4-2 to wind and store power, the inner ring of the first coil spring 4-1 drives the inner ring of the second coil spring cover 4-2 to rotate and in turn drives the second coil spring 4-1 to store power, and so on, and the inner ring of the last coil spring 4-1 is fixed on the second stop shaft sleeve 4-5 to realize the series connection of the coil springs and store power. The first stop shaft sleeve 4-4 is provided with a jackscrew hole, and the jackscrew hole of the first stop shaft sleeve 4-4 is fixedly connected with the mandrel 1-6 through a jackscrew to prevent the first stop shaft sleeve 4-4 from moving axially. The coil spring assembly 4 is designed in a modular manner, and each coil spring 4-1 and coil spring cover 4-2 assembly is a whole module assembly. Different numbers of coil spring 4-1-coil spring cover 4-2 assemblies can be set according to the length of the cable, and the coil spring 4-1 can be replaced to meet the specific cable tension requirements of the cable drum.

[0039] The technical scheme of the present application proposes a modular combination structure, and six parts are connected to form a modular high-integration arm outer cable drum device. The six parts are relatively independent assemblies and can be independently disassembled, inspected, repaired or replaced. The drum 3, the coil spring assembly 4, the brush assembly 5 and the mandrel 1-6 in the six parts can be replaced and matched to adapt to different lengths of cables and different numbers of transmission signals in use. Through modular combination, long-distance cable drums such as Figure 1 and short-distance cable drums such as Figure 9 can be made. The short-distance cable drum is provided with two coil spring 4-1-coil spring cover 4-2 assemblies, and the drum 3 is provided with one layer of cable winding.

[0040] Specific implementation: the flange plate 1-7 in the left support flange assembly 1 is fixed on the first section telescopic arm of the crane by bolts, the wire 6-1 at one end of the wire harness 6 is connected to the power line of the crane body, and the other end of the outgoing line 6-2 is fixed on the arm head of the crane to provide power and transmit signals to the electrical devices of the arm head of the crane. When the cable drum is not working, the telescopic arm of the crane is in an unextended state, and the cables led out by the outgoing line 6-2 are wound in multiple layers on the drum 3. When the crane works, that is, the telescopic arm is extended, the arm head pulls the outgoing line 6-2, that is, the cable is unwound from the drum 3, at the same time, the drum 3 is driven to rotate around the core shaft 1-6, and the first coil spring cover 4-2 is also driven to rotate, the outer ring of the first coil spring 4-1 is driven to rotate to realize winding and energy storage, the inner ring of the first coil spring 4-1 drives the second coil spring cover 4-2 and further drives the second coil spring 4-1 to store energy, and so on. The inner ring of the last coil spring 4-1 is fixed on the second stop shaft sleeve 4-5 to realize the series connection of the coil springs and store energy. The multiple groups of coil springs 4-1 are all in a stressed state, which ensures that the cables led out by the outgoing line 6-2 are always in a tension state, and the neat stretching state of the outgoing cable is ensured. The drum 3 rotates at the same time to drive the right wire harness shell 2-2 to rotate, and further drive the brush rotor 5-2 to rotate. The brush rotor 5-2 rotates relative to the brush stator 5-1, and the brush assembly 5 can realize power and signal transmission while the brush rotor 5-2 rotates relative to the brush stator 5-1. The brush stator 5-1 and the brush holder 2-5 are axially limited and connected, the first quick connector 5-1-2 of the brush stator 5-1 is fixedly connected with the incoming line 6-1, the brush holder 2-5 and the core shaft 1-6 are fixedly connected, and the core shaft 1-6 and the flange plate 1-7 are fixedly connected. Therefore, the brush stator 5-1, the incoming line 6-1, the brush holder 2-5, the core shaft 1-6 and the flange plate 1-7 are all in a relatively static state. When the telescopic arm of the crane is retracted, the torsional elastic force of the coil spring 4-1 will drive the drum 3 to rotate in the opposite direction, and the drum 3 will wind the outgoing line 6-2, that is, the cable, in multiple layers.

