CN215057333U - Tunneling and anchoring machine cutting device and tunneling and anchoring machine - Google Patents

Tunneling and anchoring machine cutting device and tunneling and anchoring machine Download PDF

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Publication number
CN215057333U
CN215057333U CN202121447001.2U CN202121447001U CN215057333U CN 215057333 U CN215057333 U CN 215057333U CN 202121447001 U CN202121447001 U CN 202121447001U CN 215057333 U CN215057333 U CN 215057333U
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oil
cutting
lubricating oil
cutting device
machine
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杨超
张廷寿
闭海云
孟荣飞
何二春
杨晓荣
刘子亮
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China Railway Construction Heavy Industry Group Co Ltd
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China Railway Construction Heavy Industry Group Co Ltd
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Abstract

The utility model discloses an anchor driving machine cutting device and anchor driving machine should dig anchor driving machine cutting device and include: the cutting speed reducer comprises a high-speed shaft assembly and a bevel gear assembly; and the lubricating oil way comprises a lubricating oil pump and a pipeline connected with the lubricating oil pump, and when the high-speed shaft assembly and the bevel gear assembly are positioned at a high position, the lubricating oil pump sends lubricating oil to the gears and the bearings on the upper parts of the high-speed shaft assembly and the bevel gear assembly through the pipeline. The cutting device of the tunneling and anchoring machine adopts the lubricating oil path to lubricate the gear and the bearing of the cutting speed reducer, which are positioned at the upper part when the coal is cut at the high position, so that the abrasion can be reduced, and the service life of the cutting speed reducer is prolonged. The tunneling and anchoring machine comprises the cutting device of the tunneling and anchoring machine and has the same beneficial effects.

