Engine assembly tray with quick change support

Abstract

The utility model discloses an engine combined mounting tray with quick change type support, including tray body, insert piece formula quick change support and main support positioning block, insert piece formula quick change support includes two interval arrangement's insert piece quick change support base and strip -shaped insert piece support board, the bottom of insert piece quick change support base is connected in tray body top, and the top is provided with horizontal support shaft, and the both ends of insert piece support board are provided with one arc recess of open bottom respectively, every arc recess can be clamped in corresponding support shaft top, and main support positioning block is connected in the top of insert piece support board and is connected. The engine combined mounting tray of this technical scheme is installed quick change type support component, when production task switches to different vehicle type, can quick change the support component suitable for new vehicle type, need not like existing technology and set up multiple spare support components on engine combined mounting tray, thereby simplifies the structure to reduce product weight greatly.

Description

Technical Field

[0001] This utility model relates to the field of automobile manufacturing technology, specifically to an engine assembly tray with quick-change support. Background Technology

[0002] Automotive assembly lines utilize engine assembly pallets, which are equipped with multiple support components. These components, topped with support positioning blocks, hold the engine and vehicle chassis in place for assembly. Current production lines commonly produce multiple vehicle models on the same line. Due to differences in structural dimensions, the positions and shapes of the support positioning blocks vary between models. Therefore, when switching production tasks, the support components need to be adjusted according to the model to be produced. Given the fast pace of automotive production, designing the support components on the engine assembly pallet with conventional bolt connections is impractical, as there is insufficient time to disassemble the bolts of existing support components and install new ones. Therefore, current technology typically uses multiple types of support components on a single engine assembly pallet, each designed to be foldable. When not in use, unused components are folded down for backup, leaving only the currently needed components. When switching is required, workers simply place the existing support components down and erect the required ones.

[0003] In developing this utility model, the inventors discovered that the existing technology has at least the following problems: While this design solves the problem of quick switching during application, it also results in very limited space on the automotive engine assembly pallet. The spare support components placed upside down on the pallet also affect the assembly operation space to some extent. Furthermore, the automotive engine assembly pallet becomes very heavy, placing high load requirements on the lifting mechanism. Therefore, how to simplify the automotive engine assembly pallet and reduce the product weight is a problem that needs to be solved. Utility Model Content

[0004] This utility model provides an engine assembly tray with quick-change support, or an engine assembly tray with plug-in support, to simplify the automotive engine assembly tray and reduce product weight.

[0005] To achieve the above objectives, this utility model provides an engine assembly tray with quick-change supports, including a tray body, a plurality of insert-type quick-change supports, and a main support positioning block; the insert-type quick-change supports include two spaced-apart insert-type quick-change support bases and a long strip-shaped insert-type support plate; the bottom of the insert-type quick-change support base is connected to the top of the tray body, and a horizontal support shaft is provided at the top of the insert-type quick-change support base; each end of the insert-type support plate is provided with an open-bottomed arc-shaped groove, and each arc-shaped groove can be engaged with the corresponding support shaft; the main support positioning block is detachably connected to the top of the insert-type support plate.

[0006] Furthermore, two clamp-shaped connecting plates are connected to both ends of the insert support plate, with arc-shaped grooves opened in the lower middle of the connecting plates, and the two connecting plates are respectively attached to the front and rear sides of the insert support plate; the two ends of the support shaft protrude from the front and rear sides of the insert quick-change support base.

[0007] Furthermore, the engine assembly tray with quick-change support also includes a locking mechanism, which includes a locking base and a locking buckle. The locking base is connected to the top of the tray body, the bottom of the locking buckle is hinged to the locking base, and the top of the locking buckle has a hook structure. A locking pin is provided in the middle of the insert support plate, and the two ends of the locking pin protrude from the front and rear sides of the insert support plate, respectively. When the arc-shaped groove is engaged with the support shaft, the hook structure can be locked above the locking pin.

[0008] Furthermore, the latch is also fixedly connected to a pressure plate, which is located on the side opposite to the hook structure; the locking mechanism also includes a compression spring, the bottom of which rests against the tray body and the top of which rests against the pressure plate below.

[0009] Furthermore, the locking mechanism also includes a rotating shaft; there are multiple latches, which are arranged along the axial direction of the rotating shaft, and all the latches are hinged to the latch base through the rotating shaft.

