CN213039559U

CN213039559U - Oil engine

Info

Publication number: CN213039559U
Application number: CN202021777300.8U
Authority: CN
Inventors: 魏波
Original assignee: Sichuan Kony Technology Co ltd
Current assignee: Sichuan Kony Technology Co ltd
Priority date: 2020-08-21
Filing date: 2020-08-21
Publication date: 2021-04-23
Anticipated expiration: 2030-08-21

Abstract

The utility model discloses a servomotor, which comprises a cylinder body, a top cover, a bottom cover, a piston rod, a plurality of adjusting rings and a plurality of fixed rods, wherein the cylinder body is a cavity with two unsealed ends; the inner side wall of the adjusting ring cylinder body is in sliding fit, a plurality of through holes B are formed in the end face of the adjusting ring cylinder body, each through hole B comprises a large hole and a small hole, the large holes and the small holes are communicated, the joint of the large holes and the small holes is a conical surface A, the fixed rod comprises a rod body and a limiting head, the limiting head is clamped in the large holes, the rod body penetrates through the through holes B to be connected with the bottom cover, the limiting head comprises the conical surface B, and the conical; a positioning rod is arranged on one side of the piston close to the bottom cover, and a positioning groove matched with the positioning rod is arranged on the bottom cover; the stroke of the servomotor can be adjusted.

Description

Oil engine

Technical Field

The utility model relates to a thermal power technology field is an oil motivation particularly.

Background

The hydraulic servomotor, also known as a hydraulic servo cylinder with a function block, is used for an actuating mechanism of a hydraulic device and mainly comprises the servo cylinder, the function block, a servo valve, a feedback mechanism and the like. It has the characteristics of small inertia, large driving force, quick action, low energy consumption and the like. The existing oil engine has the defects that: because the output force and the stroke requirements of the servomotor are different, the existing servomotor is designed separately and nonstandard, and the used parts cannot be unified due to the parameter change of the servomotor, so that the mass production is difficult.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned shortcomings of the prior art, the present invention is directed to: provided is a servomotor, the stroke of which can be adjusted.

In order to realize the purpose of the utility model, the utility model provides a following technical scheme:

a servomotor comprises a cylinder body, a top cover, a bottom cover, a piston rod, a plurality of adjusting rings and a plurality of fixing rods, wherein the cylinder body is a cavity with two unsealed ends;

the adjusting rings are of annular structures, the outer side walls of the adjusting rings are in sliding fit with the inner side walls of the cylinder body, a plurality of through holes B are formed in the end surfaces of the adjusting rings, the end surfaces of adjacent adjusting rings are in contact connection, each through hole B comprises a large hole and a small hole, the large holes and the small holes are communicated, the joint of the large holes and the small holes is a conical surface A, the large end of each conical surface A is close to the top cover, each fixing rod comprises a rod body and a limiting head, the limiting heads are clamped in the large holes, the rod bodies penetrate through the through holes B to be connected with the bottom cover, the limiting heads comprise conical surfaces B, and;

a positioning rod is arranged on one side, close to the bottom cover, of the piston, and a positioning groove matched with the positioning rod is formed in the bottom cover;

the oil cylinder is characterized in that an oil passage A is formed in the top cover, an oil passage B is formed in the bottom cover, and the oil passage A, the oil passage B and the cylinder body are communicated with each other.

Further, the bottom cover further comprises a plurality of fixing nuts A, a plurality of through holes C are correspondingly formed in the bottom cover and the through holes B, threads are formed in the side wall of the rod body of the fixing rod, the rod body penetrates through the bottom cover and then is connected with the fixing nuts A through threads, and the bottom cover is clamped between the adjusting ring and the fixing nuts A.

Further, the end heads at the two ends of the cylinder body are respectively provided with a boss A, the top cover is provided with a boss B, the bottom cover is provided with a boss C, the boss A and the boss B are in contact connection, and the boss A and the boss C are in contact connection.

Furthermore, the number of the fixing nuts A connected with any fixing rod is more than one.

