CN217152496U - Quick synchronous multistage jar - Google Patents

Abstract

The utility model discloses a fast synchronous multistage cylinder, which comprises an outer cylinder body, a first-stage cylinder body, a second-stage cylinder body and a third-stage cylinder body, wherein the outer cylinder body and the first-stage cylinder body form a first-stage rodless cavity and a first-stage rod cavity; first no pole chamber hydraulic fluid port and second no pole chamber hydraulic fluid port have been seted up to outer cylinder body bottom, first there is the pole chamber hydraulic fluid port seted up on the outer cylinder body lateral wall, third no pole chamber hydraulic fluid port and second there is the pole chamber hydraulic fluid port have been seted up at tertiary cylinder body top, first no pole chamber hydraulic fluid port and one-level no pole chamber intercommunication, second no pole chamber hydraulic fluid port and second no pole chamber intercommunication, third no pole chamber hydraulic fluid port and tertiary no pole chamber intercommunication, first there is the pole chamber hydraulic fluid port and one-level to have the pole chamber intercommunication, second has the pole chamber hydraulic fluid port and tertiary there is the pole chamber intercommunication, tertiary there is the pole chamber and second level to have the pole chamber intercommunication. The utility model discloses can realize tertiary synchronous stretching out, shorten the time of erecting greatly, application scope is wider.

Description

Quick synchronous multistage jar

Technical Field

The utility model relates to the technical field of hydraulics, especially, relate to a quick synchronous multistage jar.

Background

At present, in the prior art, multi-stage cylinders are often used on a erecting device for completing quick erecting loads and smooth leveling loads, and most commonly three-stage cylinders. However, the existing three-stage cylinder meets the requirement of a vertical load, most of the vertical processes are that a first stage, a second stage and a third stage extend out in sequence, the application limitation is large in certain occasions, the efficiency is not high, and the total time is the sum of the extension time of each stage and is far longer than the required vertical time; the synchronous extending structure of second grade is similar in addition, and one-level, second grade can stretch out simultaneously, can shorten and erect the time, but require very high to the stability of piston rod, and the size external diameter after the tertiary arrangement is very big, surpasss the installation space requirement, and weight exceeds standard, need provide elements such as large-traffic pump valve, and the cost is higher, and holistic efficiency of erecting does not improve a lot moreover.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that, overcome prior art not enough, provide a quick synchronous multistage jar, it can realize tertiary synchronous stretching out, shortens greatly and plays to erect the time, and application scope is wider.

In order to solve the technical problem, the technical scheme of the utility model is that:

a rapid synchronous multistage cylinder comprises an outer cylinder body, a first-stage cylinder body in sliding fit with the outer cylinder body, a second-stage cylinder body in sliding fit with the first-stage cylinder body and a third-stage cylinder body in sliding fit with the second-stage cylinder body, wherein a first-stage rodless cavity and a first-stage rod cavity are formed between the outer cylinder body and the first-stage cylinder body, a second-stage rodless cavity and a second-stage rod cavity are formed between the first-stage cylinder body and the second-stage cylinder body, and a third-stage rodless cavity and a third-stage rod cavity are formed between the second-stage cylinder body and the third-stage cylinder body;

the hydraulic cylinder is characterized in that a first rodless cavity oil port and a second rodless cavity oil port are formed in the bottom of the outer cylinder body, a first rod cavity oil port is formed in the side wall of the outer cylinder body, a third rodless cavity oil port and a second rod cavity oil port are formed in the top of the tertiary cylinder body, the first rodless cavity oil port is communicated with the first-level rodless cavity, the second rodless cavity oil port is communicated with the second-level rodless cavity, the third rodless cavity oil port is communicated with the tertiary rodless cavity, the first rod cavity oil port is communicated with the first-level rod cavity, the second rod cavity oil port is communicated with the tertiary rod cavity, and the tertiary rod cavity is communicated with the second-level rod cavity.

Further, a first guide sleeve is installed at an upper port of the outer cylinder body, the lower end of the primary cylinder body is in sliding fit with the inner wall of the outer cylinder body, and the outer side wall of the primary cylinder body is in sliding fit with the inner wall of the first guide sleeve.

Further, a second guide sleeve is installed at an upper port of the first-stage cylinder body, the lower end of the second-stage cylinder body is in sliding fit with the inner wall of the first-stage cylinder body, and the outer side wall of the second-stage cylinder body is in sliding fit with the inner wall of the second guide sleeve.

