CN214661234U - Mining dump truck lifting cylinder provided with internal buffering limiting device - Google Patents
Mining dump truck lifting cylinder provided with internal buffering limiting device Download PDFInfo
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- CN214661234U CN214661234U CN202022654492.XU CN202022654492U CN214661234U CN 214661234 U CN214661234 U CN 214661234U CN 202022654492 U CN202022654492 U CN 202022654492U CN 214661234 U CN214661234 U CN 214661234U
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- pipe assembly
- buffering
- ring
- lifting cylinder
- limiting device
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Abstract
The utility model discloses a mining dump truck lifts jar with inside buffering stop device belongs to hydraulic pump technical field, including the outer tube assembly, the inside sliding connection of outer tube assembly has two pipe assemblies, and the inside sliding connection of two pipe assemblies has three pipe assemblies, it has first annular chamber to reserve between outer tube assembly and the two pipe assemblies, it has the second annular chamber to reserve between two pipe assemblies and the three pipe assemblies, the piston is installed through the bolt in top between two pipe assemblies and the three pipe assemblies, the buffering stop device that the combination that two pipe assembly bottom installation was furnished with buffering ring and retaining ring formed. The utility model discloses a set up inside buffering stop device on lifting cylinder, stop device's buffering ring is by the spring steel preparation, has fine cushioning effect, and the buffering stop device that buffering ring and retaining ring are constituteed has played fine buffering when lifting cylinder descends spacingly, has avoided producing when mining car railway carriage or compartment descends and has acutely strikeed.
Description
Technical Field
The utility model relates to a hydraulic pump technical field, specificly relate to a mining dump truck lifts jar that is provided with inside buffering stop device.
Background
An off-highway mining dump truck (hereinafter referred to as a mining truck) is key transportation equipment of a large-scale open mine, a lifting cylinder is used as an execution element of a lifting hydraulic system, the lifting cylinder is one of key parts of the lifting hydraulic system, and the quality of the performance of the lifting cylinder determines the quality of the performance of a whole truck. Because the lifting cylinder has long working stroke and limited installation space, the lifting cylinder of the mining vehicle is generally a two-stage or three-stage double-acting hydraulic cylinder, and when the lifting cylinder descends, the first stage or the second stage must rely on a self limiting device. Mining truck generally adopts outside spacing jar that lifts in the existing market, and the structure is: the contact of the plane of the root part of the club head and the pipe assembly is limited. Because the lifting cylinder of the mining vehicle bears heavy load, the limiting form is easy to generate severe impact, so that the reliability of the lifting cylinder and the vehicle frame is reduced, and the performance of the whole vehicle is further influenced.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved
The to-be-solved technical problem of the utility model is to provide a mining dump truck lifts jar with inside buffering stop device, it is through having set up inside buffering stop device on lifting the jar, stop device's buffering ring is by the spring steel preparation, has fine cushioning effect, and the buffering stop device that buffering ring and retaining ring are constituteed has played fine buffering when descending for lifting the jar spacing, has avoided producing violent impact when mining truck carriage descends.
2. Technical scheme
In order to solve the above problem, the utility model adopts the following technical scheme:
the mining dump truck lifting cylinder provided with the internal buffering limiting device comprises an outer pipe assembly, wherein the inner part of the outer pipe assembly is connected with a two-pipe assembly in a sliding manner, the inner part of the two-pipe assembly is connected with a three-pipe assembly in a sliding manner, a first annular cavity is reserved between the outer pipe assembly and the two-pipe assembly, a guide sleeve is installed at the bottom between the outer pipe assembly and the two-pipe assembly through a bolt, a second annular cavity is reserved between the two-pipe assembly and the three-pipe assembly, a piston is installed at the top between the two-pipe assembly and the three-pipe assembly through a bolt, one end of the three-pipe assembly extends to the outer side of the two-pipe assembly, a descending opening and a lifting opening are respectively formed at the left end and the right end of the three-pipe assembly, and the buffering limiting device formed by combining a buffering ring and a retaining ring is installed at the bottom of the two-pipe assembly.
