CN217841639U - Rear support structure and heading machine - Google Patents
Rear support structure and heading machine Download PDFInfo
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- CN217841639U CN217841639U CN202220973208.1U CN202220973208U CN217841639U CN 217841639 U CN217841639 U CN 217841639U CN 202220973208 U CN202220973208 U CN 202220973208U CN 217841639 U CN217841639 U CN 217841639U
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Abstract
The utility model discloses a back bearing structure and entry driving machine relates to and synthesizes digger technical field, and the main objective is that the main objective improves the complete machine stability and the cut operation ability of entry driving machine, reduces manufacturing cost. The utility model discloses a main technical scheme does: the rear support structure comprises a rear support frame; the first rear supporting leg is rotatably connected with one side of the rear supporting frame; the first rear supporting leg and the second rear supporting leg can rotate in the direction far away from or close to the rear supporting frame along the horizontal direction; the first driving part is arranged on the rear supporting frame and is respectively connected with the first rear supporting leg and the second rear supporting leg to drive the first rear supporting leg and the second rear supporting leg to rotate.
Description
Technical Field
The utility model relates to a combine equipment technical field of digging particularly, relates to a back bearing structure and entry driving machine.
Background
The cutting head of the heading machine can generate reaction force in the cutting operation process, so that the heading machine generates large-amplitude vibration, side inclination and the like, and the cutting capability of the heading machine is influenced.
At present, the stability of the whole machine is usually improved by increasing the weight of the whole machine or additionally arranging a side support mechanism, however, the manufacturing cost of the development machine is higher due to the increase of the weight of the whole machine; for the way of adding the side support structure, the structure of the side support mechanism is generally more complicated, and the manufacturing cost is higher.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the utility model provides a back bearing structure and entry driving machine, the main objective improves the complete machine stability and the cutting operation ability of entry driving machine, reduces manufacturing cost.
In order to achieve the above object, the utility model mainly provides the following technical scheme:
in one aspect, an embodiment of the utility model provides a back bearing structure, include:
a rear support frame;
the first rear supporting leg is rotatably connected with one side of the rear supporting frame;
the first rear supporting leg and the second rear supporting leg can rotate in the direction far away from or close to the rear supporting frame along the horizontal direction;
the first driving part is arranged on the rear supporting frame and is respectively connected with the first rear supporting leg and the second rear supporting leg to drive the first rear supporting leg and the second rear supporting leg to rotate.
Further, the first driving part includes:
one end of the first telescopic part is rotatably connected with one side of the rear support frame, and the other end of the first telescopic part is rotatably connected with the first rear support leg;
and one end of the second telescopic part is rotatably connected with the other side of the rear support frame, and the other end of the second telescopic part is rotatably connected with the second rear support leg.
Further, the first telescopic part is obliquely arranged relative to the rear support frame towards the rotating direction of the first rear support leg;
the second telescopic part is obliquely arranged relative to the rear support frame towards the rotating direction of the second rear support leg;
the first telescopic part and the second telescopic part are symmetrically arranged relative to the central line of the rear support frame.
Furthermore, the first telescopic part comprises a first fixed end and a telescopic first telescopic end, the first fixed end is rotatably connected with one side of the rear support frame, and the first telescopic end is rotatably connected with the first rear support leg;
the second telescopic portion comprises a second fixed end and a telescopic second telescopic end, the second fixed end is rotatably connected with the other side of the rear supporting frame, and the second telescopic end is rotatably connected with the second rear supporting leg.
Furthermore, the first rear support leg comprises a first connecting frame and a first support leg body which are mutually rotatably connected, the first connecting frame is rotatably connected with one side of the rear support frame, and the first support leg body can rotate in a direction away from or close to the rear support frame along the vertical direction;
the second rear supporting leg comprises a second connecting frame and a second supporting leg body which are mutually rotatably connected, the second connecting frame is rotatably connected with the other side of the rear supporting frame, and the second supporting leg body can rotate in the direction far away from or close to the rear supporting frame along the vertical direction;
the rear supporting structure further comprises a second driving part, wherein the second driving part is connected with the first supporting leg body and the second supporting leg body respectively and used for driving the first supporting leg body and the second supporting leg body to be opposite to the rear supporting frame to rotate.
