CN205298998U

CN205298998U - Supporting apparatus

Info

Publication number: CN205298998U
Application number: CN201520869797.9U
Authority: CN
Inventors: 于勇; 黄桂宏; 全伟
Original assignee: BEIJING TIANZE ELECTRIC POWER EQUIPMENT Co Ltd
Current assignee: Beijing Tianze Electric Power Group Co., Ltd.
Priority date: 2015-11-03
Filing date: 2015-11-03
Publication date: 2016-06-08
Anticipated expiration: 2025-11-03

Abstract

The utility model provides a supporting apparatus, including supporting seat and telescopic link, the telescopic link has first outer tube and first interior sleeve pipe, the first end of first outer tube is equipped with first spacing portion, the second end with the detachable connection of supporting seat, in first the first end position of sheathed tube in first outer tube is outer and stretch out first spacing portion, its second end position in in the first outer tube, the sleeve pipe can be followed in first the axial displacement of first outer tube so that the first end of sheathed tube is kept away from gradually or is close to in first first spacing portion, it is right that first spacing portion is used for the sleeve pipe carries on spacingly so that its first end is relative in first the rigidity of first spacing portion, and can relieve spacingly so that the sleeve pipe can be relative in first first outer tube removes. The utility model discloses a supporting apparatus can be to being provided lasting by the support and stable holding power when supporting the object.

Description

An a kind of support arrangement

Technical field

This utility model relates to a kind of support arrangement, particularly to an a kind of support arrangement for support hydraulic pressure bracket.

Background technology

High ferro contact network cantilever is mounted in pillar upper end for supporting and positioning device and contact suspension the structural device that the load of contact suspension is passed to pillar or other buildings. After porcelain vase breakage on fixing device bracket, can cause that bracket is sagging, make the tension force of contact net strengthen and the generation of short circuit or leaky can be caused. For ensureing the normal pass of train, it is necessary to the porcelain vase on bracket is replaced.

Bracket bolt pin, bolt and nut of clip with the use of being fixed on pillar, bracket originally experience downward gravity and contact net transmission tension force, these power are entirely with bolt pin for fulcrum. For preventing bolt pin because stress is overweight and lax or damages in prior art, all can adopt a support arrangement that bracket is applied support force, so that bolt pin is not by ambient pressure (except deadweight). But of the prior art support arrangement can not provide lasting and stable support force to bracket due to reasons in structure, fixes it addition, support direction, it is impossible to better meet and be actually needed.

Utility model content

Problem to be solved in the utility model is to provide a kind of support arrangement providing support force that can be lasting and stable.

In order to solve the problems referred to above, this utility model provides one support arrangement, including:

Supporting seat;

Expansion link, it has the first trocar sheath and the first inner sleeve, and the first end of described first trocar sheath is provided with the first limiting section, and the second end is detachable with described supporting seat to be connected; First end of described first inner sleeve is positioned at outside described first trocar sheath and stretches out described first limiting section, its second end is positioned at described first trocar sheath, described first inner sleeve can move axially so that the first end of described first inner sleeve is gradually distance from or near described first limiting section along described first trocar sheath, described first limiting section is for carrying out spacing to described first inner sleeve so that the position of relatively described first limiting section of its first end is fixed, and can release spacing so that described first inner sleeve can move relative to described first trocar sheath.

As preferably, described expansion link also includes the first connector being installed on the first end of described first inner sleeve and the second connector being installed in the second end of described first trocar sheath, when the second end of described first inner sleeve moves the second end to described first trocar sheath, second end of described first inner sleeve and described second connector lean, and described first connector is at least partially disposed at outside described first limiting section;

The outer wall of described first inner sleeve have multiple along its first axially arranged Access Division, described first limiting section include can along described first trocar sheath move radially for described first Access Division clamping or the second Access Division of separating, first extension and contraction control seat, by the first bolt stationary gland the first flexible pressure ring on described first extension and contraction control seat and be located at described first flexible between pressure ring and the first extension and contraction control seat for regulating the adjustment portion of described second position, Access Division, described first extension and contraction control seat has the centre bore connected with described first trocar sheath, described second Access Division is located between described adjustment portion and the first extension and contraction control seat,

First end of described first inner sleeve is provided with two first annular fins separately, when described first inner sleeve moves and is positioned at described first limiting section to two described first annular fins, described second Access Division is stuck in described in two between first annular fin to limit the position of described first inner sleeve.

As preferably, described first connector is cylindrical, and middle part has the second annular ridge for fastening with the first end of described first inner sleeve in it;

Described second connector is dumbbell shaped, and its one end deviating from described first inner sleeve is provided with the 3rd annular ridge for fastening with the second end of described first trocar sheath, is additionally provided with crashproof packing ring between described second connector and described first inner sleeve;

Described first Access Division is the first wedge-shaped slot being opened on described first inner sleeve excircle, and the angle of wedge of described first wedge-shaped slot is towards the first end of described first inner sleeve;

Described second Access Division is the multiple first flexible fixture block, described first flexible fixture block is provided with the first straight pin towards the one side of the described first flexible pressure ring, described first extension and contraction control seat has multiple the first mounting groove for installing each described first flexible fixture block respectively, each described first mounting groove is uncovered towards the side of described first inner sleeve, and the one side of the closed side of the described first corresponding described first mounting groove of flexible fixture block is provided with the spring abutted with described closed side;

Described adjustment portion is can the first extension and contraction control plate of relatively described first trocar sheath axial rotation, described first extension and contraction control plate has the through hole for described first inner sleeve traverse, multiple the first pilot holes supplying each described first straight pin to wear respectively and the second pilot hole worn for described first bolt, rotate described first extension and contraction control plate or move so that the first bolt described in when its first end is away from described first limiting section slides along described second pilot hole at described first inner sleeve, described first straight pin slides to drive the described first flexible fixture block to enable the described first flexible fixture block to be not provided with the side of spring and described first Access Division clamping or to separate along moving radially of described first inner sleeve along described first pilot hole.

As preferably, the described first flexible fixture block is not provided with the shape of the side of spring with described first wedge-shaped slot form fit can coordinate in described first wedge-shaped slot of insertion;

The outer rim of described first extension and contraction control plate protrudes described first extension and contraction control seat and the described first flexible pressure ring;

Multiple described mounting grooves are uniformly arranged along the outer rim of the centre bore of described first extension and contraction control seat;

Described first bolt is that multiple and along the endoporus of the described first flexible pressure ring outer rim arranges a circle, described second pilot hole and described first bolt one_to_one corresponding;

Described first pilot hole and the second pilot hole are the peripheral arc-shaped hole arranged along described through hole; Described first pilot hole has stub end and little head end, described first extension and contraction control plate rotate and drive described straight pin towards described little head end slide time, described first flexible fixture block along described first inner sleeve be moved radially outward with described first shackle portion from, and then enable described first inner sleeve to move relative to described first trocar sheath; When described first straight pin slides towards described stub end, the described first flexible fixture block along described first inner sleeve radially-inwardly move with described first Access Division clamping, and then make described first inner sleeve and described first trocar sheath be relatively fixed.

