A positioning and centering mechanism for the crankshaft of an automobile engine

Abstract

The utility model relates to the technical field of crankshaft positioning, and disclose a kind of automobile engine crankshaft positioning mechanism, including processing table, the inside of processing table is equipped with positioning hole, the inside of positioning hole is equipped with locating block one, the upper fixed mounting of locating block one has installation sleeve.The utility model is connected with slider one by sliding in the inside of sliding slot one, first, locating block one is inserted into the inside of positioning hole, at this time, since locating block one is hexagonal with positioning hole, and locating block one is positioned by positioning hole, so that locating block one keeps fixed, at this time, rotating lead screw one, makes lead screw one and connecting plate engage, so that connecting plate is driven by connecting rod to be adjusted in height by the sliding connection effect of slider one and sliding slot one, so that the position of positioning pin is adjusted, the effect of positioning crankshaft is realized, at this time, since the position of positioning pin has the effect of being adjusted, so that the effect of positioning crankshaft of different sizes can be realized.

Description

Technical Field

[0001] This utility model relates to the field of crankshaft positioning technology, and more specifically, to a crankshaft positioning and centering mechanism for an automobile engine. Background Technology

[0002] A crankshaft positioning and centering mechanism for automotive engines is a device or method used during engine assembly, repair, or machining to precisely fix the crankshaft in a specific angular position. Currently, most crankshaft machining processes use locating pins to position the crankshaft and keep it in a horizontal position. However, most existing locating pins are of fixed size, requiring different sized locating pins for crankshafts of different sizes, which increases the overall cost. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, this utility model provides a crankshaft positioning and centering mechanism for automobile engines, which has the advantage of being able to position crankshafts of different sizes.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a crankshaft positioning and centering mechanism for an automobile engine, comprising a processing table, a positioning hole inside the processing table, a positioning block inside the positioning hole, an mounting sleeve fixedly installed above the positioning block, a sliding groove inside the mounting sleeve, a slider slidably connected inside the sliding groove, a connecting rod fixedly installed on the outer side of the slider, a connecting plate fixedly installed on the inner side of the connecting rod, a support rod fixedly installed above the connecting plate, and a positioning pin fixedly installed above the support rod.

[0005] As a preferred embodiment of this utility model, a mounting post is fixedly installed at the bottom of the positioning block one. The mounting post passes through the inside of the processing table, and the bottom of the mounting post engages with a nut located at the bottom of the processing table.

[0006] As a preferred technical solution of this utility model, the mounting column is provided with a lead screw, which is located inside the mounting sleeve. The lead screw engages with the connecting plate, and a rotating rod is fixedly installed at the bottom of the lead screw. The lead screw is located at the bottom of the positioning pin.

[0007] As a preferred technical solution of this utility model, the positioning pin has a second groove inside, a second slider is slidably connected inside the second groove, and a second positioning block is fixedly installed above the second slider.

[0008] As a preferred embodiment of this utility model, a fixing block is fixedly installed on the outer side of the mounting sleeve, a motor is fixedly installed on the outer side of the fixing block, a lead screw is fixedly installed on the output end of the motor, and the outer side of the lead screw engages with the slider.

[0009] As a preferred technical solution of this utility model, the surface of the lead screw is provided with threads, and the threads are distributed in opposite directions with the center point of the positioning pin as the center. There are two sliders and two positioning blocks, and the two sliders engage with the threads in opposite directions respectively.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] 1. This utility model features a slider slidably connected inside a sliding groove, a connecting rod fixedly installed on the outside of the slider, a connecting plate fixedly installed on the inside of the connecting rod, a support rod fixedly installed above the connecting plate, and a positioning pin fixedly installed above the support rod. When positioning the crankshaft, the positioning block is first inserted into the positioning hole. Since the positioning block and the positioning hole are hexagonal and the positioning block is limited by the positioning hole, the positioning block remains fixed. Then, the lead screw is rotated to engage with the connecting plate, thereby adjusting the height of the connecting plate through the sliding connection between the slider and the sliding groove. This adjusts the position of the positioning pin, achieving the effect of positioning the crankshaft. Because the position of the positioning pin can be adjusted, crankshafts of different sizes can be positioned.

