CN220766135U - Pneumatic safety device of wire frame for cable - Google Patents

Abstract

The application discloses pneumatic safety device of cable frame for cable, it includes spool, the jack-in groove has all been seted up to spool both sides, still include the fixed cover, slip subassembly, locating pin and spacing subassembly, the fixed cover includes first installation cover and second installation cover, the one end and the spool of first installation cover are connected, the first installation cover encloses into the chamber of sliding jointly with the inner chamber of second installation cover, the subassembly of sliding includes location plug block and slider, the one end of location plug block is inserted and is located in the jack-in groove, the locating pin sets up in the chamber of sliding, slider and location plug block are connected, spacing subassembly includes the mounting disc, slide board and actuating cylinder, the mounting disc is connected in the one end of second installation cover, first counterpoint hole has been seted up on the mounting disc, slide board sliding connection is on the mounting disc, the second counterpoint hole has been seted up on the sliding disc. The utility model has the effect of improving the stability of I-shaped wheel when the installation location.

Description

Pneumatic safety device of wire frame for cable

Technical Field

The application relates to the technical field of stranding machines, in particular to a pneumatic safety device of a wire frame for cables.

Background

A strander is a machine in which a plurality of wires are twisted into strands according to a certain twisting pitch and a twisting direction, and a wire frame is one of important components in the strander.

At present, chinese patent with publication number CN109132715a discloses a strander line frame, which comprises a frame body, the spool is installed through the shaft on the support body, the damping disc is installed on the shaft, one side that is located the spool on the support body is provided with the slide that plays the wire effect, and the opposite side that is located the spool on the support body is provided with first wire wheel, second wire wheel, first wire wheel is located the top of second wire wheel, and the periphery of damping disc is around the package has the damping area.

With respect to the related art, the inventor considers that the spool in the strander line frame is mounted on the frame body through the wheel shaft, and in the process of rotating the spool, the shaft body mounted in the spool can be separated from the spool under the action of centrifugal force along with the rotation of the spool, so that the spool is separated from the frame body, equipment is damaged, and meanwhile safety of workers is influenced.

Disclosure of Invention

In order to improve the stability of spool when the installation location, this application provides a pneumatic safety device of line frame for cable.

The application provides a pneumatic safety device of cable frame adopts following technical scheme:

the pneumatic safety device for the cable rack comprises a spool, plug grooves are formed in circle center positions of two sides of the spool, the pneumatic safety device further comprises a fixing sleeve, a sliding component, a locating pin and a limiting component, the fixing sleeve comprises a first installation sleeve and a second installation sleeve, a sliding through hole corresponding to the plug grooves is formed in the closed end of the first installation sleeve, one end of the sliding through hole is formed in the first installation sleeve and connected with the spool, a first flange is arranged at the opening end of the first installation sleeve, a communication port is formed in the closed end of the second installation sleeve, a second flange is arranged at the opening end of the second installation sleeve, the first flange and the second flange are connected, the first installation sleeve and an inner cavity of the second installation sleeve enclose a sliding cavity together, the sliding component comprises a locating plug block and a sliding piece, the positioning plug block is slidably connected in the sliding through hole, one end of the positioning plug block is inserted in the plug groove, the positioning pin is arranged in the sliding cavity, one end of the positioning pin is abutted against the positioning plug block, the other end of the positioning pin is flush with the plane where the communication port is located, the sliding piece is arranged in the fixed sleeve and is connected with the positioning plug block, a driving source for driving the sliding piece to slide is arranged on the fixed sleeve, the limiting assembly comprises a mounting disc, a sliding plate and a driving cylinder, the mounting disc is connected with one end, far away from the I-shaped wheel, of the second mounting sleeve, a first alignment hole corresponding to the communication port is formed in the mounting disc, the sliding plate is slidably connected on the mounting disc, a second alignment hole is formed in the sliding plate, when the sliding plate moves to a certain position, the first alignment hole corresponds to the second alignment hole in position.

