CN212721221U

CN212721221U - Tool for detecting thread exposure length of piston rod of shock absorber

Info

Publication number: CN212721221U
Application number: CN202021583885.XU
Authority: CN
Inventors: 周平
Original assignee: Sichuan Ningjiang Shanchuan Machinery Co ltd
Current assignee: Sichuan Ningjiang Shanchuan Machinery Co ltd
Priority date: 2020-08-03
Filing date: 2020-08-03
Publication date: 2021-03-16
Anticipated expiration: 2030-08-03

Abstract

The utility model relates to a detect auxiliary fixtures technical field, a frock for detecting shock absorber piston rod screw thread exposes length is disclosed, including both ends open-ended measuring cylinder, measuring cylinder lower extreme terminal surface can laminate mutually with the nut top surface of piston rod, the shaft-like measuring head of sliding connection in the measuring cylinder, measuring cylinder upper end opening can be worn out to the measuring head upper end, promote the mode that the measuring head slided and stretches out through the piston rod screw thread section, the length that surpasss the nut with the piston rod screw thread section turns into the measuring head and stretches out the length of measuring cylinder, convenient operation, observe directly, judge accurately, and can not cause artificial operation error because of crooked etc., have very big spreading value and wide application prospect.

Description

Tool for detecting thread exposure length of piston rod of shock absorber

Technical Field

The utility model relates to a detect auxiliary fixtures technical field, concretely relates to frock for detecting shock absorber piston rod screw thread exposes length.

Background

Due to the fact that the piston rod threads and the nut threads are damaged, and impurities are stuck in the piston rod or the nut, the electric gun cannot be really screwed down although the preset torque is achieved, connection position shifting and abnormal sounds can be caused after assembly, and customers complain about the situation. After the assembly finishes torque, the large end of the piston rod can protrude out of the end face of the nut by a certain length, the exposed length of the thread of the piston rod of the shock absorber is an important detection item in the shock absorber assembly, and the exposed length is required to be larger than the length specified by the technical requirement.

Among the present conventional technical scheme, utilize unilateral gage block to detect usually to the nut terminal surface is the benchmark, detects piston rod terminal surface and gage block limit position and whether has the clearance, judges whether qualified piston rod screw thread exposes length, thereby confirms whether the assembly part laminates behind the moment and targets in place, but this set of mechanism can have following problem when practical: the exposed part of the piston rod thread is arranged in the groove of the outer connecting sleeve component, so that the gap is difficult to confirm; the gauge block is designed to be the size of a go gauge, the tolerance is small, and the gap between the gauge and the end face of the piston rod is small; the gauge block is positioned on the nut in a single side, and the positioning is easy to skew during operation, so that the hidden trouble of inaccurate measurement is caused.

Therefore, the technical field of auxiliary detection tools urgently needs a tool which is convenient to operate, direct to observe, accurate to judge and free of manual operation errors caused by skew and the like and is used for detecting the thread exposure length of the piston rod of the shock absorber.

Disclosure of Invention

The utility model overcomes prior art's defect provides a convenient operation, observes directly, judges accurately, and can not cause the frock that is used for detecting shock absorber piston rod screw thread and exposes length of human operation error because of crooked etc..

The utility model discloses a following technical scheme realizes:

the utility model provides a frock for detecting shock absorber piston rod screw thread exposes length, includes both ends open-ended measuring cylinder, measuring cylinder lower extreme terminal surface can laminate mutually with the nut top surface of piston rod, the shaft-like measuring head of sliding connection in the measuring cylinder, measuring cylinder upper end opening can be worn out to the measuring head upper end, the opening of measuring cylinder lower extreme can be allowed the piston rod screw thread section to insert.

