CN204402351U - A kind of drilling hole position and degree of depth self-interacting type Tunnel Blasting drilling equipment - Google Patents
A kind of drilling hole position and degree of depth self-interacting type Tunnel Blasting drilling equipment Download PDFInfo
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- CN204402351U CN204402351U CN201420742752.0U CN201420742752U CN204402351U CN 204402351 U CN204402351 U CN 204402351U CN 201420742752 U CN201420742752 U CN 201420742752U CN 204402351 U CN204402351 U CN 204402351U
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Abstract
The utility model discloses a kind of drilling hole position and degree of depth self-interacting type Tunnel Blasting drilling equipment, comprise horizontal chassis, horizonal base plate, to be laid in above horizonal base plate and the drilling equipment that moves forward and backward can be carried out in the horizontal plane and promote drilling equipment and carry out the top-pushing mechanism that the movable and drilling depth tackling drilling equipment mutually carries out adjusting; The vertical mount pad that drilling equipment comprises round circular orbit, drill rack, two rail supported seats and is positioned on rear side of round circular orbit; Drill rack installed in front has a horizontal sliding track, and horizontal sliding track installation has the drilling tool mount pad of multiple energy horizontal sliding; Top-pushing mechanism comprises push plate and multiple pushing tow hydraulic cylinder; Horizontal sliding seat is installed bottom vertical mount pad.The utility model structure is simple, reasonable in design, install lay convenient and use easy and simple to handle, result of use good, can easy, the boring procedure that completes multiple big gun hole on explosion face fast, and drilling hole position and drilling depth all can easy adjustment.
Description
Technical field
The utility model relates to a kind of drilling equipment, especially relates to a kind of drilling hole position and degree of depth self-interacting type Tunnel Blasting drilling equipment.
Background technology
In set of tunneling construction process, when carrying out Excavation Blasting, need on explosion face, first drill through multiple big gun holes of laying in hoop, then put into each big gun hole after configuring the blasting charge according to the blasting parameter designed in advance, and then ignite, thus complete blast working.Nowadays, when carrying out explosion treatment in tunnel excavation work progress, usually the position, hole of survey tool to each big gun hole is all first adopted to determine, afterwards again by manually adopting rig or equipment of punchinging offers big gun hole one by one on country rock, due on explosion face open fire with artillery the One's name is legion in hole, thus need the manpower and materials of input comparatively large, and spended time is longer, affects the constructing tunnel cycle largely.Thus, need design a kind of structure simple, reasonable in design, install and lay convenient and use easy and simple to handle, that result of use is good Tunnel Blasting construction blasting boreholes device, its light structure, conveniently moving, can easy, the boring procedure that completes multiple big gun hole on explosion face fast, and boring procedure controls simple and easy, drilling hole position and drilling depth all can easy adjustment.
Utility model content
Technical problem to be solved in the utility model is for above-mentioned deficiency of the prior art, a kind of drilling hole position and degree of depth self-interacting type Tunnel Blasting drilling equipment are provided, its structure is simple, reasonable in design, installation is laid conveniently and it is easy and simple to handle to use, result of use good, can easy, the boring procedure that completes multiple big gun hole on explosion face fast, and boring procedure controls simple and easy, drilling hole position and drilling depth all can easy adjustment.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of drilling hole position and degree of depth self-interacting type Tunnel Blasting drilling equipment, is characterized in that: comprise horizontal chassis, the horizonal base plate be arranged on horizontal chassis, to be laid in above horizonal base plate and can to carry out the drilling equipment that moves forward and backward in the horizontal plane and promote described drilling equipment and carry out the top-pushing mechanism that the movable and drilling depth tackling described drilling equipment mutually carries out adjusting;