[0010] Furthermore, each locking pin simultaneously matches two latches arranged at intervals.

[0011] Furthermore, the engine assembly tray with quick-change support also includes several pin-type quick-change supports and auxiliary support positioning blocks; the pin-type quick-change support includes a pin-type quick-change support base, a support bracket, and a pin, the support bracket is connected to the pin-type quick-change support base, and the top of the support bracket protrudes above the pin-type quick-change support base, the pin includes an upper cylinder and a lower cylinder fixedly connected below the upper cylinder, and the outer diameter of the lower cylinder is smaller than the outer diameter of the upper cylinder, and a pin hole for accommodating the lower cylinder is opened in the middle of the support bracket; the auxiliary support positioning block is detachably connected to the top of the pin.

[0012] Furthermore, the lower cylinder is provided with a limiting post, and the top of the support is provided with a limiting groove that can accommodate the limiting post.

[0013] Furthermore, a sliding shaft is fixedly connected below the support bracket. The outer diameter of the sliding shaft is larger than the outer diameter of the support bracket. A cylindrical cavity that can accommodate the sliding shaft is opened in the middle of the quick-change pin support base, and the height of the cylindrical cavity is greater than the length of the sliding shaft. A baffle is also connected to the top of the quick-change pin support base. A through hole is opened in the middle of the baffle. The diameter of the through hole is larger than the outer diameter of the support bracket and smaller than the outer diameter of the sliding shaft.

[0014] Furthermore, an adjusting spring is provided at the bottom of the sliding shaft, with the top of the adjusting spring resting against the bottom of the sliding shaft and the bottom of the adjusting spring resting against the tray body.

[0015] The above technical solution has the following beneficial effects:

[0016] In this technical solution, the engine assembly pallet is equipped with insert-type quick-change supports for installing the main support positioning block and pin-type quick-change supports for installing the auxiliary support positioning block. When the production task is switched to different vehicle models, the support components can be quickly replaced by inserting and removing them, replacing the original support positioning block with one suitable for the new vehicle model. Unlike existing technologies, it is not necessary to set multiple spare support components of different models on the engine assembly pallet at the same time, thus significantly reducing the product weight and facilitating equipment maintenance and transportation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of an engine assembly tray with quick-change support according to an embodiment of the present invention;

[0019] Figure 2 This is an installation diagram of the insert-type quick-change support in an embodiment of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the insert support plate in an embodiment of this utility model;

[0021] Figure 4 This is a schematic diagram of the latch structure in an embodiment of this utility model;

[0022] Figure 5 This is a schematic diagram of the pin-type quick-change support in an embodiment of this utility model;

[0023] Figure 6 This is a schematic diagram of the quick-change support base for the pin shaft in an embodiment of this utility model;

[0024] Reference numerals: 1. Pallet body; 2. Pin-type quick-change support; 21. Pin-type quick-change support base; 22. Load-bearing support; 23. Pin; 231. Upper cylinder; 232. Lower cylinder; 233. Positioning block mounting platform; 24. Limiting groove; 25. Limiting post; 26. Pin hole; 27. Baffle; 28. Sliding shaft; 29. ​​Adjusting spring; 3. Insert-type quick-change support; 31. Insert-type quick-change support base; 32. Support shaft; 33. Insert-type support plate; 34. Connecting plate 35. Arc-shaped groove; 36. Locking pin; 37. Positioning block mounting hole; 4. Locking mechanism; 41. Lock base; 42. Lock; 43. Compression spring; 44. Pressure plate; 45. Hook structure; 46. Rotating shaft; 5. Main support positioning block; 5a. Main support positioning block a; 5b. Main support positioning block b; 5c. Main support positioning block c; 6. Auxiliary support positioning block; 6a. Auxiliary support positioning block a; 6b. Auxiliary support positioning block b; 6c. Auxiliary support positioning block c. Detailed Implementation

[0025] 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.

[0026] like Figure 1 , Figure 2 As shown, this utility model embodiment provides an engine assembly tray with quick-change supports, including a tray body 1, a plurality of insert quick-change supports 3, and a main support positioning block 5; the insert quick-change supports 3 include two spaced insert quick-change support bases 31 and a long strip-shaped insert support plate 33; the bottom of the insert quick-change support base 31 is connected to the top of the tray body 1, and a horizontal support shaft 32 is provided at the top of the insert quick-change support base 31; each end of the insert support plate 33 is provided with an open-bottomed arc-shaped groove 35, and each arc-shaped groove 35 can be engaged with the corresponding support shaft 32; the main support positioning block is detachably connected to the top of the insert support plate 33.

