A support device for an engine

Abstract

The utility model provides a support device for engine, including mounting seat body, installation base and set up in the support mechanism and rotation positioning mechanism of installation base, installation base with mounting seat body rotation connection, rotation positioning mechanism includes positioning lock subassembly, positioning lock subassembly connects between mounting seat body and installation base, positioning lock subassembly is used for forming the rotation and locking operation of installation base around mounting seat body, rotation positioning mechanism with support mechanism adjacent setting, the utility model provides a support device for engine when facing multiple models of engine support, can carry out multi -freedom degree adjustment support, realizes the support frock of one -key type rotation positioning function, and the operation is convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of equipment technology that can be used in conjunction with AGV equipment for flexible production, and specifically to a support device for an engine. Background Technology

[0002] As is well known, in the field of modern production and transportation equipment, with the continuous advancement of technology and the increasing demands for application performance, flexible production equipment is becoming increasingly favored by enterprises. For example, when assembling, testing, or repairing motorcycle engines, common engine support fixtures are mostly fixed or only have simple lifting functions. Existing fixtures use V-blocks or fixed brackets to support the engine, and their support position and height are inconvenient to adjust, making them unsuitable for different engine models. Some improved fixtures, although adding adjustable support rods to achieve height adjustment through multiple positioning holes on the support rods, or using grooves on the base for coarse horizontal adjustment, still have limitations. While technological improvements have been made, limitations remain. The adjustment is limited to a single direction (e.g., height), making precise positioning of the support point in three-dimensional space impossible. Furthermore, the use of pins and multiple positioning holes restricts the adjustment range, resulting in discontinuous and inaccurate adjustments. The complex locking mechanism further complicates adjustment. Moreover, it only provides support functionality, lacking rotation capabilities, leading to time-consuming and labor-intensive operation. When working on different parts of the engine's circumference, manual labor to move the engine or the use of an additional turntable is required, causing process interruptions and impacting production efficiency. Therefore, an integrated support fixture is needed that allows for multi-degree-of-freedom adjustment of the support for various engine models, enabling one-click rotation and positioning. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a support device that is easy to adjust in multiple directions, can be quickly adapted to various motorcycle engines, and can be easily rotated and positioned to adapt to different working surfaces.

[0004] To solve the above-mentioned technical problems, this utility model provides a support device for an engine, including a mounting body, a mounting base, and a support mechanism and a rotation positioning mechanism disposed on the mounting base. The mounting base is rotatably connected to the mounting body. The rotation positioning mechanism includes a positioning lock assembly connected between the mounting body and the mounting base. The positioning lock assembly is used to form a rotation and locking operation of the mounting base around the mounting body. The rotation positioning mechanism is disposed adjacent to the support mechanism. The support mechanism includes a first support component, a second support component, a support base body, and a sliding connecting seat. The first support component and the second support component are disposed around the support base body. The first support component is slidably connected to the sliding connecting seat. The first support component provides adjustment support in a first position around the support base body, and the second support component provides adjustment support in a second position toward the support base body.

[0005] Preferably, the support base body is fixedly connected to the middle position of the mounting base, and the support base body is connected and fixed to the mounting base through a connecting cylinder. The mounting base is a rectangular mounting base.

[0006] Preferably, the first support assembly includes a slide body and a telescopic support column. The sliding connecting seat includes a guide rail slider. The slide body is slidably connected to the guide rail slider through a connecting slider. A sliding locking handle is provided on the connecting slider. The telescopic support column is connected to one end of the slide body through a support base plate. An engine support seat is connected to the telescopic support column.

[0007] Preferably, a rectangular groove space is formed on the surface of the slide body, the telescopic support column is slidably connected to the groove space, a base plate locking handle is provided on the support base plate, the telescopic support column includes a telescopic outer shell and an internal support body, a locking handle is provided on the telescopic outer shell, one end of a guide rod is connected to the bottom of the telescopic support column, and the other end of the guide rod is connected to the other end of the slide body through a connecting piece, the guide rod is used to guide the telescopic support column to reciprocate on the slide body towards the support base.

