An outer layer surface oxidation prevention device for a differential case

Abstract

The present application relates to differential processing technical field, especially to a kind of outer layer surface layer anti-oxidation device for differential housing.The present application provides a kind of outer layer surface layer anti-oxidation device for differential housing without manual spraying.A kind of outer layer surface layer anti-oxidation device for differential housing, including outer frame, support plate, pressurizing cylinder, piston, storage tank and spray head, support plate is placed in the right part of outer frame, support plate top left side is connected with pressurizing cylinder, piston is slidably connected in pressurizing cylinder, support plate top is connected with storage tank by connecting rod, storage tank is communicated with pressurizing cylinder, one-way valve is connected between storage tank and pressurizing cylinder, storage tank left side is communicated with spray head by hose, spray head is inserted into outer frame, spray head left end is placed on outer frame.Motor drives screw rod shaft rotation, screw rod shaft drives piston to move left by connecting rod and extrude anti-oxidant, so that anti-oxidant is sprayed by spray head and evenly sprayed on differential housing, so, without manual spraying.

Description

TECHNICAL FIELD

[0001] The present application relates to differential processing technology field, especially to a differential housing outer layer surface anti-oxidation device. BACKGROUND

[0002] The differential is the mechanism that the driving wheel realizes rotating at different speeds, mainly composed of left and right half axle gears, two planetary gears and gear frame. The differential gear needs to be stored for a period of time from the completion of manufacturing to assembly, and the tooth structure on the differential gear needs to be coated with anti-oxidant agent when stored to avoid the oxidation of the connecting teeth on the gear. At present, the differential is usually fixed, and the worker manually holds the spray gun to spray the anti-oxidant agent on the differential. Manual spraying is very inconvenient, the coating work efficiency is low, the labor intensity of the worker is high, and it is not conducive to the processing of the differential.

[0003] How to design a differential housing outer layer surface anti-oxidation device without manual spraying is a technical problem to be solved by the present patent. SUMMARY

[0004] In order to overcome the current common practice of fixing the differential after completion, manually holding the spray gun to spray the anti-oxidant agent on the differential, the manual spraying is very inconvenient, the coating work efficiency is low, the labor intensity of the worker is high, and it is not conducive to the processing of the differential. The technical problem to be solved is to provide a differential housing outer layer surface anti-oxidation device without manual spraying.

[0005] The technical implementation scheme of the present application is: a differential housing outer layer surface anti-oxidation device, comprising an outer frame, a support plate, a pressurizing cylinder, a piston, a storage tank and a spray head, the support plate is placed on the right part of the outer frame, the pressurizing cylinder is connected to the top left side of the support plate, the piston is slidably connected inside the pressurizing cylinder, the storage tank is connected to the top of the support plate through a connecting rod, the storage tank is communicated with the pressurizing cylinder, a one-way valve is connected between the storage tank and the pressurizing cylinder, the spray head is communicated with the left side of the pressurizing cylinder through a hose, the spray head extends into the outer frame, the left end of the spray head is placed on the outer frame, and the device further comprises a fixing mechanism and a spraying mechanism, the fixing mechanism for fixing the differential housing is arranged on the left side inside the outer frame, the spraying mechanism is arranged on the top of the support plate, the spraying mechanism is connected with the piston, the spraying mechanism drives the piston to move left and right, the piston moves to the right to draw the anti-oxidant agent in the storage tank, the piston moves to the left to extrude the anti-oxidant agent, and the anti-oxidant agent is sprayed out through the spray head.

[0006] Preferably, the fixing mechanism comprises a first rotating shaft, a fixing frame, a first linear spring, fixing plates and pressing plates, the middle part of the left wall of the outer frame is rotatably connected with the first rotating shaft, the right part of the first rotating shaft is connected with the fixing frame, the right part of the fixing frame is slidably connected with the fixing plates on the front and back sides, the fixing plates are connected with the first linear spring, the first linear spring is sleeved on the fixing frame, the left part of the fixing plate is connected with the pressing plate, the fixing plate is moved inward by the pressing plate, the differential housing is sleeved on the fixing plate, and the fixing plate is moved outward under the action of the first linear spring to fix the differential housing.

