阅读说明：本技术 限位式可升降车桥 (Spacing type liftable axle ) 是由 陈学福 何必强 何灿华 于 2021-10-11 设计创作，主要内容包括：本发明涉及一种限位式可升降车桥,包括车桥本体,所述车桥本体的两端各设有一个悬挂,所述悬挂包括车架支撑座和液压缸,所述车架支撑座的一端同竖悬挂杆的上端连接在一起、另一端设置有同车桥本体配合的位于车桥本体上方的上限位块,所述竖悬挂杆的中部通过转动轴同连接杆的一端连接在一起,所述连接杆的另一端同车桥本体固接在一起,所述竖悬挂杆的下端设有同连接杆配合的位于连接杆下方的下限位块,所述液压缸的一端同车架支撑座或车架支撑座竖悬挂杆的上端铰接在一起、另一端同连接杆铰接在一起。本发明旨在提供一种行程可控的限位式可升降车桥,解决了现有的升降车桥升升降范围不能够机械控制的问题。(The invention relates to a limiting type liftable axle, which comprises an axle body, wherein two ends of the axle body are respectively provided with a suspension, each suspension comprises a frame supporting seat and a hydraulic cylinder, one end of each frame supporting seat is connected with the upper end of a vertical suspension rod, the other end of each frame supporting seat is provided with an upper limiting block which is matched with the axle body and is positioned above the axle body, the middle part of each vertical suspension rod is connected with one end of a connecting rod through a rotating shaft, the other end of each connecting rod is fixedly connected with the axle body, the lower end of each vertical suspension rod is provided with a lower limiting block which is matched with the connecting rod and is positioned below the connecting rod, one end of each hydraulic cylinder is hinged with the frame supporting seat or the upper end of the vertical suspension rod of the frame supporting seat, and the other end of each hydraulic cylinder is hinged with the connecting rod. The invention aims to provide a limit type liftable axle with a controllable stroke, and solves the problem that the lifting range of the conventional liftable axle cannot be mechanically controlled.)

1. The utility model provides a spacing formula liftable axle, includes the axle body, the both ends of axle body respectively are equipped with one and hang, its characterized in that, it includes frame supporting seat and pneumatic cylinder to hang, the one end of frame supporting seat links together with the upper end that hangs the pole on the perpendicular, and the other end is provided with the upper limit piece that lies in axle body top with axle body complex, the perpendicular middle part that hangs the pole links together through the axis of rotation with the one end of connecting rod, the other end of connecting rod is in the same place with axle body rigid coupling, the lower extreme that hangs the pole on the perpendicular is equipped with the lower limit piece that lies in the connecting rod below with the connecting rod complex, the one end of pneumatic cylinder is in the same place with frame supporting seat or the articulated upper end that hangs the pole of frame supporting seat vertical, and the other end is in the same place with the connecting rod articulated.

2. The limit type liftable axle according to claim 1, wherein a sliding hole is formed in the vertical suspension rod, the lower limit block is arranged in the sliding hole in a penetrating manner, and a buffer spring for supporting the lower limit block is arranged in the sliding hole.

3. The vehicle axle of claim 1 or 2, wherein the lower and upper limit blocks are provided with cushion pads.

4. The spacing type liftable axle according to claim 1, further comprising an axle body surface decontamination mechanism, wherein the axle body is cylindrical, the axle body surface decontamination mechanism comprises a receiving groove sleeved below the axle body, an arc-shaped dust removal knife arranged in the receiving groove and used for cutting foreign matters on the lower surface of the axle body, the arc-shaped dust removal knife is arranged in the receiving groove and extends along the circumferential direction of the axle body, an arc-shaped cleaning cloth arranged in the receiving groove and used for wiping the lower surface of the axle body and extends along the circumferential direction of the axle body, and a receiving groove driving mechanism used for driving the receiving groove to move along the extending direction of the axle body, the annular cleaning cloth is connected with the receiving groove through an arc-shaped flexible sealing bag extending along the circumferential direction of the axle body, a gap between the cutting edge of the arc-shaped dust removal knife and the axle body is larger than zero and less than 0.5 mm, and the arc-shaped cleaning cloth is abutted with the axle body when fluid is filled in the arc-shaped flexible sealing bag, when the arc-shaped flexible sealing bag is shrunken, the arc-shaped cleaning cloth is disconnected with the axle body, the central angle corresponding to the wrapping part of the axle body by the receiving groove is more than 190 degrees, the central angle of the arc where the arc-shaped cleaning knife is located is more than 180 degrees, and the central angle of the arc where the annular cleaning cloth is located is more than 180 degrees.

