CN111236351A

CN111236351A - Rock breaking device

Info

Publication number: CN111236351A
Application number: CN202010164232.6A
Authority: CN
Inventors: 凌杰
Original assignee: Chengdu Lieshizhe Rock Breaking Technology Co ltd
Current assignee: Chengdu Lieshizhe Rock Breaking Technology Co ltd
Priority date: 2020-03-11
Filing date: 2020-03-11
Publication date: 2020-06-05
Also published as: WO2021180010A1

Abstract

A rock breaking device is provided. The rock breaking device comprises: the scarifier comprises a scarifier body, a small arm and a scarifier oil cylinder, wherein the scarifier body comprises a scarifier part, a connecting part, a first weight part and a second weight part, the first weight part and the second weight part are oppositely arranged, and the scarifier body is connected with the first weight part and the second weight part through the connecting part; the small arm is hinged with the scarifier through a first hinge point; one end of the ripper oil cylinder is hinged with the small arm through a second hinge point, and the other end of the ripper oil cylinder is hinged with the ripper through a third hinge point; a first cavity is arranged between the first weight part and the second weight part, and at least one part of the ripper cylinder and at least one part of the small arm are located in the first cavity, so that protection of the ripper cylinder and sharing of the space of the ripper cylinder and the small arm in the transverse direction are achieved.

Description

Rock breaking device

Technical Field

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

Background

In rock breaking work aiming at rock formations with not particularly high hardness, a rock breaking device with a scarifier mounted on an excavator is widely adopted due to flexibility and high efficiency, and the rock breaking device generally comprises a large arm, a small arm and the scarifier, and the large arm, the small arm and the scarifier are driven by an oil cylinder so that a rock breaking part of the scarifier is in contact with the rock formations to break rocks. Of course, some rock breaking devices may not be provided with a small arm.

Disclosure of Invention

At least one embodiment of the present disclosure provides a rock breaking device, including: the scarifier comprises a scarifier body, a connecting part, a first weight part and a second weight part, wherein the scarifier body comprises a scarifier body, the first weight part and the second weight part are arranged oppositely, and the scarifier body is connected with the first weight part and the second weight part through the connecting part; the small arm is hinged with the scarifier through a first hinge point; and the scarifier oil cylinder, the one end of the scarifier oil cylinder with the forearm is hinged through a second hinge point, the other end of the scarifier oil cylinder is hinged through a third hinge point, wherein a first cavity is arranged between the first weight part and the second weight part, and at least one part of the scarifier oil cylinder and at least one part of the forearm are positioned in the first cavity.

For example, according to the rock breaking device provided by some embodiments of the present disclosure, at least a portion of the ripper cylinder and at least a portion of the small arm are arranged in a vertical direction or a longitudinal direction within the first chamber.

For example, according to the rock breaking device provided by some embodiments of the present disclosure, the connecting portion is interposed between the first weight portion and the second weight portion, the first cavity is located on a side of the connecting portion away from the soil loosening portion, and a length of the first cavity in a vertical direction is greater than a thickness of the connecting portion in a lateral direction.

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

For example, according to some embodiments of the present disclosure, there is provided a rock breaking device, wherein the ripper has a rock breaking portion located at an end of the ripper away from the connection portion, a weight and a volume of a portion of the ripper located away from the rock breaking portion at an interface, which is a plane where a hinge shaft of the first hinge point and a hinge shaft of the third hinge point are located, are respectively greater than a weight and a volume of a portion of the ripper located close to the rock breaking portion at the interface.

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

For example, according to the rock breaking device provided by some embodiments of the disclosure, in the case that the ripper cylinder is retracted to the shortest position, the weight or volume of the small arm in the lateral direction is more than half of that of the first chamber.

For example, according to the rock breaking device provided by some embodiments of the present disclosure, the ripper is provided with a counterweight support, one end of the counterweight support is hinged to the first weight portion and the second weight portion through a fourth hinge point or hinged to the small arm, the counterweight support can move around the fourth hinge point, the other end of the counterweight support is integrally or detachably provided with a first counterweight, the ripper is provided with a limiting device, the limiting device limits a rotation angle of the counterweight support, and the counterweight support can transmit gravity to the rock breaking portion of the ripping portion through contact with the limiting device.

For example, according to the rock breaking device provided by some embodiments of the present disclosure, the counterweight support includes a first support and a second support, one end of the first support is hinged to the first weight portion and the second weight portion or hinged to the fourth hinge point with the small arm, the other end of the first support is hinged to the fifth hinge point with the second support, the first support and the second support are respectively provided with a support fixing portion, the first support and the second support are detachably and fixedly connected through the support fixing portion, and the other end of the second support is provided with the first counterweight.

For example, according to some embodiments of the present disclosure, there is provided a rock breaking device, wherein the counterweight housing is hinged to the first weight and the second weight, each of the first weight and the second weight is provided with a second chamber, and a portion of the counterweight housing is located within the second chambers of the first weight and the second weight.

For example, according to some embodiments of the present disclosure, a rock breaking device is provided, which includes a first position-limiting portion and a second position-limiting portion, the second chamber has an opening, and the first position-limiting portion and the second position-limiting portion are two opposite portions of the first weight portion and/or the second weight portion, respectively, forming the opening.

For example, according to a rock breaking device provided by some embodiments of the present disclosure, the first counterweight is circular, and the first counterweight is hinged to the counterweight support through a sixth hinge point.

For example, a rock breaking device is provided according to some embodiments of the present disclosure, each of the first weight and the second weight having a second chamber, each of the first weight and the second weight removably having a second weight, at least a portion of the second weight being located within the second chamber.

For example, according to some embodiments of the present disclosure, there is provided a rock breaking device, further including: a carrier; one end of the big arm is connected with the carrier through a seventh hinge point, and the other end of the big arm is hinged with the small arm through an eighth hinge point; one end of the lifting oil cylinder is hinged to the carrier, the other end of the lifting oil cylinder is hinged to the large arm, and the lifting oil cylinder can stretch and drive the large arm to move up and down around the seventh hinged point; and one end of the bucket rod oil cylinder is hinged with the big arm through a ninth hinge point, and the other end of the bucket rod oil cylinder is hinged with the small arm 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 large arm, and the weight of the ripper is greater than the weight of the small arm.

At least some embodiments of the present disclosure also provide a rock breaking device, comprising: a ripper; the small arm is hinged with the scarifier through a first hinge point; one end of the ripper oil cylinder is hinged with the small arm through a second hinge point, and the other end of the ripper oil cylinder is hinged with the ripper through a third hinge point; and one end of the counterweight support is hinged with the scarifier or the small arm through a fourth hinge point, the counterweight support can move around the fourth hinge point, and the other end of the counterweight support is integrally or detachably provided with a first counterweight.

For example, according to the rock breaking device provided by some embodiments of the present disclosure, the counterweight support is rotatably connected to the small arm through a counterweight support, one end of the counterweight support is hinged to the counterweight support at an eleventh hinge point, and the other end of the counterweight support is hinged to the small arm at a twelfth hinge point.

For example, according to the rock breaking device provided by some embodiments of the present disclosure, the counterweight support includes a support cylinder, a piston, and a piston rod, the support cylinder is provided with a hinge hole and a chamber, the piston rod is provided with a hinge hole, the piston is integrally or detachably connected with the piston rod, and the piston is in fit contact with and in sliding fit with the chamber to discharge air in the chamber out of the chamber or suck air out of the chamber into the chamber.

For example, according to the rock breaking device provided by some embodiments of the present disclosure, a breathing port is provided at a bottom of the support cylinder, and the chamber of the support cylinder is communicated with the breathing port.

For example, according to the rock breaking device that some embodiments of this disclosure provide, the rock breaking device still includes the carrier, the carrier includes the excavator, the excavator has last automobile body, lower automobile body and running gear, go up automobile body swivelling joint in lower automobile body, running gear set up in lower automobile body.

Drawings

To more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below, and it is apparent that the drawings in the following description relate only to some embodiments of the present disclosure and are not limiting to the present disclosure.

