CN101920919B

CN101920919B - Lifting device of monitoring camera

Info

Publication number: CN101920919B
Application number: CN200910069282XA
Authority: CN
Inventors: 陈俊庆
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-06-16
Filing date: 2009-06-16
Publication date: 2012-11-28
Anticipated expiration: 2029-06-16
Also published as: CN101920919A

Abstract

The invention relates to a lifting device of a monitoring camera, which is used as a wire-control locking body fastened by a steel cable and deviously suspended at the head end of a high suspender, wherein the head of the high suspender is provided with the monitoring camera. The lifting device is formed by inversely inserting a top fastening barrel member fixed at the head end of the high suspender to a fastened member, wherein the bottom of the fastened member is provided with a terminal box, a fastened column tube tied with the steel cable passes through a vertical tube port in the center of the top of the terminal box, the periphery of the fastened column tube approaches to the preset height of the tube port and is isometrically and circularly provided with a plurality of catch lugs, a bulged part guided by the top surface of an oblique cone ring is formed at the periphery of the fastened column tube corresponding to a preset tube section between the terminal box and the catch lugs, the center of the top fastening barrel member is provided with a locking tube, tooth-crown lock barrels are formed at the pushing positions of the catch lugs in the locking tube when the fastened column tube is inversely inserted to the bottom, the tooth-crown lock barrels can be pushed to unidirectionally slide tooth by tooth by the catch lugs to result in the staggered switch of the locking and the unlocking of the catch lugs, and directional slide blocks corresponding to the oblique low position of the top surface of the oblique cone ring is protruded on the inner wall adjacent to the bottom tube port of the locking tube. People can repair the lifting device on the ground without climbing, therefore, the lifting device is safe in operation.

Description

The jacking system of monitoring camera

Technical field

The present invention relates to a kind of monitoring camera, relate in particular to a kind of jacking system of monitoring camera.

Background technology

If the other hypervelocity monitoring camera that makes high tower of high suspension rod equipment such as express highway will be to these equipment guarantees the time, must be dependent on the maintainer and climb the top in person; Just can touch these elements and carry out guarantee work; Though the iron tower that some easy-to-use hold is climbed is as setting up pedestal, the climbing process is still very time-consuming dangerous again, and the actual time of setting about guaranteeing to keep in good repair of output/input element is much more more than touching; The bar number that everyone each working day can guarantee to keep in good repair is very few; Not only efficient is low, and the maintenance cost that also makes whole section roadside set up high suspension rod equipment remains high, and more exists climbing and causes the unexpected safety problem of tumble injury accidentally.

Summary of the invention

Technical problem underlying to be solved by this invention is, overcomes the above-mentioned defective that prior art exists, and a kind of jacking system of monitoring camera is provided; The climbing of need not taking a lot of work; Just can spur element on ground and go up and down to guarantee to keep in good repair,, can improve the bar number that everyone each working day can guarantee to keep in good repair not because of climbing the safety hazard that causes tumble injury accidentally; Draw high guarantee efficient, and can save the permanent in the future guarantee expenditure burden of high suspension rod electrical equipment.

The technical solution adopted for the present invention to solve the technical problems is:

A kind of jacking system of monitoring camera is settled monitoring camera as height being hung club head, is hung in the sealed body of line traffic control that high suspension rod head end anchors with cable wire; It is characterized in that: its by one be fixed in high suspension rod head end top button barrier part, pour into a fastener and form, top button barrier part is to hang by one to lock that an end screw lock connects a socket tube and a pair of bullet ejector sleeve constitutes; This hangs the interlocking ring that the peripheral protrusion in the lock tube end can screw lock be gone into high suspension rod head end, and by be spirally connected under this interlocking hoop socket tube and this to playing ejector sleeve, make this socket tube facing to hanging the lock tube; The common interlocking pipe of forming top button barrier part central authorities, this fastener bottom is a connection box, and connection box top central authorities are perpendicular, and to stretch that the mouth of pipe wears be the fastening tube of cable wire; And closing on mouth of pipe predetermined altitude in the fastening tube periphery, an equidistance circular row number padlock projection is again in predetermined pipeline section periphery between the corresponding connection box of fastening tube and the padlock projection; Form the convex part of oblique cone top surface of ring guiding, these top button barrier part central authorities are provided with the interlocking pipe, the padlock projection pushing tow position when corresponding fastening tube will be inserted into the end in the interlocking pipe; Formation can receive the padlock projection to push away unidirectional slippage by tooth top, causes the locking of padlock projection and the staggered crown lock tube that switches of unblanking, and crown lock tube is formed by the solid welding that is nested of a ring, one first ratchet crown and one second ratchet crown; At the bottom of the tube ring, offer recessed embedding hole, the teeth point lateral deviation of the first ratchet crown and the second ratchet crown, and the number of teeth is for receiving padlock projection number twice; The ring diameter that the first ratchet crown and the second ratchet crown crown transverse tooth thickness surround be able to pass the fastening tube push pipe, but next tooth paddy inwall of the every tripping one tooth paddy of the second ratchet crown, offer supply the padlock projection run through into groove; The first ratchet crown is fallen lid be bonded to tube ring top, the second hook tooth official hats and canopies is fixed in a tube ring end, and the crown that makes the first ratchet crown and the second ratchet crown is relatively to the certain distance that also staggers partially; And those padlock projections just in time can paste along the first ratchet crown and the second ratchet crown; Move by tooth up and down and change card, anchored by the teeth breech lock, or jump out one of which groove unlocked; And at the tiltedly low position of the corresponding oblique cone top surface of ring of the contiguous bottom tube mouth of interlocking pipe inwall; Protrude directed slide block, make any plane rise fastening tube when pouring into the interlocking pipe towards drag-line, all can make the oblique cone top surface of ring receive directed slide block sliding derive positive fastening tube towards; Move top padlock projection again to and carry out locking; The climbing of need not taking a lot of work thus just can spur monitoring camera and go up and down to guarantee to keep in good repair, not because of climbing the safety problem that causes tumble injury accidentally on ground.

The jacking system of aforesaid monitoring camera, wherein connection box is pushed up corresponding fastening tube both sides equidistant position, and upwards drawdown goes out radius stay.

The jacking system of aforesaid monitoring camera, wherein those padlock projection upper and lower side points contract, and the cusp that point contracts squints with scheduled volume.

The jacking system of aforesaid monitoring camera, wherein straight flute is offered at the fastening tube tiltedly low position that bloats the conical ring end face again downwards.

The jacking system of aforesaid monitoring camera, what wherein fastening tube bloated the oblique cone top surface of ring holds the pipe face in addition, and several upper and lower sides of circular row are the straight raised line that contracts of point all.

The jacking system of aforesaid monitoring camera; Wherein the crown lock tube end, put in corresponding holder in the interlocking pipe; To a projecting inward restitope ring, these several convex clip pieces of restitope ring top surface of ring circular row are Duoed one times in crown lock tube base ring row than those convex clip pieces again; And can snap in the recessed embedding hole of convex clip piece, between this crown lock tube and interlocking pipe push pipe mouth inwall, insert and put spring in addition.

The jacking system of aforesaid monitoring camera, the tiltedly low position of the corresponding oblique cone top surface of ring of the contiguous bottom tube mouth of interlocking pipe inwall wherein, protrusion upper and lower side all point contracts, and width can slip into the directed slide block of straight flute.

The jacking system of aforesaid monitoring camera; Its ejector sleeve mouth of pipe of being hit by a bullet is facing to radius stay, and the coil tension spring of packing into earlier in the bullet ejector sleeve, reinstalls a linear bearing; Block the mouth of pipe by an interior snap ring again; Make linear bearing and coil tension spring can not eject the mouth of pipe by interior snap ring, and can receive the radius stay rod end upwards to get into linear bearing, the compression coil tension spring.

The jacking system of aforesaid monitoring camera, wherein socket tube closes on the drum outer wall of interlocking ring, and sheathed one is inverted the clamping connection frame ring of adaptor union.

The invention has the beneficial effects as follows; The climbing of need not taking a lot of work; Just can spur element on ground and go up and down to guarantee to keep in good repair,, can improve the bar number that everyone each working day can guarantee to keep in good repair not because of climbing the safety hazard that causes tumble injury accidentally; Draw high guarantee efficient, and can save the permanent in the future guarantee expenditure burden of high suspension rod electrical equipment.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention is further specified.

Fig. 1 is the high suspension rod scheme drawing of the jacking system of installing monitoring camera of the present invention.

Fig. 2 is a three-dimensional combination scheme drawing of the present invention.

