CN115787763A - Groove milling device and double-wheel groove milling machine - Google Patents

Abstract

The application provides a milling flutes device and double round slot milling machine. Wherein, milling flutes device includes: a tool holder; the two milling wheels are arranged on the tool rest; and the first vibration damper comprises a base body, the base body is connected to the mounting surface of the cutter frame, the base body is provided with a damping hole, the damping hole penetrates through the base body along the thickness direction of the base body, the base body has a first state, when the base body is in the first state, the base body is located at a first position, and the surface of the base body in the thickness direction is intersected with the mounting surface of the cutter frame, so that fluid in a groove milled by the milling wheel can flow through the damping hole, wherein the mounting surface of the cutter frame is the surface of the cutter frame used for being connected with the base body. Therefore, the vibration of the tool rest can be reduced, and the performance of the double-wheel slot milling machine is improved.

Description

Groove milling device and double-wheel groove milling machine

Technical Field

The application relates to the technical field of construction machinery, in particular to a groove milling device and a double-wheel groove milling machine.

Background

A double-wheel slot milling machine is engineering equipment for underground diaphragm wall construction, and mainly utilizes a milling wheel arranged on a tool rest to mill broken rocks and soil.

In the actual work process, the double round slot milling machine can produce great vibration, and corresponding vibration is transmitted to the cutter frame through the milling wheel, so that the cutter frame can vibrate violently, and the performance of the double round slot milling machine is influenced.

Disclosure of Invention

The application aims at providing a slot milling device and a double-wheel slot milling machine so as to improve the performance of the double-wheel slot milling machine.

In order to achieve the above object, the present application provides a groove milling device, including:

a tool holder;

the two milling wheels are arranged on the tool rest; and

the first vibration reduction device comprises a base body, wherein the base body is connected to the mounting surface of the cutter rest, a damping hole is formed in the base body, the damping hole penetrates through the base body along the thickness direction of the base body, the base body has a first state, when the base body is in the first state, the base body is located at a first position, the surface of the base body in the thickness direction is intersected with the mounting surface of the cutter rest, fluid in a groove milled by the milling wheel can flow through the damping hole, and the mounting surface of the cutter rest is used for being connected with the base body.

In some embodiments, the openings at two ends of the damping hole are respectively a first opening and a second opening, and the first opening and the second opening are arranged in a staggered manner in the thickness direction of the base body.

In some embodiments, the damping hole includes a first hole section, a second hole section, and a third hole section, the first hole section, the second hole section, and the third hole section are sequentially communicated, the first opening and the second opening are respectively located on the first hole section and the third hole section, and a longitudinal section width of the second hole section is greater than a longitudinal section width of the first hole section and the third hole section.

In some embodiments, the second bore section is connected in an L-shape with both the first bore section and the third bore section.

In some embodiments, the thickness direction surface of the base body is perpendicular to the mounting surface of the tool holder in the first position.

In some embodiments, the first vibration damping device includes an elastic member disposed at an edge of the base.

In some embodiments, the groove milling device comprises two first damping devices, which are arranged on opposite sides of the tool holder.

In some embodiments, the mounting surface is perpendicular to the axial direction of the cutterhead.

In some embodiments, the base is rotatably coupled to the mounting surface of the tool holder such that the base is rotatable between a first position and a second position in which a thickness direction surface of the base is parallel to the mounting surface of the tool holder.

In some embodiments, in the second position, a thickness-wise surface of the base contacts a mounting surface of the toolholder.

In some embodiments, the groove milling device includes a drive mechanism drivingly coupled to the base for driving rotation of the base between the first position and the second position.

In some embodiments, the drive mechanism comprises a drive cylinder.

In some embodiments, the grooving apparatus includes a support beam disposed on the tool holder and having a support surface remote from the base relative to the mounting surface of the tool holder, the drive cylinder being connected at its ends to the base and the support surface, respectively.

In some embodiments, the base includes a first plate and a second plate, the first plate and the second plate being stacked together, the damping hole extending through the first plate and the second plate, the base being connected to the tool holder through the second plate, the first plate and the second plate being removably connected.

In some embodiments, the first plate is slidably coupled to the second plate such that the first plate can unblock the portion of the orifice located on the second plate by sliding from an overlapping position to a staggered position relative to the second plate.

In some embodiments, the first vibration damping device includes a drive mechanism drivingly connected to the first plate to drive the first plate to slide from the overlapping position to the offset position relative to the second plate.

In some embodiments, the first plate slides from an overlapping position to a staggered position relative to the second plate when the base is in the first position.

In some embodiments, the first vibration damping device includes a support for supporting the second plate during sliding movement of the first plate relative to the second plate.

In some embodiments, the support is removably connected to the second plate.

In some embodiments, the support is also removably connected to the blade holder.

In some embodiments, the support connects the second plate and the blade holder in a triangular configuration.

In some embodiments, the first vibration damping device includes two supports for supporting opposite sides of the base.

In some embodiments, the tool holder is provided with a suspension connection for connection with a suspension device of a two-wheel slot milling machine, the slot milling machine including a second vibration damping device disposed between the suspension connection and the tool holder.

In some embodiments, the tool holder is provided with a mounting hole, the suspension connecting member is inserted into the mounting hole, the second damping device is sleeved outside the suspension connecting member and comprises a first damping member and a second damping member, the first damping member is positioned on a first side of the mounting hole, the second damping member comprises a first damping portion and a second damping portion, the first damping portion is positioned on a second side of the mounting hole opposite to the first side, and the second damping portion is arranged on the first damping portion and extends into the mounting hole.

In addition, the double round slotter that this application provided includes the milling flutes device of any embodiment of this application.

The first vibration reduction device can reduce the vibration of the tool rest and improve the performance of the double-wheel slot milling machine based on the interaction between the damping hole and fluid in a slot milled by the milling wheel.

Further features of the present application and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which is to be read in connection with the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural view of a groove milling device in a first state of a base body according to an embodiment of the present application.

FIG. 2 is a top view of a substrate in an embodiment of the present application.

Fig. 3 isbase:Sub>A sectional viewbase:Sub>A-base:Sub>A of fig. 2.

Fig. 4 is a perspective view of a first plate in an embodiment of the present application.

Fig. 5 is a perspective view of a second plate in an embodiment of the present application.

Fig. 6 is a schematic structural view of the groove milling device in the second state of the base body in the embodiment of the application.

Fig. 7 is a schematic structural view of the groove milling device in the embodiment of the present application when the base is in the third state.

Fig. 8 shows a partial structural schematic view of the groove milling device at the second vibration damping device in the embodiment of the present application.

Fig. 9 is a sectional view B-B of fig. 8.

Description of reference numerals:

10. a groove milling device;

1. a tool holder; 11. a first end; 12. a second end; 13. a mounting surface; 14. mounting holes; 15. a binaural ear plate; 16. A first support; 17. A second support;

2. milling a wheel; 21. Milling teeth;

3. a first vibration damping device; 31. a substrate; 311. a first plate; 312. a second plate; 313. a damping hole; 314. a first bore section; 315. a second bore section; 316. a third bore section; 317. a chute; 318. connecting holes; 31a, a first opening; 31b, a second opening; 32. a single-ear plate; 33. an elastic member; 34. a drive mechanism; 341. a driving cylinder; 35. a connecting seat; 36. a mounting seat;

4. a support beam; 41. a support portion; 42. a support surface; 43. a supporting base; 44. a connecting portion;

5. a support member;

6. a support plate; 61. a pipe passing hole;

7. a suspension connection; 71. a cylinder; 72. a boss; 73. a hanging hole;

8. a second vibration damping device; 81. a first damping member; 82. a second damping member; 821. a first vibration damping portion; 822. a second vibration damping portion; 83. a sleeve;

92. a connecting member; 93. a fixing member; 931. a notch; 94. a gasket; 95. an anti-loosening element;

x, a first direction; y, a second direction; z, third direction.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without any inventive step, are within the scope of the present disclosure.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In the description of the present application, it should be understood that the terms "first," "second," and the like are used for limiting the components, and are used only for the convenience of distinguishing the corresponding components, and if not otherwise stated, the above terms do not have special meanings, and therefore, should not be construed as limiting the scope of the present application.

