CN215562935U

CN215562935U - Swash plate for excavator

Info

Publication number: CN215562935U
Application number: CN202121489514.XU
Authority: CN
Inventors: 范小亮; 丁洋; 马建华
Original assignee: Nantong Huadong Hydraulic Technology Co Ltd
Current assignee: Nantong Huadong Hydraulic Technology Co Ltd
Priority date: 2021-07-02
Filing date: 2021-07-02
Publication date: 2022-01-18
Anticipated expiration: 2031-07-02

Abstract

The utility model discloses a swash plate for a excavator, which comprises a swash plate main body, wherein one end of the swash plate main body is provided with six groups of concave holes, the top end and the bottom end of the swash plate main body are fixedly connected with two groups of connecting lugs, fixing holes are formed in the connecting lugs, through holes are formed in the swash plate main body, iron oxide red is arranged in the swash plate main body, and the top end and the bottom end of the other end of the swash plate main body are fixedly connected with two groups of clamping plates. This dig machine swash plate and pass through iron oxide red, when carrying out the foundry goods to the swash plate main part, add iron oxide red in the sand casing, what the swash plate main part was whole to be adopted is nodular cast iron, the material itself has higher mild and toughness, add the pore defect that iron oxide red can produce when firmly solving the foundry goods, can also improve the wearability and the corrosion resistance of swash plate main part simultaneously, the effect that the swash plate main part used has been strengthened, the life of swash plate main part has been improved, there is the problem of pore defect when having solved the foundry goods.

Description

Swash plate for excavator

Technical Field

The utility model relates to the technical field of swash plate castings, in particular to a swash plate for an excavator.

Background

The hydraulic pump in the excavator is a power element in a hydraulic system, the reciprocating stroke of the piston movement is increased or reduced by changing the inclination angle of the swash plate through the hydraulic pump, so the swash plate is one of essential parts in the hydraulic system, but the existing swash plate has a defect problem in the casting process, for example, the swash plate easily has a pore defect when the casting is processed, the casting is easy to deform when the casting shrinks, or the tightness of the swash plate is poor, so that the sensitivity and the like of the swash plate are influenced, and therefore the excavator swash plate with enhanced stability is developed to solve the existing problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a sloping cam plate for a digging machine, which aims to solve the problem of air hole defect when a casting is proposed in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: sloping cam plate for excavator, including the sloping cam plate main part, the one end of sloping cam plate main part is provided with six shrinkage pools of group, the top and the two sets of engaging lug of bottom fixedly connected with of sloping cam plate main part, the inside of engaging lug is provided with the fixed orifices, the inside of sloping cam plate main part is provided with the through-hole, the inside of sloping cam plate main part is provided with iron oxide red, the top and the two sets of splint of bottom fixedly connected with of sloping cam plate main part other end, the inside of splint is provided with four groups of rolling grooves, the inside of rolling groove is provided with the ball.

Preferably, the concave holes are provided with six groups, and the concave holes are distributed at one end of the swash plate main body in an annular mode.

Preferably, the width of the outer diameter of the through hole is smaller than the width of the inner diameter of the swash plate body.

Preferably, the connecting lugs are arranged in two groups and are symmetrically distributed about the vertical center line of the swash plate main body.

Preferably, the ball is provided with four groups, and the ball is distributed in the splint at equal intervals.

Preferably, the rolling grooves are provided with four groups, the width of the outer part of the ball is smaller than that of the inner part of the rolling groove, and the ball is embedded in the inner part of the rolling groove.

Compared with the prior art, the utility model has the beneficial effects that: the swash plate for the excavator not only improves the strength and the wear resistance of the swash plate and the connection stability, but also improves the tightness of the swash plate;

(1) when the swash plate main body is cast through the iron oxide red, the iron oxide red is added into the sand shell, the swash plate main body is integrally made of nodular cast iron, the material per se has higher lightness and toughness, the defect of air holes generated in casting can be overcome by adding the iron oxide red, meanwhile, the wear resistance and corrosion resistance of the swash plate main body can be improved, the using effect of the swash plate main body is enhanced, and the service life of the swash plate main body is prolonged;

(2) the swash plate main body is fixedly arranged on the hydraulic pump through the connecting lug through the fixing hole and the connecting lug, the fixing hole arranged in the connecting lug can support the connecting piece to penetrate through the hydraulic pump and the swash plate main body to realize stable connection, the fixing hole comprises a convex surface with a certain size, a screw or a bolt for connection can be embedded in the fixing hole, the convex part is reduced, and the structure improves the connection stability of the swash plate main body;

(3) through splint, ball and rolling slot, the splint and the hydraulic pump contact of sloping cam plate main part one end, the inside ball of splint rolls at the junction, and the frictional force of sloping cam plate main part and junction diminishes, has also reduced the wearing and tearing of sloping cam plate main part self simultaneously for the sloping cam plate main part compresses tightly the pressure disk more easily, has improved the compactness that the sloping cam plate main part compressed tightly.

Drawings

FIG. 1 is a schematic front sectional view of the present invention;

FIG. 2 is a side sectional view of the swash plate body of the present invention;

FIG. 3 is a side view partially in section of the swash plate body of the present invention;

fig. 4 is an enlarged partial sectional view of a portion a in fig. 2 according to the present invention.