[0027] To address the aforementioned issues, this technical solution eliminates the need for multiple sets of spare support components of different models on the assembly pallet, unlike existing technologies. Instead, it uses only one set of support components. Furthermore, it abandons bolt connections and designs all support components (including the insert-type quick-change support 3 and the pin-type quick-change support 2 described later) for quick disassembly and assembly, enabling rapid replacement during use. In application, the support component for installing the main support positioning block 5 is designed as the insert-type quick-change support 3, while the support component for installing the auxiliary support positioning block 6 is designed as the pin-type quick-change support 2 described later. The main support positioning block 5 includes main support positioning blocks 5a, 5b, and 5c, and the auxiliary support positioning block 6 includes auxiliary support positioning blocks 6a, 6b, and 6c (e.g., ...). Figure 1 (As shown). In specific implementation, main support positioning blocks 5a, 5b, and 5c are all engine supports, used to support and position the engine (or electric motor). Auxiliary support positioning blocks 6a, 6b, and 6c are all front suspension supports, used to support and position the front suspension components of the vehicle. Furthermore, the specifications of engine supports and front suspension supports are varied and not limited to... Figure 1 The different configurations shown should be selected or configured according to actual needs.

[0028] For the insert-type quick-change support 3 that carries the main support positioning block 5, when using it, you only need to insert the insert support plate 33 with the specific model main support positioning block 5 pre-installed into the predetermined position, so that the arc groove 35 is locked above the support shaft 32, thus realizing quick disassembly and quick installation.

[0029] Furthermore, such as Figure 3 As shown, two clamp-shaped connecting plates 34 are connected to each end of the insert support plate 33. An arc-shaped groove 35 is formed in the lower center of the connecting plate 34, and the two connecting plates 34 respectively fit against the front and rear sides of the insert support plate 33. The two ends of the support shaft 32 protrude from the front and rear sides of the insert quick-change support base 31. In this way, each end of the insert support plate 33 has two arc-shaped grooves 35, meaning that the front and rear sides of the insert support plate 33 have arc-shaped grooves 35 that cooperate with the support shaft 32. The insert support plate 33 is positioned in the center, thus making the force distribution more reasonable and ensuring the stability of the insert support plate 33. In addition, the top of the insert support plate 33 is provided with multiple positioning block mounting holes 37, through which the main support positioning block 5 can be installed by threaded connection.

[0030] Furthermore, if the arc-shaped groove 35 is simply engaged with the support shaft 32 without any other fixation, the lower part of the arc-shaped groove 35 is an open structure, which will inevitably cause the connection to loosen due to vibration and other factors during use, causing the insert support plate 33 to separate. To address this, a locking mechanism 4 is designed. The locking mechanism 4 includes a locking base 41 and a locking buckle 42. The locking base 41 is connected to the upper part of the tray body 1, and the bottom of the locking buckle 42 is hinged to the locking base 41. The top of the locking buckle 42 has a hook structure 45. A locking pin 36 is provided in the middle of the insert support plate 33, and the two ends of the locking pin 36 protrude from the front and rear sides of the insert support plate 33, respectively. When the arc-shaped groove 35 is engaged with the support shaft 32, the hook structure 45 can be engaged above the locking pin 36, thereby ensuring the stability of the insert support plate 33. To achieve better results, the hook structure 45 is preferably designed as a self-locking structure, that is, when the hook structure 45 is pressed on the locking pin 36, it is in a dead position, and no matter how much upward force is applied, the hook structure 45 cannot be pushed open. It can only be unlocked by rotating the hook structure 45.

[0031] Furthermore, such as Figure 4 As shown, the latch 42 is also fixedly connected to a pressure plate 44, which is located on the opposite side of the hook structure 45. The locking mechanism 4 also includes a compression spring 43, the bottom of which rests against the tray body 1, and the top of which rests against the pressure plate 44. With this arrangement, after the insert support plate 33 is placed in place and the arc-shaped groove 35 is engaged with the support shaft 32, the latch 42 will rotate spontaneously due to the elastic force of the compression spring 43, thereby pressing the hook structure 45 against the locking pin 36, preventing accidental loosening during use.