5. The limit type liftable axle according to claim 4, wherein the cutting edges of the arc-shaped dust removing knife comprise a first cutting edge and a second cutting edge, the included angles between the plane where the first cutting edge is located and the axis of the axle body and between the plane where the second cutting edge is located and the axis of the axle body are acute angles, and the orientation of the first cutting edge and the orientation of the second cutting edge are distributed on two sides of a vertical plane.

6. The limit type liftable axle according to claim 4 or 5, further comprising a material pumping pump, wherein the receiving groove is provided with a material outlet, the inlet end of the material pumping pump is butted with the material outlet, the outlet end of the material pumping pump is connected with a dust collecting bag, and a plurality of fan blades for driving the rotating shaft to rotate so as to enable the material pumping pump to work are arranged on the rotating shaft of the material pumping pump; when the wind generated when the automobile provided with the limiting type liftable axle moves forwards drives the fan blades to rotate, the rotating direction of the fan blade driving rotating shaft is in a direction that the inlet end of the pumping pump generates negative pressure; the material pumping pump is connected with the receiving tank.

7. The spacing type liftable axle according to claim 4 or 5, wherein the receiving groove driving mechanism comprises a guide rod, a lead screw parallel to the guide rod, a lead screw driving mechanism for driving the lead screw to rotate forward and backward, and a driving block arranged on the receiving groove, two ends of the guide rod are fixed with the axle body, two ends of the lead screw are rotatably connected with the axle body, the lead screw, the guide rod and the axle body are parallel, the lead screw driving mechanism comprises a driving sleeve which is arranged on a hub and is coaxial with the hub and is provided with an inner gear ring and an outer gear ring, an outer gear which is meshed with the outer gear ring, an inner gear which is meshed with the inner gear ring, a first intermediate gear which is rotatably connected with the axle body, a second intermediate gear which is meshed with the first intermediate gear, a lead screw driving gear which is meshed with the second intermediate gear and is connected with the lead screw, a lead screw driving gear which is connected with the lead screw, The first clutch connects the rotating shaft of the external gear and the rotating shaft of the first intermediate gear together, the second clutch is disconnected when the first clutch is closed, and the internal gear and the external gear are connected with the axle body together; the guide rod is arranged in the driving block in a penetrating way, and the screw rod is connected in the driving rod in a threaded way.

8. The vehicle axle of claim 8, wherein the vehicle axle body has a first direction switch at one end and a second direction switch at the other end, the first clutch is powered on and the second clutch is powered off when the receiving groove is detected by the first direction switch, and the second clutch is powered on and the first clutch is powered off when the receiving groove is detected by the second direction switch.

9. The limit type liftable axle according to claim 4 or 5, wherein a water inlet channel is arranged in the receiving groove, and a plurality of water outlet holes which are distributed along the circumferential direction of the axle body and spray water towards the axle body are arranged on the inner circumferential surface of the receiving groove; the process of decontaminating the axle body is as follows: the receiving groove carries out reciprocating motion along the extending direction of the axle body, in the process, the arc-shaped dust removing knives scrape off foreign matters which are adhered to the lower side surface of the axle body and have the protruding height larger than the requirement, then water flows into the water inlet flow channel and is sprayed out from the water outlet hole to moisten the lower side surface of the axle body, and finally the arc-shaped flexible sealing bags are filled with fluid to bulge the arc-shaped flexible sealing bags, so that the arc-shaped cleaning cloth and the axle body are abutted together to wipe the lower side panel of the axle body.

10. The vehicle axle of claim 8, wherein the inlet of the water inlet channel is connected to the outlet of the cooling water circulating pump of the engine through a water inlet pipe having a first control valve, and the curved flexible sealing bag is connected to the water inlet channel through a second control valve.

