Walking device and driving and anchoring machine
By installing support components at the front and rear ends of the roadheader chassis, the front and rear ends of the tracked walking mechanism are raised, solving the problem of tracks sinking into the ground and enabling continuous operation and improved work efficiency of the roadheader.
Patent Information
- Application Number
- CN202520174581.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-26
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2035-01-26
AI Technical Summary
During the tunneling process, the tracked walking mechanism of existing roadheaders is prone to sinking to the bottom due to high pressure, which affects continuous operation.
A front support assembly is installed at the front end of the roadway chassis of the roadheader. The front support assembly is used to lift the front end of the tracked walking mechanism by contacting the roadway ground. A rear support assembly is installed at the rear end of the chassis. The rear support assembly is used to lift the rear end of the chassis by contacting the roadway ground, thus preventing the tracks from sinking to the bottom.
It effectively prevents the tracks from sinking during operation, ensuring continuous operation of the tunneling and anchoring machine and improving work efficiency.
Smart Images

Figure CN223647813U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of anchor excavating machine, and particularly relates to a walking device and an anchor excavating machine. BACKGROUND
[0002] The anchor excavating machine is a comprehensive mechanized excavating equipment integrating excavation and anchor rod supporting, and is widely applied to the excavation and supporting of coal mine rock roadways. The anchor excavating machine has high cutting and excavating capacity, and can rapidly and accurately excavate the required space and passing road from rock and coal seam.
[0003] The existing anchor excavating machine generally adopts a tracked walking mechanism. The excavating mechanism and the anchor rod supporting mechanism are both installed on the walking mechanism. During use, the walking mechanism needs to be moved to the end of the tunnel and stopped, the excavating mechanism is used for excavation, and the anchor rod supporting mechanism is used for supporting, and then the anchor excavating machine continues to move and repeats the operation.
[0004] However, during the excavation process, the anchor excavating machine generates a large pressure on the walking mechanism, which easily causes the track in the walking mechanism to sink, and is not conducive to the continuous operation of the anchor excavating machine. CONTENT OF THE INVENTION
[0005] Embodiments of the present application provide a walking device and an anchor excavating machine to solve the problem that the anchor excavating machine generates a large pressure on the walking mechanism during the excavation process, which easily causes the track in the walking mechanism to sink.
[0006] In a first aspect, the embodiments of the present application provide a walking device, comprising: a chassis, wherein a tracked walking mechanism is arranged on the chassis;
[0007] a front support assembly, wherein the front support assembly comprises a front support member, the front support member is arranged on the chassis, and the front support member is used for abutting against a support surface of a roadway to make a front end of the tracked walking mechanism away from the support surface;
[0008] a rear support assembly, wherein the rear support assembly comprises a rear support member, the rear support member is arranged on the chassis, and the rear support member is used for abutting against the support surface to make a rear end of the tracked walking mechanism away from the support surface.
[0009] In a possible implementation, the front support assembly further comprises a first adjusting member, the first adjusting member is arranged on the chassis, and is used for adjusting the transverse position of the front end of the chassis.
[0010] In a possible implementation, the first adjusting member comprises a support slide, a sliding seat and an inclination oil cylinder, and the front support member is a support oil cylinder.
[0011] The first sleeve is arranged on the chassis, the first sleeve is sleeved on the front support, the sliding seat is hinged on the piston rod of the front support, the sliding seat is slidingly connected on the support slide, one end of the tilt cylinder is hinged on the sliding seat, and the other end of the tilt cylinder is hinged on the first sleeve, and the support slide is used to abut against the roadway ground.
[0012] When the support slide abuts against the roadway ground, the tilt cylinder pushes the first sleeve together with the sliding seat to slide on the support slide, so as to push the front end of the chassis to move transversely.
[0013] In a possible implementation, the front support is provided with two front supports which are symmetrically arranged at the front end of the chassis.
[0014] In a possible implementation, the rear support assembly further comprises a second adjusting member, the second adjusting member is arranged on the chassis, and is used to adjust the transverse position of the rear end of the chassis.
[0015] In a possible implementation, the second adjusting member comprises a support base plate, a transverse pushing cylinder, a slide plate and a connecting seat, and the rear support is a support cylinder.
[0016] The slide plate is arranged on the support base plate, the support base plate is used to abut against the roadway ground, the connecting seat is hinged on the piston rod of the rear support, the connecting seat is slidingly connected on the slide plate, one end of the transverse pushing cylinder is hinged on the chassis, and the other end of the transverse pushing cylinder is hinged on the support base plate.
