CN2690597Y

CN2690597Y - Clip safety pressure relief device

Info

Publication number: CN2690597Y
Application number: CN 200420031236
Authority: CN
Inventors: 徐乃成
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-04-16
Filing date: 2004-04-16
Publication date: 2005-04-06
Anticipated expiration: 2014-04-16

Abstract

The utility model discloses a clip safety pressure relief device used for timbering down-hole laneways, which is composed of a guide screw with a handle, a transverse beam whose middle is provided with a thread hole and two suspension arms. The guide screw is twisted in the thread hole of the transverse beam; the upper ends of the two suspension arms are provided with holes which are separately pierced at the both ends of the transverse beam; the lower ends of the two suspension arms are equipped with pin hooks which extend towards the inner side. The utility model has advantages of simple structure and convenient using and moving, doesn't use the electricity, and can be completely operated by hand. When disassembling the laneway framed timbers, the safety can be ensured without damaging the clip; the production cost is reduced, and the clip safety pressure relief device is suitable to various clips because the opening can be adjusted.

Description

Clamp safe unloading pressure device

One, technical field

The utility model belongs to the mine technical field of underground, is specifically related to a kind of underworkings supporting appurtenance.

Two, background technology

Clamp is the most frequently used facility of underworkings, and it is the fixture of the binding site of the beam of supporting shed and leg.Use the advantage of clamp to be: when the shed ambient pressure increased, it can make shed flexible, and rock or coal that the tunnel is unlikely to be dropped are blocked, and influence ventilation, pedestrian and production.Because the tunnel is subjected to the effect of extraneous power for a long time, and the part tunnel is damaged in various degree.When not reaching the needing of ventilation, pedestrian and production, must the kaneh section, original support is changed.Because the tunnel when dismantling is gross distortion mostly, the power that clamp bore is a lot of times before not damaging, so field-strip has certain danger, when unloading last clamp, nut will be under the effect of external force when being discharged to a few circle in back, eject from screw rod, the clamp screw rod is damaged; The nut that ejects is easy to hurt sb.'s feelings.Present field-strip all is directly to unload clamp, does not have other ancillary method.

Three, summary of the invention

The purpose of this utility model provides a kind of clamp safe unloading pressure device of special use, solves the unsafe problems of unloading clamp, guarantees that the clamp that unloads does not damage.The technical solution adopted in the utility model is: clamp safe unloading pressure device has the crossbeam of screwed hole and two extension arms to constitute by a screw mandrel that has handle with middle, screw mandrel is screwed in the screwed hole of crossbeam, two extension arm upper ends are porose, be through the crossbeam two ends respectively, two hang the arm lower end the pin hook of stretching to the inside.

The beam of roadway support shed and leg all have the section of arcuation, at the two binding site, one section coincidence are arranged, and fix with two clamps.When dismounting, the utility model acts on the centre of two clamps, at first by two distances of hanging arm of the width adjustment of propping up legging and beam, extension arm pin hook is hooked in the back side of shed, with the planar top of screw mandrel lower end front central at the shed leg, firmly screw screw mandrel, it is stressed to have reduced clamp, turn handle to returning again after unloading lower clip, finish dismantlement work.

The utility model is simple in structure, use, conveniently moving, not electricity consumption, manual operations fully.Safe and reliable, guarantee that clamp does not damage, reduce production costs.Two openings of hanging between arm are adjustable, are fit to various clamps.

Four, description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is used in view on the supporting shed for the utility model;

Fig. 3 is the utility model working state schematic representation;

Five, the specific embodiment

Have one section to be square cylinder on the top of screw mandrel 3, other parts all are screw thread; There is the square hole that matches with screw mandrel 3 square cylinders at the center of handle 1.During installation, handle 1 is enclosed within on the screw mandrel 3, fixing with nut 5 above.Screw mandrel 3 is screwed in the screwed hole at crossbeam 2 centers.Hang with two at crossbeam 2 two ends and hang arm 4, the square hole on the extension arm 4 and the cross section of crossbeam 2 terminations adapt, and it is moving that extension arm 4 can be gone here and there on crossbeam 2.During use, it is middle that the utility model is placed on two clamps 6, the pin hook of two extension arms 4 is hooked in the back side of shed 7, make screw mandrel 3 bottoms withstand on the shed front central, firmly turn handle, can use the lever reinforcing, the leg and the beam of shed are compressed, and unloader plays the effect of clamp.Reduced the stressed of clamp, at this moment just clamp slowly can have been unloaded.Again slowly to the back rotation handle, make beam and leg and extraneous active force slowly reduce to minimum, thereby guaranteed safety in production at last, reduced material consumption, improved economic benefit.In the operation, between the contact surface of screw mandrel and shed, add a leather packing, both can protect equipment not impaired, also can not produce friction spark, in the mine of gas is arranged, use, avoid causing the accident.

Claims

1, a kind of clamp unloader, it is characterized in that: it has the crossbeam of screwed hole and two extension arms to constitute by a screw mandrel that has handle with middle, and screw mandrel is screwed in the screwed hole of crossbeam, and two extension arms upper ends are porose, be through the crossbeam two ends respectively, two hang the arm lower end the pin hook of stretching to the inside.