CN214464273U - A extend support for colliery rock burst equipment - Google Patents
A extend support for colliery rock burst equipment Download PDFInfo
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- CN214464273U CN214464273U CN202120107981.5U CN202120107981U CN214464273U CN 214464273 U CN214464273 U CN 214464273U CN 202120107981 U CN202120107981 U CN 202120107981U CN 214464273 U CN214464273 U CN 214464273U
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- 239000011435 rock Substances 0.000 title claims abstract description 145
- 230000007246 mechanism Effects 0.000 claims abstract description 129
- 239000003245 coal Substances 0.000 claims abstract description 60
- 238000009434 installation Methods 0.000 claims abstract description 53
- 238000009527 percussion Methods 0.000 claims abstract description 8
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 abstract description 4
- 238000011161 development Methods 0.000 abstract description 2
- 230000008859 change Effects 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 238000005065 mining Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
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Abstract
The utility model belongs to the technical field of rock burst equipment, concretely discloses a extend support for coal mine rock burst equipment, including extend support main part, installation mechanism, coal mine rock burst mechanism and supporting mechanism, the bottom embedding of extending support main part is connected with installation mechanism, the middle part embedding of installation mechanism is connected with coal mine rock burst mechanism, the top embedding of extend support main part is connected with supporting mechanism, the bottom embedding of installation mechanism is connected with unable adjustment base, installation mechanism helps on the one hand to install the coal mine rock burst mechanism fixedly, on the other hand helps to support the top of the mine cave, the stability of device is improved, coal mine rock burst mechanism is composed of first rock burst equipment, second rock burst equipment, regulating plate, power box, fixed block and percussion bit, coal mine rock burst mechanism helps to monitor the mine cave rock burst, the practicability of the device is improved, and the device can have wide development prospect in the future.
Description
Technical Field
The utility model relates to a rock burst equipment technical field specifically is a extend support that is used for colliery rock burst equipment.
Background
The coal industry is the basic industry of China, the health, stability and continuous development of the coal industry are important problems related to national energy safety, and with the increase of mining depth, the expansion of mining range and the increase of mining intensity, in recent years, although a plurality of measures are taken, the number of rock burst mines and the total rock burst frequency are not reduced. Particularly, the number of mines reaching the kilometer deep well is not small at present, and the mines are more and more, so that the number of rock burst mines is gradually increased and the rock burst disaster is more serious in the aspect of coal mining practice.
At present, the support structure of the existing rock burst equipment is simple, the stability is poor, most of the existing rock burst equipment is fixed, the moving effect of the adjusting equipment is poor, rock burst disasters are easily induced, serious underground damage and casualty accidents are caused, the possibility of rock burst is higher, particularly, the danger of rock burst on a working face is higher, the support effect is poor, and the existing device is single in function and low in intelligence.
Therefore, how to design an extension bracket for a coal mine rock burst device becomes a problem to be solved currently.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an extend support for colliery rock burst equipment to solve the problem that the support effect that proposes among the above-mentioned background is poor, function singleness and stability are low.
In order to achieve the above object, the utility model provides a following technical scheme: a stretching support for coal mine rock burst equipment comprises a stretching support main body, a mounting mechanism, a coal mine rock burst mechanism and a supporting mechanism, wherein the bottom of the stretching support main body is embedded and connected with the mounting mechanism, the middle part of the mounting mechanism is embedded and connected with the coal mine rock burst mechanism, the top end of the stretching support main body is embedded and connected with the supporting mechanism, the bottom of the mounting mechanism is embedded and connected with a fixed base, one side of the fixed base is connected with a fixed needle in a penetrating way, one side of the top end of the fixed base is embedded and connected with a first mounting column, the other side of the top end of the fixed base is embedded and connected with a second mounting column, the other end of the second mounting column is embedded and connected with a fixed rod, the bottom end of the second mounting column is embedded and connected with a supporting column, the top end of the supporting column is embedded and connected with a connecting block, the top end of the connecting block is embedded and connected with a hydraulic telescopic column, the top embedding of hydraulic telescoping post is connected with the rotary disk, one side embedding of colliery rock burst mechanism is connected with first rock burst equipment, the opposite side embedding of colliery rock burst mechanism is connected with second rock burst equipment, the bottom embedding of colliery rock burst mechanism is connected with the regulating plate, the bottom embedding of regulating plate is connected with the control box, one side embedding of second rock burst equipment is connected with the headstock, the other end embedding of headstock is connected with the fixed block, the top embedding of fixed block is connected with the fixer, the opposite side swing joint of fixed block has percussion bit, the middle part embedding of supporting mechanism is connected with the roof, the one end embedding of supporting mechanism is connected with the expansion plate.