Further, a third guide sleeve is installed at the upper end opening of the second-stage cylinder body, the lower end of the third-stage cylinder body is in sliding fit with the inner wall of the second-stage cylinder body, and the outer side wall of the third-stage cylinder body is in sliding fit with the inner wall of the third guide sleeve.

Further, an oil pipe is arranged at the center of the bottom in the outer cylinder body, the bottom of the oil pipe is communicated with a second rodless cavity oil port, a center hole is formed in the bottom of the first-stage cylinder body, the oil pipe is in sliding fit in the center hole, and an upper end port of the oil pipe is communicated with the second rodless cavity.

Furthermore, an avoidance pipe which extends upwards and is sealed at the top is formed in the center of the bottom of the secondary cylinder body, the avoidance pipe is communicated with the secondary rodless cavity, and the oil pipe extends upwards into the avoidance pipe.

Furthermore, a flange is formed on the periphery of the top end of the avoiding pipe, the three-stage cylinder body is in an open bottom shape, the avoiding pipe is sleeved with the three-stage cylinder body, and the inner wall of the three-stage cylinder body is in sliding fit with the flange;

and a third rodless cavity communicating oil port is further formed in the upper end of the avoidance pipe and can enable the third rodless cavity oil port to be communicated with the third rodless cavity.

Further, the second-stage cylinder body is of a double-layer composite cylinder body structure, a first clearance channel is formed between the inner layer and the outer layer of the second-stage cylinder body, a first communicating oil port communicated with the second-stage rod cavity and the first clearance channel is formed in the lower portion of the outer layer of the second-stage cylinder body, and a second communicating oil port communicated with the third-stage rod cavity and the first clearance channel is formed in the upper portion of the inner layer of the second-stage cylinder body.

Further, the third-stage cylinder body is of a double-layer composite cylinder body structure, a second gap channel is formed between the inner layer and the outer layer of the third-stage cylinder body, a third communicating oil port communicated with the third-stage rod cavity and the second gap channel is formed in the lower portion of the outer layer of the third-stage cylinder body, and a fourth communicating oil port communicated with the second rod cavity oil port and the second gap channel is formed in the upper portion of the inner layer of the third-stage cylinder body.

By adopting the technical scheme, the utility model discloses following beneficial effect has:

1. the utility model discloses a design that one-level, second grade, tertiary divide big cavity oil circuit of distribution alone, can supply oil simultaneously for every grade jar, realize tertiary synchronous stretching out, and then shorten the time of erectting greatly, improve the efficiency of erectting; each stage of cylinder body can independently supply oil to realize extension and retraction, and can also distribute the erection time of each stage according to the proportion, so that the adjustable range and the accuracy of erection are greatly improved.

2. The utility model discloses an installation space after tertiary jar is arranged can not be very big, and external diameter can accomplish very little, and weight is lighter, does benefit to and saves the cost, and tertiary independent control is flexible simultaneously and can make with the little characteristic of external diameter the utility model discloses use under more constrictive spaces, application scope is wider, and the limitation is littleer.

3. The utility model discloses an oil pipe and dodge the design of pipe for the tertiary jar plays the stroke of erecting longer satisfying the synchronous condition of erecting under.

Drawings

FIG. 1 is a schematic sectional view of the overall structure of the present invention;

FIG. 2 is a sectional view of the outer cylinder of the present invention;

FIG. 3 is a sectional structure view of the first-stage cylinder of the present invention;

FIG. 4 is a sectional structure view of the second stage cylinder of the present invention;

FIG. 5 is a sectional structure view of the three-stage cylinder of the present invention;

wherein, 1, the outer cylinder body; 100. a first guide sleeve; 101. an oil pipe; 2. a primary cylinder block; 200. a second guide sleeve; 201. a central bore; 3. a secondary cylinder body; 300. a third guide sleeve; 32. a first clearance channel; 321. a first communicating oil port; 322. a second communicating oil port; 33. an avoidance tube; 330. a flange; 331. the third-stage rodless cavity is communicated with the oil port; 4. a third-stage cylinder body; 40. a second gap channel; 401. a third communicating oil port; 402. a fourth communicating oil port; 5. a first rodless cavity oil port; 6. a second rodless cavity oil port; 7. a third rodless cavity oil port; 8. a first rod cavity oil port; 9. a second rod cavity oil port; 10. a primary rodless cavity; 11. a first-stage rod cavity; 20. a secondary rodless cavity; 21. a second-stage rod cavity; 30. a three-stage rodless cavity; 31. the three stages have rod cavities.

