Crankcase positioning device

Abstract

The utility model provides a crankcase positioning device, which relates to the technical field of crankcase positioning and comprises a lower crankcase, an upper crankcase is mounted at the top of the lower crankcase, three first arc grooves are formed in the surface of each of the lower crankcase and the upper crankcase, caulking grooves are formed in the inner walls of the first arc grooves, and the caulking grooves are matched with the caulking grooves. And bearing bushes are embedded and fixed into the embedding grooves correspondingly, a crankshaft rod penetrates through the bearing bushes, arc plates are arranged at the top and the bottom of the crankshaft rod correspondingly, and the surface of the crankshaft rod is sleeved with and fixedly connected with a limiting ring. The crankshaft rod is placed on the bearing bush on the lower crankcase, meanwhile, the limiting ring can be embedded into the second arc groove in the arc plate, the effect that the crankshaft rod is prevented from deviating towards the two ends of the crankcase in the installation process can be achieved, meanwhile, the crankshaft rod is covered with the arc cover and fixed through the bolt, and the crankshaft rod is prevented from being damaged. And the effect of clamping and fixing the crankshaft rod can be achieved, so that the effect of preventing the crankshaft rod from being positioned in the mounting process can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of crankcase positioning, in particular to a crankcase positioning device. Background Art

[0002] The crankcase is a crucial component of an internal combustion engine, housing the crankshaft, pistons, and other related components. It not only supports and secures the components, but also provides lubrication and sealing.

[0003] During the installation of the crankshaft in the existing crankcase, the crankshaft will usually be offset, which can easily cause the fitting clearance between the crankshaft journal and the bearing to become uneven in local areas. Therefore, a crankcase positioning device is needed to solve the above problem. Utility Model Content

[0004] The purpose of the utility model is to solve the problem in the prior art that the crankshaft often deviates during the installation of the crankshaft, which easily causes the fitting clearance between the crankshaft journal and the bearing to become uneven in local areas, and to propose a crankcase positioning device.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a crankcase positioning device, comprising a lower crankcase, an upper crankcase is installed on the top of the lower crankcase, three first arc grooves are provided on the surfaces of the lower crankcase and the upper crankcase, the inner walls of the first arc grooves are provided with embedding grooves, bearing shells are embedded and fixed inside the embedding grooves, a crankshaft rod is passed through the interior of the bearing shell, arc plates are provided on the top and bottom of the crankshaft rod, a limiting ring is sleeved and fixedly connected to the surface of the crankshaft rod, a second arc groove is provided on the inner arc wall of the arc plate, the limiting ring is located inside the second arc groove, a bearing sleeve is sleeved on the surface of the crankshaft rod, an arc seat and an arc cover are provided below and above the bearing sleeve respectively, and bolts are installed at both ends of the arc seat and the arc cover.

[0006] Preferably, both ends of the bearing shell are penetrated and slidably connected with a positioning rod, the bottom of the positioning rod is fixedly connected to the lower crankcase, and the top of the positioning rod is grooved inside the upper crankcase and slidably connected thereto.

[0007] Preferably, two square grooves are provided inside the upper crankcase and the lower crankcase.

[0008] Preferably, the inner walls of the lower crankcase and the upper crankcase are symmetrically fixedly connected with first support columns, and both ends of the arc plate are fixedly connected to the first support columns.

[0009] Preferably, the edges of the lower crankcase and the upper crankcase are rounded.

[0010] Preferably, a second support column is fixedly connected to the bottom of the arc seat and near both ends, and the bottom of the second support column is fixedly connected to the lower crankcase.

[0011] Compared with the prior art, the advantages and positive effects of the present invention are:

[0012] In the present invention, the crankshaft rod is placed on the bearing shell on the lower crankcase, and the limit ring is embedded in the second arc groove in the arc plate, which can prevent the crankshaft rod from deviating toward the two ends of the crankcase during installation. At the same time, the arc cover is covered on the crankshaft rod and fixed with bolts, which can clamp and fix the crankshaft rod, thereby preventing the crankshaft rod from being positioned during installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a three-dimensional diagram of the overall structure of a crankcase positioning device proposed by the utility model;

[0014] Figure 2 This is a cross-sectional view of the overall structure of a crankcase positioning device proposed in the utility model;

[0015] Figure 3 This is a partial structural perspective diagram of a crankcase positioning device proposed by the utility model;

[0016] Figure 4 The present invention provides a three-dimensional internal view of the lower crankcase structure of a crankcase positioning device.

