Axle housing assembly straightening fixture

Abstract

The application relates to a straightening tool for an axle housing assembly, which is used for being installed on the axle housing assembly, and comprises a supporting base, a straightening sleeve and a straightening head; the supporting base is configured to support the axle housing assembly; the straightening sleeve is sleeved on a straightening area of the axle housing assembly; the straightening sleeve comprises a first sub-sleeve and a second sub-sleeve; the first sub-sleeve and the second sub-sleeve are respectively sleeved on the straightening area of the axle housing assembly, and the connecting end of the first sub-sleeve and the connecting end of the second sub-sleeve are connected in abutment; the straightening head is located on the side of the axle housing assembly which is opposite to the supporting base; and the straightening head is configured to move to the straightening sleeve in the vertical direction to be pressed or to be separated from the straightening sleeve. According to the straightening tool for the axle housing assembly, the straightening sleeve can be relatively fixed with the straightening area of the axle housing assembly, the matching surfaces are matched with each other and the contact area is large, so that the straightening tool is not prone to producing indentations and stress concentration at the indentations, and the fatigue life of the axle housing assembly is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of axle housing straightening, in particular to an axle housing assembly straightening tool. BACKGROUND

[0002] The punch-welded axle housing is a main structure form of commercial vehicle axle housing, and the axle housing assembly is deformed after welding, and needs to be straightened to meet the production requirements.

[0003] However, due to the structure limitation of the axle housing assembly, the flange plate and the round-square transition section of the axle housing assembly have small distance size, and the pressing head will be pressed on the round-square transition section to form a indentation during straightening, and stress concentration often exists at the indentation, which seriously affects the fatigue life of the axle housing assembly. SUMMARY

[0004] Therefore, it is necessary to provide an axle housing assembly straightening tool for improving the fatigue life of the axle housing assembly.

[0005] The present application provides an axle housing assembly straightening tool, which is used for being installed on an axle housing assembly, and comprises:

[0006] a supporting base configured to support the axle housing assembly;

[0007] a straightening pressing sleeve sleeved on a straightening area of the axle housing assembly; the straightening pressing sleeve comprises: a first sub-pressing sleeve and a second sub-pressing sleeve; the first sub-pressing sleeve and the second sub-pressing sleeve are respectively sleeved on the straightening area of the axle housing assembly, and the connecting end of the first sub-pressing sleeve and the connecting end of the second sub-pressing sleeve are connected in abutment; and

[0008] a straightening pressing head located on a side of the axle housing assembly opposite to the supporting base; the straightening pressing head is configured to move to the straightening pressing sleeve in compression or away from the straightening pressing sleeve in the vertical direction.

[0009] In one of the embodiments, the connecting end of the first sub-pressing sleeve is provided with a first protruding block limiting structure, and the connecting end of the second sub-pressing sleeve is provided with a second protruding block limiting structure; the first protruding block limiting structure and the second protruding block limiting structure are connected in abutment.

[0010] In one of the embodiments, at least one groove is formed on the straightening pressing sleeve in the axial direction of the straightening pressing sleeve.

[0011] In one of the embodiments, the connecting end of the first sub-pressing sleeve and the connecting end of the second sub-pressing sleeve are connected electromagnetically.

[0012] In one of the embodiments, the inner cavity section of the first end of the straightening pressing sleeve is in a square structure; and the inner cavity section of the second end of the straightening pressing sleeve is in a circular structure.

[0013] In one of the embodiments, the inner cavity of the first end of the straightening sleeve has a larger diameter than the inner cavity of the second end of the straightening sleeve.

[0014] In one of the embodiments, the single-side gap between the inner cavity of the straightening sleeve and the straightening area of the axle housing assembly is 1mm-4mm.

[0015] In one of the embodiments, a plurality of transition fillets are arranged on the transition arc segment of the inner cavity of the straightening sleeve.

