CN204379148U - There is the hydraulic rotary damper of overload protection - Google Patents
There is the hydraulic rotary damper of overload protection Download PDFInfo
- Publication number
- CN204379148U CN204379148U CN201520034633.4U CN201520034633U CN204379148U CN 204379148 U CN204379148 U CN 204379148U CN 201520034633 U CN201520034633 U CN 201520034633U CN 204379148 U CN204379148 U CN 204379148U
- Authority
- CN
- China
- Prior art keywords
- oil
- oil pocket
- rotating shaft
- sealing portion
- Prior art date
- 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.)
- Active
Links
Landscapes
- Fluid-Damping Devices (AREA)
Abstract
There is the hydraulic rotary damper of overload protection, comprise the housing being provided with oil pocket, one with scratching the rotating shaft sealing of oily blade in oil pocket, inner walls is provided with at least one oil removal convex tendon, described oil pocket is separated at least one high-voltage oil cavity and a low pressure oil pocket by blade and the cooperation of oil removal convex tendon, the oil sealing portion that oily passage is crossed in the oily passage of mistake of a connection high-voltage oil cavity and low pressure oil pocket and removable opening and closing is provided with in housing, the elastomer that oil sealing portion and is limited in oil pocket outside coordinate or oil sealing portion this be made as elastomeric material, when damper overload uses, oil sealing portion moves by oil pressure effect and makes the generation elastic deformation of elastomer pressurized or oil sealing portion from experiencing oil pressure effect generation elastic deformation, cross oily passage open or open more to make damping oil quickly through.By regulating the elastomeric pretightning force being limited in oil pocket outside and then realizing, to the adjustment of damper overload load, without the need to dismantling damper, to regulate from outside, simple, convenient.
Description
Technical field
The utility model relates to water-closet bowl cover plate and to fall slowly buffering damper, particularly a kind of hydraulic rotary damper with overload protection.
Background technology
The damper of existing lavatory lid mostly adopts hydraulic damping mechanism to realize damping function, realize when cover plate is opened light by the oily passage of mistake arranging gradual change in damper, slowly fall during closedown quiet function, and the type damper decreases toilet to a certain extent and to live the noise brought to people.
But, people are in use cover plate process, often due to the emergency degree of concrete condition, the work of pressure damper need be carried out to cover plate in very short time range, hydraulic coupling suffered by such damper inner body is normal operating condition several times even tens times often, damper inside is in overload, cause the possibility of the inefficacy increasing damping mechanism to a certain extent, light then damping shortens fatigue life, shorten problem this fatigue life to be difficult in a short time find, but the rear damper using certain time limit then can premature failure, or heavy then damper inner body directly ruptures and causes damper immediately to lose efficacy.
Utility model content
For solving the problem; the utility model is intended to propose a kind of hydraulic rotary damper with overload protection; make it can answer the motion state of cover plate, automatically regulate hydraulic pressure, realize the hydraulic pressure operated within range at hydraulic pressure that is specified or that set or setting, avoid it damage because hydraulic pressure overload or lost efficacy.
For reaching above-mentioned purpose, the utility model provides a kind of hydraulic rotary damper with overload protection, comprise the housing being provided with oil pocket, one with scratching the rotating shaft sealing of oily blade in oil pocket, inner walls is provided with at least one oil removal convex tendon, described oil pocket is separated at least one high-voltage oil cavity and a low pressure oil pocket by described blade and the cooperation of oil removal convex tendon, it is characterized in that: in described housing, be provided with the oil sealing portion that oily passage or modified oily channel sized are crossed in the oily passage of mistake of a connection high-voltage oil cavity and low pressure oil pocket and removable opening and closing, described oil sealing portion coordinates with an elastomer being limited in oil pocket outside or oil sealing portion is originally made as elastomeric material, when damper overload uses, oil sealing portion moves by oil pressure effect and makes the generation elastic deformation of elastomer pressurized or oil sealing portion from experiencing oil pressure effect generation elastic deformation, now cross oily passage open or open more to make damping oil quickly through.
Described oil pocket end is provided with a connection oil pocket inside and crosses oil hole with outside, described oil sealing portion be shell end arrange one axial slip break-make can cross the valve plate of oil hole, valve plate pastes when touching oil pocket end and sealed oil hole, valve plate is away from oil pocket end during opened oil hole, the oily passage of the mistake being communicated with high-voltage oil cavity and low pressure oil pocket described in being formed between valve plate with oil pocket end, shell end connects a locating part, and described elastomer top is pressed between valve plate and locating part.
