Protective sleeve for hydraulic part

Abstract

The protective sleeve comprises a front disc seat and a rear disc seat arranged on one side of the front disc seat, a through hole is formed in the rear disc seat, a corrugated telescopic protective sleeve is fixed between the opposite outer walls of the front disc seat and the rear disc seat, a cage-shaped protective frame is installed on the peripheral face of the front disc seat and the peripheral face of the rear disc seat, and the front disc seat and the rear disc seat are connected through the cage-shaped protective frame. A front rubber sleeve used for being sleeved with a piston rod of the hydraulic cylinder is fixed to the outer wall of the side, away from the rear disc seat, of the front disc seat. The cage-shaped protective frame is additionally arranged outside the telescopic protective sleeve, so that the protective performance of the hydraulic cylinder can be remarkably enhanced, broken stones, soil and other foreign matters in an external environment can be effectively blocked by the cage-shaped protective frame, direct impact of the broken stones, the soil and the other foreign matters on the protective sleeve is reduced, and meanwhile, the protective sleeve is prevented from being damaged during frequent digging or shoveling operation. Due to the arrangement of the cage type protection frame, the external impact force can be effectively dispersed to the protection sleeve, and therefore the probability that the impact force is directly transmitted to the hydraulic cylinder is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to excavator protection technical field, concretely is a kind of protective sleeve for hydraulic part. BACKGROUND

[0002] The protective sleeve for hydraulic cylinder of building excavator is the key component to protect the external structure of hydraulic cylinder, and its structural design mainly consists of four parts: sleeve, sealing ring, fixing device and air hole.The sleeve is the main body of the protective sleeve, and is usually made of wear-resistant and corrosion-resistant materials such as rubber or polyurethane, with an inner diameter matching the outer diameter of the hydraulic cylinder to ensure a tight fit.The sealing ring is located at the upper and lower ends of the protective sleeve, and plays a role in preventing water and dust from entering, thereby ensuring good sealing performance.The fixing device such as clamp or buckle ensures that the protective sleeve does not shift or fall off during the operation of the hydraulic cylinder.This type of protective sleeve can effectively block dust, moisture and other substances in the external environment from entering the internal part of the hydraulic cylinder, preventing the contamination of hydraulic oil and rusting.As disclosed in the authorized announcement No.CN215857958U, a protective sleeve for hydraulic part of building excavator includes a mounting seat, an active slot is formed in the inside of the mounting seat, an active seat is connected to the top of the active slot, a connecting seat one is connected to the top of the active seat, an extension protective sleeve is connected to the top of the connecting seat one, and a connecting seat two is connected to the top of the extension protective sleeve.The extension protective sleeve is installed on the hydraulic part of the excavator, and when the hydraulic part of the excavator is working, the extension protective sleeve also works with the hydraulic part of the excavator, effectively protecting the hydraulic part of the excavator from external damage during work.However, in the process of using this technical solution, the cylinder body and piston rod of the hydraulic cylinder are only protected by the extension protective sleeve, and the debris and soil generated during construction work can still hit the extension protective sleeve.The impact force is still transmitted to the hydraulic cylinder due to the softness of the extension protective sleeve material, and the piston rod and cylinder body inside the hydraulic cylinder are still at high risk of damage, especially during frequent excavation or earthmoving operations. SUMMARY

[0003] The utility model aims at providing a protective sleeve for hydraulic part, the front disc seat and the rear disc seat are installed on the piston rod and the cylinder body of the hydraulic cylinder through the screwing type stainless steel hoop and the embedded type hoop respectively, when the hydraulic cylinder is extended and contracted, the extension protective sleeve between the front disc seat and the rear disc seat is also elongated and shortened, and the cage type protective frame is located outside the extension protective sleeve to further block the debris, soil and other foreign matters in the working environment, reduce the risk of impact on the extension protective sleeve, and solve the problems raised in the above background technology.

[0004] To achieve the above object, the utility model provides the following technical scheme: A protection sleeve for hydraulic parts, including front disc seat and rear disc seat set on one side of front disc seat, the inside of rear disc seat is provided with through -hole, the opposite outer wall between front disc seat, rear disc seat is fixed with bellows expansion protection sleeve, the outer periphery of front disc seat, rear disc seat is installed with cage type protection frame, the outer wall of one side of front disc seat away from rear disc seat is fixed with front rubber sleeve for with hydraulic cylinder piston rod sleeve, the outer periphery of front rubber sleeve is installed with screw type stainless steel hoop for tightening front rubber sleeve, the outer wall of one side of rear disc seat away from front disc seat is installed with embedded hoop, embedded hoop is used for with hydraulic cylinder body connection.

[0005] Preferably, the bellows expansion protection sleeve is made of a component of silica gel, TPU or TPE material.

[0006] Preferably, the front rubber sleeve is integrally formed with an annular stopper on the outside of the opening at one end away from the front disc seat.

