High-frequency breaking hammer with enhanced horizontal and oblique striking force

Abstract

This invention relates to the field of high-frequency hydraulic breakers, specifically to a high-frequency hydraulic breaker that enhances horizontal and inclined impact force. The breaker includes a damping box, an excitation box, and a linkage mechanism. The excitation box is hinged within the damping box via the linkage mechanism. When the high-frequency hydraulic breaker performs horizontal or inclined upward / downward impacts, the excitation box is suspended within the damping box via the linkage mechanism. In this invention, the excitation box is hinged within the damping box via the linkage mechanism. When the high-frequency hydraulic breaker performs horizontal or inclined upward / downward impacts, the excitation box is suspended within the damping box via the linkage mechanism. Thus, the excitation box is suspended below the damping box. During excitation, the excitation box converts its own weight into inertial force using a principle similar to "ringing a bell," thereby enhancing the horizontal / inclined impact force and improving the horizontal / inclined impact capability of the high-frequency hydraulic breaker, making it suitable for tasks such as breaking and excavating at tunnel faces.

Description

Technical Field

[0001] This invention relates to the field of high-frequency hydraulic breakers, and specifically to a high-frequency hydraulic breaker that can enhance horizontal and inclined impact force. Background Technology

[0002] High-frequency hydraulic breakers are commonly used rock-breaking equipment in rock breaking construction. When using high-frequency hydraulic breakers to break up ground surfaces, the breaker strikes vertically downwards, and the weight of the vibratory box can be used to meet the required impact force. However, in tunnel face construction, high-frequency hydraulic breakers are mostly in a horizontal or inclined upward / downward striking posture. In this case, if... Figure 1 As shown, the existing high-frequency hydraulic breakers are designed so that their damping boxes are typically rotatably supported within the excitation box, and the impact direction is perpendicular to the direction of gravity. Therefore, the impact force cannot be enhanced by the gravity of the excitation box during impact, resulting in weak impact force during horizontal / inclined impacts. It is evident that currently available high-frequency hydraulic breakers are primarily suitable for ground breaking operations and are not well-suited for breaking and excavating tunnel faces. Summary of the Invention

[0003] In view of this, the present invention provides a high-frequency hydraulic breaker that can enhance horizontal and inclined impact force, aiming to enhance the impact force of the high-frequency hydraulic breaker when performing horizontal and inclined upward / downward impacts in working environments such as tunnel faces.

[0004] To solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0005] A high-frequency hydraulic breaker that enhances horizontal and inclined impact force includes a shock absorber box, an excitation box, and a linkage mechanism; the excitation box is hinged to the shock absorber box through the linkage mechanism, and when the high-frequency hydraulic breaker performs horizontal impact or inclined upward / downward impact, the excitation box is suspended in the shock absorber box through the linkage mechanism.

[0006] In some embodiments, the linkage mechanism includes a first linkage mechanism and a second linkage mechanism; when the high-frequency hydraulic breaker performs horizontal or inclined upward / downward strikes, the first linkage mechanism and the second linkage mechanism are respectively hinged between the front and rear sides of the excitation box and the damping box, and the upper ends of the first linkage mechanism and the second linkage mechanism are hinged to the damping box, and the lower ends of the first linkage mechanism and the second linkage mechanism are hinged to the excitation box.

[0007] In some embodiments, a vibration protection mechanism is also included; the vibration protection mechanism is disposed between the excitation box and the damping box, and the vibration protection mechanism is located on the excitation path of the excitation box, so as to limit the forward vibration amplitude of the excitation box when the high-frequency breaker is working.

[0008] In some embodiments, the vibration protection mechanism is disposed between the top of the vibration chamber and the top inner wall of the damping chamber, or between the bottom of the vibration chamber and the bottom inner wall of the damping chamber.

[0009] In some embodiments, the vibration protection mechanism includes a baffle, an elastic element, and an impact plate; the baffle is mounted on the vibration box; the impact plate is mounted on the damping box via the elastic element, and the impact plate is located in front of the vibration path of the baffle.

[0010] In some embodiments, the vibration protection mechanism further includes a limiting mechanism; the limiting mechanism is connected to the shock absorber and is used to limit the forward movement of the impact plate and the baffle beyond a preset distance.

