CN209509873U - A kind of twin-tub floor spring with anti-detonation function - Google Patents

Abstract

The utility model embodiment discloses a kind of twin-tub floor spring with anti-detonation function, with the airtight cavity for being marked with hydraulic oil, the pulling plate component and a pair of of first piston positioned at its both ends are equipped in the airtight cavity, connect a pair of of pull rod of this pair of of first piston and pulling plate component, the first spring of a pair being nested on this pair of of pull rod, pressure balance module is equipped in airtight cavity, the pressure balance module is located at pulling plate component, the head of a pair of of pull rod, in space defined by this three of head of a pair of first spring, pressure balance module has the compressible closing chamber of solid air, off-load is carried out to airtight cavity by compressing the air in compressible closing chamber.By adding pressure balance module in utilizable space inside existing twin-tub floor spring, via the pressure balance module solve the problems, such as existing twin-tub floor spring because oil temperature raising cause expansion eventually lead to easy oil leak even detonation.

Description

A kind of twin-tub floor spring with anti-detonation function

Technical field

The utility model belongs to floor spring technical field, and in particular to a kind of twin-tub floor spring with anti-detonation function.

Background technique

Twin-tub floor spring has two springs being set side by side, and can be evenly distributed to spring force on two springs, on ground In the case of spring reaches identical shutdown torque, spring diameter and line footpath size can be done small, i.e. the ontology of twin-tub floor spring is thick Spend it is all thinner than common Single spring floor spring, therefore twin-tub floor spring be typically used in floor spring installation ground plane apertures depth it is restricted Occasion.

In order to reach most thin fitting depth, twin-tub floor spring height of head direction size is all than common Single spring floor spring It is thin, it is contemplated that Strength Safety, floor spring bulk material often use trade mark cast iron higher than common Single spring floor spring.However, Because floor spring bulk material is relatively thin, the summer high temperature period, the hydraulic oil being sealed in inside floor spring is very big since temperature rise can generate The bulbs of pressure, also, in floor spring door closing procedure first piston generate pressure can be superimposed pressure caused by temperature rise simultaneously, such as This, is easy to cause floor spring interior oil that can be exuded to floor spring body surface as perspiring and forms oil leak, meeting under serious conditions Floor spring ontology is caused to crack, i.e. detonation phenomenon.

In addition, the twin-tub floor spring of seavan inner outlet is encapsulated in, at sea in transportational process, if encountering high temperature day Gas, packaging the temperature inside the box can be raised to 70 degree or more, under the hot environment, be sealed in the hydraulic oil inside floor spring due to temperature rise The very big bulbs of pressure can be generated, the pressure effect under, some floor springs are even less than harbour just oil leak, cause bullet The product quality of spring declines, the final international trade for influencing floor spring.

By upper, because twin-tub ground spring structure size is restricted, wall thickness is relatively thin, leads to compared to common Single spring bullet The detonation risk of spring, twin-tub floor spring is bigger.

For the Leakage of twin-tub floor spring, solution common at present is control floor spring filling oil mass, for example, Some producers control filling oil mass does so the pressure that can reduce oil expansion to a certain extent, but band simultaneously in 90-95% Carry out problem newly, i.e., since the oil in floor spring is not filled it up with, causes floor spring shutdown idle stroke to increase, floor spring is controllably closed the door Angular range reduces.

Although disclosing a kind of ground with anti-detonation function in the authorization text of Patent No. 201621260278.3 Spring, still, this technical solution are only applicable to Single spring floor spring, are not particularly suited for twin-tub floor spring.In addition, at home and abroad The technical side of the Leakage to solve twin-tub floor spring is showed no on the twin-tub floor spring product and patent document of sale Case.

In conclusion floor spring oil leak or detonation caused by temperature rise are twin-tub floor spring industry urgent problems to be solved.

