CN214837481U - Full-free buffer hydraulic rear cylinder body - Google Patents
Full-free buffer hydraulic rear cylinder body Download PDFInfo
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- CN214837481U CN214837481U CN202120676221.6U CN202120676221U CN214837481U CN 214837481 U CN214837481 U CN 214837481U CN 202120676221 U CN202120676221 U CN 202120676221U CN 214837481 U CN214837481 U CN 214837481U
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Abstract
The utility model provides a full free buffer hydraulic rear cylinder body, which comprises a left cylinder and a right cylinder; the left cylinder comprises a left plunger rod and a left cylinder body; the left plunger rod is positioned in the left cylinder body, one end of the left cylinder body is provided with a guide sleeve, and the left plunger rod is sleeved on the guide sleeve in a sliding manner; and a steel back bearing is arranged at the contact part of the left cylinder body and the left plunger rod, and the contact part of the steel back bearing and the guide sleeve is sealed by an O-shaped sealing ring. The left cylinder also comprises a piston assembly, the piston assembly is arranged in the left cylinder body, the piston assembly forms a piston buffer cavity, and a left plunger rod can be inserted into the corresponding piston buffer cavity to perform primary interception on oil in the piston buffer cavity; the right cylinder comprises a right piston rod and a right cylinder body; the inside of right cylinder body is equipped with buffering plunger, the copper sheathing is established to the cover between buffering plunger and the right cylinder body, encircles spring two between copper sheathing and the buffering plunger. The utility model discloses two cylinder bodies have good buffering effect, and two cylinder bodies freely switch the use, the effectual life who prolongs the cylinder body.
Description
Technical Field
The utility model belongs to the technical field of hydraulic equipment, specifically be a cylinder body behind full free buffer hydraulic pressure.
Background
For hydraulic cylinders, especially double-acting hydraulic cylinders, the speed is generally high during return stroke under the condition of quick operation, so that buffering devices are required to be arranged at the front end and the rear end of the stroke. However, the damping effect at the front end of the stroke is not always satisfactory because of the restriction of the internal space of the hydraulic cylinder. Especially, when the hydraulic cylinder drives a load with large mass, the kinetic energy is overlarge, so that the phenomenon of violent impact among the piston, the cylinder bottom and the guide sleeve can be generated at the front end and the rear end of the stroke, and the normal service life and the precision of the hydraulic cylinder are greatly influenced.
The existing hydraulic cylinders are all used with single cylinders, the load is concentrated when the single cylinders are used, the hydraulic cylinders are worn and loaded frequently, the life cycle is short, and therefore, double cylinders are required to be parallelly and automatically switched for use in some occasions.
SUMMERY OF THE UTILITY MODEL
Problem to current technical scheme existence, the utility model aims to provide a cylinder body behind full free buffering hydraulic pressure.
In order to achieve the above object, the utility model provides a following technical scheme:
a full-free buffer hydraulic rear cylinder body comprises a left cylinder and a right cylinder; the left cylinder comprises a left plunger rod and a left cylinder body; the left plunger rod is positioned in the left cylinder body, one end of the left cylinder body is provided with a guide sleeve, and the left plunger rod is sleeved on the guide sleeve in a sliding manner; a dust ring is arranged at the sliding sleeve joint of the left plunger rod and the guide sleeve, and a U-shaped sealing ring is arranged on the side of the dust ring; a steel back bearing is arranged at the contact part of the left cylinder body and the left plunger rod, and the guide sleeve of the steel back bearing is sealed by an O-shaped sealing ring;
the left cylinder also comprises a piston assembly, the piston assembly is arranged in the left cylinder body, the piston assembly forms a piston buffer cavity, and a left plunger rod can be inserted into the corresponding piston buffer cavity to perform primary interception on oil in the piston buffer cavity; an adjusting sleeve is arranged between the piston assembly and the left cylinder body; a support ring is sleeved between the adjusting sleeve and the piston assembly, the piston assembly surrounds the first spring, and the support ring and the left cylinder body are sealed and fixed through a steel wire retainer ring for the shaft;
the right cylinder comprises a right piston rod and a right cylinder body; the inside of right cylinder body is equipped with buffering plunger, the copper sheathing is established to the cover between buffering plunger and the right cylinder body, encircles spring two between copper sheathing and the buffering plunger.