[0007] Preferably, the cage type protection frame includes a plurality of first lugs and second lugs integrally formed on the outer periphery of the front disc seat and the rear disc seat, and a steel column fixed in the first lug.

[0008] Preferably, the embedded hoop includes a left half hoop and a right half hoop slidingly installed on the outer wall of one side of the rear disc seat, and a locking pin used for bolting the left half hoop and the right half hoop.

[0009] Preferably, two dovetail type ribs that are parallel and mutually symmetrical are integrally formed on the outer wall of one side of the rear disc seat, and the left half hoop and the right half hoop are slidingly installed on the dovetail type ribs.

[0010] Compared with the prior art, the utility model has the advantages that the protection sleeve for hydraulic parts can significantly enhance the protection performance of the hydraulic cylinder by adding a cage type protection frame outside the expansion protection sleeve. The structure of the cage type protection frame can effectively block gravel, soil and other foreign matters in the external environment, reduce their direct impact on the protection sleeve, and effectively disperse the external impact force to the protection sleeve during frequent digging or earthmoving operations, thereby reducing the probability of the impact force being directly transmitted to the hydraulic cylinder and alleviating the impact stress of the hydraulic cylinder. In combination with the use of the bellows expansion protection sleeve, the wear of internal elements such as the piston rod and the cylinder body of the hydraulic cylinder can be effectively reduced, and the service life of the hydraulic cylinder is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a front view structural schematic diagram of the utility model;

[0012] Figure 2 Schematic diagram of the three-dimensional structure of the utility model Figure One

[0013] Figure 3 Schematic diagram of the three-dimensional structure of the utility model Figure Two

[0014] Figure 4 Schematic diagram of the three-dimensional structure of the utility model Figure Three

[0015] Figure 5 Schematic diagram of the embedded hoop three-dimensional structure of the utility model.

[0016] In the figure: 1, front disc seat; 2, rear disc seat; 201, through hole; 202, dovetail rib; 3, corrugated telescopic protective sleeve; 4, cage type protective frame; 401, first lug; 402, steel column; 403, second lug; 5, front rubber sleeve; 6, screw type stainless steel hoop; 7, embedded hoop; 701, left half hoop; 702, right half hoop; 703, locking pin. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0018] Please refer to Figures 1-5 , the utility model provides an embodiment: a protective sleeve for hydraulic part, including front disc seat 1 and rear disc seat 2 set up in front disc seat 1 side, the inside of rear disc seat 2 is provided with through hole 201, the opposite outer wall between front disc seat 1, rear disc seat 2 is fixed with corrugated telescopic protective sleeve 3, the outer circumferential surface of front disc seat 1, rear disc seat 2 is installed with cage type protective frame 4, the outer wall of front disc seat 1 away from rear disc seat 2 side is fixed with front rubber sleeve 5 for same hydraulic cylinder piston rod sleeve, the outer circumferential surface of front rubber sleeve 5 is installed with screw type stainless steel hoop 6 for front rubber sleeve 5 is tightened, rear disc seat 2 away from the outer wall of front disc seat 1 side is installed with embedded hoop 7, embedded hoop 7 is used for same hydraulic cylinder body connection;

[0019] When the hydraulic cylinder expands outward, the corrugated telescopic protective sleeve 3 is elongated; when the hydraulic cylinder is contracted, the corrugated telescopic protective sleeve 3 is shortened again, and the telescopic action can ensure that the hydraulic cylinder remains flexible when working, and at the same time, the protection performance is not affected, in a high temperature, high humidity or chemical corrosion environment, the softness of the corrugated telescopic protective sleeve 3 can cause its performance to decline, and the cage type protective frame 4 provides a physical barrier to ensure that the hydraulic cylinder is protected even in harsh environments; ​​​

[0020] The front rubber sleeve 5 is integrally formed with an annular flange outside the opening away from one end of the front disc seat 1, the corrugated telescopic protective sleeve 3 is made of a component of silica gel, TPU or TPE material, silica gel is a material with excellent elasticity, which can maintain stable performance at high and low temperatures, and TPU and TPE materials have excellent stretchability and wear resistance, which can effectively resist frequent stretching and compression of the corrugated telescopic protective sleeve 3, and ensure that it is not easy to break in frequent work;

[0021] The cage type protective frame 4 includes a plurality of first lugs 401 and second lugs 403 integrally formed on the outer circumferential surfaces of the front disc seat 1 and the rear disc seat 2, and a steel column 402 fixed inside the first lug 401, one end of the steel column 402 penetrates to the outside of the second lug 403, when the hydraulic cylinder is in telescopic action, the front disc seat 1 is installed on the piston rod, and the rear disc seat 2 is installed on the cylinder body, then the front disc seat 1 drives the first lug 401 and the steel column 402 to move away from or close to the rear disc seat 2, at this time the steel column 402 slides relative to the second lug 403, so that the steel column 402 does not hinder the telescopic action of the hydraulic cylinder, when debris and other foreign matters appear on the construction site, the plurality of steel columns 402 first bear the impact force from the outside, reducing the direct collision of foreign matters on the corrugated telescopic protective sleeve 3, and protecting the hydraulic cylinder and its internal components by dispersing the impact force;

