CN219754955U

CN219754955U - Threaded cylinder capable of restraining reset spring

Info

Publication number: CN219754955U
Application number: CN202321200790.9U
Authority: CN
Inventors: 施程勇; 陈利国; 张礼华
Original assignee: Zhejiang Dongte Pneumatic Co ltd
Current assignee: Zhejiang Dongte Pneumatic Co ltd
Priority date: 2023-05-16
Filing date: 2023-05-16
Publication date: 2023-09-26
Anticipated expiration: 2033-05-16

Abstract

The utility model relates to the technical field of cylinders, in particular to a threaded cylinder capable of restraining a return spring, which comprises a cylinder barrel, wherein the left end of the cylinder barrel is provided with a front end cover, the left side of the front end cover is fixedly provided with a guide sleeve, the right side of the cylinder barrel is provided with a rear end cover, the top surfaces of the rear end cover and the front end cover are respectively provided with an air port, a restraining mechanism is arranged among the rear end cover, the front end cover and the cylinder barrel, the inside of the cylinder barrel is hollow, a piston rod is arranged inside the cylinder barrel, the outer side of the piston rod is respectively provided with a first thread groove and the return spring, the purpose of restraining the return spring is achieved by the aid of the threaded cylinder capable of restraining the return spring, the piston rod is effectively ensured to shrink under the pushing of the return spring, the air tightness inside the cylinder barrel is improved, the normal operation of the cylinder is facilitated, and the practical effect of the cylinder is improved.

Description

Threaded cylinder capable of restraining reset spring

Technical Field

The utility model relates to the technical field of cylinders, in particular to a threaded cylinder capable of restraining a return spring.

Background

The cylinder is a power driving device commonly used in the pneumatic industry, and is used for converting the pressure energy of compressed air into mechanical energy so as to drive a mechanism to do linear reciprocating motion, swinging motion or rotating motion. The cylinder of the driving mechanism for reciprocating rectilinear motion can be divided into a single-acting cylinder and a double-acting cylinder, and for specific occasions requiring pipeline simplification as much as possible and needing no bidirectional operation of the cylinder, the single-acting cylinder is needed. The single-acting cylinder has one piston connecting rod set on one end to supply air to the piston to produce air pressure, and the air pressure drives the piston to produce thrust to stretch out and return by means of spring thrust or dead weight

The utility model of patent application number CN202022547420.5 discloses a threaded cylinder capable of restraining a return spring, which comprises a cylinder body, a front cover, a piston rod, a piston and the return spring, wherein the front cover is connected to the left end inside the cylinder body, one end of the piston rod stretches into the cylinder body, the other end of the piston rod is exposed out of the cylinder body, the piston rod stretching into the cylinder body penetrates through the front cover and is connected with the piston, one end of the return spring is connected to the piston, the other end of the return spring is connected to the front cover, the front cover and the piston are provided with restraining structures, and the return spring is limited in the front cover or the piston through the restraining structures and can be released from the restraining structures during maintenance. The utility model has the advantages that the reset spring can be limited and restrained, so that the reset spring can not generate the condition of bidirectional spring when the piston rod is finished executing and retreating into the cylinder body, and the limiting and restraining is not limited and restrained by adopting a welding mode, and can be detached from the piston and the front cover during maintenance, thereby reducing the maintenance cost.

Although the above patent solves the problems in the background art, the following disadvantages still exist: the cylinder of the device realizes the constraint function of the reset spring by virtue of the arc-shaped channel, the constraint mode has poor effect, the piston rod is easy to retract, meanwhile, the front cover and the cylinder body do not have good tightness, the cylinder is not beneficial to better running, and the practical effect of the cylinder is reduced.

In summary, the present utility model solves the above-mentioned problems in the prior art by designing a threaded cylinder that can constrain a return spring.

