Double-wheel trencher

Abstract

The application discloses a double-wheel slot milling machine. The double-wheel slot milling machine comprises a goose head frame base body, a milling cutter frame and a rotary swing beam, the milling cutter frame is used for mounting a milling wheel; the rotary swing beam is rotatably mounted on the goose head frame base body around a vertical axis, and the milling cutter frame is mounted on the rotary swing beam to rotate with the rotary swing beam. The double-wheel slot milling machine is provided with the rotary swing beam which is rotatable relative to the goose head frame base body, so that when the construction position of the milling cutter frame needs to be changed, the milling cutter frame can be directly driven to rotate by controlling the rotation of the rotary swing beam, and the milling cutter frame does not need to be lifted to the ground and the rotation of the rotary table is controlled, so that the operation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to a double-wheel trenching machine. BACKGROUND

[0002] The double-wheel trenching machine is a kind of underground continuous wall construction equipment, which is widely used in underground continuous wall construction projects. The cutter holder of the double-wheel trenching machine is the main working device, which is hoisted by a steel wire rope and connected with a goose head. During the construction process, when a special trench section such as a corner trench needs to be constructed, the cutter holder needs to be lifted out of the trench to the ground, and the construction position and direction of the cutter holder are adjusted by controlling the rotation of the upper vehicle. However, such operation mode leads to low operation efficiency.

[0003] It should be noted that the statements in this background section are provided only for technical background information related to the present application and do not necessarily constitute the prior art. SUMMARY

[0004] The present application provides a double-wheel trenching machine to improve the operation efficiency.

[0005] The present application provides a double-wheel trenching machine, which comprises a goose head frame base body, a cutter holder and a rotary swing beam, the cutter holder is used for installing a milling wheel; the rotary swing beam is rotatably mounted on the goose head frame base body about a vertical axis, and the cutter holder is mounted on the rotary swing beam to rotate with the rotary swing beam.

[0006] In some embodiments, the double-wheel trenching machine further comprises a rotary speed reducer arranged between the goose head frame base body and the rotary swing beam.

[0007] In some embodiments, the double-wheel trenching machine further comprises a mud pipe, a mud pipe support arranged on the goose head frame base body, and a mud pipe guide mechanism for guiding the mud pipe, the first end of the mud pipe is connected with the cutter holder, the second end of the mud pipe is rested on the mud pipe support, the mud pipe guide mechanism is arranged between the mud pipe support and the cutter holder for guiding the mud pipe, and the mud pipe guide mechanism is rotatably connected with the rotary swing beam.

[0008] In some embodiments, the mud pipe guide mechanism comprises a guide frame, a plurality of guide pipes arranged on the guide frame, and a rotating shaft arranged at the top end of the guide frame, the mud pipe extends along the distribution direction of the plurality of guide pipes, and the guide frame is rotatably connected with the rotary swing beam through the rotating shaft.

[0009] In some embodiments, the plurality of guide pipes are distributed in an arc shape.

[0010] In some embodiments, the double-wheel trenching machine further comprises a feeding device, the feeding device is used for driving the cutter holder to rise and fall in the height direction.

[0011] In some embodiments, the feeding device comprises a winding drum, a steel wire rope, a first pulley arranged on the goose head base body, and a second pulley arranged on the rotary swing beam, one end of the steel wire rope is wound on the winding drum, the other end of the steel wire rope is wound on the first pulley and the second pulley in sequence and is connected with the cutter holder.

[0012] In some embodiments, the central plane of the first pulley is arranged to be inclined relative to the vertical axis to extend the steel wire rope upward, the central plane of the second pulley is arranged to be perpendicular relative to the vertical axis, and the feeding device further comprises a third pulley, the third pulley is arranged on the goose head base body and is arranged between the first pulley and the second pulley in the extension direction of the steel wire rope, and the central plane of the third pulley is arranged to be perpendicular relative to the vertical axis.

[0013] In some embodiments, the first end of the rotary swing beam is rotatably connected to the goose head base body, and the second pulley is arranged on the second end of the rotary swing beam.