Description

Tunneling and anchoring machine cutting device and tunneling and anchoring machine
Technical Field
The utility model relates to an anchor digging equipment technical field, more specifically say, relate to an anchor digging machine cutting device. Furthermore, the utility model discloses still relate to an anchor driving machine including above-mentioned anchor driving machine cutting device.
Background
The tunneling and anchoring integrated machine can perform full-width tunneling, so that the section of the tunnel is formed at one time, and the requirement of a large-sized mine on the rapid tunneling of the large-section tunnel according to the safety regulations is met.
The cutting device is used as a working mechanism of the tunneling and anchoring all-in-one machine, and the performance of the cutting device has important influence on the working performance of the tunneling and anchoring all-in-one machine.
However, in the cutting device in the prior art, the gear and the bearing of the cutting speed reducer on the upper part cannot be lubricated when the coal is cut at a high position, so that the abrasion is serious, and the service life of the cutting speed reducer is shortened.
Therefore, how to prolong the service life of the cutting speed reducer is a problem to be solved urgently by those skilled in the art at present.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing an anchor driving machine cutting device and have this anchor driving machine of anchor driving machine cutting device to solve the problem that gear and bearing that the cutting speed reducer is in upper portion can't obtain the lubrication when the high-order coal that cuts, promote the life of cutting speed reducer.
In order to achieve the above object, the present invention provides the following technical solutions:
a cutting device of a tunneling and anchoring machine comprises:
the cutting speed reducer comprises a high-speed shaft assembly and a bevel gear assembly;
and the lubricating oil path comprises a lubricating oil pump and a pipeline connected with the lubricating oil pump, and when the high-speed shaft assembly and the bevel gear assembly are positioned at high positions, the lubricating oil pump sends lubricating oil to gears and bearings on the upper parts of the high-speed shaft assembly and the bevel gear assembly through the pipeline.
Preferably, the lubricating oil pump is arranged inside the cutting speed reducer, an oil inlet of the lubricating oil pump is connected with an oil suction pipe, and an inlet of the oil suction pipe extends into gear oil in the cutting speed reducer.
Preferably, the pipeline comprises an oil pipe, a lubricating oil suction pipeline and a lubricating oil return pipeline which are sequentially connected, the oil pipe is connected with an oil outlet of the lubricating oil pump, and the lubricating oil return pipeline extends to the gears and bearings on the upper portions of the high-speed shaft assembly and the bevel gear assembly.
Preferably, a lubricating oil suction pipeline and a lubricating oil return pipeline are arranged between the lubricating oil suction pipeline and the lubricating oil return pipeline, and the lubricating oil suction pipeline comprises:
a pressure sensor for detecting a pressure of the lubricating oil;
a temperature sensor for detecting the temperature of the lubricating oil.
Preferably, the input end of the cutting speed reducer is connected with the output shaft of the single cutting motor.
Preferably, the telescopic oil path for driving the telescopic roller of the cutting device of the driving and anchoring machine to stretch comprises an extending oil path and a retracting oil path;
the hydraulic oil extending out of the oil way sequentially passes through a hydraulic oil inlet pipe joint, a speed reducer middle shell of the cutting speed reducer, a first-stage planet carrier of the cutting speed reducer, a hydraulic oil inlet path, a central channel of a high-pressure oil pipe, a spacer block, a hydraulic oil cylinder mounting seat, a balance valve and a hydraulic oil cylinder;
the hydraulic oil of the retraction oil way sequentially passes through a hydraulic oil return pipe joint, the speed reducer middle shell, the first-stage planet carrier, the hydraulic oil return path, the interlayer channel of the high-pressure oil pipe, the bush component, the balance valve and the hydraulic oil cylinder.
Preferably, the high-pressure oil pipe is in threaded connection with the first-stage planet carrier, the high-pressure oil pipe comprises a left-end high-pressure oil pipe and a right-end high-pressure oil pipe, the pipe thread of the left-end high-pressure oil pipe rotates leftwards, and the pipe thread of the right-end high-pressure oil pipe rotates rightwards.
Preferably, cutting teeth of a drum at the left end of the cutting device of the tunneling and anchoring machine are arranged according to two right-handed spiral lines; cutting teeth of a right-end roller of the cutting device of the tunneling and anchoring machine are arranged according to two left-handed spiral lines.
