Flexible positioning device for engine connecting rod

Abstract

The engine connecting rod flexible positioning device is characterized in that the engine connecting rod flexible positioning device comprises a bottom plate, placing platforms, a floating pressing device and a connecting rod, the placing platforms comprise the first placing platform and the second placing platform, and the connecting rod is arranged in the middle of the upper end face of the first placing platform and the upper end face of the second placing platform; the floating pressing device comprises a large-head floating pressing device and a small-head floating pressing device, the large-head floating pressing device is arranged at one end of the bottom plate, and the small-head floating pressing device is arranged at the upper end of the bottom plate and is close to one side of the second placing platform; the device has the advantages of being simple in structure, high in disassembly and assembly efficiency, low in positioning requirement, high in flexibility and the like, the trouble of workers is solved, the production cost is reduced, and therefore the production benefit is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of connecting rod positioning, in particular to a flexible positioning device for an engine connecting rod. Background Technique

[0002] The connecting rod group consists of a connecting rod body, a connecting rod big end cap, a connecting rod small end bushing, a connecting rod big end bearing shell and connecting rod bolts (or screws), etc. The connecting rod group bears the gas acting force transmitted by the piston pin, its own swing and the reciprocating inertia force of the piston group. The magnitudes and directions of these forces are periodically changing. Therefore, the connecting rod is subjected to alternating loads such as compression and tension.

[0003] The engine connecting rod is an indispensable key component in industrial engines, and its processing technology is relatively numerous. Therefore, it has disadvantages such as complex structure, low working efficiency, and low flexibility. There must be a flexible positioning device in the automatic processing equipment that can not only meet automatic feeding but also meet various processing requirements, which brings great troubles to the staff during the process of processing and positioning the engine connecting rod. Content of the Utility Model

[0004] The purpose of the utility model is to provide a flexible positioning device for an engine connecting rod to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions;

[0006] An engine connecting rod flexible positioning device, characterized in that it includes a bottom plate, a placement platform, a floating pressing device and a connecting rod. The placement platform includes a first placement platform and a second placement platform. The connecting rod is centrally arranged on the upper end surfaces of the first placement platform and the second placement platform. The floating pressing device includes a big-end floating pressing device and a small-end floating pressing device. The big-end floating pressing device is arranged at one end of the bottom plate, and the small-end floating pressing device is arranged on the upper end of the bottom plate, close to one side of the second placement platform. The big-end floating pressing device includes a pressing head, a first push rod and a first spring. Two first cavities are symmetrically opened on the side surface of the base. The first spring is sleeved outside the first push rod and is arranged in the cavity together to form an elastic connection. A first support is fixedly connected to the front end of the first placement platform. A first hinge shaft is arranged in the first support. The pressing head is hinged to the first support through the first hinge shaft. The pressing head is of a T-shaped structure, in which the straight end is matched with the first push rod, and a protrusion perpendicular to it is opened at the other end. The protrusion is pressed against one end of the connecting rod. The small-end floating pressing device includes a pressure rod, a second push rod and a second spring. A second cavity is opened on the upper end surface of the base. The second push rod is sleeved inside the second spring and is arranged in the second cavity together to form an elastic connection. A second support is installed on one side of the second placement platform. The second support and the pressure rod are hinged through a second hinge shaft. Two protrusions are opened at the lower end of the pressure rod. One of the protrusions is hinged to the second support, and the second protrusion is matched with the second push rod.

[0007] Preferably, limits are installed on both sides of the second placement platform. The limits are L-shaped and are symmetrically installed on both sides of one end of the connecting rod respectively.

[0008] Preferably, an operating handle is installed behind the bottom plate.

[0009] Preferably, two positioning holes are opened on the upper end surface of the bottom plate. The positioning holes are arranged diagonally, and tooling positioning pins are arranged in the holes.

[0010] Preferably, the end face of the pressure rod in contact with the connecting rod is formed into a V-shaped structure.

[0011] Compared with the prior art, the beneficial effects of the present invention are: by installing a big-end floating pressing device and a small-end floating pressing device on the bottom plate, the connecting rod is more firmly installed on the bottom plate. This device not only has a simple structure, but also has a high disassembly and assembly efficiency, and has the advantages of low positioning requirements and high flexibility, solving the troubles of workers, reducing production costs, and thus increasing production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is the front view of an engine connecting rod flexible positioning device of the present invention;

[0013] Figure 2 Top view of a flexible positioning device for an engine connecting rod according to the present utility model;

[0014] Figure 3 Left view of a flexible positioning device for an engine connecting rod according to the present utility model;

[0015] Figure 4 Stereogram of a flexible positioning device for an engine connecting rod according to the present utility model.

