An engine block and crankshaft hot-mounting apparatus

Abstract

The utility model provides a kind of engine box and crankshaft hot mounting equipment, and the equipment includes feeding and discharging mechanism, rack, heating mechanism, sliding table and drawdown mechanism;Feeding and discharging mechanism can be clamped engine box and crankshaft, to realize the feeding and discharging of engine box and crankshaft between conveying line and sliding table;Through the synergies of heating mechanism and drawdown mechanism, realize the heating and assembly integration operation between engine box and crankshaft, reduce manual intervention, improve assembly efficiency;Heating mechanism only heats the box around crankshaft mounting hole, greatly shorten the heating time of engine box, and can ensure that crankshaft mounting hole expands evenly, avoid the assembly defect caused by local overheating or heating deficiency;Drawdown mechanism can ensure that crankshaft is accurately installed in place, improve the installation precision of crankshaft and box, avoid the quality problem caused by assembly not in place.

Description

Technical Field

[0001] This application relates to the field of engine housing assembly technology, and in particular to a hot-mounting device for engine housing and crankshaft. Background Technology

[0002] During the engine housing assembly process, since the crankshaft mounting holes and crankshaft are usually interference fit, the engine housing is usually heated before the crankshaft is installed onto the engine housing.

[0003] In existing technologies, the crankshaft is typically installed onto the engine block using the following method: multiple engine blocks are manually placed in an oven for heating, usually for about 20 minutes. After heating, the heated blocks are manually removed, and then the crankshaft is installed onto the engine block. This process involves a long heating time, time-consuming manual loading and unloading, and high labor intensity; furthermore, manual operation in a high-temperature environment poses a risk of burns. Furthermore, batch heating of the blocks followed by crankshaft installation on each block makes it difficult to control the cooling rate, potentially leading to uneven fit clearances and affecting assembly accuracy. Utility Model Content

[0004] To solve the above-mentioned technical problems, this application provides an engine housing and crankshaft hot fitting device, including a loading and unloading mechanism, a frame, a heating mechanism, a slide table, and a pull-down mechanism; The loading and unloading mechanism is located on one side of the frame. A conveyor line is located below the loading and unloading mechanism. The engine housing and crankshaft move along the conveyor line to the bottom of the loading and unloading mechanism. The loading and unloading mechanism can clamp the engine housing and crankshaft, realizing the loading and unloading of the engine housing and crankshaft between the conveyor line and the slide table. The heating mechanism is located at one end of the frame; the pull-down mechanism is located at the other end of the frame; a first guide rail assembly and a sliding drive unit are provided on the frame; the slide is located on the first guide rail assembly, and under the drive of the sliding drive unit, the slide can slide along the first guide rail assembly.

[0005] In some embodiments of this application, the loading and unloading mechanism includes a three-axis truss, a housing clamping assembly, and a crankshaft clamping assembly; both the housing clamping assembly and the crankshaft clamping assembly are disposed at the Z-axis end of the three-axis truss; the housing clamping assembly includes a first mounting plate, a gripper assembly, and a positioning assembly; both the gripper assembly and the positioning assembly are disposed on the first mounting plate, the gripper assembly is used to clamp or release the housing, and the positioning assembly is used to position the housing; the crankshaft clamping assembly includes a second mounting plate and a chuck disposed on the second mounting plate, the chuck being capable of clamping or releasing the end of the crankshaft.

[0006] In some embodiments of this application, the gripper assembly is in multiple groups, and each group includes two gripper assemblies arranged opposite each other.

[0007] In some embodiments of this application, the gripper assembly includes a gripper driving unit and a gripper disposed at the end of the gripper driving unit.

[0008] In some embodiments of this application, the positioning component includes a retractable positioning pin and a fixed positioning pin; the retractable positioning pin and the fixed positioning pin are spaced apart on the first mounting plate.

[0009] In some embodiments of this application, the pull-down mechanism includes a first bracket, a second bracket, a rotary drive unit, a connecting component, and a first lifting drive unit; the first bracket is disposed on the frame, and a second guide rail assembly is disposed on the first bracket; the first lifting drive unit is disposed on the first bracket; the second bracket is disposed on the second guide rail assembly, the rotary drive unit is disposed on the second bracket, and the connecting component is drively connected to the output end of the rotary drive unit.

