Device for disassembling main bearing cover

Abstract

The utility model belongs to the technical field of engine assembly equipment, and particularly relates to a device for disassembling a main bearing cover, which comprises an unscrewing mechanism and an expanding mechanism, wherein the unscrewing mechanism comprises a supporting assembly and an unscrewing assembly, the unscrewing assembly comprises an unscrewing driving part and an unscrewing head, the fixed end of the unscrewing driving part is connected to the supporting assembly, the unscrewing head is connected to the output end of the unscrewing driving part, the unscrewing driving part is used for driving the unscrewing head to rotate, and the unscrewing head is used for unscrewing a connecting bolt; the expanding mechanism is connected with the supporting assembly and comprises a first expanding claw and a second expanding claw, and the first expanding claw and the second expanding claw can extend into a crankshaft hole formed by the main bearing cover and the cylinder body and can move in the direction away from each other so as to lift the main bearing cover away from the cylinder body. By using the device for disassembling the main bearing cover in the technical scheme, the main bearing cover can be quickly disassembled.

Description

Technical Field

[0001] This utility model belongs to the technical field of engine assembly equipment, specifically relating to a device for disassembling the main bearing cover. Background Technology

[0002] When assembling a car engine, the main bearing cap needs to be removed from the cylinder block before installing components such as the crankshaft. Currently, there are two main methods for disassembling the main bearing cap: one method involves manually loosening the main bearing connecting bolts with a pneumatic wrench and tapping the side of the main bearing cap with a hammer until the lower locating pin is loosened, then lifting the main bearing cap with both hands; the other method uses a specialized machine tool for disassembly. Both methods have drawbacks: manual disassembly is time-consuming and labor-intensive, while the operation of specialized machine tools is complex and not conducive to improving assembly efficiency.

[0003] Therefore, there is an urgent need to provide a device for disassembling the main bearing cover to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to at least solve the problem of how to efficiently disassemble the main bearing cover. This purpose is achieved through the following technical solution:

[0005] The first aspect of this utility model provides a device for disassembling a main bearing cover, comprising:

[0006] A loosening mechanism includes a support assembly and a loosening assembly. The loosening assembly includes a loosening drive and a loosening head. The fixed end of the loosening drive is connected to the support assembly, and the loosening head is connected to the output end of the loosening drive. The loosening drive is used to drive the loosening head to rotate, and the loosening head is used to loosen the connecting bolt.

[0007] An expansion mechanism is provided, which is connected to the support assembly. The expansion mechanism includes a first expansion claw and a second expansion claw. The first expansion claw and the second expansion claw can extend into the crankshaft hole formed by the main bearing cover and the cylinder body and can move in opposite directions to lift the main bearing cover away from the cylinder body.

[0008] When using the device for disassembling the main bearing cover in this technical solution, firstly, align the loosening head of the loosening mechanism with the connecting bolts connecting the main bearing cover and the cylinder block, start the loosening drive to rotate the loosening head and loosen the connecting bolts; after the connecting bolts are loosened, insert the first and second expansion claws of the expansion mechanism into the crankshaft hole, and lift the main bearing cover off the cylinder block by increasing the distance between the first and second expansion claws, thereby achieving the disassembly of the main bearing cover.

[0009] In addition, the device for disassembling the main bearing cover of this utility model may also have the following additional technical features:

[0010] In some embodiments of this utility model, the loosening assembly includes a first loosening assembly, a second loosening assembly, a third loosening assembly, and a fourth loosening assembly. The first loosening assembly and the second loosening assembly are spaced apart along a first direction, the third loosening assembly and the fourth loosening assembly are spaced apart along the first direction, the first loosening assembly and the fourth loosening assembly are spaced apart along a second direction, and the second loosening assembly and the third loosening assembly are spaced apart along a second direction. The first direction and the second direction are perpendicular.

