CN107900662A - Flywheel automatic screwing device - Google Patents
Flywheel automatic screwing device Download PDFInfo
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- CN107900662A CN107900662A CN201711180880.5A CN201711180880A CN107900662A CN 107900662 A CN107900662 A CN 107900662A CN 201711180880 A CN201711180880 A CN 201711180880A CN 107900662 A CN107900662 A CN 107900662A
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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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- 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
- B23P19/001—Article feeders for assembling machines
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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Abstract
Description
技术领域technical field
本发明属于拧紧机技术领域，尤其是涉及一种飞轮自动拧紧机。The invention belongs to the technical field of screwing machines, in particular to a flywheel automatic screwing machine.
背景技术Background technique
随着汽车行业的发展，汽车发动机的飞轮安装螺栓拧紧要求越来越高，以往发动机的飞轮的安装螺栓大部分是人工完成，过程质量不易控制，效率低，人工成本越来越高，为了适应这种情况，提高生产效率，降低企业生产成本，企业需要一种能实现高效率，低成本的自动化拧紧装置。而现有的飞轮螺栓拧紧设备，相对效率低、安装精度低，且无法兼容不同规格型号螺栓的安装，需要用不同的设备来完成不同飞轮螺栓的安装，生产成本偏高。With the development of the automobile industry, the requirements for tightening the flywheel mounting bolts of automobile engines are getting higher and higher. In the past, most of the flywheel mounting bolts of the engine were done manually. The process quality is not easy to control, the efficiency is low, and the labor cost is getting higher and higher. In this case, to improve production efficiency and reduce production costs of enterprises, enterprises need an automatic tightening device that can achieve high efficiency and low cost. However, the existing flywheel bolt tightening equipment has relatively low efficiency and low installation accuracy, and is not compatible with the installation of bolts of different specifications and models. Different equipment is required to complete the installation of different flywheel bolts, and the production cost is relatively high.
发明内容Contents of the invention
本发明的目的是要解决现有技术的不足之处，而提供一种可实现快速、准确地对螺帽进行拧紧的飞轮自动拧紧机。The purpose of the present invention is to solve the deficiencies of the prior art, and provide a flywheel automatic tightening machine that can realize fast and accurate tightening of nuts.
本发明的目的是通过下列技术方案解决的：The purpose of the present invention is solved through the following technical solutions:
一种飞轮自动拧紧机，其特征在于：包括有竖直设置的机架，机架上设有升降机构，升降机构上设有拧紧机构；An automatic flywheel tightening machine is characterized in that: it includes a vertically arranged frame, the frame is provided with a lifting mechanism, and the lifting mechanism is provided with a tightening mechanism;
所述升降机构包括竖直设置在机架前侧的直线导轨，直线导轨上滑移连接有升降架，直线导轨顶部设有限位块；所述机架中部设有角件，角件上设有横向设置的气缸安装座，气缸安装座上设有气缸杆头朝上设置的升降气缸，升降气缸杆头上设有Y接头，升降架后侧面设有气缸推座，所述Y接头和气缸推座连接；还包括有连接气缸升降座和升降架的拖链；The lifting mechanism includes a linear guide rail vertically arranged on the front side of the frame, a lifting frame is slidably connected to the linear guide rail, and a limit block is arranged on the top of the linear guide rail; corner fittings are arranged in the middle of the frame, and corner fittings are provided on the corner fittings. Horizontally arranged cylinder mounting seat, the cylinder mounting seat is provided with a lifting cylinder with the head of the cylinder facing upwards, the rod head of the lifting cylinder is provided with a Y joint, and the rear side of the lifting frame is provided with a cylinder push seat, and the Y joint and the cylinder push Seat connection; also includes a drag chain connecting the cylinder lifting seat and the lifting frame;
所述升降架包括和直线导轨上下滑移连接的后板，设置在后板底部的底板和设置在后板顶部的顶板；The lifting frame includes a back plate sliding up and down connected with the linear guide rail, a bottom plate arranged at the bottom of the back plate and a top plate arranged at the top of the back plate;