As preferably, described adjustment portion also include being located at described first flexible between pressure ring and the first extension and contraction control plate for the first torsion spring of the described first extension and contraction control plate that resets and the first guidance tape of annular of rotating for the described first extension and contraction control plate that leads, described first guidance tape coordinates in the through hole being located at described first extension and contraction control plate and reclines mutually with described first extension and contraction control seat.

As preferably, described supporting seat includes:

Base;

Pars contractilis, it is detachable with described base is connected, and described pars contractilis includes the second inner sleeve and the second trocar sheath, and the first end of described second trocar sheath is provided with the second limiting section, first end of described second inner sleeve is positioned at outside described second trocar sheath and stretches out described second limiting section to be connected by described second connector and described first trocar sheath are fixing, its second end is positioned at described second trocar sheath, described second inner sleeve can move axially so that the first end of described second inner sleeve is gradually distance from or near described second limiting section along described second trocar sheath, described second limiting section is for carrying out spacing to described second inner sleeve so that the position of relatively described second limiting section of its first end is fixed, and described second inner sleeve can release spacing so that can move relative to described second trocar sheath.

As preferably, being provided with the piston cylinder coaxial with described second trocar sheath in described second trocar sheath, the second end of described second inner sleeve is positioned at described piston cylinder can moving axially along described piston cylinder;

Annular fuel tank is formed between described second trocar sheath and described piston cylinder;

Described base is provided with the oil pump including oil sucting one-way valve and oil extraction check valve, is connected with the stampeding section for controlling described oil sucting one-way valve and oil extraction check valve is turned on and off outside described oil pump;

The first oil circuit being connected with described oil extraction check valve and the second oil circuit being connected with described oil sucting one-way valve it is provided with and for connecting the connecting pipeline of described first oil circuit and the second oil circuit in described base, described first oil circuit connects with described piston cylinder for making its moving axially along described piston cylinder to fuel feeding in described piston cylinder with the second inner sleeve described in pushing tow, and described second oil circuit connects with described fuel tank so that the hydraulic oil in described fuel tank enters in the first oil circuit through described second oil circuit;

Described base is provided with the adjustment valve for controlling described connecting pipeline switching.

As preferably, described pars contractilis is installed on described base by rotation section is detachable; Bottom end cover that described rotation section includes being installed in described second trocar sheath the second end, it is connected between described bottom end cover with described base and can the universal ball end of relative described base rotation and gland is outer at described universal ball end and the universal spherical cap that is connected with described base, described universal spherical cap and described universal ball end are additionally provided with universal ball cover towards between the side of described second trocar sheath, it is connected for elasticity between described universal ball cover with described universal spherical cap, between described universal ball end, described universal ball cover and described universal spherical cap, forms the chamber for oil storage;

Described universal ball end has nipple, is provided with the first branch road for connecting described first oil circuit and described piston cylinder in described universal ball end; It is provided with the second branch road for connecting described chamber and the second oil circuit in described universal ball end and is located in described universal ball end for connecting the Oil Guide pipeline of described fuel tank and described chamber;

Described bottom end cover has the flange for coordinating clamping with the second end of described second trocar sheath; Described bottom end cover is provided with for fixing the first connector being connected with described piston cylinder towards one end of described second trocar sheath the first end, and the other end of described bottom end cover is provided with the second connector for connecting with described nipple;

Described bottom end cover has gap at least provided with between one end of described first connector and described second trocar sheath, described bottom end cover is circumferentially with the first groove that a circle connects with described gap, what described universal ball end was positioned at described chamber is partially circumferentially provided with circle second groove, one end of described Oil Guide pipeline connects with described first groove, and the other end connects with described second groove.

As preferably, the outer wall of described second inner sleeve has multiple along its second axially arranged wedge-shaped slot; Described second limiting section is identical with described first limiting section structure, including the second flexible pressure ring, the second extension and contraction control plate, the second flexible fixture block, the second torsion spring, the second guidance tape, the second bolt and the second extension and contraction control seat, described second extension and contraction control seat forms the upper end cover of described supporting seat, and the part that wherein said upper end cover is positioned at outside described second trocar sheath is identical with described first extension and contraction control holder structure;

Being axially arranged with back-moving spring along it in described second inner sleeve, in described second inner sleeve, its end contiguous is provided with the 3rd annular ridge, and described back-moving spring one end is connected with described 3rd annular ridge, and the other end is connected with described bottom end cover;

Described second trocar sheath is provided with gas valve, and the second oil circuit being positioned at described base is provided with high-pressure overflow valve.

As preferably, also including support bar, one end that described support bar one end is positioned at outside described first limiting section with described first connector is connected, and the other end of described support bar is provided with bracket, wherein, described support bar is provided with anti-collision ring for the one end being connected with described first connector.

Having the beneficial effects that of of the present utility model support arrangement:

1, the first inner sleeve in expansion link and the first trocar sheath are coaxially disposed, and the first limiting section of spacing first inner sleeve position it is arranged in the first end of the first trocar sheath, the length that the first inner sleeve stretches out the first trocar sheath is made to control, namely can fix the position of relative first trocar sheath of the first inner sleeve, make when the first limiting section does not release the position-limiting action to the first inner sleeve, first inner sleeve at least can not to the first overcoat in-pipe, so that this Telescopic rod structure is stable, and stable support force can be provided when it is applied to object support.

2, the structural member in each inner sleeve, trocar sheath and limiting section is all detachable, and the convenient pars contractilis to expansion link and supporting seat overhauls and safeguards. additionally, second Access Division is set to circular wedge-shaped slot, flexible fixture block is arranged a circle along the outer rim of the through hole of upper end cover simultaneously, and be used for each flexible fixture block being shaped to, with the side of the second Access Division clamping, the shape can being meshed with the second Access Division, so when being intended to the first inner sleeve or the second inner sleeve are positioned, multiple flexible fixture blocks can stretch in annular wedge-shaped slot simultaneously and surround this inner sleeve, not only considerably increase clamping area, and make this inner sleeve be merely able to (when namely artificially not rotating extension and contraction control plate) in its natural state slide along the direction of the trocar sheath stretching out correspondence and can not reverse slide, to ensure that this support arrangement can provide stable support force.

3, hydraulic oil is injected by supporting seat between piston cylinder and the second trocar sheath so that the chamber between piston cylinder and the second trocar sheath forms fuel tank, it is additionally arranged oil pump and the first oil circuit connected with oil pump and the second oil circuit simultaneously, this makes supporting seat the second inner sleeve can be stretched out the length outside the second trocar sheath carry out trace adjustment by increasing or reduce the amount of the hydraulic oil flowed in piston cylinder, and support force that can also be extra to the second inner sleeve offer, the support performance making supporting seat is more stable.

4, the rotation section arranged between pars contractilis and base can enable pars contractilis entirety respect thereto rotate, and makes a support arrangement can adjust support angle according to actual needs, increases the motility of supporting seat, improves the adaptive capacity of a support arrangement.

Accompanying drawing explanation

Fig. 1 is the structural representation of of the present utility model support arrangement.

Fig. 2 is the structural representation of the expansion link in this utility model.