Further, the measuring cylinder comprises a cylindrical reference block with two open ends, the lower end face of the reference block can be attached to the top face of the nut of the piston rod, the upper end face of the reference block is fixedly connected with a limiting block, the limiting block is cylindrical with two open ends, the inner hole of the limiting block is a stepped hole, the aperture close to the reference block is larger than the aperture far away from the reference block and larger than the aperture close to the reference block, a shaft shoulder is arranged in the middle of the measuring head, and the shaft shoulder can slide in the large-aperture inner hole of the reference block along the axial direction.

Furthermore, a plurality of positioning pins are arranged between the top surface of the reference block and the bottom surface of the limiting block, and pin holes are formed in the positions, corresponding to the positioning pins, of the top surface of the reference block and the bottom surface of the limiting block.

Furthermore, reset spring is established to the cover in the measuring head outside, reset spring is located between shaft shoulder top surface and the large aperture hole top surface of reference block.

Furthermore, the lateral surface of measuring head upper end is equipped with the annular.

Furthermore, the groove bottom of the ring groove or the indicating ring arranged in the ring groove is provided with a color coating layer.

Compared with the prior art, the utility model, following advantage and beneficial effect have:

the utility model discloses a both ends open-ended measuring cylinder, measuring cylinder lower extreme terminal surface can laminate mutually with the nut top surface of piston rod, the shaft-like measuring head of sliding connection in the measuring cylinder, measuring cylinder upper end opening can be worn out to the measuring head upper end, promote the mode that the measuring head slides and stretches out through the piston rod screw thread section, the length that surpasss the nut with the piston rod screw thread section turns into the length that the measuring head stretches out the measuring cylinder, high durability and convenient operation, observe directly, judge accurately, and can not cause artificial operation error because of crooked etc., very big spreading value and wide application prospect have.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is a sectional view of the whole structure of the present invention;

FIG. 2 is a schematic sectional view of the reference block of the present invention;

fig. 3 is a schematic front view of a measuring head according to the present invention;

FIG. 4 is a schematic sectional view of the limiting block of the present invention;

fig. 5 is the utility model discloses detect the dissection sketch map of frock adversary's piece.

Reference numbers and corresponding part names in the drawings:

the device comprises a reference block 1, a positioning pin 2, a measuring head 3, a limiting block 4, a return spring 5 and an indicating ring 6.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.

The utility model provides a frock for detecting shock absorber piston rod screw thread exposes length, includes both ends open-ended measuring cylinder, measuring cylinder lower extreme terminal surface can laminate mutually with the nut top surface of piston rod, sliding connection shaft-like measuring head 3 in the measuring cylinder, measuring cylinder upper end opening can be worn out to the 3 upper ends of measuring head, the opening of measuring cylinder lower extreme can be allowed the piston rod screw thread section to insert. It can be understood that the measuring head 3 is pushed to slide and stretch out through the piston rod thread section, the length of the piston rod thread section exceeding the nut is converted into the length of the measuring head 3 stretching out of the measuring cylinder, the operation is convenient, the observation is direct, the judgment is accurate, and the artificial operation error caused by deflection and the like can be avoided.

Further, the measuring cylinder includes two end open-ended

cylindric reference block

1, 1 lower extreme terminal surface of reference block can laminate mutually with the nut top surface of piston rod, 1 upper end terminal surface rigid coupling stopper 4 of reference block, stopper 4 is both ends open-ended cylindric, stopper 4's hole is the shoulder hole, and the aperture that is close to reference block 1 is greater than the aperture of keeping away from reference block 1 and the aperture that is close to reference block 1 is greater than the aperture of

reference block

1, 3 middle parts of measuring head are equipped with the shaft shoulder, the shaft shoulder can be in 1 large aperture hole of reference block along endwise slip. It can be understood that the measuring cylinder is set as a reference block 1 and a limiting block 4, the measuring cylinder is more convenient to process, the outer side wall of the measuring head 3 is provided with a shaft shoulder to prevent the measuring head 3 from sliding out carelessly, and the precision of the checking fixture is guaranteed.