Detailed Description

In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.

As shown in fig. 1 to 5, in the present embodiment, there is provided a rapid-synchronization multistage cylinder whose main body comprises an external cylinder body 1, a primary cylinder body 2 slidably fitted in the external cylinder body 1, a secondary cylinder body 3 slidably fitted in the primary cylinder body 2, and a tertiary cylinder body 4 slidably fitted in the secondary cylinder body 3. Specifically, a first guide sleeve 100 is installed at the upper port of the outer cylinder body 1, a sealing element is installed in the first guide sleeve 100, the outer side wall of the primary cylinder body 2 is in sliding fit with the inner wall of the first guide sleeve 100, and meanwhile, the lower end of the primary cylinder body 2 is formed with an outer edge and is matched with the sealing element to be in sliding fit with the inner wall of the outer cylinder body 1; a second guide sleeve 200 is installed at the upper port of the primary cylinder body 2, a sealing element is installed in the second guide sleeve 200, the outer side wall of the secondary cylinder body 3 is in sliding fit with the inner wall of the second guide sleeve 200, and meanwhile, the lower end of the secondary cylinder body 3 is formed with an outer edge and is matched with the sealing element to be in sliding fit with the inner wall of the primary cylinder body 2; a third guide sleeve 300 is installed at the upper port of the secondary cylinder body 3, a sealing element is installed in the third guide sleeve 300, the outer side wall of the tertiary cylinder body 4 is in sliding fit with the inner wall of the third guide sleeve 300, and meanwhile, the lower end of the tertiary cylinder body 4 is formed with an outer edge and is provided with the sealing element to be in sliding fit with the inner wall of the secondary cylinder body 3.

In the present embodiment, as shown in fig. 1, a lower primary rodless chamber 10 and an upper primary rod chamber 11 are formed between the outer cylinder 1 and the primary cylinder 2, a lower secondary rodless chamber 20 and an upper secondary rod chamber 21 are formed between the primary cylinder 2 and the secondary cylinder 3, and a lower tertiary rodless chamber 30 and an upper tertiary rod chamber 31 are formed between the secondary cylinder 3 and the tertiary cylinder 4.

In order to realize that each cylinder can supply oil alone, and then realize tertiary synchronous stretching, first rodless chamber hydraulic fluid port 5 and second rodless chamber hydraulic fluid port 6 have been seted up to this embodiment in 1 bottom of the outer cylinder body, first there is the pole chamber hydraulic fluid port 8 to have been seted up on 1 lateral wall of the outer cylinder body, third rodless chamber hydraulic fluid port 7 and second have the pole chamber hydraulic fluid port 9 have been seted up at 4 tops of tertiary cylinder body, wherein first rodless chamber hydraulic fluid port 5 and one-level rodless chamber 10 intercommunication, second rodless chamber hydraulic fluid port 6 and second no pole chamber 20 intercommunication, third rodless chamber hydraulic fluid port 7 and tertiary rodless chamber 30 intercommunication, first there is the pole chamber hydraulic fluid port 8 and one-level to have the pole chamber 11 intercommunication, second has pole chamber hydraulic fluid port 9 and tertiary there is the pole chamber 31 to communicate, and tertiary there is the pole chamber 31 and second level to have the pole chamber 21 to communicate. Through the design, when the telescopic cylinder is used, oil is fed from the first rodless cavity oil port 5, and oil is discharged from the first rod cavity oil port 8, so that the primary cylinder body 2 can be controlled to extend out, and otherwise, the retraction can be controlled; the oil is fed from the second rodless cavity oil port 6, and the oil is discharged from the second rod cavity oil port 9, so that the secondary cylinder body 3 can be controlled to extend out, and otherwise, the retraction can be controlled; the oil is fed from the third rodless cavity oil port 7, the oil is discharged from the second rod cavity oil port 9, the three-stage cylinder body 4 can be controlled to extend, and otherwise, the retraction can be controlled. When three-level synchronous stretching is needed, oil is supplied to all levels of cylinders at the same time, so that the erecting time can be greatly shortened, the erecting efficiency is improved, and the work can be finished more efficiently and quickly. In addition, each stage of cylinder body can independently supply oil to realize extension and retraction, and the erection time of each stage can be distributed according to the proportion, so that the adjustable range and the accuracy of erection are greatly improved.

