CN202897419U - Intermediate support mechanism applicable to screw blade feed conveyor - Google Patents

Abstract

The utility model discloses an intermediate support mechanism applicable to a screw blade feed conveyor. According to the technical scheme, the intermediate support mechanism applicable to the screw blade feed conveyor comprises a front connecting shaft, a rear connecting shaft and an outer side fixing connector provided with a bearing mounting hole, and is characterized by further comprising a bearing with solid lubricant, and the bearing with solid lubricant is mounted in the bearing mounting hole and matched with the front connecting shaft and the rear connecting shaft and comprises a metal body and graphite inlaid in the metal body. The intermediate support mechanism applicable to the screw blade feed conveyor is simple in structural design, self lubrication of the graphite is utilized, and advantages of copper alloy and non-metal antifriction materials are combined, so that an intermediate support can have sufficient bearing strength as well as achieve lubrication among the shafts and the hole in a high-dust-content environment, maintenance and use cost of the intermediate support is reduced, and technical progress is reflected.

Description

Be applicable to the center support mechanism of feed helicallobe feedway

Technical field

The utility model relates to a kind of supporting device of feed helicallobe feedway, relates generally to specifically the center support mechanism of this feedway.

Background technology

Known, the helicallobe feedway often uses is carrying dust, the bulk materials such as particle.The helicallobe feedway is also as the means of delivery of feed, this helicallobe feedway delivered length highly reach 6 meters, 9 meters even longer, according to specification, generally surpass 3 meters and just should in the middle of conveying axis, install supporting member additional, not enough, eccentric sagging to prevent the conveying axis rigidity, the situations such as spiral conveying blade friction carrier wall occur.

One of prior art, intermediate support body adopts the bearing of charging-up lubricant oil, cooperates with conveying axis such as deep groove ball bearing, but no matter how this antifriction-bearing box seals, fine dusts in the middle of the feed equally can enter in the bearing, and dust can lubricated oil adhesion make bearing be easy to kill; Next lubricating oil that overflows also is easy to contaminated material.

Two of prior art, intermediate support body adopt nylon to cooperate with conveying axis, namely install lining additional in axle sleeve, although lining has from slip, but undercapacity is only suitable for underloading, low speed mechanism, and the conveying axis load is heavy, tactile surface wear is too large with being coupling, and service life is low, and the maintenance use cost is high.

Three of prior art, intermediate support body adopt copper sheathing to cooperate with conveying axis, but copper bush lubrication is not enough in the high-speed operation situation, and tactile surface wear is too large with being coupling, and service life is low, cause the maintenance use cost high.

Four of prior art, the steel bushing of intermediate support body adopt the heat treatment of 45# steel to form, and connecting two spindle nose materials also is that the 45# steel is heat-treating profiled, because material similar face hardness is different, so the long time running cal val is large, easily produce interlock after friction is serious, service life is low.Just need change once in the fastest 3 months; Even if the replacing axle sleeve, but replacement frequency is higher, and the maintenance use cost is high.

So those skilled in the art are necessary the center support mechanism of the helicallobe feedway of carrying feed is further improved.

Summary of the invention

For the defective of above-mentioned prior art and the technical matters of existence, the technical problems to be solved in the utility model has provided a kind of center support mechanism that the helicallobe feedway of feed is carried in self-lubricating function and high being applicable to of intensity that has.

The utility model solves the problems of the technologies described above the technical scheme that adopts: the center support mechanism that is applicable to feed helicallobe feedway, comprise front coupling spindle, rear coupling spindle and the outside fixed connecting piece that is furnished with bearing mounting hole, characterized by further comprising a bearing with solid lubricant that is installed in the described bearing mounting hole, it matches with forward and backward coupling spindle; Described bearing with solid lubricant comprises body and is embedded in graphite in the body.

Technique effect of the present utility model is: the prior art of comparing, the key distinction is that the intermediate support body in the technical program has adopted bearing with solid lubricant, being embedded in graphite in the bearing with solid lubricant has good in slip, in cooperating with conveying axis, not only play good supporting role, and need not to pour into lubricating oil (fat) and just can between axle and hole, form lubricating film, break through the boundary that general bearing relies on the oil film grease lubrication, realized oil-free self lubrication; Secondly; in use; make solid lubrication and axle friction by frictional heating; form oil, powder and deposit lubricated lubricating condition; both protect axle not wear and tear, kept again the solid lubrication characteristic, greatly improved the defective of prior art axle, hole serious wear; the maintenance use cost is low, has embodied technological advance.

