CN220660522U - Differential mechanism driven gear and wheel carrier shell assembly fixture - Google Patents

Abstract

The utility model provides an assembly fixture for a driven gear of a differential and a wheel carrier shell, which comprises left and right wall plates which are oppositely arranged on a machine base and are parallel to each other, wherein front and rear inclined walls with large upper space and small lower space are arranged at two ends of a clamping cavity formed by the left and right wall plates, and the front and rear inclined walls are lower than the upper edges of the left and right wall plates. When the driven gear and the wheel carrier shell are assembled, the wheel carrier shell is firstly placed on the tool with the cover top downwards, then the driven gear is placed at the cover opening end of the wheel carrier shell, and in the process of inserting and tightening the bolts, the attitude of the wheel carrier shell is kept stable, so that the assembly efficiency and the safety are improved.

Description

Differential mechanism driven gear and wheel carrier shell assembly fixture

Technical Field

The utility model relates to the technical field of differential mechanism part assembly tools, in particular to a differential mechanism driven gear and wheel carrier shell assembly tool.

Background

The differential is an indispensable important part in a transmission system for transmitting power of a gearbox to a power wheel shaft, a driven gear 1 of the differential, namely a gear meshed with a power output shaft gear of the gearbox, needs to be fixedly connected with a wheel carrier shell 2, namely a planetary wheel carrier shell, a planetary wheel is further arranged in the planetary wheel carrier shell, the whole wheel carrier shell 2 is a bell-shaped shell or a cylindrical cone shell, a notch part is formed in a cover body on the opposite side, notch surfaces 3 of the notch areas on two sides are parallel to each other, and the cover opening end of the wheel carrier shell 2 is connected with a gear width part of the driven gear 1 through bolts. When the differential mechanism is assembled, the installation of the planet wheel and the wheel carrier shell 2 and the installation of the wheel shaft gear connected with the wheel shaft are firstly completed, then the driven gear 1 is connected with the wheel carrier shell 2, when the driven gear 1 and the wheel carrier shell 2 are assembled, the wheel carrier shell 2 needs to be fixed in advance, a clamping and fixing tool is usually a bench vice, and even if the clamping opening of the bench vice is difficult to clamp and fix the cylindrical bell-shaped wheel carrier shell 2 and is clamped on the notch surface 3 on the opposite side of the wheel carrier shell 2, the attitude of the wheel carrier shell 2 is difficult to reliably fix, so that the operation of connecting the driven gear 1 and the wheel carrier shell 2 by adopting bolts is labor-consuming and low in efficiency, and especially the gap between the jaw of the bench vice and an adjusting and locking screw below the jaw of the bench vice is limited, the phenomenon that the adjusting and locking screw interferes with the top of a cover of the wheel carrier shell 2 easily occurs, and the wheel carrier shell 2 cannot be clamped.

The technical scheme disclosed by the name of a differential assembly bolt tightening and disassembling tool (CN 206883563U) is that a positioning rod 5 in the tool is sleeved with the differential assembly, a sliding support block 4 moves in a sliding chute 9, the center distance between a main speed reduction driven gear and a fixed gear 7 is adjusted to enable the main speed reduction driven gear and the fixed gear to be meshed and fixed, and a differential shell is further locked through a locking bolt. The main problem with the above solution is that the device needs to provide the fixed gear 7 and the driven gear for mating engagement, the cost will obviously increase and the adjustment process of implementing the fixed gear 7 and the driven gear for mating engagement will take a serious time, in addition, since the differential housing does not have a planar portion, the force application portion is difficult to determine when the differential housing is locked by the locking bolt, the stability of the locking housing cannot be ensured, and the differential housing is locked by the locking bolt, which may cause damage to the housing.

Disclosure of Invention

The utility model aims to provide an assembly fixture for a driven gear and a wheel carrier shell of a differential, which firstly ensures that the wheel carrier shell of the differential is restrained and fixed fast and reliably so as to connect the driven gear and the wheel carrier shell by adopting a locking bolt.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a differential mechanism driven gear and wheel carrier casing assembly fixture, the relative arrangement has left and right wallboard on the frame, and the relative curb plate face of left and right wallboard is located plumb face and is parallel to each other, and the front and back inclined wall has been arranged at the both ends of the double-layered chamber that left and right wallboard constitutes, and front and back inclined wall is less than the upper edge of left and right wallboard, and the inclined mode of front inclined wall and back inclined wall is that the interval between upper portion is great, lower part interval is little.

