Milling Groove Device and Double-Wheel Milling Groove Machine

Abstract

The present application provides a grooving device and a dual-wheel grooving machine. Among them, the grooving device includes: a tool holder; two milling wheels disposed on the tool holder; and a first vibration damping device including a base body. The base body is connected to the mounting surface of the tool holder, and damping holes are provided in the base body. The damping holes penetrate through the base body along the thickness direction of the base body. The base body has a first state. When in the first state, the base body is located at a first position, and the surfaces in the thickness direction of the base body intersect with the mounting surface of the tool holder, so that the fluid in the groove milled by the milling wheel can flow through the damping holes. Herein, the mounting surface of the tool holder is the surface of the tool holder for connecting with the base body. In this way, the vibration of the tool holder can be reduced, and the performance of the dual-wheel grooving machine can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of construction machinery, and particularly relates to a grooving device and a double-wheel grooving machine. Background Art

[0002] A double-wheel grooving machine is an engineering device for constructing diaphragm walls, and mainly relies on the milling wheels arranged on the tool holder to mill and break rocks and soils.

[0003] During the actual working process, the double-wheel grooving machine will generate large vibrations, and the corresponding vibrations are transmitted to the tool holder through the milling wheels, which will cause severe vibrations of the tool holder and affect the performance of the double-wheel grooving machine. Summary of the Invention

[0004] The present application aims to provide a grooving device and a double-wheel grooving machine to improve the performance of the double-wheel grooving machine.

[0005] To achieve the above object, the grooving device provided by the present application includes:

[0006] A tool holder;

[0007] Two milling wheels, arranged on the tool holder; and

[0008] A first vibration damping device, including a base body, the base body is connected to the mounting surface of the tool holder, and damping holes are provided on the base body, the damping holes penetrate through the base body along the thickness direction of the base body, the base body has a first state, when in the first state, the base body is located at a first position, and the surface in the thickness direction of the base body intersects with the mounting surface of the tool holder, so that the fluid in the groove milled by the milling wheel can flow through the damping holes, wherein the mounting surface of the tool holder is the surface of the tool holder for connecting with the base body.

[0009] In some embodiments, the 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 staggeredly in the thickness direction of the base body.

[0010] 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 communicated in sequence, the first opening and the second opening are respectively located on the first hole section and the third hole section, and the longitudinal section width of the second hole section is greater than the longitudinal section widths of the first hole section and the third hole section.

[0011] In some embodiments, the second hole section is connected to both the first hole section and the third hole section to form an L shape.

[0012] In some embodiments, when in the first position, the surface in the thickness direction of the base body is perpendicular to the mounting surface of the tool holder.

[0013] In some embodiments, the first vibration damping device includes an elastic member, and the elastic member is arranged at the edge of the base body.

[0014] In some embodiments, the grooving device includes two first vibration damping devices, which are arranged on opposite sides of the tool holder.

[0015] In some embodiments, the mounting surface is perpendicular to the axial direction of the milling wheel.

[0016] In some embodiments, the base body is rotatably connected to the mounting surface of the tool holder, such that the base body can rotate between a first position and a second position. When in the second position, the surface in the thickness direction of the base body is parallel to the mounting surface of the tool holder.

[0017] In some embodiments, when in the second position, the surface in the thickness direction of the base body contacts the mounting surface of the tool holder.

[0018] In some embodiments, the grooving device includes a driving mechanism, which is drivingly connected to the base body to drive the base body to rotate between the first position and the second position.

[0019] In some embodiments, the driving mechanism includes a driving cylinder.

[0020] In some embodiments, the grooving device includes a support beam, which is arranged on the tool holder and has a support surface. The support surface is away from the base body relative to the mounting surface of the tool holder. Two ends of the driving cylinder are respectively connected to the base body and the support surface.

[0021] In some embodiments, the base body includes a first plate and a second plate. The first plate and the second plate are stacked together. The damping holes penetrate through the first plate and the second plate. The base body is connected to the tool holder through the second plate. The first plate and the second plate are detachably connected.

[0022] In some embodiments, the first plate is slidably connected to the second plate, such that the first plate can slide from an overlapping position to a staggered position relative to the second plate to release the shielding of the part of the damping hole located on the second plate.

[0023] In some embodiments, the first vibration damping device includes a driving mechanism, which is drivingly connected to the first plate to drive the first plate to slide from an overlapping position to a staggered position relative to the second plate.

[0024] In some embodiments, when the base body is in the first position, the first plate slides from an overlapping position to a staggered position relative to the second plate.

[0025] In some embodiments, the first vibration damping device includes a support member, which is used to support the second plate during the sliding process of the first plate relative to the second plate.

[0026] In some embodiments, the support member is detachably connected to the second plate.

[0027] In some embodiments, the support member is also detachably connected to the tool holder.

[0028] In some embodiments, the support member is connected to the second plate and the tool holder to form a triangle.

[0029] In some embodiments, the first vibration damping device includes two support members for supporting opposite sides of the base body.

[0030] In some embodiments, a suspension connecting member is provided on the tool holder for connecting with the suspension device of the double-wheel milling machine. The milling device includes a second vibration damping device disposed between the suspension connecting member and the tool holder.

[0031] In some embodiments, the tool holder is provided with a mounting hole into which the suspension connecting member is inserted. The second vibration damping device is sleeved outside the suspension connecting member and includes a first vibration damping member and a second vibration damping member. The first vibration damping member is located on a first side of the mounting hole, and the second vibration damping member includes a first vibration damping portion and a second vibration damping portion. The first vibration damping portion is located on a second side of the mounting hole opposite to the first side, and the second vibration damping portion is disposed on the first vibration damping portion and extends into the mounting hole.

[0032] In addition, the double-wheel milling machine provided in this application includes the milling device according to any embodiment of this application.

[0033] The provided first vibration damping device can reduce the vibration of the tool holder based on the interaction between the damping holes and the fluid in the groove milled by the milling wheel, thereby improving the performance of the double-wheel milling machine.

[0034] Other features and advantages of this application will become clear by the following detailed description of the exemplary embodiments of this application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of this application, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0036] Figure 1 It is a schematic structural diagram of the milling device in the first state of the base body in the embodiment of this application.

[0037] Figure 2 It is a top view of the base body in the embodiment of this application.

[0038] Figure 3 For Figure 2 The A-A cross-sectional view of

[0039] Figure 4 It is a perspective view of the first plate in the embodiment of this application.

[0040] Figure 5 This is a perspective view of the second plate in the embodiment of the present application.

[0041] Figure 6 This is a schematic structural view of the milling groove device in the second state of the base in the embodiment of the present application.

[0042] Figure 7 This is a schematic structural view of the milling groove device in the third state of the base in the embodiment of the present application.

[0043] Figure 8 This shows a partial schematic structural view of the milling groove device at the second vibration damping device in the embodiment of the present application.

[0044] Figure 9 It is Figure 8 B-B cross-sectional view of

[0045] Explanation of reference numerals:

[0046] 10. Milling groove device;

[0047] 1. Tool rest; 11. First end; 12. Second end; 13. Mounting surface; 14. Mounting hole; 15. Double-ear ear plate; 16. First support; 17. Second support;

[0048] 2. Milling wheel; 21. Milling teeth;

[0049] 3. First vibration damping device; 31. Base; 311. First plate; 312. Second plate; 313. Damping hole; 314. First hole section; 315. Second hole section; 316. Third hole section; 317. Slide groove; 318. Connection hole; 31a. First opening; 31b. Second opening; 32. Single-ear ear plate; 33. Elastic member; 34. Driving mechanism; 341. Driving cylinder; 35. Connection seat; 36. Mounting seat;

[0050] 4. Support beam; 41. Support part; 42. Support surface; 43. Support seat; 44. Connection part;

[0051] 5. Support member;

[0052] 6. Support plate; 61. Pipe-passing hole;

[0053] 7. Suspension connecting member; 71. Cylinder body; 72. Boss; 73. Suspension hole;

[0054] 8. Second vibration damping device; 81. First vibration damping member; 82. Second vibration damping member; 821. First vibration damping part; 822. Second vibration damping part; 83. Sleeve;

[0055] 92. Connecting member; 93. Fixing member; 931. Notch; 94. Gasket; 95. Locking part;

[0056] X, the first direction; Y, the second direction; Z, the third direction. Detailed implementation manners

[0057] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way constitutes a limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present application.

