CN105172654A - Carriage, belt type conveying system thereof and tensile force adjusting device - Google Patents
Carriage, belt type conveying system thereof and tensile force adjusting device Download PDFInfo
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- CN105172654A CN105172654A CN201510639675.5A CN201510639675A CN105172654A CN 105172654 A CN105172654 A CN 105172654A CN 201510639675 A CN201510639675 A CN 201510639675A CN 105172654 A CN105172654 A CN 105172654A
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- tensile force
- slide block
- belt conveyor
- adjusting device
- wheel shaft
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Abstract
A tensile force adjusting device is used for adjusting the tensile force of a conveying belt, and comprises a tensioning wheel and a thrust supply module for supplying thrust to the tensioning wheel. A conveying belt is wound around the tensioning wheel. The thrust supply module comprises a slide block, a support and a connecting rod. The connecting rod comprises a rod body and a connecting part arranged on the rod body. The slide block is movably arranged on the support and fixed to the rod body. The connecting part is movably arranged on the tensioning wheel. When the slide block slides along the support, the connecting rod pushes the tensioning wheel to move, the tensioning wheel tightly pulls the conveying belt, and therefore the tensioning force of the conveying belt is adjusted. The invention further provides a belt conveying system and a carriage with the tensile force adjusting device. By means of the carriage, the belt type conveying system and the tensile force adjusting device, the tensile force of the conveying belt can be adjusted.
Description
Technical field
The present invention relates to a kind of railway carriage, particularly a kind of railway carriage with belt transmission system and tensile force adjusting device.
Background technology
The Container Loading envelope of van transporter is closed rectangular structure, and its rear end is provided with car door.During loading, goods by carrying fork truck to car door, then by artificial by goods movement in envelope, and start to put goods successively to the order of envelope rear end from envelope front position.During unloading, manually according to the order of envelope rear end to envelope front end by the goods movement in envelope to outside envelope.Not only efficiency is low for the handling goods mode of above-mentioned van transporter, more labor intensive.
Summary of the invention
In view of above content, be necessary to provide a kind of handling goods efficiency that is applied to high and save the comprising in the boxcar of belt conveyor of manpower, and the tensile force adjusting device that can regulate the tensile force of described belt conveyor.
There is a need to provide a kind of belt transmission system applying described tensile force adjusting device.
There is a need to provide a kind of railway carriage applying described belt transmission system.
A kind of tensile force adjusting device, for regulating the tensile force of belt conveyor, described tensile force adjusting device comprises tension wheel and provides the thrust supplying module of thrust to described tension wheel, described belt conveyor is set around described tension wheel, described thrust supplying module comprises slide block, support and pipe link, described pipe link comprises the body of rod and is arranged at the connecting portion of the described body of rod, described slide block to be movably set on described support and to be fixed on the described body of rod, described connecting portion is movably set on described tension wheel, when described slide block is along described bracket slide, described pipe link promotes described tension wheel and moves, described tension wheel strains described belt conveyor, thus regulate the tensile force of belt conveyor.
A kind of belt transmission system, comprises belt conveyor and tensile force adjusting device as above.
A kind of railway carriage, comprises base plate and is arranged at the belt transmission system on described base plate, and described belt transmission system comprises belt conveyor and tensile force adjusting device as above.
Compared to prior art, the present invention, by arranging described thrust supplying module in described tensile force adjusting device, provide the thrust of described slide block gravity several times to move to promote described tension wheel to described tension wheel, thus regulates the tensile force of described belt conveyor.The present invention also improves the efficiency of cargo handing by arranging described belt transmission system in described railway carriage, and saves manpower.
Accompanying drawing explanation
The schematic diagram of the railway carriage that Fig. 1 provides for embodiments of the present invention.
The belt transmission system lateral plan that Fig. 2 is the railway carriage shown in Fig. 1.
Fig. 3 is the schematic diagram of the tension wheel in the belt transmission system shown in Fig. 2.
Fig. 4 is the schematic diagram of the thrust supplying module of the belt transmission system shown in Fig. 2.
Fig. 5 is the schematic diagram of the connecting element of the thrust supplying module shown in Fig. 4.
Fig. 6 is the force analysis figure of the slide block in the belt transmission system shown in Fig. 2.