By adopting the technical scheme, when the spool is fixed, the second alignment holes on the sliding plate and the first alignment holes on the mounting plate are staggered. The locating pin sets up in fixed cover, and the one end and the locating plug block butt of locating pin, the other end and the board butt of sliding. When the spool needs to be disassembled or replaced, the sliding plate is moved and the first alignment holes and the second alignment holes are aligned. The sliding piece moves towards the direction close to the second installation sleeve under the drive of the driving source, and the positioning plug block sliding piece enters the fixing sleeve and is separated from the plug groove on the spool under the drive of the positioning plug block sliding piece. The positioning plug block and the positioning pin move along with the sliding piece in the direction close to the second installation sleeve, one end of the positioning pin extends out of the fixed sleeve through the communication port, the first alignment hole and the second alignment hole, and the positioning pin is taken out of the fixed sleeve and replaced with the spool. Because the locating pin is limited in the fixed sleeve by the sliding plate and the locating plug-in block, the possibility that the spool is separated from the spool in the rotating process is reduced. Through mutually supporting of spool, fixed cover, slip subassembly, locating pin and spacing subassembly, realized dismantling stable connection to the spool, have the effect of improving the stability of spool when the installation location.

Optionally, the piece that slides includes a first section of thick bamboo, a second section of thick bamboo and the go-between that slides, a first section of thick bamboo that slides slide set up in the inner chamber of first installation cover, the location spliced block connect in one end of first installation cover, the go-between connect in on the outer rampart of a first section of thick bamboo that slides, the go-between set up in a first section of thick bamboo that slides is kept away from one end of spool, a second section of thick bamboo that slides connect in on the outer rampart of go-between, a second section of thick bamboo that slides set up in the go-between is close to one side of spool, the outer rampart of a second section of thick bamboo with the interior rampart sliding connection of second installation cover, a first ring flange, a second installation cover, a first section of thick bamboo that slides, a second and go-between enclose into the sealing ring chamber jointly, the drive source includes air supply and first pipe, the air supply with one end intercommunication of first pipe is connected, and the other end stretches into in the air-supply chamber.

Through adopting above-mentioned technical scheme, the air supply starts, and the air current gets into the sealing ring chamber through the gas-supply pipe in, and the second section of thick bamboo that slides laminating the interior annular wall of second installation cover, and the first section of thick bamboo that slides laminating the interior annular wall of first installation cover slides. The sliding piece moves towards the direction close to the second mounting sleeve under the driving of the air source, so that the automatic driving of the sliding piece is realized. The first sliding cylinder is attached to the first installation sleeve, the second sliding cylinder is attached to the second installation sleeve, driving guidance of the sliding piece is achieved, and stability of the sliding piece during movement is improved.

Optionally, a first sealing ring groove is formed in the outer ring wall of the first sliding cylinder, a second sealing ring groove is formed in the outer ring wall of the second sliding cylinder, and sealing elements are arranged in the first sealing ring groove and the second sealing ring groove.

Through adopting above-mentioned technical scheme, the gas tightness in sealing ring chamber has been improved in the setting of first sealing ring groove, second sealing ring groove and sealing member for the air supply can drive the slider steadily and remove in fixed cover.

Optionally, a second bearing is arranged in the second installation sleeve, the second bearing corresponds to the communication port, a second supporting cylinder is coaxially arranged at one end of the second bearing close to the first installation sleeve, the inner wall of the second supporting cylinder is in fit with the positioning pin, a first supporting cylinder is arranged at one end of the positioning plug block close to the second installation sleeve, the first supporting cylinder is coaxially arranged relative to the second supporting cylinder, the diameter of the first supporting cylinder is larger than that of the second supporting cylinder, a first reset spring is arranged between the first supporting cylinder and the second supporting cylinder, one end of the first reset spring is in fit with the positioning plug block, and the other end of the first reset spring is in fit with the second bearing.

