CN220161373U - Planer-type milling machine side cutter head supporting mechanism - Google Patents

Abstract

The utility model provides a planer type milling machine side milling head supporting mechanism, and relates to the technical field of milling machines. The supporting mechanism includes: a lower bracket; the middle bracket is arranged on the lower bracket in a sliding manner and is used for supporting the side milling head; the upper bracket is arranged on the middle bracket in a sliding manner and is used for supporting the dust sealing plate; the sliding direction of the middle bracket is the same as that of the upper bracket. The side milling head supporting mechanism of the planer type milling machine can be arranged under the portal frame of the planer type milling machine, a dust sealing plate for protecting and sealing dust on a main shaft and a side milling head arranged on the main shaft can be respectively and slidably conveyed under the main shaft by adopting a double-layer sliding structure, and the side milling head and the dust sealing plate are assembled and disassembled.

Description

Planer-type milling machine side cutter head supporting mechanism

Technical Field

The utility model relates to the technical field of milling machines, in particular to a planer type milling machine side milling head supporting mechanism.

Background

The planer type milling machine is a milling machine with a portal frame and a horizontal long lathe bed. The planer type milling machine can simultaneously process the surface by using a plurality of milling cutters, has higher processing precision and production efficiency, and is suitable for processing the plane and the inclined plane of a large-scale workpiece in batch and mass production. The numerical control planer type milling machine can also process space curved surfaces and some special parts.

In order to further improve the machining efficiency of the planer type milling machine, the planer type milling machine is provided with a side milling head. The side milling head is mainly used for a planer type milling machine, the machining range and adaptability of the planer type milling machine can be increased without changing the machine tool structure, machining which is difficult to finish by a traditional method can be realized, repeated clamping of workpieces can be reduced, and machining precision and efficiency are improved. When installing a side milling head, a side milling head holder is required. The traditional mode is to make a support alone, when needing to use, hang the support on the workstation, install the side cutter head again. However, this has the disadvantage that the support occupies space on the table, resulting in a limited working stroke of the table.

In addition, a rotary arm type side milling head support structure appears in the market, and an utility model patent document with publication number of CN214720911U discloses a side milling head installation positioning device, which comprises a rotary support and an installation seat, wherein one end of the rotary support is connected to the outer end face of a side upright post of a gantry machining center, and the installation seat for placing a side milling head is installed at the other end of the rotary support. However, when the side milling head is installed, the upright post needs to be moved to the limit position far away from the workbench to process the side surface of the workpiece, so that the working space on the side surface of the workbench is occupied.

Disclosure of Invention

In order to solve the problem that a side milling head support occupies a workbench and the peripheral working space of the workbench, the utility model provides a planer type milling head supporting mechanism.

The utility model provides a planer type milling machine side milling head supporting mechanism, which comprises:

a lower bracket;

the middle bracket is arranged on the lower bracket in a sliding manner and is used for supporting the side milling head;

the upper bracket is arranged on the middle bracket in a sliding manner and is used for supporting the dust sealing plate;

the sliding direction of the middle bracket is the same as that of the upper bracket.

The side milling head supporting mechanism of the planer type milling machine can be arranged under the portal frame of the planer type milling machine, a dust sealing plate for protecting and sealing dust on a main shaft and a side milling head arranged on the main shaft can be respectively and slidably conveyed under the main shaft by adopting a double-layer sliding structure, and the side milling head and the dust sealing plate are assembled and disassembled.

Optionally, the lower carriage top is equipped with first slide rail, well support bottom be equipped with first slide rail matched with first slider, first slider slip set up in thereby on the first slide rail allow well support can follow the axis direction of first slide rail slides.

Through setting up first slide rail and first slider, can realize the reciprocal slip of well support on the lower carriage, and then drive side cutter head, the upper bracket on the well support and locate the dust sealing board on the upper bracket and remove together, realize the aversion of side cutter head and dust sealing board.