Fig. 3 is a perspective exploded view of the present invention.

Fig. 4 is the decomposing schematic representation that crown shown in Figure 2 is locked tube.

Fig. 5 is the oblique schematic perspective view in crown lock tube top shown in Figure 2.

Fig. 6 faces upward oblique schematic perspective view for crown lock tube shown in Figure 2.

Fig. 7 is the rear view (RV) of fastening tube of the present invention.

Fig. 8 is an application drawing one of the present invention.

Fig. 9 is an application drawing two of the present invention.

Figure 10 is an application drawing three of the present invention.

Figure 11 is an application drawing four of the present invention.

Figure 11 A is the expansion scheme drawing of padlock projection shown in Figure 11 and the relative motion of crown lock tube.

Figure 12 is an application drawing five of the present invention.

Figure 12 A is the expansion scheme drawing of padlock projection shown in Figure 12 and the relative motion of crown lock tube.

Label declaration among the figure:

10.... high suspension rod

11.... cable wire

12.... transmission line

13.... stranded cable mechanism

14.... monitoring camera

15, the 16.... dead sheave

20.... the jacking system of monitoring camera

21.... top button barrier part

22.... hang the lock tube

22A.... interlocking ring

23.... socket tube

23A.... adaptor union

23B.... clamping connection frame ring

24,25.... bullet ejector sleeve

26.... interlocking pipe

26A.... directed slide block

27.... crown lock tube

27A, 27B, the recessed embedding of 27C.... hole

27D.... tube ring

27E.... the first ratchet crown

27F.... the second ratchet crown

27G, 27H, 27I, 27J.... groove

28.... restitope ring

28A, 28B.... convex clip piece

29A.... spring

30.... fastener

31.... image line, connection, power lead connection box

32.... fastening tube

32A, 32B, 32C, 32D.... padlock projection

32E.... oblique cone top surface of ring

32F, 32G.... guides lower inclined plane

32H, 32I, the straight raised line of 32J....

32K.... convex part

32L.... straight flute

33,34.... decides vertical rod

33A.... coil tension spring

33B.... linear bearing

33C.... interior snap ring

The specific embodiment

Consult Fig. 1, shown in Figure 2, the element 14 shown in those figure is that example is represented explanation with the high-flying highway monitoring device; Shown in those figure, can know that the jacking system 20 of this kind of the present invention monitoring camera is to be hung in high suspension rod 10 head ends with cable wire 11, the connection box 31 of laying video camera 14 is established in the bottom; As height being hung the video camera 14 that club head is settled, be hung in the sealed body that high suspension rod head end anchors with cable wire 11, and cable wire 11 can run through this bar 10 shafts; Open the transmission line 12 that these bar 10 inside wear partially, through dead sheave 15,16; Pass from these bar 10 substrates, dish is tied to the other stranded cable mechanism 13 that establishes of these bar 10 substrates.

And the detailed formation of the jacking system 20 of this kind of the present invention monitoring camera is as shown in Figure 3, and it is the top button barrier part 21 of high suspension rod 10 head ends shown in the figure before being fixed in by a screw lock, pours into 30 compositions of a fastener; These fastener 30 bottoms are a connection box 31, and connection box 31 top central authorities are perpendicular, and to stretch that the mouth of pipe wears be the fastening tube 32 of cable wire 11, and corresponding fastening tube 32 both sides equidistant positions in connection box 31 tops again, and upwards drawdown goes out radius stay 33; 34, and close on mouth of pipe predetermined altitude, an equidistance circular row number padlock projection 32A, 32B in fastening tube 32 peripheries; 32C, 32D, those padlock projections 32A, 32B; 32C, 32D upper and lower side point contracts, and the cusp that contracts of point squints with scheduled volume, again in fastening tube 32 corresponding connection boxes 31 and padlock projection 32A; 32B, 32C, predetermined pipeline section is peripheral between the 32D; Formation is by the convex part 32K of oblique cone top surface of ring 32E guiding, and the tiltedly low position of oblique cone top surface of ring 32E offers straight flute 32L again downwards, and can be again holds the pipe face in addition in what fastening tube 32 bloated oblique cone top surface of ring 32E; The all sharp straight raised line 32H that contracts of several upper and lower sides of circular row, 32I, 32J.

