CN105003146A - Installation structure for safety door rolling wheels - Google Patents
Installation structure for safety door rolling wheels Download PDFInfo
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- CN105003146A CN105003146A CN201510323878.3A CN201510323878A CN105003146A CN 105003146 A CN105003146 A CN 105003146A CN 201510323878 A CN201510323878 A CN 201510323878A CN 105003146 A CN105003146 A CN 105003146A
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- roller
- safety door
- rolling wheels
- rolling
- guide rod
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Abstract
An installation structure for safety door rolling wheels comprises the rolling wheels, a rolling wheel guide rod and a safety door. The rolling wheels are fixed to the safety door. The rolling wheel guide rod is fixed to a device. The rolling wheels and the rolling wheel guide rod are assembled in a linear movement manner so that the safety door can slide in a reciprocating manner. The installation structure is characterized in that the number of the rolling wheels is more than one, one part of the rolling wheels are vertically and symmetrically assembled at one end of the rolling wheel guide rod; the other part of the rolling wheels are assembled on the upper side of the middle of the rolling wheel guide rod; no rolling wheels are assembled on the lower side of the middle of the rolling wheel guide rod; and the safety door force bearing manner is a cantilever beam force bearing manner. A safety door force diagram is established by applying theoretical mechanics, and the rolling wheel installation structure is reasonably arranged according to force bearing analysis, wherein the two corresponding rolling wheels are vertically and symmetrically arranged at one end of the rolling wheel guide rod, the two or more corresponding rolling wheels are assembled on the upper side of the maximum force bearing point side by side, and no rolling wheels are assembled on the lower side of the maximum force bearing point. Compared with a traditional structure, under the same use condition, rolling wheel abrasion can be reduced, the service life of the rolling wheels can be prolonged, stability of the safety door can be improved, and the use cycle of the safety door is prolonged.
Description
Technical field
The present invention relates to a kind of mounting structure of roller, be specifically related to a kind of safety door roller installation structure for die casting machine/injection machine, refer in particular to and be applied to the stressed roller installation structure for semi girder form of safety door.
Background technology
In plant equipment industry; safety device has very important effect; it is not only the most effective protective barrier of device operator personal safety; also be reduce the most effective measures that security incident occurs in enterprise; the protection of length to device operator in its application life has extremely important meaning, particularly easily causes the equipment of personal safety accident more obvious.
Safety device has the safety door of a lot of form such as die casting machine.Die casting is as a kind of method of state-of-the-art metal forming, because it is efficient, few cut and be widely used without the advantage of cutting, but its high temperature, high pressure, Special Processes of Metal Castings technique at a high speed, to die casting equipment safety device and safety door propose more and more higher requirement.
The exit structure form of die casting machine has multi-form according to different types, and the safety door of the safety door of current most of die casting machine particularly large-scale die-casting machine all adopts roller as the form of structure of the stressed support of safety door.Life cycle is short and use unstable to use this form of structure safety door easily to occur according to investigations, when the life cycle of safety door is short and when using unstable the most directly performance exactly safety effect is not had to operating personnel, easily cause security incident; Secondly because the unstability of the use of safety door can increase the enterprise maintenance time greatly, thus greatly production efficiency is had influence on.Research discovery causes the short and factors of instability of its life cycle to have multiple, wherein the most direct, the most serious factor is exactly that safety door is in the process of high-frequency open and close, the wearing and tearing easily causing safety door roller because roller stress is unreasonable, particularly when working condition is severe, wearing and tearing are faster more serious.After rolling wheel wear, cause safety door relative to the tenesmus of rail bar position and increase and gap between rail bar fitting face, can cause safety door in open and close process, touch travel switch less than its safety effect, the inefficacy and the mechanical disorder that cause safety door are reported to the police, and finally cause security incident occurring and reducing production efficiency.Cause security incident and equipment fault so easily wear and tear for safety door roller and reduce the situation of production efficiency, developing and a kind ofly make safety door force structure more reasonable and the method that effectively can solve the potential safety hazard of rubstrip is very necessary.
Summary of the invention
Object of the present invention aims to provide that a kind of structure is simple, reasonable stress, wearing and tearing are little, it is simple, durable in use to assemble, the mounting structure of the safety door roller of stable performance, to overcome deficiency of the prior art.
