CN219859955U - Wire winding and unwinding equipment - Google Patents

Abstract

The utility model provides a wire coiling and uncoiling device, relates to construction equipment technical field, including walking frame, be provided with driving motor on the walking frame, and driving motor's output shaft's axis vertical arrangement, and the butt joint dish is provided with rotatory main shaft; the walking frame is provided with a butt joint bracket, the butt joint bracket is provided with a plurality of vertical supporting components matched with the rotating main shaft, the rotating main shaft is sleeved with a plurality of wire coil pieces matched with the vertical supporting components, and the wire coil is arranged on the wire coil pieces; be provided with on the butt joint seat with butt joint support complex steady rest, and steady rest is provided with a plurality of and wire coil spare complex steering assembly, and is provided with on the steady rest with butt joint support complex steady assembly. The utility model improves the winding and unwinding efficiency and the safety through the unique structural design, avoids the confusion and winding of wires and cables, and has high practical value and economic benefit.

Description

Wire winding and unwinding equipment

Technical Field

The utility model relates to the technical field of building construction equipment, in particular to wire winding and unwinding equipment.

Background

With the development of modern industry, electric wires and cables are an important carrier for transmitting energy and information, and their production and use have become an indispensable part of many industries. However, as the application of the electric wires and cables is becoming wider, how to rapidly, efficiently and safely collect and discharge the electric wires and cables has become a problem to be solved.

The prior art can adopt different transmission principles to realize the even winding of electric wire and cable through setting up wire mechanism, is equipped with the device such as clearance section of thick bamboo, clearance layer simultaneously, ensures that electric wire and cable receive the pollution when receiving and releasing. However, the prior art is difficult to clamp and lift the wire coil, and limits the winding and unwinding modes of the wires and the cables. Furthermore, the lack of a pressing mechanism for wires and cables of different thicknesses makes the prior art face significant room for improvement and utility.

How to solve the technical problems is the subject of the present utility model.

Disclosure of Invention

In order to solve the defects in the prior art, the utility model provides the wire winding and unwinding equipment which is reasonable in design, safe and reliable, improves winding and unwinding efficiency and safety, avoids confusion and winding of wires and cables, and has high practical value and economic benefit.

The technical scheme adopted for solving the technical problems is as follows: the wire winding and unwinding device comprises a walking frame, wherein a driving motor is arranged on the walking frame, the axis of an output shaft of the driving motor is vertically arranged, a butt joint disc is arranged on the output shaft of the driving motor, a rotating main shaft is arranged on the butt joint disc, and a butt joint assembly matched with the butt joint disc is arranged at the bottom end of the rotating main shaft;

a butt joint seat is arranged at one side of the walking frame, a butt joint support is arranged on the butt joint seat, a plurality of vertical supporting assemblies matched with the rotating main shaft are arranged on the butt joint support, the vertical supporting assemblies are detachably connected with the butt joint support, a plurality of wire disc pieces matched with the vertical supporting assemblies are sleeved on the rotating main shaft, the wire disc is arranged on the wire disc pieces, and fasteners matched with the rotating main shaft are arranged on the wire disc pieces;

the wire coil assembly is characterized in that a firm support matched with the butt joint support is arranged on the butt joint seat, a plurality of steering assemblies matched with the wire coil assembly are arranged on the firm support, and a firm assembly matched with the butt joint support is arranged on the firm support.

In particular, the walking frame is the basis of the utility model, on which the walking assembly is arranged for the movement of the whole device. The driving component is arranged on the walking frame, and the output end of the driving component is provided with a butt joint disc matched with the butt joint component. The rotary main shaft is vertically arranged and is connected with an output shaft of the driving assembly through the butt joint assembly. The butt joint assembly is arranged on the rotary main shaft and is connected with the driving assembly. The butt joint seat is arranged on the walking frame and used for fixing the connection among the butt joint support, the stable support and the walking frame.

The butt joint support is detachably connected with the butt joint seat, and the vertical supporting component is provided with a plurality of along the axis direction of the rotating main shaft, and is detachably arranged on the butt joint support and is in running fit with the rotating main shaft. The wire coil piece is used for loading a wire coil of a cable wire, is sleeved on the rotating main shaft and is positioned right above the vertical supporting component. The fastener can be used to connect the wire coil with the rotating spindle, and the rotating spindle can be used to drive the wire coil to rotate as required.