Can hang as for this top button barrier part 21 that lock tube 22 end screw locks connect a socket tube 23 and a pair of bullet ejector sleeve 24,25 constitutes by one, this hangs the peripheral protrusion in 22 ends of lock tube can screw lock go into before the interlocking ring 22A of high suspension rod 10 head ends shown in the figure, and by be spirally connected downwards socket tube 23 and this is to bullet ejector sleeve 24 of this ring 22A; 25, make this socket tube 23 facing to hanging lock tube 22, the common interlocking pipe 26 of forming top button barrier part 21 central authorities, the padlock projection 32A when corresponding fastening tube 32 will be inserted into the end in interlocking pipe 26; 32B, 32C, 32D pushing tow position, formation can receive padlock projection 32A; 32B, 32C, 32D pushes away unidirectional slippage by tooth top, causes padlock projection 32A; 32B, 32C, the 32D locking and the staggered crown lock tube 27 that switches of unblanking, and 27 ends of this crown lock tube, put in corresponding holder in this interlocking pipe 26; To a projecting inward restitope ring 28, this several convex clip piece of restitope ring 28 end face circular rows 28A, 28B is listed as than those convex clip pieces 28A in these crown lock tube 27 base rings again; Many one times of 28B, and can snap in convex clip piece 28A, the recessed embedding hole 27A of 28B, 27B; 27C between this crown lock tube 27 and interlocking pipe 26 push pipe mouth inwalls, can insert and put spring 29A again in addition, and other is at the tiltedly low position of the corresponding oblique cone top surface of ring of interlocking pipe 26 contiguous bottom tube mouth inwalls 32E; Protrusion upper and lower side all point contracts, and width can slip into the directed slide block 26A of straight flute 32L, and this is to playing ejector sleeve 24,25 mouths of pipe facing to trammel beam 33; 34, and the coil tension spring 33A that packs into earlier in the pipe, reinstall a linear bearing 33B; Block the mouth of pipe by an interior snap ring 33C again, make linear bearing 33B and coil tension spring 33A can not eject the mouth of pipe by interior snap ring 33C, and can receive trammel beam 33 rod ends upwards to get into linear bearing 33B; Compression coil tension spring 33A closes on the drum outer wall of interlocking ring 22A in socket tube 23 in addition, again can sheathed one be inverted the clamping connection frame ring 23B of adaptor union 23A.

The detailed formation of this crown lock tube 27, can be known shown in those figure to shown in Figure 6 by Fig. 4, and this crown lock tube 27 is formed by ring 27D, one first ratchet crown 27E and the one second ratchet crown 27F solid welding that is nested, and at the bottom of tube ring 27D, offers aforesaid recessed embedding hole 27A; 27B, 27C, the teeth point lateral deviation of the first ratchet crown 27E and the second ratchet crown 27F, and the number of teeth is that preceding figure receives padlock projection 32A, 32B; 32C, 32D number twice, first, second ratchet crown 27E, the ring diameter that the 27F transverse tooth thickness surrounds be able to pass fastening tube 32 push pipes, but next tooth paddy inwall of the every tripping one tooth paddy of the second ratchet crown 27F; Offer supply to receive padlock projection 32A, 32B, 32C, 32D run through into groove 27G, 27H; 27I, 27J falls to cover to be bonded to tube ring 27D top with the first ratchet crown 27E, and second ratchet crown 27F lid is fixed at the bottom of the ring 27D, and makes the crown of the first ratchet crown 27E and the second ratchet crown 27F; As shown in Figure 3 relatively to the certain distance (about 2mm) that also staggers partially, and said those padlock projections of Fig. 3 32A, 32B, 32C; The side-play amount that the cusp that 32D upper and lower side point contracts is scheduled to promptly is set in correspondence and makes those padlock projections 32A, 32B, 32C; 32D just in time can paste along first, second ratchet crown 27E, and the 27F flank moves by tooth up and down and changes card, anchored by the teeth breech lock; Or jump out one of which groove 27G, 27H, 27I, 27J unlocked.

In addition, can know from Fig. 7 that the oblique cone top surface of ring 32E top that this fastening tube 32 forms has only single oblique cusp, both sides all form guiding lower inclined plane 32F; 32G like Fig. 8 and shown in Figure 9, when pull-up fastening tube 32, rises fastening tube 32 and pours into when pushing up button barrier part 21; No matter from any towards near directed slide block 26A, all make one of which guiding lower

inclined plane

32F, 32G; Must receive directed slide block 26A pushed, produce to rise just changeing simultaneously or reverse push go back to correctly towards after, continue to draw high just making radius stay 33 again; 34 corresponding insertions play

ejector sleeves

24,25, form stably correct combine towards.

