CN216642623U

CN216642623U - Hydraulic cylinder

Info

Publication number: CN216642623U
Application number: CN202122463072.8U
Authority: CN
Inventors: 唐其; 周立波
Original assignee: Changzhou Chaoshun High Pressure Oil Cylinder Co ltd
Current assignee: Changzhou Chaoshun High Pressure Oil Cylinder Co ltd
Priority date: 2021-10-12
Filing date: 2021-10-12
Publication date: 2022-05-31
Anticipated expiration: 2031-10-12

Abstract

The utility model relates to the technical field of hydraulic pressure, in particular to a hydraulic cylinder which comprises a hollow cylinder body, wherein a cylinder cover and a cylinder bottom are respectively fixed at two ends of the cylinder body, a piston and a piston rod connected with the piston are arranged in the cylinder body, a first flow channel is arranged in the side wall of the cylinder body, a cavity is arranged in the piston, a second flow channel and a third flow channel are arranged in the piston rod, and the second flow channel and the third flow channel are respectively communicated with the cavity; according to the utility model, the hydraulic cylinder is cooled through the arrangement of the first flow passage, the second flow passage and the heat insulation sleeve, so that the service life and the working efficiency of the hydraulic cylinder are improved.

Description

Hydraulic cylinder

Technical Field

The utility model relates to the technical field of hydraulic pressure, in particular to a hydraulic cylinder.

Background

The hydraulic cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). When it is used to implement reciprocating motion, it can omit speed-reducing device, and has no transmission gap, and its motion is stable, so that it can be extensively used in various mechanical hydraulic systems.

The pneumatic cylinder needs work under the environment of difference, and wherein, a lot of pneumatic cylinders need work in high temperature environment, and high temperature can produce adverse effect to the performance of pneumatic cylinder and spare part to influence the life of pneumatic cylinder. At present, most pneumatic cylinders do not have the corresponding cooling device of supporting to cool down the pneumatic cylinder, and in the actual work process, the measure that technical staff took to the influence of high temperature to the pneumatic cylinder is regularly to maintain or change the pneumatic cylinder, wastes time and energy, influences work efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects and shortcomings in the prior art and provide the hydraulic cylinder which can cool the hydraulic cylinder and has long service life and high working efficiency.

The technical scheme for realizing the purpose of the utility model is as follows: the utility model provides a hydraulic cylinder, includes the cavity cylinder body, the both ends of cylinder body are fixed with cylinder cap and cylinder bottom respectively, be equipped with the piston in the cylinder body and with the piston rod that the piston is connected, be equipped with first runner in the lateral wall of cylinder body, be equipped with the cavity in the piston, be equipped with second runner and third runner in the piston rod, second runner and third runner respectively with the cavity intercommunication.

Further, the first flow channel and the second flow channel are both spiral, and the third flow channel is linear.

Further, the bottom lateral wall of cylinder body is equipped with first import, the top lateral wall of cylinder body is equipped with first export, first import and first export respectively with first flow channel intercommunication.

Furthermore, a second inlet and a second outlet are respectively arranged on two corresponding side walls of the top end of the piston rod, the second inlet is communicated with the second flow channel, and the second outlet is communicated with the third flow channel.

Further, the first outlet is communicated with the second inlet through a communicating pipe.

Furthermore, the outer circumferences of the cylinder body, the cylinder cover and the cylinder bottom are all sleeved with heat insulation sleeves.

After the technical scheme is adopted, the utility model has the following positive effects:

(1) according to the utility model, the cooling medium is continuously introduced into the first flow passage and the second flow passage to cool the hydraulic cylinder, so that the influence of high temperature on the hydraulic cylinder is avoided, and a technician is not required to regularly maintain or replace the hydraulic cylinder, thereby prolonging the service life and improving the working efficiency of the hydraulic cylinder;

(2) according to the utility model, through the arrangement of the heat insulation sleeve, the heat exchange between the hydraulic cylinder and the external high-temperature environment is slowed down, so that the cooling effect of the cooling medium on the hydraulic cylinder is improved;

(3) the first flow passage and the second flow passage are communicated through the communicating pipe, so that secondary utilization of the cooling medium is realized, energy is saved, and cost is reduced.

Drawings

In order that the manner in which the present invention is made will be more readily and clearly understood, the utility model will be further described in detail in the following detailed description taken in conjunction with the accompanying drawings, in which:

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

FIG. 2 is a schematic view of a first flow channel according to the present invention;

FIG. 3 is a schematic view of a second flow channel according to the present invention.

In the figure: the cylinder comprises a cylinder body 1, a cylinder cover 2, a cylinder bottom 3, a piston 4, a piston rod 5, a communicating pipe 6, a heat insulation sleeve 7, a sealing ring 8, a dustproof ring 9, a first flow passage 1a, a first inlet 1b, a first outlet 1c, a cavity 4a, a second flow passage 5a, a third flow passage 5b, a second inlet 5c and a second outlet 5 d.