[0010] In some embodiments of this application, a first thread is formed at the top of the connecting assembly, a second thread is formed at the lower end of the crankshaft, and the rotation drive unit is capable of driving the connecting assembly to rotate, so that the connecting assembly and the crankshaft are threadedly connected.

[0011] In some embodiments of this application, the second bracket includes a bracket body, a first locking component, and a quick-release plate; a first slot and a second slot with openings opposite each other are formed on the bracket body; the quick-release plate is inserted into the first slot and the second slot, and a U-shaped groove with the opening direction in the same direction as the insertion direction is formed on the quick-release plate; the connecting component is engaged in the U-shaped groove; the first locking component is disposed on the bracket body and is used to press the quick-release plate in the axial direction.

[0012] In some embodiments of this application, the slide table includes a base plate, a top plate, a second lifting drive unit, a guide assembly, and a centering assembly; the base plate is disposed on the first guide rail assembly; the second lifting drive unit is fixedly connected to the base plate, and its extended end passes through the base plate and is fixedly connected to the lower surface of the top plate; the guide assembly includes a guide sleeve and a guide post, the guide sleeve is fixedly connected to the base plate, the guide post is sleeved in the guide sleeve, and its end is fixedly connected to the top plate; the centering assembly is fixedly connected to the top plate.

[0013] In some embodiments of this application, the centering assembly includes a centering base, a centering block, and a second locking assembly; the centering base is provided with a mounting hole for mounting the centering block; the centering block is disposed in the mounting hole, and a snap-fit ​​groove is formed on the side wall of the centering block along the circumference of the centering block; the second locking assembly is disposed on the centering base, and its end can snap into the snap-fit ​​groove.

[0014] Compared with the prior art, this utility model has the following advantages and beneficial effects: The engine housing and crankshaft hot assembly equipment of this application includes a loading and unloading mechanism, a frame, a heating mechanism, a slide table, and a pull-down mechanism; the loading and unloading mechanism can clamp the engine housing and crankshaft to realize the loading and unloading of the engine housing and crankshaft between the conveyor line and the slide table; when the slide table moves to the end where the heating mechanism is set, the heating mechanism can heat the housing around the crankshaft mounting hole; when the slide table moves to the end where the pull-down mechanism is set, the crankshaft is installed into the engine housing, and the crankshaft is pulled down by the pull-down mechanism; in this way, through the synergistic action of the heating mechanism and the pull-down mechanism, the heating and assembly of the engine housing and crankshaft are integrated, reducing manual intervention and improving assembly efficiency; the heating mechanism only heats the housing around the crankshaft mounting hole, which greatly shortens the heating time of the engine housing and can ensure that the crankshaft mounting hole expands evenly, avoiding poor assembly caused by local overheating or insufficient heating; the pull-down mechanism can ensure that the crankshaft is accurately installed in place, improve the installation accuracy of the crankshaft and housing, and avoid quality problems caused by improper assembly.

[0015] It should be understood that the above general description and the following detailed description are merely exemplary and explanatory, and do not limit this document. Attached Figure Description

[0016] The accompanying drawings, which form part of this document, are used to provide a further understanding of the document. The illustrative embodiments and descriptions herein are used to explain the document and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of the engine housing and crankshaft hot-fitting device provided in an exemplary embodiment of this application; Figure 2 This is a schematic diagram of the loading and unloading mechanism provided in an exemplary embodiment of this application; Figure 3 This is a schematic diagram of the structure of the housing clamping assembly and the crankshaft clamping assembly provided in an exemplary embodiment of this application; Figure 4 This is a schematic diagram of the structure of the housing clamping assembly and the crankshaft clamping assembly provided in an exemplary embodiment of this application; Figure 5 This is a schematic diagram of the structure of the housing clamping assembly and the crankshaft clamping assembly provided in an exemplary embodiment of this application; Figure 6 This is a structural schematic diagram of an exemplary embodiment of the present application of the engine housing and crankshaft hot fitting equipment (hidden loading and unloading mechanism); Figure 7 This is a schematic diagram of the structure of the slide provided in an exemplary embodiment of this application; Figure 8 This is a schematic diagram of the structure of a pull-down mechanism provided in an exemplary embodiment of this application; Figure 9 This is a schematic diagram of the structure of a pull-down mechanism provided in an exemplary embodiment of this application; Figure 10 This is a schematic diagram of the structure of a spare parts carrier assembly provided in an exemplary embodiment of this application.

