CN210397278U

CN210397278U - Energy storage device

Info

Publication number: CN210397278U
Application number: CN201921308883.7U
Authority: CN
Inventors: 戴光荣
Original assignee: Loudi Jiahua Machinery Co ltd
Current assignee: Loudi Jiahua Machinery Co ltd
Priority date: 2019-08-13
Filing date: 2019-08-13
Publication date: 2020-04-24
Anticipated expiration: 2029-08-13

Abstract

The utility model discloses an energy storage device, it has the nitrogen gas export to process at shell upper wall central point, and it has hydraulic oil access & exit and stir the hole to put processing at shell bottom wall central point. The inflation connector is in threaded connection with a central hole of the protruding head at the top end of the shell, the protective cap is in threaded connection with the outer wall of the protruding head at the top end of the shell, the inner groove at the middle end of the inner cavity of the shell is embedded with the elastic diaphragm, and the central part of the lower side surface of the elastic diaphragm is provided with the plugging plate. The inner shell is in threaded connection with the inner wall of the lower end of the outer shell, the outer edge of the elastic diaphragm is located at the contact position of the outer shell and the inner shell, and the lower sealing ring is arranged in the circular groove opening in the bottom end face of the inner shell. A nitrogen cavity A is arranged between the upper inner cavity of the outer shell and the elastic diaphragm, and a hydraulic oil cavity B is arranged between the elastic diaphragm and the lower inner cavity of the inner shell. The improved connection structure of the energy accumulator can reduce the weight of the hydraulic rock drill, and has the advantages of flexible operation, good sealing effect, safety, reliability, convenient use and maintenance, and popularization value.

Description

Energy storage device

Technical Field

The utility model relates to a supporting accumulator that uses on hydraulic rock drill.

Background

The energy accumulator used in conjunction with hydraulic rock drill to keep balance between nitrogen and hydraulic oil has different shapes and structures, which have excellent characteristics, but the disadvantages are that the volume is large, the weight is too heavy, the connecting structure is connected by bolts, the sealing performance is deficient, the safety is brought, the use effect and the service life are affected, and there is not much space for improvement.

Disclosure of Invention

An object of the utility model is to provide an accumulator that security performance is good, the reliability is higher and alleviate hydraulic rock drill complete machine weight.

In order to achieve the above object, the utility model adopts the following technical scheme: the energy accumulator comprises a protective cap, an inflation connector, an outer shell, an inner shell, an elastic diaphragm and a plugging plate, wherein a nitrogen outlet is processed in the center of the upper wall of the outer shell, hydraulic oil inlets and outlets of which the number is more than or equal to 1 are processed in the center of the bottom wall of the inner shell, and toggle holes of which the number is more than or equal to 3 are processed on the edge of the bottom wall of the inner shell.

The inflation connector is in threaded connection with the center hole of the protruding head at the top end of the shell, the center through hole of the inflation connector faces the nitrogen outlet, and the inflation connector and the nitrogen outlet are communicated. The protective cap is in threaded connection with the outer wall of the protruding head at the top end of the shell, and the protective cap is in contact with the notch at the upper end of the shell through the upper sealing ring, so that sealing between the protective cap and the shell is guaranteed. An elastic diaphragm is embedded in an inner groove at the middle end of the inner cavity of the shell, a plugging plate is arranged at the central part of the lower side surface of the elastic diaphragm, and a long opening is formed in the plugging plate.

The inner shell is in threaded connection with the inner wall of the lower end of the outer shell, the bottom surfaces of the outer shell and the inner shell are flush, and a height difference h is formed in the center of the inner shell in a protruding mode. The outer edge of the elastic diaphragm is positioned at the contact part of the outer shell and the inner shell, and a lower sealing ring is arranged in a circular notch on a central bulge of the inner shell.

A nitrogen cavity A is arranged between the upper inner cavity of the outer shell and the elastic diaphragm, and a hydraulic oil cavity B is arranged between the elastic diaphragm and the lower inner cavity of the inner shell.

Compared with the prior art, the energy accumulator provided by the technical scheme has the technical effects that ① reduces the whole weight of the hydraulic rock drill, so that the whole hydraulic rock drill is more convenient to use, ② parts are connected through threads and are provided with sealing rings, the sealing performance is good, the safety performance is high, the reliability is high, the service life is long, the replacement is convenient, and ③ has a nitrogen cavity A and a hydraulic oil cavity B, so that the oil pressure of the hydraulic rock drill can be adjusted and kept in a stable working state.

Drawings

Fig. 1 is a schematic view of a front structural section of an energy storage device according to the present invention.

Detailed Description

The following describes in further detail embodiments of the present invention with reference to the accompanying drawings.

As shown in fig. 1, the energy storage device of the present invention comprises a protection cap 1, an inflation connector 2, an outer shell 4, an inner shell 5, an elastic diaphragm 6 and a blocking plate 7, wherein the inflation connector 2 is equivalent to a one-way valve, and external nitrogen is supplied in a bottle type. The center of the upper wall of the outer shell 4 is provided with a nitrogen outlet 11, the center of the bottom wall of the inner shell 5 is provided with hydraulic oil inlets and outlets 10 with the number more than or equal to 1, the bottom wall of the inner shell 5 is provided with toggle holes 8 with the number more than or equal to 3 near the edge, and the toggle holes 8 can be uniformly or non-uniformly arranged.

