CN218481017U

CN218481017U - Small-size screw pitch measuring device

Info

Publication number: CN218481017U
Application number: CN202222499410.8U
Authority: CN
Inventors: 唐琳; 徐进; 胡黎峰; 施仕立; 张健; 席悦; 林杰; 孙玲丽
Original assignee: Ningbo Mingjiang Shipyard
Current assignee: Ningbo Mingjiang Shipyard
Priority date: 2022-09-21
Filing date: 2022-09-21
Publication date: 2023-02-14
Anticipated expiration: 2032-09-21

Abstract

The utility model discloses a small-size screw pitch measuring device belongs to screw technical field. The utility model provides a small-size screw pitch measuring device, includes rocking arm and perpendicular chi, the one end of rocking arm is provided with the calibrated scale, the other end of rocking arm is provided with the handle, be provided with the removal measurement structure on the perpendicular chi, the scale mark of a week 360 is carved with at the top of calibrated scale, the central authorities of calibrated scale run through there is the center pin. The utility model discloses a device can realize the measurement to small-size screw pitch, makes the measurement of small-size screw pitch more accurate, uses through the cooperation between accomodating hole and the connecting piece, can accomplish the function of accomodating to erecting the chi, reduces the shared space of this measuring device, is convenient for to this measuring device's accomodation and transportation, has improved this pitch measuring device's flexibility, through setting up the lag on erecting the chi, effectively avoids erecting the bottom of chi and causes the mar for the screw blade when measuring the screw.

Description

Small-size screw pitch measuring device

Technical Field

The utility model relates to a screw technical field especially relates to a small-size screw pitch measuring device.

Background

The propeller is a device which rotates in the air or water by means of blades and converts the rotating power of an engine into propulsive force, and can be a propeller with two or more blades connected with a hub, wherein the backward surface of each blade is a spiral surface or a surface similar to the spiral surface. The propellers are divided into a plurality of types and are widely applied, such as propellers of aircrafts and ships. Because of casting errors, the pitch of a blank of the newly manufactured propeller often has certain errors with the requirements of a drawing, and therefore, the pitch measurement must be carried out to check whether the propeller is qualified or not. Screw pitch measurement generally takes the pitch measuring device with the specification among the prior art, and is lower to the measurement precision of small-size screw pitch, and current screw pitch measuring device itself does not possess the function of accomodating the dipperstick, is not convenient for after measuring the pitch to measuring device accomodate and transport, and the flexibility is relatively poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects of the prior art and providing a small propeller pitch measuring device.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a small-size screw pitch measuring device, includes rocking arm and perpendicular chi, the one end of rocking arm is provided with the calibrated scale, the other end of rocking arm is provided with the handle, be provided with the removal measurement structure on the perpendicular chi.

Preferably, the top of the dial is marked with a scale mark with a circle of 360 degrees, a central shaft penetrates through the center of the dial, the central shaft is rotatably connected with the dial, and the lower part of the central shaft is in threaded connection with a first fixing piece; the center of the central shaft is a cylindrical through hole, and the central shaft is arranged on the propeller and the platform, so that the center line of the measuring instrument is coincident with the center line of the propeller hub.

Preferably, one end of the rotating arm, which is far away from the handle, is fixedly connected with one side of the upper part of the central shaft, and the rotating arm is positioned above the dial; after the rotating arm rotates around the central shaft, the rotating angle of the rotating arm on the central shaft can be visually read through the scale marks on the central shaft.

Preferably, the bottom of the vertical ruler is connected with a protective sleeve, the protective sleeve is a rubber component, and the vertical ruler is provided with a fixing hole; through set up the lag on erecting the chi, effectively avoid erecting the bottom of chi and cause the mar for the screw blade when measuring the screw.

Preferably, the mobile measurement structure comprises a sliding seat and a connecting piece, the connecting piece is connected to the rear side of the sliding seat, the sliding seat is provided with a vertical rectangular through hole from top to bottom, the sliding seat is provided with a transverse rectangular through hole from left to right, the front side of the sliding seat is provided with a first observation window and a second observation window, and the sliding seat is in threaded connection with a second fixing piece; the sliding seat can slide left and right on the rotating arm, and the vertical ruler can slide up and down on the sliding seat.

Preferably, the first observation window is arranged above the second observation window, the first observation window is communicated with the vertical rectangular through hole, and the second observation window is communicated with the horizontal rectangular through hole; and reading scale data on the rotating arm and the vertical ruler through the first observation window and the second observation window so as to measure the screw pitch of the propeller.