In addition, the technical features mentioned in the different embodiments of the present application described below may be combined with each other as long as they do not conflict with each other.

The underground continuous wall is a continuous wall constructed below the ground for supporting the load of a building, intercepting water and preventing seepage or retaining soil.

The double-wheel slot milling machine is important engineering equipment for carrying out construction operation of the underground diaphragm wall, and has the advantages of high slot forming efficiency, regular slot shape, wide range of stratum geology adaptation and the like, so that the double-wheel slot milling machine is widely applied.

The grooving principle of the double-wheel groove milling machine is that a milling wheel motor transmits power to a milling wheel speed reducer to drive two milling wheels arranged on a tool rest to rotate at low speed in opposite directions so as to mill and crush soil and rocks and form grooves. In operation of a two-wheel slot milling machine, the slots milled by the milling wheels are typically filled with a fluid (including mud) so that the milled rock slag is discharged with the fluid via a slag suction port located between the two milling wheels to a ground mud station for centralized slag removal and screening. To avoid the mud being pumped out of the tank, the tank is usually replenished with fluid continuously during operation.

In the milling and crushing process, particularly when hard rock is milled, the milling wheel can generate large vibration, and the corresponding vibration is transmitted to the tool rest through the milling wheel and the milling wheel speed reducer, so that the tool rest can vibrate violently. Because the tool rest is usually provided with the heavy parts (a general name of key parts and heavy parts) such as a slurry pump, a control box and the like, the tool rest vibrates violently, the heavy parts such as the slurry pump, the control box and the like arranged on the tool rest vibrate violently, the fatigue life of the corresponding parts is reduced, and the reliability of the double-wheel slot milling machine is influenced. Moreover, the tool rest is connected with the main machine of the double-wheel slot milling machine through the suspension device of the double-wheel slot milling machine, so that the vibration of the tool rest can be transmitted to the main machine through the suspension device, the vibration of the main machine is aggravated, and the operation comfort of the double-wheel slot milling machine is influenced.

Therefore, the vibration of the tool rest can reduce the structural reliability and the operation comfort of the double-wheel slot milling machine and influence the performance of the double-wheel slot milling machine. Therefore, the tool rest is subjected to vibration reduction, and the tool rest has important significance.

In the related art, some measures have been taken to reduce the vibration of the tool holder, but these measures basically rely on elastic members such as rubber members or springs for damping vibration, and the elastic members such as rubber members or springs are prone to failure, so that the damping mode is poor in reliability, and the damping mode also easily affects the acting force between the milling teeth on the milling wheel and rock soil, so that the milling efficiency is reduced.

Accordingly, there is a need to provide a more efficient means of damping tool holders.

In view of the above, the present application provides a groove milling device.

Fig. 1-9 show an exemplary structure of the groove milling device of the present application.

Referring to fig. 1 to 9, the present application provides a slot milling apparatus 10 including a tool holder 1, two milling wheels 2, and a first damping device 3. The two milling wheels 2 and the first vibration damper 3 are arranged on the tool rest 1. The milling wheel 2 is provided with milling teeth 21 for milling and crushing geological structures such as rocks and soil. The first damping device 3 is used to damp the tool holder 1. The first vibration damping device 3 comprises a base body 31, the base body 31 is connected to the mounting surface 13 of the tool holder 1, the base body 31 is provided with a damping hole 313, the damping hole 313 penetrates through the base body 31 along the thickness direction of the base body 31, the base body 31 has a first state, in the first state, the base body 31 is located at a first position, and the surface of the base body 31 in the thickness direction intersects with the mounting surface 13 of the tool holder 1, so that fluid in a groove milled by the milling wheel 2 can flow through the damping hole 313. The mounting surface 13 of the tool holder 1 is the surface of the tool holder 1 for connection to the main body 31.

In the above solution, the first damping device 3 may damp vibrations by means of the interaction of the body 31 with the fluid in the grooves milled by the cutterhead 2. The fluid in the groove milled by the milling wheel 2 is mainly slurry and has certain viscous characteristic, and the corresponding fluid flows through the damping hole 313, so that the motion resistance of the tool rest 1 can be increased, and the vibration reduction effect is further realized. In the actual working process, most or even all of the tool rest 1 is immersed in the fluid in the groove milled by the milling wheel 2, so that the base body 31 with the damping hole 313 is arranged on the tool rest 1, the fluid in the groove milled by the milling wheel 2 can flow through the damping hole 313 in the milling and crushing process, and the vibration of the tool rest 1 is reduced by utilizing the damping effect of the damping hole 313 on the fluid.

Because the first vibration damping device 3 can reduce the vibration of the tool rest 1, the vibration of parts arranged on the tool rest 1, particularly heavy parts such as a slurry pump, a control box and the like, can be reduced, the risk of fatigue damage of the corresponding parts is reduced, the fatigue life of the parts on the tool rest 1 is further prolonged, and the reliability of the double-wheel slot milling machine is improved. Meanwhile, the first vibration damping device 3 is used for damping vibration of the tool rest 1, vibration transmission from the tool rest 1 to the suspension device and the main machine is reduced, and the operation comfort of the double-wheel slot milling machine is improved.

Furthermore, since the first vibration damping device 3 does not rely on an elastic member such as a rubber or a spring to damp vibration, but instead relies on the interaction between the base 31 with the damping holes 313 and the fluid in the grooves milled in the cutter wheel 2 to damp vibration, it is possible to prevent the influence of the failure of the elastic member such as a rubber or a spring on the vibration damping effect and the vibration damping reliability, and to prevent the influence of the elastic member such as a rubber or a spring on the milling efficiency due to the influence of the force acting between the teeth 21 milled in the cutter wheel 2 and the rock soil.

It can be seen that the first vibration damper 3 can effectively and reliably reduce the vibration of the tool rest 1, has small influence on the normal milling and crushing process, is favorable for improving the reliability, the operation comfort and the milling efficiency of the double-wheel slot milling machine, and realizes the effective improvement on the performance of the double-wheel slot milling machine.

In order to further improve the vibration damping effect, referring to fig. 2 to 5, in some embodiments, the two end openings of the damping hole 313 are a first opening 31a and a second opening 31b, respectively, and the first opening 31a and the second opening 31b are arranged in a staggered manner in the thickness direction of the base body 31. At this time, the openings at both ends of the orifice 313, i.e., the first opening 31a and the second opening 31b, are not opposed to each other, or are not collinear, in the thickness direction of the base 31.

Since the first opening 31a and the second opening 31b are not opposed to each other in the thickness direction of the base body 31, and the resistance when the fluid flows through the orifice 313 is larger when they are offset from each other, as compared with the case where the first opening 31a and the second opening 31b are opposed to each other in the thickness direction of the base body 31, configuring the orifice 313 such that the first opening 31a and the second opening 31b thereof are offset from each other in the thickness direction of the base body 31 is advantageous for strengthening the damping action of the orifice 313 on the fluid, and the vibration damping effect can be further improved, so that the vibration of the tool holder 1 is further reduced.

Specifically, referring to fig. 3, in some embodiments, the damping bore 313 includes a first bore section 314, a second bore section 315, and a third bore section 316, the first, second, and third bore sections 314, 315, 316 being in communication in series, the first and second openings 31a, 31b being located on the first and third bore sections 314, 316, respectively, the second bore section 315 having a longitudinal cross-sectional width greater than the longitudinal cross-sectional widths of the first and third bore sections 314, 316.