Preferably, one end of the top plate is connected with a rotator in an embedded mode.
Preferably, one end of the second mounting column is embedded and connected with an adjusting groove.
Preferably, the bottom end of the control box is connected with a signal transceiver in an embedded manner.
Preferably, the installation mechanism is formed by jointly combining a fixed base at the bottom of the installation mechanism, a fixed needle at one side of the fixed base, a first installation column at one side of the top end of the fixed base, a second installation column at the other side of the top end of the fixed base, a fixed rod at the other end of the second installation column, a support column at the bottom end of the second installation column, a connecting block at the top end of the support column, a hydraulic telescopic column at the top end of the connecting block and a rotary disk at the top end of the hydraulic telescopic column.
Preferably, the coal mine rock burst mechanism is formed by combining a first rock burst device on one side of the coal mine rock burst mechanism, a second rock burst device on the other side of the coal mine rock burst mechanism, an adjusting plate at the bottom of the coal mine rock burst mechanism, a control box at the bottom end of the adjusting plate, a power box on one side of the second rock burst device, a fixed block at the other end of the power box, a fixing device at the top end of the fixed block and a rock bit on the other side of the fixed block.
Compared with the prior art, the beneficial effects of the utility model are that:
1. this kind of a extend support for colliery rock burst equipment, installation mechanism comprises unable adjustment base, fixed needle, first erection column, second erection column, dead lever, support column, connecting block, hydraulic telescoping post and rotary disk to reach and install fixed effect to colliery rock burst mechanism, installation mechanism helps installing fixedly to colliery rock burst mechanism on the one hand, and on the other hand helps supporting the mine cave top, thereby has improved the stability of device.
2. This kind of extend support for colliery rock burst equipment, colliery rock burst mechanism comprises first rock burst equipment, second rock burst equipment, regulating plate, control box, headstock, fixed block, fixer and percussion bit to reach the effect of monitoring the ore hole rock burst, colliery rock burst mechanism helps monitoring the ore hole rock burst, thereby has improved the practicality of device.
Drawings
Fig. 1 is a schematic view of the overall cross-sectional structure of the present invention;
FIG. 2 is a schematic sectional view of the mounting mechanism of the present invention;
FIG. 3 is a schematic view of the cross-sectional structure of the rock burst mechanism of the coal mine of the present invention;
fig. 4 is a schematic view of the cross-sectional structure of the supporting mechanism of the present invention.