Optionally, the telescopic device further comprises a first air cylinder, wherein the first air cylinder is fixed on the lower bracket through a first air cylinder mounting frame, and a telescopic rod of the first air cylinder is fixedly connected with the middle bracket through a first air cylinder connecting plate.

The first cylinder is arranged between the lower bracket and the middle bracket, so that the middle bracket can be driven to slide back and forth along the axial direction of the first sliding rail.

Optionally, the top of the middle support is provided with a second sliding rail, the bottom of the upper support is provided with a second sliding block matched with the second sliding rail, and the second sliding block is slidably arranged on the second sliding rail so as to allow the upper support to slide along the axial direction of the second sliding rail.

Through setting up second slide rail and second slider, can realize the reciprocal slip of upper bracket on the well support, and then drive the upper bracket and locate the dust sealing board on the upper bracket and remove together, realize the aversion of dust sealing board.

Optionally, the device further comprises a second air cylinder, wherein the second air cylinder is fixed on the middle support through a second air cylinder mounting frame, and a telescopic rod of the second air cylinder is fixedly connected with the upper support through a second air cylinder connecting plate.

The second cylinder is arranged between the middle bracket and the upper bracket, so that the upper bracket can be driven to slide back and forth along the axial direction of the second sliding rail.

Optionally, a holding cavity for holding the side milling head is arranged in the middle bracket, two keys with collinear central axes are arranged on the end face of one end of the side milling head, and a strip-shaped groove arranged along the vertical direction is arranged on the inner side wall of the holding cavity and used for inserting the two keys.

Through set up with two key assorted bar groove at holding the intracavity wall, can make the side mill head get into and hold the chamber back and carry out spacingly to holding the chamber tip, restriction side mill head takes place to rotate and deviate from normal position under the vibrations of other parts.

Optionally, a buffer assembly is further included, the buffer assembly including: sleeve, buffer spring, buffer rod and buffer block, the sleeve set up in the well support outside, buffer spring set up in the sleeve, buffer spring's one end with the sleeve inner wall links to each other, the other end with the one end of buffer rod links to each other, the other end of buffer rod stretch out the sleeve outside and with the buffer block links to each other, the upper bracket bottom is equipped with the buffering bump block, and can be in the upper bracket orientation is close to when the direction of buffer assembly slides with buffer block looks butt.

When the upper bracket slides towards the direction close to the buffer assembly, the buffer collision block is abutted against the buffer block, kinetic energy is transferred to the buffer block and the buffer rod, and then the kinetic energy is converted into elastic potential energy of the buffer spring, so that the sliding speed of the upper bracket can be reduced, and the buffer effect on the upper bracket is achieved.

Optionally, the middle support top is close to hold chamber outer fringe department and is equipped with first crashproof piece, the upper bracket is kept away from hold the one end inboard of chamber is equipped with the second crashproof piece, first crashproof piece with the second crashproof piece can be in the dust sealing board slides to the side milling head top is mutual butt, in order to restrict the upper bracket slides.

On the basis of the action of the buffer assembly, the sliding of the upper bracket is further limited by the first anti-collision block and the second anti-collision block, so that the upper bracket can be stopped at a proper position in time, and accurate positioning is realized.

Optionally, a plurality of vertical first pin shafts are arranged at the top of the middle bracket along the outer edge of the accommodating cavity, and a plurality of first pin holes matched with the first pin shafts are arranged on the side milling head.

Through setting up first round pin axle and first pinhole, can accurately fix a position when the side milling head is dismantled from the main shaft and fall into the holding intracavity of well support, and can not slide or dislocation.

Optionally, a plurality of vertical second pin shafts are arranged at the top of the upper bracket, and a plurality of second pin holes matched with the second pin shafts are arranged at the bottom of the dust sealing plate.

Through setting up second round pin axle and second pinhole, can be when sealing the dirt board and dismantle from the main shaft accurate location on the upper bracket, and can not slide or dislocation.