[0008] Preferably, the guide rail sliders are respectively provided with a first guide rail slider, a second guide rail slider, and a third guide rail slider; the slide body is provided with a first slide body, a second slide body, and a third slide body; the telescopic support column is provided with a first telescopic support column, a second telescopic support column, and a third telescopic support column; the first guide rail slider, the second guide rail slider, and the third guide rail slider are respectively located at three adjacent side positions close to the support base body; the first slide body, the second slide body, and the third slide body are respectively slidably connected to the first guide rail slider, the second guide rail slider, and the third guide rail slider; and the first telescopic support column, the second telescopic support column, and the third telescopic support column are also respectively connected to the first slide body, the second slide body, and the third slide body.

[0009] Preferably, the engine support base is provided with a disc support base and an L-shaped support body. There are two disc support bases, each of which is connected to the first telescopic support column and the third telescopic support column respectively. The L-shaped support body is connected to the second telescopic support column.

[0010] Preferably, the second support component includes a sliding groove connecting seat and a telescopic connecting column. The sliding groove connecting seat is fixedly connected to the fourth side of the support base body and is correspondingly arranged with the second sliding groove body. The telescopic connecting column is slidably connected to the sliding groove connecting seat and is connected to an L-shaped support connecting seat, which corresponds to the L-shaped support body.

[0011] Preferably, the positioning lock assembly includes a connecting elastic element, a plunger pin locking seat, a positioning plunger pin, and a positioning plate. One end of the positioning plunger pin is connected to the plunger pin locking seat, and the other end is connected to the positioning hole on the positioning plate. The positioning plate is connected to the mounting base.

[0012] Preferably, the rotary positioning mechanism further includes a foot pedal, which includes a main connecting rod and pedals connected to both ends of the main connecting rod. A positioning connecting plate is connected to the pedal at one end of the main connecting rod. One side of the positioning connecting plate is connected to the back of the pedal at one end, and the other side of the positioning connecting plate is connected to the plunger pin connecting cap. The bottom of the plunger pin connecting cap is connected to the plunger pin locking seat. An elastic element is connected inside the plunger pin locking seat, and the positioning plunger pin is connected to the elastic element.

[0013] Preferably, the elastic element is a metal spring, and the positioning plunger pin is provided with a protruding connecting part, which is located at the lower part of the positioning plunger pin and is integrally formed and connected with the positioning plunger pin.

[0014] The beneficial effects of this utility model are as follows: This utility model provides a support device for an engine, which includes a mounting base, a support mechanism, and a rotation positioning mechanism. The mounting base is rotatably connected to the mounting body. The rotation positioning mechanism includes a positioning lock assembly connected between the mounting body and the mounting base. The positioning lock assembly is used to form a rotation and locking operation of the mounting base around the mounting body. The support mechanism includes a first support assembly and a second support assembly. The first support assembly is slidably connected to the sliding connection body. The first support assembly can move and adjust the support in three dimensions around the support base body. The second support assembly can move and adjust the support in two dimensions toward the support base body. The support device for engines provided by this utility model can perform multi-degree-of-freedom adjustment support when facing various models of engine support, so as to realize a support fixture with one-button rotation positioning function, which is convenient to operate and use. Attached Figure Description

[0015] The above and other objects, features, and advantages of this invention will become clearer through a more detailed description of the preferred embodiments shown in the accompanying drawings. The same reference numerals indicate the same parts throughout the drawings, and the drawings are not intentionally drawn to scale with actual dimensions; the focus is on illustrating the gist of this invention.

[0016] Figure 1 This is a plan view of the support device for an engine according to the present invention;

[0017] Figure 2 This is a split view of part A of the support device for an engine according to this utility model;

[0018] Figure 3 This is another schematic diagram of the support device for the engine according to this utility model.

