CN111576893B - Mounting device for stair railing fixing screw rod - Google Patents
Mounting device for stair railing fixing screw rod Download PDFInfo
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- CN111576893B CN111576893B CN202010438703.8A CN202010438703A CN111576893B CN 111576893 B CN111576893 B CN 111576893B CN 202010438703 A CN202010438703 A CN 202010438703A CN 111576893 B CN111576893 B CN 111576893B
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- hammering
- sliding
- rod
- screw rod
- frame body
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/06—Screw or nut setting or loosening machines
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/18—Balustrades; Handrails
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Steps, Ramps, And Handrails (AREA)
Abstract
The invention provides a mounting device for a stair railing fixing screw rod, belongs to the technical field of stair railing fixing, and aims to solve the problem of low mounting efficiency of the screw rod; the hammering mechanism and the tightening mechanism are respectively installed on the inner side of the frame body and are in transmission connection with the driving mechanism, the driving mechanism is installed on the sliding mechanism, the sliding mechanism is installed on a sliding rail on the inner side of the frame body in a sliding mode, and a bottom hole is further formed in the bottom side of the frame body. The sliding mechanism is lifted upwards, the rubber hammering head on the hammering mechanism is erected at the top end of the screw rod, the driving mechanism drives the hammering rod to reciprocate up and down to hammer the screw rod, meanwhile, the sliding plate drives the hammering mechanism and the screwing mechanism to move downwards under the action of the balancing weight, when the bottom plate is contacted with the bottom end of the frame body, a transmission gear on the screwing mechanism is meshed with an outer clamping tooth of the nut screwing barrel, and the nut screwing barrel is driven to rotate to screw the nut of the screw rod.
Description
Technical Field
The invention belongs to the technical field of stair railing fixing, and particularly relates to a mounting device for a stair railing fixing screw.
Background
At present, a stair handrail is installed on one side of a stair in most of people, a worker installing the stair handrail directly puts the stair handrail on a marble stair, the stair handrail can fall down to injure people, so that the worker installing the stair handrail generally installs a screw rod for fixing the stair handrail on one side of the stair, the worker generally uses glass to drill two installation holes before installing the screw rod, the left hand of the worker is required to firstly put one end of the screw rod into the drilled hole, when the left hand of the worker puts one end of the screw rod into the drilled hole, the right hand of the worker needs to hold an iron hammer, the right hand of the worker needs to control the iron hammer to swing up and down, the iron hammer swings up and down to smash the lower part of the screw rod into the installation hole, when the lower part of the screw rod is positioned in the installation hole, the right hand of the worker needs to replace a wrench, one end of the screw rod needs to be tightly clamped by the right hand of the worker, and then the right hand of the worker can swing the wrench left and right, the swing energy about the spanner prevents when the workman from installing stair railing with the screw button is tight, and the screw rod can deviate from in the mounting hole, and the workman has just so accomplished the work of installation stair railing screw rod, if the workman still need with the during operation of installation stair railing screw rod in another mounting hole, the workman changes the work that the repeated above-mentioned operation of mounting screw rod can also install stair railing screw rod in another mounting hole.
Based on the above, the workman right hand needs the luffing motion iron hammer to pound the screw rod and hit need expend the great strength of workman, and the workman right hand needs the horizontal hunting spanner to need expend longer time with the screw button fastening simultaneously, and the efficiency of workman manual installation stair railing screw rod is lower moreover.
Disclosure of Invention
In order to solve the technical problems, the invention provides a mounting device for a stair handrail fixing screw rod, which aims to solve the problems that a worker smashes the screw rod and consumes large force, and swinging a wrench to tighten the screw rod takes long time, so that the screw rod mounting efficiency is low.
The invention is used for the purpose and the efficacy of the installation device of the stair railing fixing screw rod, and is achieved by the following specific technical means:
a mounting device for a stair railing fixing screw rod comprises a hammering mechanism and a tightening mechanism; the hammering mechanism and the tightening mechanism are respectively installed on the inner side of the frame body and are in transmission connection with the driving mechanism, the driving mechanism is installed on the sliding mechanism, the sliding mechanism is installed on a sliding rail on the inner side of the frame body in a sliding mode, and a bottom hole is further formed in the bottom side of the frame body.
Furthermore, slide mechanism includes slide, balancing weight and U type regulation pole, the both ends of slide all are equipped with the guide way and slide and clamp on the slide rail, and the centre of slide still is fixed with two sets of balancing weights, it has the U type to adjust the pole still to alternate on the slide.
