CN208895535U - A kind of assembly automatic assembly line bolt tightens unit - Google Patents
A kind of assembly automatic assembly line bolt tightens unit Download PDFInfo
- Publication number
- CN208895535U CN208895535U CN201821441175.6U CN201821441175U CN208895535U CN 208895535 U CN208895535 U CN 208895535U CN 201821441175 U CN201821441175 U CN 201821441175U CN 208895535 U CN208895535 U CN 208895535U
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Abstract
The utility model discloses a kind of assembly automatic assembly line bolts to tighten unit, including automatic delivery line and bolt tightening operation robot, it is fixedly installed with automatic pose positioning device in bolt tightening operation robot, is placed with build-up member tooling combination on automatic delivery line.The problem of a kind of assembly automatic assembly line bolt of the utility model tightens unit, solves bolt existing in the prior art and tightens build-up member transmitting function in unit, pose positioning function and tighten bolt function by being accomplished manually, time-consuming, low efficiency.
Description
Technical field
The utility model belongs to bolt on assembling line and tightens unit technical field, and it is automatic raw to be related to a kind of assembly
Producing line bolt tightens unit.
Background technique
Mechanical part assembling line is generally by transmission line, load units, artificial unit, component assembling unit, connection spiral shell
Bolt tightens the multistages unit such as unit, detection unit and unloading unit composition.Transmission line runs through entire production line for automatically assembling, and every
Segment unit co-ordination.The front end state that coupling bolt tightens unit is: coupling bolt has been placed in the threaded hole of build-up member
Interior but not yet lemon is tight, build-up member has been loaded on transmission line.It includes transmission line, pose positioning dress that coupling bolt, which tightens unit,
It sets and 3 part of bolt tightening operation robot: (1) transmission line, for each Work robot between each segment unit and inside unit
Between build-up member transmission, (2) pose positioning device, for guaranteeing the box spanner and dress of bolt tightening operation robot
With, wait tighten the accurate positionin between bolt, (3) bolt tightening operation robot can have more, be respectively used on component
Complete different distributions position, the bolt of different size is tightened.
If coupling bolt tightens build-up member transmitting function in unit, pose positioning function and tightens bolt function by artificial
It completes, time-consuming, low efficiency；Being also possible to can be because of the coupling bolt and bolt tightening operation robot sleeve spanner of build-up member
Position alignment deviation it is excessive and mechanism is caused to damage.Therefore has and automatically deliver, the positioning of automatic pose, automatic tightening bolt function
Can coupling bolt tighten unit automation equipment and technology be component assembling operation developing direction.
Utility model content
The purpose of the utility model is to provide a kind of assembly automatic assembly line bolts to tighten unit, solves existing skill
Bolt present in art tightens build-up member transmitting function in unit, pose positioning function and tightens bolt function by artificial complete
The problem of at, time-consuming, low efficiency.
The utility model the technical scheme adopted is that a kind of assembly automatic assembly line bolt tightens unit, including
Automatic delivery line and bolt tightening operation robot are fixedly installed with automatic pose positioning dress in bolt tightening operation robot
It sets, build-up member tooling combination is placed on automatic delivery line.
The utility model is further characterized in that,
Automatic delivery line includes bracket, and corresponding two sides are respectively equipped with a universal ball table on support level face, and two
The side of universal ball table away from one another is mounted on column Fluency strip, puts jointly on two universal ball tables, between two column Fluency strips
It is equipped with a build-up member tooling combination, build-up member tooling combination slides on two universal ball tables, between two column Fluency strips,
Chain kit is also equipped on bracket, chain kit is mounted on the lower section of universal ball table, the transmission chain of chain kit
Transmission direction is consistent with the glide direction of build-up member tooling combination, is further fixed on pushing block on the transmission chain of chain kit, pushes away
Block pushes build-up member tooling combination to slide on two universal ball tables, between two column Fluency strips.
