Hydraulic cylinder with adjustable stroke limiting mechanism

Abstract

The utility model provides a hydraulic cylinder with an adjustable stroke limiting mechanism, which relates to the technical field of hydraulic cylinders and comprises a hydraulic cylinder body, a sealing end cover is mounted at the top end of the hydraulic cylinder body, a hydraulic cylinder adjusting and limiting component is arranged on the inner side of the hydraulic cylinder body, and a spring limiting connecting frame is welded on the inner wall of the sealing end cover. Buffer springs are welded to the lower sides of the spring limiting connecting frames correspondingly, buffer rings are welded to the tail ends of the buffer springs correspondingly, threaded grooves are formed in the top ends of the sealing end covers correspondingly, and limiting screws are installed on the inner sides of the threaded grooves correspondingly. As the piston rod stretches out and draws back, the piston piece at the tail end of the piston rod can make contact with the buffering ring, impact force is effectively relieved through compression and release of the buffering spring, the limiting screw is screwed into or screwed out of the threaded groove according to the requirement of a user for the stretching height of the piston rod, and therefore the rebounding depth of the buffering ring is adjusted, and the stretching limit of the piston rod is accurately controlled.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic cylinder technical field especially relates to a kind of adjustable stroke limiting mechanism's hydraulic cylinder of taking. BACKGROUND

[0002] Hydraulic cylinder is a kind of hydraulic energy conversion into mechanical energy, do linear reciprocating motion or swing motion hydraulic actuator, it is simple in structure, reliable in operation, is widely used in the hydraulic system of various machines, such as engineering machinery, mining machinery, metallurgical equipment etc., its basic structure includes cylinder, cylinder cover, piston, piston rod and other parts.

[0003] After searching, the case of announcement number "CN222633550U" mentioned "the utility model provides a double self-locking hydraulic cylinder, belongs to the technical field of hydraulic cylinder, including cylinder and piston rod, the top of cylinder is fixedly connected with the annular lock cover that is sleeved on the outside of piston rod, the outer wall of annular lock cover is fixedly connected with the support that is arranged at the top of cylinder, the inner cavity of annular lock cover is rotatably provided with annular clamping seat, the circumferential inner wall of annular clamping seat is fixedly installed with self-locking piece, the outer wall of piston rod is longitudinally and uniformly provided with the clamping groove corresponding with self-locking piece, the inner cavity of support is provided with the rotary clamping assembly that drives annular clamping seat to rotate", when using, when piston rod extends to corresponding position, annular clamping seat is driven to rotate in the inner cavity of annular lock cover by rotary clamping assembly, so that annular clamping seat drives self-locking piece to be clamped into the clamping groove in corresponding position, so as to ensure the stability of the position where piston rod extends, the position of piston rod is locked on both sides, to avoid position change.

[0004] However, the traditional hydraulic cylinder has certain limitations when in use, especially in the accurate control of the stroke range of piston rod. The existing hydraulic cylinder often adjusts the stroke by adjusting the supply of hydraulic oil, which may cause excessive expansion during use, thereby affecting the stability of the use environment of the hydraulic cylinder.

[0005] Therefore, we provide a kind of adjustable stroke limiting mechanism's hydraulic cylinder to solve the above problems. Utility model content

[0006] In order to make up for the above shortcomings, the utility model provides a kind of adjustable stroke limiting mechanism's hydraulic cylinder.

[0007] To achieve the above purpose, the utility model provides the following technical scheme:

[0008] The utility model provides a hydraulic cylinder with adjustable stroke limiting mechanism, including hydraulic cylinder body, the top of hydraulic cylinder body is equipped with sealed end cover, the inside of hydraulic cylinder body is provided with hydraulic cylinder adjusting limiting component, hydraulic cylinder adjusting limiting component includes the bottom connecting table of welding in the left and right sides of hydraulic cylinder body bottom, the left and right sides of sealed end cover all are welded with top connecting table, the inside of hydraulic cylinder body is installed with piston rod, the outside of piston rod upper end is provided with limiting baffle, the above of limiting baffle is provided with baffle limiting plate, the outside of baffle limiting plate all is provided with limiting plate limiting bolt, the inner wall of sealed end cover is welded with spring limiting connecting frame, the downside of spring limiting connecting frame all is welded with buffer spring, the end of buffer spring is welded with buffer ring, the top of sealed end cover all is provided with threaded groove, the inside of threaded groove all is installed with limiting screw rod.

