CN212425137U - Concrete block hoist device - Google Patents
Concrete block hoist device Download PDFInfo
- Publication number
- CN212425137U CN212425137U CN202020604412.7U CN202020604412U CN212425137U CN 212425137 U CN212425137 U CN 212425137U CN 202020604412 U CN202020604412 U CN 202020604412U CN 212425137 U CN212425137 U CN 212425137U
- Authority
- CN
- China
- Prior art keywords
- concrete block
- fixedly connected
- hoist
- mount
- splint
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229920001971 elastomer Polymers 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 6
- 244000043261 Hevea brasiliensis Species 0.000 claims description 4
- 229920003052 natural elastomer Polymers 0.000 claims description 4
- 229920001194 natural rubber Polymers 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 230000002457 bidirectional effect Effects 0.000 claims description 2
- 230000006378 damage Effects 0.000 abstract description 7
- 239000006185 dispersion Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Landscapes
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The utility model relates to a concrete block production and processing technology field just discloses a concrete block hoist device, which comprises a roof, the front and the equal fixedly connected with slide rail in the back of roof, the left surface and the equal fixedly connected with baffle of right flank of slide rail, be provided with the mount directly over the roof. This concrete block hoist device, rotate through the two-way threaded rod of driving motor control, make splint shrink, realized the quick fixed to concrete block, need relapse the comparatively troublesome condition of ligature concrete and appear when having avoided hoist and mount, the work load has been reduced, the work efficiency has been improved, hoist the device through the mount, two-way threaded rod and pipe dispersion weight, the stability of the device has been guaranteed, avoided using lifting rope hoist and mount concrete block to break easily and lead to the device to take place to incline and make concrete block drop and cause the condition of destruction to appear, economic loss has been reduced.
Description
Technical Field
The utility model relates to a concrete block production and processing technology field specifically is a concrete block hoist device.
Background
In the aerated concrete block processing process, the concrete mould is bulky, generally pours and cuts after curing and shaping a whole large concrete block, thereby forming a small concrete block meeting the size, wherein in the process of transferring a large concrete block to cutting equipment, because the large concrete block is bulky, hoisting equipment is usually utilized for hoisting, and therefore a concrete block hoisting device is needed. The concrete block hoisting device in the prior art needs to repeatedly perform multi-channel binding on concrete blocks in the hoisting process, and needs to untie more bound ropes after being hoisted to a target position, so that the workload is increased, and the working efficiency is reduced.
For example, chinese patent application nos.: 201710203102.7, a concrete block lifting device substantially as described herein, comprising: including roof and side splint, the side splint are L shape structure, the position that the side splint are close to the upper end is equipped with the bar through-hole, the bar through-hole on two side splint is passed respectively to the roof both sides, be equipped with first gyro wheel on the end wall of bar through-hole, be equipped with the guide rail on two sides of roof and bar through-hole vertically, first gyro wheel setting is in the guide rail, the roller shaft one end of first gyro wheel is passed through the end wall connection of bearing with the bar through-hole, be equipped with two at least hoisting rings on the side splint, lifting rope one end is fixed on the hoisting ring, the other end. According to the invention, the concrete block and the hoisting device are quickly fixed by matching the side clamping plates, the sliding rail, the guide pulley, the lifting rope and the hook, so that the trouble that concrete needs to be repeatedly bound during hoisting is avoided, the workload is reduced, and the working efficiency is improved. Although the working efficiency is improved, the device is hoisted by the hoisting rope, the hoisting rope is easy to break after long-time use, so that the device is inclined, concrete blocks fall off and damage is caused, and economic loss is caused.
Therefore, the inventor provides a concrete block hoisting device with study and improvement on the existing structure and deficiency in view of the experience of abundant design development and actual manufacturing in the related industry for years, so as to achieve the purpose of higher practical value.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
Not enough to prior art, the utility model provides a concrete block hoist device has solved prior art's concrete block hoist device and need carry out the multichannel ligature to the concrete piece repeatedly at the process of hoist and mount, after hoist and mount to the target location, need untie the more rope of binding again, has increased work load, has reduced work efficiency's problem.
