Riveting device for differential mechanism

Abstract

The utility model discloses a riveting device for a differential mechanism. The riveting device for the differential mechanism comprises a rack; the fixing support is arranged on the rack, the fixing support is provided with a mounting face, the mounting face is an inclined face, an included angle is formed between the mounting face and the vertical direction, and the mounting face is used for fixing the differential mechanism; the hydraulic system is arranged on the rack and comprises a hydraulic oil cylinder, the hydraulic oil cylinder is provided with a piston rod capable of moving in the vertical direction, and the piston rod is arranged above the fixing support; and the riveting head is arranged at the lower end of the piston rod and is used for riveting the differential mechanism. According to the riveting device for the differential mechanism, manual riveting is replaced, the problems that noise is large due to knocking in the riveting process and workers are injured by impact force are solved, time and labor are saved, the labor intensity of the workers is reduced, the riveting time of the differential mechanism is shortened, the assembling efficiency of the differential mechanism is improved, and the labor intensity of the workers is reduced. And the assembly qualification rate of the differential mechanism is improved, and the press-fitting success rate is increased.

Description

Technical Field

[0001] The utility model relates to the field of differential assembly equipment, in particular to a riveting device for a differential. Background Art

[0002] The differential is one of the important components of the transmission. Its function is to meet the requirement of different wheel speeds on both sides when the car turns. The differential is mainly composed of the differential housing, half-shaft gears, planetary gears, planetary gear shafts, output gear rings, cylindrical pins and adjustment washers. Among them, the cylindrical pins are often installed in the pin holes of the differential housing at the end of the differential assembly process. The cylindrical pins pass through the differential housing and the planetary gear shaft at the same time, which can fix the planetary gear shaft and prevent the planetary gear shaft from moving during operation.

[0003] However, the cylindrical pin and the differential housing have a clearance fit, one end of the cylindrical pin is limited by the end face, and the other end is riveted to the differential housing, so that the inner wall of the pin hole is deformed to prevent the cylindrical pin from falling out. In the related art, the differential pin hole is mostly riveted manually, and the inner wall of the pin hole is deformed by the combination of a gun and a hammer. Manual positioning often has the problem of low installation qualification rate and high labor intensity. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a riveting device for a differential, which replaces manual riveting, saves time and effort, reduces the labor intensity of workers, shortens the riveting time, and improves the assembly efficiency and qualified rate of the differential.

[0005] According to the embodiment of the utility model, the riveting device for the differential includes: a frame; a fixed bracket, the fixed bracket is arranged on the frame, the fixed bracket has a mounting surface, the mounting surface is an inclined surface having an angle with the vertical direction, and the mounting surface is used to fix the differential; a hydraulic system, the hydraulic system is arranged on the frame, the hydraulic system includes a hydraulic cylinder, the hydraulic cylinder has a piston rod movable in the up and down directions, the piston rod is arranged above the fixed bracket; a riveting head, the riveting head is arranged at the lower end of the piston rod, and is used to rivet the differential.

[0006] The riveting device for the differential according to the embodiment of the utility model replaces manual riveting, solves the problem of loud noise caused by knocking during riveting and the problem of harm to workers caused by impact force, is simple and convenient to operate, saves time and effort in manual operation, reduces the labor intensity of workers, greatly shortens the riveting time of the differential, and greatly improves the assembly efficiency of the differential. In addition, the riveting device adopts a hydraulic system, the output of the hydraulic pressing force is more uniform, the installation power is more stable, the riveting position and the riveting stroke can be accurately controlled, which is conducive to improving the assembly qualification rate of the differential, improving the success rate of press-fitting, avoiding the cylindrical pin from coming out, and saving the production cost of the differential to a certain extent.

[0007] In addition, the riveting device for a differential according to the utility model may also have the following additional technical features:

[0008] In some embodiments, the frame includes: a base, the fixed bracket is fixed on the base; a column frame, the column frame is supported on the base, and the hydraulic cylinder is fixed on the column frame; and an adjustment caster, the adjustment caster is arranged at the lower end of the base.