[0009] As a further description of the above technical solutions:

[0010] The middle of the top connecting table and the bottom connecting table penetrates a fastening screw, and the fastening screw is symmetrically arranged on the left and right sides of the top connecting table and the bottom connecting table.

[0011] As a further description of the above technical solutions:

[0012] The outer side of the limiting baffle is threadedly connected with a baffle locking bolt, the limiting baffle is sleeved with the piston rod, and the baffle limiting plate and the limiting baffle form a limiting structure through the piston rod.

[0013] As a further description of the above technical solutions:

[0014] The bottom end of the limiting plate limiting bolt is threadedly connected with the top connecting table, and the limiting plate limiting bolt is provided with a nut on the upper and lower sides of the baffle limiting plate.

[0015] As a further description of the above technical solutions:

[0016] The buffer ring is sleeved with the spring limiting connecting frame and the piston rod, the buffer springs are arranged in four groups at equal distances, and the buffer ring and the spring limiting connecting frame form a buffer structure through the buffer springs.

[0017] As a further description of the above technical solutions:

[0018] The limiting screw rod is threadedly connected with the threaded groove, the limiting screw rod is located in the middle of the two groups of buffer springs, the limiting screw rod penetrates the spring limiting connecting frame, the end of the limiting screw rod limits the buffer ring, and the limiting screw rod is arranged in four groups at equal distances.

[0019] As a further description of the above technical solutions:

[0020] The upper side of the screw groove is provided with an adjusting nut, and the adjusting nut is in threaded connection with the limiting screw rod.

[0021] Compared with the prior art, the utility model has the beneficial effects that:

[0022] 1、The utility model discloses a hydraulic cylinder adjusting limiting assembly, when needing to use, the limiting baffle can move up and down along the piston rod according to the use demand, and the fixed position is adjusted through the baffle locking bolt, cooperates the limiting of baffle limiting plate, can play the limiting effect, also can make the staff more intuitive understanding to the advancing height, through the position of baffle limiting plate on the limiting plate limiting bolt, cooperates the height control of limiting baffle, and through two groups of nuts, the baffle limiting plate is fixed to the limiting plate limiting bolt, ensure that the limiting structure is stable and reliable, the stroke range of piston rod is accurately adjusted.

[0023] 2、The utility model discloses a hydraulic cylinder adjusting limiting assembly, when needing to use, along with the telescoping of piston rod, the piston sheet of piston rod end will contact the buffer ring, through the compression and release of buffer spring, effectively slow down the impact force, protect the internal structure of hydraulic cylinder body, prolong the service life, according to the telescoping height demand of use personnel to piston rod, the limiting screw rod is screwed into or screwed out the screw groove, thereby adjusting the depth of rebound of buffer ring, the telescoping limit of piston rod is accurately controlled, and through the rotation adjusting nut, the fastening degree of limiting screw rod can be fine -tuned, ensure the stability of limiting structure. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the overall appearance structure schematic diagram of the utility model;

[0025] Figure 2 It is the opening structure schematic diagram of limiting baffle and limiting plate limiting bolt of the utility model;

[0026] Figure 3 It is the cooperation structure schematic diagram of baffle limiting plate and buffer ring of the utility model;

[0027] Figure 4 It is the bottom structure schematic diagram of buffer ring of the utility model;

[0028] Figure 5 It is the cooperation structure schematic diagram of limiting baffle and limiting plate limiting bolt of the utility model;

[0029] Figure 6 It is the cooperation structure schematic diagram of buffer ring and limiting screw rod of the utility model.