In the figure: 1. a swash plate main body; 2. concave holes; 3. a fixing hole; 4. iron oxide red; 5. a through hole; 6. connecting lugs; 7. a splint; 8. a ball bearing; 9. and (4) rolling the groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1: referring to fig. 1-4, the swashplate for the excavator comprises a swashplate main body 1, wherein six groups of concave holes 2 are formed in one end of the swashplate main body 1, six groups of concave holes 2 are formed in the concave holes 2, the concave holes 2 are distributed at one end of the swashplate main body 1 in an annular manner, a through hole 5 is formed in the swashplate main body 1, the width of the outer diameter of the through hole 5 is smaller than that of the inner diameter of the swashplate main body 1, and iron oxide red 4 is arranged in the swashplate main body 1;

specifically, as shown in fig. 1 and 2, when the swash plate main body 1 is cast, iron oxide red 4 is added into a sand shell, the whole swash plate main body 1 is made of nodular cast iron, the material per se has high lightness and toughness, the iron oxide red 4 is added to overcome the air hole defect generated during casting, the wear resistance and corrosion resistance of the swash plate main body 1 can be improved, the use effect of the swash plate main body 1 is enhanced, and the service life of the swash plate main body 1 is prolonged.

Example 2: the top end and the bottom end of the swash plate main body 1 are fixedly connected with two groups of connecting lugs 6, the two groups of connecting lugs 6 are symmetrically distributed about the vertical central line of the swash plate main body 1, and fixing holes 3 are formed in the connecting lugs 6;

specifically, as shown in fig. 1 and 3, the swash plate main body 1 is fixedly mounted on the hydraulic pump through the connecting lug 6, the fixing hole 3 arranged inside the connecting lug 6 can support the connecting piece to penetrate through to realize the stable connection between the hydraulic pump and the swash plate main body 1, the fixing hole 3 contains a convex surface with a certain size, a screw or a screw for connection can be embedded inside, the convex part is reduced, and the structure improves the connection stability of the swash plate main body 1.

Example 3: the top and the bottom of the other end of the swash plate main body 1 are fixedly connected with two groups of clamping plates 7, four groups of rolling grooves 9 are formed in the rolling grooves 9, the width of the outer part of each ball 8 is smaller than that of the inner part of each rolling groove 9, the balls 8 are embedded in the rolling grooves 9, the balls 8 are arranged in the rolling grooves 9, the four groups of balls 8 are arranged, and the balls 8 are distributed in the clamping plates 7 at equal intervals;

specifically, as shown in fig. 1 and 4, the clamp plate 7 at one end of the swash plate body 1 is in contact with the hydraulic pump, the balls 8 inside the clamp plate 7 roll at the joint, the friction force between the swash plate body 1 and the joint is reduced, and meanwhile, the abrasion of the swash plate body 1 is reduced, so that the swash plate body 1 can more easily compress the pressure plate, and the compression tightness of the swash plate body 1 is improved.

The working principle is as follows: when the utility model is used, firstly, when the swash plate main body 1 is cast, the iron oxide red 4 is added in the sand shell, the whole swash plate main body 1 is made of nodular cast iron, the material per se has higher lightness and toughness, the iron oxide red 4 is added to overcome the defect of air holes generated during casting, and simultaneously, the wear resistance and the corrosion resistance of the swash plate main body 1 can be improved, then the swash plate main body 1 is connected with the hydraulic pump by the connecting piece penetrating through the fixing hole 3 in the connecting lug 6, finally the clamp plate 7 at one end of the swash plate main body 1 is contacted with the hydraulic pump, the ball 8 in the clamp plate 7 rolls at the joint, the friction force between the swash plate main body 1 and the joint is reduced, meanwhile, the abrasion of the swash plate main body 1 is reduced, so that the swash plate main body 1 can press the pressure plate more easily, the structure not only improves the compaction of the swash plate main body 1, but also enhances the use strength and the wear resistance of the swash plate main body 1.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. Dig sloping cam plate for machine, including sloping cam plate main part (1), its characterized in that: the one end of sloping cam plate main part (1) is provided with six shrinkage pools (2), the top and the two sets of engaging lug (6) of bottom fixedly connected with of sloping cam plate main part (1), the inside of engaging lug (6) is provided with fixed orifices (3), the inside of sloping cam plate main part (1) is provided with through-hole (5), the inside of sloping cam plate main part (1) is provided with iron oxide red (4), the top and the two sets of splint (7) of bottom fixedly connected with of sloping cam plate main part (1) other end, the inside of splint (7) is provided with four group rolling grooves (9), the inside of rolling groove (9) is provided with ball (8).

2. The swashplate of claim 1, wherein: the swash plate is characterized in that six groups of concave holes (2) are arranged, and the concave holes (2) are distributed in an annular mode at one end of the swash plate main body (1).

3. The swashplate of claim 1, wherein: the width of the outer diameter of the through hole (5) is smaller than that of the inner diameter of the swash plate main body (1).

4. The swashplate of claim 1, wherein: the two groups of connecting lugs (6) are arranged and are symmetrically distributed about the vertical center line of the swash plate main body (1).

5. The swashplate of claim 1, wherein: the four groups of balls (8) are arranged, and the balls (8) are distributed in the clamping plate (7) at equal intervals.

6. The swashplate of claim 1, wherein: four groups of rolling grooves (9) are arranged, the width of the outer part of the ball (8) is smaller than that of the inner part of the rolling groove (9), and the ball (8) is embedded in the inner part of the rolling groove (9).