[0058] Technologies, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods and devices should be regarded as part of the specification.

[0059] In the description of the present application, it should be understood that using terms such as "first" and "second" to limit components is only for the convenience of differentiating the corresponding components. Without otherwise stating, the above terms have no special meanings, so they cannot be construed as limiting the scope of protection of the present application.

[0060] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0061] A diaphragm wall refers to a continuous wall constructed underground for supporting the load of a building, intercepting water and preventing seepage, or retaining soil.

[0062] A double-wheel milling machine is an important engineering equipment for diaphragm wall construction operations. It has the advantages of high grooving efficiency, regular groove shape, and wide adaptability to formation geology. Therefore, it is widely used.

[0063] The grooving principle of a double-wheel milling machine is that the milling wheel motor transmits power to the milling wheel reducer, driving two milling wheels installed on the tool rest to rotate at a low speed in opposite directions to mill and break soil and rock to form a groove. When the double-wheel milling machine is operating, the groove milled by the milling wheels usually contains a fluid (including mud) so that the milled rock debris can be discharged to the ground mud station through the slag suction port located between the two milling wheels along with the fluid for centralized slag discharge and screening treatment. To avoid the mud in the groove being pumped out completely, fluid is usually continuously replenished into the groove during the operation process.

[0064] During the milling and crushing process, especially when milling hard rock, the milling wheel will generate significant vibrations. These vibrations are transmitted from the milling wheel and the milling wheel reducer to the tool holder, resulting in severe vibrations of the tool holder. Since key components such as mud pumps and control boxes are usually installed on the tool holder, the severe vibrations of the tool holder will cause the key components such as mud pumps and control boxes installed on the tool holder to vibrate violently, reducing the fatigue life of the corresponding components and affecting the reliability of the double-wheel milling machine. Moreover, since the tool holder is connected to the main body of the double-wheel milling machine through the suspension device of the double-wheel milling machine, the vibrations of the tool holder will also be transmitted to the main body through the suspension device, exacerbating the vibrations of the main body and affecting the operating comfort of the double-wheel milling machine.

[0065] It can be seen that the vibrations of the tool holder will reduce the structural reliability and operating comfort of the double-wheel milling machine, affecting the performance of the double-wheel milling machine. Therefore, it is of great significance to dampen the vibrations of the tool holder.

[0066] In related technologies, some measures have been taken to reduce the vibrations of the tool holder. However, these measures basically rely on elastic components such as rubber parts or springs for vibration damping. Since elastic components such as rubber parts or springs are prone to failure, this vibration damping method has poor reliability. Moreover, this vibration damping method is also likely to affect the force between the milling teeth on the milling wheel and the rock and soil, resulting in a reduction in milling efficiency.

[0067] Therefore, there is an urgent need to provide a more effective vibration damping method for the tool holder.

[0068] In view of the above situation, the present application provides a milling groove device.

[0069] Figures 1 - 9 The structure of the milling groove device of the present application is exemplarily shown.

[0070] See Figures 1 - 9 , the milling groove device 10 provided by the present application includes a tool holder 1, two milling wheels 2, and a first vibration damping device 3. The two milling wheels 2 and the first vibration damping device 3 are both arranged on the tool holder 1. The milling wheel 2 is provided with milling teeth 21 for milling and crushing geological structures such as rocks and soils. The first vibration damping device 3 is used to dampen the vibrations of the tool holder 1. The first vibration damping device 3 includes a base body 31. The base body 31 is connected to the mounting surface 13 of the tool holder 1, and the base body 31 is provided with damping holes 313. The damping holes 313 penetrate the base body 31 along the thickness direction of the base body 31. The base body 31 has a first state. When in the first state, the base body 31 is located at a first position, and the surface in the thickness direction of the base body 31 intersects with the mounting surface 13 of the tool holder 1, so that the fluid in the groove milled by the milling wheel 2 can flow through the damping holes 313. Wherein, the mounting surface 13 of the tool holder 1 is the surface of the tool holder 1 for connecting with the base body 31.

[0071] In the above solution, the first damping device 3 can perform damping by utilizing the interaction between the base body 31 and the fluid in the groove milled by the milling wheel 2. The fluid in the groove milled by the milling wheel 2 is mainly mud, which has certain viscous characteristics. When the corresponding fluid flows through the damping hole 313, the movement resistance of the tool holder 1 can be increased, thereby achieving the damping effect. Since, in the actual working process, most or even all of the tool holder 1 will be immersed in the fluid in the groove milled by the milling wheel 2, therefore, by arranging the base body 31 with the damping hole 313 on the tool holder 1, during the milling and crushing process, the fluid in the groove milled by the milling wheel 2 can flow through the damping hole 313, and then, by utilizing the damping effect of the damping hole 313 on the fluid, the vibration of the tool holder 1 can be reduced.

[0072] Since the first damping device 3 can reduce the vibration of the tool holder 1, it is beneficial to reduce the vibration of the components arranged on the tool holder 1, especially key components such as the mud pump and the control box, and reduce the risk of fatigue failure of the corresponding components. Furthermore, the fatigue life of the components on the tool holder 1 can be prolonged, and the reliability of the double-wheel milling machine can be improved. At the same time, the first damping device 3 damping the tool holder 1 is also beneficial to reducing the vibration transmission of the tool holder 1 to the suspension device and the main machine, and improving the operation comfort of the double-wheel milling machine.

[0073] Moreover, since the first damping device 3 does not rely on elastic components such as rubber parts or springs to perform damping, but relies on the interaction between the base body 31 with the damping hole 313 and the fluid in the groove milled by the milling wheel 2 to perform damping, it is possible to prevent the damping effect and damping reliability from being affected due to the failure of elastic components such as rubber parts or springs. At the same time, it is possible to prevent the elastic components such as rubber parts or springs from affecting the force between the milling teeth 21 on the milling wheel 2 and the rock and soil, and thus affecting the milling efficiency.

[0074] It can be seen that the provided first damping device 3 can effectively and reliably reduce the vibration of the tool holder 1, and has little influence on the normal milling and crushing process, which is beneficial to improving the reliability, operation comfort and milling efficiency of the double-wheel milling machine, and effectively improving the performance of the double-wheel milling machine.

[0075] To further improve the damping effect, refer to Figures 2 - 5 , in some embodiments, the two ends of the damping hole 313 are respectively the first opening 31a and the second opening 31b, and the first opening 31a and the second opening 31b are arranged staggeredly in the thickness direction of the base body 31. At this time, the two ends of the damping hole 313, that is, the first opening 31a and the second opening 31b, are not directly opposite or collinear in the thickness direction of the base body 31.

[0076] Since the resistance of the fluid flowing through the damping hole 313 is greater when the first opening 31a and the second opening 31b are offset from each other in the thickness direction of the base body 31 than when they are directly opposite in the thickness direction of the base body 31, the damping hole 313 is configured such that its first opening 31a and second opening 31b are offset from each other in the thickness direction of the base body 31, which is conducive to strengthening the damping effect of the damping hole 313 on the fluid, and further improving the vibration damping effect, so that the vibration of the tool rest 1 is further reduced.