[0019] In the diagram: 1. Mounting base; 2. Mounting base; 21. First support assembly; 22. Second support assembly; 23. Slide body; 231. First slide body; 232. Second slide body; 233. Third slide body; 24. Telescopic support column; 240. Telescopic outer shell; 241. First telescopic support column; 242. Second telescopic support column; 243. Third telescopic support column; 25. Base plate locking handle; 26. Guide rod; 3. Rotary positioning mechanism; 31. Elastic element; 32. Plunger pin locking seat; 33. Positioning plunger pin; 34. Positioning plate; 35. Positioning hole; 36. Main connecting rod; 37. Pedal; 4. Support base body; 5. Sliding connecting seat; 51. Guide rail slider; 52. First guide rail slider; 53. Second guide rail slider; 54. Third guide rail slider; 6. Sliding locking handle; 7. Locking handle; 8. L-shaped support seat; 9. L-shaped support connecting seat; 10. Circular disc support seat. Detailed Implementation

[0020] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand this utility model and implement it. However, the embodiments are not intended to limit this utility model. In this embodiment, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, unless otherwise specified in this specific embodiment, the connection or fixing method between components can be achieved by bolt fixing, welding fixing, or pin fixing, etc., which are commonly used in the prior art. Therefore, they will not be described in detail in this embodiment.

[0021] like Figure 1-3 As shown, a preferred embodiment of this utility model provides a support device for an engine, including a mounting base 1, a mounting platform 2, and a support mechanism and a rotation positioning mechanism 3 disposed on the mounting platform 2. The mounting platform 2 is rotatably connected to the mounting base 1. The mounting platform 2 is a rotating platform, and the mounting platform 1 is a rotary support. The mounting platform 2 can be manually pushed to rotate around the mounting platform. The rotation positioning mechanism 3 includes a positioning lock assembly connected between the mounting base 1 and the mounting platform 2. The positioning lock assembly is used to form a rotation and locking operation of the mounting platform around the mounting platform. The rotation positioning mechanism 3 is disposed adjacent to the support mechanism. When it is necessary to perform operations on different parts of the circumference of various engine models, a support operation must be performed first. The support mechanism includes a first support component 21, a second support component 22, a support base body 4, and a sliding connecting seat. 5. The first support assembly 21 and the second support assembly 22 are arranged around the support base body 4. The first support assembly 21 is slidably connected to the sliding connecting seat. The first support assembly 21 provides adjustment support in the first position around the support base body. The first support assembly 21 moves back and forth on the sliding connecting seat, which is equivalent to providing adjustment in the horizontal X and Y axes. The first support assembly 21 is arranged adjacent to the three sides of the support base body, which is equivalent to providing support adjustment in the first position in the front and left and right of the support base body 4. The second support assembly 22 provides adjustment support in the second position towards the support base body. The second support assembly 22 is arranged on one side of the support base body 4, which is equivalent to providing support adjustment in the front-back and up-down directions in the second position of the support base body 4, so as to perform circumferential assembly, inspection or maintenance work on the engine.

[0022] like Figure 1-3As shown, in a further preferred embodiment, the support base body 4 is fixedly connected to the middle position of the mounting base. The support base body 4 is connected and fixed to the mounting base 2 through the connecting cylinder 41. The support base body 4 is installed and connected to the middle position of the mounting base 2, and the connection is stable. The mounting base 2 is a rectangular mounting base, or it can be a square mounting base. The support base body 4 is also a regular quadrilateral support base body 4. The first support component 21 and the second support component 22 arranged around the periphery form a multi-degree-of-freedom adjustment, and the support point is accurately positioned in three-dimensional space.

[0023] As shown in the figure Figure 1-3 As shown, in a further preferred embodiment, the first support component 21 includes a slide body 23 and a telescopic support column 24. The sliding connecting seat 5 includes a guide rail slider 51. The slide body 23 is slidably connected to the guide rail slider 51. The slide body 23 is slidably connected to the guide rail slider 51 through a connecting slider. A sliding locking handle 6 is provided on the connecting slider. When the slide body is adjusted to a suitable position, the sliding locking handle 6 can be operated to temporarily lock the slide body 23. The telescopic support column 24 is connected to one end of the slide body through a support base plate. An engine support seat is connected to the telescopic support column 24. The engine support seat is a support plate seat used to support the engine. It is connected to the telescopic support column 24 and can be adjusted in height and in the vertical direction to match the support of various engine models.