[0014] In some embodiments, the central plane of the second pulley is perpendicular to the vertical axis, and the feeding device further comprises a fourth pulley arranged on the rotary swing beam, the central plane of the fourth pulley is parallel to the vertical axis, and the other end of the steel wire rope is wound on the second pulley and then wound on the fourth pulley and connected with the cutter holder.

[0015] In some embodiments, the feeding device further comprises a fifth pulley and a sixth pulley arranged in the cutter holder and a seventh pulley arranged on the rotary swing beam and located above the cutter holder, the fifth pulley and the sixth pulley are arranged in parallel and spaced apart, the other end of the steel wire rope is inserted into the cutter holder after being wound on the fourth pulley, is wound on the fifth pulley and then is extended out of the cutter holder, is wound on the seventh pulley and is inserted into the cutter holder again, is wound on the sixth pulley and is extended out of the cutter holder and is connected with the cutter holder.

[0016] Based on the technical scheme provided by the present application, the double-wheel trencher comprises a goose head base body, a cutter holder and a rotary swing beam, the cutter holder is used for mounting a milling wheel; the rotary swing beam is rotatably mounted on the goose head base body about a vertical axis, and the cutter holder is mounted on the rotary swing beam to rotate with the rotary swing beam. The double-wheel trencher is provided with the rotary swing beam which is rotatable relative to the goose head base body on the goose head base body, so that when the construction position of the cutter holder needs to be changed, the cutter holder can be directly driven to rotate by controlling the rotation of the rotary swing beam, without the need to lift the cutter holder to the ground and control the rotation of the turntable to change, thereby improving the operation efficiency.

[0017] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments thereof, taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

[0019] Figure 1 A perspective view of a double-wheel trenching machine according to an embodiment of the present application in a first working state.

[0020] Figure 2 A top view of a double-wheel trenching machine according to an embodiment of the present application in a first working state.

[0021] Figure 3 A perspective view of a double-wheel trenching machine according to an embodiment of the present application in a second working state.

[0022] Figure 4 A perspective view of a double-wheel trenching machine according to an embodiment of the present application in a second working state from another angle.

[0023] Figure 5 A top view of a double-wheel trenching machine according to an embodiment of the present application in a second working state.

[0024] Figure 6 A partial view of a double-wheel trenching machine according to an embodiment of the present application.

[0025] Figure 7 A view of a mud pipe guide mechanism of a double-wheel trenching machine according to an embodiment of the present application.

[0026] Figure 8 A view of a mud pipe support of a double-wheel trenching machine according to an embodiment of the present application.

[0027] Figure 9 A view of a hydraulic pipe support of a double-wheel trenching machine according to an embodiment of the present application.

[0028] Figure 10 A view of a mud pipe stopper of a double-wheel trenching machine according to an embodiment of the present application.

[0029] Figure 11 A view of a hydraulic pipe guide mechanism of a double-wheel trenching machine according to an embodiment of the present application. DETAILED DESCRIPTION

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0032] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, and the spatial relative descriptions used herein will be interpreted accordingly.

[0033] A twin-wheel grooving machine includes a machine body, a turntable, a boom, and a gooseneck frame mounted on top of the boom. The boom is mounted on the turntable, and the rotation of the turntable drives the boom to rotate. In related technologies, when encountering situations requiring construction in special grooving sections such as corner grooves, the only method is to lift the milling cutter head from the grooving body above the ground, and adjust the working position and direction of the milling cutter head by rotating the turntable in conjunction with moving the entire machine, which is extremely inefficient.

[0034] In view of the problem, the application provides a double-wheel trenching machine, which is provided with a rotary swing beam on a goose head base body, the rotary swing beam is rotatable relative to the goose head base body, and further drives a milling cutter holder to rotate, so that the construction orientation of the milling cutter holder can be changed in a short time, the operation process during special trench section construction is greatly simplified, and the work efficiency is improved.

[0035] Reference Figures 1 to 5 The application provides a double-wheel trenching machine, which comprises a goose head base body 1, a milling cutter holder 6 and a rotary swing beam 2. The milling cutter holder 6 is used for mounting a milling wheel. The rotary swing beam 2 is rotatably mounted on the goose head base body 1 about a vertical axis. The milling cutter holder 6 is mounted on the rotary swing beam 2 to rotate with the rotary swing beam 2.