[0077] Specifically, referring to Figure 3 , in some embodiments, the damping hole 313 includes a first hole section 314, a second hole section 315, and a third hole section 316. The first hole section 314, the second hole section 315, and the third hole section 316 are connected in sequence. The first opening 31a and the second opening 31b are respectively located on the first hole section 314 and the third hole section 316, and the longitudinal cross-sectional width of the second hole section 315 is greater than the longitudinal cross-sectional widths of the first hole section 314 and the third hole section 316.

[0078] Since the second hole section 315 is connected between the first hole section 314 and the third hole section 316, and the longitudinal cross-sectional width of the second hole section 315 is greater than the longitudinal cross-sectional widths of the first hole section 314 and the third hole section 316, the first opening 31a located on the first hole section 314 and the second opening 31b located on the third hole section 316 can be offset from each other and not directly opposite in the thickness direction of the base body 31. Moreover, the corresponding setting makes the damping hole 313 not a straight through hole but a bent hole. In this way, the fluid flows tortuously in the damping hole 313, which can further increase the resistance of the fluid flowing through the damping hole 313, and then can more effectively and quickly attenuate the vibration of the tool rest 1, realizing the improvement of the vibration damping effect and the improvement of the vibration damping efficiency.

[0079] Among them, the side walls of the first hole section 314, the second hole section 315, and the third hole section 316 can be straight surfaces or curved surfaces. In addition, the depth direction of the first hole section 314, the second hole section 315, and the third hole section 316 can be parallel to the thickness direction of the base body 31, or can be inclined relative to the thickness direction of the base body 31.

[0080] Exemplarily, referring to Figure 3 , in some embodiments, the second hole section 315 is connected to both the first hole section 314 and the third hole section 316 in an L shape. At this time, the structure of the damping hole 313 is relatively simple, and a bent flow channel that allows the fluid to flow through twice can be formed, which can effectively increase the resistance of the fluid flowing through the base body 31 and achieve a better vibration damping effect.

[0081] In the foregoing embodiments, when the base body 31 is in the first position, the surface in the thickness direction thereof intersects with the mounting surface 13 of the tool rest 1 for connecting the base body 31, facilitating the fluid in the groove milled during the milling and crushing process to flow through the damping holes 313. Herein, the surface in the thickness direction of the base body 31 intersecting with the mounting surface 13 of the tool rest 1 means that the surface in the thickness direction of the base body 31 is not parallel to the mounting surface 13 of the tool rest 1, but is relatively inclined or perpendicular to each other. For example, referring to Figure 1 , in some embodiments, when in the first position, the surface in the thickness direction of the base body 31 is perpendicular to the mounting surface 13 of the tool rest 1. In this way, during the milling and crushing process, for the base body 31 in the first position, the surface in its thickness direction is perpendicular to the up-down direction, and can better receive the fluid flowing from top to bottom under the action of gravity, enabling the fluid to flow through the damping holes 313 more fully. Therefore, a better vibration damping effect can be achieved.

[0082] Since during the milling and crushing process, the base body 31 in the first position is immersed in the fluid in the milled groove and may contact and collide with the groove wall of the groove milled by the milling wheel 2, generating an impact. Therefore, to further solve the corresponding problems, referring to Figures 1 - 3 , in some embodiments, the first vibration damping device 3 includes an elastic member 33, and the elastic member 33 is arranged at the edge of the base body 31. In this way, the base body 31 can contact the groove wall of the groove milled by the milling wheel 2 through the elastic member 33, reducing the collision impact between the base body 31 and the groove wall of the groove milled by the milling wheel 2 in the case of the tool rest 1 shaking, etc., and reducing the risk of deformation or damage of the base body 31.

[0083] Among them, elastic members 33 can be arranged on all four edges of the base body 31, or alternatively, elastic members 33 can be arranged only on some edges of the base body 31. For example, referring to Figures 1 - 3 , in some embodiments, the elastic member 33 is arranged on the edge of the base body 31 opposite to the end connected to the tool rest 1. In this way, while playing a certain role in reducing the collision impact, the structure can be simplified and the cost can be saved.

[0084] In the foregoing embodiments, the mounting surface 13 of the tool rest 1 can be the surface of the tool rest 1 parallel to the axial direction of the milling wheel 2, or can also be the surface of the tool rest 1 perpendicular to the axial direction of the milling wheel 2. Among them, referring to Figure 1 , when the mounting surface 13 is perpendicular to the axial direction of the milling wheel 2, during the milling process, the fluid in the milled groove can flow through the damping holes 313 more fully. Therefore, it is beneficial to achieve a better vibration damping effect.

[0085] In addition, in the foregoing embodiments, the number of the first vibration damping devices 3 can be one, or at least two. As an example, referring to Figure 1In some embodiments, the slot milling device 10 includes two first vibration damping devices 3, and the two first vibration damping devices 3 are arranged on opposite sides of the tool holder 1. In this way, the vibration of the tool holder 1 can be more effectively reduced, the reliability and operating comfort of the double-wheel slot milling machine can be improved, and the performance of the double-wheel slot milling machine can be improved.

[0086] As an example of the base body 31 in the aforementioned embodiments, the base body 31 is an integral structure or a split structure.

[0087] For example, see Figures 1 - 6 In some embodiments, the base 31 includes a first plate 311 and a second plate 312, the first plate 311 and the second plate 312 are stacked together, the damping hole 313 runs through the first plate 311 and the second plate 312, the base 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. At this time, the base 31 is a split structure.

[0088] Since the first plate 311 and the second plate 312 stacked together of the base 31 are detachably connected, the first plate 311 and the second plate 312 can be separated (completely separated or partially separated) during cleaning or maintenance, so it is convenient to quickly clean and maintain the base 31, and this effect is particularly prominent when the damping hole 313 is a non-through hole. Because when the damping hole 313 is a non-through hole, it is difficult to clean the damping hole 313, and the first plate 311 and the second plate 312 are set to be detachable, the first plate 311 and the second plate 312 can be separated, and the parts of the damping hole 313 located on the first plate 311 and the second plate 312 can be cleaned separately, so as to effectively reduce the difficulty of cleaning the damping hole 313 and improve the cleaning efficiency and thoroughness.

[0089] Specifically, see Figures 2 - 6 In some embodiments, the first plate 311 is slidably connected to the second plate 312, so that the first plate 311 can remove the obstruction of the portion of the damping hole 313 located on the second plate 312 by sliding from an overlapping position to a staggered position relative to the second plate 312.

[0090] The above arrangement allows the first plate 311 and the second plate 312 to be detachable, and the first plate 311 can slide between the overlapping position and the staggered position relative to the second plate 312. When in the overlapping position, the first plate 311 and the second plate 312 are stacked together facing each other, and the portion of the damping hole 313 located on the first plate 311 (for example Figure 3 The first hole section 314 shown in FIG. 1 and the portion of the damping hole 313 located on the second plate 312 (eg Figure 3The second hole section 315 and the third hole section 316 shown are aligned and connected so that the fluid in the milled groove can pass through smoothly for vibration damping. When in the staggered position, the first plate 311 and the second plate 312 are no longer facing each other but are staggered. Thus, referring to Figure 6 , the first plate 311 may no longer shield the part of the damping hole 313 located on the second plate 312, and the second plate 312 may no longer shield the part of the damping hole 313 located on the first plate 311. The parts of the damping hole 313 located on the first plate 311 and the second plate 312 can both be exposed without being blocked. Therefore, it is convenient to clean and maintain the parts of the damping hole 313 located on the first plate 311 and the second plate 312 respectively, which is conducive to quickly and thoroughly completing the cleaning and maintenance of the base body 31.

[0091] Moreover, based on the above settings, when cleaning and maintenance are required, referring to Figure 6 , after the first plate 311 slides to the staggered position, it can still maintain the connection with the second plate 312 without being completely separated from the second plate 312. After cleaning or maintenance, there is no need to reassemble the first plate 311 and the second plate 312. Therefore, it is also conducive to simplifying the operation and facilitating the first vibration damping device 3 to quickly resume the next milling and crushing process after cleaning and maintenance.

