CN112647550A - Track and rail wheel type tunnel repairing machine - Google Patents
Track and rail wheel type tunnel repairing machine Download PDFInfo
- Publication number
- CN112647550A CN112647550A CN202011557902.7A CN202011557902A CN112647550A CN 112647550 A CN112647550 A CN 112647550A CN 202011557902 A CN202011557902 A CN 202011557902A CN 112647550 A CN112647550 A CN 112647550A
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- Prior art keywords
- track
- vehicle body
- body frame
- oil cylinder
- rail
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/30—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom
- E02F3/32—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom working downwardly and towards the machine, e.g. with backhoes
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/30—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom
- E02F3/301—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom with more than two arms (boom included), e.g. two-part boom with additional dipper-arm
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/38—Cantilever beams, i.e. booms;, e.g. manufacturing processes, forms, geometry or materials used for booms; Dipper-arms, e.g. manufacturing processes, forms, geometry or materials used for dipper-arms; Bucket-arms
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/38—Cantilever beams, i.e. booms;, e.g. manufacturing processes, forms, geometry or materials used for booms; Dipper-arms, e.g. manufacturing processes, forms, geometry or materials used for dipper-arms; Bucket-arms
- E02F3/382—Connections to the frame; Supports for booms or arms
- E02F3/384—Connections to the frame; Supports for booms or arms the boom being pivotable relative to the frame about a vertical axis
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/02—Travelling-gear, e.g. associated with slewing gears
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/02—Travelling-gear, e.g. associated with slewing gears
- E02F9/022—Travelling-gear, e.g. associated with slewing gears for moving on rails
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/08—Superstructures; Supports for superstructures
- E02F9/085—Ground-engaging fitting for supporting the machines while working, e.g. outriggers, legs
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Machines For Laying And Maintaining Railways (AREA)
Abstract
The invention belongs to the technical field of application of coal mine roadway excavation equipment, and particularly discloses a track and rail wheel type roadway repairing machine which comprises a vehicle body frame, a track walking part, a supporting mechanism, a power system, a control system, an operation room ceiling and a mechanical arm assembly, wherein the mechanical arm assembly is connected with the vehicle body frame through a rotary speed reducer. The track and rail wheel type tunnel repairing machine has the beneficial effects that: its reasonable in design can be in the tunnel repair operation of carrying out high efficiency, accuracy and safety of different operation faces (muddy operation face or area track operation face), and the operation of being convenient for simultaneously, application scope are wide, and long service life reduces coal exploitation economic cost and drops into, has alleviateed intensity of labour, has improved work efficiency, and the practicality is strong.
Description
Technical Field
The invention belongs to the technical field of application of coal mine roadway excavation equipment, and particularly relates to a track and rail wheel type roadway repairing machine.
Background
Along with the increase of coal mining time, the original tunnel of many mines is influenced by geology, and serious deformation has all appeared in many places in tunnel, and especially the mine that the ore pressure is great, the tunnel warp more seriously, and then needs regularly to restore the tunnel.
The situation that most coal mines are paved with tracks in roadways which are used for transportation work or other old roadways, the situation occurs, most coal mines are cleaned by adopting tools such as a pneumatic drill, an iron pick and the like, the labor intensity is high, some potential safety hazards exist, even if a traditional roadway repairing machine is adopted, the paved tracks are often crushed or the tracks are deformed, other hardened bottom plates are crushed, and finally the work of recovering the tracks and the like is needed manually, so that secondary repeated labor is caused, and time and labor are wasted.
Based on the problems, the invention provides a track and rail wheel type roadway repairing machine.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to overcome the defects of the prior art, and provides a track and rail wheel type roadway repairing machine which is reasonable in design, can perform efficient, accurate and safe roadway repairing operation on different operation surfaces (muddy operation surfaces or operation surfaces with tracks), is convenient to operate, has a wide application range and a long service life, reduces the economic cost investment of coal mining, and is high in practicability.