Furthermore, the upper and lower both ends that the slide was alternated out to the U type regulation pole all are equipped with the limiting plate, and the frame body is worn out on the top of U type regulation pole, U type regulation pole bottom still is connected with the bottom plate.
Further, hammering mechanism includes hammering pole, rubber hammering head, goes up baffle and reset spring, hammering pole slip interlude in the centre of slide, and hammering pole's bottom still is connected with rubber hammering head, the upper end of hammering pole upwards wears out the slide cover and is equipped with reset spring and is connected with the overhead gage, and hammering pole's top still is equipped with the draw-in groove.
Furthermore, the tightening mechanism comprises a vertical transmission rod, clamping plates, a transverse bevel gear, a transmission gear, a U-shaped frame, a nut tightening barrel, an outer clamping edge and outer clamping teeth, the vertical transmission rod is rotatably embedded in one end of the sliding plate, the vertical transmission rod penetrates through the upper end and the lower end of the sliding plate and is connected with the clamping plates respectively, the transverse bevel gear is connected to the top end of the vertical transmission rod, the transmission gear is clamped at the bottom end of the vertical transmission rod and can be meshed with the outer clamping teeth, the outer clamping teeth are arranged at the upper end of the outer side of the nut tightening barrel, and the outer clamping edge is arranged at the bottom of the outer side of the nut tightening barrel and is rotatably embedded in the middle of the bottom end of the inner side of the frame body.
Further, the outer diameter of the transmission gear is 1/2 of the outer diameter of the circumference where the outer clamping teeth are located.
Further, the nut screwing barrel is further arranged right above the bottom hole, a hexagonal hole is further formed in the middle of the nut screwing barrel, and the inner diameter of the bottom hole is larger than that of the hexagonal hole.
Furthermore, the driving mechanism comprises a driving device, a cam and a vertical bevel gear, the cam is clamped on a transmission shaft at the front end of the driving device, the bottom end of the cam is inserted into the clamping groove, the vertical bevel gear is also clamped at the front end of the transmission shaft and is in meshed connection with the horizontal bevel gear, and the driving device comprises a driving motor and a speed reducer.
The invention at least comprises the following beneficial effects:
the sliding mechanism is lifted upwards through the U-shaped adjusting rod, the frame body is inserted to the outer side of the screw rod through the bottom hole, the rubber hammering head on the hammering mechanism is erected at the top end of the screw rod, the driving mechanism drives the cam to rotate, the hammering rod reciprocates up and down under the pressing action of the cam and the elastic force of the return spring to hammer the screw rod, and meanwhile, the sliding plate drives the hammering mechanism and the screwing mechanism to move downwards under the action of the balancing weight.
The bottom of the U-shaped adjusting rod is connected with the bottom plate, when the bottom plate is contacted with the bottom end of the frame body, the hammering mechanism finishes hammering and continues to move without hammering force on the screw rod, the nut on the screw rod falls into the nut screwing barrel at the moment, the transmission gear on the screwing mechanism is meshed with the outer clamping teeth of the nut screwing barrel to drive the nut screwing barrel to rotate so as to screw the nut of the screw rod.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is an enlarged schematic view of the structure at a of the present invention.
Fig. 3 is a schematic front view of fig. 1 according to the present invention.
Fig. 4 is a schematic structural view of the drive gear engaged with the external teeth after the screw rod of the present invention is hammered to the bottom.
Fig. 5 is an enlarged schematic view of the invention at B.
Fig. 6 is a schematic front view of the invention shown in fig. 4.
FIG. 7 is a schematic side view of the device of FIG. 4 according to the present invention.
Fig. 8 is a schematic structural view of the nut screwing cylinder according to the present invention.
