A housing assembly and carrier

Abstract

The application relates to the technical field of spacecraft assembly, and particularly discloses a shell assembly and a carrier, wherein the shell assembly comprises a first shell and a second shell; one of the first shell and the second shell is provided with a plurality of positioning pieces; and the other of the first shell and the second shell is provided with positioning holes corresponding to the positioning pieces; and the lengths of the positioning pieces on the first shell or the second shell are sequentially reduced. The structure corrects the misalignment of the positioning holes caused by the micro-deformation of the shell under the guidance of the end guiding conical surface of the positioning pieces, so that the four positioning pieces sequentially enter the positioning holes, the misalignment of the connecting holes in each quadrant region on the butt joint surface of the second shell is corrected, the connecting bolts smoothly enter the connecting holes, the butt joint surface of the weak rigid shell of the solid carrier is smoothly attached, and the butt joint surface is smoothly butted, so that the operation is reliable, efficient and convenient.

Description

Technical Field

[0001] This invention belongs to the field of aerospace vehicle assembly technology, specifically relating to a shell assembly and a launch vehicle. Background Technology

[0002] As the carrying capacity of solid rocket vehicles continues to increase, the diameter of the shell responsible for structural load-bearing is becoming larger and larger. Due to their large structural size and heavy weight, large solid rocket vehicles are generally docked in a horizontal position. Because of factors such as the slight deformation of the shell in the diameter direction, the weak rigidity of the shell becomes more and more obvious as the shell diameter increases. This makes it difficult to align the positioning pin holes and connecting bolt holes on the docking surface, which brings great difficulty to the docking and assembly of large, weakly rigid shells on solid rocket vehicles and results in low docking efficiency. Summary of the Invention

[0003] This invention aims to at least partially solve one of the aforementioned technical problems in the prior art. To this end, one object of the invention is to provide a housing assembly that allows for efficient and precise docking between its two housings. Another object of the invention is to provide a carrier.

[0004] To achieve the above objectives, a first aspect of the present invention provides a housing assembly comprising:

[0005] First shell, second shell;

[0006] Multiple positioning elements are provided on one of the first housing and the second housing;

[0007] The other of the first housing and the second housing is provided with a positioning hole corresponding to the positioning member;

[0008] The lengths of the positioning elements on the first or second housing decrease sequentially.

[0009] Through the above technical solution, the positioning component is installed on either the first or second shell, and the positioning hole is located on the other shell and corresponds to the positioning component. Since the first and second shells are generally large, weakly rigid shells, they are usually spliced ​​face-to-face. The preferred installation method for the positioning component is to set it on the mating surface at the end of the first or second shell. For example, if we define the first shell as the aft cabin shell and the second shell as the fore cabin shell, when the positioning component is installed on the first mating surface of the first shell (aft cabin shell), the positioning hole is located on the second mating surface of the second shell (fore cabin shell). The main function of the positioning component is to coordinate the first shell (aft cabin shell) and the second shell (fore cabin shell). The assembly and positioning are performed to ensure that the mating surfaces of the first shell (rear cabin shell) and the second shell (front cabin shell) are precisely aligned during assembly. The lengths of the positioning pieces on the first shell (rear cabin shell) decrease sequentially. As the mating surfaces of the first shell (rear cabin shell) and the second shell (front cabin shell) gradually approach each other, the longest positioning piece on the first shell (rear cabin shell) is inserted into the corresponding positioning hole on the second shell (front cabin shell). Then, the second longest positioning piece is inserted into the corresponding positioning hole, until the shortest positioning piece is inserted into the corresponding positioning hole. At the same time, the accuracy of the assembly can be ensured by using multiple positioning pieces.

[0010] Furthermore, the number of positioning elements is four, namely, the first positioning element, the second positioning element, the third positioning element, and the fourth positioning element;

[0011] The first positioning member is installed in the first quadrant region of the end of the first housing or the second housing, the second positioning member is installed in the second quadrant region of the end of the first housing or the second housing, the third positioning member is installed in the third quadrant region of the end of the first housing or the second housing, and the fourth positioning member is installed in the fourth quadrant region of the end of the first housing or the second housing.

