CN206495589U - A kind of floor spring with anti-detonation function - Google Patents
A kind of floor spring with anti-detonation function Download PDFInfo
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- CN206495589U CN206495589U CN201621260278.3U CN201621260278U CN206495589U CN 206495589 U CN206495589 U CN 206495589U CN 201621260278 U CN201621260278 U CN 201621260278U CN 206495589 U CN206495589 U CN 206495589U
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Abstract
The utility model belongs to floor spring manufacturing technology field, and in particular to a kind of floor spring with anti-detonation function.The floor spring with anti-detonation function, including body, axle center lid and tail-hood, the body, axle center lid and tail-hood constitute airtight cavity, explosion prevention function module is provided with the airtight cavity, the explosion prevention function module has the compressible closing chamber of solid air, and off-load is carried out to the airtight cavity by compressing the air in the compressible closing chamber.By using the floor spring described in the utility model with anti-detonation function, can when oil temperature is raised using the compressibility of gas there is provided a part of off-load space, lay down a part of oil pressure, make to be in lower pressure levels inside floor spring, reach anti-detonation and prevent the purpose of oil leak.
Description
Technical field
The utility model belongs to floor spring manufacturing technology field, and in particular to a kind of floor spring with anti-detonation function.
Background technology
Existing floor spring is typically all oil-containing floor spring, using hydraulic oil as buffer medium, the oil inside floor spring
By axle center lid, tail-hood, oiling lid, sealed steel ball, choke valve and some seals are enclosed in inside floor spring body.
During enabling, piston is compressed to left movement, main spring.In door opening process, the oil on the left of piston passes through single in piston
Freely flowed to valve on the right side of piston, it is very low without pressure or pressure inside floor spring.At closing time, main spring is released, main spring
Piston is promoted to move right.In door closing procedure, piston internal check valve is closed, and oil can only flow back to piston by choke valve on the right side of piston
Left side, due to being acted on by choke valve speed governing, piston can not be moved right quickly i.e. by braking cushioning effect, and is produced from piston right side
Raw operating pressure, the advantageous pressure that this operating pressure needs when being the normal speed governing of floor spring.Base area spring specification is different, table
Pressure is in 2.5Mpa or so, absolute pressure 2.6MPa.Operating pressure size and spring force on the right side of piston, piston area and speed governing are fast
Slow relevant, this pressure is controllable, because plunger shaft is regular cylindrical, so stress concentration is small, floor spring part
Intensity can meet pressure needs during normal work.
Floor spring main frame is typically mounted on 50-60mm depth below earth's surface, and upper cover plate is covered with above.The summer high temperature period,
Surface temperature can reach more than 60 degrees Celsius, even up to 70 degrees Celsius of some areas.Hydraulic oil is full of inside floor spring.I
Know that oil is incompressible, at such high temperatures, be sealed in the hydraulic oil inside floor spring because temperature rise can be produced
The very big bulbs of pressure, elevated pressure had both been present on the left of piston, and there is also on the right side of piston.This pressure reaches most in temperature
Even to exceed the pressure during normal work when high.Therefore, piston right atrial pressure can be superimposed temperature simultaneously in floor spring door closing procedure
Pressure caused by rising.Actual test and calculating are proved inside the floor spring of not explosion-proof cylinder structure, due to exhausted caused by temperature rise
16 atmospheric pressure (1.6Mpa) even more highs can be reached to pressure.Although this pressure is less than service pressure, due to ground
There is larger stress concentration spring structure feature, floor spring body head position, and detonation mostly occurs in head cavity.Oil temperature is raised
After the pressure rise brought is superimposed with operating pressure on the right side of piston, oil leak is easier at floor spring afterbody oil pocket tail-hood screw thread.For
It is that finger pressure is strong to meet pressure descriptions all inside communication custom, this specification.
Being enclosed in the rise of the oil pressure inside floor spring can bring some to adversely affect：
1st, the threaded connection locked originally fluffs, and causes seal failure to cause oil leak；
2nd, due to the inherent characteristic of casting, floor spring interior oil can be exuded to body surface, interior oil meeting as perspiring
Reduce；
3rd, serious conditions can cause floor spring body to ftracture, i.e. detonation phenomenon.