[0012] 2. This utility model features a second sliding groove inside the positioning pin, a second sliding block slidably connected inside the second sliding groove, and a second positioning block fixedly installed above the second sliding block. When the motor is started, the second lead screw rotates, and the second lead screw engages with the second sliding block, thereby adjusting the position of the second sliding block relative to the center point of the positioning pin. This allows the second positioning block to support the groove inside the crankshaft, limiting the crankshaft to a fixed position and achieving the effect of keeping the crankshaft fixed. At the same time, since the surface of the second positioning block is circular, when the crankshaft is rotated, it will collide with the surface of the second positioning block, thus effectively preventing the surface of the crankshaft from being scratched. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This utility model Figure 1 Enlarged schematic diagram of the structure at point A;

[0015] Figure 3 This is a schematic diagram of the positioning sleeve structure of this utility model;

[0016] Figure 4 This utility model Figure 3 Enlarged schematic diagram of the structure at point B;

[0017] Figure 5 This utility model Figure 3 A magnified schematic diagram of the structure at point C.

[0018] In the diagram: 1. Machining table; 2. Positioning hole; 3. Positioning block one; 4. Mounting sleeve; 5. Slide groove one; 6. Slider one; 7. Connecting rod; 8. Connecting plate; 9. Support rod; 10. Positioning pin; 11. Mounting column; 12. Nut; 13. Lead screw one; 14. Rotating rod; 15. Slide groove two; 16. Slider two; 17. Positioning block two; 18. Fixing block; 19. Motor; 20. Lead screw two. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figures 1 to 5 As shown, this utility model provides a crankshaft positioning and centering mechanism for an automobile engine, including a processing table 1. The processing table 1 has a positioning hole 2 inside, and a positioning block 3 is provided inside the positioning hole 2. An mounting sleeve 4 is fixedly installed above the positioning block 3. A sliding groove 5 is provided inside the mounting sleeve 4. A slider 6 is slidably connected inside the sliding groove 5. A connecting rod 7 is fixedly installed on the outside of the slider 6. A connecting plate 8 is fixedly installed on the inside of the connecting rod 7. A support rod 9 is fixedly installed above the connecting plate 8. A positioning pin 10 is fixedly installed above the support rod 9.

[0021] When the crankshaft needs to be positioned, the positioning block 3 is first inserted into the positioning hole 2. Since the positioning block 3 and the positioning hole 2 are hexagonal, and the positioning block 3 is limited by the positioning hole 2, the positioning block 3 is kept fixed. Then, the lead screw 13 is rotated to engage with the connecting plate 8, so that the connecting plate 8 is driven by the connecting rod 7 to adjust its height through the sliding connection between the slider 6 and the slide groove 5. This adjusts the position of the positioning pin 10, thus achieving the effect of positioning the crankshaft. Since the position of the positioning pin 10 can be adjusted, crankshafts of different sizes can be positioned.

[0022] Among them, the bottom of the positioning block 3 is fixedly installed with a mounting post 11, which passes through the inside of the processing table 1. The bottom of the mounting post 11 engages with the nut 12, which is located at the bottom of the processing table 1.

[0023] The mounting post 11 engages with the nut 12, thereby fixing the positioning block 3 inside the positioning hole 2, so that the positioning block 3 will not wobble up and down due to the shaking of the processing device.

[0024] The mounting column 11 is equipped with a lead screw 13 inside the mounting sleeve 4. The lead screw 13 engages with the connecting plate 8. A rotating rod 14 is fixedly installed at the bottom of the lead screw 13. The lead screw 13 is located at the bottom of the positioning pin 10.

[0025] When the height of the positioning pin 10 needs to be adjusted, the lead screw 13 is rotated by rotating the rotating rod 14 to engage with the connecting plate 8, which pushes the connecting plate 8 upward, thereby causing the positioning pin 10 to be moved upward by the support rod 9, thus achieving the effect of adjusting the height.

[0026] The positioning pin 10 has a groove 15 inside, a slider 16 is slidably connected inside the groove 15, and a positioning block 17 is fixedly installed above the slider 16.

[0027] When the motor 19 is started, the lead screw 20 rotates. At this time, the lead screw 20 engages with the slider 16, thereby adjusting the position of the slider 16 and the center point of the positioning pin 10. This allows the positioning block 17 to support the groove inside the crankshaft, limiting the crankshaft to a fixed position and achieving the effect of keeping the crankshaft fixed. At the same time, since the surface of the positioning block 17 is circular, when the crankshaft is rotated, it will collide with the surface of the positioning block 17, which can effectively prevent the surface of the crankshaft from being scratched.

[0028] Among them, a fixing block 18 is fixedly installed on the outer side of the mounting sleeve 4, a motor 19 is fixedly installed on the outer side of the fixing block 18, a lead screw 20 is fixedly installed on the output end of the motor 19, and the outer side of the lead screw 20 meshes with the slider 16.

[0029] When the motor 19 is started, it will drive the lead screw 20 to rotate. At this time, the lead screw 20 will mesh with the slider 16, thereby adjusting the position of the slider 16 and making the positioning block 17 fit and fix with the crankshaft.