[0092] It can be seen that setting the first plate 311 to be able to slide between the overlapping position and the staggered position is conducive to simplifying the cleaning and maintenance process of the base body 31 and enhancing the adaptability of the base body 31 to different requirements such as milling vibration damping and cleaning and maintenance.

[0093] Among them, as previously mentioned, during the milling vibration damping process, the state of the fluid in the milled groove flowing through the damping hole 313 can be referred to as the first state of the base body 31; for the convenience of distinction, during the cleaning and maintenance process, the separation of the first plate 311 and the second plate 312 of the base body 31 can be referred to as the second state of the base body 31.

[0094] As previously mentioned, when in the first state, the base body 31 is in the first position; when in the second state, the base body 31 can be in the first position or other positions. For example, referring to Figure 6 , in some embodiments, when the base body 31 is in the first position, the first plate 311 slides from the overlapping position to the staggered position relative to the second plate 312. At this time, when in the second state, the base body 31 is in the first position. That is to say, whether it is the first state corresponding to milling vibration damping or the second state corresponding to cleaning and maintenance, the base body 31 is in the first position. The difference is that in the first state, the first plate 311 and the second plate 312 of the base body 31 are vertically facing each other, and in the second state, the first plate 311 and the second plate 312 of the base body 31 are staggered or separated.

[0095] The base 31 is configured such that both the first state and the second state are achieved at the first position, which is conducive to simplifying the use process of the slot milling device 10. Moreover, when the first position is a position where the surface of the base 31 in the thickness direction is perpendicular to the mounting surface 13, the second state is also completed at the first position, and the surface of the base 31 in the thickness direction can be perpendicular to the up-down direction during cleaning and maintenance, so that it is more convenient to clean and maintain the base 31, especially the damping hole 313 on the base 31.

[0096] In the embodiment in which the base 31 is switched to the second state by sliding of the first plate 311 , the sliding of the first plate 311 may be performed manually or automatically.

[0097] In order to realize the automatic sliding of the first plate 311, see Figure 6 In some embodiments, the first vibration reduction device 3 includes a driving mechanism 34, which is drivingly connected to 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. Based on this, the first plate 311 can automatically slide between the overlapping position and the staggered position under the drive of the driving mechanism 34, which saves time and effort and is highly efficient.

[0098] The drive mechanism 34 may have various structural forms. Figure 6 In some embodiments, the driving mechanism 34 includes a driving cylinder 341 (such as an oil cylinder, a gas cylinder or an electric cylinder). In this case, the driving mechanism 34 is a telescopic driving mechanism, which can drive the first plate 311 to slide between the overlapping position and the staggered position by telescoping, which is simple and convenient.

[0099] When the milling device 10 includes at least two first vibration damping devices 3, different first vibration damping devices 3 can be respectively equipped with driving mechanisms 34 to respectively drive different first plates 311 to slide, or different first vibration damping devices 3 can also share the same driving mechanism 34 so that the same driving mechanism 34 drives different first plates 311 to slide.

[0100] In the above embodiments, in order to further facilitate the sliding of the first plate 311, see Figure 6 The first vibration reduction device 3 may further include a support member 5, and the support member 5 is used to support the second plate 312 during the sliding process of the first plate 311 relative to the second plate 312.

[0101] Since the support member 5 supports the second plate 312 during the sliding of the first plate 311, the support member 5 can limit the position of the second plate 312 to prevent the second plate 312 from shifting. Therefore, it is more convenient to realize the sliding of the first plate 311 between the overlapping position and the staggered position, and thus it is more convenient for the base body 31 to switch between different states. In particular, when the sliding of the first plate 311 is performed when the base body 31 is in the first position, and the first plate 311 slides under the drive of the drive mechanism 34, using the support member 5 to support the second plate 312 can prevent the second plate 312 from being crushed during the process of the drive mechanism 34 driving the first plate 311 to slide from the overlapping position to the staggered position. Therefore, it is more convenient to realize the cleaning and maintenance process.

[0102] Moreover, the provided support member 5 can also support the second plate 312 during the cleaning process of the base body. In this way, the base body 31 can better withstand the impact force of the cleaning liquid and will not be knocked down by the cleaning liquid. Therefore, from this perspective, it is also convenient to realize the cleaning process.

[0103] Among them, the structural form of the support member 5 can be diverse. For example, in some embodiments, the support member 5 is a support table (not shown), and the support table is fixed on the mounting surface 13 of the tool rest 1 and supports the second plate 312 when the base body 31 is in the first position, so that the support table can support the second plate 312 during the sliding process of the first plate 311. For another example, referring to Figure 6 , in some embodiments, the support member 5 is connected to the second plate 312 and the tool rest 1 to form a triangle. In this way, the stable characteristics of the triangle can be utilized to realize more stable support for the second plate 312.

[0104] In addition, the combination method between the support member 5 and the second plate 312 can be diverse. For example, the two can only be in contact without connection; for another example, the two can be connected. And when the support member 5 is connected to the second plate 312, the connection between the support member 5 and the second plate 312 can be either a detachable connection or a non-detachable connection.

[0105] Among them, when the support member 5 is detachably connected to the second plate 312, the support member 5 can be connected to the second plate 312 only when the first plate 311 needs to slide. In other cases, such as when the entire base body 31 needs to be removed from the tool rest 1, or when the base body 31 needs to move from the first position to other positions (such as the second position mentioned below), the support member 5 is removed from the second plate 312 to release the constraint of the support member 5 on the second plate 312 in the corresponding cases, facilitating the overall displacement of the base body 31.

[0106] It can be seen that constructing the connection between the support member 5 and the second plate 312 to be detachable is beneficial to improving the working flexibility of the base body 31 and facilitating the satisfaction of different usage requirements.

[0107] When the support member 5 is detachably connected to the second plate 312, in order to prevent the support member 5 removed from the second plate 312 from being lost, refer to Figure 1 and Figure 6 , in some embodiments, the support member 5 is also detachably connected to the tool rest 1. In this way, when cleaning and maintenance are required, the support member 5 can be removed from the tool rest 1 and connected to the second plate 312 to support the second plate 312. After the cleaning and maintenance are completed and the position of the base body 31 needs to be changed as a whole, for example, when the base body 31 needs to be rotated from the first position to the second position mentioned below, the support member 5 can be removed from the second plate 312 and reconnected to the tool rest 1 for the next use, so as not to be lost.

[0108] The base body 31 in each of the foregoing embodiments can be configured to always remain in the first position, or can also be configured to be capable of moving between the first position and other positions.

[0109] For example, refer to Figure 1 and Figure 7 , in some embodiments, the base body 31 is rotatably connected to the mounting surface 13 of the tool rest 1, so that the base body 31 can rotate between the first position and the second position. When in the second position, the surface in the thickness direction of the base body 31 is parallel to the mounting surface 13 of the tool rest 1. In this way, it is convenient for the overall lifting of the milling groove device 10. Specifically, when the tool rest 1 rises or falls, the base body 31 can be rotated from the first position to the second position to retract the base body 31, preventing the base body 31 from increasing the lifting resistance. Therefore, it is convenient for the tool rest 1 to be lifted or lowered, and further convenient for the overall lifting of the milling groove device 10.

[0110] It can be seen that configuring the base body 31 to be rotatable between the first position and the second position can flexibly meet the different requirements of tool rest vibration reduction and tool rest lifting, making the milling groove device 10 not only have less vibration but also be convenient for lifting. In order to facilitate distinction from the first state when the base body 31 is in the first position, when the base body 31 is in the second position, it can be called the third state.