[0017] In the picture: 10. Three-axis truss; 20. Housing clamping assembly; 30. Crankshaft clamping assembly; 30A. Crankshaft; 40. Frame; 50. Heating mechanism; 60. Slide table; 70. Pull-down mechanism; 80. Spare parts carrying assembly; 201. First mounting plate; 202. Gripper assembly; 2021. Gripper drive unit; 2022. Gripper; 203. Positioning assembly; 2031. Telescopic positioning pin; 2032. Fixed positioning pin; 204. Cooling gun; 205. Support part; 206. First detection switch; 301. Second mounting plate; 302. Chuck; 303. Crank limit assembly; 3031. Mounting bracket; 3032. Limiting part; 401. First guide rail assembly; 402. Sliding drive unit; 501. Heating bracket; 502. Adjustment assembly; 503. Heating part; 504. Temperature sensor; 601. Base plate; 602. Top plate Plate; 603, Second lifting drive unit; 604, Guide assembly; 605, Centering assembly; 6051, Centering seat; 6052, Centering block; 6053, Second locking assembly; 701, First bracket; 702, Second bracket; 7021, Bracket body; 7022, First locking assembly; 7023, Quick release plate; 7024, First slot; 7025, Second slot; 703, Rotation drive unit; 704, Connecting assembly; 7041, Floating tool holder; 7042, Pull-down claw; 705, First lifting drive unit; 706, Second guide rail assembly; 801, Spare parts carrier plate; 802, Detection sensor. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

[0019] During the engine housing assembly process, since the crankshaft mounting holes and crankshaft are usually interference fit, the engine housing is usually heated before the crankshaft is installed onto the engine housing.

[0020] In existing technologies, the crankshaft is typically installed onto the engine block using the following method: multiple engine blocks are manually placed in an oven for heating, usually for about 20 minutes. After heating, the heated blocks are manually removed, and then the crankshaft is installed onto the engine block. This process involves a long heating time, time-consuming manual loading and unloading, and high labor intensity; furthermore, manual operation in a high-temperature environment poses a risk of burns. Furthermore, batch heating of the blocks followed by crankshaft installation on each block makes it difficult to control the cooling rate, potentially leading to uneven fit clearances and affecting assembly accuracy.

[0021] Based on this, an exemplary embodiment of this application provides an engine housing and crankshaft hot-fitting device, which includes a loading and unloading mechanism, a frame, a heating mechanism, a slide table, and a pull-down mechanism. The loading and unloading mechanism can clamp the engine housing and crankshaft to realize loading and unloading of the engine housing and crankshaft between the conveyor line and the slide table. When the slide table moves to the end where the heating mechanism is provided, the heating mechanism can heat the housing around the crankshaft mounting hole. When the slide table moves to the end where the pull-down mechanism is provided, the crankshaft is installed into the engine housing, and the crankshaft is pulled down by the pull-down mechanism. In this way, through the synergistic action of the heating mechanism and the pull-down mechanism, the heating and assembly of the engine housing and crankshaft are integrated, reducing manual intervention and improving assembly efficiency. The heating mechanism only heats the housing around the crankshaft mounting hole, which greatly shortens the heating time of the engine housing and ensures that the crankshaft mounting hole expands evenly, avoiding poor assembly due to local overheating or insufficient heating. The pull-down mechanism can ensure that the crankshaft is accurately installed in place, improve the installation accuracy of the crankshaft and housing, and avoid quality problems caused by improper assembly.

[0022] An exemplary embodiment of this application provides an engine housing and crankshaft heat-fitting device, such as... Figures 1 to 6As shown, the engine housing and crankshaft hot mounting equipment includes a loading and unloading mechanism, a frame 40, a heating mechanism 50, a slide table 60, and a pull-down mechanism 70. The loading and unloading mechanism is located on one side of the frame 40, and a conveyor line is provided below the loading and unloading mechanism. The engine housing and crankshaft 10A move along the conveyor line to the area below the loading and unloading mechanism. The loading and unloading mechanism can clamp the engine housing and crankshaft 10A, realizing the loading and unloading of the engine housing and crankshaft 10A between the conveyor line and the slide table.