[0012] The lengths of the first positioning element, the second positioning element, the third positioning element, and the fourth positioning element decrease sequentially, with the decrease in length ranging from 0 to 5 mm.

[0013] Through the above technical solution, since the first shell (rear cabin shell) and the second shell (front cabin shell) are large, weakly rigid shell structures, the shells of the first shell (rear cabin shell) and the second shell (front cabin shell) will undergo slight deformation during the hoisting and splicing process. The design of this application is to install at least one positioning component in each of the four quadrants of the mating surface of the first shell (rear cabin shell). The four positioning components position the four quadrants of the mating surface of the first shell (rear cabin shell) and the second shell (front cabin shell). Since the length of the four positioning components decreases sequentially, when the mating surfaces of the first shell (rear cabin shell) and the second shell (front cabin shell) come closer to each other, the four positioning components sequentially correct the deformation of the four quadrants of the mating surface, ensuring that the mating surfaces of the first shell (rear cabin shell) and the second shell (front cabin shell) are accurately aligned and spliced ​​together.

[0014] Furthermore, the first housing or the second housing is provided with a plurality of connecting bolts, and the second housing or the first housing is provided with connecting holes corresponding to the connecting bolts.

[0015] Through the above technical solution, the connecting bolts mainly serve to fasten the spliced ​​first shell (rear cabin shell) and second shell (front cabin shell). Multiple connecting bolts are evenly arranged circumferentially on the first or second shell, and the number of connecting bolts is preferably 24. After the four positioning parts correct the deformation of the four quadrant areas of the mating surface of the first shell (rear cabin shell) and the second shell (front cabin shell) in sequence, the end of the connecting bolt on one mating surface will be aligned with the connecting hole on the other mating surface. After the mating surfaces of the first shell (rear cabin shell) and the second shell (front cabin shell) are accurately aligned, the connecting bolts can be inserted into the connecting holes. After the connecting bolts are fixedly connected to the connecting holes, the firmness of the spliced ​​first shell (rear cabin shell) and second shell (front cabin shell) can be guaranteed.

[0016] Furthermore, the fitting clearance between the first positioning member, the second positioning member, the third positioning member, and the fourth positioning member and the positioning hole is 0.1mm to 0.2mm, and the installation clearance between the connecting bolt and the connecting hole is 1mm to 2mm.

[0017] Furthermore, the first positioning element, the second positioning element, the third positioning element, and the fourth positioning element are all positioning pins, and the ends of the positioning pins are equipped with locking nuts. The first positioning element, the second positioning element, the third positioning element, and the fourth positioning element can be fixed to the first housing or the second housing by the locking nuts.

[0018] Through the above technical solution, the positioning pin plays a positioning role, and the locking nut plays a role in fixing and locking the positioning pin after it is installed.

[0019] Furthermore, the ends of the first positioning member, the second positioning member, the third positioning member, the fourth positioning member, and the connecting bolt are all provided with guide surfaces, which are preferably guide cone surfaces.

[0020] With the above technical solution, the ends of the first positioning component, the second positioning component, the third positioning component, and the fourth positioning component are equipped with guide cone surfaces, which facilitates their insertion into the positioning holes.

[0021] Furthermore, the first positioning member, the second positioning member, the third positioning member, and the fourth positioning member are sequentially arranged on the end face of the first housing or the second housing;

[0022] The fourth positioning member is installed on the end face of the first housing or the second housing at a position below the center of gravity of the first housing or the second housing, and the fourth quadrant region is located below the center of gravity of the first housing or the second housing.

[0023] Through the above technical solution, due to the inherent weak rigidity of the first shell (rear cabin shell) and the second shell (front cabin shell), the shells of the first shell (rear cabin shell) and the second shell (front cabin shell) will undergo slight deformation during the hoisting and splicing process. In particular, the bottom area of ​​the first shell (rear cabin shell) and the second shell (front cabin shell) will be severely deformed. Therefore, the fourth quadrant area is set as the area below the center of gravity of the first shell (rear cabin shell) and the second shell (front cabin shell). The fourth positioning component, as the last positioning component, corrects the deformed area below the first shell (rear cabin shell) and the second shell (front cabin shell).

