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CN-121977440-A - Grating ruler protection structure and equipment with same

CN121977440ACN 121977440 ACN121977440 ACN 121977440ACN-121977440-A

Abstract

The application discloses a grating ruler protection structure and equipment with the same. The grating ruler protection structure comprises a shell component and an air injection component. The shell part is provided with a containing cavity, the containing cavity is internally provided with a ruler body and a reading head, the ruler body extends along the length direction of the shell part, the reading head can reciprocate along the length direction of the shell part and is positioned above the ruler body, the air injection assembly comprises at least one of a first air injection part and a second air injection part, the first air injection part is arranged on the shell part and extends along the length direction of the shell part, the first air injection part is communicated with the containing cavity and is used for being oriented to the outside Zhou Penqi of the ruler body, and the second air injection part is movably arranged in the containing cavity and is connected with the reading head so as to be at least used for injecting air towards the ruler body. The application can solve the problems that the grating ruler protection structure in the prior art can not block dust accumulation in the ruler body reading area or the non-reading area and influence the measurement accuracy of the grating ruler.

Inventors

  • LUO MINHAO
  • ZHOU CHUNQIANG
  • HUANG GUOLIN
  • YU JUNCHENG
  • ZHANG YINGLIN
  • HUANG FENGQIANG

Assignees

  • 中国机械总院集团海西(福建)分院有限公司

Dates

Publication Date
20260505
Application Date
20251225

Claims (10)

  1. 1. A grating ruler protection structure, characterized by comprising: A housing part (10), wherein the housing part (10) is provided with a containing cavity (101), a ruler body (20) and a reading head (30) are arranged in the containing cavity (101), the ruler body (20) extends along the length direction of the housing part (10), and the reading head (30) can reciprocate along the length direction of the housing part (10) and is positioned above the ruler body (20); Jet assembly (40), jet assembly (40) include at least one of first jet component (41) and second jet component (42), first jet component (41) set up in on casing part (10) and along the length direction of casing part (10), just first jet component (41) with holding chamber (101) intercommunication is in order to be used for orientation the outside Zhou Penqi of blade (20), second jet component (42) movably set up in holding chamber (101) and with read head (30) are connected, in order to be used for at least orientation blade (20) jet.
  2. 2. A grating ruler protection structure according to claim 1, characterized in that the first air jet means (41) comprises: A first air-ejecting structure (43), the first air-ejecting structure (43) being located at a first side (102) and/or a second side (103) of the housing member (10) in a width direction thereof, the first air-ejecting structure (43) extending in a length direction of the housing member (10) and communicating with the accommodating chamber (101) for being directed toward an outside Zhou Penqi of the blade (20), and/or, And a second air injection structure (44), wherein the second air injection structure (44) is positioned on a third side (104) of the shell component (10) along the height direction of the second air injection structure, and the second air injection structure (44) extends along the length direction of the shell component (10) and is communicated with the accommodating cavity (101) for injecting air towards the periphery of the ruler body (20).
  3. 3. The grating scale protective structure according to claim 2, wherein the first air injection structure (43) comprises a first air inlet channel (431) and a plurality of first air injection ports (432), the first air inlet channel (431) extends along the length direction of the housing member (10), and the plurality of first air injection ports (432) are arranged at intervals along the length direction of the housing member (10) and are respectively communicated with the first air inlet channel (431) and the accommodating cavity (101).
  4. 4.A grating scale protective structure according to claim 3, characterized in that the first air jet (432) has a first air inlet end (4321) communicating with the first air inlet channel (431) and a first air outlet end (4322) communicating with the accommodation chamber (101), the distance between the central axis of the first air jet (432) and the bottom of the housing member (10) gradually increasing in the direction from the first air inlet end (4321) to the first air outlet end (4322), and/or, The housing part (10) is provided with an opening (105) communicated with the accommodating cavity (101), the grating ruler protection structure further comprises elastic sealing pieces (50), the elastic sealing pieces (50) are arranged on two sides of the opening (105) along the width direction of the housing part (10), a preset gap (51) is arranged between the two elastic sealing pieces (50), the first air spraying opening (432) is arranged obliquely to the bottom of the housing part (10) and points to the preset gap (51), and/or, The first gas nozzles (432) have a width of 0.3mm to 0.5mm along the length of the housing part (10).
  5. 5. The grating scale protective structure according to claim 2, wherein the second air-jetting structure (44) includes a second air-intake passage (441) and a plurality of second air-jetting ports (442), the second air-intake passage (441) extends along a length direction of the housing member (10), the plurality of second air-jetting ports (442) are disposed at intervals along the length direction of the housing member (10) and are respectively communicated with the second air-intake passage (441) and the accommodating chamber (101), and each of the second air-jetting ports (442) is directed toward the blade (20).
  6. 6. The grating ruler protection structure according to claim 1, wherein the second air-jet member (42) comprises: -a connection piece (45), said connection piece (45) being movably arranged to said housing part (10) and being connected to said reading head (30); The first air injection unit (46), the two sides of the connecting piece (45) along the length direction of the shell component (10) are provided with the first air injection unit (46), the first air injection unit (46) is provided with a first air injection hole (461), and the first air injection hole (461) is positioned above the ruler body (20); And the second air injection unit (47), the connecting piece (45) is provided with the second air injection unit (47) along two sides of the width direction of the shell component (10), the second air injection unit (47) is provided with a second air injection hole (471), and the second air injection hole (471) is positioned above the ruler body (20).
  7. 7. The grating scale protective structure according to claim 6, wherein the central axis of the first air ejection hole (461) is perpendicular to the blade (20), and/or, The second air injection hole (471) has a second air inlet end (4711) far away from the accommodating cavity (101) and a second air outlet end (4712) communicated with the accommodating cavity (101), and the distance from the central axis of the second air injection hole (471) to the ruler body (20) gradually decreases along the direction from the second air inlet end (4711) to the second air outlet end (4712), and/or, The second air injection unit (47) is located at one side, far away from the ruler body (20), of the first air injection unit (46), an avoidance space (48) is formed by surrounding the first air injection unit (46) and the connecting piece (45), and the second air injection hole (471) is located above the avoidance space (48).
  8. 8. The grating scale protective structure according to claim 6, wherein the connecting member (45) is provided with a main air intake passage (451), the first air injection unit (46) is provided with a third air intake passage (462), the second air injection unit (47) is provided with a fourth air intake passage (472), the third air intake passage (462) communicates with the main air intake passage (451) and the first air injection hole (461), respectively, the fourth air intake passage (472) communicates with the main air intake passage (451) and the second air injection hole (471), respectively, and/or, The grating ruler protection structure further comprises elastic sealing elements (50), the elastic sealing elements (50) are arranged on two sides of the opening (105) along the width direction of the shell part (10), and at least part of the connecting elements (45) extend out of the opening (105) and are attached to the two elastic sealing elements (50).
  9. 9. The grating scale protective structure according to any one of claims 1-8, further comprising an air supply assembly (60), the first air injection component (41) and the second air injection component (42) each being in communication with the air supply assembly (60), the air supply assembly (60) comprising: A main air pipe (61), wherein an air source (62), an air filter (63) and a main regulating piece (64) are arranged on the main air pipe (61), and the air filter (63) is positioned between the air source (62) and the main regulating piece (64); A first bronchus (65), wherein the first bronchus (65) is connected between the main bronchus (61) and the first air injection component (41), and a first adjusting piece (66) is arranged on the first bronchus (65); And a second bronchus (67), wherein the second bronchus (67) is connected between the main bronchus (61) and the second air injection component (42), and a second adjusting piece (68) is arranged on the second bronchus (67).
  10. 10. An apparatus having a grating scale guard structure, the apparatus comprising a grating scale guard structure as claimed in any one of claims 1 to 9.