[0023] A heating mechanism 50 is located at one end of the frame 40; a pull-down mechanism 70 is located at the other end of the frame 40; a first guide rail assembly 401 and a sliding drive unit 402 are mounted on the frame 40; preferably, the sliding drive unit 402 is a rodless cylinder. A slide table 60 is mounted on the first guide rail assembly 401, and under the drive of the sliding drive unit 402, the slide table 60 can slide along the first guide rail assembly 401; the engine housing is mounted on the slide table 60, and when the slide table 60 moves to the end where the heating mechanism 50 is located, the heating mechanism 50 can heat the housing around the crankshaft mounting hole. In this way, the heating mechanism 50 only heats the housing around the crankshaft mounting hole, greatly shortening the heating time of the engine housing and ensuring uniform expansion of the crankshaft mounting hole, avoiding poor assembly due to local overheating or insufficient heating. After heating is complete, the sliding drive unit 402 drives the slide table 60 to move towards the pull-down mechanism 70. When the slide table 60 moves to the end where the pull-down mechanism 70 is located, the crankshaft 10A is installed into the engine block, and the crankshaft 10A is pulled down by the pull-down mechanism 70. The pull-down mechanism 70 ensures that the crankshaft 10A is accurately installed, improving the installation accuracy between the crankshaft 10A and the engine block and avoiding quality problems caused by improper assembly. Through the synergistic effect of the heating mechanism 50 and the pull-down mechanism 70, the heating and assembly of the engine block and crankshaft 10A are integrated, reducing manual intervention and improving the assembly efficiency of the engine block and crankshaft 10A.

[0024] like Figure 2As shown, the loading and unloading mechanism includes a three-axis truss 10, a housing clamping assembly 20, and a crankshaft clamping assembly 30; the housing clamping assembly 20 and the crankshaft clamping assembly 30 are both located at the Z-axis end of the three-axis truss 10; the three-axis truss 10 can drive the housing clamping assembly 20 and the crankshaft clamping assembly 30 to move in three-dimensional space so as to transfer the engine housing (not shown in the figure) and the crankshaft 10A between the conveyor line and the slide table 60. For example, when the engine and housing move below the housing clamping assembly 20 and the crankshaft clamping assembly 30, driven by the three-axis truss 10, the housing clamping assembly 20 and the crankshaft clamping assembly 30 can move to clamp the engine housing and transfer it onto the slide table 60 for heating. After the engine housing is heated, the crankshaft clamping assembly 30 clamps the crankshaft 10A, and driven by the three-axis truss 10, the crankshaft 10A is installed onto the heated engine housing. This loading and unloading mechanism can clamp the engine housing and the crankshaft 10A to improve loading and unloading efficiency.

[0025] like Figures 3 to 5 As shown, the housing clamping assembly 20 includes a first mounting plate 201, a gripper assembly 202, and a positioning assembly 203. Both the gripper assembly 202 and the positioning assembly 203 are disposed on the first mounting plate 201. The gripper assembly 202 is used to clamp or release the housing, and the positioning assembly 203 is used to position the housing. Preferably, there are multiple sets of gripper assemblies 202, each set including two opposing gripper assemblies 202. The two opposing gripper assemblies 202 enclose a clamping space for the engine housing. Each set of gripper assemblies 202 can clamp one type of engine housing. For example, in this application, the housing clamping assembly 20 includes two sets of gripper assemblies 202, which are spaced apart on the first mounting plate 201. Each set of gripper assemblies 202 can be adapted to one type of engine housing.

[0026] The gripper assembly 202 includes a gripper drive unit 2021 and a gripper 2022 disposed at the end of the gripper drive unit 2021. Preferably, the gripper drive unit 2021 is a spinning cylinder. When not gripping the engine housing, the gripper drive unit 2021 can drive the gripper 2022 to rotate away from the gripping space. When gripping the engine housing, the gripper drive unit 2021 drives the gripper 2022 to rotate towards the engine housing. During the rotation, the gripper 2022 is simultaneously driven to descend in order to grip the engine housing.