Bolt tightening operation robot includes organic frame and workbench, and linear moving apparatus B is fixed in rack, and straight line moves
Dynamic device B be located above automatic delivery line and the moving direction of the Mobile Slide of linear moving apparatus B for downwardly or to
Upper separate automatic delivery line, the Mobile Slide end of linear moving apparatus B is also equipped with rotating machine arm, the end of rotating machine arm
End is equipped with box spanner, and workbench is located at below automatic delivery line, and worktable upper surface is further fixed on elastic universal ball table, bullet
Property universal ball table table top and universal ball table table top in same level, the table top two sides of elastic universal ball table and two columns
The corresponding position of Fluency strip is also equipped with column Fluency strip and divides with two column Fluency strips of the table top two sides of elastic universal ball table
It Dui Jie not become whole, the Mobile Slide end of linear moving apparatus B is also equipped with ultrasonic displacement sensor C, ultrasonic wave position
The gauge head of displacement sensor C is parallel with the moving direction of linear moving apparatus B Mobile Slide.
Automatic pose positioning device includes the linear moving apparatus for being mounted on rack side and being located above automatic delivery line
A, the moving direction of the Mobile Slide of linear moving apparatus A are downwardly or to be upwardly away from automatic delivery line, are moved linearly
The end of the Mobile Slide of device A is further fixed on frame, and frame is set as " recessed " shape, and the bottom portion of groove of frame is towards build-up member
Tooling combination, frame groove bottom are equipped with electromagnet, and the working face of electromagnet and the direction of motion of automatic delivery line are vertical, frame
The corresponding position in the two sidewalls of frame groove is mounted on elastic multi-directional ball, and non-contact displacement sensor A is also equipped on frame, non-
The gauge head installation direction of contact displacement sensors A is parallel with the glide direction of build-up member tooling combination.
Build-up member tooling combination include build-up member and retinue tooling, retinue tooling include sliding be placed on two it is universal
Retinue tool base plate on billiard table, between two column Fluency strips, retinue tool base plate upper surface are equipped with build-up member, department of assembly
There is a threaded hole in part upper surface, and the threaded hole interpolation of build-up member needs to be tightened bolt, build-up member towards frame one side also
Retinue tool locating convex block is installed.
Retinue tool locating convex block is the face c close to the one side of frame, and the face c is matched with electromagnet, and retinue tool locating is convex
The side of block is respectively the face a and the face b, the face a and face b is parallel and the width L between it3With two bullets of automatic pose positioning device
Distance L between property multi-directional ball4It is corresponding, and width L3The distance between when greater than two elastic multi-directional balls are stretched out, less than two
The distance between when elastic multi-directional ball is fully retracted, the face d and the face d and the face a, the face b are denoted as at the top of tool locating convex block of accompanying
It is vertical with the face c.
The beneficial effects of the utility model are: a kind of assembly automatic assembly line bolt of the utility model is tightened unit and is set
It is standby, have the function of automatically delivering, the positioning of automatic pose, automatic tightening bolt, saves manpower, high-efficient, be suitble to automatic makeup
With being used on production line, have a wide range of application, is used for the automatic assembling of various bolted build-up members, and application method
Simply.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that a kind of assembly automatic assembly line bolt of the utility model tightens unit；
Fig. 2 is the structure group that a kind of assembly automatic assembly line bolt of the utility model tightens automatic delivery line in unit
At schematic diagram；
Fig. 3 is that a kind of assembly automatic assembly line bolt of the utility model tightens bolt tightening operation robot in unit
Structure composition schematic diagram；
Fig. 4 is that a kind of assembly automatic assembly line bolt of the utility model tightens automatic pose positioning device in unit
Structure composition schematic diagram；
Fig. 5 is that a kind of assembly automatic assembly line bolt of the utility model tightens build-up member tooling combination in unit
Structural schematic diagram；
Fig. 6 is the A direction view of Fig. 5.
In figure, 1. automatic delivery lines, 2. automatic pose positioning devices, 3. bolt tightening operation robots, 4. build-up members
Tooling combination；
1-1. bracket, 1-2. universal ball table, 1-3. column Fluency strip, 1-4. chain kit, 1-5. pushing block；
2-1. linear moving apparatus A, 2-2. non-contact displacement sensor A, 2-3. electromagnet, 2-4. elasticity multi-directional ball, 2-
5. frame；
3-1. rack, 3-2. linear moving apparatus B, 3-3. rotating machine arm, 3-4. box spanner, 3-5. elasticity multi-directional ball
Platform, 3-6. workbench, 3-7. ultrasonic displacement sensor C；
4-1. build-up member, 4-2. bolt to be tightened, 4-3. retinue tool base plate, 4-4. retinue tool locating convex block.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawings and detailed description.
