Axial locking type fixing structure of hopper lifting hydraulic cylinder of mining truck

Abstract

The invention belongs to the field of mining truck hopper hydraulic lifting systems, and discloses an axial locking type fixing structure of a mining truck hopper lifting hydraulic cylinder, the axial locking type fixing structure comprises an outer side plate, a frame fixing plate, an anti-shearing sleeve and a split type cylinder, a through hole is formed in the middle of the outer side plate and the frame fixing plate, and the anti-shearing sleeve penetrates through the through hole; an anti-shearing sleeve is nested on the outer side of the split type cylinder, the anti-shearing sleeve and the inner side of the frame fixing plate are pressed tightly through the split type cylinder, and the outer side of the frame fixing plate is pressed tightly through the outer side plate; the outer side plate, the frame fixing plate, the shear-resistant sleeve and the split type cylinder are connected through fasteners. Accurate positioning is achieved through the shear-resistant sleeve, the shear-resistant sleeve disperses the lateral load of the hydraulic cylinder, disassembly and maintenance can be achieved after outer-layer welding seams are ground away, and the equipment reliability and maintenance efficiency are greatly improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of hydraulic lifting system of mine truck hopper, in particular to an axial locking type fixing structure of mine truck hopper lifting hydraulic cylinder. BACKGROUND

[0002] The traditional hydraulic cylinder support is welded by single layer steel plate or integrally casted, which has the following defects: the welding thermal deformation leads to the axis skew of the hinged hole, thus causing the hydraulic cylinder movement to be stuck; the whole frame needs to be cut for maintenance, resulting in long downtime; the weld is easy to crack under high load impact, which has safety hazards. SUMMARY

[0003] In view of the problems such as hydraulic cylinder sticking caused by welding deformation, the purpose of the present application is to provide an axial locking type fixing structure of mine truck hopper lifting hydraulic cylinder which is detachable, impact-resistant and easy to maintain.

[0004] In order to further achieve the above purpose, the present application adopts the following technical scheme: An axial locking type fixing structure of mine truck hopper lifting hydraulic cylinder, comprising an outer side plate, a frame fixing plate, a shear sleeve and a split cylinder, the outer side plate and the frame fixing plate are provided with a through hole in the middle for the shear sleeve to pass through; the split cylinder is nested with the shear sleeve on the outside, the shear sleeve and the frame fixing plate are pressed tightly by the split cylinder on the inside, and the frame fixing plate is pressed tightly by the outer side plate on the outside; the outer side plate, the frame fixing plate, the shear sleeve and the split cylinder are connected by fasteners.

[0005] Optionally, the shear sleeve comprises a positioning boss and a sleeve fixed with the positioning boss; the split cylinder comprises an inner layer plate, an axial positioning boss fixed with the inner layer plate, and a hinged cylinder fixed with the outer end of the axial positioning boss, the hinged cylinder is used to connect the end of the hydraulic cylinder piston rod.

[0006] Further, the axial positioning boss is arranged in the middle of one side of the inner layer plate and is fixed with the inner layer plate by bolts.

[0007] Further, the outer contour size of the positioning boss is larger than the diameter of the sleeve, forming a stepped end face so that the positioning boss abuts against the inner side of the inner layer plate, and is pressed tightly on the frame fixing plate by the outer side plate.

[0008] Preferably, the hinged cylinder and the axial positioning boss are welded as a whole, and the positioning boss and the sleeve are welded as a whole.

[0009] Preferably, the thickness of the inner layer plate is smaller than the thickness of the outer side plate.

[0010] Preferably, the positioning boss outer periphery is welded with the outer layer plate perforation; the inner layer plate is welded with the positioning boss outer periphery.

[0011] Optionally, the outer side plate perforation diameter is 0.3-0.8mm larger than the positioning boss outer diameter.

[0012] Preferably, the fastener is a bolt.