Preferably, a left fixed roller of the cutting device of the tunneling and anchoring machine is connected with the cutting speed reducer through a right-handed screw; and a right fixed roller of the cutting device of the driving and anchoring machine is connected with the cutting speed reducer through a left-handed screw.
A tunneling and anchoring machine comprises a cutting device, wherein the cutting device is any one of the cutting devices of the tunneling and anchoring machine.
The utility model provides a dig anchor machine cutting device adopts lubricated oil circuit to lubricate the gear and the bearing that the cutting speed reducer is in upper portion when the high-order coal cutting, consequently, can reduce wear, promotes the life of cutting speed reducer.
The utility model provides an anchor driving machine, including the above-mentioned anchor driving machine cutting device, have above-mentioned beneficial effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a top view of a cutting device of an anchor driving machine according to an embodiment of the present invention;
FIG. 2 is a sectional view taken along line A-A of FIG. 1;
FIG. 3 is a left side view of FIG. 2;
FIG. 4 is an enlarged view of B in FIG. 3;
fig. 5 is an enlarged view of C in fig. 3.
The reference numerals in fig. 1 to 5 are as follows:
1 is a cutting speed reducer, 11 is a high-speed shaft assembly, 12 is a bevel gear assembly, 13 is a speed reducer middle shell, 14 is a first-stage planet carrier, 21 is a lubricating oil pump, 22 is an oil suction pipe, 23 is an oil pipe, 24 is a lubricating oil suction pipeline, 25 is a lubricating oil return pipeline, 26 is a pressure sensor, 27 is a temperature sensor, 3 is a cutting motor, 41 is a hydraulic oil inlet pipe joint, 42 is a hydraulic oil inlet pipeline, 43 is a high-pressure oil pipe, 431 is a hollow inner pipe, 432 is a sleeve, 44 is a spacer block, 45 is a hydraulic oil cylinder mounting seat, 451 is a hydraulic oil cylinder, 46 is a balance valve, 47 is a hydraulic oil return pipe joint, 48 is a hydraulic oil return circuit, 49 is a bush assembly, 51 is a left fixed roller, 52 is a left telescopic roller, 53 is a right fixed roller, 54 is a right telescopic roller, 55 is a middle left roller, 56 is a middle right roller, 61 is a left-handed screw, 62 is a right screw, 7 is a flat key, a left-handed screw, a right screw is a right screw, a left screw, a right screw is a right screw, a left screw, a right screw is connected with a left screw, a right screw is connected with a left screw, a right screw is connected with a right screw, a left screw, a right screw is connected with a left screw, a right screw is connected with a right screw, a right screw is connected with a left screw, a right screw is connected with a right screw, a left screw, a right screw is connected with a right screw, a left screw, a right screw is connected with a right screw, a left screw, a right screw, 8 is a main frame, 9 is a spline shaft.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The core of the utility model is to provide an anchor driving machine cutting device and have this anchor driving machine cutting device's anchor driving machine to solve the problem that gear and bearing that the cutting speed reducer is in upper portion can't obtain the lubrication when the high-order coal that cuts, promote the life of cutting speed reducer.
Referring to fig. 1-5, fig. 1 is a top view of a cutting device of an anchor driving machine according to an embodiment of the present invention; FIG. 2 is a sectional view taken along line A-A of FIG. 1; FIG. 3 is a left side view of FIG. 2; FIG. 4 is an enlarged view of B in FIG. 3; fig. 5 is an enlarged view of C in fig. 3.
The utility model provides a dig anchor machine cutting device, including cutting speed reducer 1 and lubricated oil circuit.
Specifically, as shown in fig. 1, the cutting speed reducer 1 includes a high-speed shaft assembly 11 and a bevel gear assembly 12, and the high-speed shaft assembly 11 and the bevel gear assembly 12 are in transmission connection to transmit power.
The lubricating oil path includes a lubricating oil pump 21 and a pipe connected to the lubricating oil pump 21, and the lubricating oil pump 21 supplies lubricating oil to the upper gears and bearings of the high-speed shaft assembly 11 and the bevel gear assembly 12 through the pipe when the high-speed shaft assembly 11 and the bevel gear assembly 12 are in the high position.
It can be understood that when the coal is cut by the driving and anchoring machine, the cutting device of the driving and anchoring machine is turned over from top to bottom to cut the coal, so that the cutting speed reducer 1 is defined to be in a high position when positioned at the middle upper part.
Therefore, the utility model provides a dig anchor machine cutting device adopts lubricated oil circuit to lubricate the gear and the bearing that cut speed reducer 1 is in upper portion when the high-order coal that cuts, consequently, can reduce wearing and tearing, promotes the life of cutting speed reducer 1.
In view of convenience of supplying oil to the lubricating oil pump 21, on the basis of the above embodiment, the lubricating oil pump 21 is disposed inside the cutting speed reducer 1, an oil inlet of the lubricating oil pump 21 is connected to the oil suction pipe 22, and an inlet of the oil suction pipe 22 extends into the gear oil in the cutting speed reducer 1.
