CN203463540U - Guiding seat containing overtravel-preventive nitrogen spring with active safety function - Google Patents

Guiding seat containing overtravel-preventive nitrogen spring with active safety function Download PDF

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Publication number
CN203463540U
CN203463540U CN201320569741.2U CN201320569741U CN203463540U CN 203463540 U CN203463540 U CN 203463540U CN 201320569741 U CN201320569741 U CN 201320569741U CN 203463540 U CN203463540 U CN 203463540U
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CN
China
Prior art keywords
guide holder
cylinder body
seal ring
ring
nitrogen spring
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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.)
Expired - Lifetime
Application number
CN201320569741.2U
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Chinese (zh)
Inventor
赖辛林
徐勋祥
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Minghao Hardware Mold Co ltd
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Shenzhen Minghao Hardware Mold Co ltd
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Priority to CN201320569741.2U priority Critical patent/CN203463540U/en
Application granted granted Critical
Publication of CN203463540U publication Critical patent/CN203463540U/en
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Abstract

A guiding seat containing overtravel-preventive nitrogen spring with an active safety function comprises a cylinder body, wherein a hollow guiding seat is fixedly arranged at the upper end of the cylinder body, a first seal ring is arranged between the guiding seat and the cylinder body and mounted on the outer wall of the guiding seat; a piston rod is penetrated in the guiding seat, and a second seal ring is arranged between the guiding seat and the piston rod and mounted on the inner wall of the guiding seat; a gas discharge groove is formed in the inner wall of the cylinder body, and the first seal ring is arranged close to the upper end of the gas discharge groove; and a gas-filling valve is arranged at the bottom of the cylinder body. When the piston rod surpasses a standard travel in a using process and the piston rod and the guiding seat are forced to press down together, the first seal ring outside the guiding seat moves downward into the gas discharge groove in the inner wall of the cylinder body, high-pressure nitrogen in the cylinder body is leaked out from the gas discharge groove, so that the problem that explosion is generated due to overlarge pressure in the nitrogen spring caused by the fact that the piston rod surpasses a travel range is solved, and safety of an operator in a working process of the nitrogen spring is guaranteed.