Distance between described locating part and valve plate is adjustable, to make the adjustment that elastomeric pretightning force is adjustable and then realize damper overload load.
Described oil pocket bottom is provided with a dividing plate, and described oil hole of crossing is arranged on described dividing plate.
The blade tip of described rotating shaft is provided with a bulge loop be rotatably assorted with oil pocket opening, and blade radial and oil pocket inwall paste and touch, and blade bottom end face and dividing plate paste and touch; Oil removal convex tendon bottom and dividing plate is one-body molded is fixed in housing, oil removal convex tendon top and bulge loop medial surface paste and touch.
What described oil removal convex tendon bottom was provided with its both sides of connection crosses oil groove, and a step is established in side, oil removal convex tendon bottom, and valve plate contraposition step place is provided with to fit with step side and closed oil groove or the valve block away from opened oil groove; During rotating shaft undamped rotation, damping oil passed through oil groove rush to summit valve block with cross oil groove be separated, during rotating shaft damping rotary oil pocket sealing type pressure promote valve block be close to oil groove.
Described damper also comprises the gland that is installed in shell end, the oily channel setting of mistake of described connection high-voltage oil cavity and low pressure oil pocket is between rotating shaft and inner walls, described oil sealing portion is arranged in rotating shaft, rotating shaft can slide axially to make the opening and closing of oil sealing portion cross the size of oily passage or modified oily passage between gland and oil pocket, and described elastomer axially top is pressed between gland and rotating shaft.
Described gland is adjustable to be installed in shell end, by regulating the overload load of distance adjustable elastic body pretightning force between gland and rotating shaft and then damping adjusting device.
The blade tip of described rotating shaft is provided with a bulge loop be rotatably assorted with oil pocket opening, and blade radial and oil pocket inwall directly or indirectly paste tactile, and blade bottom end face and housing bottom paste and touch; Oil removal convex tendon bottom and oil pocket bottom face are fixed, and oil removal convex tendon top and bulge loop medial surface paste and touch; Described elastomer axially top is pressed between gland and bulge loop lateral surface.
On described blade radial, attaching has swingable regulating part, and described regulating part and oil pocket inwall and oil pocket bottom face paste and touch.
Described elastomer is elastic caoutchouc or spring; The elastomer that the utility model preferentially adopts is elastic caoutchouc.
The beneficial effects of the utility model are:
(1) by arranging oil sealing portion, the elastomer that oil sealing portion and is limited in oil pocket outside coordinate or oil sealing portion this be made as elastomeric material, when damper overload uses, oil sealing portion moves by oil pressure effect and makes the generation elastic deformation of elastomer pressurized or oil sealing portion from experiencing oil pressure effect generation elastic deformation, oily passage was opened or opens more to make damping oil quick, the pressure maintaining valve forming restriction oil pocket oil pressure like this, rotating shaft is made to be operated in the oil pocket oil pressure range of restriction or setting, make the utility model when damper overload work, stablize oil pressure in oil pocket to avoid the parts in oil pocket excessive pressure damages damper,
(2) oil sealing portion be shell end arrange one axial slip break-make can cross the valve plate of oil hole, valve plate pastes when touching oil pocket end and sealed oil hole, and valve plate is away from the opened oil hole in oil pocket end; Or oil sealing portion is arranged in rotating shaft, rotating shaft can slide axially to make the opening and closing of oil sealing portion cross the size of oily passage or modified oily passage between gland and oil pocket, and structure is simple, designs ingenious.
(3) by making the distance between locating part and valve plate adjustable or make the distance between gland and rotating shaft adjustable, can realize regulating and then realize the adjustment to damper overload load to the elastomeric pretightning force being limited in oil pocket outside, simply easy to adjust, and without the need to dismantling damper, directly can regulate locating part or gland from outside, simple, convenient.
Accompanying drawing explanation
Fig. 1 is the three-dimensional assembly structure decomposing schematic representation of embodiment one the utility model.
Fig. 2 is the three-dimensional assembly structure decomposing schematic representation of embodiment one the utility model housing rear end and valve plate, elastomer and nut.