[0007] Preferably, the spraying mechanism comprises a support rod, a motor, a screw rod shaft and a connecting rod, the top of the support plate is connected with the support rod on the left and right sides, the upper part of the support rod on the left side is provided with the motor, the upper part of the support rod on the right side is rotatably connected with the screw rod shaft, the left part of the screw rod shaft is connected with the output shaft of the motor through a shaft coupling, the right part of the piston is connected with the connecting rod, the upper part of the connecting rod is threadedly connected with the screw rod shaft, the motor drives the screw rod shaft to repeatedly move left and right, the connecting rod drives the piston to repeatedly move left and right to extrude the antioxidant in the pressurizing cylinder, and the antioxidant is sprayed out through the nozzle.

[0008] Preferably, the rotating mechanism for spraying the differential housing comprehensively by the nozzle is further comprised, the rotating mechanism comprises a bevel gear set, a second rotating shaft and a crank handle, the left part of the outer frame is rotatably connected with the second rotating shaft, the middle part of the second rotating shaft is connected with the left part of the first rotating shaft through the bevel gear set, the bevel gear set is composed of two bevel gears, the two bevel gears are meshed with each other, the front part of the second rotating shaft is connected with the crank handle, the second rotating shaft is rotated through the crank handle, the second rotating shaft drives the first rotating shaft, the fixing frame, the fixing plate and the differential housing to rotate through the bevel gear set, and the nozzle sprays the differential housing comprehensively.

[0009] Preferably, the adjusting mechanism for adjusting the height of the nozzle is further comprised, the adjusting mechanism comprises a pneumatic cylinder, a connecting block and guide columns, the right side of the lower part of the outer frame is provided with the pneumatic cylinder, the bottom of the support plate is connected with the connecting block in the middle, the connecting block is connected with the telescopic rod of the pneumatic cylinder, the right part of the outer frame is connected with the guide columns, the guide columns are slidably connected with the support plate, the pneumatic cylinder drives the connecting block to drive the support plate to ascend and descend, the support plate drives the pressurizing cylinder and the nozzle to ascend and descend, and the height of the nozzle is adjusted.

[0010] Preferably, the rotating mechanism for increasing the spraying range is further comprised, the rotating mechanism comprises a driving assembly, a rotating plate, a torsional spring and a connecting plate, the upper side of the right wall in the inner part of the outer frame is provided with the driving assembly for driving the rotating plate to rotate, the left side of the support plate is connected with the connecting plate, the left part of the connecting plate is rotatably connected with the rotating plate, the rotating plate is connected with the nozzle, the right part of the back side of the rotating plate is connected with the connecting plate through the torsional spring, the torsional spring is sleeved on the connecting plate, the support plate drives the connecting plate and the rotating plate to move upward, the driving assembly abuts against the rotating plate, and the rotating plate drives the nozzle to bend downward to spray.

[0011] Preferably, the driving assembly comprises a reset rod, a second linear spring and a moving rod, the reset rod is connected to the upper side of the right wall inside the outer frame, the moving rod is slidably connected to the reset rod, the rotating plate is in contact with the moving rod, the second linear spring is connected between the moving rod and the upper part of the reset rod, the second linear spring is sleeved on the reset rod, the moving rod abuts against the rotating plate, and the rotating plate drives the nozzle to bend downward for spraying.

[0012] Preferably, the shielding mechanism for closing the shielding door is further included, the shielding mechanism comprises a sliding block, the shielding door and a handle, the sliding block is slidably connected to the lower part of the front side of the outer frame, the shielding door is rotatably connected to the front side of the outer frame, the sliding block limits the shielding door, preventing the shielding door from being easily opened, the shielding door closes the outer frame, preventing the anti-oxidant from splashing out during spraying, and the handle is connected to the left side of the front wall of the shielding door.

[0013] The motor drives the screw rod shaft to rotate, the screw rod shaft drives the piston to move left through the connecting rod to extrude the anti-oxidant, the anti-oxidant is sprayed out through the nozzle and uniformly sprayed on the differential housing, so that manual spraying is not needed; the cylinder drives the connecting block to drive the supporting plate to ascend and descend, the supporting plate drives the pressurizing cylinder and the nozzle to ascend and descend, the height of the nozzle is adjusted; the supporting plate drives the connecting plate and the rotating plate to move upward, the moving rod abuts against the rotating plate, the rotating plate drives the nozzle to bend downward for spraying, and the spraying range is increased; the sliding block limits the shielding door, preventing the shielding door from being easily opened, and the shielding door closes the outer frame, preventing the anti-oxidant from splashing out during spraying. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a three-dimensional structure schematic view of the present application.

[0015] Figure 2 It is a three-dimensional structure schematic view of the present application without shielding mechanism.

