WO2021180010A1

WO2021180010A1 - Rock breaking device

Info

Publication number: WO2021180010A1
Application number: PCT/CN2021/079367
Authority: WO
Inventors: 凌杰
Original assignee: 成都市猎石者破岩科技有限责任公司
Priority date: 2020-03-11
Filing date: 2021-03-05
Publication date: 2021-09-16
Also published as: CN111236351A

Abstract

Provided is a rock breaking device. The rock breaking device comprises: a ripper, a small arm, and a ripper cylinder. The ripper comprises a ripper portion, a connection portion, a first weight portion, and a second weight portion. The first weight portion and the second weight portion are arranged opposite each other. The ripper portion is connected to the first weight portion and the second weight portion by means of the connection portion. The small arm is hinge-connected to the ripper by means of a first hinge-connection point. One end of the ripper cylinder is hinge-connected to the small arm by means of a second hinge-connection point, and the other end of the ripper cylinder is hinge-connected to the ripper by means of a third hinge-connection point. A first chamber is provided between the first weight portion and the second weight portion. At least a portion of the ripper cylinder and at least a portion of the small arm are located in the first chamber, such that the ripper cylinder is under protection, and the ripper cylinder and the small arm share space in a lateral direction.

Description

Rock breaking device

This application requires the Chinese patent application filed by the applicant on March 11, 2020 (application number: 202010164232.6; invention title: rock breaking device) and the Chinese patent application filed by the applicant on August 07, 2020 (application number: 202010790518.5) , The title of the invention, the priority of the rock breaking device); this application quotes the entire content of the above-mentioned application as a part of the content of this application.

Technical field

At least one embodiment of the present disclosure relates to a rock breaking device.

Background technique

In rock-breaking operations where the hardness of the rock formation is not particularly large, the rock-breaking device equipped with a ripper on the excavator is widely used due to its flexibility and high efficiency. The rock-breaking device usually includes a boom, a forearm and a ripper, and is driven by a hydraulic cylinder. To drive the big arm, the forearm and the ripper, so that the rock-breaking part of the ripper is in contact with the rock formation to break the rock. Of course, some rock breaking devices may not be equipped with a forearm.

Summary of the invention

At least one embodiment of the present disclosure provides a rock breaking device, including: a ripper, including a ripper, a connection part, a first weight part and a second weight part, the first weight part and the second weight part Oppositely arranged, the ripper is connected to the first weight part and the second weight part through the connecting part; the forearm is hinged to the ripper through the first hinge point; and the ripper oil cylinder, so One end of the ripper cylinder is hinged with the arm through a second hinge point, and the other end of the ripper cylinder is hinged with the ripper through a third hinge point, wherein the first weight part and the first A first cavity is arranged between the two weight parts, and at least a part of the ripper oil cylinder and at least a part of the forearm are located in the first cavity.

For example, according to the rock breaking device provided by some embodiments of the present disclosure, at least a part of the ripper oil cylinder and at least a part of the forearm are arranged in the first chamber in a vertical direction or a longitudinal direction; the ripper oil cylinder When fully recovered, the part of the forearm located in the first chamber is the part during recovery; when the ripper cylinder is fully extended, the part of the forearm located in the first chamber is the extended part; the part of the side area during recovery is The side area of the part when extended is more than 5 times.

For example, according to the rock breaking device provided by some embodiments of the present disclosure, the connecting part is sandwiched between the first weight part and the second weight part, and the first chamber is located far from the connecting part. On one side of the soil loosening part, the length of the first cavity in the vertical direction is greater than the thickness of the connecting part in the transverse direction.

For example, according to the rock breaking device provided by some embodiments of the present disclosure, when the ripper cylinder is recovered to the shortest position, in the lateral direction, at least half of the ripper cylinder is located in the first chamber.

For example, according to the rock breaking device provided by some embodiments of the present disclosure, the ripper has a rock breaking part located at the end of the ripper far away from the connecting part, and the ripper is located at the interface The weight and volume of the part far away from the rock breaking part are respectively greater than the weight and volume of the part of the ripper located on the interface near the rock breaking part, and the interface is the hinge axis of the first hinge point And the plane where the hinge axis of the third hinge point is located.

For example, according to the rock breaking device provided by some embodiments of the present disclosure, the weight and volume of each of the first weight portion and the second weight portion are respectively greater than those of the ripper located near the interface 50% of the weight and volume of the broken part.

For example, according to the rock breaking device provided by some embodiments of the present disclosure, when the ripper cylinder is recovered to the shortest position, more than half of the weight or volume of the forearm in the lateral direction is located in the first chamber.

For example, the rock breaking device provided according to some embodiments of the present disclosure further includes a boom. One end of the boom is hinged with the upper body of the excavator at the seventh hinge point, and the other end of the boom is hinged with the forearm at the eighth hinge point. One end of the cylinder is hinged with the boom at the ninth hinge point, the other end of the stick cylinder is hinged with the forearm at the tenth hinge point, one end of the lifting cylinder is hinged to the upper car body, and the other end of the lifting cylinder is hinged with the boom at the thirteenth point. The hinge point, when the stick cylinder and ripper cylinder are fully recovered,

The shortest distance between the first weight portion and the second weight portion and the thirteenth hinge point is the first distance, and the axial distance of the two lifting cylinders is the second distance; the first distance is smaller than the second distance.

For example, according to the rock breaking device provided by some embodiments of the present disclosure, when the ripper cylinder is fully recovered, in the lateral direction, at least 25% of the length of the ripper cylinder is located in the first chamber.

For example, according to the rock breaking device provided by some embodiments of the present disclosure, when the ripper cylinder is fully recovered, in the lateral direction, at least 25% of the side area of the forearm is located in the first chamber.

For example, according to the rock breaking device provided by some embodiments of the present disclosure, the first weight portion and the second weight portion have a cavity, and a filler is provided in the cavity.

For example, according to the rock breaking device provided by some embodiments of the present disclosure, the first weight portion is provided with a chamber A and a chamber B, a partition is provided between the chamber A and the chamber B without sharing a space, and the chamber B is sealed Filling is provided on the ground, and the chamber A is provided with an inlet and outlet, and the filler with adjusted weight can enter or exit the chamber A through the inlet and outlet.

For example, according to the rock breaking device provided by some embodiments of the present disclosure, the material inlet and outlet include an upper opening and a lower opening, and the upper opening can be located above the lower opening.

For example, according to the rock breaking device provided by some embodiments of the present disclosure, the chamber A can be located in front of the chamber B.

For example, according to the rock breaking device provided by some embodiments of the present disclosure, the rock breaking device further includes: a carrier; a boom, one end of the boom is connected to the carrier through a seventh hinge point, and the boom The other end is hinged with the arm through the eighth hinge point; a lifting cylinder, one end of the lifting cylinder is hinged to the carrier, and the other end of the lifting cylinder is hinged to the boom, so The lifting cylinder can telescopically drive the boom to move up and down around the seventh hinge point; and an arm cylinder, one end of the arm cylinder is hinged with the boom through a ninth hinge point, the arm cylinder The other end is hinged with the forearm through a tenth hinge point.

For example, according to the rock breaking device provided by some embodiments of the present disclosure, the weight of the ripper is greater than the weight of the big arm, and the weight of the ripper is greater than the weight of the forearm.

For example, the rock breaking device provided according to some embodiments of the present disclosure further includes a carrier, the carrier includes an excavator, the excavator has an upper body, a lower body, and a running mechanism, and the upper body is rotatably connected In the lower car body, the running mechanism is provided on the lower car body.