Preferably, the buffering and limiting device formed by combining the buffering ring and the retainer ring is changed according to the change of the number of stages of the actual lifting cylinder.
Preferably, the buffer ring is an open ring made of spring steel, and is compressed and then is arranged in an annular semicircular groove at the bottom of the two-pipe assembly.
Preferably, the retainer ring is a rigid member having an annular semi-circular groove that mates with the cushion ring.
Preferably, the top end of the outer tube assembly and the bottom end of the three-tube assembly are both provided with hinge holes.
The utility model also provides an above-mentioned buffering method that is provided with inside buffering stop device's mining dump truck lifting cylinder specifically includes following step:
when the lifting cylinder works, oil flows in and flows out through a lifting port and a descending port at the rod head, the piston is installed on the three-pipe assembly through a bolt, a buffering limiting device consisting of a buffering ring (8) and a retaining ring is installed at the bottom of the two-pipe assembly, when a carriage is lifted, pressure oil enters the lifting cylinder through the lifting port, and simultaneously the oil in the first annular cavity and the oil in the second annular cavity returns to an oil tank through the descending port;
when the carriage descends, pressure oil enters the second annular cavity and the first annular cavity sequentially through the descending port, oil in the large cavity returns to the oil tank through the lifting port, and during the period, when the piston moves to the bottom of the two-pipe assembly, the limiting device consisting of the buffer ring and the check ring is used for buffering and limiting the piston, so that severe impact generated when the lifting cylinder descends is avoided.
3. Advantageous effects
The utility model discloses fluid flows in through the mouth that lifts and the decline mouth of pole head department and flows, and on the three pipe assembly was installed to the piston through the bolt, two pipe assembly bottom installation were by the buffering stop device that buffering ring and retaining ring are constituteed. The buffer ring is a split ring made of spring steel, and is required to be compressed and then installed in an annular semicircular groove at the bottom of the two-pipe assembly, the exposed part of the buffer ring is limited by the retainer ring, the buffer ring and the retainer ring buffer and limit the piston together, when a carriage lifts, pressure oil enters the lifting cylinder through the lifting port, and meanwhile oil in the first annular cavity and the second annular cavity returns to the oil tank through the descending port. When the carriage descends, pressure oil enters the second annular cavity and the first annular cavity successively through the descending port, oil in the large cavity returns to the oil tank through the lifting port, and during the period, when the piston moves to the bottom of the two-pipe assembly, the limiting device consisting of the buffer ring and the check ring limits the oil in a buffering mode, so that severe impact generated when the lifting cylinder descends is avoided, the reliability of the lifting cylinder is greatly improved, and the performance of the whole vehicle is further improved.
To summer up, the utility model discloses simple structure, convenient spacing, reliability are high, have guaranteed the reliability that mining car railway carriage or compartment lifted the decline better. The utility model discloses a set up inside buffering stop device on lifting cylinder, stop device's buffering ring is by the spring steel preparation, has fine cushioning effect, and the buffering stop device that buffering ring and retaining ring are constituteed has played fine buffering when lifting cylinder descends spacingly, has avoided producing when mining car railway carriage or compartment descends and has acutely strikeed.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;
FIG. 3-1 is a front view of the cushion ring of the present invention;
fig. 3-2 is a side view of a cushion ring according to the present invention;
FIG. 4-1 is a front view of the middle retainer ring of the present invention;
fig. 4-2 is a side view of the retainer ring of the present invention.
Reference numerals: 1. a lifting port; 2. a drop port; 3. an outer tube assembly; 4. a second tube assembly; 5. a three-tube assembly; 6. a guide sleeve; 7. a piston; 8. a buffer ring; 9. a retainer ring; 10. a first ring cavity; 11. a second annular cavity.
Detailed Description
The following description sufficiently illustrates specific embodiments of the invention to enable those skilled in the art to practice and reproduce it.