[0009] In some embodiments, a cross section of the fixing bracket perpendicular to the mounting surface is triangular.

[0010] In some embodiments, the fixing bracket has an installation space therein, the installation surface has an installation hole connected to the installation space, and at least a portion of the differential extends into the installation space through the installation hole.

[0011] In some embodiments, a plurality of connection holes are provided on the mounting surface, and the plurality of connection holes are located outside the mounting hole and are spaced apart along the circumferential direction of the mounting hole.

[0012] In some embodiments, the plurality of connection holes are divided into a plurality of groups, each group includes two connection holes arranged opposite to each other in a radial direction of the mounting hole, and there are at least two groups of connection holes where the distances between the two connection holes are unequal.

[0013] In some embodiments, the riveting device for the differential further includes: a guide sleeve, the guide sleeve is fixed on the frame, and the piston rod is inserted into the guide sleeve.

[0014] In some embodiments, the riveting device for the differential also includes: a dial indicator, which is used to measure the movement distance of the riveting head in the up and down directions; and / or, also includes: a limit member, which is mounted on the riveting head and can be adjusted in position in the up and down directions of the riveting head.

[0015] In some embodiments, the riveting device for the differential further includes a protective cover, which is arranged outside the frame and includes: a protective frame, the protective frame having a hollow area, and a transparent plate, and the transparent plate is arranged in the hollow area.

[0016] In some embodiments, the hollow area includes an observation hollow area, the observation hollow area includes a first area and a second area, the first area is located above the second area, and the second area is arranged opposite to the fixed bracket; the transparent plate includes an observation plate, the observation plate includes a fixed plate and a movable plate, the fixed plate is arranged in the first area and fixed on the protective frame, and the movable plate is movably arranged on the protective frame in the up and down directions to open or block the second area.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 It is a structural schematic diagram of the cooperation between the riveting device for differential and the differential according to the embodiment of the utility model;

[0020] Figure 2 This is a front view of a frame of a riveting device for a differential according to an embodiment of the utility model;

[0021] Figure 3 It is a left view of a frame of a riveting device for a differential according to an embodiment of the utility model;

[0022] Figure 4 It is a schematic diagram of the coordination of a riveting head, a hydraulic cylinder and a dial indicator of a riveting device for a differential according to an embodiment of the utility model;

[0023] Figure 5 It is a three-dimensional view of a fixing bracket of a riveting device for a differential according to an embodiment of the utility model;

[0024] Figure 6 This is an oil circuit diagram of a hydraulic system of a riveting device for a differential according to an embodiment of the utility model;

[0025] Figure 7 It is a stereoscopic view of a protective cover of a riveting device for a differential according to an embodiment of the utility model.

[0026] Reference numerals:

[0027] 100. Riveting device;

[0028] 1. Frame; 11. Base; 12. Column frame; 13. Adjusting casters;

[0029] 2. Fixing bracket; 21. Mounting surface; 211. Mounting hole; 212. Connecting hole; 22. Mounting space;

[0030] 3. Hydraulic system; 31. Hydraulic cylinder; 311. Piston rod; 312. First chamber; 313. Second chamber; 32. Oil tank; 33. Hand pump; 34. Reversing valve; 35. Check valve; 36. Bypass valve;

[0031] 4. Riveting head;

[0032] 5. Guide sleeve;

[0033] 6. Dial indicator;

[0034] 7. Protective cover; 71. Protective frame; 72. Transparent plate; 721. Moving plate; 722. Handle; 73. Observation hollow area; 731. First area; 732. Second area;

[0035] 200. Differential. DETAILED DESCRIPTION

[0036] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] The following describes a riveting device 100 for a differential 200 according to an embodiment of the present invention with reference to the accompanying drawings.