Furthermore, a plurality of positioning pins 2 are arranged between the top surface of the reference block 1 and the bottom surface of the limiting block 4, and pin holes are arranged at positions of the top surface of the reference block 1 and the bottom surface of the limiting block 4 corresponding to the positioning pins 2. It will be appreciated that the locating pins 2 and pin holes are provided. Can guarantee the relative fixation of position between benchmark piece 1 and the stopper 4, can also carry out spot welding at laminating seam position in the actual operation process, further improve intensity and precision.

Furthermore, reset spring 5 is established to 3 outside covers of measuring head, reset spring 5 is located between shaft shoulder top surface and 1 large aperture hole top surface of benchmark piece. It can be understood that the reset spring 5 is arranged to keep the measuring head 3 close to the lower part, so that the measuring head 3 is prevented from shaking up and down in the inner cavity of the limiting block 4.

Furthermore, the lateral surface of the upper end of the measuring head 3 is provided with a ring groove. Furthermore, the ring groove is provided with the indicating ring 6 or the groove bottom of the ring groove is provided with a color coating layer. It can be understood that the length of the measuring head 3 extending out of the measuring cylinder can be directly judged to be up to standard after the ring groove is arranged, and then whether the length of the piston rod thread section exceeding the nut is qualified is reflected, namely the ring groove is exposed to be qualified, and the ring groove is not exposed to be unqualified. The indicator ring 6, the latter of which is colored, is more visually observable.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

It is to be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention, and are not intended to indicate or imply that the claimed components or mechanisms must be in a particular orientation, constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only an embodiment of the present invention, and should not be used to limit the protection scope of the present invention, any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a frock for detecting shock absorber piston rod screw thread exposes length which characterized in that, includes the measuring cylinder of both ends open-ended, measuring cylinder lower extreme terminal surface can laminate mutually with the nut top surface of piston rod, sliding connection shaft-like measuring head (3) in the measuring cylinder, measuring cylinder upper end opening can be worn out to measuring head (3) upper end, the opening of measuring cylinder lower extreme can be allowed the piston rod screw thread section to insert.

2. The tool for detecting the thread exposure length of the piston rod of the shock absorber as claimed in claim 1, wherein the measuring cylinder comprises a cylindrical reference block (1) with two open ends, the lower end face of the reference block (1) can be attached to the top face of the nut of the piston rod, the upper end face of the reference block (1) is fixedly connected with a limiting block (4), the limiting block (4) is cylindrical with two open ends, the inner hole of the limiting block (4) is a stepped hole, the diameter close to the reference block (1) is larger than the diameter far away from the reference block (1) and the diameter close to the reference block (1) is larger than the diameter of the reference block (1), a shaft shoulder is arranged in the middle of the measuring head (3), and the shaft shoulder can axially slide in the large-diameter inner hole of the reference block (1).

3. The tool for detecting the thread exposure length of the piston rod of the shock absorber according to claim 2, wherein a plurality of positioning pins (2) are arranged between the top surface of the reference block (1) and the bottom surface of the limiting block (4), and pin holes are formed in the positions, corresponding to the positioning pins (2), of the top surface of the reference block (1) and the bottom surface of the limiting block (4).

4. The tool for detecting the exposed length of the thread of the piston rod of the shock absorber as claimed in claim 2, wherein a return spring (5) is sleeved outside the measuring head (3), and the return spring (5) is located between the top surface of the shaft shoulder and the top surface of the large-aperture inner hole of the reference block (1).

5. The tool for detecting the exposed length of the thread of the piston rod of the shock absorber as recited in claim 1, wherein the outer side surface of the upper end of the measuring head (3) is provided with a ring groove.

6. The tool for detecting the exposed length of the thread of the piston rod of the shock absorber as recited in claim 5, wherein the indicating ring (6) is arranged in the ring groove, or a color coating layer is arranged at the bottom of the groove of the ring groove.