所述拧紧机构设置在升降架上，拧紧机构包括有固定在后板上伺服电机安装座，伺服电机安装座上设有输出轴朝下设置的伺服电机，伺服电机输出轴上设有联轴器，底板底部设有拧紧机械手，拧紧机械手顶部穿过底板与联轴器连接；The tightening mechanism is arranged on the lifting frame, and the tightening mechanism includes a servo motor mounting seat fixed on the rear plate. The servo motor mounting seat is provided with a servo motor with the output shaft facing downwards, and a coupling is provided on the output shaft of the servo motor. , there is a tightening manipulator at the bottom of the base plate, and the top of the tightening manipulator passes through the base plate and connects with the coupling;
所述拧紧机械手包括第一旋转轴、法兰盘、轴承、转轴隔圈、第二旋转轴、第二旋转轴弹簧、第三旋转轴、套筒、直线轴承、导杆、导杆盖板、弹簧垫片、导杆弹簧、卡爪支架、卡爪连接板和卡爪。The tightening manipulator includes a first rotating shaft, a flange, a bearing, a rotating shaft spacer, a second rotating shaft, a second rotating shaft spring, a third rotating shaft, a sleeve, a linear bearing, a guide rod, a guide rod cover plate, Spring spacers, guide springs, jaw brackets, jaw connecting plates and jaws.
优选的，本发明所述机架包括调节底板、型材底板、两根型材立板、型材顶盖板、型材固定板；所述调节底板水平设置，型材底板设置在调节底板顶部，两根型材立板分别垂直设置在调节底板左右两侧，型材立板通过型材固定板与型材底板固定连接，型材顶盖板水平设置在型材立板顶部，两根型材立板的顶部分别和型材顶盖板底面左右两侧固定连接。Preferably, the frame of the present invention includes an adjustment base plate, a profile base plate, two profile vertical plates, a profile top cover plate, and a profile fixing plate; The plates are vertically arranged on the left and right sides of the adjusting bottom plate, the profile vertical plate is fixedly connected with the profile bottom plate through the profile fixing plate, the profile top cover plate is horizontally set on the top of the profile vertical plate, and the tops of the two profile vertical plates are respectively connected with the bottom surface of the profile top cover plate The left and right sides are fixedly connected.
进一步的，本发明所述轴承固定在底板上，第一旋转轴延竖直方向设置且与轴承相配合，第一旋转轴顶部穿过轴承且与联轴器连接，所述法兰盘套设在第一旋转轴外且固定在底板底部，第一旋转轴和法兰盘之间设有转轴隔圈；Further, the bearing described in the present invention is fixed on the bottom plate, the first rotating shaft is arranged along the vertical direction and matched with the bearing, the top of the first rotating shaft passes through the bearing and is connected with the shaft coupling, and the flange is sleeved Outside the first rotating shaft and fixed on the bottom of the bottom plate, a rotating shaft spacer is arranged between the first rotating shaft and the flange;
第一旋转轴底部固定有第二旋转轴，第二旋转轴为空心轴，第二旋转轴内设有第二旋转轴弹簧，第二旋转轴内底部设有第三旋转轴，第三旋转轴处于第二旋转轴弹簧下方，第三旋转轴底部设有套筒；The bottom of the first rotating shaft is fixed with a second rotating shaft, the second rotating shaft is a hollow shaft, the second rotating shaft is provided with a second rotating shaft spring, the inner bottom of the second rotating shaft is provided with a third rotating shaft, and the third rotating shaft Located under the spring of the second rotating shaft, a sleeve is provided at the bottom of the third rotating shaft;
第二旋转轴外侧底部设有卡爪支架，卡爪支架上铰接有卡爪，卡爪顶部与卡爪连接板底部铰接，卡爪连接板顶部与法兰盘外侧底部铰接；所述底板上还设有直线轴承，所述导杆延竖直方向设置，导杆上端与直线轴承相配合，导杆顶部设有导杆盖板，导杆底部与卡爪支架上侧面固定连接，导杆下端套设有导杆弹簧，导杆弹簧与直线轴承之间设有弹簧垫片。The bottom of the outer side of the second rotating shaft is provided with a claw bracket, the claw bracket is hinged with claws, the top of the claw is hinged with the bottom of the claw connecting plate, and the top of the claw connecting plate is hinged with the outer bottom of the flange; There is a linear bearing, the guide rod is set along the vertical direction, the upper end of the guide rod is matched with the linear bearing, the guide rod cover plate is provided on the top of the guide rod, the bottom of the guide rod is fixedly connected with the upper side of the claw bracket, and the lower end of the guide rod is sleeved A guide rod spring is provided, and a spring washer is arranged between the guide rod spring and the linear bearing.