The labels in the figure are: 1. the device comprises an extending support main body, 2, a mounting mechanism, 201, a fixing base, 202, a fixing needle, 203, a first mounting column, 204, a second mounting column, 205, a fixing rod, 206, a supporting column, 207, a connecting block, 208, a hydraulic telescopic column, 209, a rotating disc, 2010, an adjusting groove, 3, a coal mine rock burst mechanism, 301, a first rock burst device, 302, a second rock burst device, 303, an adjusting plate, 304, a control box, 305, a signal transceiver, 306, a power box, 307, a fixing block, 308, a fixer, 309, a percussion drill bit, 4, a supporting mechanism, 401, a top plate, 402, a rotator, 403 and a telescopic plate.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: a stretching support for coal mine rock burst equipment comprises a stretching support main body 1, an installation mechanism 2, a coal mine rock burst mechanism 3 and a supporting mechanism 4, wherein the bottom of the stretching support main body 1 is connected with the installation mechanism 2 in an embedded mode, the middle part of the installation mechanism 2 is connected with the coal mine rock burst mechanism 3 in an embedded mode, the top end of the stretching support main body 1 is connected with the supporting mechanism 4 in an embedded mode, the bottom of the installation mechanism 2 is connected with a fixed base 201 in an embedded mode, one side of the fixed base 201 is connected with a fixed needle 202 in a penetrating mode, one side of the top end of the fixed base 201 is connected with a first installation column 203 in an embedded mode, the other side of the top end of the fixed base 201 is connected with a second installation column 204 in an embedded mode, the other end of the second installation column 204 is connected with a fixed rod 205 in an embedded mode, the bottom end of the second installation column 204 is connected with a supporting column 206 in an embedded mode, the top end of the supporting column 206 is connected with a connecting block 207 in an embedded mode, and the top end of the connecting block 207 is connected with a hydraulic telescopic column 208 in an embedded mode, the top end of the hydraulic telescopic column 208 is connected with a rotating disc 209 in an embedded mode, one side of the coal mine rock burst mechanism 3 is connected with a first rock burst device 301 in an embedded mode, the other side of the coal mine rock burst mechanism 3 is connected with a second rock burst device 302 in an embedded mode, the bottom of the coal mine rock burst mechanism 3 is connected with an adjusting plate 303 in an embedded mode, the bottom end of the adjusting plate 303 is connected with a control box 304 in an embedded mode, one side of the second rock burst device 302 is connected with a power box 306 in an embedded mode, the other end of the power box 306 is connected with a fixing block 307 in an embedded mode, the top end of the fixing block 307 is connected with a fixer 308 in an embedded mode, the other side of the fixing block 307 is movably connected with a percussion drill bit 309, the middle of the supporting mechanism 4 is connected with a top plate 401 in an embedded mode, and one end of the supporting mechanism 4 is connected with a telescopic plate 403 in an embedded mode.
Preferably, the one end embedding of roof 401 is connected with circulator 402, and when the device was when using, operating personnel supported the mine cave top through supporting mechanism 4 to prevent the emergence of rock burst disaster, and then operating personnel is through the circulator 402 of rotatory roof 401 one end, thereby changes the angle of expansion plate 403, and then supports the mine cave top of different planes, and circulator 402 helps changing the support angle of expansion plate 403, and then makes things convenient for operating personnel to use.
Preferably, the one end embedding of second erection column 204 is connected with adjustment tank 2010, when operating personnel is using the device, operating personnel is through the fixed screw on the adjustment tank 2010 of rotatory second erection column 204 one end, thereby make the fixed screw not hard up, and then make things convenient for operating personnel to remove adjustment plate 303 in adjustment tank 2010 inboard, thereby change the height of adjustment plate 303, and then change colliery rock burst mechanism 3's height, remove behind the assigned position, thereby operating personnel carries out spacing fixed to adjustment plate 303 through the fixed screw, adjustment tank 2010 helps changing colliery rock burst mechanism 3's height, thereby the multifunctionality of device has been improved.
Preferably, the bottom end embedding of control box 304 is connected with signal transceiver 305, when the device is in the operation, the operator sends information to the signal transceiver 305 of control box 304 bottom through remote control panel in, signal transceiver 305 receives the information, and give the microprocessor in the control box 304 for the transmission, thereby microprocessor is handled the information, signal transceiver 305 transmits feedback information for remote control panel, and then the accurate operation of microprocessor controlling means, signal transceiver 305 helps receiving or sending the information, thereby controlling means accurate operation, and then the intelligence of device has been improved.
