A differential housing rust-proof treatment device

Abstract

The present application relates to the production manufacturing field, especially to a differential housing rust-proof treatment equipment, which can spray rust-proof oil on the differential housing from multiple directions to improve the rust-proof effect. The differential housing rust-proof treatment equipment comprises a treatment machine body and a first oil pump, etc., the top middle of the treatment machine body is connected with the first oil pump, the first oil pump is communicated with an external oil storage tank, and further comprises an internal spraying mechanism and a bottom spraying mechanism, etc., the upper part of the treatment machine body is provided with the internal spraying mechanism for spraying rust-proof oil on the inside of the differential housing, and the lower part of the treatment machine body is provided with the bottom spraying mechanism for spraying rust-proof oil on the bottom of the differential housing. The present application can spray rust-proof oil on the inside of the differential housing through the sprayer and on the bottom of the differential housing through the second nozzle, so as to realize the effect of spraying rust-proof oil on the differential housing from multiple directions and improve the rust-proof performance of the differential housing.

Description

Technical Field

[0001] This invention relates to the field of manufacturing, and in particular to a rust prevention treatment device for differential housings. Background Technology

[0002] After the differential housing is manufactured, rust-preventive oil needs to be sprayed on the surface of the differential housing to improve its rust resistance.

[0003] Patent publication number CN206104175U discloses a differential rust-preventive oil spraying device, including a differential, oil pump, oil tank, oil pipeline, nozzle, sealing cover, active rotating device, and support frame. The oil pump, oil tank, and nozzle are connected by oil pipelines. The sealing cover is placed on the support frame. The support frame is fixed to the foundation. The motor is fixed to the foundation by a motor mounting plate. In use, the differential housing is first fixed on the rotating device, and then the rotating device drives the differential housing to rotate. At the same time, the rust-preventive oil is sprayed from the nozzle onto the differential housing. However, because the nozzle is located above the differential housing, the rust-preventive oil is only sprayed downwards from the top of the differential housing. It is difficult for the inside of the differential housing to be sprayed with rust-preventive oil, resulting in incomplete spraying and some areas not being sprayed with rust-preventive oil, leading to poor rust prevention effect of the differential housing.

[0004] To address the aforementioned shortcomings, we have designed a differential housing rust prevention treatment device capable of spraying rust-preventive oil onto the differential housing from multiple directions to improve the rust prevention effect, thereby overcoming the difficulty in applying rust-preventive oil to the differential housing from multiple directions in existing technologies. Summary of the Invention

[0005] In order to overcome the shortcomings of existing technologies that make it difficult to apply rust-preventive oil to the differential housing from multiple directions and result in poor rust prevention, this invention provides a differential housing rust prevention treatment device that can apply rust-preventive oil to the differential housing from multiple directions and improve the rust prevention effect.

[0006] A differential housing rust prevention treatment device includes a treatment machine body, a first oil pump, a first oil supply pipe, a first nozzle, a motor, and a rotating component. The first oil pump is connected to the top center of the treatment machine body and is connected to an external oil storage tank. The first oil supply pipes, made of hard rubber, are connected to the left and right sides of the first oil pump. The first oil supply pipes are all connected to the first oil pump. The lower left and right sides of the inner wall of the treatment machine body are uniformly and rotatably connected to the first nozzles, which are all connected to the first oil supply pipes. The motor is connected to the bottom wall of the treatment machine body, and a rotating component is connected to the output shaft of the motor. The rotating component is rotatably connected to the lower part of the treatment machine body. The device also includes a clamping assembly, an internal spraying mechanism, and a bottom spraying mechanism. The rotating component is equipped with a clamping assembly for clamping the differential housing. The upper part of the treatment machine body is equipped with an internal spraying mechanism for spraying rust-preventive oil inside the differential housing, and the lower part of the treatment machine body is equipped with a bottom spraying mechanism for spraying rust-preventive oil on the bottom of the differential housing.

[0007] Optionally, the clamping assembly includes a fixing member and a return spring. The fixing member is slidably connected to both the left and right sides of the upper part of the rotating member. A return spring is connected between the fixing member and the inner wall of the rotating member. The return spring is wound around the fixing member.