When the differential driven gear and the wheel carrier shell are assembled by adopting the scheme, the wheel carrier shell with the planet gears and the wheel axle gears assembled is firstly placed on the tool provided by the utility model in a mode that the cover opening is upward and the cover top is downward, specifically, the area where the notch parts are arranged on the two sides of the cover body is downwards placed in the cavity clamping area between the left wall plate and the right wall plate, the arc cone wall part of the cover top part is pressed on the front inclined wall and the rear inclined wall, the posture of the wheel carrier shell is reliably fixed at the moment, and then the driven gear is placed at the cover opening end of the wheel carrier shell, and the posture of the wheel carrier shell is kept stable in the process of inserting bolts and screwing, so that the assembly efficiency and the safety are improved.

Drawings

FIG. 1 is a schematic view of a differential carrier housing;

FIG. 2 is an assembled schematic view of a differential driven gear and a carrier housing;

FIG. 3 is an overall schematic diagram of an assembly fixture;

FIG. 4 is a side cross-sectional view of the housing and left and right wall panels;

FIG. 5 is a top view of FIG. 4;

FIG. 6 is an elevation view of the front cross plate beam; FIG. 7 is a top view of FIG. 6;

FIG. 8 is a front view of the front wedge; FIG. 9 is a left side view of FIG. 8;

fig. 10 is a top view of the assembly fixture.

In the figure: 1-a driven gear; 2-a wheel carrier housing; 3-notch surface; 4-an arc conical surface; 10-a stand; 21-left wall plate; 22-right wall plate; 211-left cushion block; 221-right pad; 21 a-left missing part; 22 b-right deletion; 212 a-left bolt; 222 a-right bolt; 31-front wedge; 32-rear wedge block; 311-front inclined wall; 321-rear inclined wall; 33-front cross plate beam; 34-rear cross plate beams; 331 a-front connecting bolts; 341 a-rear connecting bolts; 312 a-front wedge bolts; 322 a-rear wedge bolts; 212-left bolt hole; 222-right bolt hole; 331-front connecting bolt hole; 341-rear connecting bolt holes; 312-front chock bolt holes; 322-rear wedge bolt holes.

Detailed Description

Referring to fig. 1-3, a differential driven gear and wheel carrier shell assembling tool is shown, a base 10 is provided with left and right wall plates 21, 22 in an opposite mode, opposite side plate surfaces of the left and right wall plates 21, 22 are located in a plumb face and are parallel to each other, two ends of a clamping cavity formed by the left and right wall plates 21, 22 are provided with front and rear inclined walls 311, 321, the front and rear inclined walls 311, 321 are lower than upper edges of the left and right wall plates 21, 22, and the inclined mode of the front inclined wall 311 and the rear inclined wall 321 is that the interval between upper parts is larger, and the interval between lower parts is smaller.

Referring to fig. 2, in the above-mentioned scheme, the frame 10 is integrally formed as an oblong body, two bolt holes located at the outer sides of the left and right wall plates 21 and 22 are respectively arranged at the left and right ends of the frame 10, and are fixed on the workbench through threaded connection before use. The left and right wall plates 21, 22 are formed by integrally forming or fixedly connecting separate pieces with the stand 10, and are integrally in a concave block shape, as shown in fig. 4, the opposite side plate surfaces are positioned in a plumb plane and are parallel to each other, so that when the wheel carrier shell 2 is put into a clamping cavity formed by the left and right wall plates 21, 22 of the tooling, the notch surfaces 3 where notch areas on two sides of the wheel carrier shell 2 are positioned are adjacent to the left and right wall plates 21, 22, and the wheel carrier shell 2 is prevented from rotating when the connecting bolt of the driven gear 1 and the wheel carrier shell 2 is screwed; the front and rear inclined walls 311, 321 are fixedly connected with the machine base 10 in such a manner that the upper parts are spaced apart at a larger distance and the lower parts are spaced apart at a smaller distance, and when the wheel carrier shell 2 is placed in the clamping cavity of the left and right wall plates 21, 22 of the tooling, the front and rear inclined walls 311, 321 abut against the arc conical surfaces 4 of the middle part lower part of the wheel carrier shell 2, and the wheel carrier shell 2 is supported in the plumb direction, as shown in fig. 1. The front and rear inclined walls 31, 32 are lower than the upper edges of the left and right wall plates 21, 22, so as to ensure that when the front and rear inclined walls 311, 321 abut against the arc conical surface 4 of the wheel carrier shell 2, the upper flange 5 of the wheel carrier shell 2 abuts against or approaches the upper surfaces of the left and right wall plates 21, 22, and avoid the inclined posture of the wheel carrier shell 2 caused by downward displacement of the side of the wheel carrier shell 2 caused by the action force of a plumb when the connecting bolt is screwed.