Because the second hole section 315 is connected between the first hole section 314 and the third hole section 316, and the longitudinal section width of the second hole section 315 is greater than the longitudinal section widths of the first hole section 314 and the third hole section 316, the first opening 31a on the first hole section 314 and the second opening 31b on the third hole section 316 are not aligned in the thickness direction of the base 31, and are staggered with each other, and the damping holes 313 are correspondingly arranged not straight holes but bent holes, so that the fluid flows in a zigzag manner in the damping holes 313, the resistance of the fluid flowing through the damping holes 313 can be further increased, the vibration of the tool holder 1 can be further effectively and rapidly damped, the damping effect is improved, and the damping efficiency is improved.

The sidewalls of the first hole section 314, the second hole section 315, and the third hole section 316 may be straight surfaces or curved surfaces, and the depth directions of the first hole section 314, the second hole section 315, and the third hole section 316 may be parallel to the thickness direction of the base 31 or may be inclined with respect to the thickness direction of the base 31.

Illustratively, referring to fig. 3, in some embodiments, the second bore section 315 is connected in an L-shape with both the first bore section 314 and the third bore section 316. At this time, the damping hole 313 has a simple structure, and a bent flow channel for deflecting the fluid twice can be formed, so that the resistance of the fluid flowing through the substrate 31 can be effectively increased, and a better vibration damping effect can be realized.

In the embodiments described above, when the base body 31 is in the first position, the surface in the thickness direction intersects the mounting surface 13 of the tool holder 1 for attachment of the base body 31, so that fluid in the milled grooves flows through the damping holes 313 during milling and crushing. The surface of the base 31 in the thickness direction intersects the mounting surface 13 of the tool holder 1, and means that the surface of the base 31 in the thickness direction is not parallel to the mounting surface 13 of the tool holder 1, but is inclined relative to or perpendicular to each other. For example, referring to fig. 1, in some embodiments, the thickness direction surface of the base body 31 is perpendicular to the mounting surface 13 of the tool holder 1 in the first position, so that the base body 31 in the first position, which has the thickness direction surface perpendicular to the up-down direction, can better receive the fluid flowing from the top to the bottom under the action of gravity during the milling and crushing processes, so that the fluid can more fully flow through the damping holes 313, and therefore, a better vibration damping effect can be achieved.

Since the base body 31 in the first position, immersed in the fluid in the milled grooves during the milling and breaking process, may collide with the groove walls of the grooves milled by the cutterhead 2 to generate impacts, in order to further solve the problem, referring to fig. 1-3, in some embodiments the first damping means 3 comprises an elastic element 33, the elastic element 33 being arranged at the edge of the base body 31. In this way, the base 31 can be brought into contact with the groove wall of the groove milled by the cutter wheel 2 via the elastic member 33, so that the collision impact between the base 31 and the groove wall of the groove milled by the cutter wheel 2 when the tool rest 1 is shaken or the like can be reduced, and the risk of deformation or damage of the base 31 can be reduced.

The elastic members 33 may be provided on all the peripheral edges of the base 31, or the elastic members 33 may be provided only on part of the edges of the base 31. For example, referring to fig. 1-3, in some embodiments, the resilient member 33 is disposed on an edge of the base 31 opposite the end connected to the tool holder 1. Therefore, the structure can be simplified and the cost can be saved while the collision impact is reduced to a certain extent.

In the foregoing embodiments, the mounting surface 13 of the tool holder 1 may be a surface of the tool holder 1 parallel to the axial direction of the cutterhead 2, or may be a surface of the tool holder 1 perpendicular to the axial direction of the cutterhead 2. Wherein, referring to fig. 1, when the mounting surface 13 is perpendicular to the axial direction of the milling wheel 2, the fluid in the milled groove can more fully flow through the damping hole 313 during the milling process, thereby facilitating better vibration damping effect.

In addition, in the foregoing embodiments, the number of the first vibration damping devices 3 may be one, or at least two. By way of example, referring to fig. 1, in some embodiments, the slot milling device 10 includes two first vibration reduction devices 3, and the two first vibration reduction devices 3 are disposed on opposite sides of the tool holder 1, so that vibration of the tool holder 1 can be more effectively reduced, reliability and operational comfort of the double-wheel slot milling machine can be improved, and performance of the double-wheel slot milling machine can be improved.

As an example of the base 31 in each of the foregoing embodiments, the base 31 is of an integral structure or a separate structure.

For example, referring to fig. 1-6, in some embodiments, the base 31 includes a first plate 311 and a second plate 312, the first plate 311 is stacked with the second plate 312, the dampening holes 313 extend through the first plate 311 and the second plate 312, the base 31 is connected to the tool holder 1 via the second plate 312, and the first plate 311 and the second plate 312 are removably connected. At this time, the base 31 has a split structure.

Since the first plate 311 and the second plate 312 stacked together of the base 31 are detachably attached, the first plate 311 and the second plate 312 can be separated (completely separated or partially separated) at the time of cleaning or maintenance, thereby facilitating quick cleaning and maintenance of the base 31, which is particularly effective when the orifice 313 is a non-through orifice. Because when the damping hole 313 is a non-through hole, the difficulty of cleaning the damping hole 313 is high, and the first plate 311 and the second plate 312 are detachably arranged, the first plate 311 and the second plate 312 can be separated, and the parts of the damping hole 313 on the first plate 311 and the second plate 312 can be respectively cleaned, so that the difficulty of cleaning the damping hole 313 can be effectively reduced, and the cleaning efficiency and the cleaning thoroughness can be improved.

2-6, in some embodiments, first plate 311 is slidably coupled to second plate 312 such that first plate 311 may unblock a portion of dampening hole 313 on second plate 312 by sliding from an overlapping position to a misaligned position relative to second plate 312.

The arrangement is such that the first plate 311 and the second plate 312 are detachable from each other and the first plate 311 is slidable relative to the second plate 312 between an overlapping position and a staggered position. In the overlapping position, the first plate 311 and the second plate 312 are laminated facing each other, and the part of the damping hole 313 located on the first plate 311 (for example, the first hole section 314 shown in fig. 3) and the part of the damping hole 313 located on the second plate 312 (for example, the second hole section 315 and the third hole section 316 shown in fig. 3) are aligned and communicated, so that the fluid in the milled groove can smoothly pass through to damp vibration. When the damping holes are located at the staggered positions, the first plate 311 and the second plate 312 are not directly opposite to each other, but are staggered, so, referring to fig. 6, the first plate 311 can no longer shield the parts of the damping holes 313 located on the second plate 312, and the second plate 312 can also not shield the parts of the damping holes 313 located on the first plate 311, and the parts of the damping holes 313 located on the first plate 311 and the second plate 312 can be exposed and not shielded, so that the parts of the damping holes 313 located on the first plate 311 and the second plate 312 can be conveniently cleaned and maintained respectively, and further the cleaning and the maintenance of the base 31 can be completed quickly and thoroughly.

Moreover, based on the above arrangement, when cleaning and maintenance are required, referring to fig. 6, after the first plate 311 slides to the staggered position, the connection with the second plate 312 can still be maintained, and the first plate 311 does not need to be completely separated from the second plate 312, so that after cleaning or maintenance is finished, the first plate 311 and the second plate 312 do not need to be reassembled, and therefore, the operation is simplified, and the first vibration damping device 3 can be quickly put into the next milling and crushing process after cleaning and maintenance.

It can be seen that, by arranging the first plate 311 to be slidable between the overlapping position and the staggered position, the cleaning and maintenance process of the base 31 is simplified, and the adaptability of the base 31 to different requirements such as milling vibration reduction and cleaning maintenance is enhanced.

As mentioned earlier, the state in which the fluid in the milled grooves flows through the orifice 313 during the milling vibration damping process may be referred to as a first state of the base body 31; for the sake of convenience of distinction, the first plate 311 and the second plate 312 of the base 31 are separated during the cleaning and maintenance process, and may be referred to as a second state of the base 31.