[0024] Furthermore, the length of the fourth positioning element is greater than the length of the connecting bolt.

[0025] With the above technical solution, after the four positioning components and connecting bolts are installed on the first shell (rear cabin shell), since the length of the connecting bolts is less than the length of each positioning component, when the four positioning components are inserted into the corresponding positioning holes for positioning, the ends of the connecting bolts will not touch the mating surface of the second shell (front cabin shell). When there is shaking during the hoisting and docking of the first shell (rear cabin shell) and the second shell (front cabin shell), before the shortest positioning component is inserted into the positioning hole, the ends of the connecting bolts will not touch the second shell (front cabin shell). In this way, the positioning operation procedure of each positioning component will not be affected.

[0026] A second aspect of the invention provides a carrier comprising the aforementioned housing assembly.

[0027] A third aspect of the present invention provides a method for docking a housing assembly, comprising the following steps:

[0028] S1. Provide a first positioning member, a second positioning member, a third positioning member, and a fourth positioning member with successively decreasing lengths, and insert the ends of the first positioning member, the second positioning member, the third positioning member, and the fourth positioning member into the mounting holes in the respective quadrant areas of the end face of the first housing.

[0029] S2. Tighten the first positioning member, the second positioning member, the third positioning member, and the fourth positioning member;

[0030] S3. Install the connecting bolts on the first housing;

[0031] S4. Initially adjust the docking position of the first shell and the second shell to align the axes and quadrant regions of the first shell and the second shell.

[0032] S5. Slowly move the first housing and the second housing towards each other so that the mating surfaces of the first housing and the second housing gradually come together. Align the ends of the first positioning member, the second positioning member, the third positioning member and the fourth positioning member with the positioning holes on the end face of the second housing in sequence, and insert them into the positioning holes.

[0033] S6. Continue to move the first housing and the second housing slowly toward each other until the end of the connecting bolt enters the connecting hole on the end face of the second housing, so that the mating surfaces of the first housing and the second housing gradually come together and fit together.

[0034] In summary, the beneficial technical effects of this application are as follows: This application uses multiple positioning components to position the first and second shells that are spliced ​​together. When the first and second shells are docked, the longest positioning component on the first shell is positioned and docked with the positioning hole on the second shell. Since the length of each positioning component decreases sequentially, after the first positioning component docks, the end of the subsequent positioning component will not touch the end face of the second shell. As the docking surfaces of the first and second shells gradually approach each other, the guide cone surfaces at the ends of the second, third, and fourth positioning components are sequentially inserted into the positioning holes on the end face of the second shell. This structure, through the positioning components with sequentially decreasing lengths in the four quadrant areas of the first shell, corrects the misalignment of the positioning holes caused by the micro-deformation of the shell under the guidance of the guide cone surfaces at the ends of the positioning components. This ensures that the four positioning components enter the positioning holes sequentially, and after the misalignment of the connecting holes in each quadrant area of ​​the docking surface of the second shell is corrected, the connecting bolts can then smoothly enter the connecting holes, ensuring that the weak rigid shell docking surfaces of the solid launch vehicle can be smoothly fitted together, thereby achieving the purpose of smooth and reliable docking of the docking surfaces. The operation is reliable, efficient, and convenient. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the docking state of the front and rear hulls when the first positioning component of this application enters the positioning hole;

[0037] Figure 2 This is a schematic diagram of the docking state of the front and rear hulls when the fourth positioning component of this application enters the positioning hole;

[0038] Figure 3 This is a schematic diagram showing the state after the front and rear hull surfaces of this application are fitted together.

[0039] Figure 4 This is a schematic diagram showing the fastened state of the front and rear hull surfaces after they have been fitted together in this application.

