Pipeline arrangement structure of bucket rod oil cylinder of excavator

Abstract

The utility model discloses a pipeline arrangement structure of a bucket rod oil cylinder of an excavator, belongs to the field of pipeline arrangement of engineering machinery, and solves the problem that an anti-explosion pilot pipeline and a high-pressure working pipeline interfere with each other in the prior art. The device mainly comprises a movable arm, a lug seat is arranged on the movable arm, the lug seat is connected with a bucket rod oil cylinder through a pin shaft, and the bucket rod oil cylinder is connected with a high-pressure working pipeline; a screw seat is arranged on the lug seat, and an anti-explosion pilot pipeline is fixed on the screw seat; the anti-explosion pilot pipeline is connected with the bucket rod oil cylinder; the anti-explosion pilot pipeline and the high-pressure working pipeline are fixed to one side of the bucket rod oil cylinder through a pipe clamp assembly. The pipe clamp assembly comprises a mounting base, and a fixing hoop, a single pipe clamp and a double pipe clamp are arranged on the mounting base. According to the pipeline fixed to the bucket rod oil cylinder, the high-pressure working pipeline and the anti-explosion pilot pipeline are both fixed to the bucket rod oil cylinder through the fixing hoop, the single-pipe clamp and the double-pipe clamp, the anti-explosion pilot pipeline and the high-pressure working pipeline do not interfere with each other and do not affect each other, and the situation that the pipelines shake does not exist.

Description

TECHNICAL FIELD

[0001] The utility model relates to engineering machinery pipeline arrangement field, concretely, especially relates to a kind of excavator bucket rod oil cylinder pipeline arrangement structure. BACKGROUND

[0002] When excavator is in hoisting condition, to prevent the danger caused by pipe burst of excavator bucket rod oil cylinder, explosion-proof valve is often added in the small cavity of excavator bucket rod oil cylinder. When hoisting, the oil inlet of bucket rod small cavity is high-pressure cavity, and the oil return of large cavity is low-pressure cavity. When rubber tube bursts due to hoisting load, the hydraulic oil in bucket rod oil cylinder small cavity can be locked by explosion-proof valve to prevent the risk of heavy object falling suddenly.

[0003] The cylinder head of bucket rod oil cylinder is connected with ear plate pin shaft. When bucket rod oil cylinder moves, bucket rod oil cylinder hole swings around ear plate pin shaft, and the pilot pipeline of explosion-proof valve fixed on bucket rod oil cylinder is stationary relative to bucket rod oil cylinder, but it moves relative to movable arm. Therefore, a part of rubber tube must change shape with bucket rod oil cylinder, which increases the risk of interference between rubber tubes and increases the risk of rubber tube wear, reduces the service life of pipeline. Therefore, a more reasonable excavator bucket rod oil cylinder pipeline arrangement structure is needed. SUMMARY

[0004] The utility model aims at providing a kind of excavator bucket rod oil cylinder pipeline arrangement structure to solve the problem of mutual interference between explosion-proof pilot pipeline and high-pressure working pipeline in prior art.

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

[0006] A kind of excavator bucket rod oil cylinder pipeline arrangement structure, including movable arm, ear seat is equipped on the movable arm, ear seat is connected with bucket rod oil cylinder by pin shaft, and bucket rod oil cylinder is connected with high-pressure working pipeline;Silicon seat is equipped on ear seat, and explosion-proof pilot pipeline is fixed on silicon seat;Explosion-proof pilot pipeline is connected with bucket rod oil cylinder;Explosion-proof pilot pipeline and high-pressure working pipeline are fixed on one side of bucket rod oil cylinder by pipe clamp component;Pipe clamp component includes mounting seat, and mounting seat is equipped with fixed hoop, single pipe clamp and double pipe clamp;The fixed hoop is fixed on bucket rod oil cylinder;Single pipe clamp fixes explosion-proof pilot pipeline;Double pipe clamp fixes high-pressure working pipeline.

[0007] Further, the high-pressure working pipeline includes explosion-proof valve, one end of the explosion-proof valve is connected with the bucket rod oil cylinder, the other end is connected with the steel pipe I, the steel pipe I is connected with the rubber tube I, and the bucket rod oil cylinder is connected with the rubber tube II.

[0008] Further, the double pipe clamp includes double-groove clamping piece I and double-groove clamping piece II, the double-groove clamping piece I is fixed on one side of the silicon seat by bolt, and the double-groove clamping piece II is fixed on one side of the mounting seat by bolt.