Preferably, the installation mechanism 2 is formed by combining a fixed base 201 at the bottom of the installation mechanism 2, a fixed pin 202 at one side of the fixed base 201, a first installation column 203 at one side of the top end of the fixed base 201, a second installation column 204 at the other side of the top end of the fixed base 201, a fixed rod 205 at the other end of the second installation column 204, a support column 206 at the bottom end of the second installation column 204, a connecting block 207 at the top end of the support column 206, a hydraulic telescopic column 208 at the top end of the connecting block 207 and a rotating disc 209 at the top end of the hydraulic telescopic column 208 together, when an operator needs to use the device, the operator places the support mechanism 4 at the top end of the installation mechanism 2, so as to connect and fix the support mechanism 4 through the rotating disc 209 at the top end of the hydraulic telescopic column 208, and then the operator installs the coal mine rock burst mechanism 3 in the middle part of the installation mechanism 2, thereby facilitating the coal mine rock burst mechanism 3 to monitor a mine hole, and then after operating personnel removed the assigned position to the device, thereby operating personnel fixes unable adjustment base 201 on ground through the fixed needle 202 of unable adjustment base 201 one side, operating personnel is flexible through the flexible post 208 mechanism of hydraulic pressure on remote control panel control connecting block 207 top, thereby change the height of supporting mechanism 4, make things convenient for supporting mechanism 4 to support the mine hole top, the dead lever 205 of the second erection column 204 other end helps strengthening installation mechanism 2, thereby make installation mechanism 2 more stable, installation mechanism 2 helps on the one hand to install fixing colliery rock burst mechanism 3, on the other hand helps supporting the mine hole top, thereby the stability of device has been improved.
Preferably, the coal mine rock burst mechanism 3 is formed by combining a first rock burst device 301 on one side of the coal mine rock burst mechanism 3, a second rock burst device 302 on the other side of the coal mine rock burst mechanism 3, an adjusting plate 303 at the bottom of the coal mine rock burst mechanism 3, a control box 304 at the bottom end of the adjusting plate 303, a power box 306 on one side of the second rock burst device 302, a fixed block 307 at the other end of the power box 306, a fixer 308 at the top end of the fixed block 307 and a percussion bit 309 on the other side of the fixed block 307, when an operator fixes the coal mine rock burst mechanism 3 on the mounting mechanism 2, the operator controls the control box 304 at the bottom end of the adjusting plate 303 to start to operate through a remote control panel, so that the control box 304 controls the first rock burst device 301 on one side of the coal mine rock burst mechanism 3 and the second rock burst device 302 on the other side of the coal mine rock burst mechanism 3 to start to operate, and then the power box 306 of one side of the second rock burst device 302 starts to operate, so that the rock burst bit 309 of the other side of the fixed block 307 is drilled into the inner wall of the mine hole, and further the rock burst of the mine hole is monitored, when the rock burst conditions are monitored by the first rock burst device 301 and the second rock burst device 302, the signal transceiver 305 sends information to the remote control panel, so that an operator is reminded to process the rock burst, the fixed block 307 of the other end of the power box 306 and the fixing device 308 at the top end of the fixed block 307 are beneficial to mounting and fixing the rock burst bit 309, and the coal mine rock burst mechanism 3 is beneficial to monitoring the rock burst of the mine hole, so that the practicability of the device is improved.
The working principle is as follows: firstly, the installation mechanism 2 is formed by combining a fixed base 201 at the bottom of the installation mechanism 2, a fixed needle 202 at one side of the fixed base 201, a first installation column 203 at one side of the top end of the fixed base 201, a second installation column 204 at the other side of the top end of the fixed base 201, a fixed rod 205 at the other end of the second installation column 204, a support column 206 at the bottom end of the second installation column 204, a connecting block 207 at the top end of the support column 206, a hydraulic telescopic column 208 at the top end of the connecting block 207 and a rotating disc 209 at the top end of the hydraulic telescopic column 208 together, when an operator needs to use the device, the operator places the supporting mechanism 4 at the top end of the installation mechanism 2 so as to connect and fix the supporting mechanism 4 through the rotating disc 209 at the top end of the hydraulic telescopic column 208, and then the operator installs the coal mine rock burst mechanism 3 at the middle part of the installation mechanism 2, thereby facilitating the coal mine rock burst mechanism 3 to monitor a mine hole, and then after operating personnel removed the assigned position to the device, thereby operating personnel fixes unable adjustment base 201 on ground through the fixed needle 202 of unable adjustment base 201 one side, operating personnel is flexible through the flexible post 208 mechanism of hydraulic pressure on remote control panel control connecting block 207 top, thereby change the height of supporting mechanism 4, make things convenient for supporting mechanism 4 to support the mine hole top, the dead lever 205 of the second erection column 204 other end helps strengthening installation mechanism 2, thereby make installation mechanism 2 more stable, installation mechanism 2 helps on the one hand to install fixing colliery rock burst mechanism 3, on the other hand helps supporting the mine hole top, thereby the stability of device has been improved.