Described drilling equipment comprise be positioned at horizonal base plate front side top round circular orbit, be arranged on round circular orbit and can on vertical plane along round circular orbit carry out 360 ° rotate drill rack, two vertical mount pads being supported on the rail supported seat below the round circular orbit left and right sides respectively and being positioned on rear side of round circular orbit, the symmetrical laying of two described rail supported seats; Described round circular orbit is in vertically to laying, and described drill rack is strip frame and itself and round circular orbit are laid on same vertical plane, and the length of described drill rack and its two ends identical with the diameter of round circular orbit are all installed on round circular orbit; Described vertical mount pad is positioned at the dead astern of round circular orbit, described vertical mount pad top installed in front has the feathering axis driving drill rack to carry out 360 ° of rotations on vertical plane, described feathering axis is arranged in the middle part of drill rack, and described feathering axis is undertaken driving and being in transmission connection by transmission mechanism between itself and rotary drive motor by rotary drive motor; The installed in front of described drill rack has a horizontal sliding track, described horizontal sliding track installation has the drilling tool mount pad of multiple energy horizontal sliding, each described drilling tool mount pad is all provided with one for drilling through the electrodrill in big gun hole, multiple described electrodrill is all laid on same straight line and its central axis along drill rack is laid from front to back, and multiple described electrodrill is all positioned on front side of drill rack;
Described top-pushing mechanism comprises and being fixedly mounted on horizonal base plate and the push plate be positioned on rear side of vertical mount pad and to be multiplely all laid on front side of push plate and round circular orbit to be carried out to the pushing tow hydraulic cylinder of front and back pushing tow, and multiple described pushing tow hydraulic cylinder along the circumferential direction evenly lays and it is all supported between push plate and round circular orbit; Multiple described pushing tow hydraulic cylinder is all laid in level;
Bottom described vertical mount pad, horizontal sliding seat is installed, described horizonal base plate is provided with the straight skidding track for slippage before and after horizontal sliding seat; Be provided with above the left and right sides of described horizontal chassis and spacing vertical spacing plate is carried out to two described rail supported seats;
Multiple described pushing tow hydraulic cylinder all lays in level and it is all laid on same vertical plane, and on the front side wall that the cylinder body of multiple described pushing tow hydraulic cylinder is all fixed on push plate and its piston rod top is all propped up and withstood on round circular orbit;
Described horizontal chassis is provided with electronic circuit board, the wireless communication module described electronic circuit board being equipped with controller and connecting with controller; Multiple described pushing tow hydraulic cylinder is Numeric hydraulic cylinder, and described rotary drive motor and multiple described pushing tow hydraulic cylinder are undertaken controlling by controller and it all connects with controller.
Above-mentioned a kind of drilling hole position and degree of depth self-interacting type Tunnel Blasting drilling equipment, it is characterized in that: described round circular orbit is equipped with the displacement detecting unit its movable displacement being carried out to detection in real time, described drill rack is equipped with the rotation angle detecting unit its anglec of rotation being carried out to detection in real time, described displacement detecting unit and rotation angle detecting unit all connect with controller.
Above-mentioned a kind of drilling hole position and degree of depth self-interacting type Tunnel Blasting drilling equipment, is characterized in that: described drill rack and horizontal sliding track are parallel laying.
Above-mentioned a kind of drilling hole position and degree of depth self-interacting type Tunnel Blasting drilling equipment, is characterized in that: described push plate is in the vertical rectangular slab to laying.
Above-mentioned a kind of drilling hole position and degree of depth self-interacting type Tunnel Blasting drilling equipment, is characterized in that: described controller is communicated with wireless communication terminal by wireless communication module.
Above-mentioned a kind of drilling hole position and degree of depth self-interacting type Tunnel Blasting drilling equipment, it is characterized in that: the quantity of described pushing tow hydraulic cylinder is four, four described pushing tow hydraulic cylinders are respectively a left hydraulic cylinder withstanding on the round circular orbit left and right sides and right hydraulic cylinder and prop up and withstand on the upper hydraulic cylinder of both sides on round circular orbit and lower hydraulic cylinder.
Above-mentioned a kind of drilling hole position and degree of depth self-interacting type Tunnel Blasting drilling equipment, is characterized in that: the quantity of described electrodrill is 6 ~ 12.
Above-mentioned a kind of drilling hole position and degree of depth self-interacting type Tunnel Blasting drilling equipment, it is characterized in that: described drill rack is that boundary is divided into two drill rack sections with feathering axis, two described drill rack sections are all provided with multiple electrodrill, and the multiple described electrodrill that two described drill rack sections are installed symmetrically is laid, on each described drill rack sections multiple described electrodrill is installed spacing all reduce gradually from outside to inside.