In order to ensure that the stroke of the three-stage cylinder can not be affected on the premise of realizing the functions, an oil pipe 101 is arranged at the center of the bottom in the outer cylinder body 1 in the embodiment, the bottom of the oil pipe 101 is communicated with the second rodless cavity oil port 6, a central hole 201 is formed in the bottom of the first-stage cylinder body 2, a sealing element is arranged in the central hole 201, the oil pipe 101 is in sliding fit in the central hole 201, an upper end port of the oil pipe 101 is communicated with the second-stage rodless cavity 20, namely the first-stage cylinder body 2 can slide along the oil pipe 101 during telescopic motion in the outer cylinder body 1, and oil can be better supplied to the second-stage rodless cavity 20 independently due to the existence of the oil pipe 101. Meanwhile, an avoidance pipe 33 which extends upwards and is closed at the top is formed in the center of the bottom of the secondary cylinder body 3, the avoidance pipe 33 is directly communicated with the secondary rodless cavity 20, and the oil pipe 101 extends upwards into the avoidance pipe 33, so that the telescopic stroke between the cylinder bodies can be increased to the maximum extent. Meanwhile, a flange 330 is formed on the periphery of the top end of the avoiding pipe 33, a sealing element is arranged on the outer side of the flange 330, the tertiary cylinder body 4 is in a bottom opening shape and is sleeved on the avoiding pipe 33, the inner wall of the tertiary cylinder body 4 is in sliding fit with the flange 330, a tertiary rodless cavity communicating oil port 331 is further formed in the upper end of the avoiding pipe 33, the tertiary rodless cavity communicating oil port 331 can enable a third rodless cavity oil port 7 to be communicated with the tertiary rodless cavity 30, independent control and smooth stretching of the tertiary cylinder body 4 can be guaranteed through the design, and the stretching stroke can be improved to the maximum extent.

In order to further improve the extending stroke, the secondary cylinder 3 and the tertiary cylinder 4 in this embodiment may be of a double-layer composite cylinder structure, wherein a first gap passage 32 is formed between an inner layer and an outer layer of the secondary cylinder 3, a first communicating oil port 321 for communicating the secondary rod chamber 21 and the first gap passage 32 is formed at a lower portion of the outer layer of the secondary cylinder 3, a second communicating oil port 322 for communicating the tertiary rod chamber 31 and the first gap passage 32 is formed at an upper portion of the inner layer of the secondary cylinder 3, a second gap passage 40 is formed between the inner layer and the outer layer of the tertiary cylinder 4, a third communicating oil port 401 for communicating the tertiary rod chamber 31 and the second gap passage 40 is formed at a lower portion of the outer layer of the tertiary cylinder 4, and a fourth communicating oil port 402 for communicating the second rod chamber 9 and the second gap passage 40 is formed at an upper portion of the inner layer of the tertiary cylinder 4. The design can improve the maximum extending stroke of the secondary cylinder body 3 and the tertiary cylinder body 4, improve the application range, and simultaneously, the secondary rod cavity 21 and the tertiary rod cavity 31 share the second rod cavity oil port 9, so that the tertiary synchronous extending cannot be influenced.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above embodiments further describe the technical problems, technical solutions and advantages of the present invention in detail, it should be understood that the above only are embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (9)

1. A fast synchronous multistage cylinder which is characterized in that: the cylinder comprises an outer cylinder body (1), a first-stage cylinder body (2) in sliding fit with the outer cylinder body (1), a second-stage cylinder body (3) in sliding fit with the first-stage cylinder body (2) and a third-stage cylinder body (4) in sliding fit with the second-stage cylinder body (3), wherein a first-stage rodless cavity (10) and a first-stage rod cavity (11) are formed between the outer cylinder body (1) and the first-stage cylinder body (2), a second-stage rodless cavity (20) and a second-stage rod cavity (21) are formed between the first-stage cylinder body (2) and the second-stage cylinder body (3), and a third-stage rodless cavity (30) and a third-stage rod cavity (31) are formed between the second-stage cylinder body (3) and the third-stage cylinder body (4);