In summary, the present utility model includes at least one of the following beneficial effects:

1. the side milling head supporting mechanism of the planer type milling machine can be arranged under the portal frame of the planer type milling machine, a dust sealing plate for protecting and sealing dust on a main shaft and a side milling head arranged on the main shaft can be respectively and slidably conveyed under the main shaft by adopting a double-layer sliding structure, and the side milling head and the dust sealing plate are assembled and disassembled.

2. Through set up with two key assorted bar groove at holding the intracavity wall, can make the side mill head get into and hold the chamber back and carry out spacingly to holding the chamber tip, restriction side mill head takes place to rotate and deviate from normal position under the vibrations of other parts.

3. When the upper bracket slides towards the direction close to the buffer assembly, the buffer collision block is abutted against the buffer block, kinetic energy is transferred to the buffer block and the buffer rod, and then the kinetic energy is converted into elastic potential energy of the buffer spring, so that the sliding speed of the upper bracket can be reduced, and the buffer effect on the upper bracket is achieved.

Drawings

FIG. 1 is a schematic view of a planer side milling head support mechanism in accordance with one embodiment of the utility model;

FIG. 2 is a schematic view of the milling planer side head support mechanism of FIG. 1 from another perspective;

FIG. 3 is a schematic view of the middle bracket of the support mechanism shown in FIG. 1;

FIG. 4 is a schematic view of a side milling head supported by the support mechanism of FIG. 1;

FIG. 5 is a schematic view of a dust seal plate supported by the support mechanism shown in FIG. 1;

FIG. 6 is a front view of a cushioning assembly of the support mechanism of FIG. 1;

FIG. 7 is a schematic cross-sectional view taken along section line A-A in FIG. 6;

fig. 8 is a schematic view of a planer type milling machine to which the supporting mechanism of the present utility model is applied.

Reference numerals: 100. a support mechanism; 10. a lower bracket; 20. a middle bracket; 21. a receiving chamber; 22. a bar-shaped groove; 23. a first impact block; 24. a first pin; 25. a pin shaft seat; 30. an upper bracket; 31. a second impact block; 32. a second pin; 33. buffering the impact block; 41. a first slide rail; 42. a first slider; 43. a first cylinder; 44. a first cylinder mount; 45. a first cylinder connection plate; 51. a second slide rail; 52. a second slider; 53. a second cylinder; 54. a second cylinder mount; 55. a second cylinder connecting plate; 60. a buffer assembly; 61. a sleeve; 62. a buffer spring; 63. a buffer rod; 64. a buffer block; 80. a side milling head; 81. a key; 82. a first pin hole; 90. a dust sealing plate; 91. a second pin hole; 201. a column; 202. a cross beam; 203. a slide; 204. a work table; 205. a spindle box; 206. a main shaft; 207. and a guide rail.

Detailed Description

Fig. 1 is a schematic perspective view of a planer side milling head support mechanism 100 in accordance with one embodiment of the utility model. The supporting mechanism 100 is used for supporting the side milling head 80 and the dust sealing plate 90, and the dust sealing plate 90 is used for sealing the bottom of the main shaft 206 when the side milling head 80 is not mounted with the main shaft 206, so that dust prevention is facilitated. Referring to fig. 1, the support mechanism 100 may generally include: the device comprises a lower bracket 10, a middle bracket 20, an upper bracket 30, two first sliding rails 41, two second sliding rails 51, four first sliding blocks 42 and four second sliding blocks 52.

As shown in fig. 1, the lower bracket 10, the middle bracket 20 and the upper bracket 30 are arranged in a bottom-up positional relationship. The lower bracket 10 has a substantially cubic structure, first slide rails 41 parallel to each other are respectively provided on both sides of the top of the lower bracket 10 in the longitudinal direction thereof, and four first sliders 42 are respectively provided on both sides of the bottom of the middle bracket 20 in the longitudinal direction thereof. The first slider 42 is made slidable on the first slide rail 41 by mating the first slider 42 with the first slide rail 41, thereby allowing the center support 20 to be slidable in the axial direction of the first slide rail 41.