[0040] Figure 5 This is a schematic diagram showing the arrangement of the various positioning components and connecting bolts on the mating surface of the first housing in this application;

[0041] Figure 6 This is a structural schematic diagram of the positioning component in this application.

[0042] Explanation of reference numerals in the attached drawings: 1. First housing; 11. First mating surface; 2. Second housing; 21. Second mating surface; 3. Positioning element; 30. Locking nut; 31. First positioning element; 32. Second positioning element; 33. Third positioning element; 34. Fourth positioning element; 35. Guide surface;

[0043] 4. Positioning hole; 5. Connecting bolt; 6. Connecting hole; 7. Nut. Detailed Implementation

[0044] The present invention will be described in detail below with reference to specific embodiments and examples, thereby making the advantages and various effects of the present invention more clearly apparent. Those skilled in the art should understand that these specific embodiments and examples are for illustrative purposes only and are not intended to limit the present invention.

[0045] Reference Figure 1 A housing assembly includes a first housing 1 and a second housing 2. One of the first housing 1 and the second housing 2 is provided with a plurality of positioning elements 3, and the other of the first housing 1 and the second housing 2 is provided with positioning holes 4 corresponding to the positioning elements 3. The lengths of the positioning elements 3 on the first housing 1 or the second housing 2 decrease sequentially.

[0046] Since the first shell 1 and the second shell 2 are generally large, weakly rigid shells, they are mainly spliced ​​together face-to-face. The preferred installation method for the positioning component 3 is to place it on the mating surface at the end of the first shell 1 or the second shell 2. For example, if we define the first shell 1 as the aft shell and the second shell 2 as the fore shell, when the positioning component 3 is installed on the first mating surface 11 of the first shell 1 (aft shell), the positioning hole 4 is set on the second mating surface 21 of the second shell 2 (fore shell). The main function of the positioning component 3 is to position the first shell 1 (aft shell) and the second shell 2 (fore shell) during splicing, ensuring the proper connection between the first shell 1 (aft shell) and the second shell 2 (fore shell). When the two shells 2 (front cabin shell) are assembled, their mating surfaces can be precisely aligned. The lengths of the positioning pieces 3 on the first shell 1 (rear cabin shell) of this application decrease sequentially. As the mating surfaces of the first shell 1 (rear cabin shell) and the second shell 2 (front cabin shell) gradually approach each other, the longest positioning piece on the first shell 1 (rear cabin shell) is inserted into the corresponding positioning hole 4 on the second shell 2 (front cabin shell). Then, the positioning piece of the second longest length is inserted into the corresponding positioning hole 4, until the shortest positioning piece is inserted into the corresponding positioning hole 4. At the same time, the accuracy of the mating can be ensured by multiple positioning pieces.

[0047] In this embodiment, the number of positioning elements 3 is set to four, namely the first positioning element 31, the second positioning element 32, the third positioning element 33 and the fourth positioning element 34.

[0048] Reference Figure 5 The first positioning member 31 is installed in the first quadrant region at the end of the first housing 1 or the second housing 2, the second positioning member 32 is installed in the second quadrant region at the end of the first housing 1 or the second housing 2, the third positioning member 33 is installed in the third quadrant region at the end of the first housing 1 or the second housing 2, and the fourth positioning member 34 is installed in the fourth quadrant region at the end of the first housing 1 or the second housing 2.

[0049] The lengths of the first positioning member 31, the second positioning member 32, the third positioning member 33, and the fourth positioning member 34 decrease sequentially, with the decrease in length ranging from 0 to 5 mm.

[0050] Since the first shell 1 (rear cabin shell) and the second shell 2 (front cabin shell) are large, weakly rigid shell structures, the shells of the first shell 1 (rear cabin shell) and the second shell 2 (front cabin shell) will undergo slight deformation during the hoisting and splicing process. The design of this application is to install at least one positioning component in each of the four quadrants of the mating surface of the first shell 1 (rear cabin shell). The four positioning components position the four quadrants of the mating surface of the first shell 1 (rear cabin shell) and the second shell 2 (front cabin shell). Since the lengths of the four positioning components decrease sequentially, when the mating surfaces of the first shell 1 (rear cabin shell) and the second shell 2 (front cabin shell) come closer to each other, the four positioning components will sequentially correct the deformation of the four quadrants of the mating surface, ensuring that the mating surfaces of the first shell 1 (rear cabin shell) and the second shell 2 (front cabin shell) are accurately aligned and spliced ​​together.