For example, according to the rock breaking device provided by some embodiments of the present disclosure, the rock breaking device further includes a carrier, the carrier includes an excavator, and the excavator has an upper body, a lower body, and a walking mechanism. Figure description

In order to explain the technical solutions of the embodiments of the present disclosure more clearly, the following will briefly introduce the drawings of the embodiments. Obviously, the drawings in the following description only refer to some embodiments of the present disclosure, rather than limiting the present disclosure. .

Figure 1 is a schematic diagram of a rock breaking device provided by an embodiment of the present disclosure (a side view when the stick cylinder and the ripper cylinder are partially extended);

Figure 2 is a front view of a rock breaking device provided by an embodiment of the present disclosure;

3 is a schematic diagram of a rock breaking device provided by an embodiment of the disclosure (a side view when the stick cylinder and the ripper cylinder are fully recovered);

4 is a schematic diagram of a rock breaking device provided by an embodiment of the disclosure (a side view when the stick cylinder is fully recovered and the ripper cylinder is fully extended);

Figure 5 is a structural diagram of the ripper in the rock breaking device provided by an embodiment of the present disclosure;

Fig. 6A is a side view of the ripper in the rock breaking device provided by an embodiment of the present disclosure;

Fig. 6B is a side view of the forearm in the rock breaking device provided by an embodiment of the present disclosure;

7A is a cross-sectional view of the first weight part and the connecting part in the rock breaking device provided by an embodiment of the present disclosure;

7B is a cross-sectional view of the first weight part, the connecting part and the soil loosening part in the rock breaking device provided by an embodiment of the present disclosure;

Fig. 7C is a structural diagram of a rock breaking device provided by an embodiment of the present disclosure;

Figure 8 is a side view of a ripper;

Figure 9 is a state diagram when the oil tank of the ripper is fully recovered;

Figure 10 is the state diagram when the ripper is fully extended;

Figure 11 is a partial schematic diagram of the forearm in the first chamber when the ripper is fully recovered;

Figure 12 is a partial schematic diagram of the forearm in the first chamber when the ripper is fully extended;

Figure 13 is a side view when the stick cylinder and the ripper cylinder are fully recovered;

Figure 14 is a top view of the stick cylinder and the ripper cylinder when fully recovered;

Fig. 15 is a cross-sectional view of a weight portion having a first chamber and a second chamber.

Reference signs: 201-first weight part; 202-second weight part; 203-connecting part; 4-boom; 5-forearm; 9. Ripper oil cylinder 10-walking mechanism; 112-vehicle; 11-upper car body; 12-lower car body; 14-interface; 204-soil loosening part; 15-breaking rock part; 16-center dividing line; 101 -First hinge point; 102- second hinge point; 103- third hinge point; 107- seventh hinge point; 108- eighth hinge point; 109- ninth hinge point; 1010- tenth hinge point; 1013- The thirteenth hinge point; A- included angle; 205-ear plate; 41-length of the first chamber; 42-part when reclaimed; 43-part when extended; D-first distance; E-second distance H-second included angle; I-horizontal line; 71-chamber A; 72-chamber B; 73; upper opening; 74-lower opening.

Detailed ways

Unless otherwise defined, the technical terms or scientific terms used in the present disclosure shall have the usual meanings understood by those with ordinary skills in the field to which this disclosure belongs. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity, or importance, but are only used to distinguish different components. Similarly, "including" or "including" and other similar words mean that the element or item appearing before the word covers the element or item listed after the word and their equivalents, but does not exclude other elements or items.

For the convenience of description, in some drawings, "up", "down", "front", and "rear" are given. In the embodiments of the present disclosure, the vertical direction is the direction from top to bottom, and the vertical direction It is the direction of gravity, and the horizontal direction is the direction perpendicular to the vertical direction. For example, the vertical direction in FIG. 1 is the direction from top to bottom. For example, the direction of rotation of the upper body of the excavator relative to the lower body is transverse. For another example, the lateral direction is a direction perpendicular to the opposite side surfaces of the first weight portion and the second weight portion, but is not limited thereto. The rotation direction of the upper body of the excavator relative to the lower body is consistent with the lateral direction defined by the direction perpendicular to the opposite side surfaces of the first weight portion and the second weight portion. For example, the horizontal direction in FIG. 1 is a direction perpendicular to the paper surface. For example, the longitudinal direction is a direction perpendicular to the lateral direction in a plane perpendicular to the vertical direction, but is not limited thereto. For example, the longitudinal direction in FIG. 1 is from left to right or from right to left.

Generally, the hinge part refers to the position where two or more components are connected, which usually includes the hinge hole, contact surface (mating surface), hinge axis, etc. required for the connection of the components. At least one component’s hinge hole is relative to The hinge shaft rotates. For example, the components are connected by a hinge shaft, and the components can rotate around the hinge shaft.

For the rock breaking device, by optimizing the lever ratio and weight distribution of the boom, forearm and ripper, the performance of the rock breaking device can be greatly improved.

In some rock breaking devices, through optimization of the lever ratio of the connecting point of the boom and forearm and the increase in the weight of the ripper, especially the optimization of the structure of the ripper, the weight and volume of the upper part of the ripper are relatively larger. Therefore, it is easy to install functional components such as the shock device and the counterweight in the ripper, and the oil cylinder of the ripper can also obtain a larger installation space.

In some rock breaking devices, sliding counterweights are provided on the boom to adjust the center of gravity of the rock breaking device, but the weight of the ripper is limited and the energy loss is large.

Due to the large weight and volume of the ripper, it is easy to cause the position of the ripper to be too far away from the carrier, such as an excavator, which results in a larger lifting load of the lifting cylinder when the total weight of the rock breaking device is equal. Lifting becomes slower, which affects the rock breaking efficiency. If the longitudinal width of the forearm is sacrificed, the longitudinal structural strength of the forearm is likely to be adversely affected.

Although it is possible to increase the weight of the ripper or install a counterweight on the ripper, due to the limited total weight of the rock breaking device, the rock breaking capacity is still greatly restricted.

In addition, due to poor working conditions, the ripper oil cylinders in some rock breaking devices are susceptible to being touched by rock formations or other obstacles.

In the embodiment of the present disclosure, a first cavity is provided in the ripper, so that part or all of the ripper oil cylinder is located in the first cavity, so that the ripper oil cylinder is not easily damaged. The smallest part of the forearm is also located at the first cavity of the ripper. In the case of the chamber, the ripper and the forearm share the space in the horizontal direction, which is beneficial to the position distribution of the forearm and the ripper in the longitudinal direction.

The rock breaking device provided by the embodiment of the present disclosure includes an excavator as an example, but is not limited to this.

First, a rock breaking device provided by an embodiment of the present disclosure will be described with reference to FIGS. 1 to 6B.

1 to 4 are schematic diagrams of a rock breaking device provided by an embodiment of the disclosure. Figure 1 is a side view of the stick cylinder and the ripper cylinder partially extended, Figure 2 is the front view of the rock breaking device; Figure 3 is the side view when the stick cylinder and the ripper cylinder are fully recovered; Figure 4 is the stick The side view when the oil cylinder is fully recovered and the ripper oil cylinder is fully extended; FIG. 5 is a structural diagram of the ripper in the rock breaking device provided by an embodiment of the present disclosure; FIG. 6A is the rock breaking device provided by an embodiment of the present disclosure The side view of the ripper; Figure 6B is a side view of the forearm in the rock breaking device provided by an embodiment of the disclosure.

As shown in FIGS. 1 to 4, a rock breaking device provided by an embodiment of the present disclosure includes: a ripper 6, a forearm 5, and a ripper cylinder 9.