Fig. 1 is a schematic diagram of a rock breaking device provided in an embodiment of the present disclosure (a side view with a stick cylinder and ripper cylinder partially extended);

fig. 2 is a front view of a rock breaking device provided in an embodiment of the present disclosure;

fig. 3 is a schematic diagram of a rock breaking device (a side view of the boom cylinder and ripper cylinder when fully retracted) according to an embodiment of the present disclosure;

fig. 4 is a schematic diagram of a rock breaking device provided in an embodiment of the present disclosure (a side view with the arm cylinder fully retracted and the ripper cylinder fully extended);

fig. 5 is a structural diagram of a ripper in a rock breaking device according to an embodiment of the present disclosure;

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

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

fig. 7A is a cross-sectional view of a first weight portion and a connecting portion of a rock breaking device according to an embodiment of the present disclosure;

fig. 7B is a cross-sectional view of a first weight portion, a connection portion, and a ripping portion of a rock breaking device according to an embodiment of the present disclosure;

fig. 7C is a block diagram of a rock breaking device provided in an embodiment of the present disclosure;

fig. 8 is a transportation state diagram of a rock breaking device having a first bracket and a second bracket according to an embodiment of the present disclosure;

fig. 9 is a schematic view of the first support contacting the first position-limiting portion in an operating state of the rock breaking device with the first support and the second support according to an embodiment of the disclosure;

fig. 10 is a schematic view illustrating the counterweight bracket contacting the second limiting portion in an operating state of the rock breaking device with the counterweight bracket according to an embodiment of the present disclosure;

fig. 11 is a schematic side view illustrating a connection between a second counterweight and a ripper in a rock breaking device according to an embodiment of the present disclosure;

fig. 12 is a schematic view of another perspective view of the connection between the second counterweight and the ripper in the rock breaking device according to an embodiment of the disclosure;

fig. 13 is a structural diagram of a ripper in a rock breaking device provided in an embodiment of the present disclosure, in which a first weight portion and a second weight portion each have a second chamber;

fig. 14 is a schematic view of a rock breaking device according to an embodiment of the present disclosure (a schematic view of a counterweight support with a piston rod extended when the counterweight support is connected to the forearm);

fig. 15 is a schematic view of a rock breaking device according to an embodiment of the present disclosure (a schematic view of a counterweight support in a state where a piston rod of the counterweight support is retracted when the counterweight support is connected to the forearm); and

fig. 16 is a structural diagram of a counterweight support in a rock breaking device according to an embodiment of the present disclosure.

Reference numerals: 201-a first weight; 202-second weight; 203-a connecting portion; 4-big arm; 5-small arm; 6-a scarifier; 7-lifting the oil cylinder; 8-bucket rod oil cylinder; 10-a traveling mechanism; 112-a carrier; 11-upper vehicle body; 12-lower vehicle body; 14-interface; 204-a soil loosening part; 15-a rock breaking part; 16-middle division; 17-a counterweight support; 1701-first support; 1702-a second scaffold; 18-a first counterweight; 19-a second counterweight; 21-a first limiting part; 22-a second stop; 301-a first chamber; 302-a second chamber; 24-a counterweight support; 2401-a support cylinder; 2402-a piston rod; 2403-a piston; 2404-supporting the cartridge cover; 2405-a breathing orifice; 101-a first hinge point; 102-a second hinge point; 103-a third hinge point; 104-a fourth hinge point; 105-a fifth hinge point; 106-sixth hinge point; 107-seventh hinge point; 108-eighth hinge point; 109-ninth hinge point; 1010-tenth hinge point; 1011-eleventh hinge point; 1012-twelfth hinge point; 1013-a thirteenth hinge point; a-included angle; 205-ear plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Likewise, the word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items.

For convenience of description, in some drawings, "up", "down", "front", and "rear" are given, in the embodiments of the present disclosure, a vertical direction is a direction from top to bottom, a vertical direction is a gravity direction, and a horizontal direction is a direction perpendicular to the vertical direction. For example, the vertical direction in fig. 1 is the top-to-bottom direction. For example, the upper body of the excavator is rotated in a direction transverse to the lower body. For another example, the lateral direction is a direction perpendicular to the opposite sides of the first weight portion and the second weight portion, but is not limited thereto. The lateral direction defined by a direction perpendicular to the opposite side surfaces of the first weight portion and the second weight portion is coincident with a turning direction of the upper body with respect to the lower body of the excavator. For example, the lateral 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 a direction from left to right or from right to left.

In general, a hinge point refers to a position where two or more components are connected, and generally includes a hinge hole, a contact surface (mating surface), a hinge shaft, etc. required when the components are connected, and the hinge hole of at least one component rotates with respect to the hinge shaft. For example, the components are connected by a hinge axis, and the components can rotate around the hinge axis.

For the rock breaking device, the performance of the rock breaking device can be greatly improved by optimizing the lever ratio and weight distribution of the large arm, the small arm and the scarifier.

In some rock breaking devices, through the optimization of the lever ratio of the connecting points of the large arm and the small arm and the increase of the weight of the scarifier, particularly the optimization of the structure of the scarifier, the weight and the volume of the part of the scarifier positioned at the upper part are relatively larger, so that functional components such as a shock excitation device, a balance weight and the like are easily arranged on the scarifier, and a larger arrangement space of the scarifier oil cylinder can be obtained.

In some rock breaking devices, the center of gravity of the rock breaking device can be adjusted by arranging a sliding counterweight on a large arm, but the weight of a ripper of the rock breaking device is limited, and energy loss is large.

Since the ripper has a large weight and a large volume, it is easy to cause the position of the ripper to be a large distance from a vehicle such as an excavator, and cause the lifting load of the lifting cylinder to be large and the lifting to be slow under the condition that the total weight of the rock breaking device is equal, thereby affecting the rock breaking efficiency, and if the longitudinal width of the forearm is sacrificed, the structural strength of the forearm in the longitudinal direction is easily affected to a large extent.

Although the weight of the ripper can be increased or a counterweight can be arranged on the ripper, the rock breaking capacity is greatly limited due to the limited total weight of the rock breaking device.

In addition, because the working conditions are severe, ripper cylinders in some rock breaking devices are easily touched by rock strata or other obstacles to be injured.

The embodiment of the disclosure enables one part or all of the ripper oil cylinder to be located in the first cavity by arranging the first cavity in the ripper, so that the ripper oil cylinder is not easy to damage, and enables the ripper and the small arms to share the space in the transverse direction under the condition that the minimum part of the small arms is also located in the first cavity of the ripper, thereby being beneficial to position distribution of the small arms and the ripper in the longitudinal direction.

The rock breaking device provided by the embodiment of the disclosure includes an excavator as an example for illustration, but is not limited thereto.

First, a rock breaking device provided in an embodiment of the present disclosure is described with reference to fig. 1 to 6B.

Fig. 1 to 4 are schematic views of a rock breaking device according to an embodiment of the present disclosure. FIG. 1 is a side view of a boom cylinder and ripper cylinder partially extended, and FIG. 2 is a front view of a rock breaking apparatus; FIG. 3 is a side view of the arm cylinder and ripper cylinder fully retracted, and FIG. 4 is a side view of the arm cylinder fully retracted and ripper cylinder fully extended. Fig. 5 is a structural diagram of a ripper in a rock breaking device according to an embodiment of the present disclosure; fig. 6A is a side view of a ripper in a rock breaking device provided in an embodiment of the present disclosure; fig. 6B is a side view of a forearm in a rock breaking device provided in an embodiment of the disclosure.

As shown in fig. 1 to 4, an embodiment of the present disclosure provides a rock breaking device, including: ripper 6, forearm 5 and ripper cylinder 9.

As shown in fig. 1 to 5, ripper 6 includes ripping portion 204, connection portion 203 (as shown in fig. 5, connection portion 203 is not shown in fig. 1 to 4), first weight portion 201, and second weight portion 202. As shown in fig. 2 to 5, the first weight portion 201 and the second weight portion 202 are disposed opposite to each other. As shown in fig. 5, soil loosening portion 204 is connected to first weight portion 201 and second weight portion 202 via connecting portion 203, and first cavity 301 is provided between first weight portion 201 and second weight portion 202.

As shown in fig. 1 to 6B, the small arm 5 is hinged to the ripper 6 through a first hinge point 101. As shown in fig. 1 to 6B, the small arm 5 is hinged to the first weight portion 201 and the second weight portion 202 through the first hinge point 101. As shown in fig. 2 to 6B, one end of the ripper cylinder 9 is hinged to the small arm 5 through a second hinge point 102, and the other end of the ripper cylinder 9 is hinged to the ripper 6 through a third hinge point 103. As shown in fig. 2 to 6B, the other end of the ripper cylinder 9 is hinged to the first weight portion 201 and the second weight portion 202 via a third hinge point 103. As shown in fig. 1-4, at least a portion of ripper cylinder 9 and at least a portion of forearm 5 are located within first chamber 301.

