Cutting device

Abstract

The utility model belongs to the field of cutting machinery, and particularly provides a cutting device. The cutting device comprises a mounting base used for being mounted on a large cutting arm of the digging and anchoring integrated machine, a supporting arm capable of swinging up and down and left and right is connected to the mounting base through a universal hinge structure, a rock breaking structure is mounted on the supporting arm, and a swinging oil cylinder for driving the supporting arm to swing is further connected between the mounting base and the supporting arm. One end of the swing oil cylinder is installed on the installation base through a universal hinge structure, the other end of the swing oil cylinder is hinged to the supporting arm, and included angles exist between the swing oil cylinder and the supporting arm in the transverse projection and the vertical projection. The cutting device disclosed by the utility model can be mounted on the large cutting arm through the mounting seat and can be matched with the large cutting arm to efficiently excavate a roadway with a special-shaped section. Meanwhile, the cutting device is simple and compact in structure, and normal moving operation of a cutting big arm of the digging and anchoring integrated machine cannot be affected.

Description

Technical Field

[0001] The utility model belongs to the field of cutting machinery, in particular to a cutting device. Background Art

[0002] The integrated mining and anchoring machine includes a cutting arm that can swing up and down, and a rotatable cutting drum is installed at the front end of the cutting arm, and the rotation axis of the cutting drum extends horizontally. The cutting drum can swing with the cutting arm to excavate a coal seam recovery tunnel with a rectangular cross-section. However, for inclined coal seams, since the strength of the coal seam is lower than the strength of the tunnel roof rock, the stress distribution of the surrounding rock is uneven during excavation. Conventional rectangular-section coal seam recovery tunnels are prone to problems such as roof rock crushing and roof rock sliding along the inclination direction of the coal seam. In order to ensure the stability of the tunnel, the cross-section of the recovery tunnel of the inclined coal seam is mostly in the shape of a sloping roof at a certain angle to the roof. Of course, depending on the distribution of the coal seam, during actual construction, there are also coal seam recovery tunnels with special cross-sections such as circular arches and three-center arches.

[0003] The cutting drum of a traditional integrated miner-bolter is incapable of excavating tunnels with irregular cross-sections, such as those with sloping roofs. Currently, cantilevered roadheaders (TBMs) are commonly used to excavate irregular tunnels. These machines consist of a cutting boom that swings up and down, left and right, with a rotatable cutting head mounted at the front end. The cutting head's axis of rotation extends longitudinally, allowing it to swing with the boom to different positions on the tunnel face, thereby excavating irregularly shaped tunnels. However, the excavation efficiency of TBMs is low, making them inadequate for modern mine construction.

[0004] To efficiently excavate irregular-shaped roadways, the applicant has proposed a method that combines the cutting mechanisms of a boom roadheader with those of a combined miner and anchor drill. For example, the cutting boom of the boom roadheader can be mounted on the cutting boom of the combined miner and anchor drill. During construction, the cutting drum can be used to efficiently excavate a rectangular roadway, and then the cutting head can be used to expand and repair the irregular cross-section. This method combines the advantages of the boom roadheader and the combined miner and anchor drill to efficiently excavate irregular-shaped roadways.

[0005] The drive structure of the cutting boom of a cantilever roadheader is relatively complex, with two independent mechanisms driving its left and right swing and up and down swing. Left and right swing is achieved through the rotation of a slewing bearing, while up and down swing is achieved through the telescopic movement of an independent pitch cylinder. This complex structure occupies a large volume. If directly "transplanted" to the cutting boom of a miner-anchor machine, it would affect the normal operation of the cutting drum. Furthermore, the cost of the slewing bearing is relatively high.

[0006] It should be noted that the above description is only for the convenience of searching and understanding the technical solution of this application, and does not necessarily belong to the prior art. Utility Model Content

[0007] The purpose of the utility model is to provide a cutting device to solve the technical problem that the normal operation of the cutting drum is easily affected when the cutting mechanism of a cantilever roadheader is installed on the cutting mechanism of a drilling and anchoring machine.