Main element nomenclature
| Railway carriage | 1000 |
| Base plate | 100 |
| Belt transmission system | 200 |
| Belt conveyor | 210 |
| Tensile force adjusting device | 220 |
| Tension wheel | 230 |
| Wheel shaft | 232 |
| Roller | 236 |
| Thrust supplying module | 240 |
| Slide block | 242 |
| Support | 246 |
| Hypotenuse | 248 |
| Pipe link | 250 |
| The body of rod | 252 |
| Connecting portion | 256 |
| Chute | 258 |
| Connecting element | 260 |
| Stop section | 262 |
| Graticule | 263 |
| Sliding part | 266 |
| Mounting hole | 268 |
| Driving wheel | 282 |
| Flower wheel | 286 |
| Erecting frame | 290 |
| Horizontal slot | 291 |
| Scale graduation | 293 |
| Protective case | 296 |
Following detailed description of the invention will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
It should be noted that, when assembly is called as " being fixed on " another assembly, directly can there is assembly placed in the middle in it on another assembly or also.When an assembly is considered to " connection " another assembly, it can be directly connected to another assembly or may there is assembly placed in the middle simultaneously.When an assembly is considered to " being arranged at " another assembly, it can be set directly on another assembly or may there is assembly placed in the middle simultaneously.Term as used herein " vertical ", " level ", "left", "right" and similar statement are just for illustrative purposes.
Unless otherwise defined, all technology used herein and scientific terminology are identical with belonging to the implication that those skilled in the art of the present invention understand usually.The object of term used in the description of the invention herein just in order to describe specific embodiment, is not intended to be restriction the present invention.
Below in conjunction with accompanying drawing, some embodiments of the present invention are elaborated.When not conflicting, the feature in following embodiment and embodiment can combine mutually.
Refer to Fig. 1, embodiments of the present invention provide a kind of railway carriage 1000.Described railway carriage 1000 comprises base plate 100 and is arranged at the belt transmission system 200 on described base plate 100.Described railway carriage 1000 can for general lorry, semi-mounted lorry, entirely hang the railway carriage of the power actuated vehicles such as lorry, container car or box-body truck.Described belt transmission system 200, for transmitting goods, to improve the efficiency of cargo handing, and saves manpower.
Refer to Fig. 2 to Fig. 5, described belt transmission system 200 comprises belt conveyor 210, tensile force adjusting device 220, driving wheel 282, some flower wheels 286 and erecting frame 290.Described tensile force adjusting device 220, described driving wheel 282 and described flower wheel 286 are arranged on described erecting frame 290.
Described tensile force adjusting device 220 comprises tension wheel 230 and provides the thrust supplying module 240 of thrust to described tension wheel 230.Described tension wheel 230 comprises wheel shaft 232 and is set in the roller 236 on described wheel shaft 232.Described belt conveyor 210 is set around on described roller 236, and described roller 236 can rotate relative to described wheel shaft 232.Described thrust supplying module 240 comprises slide block 242, support 246, pipe link 250 and connecting element 260.Described support 246 comprises hypotenuse 248.Described pipe link 250 comprises the body of rod 252 and is arranged at the connecting portion 256 of the described body of rod 252.Described connecting portion 256 is provided with the chute 258 perpendicular to the described body of rod 252.The sliding part 266 that described connecting element 260 comprises stop section 262 and extends along the centre of side, described stop section 262.Described stop section 262 is provided with graticule 263.Described connecting element 260 is also provided with the mounting hole 268 running through described stop section 262 and described sliding part 266.In the present embodiment, the width of described chute 258 is more than or equal to the external diameter of described sliding part 266, and be less than the external diameter of described stop section 262, to make described sliding part 266 can through described chute 258 and described stop section 262 block in the both side edges of described chute 258.
Described erecting frame 290 is provided with horizontal slot 291.One end of described wheel shaft 232 is arranged in described horizontal slot 291, and can move in described horizontal slot 291.Described erecting frame 290 is provided with scale graduation 293 near described wheel shaft 232 place, and described scale graduation 293 is parallel to described horizontal slot 291.Described erecting frame 290 is also provided with the protective case 296 for the protection of described scale graduation 293.In the present embodiment, described protective case 296 is transparent.In other embodiments, described protective case 296 can be opaque, and now, described protective case 296 is provided with the perforate for showing described scale graduation 293.