[0011] In some embodiments, the limiting mechanism includes a limiting plate; the limiting plate is mounted on the excitation box and spaced apart in front of the impact plate.

[0012] In some embodiments, the limiting mechanism includes a base; the elastic element is mounted on the shock absorber via the base; the rear end of the impact plate has a vertical plate extending toward the inner wall of the shock absorber; and the base is located in front of the movement path of the vertical plate.

[0013] In some embodiments, a damping mechanism is also included; the rear of the excitation box and the rear of the damping box can be connected through the damping mechanism.

[0014] In some embodiments, a cutting tool is also included; the cutting tool is attached to the front end of the excitation box and extends to the outside of the damping box.

[0015] In summary, compared with the prior art, the present invention has the following advantages and beneficial effects: In the present invention, the excitation box is hinged to the damping box through a linkage mechanism, and when the high-frequency breaker performs horizontal or inclined upward / downward strikes, the excitation box is suspended in the damping box through the linkage mechanism. In this way, the excitation box is suspended below the damping box, and when the excitation box is vibrating, it will convert its own gravity into inertial force in a manner similar to "striking a bell" to enhance the horizontal / inclined strike force, thereby improving the horizontal / inclined strike capability of the high-frequency breaker and making it suitable for, for example, breaking and excavating work at the tunnel face. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an existing high-frequency hydraulic breaker when performing horizontal impact.

[0017] Figure 2 This is a schematic diagram of the structure of Embodiment 1 of the present invention.

[0018] Figure 3for Figure 2 A magnified structural diagram of region A in the middle.

[0019] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of the present invention.

[0020] Figure 5 for Figure 4 A magnified structural diagram of region B in the middle.

[0021] Figure 6 The diagram shows the principle of the excitation box corresponding to the existing technology.

[0022] Figure 7 This is the principle diagram of the excitation box corresponding to the present invention.

[0023] The labels in the diagram are as follows: Ear seat 1, shock absorber box 2, shock absorber mechanism 3, first linkage mechanism 4, excitation box 5, second linkage mechanism 6, cutter 7, excitation protection mechanism 8, elastic element 81, impact plate 82, baffle 83, limit plate 84, base 85, vertical plate 86. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to specific embodiments.

[0025] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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 limiting this invention.

[0026] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," "exceeding," etc. are understood to exclude the stated number, while "above," "below," "within," etc. are understood to include the stated number. If terms such as "first," "second," etc., are used only to distinguish technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0027] In the description of this invention, unless otherwise explicitly defined, terms such as "setting," "installing," and "connecting" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0028] Example 1

[0029] like Figure 2As shown in the figure, a high-frequency hydraulic breaker that enhances horizontal and inclined impact force according to an embodiment of this application includes a shock absorber box 2, an excitation box 5, and a linkage mechanism. For ease of description, the relevant structure and technical effects of the embodiment of this application are introduced with the high-frequency hydraulic breaker in a horizontal state as an example, and the relevant structure of the embodiment of this application is explained by introducing the Cartesian coordinate system shown in the figure, wherein the X-axis indicates the rear direction and the Y-axis indicates the upward direction.

[0030] like Figure 2 As shown, at least a portion of the excitation box 5 is located inside the damping box 2. Figure 2 In the middle, the rear of the excitation box 5 is located inside the damping box 2. The excitation box 5 can generate excitation force in the front-to-back direction.

[0031] The excitation box 5 can be hinged to the damping box 2 via a linkage mechanism, and when the high-frequency breaker performs horizontal or upward / downward strikes, the excitation box 5 is suspended inside the damping box 2 via the linkage mechanism.

[0032] The linkage mechanism includes a first linkage 4 and a second linkage 6. When the high-frequency hydraulic breaker performs horizontal or upward / downward strikes, the first linkage 4 is hinged between the front end of the excitation box 5 and the front of the damping box 2, and the second linkage 6 is hinged between the rear end of the excitation box 5 and the rear of the damping box 2. The linkage mechanism allows the excitation box 5 to move relative to the damping box 2, thus preventing the damping box 2 from vibrating during the excitation motion of the excitation box 5. In the prior art, the upper ends of the first linkage 4 and the second linkage 6 are hinged to the excitation box 5, and the lower ends are hinged to the damping box 2. As described in the background section, this configuration of the linkage mechanism is unsuitable for horizontal strikes. In this embodiment, the upper ends of the first linkage mechanism 4 and the second linkage mechanism 6 are hinged to the shock absorber box 2, and the lower ends of the first linkage mechanism 4 and the second linkage mechanism 6 are hinged to the excitation box 5. In this way, the excitation box 5 is suspended below the shock absorber box 2. When the excitation box 5 is vibrating, it will convert its own gravity into inertial force in a manner similar to "striking a bell" to enhance the horizontal / inclined impact force, thereby improving the horizontal / inclined impact capability of the high-frequency breaker and making it suitable for crushing and excavation work such as tunnel face.