[0030] Among them, the surface of the lead screw 20 is threaded, and the threads are distributed in opposite directions with the center point of the positioning pin 10 as the center. There are two sliders 26 and two positioning blocks 27. The two sliders 26 engage with the threads in opposite directions respectively.

[0031] When the lead screw 20 rotates, it will drive the two positioning blocks 2 17 to move simultaneously to the side away from the center point of the positioning pin 10, thereby achieving the effect of positioning and supporting crankshafts of different sizes.

[0032] Working principle and usage process of this utility model:

[0033] First, a slider 6 is slidably connected inside the slide groove 5. A connecting rod 7 is fixedly installed on the outside of the slider 6, and a connecting plate 8 is fixedly installed on the inside of the connecting rod 7. A support rod 9 is fixedly installed above the connecting plate 8, and a positioning pin 10 is fixedly installed above the support rod 9. When the crankshaft needs to be positioned, the positioning block 3 is first inserted into the positioning hole 2. Since the positioning block 3 and the positioning hole 2 are hexagonal, and the positioning block 3 is limited by the positioning hole 2, the positioning block 3 is kept fixed. Then, the lead screw 13 is rotated to engage with the connecting plate 8, so that the connecting plate 8 is driven by the connecting rod 7 to adjust its height through the sliding connection between the slider 6 and the slide groove 5. This adjusts the position of the positioning pin 10, thus achieving the effect of positioning the crankshaft. Since the position of the positioning pin 10 is adjusted, it can be used to position crankshafts of different sizes.

[0034] Secondly, a second groove 15 is provided inside the positioning pin 10, and a second slider 16 is slidably connected inside the second groove 15. A second positioning block 17 is fixedly installed above the second slider 16. When the motor 19 is started, the second lead screw 20 rotates. At this time, the second lead screw 20 will mesh with the second slider 16, thereby adjusting the position of the second slider 16 and the center point of the positioning pin 10. This allows the second positioning block 17 to support the groove inside the crankshaft, limiting the crankshaft to a fixed position and achieving the effect of keeping the crankshaft fixed.

[0035] Finally, since the surface of the second positioning block 17 is circular, when the crankshaft is rotated, it will collide with the surface of the second positioning block 17, which can effectively prevent the surface of the crankshaft from being scratched.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A crankshaft positioning and centering mechanism for an automobile engine, comprising a processing table (1), characterized in that: The processing table (1) has a positioning hole (2) inside, a positioning block (3) inside the positioning hole (2), an installation sleeve (4) fixedly installed above the positioning block (3), a sliding groove (5) inside the installation sleeve (4), a slider (6) slidably connected inside the sliding groove (5), a connecting rod (7) fixedly installed on the outside of the slider (6), a connecting plate (8) fixedly installed on the inside of the connecting rod (7), a support rod (9) fixedly installed above the connecting plate (8), and a positioning pin (10) fixedly installed above the support rod (9).

2. The crankshaft positioning and centering mechanism for an automobile engine according to claim 1, characterized in that: The bottom of the positioning block (3) is fixedly installed with a mounting post (11), which passes through the inside of the processing table (1). The bottom of the mounting post (11) engages with a nut (12), which is located at the bottom of the processing table (1).

3. The crankshaft positioning and centering mechanism for an automobile engine according to claim 2, characterized in that: The mounting column (11) is provided with a lead screw (13) inside. The lead screw (13) is located inside the mounting sleeve (4). The lead screw (13) meshes with the connecting plate (8). A rotating rod (14) is fixedly installed at the bottom of the lead screw (13). The lead screw (13) is located at the bottom of the positioning pin (10).

4. The crankshaft positioning and centering mechanism for an automobile engine according to claim 1, characterized in that: The positioning pin (10) has a sliding groove (15) inside, and a slider (16) is slidably connected inside the sliding groove (15). A positioning block (17) is fixedly installed above the slider (16).

5. The crankshaft positioning and centering mechanism for an automobile engine according to claim 4, characterized in that: A fixing block (18) is fixedly installed on the outside of the mounting sleeve (4), and a motor (19) is fixedly installed on the outside of the fixing block (18). A lead screw (20) is fixedly installed at the output end of the motor (19), and the outside of the lead screw (20) meshes with the slider (16).

6. The crankshaft positioning and centering mechanism for an automobile engine according to claim 5, characterized in that: The surface of the lead screw (20) is threaded, and the threads are distributed in opposite directions with the center point of the positioning pin (10) as the center. There are two sliders (16) and two positioning blocks (17). The two sliders (16) mesh with the threads in opposite directions respectively.

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