CN209909056U

CN209909056U - Medium-high pressure oil buffer

Info

Publication number: CN209909056U
Application number: CN201920430427.3U
Authority: CN
Inventors: 陈昌炳
Original assignee: Xiamen Kaizhong Electric Co Ltd
Current assignee: Xiamen Kaizhong Electric Co Ltd
Priority date: 2019-04-01
Filing date: 2019-04-01
Publication date: 2020-01-07
Anticipated expiration: 2029-04-01

Abstract

The utility model discloses a medium and high pressure oil buffer in the technical field of buffers, which comprises an oil cup, wherein the main body of the oil cup is a cylindrical barrel with an opening at the top end, the inner cavity of the oil cup is provided with a guide rod, the upper end of the guide rod is fixedly sleeved with a guide rod head through a bolt, the outer side of the guide rod is sleeved with a spring, the middle part of one end of the guide rod, which is positioned in the inner cavity of the oil cup, is sleeved with an oil storage sleeve, the outer wall of the oil storage sleeve is sleeved with an oil storage sponge, the top of the oil storage sleeve is abutted with an oil seal, the inner ring and the outer ring of the oil seal are respectively in sealing contact with the outer wall of the guide rod and the inner cavity of the oil cup, the top of the oil seal is provided with a seal cover, the top of the seal cover keeps axial spacing with the inner cavity of the oil cup through a large-size snap, the utility model provides a medium-high pressure oil buffer convenient to dismouting is adjusted.

Description

Medium-high pressure oil buffer

Technical Field

The utility model relates to a buffer technical field specifically is a medium and high pressure oil buffer.

Background

The hydraulic buffer is used to reduce vibration and noise in the operation of the automatic machine, convert the kinetic energy generated by the moving object into heat energy and release the heat energy into the atmosphere, and effectively stop the object in balance during the operation. Can reduce vibration and noise in the operation of the automatic machine, convert the kinetic energy generated by the moving object into heat energy and release the heat energy into the atmosphere, and effectively stop the object in balance during the operation; the efficiency of the machine is improved, the productivity is increased, the service life of the machine is prolonged, the maintenance cost is reduced, the quality of products is stably maintained through mechanical actions, the operation of the machine is safer, accidents are avoided, the personnel efficiency is improved, and the competitive advantage of enterprises is increased.

The breaker buffer is used for absorbing residual kinetic energy when closing or opening is close to the end, so that the movable part is quickly changed into a static state from a high-speed motion state. Common buffers include oil buffers, spring buffers, rubber pad buffers, and coaxial oil or gas buffers, wherein the principle of the oil buffer is that it converts kinetic energy into heat energy to absorb the heat energy, thereby achieving the buffering effect.

The design of the existing oil buffer is usually that the oil buffer is directly fixed on a shell through a base according to a breaker structure, the contact pressures of different breakers are different, particularly, the requirements on characteristic parameters such as opening speed, rebound and overshoot of a medium-high voltage breaker are higher, the oil buffer needs to be disassembled to adjust height, stroke and the like, and the requirements on the oil buffer are more rigorous for the breaker structure using the oil buffer as a supporting point, the operation is troublesome, the production efficiency is low, and the debugging time is long.

Based on this, the utility model designs a well high pressure oil buffer to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a well high pressure oil buffer to when solving above-mentioned current circuit breaker and not conforming to the requirement because of characteristic parameter such as separating brake speed, bounce-back, overshoot, oil buffer need dismantle back adjustment height, stroke etc. causes the problem of debugging time overlength, inefficiency.

In order to achieve the above object, the utility model provides a following technical scheme: a middle and high pressure oil buffer comprises an oil cup, wherein the oil cup is a cylindrical barrel with an open top end, a guide rod is arranged in an inner cavity of the oil cup, the upper end of the guide rod upwards extends out of an inner cavity of the oil cup and is fixedly sleeved with a guide rod head through a bolt, a spring is sleeved outside the guide rod, the upper end and the lower end of the spring are respectively abutted between a step groove at the bottom of the guide rod head and a step groove at the upper end of the outer wall of the oil cup, the guide rod is positioned between the step groove at the middle part of one end of the inner cavity of the oil cup and is sleeved with an oil storage sleeve, the bottom edge of the oil storage sleeve is abutted against the step surface at the middle part of the inner wall of the oil cup to keep axial spacing, an oil storage sponge is sleeved outside the oil storage sleeve, an oil seal is abutted against the top of the oil storage sleeve, the inner, the top of the sealing cover keeps axial spacing with the inner cavity of the oil cup through a large-size clamp spring, the lower end of the guide rod is provided with a step shaft structure, the step surface of the step shaft structure is flush with the bottom of the oil storage sleeve, the outer wall of the step shaft structure is sequentially sleeved with a limiting sleeve and a piston up and down, and the bottom of the piston is provided with a small-size clamp spring.