[0033]

[0034] The table above illustrates the test data for existing high-frequency hydraulic breakers and the high-frequency hydraulic breaker described in this invention. It is clearly visible from the table that this invention significantly improves horizontal / tilt impact force compared to existing technologies.

[0035] In addition, such as Figure 6 and Figure 7As shown, the striking principle is explained using the action range of the first linkage mechanism 4 or the second linkage mechanism 6. Point C represents the position where the high-frequency hydraulic breaker just contacts the working face. Due to the structural design of the high-frequency hydraulic breaker, the linkage mechanism is usually slightly inclined, making the distance between AB greater than the distance between BC. At this time, as... Figure 6 As shown, in the existing linkage mechanism, during horizontal impact, the excitation box 5 moves from point A to point C. Since gravity acts vertically downwards, while the height increases from point A to point B, gravity becomes a drag force. Only during the movement from point B to point C does gravity become a propulsive force. Therefore, in the existing linkage mechanism, gravity acts as a drag force over a long distance during horizontal impact, and only as a propulsive force over a short distance. Figure 7 As shown, after the linkage mechanism adopts the configuration described in this embodiment, the height of the excitation box 5 from point A to point B decreases during its movement from point A to point C. Therefore, gravity becomes a propulsive force during this process, while from point B to point C, gravity becomes a resistance force. It is evident that, compared to the prior art, the gravity of the excitation box 5 in this embodiment provides a longer propulsive distance, thereby increasing the impact force during horizontal impact at point C and thus enhancing the excitation force.

[0036] In addition, the rear end of the shock absorber box 2 can be connected to the lug 1 by means of welding, for example, the lug 1 is used to connect the boom or the body.

[0037] Furthermore, the front end of the excitation box 5 is connected to a cutter 7 that can extend to the outside of the damping box 2. The cutter 7 is mainly used for crushing operations and can be a crushing component such as a bucket tooth, a chisel, or a cutter bar.

[0038] The rear of the excitation box 5 and the rear of the damping box 2 can be connected by a damping mechanism 3. The damping mechanism 3 may include a bladder-type air spring. One side of the bladder-type air spring is connected to the inner wall of the rear end of the damping box 2, and the other side is connected to the rear end of the excitation box 5. The bladder-type air spring consists of a rubber air bladder with cords and compressed air (mainly nitrogen) sealed inside. The inner layer of the air bladder is made of airtight rubber, while the outer layer is made of oil-resistant rubber. The air bladder is generally made of two sections, but there are also single-section or three- or four-section ones. The more sections, the better the elasticity, but the poorer the sealing. A steel waist ring is surrounded between the sections to prevent radial expansion of the middle part and to prevent friction between the two sections. The upper and lower cover plates of the air bladder seal the air bladder. In this embodiment, the damping mechanism 3 is used to buffer the rear end of the excitation box 5 and the damping box 2, thereby minimizing the transmission of excitation force to the boom or body.

[0039] When the high-frequency hydraulic breaker is working normally, the cutter 7 is constantly in contact with the rock, so the damping mechanism 3 is usually under pressure, and the vibration movement of the excitation box 5 is limited to a small range. However, when the pressure is insufficient, or when the high-frequency hydraulic breaker is operating without load, the cutter 7 will reciprocate within the damping box 2 under the influence of the excitation movement of the excitation box 5. If the excitation amplitude of the excitation box 5 is too large, it may cause the excitation box 5 and the damping box 2 to collide, generating a large amount of noise, or even causing damage due to the collision. In some cases, it may even directly tear the air bladder in the damping mechanism 3. Since the rear of the excitation box 5 and the rear of the damping box 2 are connected by the damping mechanism 3, the impact generally occurs between the front of the excitation box 5 and the front of the damping box 2.