[0011] In some embodiments of this utility model, the support component includes a base plate and a first movable plate. The first movable plate is movably connected to the base plate. The first loosening component and the second loosening component are both connected to the first movable plate. The first movable plate is used to drive the first loosening component and the second loosening component to move along a second direction.

[0012] In some embodiments of this utility model, the support assembly further includes a second movable plate and a third movable plate. The second loosening assembly is movably connected to the first movable plate via the second movable plate, and the third loosening assembly is movably connected to the base plate via the third movable plate. The second movable plate is used to drive the second loosening assembly to move along the first direction, and the third movable plate is used to drive the third loosening assembly to move along the first direction.

[0013] In some embodiments of this utility model, the loosening mechanism further includes a connecting assembly, which includes a first connecting plate, a second connecting plate, a guide rail, and a slider. The first connecting plate is connected to the second moving plate, the second connecting plate is connected to the third moving plate, the slider is connected to the second connecting plate, and the guide rail is arranged along a second direction with one end connected to the first connecting plate and the other end slidably inserted into the slider.

[0014] In some embodiments of this utility model, the expansion mechanism includes a fixed plate, a floating plate, and a first driving member. The floating plate is connected to the side of the fixed plate facing the main bearing cover and can reciprocate relative to the fixed plate in a vertical direction. The fixed end of the first driving member is connected to the floating plate, the first expansion claw is connected to the output end of the first driving member, and the second expansion claw is connected to the floating plate. The first driving member can drive the first expansion claw to abut against the inner side of the cylinder. The abutment of the first expansion claw against the inner side of the cylinder causes the floating plate to move away from the main bearing cover, thereby causing the second expansion claw to abut against the inner side of the main bearing cover.

[0015] In some embodiments of this utility model, the expansion mechanism further includes a clamping block and a second driving member. The fixed end of the second driving member is connected to the floating plate, and the clamping block is connected to the output end of the second driving member. The second driving member can drive the clamping block to press against the top of the main bearing cover.

[0016] In some embodiments of this utility model, the device for disassembling the main bearing cover further includes a robotic arm connecting frame, the loosening mechanism and the expanding mechanism are connected through the robotic arm connecting frame, and the robotic arm connecting frame is used to cooperate with the robotic arm.

[0017] In some embodiments of this utility model, the device for disassembling the main bearing cover further includes a quick-change disc and a mounting plate, the expansion mechanism is connected to the mounting plate, and the quick-change disc and the robotic arm connecting frame are detachably connected.

[0018] In some embodiments of this utility model, multiple expansion mechanisms are provided, and the multiple expansion mechanisms are arranged along the length direction of the mounting plate. Attached Figure Description

[0019] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0020] Figure 1 A schematic diagram of the structure of the device for disassembling the main bearing cover according to an embodiment of the present invention during operation is shown.

[0021] Figure 2 A schematic diagram of the structure of a device for disassembling a main bearing cover according to an embodiment of the present invention is shown.

[0022] Figure 3 A schematic diagram of the loosening mechanism according to an embodiment of the present invention is shown from a certain perspective.

[0023] Figure 4 A schematic diagram of the loosening mechanism according to an embodiment of the present invention is shown from another perspective.

[0024] Figure 5 A schematic diagram of the expansion mechanism according to an embodiment of the present invention is shown from a certain perspective.

[0025] Figure 6 A schematic diagram of the expansion mechanism according to an embodiment of the present invention is shown from another perspective.

[0026] Figure 7 A schematic diagram of the expansion mechanism according to an embodiment of the present invention during its operation is shown.

[0027] Figure 8 The illustration schematically shows an embodiment of the present invention. Figure 7 A magnified view of a portion of point A in the middle.