Preferably, the oil storage sleeve is of an I-shaped sleeve structure, the oil storage sponge is located between two end faces of the I-shaped sleeve structure, and oil passing holes are uniformly formed in the lower end face of the I-shaped sleeve structure along the circumference.

Preferably, oil return holes are formed in the piston in a circumferential array mode, and the diameter of an array track circle of each oil return hole is smaller than that of the limiting sleeve.

Preferably, the distance between the limiting sleeve and the small-size clamp spring is larger than the thickness of the piston.

Preferably, the closed inner cavity of the oil cup is filled with buffer oil.

Preferably, the outer wall of the oil cup is of an external thread structure, and the outer wall of the oil cup is connected with two sets of mounting nuts through the external thread structure in a threaded mode.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a reach the distance requirement of guide bar and circuit breaker mechanism through adjusting the spiro union cooperation relation of the oil cup of oil buffer and two nuts, simple structure, convenient operation has reduced the debugging time of circuit breaker, has improved production efficiency;

the utility model discloses all usable to different vacuum interrupter, characteristic parameters such as the separating brake speed, combined floodgate spring, the bounce-back value that can be convenient for adjust the circuit breaker reach the qualification range in, have good general compatibility.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

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

FIG. 2 is a schematic view of the internal structure of the present invention;

fig. 3 is a schematic view of the installation state of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1-an oil cup, 2-a sealing cover, 3-a guide rod, 4-a spring, 5-a piston, 51-an oil return hole, 6-an oil storage sponge, 7-an oil storage sleeve, 71-an oil passing hole, 8-an oil seal, 9-a limiting sleeve, 10-buffer oil, 11-a mounting nut, 12-a guide rod head, 13-a bolt, 14-a large-size snap spring, 15-a small-size snap spring and 16-a mounting plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a middle and high pressure oil buffer comprises an oil cup 1, the oil cup 1 is a cylindrical barrel with an opening at the top end, a guide rod 3 is arranged in an inner cavity of the oil cup 1, the upper end of the guide rod 3 extends upwards to form the inner cavity of the oil cup 1, a guide rod head 12 is fixedly sleeved through a bolt 13, a spring 4 is sleeved outside the guide rod 3, the upper end and the lower end of the spring 4 are respectively abutted between a bottom step groove of the guide rod head 12 and a step groove at the upper end of the outer wall of the oil cup 1, an oil storage sleeve 7 is sleeved in the middle of one end of the inner cavity of the oil cup 3, the bottom edge of the oil storage sleeve 7 is abutted against a step surface in the middle of the inner side wall of the oil cup 1 to keep axial spacing, an oil storage sponge 6 is sleeved on the outer wall of the oil storage sleeve 7, an oil seal 8 is arranged on the top of the oil storage sleeve 7 in abutting contact with the top of the oil, the top of the sealing cover 2 keeps axial limit with the inner cavity of the oil cup 1 through a large-size clamp spring 14, the lower end of the guide rod 3 is provided with a step shaft structure, the step surface of the step shaft structure is flush with the bottom of the oil storage sleeve 7, the outer wall of the step shaft structure is sequentially sleeved with a limit sleeve 9 and a piston 5 from top to bottom, and the bottom of the piston 5 is provided with a small-size clamp spring 15;

the oil storage sleeve 7 is of an I-shaped sleeve structure, the oil storage sponge 6 is located between two end faces of the I-shaped sleeve structure, oil passing holes 71 are uniformly formed in the lower end face of the I-shaped sleeve structure along the circumference, and buffer oil 10 can conveniently enter the oil storage sponge 6 when the device is pressed downwards; oil return holes 51 are formed in the piston 5 in a circumferential array shape to play a role in oil return, the array track circle diameter of each oil return hole 51 is smaller than the diameter of the limiting sleeve 9, and the distance between the limiting sleeve 9 and the small-size clamp spring 15 is larger than the thickness of the piston 5, so that when the device is pressed downwards, the oil return holes 51 are closed through the limiting sleeve 9; the closed inner cavity of the oil cup 1 is filled with buffer oil 10; the outer wall of the oil cup 1 is of an external thread structure, and the outer wall of the oil cup 1 is connected with two sets of mounting nuts 11 through the external thread structure in a threaded mode, so that the device can be conveniently disassembled, assembled and adjusted.