Fig. 3 is the oil recess structure schematic diagram of embodiment one the utility model housing.
Fig. 4 is embodiment one stereogram of the present utility model.
Fig. 5 is the structure sectional view of embodiment one the utility model Light Condition.
Fig. 6 is the structure sectional view of embodiment one the utility model overload.
Fig. 7 is the structure sectional view of embodiment three the utility model Light Condition.
Fig. 8 is the structure sectional view of embodiment three the utility model overload.
In figure, accompanying drawing is designated:
10. housing; 11. oil pockets; 12. dividing plates; 121. cross oil hole; 122. axis hole; 13. oil removal convex tendons; 14. steps; 15. cross oil groove;
20. rotating shaft; 201. throttling channel; 21. bulge loops; 211. lateral surface; 212. medial surface; 22. fulcrums; 23. blades; 231. blade bottom end faces; 24. annular grooves; 241. sealing ring;
30. gland;
40. valve plate; 41. valve blocks; 42. circular holes;
50. nut; 51. ring grooves; 52. sealing rings;
60. elastomer;
70. regulating part;
a. cross oily passage.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is further illustrated.
embodiment one(to be coordinated with elastomer by the valve plate as oil sealing portion and push up means of press seals oil pocket and form the pressure maintaining valve that can set oil pocket oil pressure).
A kind of hydraulic rotary damper with overload protection as shown in Figures 1 to 6, comprise the housing 10 being provided with oil pocket 11, one is sealed in oil pocket 11 with the rotating shaft 20 of scratching oily blade 23, housing 10 inwall is provided with at least one oil removal convex tendon 13, described blade 23 and oil removal convex tendon 13 coordinate described oil pocket 11 are separated at least one high-voltage oil cavity (not shown) and a low pressure oil pocket (not shown), the oil sealing portion that oily passage A is crossed in the mistake oily passage A of a connection high-voltage oil cavity and low pressure oil pocket and removable opening and closing is provided with in described housing 10, the elastomer 60 that described oil sealing portion and is limited in oil pocket 11 outside coordinates, when damper overload uses, oil sealing portion moves by oil pressure effect and makes elastomer 60 pressurized generation elastic deformation, now cross oily passage A open or open more to make damping oil quickly through.
Specific in the present embodiment, this hydraulic rotary damper with overload protection mainly comprises housing 10, rotating shaft 20, gland 30, oil sealing portion, a locating part and an elastomer 60.As shown in Figures 2 and 3, housing 10 of the present utility model has the circular oil pocket 11 that can fill damping oil, it is a dividing plate 12 bottom oil pocket 11, two oil removal convex tendons 13 are axially symmetricly set on oil pocket 11 circle wall, oil removal convex tendon 13 bottom and dividing plate 12 is one-body molded is fixedly arranged in housing 10, oil pocket 11 bottom baffles 12 of oil removal convex tendon 13 both sides communicates a mistake oil hole 121 is set, described oil hole 121 of crossing is communicated with the inside of oil pocket 11 with outside, in the middle of dividing plate 12, there is an axis hole 122, oil removal convex tendon 13 bottom is provided with the oil groove 15 excessively of its both sides of connection, a step 14 is established in side, oil removal convex tendon 13 bottom.As shown in Figure 1, rotating shaft 20 of the present utility model has two and scratches oily blade 23, two blades 23 are symmetricly set in rotating shaft 20, blade 23 top of rotating shaft 20 is provided with a bulge loop 21 be rotatably assorted with circular oil pocket 11 opening, rotating shaft 20 bottom sets firmly a fulcrum 22, rotating shaft 20 be provided with one section with the throttling channel 201 of oil removal convex tendon 13 matched in clearance, when oil removal convex tendon 13 skims over throttling channel 201 groove, the gap that damping oil can be formed from oil removal convex tendon 13 and throttling channel 201 quickly through, the rotating shaft 20 before bulge loop 21 is also established one for being socketed the annular groove 24 of sealing ring 241.As shown in Figure 1, the described oil sealing portion of the present embodiment be housing 10 end arrange one axial slip break-make can cross the valve plate 40 of oil hole 121, valve plate 40 pastes tactile dividing plate 12 and sealed oil hole 121, when valve plate 40 is away from dividing plate 12 opened oil hole 121, the oily passage A of the mistake being communicated with high-voltage oil cavity and low pressure oil pocket described in being formed between valve plate 40 with dividing plate 12.Valve plate 40 contraposition step 14 place is provided with to fit with step 14 side and closes or away from the valve block 41 of opened oil groove 15, valve plate 40 center has a circular hole 42; The locating part of the present embodiment is nut 50, and it has external screw thread and is provided with the ring groove 51 for being socketed sealing ring 52, and elastomer 60 top is pressed between valve plate 40 and nut 50.
