CN203641159U - Hydraulic limiting suspension oil cylinder - Google Patents
Hydraulic limiting suspension oil cylinder Download PDFInfo
- Publication number
- CN203641159U CN203641159U CN201320821749.3U CN201320821749U CN203641159U CN 203641159 U CN203641159 U CN 203641159U CN 201320821749 U CN201320821749 U CN 201320821749U CN 203641159 U CN203641159 U CN 203641159U
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- piston rod
- damping hole
- cylinder
- oil cylinder
- cylinder body
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Abstract
The utility model belongs to the technical field of multi-axis mining vehicle suspension frames, and particularly relates to a hydraulic limiting suspension oil cylinder. The hydraulic limiting suspension oil cylinder comprises a cylinder body and a piston rod installed in the cylinder body. One end of the piston rod is sleeved with the cylinder body through a guiding sleeve, and the cylinder body is formed by welding an end cover and a cylinder tube. The inner side of the end cover is provided with a groove. The piston rod is formed by welding a buffering plunger and a hollow rod. When the piston rod is retracted completely, clearance fit is formed between the head of the buffering plunger of the piston rod and the groove of the end cover. The hollow rod is provided with a damping hole. The hydraulic limiting suspension oil cylinder has the advantages that the extending and retracting of the piston rod are reliably buffered and limited through the cooperation of the buffering plunger on the piston rod and the groove in the cylinder cover of the cylinder body and the damping hole respectively, the operation speed of the piston rod with the alternating load can be reduced to be zero when running to the tail end of a stroke, and damage and invalidation of the oil cylinder and the suspension frame due to collision are avoided.
Description
Technical field
The utility model belongs to multiaxis mine car suspension technical field, is specifically related to a kind of hydraulic stop hanging oil cylinder.
Background technique
Hydraulic stop hanging oil cylinder is the important component part of multiaxis mine car suspension, comprise cylinder body and be installed in the piston rod in cylinder body, one end of piston rod is sheathed in cylinder body by guide sleeve, wherein cylinder body is welded by end cap and cylinder barrel.In the time that mine car travels on the road surface, mining area of jolting, piston rod is flexible to be compensated wheel hop, the impact that available buffer uneven road surface causes vehicle body, passing ability and the run smoothness of assurance mine car.The road surface, mining area of often travelling due to multiaxis mine car is rugged, drop is large, the amplitude of tire bob is large, frequency is high, cause hydraulic stop hanging oil cylinder stroke larger, high and easily reach end of travel with the piston rod motion speed of alternate load, because can not meeting oil cylinder simultaneously, the design of existing hydraulic stop hanging oil cylinder compresses (being on tire, to jump limit position) completely, effectively spacing when oil cylinder extends (being to jump limit position under tire) and type frequently reciprocating completely, cannot adapt to load greatly large distance high frequency to-and-fro motion, easily cause the impact failure of hydraulic stop hanging oil cylinder or suspension.
Model utility content
Technical problem to be solved in the utility model is to provide and a kind ofly can meets that oil cylinder compresses completely, oil cylinder extends completely and effective spacing hydraulic stop hanging oil cylinder when type frequently reciprocating simultaneously.
For solving the problems of the technologies described above, the technical solution of the utility model is:
A kind of hydraulic stop hanging oil cylinder, comprise cylinder body and be installed in the piston rod in cylinder body, one end of described piston rod is sheathed in cylinder body by guide sleeve, described cylinder body is welded by end cap and cylinder barrel, described end cap inner side is provided with groove, described piston rod is welded by buffer plunger and hollow stem, and in the time that described piston rod is retracted completely, described piston rod buffer plunger head and described end cap groove form Spielpassung; In described hollow stem, damping hole is set.
Further, described damping hole comprises first order damping hole and second level damping hole, and described first order damping hole is distributed on described piston rod radially, and described second level damping hole is single hole; On described guide sleeve, be processed with a circle chamfering groove, after described piston rod stretches out completely, described first order damping hole is vertically by guide sleeve sealing, and described second level damping hole coordinates with described guide sleeve chamfering groove.
Further, described hydraulic stop hanging oil cylinder also comprises accumulator, and described accumulator is fixed on cylinder barrel outer wall, and hydraulic fluid port and the cylinder oil port of accumulator pass through pipeline connection.
The beneficial effects of the utility model be by the buffer plunger on piston rod and groove on cylinder block and head coordinate and damping hole carries out reliable buffer limit to stretching out with retraction of piston rod respectively, can make to reduce to zero with piston rod motion speed in the time arriving end of travel of alternate load, avoid clashing into the damage inactivation that causes oil cylinder and suspension.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment hydraulic stop hanging oil cylinder structural drawing;
Fig. 2 is Figure 1A place partial enlarged drawing.
Embodiment
Below in conjunction with the drawings and specific embodiments, the technical solution of the utility model is further described in detail.