Further, the second driving part includes:
one end of the third telescopic part is rotatably connected with the first connecting frame, and the other end of the third telescopic part is rotatably connected with the first supporting leg body;
and one end of the fourth telescopic part is rotatably connected with the second connecting frame, and the other end of the fourth telescopic part is rotatably connected with the second supporting leg body.
Further, the third telescopic part comprises a third fixed end and a telescopic third telescopic end, the third fixed end is rotatably connected with the first connecting frame, and the third telescopic end is rotatably connected with the first supporting leg body;
the fourth telescopic part comprises a fourth fixed end and a telescopic fourth telescopic end, the fourth fixed end is rotatably connected with the second connecting frame, and the fourth telescopic end is rotatably connected with the second supporting leg body.
Further, the first connecting frame and the second connecting frame both comprise a cover plate, and a first side plate and a second side plate which are arranged oppositely, and the cover plate is connected between the first side plate and the second side plate;
the third fixed end is rotatably connected between the first side plate and the second side plate of the first connecting frame, and the cover plate covers the electronic device of the third telescopic part; the fourth fixed end is rotatably connected between the first side plate and the second side plate of the second connecting frame, and the cover plate covers the electronic device of the fourth telescopic part;
the first support leg body is rotatably connected between the first side plate and the second side plate of the first connecting frame; the second support leg body is rotatably connected between the first side plate and the second side plate of the second connecting frame.
On the other hand, the embodiment of the utility model provides a still provides a heading machine, including aforementioned back bearing structure.
Further, the heading machine further comprises:
the shovel plate part, the walking part and the rear support frame are connected with each other;
the maximum distance between the first rear supporting leg and the second rear supporting leg is larger than the width of the shovel plate part and the width of the walking part.
Borrow by above-mentioned technical scheme, the utility model discloses following beneficial effect has at least:
the embodiment of the utility model provides a technical scheme, through rotate the both sides of connecting at the back support frame with first back supporting leg and second back supporting leg, make first back supporting leg and second back supporting leg can follow the horizontal direction and rotate to the direction of keeping away from or being close to back support frame, promptly first back supporting leg and second back supporting leg can stretch out or withdraw to the corresponding side of back support frame under the drive of first drive division, thereby realize changing the side direction span between two back supporting legs, when the entry driving machine cutterhead carries out the cutting operation, first drive division can drive first back supporting leg and second back supporting leg and stretch out to the corresponding side of back support frame, thereby increase the width of complete machine, improve the complete machine stability, and then improve the cutting operation ability of entry driving machine, and, compare in prior art, the utility model provides a technical scheme simple structure and can not increase the complete machine weight of entry driving machine, manufacturing cost has been reduced.
Drawings
Fig. 1 is a schematic structural diagram of a rear support structure at a first viewing angle according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a rear support structure at a second viewing angle according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a rear support structure at a third viewing angle according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a heading machine provided by an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the drawings in the preferred embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the invention. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In the description of the present embodiment, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, should not be construed as limiting the scope of the present embodiment.
As shown in fig. 1, 2 and 4, the embodiment of the present invention provides a rear support structure, including a rear support frame 1; the first rear supporting leg 2 is rotatably connected with one side of the rear supporting frame 1; the second rear supporting leg 3 is rotatably connected with the other side of the rear supporting frame 1, and the first rear supporting leg 2 and the second rear supporting leg 3 can rotate in the direction far away from or close to the rear supporting frame 1 along the horizontal direction; the first driving part is arranged on the rear support frame 1, is respectively connected with the first rear support leg 2 and the second rear support leg 3, and is used for driving the first rear support leg 2 and the second rear support leg 3 to rotate relative to the rear support frame 1. Wherein, the rotation connected mode between first back supporting leg 2 and second back supporting leg 3 and back support frame 1 can have the multiple, for example, can set up the pivot on the back supporting leg that corresponds, sets up the shaft hole in the corresponding position department of back support frame 1 for it is connected with back support frame 1 to rotate through pivot and shaft hole to correspond back supporting leg.
The embodiment of the utility model provides an in, supporting leg 2 behind first and the second can stretch out and support in ground to the corresponding side of rear support frame 1 under the drive effect of first drive division to the realization changes the side direction span of supporting leg 3 behind first back supporting leg 2 and the second, and then realizes increasing the complete machine width of entry driving machine when cutting the operation, improves complete machine stability. And when the width of the whole machine is not required to be increased, the first driving part can drive the first rear supporting leg 2 and the second rear supporting leg 3 to be retracted, so that the size of the whole machine of the tunneling machine is not increased, and the tunneling machine can meet the use requirement of partial small-section roadways. Specifically, the rotation angle range of the first rear supporting leg 2 and the second rear supporting leg 3 may be 0 to 40 degrees, so that the lateral span between the two is reliably adjusted, and the stability of the whole excavator is ensured.
