CN219580625U - Pure liquid explosion type impactor - Google Patents

Abstract

The utility model discloses a pure liquid explosion type impactor, which comprises: the device comprises a nitrogen chamber, a piston, a cylinder body, a drill rod seat, a drill rod and a long bolt; the piston reciprocates in the cylinder body to strike the drill rod; the drill rod is arranged in the drill rod seat; the long bolt is used for fastening and connecting the nitrogen chamber, the cylinder body and the drill rod seat. The cylinder body is in an intersecting structure of two cylindrical surfaces, and a main hole for installing a piston and a valve hole for installing a reversing valve are respectively arranged in the two cylindrical surfaces; the cylindrical surface provided with the valve hole is transited to the cylindrical surface provided with the main hole through an inclined plane; and oil inlets and oil outlets are arranged on two sides of the cylindrical surface provided with the valve hole. Solves the problems of uneven distribution, heavy weight and material waste of the cylinder body material, and ensures that the wall thickness between the shape of the cylinder body and the cavity is uniform and the strength is high.

Description

Pure liquid explosion type impactor

Technical Field

The utility model relates to an engineering machinery accessory, in particular to a pure liquid explosion type impactor.

Background

The pure liquid explosion type impactor is an impact tool for converting hydraulic energy into mechanical energy, wherein the impact tool is provided with two basic movement elements, namely a piston and a reversing valve, which are mutually feedback controlled, namely the reciprocating movement of a valve core controls the reversing of the piston, and the piston realizes the reversing of the valve core at the beginning and the end of each stroke by opening or closing a control oil way of the reversing valve, so that the circular operation is realized. The basic working principle of the pure liquid explosion type impactor is as follows: through the feedback control of the piston and the valve core, the piston can rapidly reciprocate under the drive of hydraulic pressure or hydraulic pressure and pneumatic pressure and strike the drill rod to do work.

To break stone, concrete and other building materials, a pure liquid blast impactor may be attached to various machines, such as an excavator, backhoe or other similar machine. The pure liquid blast impactor is mounted to the arm of the machine and connected to a hydraulic system. The high-pressure fluid in the hydraulic system is supplied to the pure liquid explosion type impactor to drive the piston contacted with the working tool to reciprocate and strike the working tool to complete the crushing task.

The hammer core (fig. 1 and 2) of the pure liquid explosion type impactor mainly comprises: the nitrogen chamber 1, the piston ring 2, the piston 3, the cylinder body 4, the drill rod seat 5, the inner sleeve 6, the outer sleeve 7, the drill rod 8 and the reversing valve 9. The return movement starts (fig. 1), and the high-pressure oil P enters the front cavity 10 through the oil port a4 and acts on the lower end of the valve core of the reversing valve 9 at the same time, so that the valve core is stably in the state shown in fig. 1. At this time, the front cavity 10 is communicated with high-pressure oil P, the rear cavity 11 is communicated with oil T through an oil port a1, the piston 3 is driven by the high-pressure oil P in the front cavity 10 to accelerate return stroke and compress nitrogen in the nitrogen chamber 1 to store energy, when the piston 3 moves to the front cavity 10 to be communicated with the control oil port a3 in a return stroke mode, the high-pressure oil P reaches the upper end of the valve core, at this time, the upper end and the lower end of the valve core are communicated with the high-pressure oil, because the effective area of the upper end of the valve core is larger than the effective area of the lower end in the design, the valve core is commutated to a state of a figure (2) under the action of the high-pressure oil, at this time, the front cavity and the rear cavity are communicated with the high-pressure oil P, and the piston 3 is accelerated in stroke under the action of nitrogen pressure and oil pressure to strike the drill rod 8 to output impact energy. When the piston 3 passes through the striking point, the control ports a2 and a3 are communicated and communicated with the oil return T, the upper end of the valve core of the reversing valve 9 is decompressed, the valve core is rapidly reversed to the state of the figure (1) under the action of the oil pressure at the lower end, the initial state is restored, the piston 3 starts to return, and the next striking cycle is started, and the process is repeated. The drill rod seat 5 is provided with a drill rod 8 for breaking rock, an inner sleeve 6 and an outer sleeve 7 which play a guiding role, and meanwhile, the inner sleeve 6 and the outer sleeve 7 have the function of protecting the drill rod seat 5 from being worn.

