CN214582974U

CN214582974U - Connecting rod big and small head hole center distance checking fixture

Info

Publication number: CN214582974U
Application number: CN202121194128.8U
Authority: CN
Inventors: 岳海军; 黄丽娟; 王全贺; 苗志杰; 朱瑞红
Original assignee: Nangong Jingqiang Connecting Rod Co ltd
Current assignee: Nangong Jingqiang Connecting Rod Co ltd
Priority date: 2021-05-31
Filing date: 2021-05-31
Publication date: 2021-11-02
Anticipated expiration: 2031-05-31

Abstract

The utility model relates to an utensil is examined to big or small head hole centre-to-centre spacing of connecting rod, it includes: the child specifically, the child specifically includes: the base comprises a vertical plate, and a vertical plate through hole is formed in the vertical plate; the large head pin and the small head pin are both arranged on one side of the vertical plate, an accommodating area is arranged in the large head pin, and a groove communicated with the accommodating area is formed in the outer wall of the large head pin; the cylinder meter support is arranged on the other side of the vertical plate, and a support through hole for a meter rod of the cylinder meter to pass through is formed in the cylinder meter support; and the end part of the cylinder meter sequentially penetrates through the bracket through hole and the vertical plate through hole and then is fixed in the accommodating area, and the contact positioned on the end part extends out of the open groove, so that pressure is applied to the contact when the large end of the connecting rod is fixed on the large end pin. The gauge is small in size and light in weight, can be moved to any position according to needs, can be used for detecting in a production field, and can be used for monitoring the quality of a workpiece in real time.

Description

Connecting rod big and small head hole center distance checking fixture

Technical Field

The utility model relates to a connecting rod fixture technical field especially relates to a utensil is examined to big small end hole centre-to-centre spacing of connecting rod.

Background

The connecting rod is one of the main transmission mechanisms of automobile engine, and connects the piston and crankshaft to transmit the expanding gas pressure acting on the top of piston to crankshaft, so that the reciprocating linear motion of piston can be reversibly converted into the rotary motion of crankshaft to output power. In order to ensure the function of the connecting rod, after the machining is completed, a checking fixture is often required to detect whether the distance a between the centers of the large-head hole and the small-head hole of the connecting rod (i.e., the center distance between the large-head hole and the small-head hole of the connecting rod) meets the requirement, as shown in fig. 1.

At present, a detection tool is not arranged on the working site of a semi-fine boring big-end hole, a connecting rod needs to be taken to a metering chamber and then detected by three coordinates, the detection mode not only influences the working efficiency of workers, but also causes the reduction of detection frequency, and the quality of workpieces cannot be guaranteed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an utensil is examined to big or small first hole centre-to-centre spacing of connecting rod to solve the problem that proposes among the above-mentioned background art.

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

a connecting rod big and small head hole center distance detection tool comprises:

the child specifically, the child specifically includes: the base comprises a vertical plate, and a vertical plate through hole is formed in the vertical plate; the large head pin and the small head pin are both arranged on one side of the vertical plate, an accommodating area is arranged in the large head pin, and a groove communicated with the accommodating area is formed in the outer wall of the large head pin;

the cylinder meter support is arranged on the other side of the vertical plate, and a support through hole for a meter rod of the cylinder meter to pass through is formed in the cylinder meter support;

and the end part of the cylinder meter sequentially penetrates through the bracket through hole and the vertical plate through hole and then is fixed in the accommodating area, and the contact positioned on the end part extends out of the open groove, so that pressure is applied to the contact when the large end of the connecting rod is fixed on the large end pin.

As a further improvement, the axle center of the bracket through hole and the axle center of the vertical plate through hole are located on the same horizontal line.

As a further improvement of the present invention, the base is T-shaped, and further includes a bottom plate, the vertical plate is fixedly disposed on the upper surface of the bottom plate.

As a further improvement of the utility model, the bottom plate and the riser are integrally formed.

As a further improvement of the present invention, the pin comprises: the mounting structure comprises a first mounting seat and a large hole mounting boss, wherein the first mounting seat is fixed on the vertical plate through a bolt, the large hole mounting boss is fixedly arranged on one side, away from the vertical plate, of the first mounting seat, and the groove is formed in the large hole mounting boss.