[0041] like Figure 1 As shown, the riveting device 100 for the differential 200 according to the embodiment of the utility model comprises: a frame 1, a fixing bracket 2, a hydraulic system 3 and a riveting head 4.

[0042] Specifically, refer to the attached Figure 2 and attached Figure 3 As shown, the frame 1 can play a supporting and fixing role, ensuring the reliability and stability of the riveting device 100 for the differential 200. Figure 1 and attached Figure 5 As shown, the fixing bracket 2 is arranged on the frame 1, and the fixing bracket 2 has a mounting surface 21, and the mounting surface 21 is in the vertical direction (refer to the attached Figure 1 The mounting surface 21 is used to fix the differential 200. Figure 1 and attached Figure 6 As shown, the hydraulic system 3 is arranged on the frame 1, and the hydraulic system 3 includes a hydraulic cylinder 31, and the hydraulic cylinder 31 has a vertical direction (such as Figure 1 As shown in the figure, a movable piston rod 311 is provided above the fixed bracket 2, and a riveting head 4 is provided at the lower end of the piston rod 311 for riveting the differential 200.

[0043] It can be understood that the mounting surface 21 is an inclined surface having an angle with the vertical direction. When the differential 200 is mounted on the fixing bracket 2, the differential 200 also has a certain angle with the vertical direction. Since the cylindrical pins of the differential 200 are placed along the axial direction of the differential 200, the extension direction of the cylindrical pins of the differential 200 is aligned with the moving direction of the riveting head 4 (see the attached drawing). Figure 1 When the riveting device 100 is riveting the differential 200, the riveting head 4 can deform part of the shell end surface of the differential 200 to prevent the cylindrical pin from falling out of the pin hole.

[0044] It should be noted that, compared with the manual riveting in the prior art, the riveting device 100 for the differential 200 according to the embodiment of the utility model solves the problem of loud noise generated by knocking during riveting and the problem of harm to the staff caused by the impact force, and the operation is simple and convenient, which saves time and effort in manual operation and reduces the labor intensity of workers. In addition, the riveting device 100 adopts a hydraulic system 3, the output of the hydraulic pressing force is more uniform, the installation power is more stable, the riveting position and the riveting stroke can be accurately controlled, which is conducive to improving the assembly qualification rate of the differential 200, improving the success rate of press-fitting, avoiding the cylindrical pin from coming out, and saving the production cost of the differential 200 to a certain extent.

[0045] Furthermore, the traditional manual riveting process is cumbersome and inefficient. The riveting time for a single differential is about 30 minutes. However, the riveting device 100 for the differential 200 using the embodiment of the utility model only takes about 3 minutes to complete the riveting, which greatly shortens the riveting time of the differential 200 and greatly improves the assembly efficiency of the differential 200.

[0046] Further, see Appendix Figure 6 As shown, the hydraulic system 3 also includes an oil tank 32, a hand pump 33, a reversing valve 34, a one-way valve 35 and a bypass valve 36. The oil tank 32 is used to store hydraulic oil. The hand pump 33 is used to drive the hydraulic oil in the oil tank 32 to flow. The piston rod 311 divides the hydraulic cylinder 31 into a first chamber 312 and a second chamber 313. The reversing valve 34 can control whether the hydraulic oil flows into the hydraulic cylinder 31 from the first chamber 312 or from the second chamber 313. The one-way valve 35 can prevent the hydraulic oil from flowing back. The bypass valve 36 is used to relieve pressure when returning the oil.

[0047] It is understandable that, referring to the Figure 6As shown, when using the riveting device 100, the reversing valve 34 is adjusted to the left position, the hand pump 33 is operated, and the hydraulic oil in the oil tank 32 is driven to flow to the first chamber 312 through the one-way valve 35, thereby driving the piston rod 311 to move downward, driving the riveting head 4 to move downward, and after the riveting is completed, the reversing valve 34 is adjusted to the right position, the hand pump 33 is operated, and the hydraulic oil in the oil tank 32 is driven to flow to the second chamber 313 through the one-way valve 35, thereby driving the piston rod 311 to move upward, driving the riveting head 4 to move upward, and when the bypass valve 36 is opened, the hydraulic oil driven by the hand pump 33 directly returns to the oil tank 32 through the bypass valve 36.