As previously mentioned, in the first state, the substrate 31 is in the first position; while in the second state, the substrate 31 may be in the first position or in another position. For example, referring to fig. 6, in some embodiments, the first plate 311 slides from an overlapping position to a staggered position relative to the second plate 312 when the base 31 is in the first position. In this case, in the second state, the base body 31 is located at the first position, that is, in both the first state corresponding to the milling vibration reduction and the second state corresponding to the cleaning maintenance, the base body 31 is located at the first position, and the difference is that in the first state, the first plate 311 and the second plate 312 of the base body 31 face each other in the vertical direction, and in the second state, the first plate 311 and the second plate 312 of the base body 31 are offset or separated.

Configuring the base body 31 in the first position and in the second position facilitates a simplified use of the slot-milling device 10. Moreover, in the case where the first position is a position where the thickness direction surface of the base 31 is perpendicular to the mounting surface 13, the second state is also completed in the first position, and also allows the thickness direction surface of the base 31 to be perpendicular to the up-down direction during cleaning maintenance, which makes it easier to clean and maintain the base 31, particularly the damping holes 313 on the base 31.

In the embodiment in which the base 31 is switched to the second state by the sliding movement of the first plate 311, the sliding movement of the first plate 311 may be performed manually or automatically.

To achieve the automatic sliding of the first plate 311, in some embodiments, referring to fig. 6, the first vibration damping device 3 includes a drive mechanism 34, the drive mechanism 34 being in driving connection with the first plate 311 to drive the first plate 311 to slide from the overlapping position to the staggered position relative to the second plate 312. Therefore, the first plate 311 can automatically slide between the overlapping position and the offset position under the driving of the driving mechanism 34, which is time-saving, labor-saving and efficient.

The drive mechanism 34 may have various configurations. For example, referring to fig. 6, in some embodiments, the drive mechanism 34 includes a drive cylinder 341 (e.g., a cylinder, an air cylinder, or an electric cylinder). In this case, the driving mechanism 34 is a telescopic driving mechanism, and can drive the first plate 311 to slide between the overlapping position and the offset position by telescopic movement, which is simple and convenient.

When the slot milling device 10 includes at least two first vibration dampers 3, different first vibration dampers 3 may be respectively provided with the driving mechanism 34 to respectively drive different first plates 311 to slide, or different first vibration dampers 3 may share the same driving mechanism 34 to drive different first plates 311 to slide by the same driving mechanism 34.

In the foregoing embodiments, in order to further facilitate the sliding of the first plate 311, referring to fig. 6, the first vibration damping device 3 may further include a support 5, and the support 5 is configured to support the second plate 312 during the sliding of the first plate 311 with respect to the second plate 312.

Because in the sliding process of the first plate 311, the second plate 312 is supported by the support member 5, and the support member 5 can limit the position of the second plate 312 to prevent the second plate 312 from shifting, the sliding of the first plate 311 between the overlapping position and the staggered position is more conveniently realized, so that the base body 31 is more conveniently switched between different states. In particular, when the sliding of the first plate 311 is performed when the base 31 is in the first position, and the first plate 311 slides under the driving of the driving mechanism 34, the second plate 312 is supported by the support member 5, and the second plate 312 can be prevented from being collapsed during the sliding of the first plate 311 from the overlapping position to the staggered position by the driving mechanism 34, and therefore, the cleaning and maintenance process can be more conveniently performed.

Moreover, the supporting member 5 is also configured to support the second plate 312 during the cleaning process of the substrate, so that the substrate 31 can better bear the impact force of the cleaning solution and is not washed away by the cleaning solution, thereby facilitating the cleaning process.

The structural form of the support 5 can be varied. For example, in some embodiments, the supporting member 5 is a pallet (not shown), which is fixed on the mounting surface 13 of the tool holder 1 and holds the second plate 312 when the base 31 is in the first position, so that the pallet can support the second plate 312 during the sliding of the first plate 311. For another example, referring to fig. 6, in some embodiments, the support member 5 is connected to the second plate 312 and the tool holder 1 in a triangular shape, so that the triangular stability can be utilized to achieve a more stable support for the second plate 312.

In addition, the manner of bonding between the support 5 and the second plate 312 may be varied, for example, the two may be only in contact, not connected; for another example, the support member 5 and the second plate 312 may be connected to each other, and in the case where the support member 5 and the second plate 312 are connected to each other, the connection between the support member 5 and the second plate 312 may be a detachable connection or a non-detachable connection.

Here, when the supporting member 5 is detachably connected to the second plate 312, the supporting member 5 may be connected to the second plate 312 only when the first plate 311 needs to slide, and in other cases, for example, in a case where the base 31 needs to be integrally detached from the tool holder 1, or in a case where the base 31 needs to be moved from the first position to another position (for example, a second position which will be mentioned below), the supporting member 5 is detached from the second plate 312, so that the restriction of the supporting member 5 on the second plate 312 in the corresponding case is released, and the base 31 is conveniently integrally displaced.

It can be seen that the detachable structure between the supporting member 5 and the second plate 312 is beneficial to improve the working flexibility of the base 31, so as to meet different use requirements.

In order to prevent the support 5 detached from the second plate 312 from being lost in the case of a detachable connection of the support 5 to the second plate 312, see fig. 1 and 6, in some embodiments the support 5 is also detachably connected to the tool holder 1, so that, when cleaning maintenance is required, the support 5 can be detached from the tool holder 1 and the support 5 can be connected to the second plate 312, supporting the second plate 312, and, when cleaning maintenance is completed and the position of the base 31 needs to be changed in its entirety, for example when the base 31 needs to be rotated from the first position to a second position mentioned below, the support 5 can be detached from the second plate 312 and reconnected to the tool holder 1 for further access without being lost.

The base 31 in the foregoing embodiments may be configured to be always maintained at the first position, or may be configured to be movable between the first position and another position.

For example, referring to fig. 1 and 7, in some embodiments, the base 31 is rotatably coupled to the mounting surface 13 of the tool holder 1 such that the base 31 is rotatable between a first position and a second position in which a thickness-wise surface of the base 31 is parallel to the mounting surface 13 of the tool holder 1. In this way, the whole lifting of the groove milling device 10 is facilitated. Specifically, when the tool holder 1 is raised or lowered, the base 31 can be rotated from the first position to the second position, and the base 31 can be stored to prevent the base 31 from increasing the lifting resistance, so that the tool holder 1 can be conveniently lifted or lowered, and the entire groove milling device 10 can be conveniently lifted.

It can be seen that, by configuring the base 31 to be rotatable between the first position and the second position, different requirements of vibration reduction of the tool holder and lifting of the tool holder can be flexibly met, so that the groove milling device 10 not only has small vibration, but also is convenient to lift. For convenience of distinguishing the first state when the base 31 is in the first position, the second state when the base 31 is in the second position may be referred to as the third state.

The rotation of the base 31 between the first position and the second position may be performed manually or automatically. For example, referring to fig. 1-7, in some embodiments, milling device 10 includes a drive mechanism 34, and drive mechanism 34 is drivingly coupled to base 31 for driving base 31 between a first position and a second position. Thus, the base body 31 can be driven by the driving mechanism 34 to rotate automatically, and the method is simple, convenient and efficient.

As an example of a driving mechanism 34 for driving the rotation of the base 31, referring to fig. 1-7, in some embodiments, the driving mechanism 34 includes a driving cylinder 341, such that the extension and contraction of the driving cylinder 341 can be utilized to drive the rotation of the base 31 between the first position and the second position.

Also, referring to fig. 1 and 7, in some embodiments, the milling groove device 10 includes a support beam 4, the support beam 4 is disposed on the tool rest 1 and has a support surface 42, the support surface 42 is away from the base body 31 relative to the mounting surface 13 of the tool rest 1, and both ends of the driving cylinder 341 are connected to the base body 31 and the support surface 42, respectively.

Since the supporting surface 42 to which the driving cylinder 341 is connected is distant from the base body 31 with respect to the mounting surface 13 of the tool holder 1, referring to fig. 7, the driving cylinder 341 can drive the base body 31 to rotate to a position closer to the mounting surface 13 of the tool holder 1, so that in the second position, the thickness direction surface of the base body 31 can be closer to the mounting surface 13 of the tool holder 1, and even the thickness direction surface of the base body 31 can be brought into contact with the mounting surface 13 of the tool holder 1, which can further reduce the lifting resistance of the tool holder 1, facilitating the lifting and lowering of the tool holder 1.