Described belt conveyor 210 connects described driving wheel 282, described flower wheel 286 and described tension wheel 230.For regulating the tensile force of described belt conveyor 210, there is the problems such as skidding, sideslip to prevent described belt conveyor 210 in described tensile force adjusting device 220.Described driving wheel 282 is connected with a motor (not shown), and described motor drives described driving wheel 282 to rotate.Described driving wheel 282 drives described flower wheel 286 and described tension wheel 230 to rotate by described belt conveyor 210.Described belt conveyor 210 moves with the rotation of described driving wheel 282, described flower wheel 286 and described tension wheel 230.
During assembling, being movably set on described hypotenuse 248 of described slide block 242, and be fixed on the described body of rod 252 by mode such as lock screw, welding etc.Described sliding part 266 is through described chute 258, and described stop section 262 block is in the both side edges of described chute 258.Described wheel shaft 232 one end be arranged in described horizontal slot 291 is locked in described mounting hole 268, to be fixed on described wheel shaft 232 by described connecting element 260, and is movably set on described wheel shaft 232 by described connecting portion 256.After having assembled, the described body of rod 252 is in horizontality, and described chute 258 is in vertical state.
In the present embodiment, described slide block 242 comprises sliding eye and fixed orifice.During assembling, described hypotenuse 248 passes described sliding eye, to be movably set on described hypotenuse 248 by described slide block 242.The described body of rod 252 is provided with mounting hole, and screw is provided with mounting hole, to be fixed on the described body of rod 252 by described slide block 242 through the fixed orifice of described slide block 242 and the described body of rod 252.Because the described body of rod 252 is fixedly connected with described slide block 242, and the sliding eye of described slide block 242 is set on described hypotenuse 248, and therefore, described hypotenuse 248 can support the described body of rod 252 by described slide block 242, is in horizontality to make the described body of rod 252.
During use, described slide block 242 under gravity, has the trend glided along described hypotenuse 248.When described slide block 242 glides along described hypotenuse 248, described pipe link 250 moves down and promotes described wheel shaft 232 and moves in described horizontal slot 291.Described roller 236 is mobile with the movement of described wheel shaft 232, thus drives described belt conveyor 210 to move to be strained by described belt conveyor 210, and then regulates the tensile force of described belt conveyor 210.Described belt conveyor 210 draws tighter, and its tensile force is larger, and described belt conveyor 210 gives the thrust of described slide block 242 also larger by described tension wheel 230 and described pipe link 250.When described belt conveyor 210 increases to the thrust of described slide block 242 to make described slide block 242 stress balance, described slide block 242 is still on described hypotenuse 248.In the present embodiment, the path of motion of described pipe link 250 is identical with the path of motion of described slide block 242, and described wheel shaft 232 is mobile in described horizontal slot 291.
When described belt conveyor 210 in use becomes slack, the tensile force of described belt conveyor 210 diminishes, and described belt conveyor 210 also diminishes to the thrust of described slide block 242 by described tension wheel 230 and described pipe link 250.Described slide block 242 is because gliding along described hypotenuse 248 by force unbalance, and described pipe link 250 promotes described wheel shaft 232 and moves in described horizontal slot 291.Described roller 236 is mobile with the movement of described wheel shaft 232, thus drives described belt conveyor 210 to move to be strained by described belt conveyor 210, to increase the tensile force of described belt conveyor 210.When the tensile force of described belt conveyor 210 increases, described belt conveyor 210 also increases to the thrust of described slide block 242 by described tension wheel 230 and described pipe link 250.When described belt conveyor 210 increases to the thrust of described slide block 242 to make described slide block 242 stress balance, described slide block 242 is still on described hypotenuse 248.
It can thus be appreciated that, in use, once described belt conveyor 210 relaxes, described slide block 242 will glide along described hypotenuse 248, move in described horizontal slot 291 to promote described wheel shaft 232 by described pipe link 250, thus strained by described belt conveyor 210 by described roller 236, and then the tensile force of described belt conveyor 210 is increased.When the tensile force of described belt conveyor 210 increases to a certain degree, described slide block 242 stress balance, thus be still on described hypotenuse 248.