[0017] When the support base plate abuts against the roadway ground, the transverse pushing cylinder pushes the chassis together with the connecting seat to slide on the slide plate, so as to push the rear end of the chassis to move transversely.
[0018] In a possible implementation, the side of the support base plate away from the chassis is provided with anti-skid teeth.
[0019] In a possible implementation, a sliding groove is formed in the slide plate, and a wear-resistant strip is arranged on the side of the connecting seat close to the rear support, and the wear-resistant strip abuts against the groove wall of the sliding groove.
[0020] In a possible implementation, the rear support is provided with two rear supports, and the connecting seat is hinged on each of the two rear supports, and the slide plate on the support base plate is provided with two slide plates to connect the corresponding connecting seats.
[0021] In a possible implementation, the rear support is provided with two rear supports, and the connecting seat is hinged on each of the two rear supports, and the slide plate on the support base plate is provided with two slide plates to connect the corresponding connecting seats.
[0022] The walking device and the anchor excavator provided by the embodiment of the application can avoid the possibility that the track is buried by the large pressure generated during the operation of the anchor excavator, so as to facilitate the continuous operation of the anchor excavator. BRIEF DESCRIPTION OF DRAWINGS
[0023] The drawings incorporated into the specification and constituting a part of the specification show embodiments consistent with the application and, together with the specification, serve to explain the principles of the application.
[0024] Figure 1 The structural schematic diagram of the walking device provided by the application is shown in the figure.
[0025] Figure 2 The structural schematic diagram of the front support assembly is shown in the figure. Figure 1
[0026] The connection structural schematic diagram of the rear support assembly is shown in the figure. Figure 3 Figure 1 The sectional view of the rear support assembly is shown in the figure.
[0027] Figure 4 Figure 1 The connection structural schematic diagram of the rear support piece is shown in the figure.
[0028] Figure 5 The connection structural schematic diagram of the rear support piece is shown in the figure. Figure 1 The reference signs are explained as follows:
[0029] 100, chassis; 110, track walking mechanism; 120, first sleeve; 130, second sleeve; 200, front support assembly; 210, front support piece; 220, first adjusting piece; 221, support slide; 222, sliding seat; 223, inclination oil cylinder; 300, rear support assembly; 310, rear support piece; 320, second adjusting piece; 321, support bottom plate; 3211, anti-skid tooth; 322, transverse pushing oil cylinder; 323, slide plate; 324, connecting seat; 3241, wear-resistant strip; 400, hydraulic platform; 500, electrical platform.
[0030]
[0031] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation
[0032] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.
[0033] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0034] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "fixation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0035] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0036] A roadheader is a comprehensive mechanized tunneling machine that integrates tunneling and anchor bolt support. Roadheaders are widely used in the tunneling and support of rock roadways in coal mines. They have efficient cutting and excavation capabilities and can quickly and accurately extract the required space and passageways from rocks and coal seams.
[0037] Existing tunneling and anchoring machines generally use tracked walking mechanisms. Both the tunneling mechanism and the anchor bolt support mechanism are installed on the walking mechanism. During use, the tunneling and anchoring machine needs to move to the end of the tunnel and stop moving forward. The tunneling mechanism then excavates, and after the anchor bolt support mechanism completes the support, the machine continues to move forward and repeat the operation.
[0038] However, during the tunneling process, the roadheader generates significant pressure on the traveling mechanism, which can easily cause the tracks in the traveling mechanism to sink into the ground, hindering the continuous operation of the roadheader.
[0039] This application provides a walking device and a roadheader. The walking device has a front support assembly at the front end of the chassis. The front support member of the front support assembly extends a piston rod to abut against the roadway ground, thereby lifting the front end of the tracked walking mechanism mounted on the chassis to detach from the ground. At the same time, a rear support assembly is provided at the rear end of the chassis. The rear support member of the rear support assembly extends a piston rod to abut against the roadway ground, thereby lifting the rear end of the chassis to detach the tracked walking mechanism from the ground. This avoids the possibility of the tracks sinking to the bottom due to the large pressure generated during the operation of the roadheader, thus facilitating the continuous operation of the roadheader.
[0040] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.
[0041] In a first aspect, embodiments of this application provide a walking device, referring to... Figure 1 , Figure 2 and Figure 3 The walking device includes: a chassis 100, on which a tracked walking mechanism 110 is provided;
[0042] The front support assembly 200 includes a front support member 210, which is disposed on the chassis 100. The front support member 210 is used to abut against the support surface of the roadway so that the front end of the tracked walking mechanism 110 is disengaged from the support surface.