By adopting the technical scheme, when the positioning plug block moves towards the direction close to the second mounting sleeve under the action of the air source, the first reset spring is pressed to shorten the accumulated elastic potential energy. When the locating pin is taken out and ventilation of the sealing ring cavity is stopped, the first reset spring stretches, and the sliding piece and the locating plug block move reversely under the action of the first reset spring to realize automatic reset. The first supporting cylinder limits and guides the positioning pin, and meanwhile, the first return spring is prevented from being damaged by direct contact friction with the positioning pin. The arrangement of the second bearing realizes the rotary connection of the locating pin and the second mounting sleeve.

Optionally, a first bearing is connected in the first installation sleeve, an outer annular wall of the first bearing is connected with an inner annular wall of the first installation sleeve, and the inner annular wall of the first bearing is sleeved on the outer annular wall of the first support cylinder.

Through adopting above-mentioned technical scheme, the setting of first bearing has realized that first installation cover is connected with the rotation of first support section of thick bamboo, has also realized simultaneously the location to first support section of thick bamboo in first installation cover.

Optionally, the limiting component further comprises a driving cylinder, the driving cylinder is in sliding connection with the sliding plate, a second air pipe is connected to the driving cylinder, and the second air pipe is connected with the air source in a communicating mode.

Through adopting above-mentioned technical scheme, drive cylinder passes through the second gas-supply pipe and is connected with the air supply, and the output shaft drive slip board of drive cylinder slides on the mounting disc, has realized the automatic drive to the slip board.

Optionally, the mounting plate is last to have seted up the groove that slides, slide the board slide set up in the groove that slides, slide the board keep away from one side of actuating cylinder is connected with the extension rod, the extension rod is kept away from slide the one end of board and be connected with second reset spring, the other end of second reset spring with the mounting plate is connected, under the natural state, first counterpoint hole with the second counterpoint hole is in the position is crisscross under the effect of second reset spring.

Through adopting above-mentioned technical scheme, when needs take out the locating pin from fixed cover, the drive cylinder drives the slip board and slides in the groove that slides under the effect of air supply, until first locating hole and second locating hole position correspond. The second reset spring stretches and accumulates elastic potential energy under the action of the stretching rod, when the air source stops driving the driving air cylinder, the second reset spring shortens and releases the elastic potential energy, the sliding plate slides in the sliding groove under the action of the second reset spring and achieves automatic reset, the positions of the first positioning hole and the second positioning hole are staggered again, and the possibility that the positioning pin is separated from the fixing sleeve is reduced.

Optionally, the second air pipe is connected to the pipe section of the first air pipe, and an electromagnetic valve is arranged on the first air pipe.

By adopting the technical scheme, when the locating pin is taken out of the fixed sleeve, the electromagnetic valve is in a closed state, and the air source drives the sliding plate to slide. When the first alignment hole corresponds to the second alignment hole, the electromagnetic valve is automatically opened, air flow enters the sealing ring cavity through the first air pipe to drive the sliding piece to slide in the fixed sleeve, and one end of the positioning pin is pushed out of the fixed sleeve under the pushing of the sliding piece. By controlling the electromagnetic valve, the sliding plate and the locating pin are prevented from moving simultaneously, so that the end part of the locating pin is interfered with the sliding plate when the first locating hole does not correspond to the second locating hole.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through the mutual matching of the spool, the fixed sleeve, the sliding component, the locating pin and the limiting component, the detachable stable connection of the spool is realized, and the effect of improving the stability of the spool during installation and location is achieved;

2. the arrangement of the first sealing ring groove, the second sealing ring groove and the sealing piece improves the air tightness of the sealing ring cavity, so that the air source can stably drive the sliding piece to move in the fixed sleeve;

3. by controlling the electromagnetic valve, interference caused by simultaneous movement of the sliding plate and the positioning pin is avoided.

Drawings

Fig. 1 is a schematic structural diagram of a pneumatic safety device for a cable rack according to an embodiment of the present application.

Fig. 2 is a partial cross-sectional view of an embodiment of the present application for embodying the internal structure of a retaining sleeve.

Fig. 3 is an enlarged view of a portion a in fig. 2.

Fig. 4 is an enlarged view of a portion B in fig. 2.

Fig. 5 is an enlarged view of a portion C in fig. 2.