Preferably, the connecting piece is provided with a containing hole from left to right, the connecting piece is provided with a cavity, a fixing rod penetrates through the cavity, the cavity is connected with the fixing rod in a clearance fit manner, the lower part of the fixing rod is connected with a connecting piece, a spring penetrates through the outer wall of the fixing rod, the fixing rod is matched with the spring, the connecting piece and the spring are both positioned in the cavity, the top of the fixing rod penetrates through the cavity and is positioned at the top of the connecting piece, and the bottom of the fixing rod penetrates through the cavity and is positioned in the containing hole; when the fixing hole on the vertical ruler slides to the position corresponding to the fixing rod in the accommodating hole, the lower part of the fixing rod enters the fixing hole, and the fixing work of the vertical ruler is completed.

Preferably, the rotating arm penetrates through the transverse rectangular through hole and is connected with the transverse rectangular through hole in a sliding fit manner, and the vertical ruler penetrates through the vertical rectangular through hole and is connected with the vertical rectangular through hole in a sliding fit manner; the vertical ruler can move on the rotating arm in the radial direction along the blade surface of the propeller, and when the vertical ruler moves to a certain position, a certain radius on the blade surface is shown, and the vertical ruler can also move up and down.

Preferably, the vertical ruler is matched with the connecting piece, the vertical ruler penetrates through the accommodating hole and is connected with the accommodating hole in a sliding fit manner, and the fixing rod is matched with the fixing hole; after the measurement is finished, the vertical ruler is taken out from the inside of the vertical rectangular through hole, then the vertical ruler is pushed into the connecting piece through the accommodating hole, the accommodating function of the vertical ruler can be completed, the occupied space of the measuring device is reduced, and the measuring device is convenient to accommodate and transport.

Preferably, the outer walls of the rotating arm and the vertical ruler are provided with scale marks for indicating distance; the scales of the rotating arm and the vertical ruler are in mm units, the maximum scale range on the rotating arm is 1000mm, and the maximum scale range on the vertical ruler is 600mm.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses a device can realize the measurement to small-size screw pitch, makes the measurement of small-size screw pitch more accurate, uses through the cooperation of accomodating between hole and the connecting piece, can accomplish the function of accomodating to erecting the chi, reduces the shared space of this measuring device, is convenient for to this measuring device's accomodating and transportation, has improved this pitch measuring device's flexibility, through setting up the lag on erecting the chi, effectively avoids the bottom of erecting the chi to cause the mar for the screw blade when measuring the screw.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic diagram of the overall structure of the present application.

Fig. 2 is a rear view of the present invention.

Fig. 3 is a schematic structural view of the novel vertical ruler after being stored.

Fig. 4 is an exploded view of the present invention.

Fig. 5 is a cross-sectional view of the present novel connector.

Fig. 6 is an exploded view of the present invention using the novel connector.

The reference numerals in the drawings denote: 1. a dial scale; 2. a central shaft; 3. a first fixing member; 4. a rotating arm; 5. a handle; 6. a vertical ruler; 7. moving the measurement structure; 8. a protective sleeve; 9. a fixing hole; 10. a sliding seat; 11. a connecting member; 12. a receiving hole; 13. a vertical rectangular through hole; 14. a first observation window; 15. a transverse rectangular through hole; 16. a second observation window; 17. a second fixing member; 18. fixing the rod; 19. connecting sheets; 20. a spring; 21. a cavity.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-6, in an embodiment of the present invention, a small propeller pitch measuring device includes a rotating arm 4 and a vertical ruler 6, wherein a dial 1 is disposed at one end of the rotating arm 4, a handle 5 is disposed at the other end of the rotating arm 4, and a movement measuring structure 7 is disposed on the vertical ruler 6.

Referring to fig. 1-2, the top of the dial 1 is marked with a circle of scale marks of 360 degrees, a central shaft 2 penetrates through the center of the dial 1, the central shaft 2 is rotatably connected with the dial 1, and the lower part of the central shaft 2 is in threaded connection with a first fixing piece 3; the center of center shaft 2 is cylindrical through-hole, and center shaft 2 is installed on screw and platform, guarantees that the central line of measuring apparatu and the coincidence of propeller hub central line.