the hydraulic cylinder is characterized in that a first rodless cavity oil port (5) and a second rodless cavity oil port (6) are formed in the bottom of the outer cylinder body (1), a first rod-containing cavity oil port (8) is formed in the side wall of the outer cylinder body (1), a third rodless cavity oil port (7) and a second rod-containing cavity oil port (9) are formed in the top of the three-level cylinder body (4), the first rodless cavity oil port (5) is communicated with a first-level rodless cavity (10), the second rodless cavity oil port (6) is communicated with a second-level rodless cavity (20), the third rodless cavity oil port (7) is communicated with a third-level rodless cavity (30), the first rod-containing cavity oil port (8) is communicated with a first-level rod-containing cavity (11), the second rod-containing cavity (9) is communicated with a third-level rod-containing cavity (31), and the third-level rod-containing cavity (31) is communicated with a second-level rod-containing cavity (21).

2. The fast synchronizing multistage cylinder according to claim 1, characterized in that: first uide bushing (100) is installed to outer cylinder body (1) port, one-level cylinder body (2) lower extreme and outer cylinder body (1) inner wall sliding fit, one-level cylinder body (2) lateral wall and first uide bushing (100) inner wall sliding fit.

3. The fast synchronizing multistage cylinder according to claim 1, characterized in that: second uide bushing (200) is installed to one-level cylinder body (2) up end mouth, second grade cylinder body (3) lower extreme and one-level cylinder body (2) inner wall sliding fit, second grade cylinder body (3) lateral wall and second uide bushing (200) inner wall sliding fit.

4. The fast synchronizing multistage cylinder according to claim 1, characterized in that: third uide bushing (300) is installed to second grade cylinder body (3) up end mouth, tertiary cylinder body (4) lower extreme and second grade cylinder body (3) inner wall sliding fit, tertiary cylinder body (4) lateral wall and third uide bushing (300) inner wall sliding fit.

5. The fast synchronizing multistage cylinder according to claim 1, characterized in that: an oil pipe (101) is arranged at the center of the bottom in the outer cylinder body (1), the bottom of the oil pipe (101) is communicated with the second rodless cavity oil port (6), a center hole (201) is formed in the bottom of the first-stage cylinder body (2), the oil pipe (101) is in sliding fit in the center hole (201), and the upper end port of the oil pipe (101) is communicated with the second rodless cavity (20).

6. The fast synchronizing multistage cylinder according to claim 5, characterized in that: the center of the bottom of the secondary cylinder body (3) is provided with an upward extending and top-closed avoiding pipe (33), the avoiding pipe (33) is communicated with the secondary rodless cavity (20), and the oil pipe (101) upwards extends into the avoiding pipe (33).

7. The fast synchronizing multistage cylinder according to claim 6, characterized in that: a flange (330) is formed on the peripheral side of the top end of the avoiding pipe (33), the three-stage cylinder body (4) is in an open bottom shape, the avoiding pipe (33) is sleeved with the three-stage cylinder body (4), and the inner wall of the three-stage cylinder body (4) is in sliding fit with the flange (330);

the upper end of the avoidance pipe (33) is further provided with a third rodless cavity communicating oil port (331), and the third rodless cavity oil port (7) can be communicated with the third rodless cavity (30) through the third rodless cavity communicating oil port (331).

8. The fast synchronizing multistage cylinder according to claim 1, characterized in that: the two-stage cylinder body (3) is of a double-layer composite cylinder body structure, a first clearance channel (32) is formed between the inner layer and the outer layer of the two-stage cylinder body (3), a first communicating oil port (321) for communicating the two-stage rod cavity (21) and the first clearance channel (32) is formed in the lower portion of the outer layer of the two-stage cylinder body (3), and a second communicating oil port (322) for communicating the three-stage rod cavity (31) and the first clearance channel (32) is formed in the upper portion of the inner layer of the two-stage cylinder body (3).

9. The fast synchronizing multistage cylinder according to claim 8, characterized in that: the three-stage cylinder body (4) is of a double-layer composite cylinder body structure, a second gap channel (40) is formed between the inner layer and the outer layer of the three-stage cylinder body (4), a third communicating oil port (401) communicated with the three-stage rod cavity (31) and the second gap channel (40) is formed in the lower portion of the outer layer of the three-stage cylinder body (4), and a fourth communicating oil port (402) communicated with the second rod cavity oil port (9) and the second gap channel (40) is formed in the upper portion of the inner layer of the three-stage cylinder body (4).

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