[0048] The riveting device 100 for the differential 200 according to the embodiment of the utility model replaces manual riveting, solves the problem of loud noise caused by knocking during riveting and the problem of harm to workers caused by impact force, is simple and convenient to operate, saves time and effort in manual operation, reduces the labor intensity of workers, greatly shortens the riveting time of the differential 200, and greatly improves the assembly efficiency of the differential 200. In addition, the riveting device 100 adopts a hydraulic system 3, the output of the hydraulic press force is more uniform, the installation power is more stable, the riveting position and the riveting stroke can be accurately controlled, which is conducive to improving the assembly qualification rate of the differential 200, improving the press success rate, avoiding the cylindrical pin from coming out, and saving the production cost of the differential 200 to a certain extent.

[0049] In some embodiments of the present invention, refer to the attached Figure 2 and attached Figure 3 As shown in the attached reference Figure 1 The frame 1 includes a base 11, a column frame 12 and an adjusting caster 13. The fixed bracket 2 is fixed on the base 11, which can ensure the stability and reliability of the installation of the fixed bracket 2. The column frame 12 is supported on the base 11, and the hydraulic cylinder 31 is fixed on the column frame 12, which can facilitate the installation and fixation of the hydraulic cylinder 31. The adjusting caster 13 is arranged at the lower end of the base 11, which can facilitate the movement of the frame 1 and the movement of the riveting device 100 to the desired position.

[0050] For example, the fixed bracket 2 is fixed to the base 11 by bolts, which can ensure the stability and reliability of the fixed bracket 2 while facilitating the disassembly and assembly of the fixed bracket 2. The hydraulic cylinder 31 is fixed to the column frame 12 by bolts, which can facilitate the installation and fixation of the hydraulic cylinder 31. The hand pump 33 is fixed to the side of the base 11 by bolts.

[0051] In some embodiments of the present invention, refer to the attached Figure 1 and attached Figure 5 As shown, the cross section of the fixing bracket 2 perpendicular to the mounting surface 21 is a triangle. The triangular structure is more stable and reliable, which can ensure the stability of the fixing bracket 2 and further ensure the installation stability of the differential 200.

[0052] In some embodiments of the present invention, refer to the attached Figure 5 As shown, the fixing bracket 2 has an installation space 22, and the installation surface 21 has an installation hole 211 connected to the installation space 22. At least part of the differential 200 extends into the installation space 22 through the installation hole 211, which can facilitate the installation and placement of the differential 200 and better fix the differential 200.

[0053] In a further embodiment of the present invention, refer to the attached Figure 5 As shown, the mounting surface 21 is provided with a plurality of connection holes 212, which are located outside the mounting hole 211 and spaced apart along the circumferential direction of the mounting hole 211, so as to facilitate the installation and fixation of the differential 200 and ensure the stability and reliability of the installation of the differential 200. For example, the differential 200 can be fixed at the connection hole 212 by fasteners.

[0054] In a further embodiment of the present invention, refer to the attached Figure 5 As shown, the plurality of connection holes 212 are divided into a plurality of groups, each group includes two connection holes 212 arranged opposite to each other in the radial direction of the mounting hole 211, and the distances between the two connection holes 212 of at least two groups of connection holes 212 are unequal, so that it can be used to fix the differential 200 with different hole distances, adapt to different models of differentials 200, improve the compatibility of the riveting device 100, and meet the different usage requirements of users. In a specific example, refer to the attached Figure 5 As shown, six connecting holes 212 are provided on the mounting surface 21, and the six connecting holes 212 are divided into three groups, each group includes two connecting holes 212 arranged opposite to each other in the radial direction of the mounting hole 211, and the distances between the two connecting holes 212 of the three groups of connecting holes 212 are not equal, so that the differential 200 with at least three different hole spacings can be adapted.