优选的，本发明所述卡爪的个数为3个以上；所述卡爪连接板的个数与卡爪的个数相等。Preferably, the number of claws in the present invention is more than 3; the number of connecting plates of the claws is equal to the number of claws.
优选的，本发明所述导杆的个数为3个以上；所述直线轴承的个数、导杆盖板的个数、导杆弹簧的个数、弹簧垫片的个数均与导杆的个数相等。Preferably, the number of guide rods in the present invention is more than 3; the number of the linear bearings, the number of guide rod cover plates, the number of guide rod springs, and the number of spring washers are all the same as those of the guide rod are equal in number.
优选的，本发明所述轴承中心轴线、第一旋转轴中心轴线、法兰盘中心轴线、第二旋转轴中心轴线、第三旋转轴中心轴线和套筒中心轴线均相重合。Preferably, the central axis of the bearing, the central axis of the first rotating shaft, the central axis of the flange, the central axis of the second rotating shaft, the central axis of the third rotating shaft and the central axis of the sleeve in the present invention are all coincident.
优选的，本发明所述机架前设有物料输送线。Preferably, a material conveying line is provided in front of the frame of the present invention.
和现有技术相比本发明具有以下特点和有益效果：Compared with the prior art, the present invention has the following characteristics and beneficial effects:
1、在工作过程中，在飞轮上需要拧入螺帽的位置放入螺帽，放入螺帽的飞轮随着物料输送线运送到拧紧机械手正下方，定位完成后，升降架带着拧紧机械手随着直线导轨下降，套筒将与螺帽对准，升降架继续下降，第二旋转轴弹簧慢被压缩，卡爪将抓住飞轮。 此时，伺服电机启动带动拧紧机械手慢慢转动，当套筒与螺帽卡准后，伺服电机带动拧紧机械手快速转动，将螺帽快速拧入到位，大大提高了螺帽拧紧速度，提高安装效率和精度，同时降低了工人的劳动强度。1. During the working process, put the nut on the position where the nut needs to be screwed into the flywheel, and the flywheel put in the nut will be transported to the bottom of the tightening manipulator along with the material conveying line. After the positioning is completed, the lifting frame will carry the tightening manipulator As the linear rail descends, the sleeve will align with the nut, the crane continues to descend, the second rotary axis spring is slowly compressed, and the claws will grab the flywheel. At this time, the servo motor starts to drive the tightening manipulator to rotate slowly. When the sleeve and the nut are aligned, the servo motor drives the tightening manipulator to rotate quickly, and the nut is quickly screwed into place, which greatly improves the nut tightening speed and improves installation efficiency. and precision, while reducing the labor intensity of workers.
2、用于拧紧作用的套筒可根据所安装螺帽或螺钉的类型或型号进行更换，灵活度高，实用范围广，有效降低生产成本。2. The sleeve used for tightening can be replaced according to the type or model of the installed nut or screw, which has high flexibility and wide application range, effectively reducing production costs.
附图说明Description of drawings
图1为本发明立体结构示意图。Figure 1 is a schematic diagram of the three-dimensional structure of the present invention.