For example, the third hinge point 103 may be provided as an ear plate (not shown) like the illustrated first hinge point 101 to reduce the thickness and the length of the connecting shaft.

Regarding the arrangement of the third hinge point 103 (not shown in the drawings), in addition to the shape as shown in fig. 1 to 6B, the third hinge point 103 includes two ear plates, which are arranged at the connecting portion 203; of course, the ear plate may be provided above the scarification portion 204 at a position closer to the front.

According to the rock breaking device provided by the embodiment of the disclosure, the first cavity 301 is formed by the first weight part 201 and the second weight part 202, at least one part of the ripper cylinder 9 can be located in the first cavity 301, or at least one part of the small arm 5 is located in the first cavity 301, or at least one part of the ripper cylinder 9 and at least one part of the small arm 5 are both located in the first cavity 301, so that the protection of the ripper cylinder 9 and the sharing of the space of the first cavity 301 in the transverse direction of the ripper cylinder 9 and the small arm 5 are realized.

It should be noted that, in the embodiment of the present disclosure, the ripper cylinder 9 is located in the first cavity 301, and the structural features and effects of the ripper cylinder are different from those of a rock breaking device in a general technology, where the ripper cylinder is located between two oppositely-arranged ear plates of a ripper, and in the general technology, the weight and the volume of the ear plates of the ripper are relatively small, and only the ripper cylinder and the ripper can be connected.

For example, the interface 14 (refer to fig. 6A) is a plane in which the hinge axis of the first hinge point 101 and the hinge axis of the third hinge point 103 are located. The rock breaking portion 15 is located at an end of the ripping portion 204. Broken rock portion 15 is located at one end of ripped portion 204 remote from connection portion 203.

For example, the end of the ripper part 204 distant 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 tooth so as to be easily replaced after abrasion, which is a common manner in the art, the tooth is cut in contact with the rock formation at the time of rock breaking, the ripper part 204 enters the loosened rock formation along with the rock breaking part 15, the first weight part 201 and the second weight part 202 do not enter, and normally, the length of the ripper part 204 determines the depth at which rock can be broken, the length of the ripper part 204 should be set in a comprehensive manner according to the hardness of the rock formation and the working efficiency, and the longer the length of the ripper part 204, the smaller the excavation force of the rock breaking part 15 and vice versa under the same conditions. In general, when the formation hardness is relatively small, the length of the soil loosening portion may be set relatively large, which is more advantageous for improving the working efficiency, and if the formation hardness is relatively large, the length of the soil loosening portion 204 is set relatively small.

The soil loosening part 204 and the connecting part 203 can be integrally arranged, for example, the soil loosening part 204 is integrally machined by using a steel material, and the soil loosening part 204 is stressed greatly, so that the steel material with higher strength is used; the scarification part 204 and the connecting part 203 can also be manufactured by welding, and the first weight part 201 and the second weight part are manufactured separately and then can be connected with the connecting part 203 by welding, so that the scarifier 6 has better structural strength and integrity, and the weight of the first weight part 201 and the weight of the second weight part 202 can be transmitted to the rock breaking part 15 during rock breaking.

Although the first weight portion 201 and the second weight portion 202 may be detachably connected to the connection portion 203 by bolts, pins, or the like, the ripper 6 of the detachable connection method has relatively lower structural strength than the connection method of welding, and is relatively disadvantageous in that the first weight portion 201 and the second weight portion 202 transmit the gravity to the rock breaking portion 15.

The first weight portion 201 and the second weight portion 202, the connecting portion 203 and the scarification portion 204 can also be formed by processing one steel material, and the method is generally high in manufacturing cost but good in using effect; the alloy can also be formed by casting once, and the using effect is better.

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

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

As for the arrangement of the first chamber 301, referring to fig. 3, 4 and 5, it is understood by analysis that a connection part (not shown) may be provided between the first weight part 201 and the second weight part 202 in the upper part of the first chamber 301, for example, above the first weight part 201 and the second weight part 202, to increase the structural strength, that is, the first chamber 301 does not penetrate the ripper 6 in the vertical direction. The first weight portion 201 and the second weight portion 202 do not contact the arm 5 and the ripper cylinder 9 during operation. When the upward lengths of the first weight portion 201 and the second weight portion 202 are short, the widths of the first weight portion 201 and the second weight portion 202 in the lateral direction are wide, and the first weight portion 201 and the second weight portion 202 also have large weights, in this case, the ripper cylinder 9 may not be located in the first chamber 301 in the lateral direction, and in order to prevent the widths of the first weight portion 201 and the second weight portion 202 from being too wide, when the arm cylinder 8 is completely retracted, at least a part of the small arm 5 is located in the first chamber 301, and the lateral space may also be fully utilized, so as to facilitate the setting of the center of gravity of the rock breaking device. Similarly, when the arm cylinder 8 is completely retracted and the arm 5 is not located in the first chamber 301, in order to prevent the first weight 201 and the second weight 202 from being too wide in the lateral direction, the upward length of the first weight 201 and the second weight 202 is long, the first weight 201 and the second weight 202 can also be made to have a large weight, and the lateral space can also be fully utilized to facilitate the arrangement of the center of gravity of the rock breaking device; when the ripper cylinder is fully retracted, ripper cylinder 9 is located within first chamber 301. Of course, the effect is better if the ripper cylinder 9 is fully retracted, with most of the ripper cylinder 9 and a portion of the small arm 5 being located in the first chamber at the same time.

In addition, the ripper cylinder 9 is located in the first chamber 301, so that the ripper cylinder 9 is not easy to touch with an obstacle to damage a piston rod or a pipeline. The arrangement of the structure enables the ripper cylinder to be not easily damaged under the condition that the weight of the ripper is large, or enables the ripper and the small arm to share the space in the transverse direction.

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

In some embodiments, more than half of the ripper cylinder 9 is located in the first chamber 301 in the lateral direction, so that a better protection effect of the ripper cylinder 9 is obtained. Such a structural arrangement makes it possible to make ripper cylinder 9 less susceptible to damage even when ripper 6 is heavy or to make ripper 6 and forearm 5 share a space in the lateral direction.

For example, as shown in fig. 1 to 4, at least a portion of ripper cylinder 9 and at least a portion of forearm 5 are located within first chamber 301, and at least a portion of ripper cylinder 9 and at least a portion of forearm 5 are arranged in a vertical or longitudinal direction within first chamber 301. Thus, the first chamber 301 can be fully utilized, and the ripper cylinder 9 and the small arm 5 are respectively disposed at different portions within the first chamber 301, share the first chamber, and do not interfere with each other. For example, at least a portion of ripper cylinder 9 and at least a portion of forearm 5 being vertically or longitudinally aligned within first chamber 301 may mean that, in a use state, at least a portion of ripper cylinder 9 and at least a portion of forearm 5 being vertically or longitudinally aligned within first chamber 301.

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

For example, in a front view, the length of the first cavity 301 in the vertical direction is greater than the length (thickness) of the connecting portion 203 in the lateral direction, so that when the first weight portion 201 and the second weight portion 202 have a large weight, the width of the joint of the soil loosening portion 204 and the first weight portion 201 and the second weight portion 202 is not too large, which is more beneficial for rock breaking operation, because the position is located above the soil loosening portion 204, when the soil loosening portion 204 completely enters the rock formation, the volume of the broken rock formation increases, the upper part of the rock formation is loose rock, and when part of the loose rock is located above the soil loosening portion 204, it is beneficial for obtaining a larger rock breaking depth, the cylinder and other parts are not damaged, and if the width of the connecting portion 203 is too large, blocking with the loose rock is easily generated.

Since the shape of the first chamber 301 may be irregular, the length of the first chamber 301 in the up-down direction is determined by the longest point.

In fact, when the weight part cannot enter the rock stratum during operation, and the loose part 204 completely enters the rock stratum, partial loose rock can be positioned at a part of the position above the loose part 204, which is beneficial to the rock breaking depth and efficiency; for this reason, the position lateral width cannot be too large, and a relatively large position width (not shown in the drawings) above the weight portion where the touch is not likely to occur can be set, resulting in a weight portion having a large weight. Regarding the longitudinal length of the connecting portion 203, which 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 larger, the longitudinal length of the connecting portion 203 can be set relatively larger, which is beneficial to obtain better structural strength of the connection.