Fig. 2 is a schematic structural view of the planer-type milling head supporting mechanism 100 shown in fig. 1 from another perspective. As shown in fig. 2, two parallel second sliding rails 51 are respectively disposed on two sides of the top of the upper bracket 30, and four second sliding blocks 52 are respectively disposed on the inner side of the bottom of the upper bracket 30. The second slider 52 can be made to slide on the first slide rail 41 by mating the second slider 52 with the second slide rail 51, thereby allowing the upper bracket 30 to slide in the axial direction of the second slide rail 51. As shown in fig. 2, the second slide rail 51 and the first slide rail 41 are parallel to each other, so that the sliding direction of the middle bracket 20 can be made the same as the sliding direction of the upper bracket 30.

Referring to fig. 1, the middle bracket 20 is used for supporting the side milling head 80, the upper bracket 30 is used for supporting the dust sealing plate 90, so that the displacement of the side milling head 80 can be realized by sliding the middle bracket 20, and the displacement of the dust sealing plate 90 can be realized by sliding the upper bracket 30.

In a preferred embodiment, the support structure further comprises a first cylinder 43 and a second cylinder 53. Referring to fig. 2, a first cylinder 43 is disposed on top of the lower bracket 10 between the two first slide rails 41, and the first cylinder 43 is kept parallel with the two first slide rails 41. The first cylinder 43 includes a first cylinder tube and a first telescopic rod reciprocally movable in the first cylinder tube. Referring to fig. 1, both ends of the first cylinder are respectively fixed at the top of the lower bracket 10 through a first cylinder 43 mounting frame, and one end of the first telescopic rod extending out of the first cylinder is fixed with the middle bracket 20 above the first telescopic rod through a first cylinder 43 connecting plate. Thus, the middle bracket 20 can be reciprocally slid by the reciprocal movement of the first cylinder 43.

Referring to fig. 2, the second air cylinder 53 is provided at one side wall of the middle bracket 20 in its direction and below the second slide rail 51, and the second air cylinder 53 is kept parallel with the second slide rail 51. The second cylinder 53 includes a second cylinder tube and a second telescopic rod reciprocally movable in the second cylinder tube. Referring to fig. 2, both ends of the second cylinder are respectively fixed to the side of the middle bracket 20 through second cylinder 53 mounting frames, and one end of the second telescopic rod extending out of the second cylinder is fixed to the upper bracket 30 above the second telescopic rod through a second cylinder 53 connecting plate. Accordingly, the upper bracket 30 can be reciprocally slid by the reciprocal movement of the second cylinder 53.

Fig. 3 is a schematic structural view of the middle bracket 20 of the supporting mechanism 100 shown in fig. 1. As shown in fig. 3, a housing cavity 21 for housing the side milling head 80 is provided in the middle bracket 20, and a bar-shaped groove 22 is provided on the inner side wall of the housing cavity 21 along the vertical direction. Fig. 4 is a schematic view of a side milling head 80 supported by the support mechanism 100 shown in fig. 1. Referring to fig. 4, the end face of the bottom end of the side milling head 80 is provided with two keys 81 having collinear central axes. In a normal state, one key 81 is located right above the other key 81, and the central axes of the two keys are in a vertical state. To avoid the side milling head 80 rotating in the receiving chamber 21 from being displaced, the side milling head 80 is restricted from rotating in the receiving chamber 21 by inserting two keys 81 into the bar grooves 22.