[0028] The labels in the attached diagram are as follows:

[0029] 10. Main bearing cap; 20. Cylinder block; 30. Connecting bolts; 40. Assembly line conveyor table; 50. Pallet;

[0030] 100. Loosening mechanism; 110. Support assembly; 111. Base plate; 112. First moving plate; 113. Second moving plate; 114. Third moving plate; 120. Loosening assembly; 120a. Loosening drive component; 120b. Loosening head; 121. First loosening assembly; 122. Second loosening assembly; 123. Third loosening assembly; 124. Fourth loosening assembly; 130. Connecting assembly; 131. First connecting plate; 132. Second connecting plate; 133. Guide rail; 134. Slider; 140. Longitudinal drive component; 150. Lateral drive component;

[0031] 200, Opening mechanism; 210, First opening claw; 220, Second opening claw; 230, Fixed plate; 240, Floating plate; 250, First driving component; 260, Clamping block; 261, Clearance groove; 270, Second driving component; 280, Guide shaft;

[0032] 300. Robotic arm connecting frame; 400. Robotic arm; 500. Quick change plate; 600. Mounting plate. Detailed Implementation

[0033] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0034] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0035] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0036] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations.

[0037] Figure 1 A schematic diagram of the structure of the device for disassembling the main bearing cover 10 according to an embodiment of the present invention is shown in operation. Figure 2 A schematic diagram of a device for disassembling the main bearing cover 10 according to an embodiment of the present invention is shown. Figure 1 and Figure 2As shown, this utility model proposes a device for disassembling the main bearing cover 10, including a loosening mechanism 100 and a spreading mechanism 200. The loosening mechanism 100 includes a support assembly 110 and a loosening assembly 120. The loosening assembly 120 includes a loosening drive member 120a and a loosening head 120b. The fixed end of the loosening drive member 120a is connected to the support assembly 110, and the loosening head 120b is connected to the output end of the loosening drive member 120a. The loosening drive member 120a drives the loosening head 120b to rotate, and the loosening head 120b loosens the connecting bolt 30. The spreading mechanism 200 is connected to the support assembly 110. The spreading mechanism 200 includes a first spreading claw 210 and a second spreading claw 220. The first spreading claw 210 and the second spreading claw 220 can extend into the crankshaft hole formed by the main bearing cover 10 and the cylinder body 20 and can move in opposite directions to lift the main bearing cover 10 away from the cylinder body 20.

[0038] When disassembling the main bearing cover 10 using the device for disassembling the main bearing cover 10 in this technical solution, firstly, align the loosening head 120b of the loosening mechanism 100 with the connecting bolt 30 connecting the main bearing cover 10 and the cylinder block 20, and start the loosening drive 120a to make the loosening head 120b rotate and loosen the connecting bolt 30; after the connecting bolt 30 is loosened, extend the first expansion claw 210 and the second expansion claw 220 of the expansion mechanism 200 into the crankshaft hole, and lift the main bearing cover 10 off the cylinder block 20 by increasing the distance between the first expansion claw 210 and the second expansion claw 220, thereby realizing the disassembly of the main bearing cover 10.

[0039] Furthermore, during operation, the cylinder body 20 is positioned on the conveyor belt 40. After the main bearing cover 10 is lifted off the cylinder cover, the robotic arm 400 grasps the main bearing cover 10 and places it on the tray 50 next to the conveyor belt 40. Subsequently, the cylinder body 20 continues to be conveyed along with the conveyor belt 40. In addition to grasping the main bearing cover 10, the robotic arm 400 can also be used to move the positions of the loosening mechanism 100 and the opening mechanism 200.

[0040] Furthermore, the device for disassembling the main bearing cover 10 also includes a robotic arm connecting frame 300, through which the loosening mechanism 100 and the opening mechanism 200 are connected, and the robotic arm connecting frame 300 is used to cooperate with the robotic arm 400.

[0041] The robotic arm connecting frame 300 provides a gripping point for the robotic arm 400. Moving the connecting frame 300 allows for the movement of the loosening mechanism 100 and the expanding mechanism 200. In this embodiment, the robotic arm connecting frame 300 has a roughly triangular profile in the horizontal plane, providing high structural stability. The loosening mechanism 100 and the expanding mechanism 200 are respectively connected to two mutually perpendicular sides of the robotic arm connecting frame 300; this arrangement ensures good overall stability of the device.

