CN202348882U

CN202348882U - Novel connecting pin shaft of hydraulic breaker

Info

Publication number: CN202348882U
Application number: CN2011204428015U
Authority: CN
Inventors: 张春生; 梁文生; 陈友军
Original assignee: JIANGSU LIBOSHI MACHINERY CO Ltd
Current assignee: JIANGSU LIBOSHI MACHINERY CO Ltd
Priority date: 2011-11-09
Filing date: 2011-11-09
Publication date: 2012-07-25
Anticipated expiration: 2021-11-09

Abstract

The utility model discloses a novel connecting pin shaft of a hydraulic breaker, belonging to the technical field of engineering machinery. The novel connecting pin shaft is composed of a pin shaft body, an ear plate, MC (monomer casting) nylon and a shaft top, wherein the shaft top is arranged at the top end of the pin shaft body; the ear plate is arranged at the tail end of the pin shaft body; the upper part and the lower part form a symmetrical structure; the MC nylon is arranged on the pin shaft body; a round groove of 6*30 is arranged on the pin shaft body, and the depth of the round groove is 3-5mm; and the MC nylon is arranged in the round groove, adopts a monomer casting mode, is turned to meet the requirement of the design size, and has the advantages of good comprehensive performance, high strength, rigidity and hardness, good creep resistance, wear resistance, thermal aging resistance and machining performance, and the like. According to the novel connecting pin shaft of the hydraulic breaker, the service life of the pin shaft is prolonged, the noise in use of equipment is reduced, manual regular oil lubrication of a pin shaft sliding contact part is replaced with MC nylon self lubrication, the maintenance and labor costs are lowered, and middle frequency induction hardening and grinding are cancelled in a new process at the same time, so that the manufacturing cost of the pin shaft is reduced by 24%.

Description

The novel connection bearing pin of hydraulic burster

Technical field

The utility model relates to a kind of pin shaft structure that is applied to the engineering machinery hydraulic quartering hammer, relates in particular to the novel connection bearing pin of a kind of hydraulic burster.

Background technique

The New Hydraulic Impact Machine that hydraulic breaking hammer grew up the sixties in last century; With the oil hydraulic pump is power source; Oil liquid pressure is a power, and reciprocating motion of the pistons output impulse machine utilizes high-speed motion to impact bit shank; Carry out crushing operation, obtained using comparatively widely with the mining circle in the engineering field.

Hydraulic burster is a kind of new and effective hydraulic shock vibration facility; Be auxiliary work parts of excavator or loader; Realize the high frequency to-and-fro motion of destroyer piston in cylinder body with the high pressure oil of machine tool output during work, thereby hit drill steel, externally acting.

Hydraulic burster is widely used in fields such as metallurgy, mine, railway, highway, building, urban construction, house exploitation, to hard thing such as rock, concrete, ladle, slag, frozen soil, ice cube, cement pavement, bridge pier, building exploit, operation such as fragmentation, dismounting.

The hydraulic burster bearing pin is the strength member that hydraulic shovel is connected with hydraulic burster; Because hydraulic burster work under bad environment; Often work in the strong dust atmosphere; Aggravated to be slidingly connected the wearing and tearing at position, wearing and tearing have strengthened the mechanical engagement gap that is slidingly connected the position, and a large amount of dust get into the wearing and tearing that aggravated bearing pin in the gap again; Reduce on the one hand the mechanical strength of bearing pin, increased the operating noise of hydraulic burster on the other hand, reduced the accurate positioning property of hydraulic burster striking point after the mechanical engagement gap is strengthened simultaneously.

In existing hydraulic burster product; Hitting dynamics is to weigh the key technical indexes of hydraulic burster performance; How to increase its hitting dynamics; Be the tireless R&D direction of designer, the factor of hydraulic burster hitting power depends primarily on following several respects: (1), working pressure are low excessively, underfed; (2), back body nitrogen pressure is low excessively; (3), drawback such as high pressure nitrogen underpressure.

In addition; At present traditional industries are made the technology that hydraulic burster connects bearing pin and are: bearing pin is modified+and turning+mid frequency induction hardening+cylindrical grinding+processes such as welding; The link of mid frequency induction hardening+cylindrical grinding wherein is relatively harsher; If firepower is not enough or mill is cut carefully inadequately, machining allowance becomes scrap inadequately, and machining allowance is excessive to increase drawback such as manufacture cost again.