The embodiment of the utility model provides a back bearing structure, through rotating first back supporting leg 2 and the 3 both sides of connecting at back support frame 1 with second back supporting leg, make first back supporting leg 2 and second back supporting leg 3 can follow the horizontal direction and rotate to the direction of keeping away from or being close to back support frame 1, first back supporting leg 2 and second back supporting leg 3 can stretch out or withdraw to the corresponding side of back support frame 1 under the drive of first drive division promptly, thereby realize changing the side direction span between two back supporting legs, when the entry driving machine cutterhead carries out the cutting operation, first drive division can drive behind first back supporting leg 2 and the second supporting leg 3 and stretch out to the corresponding side of back support frame 1, thereby increase the width of complete machine, improve the complete machine stability, and then improve the cutting operation ability of entry driving machine, moreover, compare in prior art, the technical scheme simple structure that the embodiment provided just can not increase the complete machine weight of entry driving machine, and manufacturing cost is reduced.
The structural form of the first driving part can be various, and the first rear supporting leg 2 and the second rear supporting leg 3 can be driven to rotate relative to the rear supporting frame 1. In an alternative embodiment, referring to fig. 1 and 2, the first driving part may include a first telescopic part 4, one end of the first telescopic part 4 is rotatably connected to one side of the rear support frame 1, and the other end of the first telescopic part 4 is rotatably connected to the first rear support leg 2; and one end of the second telescopic part 5 is rotatably connected with the other side of the rear support frame 1, and the other end of the second telescopic part 5 is rotatably connected with the second rear support leg 3.
In the above embodiment, the first driving portion is configured to include the first telescopic portion 4 and the second telescopic portion 5, the first rear support leg 2 is driven to extend or retract by the telescopic motion of the first telescopic portion 4, and the second rear support leg 3 is driven to extend or retract by the telescopic motion of the second telescopic portion 5, so that the lateral spans of the two rear support legs are variable, the structure is simple, and the use is reliable. Specifically, both the first and second telescopic parts 4 and 5 may be cylinders.
In an alternative embodiment, see fig. 1, the first telescopic part 4 is arranged obliquely with respect to the rear support frame 1 to the direction of rotation of said first rear support leg 2; the second telescopic part 5 is arranged obliquely relative to the rear support frame 1 in the direction of rotation of the second rear support leg 3, so that the corresponding rear support leg can be driven smoothly to rotate relative to the rear support frame 1 when the corresponding telescopic part performs telescopic movement, and the required range of rotation angle of each rear support leg can be ensured.
In an alternative embodiment, referring to fig. 1, the first telescoping section 4 and the second telescoping section 5 are symmetrically arranged with respect to the center line of the rear support frame 1, so that the first rear support leg 2 and the second rear support leg 3 can rotate symmetrically with respect to the rear support frame 1, facilitating stable support of the whole heading machine.
In an alternative embodiment, referring to fig. 1, the first telescopic part 4 comprises a first fixed end 41 and a telescopic first telescopic end 42, the first fixed end 41 is rotatably connected with one side of the rear supporting frame 1, and the first telescopic end 42 is rotatably connected with the first rear supporting leg 2; the second telescopic part 5 comprises a second fixed end 51 and a telescopic second telescopic end 52, the second fixed end 51 is rotatably connected with the other side of the rear support frame 1, and the second telescopic end 52 is rotatably connected with the second rear support leg 3.
For the telescopic part, the weight of its fixed end is usually greater than the weight of its telescopic end, for example, the hydro-cylinder, the weight of its cylinder body end is usually greater than the weight of its piston rod end, in the above-mentioned embodiment, through connecting the telescopic end that corresponds the telescopic part with corresponding back supporting leg, connect the fixed end that corresponds the telescopic part with back support frame 1, when the telescopic end that corresponds the telescopic part carries out concertina movement, can be driven by the telescopic end that weight is lighter and correspond back supporting leg rotation, and the corresponding fixed end that weight is heavier can keep motionless or small amplitude movement, so not only can avoid the telescopic part to damage, prolong its life, still be favorable to the smooth drive of telescopic part to back supporting leg.