Reference numerals illustrate: 1. i-shaped wheel; 011. a plug-in groove; 2. a fixed sleeve; 21. a first mounting sleeve; 211. a sliding through hole; 22. a second mounting sleeve; 221. a communication port; 3. a positioning pin; 4. a slip assembly; 41. positioning the plug block; 411. a positioning groove; 42. a sliding member; 421. a first slipping cylinder; 422. a second slipping cylinder; 423. connecting the annular plates; 424. a first seal ring groove; 425. a second seal ring groove; 5. a limit component; 51. a mounting plate; 52. a slip plate; 53. a driving cylinder; 54. a stretching rod; 55. a second return spring; 56. a limiting plate; 6. a wire frame; 7. a first flange; 8. a second flange; 9. installing a ring plate; 10. a connecting piece; 101. a connecting block; 102. a connecting sleeve; 103. a connecting bolt; 11. a seal ring; 12. a seal ring cavity; 13. a first support cylinder; 14. a first bearing; 15. a second bearing; 16. a second support cylinder; 17. a first return spring; 18. a first alignment hole; 19. a slip groove; 20. a second alignment hole; 23. a third alignment hole; 24. stretching a plate; 25. a gas source; 26. a first gas pipe; 27. a second gas pipe; 28. a solenoid valve.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-5. The embodiment of the application provides a pneumatic safety device of cable frame for cable, it has the effect that improves spool 1 stability when the installation location.

Referring to fig. 1-3, a pneumatic safety device for a cable rack comprises a spool 1, a fixed sleeve 2, a locating pin 3, a sliding component 4, a limiting component 5 and a cable rack 6. The center positions of the two opposite sides of the spool 1 are provided with inserting grooves 011. The fixed sleeve 2 is disposed at one side of the spool 1, and the fixed sleeve 2 includes a first mounting sleeve 21 and a second mounting sleeve 22. The circle center position of the closed end of the first installation sleeve 21 is provided with a sliding through hole 211, and the outer annular wall of the open end of the first installation sleeve 21 is provided with a first flange 7.

Referring to fig. 2-4, a communication port 221 is formed in the center of the closed end of the second mounting sleeve 22, and a second flange 8 is disposed on the outer annular wall of the open end of the second mounting sleeve 22. The first mounting sleeve 21 and the second mounting sleeve 22 are connected through the first flange 7 and the second flange 8, and the first mounting sleeve 21 and the second mounting sleeve 22 jointly enclose a sliding cavity. The outer annular wall of the first mounting sleeve 21 far away from the first flange plate 7 is fixedly connected with a mounting annular plate 9, and the mounting annular plate 9 is connected with one side of the spool 1 through a connecting piece 10. The insertion grooves 011, the communication ports 221, and the central axes of the slip through holes 211 are arranged in line.

Referring to fig. 2 and 3, the sliding assembly 4 includes a positioning plug block 41 and a sliding member 42, the positioning plug block 41 is slidably connected in the sliding through hole 211, and one end of the positioning plug block 41 extends out of the first mounting sleeve 21 and is embedded in the insertion groove 011 of the spool 1. The sliding member 42 is slidably disposed in the fixed sleeve 2, and the sliding member 42 includes a first sliding cylinder 421, a second sliding cylinder 422, and a connection ring 423. The first sliding cylinder 421 is slidably disposed in the first mounting sleeve 21, and an outer annular wall of the first sliding cylinder 421 is slidably attached to an inner annular wall of the first mounting sleeve 21. One end of the first sliding cylinder 421 is connected with one end of the positioning plug block 41 located in the first mounting sleeve 21, the connecting ring plate 423 is fixedly arranged on the outer ring wall of one end of the first sliding cylinder 421 far away from the spool 1, the second sliding cylinder 422 is fixedly arranged on one side of the connecting ring plate 423 close to the spool 1, and the outer ring wall of the second sliding cylinder 422 is in sliding fit with the inner ring wall of the second mounting sleeve 22.