Fig. 3 is the decomposition chart of the expansion link in this utility model.

Fig. 4 is the sectional view of the expansion link in this utility model.

Fig. 5 is the structural representation of the extension and contraction control plate of the expansion link in this utility model.

Fig. 6 is the structural representation of the extension and contraction control seat of the expansion link in this utility model.

Fig. 7 is the structural representation of the flexible fixture block of the expansion link in this utility model.

Fig. 8 is the structural representation of the supporting seat in this utility model.

Fig. 9 is the structure sectional view of the supporting seat in this utility model.

Figure 10 is the part-structure sectional view of the supporting seat in this utility model.

Figure 11 is the structural perspective of the base of the supporting seat in this utility model.

Figure 12 is the part-structure sectional view of the oil pump of the supporting seat in this utility model.

Figure 13 is the structure sectional view of the universal ball cover of the supporting seat in this utility model.

Figure 14 is the structure sectional view of the universal spherical cap of the supporting seat in this utility model.

Figure 15 is the structure sectional view of the universal ball end of the supporting seat in this utility model.

Figure 16 is the structure sectional view of the bottom end cover of the supporting seat in this utility model.

Figure 17 is the structural representation of the upper end cover of the supporting seat in this utility model.

Figure 18 is the use state diagram of of the present utility model support arrangement.

The another kind that Figure 19 is of the present utility model support arrangement uses state diagram.

Accompanying drawing labelling:

1-expansion link; 2-supporting seat; 3-the first trocar sheath; 4-the first inner sleeve; 5-the first limiting section; The first annular fin of 6-; The crashproof packing ring of 7-first; 8-the first extension and contraction control seat; 9-first stretches pressure ring; 10-centre bore; 11-the first bolt; 12-the first Access Division; 13-first stretches fixture block; 14-the first spring; 15-the first extension and contraction control plate; 16-the first mounting groove; 17-the first straight pin; 18-through hole; 19-the first pilot hole; 20-the second pilot hole; 21-the first torsion spring; 22-the first guidance tape; 23-the second annular ridge; 24-stopper slot; 25-the first connector; 26-the second connector; 27-support bar; 28-bracket; The crashproof packing ring of 29-second; 30-base; 31-pars contractilis; 32-the second inner sleeve; 33-the second trocar sheath; 34-the second limiting section; 35-detent; 36-Plug Division; 37-the second spring; 38-piston cylinder; 39-stampeding section; 40-oil sucting one-way valve; 41-oil extraction check valve; 42-the first oil circuit; 43-the second oil circuit; 44-connecting pipeline; 45-regulates valve; 46-bottom end cover; 47-universal ball end; The universal ball cover of 48-; The universal spherical cap of 49-;50-annular step tread; 51-chamber; 52-the first branch road; 53-the second branch road; 54-Oil Guide pipeline; 55-nipple; 56-flange; 57-back-moving spring; 58-the first connector; 59-spacing preiection; 60-the second connector; 61-the first groove; 62-the second groove; 63-high-pressure overflow valve; 64-gas valve; 65-upper end cover; 66-the first spring screw plug; 67-the second spring screw plug; 68-union joint; 69-oil pump; 70-the 3rd annular ridge.

Detailed description of the invention

Below in conjunction with accompanying drawing, this utility model is described in detail.

As it is shown in figure 1, this utility model open one support arrangement, including supporting seat 2, expansion link 1 and support bar 27.

As shown in Figures 2 to 4, expansion link 1 includes the first mutually sheathed inner sleeve 4 and the first trocar sheath 3. Wherein, the first end of the first trocar sheath 3 is provided with the first limiting section 5 (upper end that this first end is in Fig. 1 the first trocar sheath 3, and in figure, the lower end of the first trocar sheath 3 is its second end); First end of the first inner sleeve 4 is positioned at outside the first trocar sheath 3 and stretches out the first limiting section 5, and its second end is positioned at the first trocar sheath 3 (the first end of the first inner sleeve 4 and the second end are corresponding with the first end of the first trocar sheath 3 and the second end respectively); This first inner sleeve 4 can moving axially so that its first end can be gradually distance from or move closer to the first limiting section 5 along the first trocar sheath 3, thus realize regulate the first inner sleeve 4 stretch out the length outside the first trocar sheath 3, make the adjustable length of whole expansion link 1. The setting of this first limiting section 5 is so that the position of relative first limiting section 5 of its first end is fixed for limiting the position of relative first trocar sheath 3 of the first inner sleeve 4, namely the first inner sleeve 4 can be fixed on this position by the first limiting section 5 after moving a segment distance, make it at least will not move (namely in the first trocar sheath 3, first inner sleeve 4 now can continue to stretch out the first trocar sheath 3, but will not move in the first trocar sheath 3); Meanwhile, what this first limiting section 5 can also release the first inner sleeve 4 is spacing so that it is can move relative to the first trocar sheath 3, or at least make the first inner sleeve 4 can move in the first trocar sheath 3. As it is shown on figure 3, in order to avoid the first inner sleeve 4 departs from the first trocar sheath 3 when stretching out the first trocar sheath 3, in the present embodiment, the second end of the first inner sleeve 4 is also interval with two first annular fins 6. When the second end of the first inner sleeve 4 slides in the first limiting section 5, the first Access Division 12 is stuck in limit the position of the first inner sleeve 4 between two first annular fins 6, is fixed in the first trocar sheath 3 by the second end of the first inner sleeve 4.

Further, first end of the first inner sleeve 4 is provided with the first connector 25, the second connector 26 it is provided with in second end of the first trocar sheath 3, the first connector 25 in the present embodiment is circular tube shaped, second connector 26 is in dumbbell shaped, and two connectors are each through in the same sleeve pipe being located in correspondence of the first bolt. When the second end of the first inner sleeve 4 moves the second end to the first trocar sheath 3, the second end of the first inner sleeve 4 and the second connector 26 lean to prevent the second end of the first inner sleeve 4 to be sliding out the first trocar sheath 3. First connector 25 is at least partially disposed at when the first inner sleeve 4 bounces back in the first trocar sheath 3 outside first limiting section 5, and to facilitate expansion link 1 to be connected with thing to be supported, and now the first inner sleeve 4 present position is its initial position.As shown in Figure 3, in the present embodiment, the middle part of the first connector 25 is provided with circle second annular ridge 23, when one end of the first connector 25 is fixed in the first inner sleeve 4, its second spacing fin 23 abuts with the end face of the first end of the first inner sleeve 4 so that the other end of the first connector 25 is positioned at outside the first limiting section, for being connected with support bar 27. Second connector 26 deviates from one end of the first inner sleeve 4 and is provided with the 3rd annular ridge 70, and when it is installed in the second end of the first trocar sheath 3, the second end of its 3rd annular ridge 70 and the first trocar sheath 3 fastens. This first connector 25 and the second connector 26 can be one-body molded with the first inner sleeve 4 and the first trocar sheath 3 respectively, it is possible to individually arrange and then pass through screw and be fixed together.