[0051] Furthermore, the first shell 1 or the second shell 2 is provided with multiple connecting bolts 5, and the second shell 2 or the first shell 1 is provided with connecting holes 6 corresponding to the connecting bolts 5. The connecting bolts 5 mainly serve to fasten the spliced ​​first shell 1 (rear cabin shell) and second shell 2 (front cabin shell). The multiple connecting bolts 5 are evenly arranged in a circumferential direction on the first shell 1 or the second shell 2. The number of connecting bolts 5 is preferably 24. Taking the case where the connecting bolts 5 and four positioning parts are all installed on the first shell 1 as an example, after the four positioning parts correct the deformation of the four quadrant areas of the mating surface of the first shell 1 (rear cabin shell) and the second shell 2 (front cabin shell) in sequence, the end of the connecting bolt 5 on the first mating surface 11 will be aligned with the connecting hole 6 on the second mating surface 21. After the mating surfaces of the first shell 1 (rear cabin shell) and the second shell 2 (front cabin shell) are accurately aligned, the connecting bolt 5 can be inserted into the connecting hole 6. After the connecting bolt 5 is fixedly connected to the connecting hole 6, the firmness of the spliced ​​first shell 1 (rear cabin shell) and the second shell 2 (front cabin shell) can be guaranteed.

[0052] After docking, the fit clearance between the first positioning component 31, the second positioning component 32, the third positioning component 33 and the fourth positioning component 34 and the positioning hole 4 is 0.1mm to 0.2mm, and the installation clearance between the connecting bolt 5 and the connecting hole 6 is 1mm to 2mm.

[0053] In this embodiment, refer to Figure 6The first positioning element 31, the second positioning element 32, the third positioning element 33, and the fourth positioning element 34 are all positioning pins, and the ends of the positioning pins are equipped with locking nuts 30. The first positioning element 31, the second positioning element 32, the third positioning element 33, and the fourth positioning element 34 can be fixed on the first housing 1 or the second housing 2 by locking nuts 30. The ends of the first positioning element 31, the second positioning element 32, the third positioning element 33, and the fourth positioning element 34 are all provided with guide surfaces 35, which are preferably guide cone surfaces. The first positioning element 31, the second positioning element 32, the third positioning element 33, and the fourth positioning element 34 can be easily inserted into the positioning hole 4 through the guide cone surfaces at their ends.

[0054] In addition, the end of the connecting bolt 5 is also provided with a guide surface, preferably a guide cone surface, so that the connecting bolt 5 can be easily inserted into the connecting hole 6 through the guide cone surface at the end.

[0055] Continue to refer to Figure 5 Taking the case where all four positioning components are installed on the first housing 1 as an example, the first positioning component 31, the second positioning component 32, the third positioning component 33 and the fourth positioning component 34 are arranged sequentially on the mating surface 11 of the first housing 1.

[0056] The fourth positioning member 34 is installed on the mating surface 11 of the first housing 1 at a position below the center of gravity of the first housing 1, and the fourth quadrant region is located below the center of gravity of the first housing 1.

[0057] Due to the inherent weak rigidity of the first shell 1 (rear cabin shell) and the second shell 2 (front cabin shell), the shells of the two shells will undergo slight deformation during the hoisting and splicing process. In particular, the bottom area of ​​the first shell 1 (rear cabin shell) and the second shell 2 (front cabin shell) will be severely deformed. Therefore, the fourth quadrant area is set as the area below the center of gravity of the first shell 1 (rear cabin shell) and the second shell 2 (front cabin shell). The fourth positioning component 34 serves as the last positioning component to correct the deformed area below the first shell 1 (rear cabin shell) and the second shell 2 (front cabin shell).

