CN204282425U - A kind of dozer assembly and excavator - Google Patents

Abstract

The utility model provides a kind of dozer assembly and excavator.Dozer assembly comprises: the first hydraulic cylinder and the second hydraulic cylinder that are installed on link both sides respectively; The first piston bar of the first hydraulic cylinder is hinged by one end of the first pin and dozer body; Second piston rod of the second hydraulic cylinder is hinged by the other end of the second pin and dozer body; Dozer body at least comprises two states: during the first state, and the length that first piston bar and the second piston rod stretch out is equal; During the second state, not etc., dozer body does not rotate to the side of stretching out shorter piston rod the length that first piston and the second piston rod stretch out.The job area of what the utility model provided increase middle-size and small-size hydraulic crawler excavator dozer, increase operating flexibility, dozer can freely be rotated in the horizontal direction, the direction of adjustment operation, without the need to rotating the job area of excavator and convertible excavator, thus alleviate the operation intensity of driver.

Description

Bulldozer blade assembly and excavator

technical field

The utility model relates to the field of excavators, in particular to a bulldozing shovel assembly and an excavator.

Background technique

As an important construction machine, excavators are playing an increasingly important role in production.

Referring to Figure 1, in the prior art, the bulldozing blade is fixedly connected to the body of the excavator, and the bulldozing/leveling of the small and medium-sized hydraulic excavator equipped with the bulldozing blade is limited by its own design, and can only work in one direction. The scope of work is limited.

Utility model content

In order to overcome the technical problem in the prior art that the working direction of the bulldozing blade can only be changed by driving the body of the excavator, and the working range cannot be changed by itself, the utility model provides a bulldozing blade assembly and an excavator.

In order to solve the above technical problems, the utility model adopts the following technical solutions:

The utility model provides a bulldozing shovel assembly, which comprises a bulldozing shovel body and a connecting frame, the bulldozing shovel body is connected with the excavator main frame through the connecting frame, and the bulldozing shovel assembly also includes:

The first hydraulic cylinder and the second hydraulic cylinder respectively installed on both sides of the connecting frame;

The first piston rod of the first hydraulic cylinder is hinged to one end of the bulldozing blade body through a first pin;

The second piston rod of the second hydraulic cylinder is hinged to the other end of the bulldozing blade body through a second pin;

The bulldozing blade body has at least two states: in the first state, the protruding lengths of the first piston rod and the second piston rod are equal; in the second state, the first piston and the second piston rod The extended lengths of the two piston rods are not equal, and the bulldozing blade body rotates to the side where the shorter piston rod is extended.

Further, the bulldozing blade assembly also includes:

The third pin is arranged at the middle position of the end of the connecting frame, and the connecting frame is hinged with the middle part of the bulldozer body through the third pin; the first hydraulic cylinder and the second hydraulic cylinder Symmetrical about the third pin.

Further speaking, in the bulldozing blade assembly, a horizontal guard plate is installed on the upper and lower sides of the first hydraulic cylinder and the second hydraulic cylinder.

Furthermore, in the bulldozer blade assembly, the oil circuits of the first hydraulic cylinder and the second hydraulic cylinder are both connected to the main hydraulic oil circuit of the excavator.

The utility model also provides an excavator, including the bulldozing blade assembly described in any one of the above items.

The beneficial effects of the utility model are: the utility model provides an enlarged working scope of the bulldozing blade of the small and medium-sized hydraulic excavator, increases operational flexibility, enables the bulldozing blade to rotate freely in the horizontal direction, and adjusts the direction of the operation without Turning the excavator can change the working range of the excavator, thereby reducing the driver's work intensity.

Description of drawings

Fig. 1 represents the structural diagram of excavator bulldozing blade in the prior art;

Fig. 2 shows the normal working state schematic diagram of bulldozing blade assembly in the utility model embodiment;

Fig. 3 shows a schematic diagram of the working state when adjusting the angle of the bulldozing blade in the embodiment of the utility model.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Referring to Fig. 2 and Fig. 3, the utility model provides a bulldozing blade assembly, comprising a bulldozing blade body 10 and a connecting frame 20, the bulldozing blade body 10 is connected with the main frame of the excavator through the connecting frame 20, and the pushing The soil shovel assembly also includes: a first hydraulic cylinder and a second hydraulic cylinder 3 respectively installed on both sides of the connecting frame 20; One end is hinged; the second piston rod of the second hydraulic cylinder 3 is hinged with the other end of the bulldozer body 10 through the second pin 4; the bulldozer body includes at least two states: in the first state, the first piston rod and the second The protruding lengths of the two piston rods are equal; in the second state, the protruding lengths of the first piston and the second piston rod are not equal, and the bulldozing blade body 10 rotates to the side where the shorter piston rod protrudes. The bulldozer can be rotated freely in the horizontal direction to adjust the direction of operation, and the working range of the excavator can be changed without turning the excavator, thereby reducing the driver's work intensity.