[0008] Optionally, the internal spraying mechanism includes a first electric push rod, a pressing component, a sleeve, an oblique pushing component, a sprayer, and a tension box. The first electric push rod is connected to the upper part of the treatment machine body. The pressing component is connected to the telescopic rod of the first electric push rod. The top of the pressing component is connected to the first oil pump through a hose. The sleeve is slidably connected to the outer wall of the pressing component. The oblique pushing component is rotatably connected to the left and right sides of the middle part of the pressing component. The tension box is slidably connected to the left and right sides of the lower part of the sleeve. A tension spring is connected between the tension box and the sleeve. The sprayer is connected to the top of the tension box. The sprayer is connected to the pressing component. The lower part of the oblique pushing component is rotatably connected to the sprayer.

[0009] Optionally, the feature is that: the bottom spraying mechanism includes a second oil pump, a second oil pipe, a second nozzle, and a sliding frame; the second oil pump is connected to the lower left part of the treatment machine body; the second oil pump is connected to an external oil storage tank; the second oil pipe is connected to the upper right side of the second oil pump; the second oil pipe is made of hard rubber and is connected to the second oil pump; sliding frames are slidably connected to the lower left and right sides of the treatment machine body; and second nozzles are rotatably connected to the sliding frames; and the second nozzles are all connected to the second oil pipe.

[0010] Optionally, it is characterized by: further comprising a spraying mechanism for uniformly spraying rust-preventive oil onto the outside of the differential housing, the uniform spraying mechanism comprising a second electric push rod and a rack, the outside of the first nozzle being equipped with teeth, the upper left and right sides of the inner wall of the processing machine body being connected to the second electric push rod, the telescopic rod of the second electric push rod being connected to the rack, the rack being engaged with the teeth on the outside of the first nozzle.

[0011] Optionally, it is characterized by: further comprising a squeezing mechanism for driving the second nozzle to move inward and outward, the squeezing mechanism comprising a wedge-shaped squeezing block, a compression spring and a torsion spring, a compression spring connected between the outer side of the sliding frame and the processor body, the compression springs being wound around the processor body, a torsion spring connected between the lower front and rear sides of the second nozzle and the sliding frame, the torsion springs being wound around the sliding frame, and a wedge-shaped squeezing block uniformly connected along the circumferential direction at the top of the rotating component, the wedge-shaped squeezing block being squeezed and engaged with the second nozzle.

[0012] Optionally, it is characterized by: further including a drag reduction mechanism for reducing drag when the differential housing rotates, the drag reduction mechanism including a drag reduction ring and balls, the lower part of the sleeve being rotatably connected to the drag reduction ring, and the inside of the drag reduction ring being uniformly rotatably connected to the balls in the circumferential direction, the balls being located between the drag reduction ring and the sleeve.

[0013] Optionally, it also includes a coating block for applying anti-rust oil to the upper part of the differential housing, with the coating blocks evenly connected along the circumferential direction on the outer wall of the sleeve.

[0014] Beneficial effects: 1. The present invention achieves the effect of spraying anti-rust oil on the inside of the differential housing by spraying it with a sprayer and spraying anti-rust oil on the bottom of the differential housing by a second sprayer, thereby improving the anti-rust performance of the differential housing.

[0015] 2. By moving the rack up and down, the first spray head can rotate up and down, so as to evenly spray the anti-rust oil onto the outside of the differential housing, thereby improving the spraying effect.

[0016] 3. The present invention, through the cooperation between the wedge-shaped extrusion block, the compression spring and the torsion spring, enables the second nozzle to move inward and outward and rotate inward and outward, so that the spraying range of the second nozzle is wider, the spraying effect of the second nozzle is improved, and the anti-rust oil sprayed on the bottom of the differential housing is more uniform.

[0017] 4. This invention, through the cooperation between the drag-reducing ring and the ball bearing, can reduce drag when the differential housing rotates, thus avoiding affecting the rotation of the differential housing and improving the spraying efficiency.

[0018] 5. By moving the rust-preventive oil-soaked applicator upwards, the present invention can apply the rust-preventive oil to the upper part of the differential housing, making the rust-preventive oil on the differential housing more comprehensive and enhancing the rust resistance of the differential housing. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0020] Figure 2 This is a partial three-dimensional structural schematic diagram of the present invention.

[0021] Figure 3 This is a three-dimensional structural diagram of the internal spraying mechanism of the present invention.

[0022] Figure 4 This is a partial cross-sectional three-dimensional structural diagram of the internal spraying mechanism of the present invention.

[0023] Figure 5 This is a schematic diagram of the first three-dimensional structure of the bottom spraying mechanism of the present invention.

[0024] Figure 6 This is a schematic diagram of a second three-dimensional structure of the bottom spraying mechanism of the present invention.