[0036] The double-wheel trenching machine of the application is provided with the rotary swing beam 2 rotatable relative to the goose head base body 1 on the goose head base body 1. When the construction position of the milling cutter holder 6 needs to be changed, the milling cutter holder 6 can be directly driven to rotate by controlling the rotation of the rotary swing beam 2, without the need of lifting the milling cutter holder to the ground and controlling the rotation of a rotating table to change, so that the work efficiency is improved.

[0037] As shown in Figure 1 , the goose head base body 1 is fixedly mounted on an arm frame. A first end of the rotary swing beam 2 is rotatably arranged on the goose head base body 1, and a second end of the rotary swing beam 2 is connected with the milling cutter holder 6. Figure 1 and Figure 2 The structure schematic diagram of the double-wheel trenching machine in a first working state is shown, in which the rotary swing beam 2 is perpendicular to the goose head base body 1. The perpendicularity of the rotary swing beam 2 to the goose head base body 1 means that the length direction of the rotary swing beam 2 is perpendicular to the length direction of the goose head base body 1. Figures 3 to 5 The structure schematic diagram of the double-wheel trenching machine in a second working state is shown, in which the rotary swing beam 2 is rotated to a position substantially parallel to the goose head base body 1 (that is, the length direction of the rotary swing beam 2 is substantially parallel to the length direction of the goose head base body 1 or in the same direction), and the milling cutter holder 6 located below the rotary swing beam 2 is also rotated to a position substantially parallel to the goose head base body 1.

[0038] As shown in Figure 1 , the vertical axis extends along a height direction Z. In the first working state, the milling cutter holder 6 extends along a longitudinal direction Y, as shown in Figure 1 , the milling cutter holder 6 is a square frame structure, and the horizontal projection of the milling cutter holder 6 is a rectangle, wherein the extension of the milling cutter holder 6 along the longitudinal direction Y means that the length direction of the horizontal projection of the milling cutter holder 6 extends along the longitudinal direction Y. As shown in Figure 3As shown, in the second working state, the milling cutter holder 6 extends along the transverse direction X, that is, the length direction of the horizontal projection of the milling cutter holder 6 extends along the transverse direction X. The transverse direction X, the longitudinal direction Y and the height direction Z are perpendicular to each other.

[0039] In some embodiments, the double-wheel trencher further comprises a slewing reducer 3 arranged between the goose head base body 1 and the slewing swing beam 2. The slewing reducer 3 is used to drive the slewing swing beam 2 to rotate relative to the goose head base body 1.

[0040] In order to transport the mud generated in the operation process, the double-wheel trencher of the embodiment of the present application further comprises a mud pipe 5, the first end of the mud pipe 5 extends into the interior of the milling cutter holder 6 and is connected with the mud pump, and the second end of the mud pipe 5 forms a discharge end for discharging mud. In order to enable the mud pipe 5 to normally work when the double-wheel trencher switches between the first working state and the second working state. In some embodiments, the double-wheel trencher further comprises a mud pipe 5, a mud pipe support 7 arranged on the goose head base body 1, and a mud pipe guide mechanism 4 for guiding the mud pipe 5. The first end of the mud pipe 5 is connected with the milling cutter holder 6, and the second end of the mud pipe 5 is rested on the mud pipe support 7. The mud pipe guide mechanism 4 is arranged between the mud pipe support 7 and the milling cutter holder 6 for guiding the mud pipe 5, and the mud pipe guide mechanism 4 is rotationally connected to the slewing swing beam 2. The mud pipe guide mechanism 4 is rotationally connected to the slewing swing beam 4, so that when the slewing swing beam 4 rotates, the mud pipe 5 will rotate with the slewing swing beam 4, and the rotation of the mud pipe 5 will exert a force on the mud pipe guide mechanism 4, thereby causing the mud pipe guide mechanism 4 to rotate, so that the position of the mud pipe guide mechanism 4 can change with the position of the mud pipe 5 to normally guide the mud pipe 5. That is, the mud pipe guide mechanism 4 of the embodiment of the present application is rotationally connected to the slewing swing beam 4, so that the mud pipe 5 can be normally guided during the rotation of the slewing swing beam 4 and the switching of the double-wheel trencher between the first working state and the second working state.