The firm support is detachably installed on the butt joint seat, and is fixedly connected with the butt joint support through the firm assembly. The steering assembly is arranged on the stable support and used for fixing the cable during winding and unwinding of the cable wire. The stabilizing component is arranged on the steering component and used for reinforcing the connection relation between the steering component and the butt joint bracket.

Further, the butt joint assembly comprises a connecting disc arranged at the bottom end of the rotary spindle, a connecting groove is formed in the connecting disc, a fastening unit matched with the connecting disc is arranged on the butt joint disc, and a connecting protrusion matched with the connecting groove is arranged on the butt joint disc.

Further, the fastening unit comprises a fastening frame uniformly arranged along the circumferential direction of the butt joint disc, a fastening inserted rod is arranged on the fastening frame, and a slot matched with the fastening inserted rod is formed in the connecting disc corresponding to the fastening inserted rod.

Further, the fastening unit comprises a slot arranged on the butt joint disc, an inserting block matched with the slot is arranged on the connecting disc, a limit groove matched with the slot is arranged on the butt joint disc, and a limit block matched with the inserting block is arranged in the limit groove.

Further, a vertical rail is vertically arranged on the butt joint support, the vertical support assembly comprises a sliding block which is in sliding fit with the vertical rail, a limiting block is arranged on the sliding block, a limiting screw which is matched with the butt joint support is arranged on the limiting block, a supporting arm is arranged on the limiting block, a ring block sleeved on the rotating main shaft is arranged at the end part of one end of the supporting arm, and a contra-rotating unit matched with the wire coil part is arranged at the top end of the ring block.

Further, a bearing matched with the rotating main shaft is arranged on the ring block.

Further, the wire coil piece comprises a first wire coil piece and a second wire coil piece which are oppositely arranged, the first wire coil piece is matched with the vertical supporting assembly, the first wire coil piece comprises a first annular plate sleeved on the rotating main shaft, the first annular plate is provided with a fastening ring seat matched with the rotating main shaft, the fastening piece is arranged on the fastening ring seat, a first connecting cylinder matched with the second wire coil piece is arranged on the fastening ring seat, and a connecting mortise is arranged on the first connecting cylinder;

the second wire coil piece comprises a second annular plate sleeved on the rotary main shaft, a second connecting cylinder matched with the first connecting cylinder is arranged on the second annular plate, and a link tenon block matched with the connecting tenon groove is arranged on the second connecting cylinder.

Further, the ring groove is formed in the top surface of the ring block, the counter unit comprises a rotating bearing arranged in the ring groove, an inner ring of the rotating bearing is connected with the ring block, a connecting ring plate is arranged at the top end of the rotating bearing, a protruding block is arranged on the connecting ring plate, and a groove matched with the protruding block is formed in the bottom surface of the first ring plate.

Further, a limiting slot matched with the stable support is formed in the butt joint seat, the butt joint seat is detachably connected with the butt joint support, and the butt joint support is located between the stable support and the rotating main shaft; the walking frame comprises a rectangular frame, a walking assembly is arranged on the rectangular frame, the driving motor is located at one end of the rectangular frame, and the stable support is located at the other end of the rectangular frame.

Further, the firm support includes the rectangle frame, just be provided with on the rectangle frame with spacing slot complex inserted bar, be provided with the firm frame in the rectangle frame, firm subassembly is including setting up firm seat on the firm frame, just be provided with firm screw rod on the firm seat, just be provided with on the butt joint support with firm screw rod complex firm cover.

Further, the steady rest is vertically provided with the steering assembly matched steering sliding rail, the steering assembly comprises a sliding seat arranged in the steering sliding rail, and the sliding seat is provided with a steady rest matched positioning screw rod, the sliding seat is provided with a telescopic movable arm, the front end of the movable arm is provided with a rotating seat, the rotating seat is provided with a rotating shaft matched positioning rod, the rotating shaft is provided with a bogie, and the bogie is provided with steering wheels.

Further, be provided with on the butt joint support with steering component complex is strong the subassembly, vertical be provided with on the butt joint support with the strong subassembly complex is strong the slip rail, it is strong the subassembly including setting up remove the seat in the slip rail to be in it is strong, remove be provided with on the seat with butt joint support complex limit screw rod, remove and be provided with on the seat and strengthen the arm, just be provided with the cover on the arm and establish strong annular plate on the flexible arm that removes.