A kind of as shown in Figure 1 be arranged on the hydraulic stop oil cylinder on multiaxis mine car, comprise cylinder body 1 and be installed in the piston rod 2 in cylinder body 1, one end of piston rod 2 is sheathed in cylinder body 1 by guide sleeve 3, wherein cylinder body 1 is welded by end cap 101 and cylinder barrel 102, end cap 101 inner sides are provided with groove 103, piston rod 2 is welded by buffer plunger 201 and hollow stem 202, and in the time that piston rod 2 is retracted completely, piston rod buffer plunger 201 heads and end cap groove 103 form Spielpassung.Buffer plunger 201 enters in the process of groove 103, fluid flows through from the two gap realizes buffering, in final fluid elastic compression in the annular groove of groove 103 bottoms produces, press, and heating is heat energy by kinetic transformation, resists tailpiece of the piston rod motional inertia to realize buffer limit.In hollow stem 202, damping hole is set, in the present embodiment, damping hole comprises first order damping hole 203 and second level damping hole 204, and first order damping hole 203 is distributed on piston rod 2 radially, and second level damping hole 204 is single hole; As shown in Figure 2, be processed with a circle chamfering groove 301 on guide sleeve 3, after piston rod 2 stretches out completely, first order damping hole 203 is vertically by guide sleeve 3 sealings, and second level damping hole 204 coordinates with guide sleeve chamfering groove 301, not by guide sleeve 3 sealings.First order damping hole 203 enter guide sleeve 3 by the process of progressive sealing in, fluid area of passage reduces gradually with the increase of stroke, fluid is progressively compressed and gradually reduces damping hole crosses oil mass, makes the kinetic energy of piston rod 2 by progressive absorption, plays the effect of progressive buffer limit; After 203 sealings of first order damping hole, second level damping hole 204 makes remaining kinetic energy evenly be absorbed also further buffer limit, in buffering, avoids the too high damage that causes cylinder seal part of oil liquid pressure.Again as shown in Figure 1, hydraulic stop hanging oil cylinder also comprises accumulator 4, and accumulator 4 is fixed on cylinder barrel 102 outer walls, and the hydraulic fluid port of accumulator 4 and cylinder barrel 102 hydraulic fluid ports pass through pipeline connection.Piston rod 2 is during to two end motions, and accumulator 4, along with fluid must pass in and out adjustment working pressure, can absorb certain pulse kinetic energy, plays buffering and spacing booster action.
The utility model embodiment is arranged on the hydraulic stop oil cylinder on multiaxis mine car, by the buffer plunger on piston rod and groove on cylinder block and head coordinate and damping hole carries out reliable buffer limit to stretching out with retraction of piston rod respectively, can make to reduce to zero with piston rod motion speed in the time arriving end of travel of alternate load, avoid clashing into the damage inactivation that causes oil cylinder and suspension.
It should be noted last that, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not departing from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (3)
1. a hydraulic stop hanging oil cylinder, comprise cylinder body and be installed in the piston rod in cylinder body, one end of described piston rod is sheathed in cylinder body by guide sleeve, described cylinder body is welded by end cap and cylinder barrel, it is characterized in that, described end cap inner side is provided with groove, described piston rod is welded by buffer plunger and hollow stem, in the time that described piston rod is retracted completely, described piston rod buffer plunger head and described end cap groove form Spielpassung, in described hollow stem, damping hole are set.
2. hydraulic stop hanging oil cylinder according to claim 1, is characterized in that, described damping hole comprises first order damping hole and second level damping hole, and described first order damping hole is distributed on described piston rod radially, and described second level damping hole is single hole; On described guide sleeve, be processed with a circle chamfering groove, after described piston rod stretches out completely, described first order damping hole is vertically by guide sleeve sealing, and described second level damping hole coordinates with described guide sleeve chamfering groove.
3. hydraulic stop hanging oil cylinder according to claim 1 and 2, is characterized in that, also comprises accumulator, and described accumulator is fixed on cylinder barrel outer wall, and hydraulic fluid port and the cylinder oil port of accumulator pass through pipeline connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320821749.3U CN203641159U (en) | 2013-12-12 | 2013-12-12 | Hydraulic limiting suspension oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320821749.3U CN203641159U (en) | 2013-12-12 | 2013-12-12 | Hydraulic limiting suspension oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203641159U true CN203641159U (en) | 2014-06-11 |
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ID=50872407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320821749.3U Expired - Fee Related CN203641159U (en) | 2013-12-12 | 2013-12-12 | Hydraulic limiting suspension oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203641159U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110714953A (en) * | 2019-10-18 | 2020-01-21 | 李文标 | Automobile hydraulic cylinder |
| CN114370441A (en) * | 2021-12-30 | 2022-04-19 | 中船重工中南装备有限责任公司 | Two-stage telescopic oil cylinder with buffering function |
-
2013
- 2013-12-12 CN CN201320821749.3U patent/CN203641159U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110714953A (en) * | 2019-10-18 | 2020-01-21 | 李文标 | Automobile hydraulic cylinder |
| CN110714953B (en) * | 2019-10-18 | 2021-02-12 | 扬州市正浩液压机械设备有限公司 | Automobile hydraulic cylinder |
| CN112648257A (en) * | 2019-10-18 | 2021-04-13 | 李文标 | Hydraulic cylinder and use method |
| CN114370441A (en) * | 2021-12-30 | 2022-04-19 | 中船重工中南装备有限责任公司 | Two-stage telescopic oil cylinder with buffering function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140611 Termination date: 20211212 |