Examples
As shown in fig. 1-4, the lifting cylinder of the mining dump truck provided with the internal buffering limiting device comprises an outer pipe assembly 3, wherein the inner part of the outer pipe assembly 3 is slidably connected with a two-pipe assembly 4, the inner part of the two-pipe assembly 4 is slidably connected with a three-pipe assembly 5, a first annular cavity 10 is reserved between the outer pipe assembly 3 and the two-pipe assembly 4, a guide sleeve 6 is installed at the bottom between the outer pipe assembly 3 and the two-pipe assembly 4 through a bolt, a second annular cavity 11 is reserved between the two-pipe assembly 4 and the three-pipe assembly 5, a piston 7 is installed at the top between the two-pipe assembly 4 and the three-pipe assembly 5 through a bolt, one end of the three-pipe assembly 5 extends to the outer side of the two-pipe assembly 4, a descending opening 2 and a lifting opening 1 are respectively formed at the left end and the right end of the three-pipe assembly 5, a buffering limiting device formed by combining a buffering ring 8 and a retaining ring 9 is installed at the bottom of the two-pipe assembly 4, the oil liquid flows in and flows out through the lifting port and the descending port at the rod head, the piston is installed on the three-tube assembly through the bolt, and the bottom of the two-tube assembly is provided with the buffering limiting device consisting of the buffering ring and the check ring. The buffer ring is a split ring made of spring steel, and is required to be compressed and then installed in an annular semicircular groove at the bottom of the two-pipe assembly, the exposed part of the buffer ring is limited by the retainer ring, the buffer ring and the retainer ring buffer and limit the piston together, when a carriage lifts, pressure oil enters the lifting cylinder through the lifting port, and meanwhile oil in the first annular cavity and the second annular cavity returns to the oil tank through the descending port. When a carriage descends, pressure oil enters the second annular cavity and the first annular cavity successively through the descending port, the oil in the large cavity returns to an oil tank through the lifting port, during the period, when a piston moves to the bottom of the two-pipe assembly, a limiting device consisting of a buffer ring and a retainer ring buffers and limits the piston, so that severe impact generated when the lifting cylinder descends is avoided, the reliability of the lifting cylinder is greatly improved, and the performance of the whole vehicle is further improved, the buffer limiting device formed by combining the buffer ring 8 and the retainer ring 9 changes according to the stage change of the actual lifting cylinder, the buffer ring 8 is a split ring made of spring steel and is compressed and then loaded into an annular semicircular groove at the bottom of the two-pipe assembly 4, the retainer ring 9 is a rigid piece with an annular semicircular groove matched with the buffer ring 8, an internal buffer limiting device is arranged on the lifting cylinder, and the buffer ring 8 of the limiting device is made of spring steel, the buffer limiting device composed of the buffer ring 8 and the retainer ring 9 has good buffer limiting effect when the lifting cylinder descends, severe impact generated when the carriage of the mining truck descends is avoided, and the top end of the outer pipe assembly 3 and the bottom end of the three-pipe assembly 5 are provided with hinge holes.
The specific action principle of the mining dump truck lifting cylinder provided with the internal buffering limiting device is as follows:
the utility model discloses the lift jar is two-stage two effect pneumatic cylinder, and working medium is hydraulic oil, lifts jar during operation, and fluid flows in through the lift mouth 1 and the 2 inflow of decline mouth of pole head department, and on three pipe assembly 5 was installed through the bolt to piston 7, the 4 bottom installations of two pipe assembly were by the buffering stop device that buffer ring 8 and retaining ring 9 are constituteed. The buffer ring 8 is the split ring by the spring steel preparation, needs install after the compression in the 4 bottom annular half slots of two pipe assembly, and buffer ring 8 exposes the part simultaneously and is spacing to retaining ring 9, and buffer ring 8 and retaining ring 9 cushion spacingly to piston 7 jointly, the utility model discloses at the during operation, when the carriage lifts, pressure oil is through lifting 1 entering lifting cylinder of mouthful, and the fluid of first annular chamber 10 and second annular chamber 11 returns to the oil tank through decline mouthful 2 simultaneously. When the carriage descends, pressure oil enters the second annular cavity 11 and the first annular cavity 10 through the descending port 2 in sequence, oil in the large cavity returns to an oil tank through the lifting port 1, in the process, when the piston 7 moves to the bottom of the two-pipe assembly 4, the limiting device consisting of the buffer ring 8 and the check ring 9 is used for buffering and limiting the oil, severe impact generated when the lifting cylinder descends is avoided, the reliability of the lifting cylinder is greatly improved, the performance of the whole truck is further improved, the reliability of the lifting cylinder is greatly improved by using the mining dump truck lifting cylinder provided with the internal buffering limiting device, and the performance of the whole truck is effectively improved.