It will be appreciated that the interior of the cutting reducer 1 has a cavity for containing gear oil to lubricate the gears and bearings of the high speed shaft assembly 11 and the bevel gear assembly 12, and that the gear oil is located at the bottom of the cavity under the action of gravity when the cutting reducer 1 is in the high position.
In the embodiment, the lubricating oil pump 21 is arranged inside the cutting speed reducer 1, and the oil suction pipe 22 extends into the gear oil at the bottom inside the cutting speed reducer 1, so that the lubricating oil pump 21 sends the gear oil at the bottom inside the cutting speed reducer 1 to the upper gears and bearings of the high-speed shaft assembly 11 and the bevel gear assembly 12, and the gears and bearings of the high-speed shaft assembly 11 and the bevel gear assembly 12 are fully lubricated by the gear oil inside the cutting speed reducer 1.
Therefore, the arrangement mode enables the whole structure to be simple and oil supply to be convenient.
Further, in consideration of the specific layout of the lubricating oil path, on the basis of the above embodiment, the pipeline includes an oil pipe 23, a lubricating oil suction pipeline 24 and a lubricating oil return pipeline 25 which are connected in sequence, the oil pipe 23 is connected with an oil outlet of the lubricating oil pump 21, and the lubricating oil return pipeline 25 extends to the upper gears and bearings of the high-speed shaft assembly 11 and the bevel gear assembly 12.
That is, in this embodiment, after the lubricant oil comes out from the lubricant oil pump 21, the lubricant oil enters and lubricates the oil suction pipe 24 through the oil pipe 23, then the lubricant oil is sent to the lubrication oil return pipe 25 through the lubrication oil suction pipe 24, and finally the lubricant oil comes out from the lubrication oil return pipe 25 and hits the gears and bearings of the high-speed shaft assembly 11 and the bevel gear assembly 12 which are located at the upper part.
Further, in order to timely control the temperature of the lubricating oil and the operating state of the lubricating oil pump 21, on the basis of the above embodiment, a pressure sensor 26 and a temperature sensor 27 are disposed between the lubricating oil suction pipeline 24 and the lubricating oil return pipeline 25, the pressure sensor 26 is used for detecting the pressure of the lubricating oil, and the temperature sensor 27 is used for detecting the temperature of the lubricating oil.
It is understood that the pressure sensor 26 can detect the pressure of the lubricating oil as the lubricating oil flows through the pressure sensor 26, so that the operating state of the lubricating oil pump 21 can be monitored in real time.
When the lubricating oil flows through the temperature sensor 27, the temperature sensor 27 can detect the temperature of the lubricating oil, so that the temperature of the lubricating oil can be monitored in real time, for example, when the lubricating oil is supplied by the gear oil in the cutting speed reducer 1, the oil temperature of the gear oil can be fed back in time.
In view of the motion stability of the cutting reducer 1, on the basis of the above-described embodiment, the input end of the cutting reducer 1 is connected to the output shaft of the single cutting motor 3.
That is, the present embodiment adopts a single motor to provide power for the cutting speed reducer 1, so as to ensure the stability of the movement of the cutting speed reducer 1.
Preferably, the fixing part of the cutting motor 3 is fixedly connected with the main frame 8, and the output shaft of the cutting motor 3 is connected with the high-speed shaft of the high-speed shaft assembly 11 of the cutting speed reducer 1 through a spline shaft 9.
In addition, in view of the implementation of the telescopic function of the telescopic drum of the cutting device of the tunneling and anchoring machine, on the basis of the above embodiment, the telescopic oil path for driving the telescopic drum of the cutting device of the tunneling and anchoring machine to stretch comprises an extension oil path and a retraction oil path, the extension oil path is used for realizing the extension of the telescopic drum, and the retraction oil path is used for realizing the retraction of the telescopic drum.
The hydraulic oil extending out of the oil path sequentially passes through the hydraulic oil inlet pipe joint 41, the speed reducer middle shell 13 of the cutting speed reducer 1, the first-stage planet carrier 14 of the cutting speed reducer 1, the hydraulic oil inlet path 42, the central channel of the high-pressure oil pipe 43, the spacer block 44, the hydraulic oil cylinder mounting seat 45, the balance valve 46 and the hydraulic oil cylinder 451.
The hydraulic oil in the retraction oil circuit passes through a hydraulic oil return pipe joint 47, the speed reducer middle shell 13, the primary planet carrier 14, a hydraulic oil return circuit 48, an interlayer channel of the high-pressure oil pipe 43, a bushing assembly 49, a balance valve 46 and a hydraulic oil cylinder 451 in sequence.
