CN109872616B - Equipment is experienced in safety helmet striking - Google Patents
Equipment is experienced in safety helmet striking Download PDFInfo
- Publication number
- CN109872616B CN109872616B CN201910170348.8A CN201910170348A CN109872616B CN 109872616 B CN109872616 B CN 109872616B CN 201910170348 A CN201910170348 A CN 201910170348A CN 109872616 B CN109872616 B CN 109872616B
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- China
- Prior art keywords
- guide rail
- sliding block
- impact
- sliding
- damper
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- 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.)
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B9/00—Simulators for teaching or training purposes
Abstract
The invention discloses maintenance-free safety helmet impact experience equipment which comprises a plurality of safety helmet impact experience units and a box body for accommodating the safety helmet impact experience units; the safety helmet impact experience unit comprises a sliding block, an impact part connected with the sliding block, a guide rail for the sliding block to slide up and down, a kinetic energy linear motor for providing upward sliding for the sliding block, a contact switch and a support frame arranged in the box body and used for bearing the sliding block, the guide rail, the linear motor and the contact switch; the box body is provided with a vertical chute through which the impact part can pass and can move up and down; the slide block is sleeved on the guide rail, the antirust sliding sleeve is arranged between the slide block and the guide rail, and the antirust sliding sleeve is arranged between the slide block and the guide rail, so that the operation effect is smoother, and the condition that the equipment is unsmooth in operation due to rusting between the guide rail and the slide block can be effectively prevented; one side of the sliding block is connected with the impact part, and the other side of the sliding block is provided with a balancing weight; the design ensures that the slide block is in dynamic balance to prevent the slide block from inclining to one side of the impact part, and the guide rail cannot deform.
Description
The patent application of the invention is a divisional application of Chinese patent application No. 201710223625.8, the application No. of the original application is 201710223625.8, the application date is 2017, and 04 and 07 days, and the name of the invention is helmet impact experience equipment.
Technical Field
The invention relates to an experience device, in particular to a crash experience device for a safety helmet.
Background
Along with the construction of large-scale infrastructure in China, construction engineering becomes an industry with higher accident risk, the government pays attention to the construction safety problem and sets up a safety work policy of prevention as the main, safety first and comprehensive treatment; building a building safety experience venue, and allowing participants of building activities to experience the importance of safety protection articles in building production activities and simulate human feeling when safety accidents occur; at present, equipment is experienced to domestic building site's safety is connected with on the slider and carries out the striking part that strikes to experience the person, and the slider drives striking part when gliding on the guide rail and moves, establishes the portion at present and has two weak points: firstly, the sliding effect between the sliding block and the guide rail is realized mainly through a linear bearing, and the linear bearing and the guide rail are easy to rust in the using process, so that the sliding block and the guide rail are unsmooth in operation; one side of slider is connected with striking part mutually for the slider can be to being equipped with the direction slope of striking part one side on the guide rail operation, and in the long-term use, the dynamic unbalance of slider whereabouts can lead to the guide rail to warp thereby makes equipment operation unsmooth, and these two technical problem are that relevant technical field personnel need to solve urgently.
Disclosure of Invention
The invention aims to provide a safety helmet impact experience device which is novel and reasonable in structure, runs smoothly for a long time and is free of maintenance.