[0032] Furthermore, such as Figure 2 , Figure 4 As shown, the locking mechanism 4 also includes a rotating shaft 46 and multiple latches 42. These latches 42 are arranged axially along the rotating shaft 46, and each latch 42 is hinged to a latch base 41 via the rotating shaft 46. That is, the rotating shaft 46 connects all the latches 42. A latch base 41 is provided at each end of the tray body 1, so that both ends of the rotating shaft 46 are hinged to a latch base 41. When the rotating shaft 46 rotates, all the latches 42 can move synchronously, thereby further improving the efficiency of replacing the support components. For ease of operation, a wrench can also be provided in the middle of the rotating shaft 46 for easy gripping by the operator.

[0033] Furthermore, such as Figure 2 , Figure 4As shown, since the two ends of the locking pin 36 can protrude from the front and rear sides of the insert support plate 33 respectively, two latches 42 can be configured for each insert support plate 33. That is, each locking pin 36 is matched with two latches 42 arranged at intervals. The two latches 42 are respectively attached to the front and rear sides of the insert support plate 33, so that the locking action of the locking mechanism 4 is more reliable and easier to operate. When placing the insert support plate 33, insert the insert support plate 33 through the gap between a set of latches 42, so that the insert support plate 33 is aligned with the insert quick-change support base 31 below, ensuring that the arc groove 35 is engaged with the support shaft 32.

[0034] Furthermore, such as Figure 1 , Figure 5 As shown, the engine assembly tray with quick-change supports also includes several pin-type quick-change supports 2 and auxiliary support positioning blocks 6; the pin-type quick-change supports 2 include a pin-type quick-change support base 21, a support bracket 22, and a pin 23. The support bracket 22 is connected to the pin-type quick-change support base 21, and the top of the support bracket 22 protrudes above the pin-type quick-change support base 21. The pin 23 includes an upper cylinder 231 and a lower cylinder 232 fixedly connected to the lower part of the upper cylinder 231, and the outer diameter of the lower cylinder 232 is smaller than the outer diameter of the upper cylinder 231. A pin hole 26 for accommodating the lower cylinder 232 is opened in the middle of the support bracket 22; the auxiliary support positioning blocks 6 are detachably connected to the top of the pin 23 (e.g., Figure 5 As shown, the top of the pin 23 is provided with a positioning block mounting surface 233, which is fitted with the auxiliary support positioning block 6 via a shaft hole. When replacing, simply pull the old pin 23 out of the support bracket 22, and then insert the new pin 23 into the pin hole 26.

[0035] Furthermore, the lower cylinder 232 is provided with a limiting post 25, and the top of the support 22 is provided with a limiting groove 24 that can accommodate the limiting post 25. When the limiting groove 24 locks the limiting post 25, it can effectively prevent the pin 23 from rotating and ensure that the auxiliary support positioning block 6 installed on the top of the pin 23 is in an accurate position.

[0036] Furthermore, in practical applications, the relative positions of the car engine and the vehicle chassis may not perfectly match the expected positions when they are first placed. It is best to have a certain degree of positional adjustment capability. Therefore, the main support positioning blocks 5 can be designed to be fixed to support the car engine, while the auxiliary support positioning blocks 6 can be designed to move up and down, allowing for a suitable amount of adjustment and preventing damage to components due to positional interference. At this time, if... Figure 6 As shown, the pin-type quick-change support 2 is designed as follows:

[0037] A sliding shaft 28 is fixedly connected below the support bracket 22. The outer diameter of the sliding shaft 28 is larger than that of the support bracket 22. A cylindrical cavity is formed in the middle of the quick-change pin support base 21 to accommodate the sliding shaft 28, and the height of the cylindrical cavity is greater than the length of the sliding shaft 28. A baffle 27 is also connected to the top of the quick-change pin support base 21. A through hole is formed in the middle of the baffle 27. The diameter of the through hole is larger than the outer diameter of the support bracket 22 but smaller than the outer diameter of the sliding shaft 28. At this time, under the action of external force, the sliding shaft 28 can move up and down within the cylindrical cavity.

[0038] It should be noted here that since the sliding shaft 28 and the cylindrical cavity are fitted with a shaft hole, this fit cannot guarantee that the sliding shaft 28 will not rotate. Therefore, the perforation can be set to be non-circular, for example... Figure 5 As shown, a straight edge is retained on the basis of the circular hole, that is, a shape formed by connecting an arc and a straight line. At the same time, the bearing support 22 that matches it is also machined into a flat surface, thereby ensuring that the sliding shaft 28 does not rotate. At this time, the cooperation between the aforementioned limiting groove 24 and the limiting post 25 can truly play the role of preventing rotation.

[0039] Furthermore, manually adjusting the height of the sliding shaft 28 when placing the car engine is obviously insufficient to meet actual production needs. To enable the sliding shaft 28 to adaptively adjust its height, an adjusting spring 29 is installed at the bottom of the sliding shaft 28. The top of the adjusting spring 29 rests against the bottom of the sliding shaft 28, and the bottom of the adjusting spring 29 rests against the tray body 1. The adjusting spring 29 not only automatically adjusts the height but also acts as a buffer. In addition, a spring guide cylinder can be fixedly connected to the bottom of the sliding shaft 28, and the adjusting spring 29 is sleeved on the outside of the spring guide cylinder.

[0040] Furthermore, in this technical solution, the pallet body 1 can be a single plate, or it can be as shown in the appendix to this application. Figure 1 The design features a double-layered plate (including an upper pallet body 11 and a lower pallet body 12). The upper and lower layers can be used to install the main support positioning block 5 and the auxiliary support positioning block 6, respectively. According to actual production needs, the connection between the upper pallet body 11 and the lower pallet body 12 can be made into a movable connection, so that the two can generate an appropriate amount of displacement, avoid the impact generated when the engine is placed, and facilitate the adjustment of position during assembly.

[0041] In summary, the engine assembly tray with quick-change support of this utility model embodiment allows for rapid replacement of the support components when switching production tasks to different vehicle models, as follows:

[0042] When replacing the main support positioning block 5, you only need to turn the rotating shaft 46 with one hand (you can also turn the latch 42 directly, but turning the rotating shaft 46 is easier to operate and can lift multiple latches 42 at once to perform multiple sets of insert quick-change supports 3, which is more efficient), so that the latch 42 no longer presses the locking pin 36. Then you can use the other hand to lift the insert support plate 33. After that, place the new insert support plate 33 with the appropriate model of main support positioning block 5 installed in the predetermined position on the insert quick-change support base 31. Then release the hand that turned the rotating shaft 46. The spring force of the compression spring 43 will cause the latch 42 and the rotating shaft 46 to rotate and reset together, and the locking pin 36 on the new insert support plate 33 will be pressed again to fix the new insert support plate 33.

[0043] When replacing the auxiliary support positioning block 6, simply pull the pin 23 out of the pin hole 26, and then replace it with a new pin 23 that is equipped with the appropriate model of auxiliary support positioning block 6. The replacement work is completed with just one pull and one insertion.

[0044] Therefore, by adopting this technical solution, only one set of support components needs to be retained on the engine assembly pallet. Unlike existing technologies, which require multiple sets of spare support components of different models on the assembly pallet, this significantly reduces equipment weight, simplifies the structure, and avoids space constraints on the assembly pallet, preventing space limitations from affecting assembly operations. Furthermore, because replacing the support components is simple and time-efficient compared to the overturning operation of existing technologies, it does not disrupt normal production processes.

[0045] In the above detailed description, various features are combined together in a single embodiment to simplify this disclosure. This approach to disclosure should not be construed as reflecting an intention that embodiments of the claimed subject matter require more features than are explicitly stated in each claim. Rather, as reflected in the appended claims, the invention is presented with fewer features than all of the features in a single disclosed embodiment. Therefore, the appended claims are hereby explicitly incorporated into the detailed description, with each claim representing a separate preferred embodiment of the invention.

[0046] The disclosed embodiments have been described above to enable any person skilled in the art to implement or use this invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments without departing from the spirit and scope of this disclosure. Therefore, this disclosure is not limited to the embodiments given herein, but is consistent with the widest scope of the principles and novel features disclosed in this application.

[0047] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. An engine assembly pallet with quick change support, characterized in that, It includes a pallet body (1), several insert-type quick-change supports (3), and a main support positioning block (5); The insert-type quick-change support (3) includes two spaced insert quick-change support bases (31) and a long strip-shaped insert support plate (33); the bottom of the insert quick-change support base (31) is connected to the upper part of the tray body (1), and the top of the insert quick-change support base (31) is provided with a horizontal support shaft (32); the two ends of the insert support plate (33) are respectively provided with an open bottom arc-shaped groove (35), and each arc-shaped groove (35) can be engaged above the corresponding support shaft (32); The main support positioning block (5) is detachably connected to the top of the insert support plate (33).

2. The engine assembly tray with quick-change support as described in claim 1, characterized in that, Two clamp-shaped connecting plates (34) are connected to both ends of the insert support plate (33). The arc-shaped groove (35) is opened below the middle of the connecting plate (34), and the two connecting plates (34) are respectively attached to the front and rear sides of the insert support plate (33). The two ends of the support shaft (32) protrude from the front and rear sides of the insert quick-change support base (31).

3. The engine assembly tray with quick-change support as described in claim 2, characterized in that, It also includes a locking mechanism (4), which includes a locking base (41) and a locking buckle (42). The locking base (41) is connected to the upper part of the tray body (1). The bottom of the locking buckle (42) is hinged to the locking base (41). The top of the locking buckle (42) has a hook structure (45). A locking pin (36) is provided in the middle of the insert support plate (33). The two ends of the locking pin (36) protrude from the front and rear sides of the insert support plate (33) respectively. When the arc-shaped groove (35) is engaged with the support shaft (32), the hook structure (45) can be locked above the locking pin (36).

4. The engine assembly tray with quick-change support as described in claim 3, characterized in that, The latch (42) is also fixedly connected to a pressure plate (44), and the pressure plate (44) is located on the opposite side of the hook structure (45); the locking mechanism (4) also includes a compression spring (43), the bottom of the compression spring (43) abuts against the tray body (1), and the top of the compression spring (43) abuts against the pressure plate (44).

5. The engine assembly tray with quick-change support as described in claim 4, characterized in that, The locking mechanism (4) further includes a rotating shaft (46); there are multiple latches (42), which are arranged along the axial direction of the rotating shaft (46), and all of the latches (42) are hinged to the latch base (41) through the rotating shaft (46).

6. The engine assembly tray with quick-change support as described in claim 5, characterized in that, Each of the locking pins (36) simultaneously mates with two latches (42) arranged at a distance from each other.

7. The engine assembly tray with quick-change support as described in claim 1, characterized in that, It also includes several pin-type quick-change supports (2) and auxiliary support positioning blocks (6); the pin-type quick-change supports (2) include a pin-type quick-change support base (21), a support bracket (22) and a pin (23), the support bracket (22) is connected to the pin-type quick-change support base (21), and the top of the support bracket (22) protrudes above the pin-type quick-change support base (21), the pin (23) includes an upper cylinder (231) and a lower cylinder (232) fixedly connected below the upper cylinder (231), and the outer diameter of the lower cylinder (232) is smaller than the outer diameter of the upper cylinder (231), and a pin hole (26) for accommodating the lower cylinder (232) is opened in the middle of the support bracket (22); the auxiliary support positioning block (6) is detachably connected to the top of the pin (23).

8. The engine assembly tray with quick-change support as described in claim 7, characterized in that, The lower cylinder (232) is provided with a limiting post (25), and the top of the support bracket (22) is provided with a limiting groove (24) that can accommodate the limiting post (25).

9. The engine assembly tray with quick-change support as described in claim 7, characterized in that, A sliding shaft (28) is fixedly connected below the support bracket (22). The outer diameter of the sliding shaft (28) is larger than the outer diameter of the support bracket (22). A cylindrical cavity that can accommodate the sliding shaft (28) is opened in the middle of the quick-change pin support base (21), and the height of the cylindrical cavity is greater than the length of the sliding shaft (28). A baffle (27) is also connected to the top of the quick-change pin support base (21). A through hole is opened in the middle of the baffle (27). The diameter of the through hole is larger than the outer diameter of the support bracket (22) and smaller than the outer diameter of the sliding shaft (28).

10. The engine assembly tray with quick-change support as described in claim 9, characterized in that, An adjusting spring (29) is also provided at the bottom of the sliding shaft (28). The top end of the adjusting spring (29) abuts against the bottom of the sliding shaft (28), and the bottom end of the adjusting spring (29) abuts against the tray body (1).

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