CN212109859U

CN212109859U - Threaded hole depth detection device

Info

Publication number: CN212109859U
Application number: CN202020675418.3U
Authority: CN
Inventors: 郗旭光; 杨倩; 刘颖悟
Original assignee: Shaanxi Lantong Transmission Shaft Co ltd
Current assignee: Shaanxi Lantong Transmission Shaft Co ltd
Priority date: 2020-04-28
Filing date: 2020-04-28
Publication date: 2020-12-08
Anticipated expiration: 2030-04-28

Abstract

The utility model belongs to the technical field of civil engineering and mechanical connection fastening, a screw hole degree of depth detection device is related to. Including measuring stick, measuring head, the measuring stick can be dismantled with the measuring head and be connected, and the measuring stick is equipped with position sleeve, collet chuck, pressure spring and spring gland along measuring head one end in proper order to other end axis direction. The utility model discloses simple structure, convenient operation measures simple easy grasp, measured data error is little, measurement of efficiency is high.

Description

Threaded hole depth detection device

Technical Field

The utility model belongs to the technical field of the detection instrument, a screw hole degree of depth detection device is related to.

Background

With the development of the mechanical industry, threaded connection is almost applied to various industries, and the connection reliability directly affects the product safety and reliability. Besides the thread precision, the depth of a threaded hole is also important, and the depth directly determines the strength of the threaded connection, so that the safety and the reliability of the product are influenced.

The conventional threaded hole depth detection of the construction site at present is to use a bolt with a calibrated length, screw the bolt into a threaded hole, respectively measure the heights of an exposed part of the bolt and the end face of the threaded hole, and calculate the depth of the threaded hole according to the data. The method has the advantages of more measurement data, large measurement error accumulation and low measurement efficiency.

SUMMERY OF THE UTILITY MODEL

In order to achieve the above object, the utility model provides a screw hole degree of depth detection device has solved the problem that exists among the prior art.

The utility model discloses the technical scheme who adopts is, a screw hole degree of depth detection device, including measuring stick 1, measuring head 2, measuring stick 1 can dismantle with measuring head 2 and be connected, and 1 axis direction of measuring stick is equipped with position sleeve 3, collet chuck 4, pressure spring 5 and spring gland 6 to the other end cover in proper order along 2 one ends of measuring head.

Preferably, the detachable connection of the measuring rod 1 and the measuring head 2 includes a threaded connection, a snap connection, and a magnetic connection.

Preferably, the measuring rod 1 is provided with scales 12 along the axial direction, and a connecting end 11 is arranged at the joint of the measuring rod 1 and the measuring head 2.

Preferably, the measuring head 2 is cylindrical, the circumferential surface of the measuring head 2 is provided with a measuring thread 22, and a joint 21 is arranged at the joint of the measuring head 2 and the measuring rod 1.

Preferably, the end face of the outer end of the positioning sleeve 3 close to the measuring head 2 is flat, one side of the inner cavity of the positioning sleeve 3, which is far away from the measuring head 2, is a cylindrical cavity, the cylindrical cavity is in butt joint with a conical cavity 31 along the radial direction to one side of the measuring head 2, the cavity diameter is gradually reduced, and the inner wall of the cylindrical cavity of the positioning sleeve 3 is provided with inner threads 32 of the positioning sleeve.

Preferably, the inside of the collet 4 is radially provided with a through hole to be sleeved outside the measuring rod 1, the front end of the collet 4 is a cone 41, the rear end of the cone 41 is a cylinder, and the conical surface of the cone 41 is radially provided with a plurality of contraction joints 42.

Preferably, the inner wall of the inner through hole of the elastic chuck 4 is provided with a gasket 43.

Preferably, the spring gland 6 is cylindrical, a through hole is radially formed in the spring gland 6 to be sleeved outside the measuring rod 1, and a cover thread 61 is arranged on the cylindrical surface of the spring gland 6.

Preferably, the outer end face of the spring gland 6 is provided with a rotating handle 62.

Preferably, the measuring head 2 is a series of measuring heads of different diameters to fit different thread diameters.

The utility model has the advantages that: compared with the existing measuring tool, the utility model has the advantages of direct measuring method and high measuring efficiency; only the thread measuring head needs to be replaced when the depth of the threaded holes with different diameters is measured; the error of the measured data is small because the measurement is direct rather than measurement and calculation; the utility model discloses easy to use easily masters.

Drawings

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

FIG. 1 is a schematic view of a measuring structure of a thread hole depth detecting device;

FIG. 2 is a schematic view of components;

FIG. 3 is a schematic view of the assembly of components;

in the figure: the measuring device comprises a measuring rod-1, a measuring head-2, a locating sleeve-3, an elastic chuck-4, a compression spring-5, a spring gland-6, a connecting end-11, a scale-12, a connecting head-21, a measuring thread-22, a conical cavity-31, a locating sleeve inner thread-32, a cone-41, a contraction joint-42, a gasket-43, a cover thread-61 and a rotating handle-62.

Detailed Description

The related art in 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 to be understood that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, a threaded hole depth detection device, including measuring stick 1, measuring head 2, measuring stick 1 can dismantle with measuring head 2 and be connected, and 1 axis direction of measuring stick is equipped with position sleeve 3, collet chuck 4, pressure spring 5 and spring cover 6 along 2 one end of measuring head to the other end cover in proper order.

Furthermore, the detachable connection of the measuring rod 1 and the measuring head 2 comprises a threaded connection, a buckle connection and a magnetic connection.

Furthermore, the measuring rod 1 is provided with scales 12 along the axial direction, and a connecting end 11 is arranged at the joint of the measuring rod 1 and the measuring head 2.

