The expansion nipple elastomer pulling off device of jointing in the middle of the cable
Technical field
The utility model relates to the erecting device of a kind of high pressure, the middle jointing of extra-high-tension cable terminal attachment cable, the expansion nipple elastomer pulling off device of jointing in the middle of particularly a kind of cable.
Background technology
At present, in the high pressure of 66kV and the above electric pressure of 66kV, the ultrahigh voltage power cable connected system, as jointing in the middle of the cable of cable termination annex is the link of comparison weakness, break down easily, its failure rate accounts for more than 70% of whole cable connected system, and jointing directly has influence on the stability of whole system in the middle of the cable.The elastomer of jointing provides essential thrust to the surface of cable in the middle of the cable, improve joint integral insulation level, therefore it is crucial that the fine or not total quality that directly influences cable intermediate joint of the elastomer installation quality of jointing in the middle of the cable, so the joint elastic body of the middle jointing of cable is installed.The structure (as shown in Figure 4) of jointing in the middle of the present cable, include cable 1 ', joint elastic body 2 ', radome 3 ', metal takes over 4 ', cable conductor 5 ', cable insulation 6 ', joint elastic body 2 ' is cylindric, cable comprises cable conductor 5 ', cable insulation 6 ', when two cable joints join, the method that generally adopts is earlier joint elastic body 2 ' to be sleeved on the cable insulation 6 ' of a cable 1 ' at present, and joint elastic body 2 ' is pulled to the cable conductor 5 ' that exposes front end, cable conductor 5 ' outside with two cable joint places puts metal adapter 4 ' and carries out crimping then, card has been gone up the radome 3 ' of shielding action again outside metal adapter 4 ', at last joint elastic body 2 ' is pulled to the cable joint place, is pulled to the center of cable joint until joint elastic body 2 '.This mounting means that spurs the joint elastic body back and forth on cable exists following defective: (1) general radome is two split structural shapes that semicircle alumiaum article is formed, body structure made two semicircle alumiaum article joints exist the slit in this minute, therefore the joint elastic body when spurring back and forth very easily the conductively-closed cover scratch, influence the quality of cable connection joint greatly; (2) the joint elastic body causes the semiconductive material of cable insulation external shield 7 ' to be brought on the cable insulation 6 ' of removing insulation external shield 7 ' when spurring back and forth easily, cause the damage of middle jointing during energising easily, influence the stability of cable connection joint; Labor strength is big when (3) installing, and troublesome poeration is wasted time and energy, and the set-up time is long.Because the mounting means of existing joint elastic body exists above-mentioned defective, the improvement that people have proposed to install is imagined, a kind of new joint elastic body mounting means has been proposed: be exactly that the joint elastic body is expanded to earlier on the expansion insulated tube, when the joint elastic body of jointing is installed in the middle of cable like this, directly the joint elastic body with expansion is sleeved on the cable insulation of a cable, the cable conductor outside for the treatment of two cable joint places puts metal adapter carrying out crimping, and behind radome on the metal adapter wild card, just can directly the joint elastic body of expansion be moved on to the center of cable joint like a cork; And then with the expansion joint elastic in the expansion insulated tube pull out, the joint elastic body will be held tightly on cable intermediate joint.Expand the vertically long than joint elastic body of insulated tube, some exposes the joint elastic body expansion insulated tube, and clamping position is arranged like this, is convenient to expand insulated tube and pulls out from the joint elastic body.The imagination of this new joint elastic body mounting means needs two kinds of devices and finishes, a kind of is that the joint elastic body is expanded to the joint elastic body extension fixture of expanding on the insulated tube, a kind of is after the joint elastic body of expansion is in place, the expansion nipple elastomer pulling off device that the expansion insulated tube in the joint elastic body is pulled out.But people also do not design these the two kinds isolated plants that are used for the installation of joint elastic body at present.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, the expansion nipple elastomer pulling off device of jointing in the middle of the cable of provide a kind of simple in structure, processing ease, being convenient to install.
Realize that the above-mentioned purpose technical scheme is: the expansion nipple elastomer pulling off device of jointing in the middle of a kind of cable, comprise hydraulic pump, hydraulic cylinder, clamping plate, baffle plate, pipe clamp, hydraulic pump is connected with hydraulic cylinder, hydraulic cylinder comprises piston rod, hydraulic cylinder, and clamping plate are fixed on the hydraulic cylinder, and baffle plate is fixed on the piston rod, clamping plate have slot, have slot on the baffle plate, the slot on the clamping plate is identical with slot shape size on the baffle plate, and front end and baffle plate that pipe clamp is positioned at baffle plate join.
Further, slot on the described clamping plate and the slot on the baffle plate are inverted U-shaped slot.
Further, described clamping plate upper end has connecting hole, is enclosed within the hydraulic cylinder upper end, and by being threaded and the hydraulic cylinder Joint.
Further, described baffle plate upper end has connecting hole, is enclosed within the piston rod upper end, and by being threaded and the piston rod Joint.
