Modularized high-integration out-arm cable drum device for crane

Abstract

The invention discloses a modular high-integration out-arm cable drum device for a crane, which is characterized in that a left support flange assembly (1) is rotatably connected with a right support shell assembly (2), the left support flange assembly (1) is fixedly connected with one end of a drum (3), the right support shell assembly (2) is fixedly connected with the other end of the drum (3), and the drum (3) is sleeved and fixedly connected with a coil spring assembly (4); wherein the electric brush assembly (5) comprises an electric brush stator (5-1) and an electric brush rotor (5-2), the electric brush stator (5-1) is fixedly connected with the right supporting shell assembly (2), the electric brush rotor (5-2) is sleeved and rotationally connected with the electric brush stator (5-1), and one end of the electric brush rotor (5-2) is fixedly connected with the right supporting shell assembly (2). An inlet wire (6-1) penetrates through the left supporting flange assembly (1) and then is connected with an electric brush stator (5-1), and the other end of the electric brush rotor (5-2) is electrically connected with an outlet wire (6-2). The device consists of six relatively independent assemblies, and can be independently disassembled for inspection, maintenance or replacement.

Description

Technical Field

[0001] The invention relates to a modular high-integration arm outer cable drum device for a crane, and belongs to the technical field of modular high-integration arm outer cable drum devices for cranes. Background Art

[0002] Cables are commonly used components in the engineering field and can provide power for engineering equipment. At present, cables are indispensable for cranes to transmit power and signals to the boom head. The boom of a crane is relatively long, generally 100 meters, so the retraction and storage of long cables is a problem that must be solved, so a cable reel is needed to retract and store the cables. The cable can be released and retracted as the reel rotates forward and backward. Because the cable is thicker and longer, the cable reel is larger in size, and in order to facilitate later maintenance and replacement, it is placed and fixed outside the arm of the crane boom, so it is called an outside-arm cable reel.

[0003] The outboard cable is an indispensable electrical component of current lifting machinery. The outboard cable reels currently in use have the following problems: 1. The outboard cable reels are expensive; 2. The planetary mechanism and slip ring structure are complex; 3. The modularization level of the brush assembly is low; 4. The current sealing structure and brush structure are prone to water ingress and rust, resulting in a high failure rate; 5. The current brush structure has many wiring harnesses and is arranged in a messy manner, making it inconvenient to disassemble and repair after a failure. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the defects of the prior art, such as "the existing arm cable reels are expensive; the planetary mechanism and slip ring structure are complex, the wiring harnesses are numerous and the layout is messy; the modularization level of the brush assembly is low; the current sealing structure and brush structure are prone to water ingress and rust, resulting in a high failure rate; the current brush structure has many wiring harnesses and the layout is messy, which is inconvenient to disassemble and repair after a failure." The present invention proposes an arm cable reel with modular structure design, integrated components, good sealing performance, convenient disassembly and maintenance, and high reliability, which is used for crane arm head signal transmission. The manufacturing cost is lower, the reliability of the cable reel is improved, and the installation and maintenance are convenient, and it has waterproof and shockproof functions.

[0005] Preferably, the present invention provides a modular high-integration arm outer cable reel device for a crane, comprising a left support flange assembly, a right support shell assembly, a reel, a coil spring assembly, a brush assembly and a wiring harness, wherein the left support flange assembly is rotatably connected to the right support shell assembly, the left support flange assembly is fixedly connected to one end of the reel, the right support shell assembly is fixedly connected to the other end of the reel, and the reel is sleeved and fixedly connected to the coil spring assembly; wherein 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.

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

[0007] Preferably, the left supporting flange assembly includes a left reel upright plate, a left reel cover plate, an oil seal seat, a core shaft, a flange and a left bearing. The left reel upright plate and the left reel cover plate are respectively located on both sides of the flange plate. The left reel upright plate is fixedly connected to the flange plate, and the left reel cover plate is fixedly connected to the flange plate. A left bearing through hole matching the left bearing is provided at the center of the left reel cover plate. The left bearing through hole is axially fitted with the outer ring of the left bearing to achieve limiting. The outer wall of the left reel cover plate is fitted with the inner wall of the reel; the side edge of the left reel upright plate is fitted with the axial end face of the reel, and a flange is sleeved and fixedly connected on the core shaft.