In the drawings, the corresponding relationship between the component names and the reference numbers is as follows: 1. a frame body; 101. a slide rail; 102. a bottom hole; 2. a sliding mechanism; 201. a slide plate; 2011. a guide groove; 2012. a balancing weight; 202. a U-shaped adjusting rod; 2021. a limiting plate; 2022. a base plate; 3. a hammering mechanism; 301. a hammering rod; 3011. a rubber hammering head; 3012. an upper baffle plate; 3013. a card slot; 302. a return spring; 4. a tightening mechanism; 401. a vertical transmission rod; 4011. clamping a plate; 4012. a transverse bevel gear; 4013. a transmission gear; 402. a U-shaped frame; 403. the nut is screwed into the cylinder; 4031. externally clamping edges; 4032. an outer latch; 4033. a hexagonal hole; 5. a drive mechanism; 501. a drive device; 502. a cam; 503. a vertical bevel gear.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The embodiment is as follows:
as shown in figures 1 to 8:
the invention provides a mounting device for a stair handrail fixing screw, which comprises a hammering mechanism 3 and a tightening mechanism 4, wherein sliding rails 101 are mounted on the left side and the right side of the inside of a frame body 1 through bolts, a bottom hole 102 is formed in the bottom of the frame body 1, a sliding mechanism 2 is arranged on the sliding rails 101 in a sliding mode, a driving mechanism 5 is mounted on the sliding mechanism 2, the hammering mechanism 3 and the tightening mechanism 4 are mounted on the inner side of the frame body 1, and the hammering mechanism 3 and the tightening mechanism 4 are in transmission connection with the driving mechanism 5.
The sliding mechanism 2 comprises a sliding plate 201, balancing weights 2012, a U-shaped adjusting rod 202, a limiting plate 2021 and a bottom plate 2022, guide grooves 2011 are formed on the left side and the right side of the sliding plate 201, the sliding plate 201 is slidably clamped on the sliding rail 101 through the guide grooves 2011, the middle part of the sliding plate 201 is connected with the two balancing weights 2012, the U-shaped adjusting rod 202 is inserted on the sliding plate 201, the U-shaped adjusting rod 202 passes through the top of the frame body 1, the sliding plate 201 can slide up and down in the frame body 1 under the guiding action of the sliding rail 101, and the weight of the sliding plate 201 is increased by the counterweight 2012, in the hammering process, the sliding plate 201 can slide downwards under the action of gravity, the limiting plates 2021 are arranged at the upper end and the lower end of the U-shaped adjusting rod 202 penetrating out of the sliding plate 201, the bottom end of the U-shaped adjusting rod 202 is connected with the bottom plate 2022, when the U-shaped adjusting rod 202 is lifted upwards, the sliding plate 201 can move upwards along with the U-shaped adjusting rod 202, so that the rubber hammering head 3011 of the hammering mechanism 3 can stand on the top end of the screw rod.
Hammering mechanism 3 includes hammering pole 301, rubber hammering head 3011, go up baffle 3012 and reset spring 302, slide 201 middle part slides and has worn to connect hammering pole 301, hammering pole 301 bottom is connected with rubber hammering head 3011, hammering pole 301 top is connected with baffle 3012, go up and be connected with reset spring 302 between baffle 3012 and the slide 201, reset spring 302 winds on hammering pole 301, it is equipped with draw-in groove 3013 to go up baffle 3012 top, when hammering pole 301 is pressed downwards, hammering pole 301 can drive rubber hammering head 3011 and realize the hammering to the top of screw rod, and when loosening and pressing hammering pole 301, can make hammering pole 301 return under reset spring 302's effect.
The tightening mechanism 4 comprises a vertical transmission rod 401, clamping plates 4011, transverse bevel gears 4012, transmission gears 4013, a U-shaped frame 402, nut screwing cylinders 403, outer clamping edges 4031 and outer clamping teeth 4032, the left part of the sliding plate 201 is rotatably connected with the vertical transmission rod 401, the upper part and the lower part of the vertical transmission rod 401 are respectively connected with the clamping plates 4011, the sliding plate 201 is positioned between the two clamping plates 4011, the top ends of the vertical transmission rods 401 are provided with the transverse bevel gears 4012 through flat keys, the bottom end of the vertical transmission rod 401 is provided with the transmission gears 4013 through flat keys, the middle part of the inner bottom part of the frame body 1 is rotatably provided with the nut screwing cylinders 403, the outer clamping teeth 4032 are arranged on the outer sides of the nut screwing cylinders 403, the transmission gears 4013 are meshed with the outer clamping teeth 4032, the nut screwing cylinders are positioned right above the bottom holes 102, the middle parts of the nut screwing cylinders 403 are provided with hexagonal holes 4033, the inner diameters of the bottom holes 102 are larger than the inner diameters of the hexagonal holes 4033, so that nuts on the screws can fall into the hexagonal holes 4033 and the bottom holes 102, when the nut is screwed through the nut screwing barrel 403, the nut can rotate in the bottom hole 102, the vertical transmission rod 401 can be fixed on the sliding plate 201 through the clamping plate 4011, the vertical transmission rod 401 can move up and down along with the sliding plate 201, the stability of the vertical transmission rod 401 is improved through the U-shaped frame 402, the transmission gear 4013 at the bottom end of the vertical transmission rod 401 is meshed with the outer clamping teeth 4032 of the nut screwing barrel 403, the nut screwing barrel 403 is driven to rotate to screw the nut of the screw rod, the outer diameter of the transmission gear 4013 is 1/2 of the outer diameter of the circumference where the outer clamping teeth 4032 are located, and when the transmission gear 4013 rotates and drives the nut screwing barrel 403 to rotate through the outer clamping teeth 4032, the rotating speed of the nut screwing barrel 403 can be reduced.