As a further improvement of the scheme, the outer end of the left plunger rod is fixedly connected with a connecting rod, and a plug is arranged on the connecting rod.
As a further improvement of the scheme, one end of the left cylinder body, which is close to the piston assembly, is provided with an explosion-proof plug.
As a further improvement of the scheme, one end of the right cylinder body, which is close to the buffering plunger, is provided with a speed limiting valve.
As a further improvement of the scheme, the right piston rod and the right cylinder body are fixed through screws.
As a further improvement of the scheme, a stop piece is arranged at the contact part of the U-shaped sealing ring and the left plunger rod.
As a further improvement of the scheme, the left cylinder body and the right cylinder body are both hollow cylinders, and the inner diameters of the base circles of the left cylinder body and the right cylinder body are both 60 mm.
As a further improvement of this aspect, the diameters of the left and right plunger rods are 40 mm.
As a further improvement of the scheme, the surfaces of the left cylinder and the right cylinder are sprayed with matt gray PANTONE432 acrylic polyurethane enamel, and the glossiness is 40%.
As a further improvement of the scheme, the length ratio of the left cylinder to the right cylinder is 1.15: 1.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model uses the U-shaped sealing ring and the O-shaped sealing ring in a combined way, in the moving process of the hydraulic cylinder, the pressure applied to the U-shaped sealing ring is further transmitted to the O-shaped sealing ring, and the O-shaped sealing ring converts the maximum pressure point to the edge of the sealing ring, thereby realizing good sealing; through setting up the dirt proof boot, can avoid the problem of the sealed failure that produces because of the dust gets into along with the motion of piston rod.
The left cylinder is internally provided with a piston assembly, the piston assembly is provided with a piston buffer cavity, so that the left plunger rod can be inserted into the corresponding piston buffer cavity in the return stroke movement process of the left plunger rod to perform primary interception on oil in the piston buffer cavity, and when the left plunger rod continues to move in the return stroke, hydraulic oil in the piston buffer cavity is compressed and flows back through an oil duct with a smaller cross section area, so that hydraulic damping is formed on the left plunger rod, and a good buffering effect is achieved; the buffering plunger has been designed to the right side jar, cushions through buffering plunger cooperation spring, reaches good buffering effect, and two cylinder bodies freely switch the use, the effectual life who prolongs the cylinder body.
Drawings
The present invention will be further explained with reference to the accompanying drawings.
FIG. 1 is a schematic structural view of the left cylinder body of the present invention;
FIG. 2 is a schematic structural view of the right cylinder body of the present invention;
FIG. 3 is an enlarged schematic view of the structure at A in FIG. 1 according to the present invention;
FIG. 4 is an enlarged schematic view of the structure at B in FIG. 1 according to the present invention;
fig. 5 is an enlarged schematic view of the structure at C in fig. 2 according to the present invention.
The figure is marked with: 1-connecting rod, 2-plug, 3-left plunger rod, 4-dustproof ring, 5-U-shaped sealing ring, 6-guide sleeve, 7-steel back bearing, 8-left cylinder body, 9-adjusting sleeve, 10-support ring, 11-shaft steel wire retaining ring, 12-piston assembly, 13-spring I, 14-explosion-proof plug. 15-right piston rod, 16-screw, 17-right cylinder body, 18-copper sleeve, 19-buffer plunger, 20-spring II and 21-speed limiting valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1-5, the fully-free buffer hydraulic rear cylinder body of the embodiment comprises a left cylinder and a right cylinder; the left cylinder comprises a left plunger rod 3 and a left cylinder body 8; the left plunger rod 3 is positioned in the left cylinder body 8, one end of the left cylinder body 8 is provided with a guide sleeve 6, and the left plunger rod 3 is sleeved on the guide sleeve 6 in a sliding manner; a dust ring 4 is arranged at the sliding sleeve joint of the left plunger rod 3 and the guide sleeve 6, and a U-shaped sealing ring 5 is arranged on the side of the dust ring 4; the contact part of the left cylinder body 8 and the left plunger rod 3 is provided with a steel back bearing 7, and the contact part of the steel back bearing 7 and the guide sleeve 6 is sealed by an O-shaped sealing ring.