As shown in FIGS. 1 to 5, the ripper 6 includes a ripper portion 204, a connecting portion 203 (as shown in FIG. 5, the connecting portion 203 is not shown in FIGS. 1 to 4), a first weight portion 201, and a second weight portion.部202。 Department 202. As shown in FIGS. 2 to 5, the first weight portion 201 and the second weight portion 202 are arranged opposite to each other. As shown in FIG. 5, the soil loosening part 204 is connected to the first weight part 201 and the second weight part 202 through the connecting part 203, and a first cavity 301 is provided between the first weight part 201 and the second weight part 202.

As shown in FIGS. 1 to 6B, the forearm 5 is hinged with the ripper 6 through the first hinge point 101. As shown in FIGS. 1 to 6B, the forearm 5 is hinged with the first weight portion 201 and the second weight portion 202 through the first hinge point 101. As shown in FIGS. 2 to 6B, one end of the ripper cylinder 9 is hinged with the arm 5 through a second hinge point 102, and the other end of the ripper cylinder 9 is hinged with the ripper 6 through a third hinge point 103. As shown in FIGS. 2 to 6B, the other end of the ripper cylinder 9 is hinged with the first weight portion 201 and the second weight portion 202 through a third hinge point 103. As shown in FIGS. 1 to 4, when the ripper oil cylinder is completely recovered, at least a part of the ripper oil cylinder 9 and at least a part of the arm 5 are located in the first chamber 301.

Regarding the amount of at least a part of the forearm 5, the description shall be based on the side area of the forearm 5, which occupies at least 25% of the side area of the forearm 5; similarly, the amount of at least a part of the ripper cylinder 9 is The length of the oil tank of the ripper is explained, and it occupies at least 25% of the length of the oil tank of the ripper.

When the ripper cylinder 9 is extended, the amount of the forearm 5 and the ripper cylinder located in the first chamber 301 will be significantly reduced; for example, the third hinge point 103 can also be set as the first hinge point 101 shown in the figure. Ear plate (not shown on the figure) to reduce the thickness and reduce the length of the connecting shaft.

Regarding the arrangement of the third hinge point 103 (not shown in the figure), in addition to the shape shown in Figs. 1 to 6B, the third hinge point 103 includes two ear plates, and the two ear plates are arranged at the connecting portion 203; , The ear plate can also be arranged at the front position above the soil loosening part 204.

In the rock breaking device provided by the embodiment of the present disclosure, by using the first weight portion 201 and the second weight portion 202 to form the first chamber 301, at least a part of the ripper cylinder 9 can be located in the first chamber 301, or At least a part of the forearm 5 is located in the first chamber 301, or at least a part of the ripper cylinder 9 and at least a part of the forearm 5 are both located in the first chamber 301, so as to protect and loosen the ripper cylinder 9 The earthenware cylinder 9 and the forearm 5 share the space of the first chamber 301 in the lateral direction.

It should be noted that, in the embodiment of the present disclosure, the ripper cylinder 9 is located in the first chamber 301, and its structural features and effects are different from those of the conventional rock breaking device. The ripper cylinders are located on two oppositely arranged ripper Between the ear plates, the weight and volume of the ear plates of the ripper are relatively small in technology, and they can only play the role of connecting the oil tank of the ripper and the ripper.

For ease of description, when the ripper cylinder is fully recovered, the part of the forearm located in the first chamber is called the recovery part; when the ripper cylinder is fully extended, the part of the forearm in the first chamber is called extended Part of the time. As shown in Figure 9, Figure 10, Figure 11 and Figure 12, Figure 9 is the state when the ripper oil cylinder 9 is fully recovered; Figure 10 is the state when the ripper oil cylinder 9 is fully extended; the shaded part in Figure 11 is the ripper When the oil cylinder 9 is fully recovered, the arm 5 is located in the first chamber 301 (that is, the part 42 at the time of recovery); the shaded part in Figure 12 is the part of the arm 5 in the first chamber 301 (and extended Time part 43). In these two states, the area of the side of the part 42 at the time of recovery is much larger than the area of the side of the part 43 at the time of extension. In most cases, the area of the side of the part 42 at the time of recovery is more than 5 times the area of the part 43 at the time of extension. , In order to facilitate the first weight portion 201 and the second weight portion 202 to have a larger weight, thereby increasing the undercutting force of the ripper. For example, the area of the part 42 at the time of recovery is 1.8 square meters, and the area of the part 43 at the time of extension is 0.3 square meters.

For example, the interface 14 (refer to FIG. 6A) is a plane where the hinge axis of the first hinge point 101 and the hinge axis of the third hinge point 103 are located. The rock breaking part 15 is located at the end of the soil loosening part 204. The rock breaking part 15 is located at one end of the soil loosening part 204 away from the connecting part 203.

For example, the end of the loosening part 204 away from the first weight part 201 and the second weight part 202 is the rock breaking part 15, and the rock breaking part 15 is usually a detachable bucket tooth to facilitate replacement after wear. When breaking the rock, the bucket teeth are in contact with the rock formation. The loosening part 204 enters the loosened rock formation along with the breaking part 15 while the first weight part 201 and the second weight part 202 do not enter. Normally, the length of the loosening part 204 Determines the depth that can break the rock. The length of the loosening part 204 should be comprehensively measured according to the hardness of the rock formation and work efficiency. The longer the length of the loosening part 204, the smaller the digging force of the breaking part 15 under the same conditions. , And vice versa, the bigger it is. Under normal circumstances, when the rock layer hardness is relatively small, the length of the loosening part can be set to be relatively large, which is more conducive to the improvement of work efficiency. If the rock layer hardness is relatively large, the length of the loosening part 204 is set to be relatively small .

The loosening part 204 and the connecting part 203 can be integrally arranged, for example, made of a single steel. Since the loosening part 204 is subjected to greater force, higher strength steel should be used; the loosening part 204 and the connecting part 203 can also be passed through After the first weight part 201 and the second weight part are separately manufactured, they can be connected to the connecting part 203 by welding. This way makes the ripper 6 have better structural strength and integrity, which is beneficial for rock breaking. The weight of the first weight part 201 and the second weight part 202 is transmitted to the rock breaking part 15.

The first weight portion 201 and the second weight portion 202 can also be detachably connected to the connecting portion 203 by bolts and pins, etc. However, the structure of the ripper 6 in a detachable connection mode is compared with the welding connection method The strength is relatively low, and it is relatively unfavorable for the first weight portion 201 and the second weight portion 202 to transmit gravity to the rock breaking portion 15.

The first weight portion 201 and the second weight portion 202 and the connecting portion 203 and the loosening portion 204 can also be processed by a single steel. This method is usually expensive, but the use effect is better; it can also be formed by casting at one time. Its use effect is also better.

With the development of material technology, scarifiers can also be made of other materials and methods, such as 3D printing.

As shown in Figures 1 to 4, the rock breaking device also includes a boom 4 and a stick cylinder 8. One end of the big arm 4 is connected to the carrier 112 through a seventh hinge point 107, and the other end of the big arm 4 is hinged to the small arm 5 through an eighth hinge point 108. One end of the arm cylinder 8 is hinged with the boom 4 through a ninth hinge point 109, and the other end of the arm cylinder 8 is hinged with the arm 5 through a tenth hinge point 1010.