Refer to Fig. 6, the power that described slide block 242 is subject to comprises gravity g, the described body of rod 252 to the thrust f ' of described slide block 242, described hypotenuse 248 to the bearing capacity F1 of described the slide block 242 and friction force F2 between described slide block 242 and described hypotenuse 248.In the present embodiment, the leaning angle of described hypotenuse 248 is θ, and described gravity g is parallel to component g2=g × sin θ of described hypotenuse 248 perpendicular to component g1=g × cos θ of described hypotenuse 248, described gravity g.Component f ' the 1=f ' × sin θ of thrust f ' perpendicular to described hypotenuse 248 of described slide block 242 given by the described body of rod 252, and the described body of rod 252 is parallel to component f ' the 2=f ' × cos θ of described hypotenuse 248 to the thrust f ' of described slide block 242.Described slide block 242 is to positive pressure F3=g1+f ' 1=g × cos θ+f ' × sin θ of described hypotenuse 248, the bearing capacity F1 of described hypotenuse 248 and described slide block 242 are to the positive pressure F3 equal and opposite in direction of described hypotenuse 248 and direction is contrary, namely, F1=F3, that is described slide block 242 is stress balance on the direction perpendicular to described hypotenuse 248.Friction force F2=μ F3=μ (g × cos θ+f ' × sin θ) between described slide block 242 and described hypotenuse 248.In the present embodiment, the quality of described slide block 242 is much larger than the quality of described pipe link 250, the gravity of described slide block 242 is also much larger than the gravity of described pipe link 250, therefore, when analyzing described slide block 242 stressed, have ignored the gravity of described pipe link 250 to the impact of described slide block 242.
When described slide block 242 is still on described hypotenuse 248, described slide block 242 is stress balance on the direction being parallel to described hypotenuse 248, i.e. g2=f ' 2+F2, that is, g × sin θ=f ' × cos θ+μ (g × cos θ+f ' × sin θ) (formula one).Can be released by formula one, f '=g (sin θ-μ cos θ)/(cos θ+μ sin θ).Because the described body of rod 252 gives the thrust f of described tension wheel 230 (namely to described wheel shaft 232) with the described body of rod 252 to the thrust f ' equal and opposite in direction of described slide block 242, direction is contrary, therefore, f=f '=g (sin θ-μ cos θ)/(cos θ+μ sin θ), that is, thrust f=g (sin θ-μ cos θ)/(cos θ+μ sin θ) (formula two) of described tension wheel 230 given by the described body of rod 252.
From formula two, when the tiltangleθ of described hypotenuse 248 is greater than 45 degree, the described body of rod 252 is greater than the gravity g of described slide block 242 to the thrust f of described tension wheel 230, and when θ is greater than 45 degree and is less than 90 degree, θ is larger, and f is larger.That is, in the present embodiment, the described body of rod 252 is several times of the gravity g of described slide block 242 to the thrust f of described tension wheel 230.Be appreciated that, the described body of rod 252 equals described tension wheel 230 to the tensile force of described belt conveyor 210 to the thrust f of described tension wheel 230, therefore, the described body of rod 252 is the tensile force that described tensile force adjusting device 220 is supplied to described belt conveyor 210 to the thrust f of described tension wheel 230, that is, described tensile force adjusting device 220 is supplied to several times that the tensile force of described belt conveyor 210 is the gravity g of described slide block 242.
In the present invention, the tensile force being supplied to described belt conveyor 210 due to described tensile force adjusting device 220 is several times of the gravity g of described slide block 242, and therefore, the slide block 242 that the present invention adopts quality less, just can provide the comparatively high thrust of described tension wheel 230.When the quality of described slide block 242 is less, the small volume of described slide block 242, the space taken are less, and potential safety hazard is also lower.
Be appreciated that described belt conveyor 210 in use can be elongated thus become lax, the degree that described belt conveyor 210 is elongated is the degree of tension of described belt conveyor 210.The present invention is provided with near described wheel shaft 232 place the scale graduation 293 being parallel to described horizontal slot 291 on described erecting frame 290, and graticule 263 is provided with on the stop section 262 of described connecting element 260, user is by observing the scale of the described scale graduation 293 of described graticule 263 aligning, just can know the degree of tension of described belt conveyor 210, thus be convenient to the degree of tension that user understands described belt conveyor 210 intuitively.
