CN216199443U

CN216199443U - Piston rod limiting device with double limiting functions for hydraulic cylinder

Info

Publication number: CN216199443U
Application number: CN202122494881.5U
Authority: CN
Inventors: 董新锐
Original assignee: Shanghai Yaosen Hengtai Engineering Technology Co ltd
Current assignee: Shanghai Yaosen Hengtai Engineering Technology Co ltd
Priority date: 2021-10-15
Filing date: 2021-10-15
Publication date: 2022-04-05
Anticipated expiration: 2031-10-15

Abstract

The utility model relates to the technical field of hydraulic cylinder line related equipment, in particular to a piston rod limiting device with a double limiting function for a hydraulic cylinder. According to the utility model, the piston rod of the oil cylinder body rises to drive the fixing plate to rise, the rotary gasket rotates towards the oil cylinder body under the action of the control shaft, the triangular clamping block is in lap joint with the rotary gasket to limit the retraction of the fixing plate, the fixing plate can only move upwards when the rotary gasket deflects, so that the piston rod of the oil cylinder body is limited, the piston rod of the oil cylinder body is less abraded, the limiting support is stable, the disassembly and the maintenance are convenient, the top cover plate falls on the top of the steel structure cylinder through the arrangement of the top cover plate, and the object supporting force falls on the steel structure cylinder when the limiting mechanism cannot limit the retraction of the piston rod of the oil cylinder body, so that the damage of the inner main cylinder is avoided, and the double limiting is realized.

Description

Piston rod limiting device with double limiting functions for hydraulic cylinder

Technical Field

The utility model relates to the technical field of hydraulic cylinder line related equipment, in particular to a piston rod limiting device with double limiting functions for a hydraulic cylinder.

Background

The hydraulic cylinder is a hydraulic actuating element which converts hydraulic energy into mechanical energy and does linear reciprocating motion, has simple structure and reliable work, can omit a speed reducer when realizing reciprocating motion, has no transmission clearance and moves stably, thereby being widely applied to hydraulic systems of various machines, and the output force of the hydraulic cylinder is in direct proportion to the effective area of a piston and the pressure difference between the two sides of the piston; the hydraulic cylinder basically comprises a cylinder barrel, a cylinder cover, a piston rod, a sealing device, a buffering device and an exhaust device, leakage occurs in the cylinder due to damage or failure of a sealing element inside the cylinder, or the cylinder cannot provide required jacking force due to incapability of maintaining pressure or leakage of matched hydraulic power equipment, and the piston rod limiting device with a limiting function is required to be used to prevent the piston rod from retracting and retreating.

The existing piston rod limiting device adopts a mode that a plurality of gaskets clamp a piston rod, and the piston rod is seriously abraded with the gaskets in the up-and-down moving process, so that the piston rod is not beneficial to long-term use; the existing piston rod limiting device limits the retraction of a piston rod by utilizing a gap between the piston rod and a main cylinder, and the piston rod still retracts continuously when an object is not supported enough, so that the main cylinder and other devices are damaged, and the limiting force is limited.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a piston rod limiting device with double limiting functions for a hydraulic cylinder, so as to solve the problems in the background technology. In order to achieve the purpose, the utility model provides the following technical scheme: the piston rod limiting device with the dual limiting function for the hydraulic cylinder comprises a base, wherein a steel structure cylinder is fixedly mounted at the top of the base, an oil cylinder body is fixedly mounted inside the base, the top surface of the base is located on the steel structure cylinder, a top cover plate is fixedly mounted on the top surface of a piston rod in the oil cylinder body, grooves are formed in the two sides of the top cover plate, a limiting mechanism is mounted in the steel structure cylinder, a second through hole is formed in the top of the steel structure cylinder in a penetrating mode, and the top cover plate is located at the top of the second through hole.

Preferably, the limiting mechanism includes semi-ring grip block, control shaft, rotating shim, backup pad and fixed plate, the top surface fixed mounting of base has two backup pads, two all run through in the backup pad and seted up first perforation, two the backup pad top is all rotated and is run through and install the control shaft, two the position that the control shaft is located first perforation inside all fixedly cup joints rotating shim, the quantity of semi-ring grip block and fixed plate is two, two fixed plate fixed mounting has two fixed plates, two between the semi-ring grip block fixed joint is in the top surface of piston rod in the hydro-cylinder body with the semi-ring grip block, two a side surface of fixed plate is impartial apart from fixed mounting has a plurality of triangle fixture block.

Preferably, the top ends of the two control shafts rotatably penetrate through the top plate of the steel structure cylinder and are fixedly provided with control handles.