[0111] Among them, the rotation of the base body 31 between the first position and the second position can be completed manually or automatically. For example, refer to Figures 1 - 7 , in some embodiments, the milling groove device 10 includes a driving mechanism 34, and the driving mechanism 34 is drivingly connected to the base body 31 to drive the base body 31 to rotate between the first position and the second position. In this way, the base body 31 can be automatically rotated under the drive of the driving mechanism 34, which is simple, convenient and efficient.

[0112] As an example of the driving mechanism 34 for driving the rotation of the base body 31, refer to Figures 1 - 7, in some embodiments, the driving mechanism 34 includes a driving cylinder 341. In this way, the telescoping of the driving cylinder 341 can be utilized to drive the base body 31 to rotate between the first position and the second position.

[0113] And, referring to Figure 1 and Figure 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. Two ends of the driving cylinder 341 are respectively connected to the base body 31 and the support surface 42.

[0114] Since the support surface 42 to which the driving cylinder 341 is connected is away from the base body 31 relative to the mounting surface 13 of the tool rest 1, therefore, referring to Figure 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 rest 1. When in the second position, the surface in the thickness direction of the base body 31 can be closer to the mounting surface 13 of the tool rest 1, and even the surface in the thickness direction of the base body 31 can contact the mounting surface 13 of the tool rest 1. This can further reduce the lifting resistance of the tool rest 1 and facilitate the lifting of the tool rest 1.

[0115] When the milling groove device 10 includes at least two first damping devices 3, different first damping devices 3 can be respectively equipped with driving mechanisms 34 to respectively drive different base bodies 31 to rotate, or different first damping devices 3 can also share the same driving mechanism 34 to drive different base bodies 31 to rotate by the same driving mechanism 34.

[0116] In addition, in the embodiment where the base body 31 can rotate automatically and the base body 31 includes a first plate 311 that can automatically slide between an overlapping position and a staggered position relative to the second plate 312, the driving mechanism 34 for driving the rotation of the base body 31 and the driving mechanism 34 for driving the sliding of the first plate 311 can be different mechanisms or the same mechanism. Among them, when the driving mechanism 34 for driving the base body 31 to rotate between the first position and the second position and the driving mechanism 34 for driving the first plate 311 of the base body 31 to slide between the overlapping position and the staggered position are the same mechanism, the structure is simpler and the cost is lower.

[0117] As previously mentioned, in the double-wheel milling machine, the tool rest 1 is connected to the main machine (not shown) through a suspension device (not shown). In this case, the vibration of the tool rest will be transmitted to the main machine through the suspension device, aggravating the vibration of the main machine and affecting the operation comfort of the double-wheel milling machine. To solve this problem, in addition to the method of damping the tool rest 1 in the foregoing embodiments, other methods can also be adopted.

[0118] For example, referring to Figure 1 and Figures 8 - 9, in some embodiments, a suspension connecting member 7 is provided on the tool rest 1. The suspension connecting member 7 is used to connect with a suspension device (not shown in the figure) of the double-wheel milling machine, and the milling groove device 10 includes a second damping device 8. The second damping device 8 is arranged between the suspension connecting member 7 and the tool rest 1. In this way, the second damping device 8 constitutes a damping device between the tool rest 1 and the suspension device, and can attenuate the transmission of the tool rest vibration to the suspension connecting member 7, so as to attenuate the transmission of the tool rest vibration to the suspension device and the main machine, thereby being beneficial to reducing the vibration of the suspension device and the main machine and improving the operation comfort of the double-wheel milling machine.

[0119] Specifically, referring to Figure 9 , in some embodiments, a mounting hole 14 is provided on the tool rest 1. The suspension connecting member 7 is inserted into the mounting hole 14. The second damping device 8 is sleeved outside the suspension connecting member 7 and includes a first damping member 81 and a second damping member 82. The first damping member 81 is located on the first side of the mounting hole 14. The second damping member 82 includes a first damping portion 821 and a second damping portion 822. The first damping portion 821 is located on the second side of the mounting hole 14 opposite to the first side. The second damping portion 822 is arranged on the first damping portion 821 and extends into the mounting hole 14. In this way, the second damping device 8 can more effectively attenuate the transmission of the tool rest vibration to the suspension connecting member 7, thereby more effectively improving the operation comfort of the double-wheel milling machine.

[0120] Next, the embodiments of Figures 1 - 9 will be further introduced.

[0121] As Figures 1 - 9 shown, in this embodiment, the milling groove device 10 includes a tool rest 1, two milling wheels 2, a first damping device 3, a driving cylinder 341, a support beam 4, a support plate 6, a suspension connecting member 7, a second damping device 8, a connecting member 92, a fixing member 93, a gasket 94 and a lock washer 95.

[0122] Among them, as Figure 1As shown, the tool rest 1 is generally cube-shaped, and a rectangular hole penetrating the thickness direction is provided in the middle of its length direction. The suspension connecting member 7 for connecting with the suspension device and two milling wheels 2 for milling geological structures are arranged at opposite ends of the tool rest 1 along the first direction X. The axial directions of the two milling wheels 2 are both along the second direction Y. At the same time, the two milling wheels 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, corresponding to the height direction, the thickness direction (or width direction), and the length direction of the tool rest 1 respectively. After being installed in the double-wheel milling trencher, 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. The side where the suspension connecting member 7 is located is the upper side relative to the side where the milling wheels 2 are located, and the side where the milling wheels 2 are located is the lower side relative to the side where the suspension connecting member 7 is located. That is to say, the two ends of the tool rest 1 provided with the suspension connecting member 7 and the milling wheels 2 are the upper end and the lower end respectively. In other words, the milling wheels 2 and the suspension connecting member 7 are respectively arranged at the lower end (marked as the first end 11 in Figure 1 ) and the upper end (marked as the second end 12 in Figure 1 ).

[0123] The suspension connecting member 7 is provided with a suspension hole 73 for connecting with the suspension device to realize the connection between the milling trenching device 10 and the suspension device, so that the suspension device can lift the milling trenching device 10.

[0124] Both of the two milling wheels 2 are provided with milling teeth 21, and both of the two milling wheels 2 can rotate. When the two milling wheels 2 rotate, the milling teeth 21 can be used to mill and break rocks and soil. During the actual milling trenching process, the two milling wheels 2 rotate in opposite directions, and the milled slag is discharged to the ground mud station (not shown in the figure) through the slag suction port (not shown in the figure) located between the two milling wheels 2 and the mud pipe (not shown in the figure) along with the fluid in the trench for centralized slag discharging and screening treatment.

[0125] In this embodiment, the mud pipe passes through the support plate 6 on the tool rest 1. As Figure 1 shown, in this embodiment, the support plate 6 is arranged inside the tool rest 1, and the support plate 6 is provided with a pipe passing hole 61, so that the mud pipe and the hydraulic pipe of the double-wheel milling trencher can pass through it. As Figure 1 known, in this embodiment, the upper surface of the support plate 6 (i.e., the surface of the support plate 6 facing away from the milling wheels 2) is flush with the upper surface of the base body 31 of the first damping device 3 when in the first position.

[0126] The first damping device 3 is arranged between the two ends of the tool rest 1 along the first direction X for reducing the vibration of the tool rest 1. As Figure 1 shown, in this embodiment, the first damping device 3 includes a base body 31, an elastic member 33, and a support member 5. The base body 31 includes a first plate 311 and a second plate 312 stacked together.

[0127] Among them, the second plate 312 is generally rectangular and is rotatably connected to the tool holder 1 to realize the rotatable connection between the base body 31 and the tool holder 1, so that the base body 31 can rotate between the first position and the second position. The first plate 311 is generally rectangular and is stacked on the second plate 312 and is slidably connected to the second plate 312, so that the first plate 311 can slide on the second plate 312 between the overlapping position and the staggered position.

