Anti-collision hydraulic oil cylinder assembly structure facilitating pipeline arrangement

Abstract

The utility model discloses an anti-collision hydraulic oil cylinder assembly structure convenient for pipeline arrangement, which belongs to the field of engineering machinery and is characterized in that a screw seat, a small-cavity oil port and a fixed seat are positioned on the same axis, and a hydraulic pipeline connected with the small-cavity oil port can penetrate through a via hole between the fixed seat and a guide block, so that the small-cavity oil port is protected, the hydraulic pipeline can be protected, and the service life of the hydraulic pipeline is prolonged. And meanwhile, a certain hydraulic pipeline fastening effect is achieved, the structure is simple, and shaping is convenient. The hydraulic cylinder mainly comprises a cylinder body and a piston rod, a screw seat is arranged at the front end of the piston rod, a fixing seat is arranged on the cylinder body, a small-cavity oil port is arranged on the cylinder body in front of the fixing seat, the small-cavity oil port is connected with a hydraulic pipeline, a guide block is mounted on the fixing seat, the screw seat is fixed with one end of a baffle, and the other end of the baffle is slidably connected with the guide block. The small cavity oil port is located under the baffle, the fixing base is a U-shaped fixing base, and the hydraulic pipeline penetrates through a via hole formed between the U-shaped fixing base and the guide block. The device is mainly used for arranging and protecting the hydraulic oil cylinder of the excavator.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of engineering machinery, and concretely relates to a collision-proof hydraulic cylinder assembly structure facilitating pipeline arrangement. BACKGROUND

[0002] As an executing element of hydraulic system, the hydraulic cylinder can realize linear reciprocating motion, convert input pressure and flow into force and speed, and is simple and reliable in structure, so it is widely used in various fields. In the field of engineering machinery, especially excavators, the use of hydraulic cylinders is essential. The construction environment and working conditions of excavators are often harsh, and during the working process, broken stones, soil blocks, coal blocks or iron blocks may splash onto the surface of the cylinder body or the piston rod, and other external objects may collide with the cylinder, especially the piston rod, which may be damaged (bent or scratched) due to collision, causing leakage or failure to output the required thrust during cylinder movement, and the cylinder may need to be replaced in necessary cases.

[0003] The existing cylinder scheme for preventing collision is limited by the structure of the sliding block, which affects the arrangement of the cylinder pipeline, oil block and other interfaces, and also limits the design of the cylinder oil port position, which can only be designed on the side of the cylinder body and cannot be parallel to the plane of the protective plate, so the oil port cannot be protected. This results in the small cavity oil port located at the front end and the hydraulic pipeline connected thereto being exposed, which is extremely prone to damage. SUMMARY

[0004] The utility model discloses a kind of collision-proof hydraulic cylinder assembly structure facilitating pipeline arrangement, and its silk seat, small cavity oil port, fixed seat are located on the same axis, the through hole between fixed seat and guide block can be passed by the hydraulic pipeline connected with small cavity oil port, both protect small cavity oil port, also can protect hydraulic pipeline, while also play certain hydraulic pipeline fastening effect, simple structure, it is convenient to uniform type.

[0005] The utility model is realized through the following technical solutions:

[0006] A kind of collision-proof hydraulic cylinder assembly structure facilitating pipeline arrangement, including cylinder body and piston rod, the piston rod front end is equipped with silk seat, cylinder body is equipped with fixed seat, fixed seat front cylinder body is equipped with small cavity oil port, small cavity oil port connects hydraulic pipeline, fixed seat is installed with guide block, silk seat is fixed with one end of baffle, the other end of baffle is slidably connected with guide block, small cavity oil port is located directly below baffle, fixed seat is U-shaped fixed seat, hydraulic pipeline passes through the through hole formed between U-shaped fixed seat and guide block, so that baffle simultaneously shields piston rod and part of hydraulic pipeline, and can also play the role of limiting and fixing to hydraulic pipeline.

[0007] Further, the wire seat is welded on the hinge lug at the end of the piston rod through the arc bottom surface, the wire seat is provided with a threaded hole, and the baffle is installed in the threaded hole of the wire seat through bolts and gaskets.

[0008] Further, the wire seat is welded on the hinge lug at the end of the piston rod through the arc bottom surface, the wire seat is provided with a threaded hole, and the baffle is installed in the threaded hole of the wire seat through bolts and gaskets.