Then, the one end embedding of second erection column 204 is connected with adjustment tank 2010, when operating personnel is using the device, operating personnel is through the fixed screw on the adjustment tank 2010 of rotatory second erection column 204 one end, thereby make the fixed screw not hard up, and then make things convenient for operating personnel to move adjustment plate 303 in adjustment tank 2010 inboard, thereby change the height of adjustment plate 303, and then change colliery rock burst mechanism 3's height, remove behind the assigned position, thereby operating personnel carries out spacing fixed to adjustment plate 303 through the fixed screw, adjustment tank 2010 helps changing colliery rock burst mechanism 3's height, thereby the multifunctionality of device has been improved.
Next, the one end embedding of roof 401 is connected with circulator 402, and when the device was in the use, operating personnel supported the mine cave top through supporting mechanism 4 to prevent the emergence of rock burst disaster, and then operating personnel is through the circulator 402 of rotatory roof 401 one end, thereby changes the angle of expansion plate 403, and then supports the mine cave top of different planes, and circulator 402 helps changing the support angle of expansion plate 403, and then makes things convenient for operating personnel to use.
Next, the bottom embedding of control box 304 is connected with signal transceiver 305, when the device is when the operation process, the operator sends information to the signal transceiver 305 of control box 304 bottom through remote control panel in, signal transceiver 305 receives information, and transmit the microprocessor for in the control box 304, thereby microprocessor handles information, signal transceiver 305 transmits feedback information for remote control panel, and then the accurate operation of microprocessor controlling means, signal transceiver 305 helps receiving or sending information, thereby the accurate operation of controlling means, and then the intelligence of device has been improved.
Finally, the coal mine rock burst mechanism 3 is formed by combining a first rock burst device 301 on one side of the coal mine rock burst mechanism 3, a second rock burst device 302 on the other side of the coal mine rock burst mechanism 3, an adjusting plate 303 at the bottom of the coal mine rock burst mechanism 3, a control box 304 at the bottom end of the adjusting plate 303, a power box 306 on one side of the second rock burst device 302, a fixed block 307 at the other end of the power box 306, a fixer 308 at the top end of the fixed block 307 and a percussion bit 309 on the other side of the fixed block 307, when an operator fixes the coal mine rock burst mechanism 3 on the mounting mechanism 2, the operator controls the control box 304 at the bottom end of the adjusting plate 303 to start to operate through a remote control panel, so that the control box 304 controls the first rock burst device 301 on one side of the coal mine rock burst mechanism 3 and the second rock burst device 302 on the other side of the coal mine rock burst mechanism 3 to start to operate, and then the power box 306 on one side of the second rock burst device 302 starts to operate, so that the rock burst bit 309 on the other side of the fixed block 307 is drilled into the inner wall of the mine hole, and further the rock burst of the mine hole is monitored, when the rock burst conditions are monitored by the first rock burst device 301 and the second rock burst device 302, the signal transceiver 305 sends information to the remote control panel, so that an operator is reminded to process the rock burst, the fixed block 307 on the other end of the power box 306 and the fixing device 308 on the top end of the fixed block 307 are beneficial to mounting and fixing the rock burst bit 309, and the coal mine rock burst mechanism 3 is beneficial to monitoring the rock burst of the mine hole, so that the practicability of the device is improved, and the working principle of the extension bracket for the coal mine rock burst device is realized.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a extend support for colliery rock burst equipment, is including extending support main part (1), installation mechanism (2), colliery rock burst mechanism (3) and supporting mechanism (4), its characterized in that: the bottom of the stretching support main body (1) is embedded and connected with an installation mechanism (2), the middle part of the installation mechanism (2) is embedded and connected with a coal mine rock burst mechanism (3), the top of the stretching support main body (1) is embedded and connected with a supporting mechanism (4), the bottom of the installation mechanism (2) is embedded and connected with a fixed base (201), one side of the fixed base (201) is connected with a fixed needle (202) in a penetrating