Hydraulic oil cylinder with external protection structure

Abstract

The utility model relates to a hydraulic oil cylinder with an external protection structure, and aims to solve the problems that a piston rod of the conventional hydraulic oil cylinder is not protected, so that the piston rod is easy to collide and damage due to external protection during stretching and retracting, heat generated during working of the hydraulic oil cylinder is difficult to effectively dissipate, and the service life of the hydraulic oil cylinder is prolonged. The utility model relates to a hydraulic oil cylinder, in particular to a hydraulic oil cylinder, which solves the technical problems in the prior art that the oil temperature continuously rises to an overhigh temperature, the aging of hydraulic oil and the deterioration of oil seal are accelerated, and the system performance and the service life of the hydraulic oil cylinder are influenced, and comprises a cylinder barrel and a piston rod, the piston rod is movably connected to the top of the cylinder barrel, a heat dissipation copper barrel is mounted on the outer side of the cylinder barrel, and a plurality of rectangular grooves are formed in the outer side of the heat dissipation copper barrel; the hydraulic oil cylinder has the advantages that movement of the piston rod is protected all the time, the piston rod can be effectively prevented from being damaged due to collision in use, the heat dissipation area of the heat dissipation copper barrel is increased, the heat dissipation effect of the cylinder barrel is improved, and the service life of the hydraulic oil cylinder is further prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of hydraulic oil cylinder, concretely to a hydraulic oil cylinder with external protection structure. BACKGROUND

[0002] Hydraulic cylinder is the hydraulic energy conversion mechanical energy, do linear reciprocating motion (or swing motion) hydraulic actuator. It is simple in structure, reliable in operation. When it is used to realize reciprocating motion, the speed reducer can be dispensed with, and there is no transmission gap, and the movement is stable, so it is widely used in various mechanical hydraulic systems. The output force of hydraulic cylinder and the effective area of piston are proportional to the pressure difference on both sides; the structure type of hydraulic cylinder has piston cylinder, plunger cylinder, swing cylinder three major categories, piston cylinder and plunger cylinder realize reciprocating linear motion, output speed and thrust, swing cylinder realizes reciprocating swing, output angular velocity (speed) and torque. In addition to the use of a single hydraulic cylinder, two or more hydraulic cylinders can be combined or used with other mechanisms to complete special functions.

[0003] The traditional hydraulic oil cylinder does not have protection for the piston rod of the hydraulic oil cylinder, so that the piston rod is not protected when it is stretched and contracted, and is easy to collide and be damaged. In addition, the heat generated during the operation of the hydraulic oil cylinder is difficult to effectively dissipate, and the oil temperature will continue to rise to a high temperature, which will accelerate the aging of the hydraulic oil and the deterioration of the oil seal, affect the system performance and service life. Therefore, a new technical solution is needed to solve the problem. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming the insufficient of prior art, adapting to the actual need, provide a kind of hydraulic oil cylinder with external protection structure to solve the current hydraulic oil cylinder does not have protection for the piston rod of the hydraulic oil cylinder, so that the piston rod is not protected when it is stretched and contracted, and is easy to collide and be damaged. In addition, the heat generated during the operation of the hydraulic oil cylinder is difficult to effectively dissipate, and the oil temperature will continue to rise to a high temperature, which will accelerate the aging of the hydraulic oil and the deterioration of the oil seal, affect the system performance and service life of technical problem.

[0005] In order to realize the utility model of the purpose, the technical scheme that the utility model adopts is: design a kind of hydraulic oil cylinder with external protection structure, including cylinder barrel and piston rod, the piston rod is movably connected at the top of cylinder barrel, the outside of cylinder barrel is equipped with heat dissipation copper cylinder, a plurality of rectangular grooves are formed in the outside of heat dissipation copper cylinder, the top of piston rod is connected with connecting disc, the top of connecting disc is equipped with upper mounting ring, the bottom of cylinder barrel is provided with lower mounting ring, the bottom of connecting disc is provided with a plurality of protection rods, and a plurality of protection rods are distributed in a circle, a plurality of protection rods are connected with connecting ring between the bottom, the connecting ring is slidably sleeved on the outside of heat dissipation copper cylinder, and the inlet pipe and the outlet pipe are communicated with the upper and lower sides of one end of cylinder barrel.

[0006] Preferably, the inner wall of the connecting ring is provided with a plurality of rectangular blocks, and the plurality of rectangular blocks are respectively connected in the plurality of rectangular grooves in a sliding mode.

[0007] Preferably, the inner part of the connecting ring and the outer side of the rectangular block are connected with cleaning brushes, and the cleaning brushes are in contact with the outer side of the heat dissipation copper cylinder and the inner cavity of the rectangular groove.

[0008] Preferably, a plurality of first bolts are penetrated through one end of the connecting disc close to the upper mounting ring, the plurality of first bolts are respectively corresponding to the plurality of protective rods, and the plurality of first bolts are respectively threadedly connected with the top end surfaces of the plurality of protective rods.