The technical scheme is as follows: the invention provides a track and rail wheel type roadway repairing machine, which consists of a vehicle body frame, a track walking part and supporting mechanisms, wherein the track walking part is arranged below the vehicle body frame and used for walking on the ground, the supporting mechanisms are arranged at two ends of the vehicle body frame in the walking direction, a power system and a control system are arranged above the vehicle body frame, an operation room ceiling used for protecting the safety of a driver is arranged at the control system, and a mechanical arm assembly is arranged at one end of the vehicle body frame and used in cooperation with the control system, and the mechanical arm assembly is connected with the vehicle body frame through a rotary speed reducer; the mechanical arm assembly comprises a base, a main arm, an auxiliary arm and a functional accessory, wherein the base is connected with a rotary speed reducer, the main arm and a lifting oil cylinder are hinged to the base, the other end of the lifting oil cylinder is connected with the main arm, a main arm oil cylinder and an auxiliary arm are hinged to the main arm, the other end of the main arm oil cylinder is hinged to the auxiliary arm, the auxiliary arm oil cylinder, the functional accessory and a link mechanism are hinged to the auxiliary arm, and the other end of the auxiliary arm oil cylinder is hinged to the link mechanism.
According to the technical scheme, the track and track wheel type roadway repairing machine further comprises a track wheel travelling mechanism which is arranged below the vehicle body frame and used for travelling on the track, wherein the track wheel travelling mechanism comprises a track wheel, a turnover mechanism and a turnover oil cylinder which are matched with each other for use, and the turnover oil cylinder enables the track wheel to support the track to travel through the turnover mechanism.
According to the technical scheme, the track and rail wheel type roadway repairing machine further comprises a supporting mechanism which is arranged on the operating room ceiling and used for supporting the roadway top plate, wherein a lifting cylinder is arranged on the operating room ceiling, and the supporting mechanism is installed on the lifting cylinder.
According to the technical scheme, the power system on the vehicle body frame comprises an explosion-proof motor, a hydraulic pump station and a hydraulic oil tank, the hydraulic pump station is connected with the explosion-proof motor through a coupler, the hydraulic pump station is connected with the control system of the operating platform through a high-pressure rubber pipe, and the control system is connected to each hydraulic execution component through the high-pressure rubber pipe.
According to the technical scheme, the functional accessory is not limited to a bucket or a breaking hammer.
Compared with the prior art, the crawler and rail wheel type tunnel repairing machine has the beneficial effects that: its reasonable in design can be in the tunnel repair operation of carrying out high efficiency, accuracy and safety of different operation faces (muddy operation face or area track operation face), and the operation of being convenient for simultaneously, application scope are wide, and long service life reduces coal exploitation economic cost and drops into, has alleviateed intensity of labour, has improved work efficiency, and the practicality is strong.
Drawings
FIG. 1 is a schematic structural diagram of a track and rail wheel type roadway repair machine of the invention;
fig. 2 is a schematic structural diagram of a track wheel, a track wheel of the track wheel type roadway repairing machine, a turnover mechanism, a turnover oil cylinder and the like.
Detailed Description
The invention is further elucidated with reference to the drawings and the embodiments.
Example one
As shown in fig. 1 and fig. 2, a track and rail wheel type tunnel repairing machine is composed of a vehicle body frame 1, a track walking part 2 arranged below the vehicle body frame 1 and used for walking on the ground, and supporting mechanisms 4 arranged at two ends of the vehicle body frame 1 in the walking direction, wherein a power system 5 and a control system 6 are arranged above the vehicle body frame 1, an operation room ceiling 7 used for protecting the safety of a driver is arranged at the position of the control system 6, and a mechanical arm assembly arranged at one end of the vehicle body frame 1 and used in cooperation with the control system 6, wherein the mechanical arm assembly is connected with the vehicle body frame 1 through a rotary speed reducer 9; the mechanical arm assembly comprises a base 1001, a main arm 1002, an auxiliary arm 1003 and a functional accessory 1005, wherein the base 1001 is connected with a rotary speed reducer 9, the base 1001 is hinged with the main arm 1002 and a lifting oil cylinder 1006, the other end of the lifting oil cylinder 1006 is connected with the main arm 1002, the main arm 1002 is hinged with a main arm oil cylinder 1007 and an auxiliary arm 1003, the other end of the main arm oil cylinder 1007 is hinged with the auxiliary arm 1003, the auxiliary arm oil cylinder 1008, the functional accessory 1005 and a connecting rod mechanism 1004 are hinged on the auxiliary arm 1003, the other end of the auxiliary arm oil cylinder 1008 is hinged with the connecting rod mechanism 1004, the height position of the functional accessory 1005 is adjusted through the lifting oil cylinder 1006, and the forward and backward positions of the walking direction of the functional accessory 1005 are adjusted through the main.