When the groove milling device 10 includes at least two first vibration dampers 3, different first vibration dampers 3 may be respectively provided with the driving mechanism 34 to respectively drive different base bodies 31 to rotate, or different first vibration dampers 3 may share the same driving mechanism 34 to drive different base bodies 31 to rotate by the same driving mechanism 34.

In addition, in the embodiment in which the base 31 is automatically rotatable and the base 31 includes the automatically slidable movement between the overlapping position and the offset position with respect to the second plate 312, the driving mechanism 34 for driving the base 31 to rotate and the driving mechanism 34 for driving the first plate 311 to slide may be different mechanisms or the same mechanism. Among them, when the driving mechanism 34 for driving the base 31 to rotate between the first position and the second position is the same as the driving mechanism 34 for driving the first plate 311 of the base 31 to slide between the overlapping position and the offset position, the structure is simpler and the cost is lower.

As mentioned above, in the case where the tool post 1 is connected to the main machine (not shown) via the suspension device (not shown) in the double-wheel slot milling machine, the vibration of the tool post is transmitted to the main machine via the suspension device, which aggravates the vibration of the main machine and affects the operational comfort of the double-wheel slot milling machine. To address this problem, other methods than the method of damping the vibration of the tool holder 1 in the foregoing embodiments may be employed.

For example, referring to fig. 1 and 8-9, in some embodiments, the tool holder 1 is provided with a suspension connection 7, the suspension connection 7 is for connection with a suspension device (not shown) of a two-wheel slot milling machine, and the slot milling apparatus 10 includes a second vibration damping device 8, the second vibration damping device 8 being disposed between the suspension connection 7 and the tool holder 1. In this way, the second vibration damping device 8 constitutes a vibration damping device between the tool post 1 and the suspension device, and can damp the transmission of the tool post vibration to the suspension device and the main machine by damping the transmission of the tool post vibration to the suspension connecting member 7, thereby being beneficial to reducing the vibration of the suspension device and the main machine and improving the operation comfort of the double-wheel slot milling machine.

Specifically, referring to fig. 9, in some embodiments, the tool holder 1 is provided with a mounting hole 14, the suspension connector 7 is inserted into the mounting hole 14, the second vibration damping device 8 is sleeved outside the suspension connector 7 and includes a first vibration damping member 81 and a second vibration damping member 82, the first vibration damping member 81 is located on a first side of the mounting hole 14, the second vibration damping member 82 includes a first vibration damping portion 821 and a second vibration damping portion 822, the first vibration damping portion 821 is located on a second side of the mounting hole 14 opposite to the first side, and the second vibration damping portion 822 is disposed on the first vibration damping portion 821 and extends into the mounting hole 14. In this way, the second vibration damping device 8 can more effectively damp the transmission of the tool holder vibration to the suspension link 7, thereby more effectively improving the operational comfort of the double-disc slot milling machine.

The embodiment of fig. 1-9 will be further described below.

As shown in fig. 1 to 9, in this embodiment, the groove milling apparatus 10 includes a tool post 1, two milling wheels 2, a first damping device 3, a driving cylinder 341, a support beam 4, a support plate 6, a suspension link 7, a second damping device 8, a link 92, a fixing member 93, a spacer 94, and a check member 95.

As shown in fig. 1, the tool holder 1 is substantially cubic, and a rectangular hole penetrating in the thickness direction is provided in the middle in the longitudinal direction. A suspension connection 7 for connection with a suspension device and two cutterheads 2 for milling geological structures are provided at opposite ends of the tool holder 1 in the first direction X, and the axial direction of both cutterheads 2 is along the second direction Y, while the two cutterheads 2 are arranged side by side along the third direction Z. The first direction X, the second direction Y and the third direction Z are perpendicular to each other and correspond to a height direction, a thickness direction (or width direction) and a length direction of the tool holder 1, respectively. After being installed in the two-wheel slot milling machine, the first direction X, the second direction Y and the third direction Z correspond to the up-down direction, the front-back direction and the left-right direction respectively, and the side of the suspension connector 7 corresponding to the milling wheel 2 is up, and the side of the milling wheel 2 corresponding to the suspension connector 7 is down, that is, the two ends of the tool rest 1 where the suspension connector 7 and the milling wheel 2 are arranged are respectively the upper end and the lower end, in other words, the milling wheel 2 and the suspension connector 7 are respectively arranged at the lower end (indicated as the first end 11 in fig. 1) and the upper end (indicated as the second end 12 in fig. 1) of the tool rest 1.

The suspension connecting piece 7 is provided with a suspension hole 73 for connecting with a suspension device so as to realize the connection between the milling groove device 10 and the suspension device, so that the suspension device can suspend the milling groove device 10.

All be equipped with on two cutterheads 2 and mill tooth 21, and two cutterheads 2 are all rotatable for when two cutterheads 2 rotated, can utilize to mill tooth 21 and mill the breakage to rock and earth. During actual groove milling, the two milling wheels 2 rotate in opposite directions, and the milled rock slag is discharged to a ground slurry station (not shown) along with fluid in the groove through a slag suction port (not shown) and a slurry pipe (not shown) between the two milling wheels 2 for centralized slag tapping and screening.

In this embodiment the mud tube passes through the blade 6 on the tool holder 1. As shown in fig. 1, in this embodiment, the support plate 6 is provided inside the tool holder 1, and the support plate 6 is provided with a pipe passing hole 61 so that a mud pipe and a hydraulic pipe of the double-wheel slot milling machine can pass therethrough. As can be seen from fig. 1, in this embodiment the upper surface of the pallet 6 (i.e. the surface of the pallet 6 facing away from the cutterhead 2) is flush with the upper surface of the base body 31 of the first damping device 3 in the first position.

The first vibration damping means 3 is provided between both ends of the tool holder 1 in the first direction X for reducing vibration of the tool holder 1. As shown in fig. 1, in this embodiment, the first vibration damping device 3 includes a base body 31, an elastic member 33, and a support member 5. The base 31 includes a first plate 311 and a second plate 312 laminated together.

Wherein the second plate 312 is substantially rectangular and rotatably connected to the tool holder 1 for rotatable connection of the base body 31 to the tool holder 1 such that the base body 31 can be rotated between the first position and the second position. The first plate 311 is generally rectangular and is stacked on the second plate 312 and slidably coupled to the second plate 312 such that the first plate 311 can slide on the second plate 312 between an overlapping position and a staggered position.

Specifically, as shown in fig. 1, in this embodiment, two binaural ear plates 15 are provided on the end surface of the tool holder 1 in the second direction Y, while, as shown in fig. 2 to 5, one end of the second plate 312 is provided with two monaural ear plates 32, the two double-lug ear plates 15 and the two single-lug ear plates 32 are arranged at intervals along the third direction Z, the two double-lug ear plates 15 correspond to the two single-lug ear plates 32 one by one, and each single-lug ear plate 32 is inserted into the corresponding double-lug ear plate 15 and is penetrated by a pin shaft, so that the second plate 312 is hinged to the tool rest 1. In this way, the surface of the tool holder 1 in the second direction Y constitutes the mounting surface 13 of the tool holder 1 for connection with the base body 31, and the second plate 312 is rotatably connected to the mounting surface 13 such that the second plate 312 is rotatable relative to the tool holder 1 between the first position and the second position.

Meanwhile, as shown in fig. 2-5, in this embodiment, the second plate 312 is provided with a sliding slot 317, and the first plate 311 is inserted into the sliding slot 317 to achieve a sliding connection with the second plate 312. As can be seen from fig. 5, in this embodiment, the slide grooves 317 are provided at one end of the second plate 312 connected to the tool holder 1 and at both ends of the second plate 312 adjacent to the one end connected to the tool holder 1. Three sides of the first plate 311 are inserted into the sliding grooves 317 and are in sliding fit with the sliding grooves 317, so that the first plate 311 can rotate between the first position and the second position together with the second plate 312 and can slide between the overlapping position and the staggered position relative to the second plate 312.