The driving mechanism 5 comprises a driving device 501, a cam 502 and a vertical bevel gear 503, the driving device 501 is mounted on the right side of the top of the sliding plate 201 through a bolt, the cam 502 and the vertical bevel gear 503 are clamped on an output shaft of the driving device 501, the lower portion of the cam 502 is located in a clamping groove 3013, the vertical bevel gear 503 is meshed with a horizontal bevel gear 4012, the driving device 501 comprises a driving motor and a speed reducer, the driving mechanism 5 can drive the cam 502 to rotate in the clamping groove 3013 at the top end of the hammering rod 301 and can drive the vertical bevel gear 503 to rotate, and the horizontal bevel gear 4012 and the vertical transmission rod 401 can rotate.
The specific use mode and function of the embodiment are as follows:
in the invention, the sliding mechanism 2 is lifted upwards through the U-shaped adjusting rod 202, the frame body 1 is inserted to the outer side of the screw rod through the bottom hole 102, the rubber hammering head 3011 on the hammering mechanism 3 is erected at the top end of the screw rod, the driving mechanism 5 is started to drive the cam 502 to rotate in the clamping groove 3013 at the top end of the hammering rod 301, the hammering rod 301 is made to reciprocate up and down under the pressing action of the cam 502 and the elastic force action of the reset spring 302 to hammer the screw rod, at the moment, the driving mechanism 5 also drives the vertical bevel gear 503 to rotate, and the horizontal bevel gear 4012 and the vertical transmission rod 401 rotate, as the vertical transmission rod 401 penetrates through the upper end and the lower end of the sliding plate 201 and are connected with the clamping plate 4011, the sliding plate 201 slides downwards under the action of the balancing weight 2012 and synchronously drives the hammering mechanism 3 and the tightening mechanism 4 to move downwards, when the bottom plate 2022 at the bottom end of the U-shaped adjusting rod 202 is contacted with the bottom end of the frame body 1, the hammering mechanism 3 is completed, the reciprocating motion is continued and no hammering force is applied to the screw rod, the nut on the screw rod falls into the nut screwing barrel 403 at the moment, the transmission gear 4013 at the bottom end of the vertical transmission rod 401 is meshed with the outer clamping tooth 4032 of the nut screwing barrel 403 to drive the nut screwing barrel 403 to rotate so as to screw the nut of the screw rod, the operation of the driving motor is stopped after the screwing operation is completed, and the operation of installing the stair handrail screw rod in the other installation hole is needed only by repeating the operation.
The invention is not described in detail, but is well known to those skilled in the art.
The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (1)
1. The utility model provides a mounting device for stair railing set screw which characterized in that: comprises a hammering mechanism (3) and a screwing mechanism (4); the hammering mechanism (3) and the screwing mechanism (4) are respectively arranged on the inner side of the frame body (1) and are in transmission connection with the driving mechanism (5), the driving mechanism (5) is arranged on the sliding mechanism (2), the sliding mechanism (2) is arranged on a sliding rail (101) on the inner side of the frame body (1) in a sliding manner, and a bottom hole (102) is formed in the bottom side of the frame body (1); the sliding mechanism (2) comprises a sliding plate (201), balancing weights (2012) and a U-shaped adjusting rod (202), guide grooves (2011) are formed in two ends of the sliding plate (201) and are clamped on the sliding rail (101) in a sliding mode, two groups of balancing weights (2012) are fixed in the middle of the sliding plate (201), and the U-shaped adjusting rod (202) is inserted in the sliding plate (201); limiting plates (2021) are arranged at the upper end and the lower end of the U-shaped adjusting rod (202) penetrating out of the sliding plate (201), the top end of the U-shaped adjusting rod (202) penetrates out of the frame body (1), and the bottom end of the U-shaped adjusting rod (202) is further connected with a bottom plate (2022); the hammering mechanism (3) comprises a hammering rod (301), a rubber hammering head (3011), an upper baffle (3012) and a reset spring (302), the hammering rod (301) is inserted in the middle of the sliding plate (201) in a sliding mode, the bottom of the hammering rod (301) is connected with