[0025] Figure 7 This is a three-dimensional structural diagram of the uniform spraying mechanism of the present invention.

[0026] Figure 8 This is a three-dimensional structural diagram of the extrusion mechanism of the present invention.

[0027] Figure 9 This is a partial three-dimensional structural schematic diagram of the extrusion mechanism of the present invention.

[0028] Figure 10 This is a three-dimensional structural diagram of the second nozzle, torsion spring, and sliding frame of the present invention.

[0029] Figure 11 This is a three-dimensional structural diagram of the drag reduction mechanism of the present invention from a first perspective.

[0030] Figure 12 This is a two-dimensional structural diagram of the drag reduction mechanism of the present invention from a second perspective.

[0031] The meanings of the reference numerals in the figure are as follows: 1: Processor body, 2: First oil pump, 21: First oil supply pipe, 3: First nozzle, 4: Motor, 5: Rotating component, 51: Fixed component, 52: Return spring, 6: Internal spraying mechanism, 61: First electric push rod, 62: Pressing component, 63: Sleeve, 64: Angled push component, 65: Sprayer, 66: Tension box, 67: Tension spring, 7: Bottom spraying mechanism, 71: Second oil pump, 72: Second oil supply pipe, 73: Second nozzle, 74: Sliding frame, 8: Uniform spraying mechanism, 81: Second electric push rod, 82: Rack, 9: Extrusion mechanism, 91: Wedge-shaped extrusion block, 92: Compression spring, 93: Torsion spring, 10: Drag reduction mechanism, 101: Drag reduction ring, 102: Ball bearing, 11: Application block. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Example 1

[0034] A differential housing rust prevention treatment device, such as Figure 1 and Figure 2 As shown, the device includes a processor body 1, a first oil pump 2, a first oil delivery pipe 21, a first nozzle 3, a motor 4, a rotating component 5, a clamping assembly, an internal spraying mechanism 6, and a bottom spraying mechanism 7. The first oil pump 2 is bolted to the top center of the processor body 1 and is connected to an external oil storage tank. There are two first oil delivery pipes 21, which are fixed to the left and right sides of the first oil pump 2, respectively. The first oil delivery pipes 21 are made of hard rubber and are connected to the first oil pump 2. Three first nozzles are rotatably connected to the lower left and right sides of the inner wall of the processor body 1. The nozzle 3 and the first nozzle 3 are both connected to the first oil supply pipe 21. The motor 4 is bolted to the bottom wall of the processor body 1. The rotating part 5 is connected to the output shaft of the motor 4 through a coupling. The rotating part 5 is rotatably connected to the lower part of the processor body 1. The rotating part 5 is equipped with a clamping assembly, which can clamp the differential housing. The upper part of the processor body 1 is equipped with an internal spraying mechanism 6, which can spray anti-rust oil on the inside of the differential housing. The lower part of the processor body 1 is equipped with a bottom spraying mechanism 7, which can spray anti-rust oil on the bottom of the differential housing.

[0035] like Figure 2 As shown, the clamping assembly includes a fixing member 51 and a return spring 52. There are two fixing members 51, which are slidably connected to the left and right sides of the upper part of the rotating member 5. There are two return springs 52, which are connected between the fixing member 51 and the inner wall of the rotating member 5. The return springs 52 are both wound around the fixing member 51.

[0036] like Figure 1 , Figure 3 and Figure 4As shown, the internal spraying mechanism 6 includes a first electric push rod 61, a pressing member 62, a sleeve 63, an inclined pushing member 64, a sprayer 65, and a tension box 66. The first electric push rod 61 is bolted to the upper part of the processor body 1. The pressing member 62 is connected to the telescopic rod of the first electric push rod 61. The top of the pressing member 62 is connected to the first oil pump 2 through a hose. The sleeve 63 is slidably connected to the outer wall of the pressing member 62. There are two inclined pushing members 64, which are rotatably connected to each other. The lower pressure member 62 is connected to the left and right sides of the middle. There are two tension boxes 66, which are slidably connected to the left and right sides of the lower part of the sleeve 63. There are two tension springs 67, which are connected between the tension box 66 and the sleeve 63. There are two sprayers 65, which are fixed to the top of the tension box 66. Both sprayers 65 are connected to the lower pressure member 62, and the lower part of the inclined push-out member 64 is rotatably connected to the sprayer 65.