Preferably, left and right spacers 211, 221 are provided on opposite sides of the left and right wall plates 21, 22, respectively, and opposite side plate surfaces of the left and right spacers 211, 221 are located in the plumb face and parallel to each other. In the above-mentioned scheme, the notch surfaces 3 on both sides of the wheel carrier shell 2 can respectively abut against opposite side plate surfaces of the left cushion block 211 and the right cushion block 221 instead of the left wall plate 21 and the right wall plate 22, and the opposite side plate surfaces are positioned in the plumb face and are parallel to each other, so that the wheel carrier shell 2 can be attached and abutted after being put into a tool. The left and right pads 211, 221 may be made of a material with moderate rigidity.

As shown in fig. 2, 3, 8 and 9, front and rear cross beams 33 and 34 are arranged at both ends of the clip cavity formed by the left and right wall plates 21 and 22, front and rear wedges 31 and 32 are arranged at the middle positions in the longitudinal direction of the front and rear cross beams 33 and 34, and front and rear inclined walls 311 and 321 are formed on the front and rear wedges 31 and 32. In the above-mentioned scheme, the front and rear cross beams 33, 34 are identical in specification, and the whole is in the shape of a flat rod member with a square cross section, and the opposite side plate surfaces thereof are located in the plumb face and are parallel to each other. The front and rear wedges 31, 32 are identical in size, the upper side section is rectangular, the lower side section is right trapezoid, and as shown in fig. 9, the inclined surfaces of the trapezoid sides are the front and rear inclined walls 311, 321 for supporting the arc-shaped conical surface 4 of the wheel carrier shell 2. The arrangement mode can select front wedge blocks 31 and rear wedge blocks 32 or front transverse plate beams 33 and rear transverse plate beams 34 with different sizes according to wheel carrier shells 2 with different specifications and sizes, so that the applicability of the tool is improved.

Nylon 6 is used for the front and rear diagonal walls 311, 321 of the left and right spacers 211, 221 and the front and rear wedges 31, 32. In the above scheme, in the process of putting the wheel carrier shell 2 into the tooling, the opposite side plate surfaces and the front inclined wall 311 and the rear inclined wall 321 which are contacted with the left wall plate 21 and the right wall plate 22 are made of steel, the weight of the wheel carrier shell 2 is large, parts inside the wheel carrier shell 2 are precise, the contact surfaces are made of nylon 6 materials, the wheel carrier shell 2 can be effectively prevented from being knocked and damaged, and a certain buffer effect can be achieved in the process of screwing the connecting bolt of the driven gear 1 and the wheel carrier shell 2.

As shown in fig. 4 to 9, the upper parts of the opposite sides of the left and right wall plates 21, 22 are provided with stepped missing parts 21a, 22b, and left and right pads 211, 221 are embedded in the missing parts 21a, 22b and are detachably connected by vertically arranged left and right bolt holes 212, 222. Front and rear connection bolts 331a, 341a disposed horizontally at both ends of the front and rear cross plate beams 33, 34 are detachably connected to the respective end face sides of the left and right wall plates 21, 22. Front and rear wedge bolts 312a, 322a, which are horizontally disposed on front and rear inclined walls 311, 321 of the front and rear wedges 31, 32, are detachably connected to the front and rear cross plate beams 33, 34 at the middle positions in the length direction.

In the above-mentioned scheme, the step-shaped missing portions 21a, 22b are engaged with the left and right pads 211, 221, the specifications of the left and right pads 211, 221 are the same, the whole is horizontally arranged in a cuboid, two vertical left and right bolt holes 212, 222 which are symmetrical in center are respectively arranged at two ends of the left and right pad, and the left and right bolts 212a, 222a penetrate through the left and right pads 211, 221 and are respectively connected with the lower step surfaces of the missing portions 21a, 22 b. The arrangement mode can select or replace the left cushion block 211 and the right cushion block 221 with different sizes according to the wheel frame shells 2 with different specifications and sizes, so that the applicability of the tool is improved. Two front and rear connecting bolt holes 331, 341 which are symmetrical in center are respectively arranged at two ends of the front and rear transverse plate beams 33, 34 and are detachably connected with the corresponding end face sides of the left and right wall plates 21, 22; the center of the plate surface is provided with two connecting bolts 312a and 322a of front wedge blocks and rear wedge blocks which are symmetrical relative to the center of the plate surface, and the front transverse plate beams 33 and 34 are detachably connected with the front wedge blocks 31 and the rear wedge blocks 32. The front and rear wedges 31, 32 are respectively provided with two horizontally arranged front and rear wedge bolt holes 312, 322 with central symmetry at the middle parts of the front and rear inclined walls 311, 321, the front and rear wedge bolt holes 312, 322 of the front and rear wedges 31, 32 are stepped holes, and a large-aperture section is positioned at one side of the front and rear inclined walls 311, 321, and one end of the large-aperture section is used for accommodating a bolt head. In the side view direction of the front and rear wedges 31, 32, the front and rear inclined walls 311, 321 are thicker corresponding to the width in the horizontal direction so as to meet the requirement of installing the front and rear wedge bolts.