Preferably, continuing with Fig. 3 and Fig. 4, in order to avoid the first inner sleeve 4 fiercely collides with the second connector 26 when being reset to its initial position, the present embodiment is provided with the first crashproof packing ring 7 in the second connector 26 towards one end of the first inner sleeve 4 especially.

Further, the outer wall of the first inner sleeve 4 has multiple along its first axially arranged Access Division 12; First limiting section 5 include can along the first trocar sheath 3 move radially with can with the first Access Division 12 clamping or the second Access Division separated, the first extension and contraction control seat 8, by first bolt 11 stationary gland the first flexible pressure ring 9 on the first extension and contraction control seat 8 and be located at first flexible between pressure ring 9 and the first extension and contraction control seat 8 for regulating the adjustment portion of the second position, Access Division, second Access Division is located between adjustment portion and the first extension and contraction control seat 8, and wherein the first extension and contraction control seat 8 has the centre bore 10 through with the first trocar sheath 3. As shown in Figure 6, the cross section of the first extension and contraction control seat 8 in the present embodiment is circular, and its global shape is approximate in funnel-form. As shown in Figure 3 and Figure 4, the first flexible pressure ring 9 coordinates gland on one end that the first extension and contraction control seat 8 cross-sectional area is bigger by many first bolts 11. Wherein, above-mentioned many first bolts 11 arrange a circle along the outer rim of the endoporus of the first flexible pressure ring 9 respectively.

Specifically, continuing with Fig. 3, the first Access Division 12 is the wedge-shaped slot being opened on the first inner sleeve 4 excircle, and namely this wedge-shaped slot is annular. As shown in Figure 7, second Access Division is that the multiple first flexible fixture block 13 (only illustrates for three first flexible fixture blocks 13 in the present embodiment, certainly may also set up the more first flexible fixture block 13), this first flexible fixture block 13 is provided with straight pin 17 towards the side of the first flexible pressure ring 9, first extension and contraction control seat 8 has multiple the first mounting groove 16 (the first mounting groove 16 in the present embodiment is three, and stretch fixture block 13 one_to_one corresponding respectively with above three first) for installing each first flexible fixture block 13 respectively being radially arranged along the first inner sleeve 4. Each first mounting groove 16 is uncovered towards the side of the first inner sleeve 4, namely, first mounting groove 16 side connects with the centre bore 10 of the first extension and contraction control seat 18, and the one side of each first flexible corresponding first mounting groove 16 closed side (side relative with its open-position-side) of fixture block 13 is provided with the first spring 14. When the first flexible fixture block 13 is installed in the first mounting groove 16 of correspondence, its first spring 14 abuts with the closed side of the first mounting groove 16. When the first spring 14 is in compressive state, in first flexible fixture block 13 retraction the first mounting groove 16 not with wedge-shaped slot clamping; When the first spring 14 is driven the first flexible fixture block 13 to move so that its side being not provided with the first spring 14 is stretched out the first mounting groove 16 and then stretches in wedge-shaped slot to the direction near the first inner sleeve 4 by its elastic force effect, with wedge-shaped slot clamping.

The flexible fixture block 13 of in the present embodiment each first is provided with two the first springs 14 all side by side, certainly also can only arrange first spring 14, or arrange multiple first spring 14. The shape of the first mounting groove 16 preferably with the form fit of the first flexible fixture block 13 to avoid the first flexible fixture block 13 to rock displacement in the first mounting groove 16, affect it and contact clamping with wedge-shaped slot. As shown in Figure 6, the plurality of first mounting groove 16 is uniformly distributed along the outer rim of the centre bore 10 of the first extension and contraction control seat 8 respectively, so can make when the first flexible fixture block 13 is with one of them the wedge-shaped slot phase clamping on the first inner sleeve 4, multiple first flexible fixture block 13 can be close to this wedge-shaped slot of encirclement, so that this wedge-shaped slot circumference uniform force and then make the more firm of the two clamping.

Preferably, first flexible fixture block 13 be rectangular block, and each first flexible fixture block 13 is not provided with the shape of side of the first spring 14 and allows it to wedge-shaped slot form fit coordinate and insert in wedge-shaped slot, namely, make the first flexible fixture block 13 can be meshed with wedge-shaped slot, increase clamping dynamics. Wherein, the angle of wedge of above-mentioned wedge-shaped slot is towards the first end of the first inner sleeve 4, can only move outside the first trocar sheath 3 with the first inner sleeve 4 when not rotating the first extension and contraction control plate 15 (will be discussed in detail below), and can not move in the first trocar sheath 3, and then the expansion link 1 in this utility model is enable to provide when being applied in object support stably and lasting support force.

Further, adjustment portion is can around the first extension and contraction control plate 15 of the axial rotation of the first trocar sheath 3. As it is shown in figure 5, the first extension and contraction control plate 15 has the through hole 18 for the first inner sleeve 4 traverse, multiple the first pilot hole 19 supplying each first straight pin 17 stretching fixture block 13 to wear respectively and the second pilot hole 20 worn for the first bolt 11. The plurality of first pilot hole 19 position according to each straight pin 17 respectively is configured, multiple second pilot holes 20 distributing position according to the first bolt 11 respectively is configured, the quantity of the second pilot hole 20 in the present embodiment is equal with the quantity of the first bolt 11, and one_to_one corresponding is arranged, many first bolts 11 in certainly each second pilot hole 20, also can be worn. Rotate the first extension and contraction control plate 15 or at the first inner sleeve 4 to when moving outside the first trocar sheath 3, each first bolt 11 slides along the second corresponding pilot hole 20, each straight pin 17 along the first corresponding pilot hole 19 slide to drive each first flexible fixture block 13 along the first inner sleeve 4 move radially so that with corresponding wedge-shaped slot clamping or separate.

Shown in Fig. 5, the first pilot hole 19 and the second pilot hole 20 are the peripheral arc-shaped hole arranged along through hole 18. further, first pilot hole 19 is being radially gradually reduced at the first inner sleeve 4 from its one end to the direction away from the first inner sleeve 4, its two ends are made to form stub end and little head end respectively, namely this stub end and little head end radially have spacing at the first inner sleeve 4, this stub end the first inner sleeve 4 diametrically opposite little head end closer to the first inner sleeve 4 (as shown in Figure 5, the first pilot hole 19 in the present embodiment is approximately wedged hole, certainly, first pilot hole 19 is alternatively other shape, as long as its two ends radially have spacing the first extension and contraction control plate 15). when the first extension and contraction control plate 15 rotates and drives the first straight pin 17 to slide towards this little head end, along the first inner sleeve 4, first flexible fixture block 13 is moved radially outward to separate with the first Access Division 123 that (now the first flexible fixture block 13 extrudes the first spring 14, and the movement of the first flexible fixture block 13 can be passed through the artificial first extension and contraction control plate 15 that rotates and realize, or it is subject to the first the crowded of inner sleeve 4 that the direction being directed away from the first trocar sheath 3 is moved to push away realization), and then make the first inner sleeve 4 can move relative to the first trocar sheath 3, the first inner sleeve 4 is such as made to be reset to its initial position,And the first straight pin 17 under the elastic force effect of the first spring 14 towards this stub end slide time, first flexible fixture block 13 radially-inwardly moving so that (now the first spring 14 resets with the first Access Division 3 clamping along the first inner sleeve 4, if now the first extension and contraction control plate 15 does not have other External Force Actings, first extension and contraction control plate 15 can rotate (this first torsion spring 21 will introduce below) under the drive of the first torsion spring 21, so that the first inner sleeve 4 and the first trocar sheath 3 relative position are fixed. Namely the first pilot hole 19 is set between the form that its two ends and the first inner sleeve 4 spacing do not wait in order that can lead when the first inner sleeve 4 moves relative to the first trocar sheath 3 first flexible fixture block 13 to away from or move near the direction of the first inner sleeve 4. And the setting of the first extension and contraction control plate 15 is when being for being intended at the first inner sleeve 4 being in spacing state move in the first trocar sheath 3, can pass through the first extension and contraction control plate 15 self rotate to drive the straight pin 17 of each first flexible fixture block 13 to slide into the little head end of this first pilot hole 19 along the first corresponding pilot hole 19, make each first flexible fixture block 13 separate the mobile offer space thinking the first inner sleeve 4 with wedge-shaped slot.