Above-mentioned a kind of drilling hole position and degree of depth self-interacting type Tunnel Blasting drilling equipment, is characterized in that: the shape of cross section of described round circular orbit is concave shape, and the twice of described drill rack are installed in round circular orbit respectively.
Above-mentioned a kind of drilling hole position and degree of depth self-interacting type Tunnel Blasting drilling equipment, is characterized in that: described round circular orbit forms by channel-section steel is bending, and described drill rack is the shape steel bracket be welded by many root type steel.
The utility model compared with prior art has the following advantages:
1, simple, the reasonable in design and processing and fabricating of structure and installing is laid convenient, and input cost is low.
2, the simple and easy-to-connect of circuit.
3, lightweight, overall structure light and handy and actual installation and conveniently moving, can easyly be installed in ground or moving carriage.
3, use simple to operate, result of use good and practical value is high, the object of holing on whole Tunnel Blasting face is realized by rotary drilling frame, and drilling efficiency is high, significantly save the drilling construction time, thus can complete the boring procedure in multiple big gun hole on explosion face easy, fast.Meanwhile, boring procedure controls simple and easy, and drilling hole position and drilling depth all can easy adjustment.
In sum, the utility model structure is simple, reasonable in design, install lay convenient and use easy and simple to handle, result of use good, can easy, the boring procedure that completes multiple big gun hole on explosion face fast, and drilling hole position and drilling depth all can easy adjustment.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is schematic block circuit diagram of the present utility model.
Description of reference numerals:
1-horizontal pedestal; 2-round circular orbit; 3-drill rack;
4-vertical mount pad; 5-rail supported seat; 6-push plate;
7-propulsion arm; 8-feathering axis; 9-electrodrill.
10-horizontal chassis; 11-rotary drive motor; 12-horizontal sliding track;
13-drilling tool mount pad; 14-horizontal sliding seat; 15-straight skidding track;
16-vertical spacing plate; 17-controller; 18-wireless communication module;
19-displacement detecting unit; 20-rotation angle detecting unit; 21-wireless communication terminal;
Detailed description of the invention
As shown in Figure 1 and Figure 2, the utility model comprises horizontal chassis 10, the horizonal base plate 1 be arranged on horizontal chassis 10, to be laid in above horizonal base plate 1 and can to carry out the drilling equipment that moves forward and backward in the horizontal plane and promote described drilling equipment and carry out the top-pushing mechanism that the movable and drilling depth tackling described drilling equipment mutually carries out adjusting.
Described drilling equipment comprise be positioned at horizonal base plate 1 front side top round circular orbit 2, be arranged on round circular orbit 2 and can on vertical plane along round circular orbit 2 carry out 360 ° rotate drill racks 3, two be supported on the rail supported seat 5 below round circular orbit 2 left and right sides respectively and be positioned at the symmetrical laying of vertical mount pad 4, two described rail supported seats 5 on rear side of round circular orbit 2; Described round circular orbit 2 is vertically to laying, described drill rack 3 is for strip frame and itself and round circular orbit 2 are laid on same vertical plane, and the length of described drill rack 3 and its two ends identical with the diameter of round circular orbit 2 are all installed on round circular orbit 2.Described vertical mount pad 4 is positioned at the dead astern of round circular orbit 2, described vertical mount pad 4 top installed in front has the feathering axis 8 driving drill rack 3 to carry out 360 ° of rotations on vertical plane, described feathering axis 8 is arranged in the middle part of drill rack 3, and described feathering axis 8 is undertaken driving by rotary drive motor 11 and is in transmission connection by transmission mechanism between itself and rotary drive motor 11.The installed in front of described drill rack 3 has a horizontal sliding track 12, described horizontal sliding track 12 is provided with the drilling tool mount pad 13 of multiple energy horizontal sliding, each described drilling tool mount pad 13 is all provided with one for drilling through the electrodrill 9 in big gun hole, multiple described electrodrill 9 is all laid on same straight line and its central axis along drill rack 3 is laid from front to back, and multiple described electrodrill 9 is all positioned on front side of drill rack 3.