Referring to fig. 1-2, one end of the rotating arm 4 far away from the handle 5 is fixedly connected with one side of the upper part of the central shaft 2, and the rotating arm 4 is positioned above the dial 1; after the rotating arm 4 rotates around the central shaft 2, the angle a of the rotating arm 4 rotating on the central shaft 2 can be visually read through the scale marks on the central shaft 2.

Referring to fig. 1-2, a protecting sleeve 8 is connected to the bottom of the vertical ruler 6, the protecting sleeve 8 is a rubber component, and a fixing hole 9 is formed in the vertical ruler 6; through set up lag 8 on erecting chi 6, effectively avoid erecting the bottom of chi 6 and cause the mar for the screw blade when measuring the screw.

Referring to fig. 4, the mobile measuring structure 7 includes a sliding seat 10 and a connecting member 11, the connecting member 11 is connected to the rear side of the sliding seat 10, the sliding seat 10 is provided with a vertical rectangular through hole 13 from top to bottom, the sliding seat 10 is provided with a horizontal rectangular through hole 15 from left to right, the front side of the sliding seat 10 is provided with a first observation window 14 and a second observation window 16, and the sliding seat 10 is in threaded connection with a second fixing member 17; the sliding seat 10 can slide left and right on the rotating arm 4, and the vertical ruler 6 can slide up and down on the sliding seat 10.

Referring to fig. 4, the first observation window 14 is arranged above the second observation window 16, the first observation window 14 is communicated with the vertical rectangular through hole 13, and the second observation window 16 is communicated with the horizontal rectangular through hole 15; the scale data on the rotor arm 4 and the vertical ruler 6 are read through the first observation window 14 and the second observation window 16 so as to measure the pitch of the propeller.

With reference to fig. 5-6, the connecting member 11 is provided with a receiving hole 12 from left to right, the connecting member 11 is provided with a cavity 21, the fixing rod 18 penetrates through the cavity 21, the cavity 21 is connected with the fixing rod 18 in a clearance fit manner, the lower part of the fixing rod 18 is connected with a connecting piece 19, a spring 20 penetrates through the outer wall of the fixing rod 18, the fixing rod 18 is adapted to the spring 20, the connecting piece 19 and the spring 20 are both positioned inside the cavity 21, the top of the fixing rod 18 penetrates through the cavity 21 and is positioned at the top of the connecting member 11, and the bottom of the fixing rod 18 penetrates through the cavity 21 and is positioned inside the receiving hole 12; when the fixing hole 9 of the vertical ruler 6 slides to the position corresponding to the fixing rod 18 in the accommodating hole 12, the lower part of the fixing rod 18 enters the fixing hole 9, and the fixing work of the vertical ruler 6 is completed.

Referring to fig. 1-3, the rotating arm 4 penetrates through the transverse rectangular through hole 15 and is connected with the transverse rectangular through hole 15 in a sliding fit manner, and the vertical ruler 6 penetrates through the vertical rectangular through hole 13 and is connected with the vertical rectangular through hole 13 in a sliding fit manner; the vertical ruler 6 can move on the rotating arm 4 along the blade surface of the propeller in the radial direction, and when the vertical ruler is moved to a certain position, a certain radius on the blade surface is shown, and the vertical ruler 4 can also move up and down.

Referring to fig. 3-4, the vertical ruler 6 is matched with the connecting piece 11, the vertical ruler 6 penetrates through the accommodating hole 12 and is connected with the accommodating hole 12 in a sliding fit manner, and the fixing rod 18 is matched with the fixing hole 9; after the measurement, the vertical ruler 6 is taken out from the inside of the vertical rectangular through hole 13, then the vertical ruler 6 is pushed into the connecting piece 11 through the containing hole 12, the containing function of the vertical ruler 6 can be completed, the occupied space of the measuring device is reduced, and the measuring device is convenient to contain and transport.

Referring to fig. 1-4, scale marks for indicating distances are arranged on the outer walls of the rotating arm 4 and the vertical ruler 6; the scales of the rotating arm 4 and the vertical ruler 6 are in mm units, the maximum scale range of the scales on the rotating arm 4 is 1000mm, and the maximum scale range of the scales on the vertical ruler 6 is 600mm.