The first weight 201 and the second weight 202 are respectively located at both sides of the first chamber 301, and the first weight 201 and the second weight 202 are used to increase the weight of the ripper 6, and have relatively large weight and volume. Two weight portions are typically provided, although other numbers of weight portions may be provided. Such as providing 3, 4, 6 weight portions, etc. In the case where 3 weight portions are provided, two first chambers 301 can be provided, two ripper cylinders may be provided, one ripper cylinder may be provided for each first chamber 301, and so on, but is not limited thereto. Embodiments of the present disclosure provide for the provision of two weight portions: the first weight portion 201 and the second weight portion 202 are explained as an example.

For example, as shown in fig. 4 and 5, first cavity 301 penetrates ripper 6 in the longitudinal direction or upward at a middle position of ripper 6 away from ripping portion 204, ripping portion 204 connects first weight portion 201 and first weight portion 202 via connection portion 203, and connection portion 203 is located near interface 14. Interface 14 as shown in fig. 6A, ripper 6 breaks rock by contacting rock breaking portion 15 with the rock formation.

As shown in fig. 6A, the dividing plane 14 is a plane on which the hinge axis of the first hinge point 101 and the hinge axis of the third hinge point 103 lie. For example, referring to fig. 1, 2, and 6A, the weight and volume of portion 61 of ripper 6 located away from rock breaking portion 15 at interface 14 are greater than the weight and volume, respectively, of portion 62 of ripper 6 located near rock breaking portion 15 at interface 14, whereby ripper portion 204 has a smaller volume to facilitate entry into the rock while facilitating a greater weight of ripper 6. As shown in fig. 6A, ripper 6 is divided into two portions according to interface 14, that is, into a portion 61 and a portion 62, which are located on both sides of interface 14, respectively. Portion 61 may be referred to as a first portion and portion 62 may be referred to as a second portion.

For further example, the weight and the volume of each of the first weight portion 201 and the second weight portion 202 are respectively greater than 50% of the weight and the volume of the portion, close to the rock breaking portion 15, of the ripper 6, which is located at the interface 14, and therefore the ripper portion 204 of the ripper can obtain a larger weight with a reasonable length, energy transmission of the ripper cylinder can be reduced, energy loss can be reduced, and the rigid transmission capability of the gravity of the rock breaking device to the rock breaking portion 15 can be improved.

For example, the interface 14 is a plane formed in a lateral direction by the axial centers of the first hinge point 101 and the third hinge point 103, and is a virtual plane for describing the structure of the ripper 6. Alternatively, the dividing plane 14 is the plane in which the hinge axis of the first hinge point 101 and the hinge axis of the third hinge point 103 are located.

Since the positions between the ripper 6, the ripper cylinder 9, and the arm 5 are the smallest in the volume space that it makes up when the ripper cylinder 9 is fully retracted, the embodiments of the present disclosure are described with the state when the ripper cylinder 9 is fully retracted (the ripper cylinder 9 is retracted to the shortest position).

For example, in some embodiments, to better protect ripper cylinder 9, at least half of ripper cylinder 9 is located within first chamber 301 with ripper cylinder 9 retracted to the shortest position. Alternatively, in the case where ripper cylinder 9 is retracted to the shortest position, at least half of the length of ripper cylinder 9 is located within first chamber 301.

For example, in some embodiments, in the case that the ripper cylinder 9 is retracted to the shortest position, at least half of the arm 5 is located in the first chamber 301, for example, at least half of the arm 5 is located in the first chamber 301, which may mean that at least half of the area (e.g., the area of the side) of the arm 5 is located in the first chamber 301, or at least half of the volume of the arm 5 is located in the first chamber 301, so the center of gravity setting of the rock breaking device may be facilitated because, when the rock breaking device includes an excavator, the lifting cylinder used when the excavator carries the excavating arm is generally used, since the lifting capacity and the stroke setting of the original lifting arm are relatively reasonable, and waste is also avoided, the hinge point (thirteenth hinge point 1013) of the lifting cylinder 7 and the boom 4 is generally forward, which easily causes the center of gravity of the rock breaking device to be too forward, as can be found by analyzing according to the lever principle, therefore, the lifting of the lifting oil cylinder 7 is not facilitated, the rock breaking part 15 is also not facilitated to obtain larger undercutting capacity by fully utilizing the gravity of the excavator through the rock breaking device, although the position which the rock breaking part 15 can reach is farther away from the excavator, and the operation range is larger, the rock breaking device is limited by the structure, the rock entering angle of the soil loosening part 204 during rock breaking has larger influence on rock breaking, the reasonable rock entering angle is more beneficial to the cutting-in of the rock breaking part 15, the range which can be reached by the soil loosening part 204 and has a better rock entering angle is a common operation range during the operation of the rock breaking part 15, and the common operation range of the rock breaking part 15 is limited.

For example, the range that the rock breaking portion 15 can reach and the normal operation range include a range that the rock breaking portion 15 can reach in the longitudinal width and a range that the excavator can reach in the lateral direction when rotating, and the excavator can rotate 360 ° in the lateral direction, so the longitudinal width will be described below.

For example, the vertical width of the normal working range of the ripper portion 204 is smaller than the vertical width of the range that the rock breaking portion 15 can reach, and the rock penetrating angle of the ripper portion 204 is not favorable for the rock breaking portion 15 to cut into the rock layer in the vertical direction in some of the range that the rock breaking portion 15 can reach, and therefore, the vertical width is not a downward cutting point in actual work. For example, the vertical width of the range that the rock breaking portion 15 can reach is 3000 mm, and the vertical width of the normal operation range of the loosening portion 204 is 2000 mm.

For example, if the excavator is in the state shown in fig. 1 (the normal operation range of the scarifier 204 and the range that the rock breaking part 15 can reach are not shown in the figure), the vertical width of the normal operation range is 400 mm away from the travel distance, the vertical width of the normal operation range is 2000 mm, the travel mechanism 10 does not affect the normal operation of the rock breaking device, and is ideally arranged at a distance, and if the small arm 5 and the scarifier 6 do not have a common space in the horizontal direction, in the case of ensuring that the longitudinal width of the normal working range is 2000 mm, the longitudinal width of the normal working range is usually more than 1000 mm from the running gear 10 (longitudinal width), thereby causing waste of distance, easily causing the gravity center of the rock breaking device to be too large from the gravity center of the excavator, if the positions of the small arm 5 and the scarifier 6 are partially or completely arranged in the transverse direction to share the space, the rock breaking device is beneficial to avoiding that the center of gravity of the rock breaking device is too far away from the center of gravity of the excavator.

Of course, if the lifting cylinder of the original excavator is not used and replaced, the distance from the seventh hinge point 107 to the thirteenth hinge point 1013 is reduced, and a reasonable distance from the common rock breaking range to the excavator can be obtained under the condition that the small arm 5 and the ripper 6 do not share the transverse space, but unnecessary waste is caused.

As shown in fig. 3 and 6B, when ripper cylinder 9 is retracted to the shortest position, more than half of the weight or volume of forearm 5 in the lateral direction is located in first chamber 301, and in order to describe the amount of forearm 5 located in first chamber 301 of ripper 6, it is divided by the weight or volume of forearm 5. Of course, other divisions may be employed.

As shown in fig. 3 and 6B, when ripper cylinder 9 is retracted to the shortest position, a portion 51 of arm 5 located at bisector 16 in the lateral direction toward ripper 6 can be located within first chamber 301, and to describe the amount of arm 5 located within first chamber 301 of ripper 6, bisector 16 means that the area of the side surface of arm 5 is divided into two portions, the areas of the two portions are equal, and bisector 16 passes through first hinge point 101. That is, the bisector of the arm 5 is a line of the arm 5 passing through the first hinge point 101 and equally dividing the area of the side surface of the arm 5 into two equal parts. Of course, the specific position of the middle dividing line 16 is flexible, and the first hinge point 101 is not needed, as long as the small arm 5 can be divided into two equal parts from the transverse direction, and the dividing mode is determined according to the structural arrangement of the small arm 5 and the ripper 6. In fig. 6B, the center line 16 is illustrated as a straight line, but in another embodiment, the center line 16 may not be a straight line. For example, the median line 16 may be a curved line or a polygonal line. When the ripper cylinder 9 is retracted to the shortest position in terms of area, the portion 51 of the lateral small arm 5 located at the median line 16 toward the ripper 6 can be located in the first chamber 301, which corresponds to the weight or volume of more than half of the lateral small arm 5 located in the first chamber 301 when the ripper cylinder 9 is retracted to the shortest position. The arm 5, the first weight portion 201, or the second weight portion 201 may have a regular shape or an irregular shape, and the shape of the arm 5, the first weight portion 201, and the second weight portion 201 is not limited in the embodiments of the present disclosure.