[0041] As shown in Figure 6 and Figure 7 In some embodiments, the mud pipe guide mechanism 4 comprises a guide frame 41, a plurality of guide pipes 43 arranged on the guide frame 41, and a rotating shaft 42 arranged at the top end of the guide frame 41. The mud pipe 5 extends along the distribution direction of the plurality of guide pipes 43, and the guide frame 41 is rotationally connected to the slewing swing beam 2 through the rotating shaft 42. As shown in Figure 7 The top end of the guide frame 41 is provided with the rotating shaft 42, which is arranged through the slewing swing beam 2, so that the guide frame 41 can rotate relative to the slewing swing beam 2 under the action of an external force.

[0042] As shown in Figure 7As shown, the guide frame 41 includes two parallel side plates spaced apart and a top plate disposed between the two side plates and used to connect them. A rotating shaft 42 is disposed on the top plate. Multiple guide tubes 43 are arranged along the height direction between the two side plates. Each guide tube 43 has its two ends connected to the two side plates respectively. Specifically, each end of the guide tube 43 is provided with a mounting base 44, which is rotatably mounted on the side plate. A nylon sleeve 45 is provided at the opening of the guide frame 41 to prevent wear on the mud pipe 5 during movement.

[0043] In some embodiments, a plurality of guide tubes 43 are distributed in an arc shape, specifically in an arc shape along the height direction, to guide the mud pipe 5 from high to low.

[0044] like Figure 7 As shown, the bottom edge of the side plate forms an arc-shaped structure. At least two guide tubes 43 are distributed in an arc shape extending along the bottom edge of the side plate. This creates an arc-shaped notch at the bottom of the guide frame 41, thereby preventing the guide frame 41 from interfering with other components.

[0045] like Figure 1 As shown, the mud pipe 5 also needs to be supported by the mud pipe bracket 7. The mud pipe bracket 7 is fixedly connected to the gooseneck frame base 1. That is to say, the position of the mud pipe bracket 7 does not change with the rotation of the rotary swing beam 2. Figure 8 As shown, the mud pipe support 7 includes a support body 71, multiple support rollers 73, and a support shaft 72. The two ends of the support rollers 73 are rotatably connected to the support body 71 via the support shaft 72. Thus, when the mud pipe 5 moves, the support rollers 73 rotate under the action of friction.

[0046] In some embodiments, the twin-wheel grooving machine further includes a feed device 9. The feed device 9 is used to drive the milling cutter holder 6 to move up and down in the height direction.

[0047] In some embodiments, the feeding device 9 includes a drum, a wire rope 91, a first pulley 92 mounted on the gooseneck frame base 1, and a second pulley 94 mounted on the rotary swing beam 2. One end of the wire rope 91 is wound around the drum, and the other end of the wire rope 91 passes sequentially over the first pulley 92 and the second pulley 94 and is connected to the milling cutter holder 6. The second pulley 94 is mounted on the rotary swing beam 2 so that no matter where the rotary swing beam 2 swings, the wire rope 9 can be connected to the milling cutter holder 6 under the guidance of the second pulley 94.

[0048] In some embodiments, the first end of the rotary swing beam 2 is rotatably connected to the goose head frame base 1, and the second pulley 94 is disposed at the second end of the rotary swing beam 2.

[0049] like Figures 1 to 5As shown, the rotary swing beam 2 includes two flat plates stacked in the height direction, and the second pulley 94 is arranged between the two flat plates. The central plane of the second pulley 94 is perpendicular to the vertical axis, that is, the second pulley 94 is horizontally arranged. The central plane of the second pulley 94 is perpendicular to the axis of the second pulley 94.