A kind of assembly automatic assembly line bolt of the utility model tightens unit, as shown in Figure 1, including automatic delivery line
1 and bolt tightening operation robot 3, automatic pose positioning device 2 is fixedly installed in bolt tightening operation robot 3, such as
Shown in Fig. 2, build-up member tooling combination 4 is placed on automatic delivery line 1.
Automatic delivery line 1 includes bracket 1-1, and corresponding two sides are respectively equipped with a multi-directional ball on bracket 1-1 horizontal plane
The side of platform 1-2, two universal ball table 1-2 away from one another is mounted on column Fluency strip 1-3, on two universal ball table 1-2, two
A build-up member tooling combination 4 is placed between column Fluency strip 1-3 jointly, build-up member tooling combination 4 is in two universal ball tables
1-2 is upper, slides between two column Fluency strip 1-3, and glide direction is exactly the X-direction marked in Fig. 1 and Fig. 2, is also pacified on bracket 1-1
Equipped with chain kit 1-4, chain kit 1-4 is mounted on the lower section of universal ball table 1-2, the transmission chain of chain kit 1-4
Transmission direction it is consistent with the glide direction of build-up member tooling combination 4, be further fixed on and push away on the transmission chain of chain kit 1-4
Block 1-5, pushing block 1-5 push build-up member tooling combination 4 on two universal ball table 1-2, are sliding between two column Fluency strip 1-3
It is dynamic.
As shown in figure 3, bolt tightening operation robot 3 includes organic frame 3-1 and workbench 3-6, it is fixed on rack 3-1
Linear moving apparatus B3-2, linear moving apparatus B3-2 are located at 1 top of automatic delivery line and the movement of linear moving apparatus B3-2
The moving direction of slide unit be toward and away from automatic delivery line 1 direction, that is, be exactly the Z-direction marked in Fig. 3 forward direction and
Reversely, the Mobile Slide end of linear moving apparatus B3-2 is also equipped with rotating machine arm 3-3, the end of rotating machine arm 3-3
Box spanner 3-4 is installed, workbench 3-6 is located at 1 lower section of automatic delivery line, and the upper surface workbench 3-6 is further fixed on elasticity ten thousand
To billiard table 3-5, the table top of elastic universal ball table 3-5 and the table top of universal ball table 1-2 are in same level, elastic universal ball table
The table top two sides of 3-5 position corresponding with two column Fluency strip 1-3 is also equipped with column Fluency strip, elastic universal ball table 3-5's
The column Fluency strip of table top two sides docks respectively with two column Fluency strip 1-3 becomes whole, the mobile cunning of linear moving apparatus B3-2
Platform end is also equipped with ultrasonic displacement sensor C3-7, the gauge head and linear moving apparatus of ultrasonic displacement sensor C3-7
The moving direction of the Mobile Slide of B3-2 is parallel.
As shown in figure 4, automatic pose positioning device 2 includes the side installation frame 3-1 and is located above automatic delivery line
Linear moving apparatus A2-1, the moving direction of the Mobile Slide of linear moving apparatus A2-1 are toward and away from automatic delivery line
1 direction, that is, be exactly the forward and reverse of the Z-direction marked in Fig. 4, the Mobile Slide with linear moving apparatus B3-2 in Fig. 3
Moving direction it is identical, the end of the Mobile Slide of linear moving apparatus A2-1 is further fixed on frame 2-5, and frame 2-5 is set as
" recessed " shape, for the bottom portion of groove of frame 2-5 towards build-up member tooling combination 4, frame 2-5 bottom portion of groove is equipped with electromagnet 2-3,
The working face of electromagnet 2-3 and the direction of motion of automatic delivery line are vertical, and the corresponding position in two sidewalls of frame 2-5 groove is pacified
Equipped with elastic multi-directional ball 2-4, non-contact displacement sensor A2-2, non-contact displacement sensor A2-2 are also equipped on frame 2-5
Gauge head direction it is parallel with the glide direction of build-up member tooling combination 4.