[0037] like Figure 1 , Figure 5 and Figure 6 As shown, the bottom spraying mechanism 7 includes a second oil pump 71, a second oil supply pipe 72, a second nozzle 73, and a sliding frame 74. The second oil pump 71 is connected to the lower left part of the processor body 1 and is connected to an external oil storage tank. The second oil supply pipe 72 is fixed to the upper right side of the second oil pump 71 and is connected to the second oil pump 71. There are two sliding frames 74, which are slidably connected to the lower left and right sides of the processor body 1. There are two second nozzles 73, which are rotatably connected to the sliding frames 74. Both second nozzles 73 are connected to the second oil supply pipe 72.

[0038] When rust prevention treatment is needed for the differential housing, rust-preventive oil can be sprayed onto the differential housing using this differential housing rust prevention treatment equipment. First, the fixing member 51 is pulled outward, compressing the return spring 52. Then, the differential housing is placed on the rotating member 5, with the lower part of the differential housing positioned between the two fixing members 51. After the differential housing is placed, the fixing members 51 are released, and under the action of the return spring 52, the fixing members 51 move inward, clamping and fixing the lower part of the differential housing. Then, the motor 4 is turned on, causing the output shaft of the motor 4 to drive the rotating member 5, the fixing member 51, and the differential housing to rotate. Subsequently, the first oil pump 2 is turned on, and the first oil pump 2 transmits the external rust-preventive oil through the first oil supply pipe 21. The oil is delivered to the first nozzle 3, which then sprays the rust-preventive oil onto the differential housing. Since the differential housing is rotating, this ensures the rust-preventive oil is evenly sprayed onto the outside of the differential housing. Simultaneously, the first electric push rod 61 is activated, causing its extension rod to extend and drive the lower pressure member 62 and sleeve 63 downwards. This causes the sleeve 63 to move into the differential housing. When the lower side of the sleeve 63 moves downwards and contacts the middle of the differential housing, the differential housing will block the sleeve 63. As the extension rod of the first electric push rod 61 continues to drive the lower pressure member 62 downwards, the lower pressure member 62 will then press against the inclined push member 64, driving the inclined push member 64 to rotate outwards. Open the sprayer 65 and push the tension box 66 outwards, causing the sprayer 65 to move out of the sleeve 63. Simultaneously, the tension spring 67 is stretched. At this time, the first oil pump 2 also delivers external rust-preventive oil to the sprayer 65 through the pressure member 62. The sprayer 65 then sprays the rust-preventive oil outwards. Since the differential housing is rotating, this ensures even spraying of rust-preventive oil inside the differential housing. When it is necessary to spray rust-preventive oil on the bottom of the differential housing, the second oil pump 71 is turned on. The second oil pump 71 operates, delivering external rust-preventive oil through the second oil pipe 72 to the second nozzle 73, which then sprays it out. This completes the spraying work on the bottom of the differential housing. When the rust-preventive oil on the differential housing... After the oil spraying is completed, the first oil pump 2, motor 4 and second oil pump 71 are turned off. Then, the first electric push rod 61 is controlled to retract, causing the first electric push rod 61 to drive the lower pressure member 62 and sleeve 63 to move upward. Since the lower side of the sleeve 63 is no longer in contact with the middle of the differential housing, the lower pressure member 62 does not apply force to the oblique push member 64. Under the action of the tension spring 67, the tension box 66 drives the sprayer 65 to move inward. Subsequently, the oblique push member 64 rotates inward to reset. Then, the differential housing sprayed with rust-preventive oil can be removed. Repeating the above operation can spray rust-preventive oil on the differential housing in multiple directions, achieving the purpose of rust prevention treatment of the differential housing, and the treatment effect is high.

[0039] Example 2

[0040] Based on Example 1, such as Figure 1 and Figure 7 As shown, it also includes a spraying mechanism. The uniform spraying mechanism 8 includes a second electric push rod 81 and a rack 82. The first nozzle 3 has teeth on its outside. There are two second electric push rods 81, which are welded to the upper left and right sides of the inner wall of the processor body 1. There are two racks 82, which are fixed to the telescopic rods of the second electric push rods 81. The racks 82 mesh with the teeth on the outside of the first nozzle 3.

[0041] During the application of rust-preventive oil, when the first spray head 3 needs to be rotated, the second electric push rod 81 is opened, and the telescopic rod of the second electric push rod 81 is controlled to extend and retract, which in turn drives the rack 82 to move up and down. Since the rack 82 meshes with the teeth on the first spray head 3, when the rack 82 moves up and down, the rack 82 also drives the first spray head 3 to rotate up and down. This allows the rust-preventive oil to be sprayed more evenly onto the outside of the differential housing, improving the uniformity of the spray and making the rust prevention effect better. After the rust-preventive oil has been sprayed onto the differential housing, the second electric push rod 81 can be closed.