[0016] In the figure: 1, bottom plate; 2, first placement platform; 3, second placement platform; 4, small-end floating pressing device; 5, big-end floating pressing device; 6, limit; 7, connecting rod; 8, tooling positioning pin; 9, operation handle; 401, pressing head; 402, second push rod; 403, second spring; 404, second support; 405, second hinge shaft; 501, pressing rod; 502, first push rod; 503, first spring; 504, first support; 505, first hinge shaft. Specific implementation mode

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present utility model.

[0018] In addition, if the detailed description of the known technology is not necessary for showing the features of the present utility model, it will be omitted. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component.

[0019] Please refer to Figure 1 — Figure 4, a flexible positioning device for an engine connecting rod 7, comprising a bottom plate 1, a placement platform, a floating pressing device, and a connecting rod 7. The bottom plate 1 has a special-shaped structure, which is convenient for installing the connecting rod 7. At the same time, a weight-reducing opening and a positioning hole are provided to facilitate the staff to fix the bottom plate 1 on the corresponding work station. The placement platform includes a first placement platform 2 and a second placement platform 3, which are fixed on the upper end surface of the base and are used for placing the connecting rod 7. The connecting rod 7 has a big end and a small end. The big end is placed on the upper end of the second placement platform 3, and the small end is placed on the upper end surface of the first flat platform. In order to enable the connecting rod 7 to be stable on the upper end surfaces of the first placement platform 2 and the second placement platform 3, floating pressing devices are installed at both ends of the connecting rod 7, namely a big-end floating pressing device 5 and a small-end floating pressing device 4. The big-end floating pressing device 5 is installed at one end of the bottom plate 1 and includes a pressing head 401, a first push rod 502, and a first spring 503. Two first cavities are symmetrically opened on the end surface of the bottom plate 1, and the opening direction is consistent with the length direction of the ground. The first spring 503 and the first push rod 502 are sequentially installed in the first cavity. The two ends of the first push rod 502 have different diameters. The thinner end is sleeved inside the first spring 503, and the thicker end is matched with the pressing head 401 to form an elastic connection. A first support 504 is vertically installed in the center of the front end of the first placement platform 2. A first hinge shaft 505 is arranged inside the first support 504. The pressing head 401 is hinged to the first support 504 through the first hinge shaft 505. The pressing head 401 has a T-shaped structure. One end is a flat end, and its end surface is matched with the first push rod 502. A protrusion perpendicular to it is opened on the other end, and the protrusion is pressed against one end of the connecting rod 7, so as to fix the connecting rod 7 on the upper end surface of the placement platform. Limiters 6 are symmetrically installed on both sides of the second placement platform 3. The limiters 6 are L-shaped and are respectively installed on both sides of the big end of the connecting rod 7, with the opening facing outwards, so as to realize the pressing and fixing of the big end of the connecting rod 7. The two limiters 6 only play the function of roughly limiting the side of the connecting rod 7 and do not contact the connecting rod 7 to prevent the position deviation of the connecting rod 7 from being too large.

[0020] The small-head floating pressing device 4 is installed on the upper end surface of the bottom plate 1 and is located on the side of the second placement platform 3 away from the first placement platform 2. The small-head floating pressing device 4 includes a pressure rod 501, a second push column 402, and a second spring 403. A second cavity is vertically opened on the upper end surface of the base. The second push column 402 is sleeved inside the second spring 403 and is installed in the second cavity together to form an elastic connection. A second support 404 is installed between the second placement platform 3 and the second cavity. A second hinge shaft 405 is installed on the second support 404. Two protrusions are provided at the lower end of the second pressure rod 501. One of the protrusions is hinged to the second support 404 via the second hinge shaft 405, and the second protrusion cooperates with the second push column 402 so that the spring thrust of the second spring 403 presses the small head of the connecting rod 7 through the hinge of the second support 404. The end surface of the pressure rod 501 in contact with the connecting rod 7 is formed into a V-shaped structure, so as to increase the contact area and make the extrusion more firm.