[0008] Preferably, the left supporting flange assembly includes a plurality of sealing gaskets and oil seals, a sealing gasket is arranged on the outer side of the left reel vertical plate, the left reel vertical plate is fixedly connected to the flange by fixing bolts, the left reel cover plate is fixedly connected to the flange by fixing bolts, the sealing gasket is arranged on the inner side of the fixing bolts, and the oil seal is arranged at the connection between the oil seal seat and the flange.

[0009] Preferably, the right support housing assembly includes a right drum cover, a right harness housing, a right bearing, a brush holder, a support rod and a right drum stand. The right reel cover, right reel vertical plate, sealing gasket and right wiring harness shell are connected by bolts, and the outer wall of the right reel cover fits with the inner wall of the reel to achieve support; the side of the right reel cover seals and fits with the axial end face of the reel to achieve support, and the outer ring of the right bearing is installed on the inner side of the right wiring harness shell; the inner ring of the right bearing is sleeved on the core shaft, and the inner ring of the brush holder is sleeved on the core shaft, and the brush holder is radially provided with a plurality of threaded holes, and the brush holder is fixedly connected to the core shaft by set screws; a plurality of holes are provided on the end face of the brush holder, and a plurality of limit rods are provided on the brush stator, and the holes and the limit rods are inserted and connected to achieve circumferential limit, and a plurality of support rods are provided between the brush assembly and the right wiring harness shell.

[0010] Preferably, the right support shell assembly includes a sealing gasket, a sealing ring and a wiring harness cover, a sealing gasket is arranged between the right reel vertical plate and the right wiring harness shell, the right wiring harness shell and the wiring harness cover are fixedly connected, and a sealing ring is arranged between the right wiring harness shell and the wiring harness cover.

[0011] Preferably, the coil spring assembly includes 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 drum cover plate, the right drum vertical plate, the sealing gasket and the right harness housing are fixedly connected, the nth coil spring outer ring buckle is connected to the nth coil spring cover outer ring buckle, the nth coil spring inner ring buckle is connected to the n+1th coil spring cover inner ring buckle, 1≤n≤N, the Nth coil spring inner ring buckle is fixedly connected to the second stop shaft sleeve buckle, and the first stop shaft sleeve and the second stop shaft sleeve are respectively fixedly connected to the core shaft; the coil spring cover cover plate is sleeved on the core shaft to limit the coil spring to prevent the coil spring from falling off the coil spring cover; During operation, the outer ring of the first coil spring is driven by the winding drum to drive the coil spring cover to achieve winding and force storage. The inner ring of the nth coil spring drives the inner ring of the n+1th coil spring cover to rotate and then drives the n+1th coil spring to store force, thereby realizing the coil springs in series to store force.

[0012] Preferably, the joint between the side edge of the left drum upright plate and the axial end surface of the drum is filled with sealant to prevent rainwater from entering the interior of the drum.

[0013] Preferably, it includes a protective cover and a wire plate. The protective cover is arranged outside the reel, bolt holes are provided on the protective cover, the protective cover and the wire plate are detachably fixedly connected through the bolt holes, and reinforcing ribs are added inside the protective cover to increase the strength of the protective cover.