Referring to fig. 4, a plurality of first pin holes 82 are provided in the bottom end of the top peripheral edge of the side milling head 80. Referring to fig. 3, a plurality of vertical first pins 24 are arranged at the top of the middle bracket 20 along the outer edge of the accommodating cavity 21, and the positions and the number of the first pins 24 are in one-to-one correspondence with the first pin holes 82, so that the first pins 24 are conveniently inserted into the corresponding first pin holes 82 when the side milling head 80 is placed into the accommodating cavity 21, and therefore the side milling head 80 can be accurately positioned and falls into the accommodating cavity 21 of the middle bracket 20 without sliding or dislocation.

In a preferred embodiment, referring to fig. 3, the first pin 24 is secured to the center bracket 20 by a pin mount 25. The pin shaft seat 25 is fixedly connected with the middle bracket 20, and the pin shaft seat 25 is in threaded connection with the first pin shaft 24, so that the height of the first pin shaft 24 can be adjusted by adjusting the rotation amount of the first pin shaft 24 in the pin shaft seat 25, and the first pin shaft 24 is suitable for being adjusted to a proper height for the side milling head 80 to fall into.

Referring to fig. 2, a plurality of vertical second pins 32 are provided at the top of the upper bracket 30. Fig. 5 is a schematic structural view of the dust sealing plate 90 supported by the supporting mechanism 100 shown in fig. 1. Referring to fig. 5, a plurality of second pin holes 91 are provided at the bottom of the dust sealing plate 90 to be matched with the second pin shafts 32. The positions and the number of the second pin shafts 32 are in one-to-one correspondence with the second pin holes 91, so that the second pin shafts 32 can be conveniently inserted into the corresponding second pin holes 91 when the dust sealing plate 90 is placed on the upper bracket 30, and the dust sealing plate 90 can be accurately positioned and falls onto the upper bracket 30 without sliding or misplacement.

As shown in fig. 1, the support mechanism 100 further includes a cushioning assembly 60. Fig. 6 is a front view of the cushioning assembly 60 of the support mechanism 100 of fig. 1; fig. 7 is a schematic cross-sectional view taken along section line A-A in fig. 6. Referring to fig. 7, the buffer assembly 60 includes: sleeve 61, buffer spring 62, buffer rod 63 and buffer block 64. The sleeve 61 is provided outside the middle bracket 20, the buffer spring 62 is provided in the sleeve 61, and one end of the buffer spring 62 is connected to the inner wall of the sleeve 61, and the other end is connected to one end of the buffer rod 63, and the compression direction of the buffer spring 62 is identical to the axial direction of the second rail 207. The end of the buffer rod 63 remote from the buffer spring 62 extends out of the sleeve 61 and is connected to a buffer block 64. Referring to fig. 1, the upper bracket 30 is provided at a bottom end thereof with a buffering block 33, and the bottom end of the buffering block 33 is lower than a central axis position of the buffering block 64. Therefore, when the upper bracket 30 slides in a direction approaching the damper assembly 60, the damper bump 33 can abut against the damper bump 64, so that the kinetic energy of the damper bump 33 is transferred to the damper bump 64 and the damper rod 63, and is further converted into the elastic potential energy of the damper spring 62, thereby reducing the sliding speed of the upper bracket 30 and achieving the damping effect on the upper bracket 30.

Referring to fig. 2, a first anti-collision block 23 is disposed at the top of the middle bracket 20 near the outer edge of the accommodating cavity 21, a second anti-collision block 31 is disposed at the inner side of one end of the upper bracket 30 away from the accommodating cavity 21, and the first anti-collision block 23 and the second anti-collision block 31 can abut against each other when the dust sealing plate 90 slides above the side milling head 80.

On the basis of the buffering of the above-described buffering assembly 60, the sliding speed of the upper bracket 30 is significantly reduced. And the upper bracket 30 can be stopped at a proper position in time by the limitation of the first anti-collision block 23 and the second anti-collision block 31, so that accurate positioning is realized.

In a preferred embodiment of the present utility model, a buffer structure having the same structure and the same principle of action as the above-described buffer assembly 60, the first crash block 23 and the second crash block 31 is also provided between the lower bracket 10 and the middle bracket 20, and will not be described again.