[0021] An operating handle 9 is installed behind the bottom plate 1 for easy movement. Two positioning holes are opened on the upper end surface of the bottom plate 1, and the positioning holes are arranged diagonally. Tooling positioning pins 8 are arranged in the holes, so that the bottom plate 1 can be stably fixed at a specified position.

[0022] It should also be noted that unless otherwise clearly specified and limited, the terms "set" and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. In addition, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0023] Please refer to Figure 4, The working principle of the present utility model: First, fix the bottom plate 1 to the designated position through the tooling positioning pin 8. Push the lower end of the pressure bar 501, so that the first push column 502 squeezes the first spring 503 and moves inward, while the other end of the pressure bar 501 tilts up. At the same time, press down the pressing head 401, so that one end of the pressing head 401 squeezes the second spring 403 through the second push column 402, and the other end of the pressing head 401 tilts up. At this time, place the connecting rod 7 on the upper end surfaces of the first placement platform 2 and the second placement platform 3 through a manipulator or manually. The large end of the connecting rod 7 is installed on the upper end of the first placement platform 2 and is located between the two limiters 6, and the small end is placed on the upper end of the second placement platform 3. Release the pressing head 401 and the pressure bar 501, so that the first spring 503 and the second spring 403 push the first push column 502 and the second push column 402 in the opposite direction, so that the ends of the pressing head 401 and the pressure bar 501 in contact with the connecting rod 7 press the connecting rod 7, thereby realizing the fixation of the connecting rod 7 and performing subsequent processing. This device has a simple structure, not only improves work efficiency, has no high positioning requirements, but also has the advantages of high flexibility, is convenient for staff to disassemble and assemble, and solves the troubles of the staff.

[0024] Springs, positioning pins, etc. are all common standard parts or components known to those skilled in the art, and their structures and principles can all be learned by those skilled in the art through technical manuals or obtained through conventional experimental methods.

[0025] Taking the above ideal embodiment of the present utility model as an inspiration, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this utility model. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A flexible positioning device for an engine connecting rod, characterized in that It includes a bottom plate, a placement platform, a floating clamping device and a connecting rod, the placement platform includes a first placement platform and a second placement platform, the connecting rod is centrally arranged on the upper end surfaces of the first placement platform and the second placement platform, the floating clamping device includes a large-head floating clamping device and a small-head floating clamping device, the large-head floating clamping device is arranged at one end of the bottom plate, the small-head floating clamping device is arranged at the upper end of the bottom plate, close to the second placement platform, the large-head floating clamping device includes a clamping head, a first push column and a first spring, two first cavities are symmetrically opened on the side of the bottom plate, the first spring is sleeved on the outside of the first push column, and are arranged together in the cavity to form an elastic connection, the front end of the first placement platform is fixedly connected with a first support, A first hinge shaft is arranged in the first support, and the clamping head is hinged to the first support via the first hinge shaft. The clamping head is a T-shaped structure, wherein the straight end cooperates with the first push column, and the other end is provided with a protrusion perpendicular to it, and the protrusion is squeezed with one end of the connecting rod. The small-head floating clamping device includes a pressure rod, a second push column and a second spring. A second cavity is provided on the upper surface of the bottom plate, and the second push column is sleeved on the inner side of the second spring and arranged together in the second cavity to form an elastic connection. A second support is installed on one side of the second placing platform, and the second support is hinged to the pressure rod via the second hinge shaft. Two protrusions are provided at the lower end of the pressure rod, one of which is hinged to the second support, and the second protrusion cooperates with the second push column.

2. The engine connecting rod flexible positioning device according to claim 1, characterized in that The second placement platform is provided with limit stops on both sides, and the limit stops are L-shaped and symmetrically installed at the two side positions of one end of the connecting rod.

3. The engine connecting rod flexible positioning device according to claim 1, characterized in that An operating handle is installed at the rear of the base plate.

4. The engine connecting rod flexible positioning device according to claim 1, characterized in that The upper surface of the bottom plate is provided with two positioning holes, the positioning holes are arranged in diagonal positions, and tooling positioning pins are arranged in the holes.

5. The engine connecting rod flexible positioning device according to claim 1, characterized in that The end surface where the pressure rod contacts the connecting rod is formed into a V-shaped structure.

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