[0016] Figure 3 It is a three-dimensional structure schematic view of the present application.

[0017] Figure 4 It is a three-dimensional structure schematic view of the present application.

[0018] Figure 5 It is a three-dimensional structure schematic view of the present application.

[0019] Figure 6 It is a three-dimensional structure schematic view of the present application.

[0020] Figure 7 It is a three-dimensional structure schematic view of the present application.

[0021] Figure 8 It is a three-dimensional structure schematic view of the present application from the first perspective.

[0022] Figure 9 A second perspective view of the rotating mechanism of the present application.

[0023] Figure 10 An enlarged perspective view of A of the present application.

[0024] Figure 11 A perspective view of the shielding mechanism of the present application.

[0025] Wherein: 1: outer frame, 2: support plate, 3: pressure cylinder, 31: piston, 4: storage tank, 5: spray head, 6: fixing mechanism, 61: first rotating shaft, 62: fixing frame, 63: first linear spring, 64: fixing plate, 65: pressing plate, 7: spraying mechanism, 71: support rod, 72: motor, 73: screw shaft, 74: connecting rod, 8: rotating mechanism, 81: bevel gear set, 82: second rotating shaft, 83: crank, 9: adjusting mechanism, 91: air cylinder, 92: connecting block, 93: guide column, 10: rotating mechanism, 101: reset rod, 102: second linear spring, 103: moving rod, 104: rotating plate, 105: torsional spring, 106: connecting plate, 11: shielding mechanism, 111: sliding block, 112: shielding door, 113: handle. DETAILED DESCRIPTION

[0026] The above solutions will be further described in conjunction with specific examples. It should be understood that these examples are used to illustrate the present application and do not limit the scope of the present application. The implementation conditions used in the examples can be further adjusted according to the specific conditions of the manufacturer, and the implementation conditions not specified are usually the conditions in the conventional experiments. Example 1

[0027] A kind of outer layer surface layer anti-oxidation device for differential housing, refer to Figures 1-5 , including outer frame 1, support plate 2, pressure cylinder 3, piston 31, storage tank 4, spray head 5, fixing mechanism 6 and spraying mechanism 7, support plate 2 is placed in the right part of outer frame 1, support plate 2 top left side is installed with pressure cylinder 3, pressure cylinder 3 is slidably connected with piston 31 in the inside, storage tank 4 is installed on the top of support plate 2 by connecting rod, storage tank 4 is communicated with pressure cylinder 3, one-way valve is connected between storage tank 4 and pressure cylinder 3, spray head 5 is communicated with pressure cylinder 3 left side by hose, spray head 5 extends into outer frame 1, spray head 5 is placed on outer frame 1, fixing mechanism 6 is arranged on the left side in the inside of outer frame 1, and fixing mechanism 6 is used to fix differential housing, spraying mechanism 7 is arranged on the top of support plate 2, and spraying mechanism 7 is connected with piston 31, and spraying mechanism 7 is used to spray anti-oxidant on differential housing. Refer to Figure 4, the fixing mechanism 6 comprises a first rotating shaft 61, a fixing frame 62, a first linear spring 63, fixing plates 64 and pressing plates 65, the first rotating shaft 61 is rotationally connected to the middle part of the left wall of the outer frame 1, the fixing frame 62 is connected to the right part of the first rotating shaft 61, the fixing plates 64 are slidingly connected to the right part of the fixing frame 62, the fixing plates 64 are used for fixing the differential housing, the first linear spring 63 is connected between the fixing plates 64 and is sleeved on the fixing frame 62, and the pressing plates 65 are welded to the left part of the fixing plates 64. Figure 5 , the spraying mechanism 7 comprises support rods 71, a motor 72, a screw rod shaft 73 and a connecting rod 74, the support rods 71 are welded to the top of the support plate 2, the motor 72 is installed on the upper part of the left support rod 71, the screw rod shaft 73 is rotationally connected to the upper part of the right support rod 71, the output shaft of the motor 72 is connected to the left part of the screw rod shaft 73 through a shaft coupling, the connecting rod 74 is connected to the right part of the piston 31, and the upper part of the connecting rod 74 is threadedly connected to the screw rod shaft 73. In use, people open the storage box 4, add an appropriate amount of antioxidant into the storage box 4, close the storage box 4, then manually move the pressing plates 65 inward, the pressing plates 65 drive the fixing plates 64 to move inward, the first linear spring 63 is compressed, then the differential housing is sleeved on the fixing plates 64, the pressing plates 65 are loosened, the fixing plates 64 and the pressing plates 65 are driven to move outward under the action of the first linear spring 63, the fixing plates 64 are fixed to the differential housing, then the first rotating shaft 61 is manually rotated, the first rotating shaft 61 drives the fixing frame 62, the first linear spring 63, the fixing plates 64, the pressing plates 65 and the differential housing to rotate, the motor 72 is started, the output shaft of the motor 72 drives the screw rod shaft 73 to rotate, the screw rod shaft 73 drives the connecting rod 74 to move rightward, then drives the piston 31 to move rightward, the piston 31 extracts the antioxidant in the storage box 4, so that the antioxidant enters the pressurizing cylinder 3, when the screw rod shaft 73 drives the connecting rod 74 to move leftward, then drives the piston 31 to move leftward, the piston 31 extrudes the antioxidant, so that the antioxidant is sprayed out through the spray head 5, the antioxidant is uniformly sprayed on the differential housing, after the spraying is completed, the motor 72 is turned off, the differential housing is taken off, the differential housing is separated from the fixing plates 64, then the pressing plates 65 and the fixing plates 64 are driven to move outward and reset under the action of the reset of the first linear spring 63. Embodiment 2