After adopting technique scheme, have a lot of benefits: be essentially different with the mounting means that on cable, spurs the joint elastic body in the prior art back and forth, the utility model is after the joint elastic body of expansion is in place, expansion nipple elastomer pulling off device with the expansion insulated tube in the joint elastic body is pulled out is held on cable intermediate joint the joint elastic body tightly.It is a kind of special-purpose erecting device of the joint elastic body novel mounting mode of jointing in the middle of the cable.(1) simple in structure, processing ease, be convenient to the joint elastic body and install.The utility model will be positioned at the front end of baffle plate and the pipe clamp that joins with baffle plate when using, be clipped on the expansion insulated tube external diameter that exposes in the joint elastic body of expansion, the baffle plate that is fixed in the clamping plate on the hydraulic cylinder and be fixed on the piston rod is placed between pipe clamp and the joint elastic body, keep the center and expansion insulated tube centres of slot on clamping plate and the baffle plate during placement, the expansion insulated tube is stressed evenly when spurring like this.Clamping plate lean against on the joint elastic body, baffle plate leans against on the pipe clamp, the primer fluid press pump, make hydraulic cylinder works, piston rod stretches out, and the baffle plate affixed with piston rod stretches out thereupon, the pipe clamp that promotes to join with baffle plate is to the lateral movement away from the joint elastic body, the motion drive of pipe clamp is moved with pipe clamp with the affixed expansion insulated tube of pipe clamp, pulls out from the joint elastic body thereby will expand insulated tube, and the joint elastic body is held tightly on cable intermediate joint.Take off pipe clamp and expansion insulated tube again.The utility model is by piston rod and motionless hydraulic cylinder a relative motion to be arranged, thereby realizes being fixed in baffle plate on the piston rod with respect to the relative motion that is fixed in the clamping plate on the hydraulic cylinder.And then reach and to expand the purpose that insulated tube is easily pulled out from the joint elastic body.The utility model is simple in structure, processing ease, reliable, and the mechanization degree height, the efficiency height, labor strength is low, and is time saving and energy saving, is convenient to large-scale production; (2) installation quality is good.The utility model is pulled out the expansion insulated tube in the joint elastic body of expansion after the joint elastic body of expansion is in place, and the joint elastic body is held tightly on cable intermediate joint.The utility model can not damage the joint elastic body, and is more safe and reliable, and installation quality is good, helps guaranteeing the electric stability of whole cable intermediate joint.
Description of drawings
Structural representation when Fig. 1 is work of the present utility model;
Fig. 2 is the structural representation of the utility model clamping plate spare 3;
Fig. 3 is the structural representation of the utility model casing member 4;
Fig. 4 is the structural representation of jointing in the middle of the cable.
Embodiment
Below in conjunction with drawings and Examples the utility model is described in further detail.
Embodiment
As Fig. 1, Fig. 2, shown in Figure 3, the expansion nipple elastomer pulling off device of jointing in the middle of a kind of cable, comprise hydraulic pump 1, hydraulic cylinder 2, clamping plate 3, baffle plate 4, pipe clamp 5, hydraulic pump 1 is connected with hydraulic cylinder 2, hydraulic cylinder 2 comprises piston rod 2-1, hydraulic cylinder 2-2, and clamping plate 3 are fixed on the hydraulic cylinder 2-2, and clamping plate 3 upper ends have connecting hole 3-2, connecting hole 3-2 is enclosed within hydraulic cylinder 2-2 upper end, and makes clamping plate 3 and hydraulic cylinder 2-2 Joint by being threaded.Baffle plate 4 is fixed on the piston rod 2-1, and baffle plate 4 upper ends have connecting hole 4-2, and connecting hole 4-2 is enclosed within piston rod 2-1 upper end, and makes baffle plate 4 and piston rod 2-1 Joint by being threaded.Clamping plate 3 have slot 3-1, have slot 4-1 on the baffle plate 4, and the slot 3-1 on the clamping plate 3 is identical with slot 4-1 shape size on the baffle plate 4, and slot 3-1 and slot 4-1 are inverted U-shaped slot.Front end and baffle plate 4 that pipe clamp 5 is positioned at baffle plate 4 join.To be positioned at the front end of baffle plate 4 and the pipe clamp 5 that joins with baffle plate 4 during use, be clipped on expansion insulated tube 6 external diameters that expose in the joint elastic body of expansion, the baffle plate 4 that is fixed in the clamping plate 3 on the hydraulic cylinder 2-2 and be fixed on the piston rod 2-1 is placed between pipe clamp 5 and the joint elastic body 2 ', slot 3-1 and slot 4-1 are in the face of expansion insulated tube 6 one sides, clamping plate 3 lean against on the joint elastic body 2 ', baffle plate 4 leans against on the pipe clamp 5, primer fluid press pump 1, make hydraulic cylinder 2 work, piston rod 2-1 stretches out, the baffle plate 3 affixed with piston rod 2-1 stretches out thereupon, the pipe clamp 5 that promotes to join with baffle plate 3 is to the lateral movement away from the joint elastic body, the motion drive of pipe clamp 5 is moved with pipe clamp 5 with pipe clamp 5 affixed expansion insulated tubes 6, pull out from joint elastic body 2 ' thereby will expand insulated tube 6, joint elastic body 2 ' is held tightly in the transition joint of cable 1 '.Take off pipe clamp 5 and expansion insulated tube 6 again.
The utility model is not limited to the foregoing description, and the technical scheme that all employings are equal to replacement or equivalence replacement formation all belongs to the claimed scope of the utility model.