图2为本发明后视结构示意图。Fig. 2 is a schematic diagram of the structure of the rear view of the present invention.
图3为图2A-A剖视图。Fig. 3 is a sectional view of Fig. 2A-A.
图4为图3中P处结构示意图。FIG. 4 is a schematic diagram of the structure at P in FIG. 3 .
具体实施方式Detailed ways
下面将结合附图对本发明做进一步详细说明。The present invention will be described in further detail below in conjunction with the accompanying drawings.
如图1-3所示，一种飞轮自动拧紧机，包括有竖直设置的机架1，机架1上设有升降机构，升降机构上设有拧紧机构。可在机架1前设有物料输送线38。As shown in Figures 1-3, a flywheel automatic tightening machine includes a vertically arranged frame 1, the frame 1 is provided with a lifting mechanism, and the lifting mechanism is provided with a tightening mechanism. A material conveying line 38 may be provided in front of the frame 1 .
机架1包括调节底板33、型材底板34、两根型材立板35、型材顶盖板36、型材固定板37；所述调节底板33水平设置，型材底板34设置在调节底板33顶部，两根型材立板35分别垂直设置在调节底板33左右两侧，型材立板35通过型材固定板37与型材底板34固定连接，型材顶盖板36水平设置在型材立板35顶部，两根型材立板35的顶部分别和型材顶盖板36底面左右两侧固定连接。Frame 1 comprises adjustment base plate 33, profile base plate 34, two profile vertical plates 35, profile top cover plate 36, profile fixing plate 37; described adjustment base plate 33 is horizontally arranged, profile base plate 34 is arranged on the top of adjustment base plate 33, two The profile vertical plate 35 is vertically arranged on the left and right sides of the adjustment base plate 33 respectively, the profile vertical plate 35 is fixedly connected with the profile base plate 34 through the profile fixing plate 37, the profile top cover plate 36 is horizontally arranged on the top of the profile vertical plate 35, two profile vertical plates The top of 35 is fixedly connected with profile top cover plate 36 bottom surfaces left and right sides respectively.
升降机构包括竖直设置在机架1前侧的直线导轨2，直线导轨2上滑移连接有升降架3，直线导轨2顶部设有限位块4。所述机架1中部设有角件5，角件5上设有横向设置的气缸安装座6，气缸安装座6上设有气缸杆头朝上设置的升降气缸7，升降气缸7杆头上设有Y接头8，升降架3后侧面设有气缸推座9，所述Y接头8和气缸推座9连接。还包括有连接气缸升降座6和升降架3的拖链39。The elevating mechanism comprises a linear guide rail 2 vertically arranged on the front side of the frame 1, a lifting frame 3 is slidably connected to the linear guide rail 2, and a limit block 4 is arranged on the top of the linear guide rail 2. The middle part of the frame 1 is provided with a corner fitting 5, and the corner fitting 5 is provided with a horizontally arranged cylinder mounting seat 6. The cylinder mounting seat 6 is provided with a lift cylinder 7 with the head of the cylinder facing upwards. A Y joint 8 is provided, and a cylinder push seat 9 is provided on the rear side of the lifting frame 3, and the Y joint 8 is connected with the cylinder push seat 9. Also comprise the towline 39 that connects cylinder lift seat 6 and lifting frame 3.
升降架3包括和直线导轨2上下滑移连接的后板10，设置在后板10底部的底板11和设置在后板10顶部的顶板12。The lifting frame 3 includes a rear plate 10 sliding up and down connected with the linear guide rail 2 , a bottom plate 11 arranged at the bottom of the rear plate 10 and a top plate 12 arranged at the top of the rear plate 10 .