The planer side milling head supporting mechanism 100 of the utility model is suitable for planer. Fig. 8 is a schematic view of a planer type milling machine to which the supporting mechanism 100 of the present utility model is applied. As shown in fig. 8, the planer type milling machine generally includes: portal frame, table 204 and rail 207. The portal frame is formed into a "door" shaped frame by two uprights 201 and a cross member 202. The table 204 is disposed between two parallel guide rails 207, and the bottoms of the two columns 201 are slidably disposed on the two guide rails 207 so as to be slidable along the length direction of the guide rails 207. The cross beam 202 is provided with a slide 203, a spindle box 205 is mounted on the slide 203, and a spindle 206 is mounted at a position below the spindle box 205. As shown in fig. 1, the support mechanism 100 of the present utility model is mounted below the beam 202 of the gantry. The support mechanism 100 can send the side milling head 80 or the dust sealing plate 90 to the right under the spindle box 205 through a double-layer sliding mechanism thereof, so that the side milling head or the dust sealing plate can be connected with or disconnected from the spindle 206.

The following is a specific use procedure of the supporting mechanism 100 according to the present utility model:

when the planer type milling machine needs to perform the side milling process, the dust sealing plate 90 on the main shaft 206 needs to be detached, and the side milling head 80 is installed. The action sequence is as follows:

1. in the initial state, the upper bracket 30 is positioned right above the accommodating cavity 21, the middle bracket 20 provided with the side milling head 80 and the empty upper bracket 30 are driven by the first air cylinder 43 to slide along the direction approaching the workbench 204, the upper bracket 30 is positioned below the main shaft 206, and the dust sealing plate 90 on the main shaft 206 is taken down and placed on the upper bracket 30;

2. then, the upper bracket 30 provided with the dust sealing plate 90 is driven by the second air cylinder 53 to slide along the direction away from the workbench 204, so that the side milling head 80 is positioned below the main shaft 206, and the side milling head 80 and the main shaft 206 are installed to realize head installation;

3. after the head is assembled, the empty middle bracket 20 and the upper bracket 30 with the dust sealing plate 90 are driven by the first air cylinder 43 to slide along the direction away from the workbench 204, and the head returns to the original position, so that the installation of the primary side milling head 80 is completed, and the dust sealing plate 90 is unloaded.

When the planer does not need to perform side milling, the side milling head 80 on the main shaft 206 needs to be detached and the dust sealing plate 90 is mounted. The action sequence is as follows:

1. under the driving of the first air cylinder 43, the empty middle bracket 20 and the upper bracket 30 provided with the dust sealing plate 90 slide along the direction approaching to the workbench 204, so that the accommodating cavity 21 of the middle bracket 20 is positioned below the main shaft 206 (at the moment, the upper bracket 30 is still positioned at one end far away from the accommodating cavity 21), and the side milling head 80 is detached from the main shaft 206 and is placed into the accommodating cavity 21;

2. after the head is removed, the upper bracket 30 is driven by the second air cylinder 53 to slide along the direction approaching the workbench 204, so that the upper bracket 30 is positioned below the main shaft 206, and the dust sealing plate 90 is taken out from the upper bracket 30 and is arranged on the main shaft 206;

3. the middle bracket 20 with the side milling head 80 and the empty upper bracket 30 are driven by the first air cylinder 43 to slide along the direction away from the workbench 204, and return to the original position, so that the primary side milling head 80 is unloaded, the dust sealing plate 90 is installed, and the supporting mechanism 100 returns to the original state.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (10)

1. The utility model provides a planer-type milling machine side cutter head supporting mechanism which characterized in that includes:

a lower bracket (10);

the middle bracket (20) is arranged on the lower bracket (10) in a sliding manner, and the middle bracket (20) is used for supporting the side milling head (80);

the upper bracket (30) is arranged on the middle bracket (20) in a sliding manner, and the upper bracket (30) is used for supporting the dust sealing plate (90);

wherein the sliding direction of the middle bracket (20) is the same as the sliding direction of the upper bracket (30).