As shown in Fig. 5-Fig. 6, build-up member tooling combination 4 includes build-up member 4-1 and retinue tooling, and retinue tooling includes
Slide retinue tool base plate 4-3, pushing block the 1-5 promotion being placed on two universal ball table 1-2, between two column Fluency strip 1-3
Retinue tool base plate 4-3 is slided on two universal ball table 1-2, between two column Fluency strip 1-3, is accompanied on tool base plate 4-3
Surface is equipped with build-up member 4-1, and there is threaded hole in the upper surface build-up member 4-1, and the threaded hole interpolation of build-up member 4-1 needs to be twisted
Tight bolt 4-2, the one side of build-up member 4-1 towards frame 2-5 are also equipped with retinue tool locating convex block 4-4, due to retinue
Tool base plate 4-3 is placed in two universal ball table 1-2 planes, between two column Fluency strip 1-3, and therefore, accompany tool base plate 4-3
Width L1It should be with the distance between two column Fluency strip 1-3 L2It is corresponding, and L2Slightly larger than L1, build-up member tooling combination 4
Weight born by universal ball table 1-2, build-up member tooling combination 4 is on universal ball table 1-2, between two column Fluency strip 1-3
Sliding, due to the width L for the tool base plate 4-3 that accompanies1The distance between two column Fluency strip 1-3 L2It is corresponding, so in movement
The bottom plate of build-up member tooling combination can be moved freely between two column Fluency strip 1-3, and two column Fluency strips are X-directions
Mobile guiding.
Retinue tool locating convex block 4-4 is the face c close to the one side of frame 2-5, and the face c is matched with electromagnet 2-3, work of accompanying
The side of dress locating convex block 4-4 is respectively the face a and the face b, the face a and face b is parallel and the width L between it3It is positioned with automatic pose
Distance L between the elastic multi-directional ball 2-4 of two of device 24It is corresponding, and width L3When greater than two elasticity multi-directional ball 2-4 stretch out
The distance between, the distance between when less than two elasticity multi-directional ball 2-4 are fully retracted, retinue tool locating convex block 4-4's
Top is denoted as the face d and the face d is vertical with the face a, the face b and the face c.
Mechanical, fluid pressure type or pneumatic type can be used in the linear moving apparatus A2-1 of the utility model.
The rack 3-1 of the utility model bolt tightening operation robot 3, refers to no motion of part, can be used four-column type or
Single arm type, if four-column type then rack include top beam, 4 it is vertical lean on and pedestal, if single arm type, then rack includes curved boom and pedestal.
A kind of assembly automatic assembly line bolt of the utility model tightens unit when in use, specifically according to following step
It is rapid to implement:
Step 1, according to preset linear moving apparatus A trip order, the linear moving apparatus of automatic pose positioning device 2
A2-1 is moved downward to the retinue tool locating convex block 4- that non-contact displacement sensor A2-2 perceives build-up member tooling combination 4
Stop movement after 4 face c position height information；
Step 2, build-up member tooling combination 4 is pushed to by automatic delivery line 1 using chain kit 1-4 and pushing block 1-5
On the elastic universal ball table 3-5 of bolt tightening operation robot 3, according to the non-contact displacement sensing of automatic pose positioning device 2
Device A2-2 perceives the face the c position presupposed information of the retinue tool locating convex block 4-4 of build-up member tooling combination 4, default when reaching
When position, chain kit 1-4 stopping movement, pushing block 1-5 stops push build-up member tooling combination 4, and electromagnet 2-3 is powered will
The face c of retinue tool locating convex block 4-4 is attracted, while the face a of tool locating convex block 4-4 of accompanying, the face b squeeze into automatic pose and determine
Between the elastic multi-directional ball 2-4 of two of position device 2, elasticity ten thousand of the build-up member tooling combination 4 in bolt tightening operation robot 3
Automatic pose positioning is realized on billiard table 3-5, the box spanner 3-4 of bolt tightening operation robot 3 is automatically aligned to spiral shell to be tightened
Bolt 4-2；
Step 3, the linear moving apparatus B3-2 of bolt tightening operation robot 3 is moved down, and presses its box spanner 3-4
Tightly on bolt 4-2 to be tightened, the face the d position of retinue tool locating convex block 4-4 is then perceived according to ultrasonic displacement sensor C3-7
Presupposed information is set, when reaching predeterminated position, electromagnet 2-3 power-off is decontroled, while the Mobile Slide of linear moving apparatus A2-1
It is moved upward to original position；
Step 4, the rotating machine arm 3-3 rotation drive sleeve spanner 3-4 rotation of bolt tightening operation robot 3, will be to
It tightens bolt 4-2 to tighten, when the driving torque of rotating machine arm 3-3 reaches preset torque value, rotating machine arm 3-3 stops turning
Dynamic, the linear moving apparatus B3-2 for the Work robot 3 that bolt is tightened is moved up, and is returned in situ.