Summary of the invention

In order to solve deficiency of the prior art; The utility model provides a kind of hydraulic burster novel connection bearing pin; Have that topology layout is reasonable, in light weight, intensity is high, selflubricating, wear-resisting, anticorrosion, improved bearing pin working life, reduced the advantages such as noise when equipment uses.

The utility model is to realize through following technological scheme:

The novel connection bearing pin of hydraulic burster, its structure is made up of: bearing pin body, otic placode, MC nylon, axle top part, and the axle top is arranged at the top of bearing pin body, and otic placode is arranged at the tail end of bearing pin body, is symplex structure up and down, and MC nylon is arranged on the bearing pin body.

Described bearing pin body which is provided with 6 * 30 circular groove, groove depth 3～5mm.

Described MC nylon is arranged in the circular groove, and it adopts the monomer pouring type, and turning reaches the requirement of design size, its good combination property, advantage such as intensity, rigidity and hardness are high, and creep resistant, wear-resisting, heat-proof aging, machinability are good.

Behind the MC nylon and the compound new structure form of metal bearing pin that the utility model adopts; Because the molecular weight of MC nylon is up to 7～100,000; Be general nylon 6, nylon 66 3 times; MC nylon is in light weight, intensity is high, selflubricating, wear-resisting, anticorrosion, and the friction factor of MC nylon is lower 8.8 times than steel, than low 8.3 times of copper, is the excellent engineering material of " to mould Dai Gang ".

MC nylon is applied to bearing pin, has improved bearing pin working life, has reduced equipment and has used noise, and the pin slide contact position has replaced manual regular oily by the selflubricating of MC nylon, has reduced cost of upkeep and cost of labor; Simultaneously thereby new process has been cancelled the manufacture cost 24% that mid frequency induction hardening and grinding have reduced bearing pin.

The production technology of the utility model: bearing pin is modified+turning+groove milling+welding+MC cast+turning, thereby new process has been cancelled the manufacture cost 24% that mid frequency induction hardening and grinding have reduced bearing pin simultaneously.

Description of drawings

Fig. 1, be the structural representation of the utility model;

Fig. 2, be the structural representation that tradition connects bearing pin.

Among the figure: 1-bearing pin body, 2-otic placode, 3-MC nylon, 4-axle top.

Embodiment:

Below in conjunction with accompanying drawing and embodiment the utility model is further specified:

Like Fig. 1,2, the novel connection bearing pin of hydraulic burster, its structure is made up of: bearing pin body 1, otic placode 2, MC nylon 3, axle top 4 parts; Axle top 4 is arranged at the top of bearing pin body 1; Otic placode 2 is arranged at the tail end of bearing pin body 1, is symplex structure up and down, and MC nylon 3 is arranged on the bearing pin body 1.

Described bearing pin body 1 which is provided with 6 * 30 circular groove, groove depth 3～5mm.

Described MC nylon 3 is arranged in the circular groove, and it adopts the monomer pouring type, and turning reaches the requirement of design size, its good combination property, advantage such as intensity, rigidity and hardness are high, and creep resistant, wear-resisting, heat-proof aging, machinability are good.

What should explain at last is: above specification is only in order to explain the technological scheme and the use characteristic of the utility model; Although this specification has carried out detailed explanation with reference to the above embodiments to the utility model; But; Those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the utility model; And all do not break away from the technological scheme and the improvement thereof of the spirit and the scope of the utility model, and it all should be encompassed in the claim scope of the utility model.

Claims

1. the novel connection bearing pin of hydraulic burster; It is characterized in that: its structure is made up of: bearing pin body [1], otic placode [2], MC nylon [3], axle top [4] parts; Axle top [4] is arranged at the top of bearing pin body [1]; Otic placode [2] is arranged at the tail end of bearing pin body [1], is symplex structure up and down, and MC nylon [3] is arranged on the bearing pin body [1].

2. the novel connection bearing pin of hydraulic burster as claimed in claim 1 is characterized in that: described bearing pin body [1] which is provided with 6 * 30 circular groove, groove depth 3～5mm.

3. the novel connection bearing pin of hydraulic burster as claimed in claim 1 is characterized in that: described MC nylon [3] is arranged in the circular groove.