Disclosure of Invention

The utility model aims to provide a threaded cylinder capable of restraining a return spring so as to solve the problems in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a can retrain reset spring's screw thread cylinder, includes the cylinder, the left end of cylinder is provided with the front end housing, the left side fixed mounting of front end housing has the uide bushing, the right side of cylinder is provided with the rear end housing, the gas port has all been seted up to the top surface of rear end housing and front end housing, be provided with restraint mechanism between rear end housing, front end housing and the cylinder, the inside of cylinder is hollow form, the inside of cylinder is provided with the piston rod, the outside of piston rod is provided with thread groove and reset spring respectively, the outside of thread groove is provided with the nut No. one, the right-hand member fixed mounting of piston rod has the buffering plunger, the buffering plunger outside is provided with thread groove No. two, sealing washer and nut No. two respectively;

the restraining mechanism comprises a sealing groove, a buffer groove and an external thread groove, wherein an internal thread groove is formed in the inner wall of the outer side of the sealing groove, and an annular restraining stop block is fixedly arranged on the side of the inner wall of the buffer groove.

As a preferable scheme of the utility model, the inner wall of the air port is arranged in a thread shape, and the inner wall of the air port is communicated with the buffer groove.

As a preferable scheme of the utility model, the left end of the piston rod movably penetrates through the right side surface of the guide sleeve and extends to the left side of the guide sleeve, and a dustproof check ring is arranged between the guide sleeve and the piston rod.

As a preferable scheme of the utility model, the first thread groove is in threaded connection with the inner wall of the first nut, and the second thread groove is in threaded connection with the inner wall of the second nut.

As a preferable scheme of the utility model, the inner wall of the sealing ring is in sliding fit with the outer side surface of the buffer plunger, the outer side surface of the sealing ring is in contact with the inner wall of the cylinder barrel, and the size of the sealing ring is larger than that of the reset spring.

In a preferred embodiment of the present utility model, the seal grooves are respectively formed on opposite side surfaces of the front end cover and the rear end cover, and inner sides of inner walls of the seal grooves are in sealing contact with inner walls of the cylinder.

As a preferable scheme of the utility model, the external thread grooves are respectively positioned at the left end and the right end of the outer side of the cylinder barrel, and are correspondingly arranged and in threaded connection with the internal thread grooves.

As a preferred embodiment of the present utility model, the right end of the annular restraining block is located at the inner left end of the cylinder tube, and it completely covers the left side surface of the return spring.

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

according to the threaded cylinder capable of restraining the return spring, the sealing installation between the front end cover, the rear end cover and the cylinder barrel and the contact between the annular restraining stop block and the return spring are realized by utilizing the structural design in the restraining mechanism, so that the purpose of restraining the return spring is achieved, the piston rod is effectively ensured to shrink under the pushing of the return spring, the air tightness inside the cylinder barrel is improved, the normal operation of the cylinder barrel is facilitated, and the practical effect of the cylinder barrel is improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a partially exploded view of the cylinder of the present utility model;

FIG. 3 is a schematic exploded view of the restraint mechanism of the present utility model.

In the figure: 1. a cylinder; 101. a front end cover; 102. a guide sleeve; 103. a rear end cover; 104. a piston rod; 1041. a first thread groove; 1042. a return spring; 1043. a first nut; 105. buffering the plunger; 1051. a second thread groove; 1052. a seal ring; 1053. a second nut; 2. an air port; 3. a restraint mechanism; 301. sealing grooves; 302. a buffer tank; 303. an external thread groove; 304. an internal thread groove; 305. the stopper is restrained.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without making any inventive effort based on the embodiments of the present utility model are within the scope of protection of the present utility model.

In order that the utility model may be readily understood, several embodiments of the utility model will be described more fully hereinafter with reference to the accompanying drawings, in which, however, the utility model may be embodied in many different forms and is not limited to the embodiments described herein, but instead is provided for the purpose of providing a more thorough and complete disclosure of the utility model.

It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may also be present, and when an element is referred to as being "connected" to the other element, it may be directly connected to the other element or intervening elements may also be present, the terms "vertical", "horizontal", "left", "right" and the like are used herein for the purpose of illustration only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs, and the terms used herein in this description of the utility model are for the purpose of describing particular embodiments only and are not intended to be limiting of the utility model, with the term "and/or" as used herein including any and all combinations of one or more of the associated listed items.