[0013] Compared with the prior art, the advantages of the present application are: 1. Welding stress dispersion: double layer welds share shear force; 2. Quick repair: only the outer layer plate and shear sleeve weld is ground off to replace; 3. High precision positioning: axial positioning boss eliminates axis offset caused by welding; 4. Impact resistance: outer side plate resists hydraulic cylinder lateral load. BRIEF DESCRIPTION OF DRAWINGS

[0014] The drawings described herein are used to provide further understanding of the present application, and form a part of the present application. The illustrative embodiments of the present application and their description serve to explain the present application, and do not constitute an improper limitation of the present application. In the drawings: Figure 1 is a structural schematic diagram of the present application; Figure 2 is a part separation schematic diagram of the present application; Figure 3 is a left side schematic diagram of the present application; Figure 1 is a right side schematic diagram of the present application. Figure 4 is a right side schematic diagram of the present application. Figure 1 Explanation of reference signs:

[0015] 1-outer side plate; 2-frame fixed plate 3-shear sleeve, 3.1-positioning boss, 3.2-sleeve; 4-split type cylinder, 4.1-inner layer plate, 4.2-axial positioning boss, 4.3-hinged cylinder. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application.

[0017] An axial locking type fixing structure of a mine truck hopper lifting hydraulic cylinder, like Figures 1 to 4 ​As shown, it comprises an outer plate 1, a frame fixing plate 2, a shear sleeve 3 and a split cylinder 4, the outer plate 1 and the frame fixing plate 2 are centrally provided with a through hole for the shear sleeve 3 to pass through; the split cylinder 4 is nested with the shear sleeve 3 on the outside, the shear sleeve 3 is pressed tightly with the frame fixing plate 2 on the inside through the split cylinder 4, and the frame fixing plate 2 is pressed tightly on the outside through the outer plate 1; the outer plate 1, the frame fixing plate 2, the shear sleeve 3 and the split cylinder 4 are connected through bolts.

[0018] Specifically, the shear sleeve 3 comprises a positioning boss 3.1 and a sleeve 3.2 fixed with the positioning boss 3.1; the split cylinder 4 comprises an inner layer plate 4.1, an axial positioning boss 4.2 fixed with the inner layer plate 4.1 and a hinged cylinder 4.3 fixed with the outer end of the axial positioning boss 4.2, which is used for connecting the end of the hydraulic cylinder piston rod.

[0019] In the application, the axial positioning boss 4.2 is centrally arranged on one side of the inner layer plate 4.1 and is fixed with the inner layer plate 4.1 through bolt connection.

[0020] In the application, the outer contour size of the positioning boss 3.1 is larger than the diameter of the sleeve 3.2, a stepped end face is formed so that the positioning boss 3.1 abuts against the inner side of the inner layer plate 4.1 and is pressed tightly on the frame fixing plate 2 through the outer plate 1, so as to facilitate abutting against the inner side of the frame fixing plate 2 and limiting the displacement in the X direction (perpendicular to the frame fixing plate 2 direction).

[0021] In the application, the hinged cylinder 4.3 is welded integrally with the axial positioning boss 4.2, and the positioning boss 3.1 is welded integrally with the sleeve 3.2, so as to ensure the overall strength of the connection.

[0022] In the application, since the shear strength is mainly guaranteed by the outer plate 1 and the welding seam, the inner layer plate 4.1 mainly guarantees the accurate radial position, therefore, the thickness of the inner layer plate 4.1 is smaller than the thickness of the outer plate 1, so as to prevent interference with other components.

[0023] In the application, double-layer welding seams are used to share the shear force, wherein the outer periphery of the positioning boss 3.1 is welded with the through hole of the outer plate 1; the inner layer plate 4.1 is welded with the outer periphery of the positioning boss 3.1.

[0024] In the application, the diameter of the through hole of the outer plate 1 is 0.3-0.8mm larger than the outer diameter of the positioning boss 3.1.

