CN213456608U

CN213456608U - Detection apparatus for solid degree of bush riveting

Info

Publication number: CN213456608U
Application number: CN202021327272.XU
Authority: CN
Inventors: 丁召荣; 唐一鸣; 李思宇; 邹超荣; 高晓伟; 蔡鹏翔
Original assignee: Xian Railway Signal Co Ltd
Current assignee: Xian Railway Signal Co Ltd
Priority date: 2020-07-08
Filing date: 2020-07-08
Publication date: 2021-06-15
Anticipated expiration: 2030-07-08

Abstract

The utility model relates to a detection apparatus for solid degree of bush riveting, characterized by: the pressure head comprises a pressure head (1), a sliding rod (2), a plug (3), a shell (4), an indicator (5) and an elastic element (6), wherein the shell (4) is of a hollow columnar structure, the elastic element is installed in the hollow part of the shell (4), the plug (3) is of an annular structure and is installed at one end of the shell (4), the elastic element (6) is plugged in the hollow part of the shell (4), the sliding rod (2) is of a step columnar structure, a large end is located between the plug (3) and the elastic element (6) in the shell (4), a small end penetrates out of a hole of the plug (3), and when the sliding rod (2) slides along the axial direction, the large end extrudes or releases the elastic element (6) to change the deformation amount. The detection device for the riveting degree of the bushing realizes convenient detection of assembly quality and service field maintenance quality, improves the assembly quality of the bushing, and prevents the shortage of service life caused by low assembly quality.

Description

Detection apparatus for solid degree of bush riveting

Technical Field

The utility model belongs to the detection instrument of mechanical assembly process is applicable to manual detection and also is applicable to equipment such as press and detects, is about a bush and its mounting hole post-assembling connect the detection instrument of fastening degree, especially relates to a detection device of bush riveting degree.

Background

The mechanical structure is provided with a large number of holes and shaft-matched pin shaft connections, usually, the holes and the shafts rotate relatively, after long-time use or improper use, the holes or the shafts are abraded, thus possibly affecting the performance of the structure and even causing the function failure thereof, at the moment, abraded parts are replaced, in order to reduce the maintenance cost, a shaft sleeve is additionally arranged in the holes of certain structures which have long service time or obviously affect the function and the performance after abrasion, and through proper friction surface design, abrasion is caused on the surface of the bushing in the normal service process, thus, after abrasion occurs, only the bushing needs to be replaced, as the bushing needs to be replaced in use, the combination degree of the bushing and the holes needs to be controlled, accidental loosening can occur due to too loose, the matching surface of the bushing and the holes can be abraded in use, the surface of the hole can be difficult to replace due to too tight replacement, and the surface of the hole can be damaged due to replacement process, causing the apertured part to fail and require replacement.

At present, the degree of tightness of matching of a hole and a bushing is usually ensured through design parameters, whether the parameters are proper or not can be verified through a press machine or other force measuring equipment in the design process, inspection or regular and quantitative sampling inspection is not always carried out in the production and manufacturing process due to inconvenient detection, and inspection is often difficult due to the lack of detection equipment and means after the structure is replaced on a using site. Therefore, the device is simple, convenient and quick, and has great practical significance for carrying out inspection on the structural service site.

Disclosure of Invention

The utility model aims at providing a detection apparatus of bush riveting degree to the realization is to the convenient detection of assembly quality, and the convenient detection of the on-the-spot maintenance quality of being on active service, improves the assembly quality of bush, prevents not enough because of the not high life that leads to of assembly quality.

The technical scheme of the utility model is that: relate to a detection device of bush riveting degree, characterized by: it includes: the shell is of a hollow columnar structure, the elastic element is installed in the shell, the plug is of an annular structure and is installed at one end of the shell, one end of the sliding rod penetrates into the shell, the other end of the sliding rod penetrates out of a hole of the plug, the end, in the shell, of the sliding rod is in direct or indirect contact with the elastic element, the end, exposed out of the shell, of the sliding rod is connected with the pressure head, the pressure head is of a step columnar structure, one end of the sliding rod is matched with the connecting structure of the sliding rod, the end with the small diameter is matched with a bush to be detected, the end matched with the detected bush is of a step structure, the section, perpendicular to the shaft, of the small end of the step does not exceed the inner hole of the bush, and the section, perpendicular to the shaft; the shell is provided with an inner and outer communicating groove along the axial direction, the indicator extends out of the shell along the groove from the inside of the shell, and the indicator moves along the axial direction of the shell along with the sliding rod.

The shell is provided with a scale near the groove outside, and the deformation of the elastic element is corresponding to the scale by the pointer of the indicator.

The housing has a marker adjacent the slot on the exterior thereof, and the elastic element is deformed in accordance with the indicator and marker.

The center of the hollow columnar shell is provided with a through hole, and after assembly, one end without a plug is plugged.

The center of the hollow columnar shell is a blind hole, and the plug is installed at one end with the hole.