The most of not anti-detonation function of existing floor spring on the market, the leakage come due to oil pressure elevated band caused by temperature rise
Oil, on the one hand declines floor spring speed governing buffering effect, noise is sent at closing time and is rocked in zero-bit；On the other hand it is exuded to ground
The Leakage Energy of spring bumper cover upper surface can be mixed with dust on ground, become black greasy filth, both influence floor spring outward appearance, again
The appearance of the city is influenceed, the rag after wiping is not also reusable, as Harmful Waste.It may be said that, it can be seen that floor spring oil leak 90% with
On be due to caused by temperature rise.Oil can all flow out after floor spring detonation, and the failure of floor spring braking pooling feature simultaneously can also be dirty
Contaminate environment.Therefore, floor spring oil leak or detonation caused by temperature rise are floor spring industry urgent problems to be solved.
Utility model content
For problem above, the utility model proposes a kind of floor spring with anti-detonation function, by using this reality
, can using the compressibility of gas, there is provided one when oil temperature is raised with the new described floor spring with anti-detonation function
Partial relief space, lays down a part of oil pressure, makes to be in lower pressure levels inside floor spring, reaches anti-detonation and prevent oil leak
Purpose.
The utility model proposes a kind of floor spring with anti-detonation function, including body, axle center lid and tail-hood,
The body, axle center lid and tail-hood, which are constituted, is provided with explosion prevention function module, the explosion prevention function in airtight cavity, the airtight cavity
Module has the compressible closing chamber of solid air, by compressing the air in compressible closing chamber to the airtight cavity
Carry out off-load.
There is the floor spring of anti-detonation function as described above, wherein the explosion prevention function module includes having compressible envelope
The cylinder of closed chamber and the elastic film being connected with the end of the cylinder, the elastic film are used for the airtight cavity and can
Compression closing chamber is separated, and is fixed on the two ends of the cylinder, and closed cavity is constituted with the cylinder, described compressible by compressing
The airtight cavity that closing chamber is constituted to the body, axle center lid and tail-hood carries out off-load.
There is the floor spring of anti-detonation function as described above, wherein the explosion prevention function module includes having compressible envelope
The cylinder of closed chamber and the elastic film being connected with the end of the cylinder, the elastic film are used for the airtight cavity and can
Compression closing chamber is separated, and is fixed on one end of the cylinder, one end of the cylinder is sealed, by that can be pressed described in compression
The airtight cavity that contracting closing chamber is constituted to the body, axle center lid and tail-hood carries out off-load.
As described above have anti-detonation function floor spring, wherein the explosion prevention function module include oil cylinder, piston and
Spring, the piston separates space in the oil cylinder and the airtight cavity in the oil cylinder, and the spring is located at institute
The inside cavity of piston and oil cylinder composition is stated, the spring can be compressed in the presence of the piston.
There is the floor spring of anti-detonation function as described above, have and the explosion prevention function mould wherein the axle center is covered
The mounting hole that block matches, the explosion prevention function module is in the mounting hole of the axle center lid.
There is the floor spring of anti-detonation function as described above, wherein further comprising：It is located on described body sidewall
Boss, the boss has pilot hole；Matching be arranged on plug in the pilot hole, the plug offer with it is described close
The atrium of closed chamber body phase connection, for accommodating the explosion prevention function module.
There is the floor spring of anti-detonation function as described above, wherein the explosion prevention function module is fixed by back-up ring with holes
In in the mounting hole of the axle center lid or the atrium of the plug, the back-up ring with holes is by being fixed by caulking to the axle center lid
Mounting hole or the plug atrium end.
There is the floor spring of anti-detonation function as described above, wherein being provided with sealing ring between the oil cylinder and piston.
There is the floor spring of anti-detonation function as described above, wherein using spiral shell between the plug and the pilot hole
Line is connected.
There is the floor spring of anti-detonation function as described above, wherein being sealed between the plug and boss provided with plug.
Floor spring described in the utility model with anti-detonation function include body, axle center lid and tail-hood, the body,
Axle center lid and tail-hood, which are constituted, is provided with explosion prevention function module in airtight cavity, the airtight cavity, the explosion prevention function module has
The compressible closing chamber of solid air, when oil temperature is raised using the compressibility of gas there is provided a part of off-load space,
A part of oil pressure is laid down, makes to be in lower pressure levels inside floor spring, prevents detonation and the generation of oil leakage phenomenon.