[0058] In addition, the length of the fourth positioning element 34 is greater than the length of the connecting bolt 5.

[0059] After the four positioning components and connecting bolts 5 are installed on the first shell 1 (rear cabin shell), since the length of the connecting bolts 5 is less than the length of each positioning component, when the four positioning components are inserted into the corresponding positioning holes 4 for positioning, the ends of the connecting bolts 5 will not touch the second mating surface 21 of the second shell 2 (front cabin shell). When there is shaking during the hoisting and docking of the first shell 1 (rear cabin shell) and the second shell 2 (front cabin shell), before the shortest positioning component is inserted into the positioning hole 4, the ends of the connecting bolts 5 will not touch the second shell 2 (front cabin shell). In this way, the positioning operation procedure of each positioning component will not be affected.

[0060] Based on the same technical concept, this application embodiment also provides a carrier that includes the above-mentioned shell assembly. The shell assembly of the carrier is easy to assemble and the assembly positioning is accurate.

[0061] Based on the same technical concept, and referring to Figures 1 to 4 This application also provides a docking method for a housing assembly, comprising the following steps:

[0062] Step 1: Provide a positioning component 31, a second positioning component 32, a third positioning component 33, and a fourth positioning component 34 with lengths decreasing by 3mm in succession. Each positioning component is preferably a positioning pin.

[0063] Step 2: Install the first positioning component 31, the second positioning component 32, the third positioning component 33, and the fourth positioning component 34 into the positioning pin holes in quadrants I, II, III, and IV of the first housing 1 (rear compartment housing), respectively, and limit their position by locking the nut 30.

[0064] Step 3: Provide a connecting bolt 5 that is 3mm shorter than the fourth positioning piece 34. After the positioning pins in all four quadrant areas have reliably entered the positioning holes 4, ensure that the connecting bolt 5 is basically aligned with the corresponding connecting hole 6 before entering the connecting hole 6.

[0065] Step 4: Install the connecting bolts 5 into the bolt holes of the first housing 1 (rear compartment housing) respectively, and tighten the nuts;

[0066] Step 5: Initial adjustment of the front and rear hulls. By observing the positioning parts 3 and corresponding positioning holes 4 in the four quadrant areas of the front and rear hulls, align the axes and quadrants of the two hulls.

[0067] Step 6: Slowly move the front and rear hulls towards each other, so that the first docking surface 11 and the second docking surface 12 of the hull gradually come together. At the same time, pay attention to the alignment of the first positioning member 31 with the corresponding positioning hole 4 on the quadrant of the second hull 2.

[0068] Step 7: When the first positioning component 31 slowly enters the positioning hole 4 in quadrant I of the second housing 2 (front housing) through the guide cone surface, carefully observe that the second positioning component 32 is aligned with the positioning pin hole in quadrant II of the second housing 2 (front housing);

[0069] Step 8: When the second positioning component 32 slowly enters the positioning hole 4 in quadrant II of the second housing 2 (front housing) through the guide cone surface, carefully observe that the third positioning component 33 is aligned with the positioning hole 4 in quadrant III of the second housing 2 (front housing);

[0070] Step 9: When the third positioning component 33 slowly enters the positioning hole 4 in quadrant III of the second housing 2 (front housing) through the guide cone surface, carefully observe that the fourth positioning component 34 is aligned with the positioning hole 4 in quadrant IV of the second housing 2 (front housing).

[0071] Step 10: When the fourth positioning component 34 slowly enters the positioning hole 4 in quadrant IV of the second housing 2 (front housing) through the guide cone surface, carefully observe that the connecting bolt 5 is aligned with the connecting hole 6 of the second housing 2 (front housing);

[0072] Step 11: Continue to slowly move the front and rear cabin shells towards each other. The connecting bolts 5 slowly enter the connecting holes 6 of the second shell 2 (front cabin shell) through the guide cone surface, so that the mating surfaces of the front and rear cabin shells gradually come together and fit together.