way, one side of the top of the fixed base (201) is embedded and connected with a first installation column (203), the other side of the top of the fixed base (201) is embedded and connected with a second installation column (204), the other end of the second installation column (204) is embedded and connected with a fixed rod (205), the bottom of the second installation column (204) is embedded and connected with a support column (206), and the top of the support column (206) is embedded and connected with a connecting block (207), the top end of the connecting block (207) is embedded and connected with a hydraulic telescopic column (208), the top end of the hydraulic telescopic column (208) is embedded and connected with a rotating disc (209), one side of the coal mine rock burst mechanism (3) is embedded and connected with a first rock burst device (301), the other side of the coal mine rock burst mechanism (3) is embedded and connected with a second rock burst device (302), an adjusting plate (303) is embedded and connected at the bottom of the coal mine rock burst mechanism (3), the bottom end of the adjusting plate (303) is connected with a control box (304) in an embedded manner, one side of the second rock burst equipment (302) is connected with a power box (306) in an embedded manner, the other end of the power box (306) is embedded and connected with a fixed block (307), the top end of the fixed block (307) is embedded and connected with a fixer (308), and the other side of the fixed block (307) is movably connected with a percussion bit (309).
2. An extension bracket for a coal mine rock burst apparatus as claimed in claim 1, wherein: the middle part of the supporting mechanism (4) is connected with a top plate (401) in an embedded mode, and one end of the supporting mechanism (4) is connected with a telescopic plate (403) in an embedded mode.
3. An extension bracket for a coal mine rock burst apparatus as claimed in claim 2, wherein: one end of the top plate (401) is embedded and connected with a rotator (402).
4. An extension bracket for a coal mine rock burst apparatus as claimed in claim 1, wherein: one end of the second mounting column (204) is embedded and connected with an adjusting groove (2010).
5. An extension bracket for a coal mine rock burst apparatus as claimed in claim 1, wherein: the bottom end of the control box (304) is embedded and connected with a signal transceiver (305).
6. An extension bracket for a coal mine rock burst apparatus as claimed in claim 1, wherein: installation mechanism (2) are by unable adjustment base (201) of installation mechanism (2) bottom, fixed needle (202) of unable adjustment base (201) one side, first erection column (203) of unable adjustment base (201) top one side, second erection column (204) of unable adjustment base (201) top opposite side, dead lever (205) of second erection column (204) other end, support column (206) of second erection column (204) bottom, connecting block (207) on support column (206) top, hydraulic telescoping column (208) and rotary disk (209) on hydraulic telescoping column (208) top on connecting block (207) top combine together and form.
7. An extension bracket for a coal mine rock burst apparatus as claimed in claim 1, wherein: the coal mine rock burst mechanism (3) is formed by combining a first rock burst device (301) on one side of the coal mine rock burst mechanism (3), a second rock burst device (302) on the other side of the coal mine rock burst mechanism (3), an adjusting plate (303) at the bottom of the coal mine rock burst mechanism (3), a control box (304) at the bottom end of the adjusting plate (303), a power box (306) on one side of the second rock burst device (302), a fixing block (307) at the other end of the power box (306), a fixing device (308) at the top end of the fixing block (307) and a rock bit (309) on the other side of the fixing block (307).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120107981.5U CN214464273U (en) | 2021-01-15 | 2021-01-15 | A extend support for colliery rock burst equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120107981.5U CN214464273U (en) | 2021-01-15 | 2021-01-15 | A extend support for colliery rock burst equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214464273U true CN214464273U (en) | 2021-10-22 |
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ID=78139610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120107981.5U Expired - Fee Related CN214464273U (en) | 2021-01-15 | 2021-01-15 | A extend support for colliery rock burst equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214464273U (en) |
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2021
- 2021-01-15 CN CN202120107981.5U patent/CN214464273U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |
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| CF01 | Termination of patent right due to non-payment of annual fee |