Meanwhile, anti-detonation modular assembly is arranged in axle center lid or this body side surface boss hole by the utility model, is solved
The arm-tie made using Sheet Metal Forming Technology is fitted without space and limited space problem.
Brief description of the drawings
Describe the utility model in detail below in conjunction with the accompanying drawings.Pass through the detailed description made in conjunction with the following drawings, this practicality
New above-mentioned or otherwise content will be apparent and be easier to understand.In accompanying drawing：
Fig. 1 is the structural representation of the floor spring described in the embodiment of the utility model one with anti-detonation function；
Fig. 2 is the structural representation of explosion prevention function module in the embodiment of the utility model one；
Fig. 3 is the structural representation of explosion prevention function module in another embodiment of the utility model；
Fig. 4 is the structural representation of explosion prevention function module in another embodiment of the utility model；
Fig. 5 is the structural representation of explosion prevention function module in another embodiment of the utility model；
Fig. 6 is the structural representation of the floor spring described in another embodiment of the utility model with anti-detonation function；
Fig. 7 is the external structure schematic diagram of the floor spring described in Fig. 6 with anti-detonation function；
Fig. 8 is the structural representation described in Fig. 6 with the plug in the floor spring of anti-detonation function.
Each label is expressed as follows in accompanying drawing：
10：Body；
11：Spring, 12：Arm-tie, 13：Piston, 14：Axle center, 15：Oiling lid, 16：Plug,
17：Plug sealing, 18：Back-up ring with holes, 19：Boss；
20：Axle center lid；
21：Axle center lid bearing, 22：Core seat bearing；
30：Tail-hood；
31：Tail-hood oil sealing；
40：Explosion prevention function module, 41：Elastic film, 42：Cylinder, 43：Oil cylinder,
44：Piston, 45：Spring, 46：Sealing ring；
A：Head oil pocket, B：Afterbody oil pocket.
Embodiment
Describe embodiment of the present utility model in detail below in conjunction with the accompanying drawings.
Embodiment/the embodiment recorded herein is specific embodiment of the present utility model, for saying
Bright design of the present utility model, is explanatory and exemplary, should not be construed as to the utility model embodiment and this reality
With the limitation of new scope.Except the implementation exception recorded herein, those skilled in the art can also be based on the application claim
Book and specification disclosure of that are using obvious other technical schemes, and these technical schemes are included using to remembering herein
The technical scheme for making any obvious substitutions and modifications of the embodiment of load, all protection domain of the present utility model it
It is interior.
Embodiment one
As shown in figure 1, the floor spring with anti-detonation function includes body 10, axle center lid 20 and tail-hood 30, it is described
Body 10, axle center lid 20 and tail-hood 30 constitute and explosion prevention function module 40 are provided with airtight cavity, the airtight cavity, described explosion-proof
Functional module 40 has the compressible closing chamber of solid air, by compressing the air in compressible closing chamber to described close
Closed chamber body carries out off-load.
The floor spring with anti-detonation function preferentially uses membrane structure explosion prevention function module 40.It is explosion-proof in the present embodiment
Functional module 40 is in axle center lid 20 below matching mounting hole, and by back-up ring 18 with holes by explosion prevention function module 40
It is fixed in mounting hole.Back-up ring 18 with holes is fixed on to the port of axle center lid 20 by riveting again afterwards.The inside of body 10 is logical
Cross axle center lid 20, the big oil sealing of axle center lid, axle center oil sealing, oiling lid 15, oiling lid sealing ring, tail-hood 30, tail-hood oil sealing 31,
Choke valve, choke valve oil sealing, piston 13 and check valve steel ball constitute head oil pocket A and afterbody oil pocket B.Head oil pocket A and afterbody
Oil pocket B is not contacted with the external world, internal only to be connected by check valve steel ball when opening the door.
Floor spring conventional hardware is provided with the oil pocket A of head, including：Arm-tie 12, spring 11, axle center 14, axle center lid bearing 21,
In the part such as core seat bearing 22, centrifugation roller, roller steel core, bearing pin and arm-tie rivet, head oil pocket A and afterbody oil pocket B its
Hydraulic oil is full of in complementary space.
Above-mentioned part is all prior art building block in addition to explosion prevention function module 40, it should by those skilled in that art
It is known.