Description

A kind of nitrogen spring of the anti-overtravel active safety containing guide holder
Technical field
The utility model relates to a kind of nitrogen spring, relates in particular to a kind of nitrogen spring of the anti-overtravel active safety containing guide holder.
Background technique
At present, the piston rod of existing nitrogen spring is stressed along in cylinder body during down sliding, once piston rod surpasses stroke range, the nitrogen pressure in cylinder body can overstep the extreme limit pressure and nitrogen spring is blasted, and has great potential safety hazard.
Model utility content
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, and a kind of nitrogen spring of the anti-overtravel active safety containing guide holder that can not explode is provided.
The utility model is to realize like this, a kind of nitrogen spring of the anti-overtravel active safety containing guide holder, comprise a cylinder body, described cylinder body upper end open, lower end is airtight, described cylinder body upper end is installed with the guide holder of a hollow, between described guide holder and cylinder body, be provided with one first seal ring, described the first seal ring is arranged on the outer wall of described guide holder: on described guide holder, be equipped with a piston rod, between described guide holder and piston rod, be provided with one second seal ring, described the second seal ring is arranged on the inwall of described guide holder: described inboard wall of cylinder block offers a disappointing groove, the upper end that described the first seal ring closes on described disappointing groove arranges: described cylinder base is provided with a gas charging valve.
Particularly, described cylinder base offers a vertical pore and a horizontal pore being communicated with described vertical pore, and described gas charging valve is horizontally disposed with and is communicated with described horizontal pore.
Further, be also provided with from top to bottom an outer dust ring, a jump ring and one first back-up ring between described guide holder and cylinder body, described the first back-up ring and described the first seal ring fit together.
Further, be also provided with from top to bottom an interior dust ring, a guidance tape and one second back-up ring between described guide holder and piston rod, described the second back-up ring and described the second seal ring fit together.
Particularly, the cross section of described the second seal ring is U-shaped or Y type.
Further, described gas charging valve also coordinates with a seal plug screw.
The utility model arranges disappointing groove by the cooperation place at cylinder body and guide holder, the piston rod stroke that is above standard in using process, force piston rod together with guide holder when pressing down, the first seal ring outside guide holder comes downwards in the disappointing groove of inboard wall of cylinder block, high pressure nitrogen in cylinder body outwards leaks out from the groove that loses heart, thereby solved because piston rod surpasses stroke range, cause the excessive problem that produces blast of nitrogen spring internal pressure, guarantee nitrogen spring operator's safety in the course of the work.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical solution of the utility model, to the accompanying drawing of required use in embodiment be briefly described below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the schematic diagram of the nitrogen spring of a kind of anti-overtravel active safety containing guide holder of providing of the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technological scheme in the utility model embodiment is clearly and completely described.
As shown in Figure 1, the nitrogen spring of a kind of anti-overtravel active safety containing guide holder that the utility model embodiment provides, comprise a cylinder body 1, cylinder body 1 upper end open, lower end is airtight, cylinder body 1 upper end is installed with the guide holder 2 of a hollow, between guide holder 2 and cylinder body 1, be provided with one first seal ring 21, the first seal ring 21 is arranged on the outer wall of guide holder 2: on guide holder 2, be equipped with a piston rod 3, between guide holder 2 and piston rod 3, be provided with one second seal ring 22, the second seal ring 22 is arranged on the inwall of guide holder 2: cylinder body 1 inwall offers a disappointing groove 11, the upper end that the first seal ring 21 closes on the groove 11 that loses heart arranges: cylinder body 1 bottom is provided with a gas charging valve 4.
The utility model arranges by the cooperation place at cylinder body 1 and guide holder 2 groove 11 that loses heart, piston rod 3 stroke that is above standard in using process, force piston rod 3 together with guide holder 2 when pressing down, the first seal ring 21 outside guide holder 2 comes downwards in the disappointing groove 11 of cylinder body 1 inwall, high pressure nitrogen in cylinder body 1 outwards leaks out from the groove 11 that loses heart, thereby solved because piston rod 3 surpasses stroke range, cause the excessive problem that produces blast of nitrogen spring internal pressure, guarantee nitrogen spring operator's safety in the course of the work.
Particularly, described cylinder body 1 bottom offers a vertical pore 12 and a horizontal pore 13 being communicated with vertical pore 12, gas charging valve 4 is horizontally disposed with and is communicated with horizontal pore 13, because gas charging valve 4 is not vertical installation, therefore reduced the length of cylinder body 1, and then reduced the length of nitrogen spring, be applicable to the strict occasion of spring length requirement.
Further, between described guide holder 2 and cylinder body 1, being also provided with from top to bottom an outer dust ring 23, a jump ring 24 and one first back-up ring 25, the first back-up rings 25 and the first seal ring 21 fits together.Wherein, outer dust ring 23 enters in cylinder body 1 for preventing extraneous dust, and jump ring 24, for guide holder 2 being fixed to cylinder body 1, the first back-up ring 25 for the first seal ring 21 is fixedly positioning, further improves the sealing effect of the first seal ring 21.
Further, between described guide holder 2 and piston rod 3, being also provided with from top to bottom an interior dust ring 26, a guidance tape 27 and one second back-up ring 28, the second back-up rings 28 and the second seal ring 22 fits together.Wherein, interior dust ring 26 enters in cylinder body 1 for preventing extraneous dust, and guidance tape 27 is for sliding up and down of piston rod 3 led, and the second back-up ring 28, for the second seal ring 22 is fixedly positioning, further improves the sealing effect of the second seal ring 22.
Further, the cross section of described the second seal ring 22 is U-shaped or Y type, plays the effect of enhanced leaktightness effect.
Further, the top of described piston rod 3 offers at least one maintenance screw 31, and maintenance screw 31 is used when nitrogen spring is keeped in repair.
Further, described gas charging valve 4 also coordinates with a seal plug screw 5, and seal plug screw 5, for gas charging valve 4 is sealed, prevents gas charging valve 4 gas leakage.
The above is preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications are also considered as protection domain of the present utility model.