[0050] The first pulley 92 is arranged on the swivel base 1, and the position of the first pulley 92 is basically fixed. The second pulley 94 is arranged on the rotary swing beam 2, and the position of the second pulley 94 changes with the swing of the rotary swing beam 2. As shown, Figure 3 As shown, the central plane of the first pulley 92 is arranged obliquely relative to the horizontal plane to guide the steel wire rope 91 upward from the bottom end. The central plane of the first pulley 92 is perpendicular to the axis of the first pulley 92. The central planes of the other pulleys are also perpendicular to the axes of the pulleys, which will not be repeated in the following description.

[0051] The central plane of the first pulley 92 is arranged obliquely relative to the vertical axis to extend the steel wire rope upward. The central plane of the second pulley 94 is arranged vertically relative to the vertical axis. The feeding device further includes a third pulley 93 arranged on the swivel base 1. In the extension direction of the steel wire rope 91, the third pulley 93 is arranged between the first pulley 92 and the second pulley 94. The central plane of the third pulley 93 is arranged vertically relative to the vertical axis. In this way, when the steel wire rope 91 extends upward from the drum on the machine body, it first winds around the obliquely arranged first pulley 92 to complete smooth winding, and then winds around the horizontally arranged third pulley 93, and then winds around the second pulley 94. The position of the second pulley 94 changes during the rotation of the rotary swing beam 2, and the arrangement of the third pulley 93 enables the steel wire rope 91 to stably wind around the third pulley 93 after winding around the first pulley 92, thereby improving the stability of the extension path of the steel wire rope 91.

[0052] In some embodiments, the central plane of the second pulley 94 is perpendicular to the vertical axis. The feeding device 9 further includes a fourth pulley 95 arranged on the rotary swing beam 2. The central plane of the fourth pulley 95 is parallel to the vertical axis. The other end of the steel wire rope 91 winds around the second pulley 94, then winds around the fourth pulley 95, and is connected to the cutter holder 6. The fourth pulley 95 is fixedly arranged on the rotary swing beam 2. Specifically, as shown, Figure 6 As shown, the rotary swing beam 2 includes a swing beam base 21 and a connecting bracket 23 arranged on the lower side of the swing beam base 21. In some embodiments, the swing beam base 21 and the connecting bracket 23 are integrally arranged. The fourth pulley 95 is arranged on the connecting bracket 23. The fourth pulley 95 is vertically arranged to guide the steel wire rope 91 to the inner side of the cutter holder 6 in the vertical direction.

[0053] In some embodiments, the feeding device 9 further includes a fifth pulley 97 and a sixth pulley 98 disposed within the cutter holder 6, and a seventh pulley 96 disposed on the rotary swing beam 2 and located above the cutter holder 6. The fifth pulley 97 and the sixth pulley 98 are arranged parallel and spaced apart. The other end of the wire rope 91 passes over a fourth pulley 95, extends into the cutter holder 6, passes over the fifth pulley 97, extends out of the cutter holder 6, passes over the seventh pulley 96, and then extends back into the cutter holder 6, passes over the sixth pulley 98, and extends out to connect with the cutter holder 6. After passing over the fourth pulley 95, the wire rope 91 extends vertically downwards into the cutter holder 6, passes around the fifth pulley 97, extends upwards, and extends out of the cutter holder 6. After passing over the seventh pulley 96, the wire rope 91 extends downwards into the cutter holder 6, passes around the sixth pulley 98, extends out of the cutter holder 6 again, and connects with the connecting bracket.

[0054] The seventh pulley 96 is arranged with its horizontal plane parallel to the vertical axis. The seventh pulley 96 is arranged vertically and is positioned between the fifth pulley 97 and the sixth pulley 98 to guide the wire rope from the fifth pulley 97 to the sixth pulley 98.

[0055] The following is based on Figures 1 to 11 The structure and working process of a twin-wheel grooving machine according to a specific embodiment of the present invention will be described in detail.

[0056] like Figure 1 As shown, the dual-wheel grooving machine of this embodiment includes a goose-head frame base 1, a rotary swing beam 2, a rotary reducer 3, a mud pipe guiding mechanism 4, a mud pipe 5, a milling cutter holder 6, a mud pipe support 7, a hydraulic pipe support 8, a feeding device 9, a hydraulic pipe row 10, a mud pipe baffle 11, and a hydraulic pipe guiding mechanism 13.