The mounting structure of a kind of safety door roller designed by this object, comprises roller, roller guiding and safety door; Roller is fixed on safety door, and roller guiding is fixed on equipment, the assembling of roller and roller guiding linear movement, realizes the round slip of safety door; It is characterized in that: roller arranges several, a part of roller is laterally zygomorphic is assemblied in roller guiding one end, and another part roller is assemblied in upside in the middle part of roller guiding, and in the middle part of roller guiding, downside roller-less is installed; The stress form of safety door is semi girder stress form.
Roller guiding is equipped with roller by the upside of shearing force and the maximum stress point of bending moment force.Stress point by formula Ra=G*L2/L1 and Rb=G* (L1+L2)/L1 obtain (wherein, G be safety door from gravity, L1 be safety door center of gravity to the distance of strong point B, L2 be the distance of strong point B to strong point A, Ra is strong point A support reaction, Rb is strong point B support reaction); Stress point is most dangerouse cross-section place, and the active force suffered by roller being namely arranged on stress point is maximum.
Again by friction formula f=F* μ known (wherein, μ is friction factor), when μ is constant, directed force F is larger, then frictional force f is larger, thus causes the wearing and tearing between the two articles of quite motion larger.
According to above-mentioned analytical calculation, on the upside of stress point, two or more roller is installed side by side, to reduce the support force of each roller, reduces roller frictional force, reach the object reducing rolling wheel wear amount.
Roller guiding end is laterally zygomorphic is provided with two rollers.
The present invention sets up safety door force diagram by utility theory mechanics, according to force analysis rational deployment roller installation structure, the wherein laterally zygomorphic assembling two in roller guiding one end roller, assemble two or more rollers side by side on the upside of maximum stress point, on the downside of maximum stress point, roller-less is installed.It is relative to traditional structure, under equal service condition, can realize rolling wheel wear and reduce, and extends roller application life, raising safety door stability and increase safety door life cycle.The present invention is applicable to die casting machine/injection machine, particularly the safety door of large-scale die-casting machine/injection machine, effectively can reduce the wearing and tearing of safety door roller, extends the application life of safety door, to the personal safety protection that device operator is more long-acting.
Accompanying drawing explanation
Fig. 1 is the assembly structure schematic diagram of one embodiment of the invention.
Fig. 2 is the partial enlarged drawing of one embodiment of the invention.
Fig. 3 is the force analysis figure of one embodiment of the invention.
Fig. 4 is the support reaction figure of one embodiment of the invention safety door strong point A and B.
Fig. 5 is the stressed bending moment diagram of one embodiment of the invention safety door.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
See Fig. 1-Fig. 2, the mounting structure of safety door roller, comprises roller 1, roller guiding 2 and safety door 3; Roller 1 is fixed on safety door 3, and roller guiding 2 is fixed on equipment, and roller 1 and the assembling of roller guiding 2 linear movement, realize the round slip of safety door 3; Roller 1 arranges four, and wherein two rollers 1 are laterally zygomorphic is assemblied in roller guiding 2 one end, and remaining two rollers 1 are assemblied in upside in the middle part of roller guiding 2, and in the middle part of guide rod 2, roller is not installed in downside.
Specifically, the stress form of safety door 3 is semi girder stress form.
Roller guiding 2 is equipped with roller 1 by the upside of shearing force and the maximum stress point B of bending moment force, and roller 1 is not assembled in downside.
See Fig. 3-Fig. 5, stress point B is obtained by following analysis:
By: ∑ Fy=0, ∑ My=0
Try to achieve: Ra=G*L2/L1 and Rb=G* (L1+L2)/L1
Wherein, G: safety door is from gravity;
L1: safety door center of gravity is to the distance of strong point B;
L2: strong point B is to the distance of strong point A;
Ra: strong point A support reaction;
Rb: strong point B support reaction.
From above formula and Fig. 4 and Fig. 5 force diagram, stress point B by shearing force and bending moment force maximum, be most dangerouse cross-section place, the active force suffered by roller 1 being namely arranged on stress point B is maximum.
Again by friction formula f=F* μ known (wherein, μ is friction factor), when μ is constant, directed force F is larger, then frictional force f is larger, thus causes the wearing and tearing between the two articles of quite motion larger.
The conclusion that the above analysis can draw is: under safety door 3 conducts oneself with dignity certain condition, reduce the frictional force between the roller 1 of stress point B and roller guiding 2, will reduce the support force of stress point B place roller 1.As shown in Figure 2, at stress point B place, two rollers 1 are installed side by side, support force suffered by each roller 1 will become as original 1/2nd, under equal service condition, the wear extent of roller 1 will significantly reduce, the application life of roller 1 extends, and the life cycle of safety door 3 also increases thereupon, and stability also improves thereupon.