[0027] like Figure 4 and 5As shown, the positioning component 203 includes a retractable positioning pin 2031 and a fixed positioning pin 2032; the retractable positioning pin 2031 and the fixed positioning pin 2032 are spaced apart on the first mounting plate 201. The retractable positioning pin 2031 includes a telescopic drive unit and a positioning pin disposed at the end of the telescopic drive unit. The telescopic drive unit is preferably a cylinder. For example, when it is necessary to clamp a first-type engine housing, the retractable positioning pin 2031 and the fixed positioning pin 2032 can be used to position the housing simultaneously. At this time, the telescopic drive unit drives the positioning pin disposed at the end of the telescopic drive unit to extend in order to position the first-type engine housing. When clamping a second-type engine housing, since its shape is different from that of the first-type engine housing, the positioning surfaces are different, resulting in different positions of the positioning components. The retractable positioning pin 2031 will interfere with the second-type engine housing. At this time, the telescopic drive unit drives the positioning pin disposed at the end of the telescopic drive unit to retract in order to clamp the second-type engine housing. Thus, by setting the gripper assembly 202 and the retractable positioning pin 2031, the housing clamping assembly 20 can clamp various models of engine housings, improving the adaptability of the loading and unloading mechanism.

[0028] The housing clamping assembly 20 also includes a first detection switch 206; the first detection switch 206 is disposed on the first mounting plate 201, and the first detection switch 206 is capable of detecting the presence or absence of the engine housing. In an exemplary embodiment, the housing clamping assembly 20 also includes multiple support portions 205, all of which are disposed on the first mounting plate 201. When clamping the engine housing, the end face of the support portion 205 abuts against the surface of the engine housing. The height of each support portion 205 may be the same or different, and the position and height of the support portion 205 can be set according to the shape of the engine housing.

[0029] Preferred, such as Figure 3 As shown, the housing clamping assembly 20 also includes a cooling gun 204, which is mounted on the first mounting plate 201. Since the engine housing is heated to over 100 degrees Celsius before the crankshaft 10A is installed, and the installation time for the crankshaft 10A is relatively short, the engine housing temperature remains high after the crankshaft 10A is installed. To avoid affecting subsequent assembly processes, a cooling gun 204 is provided. The cooling gun 204 is connected to an external cooling air source, capable of blowing cool air onto the engine housing to quickly lower its temperature. The air hose of the cooling gun 204 is a gooseneck tube, which can be bent and adapted to the position of the engine housing.

[0030] The crankshaft clamping assembly 30 includes a second mounting plate 301 and a chuck 302 disposed on the second mounting plate 301. The chuck 302 can be a commercially available three-axis chuck. The chuck 302 is capable of clamping or releasing the end of the crankshaft 10A.

[0031] To facilitate the installation of crankshaft 10A onto the engine block, the crankshaft clamping assembly 30 further includes a crankshaft limiting assembly 303. The crankshaft limiting assembly 303 includes a mounting bracket 3031 and two limiting portions 3032 spaced apart on the mounting bracket 3031. The mounting bracket 3031 is mounted on the chuck 302, and a limiting space is formed between the two limiting portions 3032 for the crankshaft to pass through. When clamping crankshaft 10A, the crankshaft 10A can pass into the limiting space to limit the position of the crankshaft and prevent excessive crank rotation angle during installation, thus avoiding installation interference. Preferably, the crankshaft clamping assembly 30 further includes a second detection switch, which is mounted on the mounting bracket 3031 and can detect the presence or absence of crankshaft 10A.

[0032] like Figures 6 to 9 As shown, the pull-down mechanism 70 includes a first bracket 701, a second bracket 702, a rotary drive unit 703, a connecting assembly 704, and a first lifting drive unit 705. The first bracket 701 is mounted on the frame 40, and a second guide rail assembly 706 is mounted on the first bracket 701. The first lifting drive unit 705 is mounted on the first bracket 701. The second bracket 702 is mounted on the second guide rail assembly 706, and the rotary drive unit 703 is mounted on the second bracket 702. Preferably, the first lifting drive unit 705 is a cylinder.