[0042] Furthermore, Figure 3 A schematic diagram of the loosening mechanism 100 according to an embodiment of the present invention is shown from a certain perspective. Figure 4 A schematic structural diagram of the loosening mechanism 100 according to an embodiment of the present invention is shown from another perspective. See also Figure 3 and Figure 4 The loosening assembly 120 includes a first loosening assembly 121, a second loosening assembly 122, a third loosening assembly 123, and a fourth loosening assembly 124. The first loosening assembly 121 and the second loosening assembly 122 are spaced apart along a first direction (X-axis direction in the figure), the third loosening assembly 123 and the fourth loosening assembly 124 are spaced apart along the first direction, the first loosening assembly 121 and the fourth loosening assembly 124 are spaced apart along a second direction (Y-axis direction in the figure), and the second loosening assembly 122 and the third loosening assembly 123 are spaced apart along the second direction. The first direction and the second direction are perpendicular.

[0043] By setting four loosening heads 120b, four connecting bolts 30 can be loosened simultaneously, greatly improving work efficiency. In this embodiment, each main bearing cover 10 is connected to the cylinder body 20 by two connecting bolts 30. Multiple main bearing covers 10 are arranged along the second direction. Correspondingly, the first loosening assembly 121, the second loosening assembly 122, the third loosening assembly 123, and the fourth loosening assembly 124 are arranged in a matrix and correspond one-to-one with the positions of the connecting bolts 30.

[0044] Furthermore, the support assembly 110 includes a base plate 111 and a first movable plate 112. The first movable plate 112 is movably connected to the base plate 111. The first loosening assembly 121 and the second loosening assembly 122 are both connected to the first movable plate 112. The first movable plate 112 is used to drive the first loosening assembly 121 and the second loosening assembly 122 to move along a second direction.

[0045] The positions of the first loosening assembly 121 and the second loosening assembly 122 in the second direction are adjusted according to the distance between the connecting bolts 30 on adjacent main bearing caps 10, thereby aligning the loosening head 120b with the connecting bolts 30. This structure allows the device to have a wider range of applications. Furthermore, the loosening mechanism 100 also includes a longitudinal drive member 140, with its fixed end connected to the base plate 111 and its output end connected to the first moving plate 112, for driving the first moving plate 112 to move along the second direction, thereby driving the first loosening assembly 121 and the second loosening assembly 122 to move in the second direction. Optionally, the longitudinal drive member 140 can be a motor or a cylinder.

[0046] Furthermore, the support assembly 110 also includes a second movable plate 113 and a third movable plate 114. The second loosening assembly 122 is movably connected to the first movable plate 112 via the second movable plate 113, and the third loosening assembly 123 is movably connected to the base plate 111 via the third movable plate 114. The second movable plate 113 is used to drive the second loosening assembly 122 to move along the first direction, and the third movable plate 114 is used to drive the third loosening assembly 123 to move along the first direction.

[0047] Understandably, the positions of the second movable plate 113 and the third movable plate 114 are adjusted according to the spacing between the two connecting bolts 30 on each main bearing cover 10. Furthermore, through the arrangement of the first movable plate 112, the second movable plate 113 and the third movable plate 114, the spacing of the loosening head 120b in both the first and second directions is adjustable, which greatly expands the adaptability of the loosening mechanism 100.

[0048] Further, see Figure 4 The loosening mechanism 100 also includes a connecting assembly 130, which includes a first connecting plate 131, a second connecting plate 132, a guide rail 133, and a slider 134. The first connecting plate 131 is connected to the second moving plate 113, the second connecting plate 132 is connected to the third moving plate 114, the slider 134 is connected to the second connecting plate 132, the guide rail 133 is arranged along the second direction and one end is connected to the first connecting plate 131, and the other end is slidably inserted into the slider 134.