Wherein, the nitrogen chamber 1, the cylinder body 4 and the drill rod seat 5 all have the phenomena of uneven material distribution, large weight and material waste.

Disclosure of Invention

Aiming at the prior art, the utility model provides a pure liquid explosion type impactor with uniform material distribution, high strength and light weight.

The utility model provides a pure liquid explosion type impactor. Comprising the following steps: the device comprises a nitrogen chamber, a piston, a cylinder body, a drill rod seat, an inner sleeve, an outer sleeve, a drill rod and a long bolt. The piston reciprocates in the cylinder body to strike the drill rod; the drill rod seat is internally provided with a drill rod for breaking rock, an inner sleeve and an outer sleeve which play a role in guiding, and meanwhile, the inner sleeve and the outer sleeve have the role in protecting the drill rod seat from being worn; the long bolt is used for fastening and connecting the nitrogen chamber, the cylinder body and the drill rod seat. The cylinder body is internally provided with a cavity (main hole) for installing a piston and a cavity (valve hole) for installing a reversing valve, the axes of the two cavities are parallel to each other, the two cavities are projected into a circle on a plane perpendicular to the axes, and the circle is separated from the circle (the two circles have no intersection point and one circle is outside the other circle); the cylinder body is in a structure of two intersecting cylindrical surfaces close to the nitrogen chamber, and a main hole for installing a piston and a valve hole for installing a reversing valve are respectively arranged in the two cylindrical surfaces; the cylindrical surface provided with the valve hole is transited to the cylindrical surface provided with the main hole through an inclined plane; and oil inlets and oil outlets are arranged on two sides of the cylindrical surface provided with the valve hole.

The beneficial effects are that: the cylinder body has a cylindrical surface structure, so that the shape and the wall thickness of a cavity (the cavity of the piston and the reversing valve) are uniform, and the strength is high.

As a further improvement of the utility model, the drill rod seat is internally provided with a cavity, the drill rod seat is formed by splicing two cuboids with different sectional areas, and the two cuboids are in inclined plane transition.

The beneficial effects are that: under the condition of meeting the working condition, the weight of the drill rod seat is reduced.

As a further improvement of the utility model, the nitrogen chamber is formed by splicing a cylinder and a cuboid, a semi-cylindrical surface is arranged on the cuboid for positioning the reversing valve, the reversing valve is blocked in the cylinder body, and a cavity is arranged in the nitrogen chamber.

The beneficial effects are that: under the condition of meeting the working condition, the weight of the nitrogen chamber is reduced, and meanwhile, the length of the long bolt is shortened.

As a further improvement of the utility model, the long bolts are distributed outside the cylinder body.

The beneficial effects are that: the structural size of the cylinder body is reduced.

Drawings

Fig. 1 is a schematic diagram of a conventional pure liquid explosion type impactor.

Fig. 2 is a schematic diagram of a conventional pure liquid explosion type impactor.

Fig. 3 is a perspective view of a pure liquid explosion impactor of the utility model.

Fig. 4 is a front view and a cross-sectional view of a pure liquid explosion impactor of the utility model.

Fig. 5 is a block diagram of the cylinder of the present utility model.

Figure 6 is a perspective view of the cylinder of the present utility model.

Fig. 7 is a perspective view of the drill rod holder of the present utility model.

FIG. 8 is a perspective view of a nitrogen chamber of the present utility model.

Reference numerals: 1 nitrogen chamber 2 piston ring 3 piston 4 cylinder 5 drill rod seat 6 inner sleeve 7 outer sleeve 8 drill rod 9 reversing valve 10 front cavity 11 back cavity 12 long bolt 13 valve hole 14 main 15 cylindrical surface one 16 cylindrical surface two 17 oil inlet 18 oil outlet 19 inclined surface 20 cuboid one 21 cuboid two 22 semi-cylindrical surface 23 cuboid three 24 cylindrical surface three

Description of the embodiments

The following describes the embodiments of the present utility model in further detail with reference to the drawings (fig. 3, 4, 5, 6, 7, 8).