[0009] Further, the wire seat is welded on the hinge lug at the end of the piston rod through the arc bottom surface, the wire seat is provided with a threaded hole, and the baffle is installed in the threaded hole of the wire seat through bolts and gaskets.

[0010] Further, the wire seat is welded on the hinge lug at the end of the piston rod through the arc bottom surface, the wire seat is provided with a threaded hole, and the baffle is installed in the threaded hole of the wire seat through bolts and gaskets.

[0011] Further, the wire seat is welded on the hinge lug at the end of the piston rod through the arc bottom surface, the wire seat is provided with a threaded hole, and the baffle is installed in the threaded hole of the wire seat through bolts and gaskets.

[0012] Further, the wire seat is welded on the hinge lug at the end of the piston rod through the arc bottom surface, the wire seat is provided with a threaded hole, and the baffle is installed in the threaded hole of the wire seat through bolts and gaskets.

[0013] Compared with the prior art, the utility model has the advantages of:

[0014] 1. The wire seat, the small cavity oil port and the fixed seat are located on the same axis, the through hole between the fixed seat and the guide block can be used for the hydraulic pipeline connected with the small cavity oil port to pass through, the small cavity oil port and the hydraulic pipeline are protected, the piston rod and the cylinder body are also protected, the structure is simple, and the unified type is convenient.

[0015] 2. In addition to protecting the small cavity oil port and the hydraulic pipeline, the piston rod and the cylinder body are also protected.

[0016] 3. The guide block and the bending slide cooperate to play the roles of wear resistance and convenient sliding, and also play the roles of fixing and guiding the baffle. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the structure schematic view of the utility model;

[0018] Figure 2 is the structure schematic view of the utility model;

[0019] Figure 3 is the installation schematic view of the hydraulic pipeline of the utility model;

[0020] Figure 4 is the sectional view of A-A of the utility model;

[0021] Figure 5This is a schematic diagram of the structure of the baffle of this utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the guide block of this utility model;

[0023] Figure 7 This is a structural schematic diagram of the fixing base of this utility model;

[0024] Figure 8 This is a schematic diagram of the structure of the protective block of this utility model;

[0025] Figure 9 This is a diagram showing the usage state of this utility model.

[0026] In the diagram: 1. Screw seat; 2. Baffle; 3. Small cavity oil port; 4. Fixed seat; 5. Hydraulic pipeline; 6. Cylinder body; 7. Piston rod; 8. Guide block; 9. Protective block; 10. Bending slide; 11. Rectangular groove; 12. Frame; 13. Boom. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings.

[0028] Example 1

[0029] like Figure 1 – Figure 3 As shown, a collision-resistant hydraulic cylinder assembly structure for convenient pipeline layout includes a cylinder body 6 and a piston rod 7. The piston rod 7 has a lead seat 1 at its front end, and a fixed seat 4 on the cylinder body 6. A small cavity oil port 3 is provided on the cylinder body 6 in front of the fixed seat 4, and a large cavity oil port is provided at the rear of the cylinder body 6. The lead seat 1, the small cavity oil port 3, the fixed seat 4, and the large cavity oil port are located on the same axis. The small cavity oil port 3 is connected to the hydraulic pipeline 5. A guide block 8 is installed on the fixed seat 4. The lead seat 1 is fixed to one end of the baffle 2, and the other end of the baffle 2 is slidably connected to the guide block 8. The small cavity oil port 3 is located directly below the baffle 2. The fixed seat 4 is a U-shaped fixed seat. The hydraulic pipeline 5 passes through the through hole formed between the U-shaped fixed seat and the guide block 8, so that the baffle 2 simultaneously blocks the piston rod 7 and part of the hydraulic pipeline 5, and also plays a role in limiting and fixing the hydraulic pipeline 5.