Referring to fig. 4, a first sealing ring groove 424 is formed in the outer circumferential wall of the first sliding cylinder 421, a second sealing ring groove 425 is formed in the outer circumferential wall of the second sliding cylinder 422, and sealing rings 11 are embedded in the first sealing ring groove 424 and the second sealing ring groove 425. The first sliding cylinder 421, the second sliding cylinder 422, the connecting ring plate 423, the second mounting sleeve 22, and the first flange 7 together define the seal ring cavity 12.

Referring to fig. 2 to 4, the positioning pin 3 is disposed in the fixing sleeve 2, and a positioning slot 411 is formed in a side of the positioning plug block 41 facing away from the spool 1. One end of the positioning pin 3 is embedded in the positioning slot 411, and the other end of the positioning pin 3 is flush with the end surface of the second mounting sleeve 22 provided with the communication port 221. The side of the positioning plug-in block 41, which is away from the spool 1, is provided with a first support cylinder 13, and a first bearing 14 is embedded between the outer annular wall of the first support cylinder 13 and the inner annular wall of the first mounting sleeve 21. The bottom end of the first support cylinder 13 is spaced from the first mounting sleeve 21. The second mounting sleeve 22 is provided with a second bearing 15 on the inner wall of the communication port 221, the second bearing 15 is coaxially arranged with the communication port 221, and one end of the second bearing 15, which is close to the first mounting sleeve 21, is connected with a second supporting cylinder 16. The diameter of the first supporting cylinder 13 is larger than that of the second supporting cylinder 16, the second supporting cylinder 16 and the first supporting cylinder 13 are coaxially arranged, a gap is reserved between the top end of the second supporting cylinder 16 and the first mounting sleeve 21, and the inner annular wall of the second supporting cylinder 16 is attached to the positioning pin 3.

Referring to fig. 3 and 4, a first return spring 17 is disposed between the first support cylinder 13 and the second support cylinder 16, and in a natural state, one end of the first return spring 17 abuts against a positioning plug block 41, the other end abuts against an inner wall of the second mounting sleeve 22 away from the first mounting sleeve 21, and the positioning plug block 41 is embedded in a plug groove 011 under the action of the first return spring 17.

Referring to fig. 1, 2 and 4, the limiting assembly 5 is disposed at an end of the second mounting sleeve 22 remote from the spool 1, and the limiting assembly 5 includes a mounting plate 51, a sliding plate 52, a driving cylinder 53, a tension rod 54, a second return spring 55 and a limiting plate 56. The mounting plate 51 is connected to the outer wall of the second mounting sleeve 22 far from the first mounting sleeve 21, and the mounting plate 51 is provided with a first alignment hole 18 corresponding to the communication port 221 on the second mounting sleeve 22. The side of the mounting plate 51 far away from the second mounting sleeve 22 is provided with a sliding groove 19 along the diameter direction, a sliding plate 52 is slidably connected in the sliding groove 19, and the sliding plate 52 is provided with a second alignment hole 20. When the sliding plate 52 slides in the sliding groove 19 to a certain position, the first alignment hole 18 corresponds to the second alignment hole 20 in position. The limiting plate 56 is connected to a side of the mounting plate 51 away from the second mounting sleeve 22 and is used for preventing the sliding plate 52 from being separated from the sliding groove 19, and the limiting plate 56 is provided with a third alignment hole 23 corresponding to the first alignment hole 18.

Referring to fig. 1 and 4, a driving cylinder 53 is connected to the mounting plate 51, and an output shaft of the driving cylinder 53 is disposed along a length direction of the sliding groove 19 and connected to one side of the sliding plate 52. Two stretching rods 54 are fixedly connected in parallel to one side of the sliding plate 52 far away from the driving cylinder 53, and the two stretching rods 54 are arranged along the length direction of the sliding groove 19. A tension plate 24 is connected between the two tension rods 54, and one end of a second return spring 55 is connected to the tension plate 24 and the other end is connected to the mounting plate 51. In a natural state, the second alignment hole 20 on the sliding plate 52 is offset from the first alignment hole 18 on the mounting plate 51 under the action of the second return spring 55.