Preferred technical scheme: be applicable to the center support mechanism of feed helicallobe feedway, it is characterized in that described metal body adopts high-tensile strength brass.

Further technique effect: high-tensile strength brass has good mechanical property, and copper alloy and non-metal antifriction material are had complementary advantages separately, guarantees that namely self-lubricating has further improved again the bearing strength of bearing.

Preferred technical scheme: be applicable to the center support mechanism of feed helicallobe feedway, described graphite is the solid lubricant that a kind of high purity graphite and additive mix.

Further technique effect: add the self-lubricating that additive is conducive to improve graphite.

Description of drawings

Fig. 1 is the axial sectional structure schematic diagram of the utility model.

Fig. 2 is the D-D cutaway view of Fig. 1.

Fig. 3 is the axial sectional structure schematic diagram of parts bearing with solid lubricant.

Fig. 4 is the B-B cutaway view of Fig. 3.

1. front coupling spindle.

2. rear coupling spindle.

3. outside fixed connecting piece, 31. bearing mounting holes.

4. bearing with solid lubricant, 41. bodies, 42. graphite.

6. blade.

The specific embodiment

Below in conjunction with accompanying drawing the specific embodiment of the present utility model is elaborated, further illustrate advantage of the present utility model and with respect to the outstanding contributions of prior art, understandable, following embodiment only is the detailed description to the better embodiment of the utility model, should not be construed as any restriction to technical solutions of the utility model.

As shown in Figure 1, 2, the blade 6 for delivery of feed is arranged on the forward and backward coupling spindle 1,2 supporting forward and backward coupling spindle 1,2 in the fixed connecting piece 3 outside bearing with solid lubricant 4 is installed in bearing mounting hole 31 interference fit.

Shown in Fig. 3,4, bearing with solid lubricant 4 is whole cylindrical, and its body 41 adopts the high-tensile strength brass material, has some through holes on the basis that does not reduce body 41 intensity, filled stone ink material 42 in this through hole, this graphite 42 are solid lubricants that a kind of high purity graphite and additive mix.When forward and backward coupling spindle 1,2 cooperates with bearing with solid lubricant 4; because the existence of graphite 42; the conveying axis of High Rotation Speed and bearing with solid lubricant 4 inside faces can form lubricating film; like this; copper alloy and non-metal antifriction material are had complementary advantages separately; both had very high load-carrying capacity, and protected again axle not wear and tear, kept the solid lubrication characteristic.According to existing experiment, the high-mechanic pressure of present design ²⁹/ ₍₁₀₀₎N/mm ²Maximum linear velocity 0.5/(1.0) m/s; Friction coefficient 0.16/(0.08); Compressive strength 755≤mm ²Hardness HB210-235; Coefficient of expansion 19 * 10 ^-6/ ℃; Temperature-40 is to 300 ℃.Assembling is by continuous operation 718 hours, without killing or other infringement wear phenomenons center support mechanism and conveying axis no-float.

The utility model structure design is simple, utilize graphite from slip, advantage in conjunction with copper alloy and non-metal antifriction material, make intermediate support body in high dust atmosphere, enough bearing strengths are namely arranged, can realize again lubricating between axle, the hole, reduce the maintenance use cost of intermediate support body, embody technological advance.

Claims (3)

1. be applicable to the center support mechanism of feed helicallobe feedway, comprise front coupling spindle (1), rear coupling spindle (2) and the outside fixed connecting piece (3) that is furnished with bearing mounting hole (31), characterized by further comprising a bearing with solid lubricant (4) that is installed in the described bearing mounting hole (31), it matches with forward and backward coupling spindle (1,2).

2. the center support mechanism that is applicable to feed helicallobe feedway according to claim 1 is characterized in that described bearing with solid lubricant (4) comprises body (41) and is embedded in graphite (42) in the body (41).

3. the center support mechanism that is applicable to feed helicallobe feedway according to claim 2 is characterized in that described body (41) adopts high-tensile strength brass.

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