In order to achieve the above purpose, the solution of the invention is:
a crash experience device for a safety helmet comprises a plurality of crash experience units for a safety helmet and a box for accommodating the crash experience units for the safety helmet; the safety helmet impact experience unit comprises a sliding block, an impact part connected with the sliding block, a guide rail for the sliding block to slide up and down, a kinetic energy linear motor for providing upward sliding for the sliding block, a contact switch and a support frame arranged in the box body and used for bearing the sliding block, the guide rail, the linear motor and the contact switch; the box body is provided with a vertical chute through which the impact component can pass and can move up and down; the slide block is sleeved on the guide rail, and an antirust slide sleeve is arranged between the slide block and the guide rail; one side of the sliding block is connected with the impact part, and the other side of the sliding block is provided with a balancing weight; the supporting frame is sequentially provided with an upper plate, a middle plate and a bottom plate from top to bottom; the guide rail is arranged between the upper plate and the middle plate, the guide rail is vertically arranged, one end of the guide rail is connected with the upper plate, and the other end of the guide rail is connected with the middle plate; the linear motor is arranged on the bottom plate, a through hole for the linear motor to pass through is formed in the middle plate, and the through hole is formed in the center of the middle plate; the contact switch is arranged on the upper plate; the guide rails comprise a first guide rail and a second guide rail, and the first guide rail and the second guide rail are respectively positioned at two ends of the middle plate; the lower end of the sliding block is provided with a groove in an inverted concave shape, the sliding block comprises a first supporting part, a second supporting part and a connecting part for connecting the first supporting part and the second supporting part, and the length of the connecting part is smaller than that of the middle plate; the first supporting part and the second supporting part are respectively provided with a sliding hole for the first guide rail and the second guide rail to pass through; the upper surface of the middle plate is provided with a damper, the damper comprises a first damper and a second damper, and the first damper and the second damper are respectively arranged on two sides of the through hole and are positioned below the groove; the height of the damper is greater than the heights of the first supporting part and the second supporting part; the rust-proof sliding sleeve comprises a first rust-proof sliding sleeve arranged on the outer surface of the guide rail and a second rust-proof sliding sleeve arranged on the inner surface of the sliding hole; the first rustproof sliding sleeve and the second rustproof sliding sleeve are hollow cylinders, and the inner diameter of the second rustproof sliding sleeve is larger than the outer diameter of the first rustproof sliding sleeve.
The rustproof sliding sleeve is made of PPR materials.
The impact part comprises an impact rod and an impact ball arranged on the impact rod, one end of the impact rod is connected with the sliding block, and the other end of the impact rod extends out of the vertical chute of the box body.
The impact rod is hinged with the sliding block through a rotating shaft.
The striking rod with through threaded connection between the striking ball, striking ball surface cover is equipped with the rubber sleeve.
The balancing weight and the sliding block are connected together through threads.
The safety helmet collision experience unit quantity is three, and is three the safety helmet collision experience unit sets up side by side in the box.
By adopting the technical scheme, the invention has the beneficial effects that:
most safety helmet impact experience equipment in the market at present mainly realizes sliding action through mutual matching of linear bearings, the linear bearings need to be maintained regularly to ensure the lubricity of the linear bearings to prevent the linear bearings from rusting, otherwise, the linear bearings are rusted, and the linear motors push the sliding blocks to cause unsmooth pushing and damage the linear motors; the structure solves the problem of unsmooth operation caused by rust generated in the use process of the linear bearing and the guide rail while solving the complicated mode that the linear bearing needs to be maintained regularly by arranging the rust-proof sliding sleeve between the sliding block and the guide rail to replace the linear bearing; one end of the sliding block is connected with the impact part, if the other side of the sliding block is not provided with the balancing weight, the sliding block is in an unbalanced state, and in the long-term use process, the sliding block can incline to one side of the impact part to deform the guide rail; this design is equipped with the balancing weight on the slider is connected the other one side that corresponds with the striking part and makes the slider keep dynamic balance can not incline and lead to the fact the deformation of guide rail to make linear electric motor can be smooth and easy promote the slider, prevent that linear electric motor from promoting the condition that makes its damage to the unable promotion of slider by force, the slider stretches to the free falling body that the high point also can be smooth and easy. But also can effectively solve the problem that the equipment is not smoothly operated due to rust generated by the matching of the current sliding block and the guide rail through the linear bearing.