[0040] To minimize the damage caused by excessive vibration behaviors such as firing without a target, such as... Figure 2 As shown, in this embodiment of the application, a vibration protection mechanism 8 is provided between the excitation box 5 and the damping box 2. The vibration protection mechanism 8 is located on the vibration path of the excitation box 5 to limit the forward vibration amplitude of the excitation box 5 when the high-frequency breaker is working, and to prevent the excitation box 5 from directly colliding with the damping mechanism 3.

[0041] like Figure 2 and Figure 3 As shown, the vibration protection mechanism 8 can be installed between the top of the vibration chamber 5 and the top inner wall of the damping chamber 2, but it can also be installed between the bottom of the vibration chamber 5 and the bottom inner wall of the damping chamber 2. Here, we take... Figure 2 and Figure 3 The vibration protection mechanism 8 shown is located between the top of the vibration box 5 and the top inner wall of the shock absorber box 2. The specific structure of the vibration protection mechanism 8 is illustrated by taking this example. The vibration protection mechanism 8 includes a baffle 83, an elastic element 81 and an impact plate 82.

[0042] The baffle 83 is installed on the top of the vibration box 5 and extends upward for a certain distance.

[0043] The impact plate 82 is mounted on the shock absorber 2 via the elastic member 81. That is, the upper end of the elastic member 81 is connected to the upper inner wall of the shock absorber 2, and the impact plate 82 is connected to the lower end of the elastic member 81. Furthermore, the impact plate 82 is located in front of the vibration path of the baffle 83.

[0044] In this way, when the high-frequency hydraulic breaker performs excessive vibration activities such as dry-firing, if the excitation box 5 vibrates backward, its movement will be restricted by the damping mechanism 3. When the excitation box 5 vibrates forward, it will drive the baffle 83 to move forward. When the baffle 83 moves forward to a certain extent, it will collide with the impact plate 82, and then compress the elastic element 81 to deform. At the same time, the deformed elastic element 81 will provide a backward elastic force to the baffle 83, causing the excitation box 5 to move backward, thereby achieving the purpose of limiting the amplitude of the excitation box 5 and preventing the excitation box 5 from moving forward too far and colliding with the damping box 2. Since no collision occurs, noise generation is also reduced.

[0045] To prevent excessive deformation of the elastic element 81, which could cause the vibration chamber 5 and its baffle 83 to move forward excessively, the vibration protection mechanism 8 described in this embodiment may further include a limiting mechanism. This limiting mechanism is used to restrict the forward movement of the impact plate 82 and the baffle 83 beyond a preset distance. The limiting mechanism may be as follows: Figure 2 and Figure 3 The limiting plate 84 shown is disposed on the upper inner wall of the vibration box 5. The limiting plate 84 extends downward for a distance and is spaced in front of the impact plate 82 to abut against the front end of the impact plate 82, thereby preventing the impact plate 82 from moving forward too far, thus preventing the elastic element 81 from deforming too much, and further limiting the maximum forward movement distance of the baffle 83 (i.e., the vibration box 5).

[0046] Example 2

[0047] To prevent excessive deformation of the elastic element 81, Embodiment 2 also provides another structural form of the vibration protection mechanism 8. For example... Figure 4 and Figure 5 As shown, the vibration protection mechanism 8 in Embodiment 2 is similar to that in Embodiment 1, it still includes an elastic element 81, an impact plate 82, and a baffle 83, and the arrangement is the same. The difference lies in the fact that in Embodiment 2, the limiting mechanism of the vibration protection mechanism 8 includes a base 85. The impact plate 82, the elastic element 81, and the base 85 are connected sequentially, and the base 85 is also connected to the shock absorber box 2. Furthermore, the rear end of the impact plate 82 has a vertical plate 86 extending towards the inner wall of the shock absorber box 2, so that the base 85 is located in front of the movement path of the vertical plate 86.

[0048] In this way, when the vibration box 5 moves forward, the baffle 83 first contacts the rear end of the impact plate 82 and compresses the elastic element 81 to deform. When the amplitude of the vibration box 5 moving forward exceeds the preset value, the vertical plate 86 extending from the impact plate 82 will abut against the rear end of the base 85, thereby restricting the vertical plate 86 from moving further forward, preventing further deformation of the elastic element 81, and ultimately preventing the baffle 83 and the vibration box 5 from moving forward.