The larger longitudinal width of the small arm 5 is beneficial to improving the strength of the small arm 5, and under the condition that the small arm 5 has the relatively larger longitudinal width, the more the part of the small arm 5 located in the first cavity 301 is, the more the small arm 5 and the ripper 6 share the space, the smaller the angle beneficial to the included angle a (shown in fig. 6A) is, the smaller the angle of the included angle a is, and the less the ripper 6 is likely to touch with an obstacle during rock breaking. As shown in fig. 6A, the included angle a is an included angle between a side of the ripper 6 away from the first hinge point 101, among two sides close to the third hinge point 103, and a plane (interface 14) where a hinge shaft of the first hinge point 101 and a hinge shaft of the third hinge point 103 are located. That is, angle a is an angle between the side of ripper 6 located above ripping portion 204 and facing forward and the plane (interface 14) where the hinge shaft of first hinge point 101 and the hinge shaft of third hinge point 103 are located. The scarifier 6 and the small arm 5 share a transverse space, and an included angle A with a smaller angle is obtained.

For example, as shown in fig. 3 and 6B, in some embodiments, with ripper cylinder 9 retracted to the shortest position, the portion of minor arm 5 located at the midline toward ripper 6 can be located within first chamber 301.

In the rock breaking device provided by the embodiment of the disclosure, the structure of the ripper 6 and the small arm 5 or the ripper cylinder 9 can share a horizontal space, which is beneficial to the arrangement of the center of gravity of the rock breaking device, and the arrangement of the first weight part 201, the second weight part 202 and the first cavity 301 is beneficial to protecting the ripper cylinder 9, and simultaneously, the ripper 6 has relatively large weight and is also beneficial to obtaining a reasonable common operation range.

The rock breaking device provided by the embodiment of the present disclosure includes a carrier 112, and the carrier 112 is an excavator in the drawing, but is not limited thereto. As shown in fig. 1 to 4, the vehicle 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 in the lower vehicle body 12.

For example, the vehicle 112 includes a power section that generates power, a control section that converts the power generated by the power section into high-pressure oil to power the motor and the cylinders, and a hydraulic section that controls the operation of the motor and the cylinders.

As shown in fig. 1 to 4, the rock breaking device includes a big arm 4, a small arm 5 and a ripper 6, one end of the big arm 4 is connected to a carrier 112 (upper vehicle body 11) through a seventh hinge point 107, the other end of the big arm 4 is hinged to the small arm 5 through an eighth hinge point 108, one end of a lift cylinder 7 is hinged to the carrier 112 (upper vehicle body 11), the other end of the lift cylinder 7 is hinged to a thirteenth hinge point 1013 with the big arm 4, the lift cylinder 7 can stretch and drive the big arm 4 to move up and down around the seventh hinge point 107, the big arm 4 is provided with a dipper cylinder 8, one end of the dipper cylinder 8 is hinged to the big arm 4 through a ninth hinge point 109, the other end of the dipper cylinder 8 is hinged to the small arm 5 through a tenth hinge point 1010, the small arm 5 is hinged to the ripper 6 through a first hinge point 101, one end of the ripper cylinder 9 is hinged to the small arm 5 through a second hinge point 102, and the other end of the ripper cylinder 9 is hinged to the, the rock breaking device can also comprise a hydraulic oil pipeline arranged on the rock breaking device, and part of the rock breaking device is also provided with a lighting device.

For example, the weight of ripper 6 is greater than that of large arm 4, and the weight of ripper 6 is greater than that of small arm 5, to facilitate reduction of energy loss of ripper cylinder 9 and arm cylinder 8. The reason is that the working medium hydraulic oil of the oil cylinder has compressibility, and is difficult to realize rigid transmission, so that energy loss is caused, the weight of the large arm 4 and the small arm 5 is transmitted to the scarifier 6 through the oil cylinder, the larger the weight is, the larger the transmission amount is, the larger the energy loss is, and the energy loss can be effectively reduced by improving the weight of the scarifier 6.

Fig. 7A is a cross-sectional view of a first weight portion and a connecting portion of a rock breaking device according to an embodiment of the present disclosure; fig. 7B is a cross-sectional view of a first weight portion, a connection portion, and a ripping portion of a rock breaking device according to an embodiment of the present disclosure; fig. 7C is a structural diagram of a rock breaking device provided in an embodiment of the present disclosure.

With respect to the arrangement of the first hinge point 101, referring to fig. 7A, 7B, and 7C, the diagonal filling portion in fig. 7A and 7B is a loose part 204, and the cross filling portion is a connection part 203; in addition to the shape shown in fig. 1 to 6B, the first hinge point 101 includes two ear plates, which are disposed at the connection portion 203; of course, the ear plate may be provided at a position above and rearward of the soil loosening portion 204.

Referring to fig. 7C, fig. 7C is a state of the rock breaking device during operation, in which the arm cylinder 8 is extended, the ripper cylinder 9 is extended, and a portion of the ripper cylinder 9 far from the tenth hinge point 1010 is located in the first chamber 301 in the lateral direction, so that the ripper cylinder 9 is not easily damaged; if the ripper cylinder 9 is not located in the first chamber 301, the portion of the ripper cylinder 9 away from the tenth hinge point 1010 is likely to touch loose rock strata or other obstacles, causing damage to the piston rod or the pipeline.

A rock breaking device according to an embodiment of the present disclosure is described below with reference to fig. 8 to 13. Mainly, the rock breaking device of one embodiment of the present disclosure is different from the previous embodiment, and the same or similar parts can be referred to the previous embodiment.

The first weight 201 and the second weight 202 of the rock breaking device of the embodiment of the present disclosure may both have the second chamber 302, and the counterweight bracket 17 or the counterweight may be disposed in the second chamber 302, and of course, the counterweight bracket 17 may be connected to the forearm instead of the ripper. In the breaking device in fig. 8-10 a counterweight holder 17 is arranged in the second chamber, and in the breaking device in fig. 11-12 a counterweight is arranged in the second chamber 302. Fig. 13 shows a block diagram of the second chamber 302.

Fig. 8 is a transportation state diagram of a rock breaking device provided with a first bracket 1701 and a second bracket 1702 according to an embodiment of the present disclosure. Fig. 9 is a schematic view of the first support contacting the first limiting portion in an operating state of the rock breaking device with the first support and the second support according to an embodiment of the disclosure. Fig. 10 is a schematic view illustrating the counterweight bracket contacting the second limiting portion in an operating state of the rock breaking device with the counterweight bracket according to an embodiment of the present disclosure.

Fig. 11 and 12 are schematic diagrams illustrating connection of a second counterweight and a ripper in a rock breaking device provided in an embodiment of the present disclosure, fig. 11 is a side view, and fig. 12 is a schematic diagram illustrating another view. Fig. 13 is a structural diagram of a ripper in a rock breaking device provided in an embodiment of the present disclosure, in which each of a first weight portion and a second weight portion has a second chamber.

An embodiment of the present disclosure shown in fig. 8 provides a breaking device having a first support and a second support, wherein the counterweight support is hinged to the forearm. An embodiment of the present disclosure shown in fig. 9 to 10 provides a rock breaking device with a first support and a second support, wherein a counterweight support is hinged with a ripper.

In order to keep the center of gravity away from the carrier 112 (excavator) without changing the total weight of the rock breaking device, the structure shown in fig. 8 to 10 may be employed.

For example, as shown in fig. 8 to 10, the ripper 6 is provided with a weight bracket 17, one end of the weight bracket 17 is hinged to the first weight portion 201 and the second weight portion 202 of the ripper 6 or to the forearm 5 through a fourth hinge point 104, and fig. 8 shows that one end of the weight bracket 17 is hinged to the forearm 5 through the fourth hinge point 104. Fig. 9 and 10 show that one end of the weight holder 17 is hinged to the ripper 6 through a fourth hinge point 104.