[0009] Further, the explosion-proof pilot pipeline comprises an oil inlet pipeline and an oil return pipeline; the oil inlet pipeline comprises a steel pipe II, one end of the steel pipe II is connected with an explosion-proof valve, the other end of the steel pipe II is connected with a rubber pipe III, and the rubber pipe III is connected with a steel pipe IV; the oil return pipeline comprises a steel pipe III, one end of the steel pipe III is connected with the explosion-proof valve, the other end of the steel pipe III is connected with a rubber pipe IV, the rubber pipe IV is connected with a steel pipe V, the steel pipe IV and the steel pipe V are fixed on the wire seat of the ear plate through a double-groove clamping piece I; and the steel pipe II and the steel pipe III are fixed on the pipe clamp assembly through a double-groove clamping piece II.

[0010] Further, the fixing hoop comprises an upper hoop and a lower hoop, the upper hoop and the lower hoop are connected through bolts, and the fixing hoop is arranged on the outer side of the arm cylinder.

[0011] Further, the mounting seat is provided with a single pipe clamp at the top, the single pipe clamp comprises an upper clamping piece and a lower clamping piece, and the upper clamping piece and the lower clamping piece are fixed on the mounting seat through bolts; and the steel pipe I is clamped between the upper clamping piece and the lower clamping piece.

[0012] Further, the double-groove clamping piece I and the double-groove clamping piece II are both in M shape.

[0013] Compared with the prior art, the explosion-proof pilot pipeline for the arm cylinder has the following beneficial effects:

[0014] 1. The explosion-proof pilot pipeline for the arm cylinder adopts a short rubber pipe design at the hinge joint of the boom ear plate, so that the pin shaft of the ear plate is always located at the middle position of the rubber pipe during the swinging of the arm cylinder, the shorter rubber pipe can adapt to the swinging of the arm cylinder, the natural bending direction of the rubber pipe changes during the swinging of the arm cylinder, and the pin shaft of the ear plate is installed from the other side to avoid interference with the pilot rubber pipe.

[0015] 2. The pipeline fixed on the arm cylinder is effectively and independently fixed on the arm cylinder through the fixing hoop, the single pipe clamp and the double pipe clamp, the explosion-proof pilot pipeline and the high-pressure working pipeline are not interfered with and affected each other during the working process of the whole machine, and the pipeline does not shake. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic view of the utility model;

[0017] Figure 2 is a structural schematic view of the high-pressure working pipeline of the utility model;

[0018] Figure 3 is a structural schematic view of the explosion-proof pilot pipeline of the utility model;

[0019] Figure 4 is a structural schematic view of the pipe clamp assembly of the utility model;

[0020] Figure 5is the mounting seat structure schematic view of the utility model;

[0021] Figure 6 is the single pipe clamp structure schematic view of the utility model;

[0022] Figure 7 is the double pipe clamp structure schematic view of the utility model;

[0023] Figure 8 is the limit attitude schematic view of the arm cylinder of the utility model Figure 1 ;

[0024] Figure 9 is the limit attitude schematic view of the arm cylinder of the utility model Figure 2 ;

[0025] Figure 10 is the ear seat part schematic view of the utility model;

[0026] In the drawing: 1, swing arm;2, high pressure working pipeline;3, anti-explosion pilot pipeline;4, arm cylinder;11, ear seat;12, silk seat;13, pin shaft;21, anti-explosion valve;22, steel pipe I;23, pipe clamp assembly;24, rubber pipe I;25, rubber pipe II;231, fixed hoop;232, mounting seat;233, single pipe clamp;31, steel pipe II;32, steel pipe III;33, double pipe clamp;34, rubber pipe III;35, rubber pipe IV;36, steel pipe IV;37, steel pipe V. DETAILED DESCRIPTION

[0027] In order to make the personnel of the prior art better understand the technical scheme of the utility model, the technical scheme of the utility model is described clearly and completely below in combination with the drawings of the utility model, based on the embodiment in the present application, other similar embodiments obtained by the person skilled in the art without making creative labor should all belong to the scope of protection of the present application. In addition, the direction words mentioned in the following embodiments, such as '' up '' '' down '' '' left '' '' right '' and the like, are only the direction of the drawing, therefore, the direction words used are used to explain and not limit the utility model creation.

[0028] The utility model is further described below in combination with the drawings.