[0014] The beneficial effects achieved by the present invention are: The present invention proposes an arm-outboard cable reel with modular structural design, integrated components, good sealing performance, convenient disassembly and maintenance, and high reliability. The reel comprises a left supporting flange assembly, a right supporting shell assembly, a reel, a coil spring assembly, a brush assembly, and a wiring harness. The six parts are all relatively independent assemblies and can be independently disassembled for inspection, maintenance or replacement. The reel, coil spring assembly, brush assembly, and core shaft can all be replaced and matched to be suitable for use conditions with cables of different lengths and different numbers of transmitted signals. The left support flange assembly is rotatably connected to the right support housing assembly, the left support flange assembly is fixedly connected to one end of the reel, the right support housing assembly is fixedly connected to the other end of the reel, and the reel is sleeved and fixedly connected to the coil spring assembly; wherein the brush assembly comprises a brush stator and a brush rotor, the brush stator is fixedly connected to the right support housing 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 housing assembly, and is used for crane boom head signal transmission. The present invention has lower manufacturing cost, improves the reliability of the cable reel, is convenient for installation and maintenance, and has waterproof and shockproof functions; The coil spring assembly of the present invention adopts a modular design, and each set of coil springs and a coil spring cover assembly are used as an integral module assembly. Different numbers of coil spring-coil spring cover assemblies can be set according to the cable length, and the coil springs can be replaced to achieve the specific cable tension requirements of the cable drum; The center of the left drum cover plate is axially fitted with the outer ring of the left bearing to achieve position limiting, the outer wall of the left drum cover plate is fitted with the inner wall of the drum to support the drum, the side of the left drum vertical plate is fitted with the axial end face of the drum to support, and the outer side of the fitting part is filled with sealant to prevent rainwater from entering the cable drum. Reinforcement ribs are added inside the protective cover to improve the strength of the protective cover and prevent the cable rope from running out of the drum; prevent rain, snow and ice from eroding the cable, and prevent water from entering the cable drum, causing short circuit failure of electrical components. The sealing gasket set between the right drum vertical plate and the right harness shell of the right support shell assembly can be a rubber sealing gasket to prevent rainwater from entering the cable drum. The outer wall of the right drum cover plate is fitted with the inner wall of the drum to achieve support; the side of the right drum cover plate is fitted with the axial end face of the drum to support the drum, and the outer side of the fitting part is filled with sealant to prevent water from entering the cable drum. The outer ring of the right bearing is installed in the right harness housing, and the center of the coil spring cover limits the axial position of the right bearing to prevent the axial movement of the right bearing. The hole and the limit rod realize the axial limit of the insertion connection.

[0015] The brush assembly is highly integrated and packaged in one piece, which is dustproof and waterproof. The brush rotor is equipped with a second quick-plug connector to achieve quick-plug connection with the outlet of the wiring harness. The hole and the limit rod are inserted into the connection to achieve axial limit. The inlet and outlet of the wiring harness and the cable drum matching joints are sealed to prevent rainwater from entering the cable drum through the inlet and outlet. The coil spring assembly adopts a modular design. Each set of coil springs and a coil spring cover assembly are used as an integral module assembly. Different numbers of coil spring-coil spring cover assemblies 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 drum. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the embodiments are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Attached Figure 1 It is a schematic diagram of the structure of the medium and long distance cable reel device of the present invention; Attached Figure 2 It is a schematic diagram of the left supporting flange assembly in the present invention; Attached Figure 3 It is a schematic diagram of the structure of the right support housing assembly in the present invention; Attached Figure 4 It is a schematic diagram of the coil spring assembly structure of the present invention; Attached Figure 5 It is a schematic diagram of the brush holder structure in the present invention; Attached Figure 6 It is a schematic diagram of the structure of the brush assembly in the present invention; Attached Figure 7 It is a schematic diagram of the overall appearance structure of the cable reel in the present invention; Attached Figure 8 It is a schematic diagram of the protective cover structure in the present invention; Attached Fig. 9 It is a schematic diagram of the structure of the short-distance cable reel of the present invention; Meaning of reference numerals: 1-left supporting flange assembly; 1-1-left reel vertical plate; 1-2-left reel cover plate; 1-3-oil seal seat; 1-4-sealing gasket; 1-5-oil seal; 1-6-core shaft; 1-7-flange; 1-8-left bearing; 1-9-protective cover; 1-10-wire plate; 1-9-1-reinforcement rib; 1-9-2-bolt hole; 2-right supporting housing assembly; 2-1-right reel cover plate; 2-2-right wiring harness housing; 2-3-sealing gasket; 2-4-right bearing; 2-5-brush holder; 2-6-support rod; 2-7-sealing ring; 2-8-wiring harness cover; 2-9-right reel vertical plate; 2-5-1-threaded hole; 2-5-2-hole; 3-reel; 4-coil spring assembly; 4-1-coil spring; 4-2-coil spring cover; 4-3-coil spring cover plate; 4-4-first stop sleeve; 4-5-second stop sleeve; 5-brush assembly; 5-1-brush stator; 5-2-brush rotor; 5-1-1-first quick-connect connector; 5-1-2-second quick-connect connector; 5-2-1-third quick-connect connector; 5-2-2-mounting hole; 6-wiring harness; 6-1-incoming wire; 6-2-outgoing wire. DETAILED DESCRIPTION

