Scrap iron removing device for inner cavity of axle housing

Abstract

The invention relates to an axle housing inner cavity scrap iron removing device, and belongs to the technical field of axle machining. The device comprises a rack, the rack is provided with a workbench capable of moving back and forth, the workbench is provided with a positioning seat capable of being in sealing fit with an axle housing lute hole, the positioning seat is provided with a polishing device capable of rotating along a flange of a machining surface of the axle housing lute hole and an air suction port communicated with an inner cavity of the axle housing, and the air suction port is communicated with an external air suction device through a pipeline; the left side and the right side of the workbench are each provided with a clamping and blowing mechanism used for clamping an axle housing, abutting and positioning the end of the axle housing and supplying air to an inner cavity of the axle housing. A knocking vibration mechanism acting on the axle housing is arranged above the workbench. Scrap iron in gaps of an inner cavity of the axle housing is vibrated out through vibration, the scrap iron in the inner cavity of the axle housing is removed in a negative pressure suction mode, meanwhile, burrs and flashes on a machining face can be removed, the machining quality can be improved on the whole, the working environment can be improved, and the labor intensity can be reduced.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle axle processing, and in particular to a device for removing iron chips from an inner cavity of a bridge housing. Background Art

[0002] As a pillar industry, the automobile industry requires related parts to be mass-produced in various places. The housing of the rear axle of the automobile drive is generally made of steel parts pressed and welded to form a certain cavity for assembling corresponding motion actuators, such as half shafts, reducers, differentials, etc. Therefore, the axle housing needs to be machined to meet the requirements of precision assembly.

[0003] Since the bridge housing is a semi-closed tubular structure, a large amount of iron filings generated during processing cannot be removed and are retained in dead corners and other inner cavity locations, making them difficult to clean and remove. After the uncleaned bridge housing is installed on the vehicle, the iron filings and other foreign objects will be shaken out as the car moves, and enter the oil circuit or transmission device, such as lubrication pipelines and gears, thereby causing abnormal noises, wear and other quality problems that affect the use of the car.

[0004] It has been proven that conventional vibration chip removal and ultrasonic cleaning have limited effect on removing iron chips. Air shovels, electric hammers, etc. are effective in removing iron chips by directly hitting the rear axle housing, but they have high requirements for the shape or positioning of the rear axle housing. If the chips are simply removed by direct hitting, the shape or positioning of the rear axle housing product will change greatly. When the difference changes greatly, it is difficult to meet the assembly requirements, which will cause product failure.

[0005] After searching, it was found that in the prior art, a device for removing iron filings from the inner cavity of the rear axle housing is disclosed as CN103894375A, which includes a support frame, a positioning mechanism, a striking cylinder and an electrical control system. The positioning mechanism is fixedly connected to the support frame; relative to the center of the positioning mechanism, a pair of positioning nylon blocks are symmetrically provided on the positioning mechanism and are slidably connected therebetween, and a pair of striking cylinders are symmetrically provided on the support frame; the space corresponding to the pair of positioning nylon blocks and the rear axle housing is the positioning space, and the space corresponding to the striking cylinder and the rear axle housing is the striking space. Due to the use of the impact cylinder, the applicable scope of the knocking can be significantly improved, that is, effective knocking can be achieved within its stroke range. However, this solution still has certain disadvantages: the axle housing is a semi-enclosed tubular structure, and the iron filings that are shaken off are affected by the tubular structure of the axle housing and cannot be discharged smoothly. They will still be retained in the inner cavity positions such as dead corners, and the conventional dumping method is time-consuming and laborious, and the iron filings cannot be cleaned and discharged. In addition, there are some burrs and flashes in the processing of the bridge housing's pipa holes, which will also affect the normal assembly of the product. Summary of the invention

[0006] In order to address the deficiencies in the prior art, the present invention provides a device for removing iron chips from the inner cavity of a bridge housing, which utilizes vibration to shake out the iron chips in the gap of the inner cavity of the bridge housing, and utilizes negative pressure suction to remove the iron chips in the inner cavity of the bridge housing. At the same time, burrs and flash on the machined surface can also be removed, thereby improving the quality and efficiency of iron chip removal and reducing manual labor intensity.