Described top-pushing mechanism comprises and being fixedly mounted on horizonal base plate 1 and the push plate 6 be positioned on rear side of vertical mount pad 4 and to be multiplely all laid on front side of push plate 6 and round circular orbit 2 to be carried out to the pushing tow hydraulic cylinder 7 of front and back pushing tow, and multiple described pushing tow hydraulic cylinder 7 along the circumferential direction evenly lays and it is all supported between push plate 6 and round circular orbit 2.Multiple described pushing tow hydraulic cylinder 7 is all laid in level.
Bottom described vertical mount pad 4, horizontal sliding seat 14 is installed, described horizonal base plate 1 is provided with the straight skidding track 15 for slippage before and after horizontal sliding seat 14; Be provided with above the left and right sides of described horizontal chassis 10 and spacing vertical spacing plate 16 is carried out to two described rail supported seats 5.
Multiple described pushing tow hydraulic cylinder 7 all lays in level and it is all laid on same vertical plane, and on the front side wall that the cylinder body of multiple described pushing tow hydraulic cylinder 7 is all fixed on push plate 6 and its piston rod top is all propped up and withstood on round circular orbit 2.
Described horizontal chassis 10 is provided with electronic circuit board, the wireless communication module 18 described electronic circuit board being equipped with controller 17 and connecting with controller 17; Multiple described pushing tow hydraulic cylinder 7 is Numeric hydraulic cylinder, and described rotary drive motor 11 and multiple described pushing tow hydraulic cylinder 7 are undertaken controlling by controller 17 and it all connects with controller 17.
In the present embodiment, the displacement detecting unit 19 its movable displacement being carried out to detection in real time described round circular orbit 2 is equipped with, described drill rack 3 is equipped with the rotation angle detecting unit 20 its anglec of rotation being carried out to detection in real time, described displacement detecting unit 19 and rotation angle detecting unit 20 all connect with controller 17.
When actual laying is installed, described drill rack 3 and horizontal sliding track 12 are in parallel laying.
In the present embodiment, described push plate 6 is in the vertical rectangular slab to laying.
During actual use, described controller 17 is communicated with wireless communication terminal 21 by wireless communication module 18.
In the present embodiment, the quantity of described pushing tow hydraulic cylinder 7 is four, and four described pushing tow hydraulic cylinders 7 are respectively a left hydraulic cylinder withstanding on round circular orbit 2 left and right sides and right hydraulic cylinder and prop up and withstand on the upper hydraulic cylinder of both sides on round circular orbit 2 and lower hydraulic cylinder.
During actual use, the quantity of described electrodrill 9 is 6 ~ 12.
In the present embodiment, the quantity of described electrodrill 9 is 10.During practice of construction, can according to specific needs, the quantity of described electrodrill 9 be adjusted accordingly.
In the present embodiment, described drill rack 3 with feathering axis 8 for boundary is divided into two drill rack sections, two described drill rack sections are all provided with multiple electrodrill 9, and the multiple described electrodrill 9 that two described drill rack sections are installed symmetrically is laid, on each described drill rack sections multiple described electrodrill 9 is installed spacing all reduce gradually from outside to inside.
During actual installation, the shape of cross section of described round circular orbit 2 is concave shape, and the twice of described drill rack 3 are installed in round circular orbit 2 respectively.
In the present embodiment, described round circular orbit 2 forms by channel-section steel is bending, and described drill rack 3 is the shape steel bracket be welded by many root type steel.
The above; it is only preferred embodiment of the present utility model; not the utility model is imposed any restrictions; every above embodiment is done according to the utility model technical spirit any simple modification, change and equivalent structure change, all still belong in the protection domain of technical solutions of the utility model.
