Air bag limiting structure for high-frequency breaking hammer

Abstract

The utility model discloses a kind of air bag limiting structure for high-frequency breaking hammer, belong to breaking hammer technical field, including shell, vibration box is arranged in it, upper pull support and air bag support riser are arranged in vibration box top, lower pull support is arranged in vibration box bottom, lower air bag is connected on air bag support riser, air spring is connected on lower air bag through flange, air spring top is connected on upper air bag through flange, upper air bag is connected on shell, and upper pull support and lower pull support are connected on shell side wall through damping block. The utility model solves the problem that due to air spring needs to continuously bear high-frequency, high-strength dynamic load, fatigue crack is extremely easy to produce in repeated compression-rebound process of its internal sealing element and elastic element, shortens the service life of air spring.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic breaker technology, and in particular relates to an airbag limiting structure for a high-frequency hydraulic breaker. Background Technology

[0002] A hydraulic breaker, also known as a hydraulic breaker or breaker, is an auxiliary tool widely used in the field of engineering construction. It is often installed on main equipment such as excavators and is used to break hard materials such as rocks and concrete.

[0003] When existing hydraulic breakers perform ground impact operations, their buffer structure mainly relies on the air spring at the top to absorb and disperse impact energy, in order to protect the precision components inside the hammer body and the main equipment from damage caused by excessive vibration and reaction force. Since the air spring needs to continuously withstand high-frequency, high-intensity dynamic loads, its internal seals and elastic elements are prone to fatigue cracks during repeated compression and rebound, which shortens the service life of the air spring. Utility Model Content

[0004] The purpose of this utility model is to provide a high-frequency hydraulic breaker airbag limiting structure to address the problem that air springs are prone to fatigue cracks in their internal seals and elastic elements during repeated compression and rebound due to the need to continuously withstand high-frequency and high-intensity dynamic loads, thus shortening the service life of the air springs.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a high-frequency hydraulic breaker airbag limiting structure, including an outer shell, a vibration box inside, an upper pull-up bracket and an airbag support plate on the top of the vibration box, a lower pull-up bracket on the bottom of the vibration box, a lower airbag connected to the airbag support plate, an air spring connected to the lower airbag via a flange, the top of the air spring connected to the upper airbag via a flange, the upper airbag connected to the outer shell, and the upper pull-up bracket and the lower pull-up bracket connected to the side wall of the outer shell via vibration damping blocks.

[0006] Furthermore, the top of the aforementioned vibration box is provided with a welded sleeve connecting plate, one end of the pull-up bracket is connected to the inner wall of the outer shell through the first welded sleeve, and the other end is connected to the welded sleeve connecting plate through the second welded sleeve.

[0007] Furthermore, the bottom of the aforementioned vibration chamber is provided with a lower blade row, one end of the pull-down bracket is connected to the inner wall of the outer shell through a third welding sleeve, and the other end is connected to the lower blade row through a fourth welding sleeve.

[0008] Furthermore, the aforementioned upper airbag is connected to the inner wall of the top of the outer shell via an airbag pad.

[0009] Furthermore, a limiting plate is provided at the rear end of the aforementioned vibration box, a reinforcing plate is provided on the inner wall of the outer shell, and vibration damping rubber is provided at the bottom of the reinforcing plate, with the vibration damping rubber located above the limiting plate.

[0010] This utility model provides an airbag limiting structure for a high-frequency hydraulic breaker. By setting airbags at both the top and bottom of the air spring, a bipolar buffer structure is formed. The elastic deformation of the airbags absorbs most of the high-frequency vibration energy, reducing the direct impact on the air spring body and improving the service life of the air spring. At the same time, the bipolar buffer decomposes a single impact load into two energy release processes, extending the deformation cycle of a single airbag and reducing the material fatigue rate. In addition, the upper and lower pull-up brackets on the vibration box are connected to the side wall of the outer shell through vibration damping blocks. A limiting plate is set on the rear side of the vibration box, and a reinforcing plate is set on the inner wall of the outer shell. Vibration damping rubber is set at the bottom of the reinforcing plate and is located above the limiting plate. This ensures that the top, sides, and rear of the vibration box are buffered during vibration, forming a three-layer protection structure and improving the service life of the vibration box.

[0011] Therefore, this embodiment has the following advantages compared to the prior art:

[0012] A high-frequency hydraulic breaker airbag limiting structure solves the problem that the air spring is prone to fatigue cracks in its internal seals and elastic elements during repeated compression and rebound, which shortens the service life of the air spring because the air spring needs to continuously bear high-frequency and high-intensity dynamic loads. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 A three-dimensional airbag limiting structure for a high-frequency hydraulic breaker Figure 1 .

[0015] Figure 2 A three-dimensional airbag limiting structure for a high-frequency hydraulic breaker Figure 2 .

[0016] Figure 3 This is a cross-sectional view of an airbag limiting structure for a high-frequency hydraulic breaker.