[0043] The rear support assembly 300 includes a rear support member 310, which is disposed on the chassis 100. The rear support member 310 is used to abut against the support surface of the roadway so that the rear end of the tracked walking mechanism 110 is disengaged from the support surface.
[0044] The supporting surface of the tunnel is the tunnel floor, with one end closer to the direction of travel of the roadheader serving as the front end of the chassis 100 and the other end serving as the rear end of the chassis 100. The tracked walking mechanism 110 is installed at the bottom of the chassis 100 to drive the chassis 100 to move. The tracked walking mechanism 110 is existing technology and will not be described in detail here.
[0045] An electrical platform 500 and a hydraulic platform 400 are also mounted on the chassis 100. The electrical platform 500 and hydraulic platform 400 are located on opposite sides of the chassis 100. The hydraulic platform 400 provides hydraulic power to the entire roadheader, front support assembly 200, and rear support assembly 300. The electrical platform 500 serves as the central computer, providing control over the front support assembly 200 and rear support assembly 300.
[0046] The piston rod extends from the front support member 210 and abuts against the roadway ground, thereby lifting the front end of the chassis 100 and its tracked walking mechanism 110 to detach from the ground; at the same time, the piston rod extends from the rear support member 310 and abuts against the roadway ground, thereby lifting the rear end of the chassis 100 and its tracked walking mechanism 110 to detach from the ground, thus avoiding the possibility of the tracks sinking to the bottom due to the large pressure generated during the operation of the roadheader.
[0047] During use, the front support assembly 200 and the rear support assembly 300 respectively contact the roadway surface to bear the weight of the entire roadway blocker and the pressure during operation. In this process, even if the support of the front support assembly 200 and the rear support assembly 300 sinks, the piston rod can be retracted to quickly disengage them, so that the tracked walking mechanism 110 is on the normal roadway surface, so as to avoid affecting the operation of the roadway blocker and improve the operation efficiency.
[0048] In one possible implementation, refer to Figure 1 and Figure 2 The front support assembly 200 also includes a first adjustment member 220, which is disposed on the chassis 100 for adjusting the lateral position of the front end of the chassis 100.
[0049] Furthermore, the first adjusting member 220 includes a support slide 221, a sliding seat 222, and an tilting cylinder 223, while the front support member 210 is a support cylinder;
[0050] A first sleeve 120 is provided on the chassis 100. The first sleeve 120 is sleeved on the front support member 210. The sliding seat 222 is hinged to the piston rod of the front support member 210. The sliding seat 222 is slidably connected to the support slide 221. One end of the tilting cylinder 223 is hinged to the sliding seat 222, and the other end is hinged to the first sleeve 120. The support slide 221 is used to abut against the roadway ground.
[0051] When the support slide 221 comes into contact with the roadway ground, the tilting cylinder 223 pushes the first sleeve 120 together with the sliding seat 222 to slide on the support slide 221, so as to push the front end of the chassis 100 to move laterally.
[0052] The first sleeve 120 is welded and fixed to the front end of the chassis 100 in a vertical direction. The front support member 210 is fixed inside the first sleeve 120 by a pin, so that the piston rod of the front support member 210 can extend and retract in a vertical direction. The sliding seat 222 is hinged to the piston rod of the front support member 210, and the hinge axis of the sliding seat 222 is set in a horizontal direction. The hinge axes at both ends of the tilt cylinder 223 are both in a horizontal direction. The support slide 221 is groove-shaped, so that the sliding seat 222 can slide and be embedded in the support slide 221 and slide along the length of the support slide 221. The support slide 221 guides the sliding seat 222 and increases the contact area between the front support assembly 200 and the roadway floor, so as to reduce the sinking of the front support assembly 200. The tilting cylinder 223 and the support slide 221 have an angle, so that the tilting cylinder 223 can also push the support slide 221 to tilt to adapt to the uneven ground of the roadway. The tilting cylinder 223 plays a supporting role and improves the supporting capacity of the front support assembly 200.
[0053] In one possible implementation, refer to Figure 1 and Figure 2 There are two front support members 210, which are symmetrically arranged at the front end of the chassis 100.
[0054] Two first adjusting components 220 are configured, each corresponding to one of the two front support components 210. The two front support components 210 enhance the support strength of the chassis 100 and reduce the subsidence of the support slide 221. The underground environment is complex, with varying bottom conditions in the roadway, including inconsistent hardness on both sides. This can lead to uneven ground subsidence and create a tilt angle. Furthermore, the balance of the front end of the chassis 100 can be adjusted by regulating the extension length of the piston rods of the two front support components 210, thus leveling the front end and aligning the machine body. Additionally, the chassis 100 can be lifted on one side to accommodate coal seam angle shifts, with a maximum adaptability angle of 14°.