Detailed Description

As shown in fig. 1-3, a hydraulic cylinder includes a hollow cylinder body 1, a cylinder cover 2 and a cylinder bottom 3 are respectively fixed at two ends of the cylinder body 1, a piston 4 and a piston rod 5 connected with the piston 4 are arranged in the cylinder body 1, the piston 4 is in sliding fit with the inner wall of the cylinder body 1, the top end of the piston rod 5 passes through the middle part of the cylinder cover 2 and extends to the outside of the cylinder body 1, and the piston rod 5 is in sliding fit with the cylinder cover 2; a first flow channel 1a is arranged in the side wall of the cylinder body 1, and the first flow channel 1a is spiral; the spiral arrangement of the first flow passage 1a prolongs the circulation path of the cooling medium in the cylinder body 1, so that the contact time of the cooling medium and the cylinder body 1 is prolonged, and the cooling effect of the cooling medium on the cylinder body 1 is improved; a cavity 4a is arranged in the piston 4, a second flow passage 5a and a third flow passage 5b are arranged in the piston rod 5, the second flow passage 5a is spiral, and the third flow passage 5b is linear; the second flow channel 5a is arranged in a spiral shape, so that the circulation path of the cooling medium in the piston rod 5 is prolonged, the contact time of the cooling medium and the piston rod 5 is prolonged, and the cooling effect of the cooling medium on the piston rod 5 is improved; the second flow passage 5a surrounds the third flow passage 5b, and the second flow passage 5a and the third flow passage 5b are respectively communicated with the cavity 4 a; a first inlet 1b is formed in the left side wall of the bottom end of the cylinder body 1, a first outlet 1c is formed in the right side wall of the top end of the cylinder body 1, and the first inlet 1b and the first outlet 1c are respectively communicated with the first flow channel 1 a; the right side wall of the top end of the piston rod 5 is provided with a second inlet 5c, the left side wall of the top end of the piston rod 5 is provided with a second outlet 5d, the second inlet 5c is communicated with the second flow passage 5a, and the second outlet 5d is communicated with the third flow passage 5 b; the first outlet 1c is communicated with the second inlet 5c through a communicating pipe 6; the communicating pipe 6 is arranged, so that the cooling medium for cooling the cylinder body 1 can continuously cool the piston rod 5, and secondary utilization of the cooling medium is realized; the outer circumferences of the cylinder body 1, the cylinder cover 2 and the cylinder bottom 3 are all sleeved with a heat insulation sleeve 7; the heat insulation sleeve 7 slows down the heat exchange between the hydraulic cylinder and the external high-temperature environment, so that the cooling effect of the cooling medium on the hydraulic cylinder is improved; a sealing ring 8 is arranged between the inner wall of the cylinder body 1 and the outer part of the top end of the cylinder bottom 3, and a sealing ring 8 and a dustproof ring 9 are arranged between the inner wall of the cylinder cover 2 and the piston rod 5; the sealing ring 8 and the dustproof ring 9 are arranged to seal and prevent dust of the hydraulic cylinder.

When the hydraulic cylinder works in a high-temperature environment, a cooling medium firstly enters the first flow channel 1a from the first inlet 1b, the cooling medium spirally rises in the first flow channel 1a until reaching the first outlet 1c, the cooling medium discharged from the first outlet 1c enters the second flow channel 5a through the communicating pipe 6 and the second inlet 5c, the cooling medium spirally descends in the second flow channel 5a until entering the cavity 4a, the cooling medium is gathered in the cavity 4a and cools the piston 4, after the cavity 4a is filled with the cooling medium, the cooling medium enters the third flow channel 5b, the cooling medium slowly rises in the third flow channel 5b until reaching the second outlet 5d, and finally the cooling medium is discharged from the second outlet 5 d. The cooling medium discharged from the second outlet 5d is recovered and cooled again by a cooling device (not shown), and the cooled cooling medium is introduced into the first inlet 1b again, thereby achieving recycling of the cooling medium.

The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only examples of the present invention, and should not be construed as limiting the present invention, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a hydraulic cylinder, includes cavity cylinder body (1), the both ends of cylinder body (1) are fixed with cylinder cap (2) and cylinder bottom (3) respectively, be equipped with in cylinder body (1) piston (4) and with piston rod (5) that piston (4) are connected, its characterized in that: a first flow channel (1a) is arranged in the side wall of the cylinder body (1), a cavity (4a) is arranged in the piston (4), a second flow channel (5a) and a third flow channel (5b) are arranged in the piston rod (5), and the second flow channel (5a) and the third flow channel (5b) are respectively communicated with the cavity (4 a).

2. A hydraulic cylinder according to claim 1, wherein: the first flow channel (1a) and the second flow channel (5a) are both helical, and the third flow channel (5b) is linear.

3. A hydraulic cylinder according to claim 1, wherein: the bottom lateral wall of cylinder body (1) is equipped with first import (1b), the top lateral wall of cylinder body (1) is equipped with first export (1c), first import (1b) and first export (1c) respectively with first runner (1a) intercommunication.

4. A hydraulic cylinder according to claim 3, wherein: and two corresponding side walls at the top end of the piston rod (5) are respectively provided with a second inlet (5c) and a second outlet (5d), the second inlet (5c) is communicated with the second flow channel (5a), and the second outlet (5d) is communicated with the third flow channel (5 b).

5. A hydraulic cylinder according to claim 4, wherein: the first outlet (1c) is communicated with the second inlet (5c) through a communicating pipe (6).

6. A hydraulic cylinder according to any one of claims 1 to 5, wherein: the outer circumferences of the cylinder body (1), the cylinder cover (2) and the cylinder bottom (3) are all sleeved with heat insulation sleeves (7).