The left cylinder further comprises a piston assembly 12, the piston assembly 12 is arranged inside the left cylinder body 8, the piston assembly 12 forms a piston buffer cavity, the left plunger rod 3 can be inserted into the corresponding piston buffer cavity, and primary cut-off is formed on oil in the piston buffer cavity; an adjusting sleeve 9 is arranged between the piston assembly 12 and the left cylinder body 8; a support ring 10 is sleeved between the adjusting sleeve 9 and the piston assembly 12, a first spring 13 surrounds the piston assembly 12, and the support ring 10 and the left cylinder body 8 are sealed and fixed through a steel wire retainer ring 11 for the shaft;
the right cylinder comprises a right piston rod 15 and a right cylinder body 17; a buffering plunger 19 is arranged inside the right cylinder body 17, a copper sleeve 18 is sleeved between the buffering plunger 19 and the right cylinder body 17, and a second spring 20 surrounds between the copper sleeve 18 and the buffering plunger 19.
In some embodiments, further, the outer end of the left plunger rod 3 is fixed with a connecting rod 1, a plug 2 is arranged on the connecting rod 1, and an explosion-proof plug 14 is arranged at one end of the left cylinder 8 close to the piston assembly 12. One end of the right cylinder body 17 close to the buffering plunger 19 is provided with a speed limiting valve 21, and the right piston rod 15 and the right cylinder body 17 are fixed through a screw 16. And a stop piece is arranged at the contact part of the U-shaped sealing ring 5 and the left plunger rod 3.
Specifically, the left cylinder body 8 and the right cylinder body 17 are both hollow cylinders, the inner diameters of the base circles of the hollow cylinders are both 60 mm, and the diameters of the left plunger rod 3 and the right plunger rod 15 are 40 mm. The surfaces of the left cylinder and the right cylinder are both sprayed with matt gray PANTONE432 acrylic polyurethane enamel, the glossiness is 40%, and the length ratio of the left cylinder to the right cylinder is 1.15: 1.
When the left cylinder is used, the guide sleeve 6 is sleeved outside the left cylinder body 8, and the dustproof ring 4 and the U-shaped sealing ring 5 are arranged between the guide sleeve 6 and the left cylinder body 8. The contact part is sealed by a U-shaped sealing ring 5; a steel back bearing 7 is arranged at the joint of the left plunger rod 3 and the left cylinder body 8; by combining the U-shaped sealing ring and the O-shaped sealing ring, in the moving process of the hydraulic cylinder, the pressure applied to the U-shaped sealing ring is further transmitted to the O-shaped sealing ring, and the O-shaped sealing ring converts the maximum pressure point to the edge of the sealing ring, so that good sealing is realized; by providing the dust ring 4, the problem of sealing failure due to dust entering along with the movement of the plunger rod can be avoided.
The rear end of the left cylinder body 8 is provided with the piston assembly 12, the piston assembly 12 forms a piston buffer cavity, and the left plunger rod 3 can be inserted into the corresponding piston buffer cavity to realize primary interception of oil in the piston buffer cavity; an adjusting sleeve 9 is arranged between the piston assembly 12 and the left cylinder body 8; a support ring 10 is sleeved between the adjusting sleeve 9 and the piston assembly 12, a first spring 13 surrounds the piston assembly 12, and the support ring 10 and the left cylinder body 8 are sealed and fixed through a steel wire retainer ring 11 for the shaft; a corresponding piston buffer cavity is formed through the piston assembly 12, the left plunger rod 3 can be inserted into the corresponding piston buffer cavity, primary interception is formed on oil in the piston buffer cavity, and when the plunger rod moves in a return stroke continuously, hydraulic oil in the piston buffer cavity is compressed and flows back through an oil duct with a smaller cross section area, so that hydraulic damping is formed on the plunger rod, and a good buffering effect is achieved.
When the right cylinder is used, a buffering plunger 19 is arranged inside the right cylinder body 17, a copper sleeve 18 is sleeved between the buffering plunger 19 and the right cylinder body 17, and a second spring 20 is arranged between the copper sleeve 18 and the buffering plunger 19 in a surrounding mode; when the right piston rod 15 is compressed and transmitted to the buffering plunger 19, the two cylinder bodies are freely switched to be used by performing compression damping around the second spring 20, and the service life of the cylinder bodies is effectively prolonged.
The foregoing is merely exemplary and illustrative of the structure of the invention, and various modifications, additions and substitutions as described in the detailed description may be made by those skilled in the art without departing from the structure or scope of the invention as defined in the accompanying claims.