Drawings
FIG. 1 is a schematic diagram of the structure of a crash experience unit of the present invention;
FIG. 2 is an enlarged schematic view of FIG. 1 at A according to the present invention;
FIG. 3 is a schematic view of the slider configuration of the present invention;
FIG. 4 is a schematic structural view of a rust-preventive sliding sleeve according to the present invention;
FIG. 5 is a schematic view of the slider and impact member connection of the present invention;
fig. 6 is a schematic view of the overall structure of the present invention.
Description of the reference symbols
1-helmet impact experience unit 11-slider 111-first support 112-second support 113-connecting 114-groove 115-sliding hole 12-impact part 121-impact bar 122-impact ball 13-guide rail 131-first guide rail 132-second guide rail 14-linear motor 15-contact switch 16-support frame 161-upper plate 162-middle plate 163-bottom plate;
2-box 21-vertical chute;
3-an antirust sliding sleeve 31-a first antirust sliding sleeve 32-a second antirust sliding sleeve;
4-counterweight block
5-damper 51-first damper 52-second damper;
6-rotating shaft.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention and the accompanying drawings, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 6, a crash experience device for a helmet includes a plurality of crash experience units and a case accommodating the crash experience units; the safety helmet impact experience unit comprises a sliding block, an impact part connected with the sliding block, a guide rail for the sliding block to slide up and down, a kinetic energy linear motor for providing upward sliding for the sliding block, a contact switch and a support frame arranged in the box body and used for bearing the sliding block, the guide rail, the linear motor and the contact switch; the box body is provided with a vertical chute through which the impact part can pass and can move up and down; the slide block is sleeved on the guide rail, and an antirust sliding sleeve is arranged between the slide block and the guide rail; one side of the sliding block is connected with the impact part, and the other side of the sliding block is provided with a balancing weight; most safety helmet impact experience equipment in the market at present mainly realizes sliding action through mutual matching of linear bearings between a sliding block 11 and a guide rail 13, the linear bearings need to be maintained regularly to ensure the lubricity of the linear bearings to prevent the linear bearings from rusting, otherwise, the linear bearings and the guide rail generate rusting, and the linear motor 14 pushes the sliding block 11 to cause unsmooth pushing, so that the linear motor is damaged; according to the structure, the rust-proof sliding sleeve 3 is arranged between the sliding block 11 and the guide rail 13 to replace a linear bearing, so that the problem of unsmooth operation caused by rust generated in the use process of the linear bearing and the guide rail is solved while the complicated way that the linear bearing needs to be maintained regularly is solved; one end of the sliding block 11 is connected with the impact part 12, if the other side is not provided with a balancing weight, the sliding block is in an unbalanced state, and in the long-term use process, the sliding block can incline to one side of the impact part 12 to deform the guide rail; this design is equipped with balancing weight 4 on slider 11 is connected the other side that corresponds with striking part 12 and makes slider 11 keep dynamic balance can not incline and lead to the fact the deformation of guide rail 13 to make linear electric motor 14 can be smooth and easy promote slider 11, prevent that linear electric motor 14 from promoting the condition that makes its damage to slider 11 can't promote by force, slider 11 stretches to the free falling body that the high point also can be smooth and easy.
Further, the supporting frame 16 is provided with an upper plate 161, a middle plate 162 and a bottom plate 163 from top to bottom in sequence; the guide rail 13 is arranged between the upper plate 161 and the middle plate 162, the guide rail 13 is vertically arranged, one end of the guide rail 13 is connected with the upper plate 161, and the other end is connected with the middle plate 162; the linear motor 14 is arranged on the bottom plate 163, the middle plate 162 is provided with a through hole for the linear motor 14 to pass through, and the through hole is arranged at the center of the middle plate 162; the contact switch 15 is provided on the upper plate 161; this reasonable in design is simple, linear electric motor 14 locates on bottom plate 163, linear electric motor 14 receives the drive, passes the medium plate and promotes slider 11, slider 11 slides along establishing guide rail 13 between medium plate 162 and upper plate 161, slider 11 receives linear electric motor 14 propelling movement to eminence to touch and locates the contact switch 15 on the upper plate 161, contact switch 15 is triggered, linear electric motor 14 retracts, slider 11 drives striking part 12 free fall and realizes the striking effect.