Further, the through holes B are arranged in an equally spaced annular array on the adjusting ring.

Further, in the cylinder body, a sealing ring is arranged at the junction of the piston rod and the top cover.

Further, the stopper is disposed entirely within the bore.

Compared with the prior art, the utility model, following beneficial effect has:

1. the distance between the piston and the bottom cover can be adjusted by increasing or decreasing the number of the adjusting rings, so that the purpose of adjusting the stroke of the piston rod is achieved, and the purpose of adjusting the stroke of the piston is further achieved.

2. The locating groove on the bottom cover and the locating rod are concentrically arranged, when the locating rod penetrates through the adjusting ring, the locating rod is partially arranged in the locating groove, the outer wall of the locating rod is in sliding fit with the inner wall of the locating groove, and the locating rod is prevented from abutting against the bottom cover due to the fact that the number of the adjusting ring is small, and damage is caused to the bottom cover.

Drawings

FIG. 1 is a structural diagram of a servomotor of the present invention;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is a view showing a structure of a fixing lever;

fig. 4 is a view of the adjusting ring.

List of reference numerals

1-a piston rod, 2-a piston, 3-a positioning rod, 4-an adjusting ring, 5-a fixing rod, 6-a fixing nut A, 7-a bottom cover, 8-a boss C, 9-a boss A, 10-a boss B, 11-a sealing ring, 12-an oil through channel A, 13-an oil through channel B, 14-a top cover, 15-a cylinder body, 401-a through hole B, 402-a conical surface A, 501-a limiting head and 502-a conical surface B.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. 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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may include, for example, a fixed connection, an integral connection, or a detachable connection; may be communication within two elements; they may be directly connected or indirectly connected through an intermediate, and those skilled in the art can understand the specific meaning of the above terms in the present invention in specific situations.

As shown in fig. 1 to 4, an oil-operated machine includes a cylinder 15, a top cover 14, a bottom cover 7, a piston 2, a piston rod 1, a plurality of adjusting rings 4, and a plurality of fixing rods 5, wherein the cylinder 15 is a cavity with two unsealed ends, the top cover 14 and a rear cover are respectively connected with two ends of the cylinder 15 for sealing the cylinder 15, the piston 2 is in sliding fit with an inner side wall of the cylinder 15, a through hole a is formed in the top cover 14, the piston rod 1 is in sliding fit with a side wall of the through hole a, the piston rod 1 is partially disposed in the cylinder 15 through the through hole a in the top cover 14, and the piston rod 1 is connected with the piston 2;

the adjusting ring 4 is of an annular structure, the outer side wall of the adjusting ring is in sliding fit with the inner side wall of the cylinder body 15, a plurality of through holes B401 are formed in the end surface of the adjusting ring 4, the end surfaces of adjacent adjusting rings are in contact connection, each through hole B401 comprises a large hole and a small hole, the large holes and the small holes are communicated, the joint of the large holes and the small holes is a conical surface A402, the large end of the conical surface A402 is close to the top cover 14, the fixing rod 5 comprises a rod body and a limiting head 501, the limiting head 501 is clamped in the large holes, the rod body penetrates through the through holes B401 to be connected with the bottom cover 7, the limiting head 501 comprises a conical surface B502, and the;

a positioning rod 3 is arranged on one side, close to the bottom cover 7, of the piston 2, and a positioning groove matched with the positioning rod 3 is formed in the bottom cover 7;

the top cover 14 is provided with an oil passage A12, the bottom cover 7 is provided with an oil passage B13, and the oil passage A12 and the oil passage B13 are communicated with the interior of the cylinder 15.