The cable winding and unwinding device achieves the purpose of winding and unwinding cables through connection and matching of the walking frame, the driving assembly and other parts, has the characteristic of flexible movement and convenience, can rapidly move through the moving assembly on the walking frame, and improves working efficiency under the condition that an operation area needs to be replaced for many times.

In the aspect of cable wire management, the wire coil piece is sleeved on the rotary main shaft, and components such as the stable support, the butt joint support and the vertical support assembly are fixed, so that the cable wire management is simpler, and the unified storage and use are convenient. In addition, the fastener can realize that the rotating main shaft drives the wire coil to rotate, so that the cable wires with required lengths can be taken out quickly.

In the aspect of stability and safety, the utility model adopts the fixation and connection of a plurality of parts, such as a butt joint seat, a butt joint bracket, a steady bracket, a steering assembly and the like, thereby enhancing the stability and safety of the equipment and preventing the equipment from generating accidents such as instability or falling in the use process.

The reliability of the cable wires is enhanced. The cable winding and unwinding device is characterized in that the cable winding and unwinding device is used for reducing the traction force applied to the cable wire through stable fixing of the cable wire when the cable winding and unwinding device is used for winding and unwinding the cable wire, and the problems that the cable wire is damaged or a connecting end is loose due to high stress are avoided when the cable wire is wound and unwound, detached and replaced, so that the reliability of the cable wire is enhanced.

The utility model adopts a modularized structural design, realizes the tight cooperation among all the components, improves the mobility, the management convenience, the stability and the safety of the equipment, enhances the reliability of the cable wires, and is the equipment with practical application value.

Drawings

FIG. 1 is a schematic view of a three-dimensional structure at a first viewing angle according to the present utility model;

FIG. 2 is a schematic view of a second perspective three-dimensional structure according to the present utility model;

FIG. 3 is an enlarged schematic view of the structure of the present utility model at A;

fig. 4 is a matching diagram of the walking frame, stacking rack and vertical support assembly of the utility model;

FIG. 5 is a schematic view of an exploded construction of the vertical support assembly of the present utility model;

FIG. 6 is a schematic diagram of the steering assembly and stiffening assembly of the present utility model;

wherein, the attached drawings are as follows: 1. a walking frame; 11. a walking assembly; 2. a driving motor; 21. a butt joint disc; 3. rotating the main shaft; 31. a docking assembly; 311. a connecting disc; 312. a fastening unit; 4. a butt joint seat; 5. a butt joint bracket; 51. a vertical rail; 52. a strong sliding rail; 53. a stiffening assembly; 531. a movable seat; 532. defining a screw; 533. a stiffening arm; 534. a reinforcing ring plate; 6. a vertical support assembly; 61. a sliding block; 62. a limiting block; 63. a limit screw; 64. a support arm; 65. a ring block; 651. a ring groove; 66. a counter-rotating unit; 661. a rotating bearing; 662. connecting the annular plates; 7. a wire reel member; 71. a fastener; 72. a first wire coil; 721. a first annular plate; 722. a fastening ring seat; 723. a first connecting cylinder; 73. a second wire reel member; 731. a second annular plate; 732. a second connecting cylinder; 8. stabilizing the bracket; 81. a stabilizing assembly; 811. stabilizing the screw rod; 82. steering the sliding rail; 9. a steering assembly; 91. a sliding seat; 92. positioning a screw; 93. a telescopic moving arm; 94. a rotating seat; 95. a rotating shaft; 96. a bogie; 97. and steering wheels.

Detailed Description

Referring to fig. 1 to 4, an electric wire winding and unwinding device comprises a walking frame 1, wherein a driving motor 2 is arranged on the walking frame 1, an axis of an output shaft of the driving motor 2 is vertically arranged, an abutting disc 21 is arranged on the output shaft of the driving motor 2, a rotating main shaft 3 is arranged on the abutting disc 21, and an abutting assembly 31 matched with the abutting disc 21 is arranged at the bottom end of the rotating main shaft 3;

a butt joint seat 4 is arranged at one side of the walking frame 1, a butt joint support 5 is arranged on the butt joint seat 4, a plurality of vertical support assemblies 6 matched with the rotating main shaft 3 are arranged on the butt joint support 5, the vertical support assemblies 6 are detachably connected with the butt joint support 5, a plurality of wire coil pieces 7 matched with the vertical support assemblies 6 are sleeved on the rotating main shaft 3, the wire coil is arranged on the wire coil pieces 7, and fastening pieces 71 matched with the rotating main shaft 3 are arranged on the wire coil pieces 7;

be provided with on the butt joint seat 4 with butt joint support 5 complex firm support 8, and firm support 8 is provided with a plurality of and wire coil piece 7 complex steering assembly 9, and is provided with on the firm support 8 with butt joint support 5 complex firm subassembly 81.

