Balance block for crankshaft machining

Abstract

The utility model belongs to the technical field of crankshaft balance blocks, and particularly relates to a balance block for crankshaft machining, which comprises a crankshaft body, a balance bump is fixedly mounted at the top of the crankshaft body, a first balance block is arranged on the surface of the balance bump, a second balance block is arranged on the surface of the first balance block, and the second balance block is arranged on the surface of the second balance block. A replacing mechanism is arranged on the surface of the balance protruding block and comprises a connecting groove, the connecting groove is formed in the surface of the balance protruding block, and a connecting block is fixedly installed on the inner side of the first balance block; by arranging the replacement mechanism, quick replacement of the first balance block and the second balance block can be achieved, a user rotates a positioning rod, threaded connection to a positioning groove is canceled through the positioning rod, and extrusion of a trapezoidal block to a triangular block can be canceled under the counter-acting force of a first spring and a second spring; therefore, separation of the first balance block, the second balance block and the balance protruding block is achieved, and replacement time is shortened.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of crankshaft balance weight, specifically a kind of balance weight for crankshaft machining. BACKGROUND

[0002] Crankshaft needs to reach dynamic balance to eliminate or reduce the vibration and noise generated when high-speed rotating when, assemble balance weight on crankshaft, so that crankshaft reaches balance when running, crankshaft balance weight except considering so that crankshaft reaches balance when running, still need to consider the weight, gravity and other factors of crankshaft balance weight itself, to reduce the energy consumption of power when crankshaft runs.

[0003] The installation mode of the crankshaft balance weight is usually directly integrated with the crank, or the balance weight is separately manufactured and then fastened on the crank with screws. In order to facilitate the replacement of the balance block parts by the user, screws are usually used for position fixing. When replacing the worn parts of the balance block, the screws need to be rotated repeatedly, which reduces the replacement rate and increases the replacement time. SUMMARY

[0004] In order to make up for the shortcomings of the prior art, to facilitate the replacement of the balance block parts by the user, screws are usually used for position fixing. When replacing the worn parts of the balance block, the screws need to be rotated repeatedly, which reduces the replacement rate and increases the replacement time. The utility model provides a balance block for crankshaft machining.

[0005] The utility model solves the technical scheme that it adopts: a kind of balance block for crankshaft machining, including crankshaft body, the top of the crankshaft body is fixedly installed with balance protrusion, the surface of the balance protrusion is provided with first balance block, the surface of the first balance block is provided with second balance block, the surface of the balance protrusion is provided with replacement mechanism;

[0006] The replacement mechanism includes a connecting groove, the connecting groove is provided on the surface of the balance protrusion, the inner side of the first balance block is fixedly installed with a connecting block, the top of the balance protrusion and the connecting block are provided with a positioning groove, the inner cavity of the positioning groove is threadedly connected with a positioning rod, a sliding groove is formed in the first balance block, the inner cavity of the sliding groove and the inner cavity of the connecting groove are interconnected, a trapezoidal block is slidably connected in the inner cavity of the sliding groove, the trapezoidal block is fixedly installed with an extrusion plate on one side, one end of the extrusion plate penetrates into the inner cavity of the connecting groove, a butt joint groove is formed in the surface of the first balance block, a butt joint block is fixedly installed in the inner side of the second balance block, a butt joint hole is formed in the surface of the butt joint block, a fixing rod is slidably connected in the inner cavity of the sliding groove, one end of the fixing rod penetrates into the inner cavity of the butt joint hole, a triangular block is fixedly installed at one end of the positioning rod, and the triangular block is in contact with the inclined surface of the trapezoidal block.

[0007] Preferably, the surface of the positioning rod is sleeved with a first spring, one end of the first spring is fixedly connected with the inner wall of the sliding groove, and the other end of the first spring is fixedly connected with the top of the triangular block.

[0008] Preferably, the inner cavity of the sliding groove is provided with a guide groove, and the bottom of the extrusion plate is fixedly installed with a guide block, and the surface of the guide block is slidably connected with the inner cavity of the guide groove.

