Marking device for accelerator dial

Abstract

The utility model provides a marking device for an accelerator dial, which is provided with an upper plier handle, a lower plier handle, a roller, a spring assembly, a jaw structure and a jaw, the jaw structure and the jaw are mounted at the end of the lower plier handle, and an opening for clamping the accelerator dial is formed between the jaw and the lower plier handle. The spring assembly can enable the jaw and the clamping end of the lower plier handle to be closed or opened during compression and free stretching, the upper plier handle can drive the rolling wheel to move when rotating, then the end of the bent structure abutting against the jaw structure is lifted up, the jaw structure rotates in the direction of pressing the accelerator dial, the jaw forms a scribed line at the position corresponding to the accelerator dial, and therefore the accelerator dial is fixed. And the scribed lines are uniform in depth and accurate in position, so that the consistency and reliability of marking are ensured, the hidden danger of product damage or scrapping easily caused by instantaneous impact load in the marking process of a traditional dial is avoided, and the production cost is saved.

Description

Technical Field

[0001] This utility model belongs to the field of aviation repair technology, specifically relating to a marking device for a throttle dial. Background Technology

[0002] The fuel pump regulator is a core component of the aircraft engine fuel system. The position of its throttle control lever directly determines the various operating states of the engine. At this time, the angle of the throttle dial is particularly important, and the accuracy of its markings directly affects the performance and indicators of the engine in various states.

[0003] During the repair of the fuel pump regulator, the throttle dial needs to be replaced and the throttle marks re-marked. The traditional marking method involves striking a chisel with a hammer to create grooves on the throttle dial. This method is difficult to operate when the product is already assembled, the marking accuracy is not high, the depth is inconsistent, and it is impossible to ensure that the markings are consistent with the direction of the throttle control lever pointer. At the same time, the hammering process can easily damage other parts. Utility Model Content

[0004] The purpose of this invention is to solve the problems of poor accuracy and easy damage to other parts caused by the existing throttle dial marking method. It provides a marking device for the throttle dial. The marking device is designed by utilizing the structural characteristics of the throttle dial. It can stably clamp the dial and clamp it accurately and reliably.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0006] A marking device for a throttle dial includes a first clamp, a second clamp, a roller, a jaw structure, jaws, and a spring assembly.

[0007] The bottom of one end of the first clamp handle is rotatably connected to the top of the second clamp handle body, and the first clamp handle can rotate in the plane where the first clamp handle and the second clamp handle are located; a roller is installed at the top of one end of the first clamp handle, and the other end is used to apply external force;

[0008] The tiger's mouth structure includes a protrusion and a curved structure connected to the protrusion. The bottom of the protrusion is rotatably connected to the second clamp handle, and the concave part of the curved structure faces the second clamp handle, and the free end of the curved structure contacts the outer wall of the roller.

[0009] The second pliers handle has a clamping end, and the protrusion is arranged parallel to the clamping end; the jaws are fixed to the bottom surface of the protrusion for forming a scale line on the throttle dial, and the length direction of the jaws is along the length direction of the second pliers handle.

[0010] There is an opening gap between the lower end face of the jaws and the top of the clamping end of the second pliers handle, and the opening gap is used to clamp the throttle dial;

[0011] The spring assembly is installed between the first and second jaws and away from the jaws, and the spring assembly is capable of opening or closing the jaws and the clamping ends of the second jaw when freely extended or compressed.

[0012] Furthermore, the spring assembly includes a limiting screw, a spring seat, and a spring;

[0013] The screw of the limiting screw is fixedly installed on the first pliers handle body, and the head of the limiting screw is located in the inner hole of the spring seat; by adjusting the fixed position of the limiting screw on the shaft of the first pliers handle, the size of the opening gap between the lower end face of the jaws and the top of the clamping end of the second pliers handle can be adjusted.

[0014] The open end of the spring seat has a tapering end that gradually narrows along the axial direction of the spring seat, so that the limiting screw can move freely back and forth along the axial direction of the inner hole of the spring seat without coming out.

[0015] The spring is fitted onto the limiting screw and the outer wall of the spring seat, and both ends of the spring are limited between the first clamp handle and the stepped surface of the spring seat; the bottom of the spring seat can contact the upper wall surface of the second clamp handle.