Referring to fig. 1-3, the present utility model provides a technical solution:

the utility model provides a can retrain reset spring's screw thread cylinder, including cylinder 1, cylinder 1's left end is provided with front end housing 101, front end housing 101's left side fixed mounting has uide bushing 102, cylinder 1's right side is provided with rear end housing 103, be provided with restraint mechanism 3 between rear end housing 103, front end housing 101 and the cylinder 1, cylinder 1's inside is hollow form, cylinder 1's inside is provided with piston rod 104, piston rod 104's outside is provided with screw thread groove 1041 and reset spring 1042 respectively, screw thread groove 1041's outside sets up nut 1043 No. one, piston rod 104's right-hand member fixed has buffering plunger 105, buffering plunger 105 outside is provided with screw thread groove 1051 No. two, sealing washer 1052 and No. two nuts 1053 respectively;

specifically, the inner wall of the air port 2 is arranged in a thread shape, and is communicated with the buffer groove 302;

in this embodiment, the arrangement of the air port 2 facilitates the change of the air pressure inside the cylinder 1, and the operation of the subsequent cylinder.

Specifically, the left end of the piston rod 104 movably penetrates through the right side surface of the guide sleeve 102 and extends to the left side of the guide sleeve 102, and a dustproof check ring is arranged between the guide sleeve 102 and the piston rod 104;

in this embodiment, the piston rod 104 can slide with the guide sleeve 102 in a sealing manner through the dust-proof retainer ring, so that the contracted state of the piston rod 104 is ensured.

Specifically, the inner wall of the sealing ring 1052 is slidably attached to the outer side surface of the buffer plunger 105, and the outer side surface is in contact with the inner wall of the cylinder barrel 1, the size of the sealing ring 1052 is larger than that of the return spring 1042, the first thread groove 1041 is in threaded connection with the inner wall of the first nut 1043, and the second thread groove 1051 is in threaded connection with the inner wall of the second nut 1053;

in this embodiment, the setting of No. two nuts 1053 can make firm contact between sealing washer 1052 and buffer plunger 105, has guaranteed the stable sealing contact of sealing washer 1052 and cylinder 1 inner wall.

In this embodiment, referring to fig. 1, 2 and 3, the top surfaces of the rear end cover 103 and the front end cover 101 are both provided with an air port 2, the constraint mechanism 3 comprises a sealing groove 301, a buffer groove 302 and an external thread groove 303, an internal thread groove 304 is provided on the outer inner wall of the sealing groove 301, and an annular constraint stop block 305 is fixedly installed on the inner wall side of the buffer groove 302;

specifically, the seal grooves 301 are respectively formed on opposite side surfaces of the front end cover 101 and the rear end cover 103, the inner sides of the inner walls of the seal grooves are in sealing contact with the inner wall of the cylinder 1, the external thread grooves 303 are respectively positioned at the left end and the right end of the outer side of the cylinder 1, the external thread grooves are correspondingly arranged and in threaded connection with the internal thread grooves 304, the right end of the annular constraint stop block 305 is positioned at the left end of the inner side of the cylinder 1, and the right end of the annular constraint stop block is completely covered on the left side surface of the reset spring 1042;

in this embodiment, screw thread cooperation between front end housing 101, rear end housing 103 and cylinder 1 makes it and cylinder 1 get sealed laminating, makes the inside airtight space that has formed of square tube cylinder 1, and the setting of annular restraint dog 305 can effectually retrain return spring 1042, has effectually guaranteed return spring 1042 expansion state, has satisfied user's demand.