[0018] If the descriptions of "first" and "second" etc. are involved in the present invention, they are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0019] See also Figure 1 , the present invention proposes a modular high-integrated arm cable reel device, such as Figure 1, including six parts, namely, the left support flange assembly 1, the right support housing assembly 2, the reel 3, the coil spring assembly 4, the brush assembly 5, and the wiring harness 6. The left support flange assembly 1 includes: the left reel vertical plate 1-1, the left reel cover plate 1-2, the oil seal seat 1-3, the sealing gasket 1-4, the oil seal 1-5, the core shaft 1-6, the flange 1-7, the left bearing 1-8, the protective cover 1-9, and the wire plate 1-10. The right support housing assembly 2 includes: the right reel cover plate 2-1, the right wiring harness shell 2-2, the sealing gasket 2-3, the right bearing 2-4, the brush seat 2-5, the support rod 2-6, the sealing ring 2-7, the wiring harness outer cover 2-8, and the right reel vertical plate 2-9. The coil spring assembly 4 includes: the coil spring 4-1, the coil spring cover 4-2, the coil spring cover plate 4-3, the first stop sleeve 4-4, and the second stop sleeve 4-5. The brush assembly 5 includes a brush stator 5-1 and a brush rotor 5-2. The wiring harness 6 includes an incoming line 6-1 and an outgoing line 6-2.

[0020] like Figure 2 The flange 1-7 in the left support flange assembly 1 is fixed to the crane boom by bolts, the inner wall of the flange 1-7 is inserted and connected with the outer wall of the core shaft 1-6, and the radially arranged set screws are used to fix 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 placed on the outside of the left bearing 1-8, and the inner ring of the bearing 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 fixedly connected by a number of bolts. The sealing gasket 1-4 is arranged on the outside of the left drum vertical plate 1-1, and the sealing gasket 1-4 is arranged on the inside of the fixing bolts to prevent water from entering the cable drum. The center of the left drum cover plate 1-2 is axially fitted with the outer ring of the left bearing 1-8 to achieve limit, and the outer wall of the left drum cover plate 1-2 is fitted and supported with the inner wall of the drum 3. The side of the left drum upright plate 1-1 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 interior of the cable drum. The oil seal 1-5 can be a rotating skeleton oil seal with dustproof, and the left bearing 1-8 can be a deep groove ball bearing. Figure 7 The cable drum is provided with a protective cover 1-9, which is semicircular and can be made of plastic or metal. The protective cover 1-9 is detachably fixedly connected to the conductor plate 1-10 through bolt holes 1-9-2. A reinforcing rib 1-9-1 is added inside the protective cover 1-9 to improve the strength of the protective cover and prevent the cable from running out of the drum; prevent rain, snow, ice and frost from corroding the cable, and prevent water from entering the cable drum, which may cause short circuit failure of electrical components.