When fastening tube 32 soon to when position top, shown in figure 10, every padlock projection 32A on the fastening tube 32,32B can pass and its corresponding groove 27G up and down simultaneously; 27H gets in the crown lock tube 27, shown in Figure 11 and Figure 11 A, continues to move to the top and will make padlock projection 32A for another example, and 32B compresses the first ratchet crown 27E corresponding sides flank; Make crown lock tube 27 a whole rise and unilateral deflections, let recessed embedding hole 27A simultaneously, 27B, 27C lift away from convex clip piece 28A; 28B, up to padlock projection 32A, the 32B top end fastens the first ratchet crown 27E tooth paddy, till can't drawing again; One loose one's grip this moment, shown in Figure 12 and Figure 12 A, makes padlock projection 32A with regard to moment, and 32B weighs down the flank of the pressure promotion second ratchet crown 27E corresponding sides naturally; Force crown lock tube 27 integral body again unilateral deflection fall back, let padlock projection 32A, the 32B bob snaps into the second ratchet crown 27F and does not offer groove 27G, next tooth of 27H; Form folder holder fastening, fastening tube 32 is fixed with top button barrier part 21 fully combine, although be totally released the grasping to cable wire 11 this moment, not is cable wire 11 to be affixed in the stranded cable mechanism 13 shown in Figure 1 immediately; But fastening tube 32 only depends on padlock projection 32A, and 32B and second ratchet crown 27E holder card just can be fixed overall safety, do not worry drawing high on earth after; Because of moment the tying-up gesture change, it is sliding to produce the grasping pine, the danger that causes fastening tube 32 to crash rapidly, and when desiring to fall fastening tube 32 and looking into the video camera of repairing bottom it 14 (seeing also Fig. 1); Then be inverted to from Figure 12 to process shown in Figure 8, pulling makes padlock projection 32A on earth slightly down earlier; The 32B push-jump crown lock tube 27 that rises will withdraw from groove 27G, 27H automatically; Draw like a cork and fall fastening tube 32, conveniently look into output/input element 14 of repairing its bottom, and the climbing maintenance of need not requiring great effort in person.

When video camera 14 is installed, at first be linked to video camera 14 bottom of jacking system 20, rotate stranded cable mechanism 13 then, rete cord 11 pulling video cameras 14 are up moved, be locked on top button barrier part 21 until fastener 30, can make video camera 14 location hang.If when desiring to put down video camera 14 and doing guarantee, then, cable wire 11 spur once again as long as rotate stranded cable mechanism 13 again, can make fastener 30 break away from top button barrier parts 21, and together put down together with video camera 14, reach and exempt to climb and can guarantee to keep in good repair purpose.

The jacking system of this kind of the present invention monitoring camera reaches the climbing of need not taking a lot of work really, just can spur the effect that element goes up and down to guarantee to keep in good repair on ground, safety of operation.

The above; It only is preferred embodiment of the present invention; Be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs in the scope of technical scheme of the present invention any simple modification, equivalent variations and modification that above embodiment did.

In sum; The present invention is on structure design, use practicality and cost benefit; It is required to meet industry development fully, and the structure that is disclosed also is to have unprecedented innovation structure, has novelty, creativeness, practicality; The regulation that meets relevant patent of invention important document is so mention application in accordance with the law.