[0008] To achieve the above-mentioned purpose, the technical solution of the cutting device provided by the present invention is:

[0009] A cutting device includes a mounting base for being installed on the cutting arm of a mining and anchoring machine, the mounting base is connected to a support arm that can swing up and down and left and right through a universal hinge structure, the support arm is installed with a rock breaking structure, and a swinging cylinder for driving the support arm to swing is also connected between the mounting base and the support arm, one end of the swinging cylinder is installed on the mounting base through a universal hinge structure, and the other end is hinged to the support arm, and in the horizontal and vertical projections, there is an angle between the swinging cylinder and the support arm.

[0010] As a further improvement, the swing cylinder is located above the support arm.

[0011] As a further improvement, the other end of the swing cylinder is hinged to the support arm through a universal hinge structure.

[0012] As a further improvement, two swing cylinders are provided, and the two swing cylinders are symmetrically arranged on both lateral sides of the support arm.

[0013] As a further improvement, the universal hinge structure includes a first hinge seat, a second hinge seat, a first hinge axis and a second hinge axis. The second hinge seat is installed on the first hinge seat through the first hinge axis, and the second hinge axis is installed on the second hinge seat. The extension directions of the first hinge axis and the second hinge axis are perpendicular to each other.

[0014] As a further improvement, the mounting base includes a base plate and a vertical plate installed on the base plate, the vertical plate is located at the rear end of the base plate, the base plate is used to be installed and connected with the cutting arm of the mining and anchoring machine, and the support arm and the swing cylinder are connected to the vertical plate.

[0015] As a further improvement, the rock breaking structure is a rotatable cutting head with a rotating axis extending longitudinally, and the cutting head is equipped with cutting teeth; or the rock breaking structure is a rotatable cutting disc with a rotating axis extending longitudinally, and the cutting disc is equipped with a roller cutter.

[0016] As a further improvement, the cutting head is provided with a tooth seat, and the cutting teeth are rotatably mounted on the tooth seat.

[0017] This utility model pioneers the provision of a compact cutting device that can be installed on a drilling and anchoring machine. Its beneficial effect is that, during use, the cutting device can be mounted on the drilling and anchoring machine's cutting boom via a mounting bracket. During the cutting operation, a swing cylinder drives the support arm to swing up and down, left and right, and delivers the rock-breaking components to the target position. Compared to the cutting devices of conventional cantilevered roadheaders, the support arm of this utility model is connected to the mounting bracket via a universal joint structure, and its vertical and left and right swings are driven by a swing cylinder. This results in a simpler structure. When installed as a whole on the drilling and anchoring machine, it does not affect the normal movement of the drilling and anchoring machine's cutting drum. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of an embodiment of the cutting device of the present invention when it is installed on a cutting arm;

[0019] Figure 2 This is a front view of an embodiment of a cutting device in the present invention;

[0020] Figure 3 A top view of an embodiment of a cutting device in the present invention;

[0021] Figure 4 This is a diagram showing one of the working states of the cutting device embodiment of the present invention installed behind the anchoring and digging machine;

[0022] Figure 5 This is another working state diagram of the cutting device embodiment of the present invention installed behind the anchoring and mining machine.

[0023] Description of reference numerals:

[0024] 1. Mounting base; 2. Support arm; 3. Swing cylinder; 4. Cutting head; 5. First articulated shaft; 6. Second articulated shaft; 7. Cutting arm; 8. Cutting drum; 9. Main machine; 101. Bottom plate; 102. Vertical plate; 401. Cutting teeth; 402. Tooth seat. DETAILED DESCRIPTION

[0025] To efficiently excavate irregular-shaped tunnels, the cutting mechanism of a boom-type tunnel boring machine can be integrated with the cutting mechanism of a cantilevered roadheader. During construction, the cutting drum first swings up and down to efficiently excavate a rectangular tunnel. The cutting head (or other rock-breaking mechanism) then swings up and down and left and right to flexibly trim and expand the excavation to form the irregular-shaped tunnel. However, due to the complex and large size of existing cutting mechanisms, simply "transplanting" the cutting mechanism of a conventional cantilevered roadheader to the cutting boom of a boom-type tunnel boring machine would easily affect the normal operation of the cutting drum.

[0026] To address the aforementioned issues, the basic technical concept of this utility model is to provide a cutting device universally hinged to a base (mounting base). Specifically, the cutting device's support arm is hinged to the base via a universal hinge structure. A swing cylinder, positioned at a predetermined angle to the cutting device's support arm, drives the support arm to swing vertically, horizontally, or in any direction. The following describes this utility model in further detail, combined with examples.