[0128] Specifically, as Figure 1 shown, in this embodiment, two double-ear lugs 15 are provided on the end surface of the tool holder 1 along the second direction Y. At the same time, as Figures 2 - 5 shown, two single-ear lugs 32 are provided at one end of the second plate 312. The two double-ear lugs 15 and the two single-ear lugs 32 are arranged at intervals along the third direction Z, and the two double-ear lugs 15 and the two single-ear lugs 32 correspond one by one. Each single-ear lug 32 is respectively inserted into the corresponding double-ear lug 15 and is penetrated by a pin shaft to realize the hinged connection of the second plate 312 on the tool holder 1. In this way, the surface of the tool holder 1 along the second direction Y constitutes the mounting surface 13 of the tool holder 1 for connecting with the base body 31, and the second plate 312 is rotatably connected to the mounting surface 13, so that the second plate 312 can rotate relative to the tool holder 1 between the first position and the second position.

[0129] At the same time, as Figures 2 - 5 shown, in this embodiment, a chute 317 is provided on the second plate 312, and the first plate 311 is inserted into the chute 317 to realize the sliding connection with the second plate 312. Among them, as Figure 5 known, in this embodiment, the chute 317 is 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 end connected to the tool holder 1. Three sides of the first plate 311 are inserted into the chute 317 and are slidably matched with the chute 317, so that the first plate 311 can not only rotate between the first position and the second position together with the second plate 312, but also slide relative to the second plate 312 between the overlapping position and the staggered position.

[0130] And, as Figure 2 shown, in this embodiment, a connection hole 318 is provided at one end of the second plate 312 opposite to the end connected to the tool holder 1. At the same time, a connection hole 318 is also provided at the corresponding end of the first plate 311. 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 piece 92 passes through the aligned connection holes 318 to fix the first plate 311 and the second plate 312 together to prevent the first plate 311 from accidentally sliding when it needs to be kept in the overlapping position. When the first plate 311 needs to slide to the staggered position, the connecting piece 92 can be removed first, and then the first plate 311 can be driven to slide from the overlapping position to the staggered position.

[0131] Meanwhile, as Figures 1 - 3 shown, in this embodiment, an elastic member 33 is provided at one end of the second plate 312 opposite to the end connected to the tool rest 1. The elastic member 33 is made of rubber material and is fixed to one end of the second plate 312 opposite to the end connected to the tool rest 1 by vulcanization, which helps to reduce the collision impact between the base body 31 and the groove wall of the milled groove when the tool rest 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.

[0132] To reduce the vibration of the tool rest 1, as Figures 1 - 5 shown, in this embodiment, a plurality of damping holes 313 are provided on the base body 31. These damping holes 313 are arranged in a matrix on the base body 31, and each damping hole 313 penetrates the base body 31 along the thickness direction of the base body 31 (i.e., the stacking direction of the first plate 311 and the second plate 312). Among them, from Figures 2 - 5 it can be seen that in this embodiment, the structure of each damping hole 313 is the same, and each 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 is rectangular. The second hole section 315 and the third hole section 316 are both located on the second plate 312 and are both rectangular. The second hole section 315 is located between the first hole section 314 and the third hole section 316 and connects the first hole section 314 and the third hole section 316. At this time, the end opening of the first hole section 314 far from the third hole section 316 constitutes the first opening 31a of the damping hole 313, and the end opening of the third hole section 316 far from the first hole section 314 constitutes the second opening 31b of the damping hole 313. Moreover, as Figure 3 shown, in this embodiment, 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, and the second hole section 315 is vertically connected to both the first hole section 314 and the third hole section 316, so that the second hole section 315 is connected to both the first hole section 314 and the third hole section 316 in an L shape. At this time, as Figure 3 shown, the damping hole 313 forms a double-bending flow channel, and its first opening 31a and second opening 31b are not directly opposite in the thickness direction of the base body 31 and are staggered from each other. In this way, the damping hole 313 can allow the fluid in the milled groove to flow through, and when the fluid in the milled groove flows through the damping hole 313, it can experience two successive bends, thereby effectively increasing the movement resistance of the tool rest 1 and reducing the vibration of the tool rest 1.

[0133] As Figure 1 shown, in this embodiment, when the base body 31 is in the first position and the first plate 311 is in the overlapping position, the fluid in the milled groove flows through the damping hole 313, and the damping hole 313 reduces vibration.

[0134] ComprehensivelyFigure 1 , Figure 6 and Figure 7 It can be seen that in this embodiment, the first position is a horizontal position perpendicular to the first direction X, and the second position is perpendicular to the first position and is a vertical position parallel to the first direction X. When in the first position, the plate surfaces of the first plate 311 and the second plate 312 are both horizontal, perpendicular to the first direction X and the mounting surface 13, and the first plate 311 is located above the second plate 312 (i.e., on the side away from the milling wheel 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 in the same plane as the upper surface of the support plate 6 (i.e., the surface of the support plate 6 away from the milling wheel 2). When in the second position, the plate surfaces of the first plate 311 and the second plate 312 are both vertical, parallel to the first direction X and the mounting surface 13.

[0135] In order to enable the base body 31 to automatically rotate between the first position and the second position, as Figure 1 and Figure 7 shown, in this embodiment, the driving cylinder 341 is drivingly connected to the first plate 311. Specifically, as Figure 1 can be seen, in this embodiment, a connecting seat 35 is provided on the first plate 311. At the same time, a support beam 4 is provided above the connection position of the tool rest 1 with the second plate 312, and a support seat 43 is provided on the support beam 4. The cylinder barrel and the cylinder rod of the driving cylinder 341 are respectively hinged to the support seat 43 and the connecting seat 35, so that the driving cylinder 341 is arranged on the tool rest 1 and is drivingly connected to the first plate 311. The driving cylinder 341 can drive the base body 31 to rotate between the first position and the second position around the hinge point with the tool rest 1 by telescoping.

[0136] Among them, as Figure 1 shown, in this embodiment, the support beam 4 includes a support portion 41 and a connecting portion 44. The opposite ends of the support portion 41 along the third direction Z are respectively connected to the tool rest 1 through two connecting portions 44. The support portion 41 is in the shape of a flat plate, and the two connecting portions 44 are in the shape of a bend and bend away from the base body 31, so that the end of the support portion 41 connected to the two connecting portions 44 and the tool rest 1 is not coplanar, but is recessed away from the base body 31 relative to the end of the two connecting portions 44 connected to the tool rest 1. The support seat 43 is arranged on the surface of the support portion 41 facing the mounting surface 13. In this way, the surface of the support portion 41 facing the mounting surface 13 constitutes the support surface 42 of the support beam 4 for connecting with the driving cylinder 341. And, as Figure 1 shown, the support surface 42 is away from the base body 31 relative to the mounting surface 13 of the tool rest 1. This setting makes, as Figure 7 shown, when the driving cylinder 341 is fully contracted and the base body 31 rotates to the second position, the base body 31 is attached to the mounting surface 13, and the surface in the thickness direction of the base body 31 contacts the mounting surface 13.

[0137] Combined with Figure 1 , Figure 6 and Figure 7 it can be seen that in this embodiment, the driving cylinder 341 is not only used to drive the base body 31 to rotate between the first position and the second position, but also used to drive the first plate 311 to slide between the overlapping position and the staggered position. Specifically, in this embodiment, the driving cylinder 341 has three preset elongation amounts, namely L1, L2, and L3, where L1 < L2 < L3. When the elongation amount of the driving cylinder 341 is L1, the base body 31 is in the second position; when the elongation 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 elongation amount of the driving cylinder 341 is L3, although the base body 31 is still in the first position, the first plate 311 of the base body 31 is no longer in the overlapping position, but slides outward (i.e., the side away from the mounting surface 13) to the staggered position.

[0138] To facilitate the driving cylinder 341 to drive the first plate 311 to slide from the overlapping position to the staggered position, referring to Figure 1 and Figure 6 , in this embodiment, a support member 5 is provided to support the second plate 312.