[0028] On the basis of embodiment 1, referring to Figure 1 , Figure 2 and Figure 6Still further comprising a rotating mechanism 8, the rotating mechanism 8 comprises a bevel gear set 81, a second rotating shaft 82 and a crank 83, the second rotating shaft 82 is rotatably connected to the left part of the outer frame 1, the bevel gear set 81 is keyed between the middle part of the second rotating shaft 82 and the left part of the first rotating shaft 61, the bevel gear set 81 is composed of two bevel gears which are engaged with each other, and the crank 83 is connected to the front part of the second rotating shaft 82. People manually rotate the second rotating shaft 82 through the crank 83, the second rotating shaft 82 drives the first rotating shaft 61 to rotate through the bevel gear set 81, and the first rotating shaft 61 drives the fixed frame 62, the first linear spring 63, the fixed plate 64, the pressing plate 65 and the differential housing to rotate, so that the spray head 5 fully sprays the differential housing.

[0029] With reference to Figure 1 、 Figure 2 and Figure 7 Still further comprising an adjusting mechanism 9, the adjusting mechanism 9 comprises a pneumatic cylinder 91, a connecting block 92 and guide columns 93, the pneumatic cylinder 91 is installed at the right lower part of the outer frame 1, the connecting block 92 is welded at the bottom middle part of the support plate 2, the connecting block 92 is connected with the telescopic rod of the pneumatic cylinder 91, and the four guide columns 93 are connected to the right part of the outer frame 1 and are slidably connected with the support plate 2. People start the pneumatic cylinder 91, control the telescopic rod of the pneumatic cylinder 91 to drive the connecting block 92 to move up and down, and then drive the support plate 2 to move up and down, the support plate 2 drives the pressurizing cylinder 3 and the spray head 5 to move up and down, so as to adjust the height of the spray head 5, and make the spray head 5 accurately aim at the differential housing. After the height is adjusted, the pneumatic cylinder 91 can be closed.

[0030] With reference to Figure 1 、 Figure 2 、 Figure 8 、 Figure 9 and Figure 10Further comprising a rotating mechanism 10, the rotating mechanism 10 comprises a driving assembly, a rotating plate 104, a torsion spring 105 and a connecting plate 106, the right side upper part of the inner wall of the outer frame 1 is provided with the driving assembly for driving the rotating plate 104 to rotate, the left side of the supporting plate 2 is welded with the connecting plate 106, the left part of the connecting plate 106 is rotatably connected with the rotating plate 104, the rotating plate 104 is connected with the nozzle 5, the right part of the rear side of the rotating plate 104 is connected with the connecting plate 106 through the torsion spring 105, and the torsion spring 105 is sleeved on the connecting plate 106. The driving assembly comprises a reset rod 101, a second linear spring 102 and a moving rod 103, the reset rod 101 is connected with the right side upper part of the inner wall of the outer frame 1, the moving rod 103 is slidably connected with the reset rod 101, the rotating plate 104 is in contact with the moving rod 103, the second linear spring 102 is connected between the moving rod 103 and the upper part of the reset rod 101, and the second linear spring 102 is sleeved on the reset rod 101. When the supporting plate 2 and the nozzle 5 move upwards, the connecting plate 106 is driven to move upwards, the connecting plate 106 drives the rotating plate 104 and the torsion spring 105 to move upwards, the rotating plate 104 extrudes the moving rod 103 upwards, the second linear spring 102 is compressed, the moving rod 103 moves upwards to the limit, the moving rod 103 drives the rotating plate 104 to rotate, the torsion spring 105 is deformed, the rotating plate 104 drives the nozzle 5 to bend downwards for spraying, the spraying range is increased, and the differential housing is finely sprayed, when the supporting plate 2 and the nozzle 5 move downwards to reset, the connecting plate 106 is driven to move downwards, the connecting plate 106 drives the rotating plate 104 and the torsion spring 105 to move downwards, and then the rotating plate 104 and the nozzle 5 are reset under the action of the torsion spring 105, and then the moving rod 103 is driven to move downwards to reset under the action of the reset of the second linear spring 102.