[0016] Furthermore, the center of curvature of the free end of the curved structure on the tiger's mouth structure is opposite to the center of curvature of the concave part of the curved structure; the convex part of the free end of the curved structure contacts the outer wall of the roller.

[0017] Furthermore, the bottom of the protrusion of the tiger's mouth structure is provided with a slot along the length of the protrusion, and the jaws are interference-fitted into the slot.

[0018] Furthermore, the end of the jaws extends beyond the protrusion of the tiger's mouth structure, making it easy to observe whether the jaws are aligned with the marked position on the throttle dial.

[0019] Furthermore, the end of the jaws is a triangular inclined plane with the tip pointing downwards, and the triangular inclined plane is symmetrical with respect to the center line of the jaws.

[0020] Furthermore, the top of the second clamp handle body has two vertically upward-arranged first lugs, and the bottom of one end of the first clamp handle is located between the two first lugs and is connected to the top of the second clamp handle body by a cylindrical pin.

[0021] Furthermore, the first pliers handle includes a horizontally arranged first handle section and a first curved section smoothly connected to the first handle section;

[0022] The second clamp handle includes a horizontally arranged second handle section and a first inclined section, a horizontal section, and a second inclined section connected in sequence to the second handle section;

[0023] The spring assembly is vertically installed at the connection between the first handle section and the first curved section;

[0024] The first lug on the second clamp handle body is located at the connection between the first inclined section and the horizontal section;

[0025] The bottom of the protrusion on the tiger's mouth structure is rotatably mounted at the connection between the horizontal section and the second inclined section of the second clamp handle.

[0026] Furthermore, the bottom of the protrusion has two symmetrically arranged second lugs, and the connection between the horizontal section and the second inclined section of the second clamp handle has an upward protrusion perpendicular to the second inclined section;

[0027] The lug is located between the two second lugs and is rotatably connected by a positioning bolt and an M6 hexagonal thin nut.

[0028] Furthermore, the first clamp handle, the second clamp handle, the jaw structure, the rollers, and the jaws are all made of alloy steel.

[0029] The advantages of this utility model are:

[0030] 1. This utility model relates to a marking device for a throttle dial. It comprises an upper clamp handle, a lower clamp handle, a roller, a spring assembly, and a jaw structure and jaws installed at the end of the lower clamp handle. An opening for clamping the throttle dial is formed between the jaws and the lower clamp handle. The spring assembly provides the driving force for the upper clamp handle to rotate up and down. When the upper clamp handle rotates, it drives the roller to move, thereby lifting the curved end of the jaw structure and causing it to rotate in the direction of pressing the throttle dial. The jaws form marking lines at corresponding positions on the throttle dial. The marking lines are of uniform depth and accurate position, ensuring the consistency and reliability of the marking. This avoids the product damage or scrap risk caused by instantaneous impact loads during traditional dial marking processes, and saves production costs.

[0031] 2. This utility model tooling is simple to operate. During marking, simply adjust the position of the limit screw to achieve the marking of a large number of throttle dials. The marking efficiency is high. For throttle dials of different specifications and thicknesses, it is only necessary to adjust the size of the opening gap between the clamping end of the lower clamp handle and the jaw by adjusting the limit screw.

[0032] 3. The tooling structure of this utility model is simple and lightweight, with low manufacturing cost. It is not limited to a specific workplace and has strong versatility. Attached Figure Description

[0033] The above and / or other features and advantages of the present invention will become more readily understood from the following description with reference to the accompanying drawings, which are not drawn to scale and some features are enlarged or reduced to show details of specific parts.

[0034] Figure 1 This is a three-dimensional schematic diagram of the marking device for the throttle dial of this utility model;

[0035] Figure 2 This is a top view of the marking device for the throttle dial of this utility model;

[0036] Figure 3 This is a front view of the marking device of this utility model in its free state.

[0037] Figure 4 This is a front view of the marking device of this utility model under pressure.