[0009] Preferably, the outer side of the piston rod is sleeved with a telescopic protective pipe, and the two ends of the telescopic protective pipe are respectively connected with the connecting disc and the cylinder.

[0010] Preferably, the outer sides of the cylinder are respectively provided with a lower fixing ring and an upper fixing ring, the upper fixing ring and the lower fixing ring are penetrated through with second bolts, and the second bolts are threadedly connected with the surface of the heat dissipation copper cylinder.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] 1. The utility model discloses a piston rod, a connecting disc, a protective rod, a cylinder, a heat dissipation copper cylinder and a rectangular groove are combined, when the piston rod is telescopic, the protective rod and the connecting ring are driven by the connecting disc and are synchronous on the outer side of the cylinder, so that the movement of the plurality of protective rods is protected to the piston rod all the time, and the piston rod can be effectively prevented from being damaged by collision in use, and the cylinder can be protected by the heat dissipation copper cylinder, and the heat dissipation area of the heat dissipation copper cylinder is increased by the rectangular groove, so that the heat dissipation effect of the cylinder is improved, and the service life of the hydraulic oil cylinder is further prolonged.

[0013] 2. The utility model discloses a rectangular block and a cleaning brush are combined, the rectangular block moves in the rectangular groove in a guided mode, so that the stability of the connecting ring which is sleeved on the outer side of the heat dissipation copper cylinder is improved, and the dust adsorbed on the outer side of the heat dissipation copper cylinder can be cleaned when the piston rod is telescopic by the cleaning brush, so that the dust can be prevented from affecting the heat dissipation effect of the cylinder. DRAWINGS

[0014] Figure 1 It is the whole structure schematic diagram of the utility model;

[0015] Figure 2 It is the whole sectional structure schematic diagram of the utility model;

[0016] Figure 3 It is the protective rod and the connecting disc and the connecting ring connecting structure schematic diagram of the utility model.

[0017] Figure: 1, cylinder; 11, piston rod; 12, upper mounting ring; 13, oil inlet pipe; 14, oil outlet pipe; 15, lower mounting ring; 16, connecting disc; 2, lower fixed ring; 21, upper fixed ring; 22, second bolt; 23, copper heat dissipation cylinder; 24, rectangular groove; 3, protection rod; 31, first bolt; 4, connecting ring; 41, rectangular block; 42, cleaning brush; 5, telescopic protection pipe. DETAILED DESCRIPTION

[0018] The utility model is further illustrated below in combination with the drawings and examples:

[0019] Example 1: a hydraulic cylinder with external protection structure, referring to Figures 1 to 3 , including cylinder 1 and piston rod 11, the piston rod 11 is movably connected at the top of cylinder 1, the outer side of cylinder 1 is provided with copper heat dissipation cylinder 23, the outer side of copper heat dissipation cylinder 23 is provided with multiple rectangular grooves 24, the top of piston rod 11 is connected with connecting disc 16, the top of connecting disc 16 is provided with upper mounting ring 12, the bottom of cylinder 1 is provided with lower mounting ring 15, the bottom of multiple protection rods 3 is connected with connecting ring 4, and multiple protection rods 3 are circularly and equidistantly distributed, multiple protection rods 3 are connected with connecting ring 4 between the bottom, connecting ring 4 is slidably sleeved on the outer side of copper heat dissipation cylinder 23, one end of cylinder 1 is respectively communicated with oil inlet pipe 13 and oil outlet pipe 14 on the upper and lower sides, when the piston rod 11 is telescopic, the protection rod 3 and the connecting ring 4 are driven by the connecting disc 16 and are moved synchronously on the outer side of cylinder 1, so that multiple protection rods 3 protect the movement of piston rod 11 all the time, and then the piston rod 11 can be effectively prevented from being damaged by collision in use, and cylinder 1 can be protected by copper heat dissipation cylinder 23, at the same time, the heat dissipation area of copper heat dissipation cylinder 23 is increased by cooperating with rectangular groove 24, and then the heat dissipation effect of cylinder 1 is improved, and the service life of the hydraulic cylinder is further prolonged.

[0020] Specifically, referring to Figure 2 and Figure 3 , the inner wall of connecting ring 4 is provided with multiple rectangular blocks 41, multiple rectangular blocks 41 are slidably connected in multiple rectangular grooves 24 respectively, cleaning brush 42 is connected in the inner side of connecting ring 4 and the outer side of rectangular block 41, cleaning brush 42 is in contact with the outer side of copper heat dissipation cylinder 23 and the inner cavity of rectangular groove 24, through the guided movement of rectangular block 41 in rectangular groove 24, the stability of connecting ring 4 slidably sleeved on the outer side of copper heat dissipation cylinder 23 is improved, at the same time, cooperating with cleaning brush 42 can clean the dust adsorbed on the outer side of copper heat dissipation cylinder 23 when the piston rod 11 is telescopic, and then the dust can be prevented from affecting the heat dissipation effect of cylinder 1.