Further, the docking assembly 31 includes a connection pad 311 disposed at the bottom end of the rotating spindle 3, and a connection groove is disposed on the connection pad 311, a fastening unit 312 engaged with the connection pad 311 is disposed on the docking pad 21, and a connection protrusion engaged with the connection groove is disposed on the docking pad 21.

Further, the vertical rail 51 is vertically arranged on the docking bracket 5, the vertical supporting component 6 comprises a sliding block 61 which is in sliding fit with the vertical rail 51, a limiting block 62 is arranged on the sliding block 61, a limiting screw 63 which is matched with the docking bracket 5 is arranged on the limiting block 62, a supporting arm 64 is arranged on the limiting block 62, a ring block 65 sleeved on the rotating main shaft 3 is arranged at one end of the supporting arm 64, and a counter-rotating unit 66 which is matched with the wire coil piece 7 is arranged at the top end of the ring block 65.

Further, the wire coil 7 comprises a first wire coil 72 and a second wire coil 73 which are oppositely arranged, the first wire coil 72 is matched with the vertical supporting assembly, the first wire coil 72 comprises a first annular plate 721 sleeved on the rotating main shaft 3, the first annular plate 721 is provided with a fastening annular seat 722 matched with the rotating main shaft 3, the fastening piece 71 is arranged on the fastening annular seat 722, the fastening annular seat 722 is provided with a first connecting cylinder 723 matched with the second wire coil 73, and the first connecting cylinder 723 is provided with a connecting mortise;

the second wire member 73 includes a second annular plate 731 fitted over the rotary spindle 3, and a second connecting cylinder 732 fitted to the first connecting cylinder 723 is provided on the second annular plate 731, and a link tongue piece fitted to the link tongue groove is provided on the second connecting cylinder 732.

Further, a ring groove 651 is formed in the top surface of the ring block 65, the counter unit 66 includes a rolling bearing 661 disposed in the ring groove 651, an inner ring of the rolling bearing 661 is connected with the ring block 65, a connection ring plate 662 is disposed at the top end of the rolling bearing 661, a bump is disposed on the connection ring plate 662, and a groove matched with the bump is disposed on the bottom surface of the first ring plate 721.

Further, a limit slot matched with the stable support 8 is formed in the docking seat 4, the docking seat 4 is detachably connected with the docking support 5, and the docking support 5 is located between the stable support 8 and the rotary spindle 3; the walking frame 1 comprises a rectangular frame, a walking assembly 11 is arranged on the rectangular frame, the driving motor 2 is located at one end of the rectangular frame, and the stable support 8 is located at the other end of the rectangular frame.

Further, firm support 8 includes the rectangle frame, and is provided with on the rectangle frame with spacing slot complex inserted bar, is provided with firm frame in the rectangle frame, and firm subassembly 81 is provided with firm screw rod 811 including setting up the firm seat on firm frame on the firm seat, and is provided with on the butt joint support 5 with firm screw rod complex firm cover.

Further, the steady rest 8 is vertically provided with a steering assembly matched steering sliding rail 82, the steering assembly 9 comprises a sliding seat 91 arranged in the steering sliding rail 82, a steady rest 8 matched positioning screw 92 is arranged on the sliding seat 91, a telescopic moving arm 93 is arranged on the sliding seat 91, a rotating seat 94 is arranged at the front end of the moving arm, a rotating shaft 95 is arranged on the rotating seat 94, a positioning rod matched with the rotating shaft 95 is arranged on the rotating seat 94, a bogie 96 is arranged on the rotating shaft 95, and steering wheels 97 are arranged on the bogie 96.