Further, the guide rail 13 includes a first guide rail 131 and a second guide rail 132, the first guide rail 131 and the second guide rail 132 are respectively located at two ends of the middle plate 162; the design enables the sliding block 11 to be stable in the operation process, and if the number of the guide rails 13 is only one, the sliding block 11 is easy to shake and unbalance in the operation process; the lower end of the sliding block 11 is provided with a groove 114 in an inverted concave shape, the sliding block 11 comprises a first supporting part 111, a second supporting part 112 and a connecting part 113 for connecting the first supporting part 111 and the second supporting part 112, and the length of the connecting part 113 is smaller than that of the middle plate 162; the first supporting part 111 and the second supporting part 112 are respectively provided with a sliding hole 115 for the first guide rail 131 and the second guide rail 132 to pass through; the upper surface of the middle plate 162 is provided with a damper 5, the damper 5 comprises a first damper 51 and a second damper 52, and the first damper 51 and the second damper 52 are respectively arranged at two sides of the through hole and are positioned below the groove 114; the height of the damper 5 is greater than the heights of the first and second support parts 111 and 112; the structure is novel and reasonable, when the sliding block 11 is pushed to a high place by the linear motor 14 and then falls freely, strong impact force is generated, the sliding block is buffered by the damper 5, direct impact on the linear motor in the falling process of the sliding block 11 is avoided, and the height of the damper 5 is greater than the heights of the first supporting part 111 and the second supporting part 112, so that the sliding block 11 is blocked by the damper 5; the damper 5 is divided into a first damper 51 and a second damper 52 which are respectively arranged at two sides of the through hole, so that the two sides are stressed uniformly, and the slide block 11 is prevented from deforming to damage the guide rail 13 in the buffering process of the damper 5; the length of the connecting portion 113 is smaller than that of the middle plate 162, and when the damper 5 is damaged, the first supporting portion 111 and the second supporting portion 112 can also support the middle plate 162 to prevent the linear motor 14 from directly falling off and breaking down.
Further, the rustproof sliding sleeve 3 includes a first rustproof sliding sleeve 31 provided on the outer surface of the guide rail 13 and a second rustproof sliding sleeve 32 provided on the inner surface of the slide hole 115; the first antirust sliding sleeve 31 and the second antirust sliding sleeve 32 are hollow cylinders, and the inner diameter of the second antirust sliding sleeve 32 is larger than the outer diameter of the first antirust sliding sleeve 31; rustproof sliding sleeve 3 divide into the parcel on guide rail 13 first rustproof sliding sleeve 31 with can prevent that the slider from rustting and locate the rustproof sliding sleeve 32 of second on the slider 11, and closely cooperate between the two and slide each other between first rustproof sliding sleeve 31 and the rustproof sliding sleeve 32 of second, this novel structure is reasonable and can effectually solve and cooperate through linear bearing between present slider 11 and the guide rail 13 to have the problem that produces the rust stain and cause the equipment operation unsmooth.
Further, the anti-rust sliding sleeve 3 is made of PPR material; the material can effectively realize the antirust effect, and has lower sliding effect due to lower cost and easy manufacture and lower friction coefficient between the first antirust sliding sleeve 31 and the second antirust sliding sleeve 32.
Further, the impact part 12 comprises an impact rod 121 and an impact ball 122 arranged on the impact rod 121, one end of the impact rod 121 is connected with the slider 11, and the other end extends out of the vertical chute 21 of the box body 2; in the design, when the slide block 11 is pushed by the linear motor 14, the slide block 11 drives the striking rod 121 to move upwards in the vertical sliding chute 21, and simultaneously the striking rod 121 also drives the striking ball 122 to move upwards to reach a high position.
Further, the striking rod 121 and the sliding block 11 are hinged together through the rotating shaft 6; in the connection mode, after the impact part 12 collides with an experiencer, the impact part has an upward bouncing action, so that the whole experience is closer to reality, and the head of the experiencer is not pressed by the impact part 12 all the time.