The following describes assembling of the present utility model, as depicted in figs. 1 and 2, can be secured to bottom housing 10 by the axial slip break-make valve plate 40 of crossing oil hole 121, the valve block 41 of valve plate 40 is positioned at step 14 place, then elastomer 60 is inserted in bottom housing 10, elastomer 60 is elastic rubber ring, and then cover has the nut 50 of sealing ring 52 to be screwed in bottom housing 10, by the pressure on top surface of rotating nut 50 adjustable elastomer 60 pairs of valve plates 40; During rotating shaft 20 undamped rotation, damping oil passed through oil groove 15 rush to summit valve block 41 with cross oil groove 15 be separated, during rotating shaft 20 damping rotary oil pocket 11 sealing type pressure promote valve block 41 be close to oil groove 15; Shown in Fig. 5, rotating shaft 20 is inserted in oil pocket 11, and the circular hole 42 at the axis hole 122 that fulcrum 22 is middle with dividing plate 12 and valve plate 40 center is rotatably assorted, and fits in rotating shaft 20 surface between oil removal convex tendon 13 and blade 23; Fill damping oil, then gland 30 is socketed oil pocket 11 opening portion and adopts Wave crest Welding, and bulge loop 21 lateral surface 211 in rotating shaft 20 pastes with gland 30 and touches, and rotating shaft 20 and gland 30 are sealed by sealing ring 241; The radial subsides with oil pocket 11 inner round wall of blade 23 is touched, and blade 23 bottom face 231 and dividing plate 12 paste and touch, and oil removal convex tendon 13 top and bulge loop 21 medial surface 212 paste and touch, and complete assembling of the present utility model.
The following detailed description of operation principle of the present utility model with specifically implement action.
As shown in Figure 5, rotating shaft 20 is when in normal torque range, (normal load) works, when blade 23 seal oil chamber 11 in rotating shaft 20 scratches oil, damping oil is by the fit clearance oil impregnate of oil pocket 11 with rotating shaft 20, the damping oil pressure of blade 23 oil closed cavity 11 is less than or equal to the oil hole 121 excessively that elastomer 60 pushes up pressure valve plate 40 seal oil chamber 11 bottom baffles 12, namely the damping oil oil pressure deficiency in oil pocket 11 washes valve plate 40 open or deficiency washes valve plate 40 release greatly open, namely for transshipping the mistake oily passage A closedown of release or the opened oily passage A of less degree to oil pocket 11, damping oil oil pressure (namely elastomer 60 pushes up the pressure of pressure valve plate 40) the scope internal damping that rotating shaft 20 is limited at valve plate 40 is rotated.
As shown in Figure 6, when rotating shaft 20 moment of torsion increases suddenly (load exceedes), blade 23 seal oil chamber 11 in rotating shaft 20 is scratched oil pressure oil pressure and is increased, when the damping oil pressure of oil pocket 11 exceedes the safe ability to bear of blade 23, the damping oil pressure of oil pocket 11 makes damping oil pass through oil hole 121 and activates the opened oily passage A of valve plate 40 or opened oily passage A greatly, damping oil passed through oily passage A and crossed oil hole 121 to strengthen the flow velocity of damping oil in blade 23 both sides, when rotating shaft 20 is transshipped larger, the damping oil pressure of oil pocket 11 is larger, valve plate 40 is opened with the spacing of dividing plate 12 larger, cross oily passage A larger, the damping oil hydraulic pressure difference making blade 23 be operated in its both sides reduces, guarantee that the blade 23 of rotating shaft 20 can not damage in the damping oil pressure work of safety, larger to the release of oil pocket 11, realize overload protection function of the present utility model.