[0029] Embodiment 1, a kind of excavator arm cylinder 4 pipeline arrangement structure, as Figure 1As shown, including the boom 1, the boom 1 is provided with lug 11, lug 11 is connected with the arm cylinder 4 through the pin shaft 13, the arm cylinder 4 is connected with high pressure working pipeline 2, the pin shaft 13 is installed from the back of lug 11, prevent interference with the silk seat 12 and its fixed on the pipeline of silk seat 12;Lug 11 is provided with silk seat 12, silk seat 12 is fixed with anti-explosion pilot pipeline 3;Anti-explosion pilot pipeline 3 is connected with arm cylinder 4;Anti-explosion pilot pipeline 3 and high pressure working pipeline 2 are fixed on one side of arm cylinder 4 through pipe clamp assembly 23;Pipe clamp assembly 23 includes mounting seat 232, mounting seat 232 is provided with three threaded holes, two of which are fixed with single pipe clamp 233, and the other threaded hole is fixed with double pipe clamp 33, mounting seat 232 is welded with fixed clamp 231;The fixed clamp 231 is fixed on the arm cylinder 4;Three single pipe clamps 233 fix high pressure working pipeline 2;Double pipe clamp 33 fixes anti-explosion pilot pipeline 3.Pipe clamp assembly 23 fixes anti-explosion pilot pipeline 3 and high pressure working pipeline 2 on the key part of arm cylinder 4 through fixed clamp 231, single pipe clamp 233 and double pipe clamp 33.

[0030] Embodiment 2, a kind of excavator arm cylinder 4 pipeline arrangement structure, as Figure 2 As shown, the high pressure working pipeline 2 includes explosion-proof valve 21, one end of explosion-proof valve 21 is connected with arm cylinder 4, the other end is connected with steel pipe I 22, steel pipe I 22 is connected with rubber pipe I 24, the large cavity of arm cylinder 4 is connected with rubber pipe II 25, rubber pipe I 24 and rubber pipe II 25 guide the high pressure working pipeline 2 of arm cylinder 4 to the boom 1. With the movement of arm, arm cylinder 4 swings around the lug pin shaft 13 of boom 1, rubber pipe I 24 and rubber pipe II 25 make natural bending change.

[0031] As shown in Figure 3 As shown, anti-explosion pilot pipeline 3 includes oil inlet pipeline and oil return pipeline, oil inlet pipeline and oil return pipeline are fixed on boom 1 through double pipe clamp 33;Oil inlet pipeline includes steel pipe II 31, one end of steel pipe II 31 is connected with the pilot oil port of explosion-proof valve 21, the other end is connected with rubber pipe III 34, rubber pipe III 34 is connected with steel pipe IV 36, and the pilot oil inlet pipeline is guided to boom 1;The oil return pipeline includes steel pipe III 32, one end of steel pipe III 32 is connected with the pilot return port of explosion-proof valve 21, the other end is connected with rubber pipe IV 35, rubber pipe IV 35 is connected with steel pipe V 37, and the pilot return pipeline is guided to boom 1. Rubber pipe III 34 and rubber pipe IV 35 are moving rubber pipes, with the movement of arm, arm cylinder 4 swings around the pin shaft 13 of boom 1, rubber pipe III 34 and rubber pipe IV 35 make natural bending change.

[0032] As shown in Figures 4-6As shown, the fixed hoop 231 includes upper and lower hoops which are connected by bolts, and the fixed hoop 231 is sleeved outside the arm cylinder 4; the upper hoop is fixedly provided with a mounting seat 232. The top of the mounting seat 232 is provided with a single pipe clamp 233, which includes upper and lower clamping pieces which are fixed to the mounting seat 232 by bolts; the upper and lower clamping pieces clamp the steel pipe I 22 therebetween.

[0033] The double pipe clamp 33 is a two-hole pressing plate pipe clamp, which includes double-groove clamping pieces I and II, the double-groove clamping piece I is fixed to one side of the wire seat 12 by bolts, and the double-groove clamping piece II is fixed to one side of the mounting seat 232 by bolts; the steel pipe II 31 and the steel pipe III 32 are pressed on the mounting seat 232 by the double-groove clamping piece II, so that the steel pipe II 31 and the steel pipe III 32 are fixed together with the arm cylinder 4; at the same time, the double-groove clamping piece I is also used to press the steel pipe IV 36 and the steel pipe V 37 on the wire seat 12 of the ear seat 11 of the boom 1; as shown, Figure 7 As shown, the double-groove clamping pieces I and II are both in M shape. The rest is the same as that in Embodiment 1.

[0034] When the arm is in a vertical posture, as shown, Figure 8 As shown, the swing angle between the arm cylinder 4 and the pin shaft 13 is the largest; when the arm is in an extreme position of outward swing, as shown, Figure 9 As shown, the swing angle between the arm cylinder 4 and the pin shaft 13 is the smallest, and at this time, the natural bending direction of the 34 rubber pipe three and the 35 rubber pipe four.