Claims (10)
1. A full-free buffer hydraulic rear cylinder body comprises a left cylinder and a right cylinder; characterized in that the left cylinder comprises a left plunger rod (3) and a left cylinder body (8); the left plunger rod (3) is positioned in the left cylinder body (8), one end of the left cylinder body (8) is provided with a guide sleeve (6), and the left plunger rod (3) is sleeved on the guide sleeve (6) in a sliding manner; a dust ring (4) is arranged at the sliding sleeve joint of the left plunger rod (3) and the guide sleeve (6), and a U-shaped sealing ring (5) is arranged on the side of the dust ring (4); a steel back bearing (7) is arranged at the contact part of the left cylinder body (8) and the left plunger rod (3), and the contact part of the steel back bearing (7) and the guide sleeve (6) is sealed by an O-shaped sealing ring;
the left cylinder also comprises a piston assembly (12), the piston assembly (12) is arranged inside the left cylinder body (8), the piston assembly (12) forms a piston buffer cavity, and the left plunger rod (3) can be inserted into the corresponding piston buffer cavity to perform primary interception on oil in the piston buffer cavity; an adjusting sleeve (9) is arranged between the piston assembly (12) and the left cylinder body (8); a support ring (10) is sleeved between the adjusting sleeve (9) and the piston assembly (12), a first spring (13) is wound on the piston assembly (12), and the support ring (10) and the left cylinder body (8) are sealed and fixed through a steel wire retaining ring (11) for the shaft;
the right cylinder comprises a right piston rod (15) and a right cylinder body (17); the inside of right cylinder body (17) is equipped with buffering plunger (19), copper sheathing (18) are established to the cover between buffering plunger (19) and right cylinder body (17), encircle spring two (20) between copper sheathing (18) and buffering plunger (19).
2. The fully free-buffer hydraulic rear cylinder according to claim 1, characterized in that the outer end of the left plunger rod (3) is fixed with a connecting rod (1), and the connecting rod (1) is provided with a plug (2).
3. A fully free-damping hydraulic rear cylinder according to claim 1, characterised in that the left cylinder (8) is provided with an anti-explosion plug (14) at the end adjacent the piston assembly (12).
4. The full-freedom buffer hydraulic rear cylinder body according to claim 1, characterized in that one end of the right cylinder body (17) close to the buffer plunger (19) is provided with a speed limiting valve (21).
5. A full free damping hydraulic rear cylinder according to claim 1, characterized by the right piston rod (15) and the right cylinder (17) being fixed by a screw (16).
6. The full free buffer hydraulic rear cylinder body according to claim 1, characterized in that a contact part of the U-shaped sealing ring (5) and the left plunger rod (3) is provided with a baffle plate.
7. The full free damping hydraulic rear cylinder according to claim 1, wherein the left cylinder (8) and the right cylinder (17) are both hollow cylinders, and the inner diameters of the base circles thereof are both 60 mm.
8. The full free damping hydraulic rear cylinder according to claim 1, characterized in that the left plunger rod (3) and the right plunger rod (15) have a diameter of 40 mm.
9. The fully free-cushioned hydraulic rear cylinder block as claimed in claim 1, wherein the left and right cylinder surfaces are each coated with matt gray PANTONE432 acrylic urethane enamel with a gloss of 40%.
10. The fully free-damping hydraulic rear cylinder block as claimed in claim 1, wherein the length ratio of the left and right cylinders is 1.15: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120676221.6U CN214837481U (en) | 2021-04-01 | 2021-04-01 | Full-free buffer hydraulic rear cylinder body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120676221.6U CN214837481U (en) | 2021-04-01 | 2021-04-01 | Full-free buffer hydraulic rear cylinder body |
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| Publication Number | Publication Date |
|---|---|
| CN214837481U true CN214837481U (en) | 2021-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120676221.6U Active CN214837481U (en) | 2021-04-01 | 2021-04-01 | Full-free buffer hydraulic rear cylinder body |
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| CN (1) | CN214837481U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114108704A (en) * | 2022-01-25 | 2022-03-01 | 徐州九龙电子工业有限公司 | Multistage buffering explosion-proof well lid for electric power well |
-
2021
- 2021-04-01 CN CN202120676221.6U patent/CN214837481U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114108704A (en) * | 2022-01-25 | 2022-03-01 | 徐州九龙电子工业有限公司 | Multistage buffering explosion-proof well lid for electric power well |
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