[0021] like Figure 3In the right support shell assembly 2, the four parts of the coil spring cover 4-2, the right drum cover plate 2-1, the right drum vertical plate 2-9, the sealing gasket 2-3, and the right harness shell 2-2 are connected by bolts, and the four parts are relatively fixed. The sealing gasket 2-3 arranged between the right drum vertical plate 2-9 of the right support shell assembly 2 and the right harness shell 2-2 can be a rubber sealing gasket to prevent rainwater from entering the cable drum. The outer wall of the right drum cover plate 2-1 fits with the inner wall of the drum 3 to achieve support; the side of the right drum cover plate 2-1 fits 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 cable drum. The outer ring of the right bearing 2-4 is installed in the right harness shell 2-2, and the center of the coil spring cover 4-2 limits the axial position of the right bearing 2-4; prevent the axial movement of the right bearing 2-4. The inner ring of the right bearing 2-4 is mounted on the core shaft 1-6. The inner ring of the brush holder 2-5 is sleeved on the core shaft 1-6, and a plurality of threaded holes 2-5-2 are arranged in the radial direction of the brush holder 2-5, and the two are fixedly connected by set screws. A plurality of holes 2-5-1 are arranged on the end face of the brush holder 2-5, and a plurality of limit rods 5-1-1 are arranged on the brush stator 5-1, and the holes 2-5-1 and the limit rods 5-1-1 realize the axial limit of the insertion connection.

[0022] like Figure 5 , schematic diagram of the brush assembly structure, the brush assembly 5 is highly integrated, integrally packaged, dustproof and waterproof. The brush stator 5-1 is provided with a first quick-plug connector 5-1-2, which is quickly connected with the incoming line 6-1 of the wiring harness 6; the brush rotor 5-2 is provided with a second quick-plug connector 5-2-1, which is quickly connected with the outgoing line 6-2 of the wiring harness 6. A plurality of holes 2-5-1 are provided on the end face of the brush holder 2-5, and a plurality of limit rods 5-1-1 are provided on the brush stator 5-1. The holes 2-5-1 and the limit rods 5-1-1 are inserted and connected to realize axial limit. The brush rotor 5-2 is provided with circumferentially distributed mounting holes 5-2-2, and is bolted and fixedly connected with the right wiring harness shell 2-2 of the right support shell assembly 2 through the mounting holes 5-2-2. A plurality of support rods 2-6 are provided between the brush assembly 5 and the right wiring harness shell 2-2, which are used to axially support the brush assembly 5, so that the bolt connection between the two is more reliable. Quick plug connection installation or replacement. The first quick plug connector 5-1-2 and the second quick plug connector 5-2-1 are both waterproof. The brush assembly structure is easy to maintain and has good waterproof and shockproof performance.

[0023] like Figure 1One end of the incoming line 6-1 in the harness 6 is connected to the power line of the crane body, and the other end is connected to the first quick-plug connector 5-1-2 of the brush stator 5-1 through the internal cavity of the core shaft 1-6; the outgoing line 6-2 is a cable wound on the cable drum, and one end is connected to the brush rotor 5-2 through the second quick-plug connector 5-2-1. The other end of the outgoing line 6-2 is fixed to the crane boom head to provide power and transmit signals to the crane boom head electrical parts. The ingoing line 6-1 and the outgoing line 6-2 in the harness 6 are sealed with the cable drum fittings to prevent rainwater from entering the cable drum through the ingoing line 6-1 and the outgoing line 6-2.

[0024] like Figure 4 The coil spring assembly 4 includes: a coil spring 4-1, a coil spring cover 4-2, a coil spring cover cover plate 4-3, a first stop sleeve 4-4 and a second stop sleeve 4-5. Multiple sets of coil springs 4-1 and coil spring cover 4-2 components are connected in series in sequence. The outer ring buckle of the first coil spring 4-1 is connected to 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 to the inner ring buckle of the second coil spring cover 4-2, and so on. The inner ring buckle of the last coil spring 4-1 is fixedly connected to the second stop sleeve 4-5 buckle, and the second stop sleeve 4-5 is fixedly connected to the core shaft 1-6 by a set screw. The coil spring cover cover plate 4-3 is mounted on the core shaft 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 force storage, and 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 then drives the second coil spring 4-1 to store force, and so on, the inner ring of the last coil spring 4-1 is fixed on the second stop sleeve 4-5 to realize coil spring series force storage. A top screw hole is opened on the first stop sleeve 4-4, and the top screw hole of the first stop sleeve 4-4 is fixedly connected to the core shaft 1-6 through the top screw to prevent the first stop sleeve 4-4 from axial movement; the coil spring assembly 4 adopts a modular design, and each group of coil springs 4-1 and a coil spring cover 4-2 assembly is used as an integral module assembly. Different numbers of coil springs 4-1-coil spring cover 4-2 assemblies can be set according to the cable length, and the coil spring 4-1 can be replaced to achieve the specific cable tension requirements of the cable drum.