Preferably, the bottom ends of the two fixing plates are fixedly connected with a reinforcing ring together, and the reinforcing ring is movably sleeved outside the oil cylinder body.

Preferably, a plurality of reinforcing blocks are fixedly mounted between the supporting plate and the oil cylinder body, and reinforcing teeth are fixedly mounted inside the semi-ring clamping plates.

Preferably, the steel structure cylinder is provided with a communicating hole in a penetrating way.

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

according to the utility model, the piston rod of the oil cylinder body is controlled to rise, the piston rod of the oil cylinder body rises to drive the fixed plate to rise, the triangular fixture block is arranged on the fixed plate, the rotary gasket rotates towards the oil cylinder body under the action of the control shaft, the triangular fixture block is in lap joint with the rotary gasket to limit the fixed plate to retract, and the fixed plate can only move upwards when the rotary gasket deflects, so that the piston rod of the oil cylinder body is limited, the piston rod of the oil cylinder body is less abraded, the limiting support is stable, and the disassembly and the maintenance are convenient.

According to the utility model, by arranging the top cover plate, when the limiting mechanism can not limit the retraction of the piston rod of the oil cylinder body, the top cover plate falls on the top of the steel structure cylinder, and the object supporting force falls on the steel structure cylinder, so that the damage of the inner main cylinder barrel is avoided, and double limiting is realized.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a front sectional structural view of the present invention;

FIG. 3 is a schematic top view of two half-ring clamping plates according to the present invention;

FIG. 4 is a perspective view of the support plate of the present invention;

fig. 5 is a perspective view of the rotary washer of the present invention.

In the figure: 1. a base; 2. a steel structure cylinder; 3. an oil cylinder body; 4. a communicating hole; 5. a limiting mechanism; 501. a half-ring clamping plate; 502. a control shaft; 503. rotating the spacer; 504. a support plate; 505. a fixing plate; 506. a triangular clamping block; 507. a control handle; 508. a reinforcing block; 509. a reinforcing tooth; 510. a first perforation; 511. a reinforcing ring; 6. a groove; 7. a top cover plate; 8. and a second perforation.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Referring to fig. 1 to 5, the present invention provides a technical solution: the piston rod limiting device with the double limiting functions for the hydraulic cylinder comprises a base 1, a steel structure cylinder 2 is fixedly mounted at the top of the base 1, a cylinder body 3 is fixedly mounted inside the base 1, the top surface of the steel structure cylinder 2 is located, a top cover plate 7 is fixedly mounted on the surface of the top end of a piston rod in the cylinder body 3, grooves 6 are formed in two sides of the top cover plate 7, a limiting mechanism 5 is mounted in the steel structure cylinder 2, the top of the steel structure cylinder 2 is penetrated through and provided with a second perforation 8, and the top cover plate 7 is located at the top of the second perforation 8.

In this embodiment, as shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, the limiting mechanism 5 includes two half ring clamping plates 501, a control shaft 502, a rotating gasket 503, two supporting plates 504 and a fixing plate 505, the top surface of the base 1 is fixedly provided with the two supporting plates 504, the two supporting plates 504 are all provided with a first through hole 510 in a penetrating manner, the tops of the two supporting plates 504 are all rotated and are provided with the control shaft 502 in a penetrating manner, the positions of the two control shafts 502 inside the first through hole 510 are all fixedly sleeved with the rotating gasket 503, the number of the half ring clamping plates 501 and the fixing plates 505 is two, the two fixing plates 505 are fixedly installed between the two half ring clamping plates 501, the two fixing plates 505 and the half ring clamping plates 501 are fixedly sleeved on the outer surface of the top end of the piston rod in the cylinder body 3, and a plurality of triangular clamping blocks 506 are fixedly installed on the side surfaces of the two fixing plates 505 at equal distances.

In this embodiment, as shown in fig. 1, fig. 2 and fig. 3, the top ends of the two control shafts 502 rotate to penetrate through the top plate of the steel structure cylinder 2 and are fixedly provided with the control handles 507, and the control shafts 502 are conveniently controlled to rotate by arranging the control handles 507 to conveniently connect the external rotating assembly.

In this embodiment, as shown in fig. 1, fig. 2, fig. 3 and fig. 4, the bottom ends of the two fixing plates 505 are fixedly connected with a reinforcing ring 511 together, the reinforcing ring 511 is movably sleeved outside the oil cylinder body 3, and the supporting strength and stability are improved by the reinforcing ring 511.

In this embodiment, as shown in fig. 1, fig. 2, fig. 3, fig. 4, and fig. 5, a plurality of reinforcing blocks 508 are fixedly installed between the two supporting plates 504 and the cylinder body 3, reinforcing teeth 509 are fixedly installed inside the two half-ring clamping plates 501, and the clamping force is improved by the reinforcing teeth 509.

