Bushing positioning device

Abstract

The utility model relates to a bushing positioning device which is used for positioning a bushing, the bushing comprises a long-end plane, a short-end plane and a first cambered surface for connecting the long-end plane and the short-end plane, and the first cambered surface comprises a first abutting surface, a second abutting surface and an anti-rotation clamping point; the first abutting surface is used for abutting against the long-end plane, and the second abutting surface is used for abutting against the short-end plane, so that axial positioning of the bushing is achieved; and the number of the anti-rotation clamping points is at least two, and the two anti-rotation clamping points are located on the two sides of the circumferential direction of the first abutting face and abut against the first arc face, so that circumferential positioning of the lining is achieved, and the beneficial effect that the positioning precision of the lining is improved is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of engine component assembly, in particular to a bush positioning device. BACKGROUND

[0002] The connecting rod is a force-bearing moving part connected with the piston of an engine and should have sufficient strength under the reciprocating action in the cylinder, therefore, the bush embedded in the small head inner hole of the connecting rod needs to be durable and reliable.

[0003] In the prior art, the assembly of the bush and the connecting rod is usually realized by press-fitting, and the main process is as follows: the connecting rod is fixed on the base of the equipment main body, then the bush is fixed by using a clamp, and the clamp and the bush are driven to move downward synchronously to press-fit the bush into the small head inner hole of the connecting rod. The existing clamp usually comprises a clamp assembly and a press rod assembly, wherein the press rod assembly is mainly used for positioning the bush, and the clamp assembly is mainly used for fixing the bush, and the two cooperate with each other to realize the positioning and fixing of the bush.

[0004] In the use process of the existing clamp, the bush is prone to inaccurate positioning, thereby affecting the press-fitting effect of the bush and the connecting rod. SUMMARY

[0005] The technical problem to be solved by the utility model is to overcome the defects in the prior art, thereby providing a bush positioning device.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] A bush positioning device for positioning a bush, the bush comprising a long end plane, a short end plane, and a first arc surface connecting the long end plane and the short end plane, comprising a first abutting surface, a second abutting surface, and an anti-rotation clamping point.

[0008] The first abutting surface is used for abutting against the long end plane, and the second abutting surface is used for abutting against the short end plane to realize the axial positioning of the bush.

[0009] The anti-rotation clamping point is provided with at least two, and the two anti-rotation clamping points are located on the two sides of the circumference of the first abutting surface and abut against the first arc surface to realize the circumferential positioning of the bush.

[0010] Preferably, it further comprises a press block seat and an adjustable press plate assembly installed on the press block seat.

[0011] The first abutting surface and the anti-rotation clamping point are arranged at the lower end of the press block seat.

[0012] The second abutting surface is arranged at the lower end of the adjustable press plate assembly.

[0013] Preferably, the lower end of the pressing block seat is provided with an upper groove, and the upper end face of the upper groove forms the first abutting face;

[0014] The upper groove is formed with arc-shaped blocks on the circumferential two sides, and the anti-rotation clamping points are formed on the second arc surfaces of the arc-shaped blocks.

[0015] Preferably, the adjustable pressing plate assembly comprises an adjusting pressing plate, an adjusting groove and a first fixing bolt.

[0016] The adjusting groove is arranged on the adjusting pressing plate.

[0017] When the first fixing bolt is screwed with the adjusting groove, the large end of the first fixing bolt abuts against the inner wall face of the adjusting groove, so as to fix the adjusting pressing plate and the pressing block seat.

[0018] Preferably, the adjustable pressing plate assembly further comprises a limiting groove.

[0019] The adjusting pressing plate is axially slidably arranged in the limiting groove, and the circumferential two sides of the adjusting pressing plate abut against the inner wall of the limiting groove.

[0020] Preferably, the adjustable pressing plate assembly further comprises a second fixing bolt and a buffer block.

[0021] The second fixing bolt fixedly connects the buffer block and the pressing block seat.

[0022] One end of the buffer block abuts against the upper end face of the limiting groove, and the other end abuts against the upper end face of the adjusting pressing plate.

[0023] Preferably, the upper end of the adjusting pressing plate is formed with a first inclined face, and the lower end of the buffer block is formed with a second inclined face.

[0024] The first inclined face abuts against the second inclined face.

[0025] An adjusting interval is formed between the side wall of the buffer block and the side wall of the limiting groove.

[0026] Compared with the prior art, the utility model has the beneficial effects that:

[0027] The bushing positioning device provided by the above scheme can realize axial positioning of the bushing through the first abutting face and the second abutting face, can realize circumferential positioning of the bushing through the anti-rotation clamping points arranged on the circumferential two sides of the first abutting face, and can increase the positioning accuracy of the bushing. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the description of the specific embodiments or the prior art. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0029] Figure 1 The structural schematic diagram of one of the examples provided by the present application.