[0017] Legend: 1. Lower crankcase; 2. Upper crankcase; 3. First arc groove; 4. Embossed groove; 5. Bearing; 6. Positioning rod; 7. Crankshaft rod; 8. First support column; 9. Arc plate; 10. Second arc groove; 11. Limiting ring; 12. Arc seat; 13. Bearing sleeve; 14. Second support column; 15. Arc cover; 16. Bolt. DETAILED DESCRIPTION

[0018] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0020] Example 1, as Figure 1-4As shown, the utility model provides a crankcase positioning device, including a lower crankcase 1, an upper crankcase 2 is installed on the top of the lower crankcase 1, three first arc grooves 3 are provided on the surfaces of the lower crankcase 1 and the upper crankcase 2, the inner walls of the first arc grooves 3 are provided with embedding grooves 4, the interiors of the embedding grooves 4 are embedded and fixed with bearing shells 5, the interiors of the bearing shells 5 pass through the crankshaft rod 7, the top and bottom of the crankshaft rod 7 are provided with arc plates 9, the surface of the crankshaft rod 7 is sleeved and fixedly connected with a limiting ring 11, the inner arc walls of the arc plates 9 are provided with second arc grooves 10, the limiting ring 11 is located inside the second arc groove 10, the surface of the crankshaft rod 7 is sleeved with a bearing sleeve 13, the bottom and top of the bearing sleeve 13 are provided with an arc seat 12 and an arc cover 15 respectively, and bolts 16 are installed at both ends of the arc seat 12 and the arc cover 15.

[0021] The effect achieved by the entire embodiment 1 is that the upper crankcase 2 is installed on the top of the lower crankcase 1, and three first arc grooves 3 are opened on the surfaces of the lower crankcase 1 and the upper crankcase 2, and the inner walls of the first arc grooves 3 are opened. The inside of the embedding grooves 4 are embedded and fixed with bearing shells 5, and the inside of the bearing shells 5 is penetrated by the crankshaft rod 7, which can play the effect of embedding the crankshaft rod 7 into the bearing shells 5, and arc plates 9 are provided on the top and bottom of the crankshaft rod 7. The surface of the crankshaft rod 7 is sleeved and fixedly connected with a limiting ring 11, and the inner arc wall of the arc plate 9 is opened with a second arc groove 10. The limiting ring 11 is located inside the second arc groove 10, which can play the effect of embedding the limiting ring 11 into the second arc groove 10 to position the crankshaft rod 7, and a bearing sleeve 13 is sleeved on the surface of the crankshaft rod 7, and an arc seat 12 and an arc cover 15 are respectively provided below and above the bearing sleeve 13. Bolts 16 are installed at both ends of the arc seat 12 and the arc cover 15, which can play the effect of clamping and positioning the crankshaft rod 7.

[0022] Example 2, as Figure 1-4 As shown, both ends of the bearing 5 are penetrated and slidably connected with a positioning rod 6, the bottom of the positioning rod 6 is fixedly connected to the lower crankcase 1, and the top of the positioning rod 6 is embedded in the groove 4 inside the upper crankcase 2 and slidably connected thereto; two square grooves are provided inside the upper crankcase 2 and the upper crankcase 2; the inner walls of the lower crankcase 1 and the upper crankcase 2 are symmetrically fixedly connected with the first support column 8, and the two ends of the arc plate 9 are fixedly connected to the first support column 8; the edges of the lower crankcase 1 and the upper crankcase 2 are both rounded; the bottom of the arc seat 12 and near both ends are fixedly connected with a second support column 14, and the bottom of the second support column 14 is fixedly connected to the lower crankcase 1.