Utility model content

The utility model embodiment is designed to provide a kind of twin-tub floor spring with anti-detonation function, existing double Pressure balance module is added in utilizable space inside cylinder floor spring, provides a part of off-load via the pressure balance module Space is made with laying down a part of oil pressure in lower pressure levels inside twin-tub floor spring, to solve existing twin-tub floor spring The problem of causing expansion to eventually lead to easy oil leak or even detonation because of oil temperature raising.

To achieve the above object, a kind of twin-tub floor spring with anti-detonation function of the utility model embodiment is specific Technical solution are as follows: a kind of twin-tub floor spring with anti-detonation function has the airtight cavity for being marked with hydraulic oil, the airtight cavity The interior pulling plate component for being equipped with its both ends of living apart and a pair of of first piston connect the one of this pair of of first piston and the pulling plate component To pull rod, the first spring of a pair being nested on this pair of of pull rod, which is characterized in that flat equipped with pressure in the airtight cavity Weigh module, which is located at the head of the pulling plate component, the head of the pair of pull rod, the pair of first spring In space defined by this three of portion, the pressure balance module has the compressible closing chamber of solid air, passes through pressure The air to contract in compressible closing chamber carries out off-load to the airtight cavity.

It preferably, further include the floor spring ontology to form the airtight cavity, the top of the floor spring ontology Pressure balance module mounting hole is offered, projection of the pressure balance module mounting hole in the bottom of the floor spring ontology is fallen into In the space as defined by the pulling plate component, the head of the pair of pull rod, this three of the head of the pair of first spring.

Preferably, the pair of pull rod is symmetrically spaced setting, institute along the length direction of floor spring in the airtight cavity It states pressure balance module mounting hole to be located on the line of symmetry of the pair of pull rod, the pressure balance module mounting hole is with described The distance between axle center of spring meets: the floor spring in zero degree position, put down close to the pressure by the pulling plate component Weigh the edge of module side, the head of the pair of first spring, the pair of pull rod head respectively with the pressure balance mould Do not interfere the periphery of block.

Preferably, the diameter of the periphery of the pressure balance module meets: described in the pair of pull rod motion process The head of a pair of of pull rod and the periphery of the pressure balance module are not interfered.

Preferably, the side close to the pressure balance module of the pulling plate component offers and the pressure balance mould The periphery of block matches, the escape groove of periphery to avoid the pressure balance module.

Preferably, the pressure balance module includes oil cylinder, forms and the airtight cavity in the oil cylinder and with it The second piston of the cavity separated is placed in the intracorporal second spring of the chamber, which can be in the work of the second piston It is compressed under.

Preferably, the pressure balance module mounting hole is counterbore, and the top of the pressure balance module has flange, institute Pressure balance module is stated to be arranged in the pressure balance module mounting hole via the flange.

Preferably, the first sealing ring is equipped between the pressure balance module and the pressure balance module mounting hole.

Preferably, the second sealing ring is equipped between the second piston and the oil cylinder.

Preferably, the pulling plate component includes upper arm-tie and lower pulling plate, and it is arc-shaped to offer cross section in the upper arm-tie Upper arm-tie gap, lower pulling plate gap corresponding with the upper arm-tie gap is offered on the lower pulling plate, by the two gap Form the escape groove.

A kind of twin-tub floor spring with anti-detonation function of the utility model embodiment is: in existing twin-tub The pressure balance module is added in utilizable space inside floor spring, solves existing twin-tub via the pressure balance module The problem of causing expansion to eventually lead to easy oil leak or even detonation because of oil temperature raising of floor spring is that floor spring is transported in the export trade Very long container high-temperature baking is amenable to during defeated and provides solution, and there is huge market value.Meanwhile using this Kind technical solution, it is smaller to the structural modification of existing twin-tub floor spring, it is applied widely.