According to the above content, the utility model discloses a set up inside buffering stop device on lifting cylinder, stop device's buffering ring 8 is made by the spring steel, has fine cushioning effect, and the buffering stop device that buffering ring 8 and retaining ring 9 are constituteed has played fine buffering spacing for lifting cylinder when descending, has avoided producing violent impact when the mining car railway carriage or compartment descends.
The terminology used herein is for the purpose of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.
Claims (5)
1. The mining dump truck lifting cylinder provided with the internal buffering limiting device is characterized by comprising an outer pipe assembly (3), wherein the inner part of the outer pipe assembly (3) is connected with a two-pipe assembly (4) in a sliding manner, the inner part of the two-pipe assembly (4) is connected with a three-pipe assembly (5) in a sliding manner, a first annular cavity (10) is reserved between the outer pipe assembly (3) and the two-pipe assembly (4), a guide sleeve (6) is installed at the bottom between the outer pipe assembly (3) and the two-pipe assembly (4) through a bolt, a second annular cavity (11) is reserved between the two-pipe assembly (4) and the three-pipe assembly (5), a piston (7) is installed at the top between the two-pipe assembly (4) and the three-pipe assembly (5) through a bolt, one end of the three-pipe assembly (5) extends to the outer side of the two-pipe assembly (4) and is respectively provided with a descending opening (2) and a lifting opening (1) at the left end and the right end of the three-pipe assembly (5), the bottom of the two-pipe assembly (4) is provided with a buffer limiting device formed by combining a buffer ring (8) and a retainer ring (9).
2. The mining dump truck lifting cylinder provided with the internal buffering and limiting device according to claim 1, characterized in that the buffering and limiting device formed by combining the buffering ring (8) and the check ring (9) is changed according to the change of the stage number of the actual lifting cylinder.
3. The mining dump truck lifting cylinder with the internal buffering limiting device according to claim 1, characterized in that the buffering ring (8) is an open ring made of spring steel, and is compressed and then loaded into an annular semicircular groove at the bottom of the two-pipe assembly (4).
4. The mining dump truck lifting cylinder provided with the internal buffering and limiting device according to claim 1, characterized in that the retainer ring (9) is a rigid member with an annular semicircular groove matched with the buffering ring (8).
5. The mining dump truck lifting cylinder with the internal buffering and limiting device according to claim 1, wherein hinged holes are formed in the top end of the outer pipe assembly (3) and the bottom end of the three pipe assembly (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022654492.XU CN214661234U (en) | 2020-11-17 | 2020-11-17 | Mining dump truck lifting cylinder provided with internal buffering limiting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022654492.XU CN214661234U (en) | 2020-11-17 | 2020-11-17 | Mining dump truck lifting cylinder provided with internal buffering limiting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214661234U true CN214661234U (en) | 2021-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022654492.XU Active CN214661234U (en) | 2020-11-17 | 2020-11-17 | Mining dump truck lifting cylinder provided with internal buffering limiting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214661234U (en) |
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2020
- 2020-11-17 CN CN202022654492.XU patent/CN214661234U/en active Active
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