[0049] By connecting the second moving plate 113 and the third moving plate 114 through the connecting component 130, the positions of the second loosening component 122 and the third loosening component 123 can be adjusted simultaneously, increasing the accuracy and convenience of position adjustment. Optionally, the loosening mechanism 100 also includes a transverse drive component 150, the fixed end of which is connected to the base plate 111, and the output end of which is connected to the slider 134, for driving the second moving plate 113 and the third moving plate 114 to move along the first direction, thereby driving the second loosening component 122 and the third loosening component 123 to move along the first direction.

[0050] Furthermore, Figure 5 The diagram illustrates the structure of the expansion mechanism 200 according to an embodiment of the present invention from a certain perspective. Figure 6 A schematic diagram of the expansion mechanism 200 according to an embodiment of the present invention is shown from another perspective. Figure 7 A schematic diagram of the expansion mechanism 200 according to an embodiment of the present invention during operation is shown. Figure 8 The illustration schematically shows an embodiment of the present invention. Figure 7 A magnified view of a portion at point A. See also... Figures 5 to 8 The expansion mechanism 200 includes a fixed plate 230, a floating plate 240, and a first driving member 250. The floating plate 240 is connected to the side of the fixed plate 230 facing the main bearing cover 10 and can reciprocate relative to the fixed plate 230 in the vertical direction. The fixed end of the first driving member 250 is connected to the floating plate 240. The first expansion claw 210 is connected to the output end of the first driving member 250. The second expansion claw 220 is connected to the floating plate 240. The first driving member 250 can drive the first expansion claw 210 to abut against the inner side of the cylinder 20. The abutment of the first expansion claw 210 against the inner side of the cylinder 20 causes the floating plate 240 to move away from the main bearing cover 10, thereby causing the second expansion claw 220 to abut against the inner side of the main bearing cover 10.

[0051] Understandably, when the first driving member 250 drives the first expanding claw 210 to move downward so that the first expanding claw 210 abuts against the inner side of the cylinder body 20, the floating plate 240 moves upward due to the reaction force of the first expanding claw 210, thereby causing the second expanding claw to move upward and abut against the inner side of the main bearing cover 10, and thus the main bearing cover 10 is expanded. Optionally, a guide shaft 280 is connected to the bottom of the fixed plate 230, the guide shaft 280 passes through the floating plate 240, and the floating plate 240 can move along the guide shaft 280.

[0052] Furthermore, the expansion mechanism 200 also includes a clamping block 260 and a second driving member 270. The fixed end of the second driving member 270 is connected to the floating plate 240, and the clamping block 260 is connected to the output end of the second driving member 270. The second driving member 270 can drive the clamping block 260 to press against the top of the main bearing cover 10.

[0053] Because the main bearing cap 10 has locating pins on both sides, and the crankshaft bore diameters of engines produced on mixed production lines are inconsistent, if the clamping block 260 is not used to clamp and position the main bearing cap 10 during the expansion process, it will cause one side to expand first, leading to the main bearing cap 10 tilting and becoming stuck. The working process of the expansion mechanism 200 is as follows: the second drive member 270 drives the clamping block 260 to move downwards and approach the top of the main bearing cap 10, and the first drive member 250 drives the first expansion claw 210 to press downwards and clamp the inner side of the cylinder block 20; the floating plate 240 moves upwards, and the second expansion claw 220 moves upwards and abuts against the main bearing cap 10; the second drive member 270 continues to drive the clamping block 260 to move downwards, thereby clamping the main bearing cap 10 with the clamping block 260 and the second expansion claw 220; the first drive member 250 continues to extend the first expansion claw 210, thereby separating the main bearing cap 10 from the cylinder block 20.

[0054] Optionally, the clamping block 260 is provided with a relief groove 261. When the expansion mechanism 200 moves into place, the connecting bolt 30 is located at the relief groove 261 to avoid interference between the clamping block 260 and the connecting bolt 30.

[0055] Furthermore, the device for disassembling the main bearing cover 10 also includes a quick-change disc 500 and a mounting plate 600, an expansion mechanism 200 connected to the mounting plate 600, and a quick-change disc 500 and a robotic arm connecting frame 300 that are detachably connected.