Also, as shown in fig. 2, in this embodiment, the second plate 312 is provided with a coupling hole 318 at an end opposite to the end coupled to the tool holder 1, and the first plate 311 is also provided with a coupling hole 318 at an opposite end. When the first plate 311 is in the overlapping position, the connection holes 318 on the first plate 311 and the second plate 312 are aligned, and the connecting member 92 passes through the aligned connection holes 318 to fix the first plate 311 and the second plate 312 together, so as to prevent the first plate 311 from accidentally sliding when it is required to maintain the overlapping position. When the first plate 311 needs to slide to the staggered position, the connecting member 92 may be removed first, and then the first plate 311 may be driven to slide from the overlapped position to the staggered position.

Meanwhile, as shown in fig. 1 to 3, in this embodiment, an end of the second plate 312 opposite to the end connected to the tool holder 1 is provided with an elastic member 33. Wherein, the elastic element 33 is made of rubber material and is fixed to the end of the second plate 312 opposite to the end connected to the tool holder 1 in a vulcanization manner, which is beneficial to reduce the collision impact between the base 31 and the groove wall of the milled groove when the tool holder 1 shakes, prevent the first plate 311 and the second plate 312 from being deformed and damaged due to the corresponding collision impact, and improve the structural reliability.

In order to reduce the vibration of the tool holder 1, as shown in fig. 1 to 5, in this embodiment, the base body 31 is provided with a plurality of damping holes 313, the plurality of damping holes 313 are arranged in a matrix on the base body 31, and each damping hole 313 penetrates the base body 31 in the thickness direction of the base body 31 (i.e., the stacking direction of the first plate 311 and the second plate 312). As can be seen from fig. 2 to 5, in this embodiment, each damping hole 313 has the same structure and includes a first hole section 314, a second hole section 315, and a third hole section 316. The first hole section 314 is located on the first plate 311 and has a rectangular shape. The second and third hole sections 315 and 316 are located on the second plate 312 and are rectangular in shape. The second bore section 315 is located between the first bore section 314 and the third bore section 316, communicating the first bore section 314 and the third bore section 316. At this time, the end opening of the first hole section 314 distant from the third hole section 316 constitutes the first opening 31a of the orifice hole 313, and the end opening of the third hole section 316 distant from the first hole section 314 constitutes the second opening 31b of the orifice hole 313. Also, as shown in fig. 3, in this embodiment, the second bore section 315 has a longitudinal cross-sectional width greater than that of the first and third bore sections 314 and 316, and the second bore section 315 is perpendicularly connected to both the first and third bore sections 314 and 316 such that the second bore section 315 is connected to both the first and third bore sections 314 and 316 in an L-shape. At this time, as shown in fig. 3, the orifice 313 forms a double-bent flow path in which the first opening 31a and the second opening 31b are not opposed to each other in the thickness direction of the base 31 but are offset from each other. In this way, the damping hole 313 can allow fluid in the milled groove to flow through, and the fluid in the milled groove can experience twice baffling when flowing through the damping hole 313, so that the motion resistance of the tool holder 1 is effectively increased, and the vibration of the tool holder 1 is reduced.

In this embodiment, as shown in FIG. 1, when the base 31 is in the first position and the first plate 311 is in the overlapping position, fluid in the milled grooves flows through the damping holes 313 and the damping holes 313 damp vibrations.

As can be seen from fig. 1, 6 and 7, in this embodiment, the first position is a horizontal position perpendicular to the first direction X, and the second position is a vertical position perpendicular to the first position and parallel to the first direction X. In the first position, the plate surfaces of the first plate 311 and the second plate 312 are horizontal and perpendicular to the first direction X and the mounting surface 13, the first plate 311 is located above the second plate 312 (i.e., on the side away from the cutterhead 2), and the upper surface of the first plate 311 (i.e., the surface of the first plate 311 away from the second plate 312) is on the same plane as the upper surface of the supporting plate 6 (i.e., the surface of the supporting plate 6 away from the cutterhead 2). In the second position, the plate surfaces of the first plate 311 and the second plate 312 are both vertical and parallel to the first direction X and the mounting surface 13.

In order to automatically rotate the base body 31 between the first position and the second position, as shown in fig. 1 and 7, in this embodiment a drive cylinder 341 is drivingly connected to the first plate 311. Specifically, as can be seen from fig. 1, in this embodiment, a connecting seat 35 is provided on the first plate 311, a supporting beam 4 is provided above a connecting position of the tool rest 1 with the second plate 312, a supporting seat 43 is provided on the supporting beam 4, and a cylinder tube and a cylinder rod of the driving cylinder 341 are respectively hinged to the supporting seat 43 and the connecting seat 35, so that the driving cylinder 341 is provided on the tool rest 1 and is drivingly connected with the first plate 311, and the driving cylinder 341 can drive the base 31 to rotate between the first position and the second position around a hinge point with the tool rest 1 by stretching and contracting.

As shown in fig. 1, in this embodiment, the support beam 4 includes a support portion 41 and a connecting portion 44. Opposite ends of the support portion 41 in the third direction Z are connected to the tool holder 1 through two connecting portions 44, respectively. The supporting portion 41 is in the shape of a flat plate, and the two connecting portions 44 are bent and bent toward the side away from the base 31, so that the supporting portion 41 is not coplanar with the ends of the two connecting portions 44 connected to the tool holder 1, but is recessed toward the side away from the base 31 relative to the ends of the two connecting portions 44 connected to the tool holder 1. The support base 43 is provided on a side surface of the support portion 41 facing the mounting surface 13. In this way, the surface of the support portion 41 facing the attachment surface 13 constitutes a support surface 42 of the support beam 4 for connection to the drive cylinder 341, and as shown in fig. 1, the support surface 42 is distant from the base 31 with respect to the attachment surface 13 of the tool rest 1. This arrangement is such that, as shown in fig. 7, when the drive cylinder 341 is fully contracted and the base 31 is rotated to the second position, the base 31 is attached to the mounting surface 13, and the surface of the base 31 in the thickness direction is in contact with the mounting surface 13.

As will be understood from fig. 1, 6 and 7, in this embodiment, the driving cylinder 341 is used not only to drive the base body 31 to rotate between the first position and the second position, but also to drive the first plate 311 to slide between the overlapping position and the offset position. Specifically, in this embodiment, the driving cylinder 341 has 3 preset extensions, L1, L2, and L3, respectively, where L1< L2< L3, and when the extension of the driving cylinder 341 is L1, the base 31 is in the second position; when the extension amount of the driving cylinder 341 is L2, the base body 31 rotates to the first position, and the first plate 311 of the base body 31 is in the overlapping position; when the extension amount of the driving cylinder 341 is L3, the base 31 is still at the first position, but the first plate 311 of the base 31 is no longer at the overlapping position, but slides outward (i.e., away from the mounting surface 13) to the offset position.

In order to facilitate the sliding of the first plate 311 from the overlapping position to the staggered position by the actuating cylinder 341, in this embodiment a support 5 is provided to support the second plate 312, see fig. 1 and 6.

As shown in fig. 1 and 6, in this embodiment the support 5 is substantially rod-shaped and is removably connected to both the second plate 312 and the tool holder 1, such that the support 5 can be connected to the second plate 312 when it is desired to support the second plate 312 and to the tool holder 1 when it is not desired to support the second plate 312.