Detailed description of the invention

Fig. 1 is the top view of the twin-tub floor spring of the utility model embodiment；

Fig. 2 be Fig. 1 in A-A to cross-sectional view；

Fig. 3 is the cross-sectional view of B-B direction in Fig. 2；

Fig. 4 is that the twin-tub floor spring of the utility model embodiment opens the door to the structural schematic diagram of certain angle；

Fig. 5 is the cross-sectional view of the pressure balance module of the twin-tub floor spring of the utility model embodiment；

Fig. 6 is the side view of the pressure balance module of the twin-tub floor spring of the utility model embodiment；

Fig. 7 is the signal under the pressure balance module of the twin-tub floor spring of the utility model embodiment is in running order Figure；

Fig. 8 is the structural schematic diagram of the pulling plate component of the twin-tub floor spring of the utility model embodiment.

Specific embodiment

In order to be better understood by the purpose of this utility model, structure and function, with reference to the accompanying drawing, to the utility model A kind of twin-tub floor spring with anti-detonation function does further detailed description.

As shown in Figure 1-Figure 3, it is shown as a kind of twin-tub floor spring of the utility model embodiment, which includes Floor spring ontology 1, axle center lid 4, seal closure 11 and sealed steel ball 14, the floor spring ontology 1, axle center lid 4, seal closure 11 and sealing Steel ball 14 constitutes an airtight cavity, is full of hydraulic oil in the airtight cavity.

The pulling plate component 3 of closely spring head setting is installed in the airtight cavity, close to floor spring tail portion and A pair of of first piston 8 arranged side by side corresponds and connect pulling plate component 3 and first piston 8 with this pair of of first piston 8 A pair of of pull rod 6, the first spring 5 for corresponding and being sleeved on the pull rod 6 with this pair of of pull rod 6.Specifically, in single drawing The head of bar 6 is formed with rod head 61, referring to shown in Fig. 3 and Fig. 4, main body of the rod head 61 relative to pull rod Part is in bulging shape, which links together with pulling plate component 3 via pulling plate screw 7.The tail end of single pull rod 6 passes through It is connected by first piston pin 9 with corresponding first piston 8.Check valve steel ball is each configured on aforementioned a pair of of first piston 8 10.The axle center of twin-tub floor spring is mounted in floor spring main body 1 via core seat bearing 2.In addition, in the airtight cavity also It is equipped with close to aft mounted a pair of of the rate controlling needle 13 of floor spring.

The airtight cavity is separated into head cavity and tail portion cavity via the pair of first piston 8, the two chambers Body is not contacted with the external world, is only connected to by aforementioned check valve steel ball 10 when opening the door inside the two.

Above-mentioned component is prior art building block, it should well known to those skilled in the art.

The main distinction of twin-tub floor spring and the prior art described in the present embodiment are as follows: pressure is equipped in the airtight cavity Balance module 12, the pressure balance module 12 be located at pulling plate component 3, a pair of of rod head 61, a pair of first spring 5 head this In space defined by three, which has the compressible closing chamber of solid air, can by compression The air compressed in closing chamber carries out off-load to the airtight cavity.

Specifically, the top of floor spring ontology 1 offers a pressure balance module mounting hole 1a, pressure balance module peace Projection of the hole 1a in the bottom of floor spring ontology 1 is filled to fairly fall in by pulling plate component 3, a pair of of rod head 61, a pair of first bullet In space defined by this three of the head of spring 5, the top of pressure balance module 12 is via pressure balance module mounting hole 1a It is mounted on floor spring ontology 1, major part is placed in the airtight cavity.In the present embodiment, pressure balance module mounting hole 1a is counterbore, and the top (tops of specially following oil cylinders 121) of pressure balance module 12 has the flange being circumferentially arranged along it 127, pressure balance module 12 is arranged in pressure balance module mounting hole 1a via the flange 127.

Further, first is equipped with both pressure balance module mounting hole 1a places of matching in pressure balance module 12 Sealing ring 122.