[0016] In one of the embodiments, the single-side gap between the transition fillet and the straightening area of the axle housing assembly is not less than 0.5mm of the single-side gap between the transition arc segment and the straightening area of the axle housing assembly.

[0017] In one of the embodiments, the outer arc surface of the straightening sleeve is provided with at least two machining reference planes, and the at least two machining reference planes are symmetrically arranged around the circumference of the straightening sleeve.

[0018] The straightening sleeve of the axle housing assembly straightening tool provided in the present application can be relatively fixed with the straightening area of the axle housing assembly, the matching surfaces are matched with each other and have a large contact area, and the straightening sleeve is not prone to leaving indentations, so that stress concentration of the axle housing assembly at the indentations is avoided, and the fatigue life of the axle housing assembly is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 A structure schematic diagram of the axle housing assembly straightening tool provided in an embodiment of the present application is shown.

[0020] Figure 2 A structure schematic diagram of the axle housing assembly is shown. Figure 1

[0021] A structure schematic diagram of the axle housing assembly is shown. Figure 3 Figure 2 A partial structure enlarged schematic diagram of another angle of the A area is shown.

[0022] Figure 4 A structure schematic diagram of the straightening sleeve is shown. Figure 1

[0023] Corresponding reference numerals refer to corresponding parts throughout the description of the drawings.

[0024] 1000-axle housing assembly straightening tool;

[0025] 1100-supporting base;

[0026] 1200-straightening sleeve;

[0027] 1201-first sub-sleeve; ​​

[0028] 1202 - second sub-pressing sleeve

[0029] 1203 - groove

[0030] 1204 - electromagnet

[0031] 1205 - first end of straightening press sleeve

[0032] 1206 - second end of straightening press sleeve

[0033] 1207 - first protrusion limiting structure

[0034] 1208 - second protrusion limiting structure

[0035] 1209 - transition arc segment

[0036] 1210 - transition fillet segment

[0037] 1211 - machining reference plane

[0038] 1212 - power cord jack

[0039] 1300 - straightening press head

[0040] 1400 - power cord plug

[0041] 2000 - axle housing assembly

[0042] 2100 - axle head

[0043] 2200 - flange plate

[0044] 2300 - straightening region

[0045] 2301 - square-circle transition segment

[0046] 2302 - straight line segment

[0047] 2303 - weld seam

[0048] 2400 - support

[0049] 2500 - axle housing body DETAILED DESCRIPTION

[0050] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced without some or all of these specific details. In other instances, well known process steps have not been described in detail in order not to unnecessarily obscure the present application.

[0051] In the description of the present application, it should be understood that, if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0052] In addition, if there are terms such as "first", "second", these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "multiple" appears, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise explicitly specified.

[0053] In the present application, unless otherwise explicitly specified and limited, if the terms "mounting", "connecting", "connecting", "fixing" and the like appear, these terms should be interpreted broadly. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0054] In the present application, unless otherwise explicitly specified and limited, if there are similar descriptions such as "first feature on or under second feature", the meaning can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" of the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" of the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0055] It is to be noted that when an element is referred to as being "fixed" or "attached" to another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. As used herein, the terms "vertical", "horizontal", "up", "down", "left", "right", and the like as can be used herein, merely describe

[0056] Referring to Figure 1 , Figure 1 A structural schematic diagram of a bridge shell assembly straightening tool is shown. The bridge shell assembly straightening tool 1000 is used to install on a bridge shell assembly 2000 to be straightened. The bridge shell assembly straightening tool 1000 includes a support base 1100, a straightening pressing sleeve 1200, and a straightening pressing head 1300. The support base 1100 is configured to support the bridge shell assembly 2000. The straightening pressing sleeve 1200 is sleeved on a straightening area 2300 of the bridge shell assembly 2000. The straightening pressing sleeve 1200 includes a first sub-pressing sleeve 1201 and a second sub-pressing sleeve 1202. The first sub-pressing sleeve 1201 and the second sub-pressing sleeve 1202 are respectively sleeved on the straightening area 2300 of the bridge shell assembly 2000, and a connecting end of the first sub-pressing sleeve 1201 and a connecting end of the second sub-pressing sleeve 1202 are connected in abutment. The straightening pressing head 1300 is located on a side of the bridge shell assembly 2000 opposite to the support base 1100. The straightening pressing head 1300 is configured to move in a vertical direction to press against or be separated from the straightening pressing sleeve 1200.