[0049] In Embodiments 1 and 2, the elastic element 81 can be elastic rubber. For example, it can be made of elastic rubber into a cylindrical shape or a hyperboloidal shape with a vertical cross-section, and multiple elements can be arranged sequentially along the vibration direction. Rubber elasticity refers to the property of a class of polymer materials, represented by natural rubber, to exhibit large reversible deformation under external force. It is affordable and has stable performance.

[0050] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] The above preferred embodiments should not be considered as limitations on the present invention, and the scope of protection of the present invention should be determined by the scope defined in the claims. For those skilled in the art, various improvements and modifications can be made without departing from the spirit and scope of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A high-frequency hydraulic breaker that enhances horizontal and inclined impact force, characterized in that: It includes a shock absorber box (2), a vibration excitation box (5), and a linkage mechanism; The excitation box (5) is hinged to the damping box (2) through the linkage mechanism. When the high-frequency breaker performs horizontal or upward / downward strikes, the excitation box (5) is suspended in the damping box (2) through the linkage mechanism to convert the weight of the excitation box (5) itself into inertial force to enhance the horizontal / inclined strike capability of the high-frequency breaker.

2. The high-frequency hydraulic breaker as described in claim 1, characterized in that: The linkage mechanism includes a first linkage mechanism (4) and a second linkage mechanism (6). When the high-frequency breaker performs horizontal or upward / downward strikes, the first linkage mechanism (4) and the second linkage mechanism (6) are respectively hinged between the front and rear sides of the excitation box (5) and the damping box (2), and the upper ends of the first linkage mechanism (4) and the second linkage mechanism (6) are hinged to the damping box (2), and the lower ends of the first linkage mechanism (4) and the second linkage mechanism (6) are hinged to the excitation box (5).

3. A high-frequency hydraulic breaker as described in claim 1, characterized in that: It also includes a vibration protection mechanism (8); the vibration protection mechanism (8) is located between the excitation box (5) and the damping box (2), and the vibration protection mechanism is located on the excitation path of the excitation box (5) to limit the forward vibration amplitude of the excitation box (5) when the high-frequency breaker is working.

4. A high-frequency hydraulic breaker as described in claim 3, characterized in that: The vibration protection mechanism (8) is located between the top of the vibration box (5) and the top inner wall of the damping box (2), or between the bottom of the vibration box (5) and the bottom inner wall of the damping box (2).

5. A high-frequency hydraulic breaker as described in claim 4, characterized in that: The vibration protection mechanism (8) includes a baffle (83), an elastic element (81), and an impact plate (82). The baffle (83) is installed on the excitation box (5); The impact plate (82) is mounted on the shock absorber (2) via the elastic element (81), and the impact plate (82) is located in front of the excitation path of the baffle (83).

6. A high-frequency hydraulic breaker as described in claim 5, characterized in that: The vibration protection mechanism (8) also includes a limiting mechanism; the limiting mechanism is connected to the shock absorber box (2) and is used to limit the impact plate (82) and the baffle (83) from moving forward beyond a preset distance.

7. A high-frequency hydraulic breaker as described in claim 6, characterized in that: The limiting mechanism includes a limiting plate (84); the limiting plate (84) is installed on the excitation box (5) and spaced apart in front of the impact plate (82).

8. A high-frequency hydraulic breaker as described in claim 6, characterized in that: The limiting mechanism includes a base (85); the elastic element (81) is mounted on the shock absorber box (2) via the base (85); the rear end of the impact plate (82) has a vertical plate (86) extending toward the inner wall of the shock absorber box (2); and the base (85) is located in front of the movement path of the vertical plate (86).

9. A high-frequency hydraulic breaker as described in claim 1, characterized in that: It also includes a shock absorption mechanism (3); the rear part of the excitation box (5) and the rear part of the shock absorption box (2) can be connected by the shock absorption mechanism (3).

10. A high-frequency hydraulic breaker as described in claim 1, characterized in that: It also includes a cutting tool (7); the cutting tool (7) is connected to the front end of the excitation box (5) and extends to the outside of the damping box (2).

Images