[0023] The effect achieved by the entire embodiment 2 is that a positioning rod 6 is passed through and slidably connected at both ends of the bearing shell 5, the bottom of the positioning rod 6 is fixedly connected to the lower crankcase 1, and the top of the positioning rod 6 is embedded in the groove 4 inside the upper crankcase 2 and slidably connected therewith, which can play the effect of positioning the upper crankcase 2 and the upper crankcase 2 when they are merged; two square grooves are provided in the interior of the upper crankcase 2 and the upper crankcase 2, which can play the effect of shaping the upper crankcase 2 and the upper crankcase 2; the first support column 8 is symmetrically fixedly connected to the inner wall of the lower crankcase 1 and the upper crankcase 2, and the two ends of the arc plate 9 are fixedly connected to the first support column 8, which can play the effect of fixing the arc plate 9; the edges of the lower crankcase 1 and the upper crankcase 2 are rounded, which can prevent sharp corners from hurting people; a second support column 14 is fixedly connected through the bottom of the arc seat 12 and near both ends, and the bottom of the second support column 14 is fixedly connected to the lower crankcase 1, which can play the effect of supporting and fixing the arc seat 12.

[0024] Working principle: By placing the crankshaft rod 7 on the bearing shell 5 on the lower crankcase 1, the limiting ring 11 will be embedded in the second arc groove 10 in the arc plate 9, and the bearing sleeve 13 will be embedded in the arc seat 12, and the arc cover 15 will cover the arc seat 12 and be fixed by bolts 16, which can clamp and fix the crankshaft rod 7, thereby preventing the crankshaft rod 7 from being positioned during the installation process. At this time, the upper crankcase 2 is installed on the lower crankcase 1, and the positioning rod 6 will pass through the bearing shell 5 on the upper crankcase 2 and be embedded in the upper crankcase 2. At this time, the second arc groove 10 on the surface of the arc plate 9 on the upper crankcase 2 will be mounted on the limiting ring 11, which can prevent the crankshaft rod 7 from deviating to the two ends of the crankcase during the installation process.

[0025] The wiring diagram of the lower crankcase 1, the upper crankcase 2 and the bearing sleeve 13 in the present invention is common knowledge in the field, and its working principle is a well-known technology. The model is selected according to the actual use. Therefore, the control method and wiring arrangement of the lower crankcase 1, the upper crankcase 2 and the bearing sleeve 13 are not explained in detail.

[0026] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A crankcase positioning device, comprising a lower crankcase (1), characterized in that: An upper crankcase (2) is installed on the top of the lower crankcase (1), and three first arc grooves (3) are provided on the surfaces of the lower crankcase (1) and the upper crankcase (2), and an embedding groove (4) is provided on the inner wall of each of the first arc grooves (3), and a bearing bush (5) is embedded and fixed inside the embedding groove (4), and a crankshaft rod (7) is passed through the inside of the bearing bush (5), and an arc plate (9) is provided on the top and bottom of the crankshaft rod (7), and a limiting ring (11) is sleeved on the surface of the crankshaft rod (7) and fixedly connected, and a second arc groove (10) is provided on the inner arc wall of the arc plate (9), and the limiting ring (11) is located inside the second arc groove (10), and a bearing sleeve (13) is sleeved on the surface of the crankshaft rod (7), and an arc seat (12) and an arc cover (15) are provided below and above the bearing sleeve (13), respectively, and bolts (16) are installed at both ends of the arc seat (12) and the arc cover (15).

2. A crankcase positioning device according to claim 1, characterized in that: Both ends of the bearing shell (5) are penetrated and slidably connected with a positioning rod (6), the bottom of the positioning rod (6) is fixedly connected to the lower crankcase (1), and the top of the positioning rod (6) is embedded in the groove (4) inside the upper crankcase (2) and slidably connected thereto.

3. The crankcase positioning device according to claim 1, characterized in that: The upper crankcase (2) and the interior of the upper crankcase (2) are both provided with two square grooves.

4. The crankcase positioning device according to claim 1, characterized in that: The inner walls of the lower crankcase (1) and the upper crankcase (2) are both symmetrically fixedly connected with first support columns (8), and both ends of the arc plate (9) are fixedly connected to the first support columns (8).

5. The crankcase positioning device according to claim 1, characterized in that: The edges of the lower crankcase (1) and the upper crankcase (2) are both rounded.

6. The crankcase positioning device according to claim 1, characterized in that: The bottom of the arc seat (12) and near both ends are fixedly connected to a second support column (14), and the bottom of the second support column (14) is fixedly connected to the lower crankcase (1).

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