Technical Field

The invention relates to an axle, in particular to a limit type liftable axle.

Background

The automobile axle is connected with a frame or a bearing type automobile body through a suspension, wheels are arranged at two ends of the automobile axle, the axle is used for bearing the load of the automobile and maintaining the normal running of the automobile on a road, the axle can be integrated, such as a huge barbell, and the two ends of the axle support the automobile body through a suspension system, so that the integrated axle is usually matched with a non-independent suspension; the axle can also be of a disconnected type, like two umbrellas are inserted at the two sides of the vehicle body, and then the vehicle body is supported by the suspension system respectively, so that the disconnected type axle is matched with the independent suspension. The existing axle is provided with a lifting type device for adjusting the supporting height of the vehicle body.

The existing axle has the following problems: the lifting range can not be limited, and the height of the vehicle body is easily out of range when the lifting mechanism is damaged; when the vehicle travels, pollutants such as mud can be caused to adhere to the lower side surface of the axle (namely, the axle body), and the existing axle can not remove the pollutants, so that the axle is easily polluted and damaged.

Disclosure of Invention

The invention aims to provide a limit type liftable axle with a controllable stroke, and solves the problem that the lifting range of the conventional liftable axle cannot be mechanically controlled.

The second purpose of the invention is to further provide a limit type liftable axle capable of cleaning the lower surface of the axle body, and solve the problem that the axle body is endangered because pollutants adhered to the lower surface of the existing axle cannot be conveniently removed

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a spacing formula liftable axle, includes the axle body, the both ends of axle body respectively are equipped with one and hang, its characterized in that, it includes frame supporting seat and pneumatic cylinder to hang, the one end of frame supporting seat links together with the upper end that hangs the pole on the perpendicular, and the other end is provided with the upper limit piece that lies in axle body top with axle body complex, the perpendicular middle part that hangs the pole links together through the axis of rotation with the one end of connecting rod, the other end of connecting rod is in the same place with axle body rigid coupling, the lower extreme that hangs the pole on the perpendicular is equipped with the lower limit piece that lies in the connecting rod below with the connecting rod complex, the one end of pneumatic cylinder is in the same place with frame supporting seat or the articulated upper end that hangs the pole of frame supporting seat vertical, and the other end is in the same place with the connecting rod articulated. When the vehicle body lifting device is used, the front end and the rear end of the vehicle body are connected to the two workshop supporting seats, the vehicle body is lifted through the connecting rods through the stretching of the hydraulic cylinders, the vehicle body cannot be lifted when the vehicle body is lifted to the upper limiting block and abutted to the vehicle body, and the vehicle body cannot be lifted continuously when the vehicle body is lifted to the lower limiting block and abutted to the connecting rods, so that the mechanical limiting of the lifting range is realized.

Preferably, the vertical suspension rod is provided with a sliding hole, the lower limiting block is arranged in the sliding hole in a penetrating manner, and a buffer spring for supporting the lower limiting block is arranged in the sliding hole. When the automobile ascends to the highest position, the vibration generated when the automobile runs due to the high gravity center of the automobile is large, and the technical scheme can perform cushioning when the automobile is located at the highest position.

Preferably, the lower limiting block and the upper limiting block are both provided with cushion pads. The impact at the time of contact can be reduced.