[0030] Example 2

[0031] like Figure 4 – Figure 8As shown in the figure, a convenient pipeline arrangement anti-collision hydraulic cylinder assembly structure, the silk seat 1 is welded on the hinged lug of the piston rod 7 end through the arc bottom surface, the silk seat 1 is provided with threaded hole, the baffle 2 is installed in the threaded hole of the silk seat 1 through bolt, gasket;The fixed seat 4 is welded on the cylinder body 6 through the arc bottom surface, the guide block 8 is provided with counterbore, the fixed seat 4 is provided with threaded hole, the counterbore of the guide block 8 and the threaded hole of the fixed seat 4 are fixed through the internal hexagonal screw;The guide block 8 both ends are provided with the protection block 9, the protection block 9 is provided with rectangular groove 11, the rectangular groove 11 and the both ends of the guide block 8 are interference fit;The baffle 2 and the protection block 9 are sliding fit;The protection block 9 is nylon material, which can reduce the friction resistance when the baffle 2 slides;The baffle 2 both sides are provided with the bending slide 10, the bending slide 10 and the protection block 9 are sliding fit;This can play a guiding role (ensure that the path of the baffle 2 is always consistent with the axis of the hydraulic cylinder when moving), and can prevent the baffle 2 from producing vibration and causing deviation and misplacement under the condition of bad working condition, and the rest is the same as example 1.

[0032] As Figure 9 shown, a convenient pipeline arrangement anti-collision hydraulic cylinder assembly structure, further comprising a frame 12 and a movable arm 13, the bottom of the cylinder body 6 is connected with the frame 12 through the pin shaft, the hinged lug of the piston rod 7 end is connected to the movable arm 13 through the pin shaft, and the rest is the same as example 2.

[0033] The mounting hole opened on the baffle 2 is a long hole, which is convenient for installation. During the construction process of the excavator, the baffle 2 moves with the piston rod 7, which can prevent the impact and knock of the flying stone and iron block on the cylinder body 6, the piston rod 7 and the hydraulic pipeline 5 connected with the small cavity oil port 3;When the piston rod 7 is retracted, the baffle 2 can protect the cylinder body 6, the piston rod 7, the hydraulic pipeline 5 connected with the small cavity oil port 3 and the hydraulic pipeline 5 connected with the large cavity oil port respectively.

Claims

1. A collision-proof hydraulic cylinder assembly structure for facilitating piping arrangement, comprising a cylinder body (6) and a piston rod (7), characterized by: The piston rod (7) is provided with a wire seat (1) at the front end, the cylinder (6) is provided with a fixed seat (4), the front of the fixed seat (4) is provided with a small cavity oil port (3) on the cylinder (6), the small cavity oil port (3) is connected with a hydraulic pipeline (5), the fixed seat (4) is provided with a guide block (8), the wire seat (1) is fixed with one end of a baffle (2), the other end of the baffle (2) is slidably connected with the guide block (8), the small cavity oil port (3) is located directly below the baffle (2), the fixed seat (4) is a U-shaped fixed seat, and the hydraulic pipeline (5) passes through the through hole formed between the U-shaped fixed seat and the guide block (8).

2. The crash proof hydraulic cylinder assembly arrangement of claim 1, wherein: The wire seat (1) is welded on the hinged lug at the end of the piston rod (7) through an arc-shaped bottom surface, the wire seat (1) is provided with a threaded hole, and the baffle (2) is installed in the threaded hole of the wire seat (1) through bolts and gaskets.

3. The crash proof hydraulic cylinder assembly arrangement of claim 1, wherein: The fixed seat (4) is welded on the cylinder (6) through an arc-shaped bottom surface, the guide block (8) is provided with a countersunk hole, the fixed seat (4) is provided with a threaded hole, and the countersunk hole of the guide block (8) and the threaded hole of the fixed seat (4) are fixed through a hexagonal socket head screw.

4. The crash proof hydraulic cylinder assembly arrangement of claim 1, wherein: The guide block (8) is provided with a protection block (9) at both ends, the protection block (9) is provided with a rectangular groove (11), and the rectangular groove (11) is in interference fit with both ends of the guide block (8); the baffle (2) is in sliding fit with the protection block (9).

5. The crashworthy hydraulic cylinder assembly arrangement of claim 4, wherein: The protection block (9) is made of nylon.

6. The crashworthy hydraulic cylinder assembly arrangement of claim 4, wherein: The baffle (2) is provided with a bent slide (10) on both sides, and the bent slide (10) is in sliding fit with the protection block (9).

7. The crashworthy hydraulic cylinder assembly of any one of claims 1-6, wherein: The protection block (9) is made of nylon. The baffle (2) is provided with a bent slide (10) on both sides, and the bent slide (10) is in sliding fit with the protection block (9). Further comprising a frame (12) and a movable arm (13), the bottom of the cylinder (6) is connected with the frame (12) through a pin shaft, and the hinged lug at the end of the piston rod (7) is connected to the movable arm (13) through a pin shaft.

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