[0030] The figure label: 1, hydraulic cylinder body; 2, sealing end cover; 3, hydraulic cylinder adjusting limiting assembly; 301, bottom connecting table; 302, top connecting table; 303, fastening screw; 304, piston rod; 305, limiting baffle; 306, baffle locking bolt; 307, baffle limiting plate; 308, limiting plate limiting bolt; 309, spring limiting connecting frame; 310, buffer spring; 311, buffer ring; 312, threaded groove; 313, limiting screw; 314, adjusting nut. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0032] Please refer to Figures 1-6 The utility model provides a kind of technical scheme: a kind of hydraulic cylinder with adjustable stroke limiting mechanism, including hydraulic cylinder body 1, the top of hydraulic cylinder body 1 is equipped with sealing end cover 2, the inner side of hydraulic cylinder body 1 is provided with hydraulic cylinder adjusting limiting assembly 3, hydraulic cylinder adjusting limiting assembly 3 includes the bottom connecting table 301 welded in the bottom left and right sides of hydraulic cylinder body 1, the left and right sides of sealing end cover 2 are all welded with top connecting table 302, the inner side of hydraulic cylinder body 1 is equipped with piston rod 304, the upper end outer side of piston rod 304 is provided with limiting baffle 305, the top of limiting baffle 305 is provided with baffle limiting plate 307, the outer side of baffle limiting plate 307 is all provided with limiting plate limiting bolt 308, the inner wall of sealing end cover 2 is welded with spring limiting connecting frame 309, the lower side of spring limiting connecting frame 309 is all welded with buffer spring 310, the end of buffer spring 310 is welded with buffer ring 311, the top of sealing end cover 2 is all provided with threaded groove 312, the inner side of threaded groove 312 is all equipped with limiting screw 313.

[0033] Further, the middle of top connecting table 302 and bottom connecting table 301 is penetrated by fastening screw 303, fastening screw 303 is symmetrically arranged with top connecting table 302 and bottom connecting table 301 left and right sides, when needing to use, by fastening screw 303 to the top connecting table 302 and bottom connecting table 301 are fixed, can improve the overall stability of sealing end cover 2 and hydraulic cylinder body 1, avoid in the process of use, due to the limiting structure long time operation leads to sealing end cover 2 loosening or displacement.

[0034] Furthermore, the outer side of the limiting baffle 305 is threaded with a baffle locking bolt 306. The limiting baffle 305 and the piston rod 304 are sleeved together. The baffle limiting plate 307 and the limiting baffle 305 form a limiting structure through the piston rod 304. When needed, the limiting baffle 305 can move up and down along the piston rod 304 according to the usage requirements, and the position can be fixed by adjusting the baffle locking bolt 306. It works with the baffle limiting plate 307 to limit the movement, which can not only limit the movement, but also allow the staff to more intuitively understand the travel height.

[0035] Furthermore, the bottom end of the limiting plate limiting bolt 308 is threadedly connected to the top connecting platform 302. Nuts are provided on both the upper and lower sides of the baffle limiting plate 307. When needed, the position of the baffle limiting plate 307 on the limiting plate limiting bolt 308 is adjusted in conjunction with the height control of the limiting baffle 305. The baffle limiting plate 307 is fixed to the limiting plate limiting bolt 308 by two sets of nuts, ensuring that the limiting structure is stable and reliable and accurately adjusting the stroke range of the piston rod 304.

[0036] Furthermore, the buffer ring 311 is sleeved with the spring limiting connecting bracket 309 and the piston rod 304. The buffer springs 310 are arranged in four groups at equal distances. The buffer ring 311 and the spring limiting connecting bracket 309 form a buffer structure through the buffer springs 310. When it is needed, as the piston rod 304 extends and retracts, the piston plate at the end of the piston rod 304 will contact the buffer ring 311. Through the compression and release of the buffer springs 310, the impact force is effectively reduced, the internal structure of the hydraulic cylinder body 1 is protected, and the service life is extended.

[0037] Furthermore, the limiting screw 313 and the threaded groove 312 are connected by a thread. The limiting screw 313 is located between the two sets of buffer springs 310. The limiting screw 313 passes through the spring limiting connecting bracket 309. The end of the limiting screw 313 limits the buffer ring 311. The limiting screws 313 are arranged in four sets at equal distances. When needed, the limiting screw 313 is screwed into or out of the threaded groove 312 according to the user's requirements for the extension and retraction height of the piston rod 304, thereby adjusting the rebound depth of the buffer ring 311 and precisely controlling the extension and retraction limit of the piston rod 304.

[0038] Furthermore, an adjusting nut 314 is provided on the upper side of the threaded groove 312. The adjusting nut 314 is threadedly connected to the limiting screw 313. When needed, the tightness of the limiting screw 313 can be finely adjusted by rotating the adjusting nut 314 to ensure the stability of the limiting structure.