Regarding the arrangement of the first chamber 301, referring to FIGS. 3, 4, and 5, it can be seen through analysis that a connecting portion may also be provided between the first weight portion 201 and the second weight portion 202 in the upper part of the first chamber 301 (Not shown in the figure), for example, it is arranged above the first weight portion 201 and the second weight portion 202 to increase the structural strength, that is, the first cavity 301 does not penetrate the ripper 6 in the vertical direction. As long as the first weight portion 201 and the second weight portion 202 do not touch the forearm 5 and the ripper cylinder 9 during operation. When the lengths of the first weight portion 201 and the second weight portion 202 toward the upper side are short, the width of the first weight portion 201 and the second weight portion 202 in the lateral direction is wider, and the first weight portion 201 and the second weight portion 202 It also has a relatively large weight. At this time, the ripper cylinder 9 may not be in the first chamber 301 in the lateral direction. In order to prevent the width of the first weight portion 201 and the second weight portion 202 from being too wide, when the stick When the oil cylinder 8 is fully recovered, at least a part of the forearm 5 is located in the first chamber 301, and the lateral space can also be fully utilized to facilitate the setting of the center of gravity of the rock breaking device. Similarly, when the arm cylinder 8 is completely recovered and the arm 5 is not located in the first chamber 301, in order not to make the width of the first weight portion 201 and the second weight portion 202 too large in the lateral direction, the first weight portion 201 and The length of the second weight portion 202 facing upward is longer, which can also make the first weight portion 201 and the second weight portion 202 have a larger weight, and can also make full use of the lateral space to facilitate the setting of the center of gravity of the rock breaking device; When the ripper oil cylinder is fully recovered, the ripper oil cylinder 9 will be located in the first chamber 301. Of course, if the ripper oil cylinder 9 is completely recovered, most of the ripper oil cylinder 9 and a part of the forearm 5 are located in the first chamber at the same time, the effect will be better.

In addition, the ripper oil cylinder 9 is located in the first chamber 301, which also prevents the ripper oil cylinder 9 from contacting obstacles and causing damage to the piston rod or pipeline. Such a structural arrangement makes the ripper oil cylinder less likely to be damaged when the ripper is heavy, or the ripper and the forearm can share space in the lateral direction.

For example, in the embodiment of the present disclosure, the ripper oil cylinder 9 is located in the first chamber 301 and is not limited to the length of the ripper oil cylinder 9 located in the first chamber 301.

As shown in Fig. 11 and Fig. 12, the projection in the lateral direction can also be understood in the lateral direction, as well as the view from the lateral direction.

In some embodiments, more than half of the ripper oil cylinder 9 is located in the first chamber 301 in the lateral direction, so as to achieve a better effect of protecting the ripper oil cylinder 9. Such a structural arrangement makes the ripper oil cylinder 9 less susceptible to damage when the weight of the ripper 6 is large, or enables the ripper 6 and the forearm 5 to share space in the lateral direction.

For example, as shown in Figures 1 to 4, at least a part of the ripper cylinder 9 and at least a part of the arm 5 are located in the first chamber 301, and at least a part of the ripper cylinder 9 and at least a part of the arm 5 are in a vertical position. It is arranged in the first chamber 301 in the direction or longitudinal direction. Therefore, the first chamber 301 can be fully utilized, and the ripper cylinder 9 and the forearm 5 are respectively arranged in different parts of the first chamber 301, sharing the first chamber without interfering with each other. For example, at least a part of the ripper oil cylinder 9 and at least a part of the arm 5 are arranged in the first chamber 301 in the vertical direction or longitudinally, which may mean that at least a part of the ripper oil cylinder 9 and the arm 5 are in use. At least a part of φ is arranged in the first chamber 301 in the vertical direction or the longitudinal direction.

For example, as shown in FIG. 5, the connecting portion 203 is sandwiched between the first weight portion 201 and the second weight portion 202, the first cavity 301 is located on the side of the connecting portion 203 away from the ripper portion 204, and the first cavity The length of the chamber 301 in the vertical direction is greater than or equal to the thickness of the connecting portion 203 in the lateral direction. For example, the thickness of the connecting portion 203 is also the lateral width of the first cavity 301.

For example, in the front view, the length of the first chamber 301 in the vertical direction is greater than the length (thickness) of the connecting portion 203 in the lateral direction, so that the first weight portion 201 and the second weight portion 202 can have a larger weight. In this case, the width of the joint between the loosening part 204 and the first weight part 201 and the second weight part 202 will not be too large, which is more conducive to rock breaking operations. The reason is that the position is at the upper part of the loosening part 204. When the soil part 204 completely enters the rock formation, the volume of the broken rock layer will increase. The upper part of the rock layer is loose rock. Letting some loose rocks above the loose soil part 204 is beneficial to obtain a greater rock breaking depth. Damage to the ripper oil cylinder and other components, if the width of the connecting portion 203 is too large, it is likely to block loose rocks.

As shown in FIG. 8, since the shape of the first chamber 301 may be irregular, the length 41 of the first chamber 301 in the vertical direction is the most from the interface 14 to the first weight portion 201 or the second weight portion 202. Strengths prevail.

In fact, the weight part cannot enter the rock formation during operation. When the loosening part 204 completely enters the rock formation, there are usually some loose rocks that can be located in a part of the position above the loosening part 204, which is conducive to the depth and efficiency of rock breaking; For this reason, the lateral width of the position cannot be too large, and the width of the position above the weight part that is not prone to contact can be set relatively large (not shown in the figure), so that the weight part has a larger weight, and then Improve the cutting force. Regarding the longitudinal length of the connecting portion 203, it is generally proportional to the distance from the third hinge point 103 to the first hinge point 101. When the distance from the first hinge point 101 to the third hinge point 103 is greater, the longitudinal length of the connecting portion 203 can be The setting is relatively large, which is conducive to obtaining better structural strength of the connection.

The first weight portion 201 and the second weight portion 202 are respectively located on both sides of the first chamber 301. The first weight portion 201 and the second weight portion 202 are used to increase the weight of the ripper 6 and have relatively large weight and volume. . Usually two weight parts are provided, of course, other numbers of weight parts can also be provided; for example, 3 weight parts, 4 weight parts, 6 weight parts, etc. are provided. In the case of three weight parts, two first chambers 301 can be provided, two ripper oil cylinders can be provided, and one ripper oil cylinder can be provided for each first chamber 301, and so on, but not limited to this . In the embodiment of the present disclosure, two weight parts: a first weight part 201 and a second weight part 202 are provided as an example for description.

For example, as shown in Figs. 4 and 5, the first chamber 301 penetrates the ripper 6 in the longitudinal direction or upwards at the middle position of the ripper 6 away from the ripper 204, and the ripper 204 is connected by the connecting part 203. The first weight portion 201 and the first weight portion 202, and the connecting portion 203 is located near the interface 14. The interface 14 is shown in FIG. 6A, and the ripper 6 is in contact with the rock formation through the rock breaking part 15 to break the rock.

As shown in FIG. 6A, the interface 14 is a plane where the hinge axis of the first hinge point 101 and the hinge axis of the third hinge point 103 are located. For example, referring to FIGS. 1, 2 and 6A, the weight and volume of the portion 61 of the ripper 6 located at the interface 14 away from the rock breaking part 15 are respectively larger than the part 62 of the ripper 6 located at the interface 14 near the rock breaking part 15 Therefore, the ripper 204 has a smaller volume, which is beneficial for rock entry, and at the same time, it is advantageous for the ripper 6 to have a larger weight. As shown in FIG. 6A, the ripper 6 is divided into two parts according to the interface 14, that is, is divided into a part 61 and a part 62 located on both sides of the interface 14, respectively. The portion 61 may be referred to as the first portion, and the portion 62 may be referred to as the second portion.

Further for example, the weight and volume of each of the first weight portion 201 and the second weight portion 202 are respectively greater than 50% of the weight and volume of the portion of the ripper 6 located at the interface 14 near the rock breaking portion 15, which is beneficial to loosen The loosening part 204 of the soil tool has a reasonable length to obtain a larger weight, which reduces the energy transmission of the oil cylinder of the soil tool, reduces energy loss, and improves the rigid transmission capacity of the gravity transmission of the rock breaking device to the rock breaking part 15.