Specifically, as can be seen from fig. 1 and 6, in this embodiment, the mounting seat 36 is provided on the lower surface of the second plate 312 (i.e., the surface of the second plate 312 remote from the first plate 311), and the first support 16 and the second support 17 are provided on the tool holder 1. The first support 16 is located below the position of the second plate 312 articulated to the tool holder 1, and the second support 17 is located below the first support 16. When the second plate 312 does not need to be supported, as shown in fig. 1, two ends of the supporting member 5 are respectively connected to the first support 16 and the second support 17, so that the supporting member 5 is fixed on the knife rest 1, the supporting member 5 can be effectively prevented from being lost, and the next taking is facilitated. When it is desired to support the second plate 312, as shown in fig. 6, the end of the support member 5 connected to the second seat 17 is removed and attached to the mounting seat 36 so that the support member 5 is connected to the second plate 312 and the tool holder 1 in a triangular shape. In this manner, the support 5 can stably support the second plate 312.

As shown in fig. 1 and 6, in this embodiment, the first vibration damping device 3 includes two supporting members 5, and the two supporting members 5 are used to support opposite sides of the base body 31. Specifically, as can be seen from fig. 1 and 6, in this embodiment, the lower surface of the second plate 312 is provided with two mounting seats 36 arranged at intervals along the third direction Z, and two sets of the first support 16 and the second support 17 are correspondingly arranged at two ends of the mounting surface 13 along the third direction Z, so that any one set of the mounting seats 36, the first support 16 and the second support 17 located at two sides of the third direction Z can be detachably connected to one support 5, so that the two support 5 can support two opposite sides of the second plate 312 along the third direction Z when needed, so as to achieve a more stable supporting effect.

Referring to fig. 6, when the first plate 311 needs to slide to the staggered position, the driving cylinder 341 continues to extend to L3 by the extension amount L2, in the corresponding process, the driving cylinder 341 may apply an outward and downward thrust to the base 31, in this case, if the second plate 312 is not supported, the second plate 312 may drive the first plate 311 to rotate downward together due to the downward thrust, so that the first plate 311 smoothly reaches the staggered position, and after the second plate 312 is supported by the support member 5, the support member 5 may bear the acting force of the driving cylinder 341, restrain the second plate 312, prevent the second plate 312 from rotating downward and moving outward, so that the second plate 312 may be maintained in the horizontal first position during the process that the first plate 311 is pushed, thereby facilitating the sliding of the first plate 311 relative to the second plate 312, and the first plate 311 may smoothly slide outward on the second plate 312 to the staggered position, so that the portions of the damping holes 313 on the first plate 311 and the second plate 312 are both exposed for convenient cleaning and maintenance.

Based on the aforementioned arrangement, the base body 31 of the first vibration damping device 3 has three states, a first state satisfying the requirements for milling vibration damping, a second state satisfying the requirements for cleaning and maintenance, and a third state satisfying the requirements for tool holder lifting. These three states are shown in fig. 1, 6 and 7, respectively.

Wherein fig. 1 shows a first state. As shown in fig. 1, in the first state, the first plate 311 and the second plate 312 are fixed by the connecting member 92, the extension amount of the driving cylinder 341 is L2, the base body 31 is located at the first position, and the first plate 311 is located at the overlapping position, and the portions of the orifice 313 located on the first plate 311 and the second plate 312 are aligned and communicated. At this time, the cutterhead 2 mills and crushes rock and earth, and the base body 31 is also immersed in the fluid in the milled grooves, so that the fluid in the milled grooves can flow through the damping holes 313 in the base body 31, increasing the motion resistance of the tool holder 1 and rapidly damping the vibration of the tool holder 1. As can be seen from fig. 1, in the first state, both ends of the support 5 are connected to the first support 16 and the second support 17, respectively, without supporting the second plate 312.

Fig. 6 shows the second state. As shown in fig. 6, in the second state, the base 31 is at the first position, the connecting member 92 between the first plate 311 and the second plate 312 is detached, the extension amount of the driving cylinder 341 is L3, the first plate 311 is pushed to the staggered position, and the holes on the first plate 311 and the second plate 312 are not shielded and can be exposed, so that the cleaning and the maintenance are both convenient. In the corresponding process, before the driving cylinder 341 is extended to L3, the end of the supporting member 5 connected to the second seat 17 is removed and connected to the mounting seat 36 on the second plate 312, so that the second plate 312 is supported by the supporting member 5, and the first plate 311 can smoothly slide outward to the staggered position by the driving cylinder 341.

Fig. 7 shows a third state. As shown in fig. 7, in the third state, the first plate 311 and the second plate 312 are fixed by the connecting member 92, the extension of the driving cylinder 341 is L1, and the base 31 rotates upward to the second position and contacts with the mounting surface 13, so that resistance is small during the lifting process of the tool holder 1, and the tool holder 1 is convenient to lift.

It can be seen that the first vibration damping device 3 can effectively reduce the vibration of the tool holder 1 by utilizing the interaction between the damping hole 313 and the fluid based on the viscous characteristic of the fluid in the milled groove under the condition that the normal lifting of the tool holder 1 is not influenced, and the first vibration damping device 3 is convenient to clean and maintain.

As shown in fig. 6, in this embodiment, the slot milling device 10 includes two first vibration dampers 3, the two first vibration dampers 3 are disposed on two opposite sides of the tool holder 1, so as to achieve better vibration damping effect, and the two first vibration dampers 3 are respectively equipped with the driving cylinders 341, so that the base bodies 31 of the two first vibration dampers 3 can be independently driven to switch between different states, and different requirements can be flexibly met. As can be seen from fig. 6, the two first vibration damping devices 3 of this embodiment are attached to both side surfaces of the tool holder 1 in the second direction Y (i.e., the front and rear surfaces of the tool holder 1), and in this case, both side surfaces of the tool holder 1 in the second direction Y serve as two mounting surfaces 13, and both of the mounting surfaces 13 are perpendicular to the axial direction of the cutterhead 2.

As mentioned earlier, in this embodiment, in addition to the first vibration damping means 3, which is provided to damp vibrations of the tool holder 1, a second vibration damping means 8 is provided to reduce the transmission of vibrations from the tool holder 1 to the suspension means.

As can be seen from fig. 1, 8 and 9, in this embodiment, the second damping means 8 is provided between the tool holder 1 and the suspension connection member 7 and comprises a first damping member 81, a second damping member 82 and a sleeve 83.

Specifically, as shown in fig. 1, 8 and 9, in this embodiment, the suspension link 7 includes a cylinder 71 and a boss 72. The boss 72 is connected to an end of the cylinder 71 and projects radially outward relative to the cylinder 71, so that the suspension link 7 is substantially T-shaped as a whole. The second end 12 of the tool holder 1 is provided with a mounting hole 14. The suspension connection member 7 is inserted into the mounting hole 14 from below to above such that the boss 72 is located at the lower side of the mounting hole 14 in the tool holder 1, and the column 71 passes through the mounting hole 14 to be exposed from the upper side of the mounting hole 14. The portion of the column 71 exposed above the mounting hole 14 is provided with a fixing member 93. The fixing member 93 is screwed to the cylinder 71. The upper edge of the fixing member 93 is provided with a notch 931 and, accordingly, the cylinder 71 is provided with a through hole, and the anti-loosening member 95 passes through the notch 931 and the through hole of the cylinder 71 to prevent the fixing member 93 from loosening. The anti-loosening element 95 is shown in fig. 8 and 9, but is omitted in fig. 1. Illustratively, the check member 95 includes a pin.

The first and second damping members 81 and 82 are annular damping members, and are fitted around the outside of the cylinder 71. The first vibration damping member 81 is located on the upper side of the mounting hole 14, and a spacer 94 is disposed between the first vibration damping member and the fixing member 93 for stopping. The second vibration damper 82 includes a first vibration damper portion 821 and a second vibration damper portion 822, the first vibration damper portion 821 is connected to one end of the second vibration damper portion 822 and protrudes toward the radial outside with respect to the second vibration damper portion 822, so that the second vibration damper 82 forms a male vibration damper member. The first vibration mitigation part 821 is located at the lower side of the mounting hole 14 between the boss 72 and the top wall of the tool holder 1. The second vibration attenuating portion 822 extends into the mounting hole 14. A sleeve 83 made of a metal material is fixed between the second damping member 82 and the cylinder 71 in a vulcanization manner, and the first damping member 81 is sleeved outside the sleeve 83, so that the sleeve 83 can support the first damping member 81 and the second damping member 82, and the abrasion of the first damping member 81 and the second damping member 82 is reduced.