Example two
As shown in fig. 1 and fig. 2, a track and rail wheel type tunnel repairing machine is composed of a vehicle body frame 1, a track walking part 2 arranged below the vehicle body frame 1 and used for walking on the ground, and supporting mechanisms 4 arranged at two ends of the vehicle body frame 1 in the walking direction, wherein a power system 5 and a control system 6 are arranged above the vehicle body frame 1, an operation room ceiling 7 used for protecting the safety of a driver is arranged at the position of the control system 6, and a mechanical arm assembly arranged at one end of the vehicle body frame 1 and used in cooperation with the control system 6, wherein the mechanical arm assembly is connected with the vehicle body frame 1 through a rotary speed reducer 9; the mechanical arm assembly comprises a base 1001, a main arm 1002, an auxiliary arm 1003 and a functional accessory 1005, wherein the base 1001 is connected with a rotary speed reducer 9, the base 1001 is hinged with the main arm 1002 and a lifting oil cylinder 1006, the other end of the lifting oil cylinder 1006 is connected with the main arm 1002, the main arm 1002 is hinged with the main arm 1007 and the auxiliary arm 1003, the auxiliary arm 1003 is hinged with an auxiliary arm oil cylinder 1008, the functional accessory 1005 and a link mechanism 1004, the other end of the auxiliary arm oil cylinder 1008 is hinged with the link mechanism 1004, the height position of the functional accessory 1005 is adjusted through the lifting oil cylinder 1006, the front position and the rear position of the walking direction of the functional accessory 1005 are adjusted through the main arm 1007 and the auxiliary arm oil cylinder 1008, and a rail wheel walking mechanism 3 arranged below a vehicle body frame 1 and used for walking on a rail, the rail wheel walking mechanism 3 comprises a rail wheel 301, a turnover mechanism 302 and a turnover oil cylinder 303 which are matched, the turnover oil cylinder 303 enables the rail wheel 301 to be supported on the rail to run through the turnover mechanism 302.
EXAMPLE III
As shown in fig. 1 and fig. 2, a track and rail wheel type tunnel repairing machine is composed of a vehicle body frame 1, a track walking part 2 arranged below the vehicle body frame 1 and used for walking on the ground, and supporting mechanisms 4 arranged at two ends of the vehicle body frame 1 in the walking direction, wherein a power system 5 and a control system 6 are arranged above the vehicle body frame 1, an operation room ceiling 7 used for protecting the safety of a driver is arranged at the position of the control system 6, and a mechanical arm assembly arranged at one end of the vehicle body frame 1 and used in cooperation with the control system 6, wherein the mechanical arm assembly is connected with the vehicle body frame 1 through a rotary speed reducer 9; the mechanical arm assembly comprises a base 1001, a main arm 1002, an auxiliary arm 1003 and a functional accessory 1005, wherein the base 1001 is connected with a rotary speed reducer 9, the base 1001 is hinged with the main arm 1002 and a lifting oil cylinder 1006, the other end of the lifting oil cylinder 1006 is connected with the main arm 1002, the main arm 1002 is hinged with the main arm 1007 and the auxiliary arm 1003, the auxiliary arm 1003 is hinged with an auxiliary arm oil cylinder 1008, the functional accessory 1005 and a link mechanism 1004, the other end of the auxiliary arm oil cylinder 1008 is hinged with the link mechanism 1004, the height position of the functional accessory 1005 is adjusted through the lifting oil cylinder 1006, the front position and the rear position of the walking direction of the functional accessory 1005 are adjusted through the main arm 1007 and the auxiliary arm oil cylinder 1008, and a rail wheel walking mechanism 3 arranged below a vehicle body frame 1 and used for walking on a rail, the rail wheel walking mechanism 3 comprises a rail wheel 301, a turnover mechanism 302 and a turnover oil cylinder 303 which are matched, the turnover oil cylinder 303 enables the rail wheel 301 to be supported on the rail to run through the turnover mechanism 302, and the supporting mechanism 10 which is arranged on the operating room ceiling 7 and used for supporting the roadway roof is arranged, wherein the operating room ceiling 7 is provided with a lifting cylinder 8, and the supporting mechanism 10 is arranged on the lifting cylinder 8.