[0042] like Figure 1 , Figure 8 , Figure 9 and Figure 10 As shown, it also includes a squeezing mechanism 9, which includes a wedge-shaped squeezing block 91, a compression spring 92, and a torsion spring 93. There are two compression springs 92, which are respectively connected between the outside of the sliding frame 74 and the processing machine body 1. The compression springs 92 are all wound around the processing machine body 1. There are four torsion springs 93, which are respectively connected between the front and rear sides of the lower part of the second nozzle 73 and the sliding frame 74. The torsion springs 93 are all wound around the sliding frame 74. Multiple wedge-shaped squeezing blocks 91 are connected to the top of the rotating part 5 along the circumferential direction. The wedge-shaped squeezing blocks 91 are squeezed and engaged with the second nozzle 73.

[0043] When the rotating component 5 rotates, it also drives the wedge-shaped extrusion block 91 to rotate. When the wedge-shaped extrusion block 91 rotates and contacts the second nozzle 73, it will push the second nozzle 73 outward, and then drive the sliding frame 74 to move outward. The compression spring 92 is compressed, and the wedge-shaped extrusion block 91 will also push the second nozzle 73 to rotate outward. As a result, the torsion spring 93 twists and deforms. When the wedge-shaped extrusion block 91 rotates away from the second nozzle 73, the second nozzle 73 will rotate inward under the action of the torsion spring 93. Under the action of the compression spring 92, the sliding frame 74 will also drive the second nozzle 73 to move inward. In this way, the second nozzle 73 can move inward and outward and rotate inward and outward, expanding the spraying range of the second nozzle 73, making the bottom of the differential housing more comprehensively coated and enhancing the coating effect.

[0044] like Figure 1 , Figure 11 and Figure 12 As shown, it also includes a drag reduction mechanism 10, which includes a drag reduction ring 101 and ball bearings 102. The drag reduction ring 101 is rotatably connected to the lower part of the sleeve 63. Multiple ball bearings 102 are rotatably connected inside the drag reduction ring 101 in the circumferential direction. All ball bearings 102 are located between the drag reduction ring 101 and the sleeve 63.

[0045] When sleeve 63 moves downward, it also drives drag-reducing ring 101 downward to contact the middle of the differential housing. Subsequently, when the differential housing rotates, it also drives drag-reducing ring 101 to rotate, and the ball bearing 102 rolls. This avoids friction between the differential housing and sleeve 63, preventing the differential housing from being obstructed during rotation and making the rotation of the differential housing smoother, thus improving spraying efficiency. When the differential housing stops rotating, drag-reducing ring 101 also stops rotating, and the ball bearing 102 stops rolling. At the same time, when sleeve 63 moves upward, it also drives drag-reducing ring 101 to move upward. In summary, this avoids obstruction during the rotation of the differential housing and improves spraying efficiency.

[0046] like Figure 1 and Figure 11 As shown, it also includes an applicator block 11. The applicator block 11 is evenly connected to the outer wall of the sleeve 63 along the circumferential direction. The applicator block 11 can apply anti-rust oil to the upper part of the differential housing.

[0047] When the sleeve 63 moves the coating block 11 downwards into the differential housing, the first nozzle 3 sprays rust-preventive oil onto the differential housing. Subsequently, when the sleeve 63 moves the coating block 11 upwards, the coating block 11 will contact the upper part of the differential housing as it moves upwards. Therefore, the coating block 11 will apply rust-preventive oil to the upper part of the differential housing, thus improving the overall coverage of the rust-preventive oil coating on the differential housing.