For example, the interface 14 refers to a surface formed in the transverse direction by the axis of the first hinge point 101 and the third hinge point 103, and is a virtual surface used to describe the structure of the ripper 6. In other words, the interface 14 refers to the surface where the hinge axis of the first hinge point 101 and the hinge axis of the third hinge point 103 are located.

Since the position between the ripper 6, the ripper cylinder 9, and the arm 5 is the smallest when the ripper cylinder 9 is fully recovered, the ripper cylinder 9 is used for complete recovery (the ripper cylinder 9) in the embodiment of the present disclosure. The state when the oil cylinder 9 is recovered to the shortest position) will be described.

For example, in some embodiments, in order to better protect the ripper cylinder 9, when the ripper cylinder 9 is recovered to the shortest position, at least half of the ripper cylinder 9 is located in the first chamber 301. In other words, when the ripper oil cylinder 9 is recovered to the shortest position, at least half of the length of the ripper oil cylinder 9 is located in the first chamber 301. For example, when the ripper cylinder 9 is fully recovered, the length is 2100 mm. In the horizontal direction, the end of the ripper cylinder 9 connected to the ripper 6 has a length of 1860 mm located in the first chamber 301; when the ripper cylinder 9 is fully extended, There is a length of 920 mm in the first chamber 301, and the lateral width of the first chamber 301 is 370 mm. As the ripper cylinder 9 is gradually located in the middle of the first chamber 301 from the third hinge point 103 to the second hinge point 102 Position, so it is not easy to touch other obstacles, especially loose rock formations. It is better to set a baffle between the first weight part 201 and the second weight part 202; For ear plates with a smaller connection volume, the least distinguishing effects are as follows: 1. The protection length of the ripper oil cylinder 9 is significantly longer. In the prior art, when the weight of the ripper 6 is significantly smaller than the forearm 5, the loose When the earthenware cylinder 9 is fully extended, its length at the third hinge point 103 is usually within 300 mm between the ear plates, which is easily damaged. In the prior art solution, in order to solve this technical problem, it is usually not easy. The cylinder barrel of the damaged ripper cylinder 9 faces the third hinge point 103, and the easily damaged piston rod faces the second hinge point 102, but this will result in the need to provide a hydraulic oil channel in the piston rod, which will increase the ripper cylinder 9 Cost and reduce the strength of the piston rod; 2. Effectively improve the strength of the baffle, because there is a relatively larger connection position of the baffle between the first weight part 201 and the second weight part 202, which is beneficial to the baffle to obtain better structural strength In the prior art, in order to reduce the possibility of damage to the ripper oil cylinder, a baffle plate is also provided at the ear plate, but because the connection position is small, it is easy to damage.

When the ripper 6 is significantly heavier than the arm, if the first chamber 301 is not provided, the ripper cylinders 9 are located on both sides of the ripper's weight. Because the ripper cylinders 9 are located on both sides of the ripper, they are relatively easy to damage; however, The probability of damage will be lower than that of a rock breaking device with a ripper whose weight is significantly lower than that of the forearm. The reason is that when the weight of the ripper 6 is relatively large, it is easy to set a relatively large weight on the part of the interface 14 far from the rock breaking part 15 The relatively large weight part can protect the ripper cylinder 9 to a certain extent; and the ripper cylinder 9 located in the first chamber 301 is less likely to be damaged than the ripper cylinders located on both sides of the weight part. .

As shown in FIG. 7C, when the ripper cylinder 9 and the stick cylinder 8 are fully extended, the ripper cylinder 9 is likely to be damaged by contact with loose rock formations or other obstacles toward the position of the third hinge point.

In some embodiments, as shown in FIG. 15, FIG. 15 is a cross-sectional view of the ripper 6, wherein the horizontal line is the chamber B, and the front of the chamber B is the chamber A; the first weight portion 201 and the second weight portion 202 A chamber A71 and a chamber B72 are provided. A partition is provided between the chamber A71 and the chamber B72, and the two chambers do not share space; an upper opening 73 is provided above the chamber A71, and a lower opening is provided below the chamber A71 74. The upper opening 73 and the lower opening 74 are usually provided with a cover plate. The chamber A71 can be filled with fillers with good fluidity and high specificity such as steel shot and iron sand to improve the flexibility of adjusting the weight of the ripper 6. Compared with the adjustment of the counterweight, it has better flexibility. The specific operation method When you need to increase the weight, remove the upper plate and fill the filler into the chamber A. When you need to reduce the weight, remove the lower cover and use the fluidity to discharge the filler; the chamber B is sealed It is filled with concrete and scrap steel. Compared with steel shot and iron sand, the filling of chamber B has lower cost and stability. The better stability is not prone to creeping, which is conducive to the rigid transmission of gravity and improves the damage. Rock effect; the advantage of this setting is that in actual use, the ripper 6 increases or decreases the weight according to the hardness of the rock formation to achieve better operating efficiency. This adjustment range is limited and usually does not need to reach the total weight of the filler When it is necessary to increase the setting of the passage through the chamber A71 and the chamber B72, it is beneficial to improve the use effect of the ripper 6 and the convenience of entering and exiting through the filler; in other embodiments, the upper opening 73 and the lower opening 74 may not be provided , And set an inlet and outlet if the inlet and outlet are facing upwards, when you need to reduce the weight, you need to turn the ripper 6 upside down, usually you need to remove the ripper 6 to complete, if the inlet and outlet are facing the front or the side, the same is required Remove the ripper 6, if the material inlet and outlet are facing downwards, it is not conducive for the filler to enter the chamber A, which will reduce the convenience of weight adjustment.

For example, in some embodiments, when the ripper cylinder 9 is recovered to the shortest position, at least half of the forearm 5 is located in the first chamber 301; for example, at least half of the forearm 5 is located in the first chamber 301 It may mean that at least half of the area of the forearm 5 (for example, the area of the side) is located in the first chamber 301, or that at least half of the volume of the forearm 5 is located in the first chamber 301. The above design is conducive to the setting of the center of gravity of the rock breaking device. The reason is that when the rock breaking device includes an excavator, the lifting cylinder used when the excavator is equipped with the excavating arm is usually used. Due to the original lifting capacity and stroke setting of the lifting arm It is relatively reasonable and avoids waste. The hinge point (the thirteenth hinge point 1013) of the lift cylinder 7 and the boom 4 is usually relatively forward; it is easy to cause the center of gravity of the rock breaking device to be too forward. According to the analysis of the lever principle, it can be seen that the above design is not conducive to the lifting of the lifting cylinder 7, and it is also not conducive to the rock breaking part 15 to make full use of the excavator's gravity through the rock breaking device to obtain a larger down-cutting ability. Although the rock-breaking part 15 can reach a position farther from the excavator and has a larger operating range, the rock-breaking device is limited by the structure, and the rock-entry angle of the loosening part 204 when breaking the rock has a greater impact on the rock-breaking, which is reasonable The rock-entry angle is more conducive to the cutting of the rock-breaking part 15. The range of good rock-entry angles that the loosening part 204 can achieve is the usual working range of the rock-breaking part 15 while the usual working range of the rock-breaking part 15 is limited.

For example, the range that the rock breaking part 15 can reach and the range of common operations include the range that the rock breaking part 15 can reach in the longitudinal width and the range that the excavator can reach in the lateral direction when the excavator rotates. In the lateral direction, since the excavator can rotate 360°, so In the following description, the vertical width is used.