(II) technical scheme
In order to achieve the above object, the utility model provides a following technical scheme: a concrete block hoisting device comprises a top plate, wherein slide rails are fixedly connected to the front surface and the back surface of the top plate, baffle plates are fixedly connected to the left side surface and the right side surface of each slide rail, a fixed frame is arranged right above the top plate, clamping plates are sleeved on the left side and the right side of the outer surface of the top plate, connecting rods are fixedly connected to the front side and the back side of the upper surface of each clamping plate, round pipes are fixedly connected to the upper surface of each connecting rod, connecting pieces are fixedly connected to the front side and the back side of the upper surface of the top plate, a connecting shaft is inserted into the top of the front surface of each connecting piece, first bevel gears are fixedly connected to the front side and the back side of the outer surface of each connecting shaft, two-way threaded rods are arranged on the inner side surfaces of the round pipes, second bevel gears are sleeved, the middle part fixedly connected with of mount upper surface connects the shell, the rear side fixedly connected with driving motor of mount upper surface, driving motor's output fixedly connected with driving gear, driving gear and driven gear meshing, the lower fixed surface of splint is connected with the bottom plate, logical groove has been seted up to the upper surface of bottom plate, the inside that leads to the groove is provided with the axis of rotation, the live-rollers has been cup jointed to the surface of axis of rotation, the middle part fixedly connected with spliced pole of joint shell upper surface, the top of spliced pole surface is rotated and is connected with rings.
Preferably, the outer surface of the rotating roller is provided with a rubber protective sleeve, and the outer surface of the rubber protective sleeve is provided with anti-skid grains.
Preferably, the inner wall of pipe is provided with the internal thread, the external screw thread and the internal thread threaded connection of two-way threaded rod.
Preferably, the inner side surface of the bottom plate is provided with an inclined surface, and the inclined angle of the inclined surface is between twenty and thirty-five degrees.
Preferably, T-shaped sliding grooves are formed in the front side and the rear side of the inner side face of the clamping plate, the sliding rails are T-shaped sliding rails, and the T-shaped sliding rails are connected with the T-shaped sliding grooves in a sliding mode.
Preferably, the number of splint is two sets ofly, and the medial surface of two sets of splint all is provided with the gasket, and the gasket is formed by the preparation of natural rubber material.
(III) advantageous effects
Compared with the prior art, the utility model provides a concrete block hoist device possesses following beneficial effect:
1. this concrete block hoist device, rotate through the two-way threaded rod of driving motor control, make splint shrink, realized the quick fixed to concrete block, need relapse the comparatively troublesome condition of ligature concrete and appear when having avoided hoist and mount, the work load has been reduced, the work efficiency has been improved, hoist the device through the mount, two-way threaded rod and pipe dispersion weight, the stability of the device has been guaranteed, avoided using lifting rope hoist and mount concrete block to break easily and lead to the device to take place to incline and make concrete block drop and cause the condition of destruction to appear, economic loss has been reduced.
2. This concrete block hoist device, through receive and release the surface that makes the live-rollers and concrete block's lower surface contact to splint and rotate, realized the fast loading and unloading to concrete block, avoided concrete block and the great condition that leads to difficult loading and unloading of bottom plate friction to appear, saved the time, improved operating speed.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a sectional view of the structure of the present invention;
fig. 3 is an enlarged schematic view of the structure at a position a of the present invention.