[0055] In some embodiments of the present invention, refer to the attached Figure 1 and attached Figure 4 As shown, the riveting device 100 for the differential 200 also includes a guide sleeve 5, which is fixed on the frame 1, and the piston rod 311 is inserted into the guide sleeve 5. The guide sleeve 5 can guide the piston rod 311, limit the movement of the piston rod 311 in the up and down directions, and avoid the piston rod 311 from being offset, thereby affecting the accuracy of the riveting head 4.

[0056] In some embodiments of the present invention, refer to the attached Figure 1 and attached Figure 4As shown, the riveting device 100 for the differential 200 also includes a dial indicator 6, which is used to measure the moving distance of the riveting head 4 in the up-down direction. The downward pressing stroke of the riveting head 4 can be read at any time, and the state of the differential 200 can be closely monitored to prevent the differential 200 from being damaged by over-riveting, thereby improving the riveting success rate of the riveting device 100 and the assembly qualification rate of the differential 200. In addition, the downward pressing stroke of the riveting head 4 can be changed according to different models of differentials 200, and the limit stroke can be adjusted automatically. It should be noted that the hand pump 33 is operated to move the piston rod 311 downward, driving the riveting head 4 to move downward. When the riveting head 4 just contacts the differential 200, the dial indicator 6 is adjusted to zero, and the hand pump 33 is continued to be operated to measure the moving distance of the riveting head 4 in the up-down direction.

[0057] Furthermore, the riveting device 100 for the differential 200 also includes a limit piece, which is mounted on the riveting head 4 and can be adjusted in the up and down directions of the riveting head 4. When the riveting head 4 is pressed down to a certain extent, the limit piece will resist the differential 200, limiting the riveting head 4 from continuing to move downward.

[0058] In some embodiments of the present invention, refer to the attached Figure 1 As shown, the riveting device 100 for the differential 200 also includes a protective cover 7, which is arranged outside the frame 1 to protect the internal structure of the riveting device 100, reduce the noise when the riveting device 100 is in operation, and can play a role in dust prevention, thereby extending the service life of the riveting device 100. Figure 7 As shown, the protective cover 7 includes a protective frame 71 and a transparent plate 72. The protective frame 71 has a hollow area, and the transparent plate 72 is arranged in the hollow area, which can facilitate the user to observe the situation inside the protective cover 7 and the situation of the differential 200 in real time. In a specific example, the protective frame 71 is constructed with a 40×40 profile, the transparent plate 72 is an acrylic transparent plate, and the protective cover 7 is fixed to the frame 1 by bolts.

[0059] In a further embodiment of the present invention, Figure 1 and attached Figure 7As shown, the hollow area includes an observation hollow area 73, and the observation hollow area 73 includes a first area 731 and a second area 732. The first area 731 is located above the second area 732, and the second area 732 is arranged opposite to the fixed bracket 2. The transparent plate 72 includes an observation plate, and the observation plate includes a fixed plate and a movable plate 721. The fixed plate is arranged in the first area 731 and fixedly arranged on the protective frame 71. The movable plate 721 is movably arranged on the protective frame 71 in the up and down directions to open or block the second area 732. When the movable plate 721 is moved, the second area 732 is opened or closed. When the second area 732 is opened, the movable plate 721 and the fixed plate are stacked, which can facilitate fixing the differential 200 on the fixed bracket 2 or removing the differential 200 from the fixed bracket 2. When the movable plate 721 blocks the second area 732, the movable plate 721 and the fixed plate are arranged in the up and down directions, which can protect the internal structure of the riveting device 100, reduce the noise of the riveting device 100 during operation, and play a dust-proof role, thereby extending the service life of the riveting device 100.