Referring to fig. 1-3, a spool 6 is connected to the mounting plate 51, and an air source 25 is provided on the spool 6. The air source 25 is connected with a first air pipe 26 in a communicating way, and one end of the first air pipe 26 far away from the air source 25 penetrates through the first flange 7 and stretches into the sealing ring cavity 12. The first air pipe 26 is communicated and connected with a second air pipe 27, and one end, far away from the first air pipe 26, of the second air pipe 27 is communicated and connected with the driving cylinder 53. The first air pipe 26 is provided with a solenoid valve 28, and the solenoid valve 28 is arranged on a pipe section of the first air pipe 26 close to the first mounting sleeve 21.

Referring to fig. 1-3, when spool 1 is secured, second alignment holes 20 on slip plate 52 are staggered from first alignment holes 18 on mounting plate 51. The locating pin 3 is located in the sliding cavity, one end of the locating pin 3 is in plug-in fit with the locating slot 411 of the locating plug-in block 41, and the other end of the locating pin is in butt joint with the sliding plate 52. One end of the positioning plug-in block 41 extends out of the fixing sleeve 2 under the combined action of the first reset spring 17 and the positioning pin 3 and is embedded in the plug-in groove 011 of the spool 1, so that the spool 1 is connected. The second support cylinder 16 supports the positioning pin 3, so that stability of the positioning pin 3 in the moving process is improved. The sliding plate 52 limits the position of the positioning pin 3 in the fixed sleeve 2, so that the possibility that the positioning pin 3 is separated from the fixed sleeve 2 under the action of centrifugal force in the rotation process of the device is reduced, and the connection stability of the spool 1 is improved.

Referring to fig. 2 to 4, when the spool 1 needs to be disassembled and replaced, the air source 25 delivers air through the second air pipe 27 and the box driving air cylinder 53, the driving air cylinder 53 drives the sliding plate 52 to slide in the sliding groove 19 until the second alignment hole 20 on the sliding plate 52 corresponds to the position of the communication hole 221 on the second mounting sleeve 22, and at this time, the second return spring 55 stretches and accumulates elastic potential energy under the pulling of the stretching rod 54 and the stretching plate 24. After the first alignment hole 18 and the second alignment hole 20 are aligned, the solenoid valve 28 is opened, the air source 25 is ventilated into the seal ring cavity 12 through the first air pipe 26, and the sliding member 42 and the positioning plug 41 move in the direction approaching the second mounting sleeve 22 in the fixing sleeve 2. The end of the positioning plug-in block 41 is separated from the plug-in groove 011 of the spool 1, and the connection of the spool 1 is released. The first sliding cylinder 421 slides in the first mounting sleeve 21, the second sliding cylinder 422 slides in the second mounting sleeve 22, and the arrangement of the first sealing ring groove 424, the second sealing ring groove 425 and the sealing ring 11 improves the tightness of the sealing ring cavity 12, so that the air source 25 can stably drive the sliding member 42.

Referring to fig. 1, 3 and 4, the positioning pin 3 is driven by the positioning plug block 41 to move in a direction approaching the second mounting sleeve 22, and one end of the positioning pin 3 extends out of the fixing sleeve 2 through the communication port 221, the first alignment hole 18, the second alignment hole 20 and the third alignment hole 23, so that an operator can conveniently take out the positioning pin. At the same time, the first return spring 17 shortens the accumulated elastic potential energy under the pushing of the positioning plug-in block 41. After the detachment of the positioning pin 3 is completed, the air supply 25 stops the ventilation of the first air delivery pipe 26 and the second air delivery pipe 27.

Referring to fig. 1 and 4, the driving cylinder 53 stops pushing the sliding plate 52, the second return spring 55 shortens to reset the sliding plate 52, and the first alignment hole 18 is offset from the second alignment hole 20 again.