In the track and rail wheel type roadway repairing machine in the first or second or third structural embodiment, the power system 5 on the vehicle body frame 1 comprises an explosion-proof motor, a hydraulic pump station and a hydraulic oil tank, the hydraulic pump station is connected with the explosion-proof motor through a coupler, the hydraulic pump station is connected with the control system 6 of the operation platform through a high-pressure rubber pipe, and the control system 6 is connected to each hydraulic execution component through the high-pressure rubber pipe (the explosion-proof motor, the hydraulic pump station, the hydraulic oil tank, the high-pressure rubber pipe and the like are not marked in fig. 1); and the functional attachment 1005 is, but is not limited to, a bucket or a demolition hammer.
The track-rail wheel type roadway repairing machine in the first structural embodiment or the second structural embodiment or the third structural embodiment can perform efficient, accurate and safe roadway repairing operation on different operation surfaces (muddy operation surfaces or operation surfaces with rails), is convenient to operate, wide in application range, long in service life, capable of reducing coal mining economic cost input, reducing labor intensity, improving working efficiency and high in practicability.
The track and rail wheel type roadway repairing machine in the first structural embodiment or the second structural embodiment or the third structural embodiment has the advantages that on one hand, the track and rail wheel type roadway repairing machine is reasonable in design, convenient to operate and high in adaptability, the traveling mechanisms can be rapidly switched after the front supporting mechanism and the rear supporting mechanism of the vehicle body frame are grounded, so that the track and rail wheel type roadway repairing machine is suitable for different traveling pavements, on the other hand, the operation room ceiling and the supporting mechanism are additionally arranged on equipment, and the operation safety of personnel and the stability of the equipment during working are guaranteed.
The foregoing is only a preferred embodiment of this invention and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the invention and these modifications should also be considered as the protection scope of the invention.
Claims (5)
1. The utility model provides a track, rail-wheel formula tunnel repairing machine which characterized in that: the device comprises a vehicle body frame (1), a crawler traveling part (2) arranged below the vehicle body frame (1) and used for traveling on the ground, and supporting mechanisms (4) arranged at two ends of the vehicle body frame (1) in the traveling direction, wherein a power system (5) and a control system (6) are arranged above the vehicle body frame (1), an operation room ceiling (7) used for protecting the safety of a driver is arranged at the control system (6), and a mechanical arm assembly arranged at one end of the vehicle body frame (1) and used in cooperation with the control system (6), wherein the mechanical arm assembly is connected with the vehicle body frame (1) through a rotary speed reducer (9); the mechanical arm assembly comprises a base (1001), a main arm (1002), an auxiliary arm (1003) and a functional accessory (1005), wherein the base (1001) is connected with a rotary speed reducer (9), the base (1001) is hinged with the main arm (1002) and a lifting oil cylinder (1006), the other end of the lifting oil cylinder (1006) is connected with the main arm (1002), the main arm (1002) is hinged with a main arm oil cylinder (1007) and an auxiliary arm (1003), the other end of the main arm oil cylinder (1007) is hinged with the auxiliary arm (1003), the auxiliary arm oil cylinder (1008) is hinged on the auxiliary arm (1003), the functional accessory (1005) and a link mechanism (1004), and the other end of the auxiliary arm oil cylinder (1008) is hinged with the link mechanism (1004).