[0024] like Figure 1-3 As shown, in a preferred embodiment, a rectangular slot space is formed on the surface of the slide body 23. The telescopic support column 24 is slidably connected to the slot space. A base plate locking handle 25 is provided on the support base plate. After manually pushing the telescopic support column 24 to a suitable position, the base plate locking handle 25 is operated to press down and lock it. The telescopic support column 24 includes a telescopic outer shell 240 and an internal support body. A locking handle 7 is provided on the telescopic outer shell 240. After adjusting the telescopic support column 24 to a suitable rising or falling distance, the locking handle 7 can be operated to temporarily lock the telescopic support column 24. One end of the guide rod 26 is connected to the bottom of the telescopic support column 24. The other end of the guide rod 26 is connected to the other end of the slide body 23 through a connecting piece. The guide rod 26 is used to guide the telescopic support column 24 to reciprocate close to the support base on the slide body 23. The telescopic support column 24 moves back and forth in the slot space. When the guide rod 26 guides the movement of the telescopic support column, it can also ensure the smooth movement and strengthen the connection structure of the telescopic support column in the slide body.

[0025] like Figure 1-3As shown, in a preferred embodiment, the guide rail slider 51 is respectively provided with a first guide rail slider 52, a second guide rail slider 53, and a third guide rail slider 54; the slide groove 23 is provided with a first slide groove 231, a second slide groove 232, and a third slide groove 233; the telescopic support column is provided with a first telescopic support column 241, a second telescopic support column 242, and a third telescopic support column 243; the first guide rail slider 52, the second guide rail slider 53, and the third guide rail slider 54 are respectively located at three adjacent side positions near the support base body, and are sequentially distributed on the upper, left, and right three orientation surfaces of the support base body; the first slide groove 231, the second slide groove 232, and the third slide groove 243 are also provided with a first telescopic support column 241, a second telescopic support column 242, and a third telescopic support column 243. 33 are respectively slidably connected to the first guide rail slider 52, the second guide rail slider 53, and the third guide rail slider 54. That is, the first telescopic support column 241, the second telescopic support column 242, and the third telescopic support column 243 are also respectively connected to the first slide body 231, the second slide body 232, and the third slide body 233. The three slide bodies can move left and right on their respective guide rail sliders, and the three telescopic support columns can move back and forth on their respective slide bodies. The engine support seat can also be adjusted up and down on the telescopic support columns. It can move and adjust freely in three directions, and perform multi-degree-of-freedom support adjustment to adapt to various engine support models.

[0026] like Figure 1-3 As shown, in a preferred embodiment, the engine support base is provided with a disc support base 10 and an L-shaped support base body 8. There are two disc support bases 10, each disc support base 10 is connected to the first telescopic support column and the third telescopic support column respectively. It can be configured to be rotatably connected to the corresponding telescopic support column and arranged opposite to each other. The L-shaped support base body 8 is connected to the second telescopic support column. The L-shaped support base body 8 and the disc support base are provided to adapt to the support points on the engine, so that the support is stable.

[0027] like Figure 1-3 As shown, in a preferred embodiment, the second support component 22 includes a sliding groove connecting seat 27 and a telescopic connecting column 28. The sliding groove connecting seat 27 is fixedly connected to the fourth side of the support base body 4 and is correspondingly arranged with the second sliding groove body 232. The telescopic connecting column 28 is slidably connected to the sliding groove connecting seat. An L-shaped support connecting seat 9 is connected to the telescopic connecting column 28. The L-shaped support connecting seat 9 corresponds to the L-shaped support seat body 8, forming a support fulcrum around the support base body 4, which facilitates subsequent assembly, maintenance and other operations of the engine.

[0028] like Figure 1-3As shown, in a preferred embodiment, the positioning lock assembly includes a connecting elastic element 31, a plunger pin locking seat 32, a positioning plunger pin 33, and a positioning plate 34. One end of the positioning plunger pin 33 is connected to the plunger pin locking seat 32, and the other end is connected to the positioning hole on the positioning plate 34. The other end of the positioning plunger pin 33 is movably inserted into the positioning hole 35 on the positioning plate. The positioning plate 34 is also provided with connecting screw holes or other fixing holes for connection. The positioning plate is connected to the mounting base, that is, the surface of the slewing support.