[0007] It adopts the following technical solutions: A device for removing iron chips from the inner cavity of a bridge housing comprises a frame, a workbench which can be moved forward and backward is provided on the frame, a positioning seat which can be sealed with the bridge housing lute hole is provided on the workbench, a grinding device which can rotate along the flange of the bridge housing lute hole processing surface and an air intake port connected with the inner cavity of the bridge housing is provided on the positioning seat, and the air intake port is connected with an external air intake device through a pipeline; clamping and blowing mechanisms for clamping the bridge housing, for pressing and positioning the end of the bridge housing and for supplying air to the inner cavity of the bridge housing are respectively provided on the left and right sides of the workbench; a knocking and vibration mechanism acting on the bridge housing is provided above the workbench.

[0008] Furthermore, the clamping and blowing mechanism comprises a slide plate movable along the length direction of the bridge housing, and the slide plate is provided with a clamping device and a blowing and supplying air positioning device in sequence from the inside to the outside; The blowing air supply positioning device includes a telescopic blowing cylinder connected to a slide plate, the telescopic rod of the telescopic blowing cylinder is provided with a through hole extending through the telescopic rod along its axial direction, a back pressure valve is provided at the through hole at the end of the telescopic rod located on the inner side of the telescopic blowing cylinder, and a positioning ball shell is provided at the end of the telescopic rod located on the outer side of the telescopic blowing cylinder for positioning and cooperating with the bridge housing port, and the positioning ball shell is provided with a blowing hole connected to the through hole.

[0009] Furthermore, the clamping device comprises a finger cylinder, and a pair of V-shaped blocks are respectively provided on two working ends of the finger cylinder, and the two V-shaped blocks are arranged opposite to each other up and down.

[0010] Further, the knocking and vibration mechanism includes a high-frequency vibration device and upper knocking devices located on both sides of the high-frequency vibration device; The high-frequency vibration device comprises a cylinder fixing seat fixed to a frame, a vibrator cylinder which can be telescoped downward is connected to the cylinder fixing seat, a high-frequency vibrator is fixedly connected to the telescopic end of the vibrator cylinder, and a vibration plate is connected to the vibration end of the high-frequency vibrator.

[0011] Furthermore, the upper striking device includes a transverse plate movable along the length direction of the bridge housing, on which a downwardly telescopic descending cylinder is provided, the telescopic end of the downward cylinder is connected to an air hammer fixing seat, and the air hammer fixing seat is connected to an upper air hammer acting downward.

[0012] Furthermore, the positioning seat includes a supporting ring and a bearing body connected to the upper side of the supporting ring, the bearing body includes a fixedly arranged sleeve and a turntable connected for coaxial rotation, the center of the turntable has a downward hollow rotating shaft, and the driving structure drives the hollow rotating shaft to drive the turntable to rotate; The air inlet is located on the vertical side surface of the sleeve, and the support ring is provided with an elastic sealing ring which can be fitted and sealed with the plane where the bridge housing lute hole is located; The grinding device comprises an adjusting cylinder connected to a rotating disk, a connecting plate is fixedly connected to the telescopic end of the adjusting cylinder, and an angle grinder is arranged on the connecting plate.

[0013] Furthermore, elastic support mechanisms are provided on both sides of the workbench and are located on the bottom side of the bridge housing. The elastic support mechanisms include a guide seat and a telescopic cylinder located on one side of the guide seat. The telescopic end of the telescopic cylinder is connected to a bevel block. The guide seat has a through hole that can pass through the bevel block and a vertical guide hole that is perpendicular to and connected to the through hole. A lifting block is slidably arranged in the guide hole. The bottom of the lifting block has an inclined surface that matches the inclined surface of the bevel block. A soft pad block is fixedly connected to the top of the lifting block.

[0014] Furthermore, lower air hammers are provided on both sides of the workbench and located at the bottom side of the bridge housing, and the action direction of the lower air hammers is set upward.

[0015] Furthermore, a shock-absorbing pad is provided on the cylinder body at the telescopic end side of the telescopic blowing cylinder.