[0057] The goose head frame base 1 is an integral welded structure. The rotary reducer 3 is connected to the goose head frame base 1 by bolts. The rotary swing beam 2 is connected to the rotary reducer 3 to rotate around the vertical axis Z under the drive of the rotary reducer 3.

[0058] The rotation center of the rotary swing beam 2 coincides with the geometric center of the projection of the hydraulic tube bank 10 onto the upper plane of the milling cutter holder 6. The mud pipe guiding mechanism 4 rotates freely relative to the rotary swing beam 2 about the vertical axis Z, and is used to guide the mud pipe 5 from the main machine to the milling cutter holder 6. The mud pipe support 7 is used to support the mud pipe 5 and serves as an initial support to assist in guiding the mud pipe 5 into the mud pipe guiding mechanism 4.

[0059] The first end of the rotary swing frame 2 is rotatably connected to the goose head frame base 1. The second end of the rotary swing frame 2 is connected to the milling cutter holder 6.

[0060] like Figure 4As shown in the figure, the hydraulic pipe guiding mechanism 13 is fixed on the swivel head base body 1 by bolt connection, which is used to guide the hydraulic pipe row 10 from the main machine to the cutter holder 6. The hydraulic pipe support 8 is fixed on the swivel head base body 1 by bolt connection, which is used to support the initial stage of the auxiliary guiding hydraulic pipe row 10 into the hydraulic pipe guiding mechanism 13. The first pulley 92 is fixed on the swivel head base body, which is used to guide the initial stage of the steel wire rope 91.

[0061] As shown in the figure, Figure 6 The swivel swing beam 2 includes a swing beam base body 21, a connecting bracket 23 and a guide pin shaft 24. The second pulley 94 is arranged on the swing beam base body 21, the fourth pulley 95 and the seventh pulley 96 are arranged on the connecting bracket 23, and the positions of the fourth pulley 95 and the seventh pulley 96 are designed according to the different directions of the swing beam base body 21 during rotation and are assembled on the swing beam base body 21 to guide the steel wire rope 91 to the cutter holder 6. The corresponding modes of the fourth pulley 95 and the seventh pulley 96 before and after rotation with the pulleys on the cutter holder are unchanged, so as to ensure that the winding mode of the steel wire rope is unchanged before and after rotation, thereby realizing the automatic rotation of the cutter holder 6. The front end of the guide pin shaft 24 is chamfered, which is used for auxiliary guidance when the swivel swing beam 2 is assembled with the swivel head base body 1, and facilitates the hole alignment and fastening during bolt installation.

[0062] As shown in the figure, Figure 7 The mud pipe guiding mechanism 4 includes a guiding rack 41, a rotating shaft 42, a guiding pipe 43, a mounting seat 44 and a nylon sleeve 45. The mud pipe guiding mechanism 4 is used to guide the mud pipe 5 guided by the mud pipe support 7 to the cutter holder 6. The end of the rotating shaft 42 is threaded. The mud pipe guiding mechanism 4 is matched with the bearing horizontally arranged on the swivel swing beam 2 through the rotating shaft 42 and is locked through a round nut. The mud pipe guiding mechanism 4 rotates around the Z-axis direction with the rotating shaft 42 as the axis. The guiding pipe 43 and the mounting seat 44 can rotate around their support shafts and are arranged in a circular arc shape, which are used for supporting and conveying the mud pipe 5 and preventing the mud pipe 5 from being abraded during being pulled by the cutter holder 6.

[0063] As shown in the figure, Figure 8 The mud pipe support 7 includes a support body 71, a plurality of support rollers 73 and a support shaft 72. The mud pipe support 7 is fixed on the swivel head base body 1 by bolts, which is mainly used for auxiliary supporting and guiding the mud pipe 5 to prevent the mud pipe pulled from the main machine from being excessively drooped. The support rollers 73 are made of nylon and are arranged in two rows, which are used to increase the width and prevent the mud pipe 5 from sliding from the side. The support rollers 73 can rotate around the support shaft 72, so that the mud pipe 5 is conveyed on the support rollers 73 and is prevented from being abraded.