The utility model discloses a theory of operation does: the piston 2 separates the inside of the cylinder body 15 into two chambers, the chamber close to the top cover 14 is an upper cylinder chamber, the chamber close to the bottom cover 7 is a lower cylinder chamber, after pressure oil is introduced into the upper cylinder chamber through the oil passage A12, the piston 2 moves towards the bottom cover 7 under the action of oil pressure, in the utility model, the inner space of the adjusting ring 4 at least enables the positioning rod 3 to pass through the inside of the adjusting ring 4, when the positioning rod 3 is in the adjusting ring 4, the end surface butt of the piston 2 and the adjusting ring 4 can adjust the distance between the piston 2 and the bottom cover 7 by increasing or decreasing the number of the adjusting ring 4, thereby achieving the purpose of adjusting the stroke of the piston rod 1, and further achieving the purpose of adjusting the stroke of the piston 2, the positioning groove on the bottom cover 7 and the positioning rod 3 are concentrically arranged, after the positioning rod 3 passes through the adjusting ring 4, the positioning rod 3 is partially arranged in the positioning groove, and the outer wall of the positioning rod 3 is in sliding fit with the inner wall of the positioning groove, so that the positioning rod 3 is prevented from abutting against the bottom cover 7 when the number of the adjusting rings 4 is small, and the bottom cover 7 is prevented from being damaged.

The adjusting ring 4 is connected with the bottom cover 7 through the fixing rod 5, when in use, the end surfaces of a plurality of adjusting rings 4 are in contact connection, the through hole B401 on each adjusting ring 4 is rotated to be concentric, then the rod body of each fixing rod 5 sequentially passes through the through hole B401 on the adjusting ring 4 from the adjusting ring 4 farthest from the bottom cover 7, finally the rod body of the fixing rod 5 is connected with the bottom cover 7, the limiting head 501 is clamped in the through hole B401 of the adjusting ring 4 farthest from the bottom cover 7, the purpose of fixing the adjusting ring 4 is realized, the conical surface B502 of the limiting head 501 and the conical surface A402 of the through hole B401 are attached, the contact area of the limiting head 501 and the adjusting ring 4 is increased, the connection strength of the limiting head 501 and the adjusting ring 4 is further increased, and the contact area of the limiting head 501 and the adjusting ring 4 is increased, so that there is good sealing between the regulating ring 4 and the regulating head 501, preventing pressure oil from flowing into the through hole B401 from the gap between the regulating ring 4 and the regulating head 501.

Further, the bottom cover 7 further comprises a plurality of fixing nuts a6, a plurality of through holes C are correspondingly formed in the bottom cover 7 and the through holes B401, threads are formed in the side wall of the rod body of the fixing rod 5, the rod body penetrates through the bottom cover 7 and then is in threaded connection with the fixing nuts a6, and the bottom cover 7 is clamped between the adjusting ring 4 and the fixing nuts a 6.

The body of rod passes through-hole C passes bottom 7, the body of rod lateral wall with through-hole C's inside wall sliding fit will afterwards fixation nut A6 cover is established on the body of rod lateral wall and screw up, will adjustable ring 4, bottom 7 press from both sides and establish between spacing head 501, fixation nut A6 the utility model discloses in, fixation nut A6 with be provided with the sealing washer between the bottom 7, increase the leakproofness of hydro-cylinder cavity of resorption.

Further, bosses A9 are respectively arranged at two end heads of the cylinder body 15, a boss B10 is arranged on the top cover 14, a boss C8 is arranged on the bottom cover 7, the boss A9 and the boss B10 are in contact connection, and the boss A9 and the boss C8 are in contact connection.

The abutment of the bosses A9 and B10 increases the contact area between the top cover 14 and the cylinder body 15, and the abutment of the bosses A9 and C8 increases the contact area between the bottom cover 7 and the cylinder body 15, thereby increasing the connection strength between the top cover 14 and the cylinder body 15, and between the bottom cover 7 and the cylinder body 15, respectively.

Further, the number of the fixing nuts a6 connected with any fixing rod 5 is more than one.

The utility model discloses in, the quantity of fixation nut A6 on the dead lever 5 is two, and two fixation nut A6 are after screwing up, and the axial force that produces between fixation nut A6 makes the frictional force increase between nut tooth and the bolt tooth and prevents fixation nut A6 is automatic to be loosened and takes off.

Further, the through holes B401 are arranged in an equally spaced annular array on the adjusting ring 4.