The bulldozing blade body 10 is respectively hinged with the first hydraulic cylinder 1 and the second hydraulic cylinder 3 through two pins, and the first hydraulic cylinder 1 and the second hydraulic cylinder 3 are installed on the connecting frame 20 . Bulldozing blade body 10 includes two states, the first state of normal operation, the distance that two piston rods protrude is equal, bulldozer blade body 10 is parallel with the fuselage of excavator, bulldozer blade body 10 is toward excavator fuselage. Bulldoze directly in front of the . When the protruding length of one of the piston rods is greater than the protruding length of the other piston rod, the bulldozer blade turns to one side, and the bulldozer blade body 10 forms an angle with the vehicle body of the excavator. When the length that the piston rod of the first hydraulic cylinder 1 stretches out is greater than the length that the piston rod of the second hydraulic cylinder 3 stretches out, the bulldozing blade body 10 will move to the second hydraulic cylinder 3 under the promotion of the first hydraulic cylinder 1. One side is deflected, so that the bulldozing blade body 10 is at an angle to the body of the excavator, and the working range is adjusted flexibly, so that the driver does not need to adjust the position of the entire excavator, which greatly increases the efficiency and reduces the working intensity. . It should be noted that the first hydraulic cylinder 1 and the second hydraulic cylinder 3 need to act simultaneously to ensure smooth adjustment.

As an optimized design, the bulldozing blade assembly of the present utility model also includes: a third pin 6, which is arranged in the middle of the end of the connecting frame 20, and the connecting frame 20 passes through the middle part of the third pin 6 and the bulldozing blade body 10 hinged. The third pin 6 plays the role of reinforcement, providing a fixed point for the middle part of the bulldozing blade body 10, and the bulldozing blade body 10 can rotate with this fixed point as a rotation axis.

The first hydraulic cylinder 1 and the second hydraulic cylinder 3 are symmetrical about the third pin 6 . Symmetrical design ensures the matching of actions between components.

A horizontal guard plate 5 is installed on the upper and lower sides of the first hydraulic cylinder 1 and the second hydraulic cylinder 3 . The guard plate can also adopt a box-shaped design to wrap the entire hydraulic cylinder and leave an opening for the piston rod to enter and exit. Because the working environment of the excavator is complex, the bulldozing blade is often impacted by foreign matter. After the guard plate 5 is installed, the hydraulic cylinder and its piston rod are protected from the impact and pollution of foreign matter, and the service life is increased.

Both the oil circuits of the first hydraulic cylinder 1 and the second hydraulic cylinder 3 are connected with the main hydraulic oil circuit of the excavator. By installing a control device in the driver's cab, the main oil circuit of the excavator can charge and discharge oil to the first hydraulic cylinder 1 or the second hydraulic cylinder 3 to realize the adjustment of the bulldozing blade body 10 .

The utility model also provides an excavator, including the bulldozing blade assembly described in any one of the above items.

It should be noted that the excavator is an excavator including the above-mentioned bulldozing blade assembly, and the implementation of the above-mentioned bulldozing blade assembly is also applicable to the embodiment of the excavator, and can also achieve the same technical effect. No longer.

What has been described above is a preferred embodiment of the present utility model, and it should be pointed out that for those skilled in the art, some improvements and modifications can also be made without departing from the principles described in the present utility model. Within the protection scope of the present utility model.

Claims (5)

1. A dozer blade assembly, comprising a dozer blade body and a connecting frame, the dozer blade body is connected with the main frame of the excavator through the connecting frame, it is characterized in that the dozer blade assembly also includes : The first hydraulic cylinder and the second hydraulic cylinder respectively installed on both sides of the connecting frame; The first piston rod of the first hydraulic cylinder is hinged to one end of the bulldozing blade body through a first pin; The second piston rod of the second hydraulic cylinder is hinged to the other end of the bulldozing blade body through a second pin; The bulldozing blade body has at least two states: in the first state, the protruding lengths of the first piston rod and the second piston rod are equal; in the second state, the first piston and the second piston rod The extended lengths of the two piston rods are not equal, and the bulldozing blade body rotates to the side where the shorter piston rod is extended. 2. The bulldozing blade assembly according to claim 1, further comprising: The third pin is arranged at the middle position of the end of the connecting frame, and the connecting frame is hinged with the middle part of the bulldozer body through the third pin; the first hydraulic cylinder and the second hydraulic cylinder Symmetrical about the third pin. 3 . The bulldozing blade assembly according to claim 1 , characterized in that, the upper and lower sides of the first hydraulic cylinder and the second hydraulic cylinder are equipped with a horizontal guard plate. 4 . 4. The bulldozing blade assembly according to claim 1, characterized in that, the oil circuits of the first hydraulic cylinder and the second hydraulic cylinder are both connected to the main hydraulic oil circuit of the excavator. 5. An excavator, characterized in that it comprises the bulldozing blade assembly according to any one of claims 1-4.