For example, the longitudinal width of the usual working range of the loosening part 204 is smaller than the longitudinal width of the range that the rock breaking part 15 can reach, and a part of the range that the rock breaking part 15 can reach is not conducive to the rock breaking part in the longitudinal direction due to the rock entry angle of the loosening part 204 15 cuts into the rock formation, so it will not be used as a lower cut point in actual operations. For example, the longitudinal width of the reachable range of the rock breaking part 15 is 3000 mm, and the longitudinal width of the normal working range of the loosening part 204 is 2000 mm.

For example, take the excavator in the state shown in Figure 1 for example (the usual working range of the loosening part 204 and the reachable range of the rock breaking part 15 are not shown on the figure). The longitudinal width of the operating range is 2000 mm. The walking mechanism 10 will not affect the normal operation of the rock breaking device. It is an ideal distance setting. If the forearm 5 and the ripper 6 do not have a shared space in the horizontal direction, it is necessary to ensure the longitudinal direction of the common operating range. In the case of a width of 2000 mm, the longitudinal width of the commonly used operating range is usually more than 1000 mm from the walking mechanism 10 (longitudinal width), which causes a waste of distance and easily causes the center of gravity of the rock breaking device to be too large from the center of gravity of the excavator If part or all of the forearm 5 and the ripper 6 share a space in the lateral direction, it is helpful to avoid the center of gravity of the rock breaking device from being too far away from the center of gravity of the excavator.

Of course, if the original excavator's lifting cylinder is not used, the lifting cylinder is replaced again, and the distance between the seventh hinge point 107 and the thirteenth hinge point 1013 is reduced, and the forearm 5 and the ripper 6 do not share the lateral space. It may be possible to obtain a reasonable distance from the commonly used rock breaking range to the excavator, but it will cause unnecessary waste.

As shown in Figures 3 and 6B, when the ripper cylinder 9 is recovered to the shortest position, more than half of the weight or volume of the forearm 5 in the lateral direction is located in the first chamber 301, in order to describe that the forearm 5 is located in the ripper 6. The amount in the first chamber 301 is divided by the weight or volume of the forearm 5. Of course, it can also be divided in other ways.

As shown in Figures 3 and 6B, when the ripper cylinder 9 is recovered to the shortest position, the portion 51 of the forearm 5 located on the center line 16 facing the ripper 6 can be located in the first chamber 301 from the lateral direction. Describe the amount of the forearm 5 located in the first chamber 301 of the ripper 6. The middle dividing line 16 refers to dividing the area of the side of the forearm 5 into two parts, the areas of the two parts are equal, and the middle dividing line 16 passes through the first chamber. A hinge point 101. That is, the center dividing line of the forearm 5 is a line of the forearm 5 that passes through the first hinge point 101 and divides the area of the side of the forearm 5 into two equal parts. Of course, the specific position of the center dividing line 16 is more flexible, and it does not need to pass through the first hinge point 101, as long as the forearm 5 can be divided into two equal parts from the lateral direction. The division method is based on the forearm 5 and the ripper 6. The structure settings are determined. In FIG. 6B, the center dividing line 16 is taken as an example for description. In other embodiments, the center dividing line 16 may not be a straight line. For example, the center dividing line 16 may also be a curved line or a broken line. When divided by area, when the ripper cylinder 9 is recovered to the shortest position, the portion 51 of the forearm 5 located on the center line 16 facing the ripper 6 from the lateral direction can be located in the first chamber 301, which can be equivalent to when the ripper When the cylinder 9 is recovered to the shortest position, more than half of the weight or volume of the forearm 5 in the lateral direction is located in the first chamber 301. The forearm 5, the first weight portion 201, or the second weight portion 201 may adopt a regular shape or an irregular shape. The embodiment of the present disclosure has an effect on the forearm 5, the first weight portion 201, and the second weight portion 201. The shape of is not limited.

The larger longitudinal width of the forearm 5 is beneficial to increase the strength of the forearm 5. In the case that the forearm 5 has a relatively large longitudinal width, the more the forearm 5 is located in the first chamber 301, the forearm 5 and The more space the ripper 6 shares, the smaller the angle of the included angle A (as shown in Figure 6A). The smaller the angle of the included angle A, the less likely it is for the ripper 6 to come into contact with obstacles when breaking rocks. . As shown in FIG. 6A, the included angle A refers to the hinge axis and the third hinge point between the side far from the first hinge point 101 of the two sides of the ripper 6 close to the third hinge point 103 and the first hinge point 101. The included angle of the plane (interface 14) where the hinge axis of 103 is located. That is, the included angle A refers to the plane where the side of the ripper 6 located above the ripper portion 204 and facing forward and the hinge axis of the first hinge point 101 and the hinge axis of the third hinge point 103 are located (interface 14)的角。 The included angle. The ripper 6 and the forearm 5 share the lateral space, which is beneficial to obtain the angle A with a smaller angle.

For example, as shown in FIGS. 3 and 6B, in some embodiments, when the ripper cylinder 9 is recovered to the shortest position, the portion of the forearm 5 that is located on the center line facing the ripper 6 can be located in the first cavity Room 301.

In the rock breaking device provided by the embodiment of the present disclosure, the structure of the ripper 6 can share the lateral space with the forearm 5 or the ripper cylinder 9, which facilitates the setting of the center of gravity of the rock breaking device. The first weight portion 201 and the second weight The arrangement of the portion 202 and the first chamber 301 is beneficial to protect the ripper oil cylinder 9 while making the ripper 6 relatively large in weight and also beneficial to obtain a reasonable range of common operations.

In order to further describe the effect that the forearm 5 can be located in the first chamber 301 and the different structure of the first chamber 301 for connecting the ripper oil cylinder 9 and the ripper 6 in the prior art, please refer to Figures 13 and 14.

As shown in Figure 13, when the ripper cylinder 9 and the stick cylinder 8 are fully recovered, the shortest distance between the first weight portion 201 and the second weight portion 202 and the thirteenth hinge point 1013 is denoted by D, when the first weight portion When the distance between 201 and the thirteenth hinge point 1013 is different from the distance between the second weight portion 202 and the thirteenth hinge point 1013, the shortest distance shall prevail; for ease of description, a horizontal line I is set through the first hinge point 101, and the first The hinge point 101 and the third hinge point 103 form a second angle H with the horizontal line I. The larger the second included angle H is, the larger the effective rotation range that the ripper 6 can obtain in actual operation, which is beneficial to improve the flexibility of the ripper 6.

Referring to Figure 13, Figure 13 is a rock breaking device carried by a 50-ton excavator. The 50-ton excavator is a strong representative of this type of excavator; it includes the boom 4, the forearm 5 and the ripper 6. The ripper 6 includes a first weight portion 201 and a second weight portion 202. Both the first weight portion 201 and the second weight portion 202 have a cavity, and the cavity is provided with a filler, which is beneficial to reduce the first weight portion 201 and the second weight portion 201 and the second weight portion 202. Second, the cost of the weight part 202. Between the first weight portion 201 and the second weight portion 202 is a first chamber 301, and the forearm 5 and the ripper cylinder 9 can be located in the first chamber. The two sides of the arm 5 have a total area of 2.52 square meters. When the stick cylinder 9 is fully recovered, a single side of the arm 5 has 0.62 square meters and the boom 4 shares a space horizontally. The ripper 6 weighs 11 tons, the arm 5 weighs 3.5 tons, and the boom 4 weighs 4.7 tons. Among them, the weight of the first weight part 201 and the second weight part 202 are 4.5 tons, and the volume is 1.4 cubic meters. The part of the interface 14 facing the rock breaking part 15 has a weight of 1.2 tons, and the connecting part 203 has a weight of 0.8 tons and a volume of about 0.1 cubic meters.