As a further improvement of the present invention, the small end pin includes: the second mounting seat is fixed on the vertical plate through bolts, and the small hole mounting boss is fixedly arranged on one side, far away from the vertical plate, of the second mounting seat.

As a further improvement, the axle center of the large hole installation boss and the axle center of the small hole installation boss are positioned on the same horizontal line.

As a further improvement of the utility model, the cylinder meter support is the T type, the support through-hole sets up on the lug of cylinder meter support.

As a further improvement, the gauge cylinder meter bracket is further provided with a plurality of limiting holes communicated with the bracket through holes on the side wall of the lug, and the limiting holes are used for the bolts to pass through.

Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:

the connecting rod large and small head hole center distance gauge provided by the embodiment of the utility model has the advantages that the connecting rod can be fixed at a specific position by arranging the large head pin and the small head pin on one side of the vertical plate, the operation of workers is not needed, and the burden is reduced; the accommodating space for accommodating the end part of the measuring cylinder meter is arranged in the big-end pin, and the side wall of the big-end pin is provided with the open groove for the upper contact of the end part to extend out, so that the measuring of the center distance of the big and small end holes of the connecting rod can be realized by extruding the contact when the big end of the connecting rod is fixed on the big-end pin, and the measuring mode is simple, convenient and quick.

In addition, the checking fixture is small in size and light in weight, can be moved to any position according to needs, can be used for detecting in a production field, and can be used for monitoring the quality of a workpiece in real time.

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 embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are 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 structural diagram of a connecting rod provided in the prior art.

Fig. 2 is a schematic structural view of the checking fixture for center distance of the big and small head holes of the connecting rod provided by the embodiment of the utility model.

Fig. 3 is a partially enlarged view of a portion a in fig. 2.

Fig. 4 is a schematic structural diagram of a fixture and a cylinder meter support according to an embodiment of the present invention.

Fig. 5 is a schematic view of the structure of fig. 4 in another state.

Fig. 6 is a front view of a pin according to an embodiment of the present invention.

Fig. 7 is a side view of a pin according to an embodiment of the present invention.

Wherein: 100. the measuring cylinder meter comprises a connecting rod 1, a mould body, 11, a base, 110, a vertical plate through hole, 111, a vertical plate, 112, a bottom plate, 12, a large-head pin, 121, an accommodating area, 122, a groove, 123, a first mounting seat, 124, a large-hole mounting boss, 13, a small-head pin, 131, a second mounting seat, 132, a small-hole mounting boss, 2, a measuring cylinder meter support, 21, a support through hole, 22, a bump, 23, a limiting hole, 3, a measuring cylinder meter, 31, a meter rod, 32, an end part, 33, a contact, 4 and a bolt.

Detailed Description

To make the objects, aspects and advantages of the present invention clearer, and in accordance with the following detailed description of certain embodiments of the present invention, it is to be understood that the terms "center," "vertical," "horizontal," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship shown in the accompanying drawings, which are used for convenience of description and simplicity of illustration, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

The embodiment of the utility model provides an utensil is examined to big or small first hole centre-to-centre spacing of connecting rod, as shown in fig. 2-7, it includes:

as shown in fig. 2 to 5, the tire body 1 includes: the base 11 comprises a vertical plate 111, and a vertical plate through hole 110 is formed in the vertical plate 111; the big-head pin 12 and the small-head pin 13 are both arranged on one side of the vertical plate 111, the big-head pin 12 is internally provided with an accommodating area 121, and the outer wall of the big-head pin is provided with a slot 122 communicated with the accommodating area 121;

the cylinder meter bracket 2 is arranged on the other side of the vertical plate 111, and a bracket through hole 21 for the meter rod 31 of the cylinder meter 3 to pass through is formed in the cylinder meter bracket 2;

in the cylinder meter 3, the end portion 32 of the connecting rod passes through the bracket through hole 21 and the vertical plate through hole 110 in sequence and then is fixed in the accommodating area 121, and the contact 33 on the end portion 32 extends out of the slot 122, so that the contact 33 is pressed when the large end of the connecting rod is fixed on the large end pin 12.