Preferably, the vehicle axle further comprises a vehicle axle body surface decontamination mechanism, the vehicle axle body is cylindrical, the vehicle axle body surface decontamination mechanism comprises a receiving groove sleeved below the vehicle axle body, an arc-shaped dust removing knife arranged in the receiving groove and extending along the circumferential direction of the vehicle axle body and used for cutting foreign matters on the lower surface of the vehicle axle body, an arc-shaped cleaning cloth arranged in the receiving groove and used for wiping the lower surface of the vehicle axle body and extending along the circumferential direction of the vehicle axle body, and a receiving groove driving mechanism used for driving the receiving groove to move along the extending direction of the vehicle axle body, the annular cleaning cloth is connected with the receiving groove through an arc-shaped flexible sealing bag extending along the circumferential direction of the vehicle axle body, the gap between the cutting edge of the arc-shaped dust removing knife and the vehicle axle body is larger than zero and less than 0.5 mm, and the arc-shaped cleaning cloth is abutted with the vehicle axle body when the fluid drum is filled in the arc-shaped flexible sealing bag, when the arc-shaped flexible sealing bag is shrunken, the arc-shaped cleaning cloth is disconnected with the axle body, the central angle corresponding to the wrapping part of the axle body by the receiving groove is more than 190 degrees, the central angle of the arc where the arc-shaped cleaning knife is located is more than 180 degrees, and the central angle of the arc where the annular cleaning cloth is located is more than 180 degrees. In the use process, the receiving groove is driven by the receiving groove driving mechanism to move left and right (namely the extending direction of the axle body), firstly, pollutants (such as mud) with the protruding height larger than a set value on the lower surface of the axle body are cut down by the arc-shaped dust removing knife and fall into the receiving groove in the moving process, then, the arc-shaped flexible sealing bag is flushed with fluid and is swelled, and the cleaning cloth is enabled to be in contact with the lower surface of the axle body to clean the lower surface of the axle body firstly. The receiving groove is arranged, so that the vehicle can be prevented from generating raised dust during cleaning during running to pollute the environment, and the environmental protection property is good. The second object of the invention is achieved.

Preferably, the cutting edge of the arc-shaped dust removing knife comprises a first cutting edge and a second cutting edge, the included angles between the plane where the first cutting edge is located and the plane where the second cutting edge is located and the axis of the axle body are acute angles, and the orientation of the first cutting edge and the orientation of the second cutting edge are distributed on two sides of a vertical plane. The in-process that removes about receiving groove, two directions can both cut the pollutant and be difficult to lead to the arc dust removal sword to warp.

Preferably, the clearance between both ends of the receiving groove and the axle body is 10 mm or less. The effect that the receiving groove blocks the foreign matters from spilling can be improved.

The dust collector also comprises a material pumping pump, wherein the receiving groove is provided with a discharge hole, the inlet end of the material pumping pump is butted with the discharge hole, the outlet end of the material pumping pump is connected with a dust collecting bag, and a plurality of fan blades for driving the rotating shaft to rotate so as to enable the material pumping pump to work are arranged on the rotating shaft of the material pumping pump; when the wind generated when the automobile provided with the limiting type liftable axle moves forwards drives the fan blades to rotate, the rotating direction of the fan blade driving rotating shaft is in a direction that the inlet end of the pumping pump generates negative pressure; the material pumping pump is connected with the receiving tank. When cleaning is carried out, the vehicle runs, and when the wind generated by the running of the vehicle drives the fan blades to rotate, the rotating direction of the fan blade driving rotating shaft generates negative pressure for the inlet end of the material pumping pump, so that pollutants collected in the receiving groove when the material pumping pump is used for cleaning are pumped out into the dust collecting bag. The garbage products are taken out of the receiving groove.

Preferably, the receiving tank driving mechanism comprises a guide rod, a screw rod parallel to the guide rod, a screw rod driving mechanism for driving the screw rod to rotate forward and backward, and a driving block arranged on the receiving tank, wherein two ends of the guide rod are fixed with the axle body, two ends of the screw rod are rotatably connected with the axle body, the screw rod, the guide rod and the axle body are parallel, the screw rod driving mechanism comprises a driving sleeve which is arranged on a hub and is coaxial with the hub and is provided with an inner gear ring and an outer gear ring, an outer gear which is meshed with the outer gear ring, an inner gear which is meshed with the inner gear ring, a first intermediate gear which is rotatably connected with the axle body, a second intermediate gear which is meshed with the first intermediate gear, a screw rod driving gear which is meshed with the second intermediate gear and is connected with the screw rod, a first clutch and a second clutch which is used for connecting the screw rod with a driving shaft of the inner gear together, the first clutch connects the rotating shaft of the external gear and the rotating shaft of the first intermediate gear together, the second clutch is disconnected when the first clutch is closed, and the internal gear and the external gear are connected together with the axle body. The receiving groove driving mechanism has the advantages that the receiving groove is driven to reset and move through the rotation of the automobile wheels, and a motor is not required to be additionally designed for driving.