[0033] The connecting assembly 704 is driven to the output end of the rotary drive unit 703. Preferably, the rotary drive unit 703 is a motor, and a coupling is connected to its output end. The connecting assembly is driven to the coupling. For example, a fastening assembly is provided in the radial direction of the coupling. One end of the connecting assembly 704 is inserted into the interior of the coupling. The fastening assembly is arranged in the radial direction, and its end can abut against the connecting assembly 704 to achieve a drive connection between the connecting assembly 704 and the rotary drive unit 706. The fastening assembly can be a screw. Tightening the fastening assembly can release the connecting assembly 704, enabling quick disassembly of the connecting assembly 704. A first thread is formed on the top of the connecting assembly 704, and a second thread is formed at the lower end of the crankshaft. Preferably, an internal thread is formed on the connecting assembly 704, and an external thread is formed at the lower end of the crankshaft. The rotary drive unit 703 can drive the connecting assembly 704 to rotate, causing the connecting assembly 704 and the crankshaft to be threadedly connected. After the connecting assembly 704 and the crankshaft are threaded together, the first lifting drive unit 705 can drive the second bracket 702, the rotation drive unit 703 and the connecting assembly 704 to move downward along the second guide rail assembly 706, thereby driving the crankshaft to move downward and ensuring that the crankshaft is installed in place, thus ensuring the installation accuracy between the crankshaft and the housing.

[0034] Since different housing sizes have different crankshaft mounting dimensions and crankshaft dimensions, the connecting component 704 in this application can be quickly changed to adapt to different housing and crankshaft specifications in order to accommodate various housing and crankshaft specifications. For example, the second bracket 702 includes a bracket body 7021, a first locking component 7022, and a quick-release plate 7023; the bracket body 7021 has a first slot 7024 and a second slot 7025 with openings opposite to each other; the quick-release plate 7023 is inserted into the first slot 7024 and the second slot 7025, and a U-shaped groove with the opening direction in the same direction as the insertion direction is formed on the quick-release plate 7023; the connecting component 704 is engaged in the U-shaped groove; the connecting component 704 includes a floating tool holder 7041 and a pull-down claw 7042; the lower part of the pull-down claw 7042 is inserted into the floating tool holder 7041, and the upper part has a first thread. The pull-down claw 7042 is provided with two annular bosses spaced apart. The radial dimension of the annular bosses is larger than the radial dimension of the U-shaped groove. The annular bosses can restrict the movement of the lower connecting assembly 704 in the axial direction. The first locking assembly 7022 is provided on the bracket body 7021. The quick-release plate 7023 is provided with a connecting hole. The end of the first locking assembly 7022 can be screwed into the connecting hole to connect with the quick-release plate 7023, so as to press the quick-release plate 7023 in the axial direction.

[0035] When it is necessary to replace the connecting component 704, the first locking component 7022 can be screwed on to separate the first locking component 7022 from the quick release plate 7023. Then, the quick release plate 7023 can be pulled out, and the fastening component can be screwed on to release the connecting component 704. The connecting component 704 can then be pulled out and replaced with a connecting component 704 of a different specification.

[0036] like Figure 7 As shown, the slide table 60 includes a base plate 601, a top plate 602, a second lifting drive unit 603, a guide assembly 604, and a centering assembly 605. The base plate 601 is mounted on the first guide rail assembly 401. The second lifting drive unit 603 is fixedly connected to the base plate 601, and its extended end passes through the base plate 601 and is fixedly connected to the lower surface of the top plate 602. A positioning pin is provided on the top plate 602 to position the housing. The guide assembly 604 includes a guide sleeve and a guide post. The guide sleeve is fixedly connected to the base plate 601, and the guide post is sleeved inside the guide sleeve, with its end fixedly connected to the top plate 602. Preferably, the second lifting drive unit 603 is a cylinder, and the guide assembly 604 consists of four sets, respectively located at the four corners of the top plate 602. When the second lifting drive unit 603 drives the top plate 602 to move, the guide assembly 604 can guide the lifting movement of the top plate 602. A detection switch is also installed on the base plate 601 to detect the position of the top plate.