The inflation connector 2 is in threaded connection with the center hole of the protruding head at the top end of the shell 4, and the center through hole of the inflation connector 2 just faces the nitrogen outlet 11, so that no resistance exists when nitrogen enters. The protective cap 1 is in threaded connection with the outer wall of the protruding head at the top end of the shell 4, and an upper sealing ring 3 is arranged between the protective cap 1 and the notch at the upper end of the shell 4, so that the protective cap 1 is in contact with the notch at the upper end of the shell 4 through the upper sealing ring 3, and the sealing between the protective cap 1 and the shell 4 is ensured. An elastic diaphragm 6 is embedded in an inner groove at the middle end of the inner cavity of the shell 4, a plugging plate 7 is arranged at the central part of the lower side surface of the elastic diaphragm 6, a long opening is formed in the plugging plate 7, and due to the plugging plate 7, the elastic diaphragm 6 cannot be sucked into the hydraulic oil inlet/outlet 10, so that the elastic diaphragm 6 cannot be torn. The elastic diaphragm 6 can be made of an elastic rubber sheet or a (soft) plastic sheet.

Inner shell 5 threaded connection has realized the interconnect of inner shell 5 with outer shell 4 at the inner wall of outer shell 4 lower extreme, and the bottom surface of outer shell 4 and inner shell 5 flushes, and the central authorities of inner shell 5 are protruding to have difference in height h. The outer edge of the elastic diaphragm 6 is positioned at the contact part of the outer shell 4 and the inner shell 5, and when the inner shell 5 is in threaded connection with the outer shell 4, a special tool (such as a three-jaw wrench) is used for realizing screwing or loosening through the toggle hole 8. In order to achieve tightness of the entire accumulator when connected to the hydraulic system, a lower sealing ring 9 is fitted in a circular groove in the central projection of the inner housing 5. When the entire accumulator is assembled, a nitrogen chamber a is formed between the upper inner chamber of the outer shell 4 and the elastic diaphragm 6, and a hydraulic oil chamber B is formed between the elastic diaphragm 6 and the lower inner chamber of the inner shell 5, the nitrogen chamber a and the hydraulic oil chamber B being isolated from each other by the elastic diaphragm 6.

The accumulator of the above-described construction/shape is mounted on a hydraulic rock drill and the central bulge with the hydraulic oil inlet and outlet 10 and the height difference h is connected to the hydraulic system. If the pressure of the hydraulic oil of the hydraulic system is too high, the hydraulic oil enters the hydraulic oil cavity B through the hydraulic oil inlet and outlet 10 at the moment, so that the elastic diaphragm 6 moves upwards, the space volume of the nitrogen gas cavity A is changed (if the space volume is reduced), the volume of the hydraulic oil cavity B is increased, and energy is stored. On the contrary, if the hydraulic oil pressure of the hydraulic system is too low, the nitrogen from the inflation connector 2 enters the nitrogen chamber a through the nitrogen outlet 11, the volume and the pressure of the nitrogen chamber a are increased, the elastic diaphragm 6 moves downwards to press the hydraulic oil chamber B, the hydraulic oil in the hydraulic oil chamber B is pressed to the hydraulic system through the hydraulic oil inlet and outlet 10, and the hydraulic oil pressure of the hydraulic system is kept stable. So circulate, can guarantee always that the hydraulic oil in the hydraulic rock drill keeps in a stable scope with the demand, realized the utility model discloses a purpose.

Claims

1. The energy storage ware, including protective cap (1), gas connection (2), shell (4), inner shell (5), elastic diaphragm (6) and shutoff board (7), characterized by: a nitrogen outlet (11) is processed at the central part of the upper wall of the outer shell (4), hydraulic oil inlets and outlets (10) with the number more than or equal to 1 are processed at the central position of the bottom wall of the inner shell (5), and toggle holes (8) with the number more than or equal to 3 are processed at the bottom wall of the inner shell (5) close to the edge;

the inflation connector (2) is in threaded connection with a central hole of a protruding head at the top end of the shell (4), and a central through hole of the inflation connector (2) faces the nitrogen outlet (11); the protective cap (1) is in threaded connection with the outer wall of the protruding head at the top end of the shell (4), and the protective cap (1) is in contact with the notch at the upper end of the shell (4) through the upper sealing ring (3), so that sealing between the protective cap (1) and the shell (4) is guaranteed; an elastic diaphragm (6) is embedded in an inner groove at the middle end of the inner cavity of the shell (4), a plugging plate (7) is arranged at the central part of the lower side surface of the elastic diaphragm (6), and a long opening is formed in the plugging plate (7);

the inner shell (5) is in threaded connection with the inner wall at the lower end of the outer shell (4), the bottom surfaces of the inner shell and the outer shell are flush, and the center of the inner shell (5) protrudes with a height difference h; the outer edge of the elastic diaphragm (6) is positioned at the contact part of the outer shell (4) and the inner shell (5), and a lower sealing ring (9) is arranged in a circular notch on the central bulge of the inner shell (5).

2. An accumulator according to claim 1, characterized in that: a nitrogen cavity A is arranged between the upper inner cavity of the outer shell (4) and the elastic diaphragm (6), and a hydraulic oil cavity B is arranged between the elastic diaphragm (6) and the lower inner cavity of the inner shell (5).