In an alternative embodiment, referring to fig. 1, 2 and 3, the first rear support leg 2 may include a first connecting frame 21 and a first support leg body 22 which are rotatably connected, the first connecting frame 21 is rotatably connected to one side of the rear support frame 1, and the first support leg body 22 can rotate in a vertical direction to a direction away from or close to the rear support frame 1; the second rear supporting leg 3 comprises a second connecting frame 31 and a second supporting leg body 32 which are rotationally connected with each other, the second connecting frame 31 is rotationally connected with the other side of the rear supporting frame 1, and the second supporting leg body 32 can rotate in the direction far away from or close to the rear supporting frame 1 along the vertical direction; the rear support structure further comprises a second driving part, and the second driving part is connected with the first support leg body 22 and the second support leg body 32 respectively and used for driving the first support leg body 22 and the second support leg body 32 to rotate relative to the rear support frame 1.
In the above embodiment, the second driving part can drive the first supporting leg body 22 to rotate in the vertical direction relative to the first connecting frame 21 or the rear supporting frame 1, and drive the second supporting leg body 32 to rotate in the vertical direction relative to the second connecting frame 31 or the rear supporting frame 1, thereby making the corresponding supporting leg body close to or far away from the rear supporting frame 1 in the vertical direction, and then realizing that the first rear supporting leg 2 and the second rear supporting leg 3 lie down and pack up the action, namely realizing that the corresponding rear supporting leg is from a certain distance to the ground to realize the bottom lying certain distance, thereby realizing the rear supporting function of the whole heading machine.
Specifically, when changing the side direction span between first back supporting leg 2 and the second back supporting leg 3, can stretch out to the corresponding side of back supporting frame 1 along the horizontal direction by first back supporting leg 2 of drive division drive and second back supporting leg 3, then rotate downwards to ground along vertical direction by first supporting leg body 22 of second drive division drive and second supporting leg body 32 again, thereby realize increasing the width of complete machine, improve complete machine stability, and then improve the cut operation ability of entry driving machine.
In the embodiment of the present invention, on the one hand, the first rear supporting leg 2 and the second rear supporting leg 3 can be extended or retracted laterally to the rear supporting frame 1 by the driving action of the first driving part, so as to change the lateral span of the first rear supporting leg 2 and the second rear supporting leg 3, thereby increasing the width of the whole machine; on the other hand, the first rear support leg 2 and the second rear support leg 3 can be moved downward to lie down and to be folded by the driving action of the second driving part, thereby realizing the rear support function of the rear support structure.
The structural form of the second driving part may be various, as long as the first supporting leg body 22 and the second supporting leg body 32 can be driven to rotate relative to the rear support frame 1. In an alternative embodiment, referring to fig. 2 and 3, the second driving portion may include a third telescopic portion 6, one end of the third telescopic portion 6 is rotatably connected to the first connecting frame 21, and the other end of the third telescopic portion 6 is rotatably connected to the first supporting leg body 22; and one end of the fourth telescopic part 7 is rotatably connected with the second connecting frame 31, and the other end of the fourth telescopic part 7 is rotatably connected with the second supporting leg body.
In the above embodiment, the second driving part is provided to include the third telescopic part 6 and the fourth telescopic part 7, the extension or retraction of the first supporting leg body 22 is driven by the telescopic motion of the third telescopic part 6, and the extension or retraction of the second supporting leg body 32 is driven by the telescopic motion of the fourth telescopic part 7, so that the downward lying and retracting actions of the two rear supporting legs are realized, the structure is simple, and the use is reliable. Specifically, the third telescopic part 6 and the fourth telescopic part 7 may be cylinders.
In an alternative embodiment, referring to fig. 2, the third telescopic portion 6 may include a third fixed end 61 and a telescopic third telescopic end 62, the third fixed end 61 is rotatably connected to the first connecting frame 21, and the third telescopic end 62 is rotatably connected to the first supporting leg body 22; the fourth telescopic part 7 comprises a fourth fixed end 71 and a telescopic fourth telescopic end 72, the fourth fixed end 71 is rotatably connected with the second connecting frame 31, and the fourth telescopic end 72 is rotatably connected with the second supporting leg body 32.