The front and rear cross plate beams 33, 34 are provided at both ends thereof with mesa-shaped projections 33a, 34b facing toward the clip cavity or facing away from the clip cavity on the respective end face sides of the left and right wall plates 21, 22. In the above-described embodiment, referring to fig. 2 to 3, the stepped bosses 33a, 34b of the front and rear cross plate beams 33, 34 are directed toward the sandwiching chambers; referring to fig. 10, the stepped protrusions 33a and 34b of the front and rear cross beams 33 and 34 face away from the clamping cavity, and the arrangement mode enables the front and rear cross beams 33 and 34 and the front and rear wedges 31 and 32 to be flexibly arranged according to the specification and the size of the wheel carrier shell 2, and the same set of components are installed in different directions through the stepped protrusions 33a and 34b, so that the tooling requirements of two sets of sizes are met, and the cost is saved.

Claims (8)

1. The utility model provides a differential mechanism driven gear and wheel carrier casing assembly fixture which characterized in that: the machine base (10) is provided with left and right wall plates (21, 22) oppositely, opposite side plate surfaces of the left and right wall plates (21, 22) are positioned in a plumb face and are parallel to each other, front and rear inclined walls (311, 321) are arranged at two ends of a clamping cavity formed by the left and right wall plates (21, 22), the front and rear inclined walls (311, 321) are lower than upper edges of the left and right wall plates (21, 22), and the inclined mode of the front inclined wall (311) and the rear inclined wall (321) is that the interval between the upper parts is larger, and the interval between the lower parts is small.

2. The differential driven gear and wheel carrier housing assembly tooling of claim 1, wherein: left and right pads (211, 221) are respectively arranged on opposite sides of the left and right wall plates (21, 22), and opposite side plate surfaces of the left and right pads (211, 221) are positioned in the plumb face and are parallel to each other.

3. The differential driven gear and wheel carrier housing assembly tooling of claim 1, wherein: front and rear cross beams (33, 34) are arranged at two ends of a clamping cavity formed by the left and right wall plates (21, 22), front and rear wedges (31, 32) are arranged at middle positions of the front and rear cross beams (33, 34) in the length direction, and front and rear inclined walls (311, 321) are formed on the front and rear wedges (31, 32).

4. A differential driven gear and wheel carrier housing assembly tooling as set forth in claim 2 or 3 wherein: nylon 6 is selected for the front and rear inclined walls (311, 321) on the left and right pads (211, 221) and the front and rear wedges (31, 32).

5. The differential driven gear and wheel carrier housing assembly tooling of claim 3, wherein: the upper parts of the opposite sides of the left wall plate (21) and the right wall plate (22) are provided with step-shaped missing parts (21 a, 22 b), and the left cushion blocks (211, 221) are embedded in the missing parts (21 a, 22 b) and are detachably connected through vertically arranged bolts (212 a, 222 a).

6. The differential driven gear and wheel carrier housing assembly tooling of claim 3, wherein: front and rear connecting bolts (331 a, 341 a) horizontally arranged at both ends of the front and rear cross beams (33, 34) are detachably connected to the respective end face sides of the left and right wall plates (21, 22).

7. The differential driven gear and wheel carrier housing assembly tooling of claim 3, wherein: front and rear wedge bolts (312 a, 322 a) which are horizontally arranged are arranged on front and rear inclined walls (311, 321) of the front and rear wedges (31, 32) and are detachably connected to middle positions of the front and rear cross plate beams (33, 34) in the length direction.

8. The differential driven gear and wheel carrier housing assembly tooling of claim 6, wherein: both ends of the front and rear cross plate beams (33, 34) are provided with mesa-shaped protrusions (33 a, 34 b) facing the clamping cavity or facing away from the clamping cavity on the corresponding end face sides of the left and right wall plates (21, 22).