As shown in Fig. 2 in the present embodiment, explosion prevention function module 40 include cylinder 42 with compressible closing chamber and with institute
The connected elastic film 41 in the end of cylinder 42 is stated, the elastic film 41 is used for the airtight cavity and compressible closing chamber
Separate, be fixed on the two ends of the cylinder 42, closed cavity is constituted with the cylinder 42, by compressing the compressible closing chamber
Off-load is carried out to the airtight cavity that the body 10, axle center lid 20 and tail-hood 30 are constituted.
The elastic film 41 is the Oil-resistence Rubber Membrane with specific thicknesses, and the cylinder 42 is with specific thicknesses
Resistance to factice film supports.Elastic film 41 is coated on whole outer surfaces of cylinder 42, and the two is by closely connecting and composing one
Compressible closing chamber.In assembling, the internal automatic full atmospheric air of filling.
Axle center lid 20 is provided with the mounting hole matched with explosion prevention function module 40, and circumferentially direction is uniform for the mounting hole
The inner surface of lid 20 in axle center.Hole number is installed and is generally four or six, particular number is determined on a case-by-case basis.
In the present embodiment, the process for carrying out off-load using explosion prevention function module 40 is as follows:
Due to ambient temperature rise, the oil volume expansion in body 10, head oil pocket A and afterbody oil pocket B are enclosed in
Interior hydraulic fluid pressure rise.The air pressure being enclosed in elastic film 41 and cylinder 42 is also due to temperature is raised and increased.
Because air is compressible, oil is incompressible, and air thermal expansion and the elastic force of elastic film 41 are closed when the pressure in oil pocket is more than
During the pressure sum of generation, oil can promote the motion upwards of elastic film 41, the closing of elasticity of compression film 41 and the inside of cylinder 42
Air.Elastic film 41 is moved upwards, and the compressible closing chamber volume of elastic film 41 and the formation of cylinder 42 diminishes, and concedes off-load
Oil of the space to expansion.Finally when ambient temperature is no longer raised, poised state is reached.When reaching poised state, head
What the absolute pressure of oil pocket A and afterbody oil pocket B when floor spring does not work was superimposed in 5 atm highers, floor spring work
Pressure is also accordingly reduced.Reach the purpose of anti-detonation and oil-leakage-prevention.
When ambient temperature declines, the volume of floor spring interior oil and compressible closing chamber inner sealing volume of air by
Original state is gradually bounced back to, elastic film 41 also returns to origin-location, to carry out off-load when next temperature rise.
Embodiment two
As shown in figure 3, being another form of explosion prevention function module 40.The explosion prevention function module 40, which includes having, to press
The cylinder 42 of contracting closing chamber and the elastic film 41 being connected with the end of the cylinder 42, the elastic film 41 is used for will be described
Airtight cavity and compressible closing chamber are separated, and are fixed on one end of the cylinder 42, and one end of the cylinder 42 is sealed,
The airtight cavity constituted by compressing the compressible closing chamber to the body 10, axle center lid 20 and tail-hood 30 carries out off-load.
The elastic film 41 is the Oil-resistence Rubber Membrane with specific thicknesses, and the cylinder 42 is with specific thicknesses
Resistance to factice film supports, elastic film is close-coupled at one end of cylinder.Because the only one side of explosion prevention function module 40 uses bullet
Property film 41 sealed, during installation, elastic film 41 is arranged on the side that is in contact with oil pocket of cylinder 42.The external diameter of cylinder 42 with
The hole wall of the matching mounting hole of axle center lid 20 is fitted close, the mounting hole bottom of elastic film 41, cylinder 42 and axle center lid 20
Face is collectively forming the compressible cavity of closing.The explosion prevention function module unloading process and embodiment used in the present embodiment is one by one
Cause.
Embodiment three
As shown in figure 4, being another form of explosion prevention function module 40.Its frame mode and frame mode in embodiment two
It is similar, equally it is that one end of cylinder 42 is sealed using elastic film 41.The external diameter of cylinder 42 and axle center lid 20 are matching
Mounting hole hole wall be fitted close, the mounting hole bottom surface of elastic film 41, cylinder 42 and axle center lid 20 is collectively forming closing
Compressible cavity.
The height of the present embodiment middle cylinder body 42 has been reduced.The elastic film 41 is fixed on cylinder 42 by connector
One end.Its course of work and mounting means are identical with embodiment two.