[0030] Figure 2 The structural schematic diagram of one of the examples provided by the present application. Figure 1 The structural schematic diagram from another perspective.

[0031] Figure 3 The structural schematic diagram of one of the examples provided by the present application. Figure 1 The structural schematic diagram of one of the examples provided by the present application.

[0032] Figure 4 The structural schematic diagram of one of the examples provided by the present application. Figure 1 The structural schematic diagram of one of the examples provided by the present application.

[0033] Figure 5 The structural schematic diagram of one of the examples provided by the present application. Figure 1 The sectional view of one of the examples provided by the present application.

[0034] Figure 6 The structural schematic diagram of one of the examples provided by the present application. Figure 5 The structural schematic diagram of one of the examples provided by the present application.

[0035] Explanation of reference signs:

[0036] 100, bushing; 101, long end plane; 102, short end plane; 103, first arc surface; 200, clamp assembly; 1, first abutting surface; 2, second abutting surface; 3, anti-rotation clamping point; 4, pressing block seat; 41, upper groove opening; 42, arc block; 421, second arc surface; 5, adjustable pressing plate assembly; 51, adjusting pressing plate; 52, adjusting groove; 53, first fixing bolt; 54, limiting groove; 55, second fixing bolt; 56, buffer block; 6, first inclined surface; 7, second inclined surface; 8, adjusting spacing. DETAILED DESCRIPTION

[0037] The technical solutions of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0038] In the description of the utility model, it is necessary to explain that, the orientation or position relation indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0039] In the description of the utility model, it is necessary to explain that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0040] Referring to Figures 1 to 6 The utility model embodiment provides a bush positioning device for positioning bush 100, which can realize the positioning and fixing of bush 100 in cooperation with clamp assembly 200. Wherein, bush 100 includes long end plane 101, short end plane 102 and first arc surface 103 connecting long end plane 101 and short end plane 102.

[0041] Specifically, in the embodiment, the bush positioning device includes first abutting surface 1, second abutting surface 2 and anti-rotation clamping point 3, first abutting surface 1 is used for abutting with long end plane 101, second abutting surface 2 is used for abutting with short end plane 102 to realize the axial positioning of bush 100, and anti-rotation clamping point 3 is provided with at least two, and two anti-rotation clamping points 3 are located on the circumferential two sides of first abutting surface 1 and abut with first arc surface 103 to realize the circumferential positioning of bush 100.

[0042] It is not difficult to understand that in the above scheme, the axial positioning of bush 100 can be realized through the setting of first abutting surface 1 and second abutting surface 2, at the same time, the circumferential positioning of bush 100 can be realized through the anti-rotation clamping point 3 arranged on the circumferential two sides of first abutting surface 1, and then the positioning accuracy of bush 100 can be increased.

[0043] Since the short end size of different batches of bush 100 can not be the same, referring to Figures 1 to 6In order to adapt to different batches of bushings 100, in the embodiment, the bushing positioning device further comprises a pressing block seat 4 and an adjustable pressing plate assembly 5 mounted on the pressing block seat 4. The first abutting surface 1 and the anti-rotation clamping point 3 are arranged at the lower end of the pressing block seat 4, and the second abutting surface 2 is arranged at the lower end of the adjustable pressing plate assembly 5.

[0044] Specifically, the upper recessed notch 41 is arranged at the lower end of the pressing block seat 4, the upper end face of the upper recessed notch 41 forms the first abutting surface 1, and the arc-shaped blocks 42 are arranged at the circumferential two sides of the upper recessed notch 41. The anti-rotation clamping point 3 is arranged on the second arc surface 421 of the arc-shaped block 42. It can be understood that the anti-rotation clamping point 3 is the abutting point of the first arc surface 103 and the second arc surface 421.

[0045] Further, the first abutting surface 1 abuts the middle segment position of the long end plane 101 and extends along the circumference, and the second abutting surface 2 abuts the middle segment position of the short end plane 102 and extends along the circumference, so that the bushing 100 is more uniformly stressed about the central axis.

[0046] Specifically, the adjustable pressing plate assembly 5 comprises an adjusting pressing plate 51, an adjusting groove 52 and a first fixing bolt 53. The adjusting groove 52 is arranged on the adjusting pressing plate 51. When the first fixing bolt 53 is screwed with the pressing block seat 4 through the adjusting groove 52, the large end of the first fixing bolt 53 abuts the inner wall surface of the adjusting groove 52 to fix the adjusting pressing plate 51 and the pressing block seat 4.