Further, the measuring head 2 is cylindrical, the circumferential surface of the measuring head 2 is provided with a measuring thread 22, and a joint 21 is arranged at the joint of the measuring head 2 and the measuring rod 1.

Furthermore, the outer end face of the locating sleeve 3 close to the measuring head 2 is flat, one side of the inner cavity of the locating sleeve 3, which is far away from the measuring head 2, is a cylindrical cavity, the cylindrical cavity is in butt joint with a conical cavity 31 along the radial direction to one side of the measuring head 2, the cavity diameter is gradually reduced, and the inner wall of the cylindrical cavity of the locating sleeve 3 is provided with inner threads 32 of the locating sleeve.

Furthermore, a through hole is radially arranged in the elastic chuck 4 to be sleeved outside the measuring rod 1, the front end of the elastic chuck 4 is a cone 41, the rear end of the cone 41 is a cylinder, and the conical surface of the cone 41 is radially provided with a plurality of contraction joints 42.

Further, a gasket 43 is arranged on the inner wall of the inner through hole of the elastic chuck 4.

Further, the spring gland 6 is cylindrical, a through hole is formed in the inner portion of the spring gland 6 along the radial direction so as to be sleeved outside the measuring rod 1, and a cover thread 61 is arranged on the cylindrical surface of the spring gland 6.

Furthermore, the outer side end face of the spring gland 6 is provided with a rotating handle 62.

Further, the measuring head 2 is a series of measuring heads of different diameters to fit different thread diameters.

Specifically, the utility model discloses when the assembly before the use, select the measuring head of required specification earlier, because whole measuring heads axial dimensions are the same, consequently select the measuring head of different specifications not to influence measuring result's precision. Connecting the measuring rod with scales to the selected measuring head, and sequentially assembling and pre-tightening the positioning sleeve, the elastic chuck, the compression spring and the spring gland; the utility model discloses when measuring, twist into the measured screw hole bottom with the measuring stick of screw thread measuring head with the area, promote the position sleeve, collet chuck, hold-down spring and spring gland's pretension piece cover is established on the measuring stick and will be close to the outer end of the position sleeve of measuring head one side and levels the terminal surface and paste tight screw hole outer terminal surface, rotatory spring gland turning handle hold-down spring promotes collet chuck, conical surface on the collet chuck and the conical cavity extrusion fit on the position sleeve, along with the handle constantly rotates, hold-down spring pressure increases, conical surface extrusion collet chuck shrinkage joint and then the collet chuck internal diameter dwindles, compress tightly the gasket and hold the measuring stick tightly, make measuring stick and position sleeve become a whole, then, screw out measuring stick and measuring head, make the measuring head withdraw from the screw hole, read the scale on the corresponding measuring stick of position sleeve terminal surface, can measure.

In summary, compared with the existing measuring tool, the utility model has the advantages of direct measuring method and high measuring efficiency; only the thread measuring head needs to be replaced when the depth of the threaded holes with different diameters is measured; the error of the measured data is small because the measurement is direct rather than measurement and calculation; the utility model discloses easy to use easily masters. Therefore, the utility model overcomes the defects of the prior art and has good application prospect.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.

Claims

1. The utility model provides a screw hole degree of depth detection device, its characterized in that, includes measuring stick (1), measuring head (2), measuring stick (1) with the connection can be dismantled in measuring head (2), measuring stick (1) axis direction is equipped with position sleeve (3), collet (4), pressure spring (5) and spring gland (6) to the other end cover in proper order along measuring head (2) one end.

2. Threaded hole depth detection device according to claim 1, characterized in that the detachable connection of the measuring rod (1) to the measuring head (2) comprises a threaded connection, a snap connection, a magnetic connection.

3. Threaded hole depth detection device according to claim 1, characterized in that the measuring rod (1) is provided with a scale (12) in the axial direction, and the joint of the measuring rod (1) and the measuring head (2) is provided with a connecting end (11).

4. A threaded hole depth detection device according to claim 1, characterized in that the measuring head (2) is cylindrical and has a measuring thread (22) on its circumferential surface, and the joint (21) is provided at the junction of the measuring head (2) and the measuring rod (1).

5. The threaded hole depth detection device according to claim 1, characterized in that the outer end face of the positioning sleeve (3) close to the measuring head (2) is flat, the side of the inner cavity of the positioning sleeve (3) far away from the measuring head (2) is a cylindrical cavity, the cylindrical cavity is butted with a conical cavity (31) along the radial direction towards the measuring head (2) and the cavity diameter is gradually reduced, and the inner wall of the cylindrical cavity of the positioning sleeve (3) is provided with inner threads (32) of the positioning sleeve.

6. The threaded hole depth detection device according to claim 1, characterized in that the inside of the collet (4) is radially provided with a through hole to be sleeved outside the measuring rod (1), the front end of the collet (4) is a cone (41) and the rear end thereof is a cylinder, and the conical surface of the cone (41) is radially provided with a plurality of shrinkage joints (42).

7. Threaded hole depth detection device according to claim 6, characterized in that the inner through hole wall of the collet (4) is provided with a gasket (43).

8. Threaded hole depth detection device according to claim 1, characterized in that the spring gland (6) is cylindrical and has a through hole radially inside to fit over the measuring rod (1), the cylindrical surface of the spring gland (6) being provided with a cap thread (61).

9. Threaded hole depth detection device according to claim 8, characterized in that the outer end face of the spring gland (6) is provided with a turning handle (62).

10. Threaded hole depth detection device according to claim 1, characterized in that the measuring head (2) is a series of measuring heads of different diameters to fit different thread diameters.