Preferably, one end of the axle body is provided with a first reversing switch, the other end of the axle body is provided with a second reversing switch, when the receiving groove is detected by the first reversing switch, the first clutch is electrified, and the second clutch is electrified, and when the receiving groove is detected by the second reversing switch, the first clutch is electrified. The identification and the reversing of the travel end position of the receiving tank during the traveling are realized.

Preferably, a water inlet flow channel is arranged in the receiving groove, and a plurality of water outlet holes which are distributed along the circumferential direction of the axle body and spray water towards the axle body are formed in the inner circumferential surface of the receiving groove; the process of decontaminating the axle body is as follows: the receiving groove carries out reciprocating motion along the extending direction of the axle body, in the process, the arc-shaped dust removing knives scrape off foreign matters which are adhered to the lower side surface of the axle body and have the protruding height larger than the requirement, then water flows into the water inlet flow channel and is sprayed out from the water outlet hole to moisten the lower side surface of the axle body, and finally the arc-shaped flexible sealing bags are filled with fluid to bulge the arc-shaped flexible sealing bags, so that the arc-shaped cleaning cloth and the axle body are abutted together to wipe the lower side panel of the axle body. Can moisten before wiping the axle body, improve clean effect and reduce the damage to the axle surface when clean.

Preferably, the inlet end of the water inlet channel is connected with the outlet end of a cooling water circulating pump of the engine through a water inlet pipe provided with a first control valve, and the arc-shaped flexible sealing bag is communicated with the water inlet channel through a second control valve. In the cleaning process, first control valve is opened, washes at the effect of cooling water circulating pump and makes water spout from the delivery port and carry out the moist to axle body surface, then the second control valve is opened and is made the flexible sealed bag of arc to be played the realization through the arc rag clean by the water drum, and first control valve is closed earlier after clean the completion now, then the rivers in the flexible sealed bag of arc flow and close the second control valve after flat.

The invention also discloses a limiting pipe extending along the extending direction of the axle body, wherein one end of the water inlet pipe is connected with the outlet end of a cooling water circulating pump of an engine, the other end of the water inlet pipe is provided with a telescopic spiral section extending along the extending direction of the axle body, the spiral section is positioned in the limiting pipe, the peripheral surface of the limiting pipe is provided with a sliding opening extending along the extending direction of the limiting pipe, a rigid pipe head is connected in the sliding opening in a sliding manner, one end of the rigid pipe head is connected with the water inlet flow channel, and the other end of the rigid pipe head is connected with one end of the spiral section. When the receiving groove can be moved to cause the water pipe to move, the water pipe can still keep in order.

Preferably, the inner surface of the receiving groove is provided with an arc-shaped bulge along the circumferential direction of the axle body, and the water outlet hole is formed in the arc-shaped bulge. Can prevent the pollutant from falling to cause the water outlet hole to be blocked.

Compared with the prior art, the invention provides a limit type liftable axle, which has the following beneficial effects: through the arrangement of the baffle, the mounting hole and the bolt, impurities such as soil can be prevented from entering the lifting mechanism, the influence of the impurities such as the soil on the lifting mechanism is avoided, and convenience is brought to use of users; can clean the axle body, prevent to splash and play the mud on the axle and adhere on the axle for a long time and damage the axle.

Drawings

FIG. 1 is a schematic structural diagram according to a first embodiment of the present invention;

FIG. 2 is a schematic view of the second embodiment without suspension;

FIG. 3 is an enlarged partial schematic view of FIG. 2;

FIG. 4 is a cross-sectional schematic view of the axle body;

FIG. 5 is a schematic view of the components of the water inlet pipe;

FIG. 6 is a schematic cross-sectional view of the receiving slot;

fig. 7 is a partially enlarged schematic view of fig. 6 at B.