Claims (6)

1. the nitrogen spring containing the anti-overtravel active safety of guide holder, it is characterized in that, comprise a cylinder body, described cylinder body upper end open, lower end is airtight, described cylinder body upper end is installed with the guide holder of a hollow, between described guide holder and cylinder body, be provided with one first seal ring, described the first seal ring is arranged on the outer wall of described guide holder: on described guide holder, be equipped with a piston rod, between described guide holder and piston rod, be provided with one second seal ring, described the second seal ring is arranged on the inwall of described guide holder; Described inboard wall of cylinder block offers a disappointing groove, and the upper end that described the first seal ring closes on described disappointing groove arranges: described cylinder base is provided with a gas charging valve.
2. the nitrogen spring of a kind of anti-overtravel active safety containing guide holder according to claim 1, it is characterized in that, described cylinder base offers a vertical pore and a horizontal pore being communicated with described vertical pore, and described gas charging valve is horizontally disposed with and is communicated with described horizontal pore.
3. the nitrogen spring of a kind of anti-overtravel active safety containing guide holder according to claim 1, it is characterized in that, between described guide holder and cylinder body, be also provided with from top to bottom an outer dust ring, a jump ring and one first back-up ring, described the first back-up ring and described the first seal ring fit together.
4. the nitrogen spring of a kind of anti-overtravel active safety containing guide holder according to claim 1, it is characterized in that, between described guide holder and piston rod, be also provided with from top to bottom an interior dust ring, a guidance tape and one second back-up ring, described the second back-up ring and described the second seal ring fit together.
5. the nitrogen spring of a kind of anti-overtravel active safety containing guide holder according to claim 1, is characterized in that, the cross section of described the second seal ring is U-shaped or Y type.
6. the nitrogen spring of a kind of anti-overtravel active safety containing guide holder according to claim 1, is characterized in that, described gas charging valve also coordinates with a seal plug screw.
CN201320569741.2U 2013-09-12 2013-09-12 Guiding seat containing overtravel-preventive nitrogen spring with active safety function Expired - Lifetime CN203463540U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320569741.2U CN203463540U (en) 2013-09-12 2013-09-12 Guiding seat containing overtravel-preventive nitrogen spring with active safety function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320569741.2U CN203463540U (en) 2013-09-12 2013-09-12 Guiding seat containing overtravel-preventive nitrogen spring with active safety function

Publications (1)

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CN203463540U true CN203463540U (en) 2014-03-05

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105134859A (en) * 2015-09-24 2015-12-09 上海雷瑟尔精密机械有限公司 No-voltage protection type nitrogen spring
CN105947923A (en) * 2016-07-14 2016-09-21 吉林光洋自动化液压系统有限公司 Pressure self-adjusting ejector
CN108105310A (en) * 2016-11-24 2018-06-01 江苏耐玛鑫精密机械有限公司 Two section of one kind or more piece piston rod type nitrogen gas spring
CN113124082A (en) * 2021-04-25 2021-07-16 深圳市大通精密五金有限公司 Constant force nitrogen spring

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105134859A (en) * 2015-09-24 2015-12-09 上海雷瑟尔精密机械有限公司 No-voltage protection type nitrogen spring
CN105947923A (en) * 2016-07-14 2016-09-21 吉林光洋自动化液压系统有限公司 Pressure self-adjusting ejector
CN105947923B (en) * 2016-07-14 2018-05-08 吉林光洋自动化液压系统有限公司 A kind of pressure self-adjusting section top-fastener
CN108105310A (en) * 2016-11-24 2018-06-01 江苏耐玛鑫精密机械有限公司 Two section of one kind or more piece piston rod type nitrogen gas spring
CN113124082A (en) * 2021-04-25 2021-07-16 深圳市大通精密五金有限公司 Constant force nitrogen spring

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Granted publication date: 20140305

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