The present invention carries out analysis by utility theory mechanics to safety door stressed and obtains making the stressed more rational arrangement of roller 1, roller 1 wearing and tearing can be realized reduce, extend roller 1 application life, raising safety door 3 stability and the good effect increasing safety door 3 life cycle.
Above-mentioned is preferred version of the present invention, and not in order to limit the present invention, any amendment done within every the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a mounting structure for safety door roller, comprises roller (1), roller guiding (2) and activity safety door (3); Roller (1) is fixed on dodge gate (3), roller guiding (2) is fixed on equipment, roller (1) and the assembling of roller guiding (2) linear movement, realize the round slip of activity safety door (3); It is characterized in that: roller (1) arranges several, part roller (1) is laterally zygomorphic is assemblied in roller guiding (2) one end, and another part roller (1) is assemblied in upside, roller guiding (2) middle part.
2. the mounting structure of safety door roller according to claim 1, is characterized in that the stress form of safety door is semi girder stress form.
3. the mounting structure of safety door roller according to claim 2, is characterized in that roller guiding (2) is upper and is equipped with roller (1) by the upside of shearing force and the maximum stress point (B) of bending moment force.
4. the mounting structure of safety door roller according to claim 3, is characterized in that roller guiding (2) is upper and does not assemble roller (1) by shearing force and maximum stress point (B) downside of bending moment force.
5. the mounting structure of safety door roller according to claim 4, is characterized in that two rollers (1) are assembled side by side in stress point (B) upside.
6. the mounting structure of safety door roller according to claim 4, is characterized in that two or more roller (1) is assembled side by side in stress point (B) upside.
7. the mounting structure of safety door roller according to any one of claim 1-6, is characterized in that roller guiding (2) end is laterally zygomorphic and is provided with two rollers (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510323878.3A CN105003146A (en) | 2015-06-12 | 2015-06-12 | Installation structure for safety door rolling wheels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510323878.3A CN105003146A (en) | 2015-06-12 | 2015-06-12 | Installation structure for safety door rolling wheels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105003146A true CN105003146A (en) | 2015-10-28 |
Family
ID=54375982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510323878.3A Pending CN105003146A (en) | 2015-06-12 | 2015-06-12 | Installation structure for safety door rolling wheels |
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| Country | Link |
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| CN (1) | CN105003146A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU463510A1 (en) * | 1973-07-06 | 1975-03-15 | Специальное Конструкторское Бюро По Проектированию Машин Для Точного Литья При Заводе "Литмаш" Им. С. М. Кирова | Safety fence mainly for die casting machines |
| CN2703482Y (en) * | 2004-06-08 | 2005-06-08 | 梁骏毅 | Shower-taking room |
| CN2751128Y (en) * | 2004-12-07 | 2006-01-11 | 王北胜 | Slide-rail type glass door for shower room |
| JP2006150384A (en) * | 2004-11-26 | 2006-06-15 | Toyota Motor Corp | Safety door device |
| CN101876229A (en) * | 2009-04-28 | 2010-11-03 | 哈瓦有限公司 | Be used to keep the balladeur train and the separating element of separating element |
| CN101992284A (en) * | 2009-08-21 | 2011-03-30 | 上海一达机械有限公司 | Electric front safety door |
-
2015
- 2015-06-12 CN CN201510323878.3A patent/CN105003146A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU463510A1 (en) * | 1973-07-06 | 1975-03-15 | Специальное Конструкторское Бюро По Проектированию Машин Для Точного Литья При Заводе "Литмаш" Им. С. М. Кирова | Safety fence mainly for die casting machines |
| CN2703482Y (en) * | 2004-06-08 | 2005-06-08 | 梁骏毅 | Shower-taking room |
| JP2006150384A (en) * | 2004-11-26 | 2006-06-15 | Toyota Motor Corp | Safety door device |
| CN2751128Y (en) * | 2004-12-07 | 2006-01-11 | 王北胜 | Slide-rail type glass door for shower room |
| CN101876229A (en) * | 2009-04-28 | 2010-11-03 | 哈瓦有限公司 | Be used to keep the balladeur train and the separating element of separating element |
| CN101992284A (en) * | 2009-08-21 | 2011-03-30 | 上海一达机械有限公司 | Electric front safety door |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151028 |