The utility model when have on build-up member 4-1 different distributions position, different size when tightening bolt 4-2, then
More bolt tightening operation robots 3 of corresponding setting, automatic delivery line 1 carry out each operation using chain conveyer 1-4 and pushing block 1-5
The transmission of build-up member tooling combination between robot, automatic delivery line 1 are made according in more bolt tightening operation robots 3
The industry time, longest beat was controlled.
Claims (6)
1. a kind of assembly automatic assembly line bolt tightens unit, which is characterized in that including automatic delivery line (1) and bolt
Tightening operation robot (3) is fixedly installed with automatic pose positioning device (2), institute in bolt tightening operation robot (3)
It states and is placed with build-up member tooling combination (4) on automatic delivery line (1).
2. a kind of assembly automatic assembly line bolt according to claim 1 tightens unit, which is characterized in that it is described from
Dynamic transmission line (1) includes bracket (1-1), and corresponding two sides are respectively equipped with a multi-directional ball on bracket (1-1) horizontal plane
Platform (1-2), the side of two universal ball tables (1-2) away from one another are mounted on column Fluency strip (1-3), and two described universal
It is placed with jointly build-up member tooling combination (4) on billiard table (1-2), between two column Fluency strips (1-3), the build-up member work
Dress combination (4) is slided on two universal ball tables (1-2), between two column Fluency strips (1-3), on the bracket (1-1)
It is also equipped with chain kit (1-4), the chain kit (1-4) is mounted on the lower section of the universal ball table (1-2), described
The transmission direction of the transmission chain of chain kit (1-4) is consistent with the glide direction of build-up member tooling combination (4), and the chain passes
It is further fixed on pushing block (1-5) on the transmission chain of dynamic component (1-4), the pushing block (1-5) pushes build-up member tooling combination (4) to exist
It is slided on two universal ball tables (1-2), between two column Fluency strips (1-3).
3. a kind of assembly automatic assembly line bolt according to claim 2 tightens unit, which is characterized in that the spiral shell
Bolt tightening operation robot (3) includes organic frame (3-1) and workbench (3-6), is fixed with linear movement on the rack (3-1)
Device B (3-2), the linear moving apparatus B (3-2) is located above the automatic delivery line (1) and the linear moving apparatus B
The moving direction of the Mobile Slide of (3-2) is downwardly or to be upwardly away from automatic delivery line (1), the linear moving apparatus
The Mobile Slide end of B (3-2) is also equipped with rotating machine arm (3-3), and the end of the rotating machine arm (3-3) is equipped with set
Barrel spanner (3-4), the workbench (3-6) are located at below the automatic delivery line (1), and workbench (3-6) upper surface is also
Fixed flexible universal ball table (3-5), the table top of the elasticity universal ball table (3-5) and the table top of the universal ball table (1-2)
In same level, the table top two sides of the elasticity universal ball table (3-5) are corresponding with two column Fluency strip (1-3)
Position is also equipped with column Fluency strip and the column Fluency strip (1-3) of table top two sides two with the elastic universal ball table (3-5)
Docking becomes whole respectively, and the Mobile Slide end of the linear moving apparatus B (3-2) is also equipped with ultrasonic displacement sensor
The mobile side of the Mobile Slide of C (3-7), the gauge head of ultrasonic displacement sensor C (3-7) and the linear moving apparatus B (3-2)
To parallel.