Referring to fig. 2 and 3, at the same time, the air source 25 stops applying pressure to the slider 42, the first return spring 17 stretches and pushes the slider 42 toward the direction approaching the first mounting sleeve 21, so that automatic return of the slider 42 is achieved, and the positioning plug block 41 is re-embedded in the plug groove 011 under the action of the first return spring 17. The arrangement of the first bearing 14 enables a rotational connection of the first support cylinder 13 with the first slide cylinder 421 and the arrangement of the second bearing 15 enables a rotational connection of the second support cylinder 16 with the second mounting sleeve 22.

Referring to fig. 2 and 5, the mounting ring plate 9 is connected to one side of the spool 1 through a connecting piece 10, the connecting piece 10 includes a connecting block 101 and a connecting sleeve 102, the connecting block 101 is fixedly connected to one side of the spool 1 close to the mounting ring plate 9, and the connecting sleeve 102 is fixedly connected to one side of the mounting ring plate 9 close to the spool 1. The connecting sleeve 102 corresponds to the connecting block 101 in position, the connecting block 101 is inserted into the connecting sleeve 102, the mounting ring plate 9 is connected with the connecting bolt 103 in a threaded mode, the connecting bolt 103 penetrates through the connecting sleeve 102 and is connected with the connecting block 101 in a threaded mode, and the spool 1 is detachably connected with the mounting ring plate 9.

The implementation principle of the pneumatic safety device of the cable rack in the embodiment of the application is as follows: when the spool 1 needs to be disassembled and replaced, the driving cylinder 53 drives the sliding plate 52 to slide in the sliding groove 19 until the second alignment hole 20 on the sliding plate 52 corresponds to the position of the communication port 221 on the second mounting sleeve 22, and at this time, the second return spring 55 stretches. The solenoid valve 28 is opened and the air supply 25 is vented into the seal ring cavity 12 and the slider 42 and the locating plug 41 are moved in a direction toward the second mounting sleeve 22. The positioning plug-in block 41 is disengaged from the plug-in groove 011, and the connection to the spool 1 is released. One end of the positioning pin 3 extends out of the fixing sleeve 2 through the communication port 221, the first alignment hole 18, the second alignment hole 20 and the third alignment hole 23, so that an operator can take the positioning pin out conveniently. At the same time, the first return spring 17 shortens the accumulated elastic potential energy.

The driving cylinder 53 stops pushing the sliding plate 52, and the second return spring 55 effects a return of the sliding plate 52. At the same time, the air source 25 stops applying pressure to the slider 42, the first return spring 17 achieves automatic return to the slider 42, and the positioning plug block 41 is re-embedded in the plug slot 011 under the action of the first return spring 17.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (8)

1. The utility model provides a pneumatic safety device of line frame for cable, includes spool (1), spliced groove (011), its characterized in that have all been seted up to the centre of a circle position of spool (1) both sides: the sliding assembly comprises a positioning pin (41) and is characterized by further comprising a fixing sleeve (2), a sliding assembly (4), a positioning pin (3) and a limiting assembly (5), wherein the fixing sleeve (2) comprises a first mounting sleeve (21) and a second mounting sleeve (22), a sliding through hole (211) corresponding to a plug-in groove (011) is formed in the closed end of the first mounting sleeve (21), one end of the sliding through hole (211) is connected with the spool (1), a first flange (7) is arranged at the open end of the first mounting sleeve (21), a communication port (221) is formed in the closed end of the second mounting sleeve (22), a second flange (8) is arranged at the open end of the second mounting sleeve (22), the first flange (7) and the second flange (8) are connected, the inner cavities of the first mounting sleeve (21) and the second mounting sleeve (22) form a sliding cavity together, the sliding assembly (4) comprises a positioning plug-in block (41) and a sliding plug-in block (42) and a sliding plug-in pin (41) are arranged in the positioning pin (41) and the positioning pin (41), the other end with the plane that intercommunication mouth (221) is located flushes, slider (42) set up in fixed cover (2) and with location spliced block (41) are connected, be provided with on fixed cover (2) and be used for the drive slider (42) gliding actuating source, spacing subassembly (5) are including mounting disc (51), slider (52) and actuating cylinder (53), mounting disc (51) connect in second mounting sleeve (22) keep away from the one end of I-shaped wheel (1), set up on mounting disc (51) with first counterpoint hole (18) that intercommunication mouth (221) correspond, slider (52) sliding connection in on mounting disc (51), set up second counterpoint hole (20) on slider (52), when slider (52) remove to certain position, first counterpoint hole (18) with second counterpoint hole (20) position corresponds.