2. A track, rail-wheel type roadway repair machine as claimed in claim 1, wherein: the track and rail wheel type roadway repairing machine further comprises a rail wheel travelling mechanism (3) which is arranged below the vehicle body frame (1) and used for travelling on the track, the rail wheel travelling mechanism (3) comprises a rail wheel (301), a turnover mechanism (302) and a turnover oil cylinder (303) which are matched with each other for use, and the turnover oil cylinder (303) enables the rail wheel (301) to be supported by the turnover mechanism (302) to travel on the track.
3. A track, rail-wheel type roadway repair machine as claimed in claim 1 or 2, wherein: the track and rail wheel type roadway repairing machine further comprises a supporting mechanism (10) which is arranged on the operating room ceiling (7) and used for supporting a roadway top plate, wherein a lifting cylinder (8) is arranged on the operating room ceiling (7), and the supporting mechanism (10) is installed on the lifting cylinder (8).
4. A track, rail-wheel type roadway repair machine as claimed in claim 1, wherein: the power system (5) on the vehicle body frame (1) comprises an explosion-proof motor, a hydraulic pump station and a hydraulic oil tank, the hydraulic pump station is connected with the explosion-proof motor through a coupler, the hydraulic pump station is connected with the control system (6) of the operating platform through a high-pressure rubber pipe, and the control system (6) is connected to each hydraulic execution component through the high-pressure rubber pipe.
5. A track, rail-wheel type roadway repair machine as claimed in claim 1, wherein: the functional attachment (1005) is, and is not limited to, a bucket or a demolition hammer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011557902.7A CN112647550A (en) | 2020-12-25 | 2020-12-25 | Track and rail wheel type tunnel repairing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011557902.7A CN112647550A (en) | 2020-12-25 | 2020-12-25 | Track and rail wheel type tunnel repairing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112647550A true CN112647550A (en) | 2021-04-13 |
Family
ID=75362833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011557902.7A Pending CN112647550A (en) | 2020-12-25 | 2020-12-25 | Track and rail wheel type tunnel repairing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112647550A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115648866A (en) * | 2022-12-09 | 2023-01-31 | 中煤科工西安研究院(集团)有限公司 | Track-rail dual-purpose tunnel core drilling machine and using method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2703871Y (en) * | 2004-06-10 | 2005-06-08 | 煤炭科学研究总院太原分院 | Crawler-type anchoring bolt drill carriage |
| CN210622799U (en) * | 2019-09-10 | 2020-05-26 | 湖北兴发化工集团股份有限公司 | Crawler belt tyre type crow trolley |
| CN210852692U (en) * | 2019-06-24 | 2020-06-26 | 北海职业学院 | Wheel-track composite self-loading and unloading transport vehicle |
| CN111520155A (en) * | 2020-04-28 | 2020-08-11 | 陕西煤业化工技术研究院有限责任公司 | Multifunctional roadway repairing machine and construction method thereof |
-
2020
- 2020-12-25 CN CN202011557902.7A patent/CN112647550A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2703871Y (en) * | 2004-06-10 | 2005-06-08 | 煤炭科学研究总院太原分院 | Crawler-type anchoring bolt drill carriage |
| CN210852692U (en) * | 2019-06-24 | 2020-06-26 | 北海职业学院 | Wheel-track composite self-loading and unloading transport vehicle |
| CN210622799U (en) * | 2019-09-10 | 2020-05-26 | 湖北兴发化工集团股份有限公司 | Crawler belt tyre type crow trolley |
| CN111520155A (en) * | 2020-04-28 | 2020-08-11 | 陕西煤业化工技术研究院有限责任公司 | Multifunctional roadway repairing machine and construction method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115648866A (en) * | 2022-12-09 | 2023-01-31 | 中煤科工西安研究院(集团)有限公司 | Track-rail dual-purpose tunnel core drilling machine and using method thereof |
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Application publication date: 20210413 |