The indicator moves along the axial direction of the shell along with the sliding rod, and the indicator and the sliding rod are fixedly connected and move together.

The indicator moves along the axial direction of the shell along with the sliding rod, the indicator and the sliding rod are two independent parts, the sliding rod slides, when the end in the shell moves towards the direction far away from the plug, the indicator is pushed to move synchronously, when the end in the shell moves towards the direction close to the plug, the end cannot enable the indicator to move, the indicator is kept at the position corresponding to the farthest distance of the end in the moving process towards the direction far away from the plug, and the indicator can be pushed to move to be tightly attached to the sliding rod manually.

The utility model discloses a principle and advantage are:

after the pressing head is sleeved in the bushing, the shell is pushed to move towards the bushing, the shell pushes the elastic element to move towards the bushing, the axial displacement of the pressing head is limited by the bushing, and the sliding rod cannot move towards the bushing, so that one end, close to the sliding rod, of the elastic element cannot move, the elastic element is compressed and deformed to generate elastic force which acts on the bushing through the sliding rod and the pressing head, meanwhile, the indicator and the shell also move relatively, the scale corresponding to the indicator indicates the current elastic force value, or when the indicator is aligned with the marked position on the shell, the elastic force reaches a set value, when the specified elastic force is applied to the bushing and the bushing does not move axially relative to the mounting hole, the combination strength of the bushing and the mounting hole is larger than the set elastic force value, and when the shell has scales, the elastic force value corresponding to the scales can be read when the bushing moves axially relative to the mounting hole, the value of the bond strength of the bushing and mounting hole is then known.

In practical application, the specifications of the bushing are various, the pressure head of the detection tool can be replaced, and the bushing with various specifications can be detected only by manufacturing a proper pressure head under the condition that the elastic force range meets the requirement.

When it is only necessary to check that the bonding strength meets the requirements, a minimum bonding strength indication, a maximum bonding strength indication can be made on the housing.

When the bonding strength value needs to be known, the shell needs to be provided with scales corresponding to the elastic force value.

When the bonding strength is large in value and it is impossible to apply a desired force value by hand, a force applying device such as a press may be used to generate the elastic force.

Drawings

FIG. 1 is a schematic structural view of example 1.

Fig. 2 is a top view of fig. 1.

FIG. 3 is a schematic structural view of example 2.

Fig. 4 is a top view of fig. 3.

FIG. 5 is a schematic structural view of example 3.

Fig. 6 is a top view of fig. 5.

In the figure: 1. a pressure head; 2. a slide bar; 3. a plug; 4. a housing; 5. an indicator; 6. an elastic element; 7. a friction device; 8. and (4) a terminal.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined purpose, the following detailed description of the embodiments, structural features and effects of the present invention will be made with reference to the accompanying drawings and examples.

Example 1

As shown in fig. 1 and 2, the utility model relates to a detection device for the riveting degree of a bush, which is characterized in that: the pressure head comprises a pressure head 1, a sliding rod 2, a plug 3, a shell 4, an indicator 5 and an elastic element 6, wherein the shell 4 is of a cylindrical hollow structure, a blind hole is arranged in the center and is provided with an elongated slot penetrating through the wall of the shell along the axial direction, scales distributed along the axial direction are arranged near the elongated slot of the outer wall, the open end of the blind hole is provided with a thread, the plug 3 is of an annular structure, the periphery of the blind hole is provided with a thread matched with the end head of the blind hole of the shell 4 and is fixed at the open end of the blind hole of the shell 4, the elastic element 6 is arranged in the blind hole of the shell 4 and can axially and elastically deform along the blind hole, the sliding rod 2 is of a step cylindrical structure, the big end of the sliding rod is matched with the blind hole of the shell 4 and can slide in the blind hole, the small end of the sliding rod is matched with the hole of the plug 3 and penetrates through and extends, the section of the small end of the step, which is vertical to the shaft, does not exceed the inner hole of the bush, and the section of the large end of the step, which is vertical to the shaft, exceeds the inner hole of the bush but does not exceed the outer diameter of the bush; the column that pressure head 1 and slide bar 2 match can insert the blind hole of the little end of slide bar 2 and fix, the middle part of indicator 5 is the column that can pass the casing 4 elongated slot, and one end has the pointer, and the pointer end exposes in casing 4, and the other end is fixed with the big end of slide bar 2.

Pressure head 1 designs according to the bush specification that needs detected among the practical application, and the scale on elastic element 6 and the casing 4, the bonding strength design as required also can form a complete set the elastic element 6 of a plurality of specifications, and the scale that casing 4 corresponds has different proportional relation with different elastic element 6, and pressure head 1 can be changed, and its column structure specification with slide bar 2 matching end is unified, and its and the step end that is detected bush complex designs according to the bush specification.