[0056] The expansion mechanism 200 can be replaced by disassembling the quick-change disc 500 to adapt to different engine models. Optionally, the quick-change disc 500 and the robotic arm connecting frame 300 are connected by bolts. The bolted connection method facilitates installation and removal and provides structural stability. Optionally, the fixing plate 230 and the mounting plate 600 of the expansion mechanism 200 are connected.

[0057] Furthermore, multiple expansion mechanisms 200 are provided, and the multiple expansion mechanisms 200 are arranged along the length direction of the mounting plate 600.

[0058] By setting multiple expansion mechanisms 200, multiple main bearing covers 10 can be expanded simultaneously, increasing the disassembly efficiency of the main bearing covers 10. In this embodiment, four expansion mechanisms 200 are connected to the mounting plate 600. In other embodiments, the number of expansion mechanisms 200 can be two, three, five, or six, depending on actual needs.

[0059] The working process of the device for disassembling the main bearing cover 10 provided in this technical solution is as follows:

[0060] According to the model of the cylinder 20 on the conveyor platform 40, adjust the spacing between the four loosening heads 120b. Specifically, adjust the positions of the first loosening assembly 121 and the second loosening assembly 122 by activating the longitudinal cylinder, and then adjust the positions of the second loosening assembly 122 and the third loosening assembly 123 by activating the transverse cylinder, ensuring that the loosening heads 120b correspond one-to-one with the connecting bolts 30 on the main bearing cover 10. After adjustment, the robotic arm 400 grabs the robotic arm connecting frame 300 and moves the loosening mechanism 100 above the main bearing cover 10. After the loosening heads 120b are aligned with the connecting bolts 30, activate the loosening drive component 120a to loosen the connecting bolts 30. When all connecting bolts 30 are loosened, the robotic arm 400 grabs the robotic arm connecting frame 300 and moves the expansion mechanism 200 into place. At this time, the first expansion claw 210 and the second expansion claw 220 are located in the bearing hole, and the clamping block 260 is located above the main bearing cover 10. The second drive unit 270 is activated, causing the clamping block 260 to move downwards towards the top of the main bearing cover 10. The first drive unit 250 is activated, causing the first expansion claw 210 to press downwards against the inner side of the cylinder body 20. The floating plate 240 is forced to move upwards, and the second expansion claw 220 moves upwards to abut against the main bearing cover 10. The second drive unit 270 continues to drive the clamping block 260 downwards, thereby clamping the main bearing cover 10 between the clamping block 260 and the second expansion claw 220. The first drive unit 250 continues to extend the first expansion claw 210, thereby separating the main bearing cover 10 from the cylinder body 20. The robotic arm 400 picks up the main bearing cover 10 and places it on the tray 50. After the main bearing cover 10 is disassembled, the cylinder body 20 continues to be conveyed forward by the conveyor belt 40.

[0061] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. A device for disassembling a main bearing cover, characterized in that, include: A loosening mechanism (100) includes a support assembly (110) and a loosening assembly (120). The loosening assembly (120) includes a loosening drive (120a) and a loosening head (120b). The fixed end of the loosening drive (120a) is connected to the support assembly (110), and the loosening head (120b) is connected to the output end of the loosening drive (120a). The loosening drive (120a) is used to drive the loosening head (120b) to rotate, and the loosening head (120b) is used to loosen the connecting bolt (30). An expansion mechanism (200) is connected to the support assembly (110). The expansion mechanism (200) includes a first expansion claw (210) and a second expansion claw (220). The first expansion claw (210) and the second expansion claw (220) can extend into the crankshaft hole formed by the main bearing cover (10) and the cylinder (20) and can move in opposite directions to lift the main bearing cover (10) away from the cylinder (20).