Claims (10)
1. drilling hole position and a degree of depth self-interacting type Tunnel Blasting drilling equipment, is characterized in that: comprise horizontal chassis (10), the horizonal base plate (1) be arranged on horizontal chassis (10), be laid in horizonal base plate (1) top and can carry out the drilling equipment that moves forward and backward in the horizontal plane and promote described drilling equipment carrying out the top-pushing mechanism that the movable drilling depth also tackling described drilling equipment mutually carries out adjusting;
Described drilling equipment comprise be positioned at horizonal base plate (1) front side top round circular orbit (2), be arranged on round circular orbit (2) upper and can on vertical plane along round circular orbit (2) carry out 360 ° of drill racks (3) rotated, two be supported on the rail supported seat (5) below round circular orbit (2) left and right sides respectively and be positioned at the vertical mount pads (4) on rear side of round circular orbit (2), the symmetrical laying of two described rail supported seats (5); Described round circular orbit (2) is vertically to laying, described drill rack (3) is for strip frame and itself and round circular orbit (2) are laid on same vertical plane, and the length of described drill rack (3) is identical with the diameter of round circular orbit (2) and its two ends are all installed on round circular orbit (2); Described vertical mount pad (4) is positioned at the dead astern of round circular orbit (2), described vertical mount pad (4) top installed in front has drive drill rack (3) on vertical plane, carry out 360 ° of feathering axis (8) rotated, described feathering axis (8) is arranged on drill rack (3) middle part, and described feathering axis (8) is undertaken driving by rotary drive motor (11) and is in transmission connection by transmission mechanism between itself and rotary drive motor (11); The installed in front of described drill rack (3) has a horizontal sliding track (12), described horizontal sliding track (12) is provided with the drilling tool mount pad (13) of multiple energy horizontal sliding, each described drilling tool mount pad (13) is all provided with one for drilling through the electrodrill (9) in big gun hole, multiple described electrodrill (9) is all laid on same straight line and its central axis along drill rack (3) is laid from front to back, and multiple described electrodrill (9) is all positioned at drill rack (3) front side;
Described top-pushing mechanism comprises that to be fixedly mounted on horizonal base plate (1) upper and be positioned at the push plate (6) of vertical mount pad (4) rear side and be multiplely all laid in push plate (6) front side and round circular orbit (2) carried out to the pushing tow hydraulic cylinder (7) of front and back pushing tow, multiple described pushing tow hydraulic cylinder (7) along the circumferential direction even laying and it is all supported between push plate (6) and round circular orbit (2); Multiple described pushing tow hydraulic cylinder (7) is all laid in level;
Described vertical mount pad (4) bottom is provided with horizontal sliding seat (14), described horizonal base plate (1) is provided with the straight skidding track (15) for slippage before and after horizontal sliding seat (14); Be provided with above the left and right sides of described horizontal chassis (10) and spacing vertical spacing plate (16) is carried out to two described rail supported seats (5);
Multiple described pushing tow hydraulic cylinder (7) is all laid in level and it is all laid on same vertical plane, and on the front side wall that the cylinder body of multiple described pushing tow hydraulic cylinder (7) is all fixed on push plate (6) and its piston rod top is all propped up and withstood on round circular orbit (2);
(10) are provided with electronic circuit board with described horizontal chassis, the wireless communication module (18) described electronic circuit board being equipped with controller (17) and connecting with controller (17); Multiple described pushing tow hydraulic cylinder (7) is Numeric hydraulic cylinder, described rotary drive motor (11) and multiple described pushing tow hydraulic cylinder (7) is undertaken controlling by controller (17) and it all connects with controller (17).
2. according to a kind of drilling hole position according to claim 1 and degree of depth self-interacting type Tunnel Blasting drilling equipment, it is characterized in that: described round circular orbit (2) is equipped with the displacement detecting unit (19) its movable displacement being carried out to detection in real time, described drill rack (3) is equipped with the rotation angle detecting unit (20) its anglec of rotation being carried out to detection in real time, described displacement detecting unit (19) and rotation angle detecting unit (20) all connect with controller (17).
3. according to a kind of drilling hole position described in claim 1 or 2 and degree of depth self-interacting type Tunnel Blasting drilling equipment, it is characterized in that: described drill rack (3) and horizontal sliding track (12) are in parallel laying.
4. according to a kind of drilling hole position described in claim 1 or 2 and degree of depth self-interacting type Tunnel Blasting drilling equipment, it is characterized in that: described push plate (6) is in the vertical rectangular slab to laying.