[0031] With reference to Figure 1 , Figure 2 and Figure 11 Further comprising a shielding mechanism 11, the shielding mechanism 11 comprises a sliding block 111, a shielding door 112 and a handle 113, the front lower part of the outer frame 1 is slidably connected with the sliding block 111, the front side of the outer frame 1 is rotatably connected with the shielding door 112, the sliding block 111 is in contact with the shielding door 112, the sliding block 111 is used for limiting the shielding door 112, the shielding door 112 is used for closing the outer frame 1, and the left side of the front wall of the shielding door 112 is connected with the handle 113. The sliding block 111 is manually moved to the right, so that the sliding block 111 is separated from the shielding door 112, the shielding door 112 is manually opened through the handle 113, the differential housing can be placed in the outer frame 1 for spraying, the shielding door 112 is manually closed through the handle 113, the anti-oxidant is prevented from splashing out during spraying, the sliding block 111 is manually moved to the left to reset, the sliding block 111 limits the shielding door 112, and the differential housing can be taken out by repeating the above operation.

[0032] It should be understood that the foregoing description is only for the purpose of illustration. It is not intended to limit the application. Those skilled in the art will appreciate variations from the teachings provided herein. It is therefore contemplated to cover by the following claims any and all variations coming within the scope of the claims.

Claims

1. An anti-oxidation device for the outer surface of a differential housing, comprising an outer frame (1), a support plate (2), a pressure cylinder (3), a piston (31), a storage box (4), and a nozzle (5), wherein the support plate (2) is placed on the right side of the outer frame (1), the pressure cylinder (3) is connected to the top left side of the support plate (2), the piston (31) is slidably connected inside the pressure cylinder (3), the storage box (4) is connected to the top of the support plate (2) via a connecting rod, the storage box (4) is connected to the pressure cylinder (3), a one-way valve is connected between the storage box (4) and the pressure cylinder (3), and the nozzle (5) is connected to the left side of the pressure cylinder (3) via a hose, the nozzle (5) extends into the outer frame (1), and the left end of the nozzle (5) is placed on the outer frame (1), characterized in that: It also includes a fixing mechanism (6) and a spraying mechanism (7). The fixing mechanism (6) for fixing the differential housing is provided on the left side inside the outer frame (1). The top of the support plate (2) is provided with a spraying mechanism (7). The spraying mechanism (7) is connected to the piston (31). The spraying mechanism (7) drives the piston (31) to move left and right. The piston (31) moves to the right to extract the antioxidant in the storage box (4). The piston (31) moves to the left to squeeze the antioxidant. The antioxidant is sprayed out through the nozzle (5). The fixing mechanism (6) includes a first rotating shaft (61), a fixing frame (62), a first linear spring (63), a fixing plate (64), and a pressure plate (65). The first rotating shaft (61) is rotatably connected to the middle of the left wall of the outer frame (1). The fixing frame (62) is connected to the right side of the first rotating shaft (61). The fixing plate (64) is slidably connected to both the front and rear sides of the right side of the fixing frame (62). The first linear spring (63) is connected between the fixing plates (64). The first linear spring (63) is sleeved on the fixing frame (62). The pressure plate (65) is connected to the outer side of the left side of the fixing plate (64). The fixing plate (64) is moved inward by the pressure plate (65) to put the differential housing on the fixing plate (64). Under the action of the first linear spring (63), the fixing plate (64) moves outward to fix the differential housing. It also includes an adjustment mechanism (9) for adjusting the height of the nozzle (5). The adjustment mechanism (9) includes a cylinder (91), a connecting block (92) and a guide post (93). The cylinder (91) is installed on the lower right side of the outer frame (1). The connecting block (92) is connected to the middle of the bottom of the support plate (2). The connecting block (92) is connected to the telescopic rod of the cylinder (91). The guide post (93) is connected to the right side of the outer frame (1). The guide post (93) is slidably connected to the support plate (2). The cylinder (91) drives the connecting block (92) to lift the support plate (2). The support plate (2) lifts the pressure cylinder (3) and the nozzle (5) to adjust the height of the nozzle (5). It also includes a rotating mechanism (10) for increasing the spraying range. The rotating mechanism (10) includes a driving component, a rotating plate (104), a torsion spring (105) and a connecting plate (106). The upper right side of the inner frame (1) is provided with a driving component for driving the rotating plate (104) to rotate. The left side of the support plate (2) is connected to the connecting plate (106). The left side of the connecting plate (106) is rotatably connected to the rotating plate (104). The rotating plate (104) is connected to the nozzle (5). The right rear side of the rotating plate (104) is connected to the connecting plate (106) with the torsion spring (105). The torsion spring (105) is sleeved on the connecting plate (106). The support plate (2) drives the connecting plate (106) and the rotating plate (104) to move upward. The driving component abuts against the rotating plate (104). The rotating plate (104) drives the nozzle (5) to bend downward for spraying. The drive assembly includes a reset rod (101), a second linear spring (102), and a moving rod (103). The reset rod (101) is connected to the upper right wall inside the outer frame (1). The moving rod (103) is slidably connected to the reset rod (101). The rotating plate (104) contacts the moving rod (103). The second linear spring (102) is connected between the moving rod (103) and the upper part of the reset rod (101). The second linear spring (102) is sleeved on the reset rod (101). The moving rod (103) abuts against the rotating plate (104). The rotating plate (104) drives the nozzle (5) to bend downward for spraying.