Example IV
As shown in figure 5, the explosion prevention function module 40 includes oil cylinder 43, piston 44 and spring 45, the piston 44 is located at
In the oil cylinder 43, space in the oil cylinder 43 is separated with the airtight cavity, the spring 45 is located at the He of piston 44
The inside cavity that oil cylinder 43 is constituted, the spring 45 can be compressed in the presence of the piston 44.
Explosion prevention function module 40 in the present embodiment is loaded in the mounting hole matched on axle center lid 20 with oil cylinder, then in axle
The end of heart lid 20 is riveted to oil cylinder, in the endoporus that oil cylinder is fixed on to axle center lid 20.By oil cylinder 43, piston 44 and
The mounting hole bottom surface of axle center lid 20 forms compressible cavity.
Its specific work process is as follows：
Due to ambient temperature rise, the oil volume expansion of closing, oil pressure liter in head oil pocket A and afterbody oil pocket B
It is high.The air pressure being enclosed in oil cylinder 43 is also due to temperature is raised and increased.Because air is compressible, oil is incompressible,
When the pressure in oil pocket is more than the pressure sum for being closed air thermal expansion and the generation of the elastic force of spring 45, oil can promote piston 44
Motion, occluded air while compression spring 45 in compression cylinder 43 upwards.Piston 44 upwards move, concede off-load space to
The oil of expansion.Sealing ring 46 is provided between oil cylinder 43 and piston 44.Sealing ring 46 can be prevented in the oil pocket A of head after oil expansion
Into in oil cylinder 43.Finally when ambient temperature is no longer raised, poised state is reached.Poised state head oil pocket A and tail
Absolute pressures of the portion oil pocket B when floor spring does not work is in 4-5 atm higher, the pressure that floor spring is superimposed when working also phase
It should reduce.Reach the purpose of anti-detonation and oil-leakage-prevention.
When ambient temperature declines, the volume and the inner sealing volume of air of oil cylinder 43 of floor spring interior oil are gradually recovered
Original state, piston 44 returns to origin-location under the effect of spring force 45.
Embodiment five
As shown in Fig. 6, Fig. 7, Fig. 8, the present embodiment further comprises the boss 19 being located on the side wall of body 10, institute
Boss 19 is stated with pilot hole；Matching be arranged on plug 16 in the pilot hole, the plug 16 offer with it is described close
The atrium of closed chamber body phase connection, for accommodating the explosion prevention function module 40.
In the atrium that explosion prevention function module 40 is loaded to plug 16, explosion prevention function module 40 is consolidated using back-up ring 18 with holes
In the atrium for being scheduled on plug 16.Back-up ring 18 with holes and plug 16 are by the way of riveting, opening of the riveting location in plug 16
The end of chamber.Boss 19 is provided with the pilot hole matched with plug 16, and plug 16 is arranged in the pilot hole of boss 19.
Plug 16, which has, has internal thread in external screw thread, pilot hole, plug 16, which is connected through a screw thread, to be fixed in pilot hole
Portion.To ensure the sealing of plug 16 and pilot hole, in the outer surface of plug 16 provided with plug sealing 17.
The internal plug 16 for having installed explosion prevention function module 40 is loaded in pilot hole, screw thread is twisted, pilot hole is carried out
Closing.Then two oil closed cavities, head oil pocket A and afterbody oil pocket B are just formed inside floor spring.Wherein, explosion prevention function mould
The structure of block 40 can use any one in embodiment one, embodiment two, embodiment three, example IV, its mounting means
It is identical with correspondence embodiment with the course of work.
It should be noted that each embodiment above by reference to described by accompanying drawing is only to illustrate the utility model rather than limit
Scope of the present utility model is made, it will be understood by those within the art that, do not departing from spirit of the present utility model and model
The modification carried out on the premise of enclosing to the utility model or equivalent substitution, all should cover within the scope of the utility model.
In addition, signified outer unless the context, the word occurred in the singular includes plural form, and vice versa.In addition, except non-specifically
Explanation, then all or part of of any embodiment can combine all or part of of any other embodiment to use.
Claims (11)
1. a kind of floor spring with anti-detonation function, it is characterised in that including body, axle center lid and tail-hood, the body, axle
Heart lid and tail-hood constitute and explosion prevention function module are provided with airtight cavity, the airtight cavity, and the explosion prevention function module has interior
The compressible closing chamber of air is filled up in portion, and off-load is carried out to the airtight cavity by compressing the air in compressible closing chamber.