[0017] Legend:

[0018] 1-Outer shell; 2-Vibration chamber; 3-Upper pull-up bracket; 4-Airbag bracket upright plate; 5-Lower pull-up bracket; 6-Lower airbag; 7-Air spring; 8-Flange; 9-Upper airbag; 10-Vibration damping block; 11-Welded sleeve connecting plate; 12-First welded sleeve; 13-Second welded sleeve; 14-Third welded sleeve; 15-Fourth welded sleeve; 16-Airbag pad plate; 17-Limiting upright plate; 18-Reinforcing plate; 19-Vibration damping rubber; 20-Lower blade plate. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] In the description of the embodiments of this utility model, it should be noted that the terms "upper" and "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Please see Figure 1-3 This utility model provides a technical solution: a high-frequency hydraulic breaker airbag limiting structure, including a shell 1, a vibration box 2 inside, an upper pull bracket 3 and an airbag support plate 4 on the top of the vibration box 2, a lower pull bracket 5 on the bottom of the vibration box 2, a lower airbag 6 connected to the airbag support plate 4, an air spring 7 connected to the lower airbag 6 through a flange 8, the top of the air spring 7 connected to the upper airbag 9 through a flange 8, the upper airbag 9 connected to the shell 1, and the upper pull bracket 3 and the lower pull bracket 5 connected to the side wall of the shell 1 through a vibration damping block 10.

[0026] Specifically, see Figure 1-3 The top of the vibration box 2 is provided with a welded sleeve connecting plate 11. One end of the pull-up bracket 3 is connected to the inner wall of the outer shell 1 through the first welded sleeve 12, and the other end is connected to the welded sleeve connecting plate 11 through the second welded sleeve 13.

[0027] Specifically, see Figure 1-3 The bottom of the vibration box 2 is provided with a lower blade row 20. One end of the pull-down bracket 5 is connected to the inner wall of the outer shell 1 through a third welding sleeve, and the other end is connected to the lower blade row 20 through a fourth welding sleeve 15.

[0028] This utility model provides an airbag limiting structure for a high-frequency hydraulic breaker. By setting airbags at both the top and bottom of the air spring, a bipolar buffer structure is formed. The elastic deformation of the airbags absorbs most of the high-frequency vibration energy, reducing the direct impact on the air spring body and improving the service life of the air spring. At the same time, the bipolar buffer decomposes a single impact load into two energy release processes, extending the deformation cycle of a single airbag and reducing the material fatigue rate. In addition, the upper and lower pull-up brackets on the vibration box are connected to the side wall of the outer shell through vibration damping blocks. A limiting plate is set on the rear side of the vibration box, and a reinforcing plate is set on the inner wall of the outer shell. Vibration damping rubber is set at the bottom of the reinforcing plate and is located above the limiting plate. This ensures that the top, sides, and rear of the vibration box are buffered during vibration, forming a three-layer protection structure and improving the service life of the vibration box.

[0029] Therefore, this embodiment has the following advantages compared to the prior art:

[0030] A high-frequency hydraulic breaker airbag limiting structure solves the problem that the air spring is prone to fatigue cracks in its internal seals and elastic elements during repeated compression and rebound, which shortens the service life of the air spring because the air spring needs to continuously bear high-frequency and high-intensity dynamic loads.

[0031] Example 2:

[0032] See Figure 1-3 The figure shows a high-frequency hydraulic breaker airbag limiting structure provided in Embodiment 2 of this utility model. Based on the above embodiments, the following technical solutions are further improved: the upper airbag 9 is connected to the top inner wall of the outer shell 1 through the airbag pad 16.

[0033] Example 3:

[0034] See Figure 1-3 The figure shows a high-frequency hydraulic breaker airbag limiting structure provided in Embodiment 3 of this utility model. Based on the above embodiments, this embodiment further makes the following improved technical solutions: a limiting plate 17 is provided at the rear end of the vibration box 2, a reinforcing plate 18 is provided on the inner wall of the outer shell 1, and a vibration damping rubber 19 is provided at the bottom of the reinforcing plate 18, and the vibration damping rubber 19 is located above the limiting plate 17.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pneumatic retaining structure for a high-frequency hydraulic breaker, characterized in that, The device includes an outer shell (1) and a vibration box (2) inside. The top of the vibration box (2) is provided with an upper pull-up bracket (3) and an airbag support plate (4). The bottom of the vibration box (2) is provided with a lower pull-up bracket (5). The lower airbag (6) is connected to the airbag support plate (4). An air spring (7) is connected to the lower airbag (6) through a flange (8). The top of the air spring (7) is connected to the upper airbag (9) through a flange (8). The upper airbag (9) is connected to the outer shell (1). The upper pull-up bracket (3) and the lower pull-up bracket (5) are connected to the side wall of the outer shell (1) through a damping block (10).

2. The airbag limiting structure for a high-frequency hydraulic breaker according to claim 1, characterized in that, The top of the vibration box (2) is provided with a welding sleeve connecting plate (11). One end of the pull-up bracket (3) is connected to the inner wall of the outer shell (1) through the first welding sleeve (12), and the other end is connected to the welding sleeve connecting plate (11) through the second welding sleeve (13).

3. The airbag limiting structure for a high-frequency hydraulic breaker according to claim 1, characterized in that, The bottom of the vibration box (2) is provided with a lower blade row (20). One end of the pull-down bracket (5) is connected to the inner wall of the outer shell (1) through a third welding sleeve, and the other end is connected to the lower blade row (20) through a fourth welding sleeve (15).

4. The airbag limiting structure for a high-frequency hydraulic breaker according to claim 1, characterized in that, The upper airbag (9) is connected to the top inner wall of the outer shell (1) via an airbag pad (16).

5. The airbag limiting structure for a high-frequency hydraulic breaker according to claim 1, characterized in that, The vibration box (2) is provided with a limiting plate (17) at the rear end, and the inner wall of the outer shell (1) is provided with a reinforcing plate (18). The bottom of the reinforcing plate (18) is provided with a vibration damping rubber (19), which is located above the limiting plate (17).

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