[0025] The technical solution of the invention proposes a modular combination structure. The six parts are connected to form a modular high-integration arm cable reel device. The six parts are relatively independent assemblies and can be independently disassembled for inspection, repair or replacement. Among the six parts, the reel 3, the coil spring assembly 4, the brush assembly 5, and the core shafts 1-6 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 can be made, such as Figure 1 , and short distance cable reels such as Fig. 9 The short-distance cable reel is provided with two sets of coil spring 4-1-coil spring cover 4-2 components; the reel 3 is provided with a layer of cable winding.

[0026] Specific implementation: The flange 1-7 in the left support flange assembly 1 is fixed to the first telescopic arm of the crane by bolts, one end of the incoming line 6-1 in the wiring harness 6 is connected to the power line of the crane body, and the other end of the outgoing line 6-2 is fixed to the crane arm head to provide power and transmit signals to the crane arm head electrical components. When the cable drum is not working, the crane telescopic arm is in a non-extended state, and the cable led out of the outgoing line 6-2 is wound on the drum 3 in multiple layers. When the crane is working, i.e. the telescopic arm is extended, the arm head pulls the outgoing line 6-2, i.e. the cable is released from the drum 3, and at the same time drives the drum 3 to rotate around the core shaft 1-6, and at the same time drives the coil spring cover 4-2 to rotate, and the outer ring of the first coil spring 4-1 is driven by the coil spring cover 4-2 to rotate to realize winding and power storage, and the inner ring of the first coil spring 4-1 drives the second coil spring cover 4-2 and then drives the second coil spring 4-1 to store power, and so on, the inner ring of the last coil spring 4-1 is fixed on the second stop sleeve 4-5, so that the coil springs are connected in series to store power, and multiple groups of coil springs 4-1 are all in a stressed state, so that the cable led out of the outgoing line 6-2 is always in a tension state when it is pulled out, ensuring the neat stretching state of the outgoing cable. When the drum 3 rotates, it drives the right harness shell 2-2 to rotate, and then drives the brush rotor 5-2 to rotate, and the brush rotor 5-2 rotates relative to the brush stator 5-1. When the brush rotor 5-2 in the brush assembly 5 rotates relative to the brush stator 5-1, power and signal transmission can be realized. The brush stator 5-1 and the brush holder 2-5 are axially limitedly connected, the first quick-insert connector 5-1-2 of the brush stator 5-1 is fixedly connected to the incoming line 6-1, the brush holder 2-5 is fixedly connected to the core shaft 1-6, and the core shaft 1-6 is fixedly connected to the flange 1-7, so the brush stator 5-1, the incoming line 6-1, the brush holder 2-5, the core shaft 1-6, and the flange 1-7 are all in a relatively static state. When the crane telescopic arm is retracted, the torsional elastic force of the coil spring 4-1 drives the drum 3 to rotate in the opposite direction, and the drum 3 winds the outgoing line 6-2, i.e., the cable, in multiple layers.