[0016] Furthermore, the frame is also provided with a sound insulation cover, and sound insulation cotton is arranged in the sound insulation cover.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The present invention uses the vibration effect of the knocking vibration mechanism to shake out the iron filings in the gap of the inner cavity of the bridge shell, and uses the blowing and suction method of the air supply positioning device and the suction device to remove the iron filings in the inner cavity of the bridge shell. At the same time, the burrs and flash on the machined surface are removed by the grinding device; full automatic control can be achieved through the control system, and the vibration position and vibration time are programmable. For different types of bridge shells, the vibration position and time can be controlled by programming to realize fast and automatic removal of iron filings, thereby improving the processing quality, improving the working environment and reducing the labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an iron chip removal device for the inner cavity of a bridge housing according to an embodiment of the present invention; Figure 2 1 is a schematic diagram of the partial cross-sectional structure of the positioning seat and the structure of the grinding device in an embodiment of the present invention; Figure 3 is a structural schematic diagram of a clamping and blowing mechanism in an embodiment of the present invention; Figure 4is a schematic structural diagram of a high frequency vibration device in an embodiment of the present invention; Figure 5 is a schematic structural diagram of an upper striking device in an embodiment of the present invention; Figure 6 is a schematic structural diagram of an upper elastic support mechanism in an embodiment of the present invention; Figure 7 It is a schematic diagram of the partial cross-sectional structure of the upper elastic support mechanism in an embodiment of the present invention.

[0019] Explanation of reference numerals: 100, frame; 101, horizontal support surface; 102, vertical support surface; 103, soundproof cover; 200, workbench; 210, positioning seat; 211, supporting ring; 212, carrier; 212a, sleeve seat; 212b, turntable; 212c, hollow rotating shaft; 212d, rotating hole; 213, elastic sealing ring; 220, grinding device; 221, adjusting cylinder; 222, connecting plate; 223, angle grinder; 224, wire brush disc; 230, air intake port; 240, air intake device; 300, clamping and blowing mechanism; 301, slide plate; 310, clamping device; 311, finger cylinder; 312, V-block; 320, blowing and air supply positioning device; 321, telescopic blowing cylinder; 322, telescopic rod; 323, through hole; 324, back pressure valve; 324a, steel ball; 324b, spring; 325, positioning ball shell; 326, blowing hole; 327, shock pad; 400, knocking vibration mechanism; 401, lower air hammer; 410, high-frequency vibration device; 411, cylinder fixing seat; 412, vibrator cylinder; 413, high-frequency vibrator; 414, vibration plate; 420, upper knocking device; 421, transverse plate; 422, downward cylinder; 423, air hammer fixing seat; 424, upper air hammer; 500, elastic support mechanism; 501, guide seat; 502, telescopic cylinder; 503, oblique wedge block; 504, through hole; 505, guide hole; 506, lifting block; 507, cushion block; 900, bridge housing; 901, bridge housing pipa hole. DETAILED DESCRIPTION

[0020] In order to make the present invention more clear, a device for removing iron chips from the inner cavity of a bridge housing of the present invention is further described below in conjunction with the accompanying drawings. The specific embodiments described here are only used to explain the present invention and are not used to limit the present invention.

[0021] like Figure 1 , Figure 2As shown, a device for removing iron chips from the inner cavity of a bridge housing includes a frame 100 formed by welding steel plates and profiles, and the frame 100 has a horizontal support surface 101 and a vertical support surface 102. A workbench 200 that can move forward and backward is provided on the horizontal support surface 101, and the workbench 200 can realize its forward and backward reciprocating movement through a linear reciprocating mechanism and a linear slide rail. A positioning seat 210 that can be sealed with the bridge housing lute hole 901 is provided on the workbench 200, and a grinding device 220 that can rotate along the flange of the processing surface of the bridge housing lute hole 901 and an air intake port 230 connected to the inner cavity of the bridge housing 900 are provided on the positioning seat 210. The air intake port 230 is connected to an external air intake device 240 through a pipe. The air intake device 240 can be an industrial vacuum cleaner. The left and right sides of the workbench 200 are respectively provided with a clamping and blowing mechanism 300 for clamping the axle housing 900, for pressing and positioning the end of the axle housing 900, and for supplying air to the inner cavity of the axle housing. A knocking and vibration mechanism 400 acting on the axle housing is provided above the workbench 200. A soundproof cover 103 is also provided on the frame 100, and the soundproof cover 103 covers the above-mentioned mechanisms to play a protective and soundproof role. Of course, in order to improve the soundproof effect, a layer of soundproof cotton (not shown in the figure) is also attached to the soundproof cover 103.