2. The planer-type milling head supporting mechanism as claimed in claim 1, wherein a first sliding rail (41) is arranged at the top of the lower bracket (10), a first sliding block (42) matched with the first sliding rail (41) is arranged at the bottom of the middle bracket (20), and the first sliding block (42) is slidably arranged on the first sliding rail (41) so as to allow the middle bracket (20) to slide along the axial direction of the first sliding rail (41).

3. The planer-type milling head supporting mechanism as claimed in claim 1, further comprising a first air cylinder (43), wherein the first air cylinder (43) is fixed on the lower bracket (10) through a first air cylinder (43) mounting frame, and a telescopic rod of the first air cylinder (43) is fixedly connected with the middle bracket (20) through a first air cylinder (43) connecting plate.

4. A planer-type milling head supporting mechanism as claimed in claim 3 wherein a second slide rail (51) is arranged at the top of the middle support (20), a second slide block (52) matched with the second slide rail (51) is arranged at the bottom of the upper support (30), and the second slide block (52) is slidably arranged on the second slide rail (51) so as to allow the upper support (30) to slide along the axial direction of the second slide rail (51).

5. The planer-type milling head supporting mechanism as claimed in claim 4, further comprising a second air cylinder (53), wherein the second air cylinder (53) is fixed on the middle support (20) through a second air cylinder (53) mounting frame, and a telescopic rod of the second air cylinder (53) is fixedly connected with the upper support (30) through a second air cylinder (53) connecting plate.

6. The planer type milling head supporting mechanism as claimed in claim 1, wherein a containing cavity (21) for containing the side milling head (80) is arranged in the middle bracket (20), two keys (81) with collinear central axes are arranged on one end face of the side milling head (80), and a strip-shaped groove (22) arranged along the vertical direction is arranged on the inner side wall of the containing cavity (21) and used for inserting the two keys (81).

7. The planer side milling head support mechanism of claim 6 further including a buffer assembly (60), the buffer assembly (60) comprising: sleeve (61), buffer spring (62), buffer rod (63) and buffer piece (64), sleeve (61) set up in the support (20) outside, buffer spring (62) set up in sleeve (61), one end of buffer spring (62) with sleeve (61) inner wall links to each other, the other end with one end of buffer rod (63) links to each other, the other end of buffer rod (63) stretch out sleeve (61) outside and with buffer piece (64) link to each other, upper bracket (30) bottom is equipped with buffering bump piece (33), and can be in upper bracket (30) towards being close to when the direction of buffer assembly (60) slides with buffer piece (64) looks butt.

8. The planer-type milling head supporting mechanism as claimed in claim 7, wherein a first anti-collision block (23) is arranged at the top of the middle bracket (20) close to the outer edge of the accommodating cavity (21), a second anti-collision block (31) is arranged at the inner side of one end of the upper bracket (30) far away from the accommodating cavity (21), and the first anti-collision block (23) and the second anti-collision block (31) can mutually abut against each other when the dust sealing plate (90) slides to the position above the side milling head (80) so as to limit the sliding of the upper bracket (30).

9. The planer type milling head supporting mechanism as claimed in claim 6, wherein a plurality of vertical first pin shafts (24) are arranged at the top of the middle bracket (20) along the outer edge of the accommodating cavity (21), and a plurality of first pin holes (82) matched with the first pin shafts (24) are arranged on the side milling head (80).

10. The planer side milling head supporting mechanism as claimed in any one of claims 1-9, wherein a plurality of vertical second pin shafts (32) are arranged at the top of the upper bracket (30), and a plurality of second pin holes (91) matched with the second pin shafts (32) are arranged at the bottom of the dust sealing plate (90).