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CN-121976988-A - Hydraulic cylinder protection device of dump truck

CN121976988ACN 121976988 ACN121976988 ACN 121976988ACN-121976988-A

Abstract

The invention relates to a dump truck protection device which comprises an air curtain protection assembly and an offset connector, wherein the air curtain protection assembly comprises an air curtain generation base and a flow guide top cover, the air curtain generation base is arranged at the top of a hydraulic cylinder body, the flow guide top cover is arranged at the top of an output end of the hydraulic cylinder, the air curtain generation base is communicated with a small air compressor through a hose, and the small air compressor is used for generating air flow to be inflated into the air curtain generation base. According to the invention, by arranging the small compressor, the air curtain generating base, the flow guide top cover and other parts, the annular air curtain upwards can be generated when the hydraulic cylinder works through the matching relation between the small air compressor and the air curtain generating base, the piston rod of the hydraulic cylinder is protected, in addition, the annular air curtain is turned under the action of the flow guide top cover to generate annular air flow downwards, and the annular air flow and the annular air curtain are mutually nested, so that double protection is realized.

Inventors

  • CHEN JUNRUN
  • GENG PING
  • CHEN YANQUN
  • CAO CHUNRU
  • DONG CHAOWEN
  • QUAN JING

Assignees

  • 湖北大运汽车有限公司

Dates

Publication Date
20260505
Application Date
20251206

Claims (10)

  1. 1. The dump truck protecting device is characterized by comprising an air curtain protecting component and an offset connector; The air curtain protection assembly comprises an air curtain generation base (3) and a flow guide top cover (4), wherein the air curtain generation base (3) is arranged at the top of a cylinder body of the hydraulic cylinder (1), the flow guide top cover (4) is arranged at the top of an output end of the hydraulic cylinder (1), the air curtain generation base (3) is mutually communicated with a small air compressor (2) through a hose, the small air compressor (2) is used for generating air flow to be inflated into the air curtain generation base (3), an upward air curtain is generated under the action of the air curtain generation base (3), and the flow guide top cover (4) is used for changing the flow direction of the upward air curtain, namely, the air curtain and the flow guide top cover (4) downwards flow after collision to form downward annular air flow; the flow guide top cover (4) is connected with the dumper carriage through an offset connector.
  2. 2. The dump truck protection device according to claim 1, wherein the air curtain generating base (3) comprises a base inner ring (32), the base inner ring (32) is arranged at the top of a cylinder body of the hydraulic cylinder (1), a base outer ring (31) is sleeved outside the base inner ring (32), an annular air flow-back flow hole (33) is arranged between the base outer ring (31) and the base inner ring (32), a plurality of connecting blocks (36) are arranged inside the annular air flow-back flow hole (33), and the connecting blocks (36) are distributed in annular equal intervals and are used for connecting the base outer ring (31) and the base inner ring (32).
  3. 3. The dump truck protection device according to claim 2, characterized in that a through hole (37) is arranged at the center of the upper surface of the base inner ring (32), and the output end of the hydraulic cylinder (1) penetrates through the through hole (37) and extends to the upper side of the base inner ring (32).
  4. 4. A dump truck protection device according to claim 3, characterized in that the base inner ring (32) is provided with an annular air cavity (34) along the outer edge of the through hole (37), the opening of the annular air cavity (34) faces upwards and is in a non-communicated state with the through hole (37), the circumferential surface of the base outer ring (31) is provided with a communication joint (8), the communication joint (8) penetrates through the connecting block (36) and is communicated with the annular air cavity (34), the communication joint (8) is communicated with the small air compressor (2) through a hose, and the opening of the annular air cavity (34) is used for ejecting annular air flow.
  5. 5. The dump truck protection device according to claim 4, wherein a cylindrical guide lip (35) and a plugging ring group (7) are arranged on the upper surface of the base inner ring (32), the cylindrical guide lip (35) is sleeved outside the opening of the annular air cavity (34), the inner diameter of the top of the cylindrical guide lip (35) is larger than the inner diameter of the bottom of the cylindrical guide lip, and the plugging ring group (7) is arranged at the opening of the annular air cavity (34).
  6. 6. The dump truck protection device according to claim 5, characterized in that the plugging ring group (7) comprises an inner plugging ring (71), an outer plugging ring (72) is sleeved outside the inner plugging ring (71), the inner plugging ring (71) and the outer plugging ring (72) are in contact with each other, and the cross section of the plugging ring group (7) is herringbone.
  7. 7. The dump truck protection device according to claim 4, wherein the diversion top cover (4) comprises a cover plate (41), the cover plate (41) is arranged at the output end of the hydraulic cylinder (1), an annular diversion trench (44) is arranged on the lower surface, one side, away from the air curtain generating base (3), of the annular diversion trench (44) is a semicircular trench surface, and the semicircular trench surface is tangential to annular air flow sprayed out of the annular air cavity (34) and is positioned right above the annular air flow return hole (33).
  8. 8. The dump truck protection device according to claim 7, characterized in that a vertical joint (42) is provided at the top of the cover plate (41), a spherical hole (43) is provided in the vertical joint (42), both ends of the spherical hole (43) are open, the offset connection joint comprises a spherical rotation shaft (5), and the spherical rotation shaft (5) is provided in the spherical hole (43) and extends to the outside of the spherical hole (43).
  9. 9. The dump truck protection device according to claim 8, wherein the spherical rotating shaft (5) comprises a spherical block body (51), the spherical block body (51) is arranged in the spherical hole (43) and can rotate, two connecting shafts (52) are arranged on the circumferential surface of the spherical block body (51), the two connecting shafts (52) are arranged on a straight line and are symmetrically distributed, and a mounting bracket (6) is sleeved outside the spherical rotating shaft (5).
  10. 10. The dump truck protection device according to claim 9, wherein the mounting bracket (6) is an n-shaped mounting bracket, the spherical rotating shaft (5) is arranged between two side walls inside the mounting bracket (6) and is connected with the mounting bracket (6) through a connecting shaft (52) and a bearing, and the mounting bracket (6) is used for being connected with a dump truck carriage.