In the figure: 1. a top plate; 2. a slide rail; 3. a baffle plate; 4. a fixed mount; 5. a splint; 6. a connecting rod; 7. a circular tube; 8. connecting sheets; 9. a connecting shaft; 10. a first bevel gear; 11. a bidirectional threaded rod; 12. a second bevel gear; 13. a driven gear; 14. a connecting shell; 15. a drive motor; 16. a driving gear; 17. a base plate; 1701. a through groove; 18. a rotating shaft; 19. a rotating roller; 20. connecting columns; 21. a lifting ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a concrete block hoist device, including roof 1, roof 1's the front and the equal fixedly connected with slide rail 2 in the back, slide rail 2's the left surface and the equal fixedly connected with baffle 3 in the right flank, be provided with mount 4 directly over roof 1, splint 5 have all been cup jointed to the left and right sides of roof 1 surface, the equal fixedly connected with connecting rod 6 in both sides around the splint 5 upper surface, the last fixed surface of connecting rod 6 is connected with pipe 7, the equal fixedly connected with connection piece 8 in both sides around the roof 1 upper surface, 8 positive tops of connection piece are pegged graft and are had connecting axle 9, the first bevel gear 10 of the equal fixedly connected with in front side and the rear side of connecting axle 9 surface, the medial surface of pipe 7 is provided with two-way threaded rod 11, hoist the device through mount 4, two-way threaded rod 11 and 7 dispersion weight of pipe, the stability of the device has been guaranteed, avoided using lifting rope hoist concrete block to easily take place the The condition of causing damage is generated, the economic loss is reduced, a second bevel gear 12 is sleeved at the middle part of the outer surface of a two-way threaded rod 11, the second bevel gear 12 is meshed with a first bevel gear 10, a driven gear 13 is sleeved at the middle part of the outer surface of a connecting shaft 9, a connecting shell 14 is fixedly connected at the middle part of the upper surface of a fixing frame 4, a driving motor 15 is fixedly connected at the rear side of the upper surface of the fixing frame 4, the model of the driving motor 15 is Y180M-2, the two-way threaded rod 11 is controlled to rotate through the driving motor 15, so that the clamping plate 5 is contracted, the concrete building block is quickly fixed, the trouble that concrete needs to be repeatedly bound during hoisting is avoided, the workload is reduced, the working efficiency is improved, a driving gear 16 is fixedly connected at the output end of the driving motor 15, the driving gear 16 is meshed with, logical groove 1701 has been seted up to bottom plate 17's upper surface, the inside that leads to groove 1701 is provided with axis of rotation 18, axis of rotation 18's surface has cup jointed live-rollers 19, through receiving and releasing splint 5 and make live-rollers 19's surface and concrete block's lower surface contact rotate, the fast loading and unloading to concrete block has been realized, concrete block has been avoided and bottom plate 17 friction great condition that leads to difficult loading and unloading appears, the time is saved, the operating speed has been improved, the middle part fixedly connected with spliced pole 20 of connecting shell 14 upper surface, the top of spliced pole 20 surface is rotated and is connected with rings 21.
The utility model discloses for the convenience of being more stable when hoist and mount concrete block, consequently the surface of live-rollers 19 is provided with rubber protective sleeve, and rubber protective sleeve's surface is provided with anti-skidding line, and the setting of anti-skidding line has avoided concrete block to appear because of the unable fixed condition that leads to the unstability and easily take place the landing of live-rollers 19 when hoist and mount, has improved fixed effect.
The utility model discloses a more stable when fixed concrete block, consequently the inner wall of pipe 7 is provided with the internal thread, and the external screw thread and the internal thread threaded connection of two-way threaded rod 11 for it is more stable behind fixed concrete block, avoided loose behind fixed concrete block to lead to concrete block to drop and to cause the condition of destruction to appear to it, improved fixed effect.
The utility model discloses a more convenient hoist and mount the concrete block, therefore bottom plate 17's medial surface is provided with the inclined plane, and the inclination on inclined plane is between thirty-five degrees of twenty degrees, and suitable inclination makes more convenient when hoist and mount the concrete block, has also avoided causing the condition of destruction to the concrete block to appear simultaneously, has made things convenient for staff's use.
The utility model discloses a make splint 5 remove more steady, consequently T shape spout has all been seted up to both sides around the splint 5 medial surface, and slide rail 2 is T shape slide rail, T shape slide rail and T shape spout sliding connection for splint 5 is more steady quick at the in-process that removes, thereby can be quick hoist and mount concrete block more, has improved work efficiency.
The utility model discloses a make behind fixed concrete block more stable, consequently splint 5's quantity is two sets of, and two sets of splint 5's medial surface all is provided with the gasket, and the gasket is formed by the preparation of natural rubber material, and natural rubber has great frictional force for difficult not hard up behind fixed concrete block, also protected the concrete block simultaneously and easily destroyed.
The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.