2. The pneumatic cable spool safety device of claim 1 wherein: the utility model provides a gas transmission system, including first section of thick bamboo (421), second section of thick bamboo (422) and connection annular plate (423) slide including first section of thick bamboo (421), first section of thick bamboo (421) slide set up in the inner chamber of first installation cover (21), location plug block (41) connect in one end of first installation cover (21), connection annular plate (423) connect in on the outer annular wall of first section of thick bamboo (421) slide, connection annular plate (423) set up in first section of thick bamboo (421) are kept away from one end of I-shaped wheel (1), second section of thick bamboo (422) slide connect in on the outer annular wall of connection annular plate (423), second section of thick bamboo (422) set up in one side that connection annular plate (423) are close to I-shaped wheel (1), the outer annular wall of second section of thick bamboo (422) with the interior annular wall sliding connection of second installation cover (22), first flange (7), second installation cover (22), first section of thick bamboo (421), first section of thick bamboo (26) slide and first air supply (26) stretch into sealing ring (25) and one end in the joint seal ring (26) and the air supply (25) stretch into in the joint air supply (25).

3. The pneumatic cable spool safety device of claim 2 wherein: the outer annular wall of the first sliding cylinder (421) is provided with a first sealing annular groove (424), the outer annular wall of the second sliding cylinder (422) is provided with a second sealing annular groove (425), and sealing elements are arranged in the first sealing annular groove (424) and the second sealing annular groove (425).

4. The pneumatic cable spool safety device of claim 2 wherein: be provided with second bearing (15) in second installation cover (22), second bearing (15) intercommunication mouth (221) correspond the setting, second bearing (15) are close to the one end of first installation cover (21) is coaxial to be provided with second support section of thick bamboo (16), the inner wall of second support section of thick bamboo (16) with locating pin (3) laminating sets up, locating plug block (41) are close to the one end of second installation cover (22) is provided with first support section of thick bamboo (13), first support section of thick bamboo (13) are about second support section of thick bamboo (16) coaxial setting, the diameter of first support section of thick bamboo (13) is greater than the diameter of second support section of thick bamboo (16), first support section of thick bamboo (13) with be provided with first reset spring (17) between second support section of thick bamboo (16), the one end of first reset spring (17) with locating plug block (41) butt, the other end with second bearing (15) are tight.

5. The pneumatic cable spool safety device of claim 4 wherein: the first mounting sleeve (21) is internally connected with a first bearing (14), the outer annular wall of the first bearing (14) is connected with the inner annular wall of the first mounting sleeve (21), and the inner annular wall of the first bearing (14) is sleeved on the outer annular wall of the first supporting cylinder (13).

6. The pneumatic cable spool safety device of claim 2 wherein: the limiting assembly (5) further comprises a driving air cylinder (53), the driving air cylinder (53) is in sliding connection with the sliding plate (52), a second air pipe (27) is connected to the driving air cylinder (53), and the second air pipe (27) is communicated and connected with the air source (25).

7. The pneumatic cable spool safety device of claim 6 wherein: the utility model discloses a motor vehicle is characterized in that a sliding groove (19) has been seted up on mounting disc (51), sliding plate (52) slide set up in sliding groove (19), sliding plate (52) keep away from one side of driving cylinder (53) is connected with tensile pole (54), tensile pole (54) are kept away from one end of sliding plate (52) is connected with second reset spring (55), the other end of second reset spring (55) with mounting disc (51) are connected, under the natural state, first counterpoint hole (18) and second counterpoint hole (20) are in the position is crisscross under the effect of second reset spring (55).

8. The pneumatic cable spool safety device of claim 6 wherein: the second air pipe (27) is connected to the pipe section of the first air pipe (26), and an electromagnetic valve (28) is arranged on the first air pipe (26).