With the above arrangement, the first and second vibration dampers 81 and 82 can effectively damp the transmission of vibration of the tool holder 1 to the suspension link 7, so that the second vibration damping device 8 can effectively reduce the transmission of vibration from the tool holder 1 to the suspension device.

It can be seen that the first vibration damper 3 and the second vibration damper 8 fully consider the structural characteristics and the operation characteristics of the double-wheel slot milling machine, can effectively reduce the vibration of the tool rest 1 under the condition of normal work such as lifting of the tool rest and crushing of milling without being influenced, and the transmission of the vibration of the tool rest to the suspension device and the host machine, so that the working reliability of the double-wheel slot milling machine is favorably improved, the operation comfort of the double-wheel slot milling machine is improved, and the performance of the double-wheel slot milling machine is further improved.

Therefore, based on the groove milling device 10 of the previous embodiments, the present application also provides a dual-wheel groove milling machine. The two-wheel slot milling machine includes a slot milling apparatus 10. The double-wheel slot milling machine further comprises other devices such as a suspension device.

The above description is only exemplary of the present application and should not be taken as limiting the present application, and any modifications, equivalents, improvements and the like that are made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (25)

1. A slot milling apparatus (10) for a two-wheel slot milling machine, comprising:

a tool holder (1);

the two milling wheels (2) are arranged on the tool rest (1); and

the first vibration reduction device (3) comprises a base body (31), the base body (31) is connected to a mounting surface (13) of the tool rest (1), a damping hole (313) is formed in the base body (31), the damping hole (313) penetrates through the base body (31) along the thickness direction of the base body (31), the base body (31) has a first state, when the base body (31) is in the first state, the base body (31) is located at a first position, the surface of the base body (31) in the thickness direction is intersected with the mounting surface (13) of the tool rest (1), so that fluid in a groove milled by the milling wheel (2) can flow through the damping hole (313), wherein the mounting surface (13) of the tool rest (1) is used for being connected with the base body (31).

2. The slot milling apparatus (10) according to claim 1, wherein the two end openings of the orifice (313) are a first opening (31 a) and a second opening (31 b), respectively, and the first opening (31 a) and the second opening (31 b) are arranged to be staggered in a thickness direction of the base body (31).

3. The slot milling apparatus (10) of claim 2, wherein the dampening bore (313) comprises a first bore section (314), a second bore section (315), and a third bore section (316), the first bore section (314), the second bore section (315), and the third bore section (316) being in communication in sequence, the first opening (31 a) and the second opening (31 b) being located on the first bore section (314) and the third bore section (316), respectively, the second bore section (315) having a longitudinal cross-sectional width greater than the longitudinal cross-sectional width of the first bore section (314) and the third bore section (316).

4. The slot milling apparatus (10) of claim 3, wherein the second bore section (315) is connected in an L-shape with both the first bore section (314) and the third bore section (316).

5. The slot milling apparatus (10) according to claim 1, wherein a thickness-wise surface of the base body (31) is perpendicular to the mounting surface (13) of the tool holder (1) in the first position.

6. A slot-milling apparatus (10) according to claim 1, characterized in that the first damping means (3) comprises an elastic element (33), the elastic element (33) being arranged at the edge of the basic body (31).

7. The slot milling device (10) according to claim 1, characterized in that the slot milling device (10) comprises two first vibration dampening means (3), the two first vibration dampening means (3) being arranged on opposite sides of the tool holder (1).

8. The slot milling apparatus (10) according to claim 1, characterized in that the mounting surface (13) is perpendicular to the axial direction of the cutterhead (2).

9. A slot milling apparatus (10) as claimed in any one of claims 1 to 8, wherein the base body (31) is rotatably connected to the mounting surface (13) of the tool holder (1) such that the base body (31) is rotatable between the first position and a second position in which a thickness direction surface of the base body (31) is parallel to the mounting surface (13) of the tool holder (1).

10. The slot milling apparatus (10) according to claim 9, wherein a thickness-wise surface of the base body (31) is in contact with the mounting surface (13) of the tool holder (1) in the second position.

11. The slot milling apparatus (10) of claim 9, wherein the slot milling apparatus (10) comprises a drive mechanism (34), the drive mechanism (34) being drivingly connected to the base (31) for driving the base (31) in rotation between the first position and the second position.

12. The slot milling apparatus (10) of claim 11, wherein the drive mechanism (34) includes a drive cylinder (341).

13. The slot milling apparatus (10) as set forth in claim 12, characterized in that the slot milling apparatus (10) comprises a support beam (4), the support beam (4) being disposed on the tool holder (1) and having a support surface (42), the support surface (42) being remote from the base body (31) with respect to the mounting surface (13) of the tool holder (1), the drive cylinder (341) being connected at both ends to the base body (31) and the support surface (42), respectively.

14. The slot milling apparatus (10) of any one of claims 1 to 8, wherein the base body (31) comprises a first plate (311) and a second plate (312), the first plate (311) and the second plate (312) are stacked together, the orifice (313) extends through the first plate (311) and the second plate (312), the base body (31) is connected to the tool holder (1) through the second plate (312), and the first plate (311) and the second plate (312) are detachably connected.

15. Slot milling apparatus (10) according to claim 14, characterized in that the first plate (311) is slidably connected with the second plate (312) such that the first plate (311) can unblock the portion of the damping hole (313) located on the second plate (312) by sliding from an overlapping position to a staggered position with respect to the second plate (312).

16. Slot milling apparatus (10) according to claim 15, wherein the first damping device (3) comprises a drive mechanism (34), the drive mechanism (34) being in driving connection with the first plate (311) to drive the sliding of the first plate (311) relative to the second plate (312) from the overlapping position to the staggered position.

17. The slot milling apparatus (10) of claim 15, wherein the first plate (311) slides relative to the second plate (312) from the overlapping position to the offset position when the base (31) is in the first position.

18. Slot milling device (10) according to claim 15, characterized in that said first damping means (3) comprise a support (5), said support (5) being intended to support said second plate (312) during the sliding of said first plate (311) with respect to said second plate (312).

19. A slot milling apparatus (10) according to claim 18, wherein the support (5) is removably connected with the second plate (312).

20. The slot milling device (10) according to claim 19, characterized in that the support (5) is also detachably connected to the tool holder (1).

21. The slot milling apparatus (10) according to claim 18, wherein the support (5) is connected to the second plate (312) and the tool holder (1) in a triangular shape.

22. A slot milling apparatus (10) according to claim 18, wherein the first damping means (3) comprises two supports (5), the two supports (5) being adapted to support opposite sides of the basic body (31).

23. A slot milling apparatus (10) as claimed in any one of claims 1 to 8, wherein the tool holder (1) is provided with a suspension connection (7), the suspension connection (7) being adapted to be connected to a suspension of a two-wheel slot milling machine, the slot milling apparatus (10) including a second damping means (8), the second damping means (8) being arranged between the suspension connection (7) and the tool holder (1).

24. The slot milling apparatus (10) of claim 23, wherein the tool holder (1) is provided with a mounting hole (14), the suspension connector (7) is inserted into the mounting hole (14), the second damping device (8) is sleeved outside the suspension connector (7) and comprises a first damping member (81) and a second damping member (82), the first damping member (81) is located on a first side of the mounting hole (14), the second damping member (82) comprises a first damping portion (821) and a second damping portion (822), the first damping portion (821) is located on a second side of the mounting hole (14) opposite to the first side, and the second damping portion (822) is disposed on the first damping portion (821) and extends into the mounting hole (14).

25. A two-wheel slot milling machine, characterized in that it comprises a slot milling apparatus (10) according to any one of claims 1 to 24.

Images