[0047] Further, the adjustable pressing plate assembly 5 further comprises a limiting groove 54. The adjusting pressing plate 51 is axially slidably arranged in the limiting groove 54, and the circumferential two sides of the adjusting pressing plate 51 abut the inner walls of the limiting groove 54 to limit the circumferential movement of the adjusting pressing plate 51.

[0048] Referring to Figures 1 to 6 In order to avoid the movement of the adjusting pressing plate 51 when it is impacted, the adjustable pressing plate assembly 5 further comprises a second fixing bolt 55 and a buffer block 56. The second fixing bolt 55 fixedly connects the buffer block 56 and the pressing block seat 4. One end of the buffer block 56 abuts the upper end face of the limiting groove 54, and the other end abuts the upper end face of the adjusting pressing plate 51.

[0049] Further, the upper end of the adjusting pressing plate 51 forms a first inclined surface 6, and the lower end of the buffer block 56 forms a second inclined surface 7. The first inclined surface 6 abuts the second inclined surface 7. The side wall of the buffer block 56 and the side wall of the limiting groove 54 form an adjusting spacing 8 therebetween.

[0050] It can be understood that when the adjustable pressing plate assembly 5 needs to be adjusted, the position of the adjusting pressing plate 51 can be first adjusted in the axial direction. When the adjusting pressing plate 51 is adjusted to a preset position, the first fixing bolt 53 is used to fix the adjusting pressing plate 51 and the pressing block seat 4. The second fixing bolt 55 is used to fix the buffer block 56, and the first inclined surface 6 and the second inclined surface 7 abut each other.

[0051] The above embodiments are only preferred embodiments of the present application, and cannot be used to limit the scope of protection of the present application. Any non-essential changes and substitutions made by those skilled in the art on the basis of the present application belong to the scope of protection required by the present application.

Claims

1. A bushing positioning device for positioning a bushing (100), the bushing (100) comprising a long end plane (101), a short end plane (102), and a first arc surface (103) connecting the long end plane (101) and the short end plane (102), characterized in that, It comprises a first abutting surface (1), a second abutting surface (2) and an anti-rotation clamping point (3); The first abutting surface (1) is used for abutting with the long end plane (101), and the second abutting surface (2) is used for abutting with the short end plane (102), so as to realize the axial positioning of the bushing (100); The anti-rotation clamping point (3) is provided at least with two, and the two anti-rotation clamping points (3) are located on the circumferential two sides of the first abutting surface (1) and abut with the first arc surface (103), so as to realize the circumferential positioning of the bushing (100).

2. A bushing positioning device according to claim 1, wherein It also comprises a pressing block seat (4) and an adjustable pressing plate assembly (5) installed on the pressing block seat (4); The first abutting surface (1) and the anti-rotation clamping point (3) are arranged at the lower end of the pressing block seat (4); The second abutting surface (2) is arranged at the lower end of the adjustable pressing plate assembly (5).

3. A bushing positioning device according to claim 2, wherein, The lower end of the pressing block seat (4) is provided with an upper groove opening (41), and the upper end face of the upper groove opening (41) forms the first abutting surface (1); The circumferential two sides of the upper groove opening (41) form an arc block (42), and the anti-rotation clamping point (3) is formed on the second arc surface (421) of the arc block (42).

4. A bushing positioning device according to claim 2, wherein, The adjustable pressing plate assembly (5) comprises an adjusting pressing plate (51), an adjusting groove (52) and a first fixing bolt (53); The adjusting groove (52) is arranged on the adjusting pressing plate (51); When the first fixing bolt (53) penetrates the adjusting groove (52) and is threadedly connected with the pressing block seat (4), the large end of the first fixing bolt (53) abuts with the inner wall surface of the adjusting groove (52), so as to fix the adjusting pressing plate (51) and the pressing block seat (4).

5. A bushing positioning device according to claim 4, wherein, The adjustable pressing plate assembly (5) further comprises a limiting groove (54); The adjusting pressing plate (51) is axially slidably installed in the limiting groove (54), and the circumferential two sides of the adjusting pressing plate (51) abut with the inner wall of the limiting groove (54).

6. A bushing positioning device according to claim 5, wherein, The adjustable pressing plate assembly (5) further comprises a second fixing bolt (55) and a buffer block (56); The second fixing bolt (55) fixedly connects the buffer block (56) and the pressing block seat (4); One end of the buffer block (56) abuts with the upper end face of the limiting groove (54), and the other end abuts with the upper end face of the adjusting pressing plate (51).

7. A bushing positioning device according to claim 6, wherein, The upper end of the adjusting pressing plate (51) forms a first inclined surface (6), and the lower end of the buffer block (56) forms a second inclined surface (7); The first inclined surface (6) abuts with the second inclined surface (7); An adjusting spacing (8) is formed between the side wall of the buffer block (56) and the side wall of the limiting groove (54).

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