Jig for manufacturing single engine cover

Abstract

The engine cover single body manufacturing jig comprises a connecting mechanism, a fixing mechanism and a connecting frame, the connecting mechanism comprises a mounting block and a first fastening piece, a limiting groove is formed in the end, away from the connecting frame, of the mounting block, and the first fastening piece is detachably connected with the groove wall of the limiting groove; the first fastening piece and the limiting groove can define a limiting space used for limiting the engine cover hook to move relative to the connecting mechanism. According to the technical scheme, the fixing mechanism is connected with the vehicle frame to limit movement of the connecting frame relative to the vehicle frame, the groove wall of the limiting groove is detachably connected with the first fastener to limit movement of the engine cover hook relative to the connecting mechanism, and therefore the vehicle frame and the engine cover hook are connected, the structure is simple, operation is convenient and fast, and cost is low. The installation steps are saved, the operation intensity is reduced, the working time is shortened, the working efficiency is improved, and the operation safety is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, in particular to a manufacturing jig for a single engine cover. Background Art

[0002] At present, when making engine hoods in automobile manufacturing paint shops, due to the limitations of the production process, before the engine hood is painted, it is necessary to first lift the engine hood with an electric hoist, and then manually install and fix the engine hood on a special monocoque. In order to ensure the stability of the engine hood installation, it is necessary to install and fix multiple connection positions on the engine hood and the monocoque, and the installation steps are cumbersome. Finally, the monocoque with the engine hood installed can be moved to the electrophoresis tank to paint the engine hood, thereby preventing the engine hood from rusting. Special equipment such as electric hoists and monocoques are required during the entire operation process. Not only is the operation difficult, but there are also great operational safety risks. In addition, there are many connection positions between the engine hood and the monocoque, and the installation steps are cumbersome, making the entire operation process very intensive. It takes 3 people up to 3 hours to complete the operation, resulting in low work efficiency, which affects the production efficiency of the entire workshop. Utility Model Content

[0003] The main purpose of the utility model is to provide a single-body production jig for an engine cover, aiming to solve the problem of low work efficiency due to great difficulty in operation, great safety risk, complicated installation steps, high strength and long time consumption during the production of the engine cover.

[0004] To achieve the above-mentioned purpose, the utility model proposes a single-body manufacturing jig for an engine hood, the single-body manufacturing jig for the engine hood comprises a connecting mechanism, a fixing mechanism and a connecting frame, the connecting mechanism comprises a mounting block and a first fastener, one end of the connecting frame is connected to the mounting block, and the other end of the connecting frame is connected to the fixing mechanism; a limiting groove is provided at one end of the mounting block away from the connecting frame, the limiting groove is used to accommodate the engine hood hook, the first fastener is detachably connected to the groove wall of the limiting groove, the first fastener and the limiting groove can enclose a limiting space for limiting the movement of the engine hood hook relative to the connecting mechanism, and the fixing mechanism is used to connect to a frame to limit the movement of the connecting frame relative to the frame.

[0005] In one embodiment, the mounting block is further provided with a first through hole and a second through hole connected to the limiting groove, and the first through hole and the second through hole are coaxially arranged; the first fastener passes through the first through hole, the limiting groove and the second through hole so that the first fastener and the limiting groove can enclose to form the limiting space.

[0006] In one embodiment, the first fastener includes a first head, a first abutment portion and a first guide portion connected in sequence, the outer wall of the first guide portion is provided with a first threaded section, the connecting mechanism also includes a first nut, the first nut is connected to the mounting block and the internal threaded hole of the first nut is connected to the second through hole, the first guide portion passes through the first through hole, the limiting groove, the second through hole and the internal threaded hole of the first nut, and the first threaded section is threadedly connected to the internal threaded hole of the first nut, so that the first fastener and the limiting groove can enclose to form the limiting space.

[0007] In one embodiment, the fixing mechanism includes a positioning assembly, a flat plate and a support plate, the positioning assembly includes a first positioning rod and a second positioning rod, one end of the support plate is fixedly connected to the flat plate, the other end of the support plate is fixedly connected to the connecting frame, the flat plate is fixedly connected to the first positioning rod, the first positioning rod is used to insert into the first positioning hole of the frame; the flat plate is provided with a third through hole corresponding to the second positioning hole of the frame, the second positioning rod passes through the third through hole and the second positioning hole of the frame to limit the movement of the connecting frame relative to the frame.

[0008] In one embodiment, the second positioning rod includes a second head, a second abutment portion and a second guide portion connected in sequence, the outer wall of the second guide portion is provided with a second threaded section, the second guide portion passes through the third through hole and extends into the second positioning hole of the frame, and the second threaded section is threadedly connected to the second positioning hole of the frame.

[0009] In one embodiment, the fixing mechanism further comprises a reinforcing rod, one end of which is fixedly connected to the connecting frame, and the other end of which is fixedly connected to the flat plate. In one embodiment, the connecting frame comprises a first connecting assembly and a second connecting assembly, the first connecting assembly comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is fixedly connected to the fixing mechanism, the other end of the first connecting rod is fixedly connected to the second connecting rod, and the first connecting rod and the second connecting rod are arranged vertically, one end of the second connecting rod away from the first connecting rod is connected to the second connecting assembly, and the second connecting rod and the second connecting assembly are arranged coaxially.

[0010] In one embodiment, the connecting frame is an integrally formed part.

[0011] In one embodiment, the second connecting assembly includes a second nut, a second fastener and a third connecting rod, the third connecting rod is coaxially arranged with the second connecting rod, the third connecting rod is provided with a fourth through hole, the third connecting rod and the second connecting rod are slidingly matched, the second nut is connected to the third connecting rod and the internal threaded hole of the second nut is connected to the fourth through hole, and the second fastener is threadedly connected to the internal threaded hole of the second nut to tighten the second connecting rod.

[0012] In one embodiment, the second fastener comprises a bolt, and the bolt is threadedly connected to the internal threaded hole of the second nut.

[0013] In an embodiment of the utility model, two ends of the connecting frame are respectively connected to the fixing mechanism and the mounting block of the connecting mechanism, the fixing mechanism is connected to the vehicle frame to limit the movement of the connecting frame relative to the vehicle frame, a limiting groove is provided on the mounting block, the limiting groove is used to accommodate the engine hood hook, the engine hood hook is an annular structure, the engine hood hook is set in the limiting groove, and then the first fastener and the groove wall of the limiting groove are detachably connected to each other so that the first fastener and the groove wall of the limiting groove can be enclosed to form a limiting space, the engine hood hook is restricted in the limiting space, thereby limiting the movement of the engine hood hook relative to the connecting mechanism; by respectively limiting the movement of the frame relative to the connecting frame and the movement of the engine hood hook relative to the connecting frame , thereby realizing the connection between the frame and the engine hood hook, and limiting the relative movement of the engine hood and the frame; compared with the existing engine hood monomer production process, the engine hood monomer production jig only needs to connect the frame with the fixing mechanism and the engine hood hook with the connecting mechanism, and there is no need to install and fix multiple connection positions on the engine hood and the monomer vehicle, which greatly saves installation steps and reduces work intensity. The engine hood monomer production jig has a simple structure and is easy and quick to operate, which greatly shortens working time and effectively improves work efficiency. During the entire operation process, there is no need to use special equipment such as electric hoists or monomer vehicles, which greatly improves the safety of the operation. The embodiment of the utility model adopts a fixing mechanism to connect with the frame so as to limit the movement of the connecting frame relative to the frame, and adopts a groove wall of the limiting groove to be detachably connected with the first fastener so as to limit the movement of the engine hood hook relative to the connecting mechanism, thereby realizing the connection between the frame and the engine hood hook and limiting the relative movement of the engine hood and the frame; the engine hood monomer manufacturing jig has a simple structure and is convenient and quick to operate, which greatly saves installation steps, reduces work intensity, effectively shortens working time, and improves work efficiency. In the entire operation process, there is no need to use special equipment such as electric hoists or monomer vehicles, which greatly improves the safety of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0015] Figure 1 This is a structural schematic diagram of an embodiment of a jig for manufacturing a single engine cover of the utility model;

[0016] Figure 2 It is a structural schematic diagram of another perspective of an embodiment of a jig for manufacturing a single engine cover of the utility model;

[0017] Figure 3 This is a structural schematic diagram of a connecting frame of an embodiment of a jig for manufacturing a single engine cover of the utility model;

[0018] Figure 4 A schematic structural diagram of a first fastener of an embodiment of a jig for manufacturing a single engine cover of the utility model;

[0019] Figure 5 A schematic structural diagram of a second positioning rod of an embodiment of a jig for manufacturing a single engine cover of the utility model;

[0020] Figure 6 It is a structural schematic diagram of a first connecting component of an embodiment of a jig for manufacturing a single engine cover of the utility model;

[0021] Figure 7 It is a structural schematic diagram of the second connecting component of an embodiment of the engine cover monomer manufacturing jig of the utility model.

[0022] Description of Figure Numbers:

[0023]

[0024]

[0025] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0028] The main purpose of the utility model is to provide a single-body production jig for an engine cover, aiming to solve the problem of low work efficiency due to great difficulty in operation, great safety risk, complicated installation steps, high strength and long time consumption during the production of the engine cover.

[0029] The utility model provides a manufacturing jig for a single engine cover.

[0030] like Figure 1 and Figure 2 As shown, in one embodiment of the utility model, the engine hood monomer manufacturing jig 100 includes a connecting mechanism 1, a fixing mechanism 2 and a connecting frame 3, the connecting mechanism 1 includes a mounting block 11 and a first fastener 12, one end of the connecting frame 3 is connected to the mounting block 11, and the other end of the connecting frame 3 is connected to the fixing mechanism 2; a limiting groove 111 is provided at one end of the mounting block 11 away from the connecting frame 3, the limiting groove 111 is used to accommodate the engine hood hook, the first fastener 12 is detachably connected to the groove wall of the limiting groove 111, the first fastener 12 and the limiting groove 111 can enclose a limiting space 112 for limiting the movement of the engine hood hook relative to the connecting mechanism 1, and the fixing mechanism 2 is used to be connected to the frame to limit the movement of the connecting frame 3 relative to the frame.

[0031] In the embodiment of the utility model, the two ends of the connecting frame 3 are respectively connected to the fixing mechanism 2 and the mounting block 11 of the connecting mechanism 1. The fixing mechanism 2 is connected to the frame to limit the movement of the connecting frame 3 relative to the frame. A limiting groove 111 is provided on the mounting block 11. The limiting groove 111 is used to accommodate the engine hood hook. The engine hood hook is an annular structure. The engine hood hook is set in the limiting groove 111, and then the first fastener 12 is detachably connected to the groove wall of the limiting groove 111 so that the first fastener 12 and the groove wall of the limiting groove 111 can be enclosed to form a limiting space 112. The engine hood hook is confined in the limiting space 112, thereby limiting the movement of the engine hood hook relative to the connecting mechanism 1; by respectively limiting the movement of the frame relative to the connecting frame 3 and the engine hood hook, the engine hood hook can be limited to the engine hood hook. The hood hook moves relative to the connecting frame 3, thereby realizing the connection between the frame and the hood hook, limiting the relative movement of the hood and the frame; compared with the existing hood monomer production process, the hood monomer production jig 100 only needs to connect the frame with the fixing mechanism 2 and the hood hook with the connecting mechanism 1, and there is no need to install and fix multiple connection positions on the hood and the monomer vehicle, which greatly saves installation steps and reduces work intensity. The hood monomer production jig 100 has a simple structure and is easy and quick to operate, which greatly shortens working time and effectively improves work efficiency. During the entire operation process, there is no need to use special equipment such as electric hoists or monomer vehicles, which greatly improves the safety of the operation.

[0032] The technical solution of the utility model adopts a fixing mechanism 2 to connect with the frame so as to limit the movement of the connecting frame 3 relative to the frame, and adopts a detachable connection between the groove wall of the limiting groove 111 and the first fastener 12 so as to limit the movement of the engine hood hook relative to the connecting mechanism 1, thereby realizing the connection between the frame and the engine hood hook and limiting the relative movement of the engine hood and the frame; the engine hood monomer manufacturing jig 100 has a simple structure and is convenient and quick to operate, which greatly saves installation steps, reduces work intensity, effectively shortens working time, improves work efficiency, and does not require the use of special equipment during the entire operation process, greatly improving the safety of the operation.

[0033] like Figure 3As shown, in one embodiment, the mounting block 11 is further provided with a first through hole 113 and a second through hole 114 which are connected to the limiting groove 111, and the first through hole 113 and the second through hole 114 are coaxially arranged; the first fastener 12 passes through the first through hole 113, the limiting groove 111 and the second through hole 114 so that the first fastener 12 and the limiting groove 111 can enclose a limiting space 112; specifically, the limiting groove 111 is used to accommodate the engine hood hook, the first through hole 113 and the second through hole 114 are both connected to the limiting groove 111, the first fastener 12 passes through the first through hole 113, the limiting groove 111 and the second through hole 114 and is detachably connected to the groove wall of the limiting groove 111, and the first fastener 12 can enclose the limiting groove 111 to form a limiting space 112, thereby limiting the movement of the engine hood hook relative to the connecting mechanism 1, thereby realizing the connection between the frame and the engine hood hook, and limiting the relative movement of the engine hood and the frame.

[0034] like Figure 4As shown, in one embodiment, the first fastener 12 includes a first head 121, a first abutting portion 122 and a first guide portion 123 connected in sequence, the outer wall of the first guide portion 123 is provided with a first threaded section 123a, the connecting mechanism 1 also includes a first nut 13, the first nut 13 is connected to the mounting block 11 and the internal threaded hole of the first nut 13 is connected to the second through hole 114, the first guide portion 123 passes through the first through hole 113, the limiting groove 111, the second through hole 114 and the inner wall of the first nut 13 The first threaded hole is threadedly connected to the internal threaded hole of the first nut 13, so that the first fastener 12 and the groove wall of the limiting groove 111 can be enclosed to form a limiting space 112; specifically, in order to realize the detachable connection between the first fastener 12 and the groove wall of the limiting groove 111, the connecting mechanism 1 is further provided with a first nut 13 connected to the mounting block 11 and communicated with the second through hole 114, and the first fastener 12 and the mounting block 11 are connected by threading the first threaded hole 123a and the first nut 13. The disassembly and installation of the mounting block 11 enables the first fastener 12 and the groove wall of the limiting groove 111 to enclose a limiting space 112, and the engine hood hook is limited in the limiting space 112. The structure is simple, the operation is convenient and quick, and the disassembly and installation of the engine hood hook are easy; and the first guide portion 123 is further provided with a first guide section 123b at one end away from the first abutting portion 122, and the diameter of the first guide section 123b is smaller than the diameter of the first threaded section 123a, and the first guide section 123b plays a guiding role. By setting the first guide section 123b, it is convenient for the first threaded section 123a to pass through the first through hole 113, the limiting groove 111, and the second through hole 114 and then be threadedly connected with the internal threaded hole of the first nut 13. By rotating the first head 121, the tightness of the threaded connection between the first threaded section 123a and the internal threaded hole of the first nut 13 can be adjusted, so that the first abutting portion 122 abuts against the outer wall of the mounting plate, thereby achieving the stability of the connection between the frame and the engine hood hook and limiting the relative movement of the engine hood and the frame.

[0035] like Figure 6As shown, in one embodiment, the fixing mechanism 2 includes a positioning assembly 21, a flat plate 22 and a supporting plate 23, the positioning assembly 21 includes a first positioning rod 211 and a second positioning rod 212, one end of the supporting plate 23 is fixedly connected to the flat plate 22, the other end of the supporting plate 23 is fixedly connected to the connecting frame 3, the flat plate 22 is fixedly connected to the first positioning rod 211, the first positioning rod 211 is used to insert into the first positioning hole of the frame; the flat plate 22 is provided with a third through hole 221 corresponding to the second positioning hole of the frame, the second positioning rod 212 passes through the third through hole 221 and the second positioning hole of the frame to limit the movement of the connecting frame 3 relative to the frame; specifically, Due to the uneven internal structure of the frame, the flat plate 22 abuts against the frame, and the flat plate 22 and the connecting frame 3 are connected by the support plate 23, which can increase the gap between the frame and the connecting frame 3 and avoid interference between the frame and the connecting frame 3, and the first positioning rod 211 is used to be inserted into the first positioning hole of the frame, and the second positioning rod 212 is used to pass through the third through hole 221 and the second positioning hole of the frame. The first positioning rod 211 cooperates with the first positioning hole of the frame and the second positioning rod 212 cooperates with the second positioning hole of the frame to limit the movement and rotation of the connecting frame 3 relative to the frame, thereby effectively ensuring the stability of the connection between the engine cover and the frame.

[0036] like Figure 5 As shown, in one embodiment, the second positioning rod 212 includes a second head 2121, a second abutting portion 2122 and a second guide portion 2123 connected in sequence, the outer wall of the second guide portion 2123 is provided with a second threaded section 2123a, the second guide portion 2123 passes through the third through hole 221 and extends into the second positioning hole of the frame, and the second threaded section 2123a is threadedly connected to the second positioning hole of the frame; specifically, the second guide portion 2123 is further provided with a second guide section 2123 at one end away from the second abutting portion 2122. b. The diameter of the second guide section 2123b is smaller than the diameter of the second threaded section 2123a. The second guide section 2123b plays a guiding role. By setting the second guide section 2123b, it is convenient for the second threaded section 2123a to pass through the third through hole 221 and extend into the second positioning hole of the frame. By rotating the second head 2121, the tightness of the threaded connection between the second threaded section 2123a and the second positioning hole can be adjusted, so that the second abutting portion 2122 abuts against the flat plate 22, thereby achieving the stability of the connection between the connecting frame 3 and the frame.

[0037] In one embodiment, the fixing mechanism 2 further includes a reinforcing rod 24, one end of which is fixedly connected to the connecting frame 3, and the other end of which is fixedly connected to the flat plate 22; specifically, when the vehicle frame and the engine hood hook are connected by the engine hood monomer manufacturing jig 100, the engine hood is in an inclined state, so the engine hood monomer manufacturing jig 100 also bears the gravity of the engine hood, and is also subjected to the pressure of the liquid when the vehicle frame and the engine hood are subjected to the painting operation in the electrophoresis tank. Therefore, in order to prevent the connection between the support plate 23 and the connecting frame 3 from being deformed or broken due to the gravity of the engine hood and the pressure of the liquid, thereby affecting the painting operation, a reinforcing rod 24 is further provided between the flat plate 22 and the connecting frame 3 to strengthen the connection strength, one end of the reinforcing rod 24 is welded to the connecting frame 3, and the other end of the reinforcing rod 24 is welded to the flat plate 22, so as to improve the structural stability of the engine hood monomer manufacturing jig 100. It should be noted that the number of reinforcing rods 24 can be multiple.

[0038] like Figure 6 and Figure 7 As shown, in one embodiment, the connecting frame 3 includes a first connecting component 31 and a second connecting component 32, the first connecting component 31 includes a first connecting rod 311 and a second connecting rod 312, one end of the first connecting rod 311 is fixedly connected to the fixing mechanism 2, the other end of the first connecting rod 311 is fixedly connected to the second connecting rod 312, and the first connecting rod 311 and the second connecting rod 312 are vertically arranged, and the end of the second connecting rod 312 away from the first connecting rod 311 is connected to the second connecting component 32, and the second connecting rod 312 and the second connecting component 32 are coaxially arranged; specifically, in this embodiment, in order to ensure the structural stability of the engine cover monomer manufacturing jig 100, the fixed connection The method adopts welding. When the engine hood monomer manufacturing jig 100 is connected to the frame and the engine hood hook, the engine hood is in an inclined state. In order to avoid the engine hood and the frame from abutting and affecting the painting operation, the first connecting rod 311 and the second connecting rod 312 are vertically arranged, which can increase the gap between the engine hood and the frame, and the connection between the first connecting rod 311 and the second connecting rod 312 is an arc transition, which can prevent stress concentration and increase strength; the second connecting rod 312 is coaxially arranged with the second connecting component 32, that is, the second connecting component 32 is also vertically arranged with the first connecting rod 311, which further increases the gap between the engine hood and the frame and effectively avoids the abutment between the engine hood and the frame.

[0039] like Figure 3As shown, in one embodiment, the connecting frame 3 is an integrally formed part; specifically, the second connecting rod 312 and the second connecting assembly 32 are connected by welding. The connecting frame 3 is an integrally formed part, which can enhance the connection strength between the second connecting rod 312 and the second connecting assembly 32, thereby preventing the engine cover monomer manufacturing jig 100 from being deformed or broken due to the gravity of the engine cover and the pressure of the liquid, thereby affecting the painting operation, and effectively ensuring the structural stability of the engine cover monomer manufacturing jig 100.

[0040] like Figure 7 As shown, in one embodiment, the second connecting assembly 32 includes a second nut 321, a second fastener (not shown) and a third connecting rod 323, the third connecting rod 323 is coaxially arranged with the second connecting rod 312, the third connecting rod 323 is provided with a fourth through hole 3231, the third connecting rod 323 is slidably matched with the second connecting rod 312, the second nut 321 is connected to the third connecting rod 323 and the internal threaded hole of the second nut 321 is communicated with the fourth through hole 3231, and the second fastener is threadedly connected to the internal threaded hole of the second nut 321 to tighten the second connecting rod 312; specifically, the third connecting rod 323 is coaxially arranged with the second connecting rod 312, that is, the third connecting rod 323 is also perpendicular to the first connecting rod 311, which increases the gap between the engine cover and the frame, and effectively avoids the situation where the engine cover and the frame abut each other; and due to different vehicle The sizes of engine hoods of different models are different, and the installation positions of the engine hood hooks are also different. To ensure that the engine hood monomer manufacturing jig 100 can connect the vehicle frame to the engine hood hooks of different models and expand the applicability of the engine hood monomer manufacturing jig 100, the three connecting rods 323 are slidably matched with the second connecting rod 312, that is, the third connecting rod 323 can be inserted into the fourth through hole 3231 and slide relative to the second connecting rod 312. The position of the engine hood hook of different models is adapted by adjusting the length of the second connecting rod 312 inserted into the fourth through hole 3231, and then the second fastener and the internal threaded hole of the second nut 321 are threadedly connected so that the second fastener can abut against the second connecting rod 312, thereby limiting the sliding of the second connecting rod 312 and the third connecting rod 323, and ensuring the stability of the connection between the second connecting rod 312 and the third connecting rod 323.

[0041] In one embodiment, the second fastener includes a bolt, which is threadedly connected to the internal threaded hole of the second nut 321; specifically, the bolt is threadedly connected to the internal threaded hole of the second nut 321 so that the bolt can abut against the second connecting rod 312, thereby limiting the sliding of the second connecting rod 312 and the third connecting rod 323. The structure is simple, the operation is convenient, and the stability of the connection between the second connecting rod 312 and the third connecting rod 323 can be ensured.

[0042] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A single-body manufacturing jig for an engine cover, characterized in that: The engine hood monomer manufacturing jig includes a connecting mechanism, a fixing mechanism and a connecting frame, the connecting mechanism includes a mounting block and a first fastener, one end of the connecting frame is connected to the mounting block, and the other end of the connecting frame is connected to the fixing mechanism; a limiting groove is provided at one end of the mounting block away from the connecting frame, the limiting groove is used to accommodate the engine hood hook, the first fastener is detachably connected to the groove wall of the limiting groove, the first fastener and the limiting groove can enclose a limiting space for limiting the movement of the engine hood hook relative to the connecting mechanism, and the fixing mechanism is used to connect to the frame to limit the movement of the connecting frame relative to the frame.

2. The engine cover monomer manufacturing jig according to claim 1, characterized in that: The mounting block is also provided with a first through hole and a second through hole connected to the limiting groove, and the first through hole and the second through hole are coaxially arranged; the first fastener passes through the first through hole, the limiting groove and the second through hole so that the first fastener and the limiting groove can enclose to form the limiting space.

3. The engine cover monomer manufacturing jig according to claim 2, characterized in that: The first fastener includes a first head, a first abutment portion and a first guide portion which are connected in sequence, an outer wall of the first guide portion is provided with a first threaded section, the connecting mechanism also includes a first nut, the first nut is connected to the mounting block and the internal threaded hole of the first nut is connected to the second through hole, the first guide portion passes through the first through hole, the limiting groove, the second through hole and the internal threaded hole of the first nut, and the first threaded section is threadedly connected to the internal threaded hole of the first nut, so that the first fastener and the limiting groove can enclose to form the limiting space.

4. The engine cover monomer manufacturing jig according to claim 1, characterized in that: The fixing mechanism includes a positioning assembly, a flat plate and a supporting plate, the positioning assembly includes a first positioning rod and a second positioning rod, one end of the supporting plate is fixedly connected to the flat plate, the other end of the supporting plate is fixedly connected to the connecting frame, the flat plate is fixedly connected to the first positioning rod, the first positioning rod is used to insert into the first positioning hole of the frame; the flat plate is provided with a third through hole corresponding to the second positioning hole of the frame, the second positioning rod passes through the third through hole and the second positioning hole of the frame to limit the movement of the connecting frame relative to the frame.

5. The engine cover monomer manufacturing jig according to claim 4, characterized in that: The second positioning rod includes a second head, a second abutment portion and a second guide portion connected in sequence, the outer wall of the second guide portion is provided with a second threaded section, the second guide portion passes through the third through hole and extends into the second positioning hole of the frame, and the second threaded section is threadedly connected to the second positioning hole of the frame.

6. The engine cover monomer manufacturing jig according to claim 5, characterized in that: The fixing mechanism further comprises a reinforcing rod, one end of which is fixedly connected to the connecting frame, and the other end of which is fixedly connected to the flat plate.

7. The engine cover monomer manufacturing jig according to any one of claims 1 to 6, characterized in that: The connecting frame includes a first connecting component and a second connecting component, the first connecting component includes a first connecting rod and a second connecting rod, one end of the first connecting rod is fixedly connected to the fixing mechanism, the other end of the first connecting rod is fixedly connected to the second connecting rod, and the first connecting rod and the second connecting rod are vertically arranged, one end of the second connecting rod away from the first connecting rod is connected to the second connecting component, and the second connecting rod and the second connecting component are coaxially arranged.

8. The engine cover monomer manufacturing jig according to claim 7, characterized in that: The connecting frame is an integrally formed part.

9. The engine cover monomer manufacturing jig according to claim 7, characterized in that: The second connecting assembly includes a second nut, a second fastener and a third connecting rod. The third connecting rod is coaxially arranged with the second connecting rod. The third connecting rod is provided with a fourth through hole. The third connecting rod and the second connecting rod are slidingly matched. The second nut is connected to the third connecting rod and the internal threaded hole of the second nut is connected to the fourth through hole. The second fastener is threadedly connected to the internal threaded hole of the second nut to tighten the second connecting rod.

10. The engine cover monomer manufacturing jig according to claim 9, characterized in that: The second fastener comprises a bolt, and the bolt is threadedly connected to the internal threaded hole of the second nut.

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