[0041] The left winding drum vertical plate 1-1, the left winding drum cover plate 1-2, the wire guide plate 1-10, the right winding drum cover plate 2-1 are planar plates, the mandrel 1-6 is a pipe, the protective cover 1-9 is a semi-circular ring, the right wire harness shell 2-2 is a cylinder with upper and lower bottom surfaces penetrating, the brush holder 2-5 is a cylinder with upper and lower bottom surfaces penetrating, the support rod 2-6 is a cylinder with upper and lower bottom surfaces penetrating, the wire harness cover 2-8 has a cylindrical body with a cavity at one end, the right winding drum vertical plate 2-9 is a circular ring plate, the coil spring cover plate 4-3 is a circular ring plate, the incoming wire 6-1 and the outgoing wire 6-2 are electric wires, the oil seal seat 1-3, the sealing washer 1-4, the oil seal 1-5, the flange plate 1-7, the left bearing 1-8, the sealing washer 2-3, the right bearing 2-4, the sealing ring 2-7, the coil spring 4-1, the coil spring cover 4-2, the first stop shaft sleeve 4-4, the second stop shaft sleeve 4-5, the brush stator 5-1, the brush rotor 5-2, the incoming wire 6-1 and the outgoing wire 6-2 have many types available in the prior art, and those skilled in the art can select them according to actual needs, which will not be exemplified in the present embodiment.

[0042] Each embodiment in the specification is described in a progressive manner, and the same and similar parts between each embodiment can be referred to each other, and each embodiment mainly explains the difference from other embodiments.

[0043] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice in the art to which the application pertains. The specification and examples are to be regarded as illustrative only, and the true scope and spirit of the application is indicated by the claims.

[0044] Finally, it should be noted that: first, in the description of the present application, it should be pointed out that unless otherwise specified and limited, the terms "mounting", "connection", "connection", "fitting" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to indicate the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change;

[0045] Secondly: the embodiment disclosed in the embodiment of the present application only relates to the structure involved in the embodiment of the present application, and other structures can be referred to the general design; the above specific embodiments further illustrate the purpose, technical scheme and beneficial effects of the present application, and it should be understood that the above is only the specific embodiment of the present application, and is not used to limit the protection scope of the present application, and any modification, equivalent replacement, improvement, etc. made on the basis of the technical scheme of the present application should be included in the protection scope of the present application.

Claims

1. A modular high-integrated arm external cable drum device for a crane, characterized by, The application relates to a brush assembly and a brush assembly of a motor, and belongs to the technical field of motors. The left supporting flange assembly (1) comprises a left drum vertical plate (1-1), a left drum cover plate (1-2), an oil seal seat (1-3), a mandrel (1-6), a flange plate (1-7) and a left bearing (1-8), the left drum vertical plate (1-1) and the left drum cover plate (1-2) are located at the two sides of the flange plate (1-7) respectively, the left drum vertical plate (1-1) is fixedly connected with the flange plate (1-7), the left drum cover plate (1-2) is fixedly connected with the flange plate (1-7), a left bearing through hole is formed in the center of the outer wall of the left drum cover plate (1-2) and matched with the left bearing (1-8), the left bearing through hole is axially matched with the outer ring of the left bearing (1-8) to limit the left bearing (1-8), and the outer wall of the left drum cover plate (1-2) is matched with the inner wall of the drum (3); the side edge of the left drum vertical plate (1-1) is matched with the axial end surface of the drum (3), and the flange plate (1-7) is sleeved and fixedly connected on the mandrel (1-6); The right supporting shell assembly (2) comprises a right drum cover plate (2-1), a right wire harness shell (2-2), a right bearing (2-4), a brush seat (2-5), a supporting rod (2-6) and a right drum vertical plate (2-9), the right drum cover plate (2-1), the right drum vertical plate (2-9), a sealing gasket (2-3) and the right wire harness shell (2-2) are fixedly connected, the outer wall of the right drum cover plate (2-1) is matched with the inner wall of the drum (3) to support the drum (3); the side edge of the right drum cover plate (2-1) is sealingly matched with the axial end surface of the drum (3) to support the drum (3), the outer ring of the right bearing (2-4) is installed on the inner side of the right wire harness shell (2-2); the inner ring of the right bearing (2-4) is sleeved on the mandrel (1-6), the inner ring of the brush seat (2-5) is sleeved on the mandrel (1-6), a plurality of threaded holes (2-5-2) are arranged in the radial direction of the brush seat (2-5), the brush seat (2-5) is fixedly connected with the mandrel (1-6); a plurality of hole holes (2-5-1) are arranged on the end surface of the brush seat (2-5), a plurality of limiting rods (5-1-1) are arranged on the brush stator (5-1), the hole holes (2-5-1) and the limiting rods (5-1-1) are inserted and connected to realize axial limiting, and a plurality of supporting rods (2-6) are arranged between the brush assembly (5) and the right wire harness shell (2-2).