It should be noted that the speed reducer middle housing 13, the primary planet carrier 14, the spacer block 44, the hydraulic cylinder mounting seat 45, the bushing assembly 49, the balance valve 46 and the hydraulic cylinder 451 are all conventional structures of a cutting device of a conventional excavator and anchor machine in the prior art, and no further description is provided herein.
The hydraulic oil feed pipe joint 41, the hydraulic oil feed path 42, the hydraulic oil return path 48, and the high-pressure oil pipe 43 are pipelines for circulating hydraulic oil of the telescopic oil path.
As shown in fig. 5, preferably, the high-pressure oil pipe 43 includes a hollow inner pipe 431 and a sleeve 432, which are coaxially disposed, and are welded and fixed with a certain gap therebetween, and an inner hole of the hollow inner pipe 431 forms a central passage of the high-pressure oil pipe 43, and the central passage is connected to the hydraulic oil inlet passage 42; the gap between the hollow inner tube 431 and the sleeve 432 forms a barrier channel of the high-pressure oil pipe 43, which is connected to the hydraulic return 48.
It should be noted that, as shown in fig. 1 and 3, since the cutting drum of the cutting unit of the driving and bolting machine includes the left end drum, the middle drum and the right end drum, the left end drum and the right end drum are preferably symmetrically disposed about the middle drum, in order to ensure the expansion of the left telescopic drum 52 of the left end drum and the right telescopic drum 54 of the right end drum, the number of the extending oil passages and the retracting oil passages are respectively two, and the two extending oil passages and the two retracting oil passages are bilaterally symmetrically disposed.
Wherein, the left end roller comprises a left telescopic roller 52 and a left fixed roller 51; the right end roller comprises a right telescopic roller 54 and a right fixed roller 53; the middle roller includes a middle left roller 55 and a middle right roller 56.
Further, in consideration of fixation of the high-pressure oil pipe 43, it is preferable that, on the basis of the above-described embodiment, the high-pressure oil pipe 43 is screwed with the one-stage carrier 14, and the high-pressure oil pipe 43 includes a left-end high-pressure oil pipe whose pipe thread is left-handed and a right-end high-pressure oil pipe whose pipe thread is right-handed.
Thus, the tightness of the high-pressure oil pipe 43 and the first-stage planet carrier 14 can be ensured in the rotation process of the cutting speed reducer 1.
In addition, in order to ensure the sealing performance at the junction of the high-pressure oil pipe 43 and the first-stage carrier 14, the high-pressure oil pipe 43 and the first-stage carrier 14 are preferably provided with a radial seal and an end face seal to ensure the sealing performance of the high-pressure oil path.
It can be understood that when the cutting device of the tunneling and anchoring machine works, the cutting teeth on the cutting drum rotate and cut into coal rocks, and the coal cutting operation in a roadway is realized. In order to effectively reduce the specific energy consumption per unit and cutting dust of the tunneling and anchoring machine and improve the working efficiency of the tunneling and anchoring machine, on the basis of the embodiment, cutting teeth of a drum at the left end of a cutting device of the tunneling and anchoring machine are arranged according to two right-handed spiral lines; cutting teeth of a right-end roller of the cutting device of the heading and anchoring machine are arranged according to two left-handed spiral lines.
In addition, in order to improve the fastening performance of the left fixed roller 51 and the right fixed roller 53, on the basis of the embodiment, the left fixed roller 51 of the cutting device of the excavator is connected with the cutting speed reducer 1 through a right-handed screw 62; the right fixed roller 53 of the cutting device of the driving and anchoring machine is connected with the cutting speed reducer 1 through a left-handed screw 61.
Thus, the left-hand screw 61 and the right-hand screw 62 can be rotated more and more tightly along with the rotation of the cutting drum, and the tightness of the connection between the left fixed drum 51 and the right fixed drum 53 and the cutting speed reducer 1 can be ensured.
Except that the aforesaid is dug anchor machine cutting device, the utility model discloses still provide an anchor machine of digging, this anchor machine's cutting device is for the anchor machine cutting device of digging that the arbitrary one of the above-mentioned embodiment is disclosed, and the structure of other each parts of this anchor machine of digging please refer to prior art, and this text is no longer repeated.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
It is right above the utility model provides an it introduces in detail to dig anchor machine cutting device and dig anchor machine. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims (10)