Above-mentioned cylinder meter 3's gauge outfit can be the amesdial, or other scalings that satisfy the requirement, the embodiment of the utility model provides a do not injecing this, in addition, for the detection precision that improves cylinder meter 3, the axle center of support through-hole 21 and the axle center of riser through-hole 110 are located same water flat line to guarantee cylinder meter 3 horizontal installation.

The embodiment of the utility model provides a be applicable to the scene of measuring the big or small head hole centre-to-centre spacing of connecting rod, when needs are measured, can move this utensil to the position that satisfies the requirement wantonly, fix connecting rod major part and connecting rod minor part respectively on major part round pin 12 and minor part round pin 13, at this moment, the inner wall extrusion contact 33 of connecting rod major part, and make the gauge outfit pointer of graduated flask table 3 rotate to make things convenient for the staff to acquire the centre-to-centre spacing in the big or small head hole of connecting rod according to the reading of graduated flask table 3.

For example: the reading of the cylinder meter is 0 after the connecting rod (namely the standard workpiece) meeting the requirements is fixed on the checking fixture, and the center distance of the big and small head holes of the connecting rod can be determined according to the offset angle and the offset direction of the pointer of the cylinder meter relative to the scale of 0 after the connecting rod to be detected is fixed on the checking fixture in the detection process.

The connecting rod large and small head hole center distance checking fixture provided by the embodiment of the utility model can fix the connecting rod at a specific position by arranging the large head pin 12 and the small head pin 13 on one side of the vertical plate 111, without being held by the hands of workers, thereby reducing the burden; the accommodating space for accommodating the end part 32 of the cylinder meter is arranged in the big end pin 12, and the side wall of the big end pin 12 is provided with the slot 122 for the contact 33 on the end part 32 of the cylinder meter to extend out, so that the measurement of the center distance of the big end hole and the small end hole of the connecting rod can be realized by extruding the contact 33 when the big end of the connecting rod is fixed on the big end pin 12, and the measurement mode is simple, convenient and quick.

Hereinafter, the structures of the tire body 1 and the meter cylinder support 2 will be described separately.

Regarding the structure of the base 11 in the tire body 1, in a possible implementation manner, as shown in fig. 4 and 5, the base 11 is T-shaped, and further includes a bottom plate 112, a vertical plate 111 is fixedly disposed on an upper surface of the bottom plate 112, and in addition, the bottom plate 112 and the vertical plate 111 are integrally formed, so that the base 11 is an integral body.

With regard to the structure of the big-end pin 12 in the tire body 1, in order to ensure that it matches with the big end of the connecting rod, as shown in fig. 2-7, the big-end pin 12 includes: the first mounting base 123 is fixed on the vertical plate 111 through a bolt, and the large hole mounting boss 124 is fixedly arranged on one side, far away from the vertical plate 111, of the first mounting base 123.

As shown in fig. 2 and 3, the inner hollow space of the first mounting seat 123 and the inner hollow space of the large hole support boss form an accommodation area 121 for accommodating the cylinder head 32, and the open groove 122 is provided on the large hole mounting boss 124.

Regarding the structure of the small-end pin 13 in the tire body 1, in order to ensure that it matches with the small end of the connecting rod, it is similar to the structure of the large-end pin 12, and as shown in fig. 2-4, the small-end pin 13 includes: second mount pad 131 and aperture installation base 132, second mount pad 131 passes through the bolt fastening on riser 111, and aperture installation base 132 sets firmly in the one side that second mount pad 131 keeps away from riser 111.

In addition, the axle center of the small hole mounting boss 132 and the axle center of the large hole mounting boss 124 are positioned on the same horizontal line, so that the connecting rod is prevented from inclining, and the measurement precision is improved.