[0027] The left drum vertical plate 1-1, the left drum cover plate 1-2, the wire plate 1-10, and the right drum cover plate 2-1 are flat plates, the core shaft 1-6 is a pipe fitting, the protective cover 1-9 is in the shape of a semicircular ring, the right harness shell 2-2 is a cylinder with upper and lower bottom surfaces passing through, the brush holder 2-5 is a cylinder with upper and lower bottom surfaces passing through, the support rod 2-6 is a cylinder with upper and lower bottom surfaces passing through, the harness outer cover 2-8 is a cylinder with a accommodating chamber at one end, the right drum vertical plate 2-9 is a circular plate, and the coil spring cover plate 4-3 is a circular plate. The incoming line 6-1 and the outgoing line 6-2 are electrical wires, and there are many models of oil seal seat 1-3, sealing gasket 1-4, oil seal 1-5, flange 1-7, left bearing 1-8, sealing gasket 2-3, right bearing 2-4, sealing ring 2-7, coil spring 4-1, coil spring cover 4-2, first stop sleeve 4-4, second stop sleeve 4-5, brush stator 5-1, brush rotor 5-2, incoming line 6-1, and outgoing line 6-2 that can be used in the prior art. Those skilled in the art can choose according to actual needs, and no examples are given in this embodiment.

[0028] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0029] Those skilled in the art will readily appreciate other embodiments of the invention after considering the specification and practicing the invention invented herein. This application is intended to cover any variations, uses or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art that are not invented by the present invention. The specification and examples are intended to be exemplary only, and the true scope and spirit of the invention are indicated by the claims.

[0030] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", "connected", and "matched" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two elements, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change; Secondly: In the drawings of the embodiments of the present invention, only the structures involved in the embodiments of the present invention are involved, and other structures can refer to the general design; the above specific implementation methods further explain the purpose, technical solutions and beneficial effects of the present application in detail. It should be understood that the above are only specific implementation methods of the present application and are not used to limit the protection scope of the present application. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the present application should be included in the protection scope of the present application.

Claims

1. A modular high-integrated outer arm cable drum device for a crane, characterized in that: The invention comprises a left support flange assembly (1), a right support housing assembly (2), a reel (3), a coil spring assembly (4), a brush assembly (5) and a wiring harness (6); the left support flange assembly (1) is rotatably connected to the right support housing assembly (2); the left support flange assembly (1) is fixedly connected to one end of the reel (3); the right support housing assembly (2) is fixedly connected to the other end of the reel (3); the reel (3) is sleeved and fixedly connected to the coil spring assembly (4); wherein the brush assembly (5) comprises a brush stator (5-1) and a brush rotor (5-2); the brush stator (5-1) is fixedly connected to the right support housing assembly (2); the brush rotor (5-2) is sleeved and rotatably connected to the brush stator (5-1); and one end of the brush rotor (5-2) is fixedly connected to the right support housing assembly (2).

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

3. A modular high-integrated outer arm cable drum device for a crane according to claim 1, characterized in that: The left supporting flange assembly (1) comprises a left reel vertical plate (1-1), a left reel cover plate (1-2), an oil seal seat (1-3), a core shaft (1-6), a flange plate (1-7) and a left bearing (1-8). The left reel vertical plate (1-1) and the left reel cover plate (1-2) are respectively located on both sides of the flange plate (1-7). The left reel vertical plate (1-1) is fixedly connected to the flange plate (1-7), and the left reel cover plate (1-2) is fixedly connected to the flange plate (1-8). 1-7), a left bearing through hole for matching the left bearing (1-8) is provided at the center of the left reel cover plate (1-2), the left bearing through hole is axially fitted with the outer ring of the left bearing (1-8) to limit the left bearing (1-8), the outer wall of the left reel cover plate (1-2) is fitted with the inner wall of the reel (3); the side of the left reel vertical plate (1-1) is fitted with the axial end face of the reel (3), and a flange plate (1-7) is sleeved on and fixedly connected to the core shaft (1-6).

4. A modular high-integrated outer arm cable drum device for a crane according to claim 3, characterized in that: The left supporting flange assembly (1) comprises a plurality of sealing gaskets (1-4) and an oil seal (1-5); a sealing gasket (1-4) is arranged on the outside of the left reel vertical plate (1-1); the left reel vertical plate (1-1) is fixedly connected to the flange plate (1-7) by fixing bolts; the left reel cover plate (1-2) is fixedly connected to the flange plate (1-7) by fixing bolts; the sealing gasket (1-4) is arranged on the inside of the fixing bolts; and the oil seal (1-5) is arranged at the connection between the oil seal seat (1-3) and the flange plate (1-7).