[0057] Referring to Figure 2 and Figure 3 shown, Figure 2 A structural schematic diagram of a bridge shell assembly is shown. Figure 1 A structural schematic diagram of a bridge shell assembly is shown. Figure 3 A structural schematic diagram of a bridge shell assembly is shown. Figure 2The partial structure of the middle A region from another angle is shown in an enlarged view. The axle housing assembly 2000 includes a shaft head 2100, a flange plate 2200, a straightening region 2300, a bracket 2400, and an axle housing body 2500. The structure of the axle housing assembly will not be described in detail here, and the axle housing assembly straightening tool provided by the present application can be applied to the structure of the axle housing assembly known to those skilled in the art. The structure of the axle housing assembly 2000 that needs to be highlighted is the straightening region 2300. Referring to the straightening region 2300 shown in the drawings, the straightening region 2300 is located between the bracket 2400 and the flange plate 2200. Due to the structure of the axle housing assembly 2000, the distance between the flange plate 2200 and the square-to-round transition section 2301 of the straightening region 2300 is small. Due to the influence of the weld 2303 at the flange plate 2200 and the square-to-round transition section 2301, the straight section 2302 of the straightening region 2300 of the axle housing assembly 2000 is very narrow, and the minimum is even less than 10 mm.

[0058] However, due to the dimensional accuracy of the axle housing assembly 2000 and the axial positioning deviation during straightening, the straightening process commonly used by the straightening head directly pressing on the axle housing assembly 2000 is prone to form a pressure mark at the square-to-round transition section 2301 of the axle housing assembly 2000. Generally, the axle housing assembly 2000 has stress concentration at the pressure mark, which seriously affects the fatigue life of the axle housing assembly. Considering the circumferential asymmetry of the square-to-round transition section 2301 of the axle housing assembly 2000, when the straightening head 1300 moves up and down in the vertical direction to perform the straightening action, only the area of the straightening head 1300 opposite the straight section 2302 of the straightening region 2300 can have a straightening effect (i.e., the effective action area of the straightening head), and the area of the straightening head 1300 opposite the square-to-round transition section 2301 of the straightening region 2300 can only use a large gap to avoid the structure, which makes the effective action area of the straightening head 1300 too narrow, and even after the sharp corner is rounded, the effective action area of the straightening head 1300 is almost negligible. The small contact area between the straightening head 1300 and the axle housing assembly 2000 makes it prone to crushing deformation due to insufficient strength, which causes the straightening head to press on the square-to-round transition section and form a pressure mark, and then stress concentration occurs at the pressure mark, which seriously affects the fatigue life of the axle housing assembly.

[0059] Referring back to Figure 4 shown, Figure 4 shown, Figure 1 The structure of the straightening sleeve is shown in an enlarged view, and the structure of the straightening sleeve will be described in detail in combination with Figure 1 shown,