Further, a strengthening component 53 matched with the steering component 9 is arranged on the docking bracket 5, a strengthening sliding rail 52 matched with the strengthening component 53 is vertically arranged on the docking bracket 5, the strengthening component 53 comprises a moving seat 531 arranged in the strengthening sliding rail 52, a limiting screw 532 matched with the docking bracket 5 is arranged on the moving seat 531, a strengthening arm 533 is arranged on the moving seat 531, and a strengthening ring plate 534 sleeved on the telescopic moving arm 93 is arranged on the strengthening arm 533.

First, the entire apparatus completes the movement in the work area by the movement of the traveling frame 1. The walking frame 1 is provided with a walking assembly 11, so that the equipment can be easily moved to a required position.

The drive assembly is then mated with the docking assembly 31 through the docking plate 21 at the output. The docking assembly 31 is provided on the rotating spindle 3 and is connected to the output shaft of the drive assembly. The rotary spindle 3 is vertically arranged and can rotate up and down. The butt joint seat 4 is positioned on the walking frame 1 and used for stabilizing the connection relation among the butt joint support 5, the stabilizing support 8 and the walking frame 1.

The docking cradle 5 then builds up the main body cradle of the device by detachable connection with the docking station 4. The vertical support assemblies 6 are arranged in a plurality along the axial direction of the rotary main shaft 3 and can be detachably arranged on the butt joint bracket 5. The rotary spindle 3 is provided with a wire coil member 7 for loading a wire coil of a cable. The wire coil piece 7 is matched with the upper part of the vertical supporting component 6, so that a certain tension can be maintained for the cable wire during working.

The rotary spindle 3 is rotated with the wire disc 7 using a fixture as required. The stabilizing support 8 is detachably mounted on the docking station 4 to enhance the stability of the device. The steering assembly is arranged on the stable support 8 and cooperates with the winding and unwinding operations of the cable wires. The stabilizing component is arranged on the steering component to strengthen the connection relation between the steering component and the docking bracket 5, and the stability of the equipment is improved during operation.

In operation, the cable wire may be wound or coiled by rotating the spindle 3. The operator can make the cable wire receive and release fast, effectively through the control of equipment. When the work is finished, the device can easily move to the next work area.

In a word, the working principle of the electric wire winding and unwinding device can ensure that the cable wire can not be entangled or cut off when in work, an operator can perform winding and unwinding operation according to the needs, and the device can be moved to the next working area, so that the electric wire winding and unwinding device has high practicability and stability.

The technical features of the present utility model that are not described in the present utility model may be implemented by or using the prior art, and are not described in detail herein, but the above description is not intended to limit the present utility model, and the present utility model is not limited to the above examples, but is also intended to be within the scope of the present utility model by those skilled in the art.

Claims (9)

1. An electric wire coiling and uncoiling device, which is characterized in that: the device comprises a walking frame (1), wherein a driving motor (2) is arranged on the walking frame (1), the axis of an output shaft of the driving motor (2) is vertically arranged, a butt joint disc (21) is arranged on the output shaft of the driving motor (2), the butt joint disc (21) is provided with a rotary main shaft (3), and a butt joint assembly (31) matched with the butt joint disc (21) is arranged at the bottom end of the rotary main shaft (3);

the walking frame is characterized in that a butt joint seat (4) is arranged at one side of the walking frame (1), a butt joint support (5) is arranged on the butt joint seat (4), a plurality of vertical supporting assemblies (6) matched with the rotating main shaft (3) are arranged on the butt joint support (5), the vertical supporting assemblies (6) are detachably connected with the butt joint support (5), a plurality of wire coil pieces (7) matched with the vertical supporting assemblies (6) are sleeved on the rotating main shaft (3), the wire coil is arranged on the wire coil pieces (7), and fasteners (71) matched with the rotating main shaft (3) are arranged on the wire coil pieces (7);

be provided with on docking station (4) with docking support (5) complex steady rest (8), just steady rest (8) be provided with a plurality of with drum spare (7) complex steering component (9), just be provided with on steady rest (8) with docking support (5) complex steady component (81).

2. An electric wire takeup and pay-off apparatus as set forth in claim 1, wherein: the butt joint assembly (31) comprises a connecting disc (311) arranged at the bottom end of the rotary main shaft (3), a connecting groove is formed in the connecting disc (311), a fastening unit (312) matched with the connecting disc (311) is arranged on the butt joint disc (21), and a connecting protrusion matched with the connecting groove is arranged on the butt joint disc (21).