2. The differential housing outer surface anti-oxidation device according to claim 1, characterized in that: The spraying mechanism (7) includes a support rod (71), a motor (72), a lead screw shaft (73), and a connecting rod (74). The support plate (2) is connected to the support rods (71) on both the left and right sides. The motor (72) is installed on the upper part of the support rod (71) on the left side. The lead screw shaft (73) is rotatably connected to the upper part of the support rod (71) on the right side. The left part of the lead screw shaft (73) is connected to the output shaft of the motor (72) through a coupling. The connecting rod (74) is connected to the right part of the piston (31). The upper part of the connecting rod (74) is threadedly connected to the lead screw shaft (73). The motor (72) drives the lead screw shaft (73) to drive the connecting rod (74) to move left and right repeatedly. The connecting rod (74) drives the piston (31) to move left and right repeatedly to squeeze the antioxidant in the pressure cylinder (3). The antioxidant is sprayed out through the nozzle (5).

3. The differential housing outer surface anti-oxidation device according to claim 2, characterized in that: It also includes a rotating mechanism (8) for the spray nozzle (5) to spray the differential housing. The rotating mechanism (8) includes a bevel gear set (81), a second rotating shaft (82) and a crank (83). The second rotating shaft (82) is rotatably connected to the left side of the outer frame (1). The bevel gear set (81) is connected between the middle of the second rotating shaft (82) and the left side of the first rotating shaft (61). The bevel gear set (81) consists of two bevel gears that mesh with each other. The crank (83) is connected to the front of the second rotating shaft (82). The second rotating shaft (82) is rotated by the crank (83). The second rotating shaft (82) drives the first rotating shaft (61), the fixed frame (62), the fixed plate (64) and the differential housing to rotate through the bevel gear set (81). The spray nozzle (5) sprays the differential housing.

4. The anti-oxidation device for the outer surface of a differential housing according to claim 1, characterized in that: It also includes a shielding mechanism (11) for closing the shielding door (112). The shielding mechanism (11) includes a slider (111), a shielding door (112) and a handle (113). The slider (111) is slidably connected to the lower front side of the outer frame (1), and the shielding door (112) is rotatably connected to the front side of the outer frame (1). The slider (111) limits the shielding door (112) to prevent the shielding door (112) from being easily opened. The shielding door (112) closes the outer frame (1) to prevent the anti-oxidant from splashing out during spraying. The handle (113) is connected to the left side of the front wall of the shielding door (112).

Images