[0060] In an embodiment of the present application, the connecting end of the first sub-pressing sleeve 1201 is provided with a first protrusion limiting structure 1207, and the connecting end of the second sub-pressing sleeve 1202 is provided with a second protrusion limiting structure 1208; the first protrusion limiting structure 1207 and the second protrusion limiting structure 1208 are connected in abutment. In this embodiment, the positioning and anti-disengagement between the first sub-pressing sleeve 1201 and the second sub-pressing sleeve 1202 are achieved through the first protrusion limiting structure 1207 and the second protrusion limiting structure 1208. It is shown in the drawings that both the first protrusion limiting structure 1207 and the second protrusion limiting structure 1208 are achieved by three-face protrusion structures to realize positioning and lateral anti-disengagement. However, it is known to those skilled in the art that the shapes of the first protrusion limiting structure 1207 and the second protrusion limiting structure 1208 are not limited to those shown in the drawings, and any protrusion structure that can achieve the effect of positioning and lateral anti-disengagement can be selected, which will not be enumerated one by one here. Figure 4 It is shown in the drawings that both the first protrusion limiting structure 1207 and the second protrusion limiting structure 1208 are achieved by three-face protrusion structures to realize positioning and lateral anti-disengagement. However, it is known to those skilled in the art that the shapes of the first protrusion limiting structure 1207 and the second protrusion limiting structure 1208 are not limited to those shown in the drawings, and any protrusion structure that can achieve the effect of positioning and lateral anti-disengagement can be selected, which will not be enumerated one by one here.

[0061] In an embodiment of the present application, at least one groove 1203 is formed on the straightening pressing sleeve 1200 along the axial direction of the straightening pressing sleeve 1200, so as to avoid interference with the weld 2303 at the flange plate 2200 of the axle housing assembly 2000 when the straightening pressing sleeve 1200 is installed on the straightening area 2300 of the axle housing assembly 2000. It should be noted that the shape and arrangement position of the groove 1203 are not specifically limited, and the shape and arrangement position of the groove 1203 can be adjusted according to the specific state of the weld 2303 at the flange plate 2200 of the axle housing assembly 2000, so as to avoid interference between the straightening pressing sleeve 1200 and the axle housing assembly 2000 during installation.

[0062] In an embodiment of the present application, the connecting end of the first sub-pressing sleeve 1201 and the connecting end of the second sub-pressing sleeve 1202 are electromagnetically connected. Specifically, at least one electromagnet 1204 can be arranged at the positions opposite to each other of the connecting end of the first sub-pressing sleeve 1201 and the connecting end of the second sub-pressing sleeve 1202, as shown in the drawings, so that the electromagnet 1204 arranged at the connecting end of the first sub-pressing sleeve 1201 and the electromagnet 1204 arranged at the connecting end of the second sub-pressing sleeve 1202 can be quickly locked in the power-off state and can be quickly demagnetized in the power-on state to separate the first sub-pressing sleeve 1201 and the second sub-pressing sleeve 1202, thereby realizing quick clamping of the straightening pressing sleeve and ensuring production efficiency. Figure 4

[0063] ​The number and arrangement of the electromagnets 1204 are not limited here, as long as the electromagnets 1204 arranged at the connecting end of the first sub-pressing sleeve 1201 can be aligned with the electromagnets 1204 arranged at the connecting end of the second sub-pressing sleeve 1202. Of course, the electromagnets 1204 are not limited to the shapes and structures shown in the figure, and can be adjusted according to actual working conditions. The shapes of the electromagnets 1204 can be circular, square, etc., which are not listed one by one here.

[0064] It should be noted that the locking form of the first sub-pressing sleeve 1201 and the second sub-pressing sleeve 1202 is not limited to the electromagnetic locking mode provided in the embodiment, and the first sub-pressing sleeve 1201 and the second sub-pressing sleeve 1202 can also adopt mechanical connection locking and other locking forms, which are not listed one by one here.

[0065] It should be further noted that the shapes of the first sub-pressing sleeve 1201 and the second sub-pressing sleeve 1202 are not limited to the half-circle splicing connection provided in the embodiment, which is not listed one by one here.

[0066] In an embodiment of the present application, the inner cavity of the first end 1205 of the straightening sleeve is in a square structure; the inner cavity of the second end 1206 of the straightening sleeve is in a circular structure, and the inner cavity of the first end 1205 of the straightening sleeve to the inner cavity of the second end 1206 of the straightening sleeve is a square-circular transition cavity surface. Further, the inner cavity diameter of the first end 1205 of the straightening sleeve is larger than the inner cavity diameter of the second end 1206 of the straightening sleeve, and the inner cavity diameter of the first end 1205 of the straightening sleeve to the inner cavity diameter of the second end 1206 of the straightening sleeve gradually decreases.