[0038] In the diagram: 1-lower jaw, 2-upper jaw, 3-jaw structure, 301-protrusion, 302-bending structure, 30201-bending structure recess, 30202-bending structure free end, 4-roller, 5-jaw, 6-limiting screw, 7-spring seat, 701-step surface, 702-closed end, 8-positioning bolt, 9-short cylindrical pin, 10-cylindrical pin, 11-spring, 12-M6 hexagonal thin nut. Detailed Implementation

[0039] The present invention will now be described in detail with reference to the accompanying drawings and exemplary embodiments thereof. It should be noted that the following detailed description of the present invention is for illustrative purposes only and is not intended to limit the scope of the invention.

[0040] Reference Figure 1 and Figure 2This embodiment provides a marking device for a throttle dial, including a lower jaw 1, an upper jaw 2, a jaw structure 3, a roller 4, jaws 5, a limiting screw 6, a spring seat 7, a positioning bolt 8, a short cylindrical pin 9, a cylindrical pin 10, a spring 11, and an M6 hexagonal thin nut 12. The bottom of one end of the upper jaw 2 is tightly connected to the middle of the lower jaw 1 via the cylindrical pin 10, allowing the upper jaw 2 to rotate up and down around the cylindrical pin 10. The lower jaw 1 is rotatably connected to the middle of the jaw structure 3, with the recessed part of the jaw structure facing the lower jaw. The roller 4 is tightly connected to the top of one end of the upper jaw 2 via the short cylindrical pin 9, and the end of the jaw structure 3 near the connection point between the lower and upper jaws can contact the outer wall of the roller 4. The jaws 5 are inserted into the jaw structure and face away from the bottom surface of the roller, with an interference fit. The length direction of the jaws is along the length direction of the lower jaw, forming an open gap between the jaws and the end of the lower jaw. A spring assembly is provided between the upper jaw 2 and the lower jaw 1. The spring assembly can be compressed or freely extended between the upper jaw 2 and the lower jaw 1 to close or open the jaws 5.

[0041] The spring assembly provides elasticity to prevent product damage caused by instantaneous impact loads during traditional dial marking. Specifically, the spring assembly includes a limiting screw 6, a spring seat 7, and a spring 11. A threaded hole is provided on the upper pliers handle 2, and the limiting screw 6 is installed in this threaded hole and fixedly connected to the upper pliers handle 2. The head of the limiting screw 6 extends downwards into the inner hole of the spring seat 7 and is clearance-fitted with the spring seat. The open end of the spring seat has a 30° tapering end 702 that gradually narrows along the axial direction of the spring seat, allowing the limiting screw to reciprocate freely within the inner hole of the spring seat without dislodging from it.

[0042] Spring 11 is fitted onto the spring seat 7 rod, with both ends limited between the outer stepped surface 701 of spring seat 11 and the outer wall of upper clamp handle 2. The extension and retraction of spring 11 enables upper clamp handle 2 to reciprocate around cylindrical pin 10 as a pivot. By adjusting the fixed position of the limiting screw on the shaft of the first clamp handle, the travel of upper clamp handle 2 can be adjusted to ensure that the opening gap formed between the jaw 5 and the end of lower clamp handle in the free state is not less than 1.2mm (i.e., not less than the thickness of the throttle dial, ensuring that the throttle dial can be inserted into the opening gap in the free state), and that the opening gap is 1mm when upper clamp handle 2 is compressed to the spring limit position. When the spring is compressed to the limit position, the head of limiting screw 6 contacts the bottom of the inner hole of spring seat 7, and the bottom surface of spring seat 7 is in contact with the upper wall of lower clamp handle 1. At the same time, the movement of upper clamp handle can drive the roller 4 connected to it through short cylindrical pin 9 to move.