One specific application of this embodiment is: the utility model relates to a medium-high pressure oil buffer, exert pressure to guide rod head 12, make its compression spring to promote stop collar 9 and piston 5 to move to the oil storage space, in this process piston 5 and stop collar 9 laminate, oil return hole 51 is sealed by stop collar 9, buffer oil 10 flows into the oil storage space through the clearance between piston 5 and oil cup 1, and get into in the oil storage sponge 6 through the oil hole 71 on the oil storage sleeve 7, played the cushioning effect; after the pressure applied on the guide rod 3 disappears, the spring 4 restores to the original state and pushes the guide rod 3, the limiting sleeve 9 and the piston 5 to move towards the oil storage space, the piston 5 is separated from the limiting sleeve 9 due to self gravity, the oil return hole 51 is separated and communicated with the limiting sleeve 9, and the buffer oil 10 in the oil storage space flows towards the oil storage space through the gap between the piston 5 and the oil cup 1, the gap between the guide rod 3 and the oil cup 1 and the oil return hole 51 in the moving process, so that automatic reset is realized; the outer wall of the oil cup 1 is provided with external threads, the oil cup 1 is fixed on the mounting plate 16 through the mounting nut 11, the oil buffer does not need to be taken down from the breaker mounting plate when the breaker oil buffer is debugged, and the distance between the guide rod 3 of the oil buffer and the breaker mechanism can be adjusted by screwing the mounting nut 11; in addition, the device only needs the mounting plate 16 with a through hole structure in the mounting process through a mounting mode that two groups of mounting nuts 11 of the external threads of the oil cup 1 are matched and clamped, so that the device can be used for different vacuum arc-extinguishing chambers, characteristic parameters such as opening speed, closing bounce, rebound value and the like of the circuit breaker can be conveniently adjusted to be within a qualified range, and the device has good universal compatibility.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A middle and high pressure oil buffer is characterized in that: comprises an oil cup (1), the oil cup (1) is a cylindrical barrel with an opening at the top end, a guide rod (3) is arranged in an inner cavity of the oil cup (1), the upper end of the guide rod (3) upwards extends out of an inner cavity of the oil cup (1) and is fixedly sleeved with a guide rod head (12) through a bolt (13), a spring (4) is sleeved outside the guide rod (3), the upper end and the lower end of the spring (4) are respectively abutted between a bottom step groove of the guide rod head (12) and an outer wall upper end step groove of the oil cup (1), an oil storage sleeve (7) is sleeved in the middle of one end of the guide rod (3) located in the inner cavity of the oil cup (1), the bottom edge of the oil storage sleeve (7) is abutted against the inner side wall middle step surface of the oil cup (1) to keep axial spacing, an outer wall oil storage sponge (6) of the oil storage sleeve (7) is sleeved, and an oil seal (8) is arranged on the top abutting, the outer lane of oil blanket (8) respectively with the outer wall of guide bar (3) and the inner chamber sealing contact of oil cup (1), the top of oil blanket (8) is provided with sealed lid (2), the top of sealed lid (2) keeps the axial spacing through the inner chamber of large-size jump ring (14) with oil cup (1), the lower extreme of guide bar (3) has the step axle construction, the step face and the oil storage cover (7) bottom parallel and level of step axle construction, the outer wall of step axle construction overlaps from top to bottom in proper order and is equipped with stop collar (9) and piston (5), the bottom of piston (5) is provided with small-size jump ring (15).

2. The medium-high pressure oil buffer according to claim 1, characterized in that: the oil storage sleeve (7) is of an I-shaped sleeve structure, the oil storage sponge (6) is located between two end faces of the I-shaped sleeve structure, and oil passing holes (71) are uniformly formed in the lower end face of the I-shaped sleeve structure along the circumference.

3. The medium-high pressure oil buffer according to claim 1, characterized in that: oil return holes (51) are formed in the piston (5) in a circumferential array shape, and the diameter of an array track circle of the oil return holes (51) is smaller than that of the limiting sleeve (9).

4. The medium-high pressure oil buffer according to claim 1, characterized in that: the spacing between the limiting sleeve (9) and the small-size clamp spring (15) is larger than the thickness of the piston (5).

5. The medium-high pressure oil buffer according to claim 1, characterized in that: and the closed inner cavity of the oil cup (1) is filled with buffer oil (10).

6. The medium-high pressure oil buffer according to claim 1, characterized in that: the outer wall of the oil cup (1) is of an external thread structure, and the outer wall of the oil cup (1) is connected with two sets of mounting nuts (11) through the external thread structure in a threaded mode.