[0067] It should be noted that the square-circular transition cavity surface of the inner cavity structure of the straightening sleeve matches the contour shape of the straightening area 2300 (including the square-circular transition section 2301 and the straight section 2302) of the axle housing assembly 2000. The single-sided gap between the inner cavity of the straightening sleeve 1200 and the straightening area 2300 of the axle housing assembly 2000 is 1mm-4mm, which can avoid indentation on the axle housing assembly 2000, thereby avoiding stress concentration at the indentation, and the straightening sleeve can protect the axle housing assembly during straightening to improve the fatigue life of the axle housing assembly.

[0068] Reference Figure 4 As shown, a plurality of transition fillet sections 1210 are arranged on the transition arc section 1209 of the inner cavity of the straightening sleeve 1200. The transition fillet sections 1210 in the figure correspond to the four corner positions of the inner cavity cross section of the first end 1205 of the straightening sleeve.

[0069] The single-sided gap between the transition fillet section 1210 and the straightening area 2300 of the axle housing assembly 2000 is not less than the single-sided gap between the transition arc section 1209 and the straightening area 2300 of the axle housing assembly 2000, which is 0.5 mm. In this way, it can be ensured that the transition fillet section 1210 can avoid the square-round transition section 2301 of the straightening area 2300 of the axle housing assembly 2000, that is, the transition fillet section 1210 of the straightening sleeve 1200 can not be in contact with the square-round transition section 2301 of the straightening area 2300 of the axle housing assembly 2000. The transition arc section 1209 of the straightening sleeve 1200 is in contact with the square-round transition section 2301 of the straightening area 2300 of the axle housing assembly 2000, which increases the stress area and avoids the problem of crushing deformation of the straightening sleeve 1200 when the straightening pressure head 1300 is pressed down.

[0070] In an embodiment of the present application, the outer arc surface of the straightening sleeve 1200 is provided with at least two machining reference planes 1211. The at least two machining reference planes 1211 are symmetrically arranged around the circumference of the straightening sleeve 1200. In this way, when the axle housing assembly 2000 is rotated to any angle along the axis direction of the axle head 2100 for straightening, the circular arc surface cooperation between the straightening pressure head 1300 and the straightening sleeve 1200 can be maintained, and the generation of pressure marks due to the mismatch of the profile can be avoided.

[0071] In an embodiment of the present application, the opposite action surfaces of the straightening pressure head 1300 and the straightening sleeve 1200 are circular arc surfaces, and further, the circular arc surfaces need to be at least close to a semicircle. In this way, the straightening sleeve 1200 can be protected during straightening, and the straightening pressure head 1300 and the straightening sleeve 1200 can be prevented from loosening.

[0072] In an embodiment of the present application, the straightening pressure head 1300 is installed on a sliding block of a straightening device (not shown in the figure), and the supporting base 1100 is fixed on a platform of the straightening device. It should be noted that the straightening device is not the focus of the present application, and the straightening device known to those skilled in the art can be selected according to the actual working condition, which will not be described in detail here.