5., according to a kind of drilling hole position described in claim 1 or 2 and degree of depth self-interacting type Tunnel Blasting drilling equipment, it is characterized in that: described controller (17) is communicated with wireless communication terminal (21) by wireless communication module (18).
6. according to a kind of drilling hole position described in claim 1 or 2 and degree of depth self-interacting type Tunnel Blasting drilling equipment, it is characterized in that: the quantity of described pushing tow hydraulic cylinder (7) is four, four described pushing tow hydraulic cylinders (7) are respectively a left hydraulic cylinder withstanding on round circular orbit (2) left and right sides and right hydraulic cylinder and prop up the upper hydraulic cylinder and lower hydraulic cylinder that withstand on the upper both sides of round circular orbit (2).
7. according to a kind of drilling hole position described in claim 1 or 2 and degree of depth self-interacting type Tunnel Blasting drilling equipment, it is characterized in that: the quantity of described electrodrill (9) is 6 ~ 12.
8. according to a kind of drilling hole position described in claim 1 or 2 and degree of depth self-interacting type Tunnel Blasting drilling equipment, it is characterized in that: described drill rack (3) with feathering axis (8) for boundary is divided into two drill rack sections, two described drill rack sections are all provided with multiple electrodrill (9), and the multiple described electrodrill (9) that two described drill rack sections are installed symmetrically is laid, on each described drill rack sections multiple described electrodrill (9) is installed spacing all reduce gradually from outside to inside.
9. according to a kind of drilling hole position described in claim 1 or 2 and degree of depth self-interacting type Tunnel Blasting drilling equipment, it is characterized in that: the shape of cross section of described round circular orbit (2) is concave shape, the twice of described drill rack (3) are installed in round circular orbit (2) respectively.
10. according to a kind of drilling hole position according to claim 9 and degree of depth self-interacting type Tunnel Blasting drilling equipment, it is characterized in that: described round circular orbit (2) forms by channel-section steel is bending, and described drill rack (3) is the shape steel bracket be welded by many root type steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420742752.0U CN204402351U (en) | 2014-11-28 | 2014-11-28 | A kind of drilling hole position and degree of depth self-interacting type Tunnel Blasting drilling equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420742752.0U CN204402351U (en) | 2014-11-28 | 2014-11-28 | A kind of drilling hole position and degree of depth self-interacting type Tunnel Blasting drilling equipment |
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| Publication Number | Publication Date |
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| CN204402351U true CN204402351U (en) | 2015-06-17 |
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| CN201420742752.0U Expired - Fee Related CN204402351U (en) | 2014-11-28 | 2014-11-28 | A kind of drilling hole position and degree of depth self-interacting type Tunnel Blasting drilling equipment |
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| CN (1) | CN204402351U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106368606A (en) * | 2016-11-16 | 2017-02-01 | 中建三局第建设工程有限责任公司 | Method for tunnel smooth blasting drill construction |
| CN106545345A (en) * | 2016-12-07 | 2017-03-29 | 中铁工程装备集团有限公司 | Advanced rig fast embarkation device |
| CN108020650A (en) * | 2017-11-28 | 2018-05-11 | 山东大学 | A kind of miniature tunneling boring for model test drills arrangement apparatus and its application |
-
2014
- 2014-11-28 CN CN201420742752.0U patent/CN204402351U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106368606A (en) * | 2016-11-16 | 2017-02-01 | 中建三局第建设工程有限责任公司 | Method for tunnel smooth blasting drill construction |
| CN106545345A (en) * | 2016-12-07 | 2017-03-29 | 中铁工程装备集团有限公司 | Advanced rig fast embarkation device |
| CN108020650A (en) * | 2017-11-28 | 2018-05-11 | 山东大学 | A kind of miniature tunneling boring for model test drills arrangement apparatus and its application |
| WO2019104752A1 (en) * | 2017-11-28 | 2019-06-06 | 山东大学 | Miniature full-section drilling arrangement device for model experiment and application thereof |
| CN108020650B (en) * | 2017-11-28 | 2020-08-25 | 山东大学 | Miniature full-section drilling arrangement device for model test and application thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150617 Termination date: 20151128 |