The first extension and contraction control plate 15 in the present embodiment is circular slab (being certainly alternatively other shapes of plate), its radius is the radius of flexible pressure ring 9 and the first extension and contraction control seat 8 more than first, namely its outer rim protrudes the first flexible pressure ring 9 and the first extension and contraction control seat 8, in order to user rotates the first extension and contraction control plate 15.

Preferably, adjustment portion also include being located at first flexible between pressure ring 9 and the first extension and contraction control plate 15 for the first torsion spring 21 of the first extension and contraction control plate 15 that resets and in the first circular guidance tape 22. One end of this first torsion spring 21 is connected with the first flexible pressure ring 9, and the other end and the first extension and contraction control plate 15 connect, and specifically can be respectively provided with spliced eye on the first flexible pressure ring 9 and the first extension and contraction control plate 15. Specifically, when the first flexible fixture block 13 is with wedge-shaped slot clamping, the first torsion spring 21 is in just torsion state; Make the first flexible fixture block 13 to when moving in the first mounting groove 16 when rotating the first extension and contraction control plate 15, first spring 14 forced compression of the first flexible fixture block 13, first torsion spring 21 produces moment of torsion further, when cancelling the external force putting on the first extension and contraction control plate 15, first extension and contraction control plate 15 is rotated backward by the elastic force of the first torsion spring 21, and the first flexible fixture block 13 is moved to the direction away from the first mounting groove 16 by the restoring force of its first spring 14 simultaneously. First guidance tape 22 is located in the through hole 18 of the first extension and contraction control plate 15, and it is posted by the first extension and contraction control seat 8 towards the side of the first extension and contraction control seat 8, the setting of this first guidance tape 22 is the rotation for limiting the first inner sleeve 4, it is prevented that the first inner sleeve 4 shakes when moving along its axis. In order to better fix the first guidance tape 22, the present embodiment also arranges on the first extension and contraction control seat 8 circle stopper slot 24 for the annular of spacing first guidance tape 22 especially.

Preferably, as shown in Figure 1, support bar 27 in the present embodiment is cylindrical, and its one end is provided with the bracket (as bracketing high pressure bracket) for bracketing thing to be supported, and one end that the other end is positioned at outside the first limiting section 5 with the first connector 25 in expansion link 1 is connected by pin. Support bar 27 is close to its port for the one end being connected with expansion link 1 and is additionally provided with one second crashproof packing ring 29, to prevent one end that support bar 27 is not provided with bracket to be collided deformation.

During concrete operations expansion link 1, in conjunction with Fig. 1, Fig. 2, shown in Figure 17 and Figure 18, can pass through to pull support bar 27 (if without support bar 27, the first connector 25 can be pulled) to be extracted out by the first inner sleeve 4, in the process of withdrawing the first inner sleeve 4, the crowded thrust that the flexible fixture block 13 of the first of first limiting section 5 is first affected by the first inner sleeve 4 makes it move in the first mounting groove 16, namely the first flexible fixture block 13 moves to notch direction until separating with wedge-shaped slot towards the side of the first inner sleeve 4 gradually along the inclined-plane of wedge-shaped slot, now the first flexible fixture block 13 abuts towards the side of the first inner sleeve 4 and the outer surface of the first inner sleeve 4, namely abut with first inner sleeve 4 part between adjacent two wedge-shaped slots, along with the continuation of the first inner sleeve 4 moves, next wedge-shaped slot moves to and the open-position-side opposite position of each first mounting groove 16, now each first flexible fixture block 13 is moved until both are meshed to reach the effect of spacing first inner sleeve 4 to this wedge-shaped slot by the elastic force of its first spring 14. when making the first inner sleeve 4 being in spacing state to when moving in the first trocar sheath 3, such as, when needing the length that shortening the first inner sleeve 4 is positioned at outside the first trocar sheath 3, rotatable first extension and contraction control plate 15, it is passed to promote the first straight pin 17 to drive the first flexible fixture block 13 to move in the first mounting groove 16 along the slip of the first corresponding pilot hole 19, and then make each first flexible fixture block 13 separate with corresponding wedge-shaped slot, the mobile offer sliding space of the first inner sleeve 4 is provided. when the first inner sleeve 4 is adjusted to desired location place, unclamp the first extension and contraction control plate 15, first extension and contraction control plate 15 resets under the drive of the second spring 21, each first flexible fixture block 13 resets under the effect of its first spring 14 simultaneously, namely, wedge-shaped slot engagement with corresponding, completes the spacing of the first inner sleeve 4.

As shown in Figure 8, supporting seat 2 includes base 30 and the pars contractilis 31 that be connected detachable with base 30. This pars contractilis 31 includes the second mutually sheathed inner sleeve 32 and the second trocar sheath 33. Wherein, the first end of the second trocar sheath 33 is provided with and the second limiting section 34 (upper end that this first end is in figure the second trocar sheath 33, and in figure, the lower end of the second trocar sheath 33 is its second end); First end of the second inner sleeve 32 is positioned at outside the second trocar sheath 33 and stretches out the second limiting section 34, coordinates grafting for the second connector 26 with expansion link 1; Second end of the second inner sleeve 32 is positioned at the second trocar sheath 33 (the first end of the second inner sleeve 32 and the second end are corresponding with the first end of the second trocar sheath 33 and the second end respectively); This second inner sleeve 32 can move axially so that its first end can be gradually distance from or move closer to the second limiting section 34 along the second trocar sheath 33, realizes regulating the first trocar sheath 3 of being connected with the second inner sleeve 32 purpose highly thereby through regulating the length that the second inner sleeve 32 stretches out outside the second trocar sheath 33. The setting of this second limiting section 34 is so that the position of relative second limiting section 34 of its first end is fixed for limiting the position of relative second trocar sheath 33 of the second inner sleeve 32, namely the second inner sleeve 32 can be fixed on this position by the second limiting section 34 after moving a segment distance, make it at least will not move (namely in the second trocar sheath 33, second inner sleeve 32 now can continue up and stretch out the second trocar sheath 33, but will not move in the second trocar sheath 33);Meanwhile, what this second limiting section 34 can also release the second inner sleeve 32 is spacing so that it is can move relative to the second trocar sheath 33, or at least make the second inner sleeve 32 can move in the second trocar sheath 33. As shown in Figure 9 and Figure 10, in order to avoid the second inner sleeve 32 departs from the second trocar sheath 33 when stretching out the second trocar sheath 33, in the present embodiment, second end of the second inner sleeve 32 is provided with a circle detent 35, when the second end of the second inner sleeve 32 slides into the second limiting section 34, second Access Division is stuck in detent 35 to limit the second inner sleeve 32 position, i.e. be fixed in the second trocar sheath 33 by the second end of the second inner sleeve 32.