[0073] After the axle housing assembly 2000 is hoisted to the support base 1100, the first sub-pressing sleeve 1201 and the second sub-pressing sleeve 1202 of the straightening pressing sleeve 1200 are assembled together at the straightening area 2300 of the axle housing assembly 2000 under the pushing of the hydraulic cylinder or the pneumatic cylinder and are locked under the action of the electromagnetic force. The first protrusion limiting structure 1207 arranged at the connecting end of the first sub-pressing sleeve 1201 and the second protrusion limiting structure 1208 arranged at the connecting end of the second sub-pressing sleeve 1202 realize the positioning and anti-disengagement between the first sub-pressing sleeve 1201 and the second sub-pressing sleeve 1202. When straightening, the inner cavity profile of the straightening pressing sleeve 1200 (i.e. the inner cavity profile formed by the inner cavity profile of the first sub-pressing sleeve 1201 and the inner cavity profile of the second sub-pressing sleeve 1202 when the first sub-pressing sleeve 1201 and the second sub-pressing sleeve 1202 are in the locked state) leaves a gap with the straightening area 2300 of the axle housing assembly 2000, so as to prevent the shape and size fluctuation of the axle housing assembly 2000 from causing the straightening pressing sleeve 1200 to be unable to be assembled. Considering the straightening area 2300 of the axle housing assembly 2000, especially the larger shape and size fluctuation of the square-to-round transition section 2301 in the straightening area 2300, the one-side gap between the transition round corner section 1210 and the straightening area 2300 of the axle housing assembly 2000 is greater than the one-side gap between the transition arc section 1209 and the straightening area 2300 of the axle housing assembly 2000 by 0.5 mm, so as to ensure that the side area can be stressed during straightening, the stressed area is large, and the mismatch between the square-to-round transition section 2301 of the axle housing assembly 2000 and the transition arc section 1209 of the straightening pressing sleeve 1200 is avoided to cause indentation.

[0074] After the first sub-pressing sleeve 1201 and the second sub-pressing sleeve 1202 of the straightening press sleeve 1200 are locked, the center of the straightening device (not shown in the figure) moves along the axis direction of the shaft head 2100 of the bridge housing assembly 2000 to lift the shaft heads 2100 at both ends of the bridge housing assembly 2000, so that the bridge housing assembly 2000 is moved upward to separate from the support base 1100, and then the bridge housing assembly 2000 is rotated. At this time, the straightening device (not shown in the figure) starts to measure the deformation amount of the bridge housing assembly 2000 in line. After the straightening position is determined according to the position where the maximum deformation amount measured by the straightening device (not shown in the figure) is located, the straightening device (not shown in the figure) repositions the bridge housing assembly 2000 on the support base 1100. The straightening press head 1300 is driven by the slider of the straightening device (not shown in the figure) to move downward along the vertical direction to press the straightening press sleeve 1200. Here, the circular arc surface opposite to the straightening press sleeve 1200 needs to be at least close to a semicircle, so that the straightening press sleeve 1200 can be protected during straightening, and the straightening press head 1300 and the straightening press sleeve 1200 are prevented from loosening. At the same time, the circular arc surface between the straightening press head 1300 and the straightening press sleeve 1200 is matched, so that the straightening press head 1300 is prevented from directly contacting the bridge housing body 2500 of the bridge housing assembly 2000, and problems such as indentation of the bridge housing body 2500 and crushing of the straightening press head 1300 caused by mismatched shapes are avoided.

[0075] After each straightening of the bridge housing assembly 2000 in one direction, the center of the straightening device (not shown in the figure) moves along the axis direction of the shaft head 2100 of the bridge housing assembly 2000 to lift the shaft heads 2100 at both ends of the bridge housing assembly 2000, so that the bridge housing assembly 2000 is moved upward to separate from the support base 1100, and then the bridge housing assembly 2000 is rotated. After the straightening device (not shown in the figure) starts to measure the deformation amount of the bridge housing assembly 2000 in line again, the bridge housing assembly 2000 is straightened again until the dimensional accuracy of the bridge housing assembly 2000 meets the requirements.

[0076] After the straightening of the bridge housing assembly 2000 is completed, the power line plug 1400 shown in Figure 1 is inserted into the power line jack 1212 of the straightening press sleeve 1200 shown in Figure 4 , and the electromagnetic force disappears after the power is turned on. The first sub-pressing sleeve 1201 and the second sub-pressing sleeve 1202 of the straightening press sleeve 1200 are separated from the straightening area 2300 of the bridge housing assembly 2000 under the pushing of the hydraulic cylinder or the air cylinder.