In the present embodiment, distance between described locating part and valve plate 40 is adjustable, to make the adjustment that the pretightning force of elastomer 60 is adjustable and then realize damper overload load, particularly, the pressure that elastomer 60 pushes up pressure valve plate 40 oil closed cavity 11 is adjusted by nut 50, namely during adjustable settings rotating shaft 20 damping rotary blade 23 scratch oil pressure, with at the gap length opened of oil pocket 11 damping oil pressure valve plate 40, to adjust the velocity of rotation of rotating shaft 20.
embodiment two(oil sealing portion valve plate is from forming the pressure maintaining valve that can set oil pocket oil pressure as elastomeric material top means of press seals oil pocket).
The distinctive points of the present embodiment and embodiment one is, valve plate 40 itself is made up of elastomeric material, it can be elastic caoutchouc, and without the need to establishing elastomer 60 in addition, when the present embodiment shaft 20 moment of torsion increases suddenly (load exceedes), blade 23 seal oil chamber 11 in rotating shaft 20 is scratched oil pressure oil pressure and is increased, when the damping oil pressure of oil pocket 11 exceedes the safe ability to bear of blade 23, the damping oil pressure of oil pocket 11 makes damping oil pass through oil hole 121 to make valve plate 40 elastic deformation or elastic deformation greatly occur with opened oily passage A or opened oily passage A greatly, the damping oil hydraulic pressure difference making blade 23 be operated in its both sides reduces, guarantee that the blade 23 of rotating shaft 20 can not damage in the damping oil pressure work of safety, larger to the release of oil pocket 11, realize overload protection function of the present utility model.
The pressure that valve plate 40 pushes up pressure oil closed cavity 11 is adjusted by nut 50, namely during adjustable settings rotating shaft 20 damping rotary blade 23 scratch oil pressure, with the size at the oil pocket 11 damping oil pressure gap length opened of valve plate 40 or elastic deformation degree, to adjust the velocity of rotation of rotating shaft 20.
Adopt the technical scheme of above-mentioned first and second embodiments, when blade 23 seal oil chamber 11 of rotating shaft 20 scratches oil, damping oil slow transits through blade 23, the oil pressure that oil pocket 11 produces reacts on blade 23, the moment of torsion of rotating shaft 20 is become rotate greatly and slowly, the utility model is connected to when closet cover plate uses, when cover plate is forced to turn over fast by user, cover plate turns over the moment of torsion (overload) that impulse force strengthens rotating shaft 20 under moment, blade 23 accelerates to scratch oil makes oil pocket 11 oil pressure increase further, oil pocket 11 overvoltage, a pressure maintaining valve is built from the oil hole 121 of crossing bottom oil pocket 11 by valve plate 40 and elastomer 60 or valve plate 40, make rotating shaft 20 when damping rotary, the oil pressure difference causing blade 23 slowly to rotate in oil pocket 11 is stabilized in a setting value, avoid parts excessive pressure damages in damper, push up pressure adjustable elastic body 60 by nut 50 or push up the tightness that pressure regulates the valve plate 40 be made up of elastomeric material, the force value of adjustable valve plate 40 oil closed cavity 11, the i.e. adjustable settings damper oil pocket hydraulic pressure that can bear.
embodiment three(oil sealing portion is arranged in rotating shaft and with elastomer and coordinates opening and closing to cross the size of oily passage or modified oily passage to form the pressure maintaining valve limiting oil pocket oil pressure).