[0055] In one possible implementation, refer to Figure 1 , Figure 3 and Figure 4 The rear support assembly 300 also includes a second adjustment member 320, which is disposed on the chassis 100 for adjusting the lateral position of the rear end of the chassis 100.
[0056] Specifically, the second adjusting member 320 includes a supporting base plate 321, a transverse pushing cylinder 322, a slide plate 323 and a connecting seat 324, and the rear supporting member 310 is a supporting cylinder;
[0057] The slide plate 323 is mounted on the support base plate 321, which is used to abut against the roadway floor. The connecting seat 324 is hinged to the piston rod of the rear support member 310 and is slidably connected to the slide plate 323. One end of the transverse pushing cylinder 322 is hinged to the chassis 100 and the other end is hinged to the support base plate 321.
[0058] After the support base plate 321 comes into contact with the roadway floor, the lateral pushing cylinder 322 pushes the chassis 100 together with the connecting seat 324 to slide on the slide plate 323, so as to push the rear end of the chassis 100 to move laterally.
[0059] The chassis 100 is equipped with a second sleeve 130, which is vertically oriented. A rear support member 310 is installed inside the second sleeve 130, with its piston rod extending out of the sleeve. A connecting seat 324 is hinged to the piston rod of the rear support member 310, with its hinge axis horizontal. A slide plate 323 is fixed to the support base plate 321 by screws. The connecting seat 324 slides along the length of the slide plate 323. The hinge axes at both ends of the lateral push cylinder 322 are horizontal. When the rear support member 310 extends its piston rod, causing the connecting seat 324 to move downwards, the lateral push cylinder 322 extends synchronously to keep the support base plate 321 parallel to the roadway floor. The lateral push cylinder 322 also provides support, increasing the support strength of the chassis 100.
[0060] When lateral movement or tail swing of the chassis 100 is required, the chassis 100 is first supported and lifted by extending the piston rods of the front support member 210 and the rear support member 310. When tail swing is required, the chassis 100, together with the connecting seat 324, is pushed to slide on the slide plate 323 by the lateral push cylinder 322, thereby pushing the rear end of the chassis 100 to move laterally and achieving tail swing. When the entire chassis 100 needs to be moved laterally, the lateral push cylinder 322 and the tilt cylinder 223 are adjusted simultaneously to push both ends of the chassis 100 to move laterally simultaneously, thereby achieving horizontal movement of the entire device and improving the device's adaptability to roadways.
[0061] In one possible implementation, anti-slip teeth 3211 are provided on the side of the support base plate 321 away from the chassis 100.
[0062] The anti-slip teeth 3211 help reduce the possibility of slippage between the support plate 321 and the ground during the lateral movement of the chassis 100, so as to facilitate the movement of the chassis 100.
[0063] In one possible implementation, refer to Figure 4 and Figure 5 The slide plate 323 has a slide groove, and the connecting seat 324 has a wear-resistant strip 3241 on the side near the rear support member 310. The wear-resistant strip 3241 abuts against the groove wall.
[0064] Wear-resistant strip 3241 is installed on the top plane of connecting seat 324 and contacts the groove wall of the slide. During the movement of connecting seat 324 in slide plate 323, wear on the top plane of connecting seat 324 is reduced.
[0065] In one possible implementation, there are two rear support members 310, each of which is hinged with a connecting seat 324. There are two slide plates 323 on the support base plate 321 to connect to the corresponding connecting seats 324.
[0066] By adjusting the extension length of the piston rods of the two rear support members 310, the balance of the rear end of the chassis 100 is adjusted, achieving leveling of the rear end of the chassis 100, and cooperating with the front support member 210 to straighten the machine body. Furthermore, the chassis 100 can be lifted on one side to accommodate the offset of the coal seam angle, with a maximum adaptability angle of up to 14°.
[0067] Furthermore, most of the mechanisms on the roadheader are installed at the rear end of the chassis 100, thus the rear end of the chassis 100 bears greater pressure. Both slide plates 323 are fixed to the same support base plate 321, so that the length of the support base plate 321 at the rear end of the chassis 100 is similar to the width of the chassis 100, increasing the contact area between the support base plate 321 and the ground, thereby improving the support capacity of the support base plate 321 and reducing the possibility of the support base plate 321 sinking. In addition, the rear support member 310 and the connecting seat 324 are connected by hinges, so that the support base plate 321 can be tilted to adapt to the tilting of the roadway ground caused by the deviation of the coal seam angle.