[0021] Further, referring to Figure 1The connecting disc 16 is penetrated by a plurality of first bolts 31 near one end of the upper mounting ring 12, the plurality of first bolts 31 correspond to the plurality of protective rods 3 respectively, and the plurality of first bolts 31 are threadedly connected with top end surfaces of the plurality of protective rods 3 respectively, so that the connecting disc 16 is separated from the protective rods 3 by screwing the first bolts 31, and the piston rod 11 is conveniently maintained.

[0022] It is worth noting that, referring to Figure 2 The piston rod 11 is sleeved with an elastic protective pipe 5 on the outside, and two ends of the elastic protective pipe 5 are connected with the connecting disc 16 and the cylinder 1 respectively, so that the piston rod 11 is conveniently shielded, and damage of the hydraulic oil cylinder caused by dust adsorbed on the piston rod 11 entering the cylinder 1 is avoided.

[0023] It is worth noting that, referring to Figure 1 The cylinder 1 is provided with a lower fixing ring 2 and an upper fixing ring 21 on the outside respectively, the upper fixing ring 21 and the lower fixing ring 2 are penetrated by second bolts 22, the second bolts 22 are threadedly connected with surfaces of heat dissipation copper cylinders 23, and the heat dissipation copper cylinders 23 are fixed by screwing the second bolts 22, so that stability of the heat dissipation copper cylinders 23 on the outside of the cylinder 1 is improved.

[0024] In addition, the components of the utility model are all general standard components or components known by the person skilled in the art, the structure and principle of which are known by the person skilled in the art through technical manuals or through conventional experimental methods, and the person skilled in the art can realize them, and the content protected by the utility model does not involve improvement of the internal structure and method.

[0025] The utility model discloses an embodiment discloses a preferred embodiment, but is not limited to this, and the person skilled in the art, very easily according to the above-mentioned embodiment, the spirit of the utility model is appreciated, and different inferences and changes are made, but as long as not departing from the spirit of the utility model, are in the protection range of the utility model.

Claims

1. Hydraulic cylinder with external protection, comprising a cylinder barrel (1) and a piston rod (11), characterized in that The piston rod (11) is movably connected at the top of the cylinder barrel (1), a heat dissipation copper cylinder (23) is installed outside the cylinder barrel (1), a plurality of rectangular grooves (24) are formed in the outer side of the heat dissipation copper cylinder (23), a connecting disc (16) is connected at the top of the piston rod (11), an upper mounting ring (12) is installed at the top of the connecting disc (16), a lower mounting ring (15) is arranged at the bottom of the cylinder barrel (1), a plurality of protective rods (3) are arranged at the bottom of the connecting disc (16), and the plurality of protective rods (3) are circularly and equidistantly distributed, a connecting ring (4) is connected between the bottoms of the plurality of protective rods (3), the connecting ring (4) is slidably sleeved outside the heat dissipation copper cylinder (23), and an oil inlet pipe (13) and an oil outlet pipe (14) are respectively communicated with the upper and lower sides of one end of the cylinder barrel (1).

2. A hydraulic cylinder with external protection according to claim 1, characterized in that, A plurality of rectangular blocks (41) are installed on the inner wall of the connecting ring (4), and the plurality of rectangular blocks (41) are slidably connected in the plurality of rectangular grooves (24) respectively.

3. The hydraulic cylinder with external protection according to claim 1, wherein The inner part of the connecting ring (4) and the outer side of the rectangular block (41) are both connected with cleaning brushes (42), and the cleaning brushes (42) are in contact with the outer side of the heat dissipation copper cylinder (23) and the inner cavity of the rectangular groove (24).

4. The hydraulic cylinder with external protection according to claim 1, wherein A plurality of first bolts (31) are penetrated through one end of the connecting disc (16) close to the upper mounting ring (12), the plurality of first bolts (31) correspond to the plurality of protective rods (3) respectively, and the plurality of first bolts (31) are threadedly connected with the top end surfaces of the plurality of protective rods (3) respectively.

5. The hydraulic cylinder with external protection according to claim 1, wherein, The outer side of the piston rod (11) is sleeved with a telescopic protective pipe (5), and the two ends of the telescopic protective pipe (5) are connected with the connecting disc (16) and the cylinder barrel (1) respectively.

6. The hydraulic cylinder with external protection according to claim 1, wherein The outer sides of the cylinder barrel (1) are both respectively installed with a lower fixed ring (2) and an upper fixed ring (21), the upper fixed ring (21) and the lower fixed ring (2) are both penetrated through with second bolts (22), and the second bolts (22) are threadedly connected with the surface of the heat dissipation copper cylinder (23).

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