[0043] Specifically, the jaw structure 3 includes a protrusion 301 and a curved structure 302 connected to the protrusion. The bottom of the protrusion is rotatably connected to the lower jaw handle via a positioning bolt 8 and an M6 hexagonal thin nut 12. The concave portion 30201 of the curved structure faces the lower jaw handle. The center of curvature of the free end 30202 of the curved structure is opposite to the center of curvature of the concave portion. The protrusion of the free end 30202 of the curved structure contacts the outer wall of the roller 4. As the roller 4 moves with the upper jaw handle 2, it abuts against the protrusion of the free end of the curved structure, causing the curved structure to rotate around the positioning bolt 8. This, in turn, drives the jaws 5 mounted on the bottom of the protrusion to press down on the throttle dial, forming a graduation on the throttle dial. Optimally, the bottom of the protrusion of the jaw structure 3 is provided with a groove along the length of the protrusion, and the jaws are interference-fitted into the groove. The end of the jaws 5 extends slightly beyond the protrusion, which helps to visually observe whether the jaws 5 are aligned with the graduation position on the throttle dial. More specifically, the ends of the jaws are triangular bevels pointing downwards, and these triangular bevels are symmetrical with respect to the center line of the jaws.

[0044] Specifically, the lower pliers handle 1 has two vertically upward-arranged first lugs at its top. One end of the upper pliers handle 2 is located between the two first lugs and connected to the top of the lower pliers handle body via a cylindrical pin 10. The upper pliers handle 2 includes a horizontally arranged first handle section and a first curved section smoothly connected to the first handle section. The lower pliers handle 1 includes a horizontally arranged second handle section and, sequentially, a first inclined section, a horizontal section, and a second inclined section connected to the second handle section. A spring assembly is installed at the connection between the first handle section and the first curved section. Specifically, the lugs on the lower pliers handle 1 are located at the connection between the first inclined section and the horizontal section. The bottom of the protrusion on the jaw structure 3 is rotatably mounted at the connection between the horizontal section and the second inclined section of the lower pliers handle 1. Specifically, the bottom of the protrusion on the jaw structure 3 has two symmetrically arranged lugs. The connection between the horizontal section and the second inclined section of the lower pliers handle 1 has a lug perpendicular to the second inclined section, located between the two second lugs, and rotatably connected via a positioning bolt and an M6 hexagonal thin nut.

[0045] The lower jaw 1, upper jaw 2, jaw structure 3, roller 4, and jaw 5 are all made of alloy steel, and the spring 11 is made of CrMn material to ensure the reliability of the tooling.

[0046] The marking process using the marking device of this utility model is as follows:

[0047] Before marking, adjust the axial fixing position of the limiting screw 6 on the upper clamp handle 2 so that the opening gap between the jaw 5 and the top of the clamping end of the lower clamp handle 1 when the spring 11 is in free extension is not less than 1.2 mm (e.g., Figure 3(As shown) Ensure that the throttle dial can be inserted into the opening gap, press down the upper caliper handle 2 until the spring is at its compression limit position, so that the opening gap between the jaws 5 and the top of the clamping end of the lower caliper handle 1 is 1 mm (as shown). Figure 4 (As shown). Keeping the position of the limit screw 6 unchanged, adjust the overall position of the marking device so that the protrusion of the jaw structure is in a horizontal state. Insert the opening gap between the lower jaw 1 and the jaw 5 into the throttle dial from the edge of the throttle dial, and align the end of the jaw protruding with the position to be marked on the throttle dial. Press down on the upper jaw 2 by hand. At this time, the spring 11 is compressed, and the upper jaw 2 rotates around the cylindrical pin 10. The end of the upper jaw 2 is lifted, which drives the roller 4 to move. During the movement of the roller 4, it abuts against the free end 30202 of the curved structure of the jaw structure 3, which raises the free end of the curved structure of the jaw structure 3. The jaw structure rotates with the positioning bolt 8 as the pivot, driving the jaw 5 to rotate in the direction of pressing the throttle dial, thus realizing the marking of the dial.

[0048] Finally, it should be noted that the features mentioned and / or shown in the above description of exemplary embodiments of the present invention can be combined in the same or similar manner with one or more other embodiments, combined with features in other embodiments, or substituted for corresponding features in other embodiments. These combined or substituted technical solutions should also be considered as included within the protection scope of the present invention.

