CN210003604U

CN210003604U - plunger cylinder connecting structure with self-aligning function

Info

Publication number: CN210003604U
Application number: CN201920730482.4U
Authority: CN
Inventors: 邓宗泽; 王玉辉; 杨君良; 吕飞
Original assignee: SICHUAN CRUN CO Ltd
Current assignee: SICHUAN CRUN CO Ltd
Priority date: 2019-05-21
Filing date: 2019-05-21
Publication date: 2020-01-31
Anticipated expiration: 2029-05-21

Abstract

The utility model discloses an plunger jar connection structure with from aligning function, including the cylinder body, with cylinder body sliding connection's plunger, the end of cylinder body be provided with the annular groove, the end that the plunger is close to the cylinder body be provided with the mounting hole and install in the annular groove, the output of cylinder body be connected with mounting hole clearance fit's joint bearing, be provided with the built-up seal circle between the lateral surface of plunger and the medial surface of annular groove the beneficial effects of the utility model are that this scheme can reduce the radial unbalance loading that the plunger receives, makes the moving direction of plunger and the axial of plunger keep to reduce the wearing and tearing of plunger at the removal in-process, and reduce the plunger and to the extrusion of seal structure at the removal in-process, be favorable to guaranteeing plunger and seal structure's life, reduce cost of maintenance.

Description

plunger cylinder connecting structure with self-aligning function

Technical Field

The utility model relates to a pneumatic cylinder technical field specifically is plunger cylinder connection structure with from aligning function.

Background

In the mechanical field, due to the influence of factors such as the assembly clearance of a main machine, the instability of processed materials, the abrasion of parts caused in the operation process of the main machine and the like, the hydraulic cylinder matched with the main machine equipment inevitably has radial unbalance loading in the reciprocating linear motion direction of the hydraulic cylinder. However, in the structural form of the existing hydraulic cylinder, the plunger cannot follow the deflection of host equipment, so that the automatic centering and the radial deflection load are large, and the surface of the plunger extrudes a sealing piece, so that the service life of the hydraulic cylinder is seriously shortened.

SUMMERY OF THE UTILITY MODEL

For overcoming prior art's not enough, the utility model provides an plunger jar connection structure who has from aligning function makes the plunger of pneumatic cylinder follow host computer equipment beat and automatic aligning to the axis that makes the plunger sends rather than the basic of reciprocal linear motion direction, overcomes the radial unbalance loading of pneumatic cylinder, guarantees pneumatic cylinder reciprocating motion's stability.

plunger cylinder connection structure with from aligning function, including the cylinder body, with cylinder body sliding connection's plunger, the end of cylinder body be provided with the annular groove, the end that the plunger is close to the cylinder body be provided with the mounting hole and install in the annular groove, the output of cylinder body be connected with mounting hole clearance fit's joint bearing, be provided with the combination sealing washer between the lateral surface of plunger and the medial surface of annular groove.

step, for better realization the utility model discloses, the lateral surface of plunger and combination sealing washer between be provided with the guide ring.

step by step, for better realization the utility model discloses, joint bearing's inner circle pass through bearing screw with the output of cylinder body and be connected.

furthermore, in order to realize the utility model, the output end of the cylinder body and the inner ring of the knuckle bearing are installed by conical surface fit.

step by step, for better realization the utility model discloses, the plunger end of keeping away from the cylinder body be connected with the support, the support on be provided with the sphere, the plunger on be provided with sphere complex sphere recess, the support on be provided with the connecting sleeve who has support screw, support screw pass connecting sleeve, support and with plunger threaded connection, connecting sleeve and support between be provided with the clearance.

The beneficial effect that this scheme obtained is:

this scheme can reduce the radial unbalance loading that the plunger received, makes the moving direction of plunger and the axial of plunger keep and send to reduce the plunger and remove the wearing and tearing of in-process, and reduce the plunger and remove the extrusion of in-process to seal structure, be favorable to guaranteeing plunger and seal structure's life, reduce cost of maintenance.

Drawings

Fig. 1 is a schematic structural diagram of the present solution.

Wherein: 1-cylinder body, 2-joint bearing, 3-guide ring, 4-combined sealing ring, 5-dustproof ring, 6-bearing screw, 7-plunger, 8-connecting sleeve, 9-support, 10-connecting sleeve and 11-support screw.

Detailed Description

The present invention will be described in further detail in with reference to the following examples and drawings, but the present invention is not limited thereto.

Example 1:

as shown in fig. 1, in this embodiment, plunger cylinder connection structures with self-aligning function include a cylinder body 1 and a plunger 7 slidably connected to the cylinder body 1, an annular groove is provided at the end of the cylinder body 1, a mounting hole is provided at the end of the plunger 7 close to the cylinder body 1 and is installed in the annular groove, an output end of the cylinder body 1 is connected to a joint bearing 2 in clearance fit with the mounting hole, a combined seal ring 4 is provided between the outer side surface of the plunger 7 and the inner side surface of the annular groove, and a connecting sleeve 8 is sleeved on the outer side of the cylinder body 1.

In this embodiment, plunger 7 be connected with the bearing frame transmission of roll squeezer movable roll, carry out the work of broken material between roll squeezer's movable roll and the fixed roll, when the particle diameter of material is greater than the clearance of movable roll and fixed roll, the material struts the movable roll, and the movable roll drives plunger 7 at the inside reciprocal linear motion of cylinder body 1.

Because the movable roller is long cylindrical, at least two plungers 7 are arranged to be in transmission connection with bearing seats at two ends of the movable roller respectively in order to make the force supported by the movable roller evenly distributed, because the material is uneven, the displacement amount of two ends of the movable roller is different, the plungers 7 have the tendency of deflecting in the moving process, so that the moving direction of the plungers 7 is deviated from the axis of the plungers 7 without overlapping, thereby increasing the abrasion of the plungers 7 and reducing the working efficiency of the plungers 7.