[0029] like Figure 1-3 As shown, in a further preferred embodiment, the rotary positioning mechanism further includes a foot pedal, which includes a main connecting rod 36 and pedals 37 connected to both ends of the main connecting rod. A positioning connecting plate 11 is connected to the pedal at one end of the main connecting rod 36. One side of the positioning connecting plate 11 is connected to the back of the pedal at one end, and the other side of the positioning connecting plate 11 is connected to the plunger pin connecting cap 12. The bottom of the plunger pin connecting cap 12 is connected to the plunger pin locking seat 32. An elastic element 31 is connected inside the plunger pin locking seat, and the positioning plunger pin 33 is connected to the elastic element 31. When the operator uses their foot... When the pedal is pressed, the positioning plunger pin 33 is lifted and disengaged from the positioning hole on the positioning plate. Rotating it unlocks the mechanism. The engine or rotating platform (mounting base 2) is then gently pushed manually. The entire upper structure (the guide rail slider, slide body, and engine on the mounting base 2) will rotate smoothly around the mounting body (slewing support), rotating the engine to the required working angle. Under the pressure of the spring, the positioning pin automatically falls back and inserts into the new positioning hole, achieving precise circumferential positioning and locking. In other embodiments, the positioning plate can also be customized with positioning holes according to the needs of the machining surface and machining angle.

[0030] like Figure 1-3 As shown, in a further preferred embodiment, the elastic element 31 is a metal spring, and the positioning plunger pin 33 is provided with a protruding connecting part 331. The protruding connecting part 331 is located at the lower part of the positioning plunger pin 33 and is integrally formed and connected with the positioning plunger pin. The protruding connecting part is just used to abut against the ring position connected to the other end of the spring, and the structure is flexible.

[0031] The specific implementation of this utility model is as follows: When assembling, testing or repairing motorcycle engines of different models, spatial positioning is performed first, and then the engine is operated. After the engine is positioned, when operating the other side of the engine, the operator uses his foot to apply pressure to the pedal. At this time, the positioning plunger pin in the positioning lock assembly is lifted and disengaged from the positioning hole on the positioning plate. Then, the engine is rotated to unlock. The operator gently pushes the engine or rotating platform, and the entire upper structure (including the guide rail slider, slide body and engine) will rotate smoothly around the rotary support. After the engine is rotated to the required working angle, the positioning plunger pin automatically falls back under the pressure of the spring and inserts into the new positioning hole, achieving precise circumferential positioning and locking. At the same time, the positioning plate can be customized with positioning holes according to the needs of the processing surface and processing angle.

[0032] Loosen the horizontal and vertical locking handles. Based on the support point position of the target engine, adjust the position of the slide rail connecting seat on the guide rail slider in the four directions (X-axis) and the position of the longitudinal slide rail connecting seat of the telescopic support column (Y-axis). Adjust the height of the telescopic support column (Z-axis) so that the four support points reach the predetermined height. Tighten all locking handle devices to complete the spatial positioning adaptation of the engine.

[0033] The engine support device provided by this utility model can be used with AGV to achieve flexible production. The mounting base can be fixed to the assembly line floor with anchor bolts or directly integrated into an AGV (Automated Guided Vehicle). The latter makes the tooling a mobile assembly station, and the engine can move between different workstations to achieve flexible production of "assembly as delivery", which makes the application scenarios of this engine support device more extensive.

[0034] The beneficial effects of this utility model are as follows: This utility model provides a support device for an engine, which includes a mounting base, a support mechanism, and a rotation positioning mechanism. The mounting base is rotatably connected to the mounting body. The rotation positioning mechanism includes a positioning lock assembly connected between the mounting body and the mounting base. The positioning lock assembly is used to form a rotation and locking operation of the mounting base around the mounting body. The support mechanism includes a first support assembly and a second support assembly. The first support assembly is slidably connected to the sliding connection body. The first support assembly can move and adjust the support in three dimensions around the support base body. The second support assembly can move and adjust the support in two dimensions toward the support base body. The support device for engines provided by this utility model can perform multi-degree-of-freedom adjustment support when facing various models of engine support, so as to realize a support fixture with one-button rotation positioning function, which is convenient to operate and use.