[0077] It should be noted that the position of the power line jack 1212 on the straightening press sleeve 1200 can be distributed on the side surface, the outer arc surface, etc. of the straightening press sleeve 1200 according to the different structures of the straightening device (not shown in the figure) and the bridge housing assembly 2000, which is not specifically limited here. The specifications of the power line plug 1400 and the power line jack 1212 are not specifically limited.

[0078] Any combination of the technical features in the above-described embodiments can be made. For the sake of brevity, the foregoing description is not intended to be exhaustive or to be limited to the precise embodiments described. Modifications or variations are possible in light of the above teachings. The embodiments were chosen and described in order to best illustrate the principles of the application and its practical application and to thereby enable others skilled in the art to best utilize the application.

[0079] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be pointed out that, for ordinary skilled persons in the art, some modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A bridge housing assembly straightening fixture (1000), characterized in that, The axle housing assembly straightening fixture (1000) is used for mounting on the axle housing assembly (2000), and the axle housing assembly straightening fixture (1000) includes: A support base (1100) is configured to support the bridge housing assembly (2000); A straightening sleeve (1200) is fitted onto the straightening area (2300) of the axle housing assembly (2000); the straightening sleeve (1200) includes: a first sub-sleeve (1201) and a second sub-sleeve (1202); the first sub-sleeve (1201) and the second sub-sleeve (1202) are respectively fitted onto the straightening area (2300) of the axle housing assembly (2000), and the connecting end of the first sub-sleeve (1201) and the connecting end of the second sub-sleeve (1202) are connected in abutment; and A straightening pressure head (1300) is located on one side of the bridge housing assembly (2000) opposite to the support base (1100); the straightening pressure head (1300) is configured to move vertically to press against or disengage from the straightening pressure sleeve (1200).

2. The bridge housing assembly straightening fixture (1000) according to claim 1, characterized in that, The first sub-pressure sleeve (1201) is provided with a first protrusion limiting structure (1207) at its connecting end, and the second sub-pressure sleeve (1202) is provided with a second protrusion limiting structure (1208) at its connecting end; the first protrusion limiting structure (1207) and the second protrusion limiting structure (1208) are connected in a mating manner.

3. The bridge housing assembly straightening fixture (1000) according to claim 1, characterized in that, At least one groove (1203) is formed on the straightening sleeve (1200) along the axial direction of the straightening sleeve (1200).

4. The bridge housing assembly straightening fixture (1000) according to claim 1, characterized in that, The connecting end of the first sub-pressure sleeve (1201) and the connecting end of the second sub-pressure sleeve (1202) are electromagnetically connected.

5. The bridge housing assembly straightening fixture (1000) according to claim 1, characterized in that, The inner cavity cross-section of the first end (1205) of the straightening sleeve is square; the inner cavity cross-section of the second end (1206) of the straightening sleeve is circular.

6. The bridge housing assembly straightening fixture (1000) according to claim 5, characterized in that, The inner diameter of the first end (1205) of the straightening sleeve is larger than the inner diameter of the second end (1206) of the straightening sleeve.

7. The bridge housing assembly straightening fixture (1000) according to claim 1, characterized in that, The single-sided gap between the inner cavity of the straightening sleeve (1200) and the straightening area (2300) of the bridge housing assembly (2000) is 1mm to 4mm.

8. The bridge housing assembly straightening fixture (1000) according to claim 1, characterized in that, Multiple transition rounded segments (1210) are distributed on the transition arc segment (1209) of the inner cavity of the straightening sleeve (1200).

9. The bridge housing assembly straightening fixture (1000) according to claim 8, characterized in that, The single-sided gap between the transition rounded section (1210) and the straightening area (2300) of the bridge housing assembly (2000) shall not be less than 0.5mm between the transition rounded section (1209) and the straightening area (2300) of the bridge housing assembly (2000).

10. The bridge housing assembly straightening fixture (1000) according to claim 1, characterized in that, The outer arc surface of the straightening sleeve (1200) is provided with at least two machining reference planes (1211); wherein the at least two machining reference planes (1211) are arranged symmetrically around the circumference of the straightening sleeve (1200).

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