For the telescopic part, the weight of its stiff end is usually greater than the weight of its flexible end, for example the hydro-cylinder, the weight of its cylinder body end is usually greater than the weight of its tailpiece of the piston rod, in the above-mentioned embodiment, through connecting the scalable end that corresponds the telescopic part with corresponding supporting leg body, with the stiff end that corresponds the telescopic part being connected with the link, when the flexible end that corresponds the telescopic part carries out concertina movement, can drive corresponding supporting leg body by the flexible end that weight is lighter moves and rotates, and the corresponding stiff end that weight is heavier can keep motionless or small amplitude movement, so not only can avoid the telescopic part to damage, prolong its life, still be favorable to the smooth drive of telescopic part to the back supporting leg.
In order to solve the technical problem that the first rear support leg 2 and the second rear support leg 3 are easily impacted by gangue and the like, and easily collide with electronic devices such as sensors of the third telescopic part 6 and the fourth telescopic part 7, and thus the electronic devices are damaged, in an alternative embodiment, referring to fig. 2 and 3, the first connecting frame 21 and the second connecting frame 31 each include a cover plate 211, and a first side plate 212 and a second side plate 213 which are arranged oppositely, and the cover plate 211 is connected between the first side plate 212 and the second side plate 213; the third fixing end 61 is rotatably connected between the first side plate 212 and the second side plate 213 of the first connecting frame 21, and the cover plate 211 covers the electronic device of the third telescopic part 6; the fourth fixed end 71 is rotatably connected between the first side plate 212 and the second side plate 213 of the second connecting frame 31, and the cover plate 211 covers the electronic device of the fourth expansion part 7; the first supporting leg body 22 is rotatably connected between the first side plate 212 and the second side plate 213 of the first connecting frame 21; the second support leg body 32 is rotatably connected between the first side plate 212 and the second side plate 213 of the second connecting frame 31.
In the above embodiment, the first connecting frame 21 and the second connecting frame 31 are arranged to include the cover plate 211, and the cover plate 211 covers the electronic device of the telescopic portion, so that the cover plate 211 protects the electronic device, prevents gangue and the like from striking the electronic device, prevents the electronic device from being damaged, and ensures normal operation of the electronic device.
Specifically, the ends of the first side plate 212 and the second side plate 213 are connected to each other, and the joint of the two is rotatably connected to the rear support frame 1.
As shown in fig. 4, the embodiment of the present invention further provides a heading machine, including the aforementioned rear support structure.
The embodiment of the utility model provides a heading machine, including back bearing structure, this back bearing structure is through rotating first back supporting leg 2 and the 3 both sides of connecting at back support frame 1 with the back supporting leg of second, make first back supporting leg 2 and the back supporting leg 3 of second can be followed the horizontal direction and rotated to the direction of keeping away from or being close to back support frame 1, first back supporting leg 2 and the back supporting leg 3 of second promptly can stretch out or withdraw to the corresponding side of back support frame 1 under the drive of first drive division, thereby realize changing the side direction span between two back supporting legs, when the heading machine cutterhead carries out the cutting operation, first drive division can drive first back supporting leg 2 and the back supporting leg 3 of second and stretch out to the corresponding side of back support frame 1, thereby increase the width of complete machine, improve the complete machine stability, and then improve the cutting operation ability of heading machine, and furthermore, compare in prior art, the technical scheme simple structure that the embodiment provided just can not increase the complete machine weight of heading machine, and manufacturing cost is reduced.
In an alternative embodiment, referring to fig. 4, the heading machine further comprises a shovel plate part 8 and a walking part 9, wherein the shovel plate part 8, the walking part 9 and the rear support frame 1 are connected with each other; the maximum distance between the first rear supporting leg 2 and the second rear supporting leg 3 is larger than the width of the shovel part 8 and the width of the walking part 9, so that the stability of the whole excavator of the excavator is effectively improved, and the cutting operation capacity of the excavator is better improved.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A rear support structure, comprising:
a rear support frame;
the first rear supporting leg is rotatably connected with one side of the rear supporting frame;
the first rear supporting leg and the second rear supporting leg can rotate in the direction far away from or close to the rear supporting frame along the horizontal direction;
first drive division, set up in on the back support frame, and respectively with support leg is connected after first back support leg and the second, is used for the drive support leg is relative after first back support leg and the second back support frame rotates, in order to adjust lateral span between support leg after first back support leg and the second.