Further, the impact rod 121 is in threaded connection with the impact ball 122, and a rubber sleeve is sleeved on the outer surface of the impact ball 122; this connection may enable a different weight impact experience by changing the weight of impact ball 122; being equipped with the rubber sleeve can make the striking ball when striking the safety helmet, can not lead to the fact wearing and tearing to the safety helmet, have certain buffering effect and make striking ball 122 more pleasing to the eye.
Further, the counterweight block 4 is connected with the sliding block 11 through threads; this connected mode, when striking ball 122 carries out different weight and changes, balancing weight 4 also can carry out corresponding change and ensure that slider 11 keeps balanced, prevents that the unbalance of slider 11 from causing the deformation to the guide rail.
Furthermore, the number of the safety helmet impact experiencing units 1 is three, and the three safety helmet impact experiencing units 1 are arranged in the box body 2 side by side; the design can enable three experiencers to experience simultaneously, and waiting time of the experiencers can be effectively saved when the number of the experiencers is large.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. An equipment is experienced in safety helmet striking which characterized in that: the crash experience system comprises a plurality of crash experience units and a box body for accommodating the crash experience units; the safety helmet impact experience unit comprises a sliding block, an impact part connected with the sliding block, a guide rail for the sliding block to slide up and down, a kinetic energy linear motor for providing upward sliding for the sliding block, a contact switch and a support frame arranged in the box body and used for bearing the sliding block, the guide rail, the linear motor and the contact switch; the box body is provided with a vertical chute through which the impact component can pass and can move up and down; the slide block is sleeved on the guide rail, and an antirust slide sleeve is arranged between the slide block and the guide rail; one side of the sliding block is connected with the impact part, and the other side of the sliding block is provided with a balancing weight; the supporting frame is sequentially provided with an upper plate, a middle plate and a bottom plate from top to bottom; the guide rail is arranged between the upper plate and the middle plate, the guide rail is vertically arranged, one end of the guide rail is connected with the upper plate, and the other end of the guide rail is connected with the middle plate; the linear motor is arranged on the bottom plate, a through hole for the linear motor to pass through is formed in the middle plate, and the through hole is formed in the center of the middle plate; the contact switch is arranged on the upper plate; the guide rails comprise a first guide rail and a second guide rail, and the first guide rail and the second guide rail are respectively positioned at two ends of the middle plate; the lower end of the sliding block is provided with a groove in an inverted concave shape, the sliding block comprises a first supporting part, a second supporting part and a connecting part for connecting the first supporting part and the second supporting part, and the length of the connecting part is smaller than that of the middle plate; the first supporting part and the second supporting part are respectively provided with a sliding hole for the first guide rail and the second guide rail to pass through; the upper surface of the middle plate is provided with a damper, the damper comprises a first damper and a second damper, and the first damper and the second damper are respectively arranged on two sides of the through hole and are positioned below the groove; the height of the damper is greater than the heights of the first supporting part and the second supporting part; the rust-proof sliding sleeve comprises a first rust-proof sliding sleeve arranged on the outer surface of the guide rail and a second rust-proof sliding sleeve arranged on the inner surface of the sliding hole; the first antirust sliding sleeve and the second antirust sliding sleeve are hollow cylinders, and the inner diameter of the second antirust sliding sleeve is larger than the outer diameter of the first antirust sliding sleeve;
the impact part comprises an impact rod and an impact ball arranged on the impact rod, one end of the impact rod is connected with the sliding block, and the other end of the impact rod extends out of the vertical chute of the box body.
2. A crash experience device according to claim 1 wherein: the rustproof sliding sleeve is made of PPR materials.
3. A crash experience device according to claim 1 wherein: the impact rod is hinged with the sliding block through a rotating shaft.