Through equidistant setting through-hole B401, every dead lever 5 is on average to the moment of adjustable ring 4 increases joint strength.

Further, a sealing ring 11 is arranged at the junction of the piston rod 1 and the top cover 14 in the cylinder body 15.

By providing the seal ring 11, leakage of pressure oil from the interface between the piston rod 1 and the top cap 14 is prevented.

Further, the retaining head 501 is disposed entirely within the bore.

By completely immersing the limiting head 501 into the large hole, the sliding fit relation between the piston 2 and the inner wall of the cylinder 15 is prevented from being damaged due to the action of the limiting head 501 when the piston 2 and the adjusting ring 4 are abutted.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the embodiments in the above description, and the technical concept of the present invention can be within the scope of the present invention, and can be modified to various simple modifications, and these simple modifications all belong to the protection scope of the present invention. It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the present invention does not need to describe any combination of the features. In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.

Claims

1. An oil-operated machine, characterized in that: the piston rod fixing device comprises a cylinder body (15), a top cover (14), a bottom cover (7), a piston (2), a piston rod (1), a plurality of adjusting rings (4) and a plurality of fixing rods (5), wherein the cylinder body (15) is a cavity with two unsealed ends, the top cover (14) and a rear cover are respectively connected with the two ends of the cylinder body (15) and used for sealing the cylinder body (15), the piston (2) is in sliding fit with the inner side wall of the cylinder body (15), a through hole A is formed in the top cover (14), the piston rod (1) is in sliding fit with the side wall of the through hole A, the piston rod (1) penetrates through the through hole A in the top cover (14) and is partially arranged in the cylinder body (15), and the piston rod (1) is connected with the piston (2);

the adjusting ring (4) is of an annular structure, the outer side wall of the adjusting ring is in sliding fit with the inner side wall of the cylinder body (15), a plurality of through holes B (401) are formed in the end face of the adjusting ring, the end faces of adjacent adjusting rings (4) are in contact connection, each through hole B (401) comprises a large hole and a small hole, the large holes and the small holes are communicated, the joint of the large holes and the small holes is a conical surface A (402), the large end of the conical surface A (402) is close to the top cover (14), the fixing rod (5) comprises a rod body and a limiting head (501), the limiting head (501) is clamped in the large holes, the rod body penetrates through the through holes B (401) and is connected with the bottom cover (7), the limiting head (501) comprises a conical surface B (502), and the conical surfaces A (402;

a positioning rod (3) is arranged on one side, close to the bottom cover (7), of the piston (2), and a positioning groove matched with the positioning rod (3) is formed in the bottom cover (7);

an oil passage A (12) is formed in the top cover (14), an oil passage B (13) is formed in the bottom cover (7), and the oil passage A (12), the oil passage B (13) and the cylinder body (15) are communicated with each other.

2. The servomotor of claim 1, wherein: bottom (7) still include a plurality of fixation nut A (6), be provided with a plurality of through-holes C on bottom (7) with through-hole B (401) corresponds, the body of rod lateral wall of dead lever (5) is provided with the screw thread, the body of rod passes behind bottom (7) with fixation nut A (6) pass through threaded connection, bottom (7) press from both sides and establish between adjustable ring (4), fixation nut A (6).

3. The servomotor of claim 2, wherein: the cylinder body (15) both ends end is provided with boss A (9) respectively, be provided with boss B (10) on top cap (14), be provided with boss C (8) on bottom (7), boss A (9), boss B (10) contact are connected, boss A (9), boss C (8) contact are connected.

4. A servomotor according to claim 3, wherein: the number of the fixing nuts A (6) connected with any fixing rod (5) is more than one.

5. The servomotor of claim 4, wherein: the through holes B (401) are arranged in an equally spaced annular array on the adjusting ring (4).

6. The servomotor of claim 5, wherein: in the cylinder body (15), a sealing ring (11) is arranged at the junction of the piston rod (1) and the top cover (14).

7. The servomotor of claim 6, wherein: the retaining head (501) is disposed entirely within the bore.