As shown in Fig. 14, the axial distance of the two lifting cylinders 7 is a second distance E, and the second distance E is 870 mm.

Regarding the second distance E, there are certain differences in the second distance E between different excavators. Generally, the larger the excavator, the greater the second distance E. In the prior art, the second distance E is smaller than the first distance D.

Here, the ripper oil cylinder 9 is expanded and contracted, the stick oil cylinder 8 is fully recovered, and the other parts are not moved to analyze the change of the second angle H during the change of the distance D; to help analyze the different distance D under the same other conditions. The impact on the second included angle H.

According to Figure 13, when the side shape of the second weight portion 202 remains unchanged, the closer its left edge is to the thirteenth hinge point 1013, the upper part of the second weight portion 202 deflects counterclockwise around the first hinge point 101 The larger the angle; this directly leads to the larger the second angle H. The situation of the first weight portion 201 is similar to that of the second weight portion 202, and will not be repeated. After experimentation, it is learned that:

When the ripper cylinder 9 is fully recovered, the distance D is 395 mm, and the second included angle H is 58°. From the lateral direction, on one side, a 1.14 square meter arm is located in the first chamber 301, one side The total area is 2.52 square meters.

When the distance D is 739 mm, the second angle H is 47°; when the distance D is 837 mm, the second angle H is 44°; when the distance D is 900 mm, the second angle H is 42° ; When the distance D is 1405 mm, the second included angle H is 21°.

The above data confirms that the smaller the distance D, the larger the second angle H.

In a way to maximize the second included angle H, in addition to setting a smaller distance D, the thickness of the first weight portion 201 and the second weight portion 202 in the lateral direction can also be increased; for example, through the first hinge The positional relationship between the point 101, the second hinge point 102, the third hinge point 103, the eighth hinge point 108, the ninth hinge point 109, and the tenth hinge point 1010 can also be set to increase the second angle H; for example, The stroke and length of the stick cylinder 8 and the ripper cylinder 9 can also affect the size of the second included angle H; under the same conditions as above, the smaller the distance D, the larger the second included angle H.

In order to be different from the prior art while maintaining a better use effect, it is better that the distance D is smaller than the second distance E.

The forearm 5 is located in the first chamber 301, which can make the thickness of the forearm 5 in the lateral direction smaller than that of the ripper 6, which is beneficial to make the weight of the ripper 6 greater than the weight of the forearm 5.

According to the above data, it can also be analyzed that when the forearm 5 and the boom 4 share less lateral space, as measured by the complete recovery of the stick cylinder 8, in the lateral direction, at least 25% of the side area of the forearm 5 is not shared with the boom 4 Share the space in the horizontal direction. In this case, the more the forearm 5 and the ripper 6 can share the space in the horizontal direction, the more conducive to making the second included angle H larger; when the ripper cylinder 9 is fully recovered , It is better that at least 25% of the forearm 5 can share the horizontal space with the ripper 6.

In another embodiment, the rock breaking device carried by a 50-ton excavator is the same as the excavator in the previous embodiment; it includes a boom 4, a forearm 5 and a ripper 6, and the ripper 6 includes The first weight portion 201 and the second weight portion 202, between the first weight portion 201 and the second weight portion 202 is the first chamber 301, the forearm 5 and the ripper cylinder 9 can be located in the first chamber; the forearm 5 The area of the two sides is 2.52 square meters respectively. When the stick cylinder 9 is fully recovered, the arm 5 has a single side of 1.7 square meters and the boom 4 shares space horizontally. The ripper 6 weighs 11 tons, and the arm 5 The weight is 3.5 tons, and the weight of boom 4 is 4.7 tons; the second distance E is 870 mm.

Here, the ripper cylinder 9 is expanded and contracted, the stick cylinder 8 is completely recovered, and the other parts are not moved to analyze the change of the second included angle H during the change of the distance D.

When the ripper oil cylinder 9 is fully recovered, the distance D is 395 mm, and the second included angle H is 58°. From the lateral direction, on one side, a 0.4 square meter arm is located in the first chamber 301, one side The total area is 2.52 square meters.

According to the above data analysis, the smaller the distance D, the larger the second included angle H; when the distance D is less than the second distance E, a larger second included angle H can be obtained.

Of course, in order to obtain a larger second included angle H, it is also possible to reduce the width of the first weight portion 201 and the second weight portion 202 in the front-to-rear direction or to make the eighth hinge point 108 more relative to the seventh hinge point 107. In addition to the above methods, in this embodiment, since the first weight portion 201 and the second weight portion 202 can share space with the forearm, the distance D can be made smaller than the distance E, and the distance D is smaller than the distance E relative to the distance D is greater than the distance E, and it is easier to obtain a relatively larger second angle H.

In this embodiment, when the forearm 5 and the forearm 4 have a larger shared space in the transverse direction, and the forearm 5 and the ripper 6 share less space in the transverse direction, a larger second angle can also be obtained. Angle H.

In yet another embodiment, it is a rock breaking device carried by an 80-ton excavator. The excavator is representative of this type of excavator; it includes the boom 4, the forearm 5 and the pine Earthenware 6, scarifier 6 includes a first weight part 201 and a second weight part 202, between the first weight part 201 and the second weight part 202 is a first chamber 301, the arm 5 and the scarifier cylinder 9 can be located in the first In a chamber; the area of the two sides of the forearm 5 is 3.1 square meters respectively. When the stick cylinder 9 is fully recovered, the single side of the forearm 5 has 0.8 square meters and the large arm 4 shares the space horizontally. The weight of the ripper 6 It is 21 tons, the weight of the forearm 5 is 4.5 tons, and the weight of the boom 4 is 5.7 tons; the second distance E is 1030 mm.

When the ripper cylinder 9 is fully recovered, the distance D is 495 mm, and the second included angle H is 58°. From the lateral direction, on one side, a 1.87 square meter arm is located in the first chamber 301.

In this embodiment, when the forearm 5 and the forearm 4 have a relatively large shared space in the lateral direction, and the forearm 5 and the ripper 6 share a larger space in the lateral direction, a larger angle second clamp can also be obtained. Angle H.

Based on the above three embodiments, according to the rock breaking device carried by a representative excavator, the distance D is preferably smaller than the second distance E.

The rock breaking device provided by the embodiment of the present disclosure includes a carrier 112. The carrier 112 in the figure is an excavator, but is not limited thereto. As shown in FIGS. 1 to 4, the carrier 112 includes an upper vehicle body 11, a lower vehicle body 12 and a traveling mechanism 10, the upper vehicle body 11 is rotatably connected to the lower vehicle body 12, and the traveling mechanism 10 is provided on the lower vehicle body 12.

For example, the vehicle 112 includes a power part, a control part, and a hydraulic part. The power part generates power. The hydraulic part converts the power generated by the power part into high-pressure oil to provide a power source for the motor and cylinder. The control part is used to control the actions of the motor and cylinder. .

As shown in Figures 1 to 4, the rock breaking device includes a boom 4, a forearm 5 and a ripper 6. One end of the boom 4 is connected to the carrier 112 (upper car body 11) through a seventh hinge point 107, and the boom The other end of 4 is hinged with the forearm 5 through the eighth hinge point 108, one end of the lifting cylinder 7 is hinged to the carrier 112 (upper body 11), and the other end of the lifting cylinder 7 is hinged with the boom 4 to the thirteenth At the hinge point 1013, the lifting cylinder 7 can telescopically drive the boom 4 to move up and down around the seventh hinge point 107. The boom 4 is provided with a stick cylinder 8, and one end of the stick cylinder 8 is hinged with the boom 4 through the ninth hinge point 109 , The other end of the stick cylinder 8 is hinged with the forearm 5 through the tenth hinge point 1010, the forearm 5 is hinged with the ripper 6 through the first hinge point 101, one end of the ripper cylinder 9 and the forearm 5 through the second hinge point 102 is hinged, and the other end of the ripper oil cylinder 9 is hinged with the ripper 6 through a third hinge point 103. The rock breaking device may also include a hydraulic oil pipeline arranged on it, and part of it is also provided with a lighting device.