A pure liquid explosion type impactor. Comprising the following steps: the nitrogen chamber 1, the piston 3, the cylinder body 4, the drill rod seat 5, the inner sleeve 6, the outer sleeve 7, the drill rod 8 and the long bolt 12. The piston 3 reciprocates in the cylinder body 4 to strike the drill rod 8; the drill rod seat 5 is internally provided with a drill rod 8 for breaking rock, an inner sleeve 6 and an outer sleeve 7 which play a guiding role, and meanwhile, the inner sleeve 6 and the outer sleeve 7 have the function of protecting the drill rod seat 5 from being worn; the long bolt 12 fastens and connects the nitrogen chamber 1, the cylinder body 4 and the drill rod seat 5. The cylinder body 4 is internally provided with a cavity (main hole) for installing the piston 3 and a cavity (valve hole) for installing the reversing valve 9, the axes of the two cavities are parallel to each other, the two cavities are projected into a circle on a plane perpendicular to the axes, and the circle is separated from the circle (the two circles have no intersection point and one circle is outside the other circle); the cylinder body 4 is close to the nitrogen chamber 1 and has the shape of two intersecting cylindrical surfaces (a cylindrical surface I15 and a cylindrical surface II 16), a valve hole 13 for installing the reversing valve 9 is arranged in the cylindrical surface I15, and a main hole 14 for installing the piston 3 is arranged in the cylindrical surface II 16; the cylindrical surface I15 is transited to the cylindrical surface II 16 through the inclined surface 19; an oil inlet 17 and an oil outlet 18 are arranged on two sides of the cylindrical surface I15.

Preferably (fig. 7), the drill rod seat 5 is internally provided with a cavity, the appearance is formed by splicing a cuboid I20 and a cuboid II 21, and the sectional area of the cuboid II 21 is larger than that of the cuboid I20.

Preferably (fig. 8), the appearance of the nitrogen chamber 1 is formed by splicing a cuboid three 23 and a cylindrical surface three 24, a semi-cylindrical surface 22 is arranged on the cuboid three 23 and used for positioning the reversing valve 9, the reversing valve 9 is blocked in the cylinder body 4, and a cavity is arranged in the nitrogen chamber 1.

Preferably (fig. 3), the long bolts 12 are distributed outside the cylinder 4.

Claims (4)

1. The pure liquid explosion type impactor comprises a nitrogen chamber (1), a piston (3), a cylinder body (4), a drill rod seat (5), a drill rod (8) and a long bolt (12); the piston (3) reciprocates in the cylinder body (4) to strike the drill rod (8); the drill rod (8) is arranged in the drill rod seat (5); the long bolt (12) is used for fastening and connecting the nitrogen chamber (1), the cylinder body (4) and the drill rod seat (5), and is characterized in that: the cylinder body (4) is close to the nitrogen chamber (1) and has the shape of a structure in which a cylindrical surface I (15) and a cylindrical surface II (16) are intersected, a valve hole (13) for installing a reversing valve (9) is formed in the cylindrical surface I (15), and a main hole (14) for installing a piston (3) is formed in the cylindrical surface II (16); the cylindrical surface I (15) is transited to the cylindrical surface II (16) through the inclined surface (19); an oil inlet (17) and an oil outlet (18) are arranged on two sides of the cylindrical surface I (15).

2. The pure liquid blast impactor of claim 1, wherein: the drill rod seat (5) is internally provided with a cavity, the appearance is formed by splicing a cuboid I (20) and a cuboid II (21), and the sectional area of the cuboid II (21) is larger than that of the cuboid I (20).

3. The pure liquid blast impactor of claim 1, wherein: the appearance of the nitrogen chamber (1) is formed by splicing a cuboid III (23) and a cylindrical surface III (24), and a semi-cylindrical surface (22) is arranged on the cuboid III (23).

4. The pure liquid blast impactor of claim 1, wherein: the long bolts (12) are distributed outside the cylinder body (4).