the rubber hammering head (3011), the upper end of the hammering rod (301) penetrates out of the sliding plate (201) upwards, the reset spring (302) is sleeved on the upper baffle (3012), and a clamping groove (3013) is formed in the top end of the hammering rod (301); the tightening mechanism (4) comprises a vertical transmission rod (401), a clamping plate (4011), a transverse bevel gear (4012), a transmission gear (4013), a U-shaped frame (402), a nut screwing cylinder (403), an outer clamping edge (4031) and outer clamping teeth (4032), the vertical transmission rod (401) is rotatably embedded at one end of the sliding plate (201), the vertical transmission rod (401) penetrates through the upper end and the lower end of the sliding plate (201) and is respectively connected with a clamping plate (4011), the top end of the vertical transmission rod (401) is connected with a transverse bevel gear (4012), and the transmission gear (4013) is clamped at the bottom end of the vertical transmission rod (401) and can be meshed and connected with the external clamp teeth (4032), the outer latch (4032) is arranged at the upper end of the outer side of the nut screwing barrel (403), the outer bottom of the nut screwing cylinder (403) is provided with an outer clamping edge (4031) and is rotatably embedded in the middle of the inner bottom end of the frame body (1); the outer diameter of the transmission gear (4013) is 1/2 of the outer diameter of the circumference where the outer latch (4032) is located; the nut screwing cylinder (403) is also arranged right above the bottom hole (102), a hexagonal hole (4033) is also arranged in the middle of the nut screwing cylinder (403), and the inner diameter of the bottom hole (102) is larger than that of the hexagonal hole (4033); the driving mechanism (5) comprises a driving device (501), a cam (502) and a vertical bevel gear (503), the cam (502) is clamped on a transmission shaft at the front end of the driving device (501), the bottom end of the cam (502) is inserted into a clamping groove (3013), the vertical bevel gear (503) is clamped at the front end of the transmission shaft, the vertical bevel gear (503) is meshed with a transverse bevel gear (4012) and connected with the transverse bevel gear, and the driving device (501) comprises a driving motor and a speed reducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010438703.8A CN111576893B (en) | 2020-05-22 | 2020-05-22 | Mounting device for stair railing fixing screw rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010438703.8A CN111576893B (en) | 2020-05-22 | 2020-05-22 | Mounting device for stair railing fixing screw rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111576893A CN111576893A (en) | 2020-08-25 |
| CN111576893B true CN111576893B (en) | 2022-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010438703.8A Active CN111576893B (en) | 2020-05-22 | 2020-05-22 | Mounting device for stair railing fixing screw rod |
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| CN (1) | CN111576893B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115178988B (en) * | 2021-04-06 | 2023-09-26 | 中国航发商用航空发动机有限责任公司 | Guiding device and mounting method of engine stator |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206084347U (en) * | 2016-09-20 | 2017-04-12 | 福建天广消防有限公司 | Automatic attaching together soon of bolt and nut is put |
| CN106826203B (en) * | 2017-01-03 | 2018-12-11 | 东莞理工学院 | A kind of fully automatic bolt squeezes into mechanism |
| CN208662995U (en) * | 2018-07-27 | 2019-03-29 | 丽水市智汇佳科技有限公司 | Bearing assembling device is used in a kind of automated production processing |
| CN209868491U (en) * | 2019-04-10 | 2019-12-31 | 周静 | Tool assembly for quickly mounting expansion bolt |
| CN210549397U (en) * | 2019-06-13 | 2020-05-19 | 东莞奥佰诺自动化科技有限公司 | Full-automatic screw pressing equipment |
| CN210499165U (en) * | 2019-08-30 | 2020-05-12 | 厦门珊福股份有限公司 | Device convenient for screwing screw |
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2020
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| CN111576893A (en) | 2020-08-25 |
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Effective date of registration: 20221222 Address after: Floor 6, Longmei Building, No. 138, Tunken West Road, Tamushya Community, Gulebag Street, Hotan City, Hotan Prefecture, Xinjiang Uygur Autonomous Region, 848099 Patentee after: Xinjiang Guangtai Construction Engineering Co.,Ltd. Patentee after: Wu Zhongjun Address before: Room 608, 3 Baozhu Road, Conghua Mingzhu Industrial Park, Guangzhou, Guangdong 510931 Patentee before: Ren Jiale |