2. The rear support structure according to claim 1, wherein the first driving part includes:
one end of the first telescopic part is rotatably connected with one side of the rear support frame, and the other end of the first telescopic part is rotatably connected with the first rear support leg;
and one end of the second telescopic part is rotatably connected with the other side of the rear support frame, and the other end of the second telescopic part is rotatably connected with the second rear support leg.
3. The rear support structure of claim 2,
the first telescopic part is obliquely arranged relative to the rear support frame towards the rotating direction of the first rear support leg;
the second telescopic part is obliquely arranged relative to the rear support frame towards the rotating direction of the second rear support leg;
the first telescopic part and the second telescopic part are symmetrically arranged relative to the central line of the rear support frame.
4. The rear support structure of claim 2,
the first telescopic part comprises a first fixed end and a telescopic first telescopic end, the first fixed end is rotatably connected with one side of the rear support frame, and the first telescopic end is rotatably connected with the first rear support leg;
the flexible portion of second includes the flexible end of second stiff end and telescopic second, the second stiff end with the opposite side of back support frame is rotated and is connected, the flexible end of second with the support leg rotates behind the second to be connected.
5. Rear support structure according to claim 1,
the first rear supporting leg comprises a first connecting frame and a first supporting leg body which are mutually rotatably connected, the first connecting frame is rotatably connected with one side of the rear supporting frame, and the first supporting leg body can rotate in the direction far away from or close to the rear supporting frame along the vertical direction;
the second rear supporting leg comprises a second connecting frame and a second supporting leg body which are mutually rotatably connected, the second connecting frame is rotatably connected with the other side of the rear supporting frame, and the second supporting leg body can rotate in the direction far away from or close to the rear supporting frame along the vertical direction;
the rear supporting structure further comprises a second driving part, wherein the second driving part is connected with the first supporting leg body and the second supporting leg body respectively and used for driving the first supporting leg body and the second supporting leg body to be opposite to the rear supporting frame to rotate.
6. The rear support structure according to claim 5, wherein the second driving part includes:
one end of the third telescopic part is rotatably connected with the first connecting frame, and the other end of the third telescopic part is rotatably connected with the first supporting leg body;
and one end of the fourth telescopic part is rotatably connected with the second connecting frame, and the other end of the fourth telescopic part is rotatably connected with the second supporting leg body.
7. The rear support structure of claim 6,
the third telescopic part comprises a third fixed end and a telescopic third telescopic end, the third fixed end is rotatably connected with the first connecting frame, and the third telescopic end is rotatably connected with the first supporting leg body;
the fourth telescopic part comprises a fourth fixed end and a telescopic fourth telescopic end, the fourth fixed end is rotatably connected with the second connecting frame, and the fourth telescopic end is rotatably connected with the second supporting leg body.
8. The rear support structure of claim 7,
the first connecting frame and the second connecting frame respectively comprise a cover plate, a first side plate and a second side plate which are arranged oppositely, and the cover plates are connected between the first side plate and the second side plate;
the third fixed end is rotatably connected between the first side plate and the second side plate of the first connecting frame, and the cover plate covers the electronic device of the third telescopic part; the fourth fixed end is rotatably connected between the first side plate and the second side plate of the second connecting frame, and the cover plate covers the electronic device of the fourth telescopic part;
the first support leg body is rotatably connected between the first side plate and the second side plate of the first connecting frame; the second support leg body is rotatably connected between the first side plate and the second side plate of the second connecting frame.
9. A heading machine, comprising:
the rear support structure of any one of claims 1 to 8.
10. The heading machine of claim 9, further comprising:
the shovel plate part, the walking part and the rear support frame are connected with each other; the maximum distance between the first rear supporting leg and the second rear supporting leg is larger than the width of the shovel plate part and the width of the walking part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220973208.1U CN217841639U (en) | 2022-04-25 | 2022-04-25 | Rear support structure and heading machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220973208.1U CN217841639U (en) | 2022-04-25 | 2022-04-25 | Rear support structure and heading machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217841639U true CN217841639U (en) | 2022-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220973208.1U Active CN217841639U (en) | 2022-04-25 | 2022-04-25 | Rear support structure and heading machine |
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| Country | Link |
|---|---|
| CN (1) | CN217841639U (en) |
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2022
- 2022-04-25 CN CN202220973208.1U patent/CN217841639U/en active Active
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