Through making the output of cylinder body 1 be connected through joint bearing 2 with plunger 7, just can utilize the relative rotation of joint bearing 2 inner and outer lane to offset radial unbalance loading to plunger 7's influence, avoid plunger 7 to produce the motion trend that deflects to reduce plunger 7's wearing and tearing, and avoid plunger 7 to cause the extrusion to combination sealing washer 4, be favorable to guaranteeing plunger 7 and combination sealing washer 4's life, reduce cost of maintenance.

In the embodiment, the joint bearing 2 and the plunger 7 are subjected to carburizing treatment, so that the cleanliness of oil can be ensured while the surface hardness and the wear resistance of a matrix are provided and the service life of the bearing is ensured.

In this embodiment, the spherical center of the inner ring of the joint bearing 2 and the combined seal ring 4 are located on the same plane, and the joint bearing 2 does not extrude the combined seal ring 4 in the process of swinging along with the plunger 7, so that the service life of the hydraulic cylinder is ensured.

In this embodiment, the guide ring 3 is arranged between the outer side surface of the plunger 7 and the combined seal ring 4, and the guide ring 3 mainly plays a role in supporting and guiding the plunger 7, thereby being beneficial to reducing the abrasion of the plunger 7 and prolonging the service life of the plunger 7. A dust ring 5 is arranged between the guide ring 3 and the cylinder body 1, so that the sealing effect is enhanced.

Example 2:

as shown in fig. 1, in the present embodiment, on the basis of the above embodiments, the inner ring of the joint bearing 2 is connected with the output end of the cylinder block 1 through the bearing screw 6. A plurality of countersunk holes which are uniformly distributed and used for installing the bearing screws 6 are formed in the inner ring of the joint bearing 2, so that the interference caused by the exposure of the bearing screws 6 is avoided. The connection strength of the inner ring of the joint bearing 2 and the output end of the cylinder body 1 can be improved by utilizing the connection of the bearing screw 6

The output end of the cylinder body 1 is matched with the inner ring of the joint bearing 2 through a conical surface. The conical surface is used for matching and installing, so that the automatic centering effect can be achieved, the output end of the cylinder body 1 can be clamped tightly by the conical surface matching, looseness is prevented, and the transmission efficiency and the transmission precision can be improved.

In this embodiment, the outer ring of the joint bearing 2 is in clearance fit with the mounting hole of the plunger 7, so that the plunger is smoother in reciprocating linear motion.

Example 3:

as shown in fig. 1, on the basis of the above embodiment, in this embodiment, a bracket 9 is connected to an end of the plunger 7 away from the cylinder 1, a spherical surface is disposed on the bracket 9, a spherical groove matched with the spherical surface is disposed on the plunger 7, a connecting sleeve 10 with a bracket screw 11 is disposed on the bracket 9, the bracket screw 11 passes through the connecting sleeve 10 and the bracket 9 and is in threaded connection with the plunger 7, and a gap is disposed between the connecting sleeve 10 and the bracket 9.

The bracket 9 is connected with the plunger 7 by the bracket screw 11, so that the bracket 9 and the plunger 7 can rotate relatively within a certain range of . the bracket 9 is mainly used for being connected with a bearing seat of the movable roller, and when the bracket 9 swings along with the bearing seat of the movable roller, the radial unbalance load applied to the plunger 7 by the bearing seat of the movable roller is reduced by the relative rotation between the inner spherical surface of the plunger 7 and the outer spherical surface of the connecting bracket 9.

In this embodiment, other undescribed contents are the same as those in the above embodiment, and thus are not described again.

The scheme is also suitable for other occasions similar to the occasions needing to adjust the gap between the movable roller and the fixed roller.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and the technical spirit of the present invention is within the spirit and principle of the present invention, and any simple modification, equivalent replacement, and improvement made to the above embodiments are all within the protection scope of the technical solution of the present invention.

Claims

plunger cylinder connecting structures with self-aligning function comprise a cylinder body (1) and a plunger (7) connected with the cylinder body (1) in a sliding mode, and are characterized in that an annular groove is formed in a end of the cylinder body (1), a mounting hole is formed in the end, close to a end of the cylinder body (1), of the plunger (7) and is installed in the annular groove, an output end of the cylinder body (1) is connected with a joint bearing (2) in clearance fit with the mounting hole, and a combined sealing ring (4) is arranged between the outer side face of the plunger (7) and the inner side face of the annular groove.
2. plunger cylinder connecting structure with self-aligning function, according to claim 1, characterized in that a guide ring (3) is provided between the outer side of the plunger (7) and the combined seal ring (4).
3. plunger cylinder connection structure with self-aligning function, according to claim 1, characterized in that the inner ring of the knuckle bearing (2) is connected with the output end of the cylinder block (1) through a bearing screw (6).
4. plunger cylinder connecting structure with self-aligning function, according to claim 1, characterized in that the output end of the cylinder block (1) and the inner ring of the knuckle bearing (2) are installed by taper fit.
5. plunger cylinder connection structure with self-aligning function, according to claim 1, characterized in that a bracket (9) is connected to end of the plunger (7) away from the cylinder body (1), the bracket (9) is provided with a spherical surface, the plunger (7) is provided with a spherical surface groove matching with the spherical surface, the bracket (9) is provided with a connection sleeve (10) with a bracket screw (11), the bracket screw (11) passes through the connection sleeve (10) and the bracket (9) and is in threaded connection with the plunger (7), and a gap is provided between the connection sleeve (10) and the bracket (9).