For example, the weight of the ripper 6 is greater than the weight of the boom 4, and the weight of the ripper 6 is greater than the weight of the arm 5, so as to help reduce the energy loss of the ripper cylinder 9 and the arm cylinder 8. The reason is that the working medium hydraulic oil of the cylinder is compressible, and it is difficult to achieve rigid transmission, resulting in energy loss. The weight of the boom 4 and the forearm 5 is transmitted to the ripper 6 through the cylinder. The greater the weight, the greater the transmission amount. The greater the value, the greater the energy loss. Increasing the weight of the ripper 6 can effectively reduce its energy loss.

FIG. 7A is a cross-sectional view of the first weight portion and the connecting portion of the rock breaking device provided by an embodiment of the present disclosure; FIG. 7B is a cross-sectional view of the first weight portion, the connecting portion and the soil loosening portion of the rock breaking device provided by an embodiment of the present disclosure Sectional view; Figure 7C is a structural diagram of a rock breaking device provided by an embodiment of the present disclosure.

Regarding the arrangement of the first hinge point 101, refer to FIGS. 7A, 7B, and 7C. The oblique line filling part in FIGS. 7A and 7B is the loosening part 204, and the cross line filling part is the connecting part 203; except as shown in FIGS. 1 to 7 In addition to the shape shown in 6B, the first hinge point 101 includes two ear plates, and the two ear plates are arranged at the connecting portion 203; of course, the ear plates may also be arranged at a position above and behind the loosening portion 204.

Referring to Figure 7C, Figure 7C is a state of the rock breaking device during operation. In this state, the stick cylinder 8 extends, the ripper cylinder 9 extends, and the part of the ripper cylinder 9 away from the tenth hinge point 1010 is in the transverse direction. The upper part is located in the first chamber 301, so that the ripper cylinder 9 is not easily damaged; if the ripper cylinder 9 is not located in the first chamber 301, the part of the ripper cylinder 9 away from the tenth hinge point 1010 is likely to be affected by loose rock formations. Or other obstacles are in contact, causing damage to the piston rod or pipeline.

In the case of no conflict, different features in different embodiments of the present disclosure can be combined with each other. The same features in different embodiments of the present disclosure can be referred to each other.

The above are only specific implementations of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present disclosure. It should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

A rock breaking device, including:

The ripper includes a ripper part, a connecting part, a first weight part and a second weight part. The first weight part and the second weight part are arranged opposite to each other. The first weight part is connected to the second weight part;

The forearm is hinged with the ripper through a first hinge point; and

Ripper oil cylinder, one end of the ripper oil cylinder is hinged with the forearm through a second hinge point, and the other end of the ripper oil cylinder is hinged with the ripper through a third hinge point,

It is characterized in that a first chamber is provided between the first weight part and the second weight part, and at least a part of the ripper oil cylinder and at least a part of the forearm are located in the first chamber.
The rock breaking device according to claim 1, wherein at least a part of the ripper cylinder and at least a part of the forearm are arranged in the first chamber in a vertical direction or a longitudinal direction.
The rock breaking device according to claim 2, wherein when the ripper cylinder is fully recovered, the part of the forearm located in the first chamber is the part during recovery; when the ripper cylinder is fully extended, the forearm is located at the first chamber. The part of the chamber is the part at the time of extension; the area of the part side at the time of recovery is more than 5 times the area of the part side at the time of extension.
The rock breaking device according to claim 1, wherein the connecting portion is sandwiched between the first weight portion and the second weight portion, and the first cavity is located at the connecting portion. On the side away from the soil loosening part, the length of the first cavity in the vertical direction is greater than the thickness of the connecting part in the transverse direction.
The rock breaking device according to claim 1, wherein when the ripper oil cylinder is recovered to the shortest position, in the lateral direction, at least half of the ripper oil cylinder is located in the first chamber.
The rock breaking device according to claim 1, wherein the ripper has a rock breaking part, the rock breaking part is located at the end of the ripper away from the connecting part, and the ripper is located at the interface The weight and volume of the part far from the rock breaking part are respectively greater than the weight and volume of the part of the ripper located at the interface near the rock breaking part, and the interface is the hinge of the first hinge point The axis and the plane where the hinge axis of the third hinge point is located.
The rock breaking device according to claim 6, characterized in that the weight and volume of each of the first weight portion and the second weight portion are respectively larger than that of the ripper located near the interface. 50% of the weight and volume of the part of the broken rock part.
The rock breaking device according to claim 1, wherein when the ripper cylinder is recovered to the shortest position, more than half of the weight or volume of the forearm in the lateral direction is located in the first chamber .
The rock breaking device according to claim 1, further comprising a boom, one end of the boom is hinged with the upper body of the excavator at the seventh hinge point, the other end of the boom is hinged with the forearm at the eighth hinge point, and the stick One end of the cylinder is hinged with the boom at the ninth hinge point, the other end of the stick cylinder is hinged with the forearm at the tenth hinge point, one end of the lifting cylinder is hinged to the upper car body, and the other end of the lifting cylinder is hinged with the boom at the thirteenth point. The hinge point, when the stick cylinder and ripper cylinder are fully recovered;

The shortest distance between the first weight portion and the second weight portion and the thirteenth hinge point is the first distance, and the axial distance of the two lifting cylinders is the second distance; the first distance is smaller than the second distance.
The rock breaking device according to any one of claims 1-9, further comprising:

Vehicle; the vehicle is an excavator; the excavator includes an upper body and a lower body, and the upper body is rotatably connected to the lower body;

A big arm, one end of the big arm is connected to the upper vehicle body through a seventh hinge point, and the other end of the big arm is hinged to the small arm through an eighth hinge point;

A lifting cylinder, one end of the lifting cylinder is hinged to the carrier, the other end of the lifting cylinder is hinged to the boom, and the lifting cylinder can telescopically drive the boom around the seventh The hinge point moves up and down; and

An arm cylinder, one end of the arm cylinder is hinged with the boom through a ninth hinge point, and the other end of the arm cylinder is hinged with the arm through a tenth hinge point.
The rock breaking device according to claim 10, wherein the weight of the ripper is greater than the weight of the big arm, and the weight of the ripper is greater than the weight of the forearm.
The rock breaking device according to claim 1, wherein when the ripper oil cylinder is fully recovered, in the lateral direction, at least 25% of the length of the ripper oil cylinder is located in the first chamber.
The rock breaking device according to claim 1, wherein when the ripper oil cylinder is fully recovered, in the lateral direction, at least 25% of the side area of the forearm is located in the first chamber.
The rock breaking device according to claim 1, wherein the first weight portion and the second weight portion have a cavity, and a filler is arranged in the cavity.
The rock breaking device according to claim 1, wherein the first weight part is provided with a chamber A and a chamber B, a partition is provided between the chamber A and the chamber B without sharing a space, and the chamber B is sealed Filling is provided on the ground, and the chamber A is provided with an inlet and outlet, and the weight-adjusted filler can enter or exit the chamber A through the inlet and outlet.
The rock breaking device according to claim 21, wherein the chamber A can be located in front of the chamber B.