[0039] Working principle: when need to use, the hydraulic cylinder body 1 is placed to need to use the position, and according to the required stroke, first the height adjustment of the limiting screw rod 313 in four groups of threaded grooves 312 is carried out, and the limiting screw rod 313 is positioned by adjusting nut 314, then according to the spiral depth of limiting screw rod 313, the limiting baffle 305 is adjusted to the corresponding height position of piston rod 304, and is fixed by baffle locking bolt 306, and according to the height of limiting baffle 305, the height adjustment of baffle limiting plate 307 is carried out along the limiting plate limiting bolt 308, and the baffle limiting plate 307 is positioned by four groups of bolts, after preparation, along with the hydraulic oil pump into the hydraulic cylinder body 1, the sealing end cover 2 is fastened by fastening screw 303 with bottom connecting table 301 and top connecting table 302, at this time the piston rod 304 will push up, so as to contact the buffer ring 311, drive the buffer ring 311 upwards, limit by the buffer spring 310 connected under the sealing end cover 2, along with the buffer ring 311 upwards, finally will top to the end of limiting screw rod 313, carry out stroke limiting, in this way the use process of a kind of adjustable stroke limiting mechanism's hydraulic cylinder is completed.

[0040] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A hydraulic cylinder with adjustable stroke stop mechanism comprising a hydraulic cylinder body (1), characterized in that: The top end of the hydraulic cylinder body (1) is provided with a sealing end cover (2), the inner side of the hydraulic cylinder body (1) is provided with a hydraulic cylinder adjusting limiting assembly (3), the hydraulic cylinder adjusting limiting assembly (3) comprises a bottom connecting table (301) welded on the left and right sides of the bottom end of the hydraulic cylinder body (1), the left and right sides of the sealing end cover (2) are welded with a top connecting table (302), the inner side of the hydraulic cylinder body (1) is provided with a piston rod (304), the outer side of the upper end of the piston rod (304) is provided with a limiting baffle (305), the upper side of the limiting baffle (305) is provided with a baffle limiting plate (307), the outer side of the baffle limiting plate (307) is provided with a limiting plate limiting bolt (308), the inner wall of the sealing end cover (2) is welded with a spring limiting connecting frame (309), the lower side of the spring limiting connecting frame (309) is welded with a buffer spring (310), the end of the buffer spring (310) is welded with a buffer ring (311), the top end of the sealing end cover (2) is provided with a threaded groove (312), and the inner side of the threaded groove (312) is provided with a limiting screw rod (313).

2. The hydraulic cylinder with adjustable stroke stop mechanism according to claim 1, characterized in that, The middle of the top connecting table (302) and the bottom connecting table (301) penetrates a fastening screw (303), and the fastening screw (303) is symmetrically arranged on the left and right sides of the top connecting table (302) and the bottom connecting table (301).

3. The hydraulic cylinder with adjustable stroke stop mechanism according to claim 1, characterized in that, The outer side of the limiting baffle (305) is threadedly connected with a baffle locking bolt (306), the limiting baffle (305) and the piston rod (304) are sleeved, and the baffle limiting plate (307) and the limiting baffle (305) constitute a limiting structure through the piston rod (304).

4. The hydraulic cylinder with adjustable stroke stop mechanism according to claim 1, characterized in that, The bottom end of the limiting plate limiting bolt (308) is threadedly connected with the top connecting table (302), and the limiting plate limiting bolt (308) is provided with a nut on the upper and lower sides of the baffle limiting plate (307).

5. The hydraulic cylinder with adjustable stroke stop mechanism according to claim 1, wherein, The buffer ring (311), the spring limiting connecting frame (309) and the piston rod (304) are sleeved, the buffer springs (310) are arranged at equal distances in four groups, the buffer ring (311) and the spring limiting connecting frame (309) constitute a buffer structure through the buffer springs (310).

6. The hydraulic cylinder with adjustable stroke stop mechanism according to claim 1, characterized in that, The limiting screw rod (313) is threadedly connected with the threaded groove (312), the limiting screw rod (313) is located in the middle of the two groups of buffer springs (310), the limiting screw rod (313) penetrates the spring limiting connecting frame (309), the end of the limiting screw rod (313) limits the buffer ring (311), and the limiting screw rod (313) is arranged at equal distances in four groups.

7. The hydraulic cylinder with adjustable stroke stop mechanism according to claim 1, characterized in that, The upper side of the threaded groove (312) is provided with an adjusting nut (314), and the adjusting nut (314) is threadedly connected with the limiting screw rod (313).

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