The difference of the present embodiment and embodiment one is: as shown in Figure 7, the utility model comprises the housing 10 with circular oil pocket 11, one is sealed in oil pocket 11 with the rotating shaft 20 of scratching oily blade 23 by gland 30, described gland 30 is one have externally threaded adjusting nut, it is connected with female housing 10 matching ends of band, the oil removal convex tendon 13 of oil pocket 11 internal fixtion is fitted with rotating shaft 20 surface, blade 23 coordinates with oil removal convex tendon 13 and is divided into high-voltage oil cavity and low pressure oil pocket to brake rotating shaft 20 rotating speed oil pocket 11, rotating shaft 20 can slide axially between gland 30 and oil pocket 11, the oily passage A of mistake of described connection high-voltage oil cavity and low pressure oil pocket is arranged between rotating shaft 20 and housing 10 inwall, the oily passage A of mistake of the present embodiment is provided with top and bottom that two are separately positioned on housing 10, described oil sealing portion is arranged in rotating shaft 20, rotating shaft 20 can slide axially to make the opening and closing of oil sealing portion cross the size of oily passage A or modified oily passage A between gland 30 and oil pocket 11, the elastomer 60 of one elastic caoutchouc is axially pressed between gland 30 and rotating shaft 20 in top, scratching oily blade 23 bottom surface and pasting tactile with housing 10 bottom surface in rotating shaft 20, blade 23 top of rotating shaft 20 is provided with a bulge loop 21 be rotatably assorted with oil pocket 11 opening, the oil sealing portion of the present embodiment is the bottom of this bulge loop 21 and blade 23, and it is the corresponding oily passage A of two mistakes that can open or close top and the bottom being arranged on housing 10 respectively.Fit in bulge loop 21 medial surface 212 and oil removal convex tendon 13 top; The utility model blade 23 is radial to be had swingable regulating part 70 indirectly to paste with oil pocket 11 by the upper attaching of blade 23 radial direction to touch, and pastes tactile bottom blade 23 and regulating part 70 bottom face and housing 10; Oil removal convex tendon 13 bottom and oil pocket 11 bottom face are fixed, and oil removal convex tendon 13 top and bulge loop 21 medial surface 212 paste and touch; Described elastomer 60 axially top is pressed between gland 30 and bulge loop 21 lateral surface 211.
As shown in Figure 8, when rotating shaft 20 overload work, blade 23 and on the oil pressure overvoltage of regulating part 70 seal oil chamber 11 time, damping oil pushing tow bulge loop 21 makes rotating shaft 20 entirety slide axially, bulge loop 21 pushes up pressure compresses elastomeric 60, bulge loop 21 medial surface 212 is separated with the top of oil removal convex tendon 13 or is separated greatly, it is accelerate the oil pressure that the oily passage A of mistake that oil pocket 11 damping oil flows offsets overburden portion that blade 23 and housing 10 bottom surface are separated or are separated more the gap of formation or larger gap, blade 23 is made to be operated in normal oil pressure range and can not to damage, the utility model is made to have overload protection function.
By adjusting with externally threaded gland 30 pressure that elastomer 60 pushes up belling ring 21 oil closed cavity 11, namely during adjustable settings rotating shaft 20 damping rotary blade 23 scratch oil pressure, with the size in the opened oily passage A gap of oil pocket 11 damping oil pressure, to adjust the velocity of rotation of rotating shaft 20.
embodiment four(oil sealing portion is arranged in rotating shaft and oil sealing portion and crosses the size of oily passage or modified oily passage to form the pressure maintaining valve limiting oil pocket oil pressure from making also opening and closing as elastomeric material)
The difference of the present embodiment and embodiment three is, the oil sealing portion bulge loop 21 of the present embodiment itself is made up of elastomeric material, it can be elastic caoutchouc, and without the need to establishing elastomer 60 in addition, when rotating shaft 20 overload work, there is elastic deformation in bulge loop 21 self, bulge loop 21 medial surface 212 is made to be separated with the top of oil removal convex tendon 13 or to be separated greatly, blade 23 and housing 10 bottom surface be separated or be separated more formation gap or more wide arc gap be accelerate the oil pressure that the oily passage A of mistake that oil pocket 11 damping oil flows offsets overburden portion, blade 23 is made to be operated in normal oil pressure range and can not to damage, the utility model is made to have overload protection function.
All the other structure & working mechanism of the present embodiment are identical with embodiment three, repeat no more here.
Adopt the scheme of above-mentioned third and fourth embodiment, when rotating shaft 20 works under damping mode of operation, blade 23 accelerates to scratch oil makes oil pocket 11 oil pressure increase further, when oil pocket 11 oil pressure exceedes or exceedes more the pressure of elastomer 60 countershaft 20 or extrudes the oil sealing portion generation elastic deformation of being made up of elastomeric material, oil pocket 11 oil pressure activated rotating shaft 20 moves axially, rotating shaft 20 is made to form oil-gap with the axial mating surface of oil pocket 11 or expand oil-gap further, offset oil pocket 11 part oil pressure, the oil pressure of oil pocket 11 is made to be stabilized in the oil pressure range of blade 23 trouble free service, blade 23 is avoided to fracture damage, and ensure that damper other parts inner are not damaged.And regulate top compression elasticity body 60 by gland 30 or regulate top to press the tightness in the oil sealing portion of being made up of elastomeric material, the force value of adjustable opened oily passage, be i.e. the size of oil pocket hydraulic pressure that can bear of adjustable settings damper.