3. An electric wire takeup and pay-off apparatus as set forth in claim 1, wherein: vertical rail (51) are vertically arranged on the butt joint support (5), vertical supporting component (6) include with vertical rail (51) sliding fit's sliding block (61), just be provided with stopper (62) on sliding block (61), just be provided with on stopper (62) with butt joint support (5) complex spacing screw (63), be provided with support arm (64) on stopper (62), the tip of the one end of support arm (64) is provided with the cover and establishes ring piece (65) on rotary spindle (3), just the top department of ring piece (65) be provided with wire coil piece (7) complex counter-rotating unit (66).

4. A wire takeup and pay-off apparatus as set forth in claim 3, wherein: the wire coil (7) comprises a first wire coil (72) and a second wire coil (73) which are oppositely arranged, the first wire coil (72) is matched with the vertical supporting assembly, the first wire coil (72) comprises a first annular plate (721) sleeved on the rotating main shaft (3), the first annular plate (721) is provided with a fastening annular seat (722) matched with the rotating main shaft (3), the fastening piece (71) is arranged on the fastening annular seat (722), the fastening annular seat (722) is provided with a first connecting cylinder (723) matched with the second wire coil (73), and the first connecting cylinder (723) is provided with a connecting tenon groove;

the second wire coil component (73) comprises a second annular plate (731) sleeved on the rotary main shaft (3), a second connecting cylinder (732) matched with the first connecting cylinder (723) is arranged on the second annular plate (731), and a link tenon block matched with the connecting tenon groove is arranged on the second connecting cylinder (732).

5. The wire takeup and pay-off apparatus according to claim 4, wherein: annular groove (651) has been seted up on the top surface of ring piece (65), counter unit (66) are including setting up rolling bearing (661) in annular groove (651), just the inner circle of rolling bearing (661) with ring piece (65) are connected, just the top department of rolling bearing (661) is provided with connection annular plate (662), connection annular plate (662) are provided with the lug, be provided with on the bottom surface of first annular plate (721) with lug complex recess.

6. An electric wire takeup and pay-off apparatus as set forth in claim 1, wherein: a limiting slot matched with the stable support (8) is formed in the butt joint seat (4), the butt joint seat (4) is detachably connected with the butt joint support (5), and the butt joint support (5) is located between the stable support (8) and the rotating main shaft (3); the walking frame (1) comprises a rectangular frame, a walking assembly (11) is arranged on the rectangular frame, the driving motor (2) is located at one end of the rectangular frame, and the stable support (8) is located at the other end of the rectangular frame.

7. The wire takeup and pay-off apparatus according to claim 6, wherein: the utility model provides a firm support (8) includes the rectangle frame, just be provided with on the rectangle frame with spacing slot complex inserted bar, be provided with the firm frame in the rectangle frame, firm subassembly (81) are including setting up firm seat on the firm frame, just be provided with firm screw rod (811) on the firm seat, just be provided with on docking support (5) with firm screw rod complex firm cover.

8. An electric wire takeup and pay-off apparatus as set forth in claim 1, wherein: the stable support (8) is vertically provided with a steering sliding rail (82) matched with the steering assembly, the steering assembly (9) comprises a sliding seat (91) arranged in the steering sliding rail (82), the sliding seat (91) is provided with a positioning screw (92) matched with the stable support (8), the sliding seat (91) is provided with a telescopic moving arm (93), and remove arm front end department and set up roating seat (94), just roating seat (94) set up pivot (95), be provided with pivot (95) complex locating lever on roating seat (94), just be provided with bogie (96) on pivot (95), just be provided with steering wheel (97) on bogie (96).

9. The wire takeup and pay-off apparatus according to claim 8, wherein: the utility model discloses a telescopic movable support, including butt joint support (5), butt joint support (5) are last be provided with steering assembly (9) complex is strong subassembly (53), vertical be provided with on butt joint support (5) with strong subassembly (53) complex is strong sliding rail (52), is strong subassembly (53) including setting up remove seat (531) in strong sliding rail (52), remove be provided with on seat (531) with butt joint support (5) complex limit screw rod (532), be provided with on remove seat (531) and strengthen arm (533), just be provided with the cover on the arm (533) and establish strong annular plate (534) on telescopic movable arm (93).