[0037] The centering component 605 is fixed to the top plate 602 and is used to position the enclosure. The centering component 605 includes a centering base 6051, a centering block 6052, and a second locking component 6053. The centering base 6051 has mounting holes for mounting the centering block 6052. The centering block 6052 is disposed in the mounting holes, and a snap-fit ​​groove is formed on the side wall of the centering block 6052 along its circumference. The second locking component 6053 is disposed on the centering base 6051, and its end can snap into the snap-fit ​​groove. Different enclosure sizes require different sizes of centering blocks 6052; therefore, when changing the enclosure size, the centering block needs to be replaced. When replacing the centering block 6052, the second locking component 6053 can be screwed on to disengage it from the centering block 6052, so that the centering block 6052 can be removed and replaced with a centering block 6052 of a different specification.

[0038] For example, two sets of limiting components are also provided on the top surface of the top plate 602. When the gripper holds the box and places it on the slide table 60, the limiting components can limit the gripper. Stop components are also provided on the top surfaces of both ends of the frame 40. The stop components can limit the movement of the slide table 60.

[0039] like Figure 6 As shown, the heating mechanism 50 includes a heating bracket 501, a heating part 503, and an adjusting assembly 502 mounted on the frame 40. The adjusting assembly 502 is mounted on the heating bracket 501, and the heating part 503 is mounted on the adjusting assembly 502. The heating part 503 is in the form of a spiral coil and can be inserted into the crankshaft mounting hole of the housing to heat the housing around the crankshaft mounting hole. This significantly shortens the heating time of the engine housing and ensures uniform expansion of the crankshaft mounting hole, preventing poor assembly of the crankshaft and housing due to local overheating or insufficient heating. The adjusting assembly 502 includes an upper mounting plate, a lower mounting plate, an adjusting shaft, a fixing sleeve, and a locking sleeve. The upper mounting plate is mounted on the heating bracket 501, the fixing sleeve is mounted on the upper mounting plate, the adjusting shaft passes through the fixing sleeve, the locking sleeve is fitted on the adjusting shaft and located above the fixing sleeve, and the lower mounting plate is located at the lower end of the adjusting shaft. Adjusting the position of the locking sleeve on the adjusting shaft adjusts the vertical position of the heating part 503.

[0040] The heating mechanism 50 also includes a temperature sensor 504 mounted on the heating bracket 501. The temperature sensor 504 is used to detect the temperature of the crankshaft mounting hole in the housing in real time, so as to achieve quality control of the installation accuracy of the housing and crankshaft, and prevent the heating temperature from being too low, resulting in the crankshaft mounting hole being too small and the crankshaft not being installed properly, which in turn affects the assembly quality of the housing.

[0041] Preferably, the engine block crankshaft hot-fitting mechanism of this application further includes a spare parts carrying assembly 80, which is disposed on one side of the conveyor line and is used to carry spare parts for the connecting assembly 704 and the centering assembly 605. Figure 5 As shown, the spare parts carrier assembly 80 includes a spare parts carrier plate 801 and a detection sensor disposed on the spare parts carrier plate 801. The spare parts carrier plate 801 is provided with a mounting base for placing a centering block 6052 and a positioning hole for a positioning connection assembly 704. Multiple positioning holes and mounting bases can be provided to support centering blocks 6052 and connection assemblies 704 of various specifications.

[0042] In this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or device. Without further limitation, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the article or device that includes said element.

[0043] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0044] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if these modifications and variations fall within the scope of the claims of this application and their equivalents, the intent of this application also includes these modifications and variations.

Claims

1. A heat-fitting device for an engine housing and crankshaft, characterized in that, It includes a loading and unloading mechanism, a frame (40), a heating mechanism (50), a slide table (60), and a pull-down mechanism (70); The loading and unloading mechanism is located on one side of the frame (40). A conveyor line is provided below the loading and unloading mechanism. The engine box and crankshaft move along the conveyor line to the bottom of the loading and unloading mechanism. The loading and unloading mechanism can clamp the engine box and crankshaft, and realize the loading and unloading of the engine box and crankshaft between the conveyor line and the slide (60). The heating mechanism (50) is disposed at one end of the frame (40); the pull-down mechanism (70) is disposed at the other end of the frame (40); a first guide rail assembly (401) and a sliding drive unit (402) are disposed on the frame (40); the slide table (60) is disposed on the first guide rail assembly (401), and under the drive of the sliding drive unit (402), the slide table (60) can slide along the first guide rail assembly (401).