For example, by providing the rotatable counterweight support 17 on the ripper 6 or the arm 5, the center of gravity of the rock breaking device is further away from the vehicle (excavator), and the weight obtained by the rock breaking portion 15 of the ripper 6 is increased to increase the rock breaking capacity of the ripper when the total weight of the rock breaking device is the same.

For example, as shown in fig. 8 to 10, the counterweight support 17 can move around the fourth hinge point 104, the first counterweight 19 is integrally or detachably disposed at the other end of the counterweight support 17, the ripper 6 is provided with a first limiting portion 21 (as shown in fig. 13), the first limiting portion 21 limits a rotation angle (position) of the counterweight support 17, the counterweight support 17 can contact with or separate from the first limiting portion 21, and the counterweight support 17 can transmit gravity to the rock breaking portion 15 through contact with the first limiting portion 21.

For example, as shown in fig. 9 to 10, the weight holder 17 is hinged to the first weight 201 and the second weight 202 of the ripper 6, each of the first weight 201 and the second weight 202 is provided with a second cavity 302 (shown in fig. 13), and a part of the weight holder 17 is located in the second cavity 302 of the first weight 201 and the second weight 202.

For example, as shown in fig. 10 and 13, the ripper 6 is provided with a second stopper portion 22, the weight holder 17 can be in contact with or separated from the second stopper portion 22, the second chamber 302 has an opening, and the first stopper portion 21 and the second stopper portion 22 are two opposing portions of the first weight portion 201 and/or the second weight portion 202, respectively, which form the opening. As shown in fig. 13, a first position-limiting portion 21 and a second position-limiting portion 22 are formed at the opening of the second chamber 302; the counterweight support 17 can make full use of the transverse space position of the scarifier and the small arm, so that the connection between the scarifier 6 and the counterweight support 17 is more reasonable.

For example, the first stopper portion 21 may be a contact point or a fixing portion with a clip function. When the fixing part is used, the specific implementation mode is as follows: the fixed part is including taking elastic clamping part, and the clamping part comprises two clamping pieces and the spring that is located the clamping piece after, and two clamping pieces set up relatively, and counter weight support 17 overcomes the elastic tension of clamping part under the action of gravity, is held by after opening the clamping piece, and clamping-force is relevant with the elasticity of spring to when setting up clamping-force, utilize gravity to get rid of poverty as the principle when certain angle to do not influence counter weight support.

The arrangement of the structure has the advantages that on one hand, the gravity center of the first balance weight 19 is arranged at a position which is farther away from the carrier 112 (the excavator) relative to the scarifier 6 through the balance weight support 17, so that the gravity center of the rock breaking device is farther away from the carrier 112 (the excavator), the rock breaking part 15 of the scarifier 6 can obtain larger gravity through the lever principle analysis, the shearing force of the rock breaking part 15 of the scarifier 6 is in direct proportion to the obtained gravity, and the rock breaking capacity of the rock breaking device can be improved. On the other hand, the rock breaking action of the ripper 6 includes that the small arm 5 rotates around the eighth hinge point 108 and the ripper 6 rotates around the first hinge point 101, when the downward cutting rotation action reaches a certain position, the first counterweight 19 is easily touched with the rock strata or other obstacles, when the first counterweight 19 is touched with the obstacles, the first counterweight 19 can rotate around the fourth hinge point 104, so that the counterweight support 17 and the ripper 6 cannot be damaged, when the downward cutting action is completed, and when the ripper 6 is lifted, the gravity center of the counterweight support 17 is contacted with the first limiting part 21, and the gravity of the first counterweight 19 can be transmitted to the ripper 6 again.

For example, as shown in fig. 10, the ripper 6 is provided with a second stopper portion 22, and the weight holder 17 can be brought into contact with or separated from the second stopper portion 22; therefore, when the scarifier 6 is positioned at a certain angle, the first counterweight 19 rotates to the direction of the excavator to damage other parts of the excavator or the rock breaking device, and the rotating position of the counterweight support 17 far away from the first limiting part 21 is limited by arranging the second limiting part 22, so that the safety is improved.

In another embodiment, the second stopper portion 22 may not be provided, because the direction of gravity of the first counterweight 19 and the counterweight support 17 is always oriented forward and downward due to work habits and optimization of the arrangement of the ripper 6 and the arm 5 in some cases, and it is difficult to change the direction during operation, and therefore the second stopper portion 22 is not necessary.

The first limiting portion 21 and the second limiting portion 22 form a limiting device, in other embodiments, the limiting device may also be disposed as such (not shown in the figures), the second cavity 302 is not disposed in the first weight portion 201 and the second weight portion 202, the counterweight support 17 is hinged to the side portions of the first weight portion 201 and the second weight portion 202, a limiting block hinge point is disposed on the side portions of the first weight portion 201 and the second weight portion 202, a sliding cavity is longitudinally disposed along the middle portion of the limiting block, the counterweight support 17 is provided with a limiting block sliding fulcrum, the limiting block is hinged to the side portions of the first weight portion 201 and the second weight portion 202, the sliding fulcrum of the counterweight support 17 can slide in the limiting block sliding cavity, and two end portions of the sliding cavity limit the rotation angle of the counterweight support 17. This way, it should be noted that the weight of the first weight portion 201 and the second weight portion may be set relatively small, and may even be smaller than the weight of the portion of the ripper 6 located at the interface 14 toward the ripping portion 204, because the weight of the first weight 19 may be equivalent to the role of the first weight portion 201 and the second weight portion 202.

The arrangement of the first balance weight 19 enables the rock breaking device to fully utilize the longitudinal space to obtain larger downward cutting force under the condition of obtaining a reasonable common operation range, and in this case, the scarifier oil cylinder 9 and the small arm 6 can not be positioned in the first cavity 301.

The limiting device may also be provided as a counterweight support 24 (described later) as shown in fig. 14, 15, and 16, and the limiting device may be provided in many ways as long as the rotation angle of the counterweight support 17 can be limited, which is not listed here.

As shown in fig. 8 to 10, the first balance weight 19 has a circular shape, and the first balance weight 19 is hinged to the balance weight bracket 17 through the sixth hinge point 106. According to the working characteristics of the ripper 6, the first counterweight 19 usually has a dragging action towards the excavator after contacting with the obstacle, and the drag resistance can be effectively reduced because the resistance of the obstacle is usually larger and the first counterweight 19 rotates around the sixth hinge point 106.

Referring to fig. 8 and 9, the weight bracket 17 includes a first bracket 1701 and a second bracket 1702, one end of the first bracket 1701 is hinged to the fourth hinge point 104 with the first weight portion 201 and the second weight portion 202 of the ripper 6, the other end of the first bracket 1701 is hinged to the fifth hinge point 105 with the second bracket 1702, the first bracket 1701 and the second bracket 1702 are respectively provided with a bracket fixing portion, the first bracket 1701 and the second bracket 1702 are detachably and fixedly connected by the bracket fixing portion, and the other end of the second bracket 1702 is provided with a first weight 19.

Since the counterweight support 17 and the first counterweight 19 usually occupy larger spatial positions, which easily causes too high height to be difficult to transport during the transportation of the carrier 112 (excavator), and the workload of assembling and disassembling the counterweight support 17 and the first counterweight 19 is larger, in the rock breaking device provided by some embodiments of the disclosure, in order to meet the transportation and reduce the workload, the 1701 of the first support and the second support 1702 are detachably and fixedly connected by the fixing portion, after the fixing of the fixing portion is released, the 1702 of the second support rotates around the fifth hinge point 105 relative to the 1701 of the first support, so that the first counterweight 19 and the counterweight support 17 can meet the transportation height, and after the 1701 of the first support and the 1702 of the second support are fixed by the fixing portion, the gravity center adjusting function of the first counterweight 19 is restored, and the conversion workload of the gravity center adjusting function is smaller relative to the assembling and disassembling of the first counterweight 19 and the counterweight support 17.

For example, as shown in fig. 11 to 13, each of the first weight 201 and the second weight 202 has a second chamber 302, each of the first weight 201 and the second weight 202 is detachably provided with a second balance weight 18, and at least a part of the second balance weight 18 is located in the second chamber 302.

The second counterweight 18 may adjust the weight of the ripper 6. In other embodiments, the first weight portion 201 and the second weight portion 202 may not be provided with the second counter weight 18.