Description

Hydraulic cylinder protection device of dump truck Technical Field The invention relates to the technical field of hydraulic cylinder protection equipment, in particular to a dumper hydraulic cylinder protection device. Background The dumper (also called as a dump truck) is a special transport vehicle which realizes automatic lifting and inclined unloading of a container through hydraulic or mechanical driving, is used for short-distance transportation and rapid unloading of bulk materials (such as sand, coal, construction waste, ore and the like) and is widely applied to scenes such as mines, construction sites, foundation projects, sanitation and the like. The utility model provides a self-discharging vehicle's practical environment is comparatively complicated, when the building site is unloaded, the piston rod needs to stretch out, the foreign matter such as dust in the environment, grit, muddy water can adhere on the surface of piston rod, lead to sealing member wearing and tearing even piston rod fish tail easily, can lead to whole hydraulic rod impaired after the inside of foreign matter entering hydraulic rod behind the leakproofness wearing and tearing, and the hydraulic rod cost of large-scale self-discharging vehicle is high, direct replacement cost is higher, common protection mode is through setting up multiple seal structure at the piston rod tip, thereby block dust entering wherein, this kind of passive protection's mode exposes in the complex environment for a long time, the condition that the effect weakens even inefficacy appears easily, so this provides a self-discharging vehicle hydraulic cylinder protector to solve above-mentioned problem. Disclosure of Invention Based on the expression, the invention provides a dumper hydraulic cylinder protection device, which aims to solve the problem that passive protection is easy to have weakening effect and even failure. The invention solves the technical problems as follows, the dump truck protection device comprises an air curtain protection component and an offset connector; The air curtain protection assembly comprises an air curtain generation base and a flow guide top cover, the air curtain generation base is arranged at the top of a hydraulic cylinder body, the flow guide top cover is arranged at the top of an output end of the hydraulic cylinder, the air curtain generation base is communicated with a small air compressor through a hose, the small air compressor is used for generating air flow to be inflated into the air curtain generation base, and an upward air curtain is generated under the action of the air curtain generation base, and the flow guide top cover is used for changing the flow direction of the upward air curtain, namely, the air curtain and the flow guide top cover downwards flow after collision, so that downward annular air flow is formed; The flow guide top cover is connected with the carriage of the dump truck through the offset connector. On the basis of the technical scheme, the invention can be improved as follows. Further, the air curtain generation base comprises a base inner ring, the base inner ring is arranged at the top of the hydraulic cylinder body, a base outer ring is sleeved outside the base inner ring, an annular air flow back flow hole is arranged between the base outer ring and the base inner ring, a plurality of connecting blocks are arranged inside the annular air flow back flow hole, and the connecting blocks are distributed at equal intervals in an annular mode and are used for being connected with the base outer ring and the base inner ring. Further, a through hole is formed in the circle center of the upper surface of the base inner ring, and the output end of the hydraulic oil cylinder penetrates through the through hole and extends to the upper side of the base inner ring. Further, the base inner ring is provided with an annular air cavity along the outer edge of the through hole, an opening of the annular air cavity faces upwards and is in a non-communicated state with the through hole, a communication joint is arranged on the circumferential surface of the base outer ring, the communication joint penetrates through the connecting block and is communicated with the annular air cavity, the communication joint is communicated with the small air compressor through a hose, and an opening of the annular air cavity is used for spraying annular air flow. Further, the upper surface of base inner circle is provided with tube-shape water conservancy diversion lip and shutoff ring group, tube-shape water conservancy diversion lip cover is established annular air cavity open-ended outside, and the internal diameter at tube-shape water conservancy diversion lip top is greater than the internal diameter of its bottom, shutoff ring group set up in the opening part of annular air cavity. Further, the plugging ring group comprises an inner plugging ring, an outer plugging ring is sleeved outside the inner plugg