Claims

1. A marking device for a throttle dial, characterized in that, Includes a first jaw, a second jaw, a roller, a jaw structure, jaws, and a spring assembly; The bottom of one end of the first clamp handle is rotatably connected to the top of the second clamp handle body, and the first clamp handle can rotate in the plane where the first clamp handle and the second clamp handle are located; a roller is installed at the top of one end of the first clamp handle, and the other end is used to apply external force; The tiger's mouth structure includes a protrusion and a curved structure connected to the protrusion. The bottom of the protrusion is rotatably connected to the second clamp handle, and the concave part of the curved structure faces the second clamp handle, and the free end of the curved structure contacts the outer wall of the roller. The second pliers handle has a clamping end, and the protrusion is arranged parallel to the clamping end; the jaws are fixed to the bottom surface of the protrusion for forming a scale line on the throttle dial, and the length direction of the jaws is along the length direction of the second pliers handle. There is an opening gap between the lower end face of the jaws and the top of the clamping end of the second pliers handle, and the opening gap is used to clamp the throttle dial; The spring assembly is installed between the first and second jaws and away from the jaws, and the spring assembly is capable of opening or closing the jaws and the clamping ends of the second jaw when freely extended or compressed.

2. The marking device for a throttle dial according to claim 1, characterized in that, The spring assembly includes a limiting screw, a spring seat, and a spring; The screw of the limiting screw is fixedly installed on the first pliers handle body, and the head of the limiting screw is located in the inner hole of the spring seat; by adjusting the fixed position of the limiting screw on the shaft of the first pliers handle, the size of the opening gap between the lower end face of the jaws and the top of the clamping end of the second pliers handle can be adjusted. The open end of the spring seat has a tapering end that gradually narrows along the axial direction of the spring seat, so that the limiting screw can move freely back and forth along the axial direction of the inner hole of the spring seat without coming out. The spring is fitted onto the limiting screw and the outer wall of the spring seat, and both ends of the spring are limited between the first clamp handle and the stepped surface of the spring seat; the bottom of the spring seat can contact the upper wall surface of the second clamp handle.

3. The marking device for a throttle dial according to claim 1 or 2, characterized in that, The center of curvature of the free end of the curved structure on the tiger's mouth structure is opposite to the center of curvature of the concave part of the curved structure; the convex part of the free end of the curved structure contacts the outer wall of the roller.

4. The marking device for a throttle dial according to claim 3, characterized in that, The bottom of the protrusion of the tiger's mouth structure is provided with a slot along the length of the protrusion, and the jaws are interference-fitted into the slot.

5. The marking device for a throttle dial according to claim 4, characterized in that, The end of the jaws extends beyond the protrusion of the tiger's mouth structure, making it easy to observe whether the jaws are aligned with the marked position on the throttle dial.

6. The marking device for a throttle dial according to claim 5, characterized in that, The jaws are triangular inclined planes with the pointed end facing downwards, and the triangular inclined planes are symmetrical with respect to the center line of the jaws.

7. The marking device for a throttle dial according to claim 1 or 6, characterized in that, The second clamp handle body has two vertically upward-arranged first lugs at its top. One end of the first clamp handle is located between the two first lugs and is connected to the top of the second clamp handle body by a cylindrical pin.

8. The marking device for a throttle dial according to claim 7, characterized in that, The first pliers handle includes a horizontally arranged first handle section and a first curved section smoothly connected to the first handle section; The second clamp handle includes a horizontally arranged second handle section and a first inclined section, a horizontal section, and a second inclined section connected in sequence to the second handle section; The spring assembly is vertically installed at the connection between the first handle section and the first curved section; The first lug on the second clamp handle body is located at the connection between the first inclined section and the horizontal section; The bottom of the protrusion on the tiger's mouth structure is rotatably mounted at the connection between the horizontal section and the second inclined section of the second clamp handle.

9. The marking device for a throttle dial according to claim 8, characterized in that, The bottom of the protrusion has two symmetrically arranged second lugs, and the connection between the horizontal section and the second inclined section of the second clamp handle has a lug that is perpendicular to the second inclined section and pointing upwards; the lug is located between the two second lugs and is rotatably connected by a positioning bolt and an M6 hexagonal thin nut.

10. The marking device for a throttle dial according to claim 1, characterized in that, The first clamp handle, the second clamp handle, the jaw structure, the rollers, and the jaws are all made of alloy steel.

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