[0048] The embodiments described above are merely preferred embodiments of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications, improvements, and substitutions without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A differential housing anti-rust treatment device, comprising a treatment machine body (1), a first oil pump (2), a first oil pipe (21), a first nozzle (3), a motor (4), and a rotating component (5), wherein the first oil pump (2) is connected to the middle of the top of the treatment machine body (1), the first oil pump (2) is connected to an external oil storage tank, the first oil pump (2) is connected to the first oil pipe (21) on both the left and right sides, the first oil pipe (21) is made of hard rubber, and the first oil pipe (21) is connected to the first oil pump (2), the lower left and right sides of the inner wall of the treatment machine body (1) are respectively uniformly rotatably connected to the first nozzle (3), the first nozzle (3) is connected to the first oil pipe (21), the inner bottom wall of the treatment machine body (1) is connected to the motor (4), the output shaft of the motor (4) is connected to the rotating component (5), and the rotating component (5) is rotatably connected to the lower part of the treatment machine body (1), characterized in that: It also includes a clamping assembly, an internal spraying mechanism (6) and a bottom spraying mechanism (7). The rotating part (5) is provided with a clamping assembly for clamping the differential housing. The upper part of the processor body (1) is provided with an internal spraying mechanism (6) for spraying anti-rust oil inside the differential housing, and the lower part of the processor body (1) is provided with a bottom spraying mechanism (7) for spraying anti-rust oil at the bottom of the differential housing. The clamping assembly includes a fixing member (51) and a return spring (52). The fixing member (51) is slidably connected to the upper left and right sides of the rotating member (5). The return spring (52) is connected between the fixing member (51) and the inner wall of the rotating member (5). The return spring (52) is wound around the fixing member (51). The internal spraying mechanism (6) includes a first electric push rod (61), a pressing component (62), a sleeve (63), an inclined pushing component (64), a sprayer (65), and a stretching box (66). The first electric push rod (61) is connected to the upper part of the processing machine body (1). The pressing component (62) is connected to the telescopic rod of the first electric push rod (61). The top of the pressing component (62) is connected to the first oil pump (2) through a hose. The sleeve (63) is slidably connected to the outer wall of the pressing component (62). 3) The left and right sides of the middle part of the pressing part (62) are rotatably connected to the oblique push-out part (64), the left and right sides of the lower part of the sleeve (63) are slidably connected to the tension box (66), the tension box (66) and the sleeve (63) are connected to the tension spring (67), the top of the tension box (66) is connected to the sprayer (65), the sprayer (65) is connected to the pressing part (62), and the lower part of the oblique push-out part (64) is rotatably connected to the sprayer (65); The bottom spraying mechanism (7) includes a second oil pump (71), a second oil pipe (72), a second nozzle (73), and a sliding frame (74). The lower left part of the processor body (1) is connected to the second oil pump (71), which is connected to an external oil storage tank. The upper right side of the second oil pump (71) is connected to the second oil pipe (72), which is made of hard rubber. The second oil pipe (72) is connected to the second oil pump (71). The lower left and right sides of the processor body (1) are slidably connected to the sliding frame (74), and the sliding frame (74) is rotatably connected to the second nozzle (73). The second nozzle (73) is connected to the second oil pipe (72).

2. A differential housing rust prevention treatment device according to claim 1, characterized in that: It also includes a spraying mechanism for uniformly spraying rust-preventive oil onto the outside of the differential housing. The uniform spraying mechanism (8) includes a second electric push rod (81) and a rack (82). The first nozzle (3) has teeth on its outside. The upper left and right sides of the inner wall of the processor body (1) are connected to the second electric push rod (81). The telescopic rod of the second electric push rod (81) is connected to the rack (82). The rack (82) meshes with the teeth on the outside of the first nozzle (3).

3. A differential housing rust prevention treatment device according to claim 2, characterized in that: It also includes a squeezing mechanism (9) for driving the second nozzle (73) to move in and out. The squeezing mechanism (9) includes a wedge-shaped squeezing block (91), a compression spring (92) and a torsion spring (93). A compression spring (92) is connected between the outer side of the sliding frame (74) and the processor body (1). The compression springs (92) are all wound around the processor body (1). A torsion spring (93) is connected between the front and rear sides of the lower part of the second nozzle (73) and the sliding frame (74). The torsion springs (93) are all wound around the sliding frame (74). A wedge-shaped squeezing block (91) is evenly connected to the top of the rotating part (5) along the circumferential direction. The wedge-shaped squeezing block (91) is squeezed and engaged with the second nozzle (73).

4. A differential housing rust prevention treatment device according to claim 3, characterized in that: It also includes a drag reduction mechanism (10) for reducing drag when the differential housing rotates. The drag reduction mechanism (10) includes a drag reduction ring (101) and balls (102). The lower part of the sleeve (63) is rotatably connected to the drag reduction ring (101). The ball (102) is uniformly rotatably connected inside the drag reduction ring (101) along the circumferential direction. The balls (102) are all located between the drag reduction ring (101) and the sleeve (63).

5. A differential housing rust prevention treatment device according to claim 4, characterized in that: It also includes a coating block (11) for applying anti-rust oil to the upper part of the differential housing, and the coating block (11) is evenly connected along the circumferential direction on the outer wall of the sleeve (63).

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