[0022] The embedded hoop 7 includes a left half hoop 701 and a right half hoop 702 slidingly installed on the outer wall of one side of the rear disc seat 2, and a locking pin 703 used for bolting the left half hoop 701 and the right half hoop 702, the inner walls of the left half hoop 701 and the right half hoop 702 are both embedded with an arc-shaped rubber ring, when the embedded hoop 7 is connected with the hydraulic cylinder, the staff manually slides the left half hoop 701 and the right half hoop 702, and makes them close to each other until they tightly hold the cylinder body, then the left half hoop 701 and the right half hoop 702 are locked by the locking pin 703, so as to effectively avoid the displacement or loosening of the protective sleeve caused by external impact or vibration, and this stable connection ensures that the protective sleeve always remains in the correct position during the working process of the hydraulic cylinder;

[0023] The rear disc seat 2 is integrally formed with two dovetail type ribs 202 which are parallel and symmetrical to each other on one side of the outer wall, the left half hoop 701 and the right half hoop 702 are slidingly installed on the dovetail type ribs 202, the dovetail type ribs 202 guide and support the sliding of the left half hoop 701 and the right half hoop 702, making the adjustment of the left half hoop 701 and the right half hoop 702 more smooth.

[0024] The embodiment of the application is used, first, the staff will front disc seat 1, rear disc seat 2, corrugated telescopic protective sleeve 3 and other components are sleeved on the hydraulic cylinder, so that the rear disc seat 2 is sleeved on the cylinder body part of the hydraulic cylinder, and the front rubber sleeve 5 is sleeved on the piston rod of the hydraulic cylinder, then the staff tightens the front rubber sleeve 5 by using the screwing type stainless steel hoop 6, so that the front disc seat 1 and the front rubber sleeve 5 are firmly fixed on the piston rod, and the front disc seat 1 is fixed with the cylinder body by using the embedded hoop 7, so that the protective sleeve is assembled with the hydraulic cylinder, the corrugated telescopic protective sleeve 3 is made of flexible material, which can change shape with the telescopic action of the hydraulic cylinder, and the corrugated structure not only increases the strength and wear resistance of the material, but also allows greater telescopic range, ensures that the hydraulic cylinder is not affected by external substances during work, and the cage type protective frame 4 is located outside the corrugated telescopic protective sleeve 3, which plays a further protection role. The structure design resists the impact of debris, soil and other foreign matters from the construction site, reduces the direct impact on the protective sleeve and the hydraulic cylinder, thereby reducing the probability of the impact force being directly transmitted to the hydraulic cylinder.

Claims

1. A protective sleeve for a hydraulic component, characterized by: The utility model provides a front disc seat (1) and the rear disc seat (2) of setting on one side of front disc seat (1), the inside of rear disc seat (2) is provided with through -hole (201), the opposite outer wall between front disc seat (1), rear disc seat (2) is fixed with corrugated telescopic protective sleeve (3), the outer periphery of front disc seat (1), rear disc seat (2) is installed with cage type protection frame (4), the outer wall of one side of front disc seat (1) is fixed with the front rubber bushing (5) for the sleeve of hydraulic cylinder piston rod away from rear disc seat (2), the outer periphery of front rubber bushing (5) is installed with the screw type stainless steel hoop (6) for the tightening of front rubber bushing (5), the outer wall of one side of rear disc seat (2) away from front disc seat (1) is installed with embedded hoop (7), embedded hoop (7) is used for connecting with hydraulic cylinder body.

2. The protective sleeve for hydraulic components according to claim 1, characterized in that: The corrugated telescopic protective sleeve (3) is made of a component of silica gel, TPU or TPE material.

3. The protective sleeve for hydraulic components according to claim 1, wherein: The front rubber bushing (5) is integrally formed with an annular flange on the outer side of the opening at one end away from the front disc seat (1).

4. The protective sleeve for hydraulic components according to claim 1, wherein: The cage type protection frame (4) includes a plurality of first lugs (401) and second lugs (403) integrally formed on the outer periphery of the front disc seat (1) and the rear disc seat (2), and a steel column (402) fixed in the first lug (401).

5. The protective sleeve for hydraulic components according to claim 1, wherein: The embedded hoop (7) includes a left half hoop (701) and a right half hoop (702) slidingly installed on the outer wall of one side of the rear disc seat (2), and a locking pin (703) used for bolting the left half hoop (701) and the right half hoop (702).

6. The protective sleeve for hydraulic components according to claim 5, characterized in that: The outer wall of one side of the rear disc seat (2) is integrally formed with two dovetail type ribs (202) that are parallel and mutually symmetrical, and the left half hoop (701) and the right half hoop (702) are slidingly installed on the dovetail type ribs (202).

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