1. The utility model provides an anchor driving machine cutting device which characterized in that includes:
the cutting speed reducer (1) comprises a high-speed shaft assembly (11) and a bevel gear assembly (12);
and the lubricating oil path comprises a lubricating oil pump (21) and a pipeline connected with the lubricating oil pump (21), and when the high-speed shaft assembly (11) and the bevel gear assembly (12) are positioned at a high position, the lubricating oil pump (21) sends lubricating oil to gears and bearings of the high-speed shaft assembly (11) and the bevel gear assembly (12) which are positioned at the upper parts through the pipeline.
2. The cutting device of the heading and anchoring machine as claimed in claim 1, wherein the lubricating oil pump (21) is arranged inside the cutting speed reducer (1), an oil inlet of the lubricating oil pump (21) is connected with an oil suction pipe (22), and an inlet of the oil suction pipe (22) extends into gear oil in the cutting speed reducer (1).
3. The cutting device of the heading and anchoring machine as claimed in claim 1, wherein the pipeline comprises an oil pipe (23), a lubricating oil suction pipeline (24) and a lubricating oil return pipeline (25) which are connected in sequence, the oil pipe (23) is connected with an oil outlet of the lubricating oil pump (21), and the lubricating oil return pipeline (25) extends to gears and bearings at the upper parts of the high-speed shaft assembly (11) and the bevel gear assembly (12).
4. The cutting device of the heading and anchoring machine as claimed in claim 3, wherein between the lubricating oil suction pipeline (24) and the lubricating oil return pipeline (25) are provided:
a pressure sensor (26) for detecting the pressure of the lubricating oil;
a temperature sensor (27) for detecting the temperature of the lubricating oil.
5. A tunneling and anchoring machine cutting device according to any one of claims 1-4, characterized in that the input end of the cutting reducer (1) is connected with the output shaft of a single cutting motor (3).
6. The bolting machine cutting device according to any of claims 1-4, wherein the telescopic oil path for driving the telescopic drum of the bolting machine cutting device to telescope comprises an extended oil path and a retracted oil path;
the hydraulic oil extending out of the oil way sequentially passes through a hydraulic oil inlet pipe joint (41), a speed reducer middle shell (13) of the cutting speed reducer (1), a first-stage planet carrier (14) of the cutting speed reducer (1), a hydraulic oil inlet path (42), a central channel of a high-pressure oil pipe (43), a spacer block (44), a hydraulic oil cylinder mounting seat (45), a balance valve (46) and a hydraulic oil cylinder (451);
the hydraulic oil of the oil retracting way sequentially passes through a hydraulic oil return pipe joint (47), the speed reducer middle shell (13), the primary planet carrier (14), a hydraulic oil return way (48), an interlayer channel of the high-pressure oil pipe (43), a bush component (49), the balance valve (46) and the hydraulic oil cylinder (451).
7. The bolting machine cutting device according to claim 6, wherein said high pressure oil pipe (43) is in threaded connection with said primary planet carrier (14), said high pressure oil pipe (43) comprising a left end high pressure oil pipe with a left hand thread and a right end high pressure oil pipe with a right hand thread.
8. The bolting machine cutting device according to any one of claims 1 to 4, wherein cutting picks of a left end drum of the bolting machine cutting device are arranged according to two right-handed spiral lines; cutting teeth of a right-end roller of the cutting device of the tunneling and anchoring machine are arranged according to two left-handed spiral lines.
9. The bolting machine cutting device according to any of claims 1-4, wherein the left fixed drum (51) of the bolting machine cutting device is connected with the cutting reducer (1) through a right-hand screw (62); the right fixing roller (53) of the cutting device of the tunneling and anchoring machine is connected with the cutting speed reducer (1) through a left-handed screw (61).
10. A machine comprising cutting means, characterised in that said cutting means is a cutting means of a machine as claimed in any one of claims 1 to 9.
CN202121447001.2U 2021-06-28 2021-06-28 Tunneling and anchoring machine cutting device and tunneling and anchoring machine Active CN215057333U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121447001.2U CN215057333U (en) 2021-06-28 2021-06-28 Tunneling and anchoring machine cutting device and tunneling and anchoring machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121447001.2U CN215057333U (en) 2021-06-28 2021-06-28 Tunneling and anchoring machine cutting device and tunneling and anchoring machine

Publications (1)

Publication Number Publication Date
CN215057333U true CN215057333U (en) 2021-12-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202121447001.2U Active CN215057333U (en) 2021-06-28 2021-06-28 Tunneling and anchoring machine cutting device and tunneling and anchoring machine

Country Status (1)

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CN (1) CN215057333U (en)

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