[0009] Preferably, the inner cavity of the guide groove is provided with a second spring, one end of the second spring is fixedly connected with the inner wall of the guide groove, and the other end of the second spring is fixedly connected with the surface of the guide block.

[0010] Preferably, the surface of the balance protrusion is provided with a limiting hole, the inner side of the first balance block is fixedly installed with a limiting block, and the surface of the limiting block is slidably connected with the inner cavity of the limiting hole.

[0011] Preferably, the inner wall of the sliding groove is provided with a limiting groove, and the side of the triangular block is fixedly installed with a limiting block, and the surface of the limiting block is slidably connected with the inner cavity of the limiting groove.

[0012] Preferably, the surface of the first balance block is provided with a fixed groove, the inner side of the second balance block is fixedly installed with a positioning block, and the surface of the positioning block is slidably connected with the inner cavity of the fixed groove.

[0013] The utility model discloses the beneficial effect lies in:

[0014] The utility model discloses a replace mechanism, can realize the quick replacement of first balance block and second balance block, and the user rotates the positioning rod, cancels the thread connection of positioning groove through the positioning rod, can make the trapezoidal block cancel the extrusion of triangular block under the reaction force of first spring and second spring, and then realizes the separation of first balance block, second balance block and balance protrusion, reduces the replacement time. ACCURACY

[0015] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will briefly introduce the drawing needed to be used in the embodiment or prior art description, and obviously, the drawing in the following description is only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0016] Figure 1 It is the whole structure schematic diagram of the utility model;

[0017] Figure 2The structural exploded view of the first balance block, the second balance block and the balance protrusion of the utility model;

[0018] Figure 3 The structural section view of the first balance block of the utility model;

[0019] Figure 4 The structural schematic view of the second balance block of the utility model;

[0020] Figure 5 The structural schematic view of the first balance block of the utility model.

[0021] In the figure: 1, crankshaft body;2, balance protrusion;3, first balance block;4, second balance block;5, replacement mechanism;501, connecting groove;502, connecting block;503, positioning groove;504, positioning rod;505, sliding groove;506, trapezoidal block;507, extrusion plate;508, triangular block;509, butt joint groove;510, butt joint block;511, butt joint hole;512, fixed rod;6, first spring;7, guide groove;8, guide block;9, second spring;10, limiting hole;11, limiting block;12, limiting groove;13, limiting block;14, fixed groove;15, positioning block. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] The following will be combined with the drawings of the embodiments of the utility model to describe the technical solutions in the embodiments of the utility model clearly and completely. Figures 1-5 The present application will be further described in detail,

[0024] The embodiments of the present application disclose a balance block for crankshaft machining. Referring to Figures 1 to 4 A balance block for crankshaft machining, comprising a crankshaft body 1, a balance protrusion 2 is fixedly installed on the top of the crankshaft body 1, a first balance block 3 is arranged on the surface of the balance protrusion 2, a second balance block 4 is arranged on the surface of the first balance block 3, and a replacement mechanism 5 is arranged on the surface of the balance protrusion 2;

[0025] The replacement mechanism 5 comprises a connecting groove 501 formed in the surface of the balance protrusion 2, the inner side of the first balance block 3 is fixedly provided with a connecting block 502, the top of the balance protrusion 2 and the connecting block 502 are both provided with a positioning groove 503, the inner cavity of the positioning groove 503 is threadedly connected with a positioning rod 504, the inner side of the first balance block 3 is provided with a sliding groove 505, the inner cavity of the sliding groove 505 and the inner cavity of the connecting groove 501 are mutually penetrated, the inner cavity of the sliding groove 505 is slidably connected with a trapezoidal block 506, one side of the trapezoidal block 506 is fixedly provided with an extrusion plate 507, one end of the extrusion plate 507 penetrates into the inner cavity of the connecting groove 501, the surface of the first balance block 3 is provided with a butt joint groove 509, the inner side of the second balance block 4 is fixedly provided with a butt joint block 510, the surface of the butt joint block 510 is provided with a butt joint hole 511, the inner cavity of the sliding groove 505 is slidably connected with a fixing rod 512, one end of the fixing rod 512 penetrates into the inner cavity of the butt joint hole 511, one end of the positioning rod 504 is fixedly provided with a triangular block 508, the triangular block 508 is in contact with the inclined surface of the trapezoidal block 506.