2. the floor spring according to claim 1 with anti-detonation function, it is characterised in that the explosion prevention function module bag
The cylinder with compressible closing chamber and the elastic film being connected with the end of the cylinder are included, the elastic film is used for institute
State airtight cavity and compressible closing chamber is separated, be fixed on the two ends of the cylinder, constitute closed cavity with the cylinder, pass through
Compress the airtight cavity progress off-load that the compressible closing chamber is constituted to the body, axle center lid and tail-hood.
3. the floor spring according to claim 1 with anti-detonation function, it is characterised in that the explosion prevention function module bag
The cylinder with compressible closing chamber and the elastic film being connected with the end of the cylinder are included, the elastic film is used for institute
State airtight cavity and compressible closing chamber is separated, be fixed on one end of the cylinder, one end of the cylinder is sealed, lead to
The airtight cavity that compressible closing chamber described in overcompression is constituted to the body, axle center lid and tail-hood carries out off-load.
4. the floor spring according to claim 1 with anti-detonation function, it is characterised in that the explosion prevention function module bag
Oil cylinder, piston and spring are included, the piston separates space in the oil cylinder and the airtight cavity in the oil cylinder,
The inside cavity that the spring is constituted located at the piston and oil cylinder, the spring can be pressed in the presence of the piston
Contracting.
5. the floor spring according to claim 1 with anti-detonation function, it is characterised in that the axle center cover with
The mounting hole that the explosion prevention function module matches, the explosion prevention function module is in the mounting hole of the axle center lid.
6. the floor spring according to claim 1 with anti-detonation function, it is characterised in that further comprise：It is located at institute
The boss on this body sidewall is stated, the boss has pilot hole；Matching is arranged on the plug in the pilot hole, the plug
The atrium being connected with the airtight cavity is offered, for accommodating the explosion prevention function module.
7. the floor spring according to claim 5 with anti-detonation function, it is characterised in that the explosion prevention function module is led to
Cross back-up ring with holes to be fixed in the mounting hole of the axle center lid, the back-up ring with holes is by being fixed by caulking to the peace of the axle center lid
Fill the end in hole.
8. the floor spring according to claim 4 with anti-detonation function, it is characterised in that between the oil cylinder and piston
Provided with sealing ring.
9. the floor spring according to claim 6 with anti-detonation function, it is characterised in that the plug and the assembling
Using threaded connection between hole.
10. the floor spring according to claim 6 with anti-detonation function, it is characterised in that the plug and boss it
Between provided with plug sealing.
11. the floor spring according to claim 6 with anti-detonation function, it is characterised in that the explosion prevention function module
In the atrium that the plug is fixed on by back-up ring with holes, the back-up ring with holes is by being fixed by caulking to the opening of the plug
The end of chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621260278.3U CN206495589U (en) | 2016-11-21 | 2016-11-21 | A kind of floor spring with anti-detonation function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621260278.3U CN206495589U (en) | 2016-11-21 | 2016-11-21 | A kind of floor spring with anti-detonation function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206495589U true CN206495589U (en) | 2017-09-15 |
Family
ID=59800051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621260278.3U Active CN206495589U (en) | 2016-11-21 | 2016-11-21 | A kind of floor spring with anti-detonation function |
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| Country | Link |
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| CN (1) | CN206495589U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110821328A (en) * | 2019-10-29 | 2020-02-21 | 马桂明 | Floor spring with high door opening and closing stability |
| CN111852646A (en) * | 2020-07-09 | 2020-10-30 | 唐秦 | Shell for air supercharging device and manufacturing method thereof |
-
2016
- 2016-11-21 CN CN201621260278.3U patent/CN206495589U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110821328A (en) * | 2019-10-29 | 2020-02-21 | 马桂明 | Floor spring with high door opening and closing stability |
| CN110821328B (en) * | 2019-10-29 | 2021-01-19 | 佛山市顺德区象力五金弹簧有限公司 | Floor spring with high door opening and closing stability |
| CN111852646A (en) * | 2020-07-09 | 2020-10-30 | 唐秦 | Shell for air supercharging device and manufacturing method thereof |
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