CN207278838U - A kind of sealed clamp structure - Google Patents

Abstract

The utility model discloses a kind of sealed clamp structure, including main shaft, two side plates in left and right are socketed with main shaft, snap-gauge is further fixed on the outside of side plate, the marginal portion of snap-gauge is fixed with side plate, center section evagination, and gap is equipped between snap-gauge madial wall and the end of main shaft.The beneficial effects of the utility model are：It can play a protective role to main shaft, easy to the maintenance, maintenance and replacement operation of main shaft.

Description

A kind of sealed clamp structure

Technical field

Lifting equipment is the utility model is related to, is specifically a kind of sealed clamp structure of use on pulley blocks.

Background technology

Lifting equipment uses pulley blocks mostly, is equipped with snap-gauge in each pulley assembly in pulley blocks, how solid snap-gauge is It is scheduled on the outside of side plate, and correspondence position of the main shaft in pulley assembly on cylindrical surface is equipped with limiting slot, snap-gauge adaptation is connected to In limiting slot, play the role of axial limiting to main shaft, therefore many times snap-gauge is also referred to as limit card board.Chinese patent literature CN203701175U disclosed " cutter suction dredger crane span structure pulley blocks " on July 9th, 2014, which includes Pulley blocks housing, two side are respectively fixed with supporting baffle, and corresponding supported hole is provided with two supporting baffles, support Run through the central shaft for having and being adapted to it in hole, be arranged with multiple pulleys free to rotate on central shaft, one end of central shaft is consolidated Surely there is on the outside of the supporting baffle, be close to the central shaft baffle of supporting baffle outer surface, the radial dimension of central shaft baffle is big In the diameter of supported hole；The other end of central shaft is provided with the keyway on the outside of supporting baffle, on the outer surface of supporting baffle The limit card board being fixed with insertion keyway, is detachably connected between limit card board and supporting baffle.Such conventional solution In, the end of main shaft is exposed outside, easy corrosion, causes dismounting difficult, therefore maintenance work is difficult to carry out.It is simultaneously as naked Expose outside, main shaft is also easily accidentally impacted, and causes to deform, it is difficult to replace.

The content of the invention

Based on the above problem, the utility model is intended to invent a kind of sealed clamp structure, and protection can be played to main shaft Effect, easy to the maintenance, maintenance and replacement operation of main shaft.

To achieve these goals, the utility model adopts the following technical solution：A kind of sealed clamp structure, including master Axis, two side plates in left and right are socketed with main shaft, snap-gauge is further fixed on the outside of side plate, and marginal portion and the side plate of snap-gauge are fixed, Center section evagination, is equipped with gap between snap-gauge madial wall and the end of main shaft.

In technical solution, the snap-gauge of middle evagination is designed with, marginal portion and the side plate of board are fixed, middle evagination Sections inner side forms a cavity, and the end of main shaft is contained in cavity as a piece of clam shell.The shape of snap-gauge can be selected Semi-cylindrical shaped is selected, hemisphere shell sape etc. can also be selected.So, without slotting to be clamped snap-gauge on main shaft, the intensity of itself Increase；Snap-gauge forms protection on the outside of the shaft end of main shaft, even if having collided with, will not influence main shaft；Main shaft does not exist It is exposed outside, it is more difficult to get rusty；When needing maintenance, it is only necessary to which unloading snap-gauge just can expose main shaft, convenient and efficient.

Preferably, the major axis horizontal is to horizontal；Seal and coordinate between main shaft and side plate, the marginal portion and side of snap-gauge Seal and coordinate between plate；Antirust oil or lubricating oil are perfused with the space that main shaft, side plate, snap-gauge surround.This programme determines main shaft Justice is horizontal horizontal state, and seals and coordinate between main shaft and side plate, seals and coordinates between the marginal portion of snap-gauge and side plate, So that the space surrounded of main shaft, side plate, snap-gauge forms a confined space, when installation irrigated in the confined space antirust oil, Lubricating oil etc., such as glycerine, can increase substantially the function of the anti-embroidery in shaft end of main shaft, prolong the service life.

Preferably, the end of main shaft is equipped with axially projecting grease nozzle seat, it is corresponding on snap-gauge to be equipped with through hole, grease nozzle Stretched out in the slave through hole of seat adaptation；It is clearance fit between the cylindrical surface of grease nozzle seat side wall and through hole hole wall.Part main shaft Laterally raised grease nozzle seat is also equipped with both ends, therefore corresponding on the snap-gauge of this programme design is equipped with through hole, confession Grease nozzle seat is stretched out from through hole.In order to keep enough sealing effects, cylindrical surface and the through hole hole wall of the side wall of grease nozzle seat Between be clearance fit.

Preferably, tight fit is socketed with bearing on main shaft, bearing is presented axially between biside plate；Bearing it is interior Enclose and be equipped with end ring circular between the side plate interior sides wall of homonymy, end ring tight fit is socketed on main shaft.In master On axis under the use state of the socket bearing of tight fit, the axial both ends of bearing are clipped in bearing around end ring is designed with Between inner ring and the side plate inner wall of homonymy, the axial direction of bearing is uniquely restricted, indirectly limit the axial displacement of main shaft.