The utility model discloses an operating principle is in the use, the user is through keeping flat on the platform with the big terminal surface of screw down, install pitch measuring device on the screw through center pin 2, guarantee measuring device's central line and propeller hub central line coincidence, then make rocking arm 4 rotate around center pin 2 through holding handle 5 and application of force, the angle that rocking arm 4 rotated on center pin 2 is read out through the scale mark on center pin 2, vertical ruler 6 can make radial movement along the blade surface on rocking arm 4, every moves to a certain radius on certain position promptly showing the blade surface, vertical ruler 6 itself can also reciprocate, rotate rocking arm 4, draw the pitch arc on the pressure surface of each blade, record turned angle, and record the reading that vertical ruler is in simultaneously, draw the height of screw shafting direction through calculating, rethread conversion can try to get to the local pitch on this position, make the measurement to small-size screw more accurate, take out vertical ruler 6 from the inside of vertical through-hole 13 after the measurement rectangle, then pass through taking in hole 12 with the connecting piece, can realize the measurement to the measurement of small-size screw pitch, can reduce and take in the lag and measure the space that this propeller 6 and avoid taking in the effective vertical ruler 8 of taking in the propeller.

Above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the design of the present invention, equivalent replacement or change should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a small-size screw pitch measuring device which characterized in that, includes rocking arm (4) and perpendicular chi (6), the one end of rocking arm (4) is provided with calibrated scale (1), the other end of rocking arm (4) is provided with handle (5), be provided with on perpendicular chi (6) and remove measurement structure (7).

2. A small propeller pitch measuring device according to claim 1, wherein the dial (1) is marked with a scale mark of 360 ° in a circle at the top, the center shaft (2) penetrates through the center of the dial (1), the center shaft (2) is rotatably connected with the dial (1), and the first fixing member (3) is screwed at the lower part of the center shaft (2).

3. A small propeller pitch measuring device according to claim 1 or 2, wherein the end of the pivoted arm (4) remote from the handle (5) is fixedly connected to one side of the upper part of the central shaft (2), the pivoted arm (4) being located above the dial (1).

4. A small propeller pitch measurement device according to claim 1, wherein a protective sleeve (8) is attached to the bottom of the vertical rod (6), the protective sleeve (8) is a rubber member, and the vertical rod (6) is provided with a fixing hole (9).

5. The small propeller pitch measuring device of claim 1, wherein the movable measuring structure (7) comprises a sliding seat (10) and a connecting piece (11), the connecting piece (11) is connected to the rear side of the sliding seat (10), the sliding seat (10) is provided with a vertical rectangular through hole (13) from top to bottom, the sliding seat (10) is provided with a transverse rectangular through hole (15) from left to right, the front side of the sliding seat (10) is provided with a first observation window (14) and a second observation window (16), and the sliding seat (10) is connected with a second fixing piece (17) through threads.

6. A compact propeller pitch measurement device according to claim 5, wherein the first observation window (14) is arranged above the second observation window (16), the first observation window (14) communicating with the vertical rectangular through hole (13), the second observation window (16) communicating with the transverse rectangular through hole (15).

7. The small propeller pitch measuring device according to claim 5, wherein the connecting member (11) is provided with a receiving hole (12) from left to right, the connecting member (11) is provided with a cavity (21), a fixing rod (18) penetrates through the cavity (21), the cavity (21) is connected with the fixing rod (18) in a clearance fit manner, the lower portion of the fixing rod (18) is connected with a connecting piece (19), a spring (20) penetrates through the outer wall of the fixing rod (18), the fixing rod (18) is matched with the spring (20), the connecting piece (19) and the spring (20) are both located inside the cavity (21), the top of the fixing rod (18) penetrates through the cavity (21) and is located at the top of the connecting member (11), and the bottom of the fixing rod (18) penetrates through the cavity (21) and is located inside the receiving hole (12).

8. A small propeller pitch measurement device according to claim 6 or 7, wherein the swivel arm (4) extends through the transverse rectangular through hole (15) and is connected with the transverse rectangular through hole (15) in a sliding fit manner, and the vertical ruler (6) extends through the vertical rectangular through hole (13) and is connected with the vertical rectangular through hole (13) in a sliding fit manner.

9. A miniature propeller pitch measuring device as claimed in claim 7, wherein said vertical rod (6) is adapted to the connecting member (11), said vertical rod (6) extends through the receiving hole (12) and is connected to the receiving hole (12) by a sliding fit, and said fixing rod (18) is adapted to the fixing hole (9).

10. A compact propeller pitch measurement device according to claim 1, characterised in that the outer walls of the jib (4) and the vertical ruler (6) are provided with graduated markings indicating distance.