The working flow of the utility model is as follows: when the threaded cylinder capable of restraining the return spring is used, the front end cover 101 and the rear end cover 103 are firstly installed, the inner side of the inner wall of the sealing groove 301 is in sealing contact with the inner wall of the cylinder barrel 1 through threaded fit between the inner threaded groove 304 and the outer threaded groove 303, so that the air tightness inside the cylinder barrel 1 is improved, then the cylinder can be operated, under the action of air pressure in the operation process of the cylinder, the sealing ring 1052 drives the buffer plunger 105 to move left, the buffer plunger 105 drives the piston rod 104 to move left, the left side of the sealing ring 1052 is in contact with the return spring 1042 and drives the return spring 1042 to move left, the left side of the return spring 1042 is in contact with the right side of the restraining stop block 305 and gradually in a shrinkage shape, and when the cylinder is finished to work, the elastic reaction force generated by the return spring 1042 can drive the sealing ring 1052 to drive the buffer plunger 105 to move right, and the piston rod 104 to move right, so that the cylinder is in a shrinkage state, the operation of the cylinder is completed, and the practicability of the cylinder is improved.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the utility model as defined by the appended claims and their equivalents.

Claims

1. The utility model provides a can retrain reset spring's screw thread cylinder, includes cylinder (1), its characterized in that: the novel hydraulic cylinder is characterized in that a front end cover (101) is arranged at the left end of the cylinder barrel (1), a guide sleeve (102) is fixedly arranged at the left side of the front end cover (101), a rear end cover (103) is arranged at the right side of the cylinder barrel (1), air ports (2) are formed in the top surfaces of the rear end cover (103) and the front end cover (101), a constraint mechanism (3) is arranged among the rear end cover (103), the front end cover (101) and the cylinder barrel (1), the inside of the cylinder barrel (1) is hollow, a piston rod (104) is arranged in the cylinder barrel (1), a first threaded groove (1041) and a reset spring (1042) are respectively arranged at the outer side of the piston rod (104), a first nut (1043) is arranged at the outer side of the first threaded groove (1041), a buffer plunger (105) is fixedly arranged at the right end of the piston rod (104), and a second threaded groove (1), a sealing ring (1052) and a second nut (1053) are respectively arranged at the outer side of the buffer plunger (105).

The restraining mechanism (3) comprises a sealing groove (301), a buffer groove (302) and an external thread groove (303), wherein an internal thread groove (304) is formed in the outer side inner wall of the sealing groove (301), and an annular restraining stop block (305) is fixedly mounted on the inner wall side of the buffer groove (302).

2. A threaded cylinder for restraining a return spring according to claim 1, wherein: the inner wall of the air port (2) is arranged in a threaded mode, and the inner wall of the air port is communicated with the buffer groove (302).

3. A threaded cylinder for restraining a return spring according to claim 1, wherein: the left end of the piston rod (104) movably penetrates through the right side surface of the guide sleeve (102) and extends to the left side of the guide sleeve (102), and a dustproof check ring is arranged between the guide sleeve (102) and the piston rod (104).

4. A threaded cylinder for restraining a return spring according to claim 1, wherein: the first thread groove (1041) is in threaded connection with the inner wall of the first nut (1043), and the second thread groove (1051) is in threaded connection with the inner wall of the second nut (1053).

5. A threaded cylinder for restraining a return spring according to claim 1, wherein: the inner wall of the sealing ring (1052) is in sliding fit with the outer side surface of the buffer plunger (105), the outer side surface of the sealing ring is in contact with the inner wall of the cylinder barrel (1), and the size of the sealing ring (1052) is larger than that of the reset spring (1042).

6. A threaded cylinder for restraining a return spring according to claim 1, wherein: the sealing grooves (301) are respectively arranged on the opposite side surfaces of the front end cover (101) and the rear end cover (103), and the inner sides of the inner walls of the sealing grooves are in sealing contact with the inner wall of the cylinder barrel (1).

7. A threaded cylinder for restraining a return spring according to claim 1, wherein: the external thread grooves (303) are respectively positioned at the left end and the right end of the outer side of the cylinder barrel (1), and are correspondingly arranged with the internal thread grooves (304) in a threaded connection manner.

8. A threaded cylinder for restraining a return spring according to claim 1, wherein: the right end of the annular restraining block (305) is positioned at the left end of the inner part of the cylinder barrel (1), and the right end of the annular restraining block completely covers the left side surface of the return spring (1042).