Further, in order to further illustrate the specific location of pressure balance module mounting hole 1a, by floor spring axle center Place is defined as the origin of X-Y vertical coordinate system, by by the origin and along Fig. 1, left and right directions passes through the pair of pull rod 6 The straight line of line of symmetry is defined as X-axis, will be positioned as Y-axis by origin and the straight line vertical with the X-axis, in the present embodiment, pressure Balance module mounting hole 1a is located in the X-axis on the right side of Y-axis, and center is L at a distance from origin, the occurrence of distance L according to Design principle is not interfered to determine, specifically, distance L is can guarantee floor spring 3 right end of pulling plate component, one in zero degree position It is outer with following oil cylinders 121 of pressure balance module 12 respectively to the left end of the first spring 5, the rod head 61 of a pair of of pull rod 6 It subject to all 121a do not interfere, so, it is possible that the periphery 121a of oil cylinder 121 is avoided to interfere 3 right end of pulling plate component, a pair first The left end of spring 5, this three of rod head 61 proper motion in the floor spring course of work, and then guarantee that floor spring is normally transported Row.

Further, the diameter design of the periphery 121a of the oil cylinder 121 of pressure balance module 12 should be to be moved through in pull rod 6 Subject to the periphery 121a of Cheng Zhongyu oil cylinder 121 does not interfere, as a result, in 6 motion process of pull rod, the outer of oil cylinder 121 can be avoided All 121a interfere both 61 proper motion of rod head, rod head 61 and periphery 121a of oil cylinder 121 collide, wear Deng, and then guarantee the normal operation of floor spring.

In the present embodiment, referring to shown in Fig. 2-Fig. 4,121 present position of oil cylinder of pressure balance module 12 is just by pulling plate The right side of component 3, the left side of two the first springs 5 and this three of rod head 61 surround, and do not interfere design according to above-mentioned Principle, the present embodiment allow oil expansion maximum volume that can be 3.5mL.

It further, is the periphery 121a of following oil cylinders 121 of guarantee pressure balance module 12 and the right end of pulling plate component 3 Do not interfere, referring to shown in Fig. 8, the right end of pulling plate component 3 offers escape groove 3a, and specifically, pulling plate component 3 includes from top to bottom Sequentially connected upper arm-tie 31, cam, lower pulling plate 32, cam be equipped with camshaft 33, the upper journal of the camshaft 33 with it is upper The upper arm-tie waist hole of pulling plate 31 matches, and the lower part axle journal of camshaft 33 is matched with the lower pulling plate waist hole of lower pulling plate 32, upper The right end of pulling plate 31 offers the arc-shaped upper arm-tie gap 311 in cross section, and offering cross section in the right end of lower pulling plate 32 is in The lower pulling plate gap 321 of arc, the size of the two gap is identical, opens up position and keeps in the up and down direction of pulling plate component 3 Alignment, collectively forms escape groove 3a of the present invention by aforementioned upper arm-tie gap 311, lower pulling plate gap 321.

Referring to shown in figure 5-8, in the present embodiment, pressure balance module 12 includes oil cylinder 121, is placed in the oil cylinder 121 Second piston 125, via the second piston 125 space in the oil cylinder 121 is separated into and to be connected to the airtight cavity The first cavity V1 and second cavity V2 completely separated with the airtight cavity, is connected in second cavity V2 equipped with both ends Second spring 124 between the top end face and second piston 125 of oil cylinder 121, the second spring 124 can be in second pistons 125 Under the action of compressed.Resilient key 126 is equipped in 125 lower end of second piston.

Be equipped with the second sealing ring 123 between 121 inner wall of second piston 125 and oil cylinder, the bottom of oil cylinder 121 be equipped with into Oil groove 121b.Wherein, the first cavity V1 is communicated via oil-feed tank 121b with the airtight cavity, constitutes this reality by the second cavity V2 The example compressible closing chamber is applied, the second cavity V2 realization is compressed by second piston 125, the airtight cavity is unloaded Lotus.