[0139] As Figure 1 and Figure 6 shown, in this embodiment, the support member 5 is generally rod-shaped and is detachably connected to both the second plate 312 and the tool rest 1. In this way, the support member 5 can be connected to the second plate 312 when the second plate 312 needs to be supported, and can be connected to the tool rest 1 when the second plate 312 does not need to be supported.

[0140] Specifically, from Figure 1 and Figure 6 it can be seen that in this embodiment, a mounting seat 36 is provided on the lower surface of the second plate 312 (i.e., the surface of the second plate 312 away from the first plate 311), and a first support 16 and a second support 17 are provided on the tool rest 1. The first support 16 is located below the position where the second plate 312 is hinged to the tool rest 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 Figure 1 shown, both ends of the support member 5 are respectively connected to the first support 16 and the second support 17. In this way, the support member 5 is fixed to the tool rest 1, which can effectively prevent the support member 5 from being lost and facilitate its next use. When the second plate 312 needs to be supported, as Figure 6 shown, the end of the support member 5 connected to the second support 17 is removed and connected to the mounting seat 36, so that a triangle is formed by connecting the support member 5 between the second plate 312 and the tool rest 1. In this way, the support member 5 can stably support the second plate 312.

[0141] As Figure 1 andFigure 6 As shown, in this embodiment, the first vibration reduction device 3 includes two support members 5, and the two support members 5 are used to support the opposite sides of the base 31. Figure 1 and Figure 6 It can be seen that in this embodiment, the lower surface of the second plate 312 has two mounting seats 36 arranged at intervals along the third direction Z, and two groups of first supports 16 and second supports 17 are correspondingly provided at both ends of the mounting surface 13 along the third direction Z. In this way, any group of mounting seats 36, first supports 16 and second supports 17 located on both sides of the third direction Z can be detachably connected to a support member 5, so that the two support members 5 can support the opposite sides of the second plate 312 along the third direction Z when needed to achieve a more stable support effect.

[0142] See also Figure 6 When the first plate 311 needs to slide to the staggered position, the driving cylinder 341 continues to extend from the extension amount L2 to L3. In the corresponding process, the driving cylinder 341 will 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 due to the downward thrust, affecting the first plate 311 from smoothly reaching the staggered position. After the second plate 312 is supported by the support member 5, the support member 5 can bear the force of the driving cylinder 341, constrain the second plate 312, and prevent the second plate 312 from rotating downward and moving outward, so that the second plate 312 can be maintained in the horizontal first position during the process of the first plate 311 being pushed, thereby facilitating the sliding of the first plate 311 relative to the second plate 312, and the first plate 311 can smoothly slide outward on the second plate 312 to the staggered position, so that the parts of the damping hole 313 located on the first plate 311 and the second plate 312 are exposed, which is convenient for cleaning and maintenance.

[0143] Based on the above configuration, the base 31 of the first vibration reduction device 3 has three states, namely, a first state that meets the needs of milling vibration reduction, a second state that meets the needs of cleaning and maintenance, and a third state that meets the needs of tool holder lifting. Figure 1 , Figure 6 and Figure 7 Shown in.

[0144] in, Figure 1 The first state is shown. Figure 1As shown, in the first state, the first plate 311 and the second plate 312 are fixed by the connecting member 92. The elongation of the driving cylinder 341 is L2. The base 31 is located at the first position, and the first plate 311 is in the overlapping position. The parts of the damping holes 313 on the first plate 311 and the second plate 312 are aligned and communicated. At this time, the milling wheel 2 mills and crushes the rock and soil, and the base 31 is also immersed in the fluid in the milled groove. Thus, the fluid in the milled groove can flow through the respective damping holes 313 on the base 31, increasing the movement resistance of the tool holder 1 and quickly attenuating the vibration of the tool holder 1. From Figure 1 It can be seen that in the first state, the two ends of the support member 5 are respectively connected to the first support 16 and the second support 17, and do not support the second plate 312.

[0145] Figure 6 The second state is shown. As Figure 6 shown, 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 removed. The elongation of the driving cylinder 341 is L3. The first plate 311 is pushed to the staggered position. The holes on the first plate 311 and the second plate 312 do not block each other and can all be exposed, making cleaning and maintenance more convenient. During the corresponding process, before the driving cylinder 341 extends to L3, the end of the support member 5 connected to the second support 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 support member 5, and the first plate 311 can smoothly slide outwards to the staggered position under the drive of the driving cylinder 341.

[0146] Figure 7 The third state is shown. As Figure 7 shown, in the third state, the first plate 311 and the second plate 312 are fixed by the connecting member 92. The elongation of the driving cylinder 341 is L1. The base 31 rotates upwards to the second position and contacts the mounting surface 13, so that during the lifting and lowering of the tool holder 1, the resistance is small and it is convenient for the tool holder 1 to lift and lower.

[0147] It can be seen that the provided first vibration damping device 3 can, without affecting the normal lifting and lowering of the tool holder 1, based on the viscous characteristics of the fluid in the milled groove, utilize the interaction between the damping holes 313 and the fluid to effectively reduce the vibration of the tool holder 1. Moreover, for the corresponding first vibration damping device 3, cleaning and maintenance are convenient.

[0148] As Figure 6 shown, in this embodiment, the milling groove device 10 includes two first vibration damping devices 3. These two first vibration damping devices 3 are arranged on the opposite sides of the tool holder 1, which can achieve a better vibration damping effect. Moreover, these two first vibration damping devices 3 are respectively equipped with driving cylinders 341, enabling the bases 31 of the two first vibration damping devices 3 to be independently driven to switch between different states, flexibly meeting different requirements. Among them, fromFigure 6 It can be seen that the two first damping devices 3 of this embodiment are connected to the two side surfaces of the tool rest 1 along the second direction Y (i.e., the front and rear surfaces of the tool rest 1). At this time, the two side surfaces of the tool rest 1 along the second direction Y serve as two mounting surfaces 13, and both of these mounting surfaces 13 are perpendicular to the axial direction of the milling wheel 2.

[0149] As mentioned above, in this embodiment, in addition to setting the first damping device 3 to reduce the vibration of the tool rest 1, a second damping device 8 is also provided to reduce the transmission of vibration from the tool rest 1 to the suspension device.

[0150] As Figure 1 、 Figure 8 and Figure 9 It can be seen that in this embodiment, the second damping device 8 is arranged between the tool rest 1 and the suspension connecting piece 7, and includes a first damping member 81, a second damping member 82 and a sleeve 83.

[0151] Specifically, as Figure 1 、 Figure 8 and Figure 9 shown, in this embodiment, the suspension connecting piece 7 includes a column body 71 and a boss 72. The boss 72 is connected to the end of the column body 71 and protrudes radially outward relative to the column body 71, so that the suspension connecting piece 7 is generally in a T shape as a whole. An installation hole 14 is provided at the second end 12 of the tool rest 1. The suspension connecting piece 7 is inserted into the installation hole 14 from bottom to top, so that the boss 72 is located on the lower side of the installation hole 14 and is inside the tool rest 1, while the column body 71 passes through the installation hole 14 and exposes from the upper side of the installation hole 14. A fixing member 93 is provided on the part of the column body 71 exposed on the upper side of the installation hole 14. The fixing member 93 is threadedly connected to the column body 71. A notch 931 is provided on the upper edge of the fixing member 93. Correspondingly, a through hole is provided on the column body 71, and a locking member 95 passes through the notch 931 and the through hole on the column body 71 to prevent the fixing member 93 from loosening. The locking member 95 is shown in Figure 8 and Figure 9 but is omitted in Figure 1 . Exemplarily, the locking member 95 includes a pin shaft.