2. The engine housing and crankshaft hot-fitting equipment according to claim 1, characterized in that, The loading and unloading mechanism includes a three-axis truss (10), a housing clamping assembly (20), and a crankshaft clamping assembly (30); the housing clamping assembly (20) and the crankshaft clamping assembly (30) are both located at the Z-axis end of the three-axis truss (10); the housing clamping assembly (20) includes a first mounting plate (201), a gripper assembly (202), and a positioning assembly (203); the gripper assembly (202) and the positioning assembly (203) are both located on the first mounting plate (201), the gripper assembly (202) is used to clamp or release the housing, and the positioning assembly (203) is used to position the housing; the crankshaft clamping assembly (30) includes a second mounting plate (301) and a chuck (302) located on the second mounting plate (301), the chuck (302) being able to clamp or release the end of the crankshaft.

3. The engine housing and crankshaft hot-fitting equipment according to claim 2, characterized in that, The gripper assembly (202) is in multiple groups, and each group includes two gripper assemblies (202) arranged opposite to each other.

4. The engine housing and crankshaft hot-fitting equipment according to claim 2, characterized in that, The gripper assembly (202) includes a gripper drive unit (2021) and a gripper (2022) disposed at the end of the gripper drive unit (2021).

5. The engine housing and crankshaft hot-fitting equipment according to claim 2, characterized in that, The positioning component (203) includes a retractable positioning pin (2031) and a fixed positioning pin (2032); the retractable positioning pin (2031) and the fixed positioning pin (2032) are spaced apart on the first mounting plate (201).

6. The engine housing and crankshaft hot-fitting equipment according to claim 1, characterized in that, The pull-down mechanism (70) includes a first bracket (701), a second bracket (702), a rotary drive unit (703), a connecting component (704), and a first lifting drive unit (705). The first bracket (701) is mounted on the frame (40), and a second guide rail assembly (706) is mounted on the first bracket (701). The first lifting drive unit (705) is mounted on the first bracket (701). The second bracket (702) is mounted on the second guide rail assembly (706), and the rotary drive unit (703) is mounted on the second bracket (702). The connecting component (704) is connected to the output end of the rotary drive unit (703).

7. The engine housing and crankshaft hot-fitting equipment according to claim 6, characterized in that, The top of the connecting assembly (704) forms a first thread, and the lower end of the crankshaft forms a second thread. The rotation drive unit (703) can drive the connecting assembly (704) to rotate, so that the connecting assembly (704) and the crankshaft are threadedly connected.

8. The engine housing and crankshaft hot-fitting equipment according to claim 6, characterized in that, The second bracket (702) includes a bracket body (7021), a first locking component (7022), and a quick-release plate (7023); the bracket body (7021) has a first slot (7024) and a second slot (7025) with openings opposite to each other; the quick-release plate (7023) is inserted into the first slot (7024) and the second slot (7025), and the quick-release plate (7023) has a U-shaped groove with the opening direction in the same direction as the insertion direction; the connecting component (704) is engaged in the U-shaped groove; the first locking component (7022) is disposed on the bracket body (7021) and is used to press the quick-release plate (7023) in the axial direction.

9. The engine housing and crankshaft hot-fitting equipment according to claim 1, characterized in that, The slide (60) includes a base plate (601), a top plate (602), a second lifting drive unit (603), a guide assembly (604), and a centering assembly (605); the base plate (601) is disposed on the first guide rail assembly (401); the second lifting drive unit (603) is fixedly connected to the base plate (601), and its extended end passes through the base plate (601) and is fixedly connected to the lower surface of the top plate (602); the guide assembly (604) includes a guide sleeve and a guide post, the guide sleeve is fixedly connected to the base plate (601), the guide post is sleeved in the guide sleeve, and its end is fixedly connected to the top plate (602); the centering assembly (605) is fixedly connected to the top plate (602).

10. The engine housing and crankshaft hot-fitting equipment according to claim 9, characterized in that, The centering assembly (605) includes a centering base (6051), a centering block (6052), and a second locking assembly (6053); the centering base (6051) is provided with a mounting hole for mounting the centering block (6052); the centering block (6052) is disposed in the mounting hole, and a snap-fit ​​groove is formed on the side wall of the centering block (6052) along the circumference of the centering block (6052); the second locking assembly (6053) is disposed on the centering base (6051), and its end can snap into the snap-fit ​​groove.

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