4. a kind of assembly automatic assembly line bolt according to claim 3 tightens unit, which is characterized in that it is described from
Dynamic pose positioning device (2) include the linear movement for being mounted on the rack side (3-1) and being located above automatic delivery line (1)
Device A (2-1), the moving direction of the Mobile Slide of the linear moving apparatus A (2-1) are downwardly or to be upwardly away from certainly
The direction of dynamic transmission line (1), the end of the Mobile Slide of the linear moving apparatus A (2-1) is further fixed on frame (2-5), institute
It states frame (2-5) and is set as " recessed " shape, the bottom portion of groove of the frame (2-5) is towards build-up member tooling combination (4), the frame
Frame (2-5) bottom portion of groove is equipped with electromagnet (2-3), the working face of the electromagnet (2-3) and the movement side of automatic delivery line
To vertical, the corresponding position in two sidewalls of frame (2-5) groove is mounted on elastic multi-directional ball (2-4), the frame (2-
5) be also equipped on non-contact displacement sensor A (2-2), the gauge head installation direction of the non-contact displacement sensor A (2-2) with
The glide direction of build-up member tooling combination (4) is parallel.
5. unit is tightened according to a kind of claim assembly automatic assembly line bolt according to claim 4, it is special
Sign is, the build-up member tooling combination (4) include sliding be placed on two universal ball tables (1-2), two column streams
Retinue tool base plate (4-3) between sharp item (1-3), retinue tool base plate (4-3) upper surface are equipped with build-up member (4-
1), the build-up member upper surface (4-1) has threaded hole, and the threaded hole interpolation of the build-up member (4-1) needs to be tightened spiral shell
Bolt (4-2), the one side of build-up member (4-1) towards the frame (2-5) are also equipped with retinue tool locating convex block (4-
4)。
6. a kind of assembly automatic assembly line bolt according to claim 5 tightens unit, which is characterized in that it is described with
Row tool locating convex block (4-4) is the face c close to the one side of the frame (2-5), and the face c is matched with the electromagnet (2-3), institute
The side for stating retinue tool locating convex block (4-4) is respectively the face a and the face b, the face a and face b is parallel and the width L between it3With oneself
Distance L between the elastic multi-directional ball (2-4) of two of dynamic pose positioning device (2)4It is corresponding, and width L3Greater than two elasticity ten thousand
The distance between when being stretched out to ball (2-4), the distance between when less than two elastic multi-directional balls (2-4) are fully retracted, institute
It states and is denoted as the face d and the face d is vertical with the face a, the face b and the face c at the top of retinue tool locating convex block (4-4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821441175.6U CN208895535U (en) | 2018-09-04 | 2018-09-04 | A kind of assembly automatic assembly line bolt tightens unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821441175.6U CN208895535U (en) | 2018-09-04 | 2018-09-04 | A kind of assembly automatic assembly line bolt tightens unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208895535U true CN208895535U (en) | 2019-05-24 |
Family
ID=66571335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821441175.6U Expired - Fee Related CN208895535U (en) | 2018-09-04 | 2018-09-04 | A kind of assembly automatic assembly line bolt tightens unit |
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| Country | Link |
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| CN (1) | CN208895535U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110181536A (en) * | 2019-06-28 | 2019-08-30 | 华中科技大学无锡研究院 | System for high-speed rail Location vehicle |
| CN111376039A (en) * | 2020-04-09 | 2020-07-07 | 云南电网有限责任公司电力科学研究院 | Bolt fastening device for vibration damper |
| CN113501316A (en) * | 2021-07-17 | 2021-10-15 | 中国铁建电气化局集团有限公司 | Anchor bolt automatic feeding and side wall code spraying equipment |
-
2018
- 2018-09-04 CN CN201821441175.6U patent/CN208895535U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110181536A (en) * | 2019-06-28 | 2019-08-30 | 华中科技大学无锡研究院 | System for high-speed rail Location vehicle |
| CN111376039A (en) * | 2020-04-09 | 2020-07-07 | 云南电网有限责任公司电力科学研究院 | Bolt fastening device for vibration damper |
| CN111376039B (en) * | 2020-04-09 | 2021-10-08 | 云南电网有限责任公司电力科学研究院 | Bolt fastening device for vibration damper |
| CN113501316A (en) * | 2021-07-17 | 2021-10-15 | 中国铁建电气化局集团有限公司 | Anchor bolt automatic feeding and side wall code spraying equipment |
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| CF01 | Termination of patent right due to non-payment of annual fee |