Claims

1. the jacking system of a monitoring camera is settled monitoring camera as height being hung club head, is hung in the sealed body of line traffic control that high suspension rod head end anchors with cable wire; It is characterized in that: its by one be fixed in high suspension rod head end top button barrier part, pour into a fastener and form, top button barrier part is to hang by one to lock that an end screw lock connects a socket tube and a pair of bullet ejector sleeve constitutes; This hangs the interlocking ring that the peripheral protrusion in the lock tube end can screw lock be gone into high suspension rod head end, and by be spirally connected under this interlocking hoop socket tube and this to playing ejector sleeve, make this socket tube facing to hanging the lock tube; The common interlocking pipe of forming top button barrier part central authorities, this fastener bottom is a connection box, and connection box top central authorities are perpendicular, and to stretch that the mouth of pipe wears be the fastening tube of cable wire; And closing on mouth of pipe predetermined altitude in the fastening tube periphery, an equidistance circular row number padlock projection is again in predetermined pipeline section periphery between the corresponding connection box of fastening tube and the padlock projection; Form the convex part of oblique cone top surface of ring guiding, these top button barrier part central authorities are provided with the interlocking pipe, the padlock projection pushing tow position when corresponding fastening tube will be inserted into the end in the interlocking pipe; Formation can receive the padlock projection to push away unidirectional slippage by tooth top, causes the locking of padlock projection and the staggered crown lock tube that switches of unblanking, and crown lock tube is formed by the solid welding that is nested of a ring, one first ratchet crown and one second ratchet crown; At the bottom of the tube ring, offer recessed embedding hole, the teeth point lateral deviation of the first ratchet crown and the second ratchet crown, and the number of teeth is for receiving padlock projection number twice; The ring diameter that the first ratchet crown and the second ratchet crown crown transverse tooth thickness surround be able to pass the fastening tube push pipe, but next tooth paddy inwall of the every tripping one tooth paddy of the second ratchet crown, offer supply the padlock projection run through into groove; The first ratchet crown is fallen to cover to be bonded to tube ring top; The second hook tooth official hats and canopies is fixed in a tube ring end, and the crown that makes the first ratchet crown and the second ratchet crown is relatively to the certain distance that also staggers partially, and those padlock projections just in time can paste along the first ratchet crown and the second ratchet crown; Move by tooth up and down and change card; Anchored by the teeth breech lock, or jump out one of which groove unlocked, and be close to the tiltedly low position of the corresponding oblique cone top surface of ring of bottom tube mouth inwall at the interlocking pipe; Protrude directed slide block; Make any plane rise fastening tube when pouring into the interlocking pipe towards drag-line, all can make the oblique cone top surface of ring receive directed slide block sliding derive positive fastening tube towards, move top padlock projection again to and carry out locking; The climbing of need not taking a lot of work thus just can spur monitoring camera and go up and down to guarantee to keep in good repair on ground.

2. the jacking system of monitoring camera according to claim 1, it is characterized in that: said connection box is pushed up corresponding fastening tube both sides equidistant position, and upwards drawdown goes out radius stay.

3. the jacking system of monitoring camera according to claim 1, it is characterized in that: said those padlock projection upper and lower side points contract, and the cusp that point contracts squints with scheduled volume.

4. the jacking system of monitoring camera according to claim 1 is characterized in that: said fastening tube bloats the tiltedly low position of conical ring end face and offers straight flute again downwards.

5. according to the jacking system of claim 1 or 4 described monitoring cameras, it is characterized in that: what said fastening tube bloated the oblique cone top surface of ring holds the pipe face in addition, and several upper and lower sides of circular row are the straight raised line that contracts of point all.

6. the jacking system of monitoring camera according to claim 1; It is characterized in that: the crown lock tube end, put in corresponding holder in the said interlocking pipe; To a projecting inward restitope ring, these several convex clip pieces of restitope ring top surface of ring circular row are Duoed one times in crown lock tube base ring row than those convex clip pieces again; And can snap in the recessed embedding hole of convex clip piece, between this crown lock tube and interlocking pipe push pipe mouth inwall, insert and put spring in addition.

7. the jacking system of monitoring camera according to claim 4 is characterized in that: the tiltedly low position of the corresponding oblique cone top surface of ring of the contiguous bottom tube mouth of said interlocking pipe inwall, protrusion upper and lower side all point contracts, and width can slip into the directed slide block of straight flute.

8. the jacking system of monitoring camera according to claim 1; It is characterized in that: the said bullet ejector sleeve mouth of pipe is facing to radius stay, and the coil tension spring of packing into earlier in the bullet ejector sleeve, reinstalls a linear bearing; Block the mouth of pipe by an interior snap ring again; Make linear bearing and coil tension spring can not eject the mouth of pipe by interior snap ring, and can receive the radius stay rod end upwards to get into linear bearing, the compression coil tension spring.

9. the jacking system of monitoring camera according to claim 1, it is characterized in that: said socket tube closes on the drum outer wall of interlocking ring, and sheathed one is inverted the clamping connection frame ring of adaptor union.