2. The modular high-integration arm outer cable drum device for a crane according to claim 1, characterized in that, The wire harness (6) comprises an incoming wire (6-1) and an outgoing wire (6-2), the incoming wire (6-1) is connected to the brush stator (5-1) after passing through the left support flange assembly (1), and the brush rotor (5-2) is electrically connected to the outgoing wire (6-2).

3. The modular high-integration arm outer cable drum device for a crane according to claim 1, characterized in that, The left support flange assembly (1) comprises a plurality of sealing washers (1-4) and an oil seal (1-5), the outer side of the left drum vertical plate (1-1) is provided with the sealing washer (1-4), the left drum vertical plate (1-1) is fixedly connected to the flange plate (1-7) through a fixing bolt, the left drum cover plate (1-2) is fixedly connected to the flange plate (1-7) through a fixing bolt, the sealing washer (1-4) is arranged on the inner side of the fixing bolt, and the oil seal (1-5) is arranged at the connection position of the oil seal seat (1-3) and the flange plate (1-7).

4. The modular high-integration arm outer cable drum device for a crane according to claim 1, characterized in that, The right support shell assembly (2) comprises a sealing washer (2-3), a sealing ring (2-7) and a wire harness cover (2-8), the sealing washer (2-3) is arranged between the right drum vertical plate (2-9) and the right wire harness shell (2-2), the right wire harness shell (2-2) and the wire harness cover (2-8) are fixedly connected, and the sealing ring (2-7) is arranged between the right wire harness shell (2-2) and the wire harness cover (2-8).

5. The modular high-integration arm outer cable drum device for a crane according to claim 1, characterized in that, The coil spring assembly (4) comprises N coil springs (4-1), a coil spring cover (4-2), a coil spring cover cover plate (4-3), a first stop shaft sleeve (4-4) and a second stop shaft sleeve (4-5), the coil spring cover (4-2) is sleeved on the right bearing (2-4), the coil spring cover (4-2), the right drum cover plate (2-1), the right drum vertical plate (2-9), the sealing washer (2-3) and the right wire harness shell (2-2) are fixedly connected, the outer ring buckle of the nth coil spring (4-1) is connected with the outer ring buckle of the nth coil spring cover (4-2), the inner ring buckle of the nth coil spring (4-1) is connected with the inner ring buckle of the (n+1)th coil spring cover (4-2), 1≤n≤N, the inner ring buckle of the Nth coil spring (4-1) is fixedly connected with the second stop shaft sleeve (4-5), and the first stop shaft sleeve (4-4) and the second stop shaft sleeve (4-5) are fixedly connected with the mandrel (1-6); the coil spring cover cover plate (4-3) is sleeved on the mandrel (1-6) to limit the coil spring (4-1) and prevent the coil spring (4-1) from falling out of the coil spring cover (4-2); During operation, the outer ring of the first coil spring (4-1) is driven by the drum (3) to drive the coil spring cover (4-2) to realize winding and energy storage, the inner ring of the nth coil spring (4-1) drives the inner ring of the (n+1)th coil spring cover (4-2) to rotate and further drives the (n+1)th coil spring (4-1) to store energy, thereby realizing the series energy storage of the coil springs (4-1).

6. The modular high-integration arm outer cable drum device for a crane according to claim 1, characterized by, The side edge of the left drum vertical plate (1-1) is filled with sealant at the abutting position with the axial end surface of the drum (3) to prevent rainwater from entering the inside of the drum (3).

7. The modular high-integration arm outer cable drum device for a crane according to claim 1, characterized by, The utility model relates to a kind of winding drum and protective cover, including protective cover (1-9) and wire plate (1-10), protective cover (1-9) is arranged outside winding drum (3), bolt hole (1-9-2) is set on protective cover (1-9), protective cover (1-9) and wire plate (1-10) are detachably fixed connection by bolt hole (1-9-2), reinforcing rib (1-9-1) for improving the strength of protective cover (1-9) is additionally arranged in protective cover (1-9).

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