拧紧机构设置在升降架3上，拧紧机构包括有固定在后板10上伺服电机安装座13，伺服电机安装座13上设有输出轴朝下设置的伺服电机14，伺服电机14输出轴上设有联轴器15，底板11底部设有拧紧机械手16，拧紧机械手16顶部穿过底板11与联轴器15连接。The tightening mechanism is arranged on the lifting frame 3, and the tightening mechanism includes a servo motor mounting seat 13 fixed on the back plate 10, the servo motor mounting seat 13 is provided with a servo motor 14 with the output shaft facing downwards, and the output shaft of the servo motor 14 is provided with a servo motor. There is a shaft coupling 15, the bottom of the base plate 11 is provided with a tightening manipulator 16, and the top of the tightening manipulator 16 passes through the base plate 11 and is connected with the shaft coupling 15.
如图4所示，拧紧机械手16包括第一旋转轴17、法兰盘18、轴承19、转轴隔圈20、第二旋转轴21、第二旋转轴弹簧22、第三旋转轴23、套筒24、直线轴承25、导杆26、导杆盖板27、弹簧垫片28、导杆弹簧29、卡爪支架30、卡爪连接板31和卡爪32。As shown in Figure 4, the tightening manipulator 16 includes a first rotating shaft 17, a flange 18, a bearing 19, a rotating shaft spacer 20, a second rotating shaft 21, a second rotating shaft spring 22, a third rotating shaft 23, a sleeve 24. Linear bearing 25, guide rod 26, guide rod cover plate 27, spring washer 28, guide rod spring 29, claw bracket 30, claw connecting plate 31 and claw 32.
轴承19固定在底板11上，第一旋转轴17延竖直方向设置且与轴承19相配合，第一旋转轴17顶部穿过轴承19且与联轴器15连接，所述法兰盘18套设在第一旋转轴17外且固定在底板11底部，第一旋转轴17和法兰盘18之间设有转轴隔圈20。The bearing 19 is fixed on the base plate 11, the first rotating shaft 17 is vertically arranged and matched with the bearing 19, the top of the first rotating shaft 17 passes through the bearing 19 and is connected with the coupling 15, and the flange 18 sets It is arranged outside the first rotating shaft 17 and fixed on the bottom of the bottom plate 11 , and a rotating shaft spacer 20 is provided between the first rotating shaft 17 and the flange 18 .
第一旋转轴17底部固定有第二旋转轴21，第二旋转轴21为空心轴，第二旋转轴21内设有第二旋转轴弹簧22，第二旋转轴21内底部设有第三旋转轴23，第三旋转轴23处于第二旋转轴弹簧22下方，第三旋转轴23底部设有套筒24。轴承19中心轴线、第一旋转轴17中心轴线、法兰盘18中心轴线、第二旋转轴21中心轴线、第三旋转轴23中心轴线和套筒24中心轴线均相重合。套筒24可根据所安装螺帽或螺钉的类型或型号进行更换，灵活度高，实用范围广。The bottom of the first rotating shaft 17 is fixed with a second rotating shaft 21, the second rotating shaft 21 is a hollow shaft, the second rotating shaft 21 is provided with a second rotating shaft spring 22, and the inner bottom of the second rotating shaft 21 is provided with a third rotating shaft. The shaft 23, the third rotating shaft 23 is located under the second rotating shaft spring 22, and the bottom of the third rotating shaft 23 is provided with a sleeve 24. The central axis of the bearing 19, the central axis of the first rotating shaft 17, the central axis of the flange 18, the central axis of the second rotating shaft 21, the central axis of the third rotating shaft 23 and the central axis of the sleeve 24 are all coincident. The sleeve 24 can be replaced according to the type or model of the installed nut or screw, which has high flexibility and wide practical range.