Example 2

As shown in fig. 3 and 4, in the structure of embodiment 1, the indicator 5 is fixedly connected to the sliding rod 2, the change of the scale corresponding to the indicator pointer needs to be observed in the detection process, when the force applied in the detection process is removed or the bushing starts to displace, the pointer of the indicator 5 will move along with the sliding rod 2, and if no scale reading is observed before the indicated scale changes, the reading cannot be obtained or the reading is incorrect. This problem can be solved by separating the indicator 5 from the slide bar 2 in the present embodiment.

As described in embodiment 1, a friction device 7 is installed in the blind hole of the housing 4, the friction device 7 is located between the bottom of the blind hole of the housing 4 and the end of the sliding rod 2, the friction device 7 can slide along the axial direction of the housing 4, the friction device 7 and the housing 4 have controllable friction force, no relative movement exists between the friction device 7 and the housing 4 when no external force is applied, the friction device 7 and the sliding rod 2 are overlapped in the direction perpendicular to the axial direction of the housing 4, the sliding rod 2 pushes the friction device 7 only when moving towards the friction device 7, the friction device 7 is kept in the original position when moving in the reverse direction, the friction device 7 is separated from the friction device, and the indicator 5 is fixedly connected with the friction device 7, so that the indicator 5 can record the corresponding scale when the sliding rod makes.

Before each measurement, the position of the indicator 5 is checked, and the indicator is slid to the corresponding minimum scale, or the friction device 7 is tightly attached to the end 8 of the sliding rod 2.

The rest is the same as the embodiment 1 and is not described in detail.

Example 3

As shown in fig. 5 and 6, in embodiments 1 and 2, the housing 4 is a cylindrical hollow structure with a blind hole at the center, and for convenience of processing, the housing 4 may be a cylindrical hollow structure with a through hole at the center, and the housing 4 is sealed into a blind hole structure by using the tip 8, and the rest of the structure is the same as that of embodiment 1 or embodiment 2, and will not be described in detail.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. The utility model provides a detection apparatus for bush riveting degree, characterized by: comprises a pressure head (1), a sliding rod (2), a plug (3), a shell (4), an indicator (5) and an elastic element (6), wherein the shell (4) is of a hollow columnar structure, the elastic element is arranged in the hollow part of the shell (4), the plug (3) is of an annular structure and is arranged at one end of the shell (4), the elastic element (6) is plugged in the hollow part of the shell (4), the sliding rod (2) is of a step columnar structure, the large end of the sliding rod is positioned between the plug (3) and the elastic element (6) in the shell (4), the small end of the sliding rod penetrates out of a hole of the plug (3), the large end of the sliding rod (2) extrudes or releases the elastic element (6) to change the deformation amount when the sliding rod (2) slides along the axial direction, the end of the sliding rod (2) exposed out of the shell (4) is connected with the pressure head (1), the pressure head (1) is of the step columnar structure, and one end, the other end of the indicator is matched with a bush to be detected, one end matched with the bush to be detected is of a step structure, the small end of the step can penetrate into an inner hole of the bush, the large end of the step cannot penetrate into the inner hole of the bush but can penetrate into a hole for installing the bush, an axially long groove is formed in the shell (4) and penetrates through the wall of the shell (4), the middle section of the indicator (5) is of a columnar structure and can slide in the long groove of the shell (4), an indicator is arranged at the end exposed outside the shell (4), and the part positioned in the shell (4) can slide in the shell (4) along the axial direction.

2. The apparatus for detecting the degree of caulking of a bush according to claim 1, wherein: scales are arranged on the outer wall of the shell (4) near the long groove, and the deformation of the elastic element (6) is correspondingly displayed by a pointer of the indicator (5) and the scales.

3. The apparatus for detecting the degree of caulking of a bush according to claim 1, wherein: the outer wall of the shell (4) is provided with a limit value indicating line near the long groove, and the limit elastic force generated by the elastic element (6) is correspondingly displayed by the pointer of the indicator (5) and the limit value indicating line.

4. The apparatus for detecting the degree of caulking of a bush according to claim 1, wherein: the hollow structure of the shell (4) is an axial through hole, and the other end without the plug (3) is plugged by an end part.

5. The apparatus for detecting the degree of caulking of a bush according to claim 1, wherein: the hollow structure of the shell (4) is an axial blind hole, and a plug (3) is installed at the opening end of the blind hole.

6. The apparatus for detecting the degree of caulking of a bush according to claim 1, wherein: the indicator (5) is fixedly connected with the sliding rod (2) and moves together with the sliding rod.

7. The apparatus for detecting the degree of caulking of a bush according to claim 1, wherein: indicator (5) and slide bar (2) be two independent parts, indicator (5) are promoted by slide bar (2), when slide bar (2) slide, its end in casing (4) when keeping away from end cap (3) direction motion, promote indicator (5) synchronous motion, when end in casing (4) is to being close to end cap (3) direction motion, indicator (5) keep original position, do not take place the motion.