[0068] Secondly, embodiments of this application provide a roadheader, including a roadheader body and a traveling mechanism mounted on the roadheader body.
[0069] The walking mechanism in this embodiment has the same structure as the walking mechanism provided in any of the above embodiments and can bring the same or similar technical effects. It will not be described in detail here. For details, please refer to the description of the above embodiments.
[0070] This application provides a walking device and a roadheader. The walking device has a front support assembly 200 at the front end of the chassis 100. The front support member 210 in the front support assembly 200 extends a piston rod to abut against the roadway ground, thereby lifting the front end of the tracked walking mechanism 110 mounted on the chassis 100 to detach from the ground. At the same time, a rear support assembly 300 is provided at the rear end of the chassis 100. The rear support member 310 in the rear support assembly 300 extends a piston rod to abut against the roadway ground, thereby lifting the rear end of the chassis 100 so that the tracked walking mechanism 110 detaches from the ground. This avoids the possibility of the tracks sinking to the bottom due to the large pressure generated during the operation of the roadheader, thus facilitating the continuous operation of the roadheader.
[0071] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.
Claims
1. A walking device, characterized in that, include: A chassis (100) is provided with a tracked walking mechanism (110); A front support assembly (200) includes a front support member (210) disposed on the chassis (100). The front support member (210) is used to abut against the support surface of the roadway so that the front end of the tracked walking mechanism (110) disengages from the support surface. The rear support assembly (300) includes a rear support member (310) disposed on the chassis (100) and is used to abut against the support surface so that the rear end of the tracked walking mechanism (110) disengages from the support surface.
2. The walking device according to claim 1, characterized in that, The front support assembly (200) further includes a first adjustment member (220), which is disposed on the chassis (100) for adjusting the lateral position of the front end of the chassis (100).
3. The walking device according to claim 2, characterized in that, The first adjusting member (220) includes a support slide (221), a sliding seat (222), and an tilting cylinder (223), wherein the front support member (210) is a support cylinder; The chassis (100) is provided with a first sleeve (120), which is sleeved on the front support (210). The sliding seat (222) is hinged to the piston rod of the front support (210). The sliding seat (222) is slidably connected to the support slide (221). One end of the tilting cylinder (223) is hinged to the sliding seat (222), and the other end is hinged to the first sleeve (120). The support slide (221) is used to abut against the roadway ground. When the support slide (221) comes into contact with the roadway ground, the tilting cylinder (223) pushes the first sleeve (120) together with the sliding seat (222) to slide on the support slide (221) to push the front end of the chassis (100) to move laterally.
4. The walking device according to claim 1, characterized in that, There are two front support members (210), and the two front support members (210) are symmetrically arranged at the front end of the chassis (100).
5. The walking device according to any one of claims 1-4, characterized in that, The rear support assembly (300) further includes a second adjustment member (320), which is disposed on the chassis (100) for adjusting the lateral position of the rear end of the chassis (100).
6. The walking device according to claim 5, characterized in that, The second adjusting member (320) includes a supporting base plate (321), a transverse pushing cylinder (322), a slide plate (323), and a connecting seat (324), and the rear support member (310) is a supporting cylinder; The slide plate (323) is mounted on the support base plate (321), which is used to abut against the roadway floor. The connecting seat (324) is hinged to the piston rod of the rear support member (310) and slidably connected to the slide plate (323). One end of the transverse pushing cylinder (322) is hinged to the chassis (100), and the other end is hinged to the support base plate (321). When the supporting base plate (321) comes into contact with the roadway ground, the lateral pushing cylinder (322) pushes the chassis (100) together with the connecting seat (324) to slide on the slide plate (323) to push the rear end of the chassis (100) to move laterally.
7. The walking device according to claim 6, characterized in that, The support base plate (321) is provided with anti-slip teeth (3211) on the side away from the chassis (100).
8. The walking device according to claim 6, characterized in that, The slide plate (323) is provided with a slide groove, and the connecting seat (324) is provided with a wear-resistant strip (3241) on the side near the rear support member (310), and the wear-resistant strip (3241) abuts against the groove wall of the slide groove.
9. The walking device according to claim 6, characterized in that, Two rear support members (310) are provided, and each of the two rear support members (310) is hinged with a connecting seat (324). Two slide plates (323) are provided on the support base plate (321) to connect to the corresponding connecting seats (324).
10. A roadheader, characterized in that, It includes a roadheader body and a traveling mechanism as described in any one of claims 1-9, which is mounted on the roadheader body.