Description

Grating ruler protection structure and equipment with same Technical Field The application relates to the technical field of grating ruler protection, in particular to a grating ruler protection structure and equipment with the same. Background In the related art, the grating ruler mainly comprises a ruler body with a scale grating and a reading head for reading, and the ruler body and the reading head are matched to collect position signals. As a high-precision position measuring instrument, the measuring precision of the grating ruler is extremely easily affected by external dust and the like. However, the existing grating ruler protection structure cannot prevent dust from accumulating in the non-reading area of the ruler body, and the accumulated dust still can be brought into a measurement gap when the reading head moves to pass, so that measurement accuracy is affected. Disclosure of Invention The application mainly aims to provide a grating ruler protection structure and equipment with the same, so as to solve the problem that the grating ruler protection structure in the prior art cannot block dust accumulation in a ruler body reading area or a non-reading area and influence the measurement accuracy of a grating ruler. According to one aspect of the present application, there is provided a grating scale protective structure comprising: The shell part is provided with a containing cavity, a ruler body and a reading head are arranged in the containing cavity, the ruler body extends along the length direction of the shell part, and the reading head can reciprocate along the length direction of the shell part and is positioned above the ruler body; The jet assembly comprises at least one of a first jet part and a second jet part, wherein the first jet part is arranged on the shell part and extends along the length direction of the shell part, the first jet part is communicated with the accommodating cavity to be used for being directed towards the outside Zhou Penqi of the ruler body, and the second jet part is movably arranged in the accommodating cavity and connected with the reading head to be at least used for being directed towards the ruler body for jet. Further, the first air injection part includes: A first air-ejecting structure located at a first side and/or a second side of the housing member in a width direction thereof, the first air-ejecting structure extending in a length direction of the housing member and communicating with the accommodating chamber for being directed toward an outside Zhou Penqi of the blade, and/or, The second air injection structure is positioned on a third side of the shell part along the height direction of the shell part, extends along the length direction of the shell part and is communicated with the accommodating cavity, and is used for injecting air towards the periphery of the ruler body. Further, the first air injection structure comprises a first air inlet channel and a plurality of first air injection ports, the first air inlet channel extends along the length direction of the shell component, and the plurality of first air injection ports are arranged at intervals along the length direction of the shell component and are respectively communicated with the first air inlet channel and the accommodating cavity. Further, the first air jet has a first air inlet end communicated with the first air inlet channel and a first air outlet end communicated with the accommodating cavity, the distance between the central axis of the first air jet and the bottom of the shell component is gradually increased along the direction from the first air inlet end to the first air outlet end, and/or, The housing part is provided with an opening communicated with the accommodating cavity, the grating ruler protection structure further comprises elastic sealing elements, the elastic sealing elements are arranged on two sides of the opening along the width direction of the housing part, a preset gap is arranged between the two elastic sealing elements, the first air jet is inclined to the bottom of the housing part and points to the preset gap, and/or, The first gas jet has a width of 0.3mm to 0.5mm along the length of the housing part. Further, the second air injection structure comprises a second air inlet channel and a plurality of second air injection ports, the second air inlet channel extends along the length direction of the shell component, the second air injection ports are arranged at intervals along the length direction of the shell component and are respectively communicated with the second air inlet channel and the accommodating cavity, and each second air injection port is pointed to the ruler body. Further, the second air injection part includes: A connector movably disposed on the housing member and connected to the read head; The connecting piece is provided with first air injection units along two sides of the length direction of the shell part, the first air inje