In the present invention, when described belt conveyor 210 is in initial condition (namely described belt conveyor 210 is not elongated), described graticule 263 aligns (as shown in Figure 2) with the initial scale 0 of described scale graduation 293.When described belt conveyor 210 becomes lax in use procedure because being elongated, described pipe link 250 can promote described wheel shaft 232 and move in described horizontal slot 291, until described slide block 242 stress balance thus be still on described hypotenuse 248, described wheel shaft 232 just stops in described horizontal slot 291.Because described connecting element 260 is fixed on described wheel shaft 232, therefore, when described wheel shaft 232 moves, described connecting element 260 also moves thereupon.Now, the scale of the described scale graduation 293 aimed at by the graticule 263 observing described connecting element 260, just can know the degree of tension of described belt conveyor 210.The experiment that the degree of tension of the described belt conveyor 210 on described scale graduation 293 representated by each scale can pass through in advance and obtaining.
The present invention by arranging described thrust supplying module 240 in described tensile force adjusting device 220, provide the thrust of described slide block 242 gravity several times to move to promote described tension wheel 230 to described tension wheel 230, thus regulate the tensile force of described belt conveyor 210.The thrust of providing to described tension wheel 230 due to described thrust supplying module 240 is described slide block 242 gravity several times, therefore, and the comparatively high thrust that the slide block 242 of lighter weight provide also can to described tension wheel 230.Again due to the small volume of the slide block 242 of lighter weight, thus save space, and reduce potential safety hazard.The present invention also by arranging described scale graduation 293 near described wheel shaft 232 place on described erecting frame 290, and arranges graticule 263, with the degree of tension making user can understand described belt conveyor 210 intuitively on the stop section 262 of described connecting element 260.In the present invention also by arranging the efficiency that described belt transmission system 200 improves cargo handing in described railway carriage 1000, and save manpower.
Above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to above embodiment to invention has been detailed description, those of ordinary skill in the art should be appreciated that and can modify to technical scheme of the present invention or be equal to the spirit and scope of replacing and should not depart from technical solution of the present invention.
Claims (10)
1. a tensile force adjusting device, for regulating the tensile force of belt conveyor, it is characterized in that: described tensile force adjusting device comprises tension wheel and provides the thrust supplying module of thrust to described tension wheel, described belt conveyor is set around described tension wheel, described thrust supplying module comprises slide block, support and pipe link, described pipe link comprises the body of rod and is arranged at the connecting portion of the described body of rod, described slide block to be movably set on described support and to be fixed on the described body of rod, described connecting portion is movably set on described tension wheel, when described slide block is along described bracket slide, described pipe link promotes described tension wheel and moves, described tension wheel strains described belt conveyor, thus regulate the tensile force of belt conveyor.
2. tensile force adjusting device as claimed in claim 1, it is characterized in that: described tension wheel comprises wheel shaft and is set in the roller on described wheel shaft, described connecting portion is movably set on described wheel shaft, and described belt conveyor is set around on described roller.
3. tensile force adjusting device as claimed in claim 2, it is characterized in that: described thrust supplying module also comprises the connecting element for being movably set in by described connecting portion on described wheel shaft, the sliding part that described connecting element comprises stop section and extends along the centre of side, described stop section, described connecting element is also provided with the mounting hole running through described stop section and described sliding part.
4. tensile force adjusting device as claimed in claim 3, it is characterized in that: described connecting portion is provided with the chute perpendicular to the described body of rod, described sliding part is through described chute, described stop section block is in the both side edges of described chute, one end of described wheel shaft is locked in described mounting hole, so that described connecting element is fixed on described wheel shaft, and described connecting portion is movably set on described wheel shaft, when described slide block glides along described support, described pipe link moves down, and promotes described wheel shaft and move.
5. tensile force adjusting device as claimed in claim 1, it is characterized in that: described support comprises hypotenuse, described slide block is movably set on described hypotenuse, when described slide block is still on described hypotenuse, described pipe link gives thrust f=g (sin θ-μ cos θ)/(the cos θ+μ sin θ) of described tension wheel, and wherein, g represents the gravity of described slide block, μ represents the friction coefficient of described hypotenuse and described slide block, and θ represents the leaning angle of described hypotenuse.