[0027] like Figure 1-Figure 3 As shown, as a basic embodiment, the cutting device includes a mounting base 1, which is mounted on the cutting boom 7 of the anchor miner. A support arm 2 is connected to the mounting base 1 via a universal joint. Driven by a corresponding drive mechanism, the support arm 2 can swing up and down and left and right relative to the mounting base 1. Specifically, the drive mechanism includes a swing cylinder 3 connected between the support arm 2 and the mounting base 1. One end (the rear end) of the swing cylinder 3 is mounted on the mounting base 1 via a universal joint, and the other end is hinged to the support arm 2. In both horizontal and vertical projections, the swing cylinder 3 and the support arm 2 form an angle. This allows the telescopic motion of the swing cylinder 3 to be decomposed into the driving force that drives the support arm 2 to swing up and down and left and right. Furthermore, since the rear end of the swing cylinder 3 is also connected to the mounting base 1 via a universal joint, it can swing flexibly in different directions, thereby driving the support arm 2 to swing up and down and left and right. A rock breaking structure is installed on the support arm 2. As the support arm 2 swings, the rock breaking structure can move to any position on the tunnel face to excavate and break the rock.

[0028] like Figure 4 and Figure 5 As shown, the cutting device can be installed in a miner-anchor machine. The miner-anchor machine can be consistent with the existing technology and includes a main machine 9, a cutting boom 7 that can swing up and down, and a cutting drum 8 mounted on the cutting boom 7. Accordingly, the cutting boom 7 can be equipped with a guide drive device, such as a telescopic drive mechanism, that cooperates with the mounting base 1 to drive the cutting device forward and backward along the cutting boom 7.

[0029] During construction, if Figure 4 As shown, the cutting arm 7 can be swung up and down first, and the cutting drum 8 can efficiently excavate the rectangular cross-section tunnel. Figure 5 As shown, the cutting arm 7 can be lowered to the bottom, and under the action of the swing cylinder 3, the support arm 2 can be swung up and down, left and right to any position to start trimming and expanding to dig out the ideal section.

[0030] The cutting device in this embodiment can be mounted on the cutting boom 7 of a combined miner and anchor machine to efficiently excavate tunnels with irregular cross-sections. Compared to the cutting devices of conventional cantilevered roadheaders, the support arm 2 in this utility model is connected to the mounting base 1 via a universal hinge structure. Its vertical and horizontal swinging motion is driven by a swing cylinder 3, resulting in a simpler structure. When installed in a combined miner and anchor machine, it does not affect the normal operation of the cutting drum 8.

[0031] As a preferred embodiment, Figure 2-Figure 4 As shown, the swing cylinder 3 is located above the support arm 2. Compared with arranging the swing cylinder 3 below the support arm 2, the height of the support arm 2 can be reduced, thereby making more space, making installation and use more convenient.

[0032] As a preferred embodiment, Figure 2 and Figure 3 As shown, the swing cylinder 3 can also be hinged to the support arm 2 via a universal hinge structure. This allows both ends of the swing cylinder 3 to be relatively flexible, thereby allowing the support arm 2 to swing with a relatively large amplitude. However, it should be noted that in other alternative embodiments, the front end of the swing cylinder 3 can also be hinged to the support arm 2 only via an articulated shaft. In this case, a certain gap can be left between the front end of the swing cylinder 3 and the articulated shaft. As the support arm 2 swings left and right, the gap between the front end of the swing cylinder 3 and the articulated shaft causes the angle between the swing cylinder 3 and the support arm 2 to change within a certain range.

[0033] Based on any of the above embodiments, preferably, two swing cylinders 3 are provided, and the two swing cylinders 3 are symmetrically arranged on the lateral (left and right) sides of the support arm 2. Compared with the method of providing only one swing cylinder 3, the two swing cylinders 3, the support arm 2, and the guide seat together form a spatial triangular prism structure, which has greater stability.