[0022] The positioning seat 210 includes a positioning support ring 211 and a carrier 212 coaxially connected to the upper side of the support ring 211. The carrier 212 is in the shape of a circular cap with a closed top. It is composed of a fixed sleeve 212a and a coaxially rotatable turntable 212b. The center of the turntable 212b has a downward hollow rotating shaft 212c. The center of the sleeve 212a has a vertically arranged sleeve, and the center of the sleeve has a rotating hole 212d. The rotating hole 212d is connected to the hollow rotating shaft 212c through a bearing. The lower end of the hollow rotating shaft 212c is connected to a driving structure. According to design requirements, the driving structure can be directly connected to the motor or through a transmission wheel, a belt, etc. to achieve driving force transmission, thereby driving the turntable 212b to rotate. The hollow rotating shaft 212c can provide a penetration path for the trachea and the wires. The air inlet 230 is located on the peripheral side of the sleeve 212a. In this embodiment, considering the convenience of processing, the sleeve 212a can also be a split part.

[0023] The positioning support ring 211 is used to support and position the bridge housing lute hole 901, and its positioning can be achieved by the cooperation of the circular protruding stop and the opening of the bridge housing lute hole 901. A mounting ring groove is provided on the surface of the positioning support ring 211, and an elastic sealing ring 213 is provided in the annular ring groove. The elastic sealing ring 213 is elastically fitted and squeezed with the plane where the bridge housing lute hole 901 is located to achieve sealing at the bridge housing lute hole 901.

[0024] The grinding device 220 includes an adjusting cylinder 221 fixedly connected to the top of the turntable 212b, and a connecting plate 222 is fixedly connected to the telescopic end of the adjusting cylinder 221. The connecting plate 222 can be formed by a bending process so that it is located directly above the adjusting cylinder 221. An angle grinder 223 is connected to the connecting plate 222, and a wire brush disc 224 is installed at the rotating end of the angle grinder 223. When the motor drives the turntable 212b to rotate, the angle grinder 223 also rotates at the same time, and the wire brush disc 224 also revolves while rotating, thereby achieving the grinding of the burrs on the machined surface of the inner cavity of the bridge housing. Here, the adjusting cylinder 221 can change the rotation radius of the grinding point of the angle grinder to improve its applicability.

[0025] Combination Figure 3 As shown, the clamping and blowing mechanism 300 includes a slide plate 301 that can move along the length direction of the bridge housing. The slide plate 301 is connected to the vertical support surface 102 and realizes its reciprocating movement through a linear reciprocating mechanism and a linear slide rail. The slide plate 301 is provided with a clamping device 310 and a blowing and supplying air positioning device 320 from the inside to the outside.

[0026] The clamping device 310 includes a vertically arranged finger cylinder 311. The finger cylinder 311 is a standard part and has two working clamping ends. A V-shaped block 312 is fixedly connected to each working clamping end. The two V-shaped blocks 312 are arranged up and down and the notches are opposite. When the finger cylinder 311 is working, the two V-shaped blocks 312 can open and close relative to each other to clamp the sleeve area of ​​the bridge housing 900.

[0027] The blowing air positioning device 320 includes a telescopic blowing cylinder 321 connected to the slide plate 301. The telescopic blowing cylinder 321 is different from a conventional cylinder in that a through hole 323 is provided on its telescopic rod 322 which passes through it along its axial direction, and a back pressure valve 324 is provided at the through hole 323 at the end of the telescopic rod 322 located on the inner side of the telescopic blowing cylinder 321. As a conventional technology, the back pressure valve 324 includes a steel ball 324a and a spring 324b, that is, the through hole 323 at the end of the telescopic rod 322 has a certain accommodating cavity for limiting the steel ball 324a and the spring 324b, and at the same time, the spring 324b elastically presses on the steel ball 324a to close the side end of the through hole 323. A positioning ball shell 325 is provided at the end of the telescopic rod 322 located on the outside of the telescopic blowing cylinder 321. The positioning ball shell 325 is provided with a blowing hole 326 connected to the through hole 323. At the same time, the positioning ball shell 325 can also be positioned and matched at the port of the bridge shell 900, so that the air flow enters the bridge shell through the blowing hole 326. Here, there are multiple blowing holes 326, all of which are opened along the radial direction. In this way, when the gas passes through the blowing holes 326, a fan-shaped airflow can be formed, which can effectively form a uniform air pressure around the inner cavity of the bridge shell, so that the iron filings are concentrated in the middle of the inner cavity, which is convenient for subsequent discharge.