Its specific work process is as follows:

Since ambient temperature increases, it is enclosed in the volume expansion of the intracorporal oil of the closed chamber, then the closed chamber Intracorporal oil pressure increases.The air pressure in oil cylinder 121 (specially the second cavity V2) is sealed in also due to temperature liter It is high and increase.Since air is compressible, oil is incompressible, when the intracorporal oil pressure of the closed chamber is greater than quilt in the second cavity V2 When the sum of the pressure that occluded air thermal expansion and 124 elastic force of second spring generate, the intracorporal oil of closed chamber is via oil-feed tank 121b enters in the first cavity V1 and second piston 125 is pushed to move upwards, and compresses second spring 124 via second piston 125 While compress occluded air in the second cavity V2.Second piston 125 moves upwards, make the second cavity V2 volume reduce and The volume of first cavity V1 increases, and thus concedes off-load space for the intracorporal expansion oil of the closed chamber.Utilize the second sealing ring 123 can prevent from entering in the second cavity after oil expansion in the airtight cavity.

Pressure and the intracorporal pressure of the closed chamber finally when ambient temperature no longer increases, in the second cavity V2 The two reaches equilibrium state, and in the equilibrium situation, the intracorporal pressure of the closed chamber of floor spring can be reduced accordingly, in turn Achieve the purpose that oil-leakage-prevention and anti-detonation.

When ambient temperature decline, the volume and oil cylinder 121 of the airtight cavity interior oil of floor spring are (specially Second cavity V2) inner sealing volume of air is gradually recovered original state, then and second piston 125 is in floor spring internal negative pressure and second Origin-location is restored under the elastic force effect of spring 124.

Therefore technical solution described in the utility model, inside the existing twin-tub floor spring in utilizable space Add pressure balance module 12, via the pressure balance module 12 solve existing twin-tub floor spring because oil temperature raising cause to expand The problem of eventually leading to easy oil leak is amenable to very long container high-temperature baking for floor spring in export trade transportational process and mentions Solution has been supplied, there is huge market value.Meanwhile using this technical solution, to the structure of existing twin-tub floor spring Change is smaller, applied widely.

In addition, in the above-described embodiments, pressure balance module 12 uses Fig. 5-structure shown in Fig. 7, however not limits to In this, the purport of the utility model is to protect: the pressure balance module 12 is located at the pulling plate component 3, the pair of drawing In space defined by the head of plate 6, this three of the head of the pair of first spring 5, and for pressure balance module 12 Specific structure is simultaneously not specifically limited.

For example, Patent No. also can be used other than using structure shown in Fig. 5-Fig. 7 in pressure balance module 12 In 201621260278.3 authorization text it is any in Figure of description 2- Fig. 5 shown in structure, be detailed in the patent authorization text This, because this part is the prior art, therefore this will not be repeated here.

It should be noted that unless otherwise indicated, technical term or scientific term used in this application should be this reality The ordinary meaning understood with novel one of ordinary skill in the art.

In the description of the present application, it is to be understood that term " center ", " length ", "upper", "lower", "front", "rear", The orientation or positional relationship of the instructions such as "left", "right", "top", "bottom" "inner", "outside", " axial direction ", " radial direction ", " circumferential direction " be based on Orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than instruction or dark Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair The limitation of the utility model.

In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply relatively important Property or implicitly indicate the quantity of indicated technical characteristic.

In this application unless specifically defined or limited otherwise, the terms such as term " installation ", " connection ", " fixation " are answered It is interpreted broadly, for example, it may be being fixedly connected, may be a detachable connection, or is integral；It can be mechanical connection, It can be electrical connection；It can be directly connected, the company inside two elements can also be can be indirectly connected through an intermediary Logical or two elements interaction relationship.For the ordinary skill in the art, can understand as the case may be The concrete meaning of above-mentioned term in the present invention.

Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new The range of each embodiment technical solution of type, should all cover in the claim of the utility model and the range of specification. Especially, as long as structural conflict is not present, items technical characteristic mentioned in the various embodiments can combine in any way Get up.The utility model is not limited to specific embodiment disclosed herein, but including falling within the scope of the appended claims All technical solutions.

Claims (10)

1. a kind of twin-tub floor spring with anti-detonation function has the airtight cavity for being marked with hydraulic oil, sets in the airtight cavity There is the pulling plate component (3) at its both ends of living apart and a pair of of first piston (8), connects this pair of of first piston (8) and the pulling plate group A pair of of pull rod (6) of part (3), the first spring of a pair (5) being nested on this pair of of pull rod (6), which is characterized in that

Pressure balance module (12) are equipped in the airtight cavity, which is located at the pulling plate component (3), the head of the pair of pull rod (6), in space defined by this three of the head of the pair of first spring (5),

The pressure balance module (12) has the compressible closing chamber of solid air, by compressing in compressible closing chamber Air to the airtight cavity carry out off-load.

2. twin-tub floor spring according to claim 1, which is characterized in that further include the institute to form the airtight cavity Floor spring ontology (1) is stated, offers pressure balance module mounting hole (1a), the pressure balance at the top of the floor spring ontology (1) Projection of the module mounting hole (1a) in the bottom of the floor spring ontology (1) is fallen by the pulling plate component (3), the pair of drawing In space defined by the head of bar (6), this three of the head of the pair of first spring (5).

3. twin-tub floor spring according to claim 1 or 2, which is characterized in that the pair of pull rod (6) is in the closed chamber It is symmetrically spaced setting along the length direction of floor spring in vivo, the pressure balance module mounting hole (1a) is located at the pair of pull rod (6) on line of symmetry,

The distance between axle center of the pressure balance module mounting hole (1a) and the floor spring meets: the floor spring is zero When spending position, edge, the pair of first spring close to pressure balance module (12) side of the pulling plate component (3) (5) do not interfere periphery (121a) of the head on head, the pair of pull rod (6) respectively with the pressure balance module (12).

4. twin-tub floor spring according to claim 1 or 2, which is characterized in that the periphery of the pressure balance module (12) The diameter of (121a) meets: in the pair of pull rod (6) motion process, the head of the pair of pull rod (6) and the pressure Do not interfere the periphery (121a) of balance module (12).

5. twin-tub floor spring according to claim 1, which is characterized in that the close pressure of the pulling plate component (3) The side of balance module (12), which is offered, to be matched with the periphery (121a) of the pressure balance module (12), is described to avoid The escape groove (3a) of the periphery (121a) of pressure balance module (12).

6. twin-tub floor spring according to claim 1, which is characterized in that the pressure balance module (12) includes oil cylinder (121), it is set in the oil cylinder (121) and forms the second piston (125) of the cavity separated with the airtight cavity with it, be placed in The intracorporal second spring of the chamber (124), the second spring can be compressed under the action of the second piston (125).

7. twin-tub floor spring according to claim 2, which is characterized in that the pressure balance module mounting hole (1a) is heavy The top in hole, the pressure balance module (12) has flange (127), and the pressure balance module (12) is via the flange (127) setting is in the pressure balance module mounting hole (1a).

8. the twin-tub floor spring according to claim 2 or 7, which is characterized in that the pressure balance module (12) with it is described The first sealing ring (122) are equipped between pressure balance module mounting hole (1a).

9. twin-tub floor spring according to claim 6, which is characterized in that the second piston (125) and the oil cylinder (121) the second sealing ring (123) are equipped between.

10. twin-tub floor spring according to claim 5, which is characterized in that the pulling plate component (3) includes upper arm-tie (31) With lower pulling plate (32), the arc-shaped upper arm-tie gap (311) in cross section, the lower pulling plate are offered on the upper arm-tie (31) (32) lower pulling plate gap (321) corresponding with upper arm-tie gap (311) is offered on, by the two gap form described in keep away It allows slot (3a).