As shown in fig. 11, a portion of the second counterweight 18 can be located within the second chamber 302. Therefore, the second counterweight 18 can fully utilize the space of the second chamber 302, and obtain larger weight in a limited space range, thereby being beneficial to reducing the volume of the rock breaking device and increasing the flexibility of the rock breaking device.

As shown in fig. 11, the second counterweight 18 is removably connected to the ripper 6 through a fourth hinge point 104; the second counterweight 18 and the first counterweight 19 can be easily interchanged to meet different operational requirements. For example, when the breaking device is working on a slope or the hardness of the formation is low, the second counterweight 18 is better than the first counterweight 19 because the second counterweight 18 is more flexible than the first counterweight 19, and when the hardness of the formation is greater, the first counterweight 19 is better than the second counterweight 18, so that a more optimal configuration is achieved by the interchange.

The rock breaking device provided by an embodiment of the present disclosure is described below with reference to fig. 14 to 16. Fig. 14 is a schematic view of a rock breaking device according to an embodiment of the present disclosure (a schematic view of a piston rod in an extended state when a counterweight support is connected to a forearm); fig. 15 is a schematic view of a rock breaking device according to an embodiment of the present disclosure (a schematic view of a piston rod in a retracted state when a counterweight support is connected to a forearm); and fig. 16 is a structural diagram of a counterweight support in the rock breaking device provided in an embodiment of the present disclosure.

As shown in fig. 14 and 15, a rock breaking device provided by an embodiment of the present disclosure includes: scarifiers 6, small arms 5, scarifier oil cylinders 9 and a counterweight support 17. Ripper 6 includes ripping portion 204. The soil loosening portion 204 has a rock breaking portion 15. The small arm 5 is hinged to the ripper 6 through a first hinge point 101. One end of the ripper oil cylinder 9 is hinged to the small arm 5 through a second hinge point 102, and the other end of the ripper oil cylinder 9 is hinged to the ripper 6 through a third hinge point 103. One end of the counterweight bracket 17 is hinged to the small arm 5 through a fourth hinge point 104, the counterweight bracket 17 can move around the fourth hinge point 104, and the other end of the counterweight bracket 17 is integrally or detachably provided with a first counterweight 19.

For example, as shown in fig. 14 and 15, the counterweight support bracket 17 is rotatably connected to the arm 5 via the counterweight support 24, one end of the counterweight support 24 is hinged to the eleventh hinge point 1011 with the counterweight support bracket 17, and the other end of the counterweight support 24 is hinged to the twelfth hinge point 1012 with the arm 5.

In some embodiments, as shown in fig. 15, the weight support 17 may also include a first support 1701 and a second support 1702, which are described with reference to the first support 1701 and the second support 1702 and will not be described herein again.

For example, the first weight 19 has a circular shape, and the first weight 19 is hinged to the weight holder 17 through the sixth hinge point 106. In other embodiments, the weight holder 17 may be integrated with the first weight 19.

Such a configuration is advantageous in that, when the counterweight support 17 is disposed on the boom 5, it is also advantageous for the center of gravity of the rock breaking device to be away from the carrier 112 (excavator), in which case the energy loss of the ripper cylinder may be greater.

For example, the arm 5 is provided with a first stopper portion 21, the weight holder 17 can transmit the gravity to the rock breaking portion 15 by contact with the first stopper portion 21, and the weight holder 17 can be in contact with or separated from the first stopper portion 21.

Such a structural arrangement has the advantage that the counterweight support 17 and the first counterweight 19 are also suitable for other breaking devices of the prior art, which are able to achieve the effect of the breaking device shown in fig. 1 to 4.

Referring to fig. 16, the weight support 24 includes a support barrel 2401, a piston 2403 and a piston rod 2402, the support barrel 2401 is provided with a hinge hole and a chamber, the piston rod 2402 is provided with a hinge hole, the piston 2403 is integrated with or detachably connected to the piston rod 2402, the piston 2403 is in fit contact with the chamber of the support barrel 2401, and air in the chamber can be discharged out of the chamber or air out of the chamber can be sucked into the chamber by sliding fit of the piston 2403 and the chamber of the support barrel 2401.

Such a structure is advantageous in that the cooperation of the supporting cylinder 2401, the piston 2403 and the piston rod 2402 can limit the rotation speed of the counterweight bracket 17 around the fourth hinge point 104 while supporting the counterweight bracket 17, because if the speed of the piston rod is not too fast during recovery, the air in the cavity is exhausted from the outside of the cavity through the fit gap between the piston and the cavity, so that the recovery is smoothly realized.

In actual operation, when the first counterweight 19 is in contact with a rock stratum and the first counterweight 19 drives the counterweight support 17 to rotate around the 4 th hinged point, the rotating speed of the counterweight support is limited by the cutting speed of the scarifier 6 and is not fast relatively, when the recovery speed of the piston rod is too fast, air flow in unit time is limited due to the fact that the fit clearance between the piston and the chamber is limited, air pressure is formed in the chamber, the reaction force of the air pressure acts on the piston, rapid recovery of the piston rod is prevented, and therefore the counterweight support is limited from moving too fast around the fourth hinged point; on the contrary, the extending principle of the piston rod is the same, so that the counterweight support 17 does not generate larger impact on the small arm 5, power sources such as high-pressure oil and electric power are not needed, a control device is not needed, and the hydraulic lifting device is simple and practical.

In other embodiments, a breathing port 2405 is provided at the bottom of the supporting cylinder 2401, the chamber is communicated with the breathing port 2405, and air in the chamber can be exhausted out of the chamber or air out of the chamber can be sucked into the chamber through the sliding fit of the piston 2403 and the chamber.

The counterweight support 24 in the rock breaking device provided by the embodiment of the disclosure realizes buffering without an external power source and a separate control device, is completely different from the common control by an oil cylinder, and has a reasonable gap between the piston and the chamber of the support cylinder 2401, which is also equivalent to the function of a breathing port.

As shown in fig. 14 and 15, an embodiment of the present disclosure provides a rock breaking device, including: big arm 4, forearm 5, scarifier 6, lift cylinder 7, arm cylinder 8 and scarifier cylinder 9. One end of big arm 4 is articulated with last automobile body 11 through seventh pin joint 107, the other end of big arm 4 is articulated with forearm 5 through eighth pin joint 108, the one end of lift cylinder 7 is articulated in last automobile body 11, the other end of lift cylinder 7 is articulated in thirteenth pin joint 1013 with big arm 4, lift cylinder 7 can stretch out and draw back and drive big arm 4 and move from top to bottom around seventh pin joint 107, big arm 4 is provided with dipper hydro-cylinder 8, the one end of dipper hydro-cylinder 8 is articulated with big arm 4 through ninth pin joint 109, the other end of dipper hydro-cylinder 8 is articulated with forearm 5, forearm 5 is articulated with agitator 6 through first pin joint 101, the one end of agitator hydro-cylinder 9 is articulated with forearm 5 through second pin joint 102, the other end of agitator hydro-cylinder 9 is articulated with agitator 6 through third pin joint 103, broken portion 15 and the rock stratum contact of agitator 6 break rock.

As shown in fig. 14 and 15, in the rock breaking device, the ripper 6 includes two lugs 205 disposed opposite to each other instead of the first weight portion 201 and the second weight portion 202 in the ripper 6 in the other embodiment, but of course, in the rock breaking device shown in fig. 14 and 15, the two lugs disposed opposite to each other may be replaced with the first weight portion 201 and the second weight portion 202 in the above-described embodiment, respectively. The ripper 6 is of a common structure with two oppositely-arranged ear plates 205, and the structure has relatively small undercutting capacity of the rock breaking part 15 under the condition that a first counter weight is not arranged, and because the weight of the ripper 6 is relatively small, the energy loss of the ripper oil cylinder 9 is relatively large.