[0028] When the air intake pressure in the telescopic air blowing cylinder 321 is greater than the elastic resistance pressure of the spring 324b, the through hole 323 is open, otherwise it is closed, and the telescopic air blowing cylinder 321 can drive the telescopic rod 322 to extend. Of course, the appropriate preload force of the spring 324b can also be selected to achieve synchronous operation of blowing and advancing of the telescopic rod 322. The structure of the telescopic air blowing cylinder 321 can be integrated to realize the functions of blowing into the axle housing and floating positioning of the axle housing.

[0029] In addition, in order to reduce the impact that may occur when the telescopic rod 322 retracts and effectively protect the telescopic blowing cylinder 321, a shock-absorbing pad 327 is also provided on the cylinder body of the telescopic end side of the telescopic blowing cylinder 321. The shock-absorbing pad 327 is preferably made of polyurethane.

[0030] The knocking vibration mechanism 400 includes a high-frequency vibration device 410 and upper knocking devices 420 located on both sides of the high-frequency vibration device 410 .

[0031] Combination Figure 4 As shown, the high-frequency vibration device 410 includes a cylinder fixing seat 411 fixed to the vertical support surface 102 of the frame 100. The cylinder fixing seat 411 is an inverted L-shaped external suspension structure, and its upper end surface is connected to a vibrator cylinder 412 that can be telescoped downward. The telescopic end of the vibrator cylinder 412 is fixedly connected to a high-frequency vibrator 413, and the vibration end of the high-frequency vibrator 413 is connected to a vibration plate 414. The vibration plate 414 is T-shaped as a whole, and its lower end is a plane to improve its overall strength and rigidity. The entire high-frequency vibration device 410 is set in the middle of the bridge housing, mainly to perform high-frequency vibration on the rear oil cover area where the product strength is weak, and vibrate the residual iron filings at the joint between the rear oil cover and the body.

[0032] Combination Figure 5 As shown, the upper knocking device 420 includes a transverse plate 421 that can move along the length direction of the bridge housing. The transverse plate 421 is directly or indirectly connected to the vertical support surface 102 of the frame 100 through a linear slide rail, and is driven by a linear reciprocating mechanism to realize its reciprocating function. A downwardly telescopic descending cylinder 422 is connected to the transverse plate 421 through a bracket, and a tripod-type air hammer fixing seat 423 is connected to the telescopic end of the downward cylinder 422, and an upper air hammer 424 that acts downward is connected to the air hammer fixing seat 423. By controlling the movement of the transverse plate 421 to move the upper air hammer 424 to a suitable area, and then controlling the upper air hammer 424 to work, different parts of the product can be knocked under program control, and the knocking frequency and impact force can be adjusted for different bridge types.

[0033] Furthermore, combined with Figure 1As shown, a lower air hammer 401 is provided on the horizontal support surface 101 on both sides of the workbench 200 and is located at the bottom of the axle housing. The action direction of the lower air hammer 401 is set upward. The lower air hammer is fixed and mainly performs key tapping on the welds and machined areas of the product's lute hole, which can achieve the purpose of rust removal by high-frequency vibration of the axle housing. The rust removal effect of the axle housing can be further improved by combining the tapping vibration mechanism 400.