The piston cylinder 38 being coaxially disposed with the second trocar sheath 33 it is provided with in the second trocar sheath 33 in the present embodiment, the similar length of the length of this piston cylinder 38 and the second trocar sheath 33 in the present embodiment, second inner sleeve 32 slides and is located in piston cylinder 38, namely the second inner sleeve 32 can be considered as the piston in piston cylinder 38. Adopt the mode being built in the second trocar sheath 33 by piston cylinder 38 can reduce taking up room of this supporting seat 2 entirety, it is to avoid to increase supporting seat 2 volume so that it is to be easy to dispose or transport.

Further, hydraulic oil it is marked with between the second trocar sheath 33 and piston cylinder 38 to form annular fuel tank, base 30 is provided with oil pump 69, oil sucting one-way valve 40 and oil extraction check valve 41 it is provided with in this oil pump 69, oil pump 69 is externally provided with the stampeding section 39 (stampeding section 39 in the present embodiment is rocking handle) opened for controlling oil sucting one-way valve 40 or oil extraction check valve 41, cut out, namely passing through to trample rocking handle makes it swing to be separately turned on or close two check valves, stampeding section 39 to arrange structure unique, the concrete structure of the stampeding section 39 in the present embodiment is referred to shown in Fig. 1 and Fig. 8. the first oil circuit 42 being connected with oil extraction check valve 41 and the second oil circuit 43 being connected with oil sucting one-way valve 40 it is provided with in base 30. wherein, the first oil circuit 42 connects with piston cylinder 38 simultaneously and moves axially with pushing tow the second inner sleeve 32 for fuel feeding in piston cylinder 38, and the second oil circuit 43 is connected with fuel tank simultaneously and is delivered in the first oil circuit 42 by the second oil circuit 43 for by hydraulic oil. namely, oil pump 69 is by opening oil sucting one-way valve 40 so that the hydraulic oil in fuel tank to be guided the intracavity being delivered to oil pump 69 by the second oil circuit 43, and then oil pump 69 opens oil extraction check valve 41 and makes the hydraulic oil being positioned at oil pump 69 intracavity flow into the first oil circuit 42 and then inflow piston cylinder 38 by the second inner sleeve 32 jack-up by cutting out oil sucting one-way valve 40. (this connecting pipeline 44 may be provided at the other end of the first oil circuit 42 and the second oil circuit 43, it is possible to is arranged in any position between each oil circuit two ends to be positioned between the first oil circuit 42 of base 30 and the second oil circuit 43 to have connecting pipeline 44. certainly, when connecting pipeline 44 is positioned at end position place, non-oil road, in order to avoid hydraulic oil flows out, the other end of the first pipeline and the second pipeline is required to be blind end), to being provided with blocking or connecting the adjustment valve 45 of this connecting pipeline 44 in connecting pipeline 44 place on base 30, namely this adjustment valve 45 can make to be positioned between the first oil circuit 42 of base 30 and the second oil circuit 43 formed loop with to the hydraulic oil pressure release of the first oil circuit 42 so that the second inner sleeve 32 can move to the second trocar sheath 33, or make the first oil circuit 42 and the second oil circuit 43 form open circuit, making the hydraulic oil in the first oil circuit 42 is that hydraulic oil is thus pushing tow the second inner sleeve 32 moves outside the second trocar sheath 33.The form that arranges of connecting pipeline 44 is not unique, as long as it can ensure not only can connect but also can disconnect between the first oil circuit 42 with the second oil circuit 43 with regulating valve 45 mating reaction. Such as, in the present embodiment, regulate valve 45 and be located therein on an oil circuit, and this oil circuit connects with the one end regulating the oil pipeline (not shown) being provided with in valve 45, one end of connecting pipeline 44 is arranged on another oil circuit, the other end stretches in adjustment valve 45 and connects with the other end of its oil pipeline, it is provided with one in this oil pipeline for blocking the steel ball of this pipeline, regulates valve 45 and control this steel ball position to regulate and control the break-make of two oil circuits by its adjusting handle. In supporting seat 2 course of normal operation (namely, for in the process that supports) regulate valve 45 and need to be closed, namely make between the first oil circuit 42 and the second oil circuit 43 as open circuit, it is to avoid hydraulic oil forms circulation in base 30 and do not flow in piston cylinder 38. And break down when the second inner sleeve 32 is intended to move in the second trocar sheath 33 or at supporting seat 2 and hydraulic oil flow need to be avoided to time in piston cylinder 38, regulate valve 45 and be in open mode, so that forming path between the first oil circuit 42 and the second oil circuit 43, such hydraulic oil does not just flow in piston cylinder 38.

Preferably, in conjunction with shown in Fig. 9 and Figure 10, in order to make pars contractilis 31 to rotate by respect thereto 30, make it can adjust angle according to actual needs to have better support effect, the present embodiment spy is additionally arranged rotation section between pars contractilis 31 and base 30, and namely pars contractilis 31 is detachable by rotation section and rotating is installed on base 30. The bottom end cover 46 that this rotation section includes being installed in the second end of the second trocar sheath 33 is connected with bottom end cover 46 and is seated on base 30 and can the universal ball end 47 that rotates of respect thereto 30 and gland is outer at universal ball end 47 and the universal spherical cap 49 that is bolted with base 30 simultaneously, towards between the side of the second trocar sheath 33, it is additionally provided with universal ball cover 48 to make universal ball end 47 be capable of the purpose that respect thereto 30 rotates smoothly, universal spherical cap 49 and universal ball end 47. Specifically, as shown in figure 13, universal ball cover 48 is in semi-annular shape, and coordinates lid to be located at universal ball end 47 on the side of pars contractilis 31, the outside side towards pars contractilis 31 of universal ball cover 48 has an annular step tread 50, and this annular step tread 50 is circumferentially with a circle stopper slot along it; As shown in figure 14, universal spherical cap 49 is cylindrical, its one end is provided with the annular flange flange 56 for abutting with the annular step tread 50 of universal ball cover 48 when universal spherical cap 49 lid is located on universal ball cover 48, this annular flange flange 56 is provided with and above-mentioned stopper slot circular hole one to one, the 3rd spring 37 it is equipped with between the circular hole of each correspondence and stopper slot, 3rd spring 37 one end is inserted in stopper slot, and the other end is supported with the bolt being located in each circular hole. The effect arranging the 3rd spring 37 is to make to have the gap allowing universal ball cover 48 and the common respect thereto 30 of universal ball end 47 to rotate between universal spherical cap 49 and universal ball cover 48. Certainly, other elastic mode being connected is adopted also may be used between universal ball cover 48 with universal spherical cap 49. Further, as shown in Figure 9, the bottom of universal spherical cap 49 is connected with base 30 by fixing bolt, when, after the two fixing connection, the inner side of universal spherical cap 49, universal ball cover 48 just form the chamber 51 (chamber 51 namely formed between universal spherical cap 49, universal ball cover 48, universal ball end 47 and base 30) for oil storage of annular between one end and the outside of universal ball end 47 of base 30.Continuing with Figure 11 and Figure 15, the first branch road 52 it is respectively equipped with in universal ball end 47, second branch road 53 and Oil Guide pipeline 54, wherein the first branch road 52 axially penetrates through universal ball end 47 and bottom end cover 46 to connect with the first oil circuit 42 and piston cylinder 38 respectively, second branch road 53 one end connects with the second oil circuit 43, the other end connects with above-mentioned chamber 51, the two ends of Oil Guide pipeline 54 connect with fuel tank and above-mentioned chamber 51 respectively, namely, hydraulic oil in fuel tank first passes through Oil Guide pipeline 54 and flow in chamber 51, flowed into the second branch road 53 by chamber 51 again and then flow into the second oil circuit 43 being positioned at base 30.