[0064] As shown in the figure, Figure 9As shown, the hydraulic pipe support 8 comprises a hydraulic pipe support welded body 81, a hydraulic roller support shaft 82 and a hydraulic roller 83. The hydraulic pipe support 8 is fixed on the goose head base body 1 by bolts, used for the initial stage support of the hydraulic pipe from the main machine to the goose head, preventing the excessive droop of the hydraulic pipe row 10, and the hydraulic roller 83 can rotate around the hydraulic roller support shaft 82 to transfer the hydraulic pipe row 10.

[0065] The steel wire rope 91 enters the goose head from the main machine and passes through the first pulley 92, the third pulley 93, the second pulley 94, the fourth pulley 95, the fifth pulley 97, the seventh pulley 96 and the sixth pulley 98 in turn and is connected with the connecting support 23, which is used for lifting the milling cutter holder 6 and realizes tensioning through the gravity of the milling cutter holder 6 itself.

[0066] As shown, Figure 10 The mud pipe stopper 11 comprises a mud pipe stopper welded body 111, a stopper sleeve 113 and a sleeve mounting seat 112. As shown, Figure 3 When the milling cutter holder 6 performs the rotary operation, the mud pipe stopper 11 is installed, used for limiting and guiding the mud pipe 5 and preventing the interference with other components. The stopper sleeve 113 and the sleeve mounting seat 112 can rotate to prevent the abrasion of the mud pipe 5.

[0067] As shown, Figure 11 The hydraulic pipe guide mechanism 13 comprises a welded body 131, a hydraulic guide wheel support shaft 132 and a hydraulic guide wheel roller 133. The hydraulic pipe guide mechanism 13 is fixed on the goose head base body 1 by bolts, used for guiding the hydraulic pipe row 10 guided by the hydraulic pipe support 8 to the milling cutter holder 6. The hydraulic guide wheel roller 133 can rotate around the hydraulic guide wheel support shaft 132 to realize the transfer of the hydraulic pipe row 10.

[0068] When the special groove section such as the corner groove needs to be constructed, the rotary reducer 3 drives the rotary swing beam 2 to rotate and self-lock. Through the accurate calculation of the direction and position of the first pulley 92, the third pulley 93, the second pulley 94, the fourth pulley 95, the fifth pulley 97, the seventh pulley 96 and the sixth pulley 98, the corresponding mode of the pulleys on the milling cutter holder 6 and the pulleys on the rotary swing beam 2 is unchanged during the rotation, so that the winding mode of the steel wire rope 91 entering the goose head is unchanged, thereby realizing the synchronous rotation of the milling cutter holder 6 and the rotary swing beam 2. When rotating, the mud pipe guide mechanism 4 rotates relative to the rotary swing beam 2 under the driving of the mud pipe 5 and moves to a new position, at this time, the mud pipe stopper 11 needs to be installed to limit and guide the mud pipe 5 and prevent the interference with other components. Since the rotation center of the rotary swing beam 2 coincides with the geometric center of the planar projection of the hydraulic pipe row 10 on the milling cutter holder 6, the position of the hydraulic pipe row 10 is unchanged before and after the rotation of the rotary swing beam 2, thereby ensuring the normal supply of hydraulic oil. The case realizes the rotation of the milling cutter holder 6 through the above-mentioned mode.

[0069] It should be pointed out finally that the above examples are only used to illustrate the technical solutions of the present application but not to limit it; although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the specific embodiments of the present application can be modified or some technical features can be replaced by equivalent ones without departing from the spirit of the technical solutions of the present application, and all of them should be covered in the technical solution range claimed by the present application.