Preferably, what is penetrated through in the axial direction in main shaft is equipped with butter oil circuit, diametrically equipped with some butter branches, ox Oily branch one end is conducted to butter oil circuit, and the other end is conducted to Bearing inner oil circuit；The both ends of butter oil circuit connect grease nozzle The through hole at seat middle part, is fixed with grease nozzle on the through hole outboard end in the middle part of grease nozzle seat.Can be to butter oil circuit by grease nozzle Middle perfusion lubricating oil, such as lithium saponify etc., makes lubricating oil by butter oil circuit, butter branch, always into Bearing inner oil circuit, Bearing is lubricated.Bearing maintenance can be completed without dismantling in the case of snap-gauge by so doing.

In conclusion the beneficial effects of the utility model are：It can play a protective role to main shaft, easy to the dimension of main shaft Shield, maintenance and replacement operation.

Brief description of the drawings

Fig. 1 is the structure diagram of the utility model.

Wherein：1 main shaft, 2 side plates, 3 snap-gauges, 4 grease nozzle seats, 5 bearings, 6 end rings, 7 grease nozzles, 8 snap-gauges fastening spiral shell Bolt, 9 cover boards, 10 pulleys.

Embodiment

The utility model is further described with embodiment below in conjunction with the accompanying drawings.

Embodiment as shown in Figure 1, is a kind of sealed clamp structure, applies the pulley in harbour, rig a ship machinery In group.The pulley blocks of this example include horizontally horizontal main shaft 1, and tight fit is socketed with two side plates 2 in left and right, side on main shaft Snap-gauge 3 is fixed with by snap-gauge fastening bolt 8 on plate lateral wall.The snap-gauge marginal portion and side plate of this example are fixed, center section Evagination, forms a clam shell, and one end of main shaft is located in the clam shell inner cavity, and the end of snap-gauge madial wall and main shaft it Between be equipped with gap.Seal and coordinate between main shaft and side plate, seal and coordinate between the marginal portion of snap-gauge and side plate；Main shaft, side plate, Antirust oil or lubricating oil are perfused with the space that snap-gauge surrounds, this example selection is glycerine.Tight fit is socketed with axis on main shaft 5 are held, bearing is presented axially between biside plate；It is circular between the inner ring of bearing and the side plate interior sides wall of homonymy to be equipped with bearing Baffle ring 6, end ring tight fit are socketed on main shaft.The shaft end of bearing is covered with cover board, to play dustproof effect.Bearing Outer ring on tight fit socket pulley 10.Under working status, the outer ring rotating of pulley driving bearing, and the inner ring of bearing and master Axis is opposing stationary.What the middle part of main shaft also penetrated through vertically is equipped with butter oil circuit, diametrically equipped with some butter branches, Butter branch one end is conducted to butter oil circuit, and the other end is conducted to Bearing inner oil circuit；The axial both ends of main shaft are mounted on ox Oil nozzle seat 4, is provided with grease nozzle 7 on grease nozzle seat, the through hole in grease nozzle, through hole and butter oil circuit one inside grease nozzle seat Road connects, and lubricating grease can be poured into butter oil circuit by grease nozzle, then constantly on to Bearing inner oil circuit along butter branch, To lubricate bearing.For this reason, corresponding on snap-gauge be equipped with through hole, stretched out in the slave through hole of grease nozzle seat adaptation；Grease nozzle seat side wall Cylindrical surface and through hole hole wall between be clearance fit.

The sealed clamp structure of this example, without the Design Orientation groove on main shaft, but is arranged on spindle nose by snap-gauge Outside, the effect of sealing is formd to spindle nose, can not only prevent that the shaft end of main shaft from being broken, but also main shaft can be strengthened No matter rust-proofing ability, install, use, or maintaining or replacement, all easily.

Claims (5)

1. a kind of sealed clamp structure, including main shaft（1）, two side plates in left and right are socketed with main shaft（2）, the outside of side plate is also It is fixed with snap-gauge（3）, it is characterized in that, marginal portion and the side plate of snap-gauge are fixed, center section evagination, snap-gauge madial wall and main shaft End between be equipped with gap.

2. a kind of sealed clamp structure according to claim 1, it is characterized in that, the major axis horizontal is to horizontal；Main shaft Seal and coordinate between side plate, seal and coordinate between the marginal portion of snap-gauge and side plate；The space that main shaft, side plate, snap-gauge surround Inside it is perfused with antirust oil or lubricating oil.

3. a kind of sealed clamp structure according to claim 2, it is characterized in that, the end of main shaft is equipped with axially projecting Grease nozzle seat（4）, it is corresponding on snap-gauge to be equipped with through hole, stretched out in the slave through hole of grease nozzle seat adaptation；The circle of grease nozzle seat side wall It is clearance fit between cylinder and through hole hole wall.

4. a kind of sealed clamp structure according to claim 1 or 2 or 3, it is characterized in that, the socket of tight fit on main shaft There is bearing（5）, bearing is presented axially between biside plate；It is circular between the inner ring of bearing and the side plate interior sides wall of homonymy to set There is end ring（6）, end ring tight fit is socketed on main shaft.

5. a kind of sealed clamp structure according to claim 3, it is characterized in that, what is penetrated through in the axial direction in main shaft is equipped with Butter oil circuit, is diametrically conducted to butter oil circuit, the other end is conducted to bearing equipped with some butter branches, butter branch one end Internal oil passages；The both ends of butter oil circuit connect the through hole in the middle part of grease nozzle seat, solid on the through hole outboard end in the middle part of grease nozzle seat Surely there is grease nozzle（7）.