Further, the rotation section in the present embodiment with between pars contractilis 31 for threadeding. Specifically, as shown in figure 15, universal ball end 47 has nipple 55; As shown in figure 16, bottom end cover 46 has can coordinate the flange 56 of clamping when it is installed in the second trocar sheath 33 with the second end of the second trocar sheath 33, bottom end cover 46 has the first connector 58 for being connected with piston cylinder 38 towards one end of the first end of the second trocar sheath 334, and its other end is provided with the second connector 60 for being connected with above-mentioned nipple 55. Wherein, the first connector 58 is columned groove, and piston cylinder 38 can coordinate with the second inner sleeve 32 in this groove of insertion. Bottom end cover 46 is provided with between one end of the first connector 58 and the inwall of the second trocar sheath 33 at it and has the gap for flowing through for hydraulic oil, in the present embodiment, bottom end cover 46 is provided with the cross section of one end of the first connector 58 is octagon, namely bottom end cover 46 is not provided with one end of flange 56 and has anistree face, so that having the gap allowing hydraulic oil to flow through between itself and the inwall of the second trocar sheath 33. Continuing with Fig. 9 and Figure 10, bottom end cover 46 is partially circumferentially provided with, between the first connector 58 and the second connector 60, the first groove 61 that a circle connects with above-mentioned gap, and namely hydraulic oil can flow in the first groove 61 by above-mentioned gap; What universal ball end 47 was positioned at chamber 51 is partially circumferentially provided with circle second groove 62, the setting of this second groove 62 is for increasing the interior volume for oil storage of chamber 51, and the setting of this second groove 62 also can save the making material of universal ball end 47 simultaneously, alleviate the weight of universal ball end 47. One end of Oil Guide pipeline 54 connects with the first groove 61, and the other end and the second groove 62 connect, and the second branch road 53 connects towards one end of the second trocar sheath 33 with the second groove 62. When the second oil circuit 43 is intended to introduce hydraulic oil under the effect of oil sucting one-way valve 40, Oil Guide pipeline 54 is by from fuel tank, by above-mentioned gap, the hydraulic oil flowed in the first groove 61 introduces in the second groove 62, then is introduced into the second oil circuit 43 being positioned at base 30 by the second branch road 53. Be preferably located on the second oil circuit 43 in base 30 and be additionally provided with high-pressure overflow valve 63, the second trocar sheath 33 is additionally provided with gas valve 64, with guarantee when hydraulic oil pressure is higher can releasing pressure automatically, the safety overall to ensure hydraulic system.

Continuing with shown in Fig. 9 and Figure 10, the inside of the second inner sleeve 32 along its be axially arranged with at it to the back-moving spring 57 providing restoring force when moving outside the second trocar sheath 33 to the second inner sleeve 32. This back-moving spring 57 is connected with bottom end cover 46 towards one end of base 30 by the first spring screw plug 66. This first spring screw plug 66 can coordinate, for one end, the column inserted in the first branch road 52 and have the axis hole connected with the first branch road 52, the other end of the first spring screw plug 66 has cylindrical union joint 68, it is axially arranged with multiple annular recess for being connected with the second spring along it outside this union joint 68, when one end of the first spring screw plug 66 is stretched in the first branch road 52, its union joint 68 is stuck in the bottom of the first connector 58;Further, the second inner sleeve 32 its end contiguous is formed with the spacing preiection 59 of annular, and back-moving spring 57 is connected with spacing preiection 59 towards one end of the second limiting section 34 by the second spring screw plug 67. This second spring screw plug 67 be distinctive in that with the first spring screw plug 66 second spring screw plug 67 outside cylindrical union joint 68 also along its be axially arranged with one for and above-mentioned spacing preiection 59 coordinate the Access Division of clamping, this Access Division is used for positioning the second spring screw plug 67, it is prevented that it moves along the axial of the second inner sleeve 32 to base 30 direction.

As shown in Figure 10 and Figure 16, when the second end of the second inner sleeve 32 and the bottom of the first connector 58 lean, this position is the initial position of the second inner sleeve 32. First end of the second inner sleeve 32 has and connects with the second inner sleeve 32 and be at least partially disposed at the union joint 68 outside the second limiting section 34 when the second inner sleeve 32 is in its initial position, to facilitate the connection of the second inner sleeve 32 and the second connector 26.

Further, the outer wall of the second inner sleeve 32 having multiple along its axially arranged wedge-shaped slot, the wedge-shaped slot shape that the outer wall of this wedge-shaped slot and the first inner sleeve 4 is arranged is identical, second limiting section 34 is identical with the first limiting section structure, including the second extension and contraction control seat, the second flexible pressure ring, the second extension and contraction control plate, the second flexible fixture block, the second torsion spring, the second guidance tape and for the second flexible pressure ring is fixed on the second bolt on the second extension and contraction control seat. wherein, second extension and contraction control seat is the upper end cover 65 of supporting seat 2, as shown in figure 17, it is identical with the structure of the first extension and contraction control seat of the first limiting section that this upper end cover 65 is arranged in the part (i.e. the upper end of figure upper end cover 65) outside the second trocar sheath 33, its lower end (i.e. the lower end of upper end cover 65 in Figure 17) is provided with for the Plug Division 36 with the one end fits grafting of the second trocar sheath 33, for better closure the second trocar sheath 33, namely better block fuel tank, the two ends enabling fuel tank are sealed by upper end cover 65 and bottom end cover 46 respectively, prevent hydraulic oil excessive. it addition, be additionally provided with sealing ring (in order to reach good sealing effectiveness, as long as the part relating to hydraulic oil between the structural member being respectively connected in the present embodiment is equipped with sealing ring) between the inwall of this Plug Division 36 and the second trocar sheath 33.