Referring to fig. 1 and 10 and fig. 14, in actual operation, when the hardness of the rock formation is relatively small, the rock breaking portion 15 does not leave the ground at the front end portion of the traveling structure 10 during the undercutting process, and the rock breaking portion 15 can complete the undercutting by substantially utilizing the gravity of the portion of the rock breaking device except for the carrier. The parts of the breaking device other than the carrier may also be referred to as breaking arms. When the hardness of the rock stratum is relatively high, the front end of the walking mechanism 10 is separated from the ground under the coordination of the lifting oil cylinder 7, the rear end of the walking mechanism 10 is contacted with the ground, at this time, the rear end of the traveling mechanism 10 and the rock breaking part 15 form two supporting points in the longitudinal direction, the whole rock breaking device, that is, the gravity of the gravity center point formed by the parts of the rock breaking device other than the carrier and the total weight of the carrier (excavator) can be transmitted to the rock breaking part 15, and in a normal case, since the weight of the carrier (excavator) is greater than the weight of the parts of the breaking device other than the carrier, the center of gravity point will be located longitudinally behind the rock breaking portion 15, which, by the weight of the rock breaking device is advanced, under the condition of not changing the weight of the rock breaking device, the gravity center point is moved forwards, so that the distance between the rock breaking part 15 and the gravity center point is smaller, and the rock breaking part 15 can fully utilize the gravity of the carrier (excavator) and the part of the rock breaking device except the carrier to obtain larger downward cutting force. In the case where the rock hardness is relatively high, the tip end portion of the traveling mechanism 10 does not move away from the ground, and the rock breaking unit 15 can use the gravity of a part of the carrier (excavator) in cooperation with the lift cylinder 7 while using the gravity of a part of the rock breaking device other than the carrier.

The closer the rock breaking portion 15 is to the carrier (excavator), the more easily a large downward cutting force is obtained. The more forward the weight of the rock breaking device is, the more advantageous the center of gravity point formed by the part of the rock breaking device other than the carrier and the total weight of the carrier (excavator) is to be moved forward, and the closer the rock breaking portion 15 is to the center of gravity point, the more easily a large downward cutting force can be obtained.

Through embodiment analysis, by arranging the first cavity 301, the first weight part 201 and the second weight part 202, the transverse space is fully utilized, and the rock breaking part 15 can obtain larger lower shearing force under the condition of a reasonable common rock breaking range; the arrangement of the first balance weight 19 fully utilizes the longitudinal space, and is beneficial to obtaining larger lower cutting force under the condition that the rock breaking part 15 has a reasonable common rock breaking range; the structural characteristics of the composite material are different, and the composite material is determined according to actual use conditions.

The different features in different embodiments of the disclosure may be combined with each other without conflict. The same features in different embodiments of the disclosure may be mutually referred to.

The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present disclosure, and all the changes or substitutions should be covered within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. A rock breaking device comprising:

the scarifier comprises a scarifier body, a connecting part, a first weight part and a second weight part, wherein the scarifier body comprises a scarifier body, the first weight part and the second weight part are arranged oppositely, and the scarifier body is connected with the first weight part and the second weight part through the connecting part;

the small arm is hinged with the scarifier through a first hinge point; and

one end of the ripper oil cylinder is hinged with the small arm through a second hinge point, the other end of the ripper oil cylinder is hinged with the ripper through a third hinge point,

wherein, be provided with first cavity between first weight portion and the second weight portion, at least a part of ripper hydro-cylinder and at least a part of forearm are located in the first cavity.

2. The rock breaking device of claim 1, wherein at least a portion of the ripper cylinder and at least a portion of the forearm are aligned within the first chamber in a vertical or longitudinal direction.

3. The rock breaking device according to claim 1, wherein the connecting portion is sandwiched between the first weight portion and the second weight portion, the first cavity is located on a side of the connecting portion away from the loosening portion, and a length of the first cavity in a vertical direction is greater than a thickness of the connecting portion in a lateral direction.

4. The rock breaking device of claim 1, wherein at least half of the ripper cylinder is located within the first chamber in a lateral direction with the ripper cylinder retracted to a shortest position.

5. The rock breaking device of claim 1, wherein the ripper has a rock breaking portion located at an end of the ripper away from the connection portion, a weight and a volume of a portion of the ripper located away from the rock breaking portion at an interface, which is a plane in which a hinge shaft of the first hinge point and a hinge shaft of the third hinge point are located, are respectively greater than a weight and a volume of a portion of the ripper located near the rock breaking portion at the interface.

6. The rock breaking device of claim 5, wherein a weight and a volume of each of the first weight portion and the second weight portion is greater than 50% of a weight and a volume, respectively, of a portion of the ripper located proximate to the rock breaking portion of the interface.

7. The rock breaking device of claim 1, wherein the forearm has more than half the weight or volume laterally within the first chamber with the ripper cylinder retracted to a shortest position.

8. The rock breaking device according to any one of claims 1 to 7, wherein the ripper is provided with a counterweight support, one end of the counterweight support is hinged to the first weight portion and the second weight portion through a fourth hinge point or hinged to the small arm, the counterweight support is capable of moving around the fourth hinge point, a first counterweight is integrally or detachably provided at the other end of the counterweight support, the ripper is provided with a limiting device which limits a rotation angle of the counterweight support, and the counterweight support is capable of transmitting gravity to the rock breaking portion of the ripping portion through the limiting device.

9. The rock breaking device of claim 8, wherein the counterweight support comprises a first support and a second support, one end of the first support is hinged to the first weight portion and the second weight portion or hinged to the fourth hinge point with the small arm, the other end of the first support is hinged to a fifth hinge point with the second support, the first support and the second support are respectively provided with a support fixing portion, the first support and the second support are detachably and fixedly connected through the support fixing portion, and the other end of the second support is provided with the first counterweight.

10. A rock breaking apparatus according to claim 9, wherein the counterweight bracket is hinged to the first and second weights, each of the first and second weights being provided with a second chamber, a portion of the counterweight bracket being located within the second chambers of the first and second weights.

11. A rock breaking device according to claim 10, wherein the limiting device comprises a first limiting portion and a second limiting portion, the second chamber having an opening, the first and second limiting portions being opposing portions of the first and/or second weight portion, respectively, forming the opening.

12. The rock breaking device of claim 8, wherein the first counterweight is circular and is hinged to the counterweight support by a sixth hinge point.

13. A rock breaking apparatus according to any one of claims 1 to 7 wherein each of the first and second weights has a second chamber, each of the first and second weights being removably provided with a second counterweight, at least a portion of which is located within the second chamber.

14. A rock breaking device according to any one of claims 1 to 7, further comprising:

a carrier;

one end of the big arm is connected with the carrier through a seventh hinge point, and the other end of the big arm is hinged with the small arm through an eighth hinge point;

one end of the lifting oil cylinder is hinged to the carrier, the other end of the lifting oil cylinder is hinged to the large arm, and the lifting oil cylinder can stretch and drive the large arm to move up and down around the seventh hinged point; and

and one end of the bucket rod oil cylinder is hinged with the big arm through a ninth hinge point, and the other end of the bucket rod oil cylinder is hinged with the small arm through a tenth hinge point.

15. The rock breaking device of claim 14, wherein the ripper has a weight greater than a weight of the large arm and the ripper has a weight greater than a weight of the small arm.

16. A rock breaking device comprising:

a ripper;

the small arm is hinged with the scarifier through a first hinge point;

one end of the ripper oil cylinder is hinged with the small arm through a second hinge point, and the other end of the ripper oil cylinder is hinged with the ripper through a third hinge point; and

a counterweight support is arranged on the upper portion of the frame,

one end of the counterweight support is hinged with the scarifier or the small arm through a fourth hinge point, the counterweight support can move around the fourth hinge point, and a first counterweight is integrally or detachably arranged at the other end of the counterweight support.

17. The rock breaking device of claim 16, wherein the counterweight support is pivotally connected to the forearm by a counterweight support, one end of the counterweight support being hinged to the counterweight support at an eleventh hinge point and the other end of the counterweight support being hinged to the forearm at a twelfth hinge point.

18. The rock breaking device of claim 17, wherein the counterweight support comprises a support cylinder, a piston and a piston rod, the support cylinder is provided with a hinge hole and a chamber, the piston rod is provided with a hinge hole, the piston is integrally or detachably connected with the piston rod, and the piston is in fit contact with and in sliding fit with the chamber to discharge air in the chamber or suck air out of the chamber into the chamber.

19. A rock breaking device according to claim 18 wherein the bottom of the support canister is provided with a breathing port, the chamber of the support canister communicating with the breathing port.

20. A rock breaking apparatus according to any one of claims 1 to 7, 9 to 12 and 16 to 19, further comprising a vehicle, wherein the vehicle comprises an excavator, the excavator has an upper body, a lower body and a traveling mechanism, the upper body is rotatably connected to the lower body, and the traveling mechanism is provided on the lower body.