[0035] Regardless of the posture, the steel pipe IV 36 and the steel pipe V 37 in the explosion-proof pilot line 3 of the arm cylinder 4 are always located below the rubber pipes I 24 and II of the high-pressure working line 2 of the arm cylinder 4. The rubber pipe III 34 and the rubber pipe IV 35 in the explosion-proof pilot line 3 of the arm cylinder 4 are always on the side of the rubber pipes I 24 and II 25 in the high-pressure working line 2 of the arm cylinder 4. The steel pipe II 31 and the steel pipe III 32 in the explosion-proof pilot line 3 of the arm cylinder 4 are always below the steel pipe I 22 in the high-pressure working line 2 of the arm cylinder 4, and from the ground, the overall excavator, the steel pipe II 31 and the steel pipe III 32 are hidden below the steel pipe I 22. The pin shaft 13 is always located at the approximate middle position of the pipe body of the rubber pipe III 34 and the rubber pipe IV 35, and the rubber pipe III 34 and the rubber pipe IV 35 adjust the bending posture according to the movement of the arm. The rubber pipes and steel pipes of the explosion-proof pilot line 3 and the high-pressure working line 2 are independently distributed and do not interfere with each other, which is simple and beautiful.

[0036] The above has described the utility model in detail, the above is described, only for the preferred embodiment of the utility model, cannot limit the utility model implementation scope, namely, all equivalent changes and modifications made according to the scope of the present application should still belong to the utility model coverage.

Claims

1. An excavator arm cylinder piping arrangement comprising a boom (1), characterised in that: The movable arm (1) is provided with an ear seat (11), the ear seat (11) is connected with a stick oil cylinder (4) through a pin shaft (13), the stick oil cylinder (4) is connected with a high-pressure working pipeline (2); the ear seat (11) is provided with a wire seat (12), the wire seat (12) is fixed with an anti-explosion pilot pipeline (3); the anti-explosion pilot pipeline (3) is connected with the stick oil cylinder (4); the anti-explosion pilot pipeline (3) and the high-pressure working pipeline (2) are fixed on one side of the stick oil cylinder (4) through a pipe clamp assembly (23); the pipe clamp assembly (23) comprises a mounting seat (232), the mounting seat (232) is provided with a fixed clamp (231), a single pipe clamp (233) and a double pipe clamp (33); the fixed clamp (231) is fixed on the stick oil cylinder (4); the single pipe clamp (233) fixes the high-pressure working pipeline (2); the double pipe clamp (33) fixes the anti-explosion pilot pipeline (3).

2. The excavator arm cylinder plumbing arrangement of claim 1, characterized in that: The high-pressure working pipeline (2) comprises an anti-explosion valve (21), one end of the anti-explosion valve (21) is connected with the stick oil cylinder (4), the other end is connected with a steel pipe I (22), the steel pipe I (22) is connected with a rubber pipe I (24), the stick oil cylinder (4) is connected with a rubber pipe II (25).

3. The excavator stick cylinder plumbing arrangement of claim 2, characterized in that: The double pipe clamp (33) comprises a double-groove clamp plate I and a double-groove clamp plate II, the double-groove clamp plate I is fixed on one side of the wire seat (12) through a bolt, the double-groove clamp plate II is fixed on one side of the mounting seat (232) through a bolt.

4. The excavator stick cylinder plumbing arrangement of claim 3, characterized in that: The anti-explosion pilot pipeline (3) comprises an oil inlet pipeline and an oil return pipeline; the oil inlet pipeline comprises a steel pipe II (31), one end of the steel pipe II (31) is connected with the anti-explosion valve (21), the other end is connected with a rubber pipe III (34), the rubber pipe III (34) is connected with a steel pipe IV (36); the oil return pipeline comprises a steel pipe III (32), one end of the steel pipe III (32) is connected with the anti-explosion valve (21), the other end is connected with a rubber pipe IV (35), the rubber pipe IV (35) is connected with a steel pipe V (37), the steel pipe IV (36) and the steel pipe V (37) are fixed on the wire seat (12) of the ear seat (11) through the double-groove clamp plate I; the steel pipe II (31) and the steel pipe III (32) are fixed on the pipe clamp assembly (23) through the double-groove clamp plate II.

5. The excavator stick cylinder plumbing arrangement of claim 4, characterized in that: The fixed clamp (231) comprises an upper clamp and a lower clamp, the upper clamp and the lower clamp are connected through a bolt, the fixed clamp (231) is sleeved outside the stick oil cylinder (4); the upper clamp is fixedly provided with the mounting seat (232).

6. The excavator stick cylinder plumbing arrangement of claim 4, characterized in that: The mounting seat (232) is provided with the single pipe clamp (233) at the top, the single pipe clamp (233) comprises an upper clamp plate and a lower clamp plate, the upper clamp plate and the lower clamp plate are fixed with the mounting seat (232) through a bolt; the upper clamp plate and the lower clamp plate clamp the steel pipe I (22) between them.

7. The excavator stick cylinder plumbing arrangement of claim 4, characterized in that: The double-groove clamp plate I and the double-groove clamp plate II are both in M shape.

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