[0060] Preferably, refer to the attached Figure 7 As shown, a handle 722 is provided on the outer surface of the movable plate 721, which can be easily grasped by a human hand to drive the movable plate 721 to move in the up and down directions to meet the needs of users.

[0061] It can be understood that when using the riveting device 100, first fix the differential 200 to the fixed bracket 2 by two bolts, move the movable plate 721 downward to block the second area 732, adjust the reversing valve 34, select the direction of downward pressure, operate the hand pump 33 to move the piston rod 311 downward, and drive the riveting head 4 to move downward. When the riveting head 4 just contacts the differential 200, adjust the dial indicator 6 to zero, and continue to operate the hand pump 33 until the downward pressure stroke specified by each item is reached. After the riveting is completed, adjust the reversing valve 34, select the ascending direction, operate the hand pump 33 to return the piston rod 311, move the movable plate 721 upward to open the second area 732, and remove the differential 200.

[0062] Other structures and operations of the riveting device 100 for the differential 200 according to the embodiment of the utility model are known to those skilled in the art and will not be described in detail here.

[0063] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0064] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A riveting device for a differential, characterized in that: include: frame; A fixing bracket, the fixing bracket is arranged on the frame, the fixing bracket has a mounting surface, the mounting surface is an inclined surface having an angle with the vertical direction, and the mounting surface is used to fix the differential; A hydraulic system, the hydraulic system is arranged on the frame, the hydraulic system comprises a hydraulic cylinder, the hydraulic cylinder has a piston rod movable in an up-down direction, the piston rod is arranged above the fixed bracket; A riveting head is arranged at the lower end of the piston rod and is used for riveting the differential.

2. The riveting device for a differential according to claim 1, characterized in that: The frame comprises: A base, the fixing bracket being fixed on the base; A column frame, wherein the column frame is supported on the base, and the hydraulic cylinder is fixed on the column frame; Adjusting casters, the adjusting casters are arranged at the lower end of the base.

3. The riveting device for a differential according to claim 1, characterized in that: The cross section of the fixing bracket perpendicular to the mounting surface is a triangle.

4. The riveting device for a differential according to claim 1, characterized in that: The fixing bracket has an installation space therein, the installation surface has an installation hole communicated with the installation space, and at least a portion of the differential extends into the installation space through the installation hole.

5. The riveting device for a differential according to claim 4, characterized in that: The mounting surface is provided with a plurality of connection holes, and the plurality of connection holes are located outside the mounting hole and are spaced apart along the circumferential direction of the mounting hole.

6. The riveting device for a differential according to claim 5, characterized in that: The plurality of connection holes are divided into a plurality of groups, each group includes two connection holes arranged opposite to each other in the radial direction of the mounting hole, and there are at least two groups of connection holes where the distances between the two connection holes are unequal.

7. The riveting device for a differential according to claim 1, characterized in that: Also includes: A guide sleeve is fixed on the frame, and the piston rod is inserted into the guide sleeve.

8. The riveting device for a differential according to claim 1, characterized in that: Also includes: A dial indicator, which is used to measure the moving distance of the riveting head in the up and down directions; and / or, also include: The limiting member is sleeved on the riveting head and is positionally adjustable in the up and down directions of the riveting head.

9. The riveting device for a differential according to claim 1, characterized in that: It also includes a protective cover, which is arranged outside the frame and includes: A protective frame, wherein the protective frame has a hollow area, A transparent plate is arranged in the hollow area.

10. The riveting device for a differential according to claim 9, characterized in that: The hollow area includes an observation hollow area, the observation hollow area includes a first area and a second area, the first area is located above the second area, and the second area is arranged opposite to the fixing bracket; The transparent plate includes an observation plate, which includes a fixed plate and a movable plate. The fixed plate is arranged in the first area and fixed on the protective frame. The movable plate is movably arranged on the protective frame in an up-down direction to open or block the second area.

Images