Locating part in above-described embodiment or the adjustable structure of gland are except adopting the structure of nut rotation adjustable range, also can be other structures, as adopted skid adjustable range etc., as long as can realize making elastomeric pretightning force adjustable with the distance in oil sealing portion is adjustable.The elastomer of embodiment one and embodiment three, except adopting elastic caoutchouc, also can be spring, equally also can realize object of the present invention.
Above embodiment is only for illustration of the utility model, but not to restriction of the present utility model, those skilled in the art, when not departing from spirit and scope of the present utility model, can also make various conversion or change.Therefore, all equivalent technical schemes also should belong to category of the present utility model, should be limited by each claim.
Claims (11)
1. there is the hydraulic rotary damper of overload protection, comprise the housing being provided with oil pocket, one with scratching the rotating shaft sealing of oily blade in oil pocket, inner walls is provided with at least one oil removal convex tendon, described oil pocket is separated at least one high-voltage oil cavity and a low pressure oil pocket by described blade and the cooperation of oil removal convex tendon, it is characterized in that: in described housing, be provided with the oil sealing portion that oily passage is crossed in the oily passage of mistake of a connection high-voltage oil cavity and low pressure oil pocket and removable opening and closing, described oil sealing portion coordinates with an elastomer being limited in oil pocket outside or oil sealing portion is originally made as elastomeric material, when damper overload uses, oil sealing portion moves by oil pressure effect and makes the generation elastic deformation of elastomer pressurized or oil sealing portion from experiencing oil pressure effect generation elastic deformation, now cross oily passage open or open more to make damping oil quickly through.
2. there is the hydraulic rotary damper of overload protection as claimed in claim 1; it is characterized in that: described oil pocket end is provided with a connection oil pocket inside and crosses oil hole with outside; described oil sealing portion be shell end arrange one axial slip break-make can cross the valve plate of oil hole; valve plate pastes when touching oil pocket end and sealed oil hole; during valve plate oil hole opened away from oil pocket end; the oily passage of the mistake being communicated with high-voltage oil cavity and low pressure oil pocket described in being formed between valve plate with oil pocket end; shell end connects a locating part, and described elastomer top is pressed between valve plate and locating part.
3. there is the hydraulic rotary damper of overload protection as claimed in claim 2, it is characterized in that: the distance between described locating part and valve plate is adjustable, to make the adjustment that elastomeric pretightning force is adjustable and then realize damper overload load.
4. have the hydraulic rotary damper of overload protection as claimed in claim 2, it is characterized in that: described oil pocket bottom is provided with a dividing plate, described oil hole of crossing is arranged on described dividing plate.
5. there is the hydraulic rotary damper of overload protection as claimed in claim 4, it is characterized in that: the blade tip of described rotating shaft is provided with a bulge loop be rotatably assorted with oil pocket opening, and blade radial and oil pocket inwall paste and touch, and blade bottom end face and dividing plate paste and touch; Oil removal convex tendon bottom and dividing plate is one-body molded is fixed in housing, oil removal convex tendon top and bulge loop medial surface paste and touch.
6. there is the hydraulic rotary damper of overload protection as claimed in claim 4, it is characterized in that: described oil removal convex tendon bottom is provided with the oil groove excessively of its both sides of connection, a step is established in side, oil removal convex tendon bottom, and valve plate contraposition step place is provided with to fit with step side and closed oil groove or the valve block away from opened oil groove; During rotating shaft undamped rotation, damping oil passed through oil groove rush to summit valve block with cross oil groove be separated, during rotating shaft damping rotary oil pocket sealing type pressure promote valve block be close to oil groove.
7. there is the hydraulic rotary damper of overload protection as claimed in claim 1; it is characterized in that: described damper also comprises the gland that is installed in shell end; the oily channel setting of mistake of described connection high-voltage oil cavity and low pressure oil pocket is between rotating shaft and inner walls; described oil sealing portion is arranged in rotating shaft; rotating shaft can slide axially to make the opening and closing of oil sealing portion cross the size of oily passage or modified oily passage between gland and oil pocket, and described elastomer axially top is pressed between gland and rotating shaft.