2. The apparatus for removing a main bearing cap of claim 1, wherein, The loosening assembly (120) includes a first loosening assembly (121), a second loosening assembly (122), a third loosening assembly (123), and a fourth loosening assembly (124). The first loosening assembly (121) and the second loosening assembly (122) are spaced apart along a first direction, the third loosening assembly (123) and the fourth loosening assembly (124) are spaced apart along the first direction, the first loosening assembly (121) and the fourth loosening assembly (124) are spaced apart along a second direction, and the second loosening assembly (122) and the third loosening assembly (123) are spaced apart along the second direction. The first direction and the second direction are perpendicular.

3. The apparatus for removing a main bearing cap of claim 2, wherein, The support assembly (110) includes a base plate (111) and a first movable plate (112). The first movable plate (112) is movably connected to the base plate (111). The first loosening assembly (121) and the second loosening assembly (122) are both connected to the first movable plate (112). The first movable plate (112) is used to drive the first loosening assembly (121) and the second loosening assembly (122) to move along a second direction.

4. The apparatus for removing a main bearing cap of claim 3, wherein, The support assembly (110) further includes a second movable plate (113) and a third movable plate (114). The second loosening assembly (122) is movably connected to the first movable plate (112) via the second movable plate (113). The third loosening assembly (123) is movably connected to the base plate (111) via the third movable plate (114). The second movable plate (113) is used to drive the second loosening assembly (122) to move along the first direction. The third movable plate (114) is used to drive the third loosening assembly (123) to move along the first direction.

5. The apparatus for removing a main bearing cap of claim 4, wherein, The loosening mechanism (100) further includes a connecting assembly (130), which includes a first connecting plate (131), a second connecting plate (132), a guide rail (133), and a slider (134). The first connecting plate (131) is connected to the second moving plate (113), the second connecting plate (132) is connected to the third moving plate (114), the slider (134) is connected to the second connecting plate (132), and the guide rail (133) is arranged along a second direction with one end connected to the first connecting plate (131) and the other end slidably inserted into the slider (134).

6. A device for removing a main bearing cap according to any one of claims 1-5, characterized in that, The expansion mechanism (200) includes a fixed plate (230), a floating plate (240), and a first driving member (250). The floating plate (240) is connected to the side of the fixed plate (230) facing the main bearing cover (10), and the floating plate (240) can reciprocate relative to the fixed plate (230) in the vertical direction. The fixed end of the first driving member (250) is connected to the floating plate (240), and the first expansion claw (210) is connected to the first driving member. At the output end of the actuator (250), the second expansion claw (220) is connected to the floating plate (240). The first driving member (250) can drive the first expansion claw (210) to abut against the inner side of the cylinder (20). The abutment of the first expansion claw (210) against the inner side of the cylinder (20) causes the floating plate (240) to move away from the main bearing cover (10), thereby causing the second expansion claw (220) to abut against the inner side of the main bearing cover (10).

7. The apparatus for removing a main bearing cap of claim 6, wherein, The expansion mechanism (200) further includes a clamping block (260) and a second driving member (270). The fixed end of the second driving member (270) is connected to the floating plate (240), and the clamping block (260) is connected to the output end of the second driving member (270). The second driving member (270) can drive the clamping block (260) to press against the top of the main bearing cover (10).

8. A device for removing a main bearing cap according to any one of claims 1-5, characterized in that, The device for disassembling the main bearing cover (10) further includes a robotic arm connecting frame (300), through which the loosening mechanism (100) and the opening mechanism (200) are connected, and the robotic arm connecting frame (300) is used to cooperate with the robotic arm (400).

9. The apparatus for removing a main bearing cap of claim 8, wherein, The device for disassembling the main bearing cover (10) further includes a quick-change disc (500) and a mounting plate (600), the expansion mechanism (200) is connected to the mounting plate (600), and the quick-change disc (500) and the robotic arm connecting frame (300) are detachably connected.

10. The apparatus for removing a main bearing cap of claim 9, wherein, Multiple expansion mechanisms (200) are provided, and the multiple expansion mechanisms (200) are arranged along the length direction of the mounting plate (600).

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