6. a belt transmission system, is characterized in that: described belt transmission system comprises belt conveyor and the tensile force adjusting device according to any one of Claims 1 to 5.
7. belt transmission system as claimed in claim 6, it is characterized in that: described belt transmission system also comprises erecting frame, described tension wheel is arranged on erecting frame, described erecting frame is provided with scale graduation near described wheel shaft place, described stop section is provided with graticule, when described belt conveyor is in initial condition, described graticule aligns with the initial scale of described scale graduation, and the scale of the described scale graduation that described graticule is aimed at represents the degree of tension of described belt conveyor.
8. belt transmission system as claimed in claim 7, is characterized in that: described erecting frame is provided with the protective case for the protection of described scale graduation.
9. belt transmission system as claimed in claim 7, it is characterized in that: described erecting frame is provided with horizontal slot, one end that described wheel shaft locks described mounting hole is arranged in described horizontal slot, when described slide block glides along described support, described pipe link promotes described wheel shaft and moves in described horizontal slot.
10. a railway carriage, comprises base plate and is arranged at the belt transmission system on described base plate, it is characterized in that: described belt transmission system comprises belt conveyor and the tensile force adjusting device according to any one of Claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510639675.5A CN105172654B (en) | 2015-09-30 | 2015-09-30 | Railway carriage and its belt Transmission system and tensile force adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510639675.5A CN105172654B (en) | 2015-09-30 | 2015-09-30 | Railway carriage and its belt Transmission system and tensile force adjusting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105172654A true CN105172654A (en) | 2015-12-23 |
| CN105172654B CN105172654B (en) | 2017-08-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510639675.5A Active CN105172654B (en) | 2015-09-30 | 2015-09-30 | Railway carriage and its belt Transmission system and tensile force adjusting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112720018A (en) * | 2020-12-25 | 2021-04-30 | 浙江赫科智能装备有限公司 | Numerical control machine tool and machining method thereof |
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| JPH08189551A (en) * | 1995-01-09 | 1996-07-23 | Nippon Seiko Kk | Automatic tensioner |
| CN2465981Y (en) * | 2001-03-05 | 2001-12-19 | 姚天锡 | Automotive compartment moving device |
| CN2665459Y (en) * | 2003-12-16 | 2004-12-22 | 中国科学院电工研究所 | Bi-directional chain-drive tensioning device |
| US20070025833A1 (en) * | 2005-04-13 | 2007-02-01 | Lutz David W | Conveyor trailer |
| CN202597613U (en) * | 2012-03-23 | 2012-12-12 | 成都大宏立机器制造有限公司 | Crusher belt tension device |
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2015
- 2015-09-30 CN CN201510639675.5A patent/CN105172654B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08189551A (en) * | 1995-01-09 | 1996-07-23 | Nippon Seiko Kk | Automatic tensioner |
| CN2465981Y (en) * | 2001-03-05 | 2001-12-19 | 姚天锡 | Automotive compartment moving device |
| CN2665459Y (en) * | 2003-12-16 | 2004-12-22 | 中国科学院电工研究所 | Bi-directional chain-drive tensioning device |
| US20070025833A1 (en) * | 2005-04-13 | 2007-02-01 | Lutz David W | Conveyor trailer |
| CN202597613U (en) * | 2012-03-23 | 2012-12-12 | 成都大宏立机器制造有限公司 | Crusher belt tension device |
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| CN112720018A (en) * | 2020-12-25 | 2021-04-30 | 浙江赫科智能装备有限公司 | Numerical control machine tool and machining method thereof |
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| CN105172654B (en) | 2017-08-22 |
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Effective date of registration: 20211014 Address after: 410200 Shengtong Industrial Park, No. 109, Section 2, Tengfei Road, Wangcheng economic and Technological Development Zone, Changsha City, Hunan Province Patentee after: Shengtong Science and Technology Group Co.,Ltd. Address before: 410205 room 909, Wuqiang science and Technology Park, No. 2, Lutian Road, Changsha high tech Development Zone, Changsha City, Hunan Province Patentee before: HUNAN SNTO TIANLI AUTOMOBILE Co.,Ltd. |