Claims

1. A double-wheel trencher characterized by, The double-wheel trencher comprises: a goose head base body (1); a milling cutter holder (6) for mounting a milling wheel; and a rotary swing beam (2) rotatably mounted on the goose head base body (1) around a vertical axis, and the milling cutter holder (6) is mounted on the rotary swing beam (2) to follow the rotation of the rotary swing beam (2); the double-wheel trencher further comprises a mud pipe (5), a mud pipe support (7) arranged on the goose head base body (1), and a mud pipe guide mechanism (4) for guiding the mud pipe (5), a first end of the mud pipe (5) is connected with the milling cutter holder (6), a second end of the mud pipe (5) is abutted on the mud pipe support (7), the mud pipe guide mechanism (4) is arranged between the mud pipe support (7) and the milling cutter holder (6) for guiding the mud pipe (5), and the mud pipe guide mechanism (4) is rotationally connected with the rotary swing beam (2); the double-wheel trencher further comprises a feeding device (9) for driving the milling cutter holder (6) to ascend and descend in a height direction; the feeding device (9) comprises a winding drum, a steel wire rope (91), a first pulley (92) arranged on the goose head base body (1), and a second pulley (94) arranged on the rotary swing beam (2), one end of the steel wire rope (91) is wound on the winding drum, the other end of the steel wire rope (91) is sequentially wound over the first pulley (92) and the second pulley (94) and connected with the milling cutter holder (6); a central surface of the first pulley (92) is arranged obliquely relative to the vertical axis to extend the steel wire rope (91) upward, a central surface of the second pulley (94) is arranged vertically relative to the vertical axis, the feeding device (9) further comprises a third pulley (93), the third pulley (93) is arranged on the goose head base body (1), and in an extending direction of the steel wire rope (91), the third pulley (93) is arranged between the first pulley (92) and the second pulley (94), a central surface of the third pulley (93) is arranged vertically relative to the vertical axis, so that the steel wire rope (91) is wound over the obliquely arranged first pulley (92) first, then over the horizontally arranged third pulley (93), and then over the second pulley (94).

2. The dual wheel trencher of claim 1, wherein, The double-wheel trencher further comprises a rotary speed reducer (3) arranged between the goose head base body (1) and the rotary swing beam (2).

3. The dual wheel trencher of claim 1, wherein, The mud pipe guide mechanism (4) comprises a guide frame (41), a plurality of guide pipes (43) arranged on the guide frame (41), and a rotating shaft (42) arranged at a top end of the guide frame (41), the mud pipe (5) extends along a distribution direction of the plurality of guide pipes (43), and the guide frame (41) is rotationally connected with the rotary swing beam (2) through the rotating shaft (42).

4. The dual wheel trencher of claim 3, wherein, The plurality of guide pipes (43) are distributed in an arc shape.

5. The dual wheel trencher of claim 1, wherein, The first end of the swing beam (2) is rotatably connected to the swivel frame base (1), and the second pulley (94) is arranged at the second end of the swing beam (2).

6. The dual wheel trencher of claim 1, wherein, The feeding device (9) further comprises a fourth pulley (95) arranged on the swing beam (2), the central plane of the fourth pulley (95) is parallel to the vertical axis, and the other end of the steel wire rope (91) passes through the second pulley (94) and then passes through the fourth pulley (95) and is connected to the milling cutter holder (6), the swing beam (2) comprises a swing beam base (21) and a connecting bracket (23) arranged on the lower side of the swing beam base (21), the fourth pulley (95) is arranged on the connecting bracket (23), and the fourth pulley (95) is arranged vertically to guide the steel wire rope (91) in the vertical direction to the inner side of the milling cutter holder (6).

7. The double-wheel trenching machine of claim 6, wherein, The feeding device (9) further comprises a fifth pulley (97) and a sixth pulley (98) arranged in the milling cutter holder (6) and a seventh pulley (96) arranged on the swing beam (2) above the milling cutter holder (6), the fifth pulley (97) and the sixth pulley (98) are arranged in parallel and are spaced apart, the other end of the steel wire rope (91) passes through the fourth pulley (95), extends into the milling cutter holder (6), passes through the fifth pulley (97), extends out of the milling cutter holder (6), passes through the seventh pulley (96), and again extends into the milling cutter holder (6), passes through the sixth pulley (98), and is connected to the milling cutter holder (6), the horizontal plane of the seventh pulley (96) is arranged in parallel to the vertical axis, and the seventh pulley (96) is arranged vertically and between the fifth pulley (97) and the sixth pulley (98) to guide the steel wire rope from the fifth pulley (97) to the sixth pulley (98).

Images