[0034] Combination Figure 6 , Figure 7 As shown, the horizontal support surfaces 101 on both sides of the workbench 200 are also provided with an elastic support mechanism 500 located at the bottom side of the bridge housing. The elastic support mechanism 500 includes a guide seat 501 and a telescopic cylinder 502 located at one side of the guide seat 501. The telescopic end of the telescopic cylinder 502 is connected to an inclined wedge block 503. The guide seat 501 has a through hole 504 that can pass through the inclined wedge block 503 and a vertical guide hole 505 that is perpendicular to and communicates with the through hole 504. The through hole 504 is arranged in the horizontal direction. A lifting block 506 is slidably provided in the guide hole 505. The bottom of the lifting block 506 has an inclined surface that matches the inclined surface of the inclined wedge block 503. The top of the lifting block 506 is fixedly connected to a cushion block 507. When the telescopic cylinder 502 extends the rod, the inclined surface of the inclined wedge block 503 contacts the inclined surface of the lifting block 506, causing the lifting block 506 to move upward, thereby driving the soft cushion block 507 to elastically support the bottom of the bridge shell, further providing elastic support, while ensuring stable support of the bridge shell, reducing the adverse effects of vibration on the frame.

[0035] It should be noted that the linear reciprocating mechanism mentioned in this embodiment can adopt conventional structures such as oil cylinders, electric cylinders, pneumatic cylinders or motor-driven nut screw mechanisms. Considering the beat requirements of production work, pneumatic cylinders or electric cylinders are preferred. In some occasions with stroke control, electric cylinders or motor-driven nut screw mechanisms can be used to meet the requirements of precise movement control. All the above-mentioned mechanisms are controlled by a control system and use programs to realize automated operations. As a conventional control system, it will not be described here.

[0036] Working process of this device: First, the bridge shell is transported to the forward extended workbench 200, with the bridge shell hole facing downward and positioned in the positioning seat 210; then the workbench 200 together with the bridge shell is moved backward to the working position; the clamping and blowing mechanism 300 works, the clamping device 310 clamps the sleeves on both sides of the bridge shell in a centering manner, and the blowing and supplying positioning device 320 clamps the two ends of the bridge shell in a floating position; then, the knocking and vibration mechanism 400 is started to vibrate different positions of the outer surface of the bridge shell, and at the same time, the grinding device 220 removes the burrs on the machined part, and the suction device 240 is started synchronously to form a negative pressure in the inner cavity; in the later stage of the vibration process, the blowing and supplying positioning device 320 provides a high-pressure airflow to the inner cavity of the bridge shell, and combined with the action of the suction device 240, the iron filings in the inner cavity of the bridge shell are instantly sucked away.

[0037] The device operation process described here is merely an illustrative example and is not intended to be limiting.

[0038] During the above-mentioned use, vibration is utilized to shake out the iron filings in the gap of the inner cavity of the bridge shell, and negative pressure suction is utilized to remove the iron filings in the inner cavity of the bridge shell. At the same time, burrs and flash on the machined surface can also be removed. Fully automatic control can be achieved through the control system, and the vibration position and vibration time are programmable. For different types of bridge shells, the vibration position and time can be controlled by programming to achieve rapid and automatic removal of iron filings, thereby improving processing quality, improving the working environment and reducing labor intensity.

[0039] The above embodiments of the present invention are merely examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. However, these obvious changes or modifications derived from the essential spirit of the present invention still fall within the protection scope of the present invention.

Claims

1. A device for removing iron chips from the inner cavity of a bridge housing, comprising a frame (100), characterized in that: The frame (100) is provided with a workbench (200) that can move forward and backward, the workbench (200) is provided with a positioning seat (210) that can be sealed with the bridge housing lute hole (901), the positioning seat (210) is provided with a grinding device (220) that can rotate along the flange of the processing surface of the bridge housing lute hole (901) and an air intake port (230) that is connected to the inner cavity of the bridge housing, and the air intake port (230) is connected to an external air intake device (240) through a pipeline; the left and right sides of the workbench (200) are respectively provided with a clamping and blowing mechanism (300) for clamping the bridge housing, for pressing and positioning the end of the bridge housing, and for supplying air to the inner cavity of the bridge housing; and a knocking and vibration mechanism (400) that acts on the bridge housing is provided above the workbench (200).

2. The iron chip removal device for the inner cavity of the bridge housing according to claim 1, characterized in that: The clamping and blowing mechanism (300) comprises a slide plate (301) movable along the length direction of the bridge housing, and the slide plate (301) is provided with a clamping device (310) and a blowing and supplying air positioning device (320) in sequence from the inside to the outside; The blowing air supply positioning device (320) comprises a telescopic blowing cylinder (321) connected to the slide plate (301); a through hole (323) penetrating along the axial direction of the telescopic rod (322) of the telescopic blowing cylinder (321); a back pressure valve (324) is provided at the through hole (323) at the end of the telescopic rod (322) located inside the telescopic blowing cylinder (321); a positioning ball shell (325) for positioning and matching the bridge housing port is provided at the end of the telescopic rod (322) located outside the telescopic blowing cylinder (321); and a blowing hole (326) connected to the through hole (323) is provided on the positioning ball shell (325).