[0034] Based on any of the above embodiments, preferably, for cost reduction, a universal joint structure is selected that includes a first articulation axis 5 and a second articulation axis 6 with mutually perpendicular extension axes (comparable to a cross-axis articulation structure). Specifically, the universal joint structure also includes a first articulation seat and a second articulation seat. The second articulation seat is hinged to the first articulation seat via the first articulation axis 5, and the second articulation axis 6 is mounted on the second articulation seat. The first articulation axis 5 enables the second articulation seat to swing relative to the first articulation seat, and structures mounted on the second articulation axis 6 (such as the support arm 2 and the swing cylinder 3) can swing relative to the second articulation seat via the second articulation axis 6. Compared to a spherical universal joint structure, this type of universal joint structure is less expensive. More specifically, each of the first and second articulation seats can be formed from two spaced-apart ear plates, and the first and second articulation axes 5 and 6 can be interspersed and mounted on the ear plates, specifically using pins. In this way, during installation, the first hinge seat can be fixed on the corresponding foundation and connected to the corresponding structure that needs to swing through the second hinge shaft 6.

[0035] As another preferred embodiment, Figure 1-Figure 3 As shown, the mounting base 1 comprises a base plate 101 and a vertical plate 102 mounted on the base plate 101. The vertical plate 102 is located at the rear end of the base plate 101. The base plate 101 is used for mounting and connecting with the cutting boom 7 of the anchor miner. Specifically, the relevant connecting structure is provided on the base plate 101, and the support arm 2 and the swing cylinder 3 are connected to the vertical plate 102. Of course, to ensure the stability of the vertical plate 102, ribs can be added if necessary. This allows the mounting base 1 to have a larger mating area with both the cutting boom 7 and the support arm 2, while also reducing the weight of the mounting base 1. Of course, in other alternative embodiments, the mounting base 1 may also be a complete block structure.

[0036] In this embodiment, the rock breaking structure on the support arm 2 is a rock breaking structure with a longitudinal axis rotation. Figure 1-Figure 3 As shown, the rock-breaking structure can be a cutting head 4, mounted with picks 401. Alternatively, in other embodiments, the rock-breaking structure can be a longitudinally rotating cutting disc with cutters mounted on it. To better protect the picks 401, in a preferred embodiment, the cutting head 4 is provided with a tooth holder 402, on which the picks 401 are rotatably mounted, enabling the picks 401 to rotate relative to the cutting head 4. This allows the picks 401 to rotate in harder formations, providing a buffering (unloading) effect.

[0037] Of course, in other embodiments, the rock breaking structure may also be a new type of rock breaking structure such as jet rock breaking or laser rock breaking.

[0038] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments without inventive effort, or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A cutting device, characterized in that: It includes a mounting base for being installed on the cutting arm of the mining and anchoring machine, the mounting base is connected to a support arm that can swing up and down and left and right through a universal hinge structure, the support arm is installed with a rock breaking structure, and a swing cylinder for driving the support arm to swing is also connected between the mounting base and the support arm. One end of the swing cylinder is installed on the mounting base through a universal hinge structure, and the other end is hinged to the support arm. In the horizontal and vertical projections, there is an angle between the swing cylinder and the support arm.

2. The cutting device according to claim 1, characterized in that: The swing cylinder is located above the support arm.

3. The cutting device according to claim 2, characterized in that: The other end of the swing cylinder is hinged to the support arm through a universal hinge structure.

4. The cutting device according to any one of claims 1 to 3, characterized in that: There are two swing cylinders, and the two swing cylinders are symmetrically arranged on both sides of the support arm.

5. The cutting device according to any one of claims 1 to 3, characterized in that: The universal hinge structure includes a first hinge seat, a second hinge seat, a first hinge shaft and a second hinge shaft. The second hinge seat is installed on the first hinge seat through the first hinge shaft. The second hinge shaft is installed on the second hinge seat. The extension directions of the first hinge shaft and the second hinge shaft are perpendicular to each other.

6. The cutting device according to any one of claims 1 to 3, characterized in that: The mounting base includes a base plate and a vertical plate installed on the base plate. The vertical plate is located at the rear end of the base plate. The base plate is used to be installed and connected with the cutting arm of the mining and anchoring machine. The support arm and the swing cylinder are connected to the vertical plate.

7. The cutting device according to any one of claims 1 to 3, characterized in that: The rock breaking structure is a rotatable cutting head with a rotating axis extending longitudinally, and the cutting head is equipped with cutting teeth; or the rock breaking structure is a rotatable cutting disc with a rotating axis extending longitudinally, and the cutting disc is equipped with a hob.

8. The cutting device according to claim 7, characterized in that: A tooth seat is provided on the cutting head, and the cutting teeth are rotatably mounted on the tooth seat.

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