During concrete operations supporting seat 2, in conjunction with shown in Figure 18 and 19, trample rocking handle, oil sucting one-way valve 40 is made to close, oil extraction check valve 41 is opened, now the hydraulic oil in fuel tank by drops and pours in by the second oil circuit 43 that piston cylinder 38 is interior moves (certainly directly being extracted out by the second inner sleeve 32 also by the union joint 68 pulling the second inner sleeve 32) with pushing and withstanding the second inner sleeve 32 outside the second trocar sheath 33, due to the hydraulic oil pressurized that pours in piston cylinder 38, there is certain pressure (force value of this pressure is worth more than atmospheric pressure), therefore, it is possible to support lives the second inner sleeve 32 and expansion link and support bar 27 firmly, prevent the second inner sleeve 32 from moving to the direction in the second trocar sheath 33. and in the process that the second inner sleeve 32 moves, the crowded thrust that the flexible fixture block of the second of second limiting section 34 is first affected by the second inner sleeve 32 makes it move in the second mounting groove being located on upper end cover 65, namely the second flexible fixture block separates with previous wedge-shaped slot and abuts with second inner sleeve 32 part between this wedge-shaped slot with a rear wedge-shaped slot, along with upper shifting of continuing of the second inner sleeve 32 makes next wedge-shaped slot move to and the open-position-side opposite position of each second mounting groove, now the elastic force of the 4th spring that each second flexible fixture block is provided thereon moves to this wedge-shaped slot until both are meshed to reach the effect of spacing second inner sleeve 32.Namely, second inner sleeve 32, when moving outside the second trocar sheath 33, not only to be limited by the jacking force of high-pressure and hydraulic oil, is additionally subjected to the support force that the in the second limiting section 34 second flexible fixture block provides it, can firmly spacing live the second inner sleeve 32, it is prevented that it reversely moves. and the setting of hydraulic oil is possible not only to provide strong support force for the second inner sleeve 32, the position of the second inner sleeve 32 can also be carried out trace adjustment, such as when this support arrangement supports bracket, owing to the spacing between two wedge-shaped slots is arranged, improper (namely on the second inner sleeve 32, the height of current wedge-shaped slot can not meet bearing height, and the next one wedge-shaped slot height when moving to the second limiting section 34 can exceed bearing height), bracket all can not be supported preferably when making the second flexible fixture block with arbitrary wedge-shaped slot phase clamping, now just can regulate the position of the second inner sleeve 32 according to Support Position by regulating the oil mass of hydraulic oil and support, spacing second inner sleeve 32, namely the support force of the second inner sleeve 32 is provided by hydraulic oil completely, second flexible fixture block without with the arbitrary wedge-shaped slot clamping on the second inner sleeve 32. further, when making the second inner sleeve 32 being in spacing state to when moving in the second trocar sheath 33, such as, when needing the length that shortening the second inner sleeve 32 is positioned at outside the second trocar sheath 33, stop trampling stampeding section 39, and open adjustment valve 45, now rotate the second extension and contraction control plate, make the second extension and contraction control plate by promoting the straight pin being located on the second flexible fixture block to drive the second flexible fixture block to move in the second mounting groove along the slip of corresponding the 3rd pilot hole (the 3rd pilot hole is located on the second extension and contraction control plate), and then make each second flexible fixture block separate with corresponding wedge-shaped slot, the mobile offer sliding space of the second inner sleeve 32 is provided. when the second inner sleeve 32 is adjusted to desired location place, screw closedown and regulate valve 45, unclamp the second extension and contraction control plate, second extension and contraction control plate resets under the drive of the second torsion spring, each second flexible fixture block resets under the effect of its 4th spring simultaneously, that is, with corresponding wedge-shaped slot engagement, the second inner sleeve 32 is carried out spacing.

Claims

1. one kind support arrangement, it is characterised in that including:

Supporting seat;

2. according to claim 1 support arrangement, it is characterized in that, described expansion link also includes the first connector being installed on the first end of described first inner sleeve and the second connector being installed in the second end of described first trocar sheath, when the second end of described first inner sleeve moves the second end to described first trocar sheath, second end of described first inner sleeve and described second connector lean, and described first connector is at least partially disposed at outside described first limiting section;

3. according to claim 2 support arrangement, it is characterised in that

Described first connector is cylindrical, and middle part has the second annular ridge for fastening with the first end of described first inner sleeve in it;

4. according to claim 3 support arrangement, it is characterised in that

Described first flexible fixture block is not provided with the shape of the side of spring with described first wedge-shaped slot form fit can coordinate in described first wedge-shaped slot of insertion;

5. according to claim 4 support arrangement, it is characterized in that, described adjustment portion also include being located at described first flexible between pressure ring and the first extension and contraction control plate for the first torsion spring of the described first extension and contraction control plate that resets and the first guidance tape of annular of rotating for the described first extension and contraction control plate that leads, described first guidance tape coordinates in the through hole being located at described first extension and contraction control plate and reclines mutually with described first extension and contraction control seat.

6. according to claim 4 support arrangement, it is characterised in that described supporting seat includes:

Base;

7. according to claim 6 support arrangement, it is characterised in that

Being provided with the piston cylinder coaxial with described second trocar sheath in described second trocar sheath, the second end of described second inner sleeve is positioned at described piston cylinder can moving axially along described piston cylinder;

8. according to claim 7 support arrangement, it is characterised in that

Described pars contractilis is installed on described base by rotation section is detachable;

Bottom end cover that described rotation section includes being installed in described second trocar sheath the second end, it is connected between described bottom end cover with described base and can the universal ball end of relative described base rotation and gland is outer at described universal ball end and the universal spherical cap that is connected with described base, described universal spherical cap and described universal ball end are additionally provided with universal ball cover towards between the side of described second trocar sheath, it is connected for elasticity between described universal ball cover with described universal spherical cap, between described universal ball end, described universal ball cover and described universal spherical cap, forms the chamber for oil storage;

Described bottom end cover has the flange for coordinating clamping with the second end of described second trocar sheath;Described bottom end cover is provided with for fixing the first connector being connected with described piston cylinder towards one end of described second trocar sheath the first end, and the other end of described bottom end cover is provided with the second connector for connecting with described nipple;

9. according to claim 8 support arrangement, it is characterised in that

The outer wall of described second inner sleeve has multiple along its second axially arranged wedge-shaped slot;

Described second limiting section is identical with described first limiting section structure, including the second flexible pressure ring, the second extension and contraction control plate, the second flexible fixture block, the second torsion spring, the second guidance tape, the second bolt and the second extension and contraction control seat, described second extension and contraction control seat forms the upper end cover of described supporting seat, and the part that wherein said upper end cover is positioned at outside described second trocar sheath is identical with described first extension and contraction control holder structure;

10. according to claim 9 support arrangement, it is characterized in that, also include support bar, one end that described support bar one end is positioned at outside described first limiting section with described first connector is connected, the other end of described support bar is provided with bracket, wherein, described support bar is provided with anti-collision ring for the one end being connected with described first connector.