5. The modular high-integrated outer arm cable drum device for crane according to claim 3, characterized in that: The right support housing assembly (2) comprises a right reel cover plate (2-1), a right wiring harness housing (2-2), a right bearing (2-4), a brush holder (2-5), a support rod (2-6) and a right reel vertical plate (2-9). The right reel cover plate (2-1), the right reel vertical plate (2-9), a sealing gasket (2-3) and the right wiring harness housing (2-2) are fixedly connected. The outer wall of the right reel cover plate (2-1) is fitted with the inner wall of the reel (3) to support the reel (3). The side edge of the right reel cover plate (2-1) is sealed with the axial end face of the reel (3) to support the reel (3). The outer ring of the right bearing (2-4) is installed on the right wiring harness housing (2- 2) inside; the inner ring of the right bearing (2-4) is sleeved on the core shaft (1-6), the inner ring of the brush holder (2-5) is sleeved on the core shaft (1-6), the brush holder (2-5) is radially provided with a plurality of threaded holes (2-5-2), and the brush holder (2-5) is fixedly connected to the core shaft (1-6); the end surface of the brush holder (2-5) is provided with a plurality of holes (2-5-1), a plurality of limit rods (5-1-1) are provided on the brush stator (5-1), the holes (2-5-1) and the limit rods (5-1-1) are inserted and connected to realize axial limit, and a plurality of support rods (2-6) are provided between the brush assembly (5) and the right wiring harness housing (2-2).

6. A modular high-integrated outer arm cable drum device for a crane according to claim 5, characterized in that: The right support housing assembly (2) comprises a sealing gasket (2-3), a sealing ring (2-7) and a wiring harness outer cover (2-8); a sealing gasket (2-3) is arranged between the right reel vertical plate (2-9) and the right wiring harness housing (2-2); the right wiring harness housing (2-2) and the wiring harness outer cover (2-8) are fixedly connected; and a sealing ring (2-7) is arranged between the right wiring harness housing (2-2) and the wiring harness outer cover (2-8).

7. A modular high-integrated outer arm cable drum device for a crane according to claim 5, characterized in that: The coil spring assembly (4) comprises N coil springs (4-1), a coil spring cover (4-2), a coil spring 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 gasket (2-3) and the right wiring harness housing (2-2) are fixedly connected; the outer ring buckle of the nth coil spring (4-1) is connected to 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 to the n+1th coil spring cover (4-2); The inner ring buckle is connected, 1≤n≤N, the inner ring buckle of the Nth coil spring (4-1) is buckled and 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 respectively fixedly connected with the core shaft (1-6); the coil spring cover plate (4-3) is sleeved on the core shaft (1-6) to limit the coil spring (4-1) and prevent the coil spring (4-1) from falling off the coil spring cover (4-2); During operation, the outer ring of the first coil spring (4-1) is driven by the winding drum (3) to drive the coil spring cover (4-2) to achieve winding and force storage, and the inner ring of the nth coil spring (4-1) drives the inner ring of the n+1th coil spring cover (4-2) to rotate and then drives the n+1th coil spring (4-1) to store force, thereby achieving series force storage of the coil springs (4-1).

8. The modular high-integrated outer arm cable drum device for a crane according to claim 3, characterized in that: The joint between the side edge of the left drum upright plate (1-1) and the axial end surface of the drum (3) is filled with sealant to prevent rainwater from entering the interior of the drum (3).

9. The modular high-integrated outer arm cable drum device for crane according to claim 3, characterized in that: The invention comprises a protective cover (1-9) and a conductor plate (1-10), wherein the protective cover (1-9) is arranged outside the reel (3), a bolt hole (1-9-2) is provided on the protective cover (1-9), the protective cover (1-9) and the conductor plate (1-10) are detachably fixedly connected via the bolt hole (1-9-2), and a reinforcing rib (1-9-1) is added inside the protective cover (1-9) for improving the strength of the protective cover (1-9).

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