第二旋转轴21外侧底部设有卡爪支架30，卡爪支架30上铰接有卡爪32，卡爪32顶部与卡爪连接板31底部铰接，卡爪连接板31顶部与法兰盘18外侧底部铰接；所述底板11上还设有直线轴承25，所述导杆26延竖直方向设置，导杆26上端与直线轴承25相配合，导杆26顶部设有导杆盖板27，导杆26底部与卡爪支架30上侧面固定连接，导杆26下端套设有导杆弹簧29，导杆弹簧29与直线轴承25之间设有弹簧垫片28。The bottom of the outer side of the second rotating shaft 21 is provided with a claw bracket 30, and a claw 32 is hinged on the claw bracket 30, and the top of the claw 32 is hinged with the bottom of the claw connecting plate 31, and the top of the claw connecting plate 31 is connected to the outside of the flange 18. The bottom is hinged; the base plate 11 is also provided with a linear bearing 25, and the guide rod 26 is arranged in a vertical direction. The bottom of the rod 26 is fixedly connected to the upper side of the claw bracket 30 , the lower end of the guide rod 26 is covered with a guide rod spring 29 , and a spring washer 28 is arranged between the guide rod spring 29 and the linear bearing 25 .
其中，卡爪32的个数为3个以上，所述卡爪连接板31的个数与卡爪32的个数相等，可根据需求设置相当数量的卡爪32，使抓紧更为牢固。Wherein, the number of claws 32 is more than 3, and the number of the claw connecting plates 31 is equal to the number of claws 32, and a considerable number of claws 32 can be set according to requirements, so that the grip is firmer.
导杆26的个数为3个以上，所述直线轴承25的个数、导杆盖板27的个数、导杆弹簧29的个数、弹簧垫片28的个数均与导杆26的个数相等。可根据需求设置相当数量的导杆26，确保卡爪支架30稳定升降的情况下设置最合理数量的导杆26。The number of guide rods 26 is more than 3, and the number of the linear bearings 25, the number of guide rod cover plates 27, the number of guide rod springs 29, and the number of spring washers 28 are the same as those of the guide rod 26. The number is equal. A considerable number of guide rods 26 can be set according to requirements, and the most reasonable number of guide rods 26 can be set under the condition of ensuring the stable lifting of the claw bracket 30 .
在工作过程中，在飞轮上需要拧入螺帽的位置放入螺帽，放入螺帽的飞轮随着物料输送线38运送到拧紧机械手16正下方，定位完成后，升降架3带着拧紧机械手16随着直线导轨2下降，套筒24将与螺帽对准，升降架3继续下降，第二旋转轴弹簧22慢慢被压缩，卡爪32将抓住飞轮。 此时，伺服电机14启动带动拧紧机械手16慢慢转动，当套筒24与螺帽卡准后，伺服电机14带动拧紧机械手16快速转动，将螺帽快速拧入到位，大大提高了螺帽拧紧速度，提高安装效率和精度，同时降低了工人的劳动强度。During the working process, the nut needs to be screwed into the position on the flywheel and put into the nut, and the flywheel put into the nut is transported to the right below the tightening manipulator 16 along with the material conveying line 38. After the positioning is completed, the lifting frame 3 takes the tightening The manipulator 16 descends along with the linear guide rail 2, the sleeve 24 will be aligned with the nut, the elevator frame 3 continues to descend, the second rotating shaft spring 22 is slowly compressed, and the claw 32 will catch the flywheel. At this time, the servo motor 14 starts to drive the tightening manipulator 16 to rotate slowly. After the sleeve 24 is aligned with the nut, the servo motor 14 drives the tightening manipulator 16 to rotate quickly, and the nut is quickly screwed in place, which greatly improves the nut tightening process. Speed, improve installation efficiency and accuracy, while reducing the labor intensity of workers.
本文中所描述的具体实施例仅仅是对本发明精神作举例说明。本发明所属技术领域的技术人员可以对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代，但并不会偏离本发明的精神或者超越所附权利要求书所定义的范围。The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which the present invention belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the present invention or go beyond the definition of the appended claims range.
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| CN110076549A (en) * | 2019-04-29 | 2019-08-02 | 深圳市迈特迅科技有限公司 | A kind of universal floating self-conductance normal solution screw terminal |
| CN111098104A (en) * | 2019-11-28 | 2020-05-05 | 武汉晟创自动化工程有限公司 | Automatic overturning follow-up tool for air pressure disc type brake |
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