3. The iron chip removal device for the inner cavity of the bridge housing according to claim 2, characterized in that: The clamping device (310) comprises a finger cylinder (311), and a pair of V-shaped blocks (312) are respectively provided on two working ends of the finger cylinder (311), and the two V-shaped blocks (312) are arranged opposite to each other up and down.

4. The iron chip removal device for the inner cavity of the bridge housing according to claim 1, characterized in that: The knocking and vibration mechanism (400) comprises a high-frequency vibration device (410) and upper knocking devices (420) located on both sides of the high-frequency vibration device (410); The high-frequency vibration device (410) comprises a cylinder fixing seat (411) fixed to the frame (100); a vibrator cylinder (412) that can be extended downward is connected to the cylinder fixing seat (411); a high-frequency vibrator (413) is fixedly connected to the extension end of the vibrator cylinder (412); and a vibration plate (414) is connected to the vibration end of the high-frequency vibrator (413).

5. The iron chip removal device for the inner cavity of the bridge housing according to claim 4, characterized in that: The upper striking device (420) comprises a transverse plate (421) movable along the length direction of the bridge housing, a downwardly telescopic descending cylinder (422) being provided on the transverse plate (421), an air hammer fixing seat (423) being connected to the telescopic end of the downward cylinder (422), and an upper air hammer (424) acting downwardly being connected to the air hammer fixing seat (423).

6. The iron chip removal device for the inner cavity of the bridge housing according to claim 1, characterized in that: The positioning seat (210) comprises a supporting ring (211) and a carrier (212) connected to the upper side of the supporting ring (211); the carrier (212) comprises a fixed sleeve (212a) and a rotating disk (212b) connected coaxially; a hollow rotating shaft (212c) pointing downward is provided at the center of the rotating disk (212b); a driving structure drives the hollow rotating shaft (212c) to drive the rotating disk (212b) to rotate; The air inlet (230) is located on the vertical side surface of the sleeve (212a), and the support ring (211) is provided with an elastic sealing ring (213) that can fit and seal with the plane where the bridge housing lute hole (901) is located; The grinding device (220) comprises an adjusting cylinder (221) connected to a rotating disk (212b), a connecting plate (222) being fixedly connected to the telescopic end of the adjusting cylinder (221), and an angle grinder (223) being provided on the connecting plate (222).

7. The iron chip removal device for the inner cavity of the bridge housing according to claim 1, characterized in that: The workbench (200) is also provided with elastic support mechanisms (500) located at the bottom of the bridge housing on both sides. The elastic support mechanisms (500) include a guide seat (501) and a telescopic cylinder (502) located at one side of the guide seat (501). The telescopic end of the telescopic cylinder is connected to an inclined wedge block (503). The guide seat (501) has a through hole (504) that can pass through the inclined wedge block (503) and a vertical guide hole (505) that is perpendicular to and communicates with the through hole (504). A lifting block (506) is slidably provided in the guide hole (505). The bottom of the lifting block (506) has an inclined surface that matches the inclined surface of the inclined wedge block (503). The top of the lifting block (506) is fixedly connected to a soft cushion block (507).

8. The iron chip removal device for the inner cavity of the bridge housing according to claim 1, characterized in that: Lower air hammers (401) are also provided on both sides of the workbench (200) and are located at the bottom side of the axle housing. The action direction of the lower air hammers (401) is arranged upward.

9. The iron chip removal device for the inner cavity of the bridge housing according to claim 2, characterized in that: A shock-absorbing pad (327) is also provided on the cylinder body at the telescopic end side of the telescopic blowing cylinder (321).

10. The iron chip removal device for the inner cavity of the bridge housing according to claim 1, characterized in that: The frame (100) is also provided with a sound insulation cover (103), and the sound insulation cover (103) is provided with sound insulation cotton.

Images