With regard to the mechanism of the cylinder meter support 2, in order to ensure that it is both convenient to fix the cylinder meter 3 and that the gauge rod 31 of the cylinder meter 3 remains horizontal, in one possible implementation, as shown in fig. 2-5, the cylinder meter support 2 is T-shaped, with the support through-holes 21 provided on the projections 22 of the cylinder meter support 2; in addition, a plurality of limiting holes 23 communicated with the support through holes 21 are further formed in the side wall of the convex block 22 of the measuring cylinder meter support 2, the limiting holes 23 are used for bolts to penetrate through, the bolts are screwed to abut against the outer wall of the meter rod 31 to fix the meter rod 31, and two or three limiting holes 23 can be formed.

The embodiment of the utility model provides an utensil is examined to big small end hole centre-to-centre spacing of connecting rod has following advantage:

1. the workpiece can be detected in real time in a production field;

2. the gauge is small and exquisite, the manufacturing cost is low, and the manufacturing mode is simple and convenient;

3. compared with the existing method of taking the connecting rod to the measuring chamber and then detecting by using three coordinates, the method can improve the detection efficiency by more than 2 times.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.

Claims

1. The utility model provides a utensil is examined to big or small first hole centre-to-centre spacing of connecting rod which characterized in that, it includes:

a carcass body (1), said carcass body (1) comprising: the base (11) comprises a vertical plate (111), and a vertical plate through hole (110) is formed in the vertical plate (111); the big head pin (12) and the small head pin (13) are both arranged on one side of the vertical plate (111), an accommodating area (121) is arranged inside the big head pin (12), and a notch (122) communicated with the accommodating area (121) is formed in the outer wall of the big head pin (12);

the cylinder meter support (2) is arranged on the other side of the vertical plate (111), and a support through hole (21) for a meter rod (31) of the cylinder meter (3) to pass through is formed in the cylinder meter support;

and the end part (32) of the cylinder meter (3) sequentially penetrates through the bracket through hole (21) and the vertical plate through hole (110) and then is fixed in the accommodating area (121), and a contact (33) positioned on the end part (32) extends out of the groove (122), so that pressure is applied to the contact (33) when the big head of the connecting rod is fixed on the big head pin (12).

2. The connecting rod big-small head hole center distance detection tool according to claim 1, wherein the axis of the bracket through hole (21) and the axis of the vertical plate through hole (110) are located on the same horizontal line.

3. The checking fixture for the center distance between the large head hole and the small head hole of the connecting rod as defined in claim 1, wherein the base (11) is T-shaped, and further comprises a bottom plate (112), and the vertical plate (111) is fixedly arranged on the upper surface of the bottom plate (112).

4. The checking fixture for the center distance between the large head hole and the small head hole of the connecting rod as claimed in claim 3, wherein the bottom plate (112) and the vertical plate (111) are integrally formed.

5. The connecting rod big-small head hole center distance checking fixture as claimed in claim 1, wherein the big-head pin (12) comprises: the mounting structure comprises a first mounting seat (123) and a large-hole mounting boss (124), wherein the first mounting seat (123) is fixed on the vertical plate (111) through bolts, the large-hole mounting boss (124) is fixedly arranged on one side, far away from the vertical plate (111), of the first mounting seat (123), and the open groove (122) is formed in the large-hole mounting boss (124).

6. The connecting rod big-small head hole center distance checking fixture as claimed in claim 5, wherein the small head pin (13) comprises: the mounting structure comprises a second mounting seat (131) and a small hole mounting boss (132), wherein the second mounting seat (131) is fixed on the vertical plate (111) through a bolt, and the small hole mounting boss (132) is fixedly arranged on one side, far away from the vertical plate (111), of the second mounting seat (131).

7. The connecting rod big-small head hole center distance detection tool as claimed in claim 6, wherein the axis of the big hole mounting boss (124) and the axis of the small hole mounting boss (132) are located on the same horizontal line.

8. The connecting rod big-small head hole center distance detection tool according to claim 1, characterized in that the cylinder meter support (2) is T-shaped, and the support through hole (21) is arranged on a projection (22) of the cylinder meter support (2).

9. The checking fixture for the center distance between the large and small end holes of the connecting rod as claimed in claim 8, wherein a plurality of limiting holes (23) communicated with the support through holes (21) are further formed in the side wall of the projection (22) of the cylinder meter support (2), and the limiting holes (23) are used for bolts to pass through.