When in use, the concrete block is placed between the two groups of bottom plates 17, the driving motor 15 is controlled to be started, the output end of the driving motor 15 rotates to drive the driving gear 16 to rotate, the driving gear 16 rotates to drive the driven gear 13 to rotate, the driven gear 13 rotates to drive the connecting shaft 9 to rotate, the connecting shaft 9 rotates to drive the first bevel gear 10 to rotate, the first bevel gear 10 rotates to drive the second bevel gear 12 to rotate, the second bevel gear 12 rotates to drive the two-way threaded rod 11 to rotate, the two-way threaded rod 11 rotates to enable the circular tube 7 to move inwards, the circular tube 7 moves inwards to drive the connecting rod 6 to move inwards, the connecting rod 6 moves inwards to drive the clamping plate 5 to move inwards through the sliding rail 2, the clamping plate 5 moves inwards to drive the bottom plates 17 to move inwards, the bottom, when the inclined surface of the bottom plate 17 contacts with the lower surface of the concrete block, the concrete block is continuously contracted, the concrete block is moved to the upper surface of the bottom plate 17 through the rotation of the rotating roller 19, the movement is stopped when the outer side surface of the concrete block contacts with the inner side surface of the clamping plate 5, the fixing of the concrete block is completed, the hook is hung on the hanging ring 21, the device is hung up by pulling the hanging ring 21, the device is put down after reaching a specified position, the driving motor 15 is controlled to be started, the output end of the driving motor 15 rotates to drive the driving gear 16 to rotate, the driving gear 16 rotates to drive the driven gear 13 to rotate, the driven gear 13 rotates to drive the connecting shaft 9 to rotate, the connecting shaft 9 rotates to drive the first bevel gear 10 to rotate, the first bevel gear 10 rotates to drive the second bevel gear 12 to rotate, the second bevel gear 12 rotates to drive the, pipe 7 moves to the outside and drives connecting rod 6 and move to the outside, connecting rod 6 moves to the outside and drives splint 5 and move to the outside through slide rail 2, splint 5 moves to the outside and drives bottom plate 17 and move to the outside, bottom plate 17 moves to the outside and drives axis of rotation 18 and move to the outside, axis of rotation 18 moves to the outside and drives live-rollers 19 and move to the outside, surface and concrete block's lower surface contact because of live-rollers 19 rotates, make concrete block pass through live-rollers 19's rotation and bottom plate 17's inclined plane and fall subaerially, the handling to concrete block has been accomplished.
To sum up, this concrete block hoist device rotates through driving motor 15 control two-way threaded rod 11, make splint 5 shrink, realized the quick fixation to concrete block, need relapse the comparatively troublesome condition of ligature concrete and appear when having avoided hoist and mount, work load has been reduced, work efficiency has been improved, hoist the device through mount 4, two-way threaded rod 11 and 7 dispersion weights of pipe, the stability of the device has been guaranteed, avoided using the lifting rope hoist concrete block to break easily and lead to the device to take place the slope and make concrete block drop and cause the condition of destruction to appear, economic loss has been reduced.
This concrete block hoist device, through receive and release splint 5 and make the surface of live-rollers 19 and concrete block's lower surface contact rotate, realized the fast loading and unloading to concrete block, avoided concrete block and bottom plate 17 friction great lead to the condition appearance of difficult loading and unloading, saved the time, improved operating speed.
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 (6)
1. The utility model provides a concrete block hoist device, includes roof (1), its characterized in that: the front and the back of the top plate (1) are both fixedly connected with a sliding rail (2), the left side and the right side of the sliding rail (2) are both fixedly connected with a baffle (3), a fixed frame (4) is arranged right above the top plate (1), clamping plates (5) are respectively sleeved on the left side and the right side of the outer surface of the top plate (1), connecting rods (6) are respectively fixedly connected on the front side and the rear side of the upper surface of the clamping plates (5), round pipes (7) are fixedly connected on the upper surface of the connecting rods (6), connecting plates (8) are respectively fixedly connected on the front side and the rear side of the upper surface of the top plate (1), a connecting shaft (9) is inserted at the front top of the connecting plate (8), first bevel gears (10) are respectively fixedly connected on the front side and the rear side of the outer surface of the connecting shaft (9), two-way threaded rods (11) are arranged on the inner, the second bevel gear (12) is meshed with the first bevel gear (10), a driven gear (13) is sleeved in the middle of the outer surface of the connecting shaft (9), the middle part of the upper surface of the fixed frame (4) is fixedly connected with a connecting shell (14), the rear side of the upper surface of the fixed frame (4) is fixedly connected with a driving motor (15), the output end of the driving motor (15) is fixedly connected with a driving gear (16), the driving gear (16) is meshed with the driven gear (13), the lower surface of the clamping plate (5) is fixedly connected with a bottom plate (17), a through groove (1701) is formed in the upper surface of the bottom plate (17), a rotating shaft (18) is arranged in the through groove (1701), a rotating roller (19) is sleeved on the outer surface of the rotating shaft (18), a connecting column (20) is fixedly connected to the middle part of the upper surface of the connecting shell (14), the top of the outer surface of the connecting column (20) is rotatably connected with a hanging ring (21).
2. The concrete block hoisting device according to claim 1, characterized in that: the outer surface of the rotating roller (19) is provided with a rubber protective sleeve, and the outer surface of the rubber protective sleeve is provided with anti-skid grains.