[0025] The installation steps of the application are as follows: 1. The hinged cylinder 4.3 is welded and fixed with the axial positioning boss 4.2, the axial positioning boss 4.2 is connected with the inner layer plate 4.1 through bolts, to form the split cylinder 4; 2. The positioning boss 3.1 is welded with the sleeve 3.2 to form a shearing sleeve 3, which is sleeved on the shaft split cylinder 4; 3. The frame fixing plate 2 and the outer plate 1 are sleeved on the shearing sleeve 3, the outer plate 1 is pushed to be close to the frame fixing plate 2, and the inner plate 4.1, the positioning boss 3.1, the frame fixing plate 2 and the outer plate 1 are fixed through bolts, and the welding ring seam is applied along the perforation of the positioning boss 3.1 and the outer plate 1; 4. The inner plate 4.1 is welded with the outer periphery of the positioning boss 3.1.

[0026] 5. One end of the hydraulic cylinder is hinged to the hinge cylinder 4.3, and the other end is connected to the hopper hinge point.

[0027] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can understand the transformation or replacement within the technical range disclosed by the present application, which should be covered in the inclusive scope of the present application.

Claims

1. An axial locking type securing structure of a mine truck hopper lifting hydraulic cylinder, characterized by, The utility model relates to a shear resistant sleeve and split cylinder for fixing the frame of a vehicle, comprising an outer plate, a frame fixing plate, a shear resistant sleeve and a split cylinder, the outer plate and the frame fixing plate are provided with a through hole in the middle for the shear resistant sleeve to pass through, the split cylinder is nested with the shear resistant sleeve on the outside, the shear resistant sleeve and the frame fixing plate are pressed tightly by the split cylinder on the inside, and the frame fixing plate is pressed tightly on the outside by the outer plate, and the outer plate, the frame fixing plate, the shear resistant sleeve and the split cylinder are connected by fasteners.

2. The axial locking fixture for a mining truck hopper lift hydraulic cylinder as claimed in claim 1, wherein, The shear resistant sleeve comprises a positioning boss and a sleeve fixed with the positioning boss, the split cylinder comprises an inner layer plate, an axial positioning boss fixed with the inner layer plate and a hinged cylinder fixed with the outer end of the axial positioning boss, and the hinged cylinder is used for connecting the end of a hydraulic cylinder piston rod.

3. The axial locking fixture for a mining truck hopper lift hydraulic cylinder as claimed in claim 2, wherein, The axial positioning boss is arranged in the middle of one side of the inner layer plate and is fixed by bolt connection with the inner layer plate.

4. The axial locking fixture for a mining truck hopper lift hydraulic cylinder as claimed in claim 2, wherein, The outer contour size of the positioning boss is larger than the diameter of the sleeve, a stepped end face is formed so that the positioning boss abuts against the inner side of the inner layer plate, and the outer plate is pressed tightly on the frame fixing plate.

5. The axial locking fixture for a mining truck hopper lift hydraulic cylinder as claimed in claim 2, wherein, The hinged cylinder is welded integrally with the axial positioning boss, and the positioning boss is welded integrally with the sleeve.

6. The axial locking fixture for a mining truck hopper lift hydraulic cylinder of claim 2, wherein, The thickness of the inner layer plate is smaller than the thickness of the outer plate.

7. The axial locking fixture for a mining truck hopper lift hydraulic cylinder as claimed in claim 2, wherein, The outer periphery of the positioning boss is welded at the through hole of the outer layer plate, and the inner layer plate is welded with the outer periphery of the positioning boss.

8. The axial locking fixture for a mining truck hopper lift hydraulic cylinder as claimed in claim 2, wherein, The diameter of the through hole of the outer plate is 0.3-0.8mm larger than the outer diameter of the positioning boss.

9. The axial locking fixture for a mining truck hopper lift hydraulic cylinder of claim 1, wherein, The fastener is a bolt.

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