In this embodiment, as shown in fig. 1, the steel cylinder 2 is provided with a communication hole 4 through which a hydraulic source and a control switch are externally connected.

The use method and the advantages of the utility model are as follows: when the piston rod limiting device with the double limiting function is used, the working process is as follows:

as shown in fig. 1, 2, 3, 4 and 5, in the present invention, the cylinder body 3 is externally connected with a hydraulic source and a control switch through the communication hole 4, and both the two control handles 507 are externally connected with a rotating assembly for controlling the rotation of the control shaft 502, for the prior art, when in use, an object to be pushed is installed on the top of the top cover plate 7, the piston rod of the cylinder body 3 is controlled to rise, the piston rod of the cylinder body 3 rises to drive the fixing plate 505 to rise, the fixing plate 505 is provided with a triangular fixture block 506, the rotating gasket 503 rotates towards the cylinder body 3 under the action of the control shaft 502, the triangular fixture block 506 is lapped with the rotating gasket 503 to limit the retraction of the fixing plate 505, the fixing plate 505 can only move upwards when the rotating gasket 503 deflects, thereby limiting the piston rod of the cylinder body 3 is realized, the piston rod of the cylinder body 3 is less worn, the limiting support is stable, and the disassembly and maintenance are convenient, when the piston rod of the oil cylinder body 3 cannot be limited to retract by the limiting mechanism 5, the top cover plate 7 falls on the top of the steel structure cylinder 2, and the object supporting force falls on the steel structure cylinder 2, so that the damage to the inner main cylinder barrel is avoided, and dual limiting is realized.

The present invention relates to circuits, electronic components and control modules all of which are well within the skill of those in the art and, needless to say, the present invention is not directed to software and process improvements.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The hydraulic cylinder is with piston rod limiting device who has dual limit function, including base (1), its characterized in that: the top fixed mounting of base (1) has a steel structure section of thick bamboo (2), the inside fixed mounting that base (1) top surface is located a steel structure section of thick bamboo (2) has hydro-cylinder body (3), piston rod top fixed surface installs lamina tecti (7) in hydro-cylinder body (3), the both sides of lamina tecti (7) are all seted up flutedly (6), install limiting mechanism (5) in a steel structure section of thick bamboo (2), the top of a steel structure section of thick bamboo (2) is run through and has been seted up second perforation (8), lamina tecti (7) are located the top of second perforation (8).

2. The hydraulic cylinder of claim 1 is provided with a piston rod limiting device having a double limiting function, wherein: the limiting mechanism (5) comprises half ring clamping plates (501), control shafts (502), rotating gaskets (503), supporting plates (504) and fixing plates (505), wherein the two supporting plates (504) are fixedly installed on the top surface of the base (1), first through holes (510) are formed in the two supporting plates (504) in a penetrating mode, the control shafts (502) are installed on the tops of the two supporting plates (504) in a rotating and penetrating mode, the rotating gaskets (503) are fixedly sleeved on the positions, located inside the first through holes (510), of the two control shafts (502), the number of the half ring clamping plates (501) and the number of the fixing plates (505) are two, the two fixing plates (505) are fixedly installed between the two half ring clamping plates (501), and the two fixing plates (505) and the half ring clamping plates (501) are fixedly sleeved on the outer surface of the top end of a piston rod in the oil cylinder body (3), a plurality of triangular clamping blocks (506) are fixedly arranged on the surfaces of one sides of the two fixing plates (505) at equal intervals.

3. The hydraulic cylinder of claim 2, wherein the piston rod limiting device has a double limiting function, and the double limiting function is characterized in that: the top ends of the two control shafts (502) rotate to penetrate through the top plate of the steel structure cylinder (2) and are fixedly provided with control handles (507).

4. The hydraulic cylinder of claim 2, wherein the piston rod limiting device has a double limiting function, and the double limiting function is characterized in that: the bottom ends of the two fixing plates (505) are fixedly connected with a reinforcing ring (511) together, and the reinforcing ring (511) is movably sleeved outside the oil cylinder body (3).

5. The hydraulic cylinder of claim 2, wherein the piston rod limiting device has a double limiting function, and the double limiting function is characterized in that: a plurality of reinforcing blocks (508) are fixedly installed between the two supporting plates (504) and the oil cylinder body (3), and reinforcing teeth (509) are fixedly installed inside the two semi-ring clamping plates (501).

6. The hydraulic cylinder of claim 1 is provided with a piston rod limiting device having a double limiting function, wherein: the steel structure cylinder (2) is provided with a communicating hole (4) in a penetrating way.