3. The concrete block hoisting device according to claim 1, characterized in that: the inner wall of the round pipe (7) is provided with an internal thread, and the external thread of the bidirectional threaded rod (11) is in threaded connection with the internal thread.
4. The concrete block hoisting device according to claim 1, characterized in that: the inner side surface of the bottom plate (17) is provided with an inclined surface, and the inclined angle of the inclined surface is within thirty-five degrees of twenty degrees.
5. The concrete block hoisting device according to claim 1, characterized in that: t-shaped sliding grooves are formed in the front side and the rear side of the inner side face of the clamping plate (5), the sliding rails (2) are T-shaped sliding rails, and the T-shaped sliding rails are connected with the T-shaped sliding grooves in a sliding mode.
6. The concrete block hoisting device according to claim 1, characterized in that: the quantity of splint (5) is two sets of, and the medial surface of two sets of splint (5) all is provided with the gasket, and the gasket is formed by the preparation of natural rubber material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020604412.7U CN212425137U (en) | 2020-04-21 | 2020-04-21 | Concrete block hoist device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020604412.7U CN212425137U (en) | 2020-04-21 | 2020-04-21 | Concrete block hoist device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212425137U true CN212425137U (en) | 2021-01-29 |
Family
ID=74293937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020604412.7U Active CN212425137U (en) | 2020-04-21 | 2020-04-21 | Concrete block hoist device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212425137U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112960565A (en) * | 2021-02-25 | 2021-06-15 | 寿光市炘煜注塑有限公司 | Hoisting device for processing automobile instrument desk |
| CN114888929A (en) * | 2022-04-21 | 2022-08-12 | 济南一建集团有限公司 | Locking and opening structure of aluminum alloy block mold |
-
2020
- 2020-04-21 CN CN202020604412.7U patent/CN212425137U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112960565A (en) * | 2021-02-25 | 2021-06-15 | 寿光市炘煜注塑有限公司 | Hoisting device for processing automobile instrument desk |
| CN114888929A (en) * | 2022-04-21 | 2022-08-12 | 济南一建集团有限公司 | Locking and opening structure of aluminum alloy block mold |
| CN114888929B (en) * | 2022-04-21 | 2023-09-19 | 济南一建集团有限公司 | Locking and opening structure of aluminum alloy block mold |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212425137U (en) | Concrete block hoist device | |
| CN110921534B (en) | Steel pipe grabbing and lifting device for ground building | |
| CN108892035A (en) | A kind of tubing special purpose crane | |
| CN210074624U (en) | Cable laying device that stability is high | |
| CN210763583U (en) | Deep foundation pit paying-off device | |
| CN210480697U (en) | Material lifting machine for building engineering construction | |
| CN216918480U (en) | Pipeline lifting device | |
| CN213569232U (en) | Prevent hindering hand ceramic tile hoisting machine for architectural decoration constructs | |
| CN113734982B (en) | European style double beam crane | |
| CN212581226U (en) | A prevent that overstock opens and stops reason belting automatically for hoist and mount area production usefulness | |
| CN112408192A (en) | Large plastic pipeline lifting device | |
| CN213085198U (en) | Balance hanging beam group lifting appliance | |
| CN212270804U (en) | Building engineering construction dust collecting equipment | |
| CN211470621U (en) | Lifting device with adjustable position | |
| CN212450038U (en) | Winding type engineering cable fireproof belt | |
| CN107572437A (en) | A kind of communication engineering hoist engine | |
| CN209922788U (en) | L-shaped naked eye three-dimensional lifting deduction platform | |
| CN214693054U (en) | Practical energy-concerving and environment-protective hoist device for building decoration | |
| CN210795523U (en) | Hoist device is used in sculpture of wood furniture | |
| CN214780489U (en) | High-rise building outer wall decoration construction device | |
| CN215326563U (en) | Material lifting device for steel structure high-rise building | |
| CN211169594U (en) | Portable mobile crane | |
| CN221343528U (en) | Prevent colliery lifting machine that emptys | |
| CN215666915U (en) | Portable lift platform is used to finishing work | |
| CN110790160B (en) | Rear counterweight structure for crawler crane |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210618 Address after: 110112 Tashan Road, Chenxiang street, Sujiatun District, Shenyang City, Liaoning Province Patentee after: Taiying (Liaoning) Building Materials Technology Co.,Ltd. Address before: 563100 Wuxing village, Donggongsi Town, Huichuan District, Zunyi City, Guizhou Province Patentee before: He Xuegang |