[0026] With reference to Figure 3 The surface of the positioning rod 504 is sleeved with a first spring 6, one end of the first spring 6 is fixedly connected with the inner wall of the sliding groove 505, the other end of the first spring 6 is fixedly connected with the top of the triangular block 508, by arranging the first spring 6, when the trapezoidal block 506 cancels the extrusion on the triangular block 508, under the reaction force of the first spring 6, the triangular block 508 can be pushed to move in the opposite direction, so that the fixing rod 512 can move out of the inner cavity of the butt joint hole 511, and the separation of the first balance block 3 and the second balance block 4 is completed.

[0027] With reference to Figure 3 The inner cavity of the sliding groove 505 is provided with a guide groove 7, the bottom of the extrusion plate 507 is fixedly provided with a guide block 8, the surface of the guide block 8 is slidably connected with the inner cavity of the guide groove 7, by the sliding connection of the guide groove 7 and the guide block 8, the movement of the extrusion plate 507 can be guided, so that the extrusion plate 507 can keep moving horizontally.

[0028] With reference to Figure 3 The inner cavity of the guide groove 7 is provided with a second spring 9, one end of the second spring 9 is fixedly connected with the inner wall of the guide groove 7, the other end of the second spring 9 is fixedly connected with the surface of the guide block 8, by arranging the second spring 9, when the positioning rod 504 extrudes the extrusion plate 507, the second spring 9 can be in an extended state, when the extrusion on the extrusion plate 507 is cancelled, under the reaction force of the second spring 9, the trapezoidal block 506 can be automatically reset, and the automatic separation of the first balance block 3 and the second balance block 4 is realized.

[0029] With reference to Figure 2 and Figure 3The surface of the balance protrusion 2 is provided with a limiting hole 10, the inner side of the first balance block 3 is fixedly provided with a limiting block 11, the surface of the limiting block 11 is in sliding connection with the inner cavity of the limiting hole 10, through the sliding connection of the limiting hole 10 and the limiting block 11, the contact area between the first balance block 3 and the balance protrusion 2 can be increased, and the stability of the first balance block 3 during temporary fixing is increased.

[0030] With reference to Figure 3 The inner wall of the sliding groove 505 is provided with a limiting groove 12, one side of the triangular block 508 is fixedly provided with a limiting block 13, the surface of the limiting block 13 is in sliding connection with the inner cavity of the limiting groove 12, through the sliding connection of the limiting block 13 and the limiting groove 12, the movement of the triangular block 508 can be guided, and the triangular block 508 can be kept vertical and move up and down.

[0031] With reference to Figure 2 、 Figure 4 and Figure 5 The surface of the first balance block 3 is provided with a fixed groove 14, the inner side of the second balance block 4 is fixedly provided with a positioning block 15, the surface of the positioning block 15 is in sliding connection with the inner cavity of the fixed groove 14, the contact area between the second balance block 4 and the first balance block 3 can be increased, and the stability of the second balance block 4 during temporary fixing is further increased.