[0073] Step 12: Insert the nut 7 and washer into the connecting bolt 5 and tighten them with torque. At this point, the docking of the first shell 1 (rear cabin shell) and the second shell 2 (front cabin shell) can be completed.

[0074] In summary, this application uses multiple positioning elements 3 to position the first housing 1 and the second housing 2 that are spliced ​​together. When the first housing 1 and the second housing 2 are mated together, the longest positioning element on the first housing 1 is positioned and mated with the positioning hole 4 on the second housing 2. Since the lengths of each positioning element decrease sequentially, and the length of the connecting bolt 5 is less than the length of the shortest positioning element, after the first positioning element 31 is mated, the end of the subsequent positioning element will not touch the end face of the second housing 2. As the mating surfaces of the first housing 1 and the second housing 2 gradually approach each other, the guides at the ends of the second positioning element 32, the third positioning element 33, and the fourth positioning element 34 are sequentially aligned. The cone-shaped pins are inserted into the positioning holes 4 on the end face of the second housing 2. This structure uses positioning pins with progressively decreasing lengths in the four quadrant regions of the first housing 1 to correct the misalignment of the positioning holes caused by the slight deformation of the housing under the guidance of the cone-shaped pins. This ensures that the four positioning pins enter the positioning holes 4 in sequence, and after the misalignment of the bolt holes in each quadrant region of the mating surface of the second housing 2 is corrected, the connecting bolts 5 can then smoothly enter the connecting holes 6. This ensures that the mating surfaces of the weak rigid housings of the solid vehicle can fit together smoothly, thereby achieving the purpose of smooth and reliable mating. The operation is reliable, efficient, and convenient, and has high application value.

[0075] It should be noted that all directional indications in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0076] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0077] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0078] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0079] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A housing assembly, characterized by, The shell assembly comprises: a first shell and a second shell; one of the first shell and the second shell is provided with a plurality of positioning members; the other of the first shell and the second shell is provided with positioning holes corresponding to the positioning members; the lengths of the positioning members on the first shell or the second shell decrease in turn; the first shell or the second shell is provided with a plurality of connecting bolts, and the second shell or the first shell is provided with connecting holes corresponding to the connecting bolts; the lengths of the connecting bolts are smaller than the lengths of the positioning members; the number of the positioning members is four, and the four positioning members are respectively a first positioning member, a second positioning member, a third positioning member and a fourth positioning member; the first positioning member is installed at a first quadrant region of an end of the first shell or the second shell, the second positioning member is installed at a second quadrant region of the end of the first shell or the second shell, the third positioning member is installed at a third quadrant region of the end of the first shell or the second shell, and the fourth positioning member is installed at a fourth quadrant region of the end of the first shell or the second shell.

2. The housing assembly of claim 1, wherein, The lengths of the first positioning member, the second positioning member, the third positioning member and the fourth positioning member decrease in turn, and the length decrease value ranges from 0 mm to 5 mm.

3. The housing assembly of claim 2, wherein, The first positioning member, the second positioning member, the third positioning member and the fourth positioning member are arranged on the end face of the first shell or the second shell in turn. The installation position of the fourth positioning member on the end face of the first shell or the second shell is below the center of gravity of the first shell or the second shell.

4. The housing assembly of claim 1, wherein, The fitting gap between the first positioning member, the second positioning member, the third positioning member and the fourth positioning member and the positioning holes is 0.1 mm to 0.2 mm, and the installation gap between the connecting bolts and the connecting holes is 1 mm to 2 mm.

5. The housing assembly of claim 1, wherein, The first positioning member, the second positioning member, the third positioning member and the fourth positioning member are all positioning pins, the end of the positioning pin is provided with a locking nut, and the first positioning member, the second positioning member, the third positioning member and the fourth positioning member are fixed on the first shell or the second shell through the locking nut.

6. The housing assembly of claim 5, wherein, The end of the first positioning member, the second positioning member, the third positioning member, the fourth positioning member and the connecting bolts is provided with a guide surface.

7. A carrier, characterized by The shell assembly comprises the shell assembly according to any one of claims 1 to 6.

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