4. A crash experience device according to claim 3 wherein: the striking rod with through threaded connection between the striking ball, striking ball surface cover is equipped with the rubber sleeve.
5. A headgear impact experience device according to claim 4, wherein: the balancing weight and the sliding block are connected together through threads.
6. A crash experience device according to claim 1 wherein: the safety helmet collision experience unit quantity is three, and is three the safety helmet collision experience unit sets up side by side in the box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910170348.8A CN109872616B (en) | 2017-04-07 | 2017-04-07 | Equipment is experienced in safety helmet striking |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710223625.8A CN107067934B (en) | 2017-04-07 | 2017-04-07 | A kind of safety cap shock experience equipment |
| CN201910170348.8A CN109872616B (en) | 2017-04-07 | 2017-04-07 | Equipment is experienced in safety helmet striking |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710223625.8A Division CN107067934B (en) | 2017-04-07 | 2017-04-07 | A kind of safety cap shock experience equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109872616A CN109872616A (en) | 2019-06-11 |
| CN109872616B true CN109872616B (en) | 2021-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710223625.8A Active CN107067934B (en) | 2017-04-07 | 2017-04-07 | A kind of safety cap shock experience equipment |
| CN201910170348.8A Active CN109872616B (en) | 2017-04-07 | 2017-04-07 | Equipment is experienced in safety helmet striking |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710223625.8A Active CN107067934B (en) | 2017-04-07 | 2017-04-07 | A kind of safety cap shock experience equipment |
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| CN (2) | CN107067934B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107067934B (en) * | 2017-04-07 | 2019-03-26 | 泉州理工职业学院 | A kind of safety cap shock experience equipment |
| CN109147539A (en) * | 2018-10-19 | 2019-01-04 | 东莞理工学院 | A kind of safety cap protection experience demonstration machine structure and its application method |
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| CN204029189U (en) * | 2014-08-31 | 2014-12-17 | 西安科技大学 | Building ground safety helmet clashes into safety experiences equipment |
| CN205966358U (en) * | 2016-08-18 | 2017-02-22 | 沙洲职业工学院 | Guide rail side roll oiling station |
| CN107067934B (en) * | 2017-04-07 | 2019-03-26 | 泉州理工职业学院 | A kind of safety cap shock experience equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| FR2528886A2 (en) * | 1979-07-09 | 1983-12-23 | Coelus Gaspar | Pile driver dynamic testing procedure - has elastic helmet supporting driver at highest rebound point using lifting mechanism |
| CN204102435U (en) * | 2014-09-17 | 2015-01-14 | 北京博大经开建设有限公司 | A kind of safety helmet clashes into experience equipment |
| CN204516227U (en) * | 2015-02-16 | 2015-07-29 | 北京天恒建设工程有限公司 | A kind of safety helmet impacting body experiment device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010055673A (en) * | 1999-12-11 | 2001-07-04 | 구자홍 | Structure for supporting crank shaft in scroll compressor |
| CN1657394A (en) * | 2004-02-19 | 2005-08-24 | Hiro电梯希伦可特+龙西克有限公司 | Counterweight for a vertical elevator |
| CN102947209A (en) * | 2010-06-23 | 2013-02-27 | 蒂森克虏伯电梯股份有限公司 | Elevator system |
| CN203010189U (en) * | 2013-01-18 | 2013-06-19 | 秦恒忠 | Guide rail connecting sleeve of photovoltaic support |
| CN204029189U (en) * | 2014-08-31 | 2014-12-17 | 西安科技大学 | Building ground safety helmet clashes into safety experiences equipment |
| CN205966358U (en) * | 2016-08-18 | 2017-02-22 | 沙洲职业工学院 | Guide rail side roll oiling station |
| CN107067934B (en) * | 2017-04-07 | 2019-03-26 | 泉州理工职业学院 | A kind of safety cap shock experience equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109872616A (en) | 2019-06-11 |
| CN107067934A (en) | 2017-08-18 |
| CN107067934B (en) | 2019-03-26 |
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