[0032] Working principle: when the first balance block 3 and the second balance block 4 are installed, the connecting block 502 enters the inner cavity of the connecting groove 501, the first balance block 3 can be preliminarily fixed, at the same time, the butt joint block 510 enters the inner cavity of the butt joint groove 509, the position of the second balance block 4 can be temporarily fixed, and the positioning rod 504 is rotated to enter the positioning groove 503, the position of the first balance block 3 is fixed, at the same time, when the positioning rod 504 enters the inner cavity of the positioning groove 503, the extrusion plate 507 is extruded, the trapezoidal block 506 is extruded by the extrusion plate 507, the fixed rod 512 is pushed into the inner cavity of the butt joint groove 509 and the inner cavity of the butt joint hole 511, and the position of the second balance block 4 is fixed, so that the installation of the first balance block 3 and the second balance block 4 is realized, when the first balance block 3 and the second balance block 4 are worn out, the positioning rod 504 is rotated to cancel the threaded connection with the positioning groove 503, under the reaction force of the first spring 6 and the second spring 9, the first balance block 3, the second balance block 4 and the balance protrusion 2 can be separated, and the user can conveniently replace them.

[0033] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A counterweight for crankshaft machining, characterized by: Including the crankshaft body (1), the top of the crankshaft body (1) is fixedly installed with a balance protrusion (2), the surface of the balance protrusion (2) is provided with a first balance block (3), the surface of the first balance block (3) is provided with a second balance block (4), and the surface of the balance protrusion (2) is provided with a replacement mechanism (5); The replacement mechanism (5) comprises a connecting groove (501) formed in the surface of the balance protrusion (2), a connecting block (502) fixedly installed on the inner side of the first balance block (3), a positioning groove (503) formed in the top of the balance protrusion (2) and the connecting block (502), a positioning rod (504) threadedly connected in the inner cavity of the positioning groove (503), a sliding groove (505) formed in the first balance block (3), the inner cavities of the sliding groove (505) and the connecting groove (501) being interconnected, a trapezoidal block (506) slidably connected in the inner cavity of the sliding groove (505), an extrusion plate (507) fixedly installed on one side of the trapezoidal block (506), one end of the extrusion plate (507) penetrating into the inner cavity of the connecting groove (501), a butt joint groove (509) formed in the surface of the first balance block (3), a butt joint block (510) fixedly installed on the inner side of the second balance block (4), a butt joint hole (511) formed in the surface of the butt joint block (510), a fixing rod (512) slidably connected in the inner cavity of the sliding groove (505), one end of the fixing rod (512) penetrating into the inner cavity of the butt joint hole (511), and a triangular block (508) fixedly installed on one end of the positioning rod (504) and in contact with the inclined surface of the trapezoidal block (506).

2. A counterweight for crankshaft machining according to claim 1, characterized in that: A first spring (6) is sleeved on the surface of the positioning rod (504), one end of the first spring (6) is fixedly connected with the inner wall of the sliding groove (505), and the other end of the first spring (6) is fixedly connected with the top of the triangular block (508).

3. The counterweight for crankshaft machining according to claim 1, characterized in that: A guide groove (7) is formed in the inner cavity of the sliding groove (505), and a guide block (8) is fixedly installed on the bottom of the extrusion plate (507) and slidably connected with the inner cavity of the guide groove (7).

4. A counterweight for a crankshaft as defined in claim 3, wherein: A second spring (9) is arranged in the inner cavity of the guide groove (7), one end of the second spring (9) is fixedly connected with the inner wall of the guide groove (7), and the other end of the second spring (9) is fixedly connected with the surface of the guide block (8).

5. The counterweight for crankshaft machining of claim 1, wherein: A limiting hole (10) is formed in the surface of the balance protrusion (2), and a limiting block (11) is fixedly installed on the inner side of the first balance block (3) and slidably connected with the inner cavity of the limiting hole (10).

6. The counterweight for crankshaft machining of claim 1, wherein: A limiting groove (12) is formed in the inner wall of the sliding groove (505), a limiting block (13) is fixedly installed on one side of the triangular block (508) and slidably connected with the inner cavity of the limiting groove (12).

7. The counterweight for crankshaft machining of claim 1, wherein: The surface of the first balance block (3) is provided with a fixing groove (14), and the inner side of the second balance block (4) is fixedly provided with a positioning block (15), and the surface of the positioning block (15) is in sliding connection with the inner cavity of the fixing groove (14).

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