In the figure: the vehicle-bridge dust collection device comprises a vehicle-bridge body 1, a transmission shaft 2, a wheel hub 3, a vehicle frame supporting seat 13, a hydraulic cylinder 4, a vertical suspension rod 5, an upper limiting block 6, a rotating shaft 7, a connecting rod 8, a lower limiting block 9, a sliding hole 10, a buffer spring 11, a buffer cushion 12, a receiving groove 19, an arc-shaped dust removal knife 20, an arc-shaped cleaning cloth 21, an arc-shaped flexible sealing bag 22, a connecting block 23, a first cutting edge 24, a second cutting edge 25, a central angle A corresponding to the wrapping part of the vehicle-bridge body wrapped by the receiving groove, a gap 26, a material pumping pump 27, a material outlet 28, a dust collection bag 29, a fan blade 30, a guide rod 31, a screw rod 32, a driving block 33, an inner gear 34, an outer gear ring 35, a driving sleeve 36, an outer gear 37, an inner gear 38, a first intermediate gear 39, a second intermediate gear 40, a screw rod driving gear 41, a first clutch 42, a second clutch 43, a first reversing switch 44, a second reversing switch 45, a water inlet flow channel 46, Water outlet 47, first control valve 48, water inlet pipe 49, second control valve 50, limiting pipe 51, spiral section 52, sliding opening 53, rigid pipe head 54, arc-shaped protrusion 55 and wheel 56.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

In the first embodiment, referring to fig. 1, a limit type liftable axle comprises an axle body 1, wherein two ends of the axle body are respectively provided with a suspension. The suspension comprises a frame supporting seat 13 and a hydraulic cylinder 4, one end of the frame supporting seat is connected with the upper end of the vertical suspension rod 5, and the other end of the frame supporting seat is provided with an upper limiting block 6 which is matched with the axle body and is positioned above the axle body. The middle part of the vertical suspension rod is connected with one end of a connecting rod 8 through a rotating shaft 7, and the other end of the connecting rod is fixedly connected with the axle body. The lower end of the vertical suspension rod is provided with a lower limiting block 9 which is matched with the connecting rod and is positioned below the connecting rod, one end of the hydraulic cylinder is hinged with the frame supporting seat or the upper end of the vertical suspension rod of the frame supporting seat, and the other end of the hydraulic cylinder is hinged with the connecting rod. The vertical suspension rod is provided with a sliding hole 10, the lower limiting block is arranged in the sliding hole in a penetrating mode, and a buffer spring 11 supporting the lower limiting block is arranged in the sliding hole. The lower and upper limit blocks are provided with cushions 12.

When in use, the axle body is driven to lift through the extension of the hydraulic cylinder.

In the second embodiment, like the second embodiment, the two ends of the axle are connected with the hubs 3 through the transmission shafts 2, and the wheels 56 are connected to the hubs. The difference is that:

referring to fig. 2-7, further comprising an axle body surface decontamination mechanism, the axle body 1 is cylindrical. The axle body surface decontamination mechanism comprises a receiving groove 19, an arc-shaped dust removing knife 20, an arc-shaped cleaning cloth 21 and a receiving groove driving mechanism, wherein the receiving groove 19 is sleeved below the axle body, the arc-shaped dust removing knife 20 is arranged in the receiving groove and extends along the circumferential direction of the axle body and cuts foreign matters on the lower surface of the axle body, the arc-shaped cleaning cloth 21 is arranged in the receiving groove and extends along the circumferential direction of the axle body and wipes the lower surface of the axle body, and the receiving groove driving mechanism drives the receiving groove to move along the extending direction of the axle body. The ring shaped wipe is connected to the receiving groove by an arcuate flexible sealing pocket 22 extending circumferentially around the axle body. The arc-shaped dust removing knife is connected with the receiving groove through a connecting block 23. The cutting edge of the arc-shaped dust removing knife comprises a first cutting edge 24 and a second cutting edge 25, the included angles between the plane where the first cutting edge is located and the plane where the second cutting edge is located and the axis of the axle body are acute angles, and the orientation of the first cutting edge and the orientation of the second cutting edge are distributed on two sides of a vertical plane. The clearance between the cutting edge of the arc-shaped dust removing knife and the axle body is larger than zero and less than 0.5 mm. When the fluid is filled into the arc-shaped flexible sealing bag to be swelled, the arc-shaped rag is abutted with the axle body, when the arc-shaped flexible sealing bag is shrunken, the arc-shaped rag is disconnected with the axle body, the central angle A corresponding to the wrapping part of the axle body by the receiving groove is more than 190 degrees, the central angle of the arc where the arc-shaped dust removing knife is located is more than 180 degrees, and the central angle of the arc where the annular rag is located is more than 180 degrees. The clearance 26 between the ends of the receiving slot and the axle body is less than 10 mm. The invention also comprises a material pumping pump 27, wherein the receiving groove is provided with a discharge hole 28, the inlet end of the material pumping pump is butted with the discharge hole, the outlet end of the material pumping pump is connected with a dust collecting bag 29, and a plurality of fan blades 30 for driving the rotating shaft to rotate so as to enable the material pumping pump to work are arranged on the rotating shaft of the material pumping pump; when the wind generated when the automobile provided with the limiting type liftable axle moves forwards drives the fan blades to rotate, the rotating direction of the fan blade driving rotating shaft is in a direction that the inlet end of the pumping pump generates negative pressure; the material pumping pump is connected with the receiving tank. The receiving groove driving mechanism comprises a guide rod 31, a screw rod 32 parallel to the guide rod, a screw rod driving mechanism for driving the screw rod to rotate positively and negatively and a driving block 33 arranged on the receiving groove. The two ends of the guide rod are fixed together with the axle body and penetrate through the driving block. Two ends of the screw rod are rotatably connected with the axle body and are in threaded connection with the driving block. The lead screw, the guide rod and the axle body are parallel. The screw rod driving mechanism comprises a driving sleeve 36 which is arranged on a hub and is coaxial with the hub and provided with an inner gear ring 34 and an outer gear ring 35, an outer gear 37 meshed with the outer gear ring, an inner gear 38 meshed with the inner gear ring, a first intermediate gear 39 rotationally connected with an axle body, a second intermediate gear 40 meshed with the first intermediate gear, a screw rod driving gear 41 meshed with the second intermediate gear and connected with a screw rod, a first clutch 42 and a second clutch 43 connecting the screw rod with a driving shaft of the inner gear, wherein the first clutch connects a rotating shaft of the outer gear with a rotating shaft of the first intermediate gear, the second clutch is disconnected when the first clutch is closed, and the inner gear and the outer gear are both connected with the axle body. One end of the axle body is provided with a first reversing switch 44, the other end of the axle body is provided with a second reversing switch 45, when the receiving groove is detected by the first reversing switch, the first clutch is electrified, the second clutch is not electrified, and when the receiving groove is detected by the second reversing switch, the second clutch is electrified, and the first clutch is not electrified. A water inlet flow channel 46 is arranged in the receiving groove, and a plurality of water outlet holes 47 which are distributed along the circumferential direction of the axle body and spray water towards the axle body are arranged on the inner circumferential surface of the receiving groove; the process of decontaminating the axle body is as follows: the receiving groove carries out reciprocating motion along the extending direction of the axle body, in the process, the arc-shaped dust removing knives scrape off foreign matters which are adhered to the lower side surface of the axle body and have the protruding height larger than the requirement, then water flows into the water inlet flow channel and is sprayed out from the water outlet hole to moisten the lower side surface of the axle body, and finally the arc-shaped flexible sealing bags are filled with fluid to bulge the arc-shaped flexible sealing bags, so that the arc-shaped cleaning cloth and the axle body are abutted together to wipe the lower side panel of the axle body. The inlet end of the water inlet channel is connected with the outlet end of a cooling water circulating pump of the engine through a water inlet pipe 49 provided with a first control valve 48, and the arc-shaped flexible sealing bag is communicated with the water inlet channel through a second control valve 50. The invention also provides a limit tube 51 extending in the direction of extension of the axle body. The one end of inlet tube links together with the exit end of the cooling water circulating pump of engine, and the other end is equipped with the spiral section 52 that can stretch out and draw back that extends along axle body extending direction, and the spiral section is located spacing intraductal, spacing intraductal being equipped with on global along the slip mouth 53 that extends of spacing tub extending direction, sliding connection has rigid tube head 54 in the slip mouth, and the one end of rigid tube head links together with the runner that intakes, and the other end links together with the one end of spiral section. The inner surface of the receiving groove is provided with an arc protrusion 55 along the circumferential edge of the axle body, and the water outlet hole is formed in the arc protrusion. In use, the wheel hub is fitted with a wheel 56.