[0152] Both the first shock absorber 81 and the second shock absorber 82 are annular shock absorbers, and the two are sleeved outside the cylinder 71. Among them, the first shock absorber 81 is located on the upper side of the mounting hole 14, and a gasket 94 is provided between the first shock absorber 81 and the fixing member 93 for stopping. The second shock absorber 82 includes a first shock absorbing portion 821 and a second shock absorbing portion 822. The first shock absorbing portion 821 is connected to one end of the second shock absorbing portion 822 and protrudes radially outward relative to the second shock absorbing portion 822, so that the second shock absorber 82 forms a convex shock absorbing component. The first shock absorbing portion 821 is located on the lower side of the mounting hole 14 and is between the boss 72 and the top wall of the tool rest 1. The second shock absorbing portion 822 extends into the mounting hole 14. A sleeve 83 made of a metal material is fixed between the second shock absorber 82 and the cylinder 71 by vulcanization. The first shock absorber 81 is sleeved outside the sleeve 83, so that the sleeve 83 can support the first shock absorber 81 and the second shock absorber 82 and reduce the wear of the first shock absorber 81 and the second shock absorber 82.

[0153] Based on the above settings, the first shock absorber 81 and the second shock absorber 82 can effectively attenuate the vibration transmission from the tool rest 1 to the suspension connecting member 7, so that the second shock absorbing device 8 can effectively reduce the vibration transmission from the tool rest 1 to the suspension device.

[0154] It can be seen that the first shock absorbing device 3 and the second shock absorbing device 8 provided fully consider the structural characteristics and operation characteristics of the double-wheel milling machine, and can effectively reduce the vibration of the tool rest 1 and the transmission of the tool rest vibration to the suspension device and the main machine without affecting the normal operations such as the lifting of the tool rest and the milling and crushing. This is beneficial to improving the working reliability of the double-wheel milling machine, improving the operation comfort of the double-wheel milling machine, and further enhancing the performance of the double-wheel milling machine.

[0155] Therefore, based on the milling groove device 10 of the foregoing embodiments, the present application further provides a double-wheel milling machine. The double-wheel milling machine includes the milling groove device 10. And the double-wheel milling machine further includes other devices such as a suspension device.

[0156] The above are only exemplary embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A grooving device (10) of a double-wheel milling machine, characterized in that, Comprising: A tool rest (1); Two milling wheels (2), arranged on the tool rest (1); And A first damping device (3), including a base body (31), the base body (31) is connected to the mounting surface (13) of the tool rest (1), and damping holes (313) are provided on the base body (31), the damping holes (313) penetrate through the base body (31) along the thickness direction of the base body (31), the base body (31) has a first state, when in the first state, the base body (31) is located at a first position, and the surface in the thickness direction of the base body (31) intersects with the mounting surface (13) of the tool rest (1), so that the fluid in the groove milled by the milling wheel (2) can flow through the damping holes (313), wherein, the mounting surface (13) of the tool rest (1) is the surface of the tool rest (1) for connecting with the base body (31).

2. The milling groove device (10) according to claim 1, wherein, The two ends of the damping hole (313) are respectively a first opening (31a) and a second opening (31b), and the first opening (31a) and the second opening (31b) are arranged staggeredly in the thickness direction of the base body (31).

3. The milling groove device (10) according to claim 2, characterized in that, The damping hole (313) includes a first hole section (314), a second hole section (315) and a third hole section (316), the first hole section (314), the second hole section (315) and the third hole section (316) are communicated in sequence, the first opening (31a) and the second opening (31b) are respectively located on 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).

4. The milling groove device (10) according to claim 3, characterized in that, The second hole section (315) is connected to both the first hole section (314) and the third hole section (316) in an L shape.

5. The milling groove device (10) according to claim 1, characterized in that, When in the first position, the surface in the thickness direction of the base body (31) is perpendicular to the mounting surface (13) of the tool rest (1).

6. The grooving device (10) according to claim 1, characterized in that, The first damping device (3) includes an elastic member (33), and the elastic member (33) is arranged at the edge of the base body (31).

7. The milling groove device (10) according to claim 1, characterized in that, The milling groove device (10) includes two of the first damping devices (3), and the two first damping devices (3) are arranged on opposite sides of the tool rest (1).

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

9. The milling groove device (10) according to any one of claims 1-8, characterized in that, The base body (31) is rotatably connected to the mounting surface (13) of the tool rest (1), so that the base body (31) can rotate between the first position and the second position, when in the second position, the surface in the thickness direction of the base body (31) is parallel to the mounting surface (13) of the tool rest (1).

10. The milling groove device (10) according to claim 9, characterized in that, When in the second position, the surface in the thickness direction of the base body (31) contacts the mounting surface (13) of the tool rest (1).

11. The milling groove device (10) according to claim 9, characterized in that, The milling groove device (10) includes a driving mechanism (34), and the driving mechanism (34) is drivingly connected to the base body (31) to drive the base body (31) to rotate between the first position and the second position.

12. The milling groove device (10) according to claim 11, characterized in that, The driving mechanism (34) includes a driving cylinder (341).

13. The milling groove device (10) according to claim 12, characterized in that, The milling groove device (10) includes a support beam (4). The support beam (4) is arranged 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). Two ends of the driving cylinder (341) are respectively connected to the base body (31) and the support surface (42).

14. The milling groove device (10) according to any one of claims 1-8, characterized in that, The base body (31) includes a first plate (311) and a second plate (312). The first plate (311) and the second plate (312) are stacked together. The damping holes (313) penetrate through the first plate (311) and the second plate (312). The base body (31) is connected to the tool rest (1) through the second plate (312). The first plate (311) and the second plate (312) are detachably connected.

15. The milling groove device (10) according to claim 14, characterized in that, The first plate (311) is slidably connected to the second plate (312), so that the first plate (311) can slide from the overlapping position to the staggered position relative to the second plate (312) to release the shielding of the part of the damping hole (313) located on the second plate (312).

16. The milling groove device (10) according to claim 15, characterized in that, The first vibration damping device (3) includes a driving mechanism (34). The driving mechanism (34) is drivingly connected to 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).

17. The milling groove device (10) according to claim 15, characterized in that, When the base body (31) is in the first position, the first plate (311) slides from the overlapping position to the staggered position relative to the second plate (312).

18. The milling groove device (10) according to claim 15, characterized in that, The first vibration damping device (3) includes a support member (5). The support member (5) is used to support the second plate (312) during the sliding process of the first plate (311) relative to the second plate (312).

19. The milling groove device (10) according to claim 18, characterized in that, The support member (5) is detachably connected to the second plate (312).

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

21. The milling groove device (10) according to claim 18, characterized in that, A triangle is formed among the support member (5), the second plate (312) and the tool rest (1).

22. The milling groove device (10) according to claim 18, characterized in that, The first vibration damping device (3) includes two support members (5). The two support members (5) are used to support opposite sides of the base body (31).

23. The milling groove device (10) according to any one of claims 1-8, characterized in that, A suspension connecting member (7) is arranged on the tool rest (1). The suspension connecting member (7) is used to connect with the suspension device of the double-wheel milling groove machine. The milling groove device (10) includes a second vibration damping device (8). The second vibration damping device (8) is arranged between the suspension connecting member (7) and the tool rest (1).

24. The milling groove device (10) according to claim 23, characterized in that, The tool rest (1) is provided with a mounting hole (14), the suspension connecting piece (7) is inserted into the mounting hole (14), the second damping device (8) is sleeved outside the suspension connecting piece (7), and includes a first damping piece (81) and a second damping piece (82). The first damping piece (81) is located on a first side of the mounting hole (14). The second damping piece (82) includes 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. The second damping portion (822) is arranged on the first damping portion (821) and extends into the mounting hole (14).

25. A double-wheel milling machine, characterized in that, Comprising a milling groove device (10) according to any one of claims 1-24.

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