[0035] In the description of this specification, the references to terms such as "preferred embodiment," "another embodiment," "other embodiment," or "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0036] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A support device for an engine, characterized in that: The device includes a mounting body, a mounting base, and a support mechanism and a rotation positioning mechanism disposed on the mounting base. The mounting base is rotatably connected to the mounting body. The rotation positioning mechanism includes a positioning lock assembly connected between the mounting body and the mounting base. The positioning lock assembly is used to enable rotation and locking of the mounting base around the mounting body. The rotation positioning mechanism is disposed adjacent to the support mechanism. The support mechanism includes a first support component, a second support component, a support base body, and a sliding connecting seat. The first support component and the second support component are disposed around the support base body. The first support component is slidably connected to the sliding connecting seat. The first support component provides adjustment support in a first position around the support base body, and the second support component provides adjustment support in a second position towards the support base body.

2. The support device for an engine as described in claim 1, characterized in that, The support base body is fixedly connected to the middle position of the mounting base. The support base body is connected and fixed to the mounting base through a connecting cylinder. The mounting base is a rectangular mounting base.

3. The support device for an engine as described in claim 1, characterized in that, The first support assembly includes a sliding groove and a telescopic support column. The sliding connecting seat includes a guide rail slider. The sliding groove is slidably connected to the guide rail slider through a connecting slider. A sliding locking handle is provided on the connecting slider. The telescopic support column is connected to one end of the sliding groove through a support base plate. An engine support seat is connected to the telescopic support column.

4. The support device for an engine as described in claim 3, characterized in that, A rectangular groove space is formed on the surface of the slide body. The telescopic support column is slidably connected to the groove space. A base plate locking handle is provided on the support base plate. The telescopic support column includes a telescopic outer shell and an internal support body. A locking handle is provided on the telescopic outer shell. One end of a guide rod is connected to the bottom of the telescopic support column. The other end of the guide rod is connected to the other end of the slide body through a connecting piece. The guide rod is used to guide the telescopic support column to reciprocate on the slide body towards the support base.

5. The support device for an engine as described in claim 3, characterized in that, The guide rail sliders are respectively provided with a first guide rail slider, a second guide rail slider, and a third guide rail slider. The slide body is provided with a first slide body, a second slide body, and a third slide body. The telescopic support column is provided with a first telescopic support column, a second telescopic support column, and a third telescopic support column. The first guide rail slider, the second guide rail slider, and the third guide rail slider are respectively located at three adjacent side positions close to the support base body. The first slide body, the second slide body, and the third slide body are respectively slidably connected to the first guide rail slider, the second guide rail slider, and the third guide rail slider. The first telescopic support column, the second telescopic support column, and the third telescopic support column are also respectively connected to the first slide body, the second slide body, and the third slide body.

6. The support device for an engine as described in claim 3, characterized in that, The engine support base is provided with a disc support base and an L-shaped support body. There are two disc support bases, each of which is connected to the first telescopic support column and the third telescopic support column. The L-shaped support body is connected to the second telescopic support column.

7. The support device for an engine as described in claim 1, characterized in that, The second support component includes a sliding groove connecting seat and a telescopic connecting column. The sliding groove connecting seat is fixedly connected to the fourth side of the support base body and is correspondingly arranged with the second sliding groove body. The telescopic connecting column is slidably connected to the sliding groove connecting seat. An L-shaped support connecting seat is connected to the telescopic connecting column, and the L-shaped support connecting seat corresponds to the L-shaped support body.

8. The support device for an engine as described in claim 1, characterized in that, The positioning lock assembly includes a connecting elastic element, a plunger pin locking seat, a positioning plunger pin, and a positioning plate. One end of the positioning plunger pin is connected to the plunger pin locking seat, and the other end is connected to the positioning hole on the positioning plate. The positioning plate is connected to the mounting base.

9. The support device for an engine as described in claim 1, characterized in that, The rotary positioning mechanism also includes a foot pedal, which includes a main connecting rod and pedals connected to both ends of the main connecting rod. A positioning connecting plate is connected to the pedal at one end of the main connecting rod. One side of the positioning connecting plate is connected to the back of the pedal at one end, and the other side of the positioning connecting plate is connected to the plunger pin connecting cap. The bottom of the plunger pin connecting cap is connected to the plunger pin locking seat. An elastic element is connected inside the plunger pin locking seat, and the positioning plunger pin is connected to the elastic element.

10. The support device for an engine as described in claim 8, characterized in that, The elastic element is a metal spring, and the positioning plunger pin has a protruding connecting part, which is located at the lower part of the positioning plunger pin and is integrally formed and connected with the positioning plunger pin.

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