8. there is the hydraulic rotary damper of overload protection as claimed in claim 7; it is characterized in that: described gland is adjustable to be installed in shell end, by regulating the overload load of distance adjustable elastic body pretightning force between gland and rotating shaft and then damping adjusting device.
9. there is the hydraulic rotary damper of overload protection as claimed in claim 7, it is characterized in that: the blade tip of described rotating shaft is provided with a bulge loop be rotatably assorted with oil pocket opening, blade radial and oil pocket inwall directly or indirectly paste tactile, and blade bottom end face and housing bottom paste and touch; Oil removal convex tendon bottom and oil pocket bottom face are fixed, and oil removal convex tendon top and bulge loop medial surface paste and touch; Described elastomer axially top is pressed between gland and bulge loop lateral surface.
10. have the hydraulic rotary damper of overload protection as claimed in claim 9, it is characterized in that: on described blade radial, attaching has swingable regulating part, described regulating part and oil pocket inwall and oil pocket bottom face paste and touch.
11. hydraulic rotary dampers with overload protection as described in any one of claim 1-10 claim, is characterized in that: described elastomer is elastic caoutchouc or spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520034633.4U CN204379148U (en) | 2015-01-19 | 2015-01-19 | There is the hydraulic rotary damper of overload protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520034633.4U CN204379148U (en) | 2015-01-19 | 2015-01-19 | There is the hydraulic rotary damper of overload protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204379148U true CN204379148U (en) | 2015-06-10 |
Family
ID=53351909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520034633.4U Active CN204379148U (en) | 2015-01-19 | 2015-01-19 | There is the hydraulic rotary damper of overload protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204379148U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108606709A (en) * | 2018-06-04 | 2018-10-02 | 厦门瑞尔特卫浴科技股份有限公司 | A kind of stand-type damping unit of compact |
| CN110141149A (en) * | 2019-06-27 | 2019-08-20 | 泉州科发卫浴有限公司 | A kind of adjustable damper with overload protection function |
-
2015
- 2015-01-19 CN CN201520034633.4U patent/CN204379148U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108606709A (en) * | 2018-06-04 | 2018-10-02 | 厦门瑞尔特卫浴科技股份有限公司 | A kind of stand-type damping unit of compact |
| CN108606709B (en) * | 2018-06-04 | 2023-10-20 | 厦门瑞尔特卫浴科技股份有限公司 | Compact standing damping device |
| CN110141149A (en) * | 2019-06-27 | 2019-08-20 | 泉州科发卫浴有限公司 | A kind of adjustable damper with overload protection function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201615239U (en) | Pressure balancing plug valve | |
| CN204379148U (en) | There is the hydraulic rotary damper of overload protection | |
| CN207111971U (en) | A kind of ball valve | |
| CN205823234U (en) | A kind of relief valve | |
| CN105351550A (en) | Double-plate hard sealing gate valve | |
| CN203685115U (en) | Rubber tube protruding prevention ring for permanent packer | |
| CN103291983A (en) | Safety valve and hydraulic support with same | |
| CN203905899U (en) | Surface controlled subsurface safety valve | |
| CN204061976U (en) | Dress formula floating ball valve in one | |
| CN204175974U (en) | Anti-leakage type stop valve | |
| CN103410997B (en) | High pressure relief formula double disc parallel seat single-face hard sealing gate valve | |
| CN204114254U (en) | self-closing stop valve | |
| CN202220898U (en) | Hydraulic damping device for valve | |
| CN205013735U (en) | Wear -resistant eccentric half -ball valve | |
| CN202001628U (en) | Bidirectional pressure-bearing fluorine rubber fire-proof butterfly valve | |
| CN201802909U (en) | Hard sealing ball valve with high temperature and high pressure | |
| CN203784319U (en) | Self-sealing pressure stop valve | |
| CN204175997U (en) | A kind of Double-clack stop valve | |
| CN2568807Y (en) | Multiple switch valve | |
| CN203500474U (en) | Sealing ring for pipeline connection | |
| CN202708145U (en) | Spring stretching type parallel double-gate valve | |
| CN203421198U (en) | Gate valve | |
| CN203743473U (en) | Spring reset dual-acting-force parallel gate valve | |
| CN204433507U (en) | A kind of petrol storage tank | |
| CN204533618U (en) | A kind of have wearing and tearing and do not leak the Liquid valve with function of self closing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |