CN113460323A

CN113460323A - Reformed chassis and airport ground support equipment

Info

Publication number: CN113460323A
Application number: CN202110738816.4A
Authority: CN
Inventors: 卿丽纯; 郭方云; 徐亮; 许乐平; 李红术; 方怡红; 石云; 胡千川; 陈奕松; 肖久焜
Original assignee: Hunan Shuangda Electromechanical Co ltd
Current assignee: Hunan Shuangda Electromechanical Co ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2021-10-01
Anticipated expiration: 2041-06-30
Also published as: CN113460323B

Abstract

The embodiment of the application provides this reform transform chassis and airport ground support equipment, belongs to airport support equipment technical field, and the reform transform chassis includes commercial chassis, transition dish, reforms transform transmission shaft, hydraulic motor and hydraulic pump. The commercial chassis is formed with a first mounting area for mounting a wheel reduction gear of a transaxle of the commercial chassis. The transition disc is arranged in the first installation area, replaces a hub reduction gear and is in driving connection with a hub and a half shaft of a drive axle respectively. The modified transmission shaft replaces the existing transmission shaft, and one end of the modified transmission shaft is in driving connection with the input shaft of the drive axle. The output shaft of the hydraulic motor is in driving connection with the other end of the modified transmission shaft. The hydraulic pump is configured to supply oil to the hydraulic motor to drive the hydraulic motor, the hydraulic pump being in driving connection with the engine instead of the gearbox. The reformed chassis and the airport ground support equipment provided by the embodiment of the application can give consideration to both low-speed stability and higher maximum driving speed.

Description

Reformed chassis and airport ground support equipment

Technical Field

The application relates to the technical field of airport security equipment, in particular to a reformed chassis and airport ground security equipment.

Background

In the related art, the deicing vehicle cannot give consideration to both low-speed stability and higher maximum driving speed.

Disclosure of Invention

In view of the above, embodiments of the present application are expected to provide a modified chassis and airport ground support equipment to ensure low speed stability and enable the airport ground support equipment to have a higher maximum driving speed.

In order to achieve the above object, an aspect of the embodiments of the present application provides a remanufactured chassis, including:

the commercial chassis is provided with a first mounting area, and the first mounting area is used for mounting a wheel-side speed reducer of a drive axle of the commercial chassis;

the transition disc is arranged in the first installation area, replaces the hub reduction gear and is in driving connection with a hub of the commercial chassis and a half shaft of the drive axle respectively;

the remanufactured transmission shaft replaces an existing transmission shaft of the commercial chassis, and one end of the remanufactured transmission shaft is in driving connection with an input shaft of the drive axle;

the output shaft of the hydraulic motor is in driving connection with the other end of the remanufactured transmission shaft; and

a hydraulic pump configured to supply oil to the hydraulic motor to drive the hydraulic motor, the hydraulic pump in driving connection with an engine of the commercial chassis in place of a gearbox of the commercial chassis.

In one embodiment, the hub of the commercial chassis has a first existing hole for mounting the hub reduction gear, and the transition disc is formed with a first mounting hole adapted to the first existing hole.

In an embodiment, a bearing pin shaft of the commercial chassis is used for transmitting torque between the hub reduction gear and the hub, the hub further has a second existing hole for accommodating the bearing pin shaft, the transition disc is further formed with a second mounting hole matched with the second existing hole, and the bearing pin shaft penetrates through the second existing hole and the second mounting hole.

In one embodiment, a positioning pin shaft of the commercial chassis is used for positioning between the hub reduction gear and the wheel hub, the diameter of the positioning pin shaft is smaller than that of the bearing pin shaft, the wheel hub is further provided with a third existing hole for accommodating the positioning pin shaft, a third mounting hole matched with the third existing hole is formed in the transition disc, and the positioning pin shaft is arranged in the third existing hole and the third mounting hole in a penetrating manner.

In one embodiment, the transition disc is formed with a half shaft mounting hole and a mounting boss, the half shaft mounting hole is used for installing the half shaft of the drive axle, the hole wall of the half shaft mounting hole is formed with an internal spline matched with an external spline of the half shaft, one end of the half shaft facing the transition disc is a half shaft reference end, an avoidance end of the external spline deviates from the end part of the half shaft reference end, the mounting boss is surrounded and arranged into an avoidance groove communicated with the half shaft mounting hole, the avoidance groove is located at the avoidance end of the external spline, and the first mounting hole penetrates through the mounting boss.

In one embodiment, the hub has a fourth existing hole for the axle to pass through, and the transition disc is formed with a positioning boss matched with the fourth existing hole, and the positioning boss is located in the fourth existing hole so that the hub positions the transition disc relative to the hub along the radial direction of the transition disc.

In one embodiment, the rotation speed of the hydraulic motor is greater than zero and less than or equal to 400 rpm.

In one embodiment, the speed ratio of the modified drive axle is less than 1.5.

In one embodiment, the commercial chassis is further provided with a second mounting area for mounting the gearbox, a preset mounting hole is formed in a frame of the commercial chassis, the remanufacturing chassis further comprises a pump support, the pump support is mounted in the second mounting area, the pump support is provided with a fourth mounting hole matched with the preset mounting hole, and the hydraulic pump is mounted in the pump support.

The embodiment of the application provides airport ground support equipment, include:

any of the above modified chassis;

and the guarantee operation device is arranged on the remanufactured chassis.

The reformed chassis of the embodiment of the application removes the original gearbox of the commercial chassis, integrally replaces the function of the original gearbox through the hydraulic pump and the hydraulic motor, has better low-speed stability in hydraulic transmission, can keep lower running speed of the reformed chassis in the running process, reduces the speed ratio of a reformed drive axle due to the removal of the wheel-side speed reducer and the drive connection of the half shaft and the wheel hub through the transition disc, has limited improvement on the running speed of the reformed chassis under the low-speed condition, can still stably maintain low-speed running, and has higher maximum running speed than the running speed under the low-speed condition, so that the maximum running speed is relatively obvious in speed change of the running speed caused by the speed ratio change, the maximum running speed of the reformed chassis is improved, and can meet the high-speed running requirement of airport ground guarantee equipment on an airport, thus, low speed stability and a high maximum driving speed can be both considered.

Drawings

FIG. 1 is a schematic structural diagram of a remanufactured chassis according to an embodiment of the present application;

FIG. 2 is a view taken along the line A in FIG. 1;

FIG. 3 is a cross-sectional view taken at location C-C of FIG. 2, with the wheel showing the rim portion and the tire not shown;

FIG. 4 is an assembly view of a hub, wheel and brake hub of an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a transition disk according to an embodiment of the present application;

FIG. 6 is a schematic structural diagram of a modified chassis according to an embodiment of the present application, in which a hydraulic motor and a hydraulic pump are omitted;

FIG. 7 is an enlarged view of FIG. 6 at position D;

FIG. 8 is a schematic structural view of a pump mount according to an embodiment of the present application;

FIG. 9 is an enlarged view at position E in FIG. 6;

fig. 10 is an enlarged view at position B in fig. 1.

Description of reference numerals: a first mounting area 11; half shafts 121; an avoidance end 1211; a half-shaft reference end 1212; a drive axle 12; a hub 13; a first existing aperture 131; a second existing aperture 132; a third existing aperture 133; a fourth existing aperture 134; a main hub 135; a secondary hub 136; a frame 15; a longitudinal beam 151; a first cross member 152; a second cross member 153; a driven axle 16; a positioning pin 17; a second mounting area 18; a flywheel housing 19; a fifth existing bore 191; a transition disc 2; a first mounting hole 21; a second mounting hole 22; a third mounting hole 23; half-shaft mounting holes 24; mounting bosses 25; an avoidance slot 26; a positioning boss 27; the transmission shaft 3 is remanufactured; a hydraulic motor 4; a hydraulic pump 5; a pump bracket 6; a fourth mounting hole 61; a fifth mounting hole 62; a transmission assembly 7; a mounting flange 71; a coupling 72; a hoisting component 8; a motor mount 9; a bushing assembly 10; a sleeve body 101; a baffle plate 102; an end cap 200; a wheel 300; the hub 400 is braked.

Detailed Description

It should be noted that, in the present application, technical features in examples and embodiments may be combined with each other without conflict, and the detailed description in the specific embodiment should be understood as an explanation of the gist of the present application and should not be construed as an improper limitation to the present application.

In the description of the embodiments of the present application, "upper", "lower", "top", "bottom", orientation or positional relationship is based on the orientation or positional relationship shown in fig. 1, it being understood that these orientation terms are merely for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be considered limiting of the present application.

As part of the inventive concept of the present application, before describing the embodiments of the present application, the reasons why the low speed stability and the higher maximum driving speed of the airport ground support equipment cannot be considered are analyzed, and the technical solution of the embodiments of the present application is obtained through reasonable analysis.

In the related art, airport ground support equipment, such as an airport deicing vehicle, usually adopts a gearbox for mechanical transmission on a commercial chassis, and the commercial chassis has poor low-speed stability and high minimum running speed, so that the requirement that the airport deicing vehicle slowly bypasses airplanes cannot be met. The hydraulic transmission has good low-speed stability, although the chassis can run at a low speed, the maximum running speed is low, when the deicing vehicle finishes deicing operation on the airplane, the deicing vehicle needs to run away from the airplane at a high speed and run to a target position, for example, the deicing vehicle needs a high running speed in the process of running away from the airplane and returning to a warehouse, and the high-speed running requirement of the deicing vehicle after the deicing operation is difficult to meet due to the low maximum running speed of the hydraulic transmission. Therefore, airport ground support equipment, such as ice vehicles, cannot compromise between low speed stability and high maximum travel speeds.

In view of this, the embodiment of the present application provides an airport ground support equipment, and the airport ground support equipment includes a modified chassis and a support operation device. The guarantee operation device is arranged on the reformed chassis.

Referring to fig. 1 and 6, the modified chassis according to the embodiment of the present application includes a commercial chassis, a transition plate 2, a modified transmission shaft 3, a hydraulic motor 4, and a hydraulic pump 5.

In one embodiment, the commercial chassis generally includes a frame 15, a drive axle 12, a driven axle 16, a hub 13, an engine, a transmission, and an existing propeller shaft. The driving axle 12 and the driven axle 16 are mounted on the frame 15, and the driving axle 12 and the driven axle 16 are respectively in driving connection with the corresponding wheel hubs 13. The drive axle 12 comprises a main speed reducer, a differential, half shafts 121 and a wheel reduction gear, the existing transmission shaft drives the main speed reducer, the main speed reducer drives the differential, the two half shafts 121 are respectively in driving connection with the differential, one end of each half shaft 121, which deviates from the differential, is in driving connection with the wheel reduction gear, and the wheel reduction gear is in driving connection with the corresponding wheel hub 13. The engine is arranged on the frame 15, the gearbox is in driving connection with the engine, one end of the existing transmission shaft is in driving connection with the gearbox, and the other end of the existing transmission shaft is in driving connection with the input shaft of the drive axle 12 to drive the main speed reducer. The commercial chassis is formed with a first mounting area 11, the first mounting area 11 being used for mounting a wheel reduction gear of a transaxle 12 of the commercial chassis.

In one embodiment, the drive axle 12 is a rear axle and the driven axle is a front axle.

In one embodiment, the input shaft of the transaxle 12 is the input shaft of a final drive.

In one embodiment, referring to fig. 3, the commercial chassis further includes a wheel 300, and the wheel 300 is sleeved on the hub 13 and is in driving connection with the hub 13.

In one embodiment, the wheel 300 includes a rim and a tire wrapped around the rim, the rim of the wheel being shown in FIG. 3 but the tire not being shown.

In one embodiment, the rim is a steel ring.

In one embodiment, referring to fig. 3, the hub 13 includes a main hub 135 and an auxiliary hub 136, the auxiliary hub 136 is mounted on the main hub 135, and the wheel 300 is sleeved on the auxiliary hub 136 and is in driving connection with the auxiliary hub 136.

In one embodiment, referring to fig. 3, the rim is sleeved on the auxiliary hub 136 and is drivingly connected to the auxiliary hub 136.

In one embodiment, the secondary hub 136 is a central hub.

In one embodiment, referring to FIG. 3, the commercial chassis further includes a brake hub 400 mounted to the hub 13.

In one embodiment, referring to FIG. 3, a brake hub 400 is mounted to the auxiliary hub 136.

In one embodiment, referring to fig. 3 and 4, the hub 13 of the commercial chassis has a first existing bore 131 for mounting a hub reduction gear.

In one embodiment, referring to fig. 3 and 4, the first existing aperture 131 is formed in the sub-hub 136.

In one embodiment, the number of the first existing holes 131 is plural, and the plural first existing holes 131 are uniformly arranged along the circumferential direction of the hub 13.

In one embodiment, referring to fig. 3 and 4, the commercial chassis further includes a load pin for transmitting torque between the hub 13 and the hub reduction gear, and the hub 13 further has a second existing hole 132 for receiving the load pin.

In one embodiment, the number of the second existing holes 132 is plural, and the plural second existing holes 132 are uniformly arranged in the circumferential direction of the hub 13.

In one embodiment, referring to fig. 3 and 4, the second existing aperture 132 is formed in the sub-hub 136.

In one embodiment, referring to fig. 3 and 4, the commercial chassis further includes a positioning pin 17, the positioning pin 17 is used for positioning between the edge speed reducer and the hub 13, the diameter of the positioning pin 17 is smaller than that of the bearing pin, and the hub 13 further has a third existing hole 133 for accommodating the positioning pin 17.

In one embodiment, the number of the third existing holes 133 is plural, and the plural third existing holes 133 are uniformly arranged in the circumferential direction of the hub 13.

It will be appreciated that the load bearing pin is primarily used to transmit torque and has a relatively large diameter to prevent damage from overloading. The torque load mainly acts on the bearing pin shaft, the load action of the positioning pin shaft 17 is small, and the small shaft diameter can meet the load requirement.

In one embodiment, referring to fig. 3 and 4, a third existing aperture 133 is formed in the sub-hub 136.

In one embodiment, axle half shafts 121 of transaxle 12 are externally splined at the end toward the hub reduction gear.

In one embodiment, referring to FIGS. 3 and 4, hub 13 has a fourth existing bore 134 for passing axle shaft 121 therethrough.

In one embodiment, referring to fig. 3 and 4, a fourth existing aperture 134 is formed in a secondary hub 136.

In one embodiment, the commercial chassis further includes an end cap 200, where end cap 200 is coupled to hub 13 to prevent half shaft 121 from being exposed to hub 13.

In one embodiment, referring to FIG. 7, the commercial chassis is further formed with a second mounting area 18 for mounting a transmission.

In one embodiment, the frame 15 of the commercial chassis is formed with pre-set mounting holes.

In one embodiment, the engine includes a flywheel and a flywheel housing 19. The flywheel is arranged in a flywheel housing 19.

In one embodiment, the flywheel housing 19 has a fifth existing hole 191 for mounting a gearbox.

In one embodiment, the engine includes a power cylinder and a crankshaft, the power cylinder driving the crankshaft to rotate, and the crankshaft driving the flywheel to rotate.

In one embodiment, referring to fig. 1, 2 and 6, the frame 15 of the commercial chassis includes two longitudinal beams 151 disposed opposite to each other, and the predetermined mounting holes are formed in the longitudinal beams 151.

In one embodiment, referring to fig. 1, 2 and 6, frame 15 further includes a first cross member 152 coupled between two opposing longitudinal members 151.

In one embodiment, referring to fig. 1, 2 and 6, the frame 15 further includes a second cross member 153 connected between the two opposing side members 151.

In one embodiment, referring to fig. 1, 2 and 6, the second beam 153 is located on a side of the first beam 152 facing away from the flywheel housing 19.

In one embodiment, referring to fig. 3, the transition disk 2 is mounted in the first mounting region 11, and the transition disk 2 is in driving connection with the hub 13 of the commercial chassis and the axle shaft 121 of the drive axle 12 instead of the hub reduction gear. The modified transmission shaft 3 replaces the existing transmission shaft of the commercial chassis, and one end of the modified transmission shaft 3 is in driving connection with the input shaft of the drive axle 12. The output shaft of the hydraulic motor 4 is in driving connection with the other end of the modified transmission shaft 3. The hydraulic pump 5 is configured to supply oil to the hydraulic motor 4 to drive the hydraulic motor 4, the hydraulic pump 5 being in driving connection with the engine of the commercial chassis instead of the gearbox of the commercial chassis. In the structure, the original gearbox of the commercial chassis is removed, the original gearbox function is integrally replaced by the hydraulic pump 5 and the hydraulic motor 4, the hydraulic transmission has better low-speed stability, the lower running speed of the modified chassis can be kept in the running process, the half shaft 121 and the hub 13 are in driving connection by removing the wheel-side speed reducer and the transition disc 2, so that the speed ratio of the modified drive axle is reduced, the speed ratio reduction has limited promotion on the running speed of the modified chassis under the low-speed condition, the modified chassis can still stably maintain the low-speed running, the maximum running speed is higher than the running speed under the low-speed condition, the maximum running speed is relatively obvious to the running speed change caused by the speed ratio change, the maximum running speed of the modified chassis is improved, and the high-speed running requirement of airport ground guarantee equipment on an airport can be met, thus, low speed stability and a high maximum driving speed can be both considered.

It should be noted that the gearbox and the wheel reduction gear are replaced, meaning that the remanufactured chassis no longer has a gearbox and a wheel reduction gear.

The speed ratio of the drive axle means the ratio of the input shaft speed to the output shaft speed (half shaft speed) of the drive axle when the differential is locked, i.e., the differential does not produce a differential. A speed ratio greater than 1 is deceleration. The speed ratio of the transaxle of a commercial chassis is typically greater than 1.

It can be understood that the transition disk 2 is used for connecting the hub 13 and the half shaft 121 instead of a hub reduction gear, the transition disk 2 is only a connecting disk and has no reduction effect, and after the transition disk is used for connecting the hub 13 and the half shaft 121, the speed ratio between the half shaft 121 and the hub 13 is almost 1.

In one embodiment, the speed of the hydraulic motor 4 is greater than zero and less than or equal to 400rpm (revolutions per minute). The hydraulic motor 4 has good low speed stability, and the lowest stable rotating speed can be lower than 1 rpm.

In one embodiment, the rotation speed of the hydraulic motor 4 may be 1rpm, 2rpm, 10rpm, 100rpm, 200rpm, or 350 rpm.

In one embodiment, the output torque of the hydraulic motor 4 is greater than 5000n.m (n.m).

In one embodiment, the output torque of the hydraulic motor 4 is 17000n.m (n.m).

In one embodiment, the hydraulic motor 4 has a displacement of 300ml/r (milliliters per revolution) to 3000ml/r and a working pressure of 50 MPa.

In one embodiment, the speed ratio of the modified drive axle is less than 1.5.

In one embodiment, the speed ratio of the modified drive axle is the speed ratio of the main speed reducer.

In one embodiment, the ratio of the modified transaxle is 1.1, 1.3, or 1.4.

In one embodiment, referring to fig. 3-5, the transition disc 2 is formed with a first mounting hole 21 that is adapted to the first existing hole 131. In such a structure, the transition disc 2 can be mounted on the hub 13 through the first mounting hole 21, and the transition disc 2 is mounted on the hub 13 by utilizing the existing first existing hole 131 on the hub 13 and the original bolt penetrating through the first existing hole 131 of the commercial chassis, so that the original characteristics of the commercial chassis can be maintained as much as possible, the change amount of the commercial chassis is small, and the modification cost is saved.

In an embodiment, a through hole for mounting the transition disk 2 may be additionally formed on the hub 13 according to actual needs.

In one embodiment, the number of the first mounting holes 21 is multiple, and the multiple first mounting holes 21 are uniformly arranged along the circumferential direction of the transition disc 2.

In an embodiment, referring to fig. 3 to fig. 5, the transition disc 2 further forms a second mounting hole 22 matching with the second existing hole 132, and the bearing pin shaft is disposed through the second existing hole 132 and the second mounting hole 22. In such a structure, the original bearing pin shaft of the commercial chassis can be used to penetrate through the second existing hole 132 and the second mounting hole 22 so as to transmit the torque between the transition disc 2 and the hub 13. The original bearing pin shaft and the existing second existing hole 132 are used for realizing torque transmission between the transition disc 2 and the hub 13, the original characteristics of the commercial chassis can be kept as far as possible, the change amount of the commercial chassis is small, and the change cost is saved.

In one embodiment, the second mounting hole 22 may be a blind hole or a through hole.

In one embodiment, the number of the second mounting holes 22 is multiple, and the multiple second mounting holes 22 are uniformly arranged along the circumferential direction of the transition disc 2.

In an embodiment, a through hole for accommodating the bearing pin shaft may be additionally formed on the hub 13 according to actual conditions.

In an embodiment, referring to fig. 3 to 5, the transition disc 2 is formed with a third mounting hole 23 adapted to the third existing hole 133, and the positioning pin 17 is inserted through the third existing hole 133 and the third mounting hole 23. In such a structure, the original positioning pin 17 of the commercial chassis can be used to penetrate through the third existing hole 133 and the third mounting hole 23 to position the transition disc 2 and the hub 13. The original positioning pin shaft 17 and the existing third existing hole 133 are used for positioning the transition disc 2 and the hub 13, the original characteristics of the commercial chassis can be kept as far as possible, the change amount of the commercial chassis is small, and the change cost is saved.

In one embodiment, the number of the third mounting holes 23 is multiple, and the multiple third mounting holes 23 are uniformly arranged along the circumferential direction of the transition disc 2.

In an embodiment, according to actual needs, a through hole for accommodating the positioning pin 17 may be additionally formed on the hub 13.

In one embodiment, referring to fig. 3 to 5, the transition disc 2 is formed with a half axle mounting hole 24 and a mounting boss 25, the half axle mounting hole 24 is used for mounting the half axle 121 of the drive axle 12, the hole wall of the half axle mounting hole 24 is formed with an internal spline adapted to an external spline of the half axle 121, one end of the half axle 121 facing the transition disc 2 is a half axle reference end 1212, and an escape end 1211 of the external spline is an end portion away from the half axle reference end 1212. The mounting boss 25 is surrounded by an escape groove 26 communicating with the half shaft mounting hole 24, the escape groove 26 is located at an escape end 1211 of the external spline, and the first mounting hole 21 penetrates the mounting boss 25. In such a structural form, the half shaft mounting hole 24 is used for sleeving the transition disc 2 on the half shaft 121 to be in driving connection with the half shaft 121, driving connection between the transition disc 2 and the half shaft 121 is achieved through meshing of the inner spline and the outer spline, the groove depth of the groove part of the outer spline is gradually reduced due to tool withdrawal in the machining process of the avoiding end 1211 of the outer spline, so that the avoiding end 1211 of the outer spline is not suitable to be matched with the inner spline of the half shaft mounting hole 24, and the avoiding groove 26 surrounded by the mounting boss 25 is used for avoiding the avoiding end 1211 of the outer spline, so that the half shaft 121 can be well mounted on the transition disc 2. The setting of installation boss 25 makes transition dish 2 longer along transition dish 2 axial size in installation boss 25 position department, can adapt to the original bolt length that is used for installing wheel hub 13 and hub reduction gear to can utilize original bolt to install transition dish 2 on wheel hub 13.

In one embodiment, referring to fig. 3 and 5, the transition disc 2 is formed with a positioning boss 27 matching with the fourth existing hole 134, and the positioning boss 27 is located in the fourth existing hole 134 to position the hub 13 with respect to the transition disc 2 along the radial direction of the transition disc 2. In this configuration, the transition disk 2 is radially positioned by forming the positioning boss 27 on the transition disk 2 to fit into the existing fourth existing bore 134 on the hub 13. The existing fourth existing hole 134 on the hub 13 is used for positioning the transition disc 2, the original characteristics of the commercial chassis can be kept as far as possible, the change amount of the commercial chassis is small, and the change cost is saved.

In an embodiment, referring to fig. 1, 6 to 8, the modified chassis further includes a pump bracket 6, the pump bracket 6 is mounted on the second mounting area 18, the pump bracket 6 has a fourth mounting hole 61 adapted to the predetermined mounting hole, and the hydraulic pump 5 is mounted on the pump bracket 6. According to the structure, the pump bracket 6 is arranged in the second mounting area 18, the hydraulic pump 5 is arranged on the pump bracket 6, and the hydraulic pump 5 is favorably connected with an engine drive instead of a gearbox. The fourth mounting hole 61 may be aligned with the preset mounting hole, and the pump bracket 6 may be mounted on the frame 15 of the commercial chassis by using a fastener such as a bolt to pass through the fourth mounting hole 61 and the preset mounting hole, and the hydraulic pump 5 may be mounted on the pump bracket 6. The installation of the hydraulic pump 5 can be realized by utilizing the original preset installation hole on the frame 15 of the commercial chassis, so that the hydraulic pump 5 can be conveniently installed on the frame 15 of the commercial chassis or detached from the frame 15 through the pump bracket 6, the hole for installing the hydraulic pump 5 or the pump bracket 6 is not required to be newly arranged on the commercial chassis, the original structural performance of the commercial chassis can be kept as far as possible, and the chassis remodeling cost is reduced. The modified chassis is changed into hydraulic transmission from the original mechanical transmission of a gearbox of a commercial chassis.

In one embodiment, the predetermined mounting holes are formed in the longitudinal beams 151.

In one embodiment, a pre-set mounting hole aligned with the fourth mounting hole 61 of the pump bracket 6 is used for mounting the gearbox. According to the structure, the hydraulic pump 5 is installed on the pump support 6, the pump support 6 is installed through the original installation hole for installing the gearbox on the frame 15, and therefore the rear suspension performance of the hydraulic pump 5 with the modified chassis can be consistent with that of the gearbox of the original commercial chassis as far as possible.

In an embodiment, referring to fig. 1, 6 to 8, the pump bracket 6 further forms a fifth mounting hole 62 adapted to the fifth existing hole 191. With this configuration, the front suspension performance of the hydraulic pump 5 of the modified chassis can be matched with that of the transmission of the original commercial chassis as much as possible by the fifth mounting hole 62 matched with the fifth existing hole 191 for mounting the transmission so that the pump bracket 6 can be conveniently mounted on the flywheel housing 19. The pump bracket 6 is installed through the fifth existing hole 191, and a hole for installing the pump bracket 6 is not required to be additionally formed in the flywheel shell 19, so that the original structural performance of the commercial chassis can be kept as far as possible, and the chassis remanufacturing cost is reduced.

In an embodiment, referring to fig. 1, 6 and 7, the modified chassis further includes a transmission assembly 7, the transmission assembly 7 is connected to a flywheel of the engine, the transmission assembly 7 is sleeved on an input shaft of the hydraulic pump 5 so that the input shaft of the hydraulic pump 5 rotates along with the transmission assembly 7, and the transmission assembly 7 is spaced from a housing of the hydraulic pump 5 by a predetermined distance. With the structure, the transmission assembly 7 connected with the flywheel can be prevented from rubbing with the shell of the hydraulic pump 5 in the rotating process, and the equipment abrasion and the loss can be reduced.

In one embodiment, referring to fig. 10, the transmission assembly 7 is spaced from the housing of the hydraulic pump 5 by a predetermined distance along the axial direction of the input shaft of the hydraulic pump 5, and the predetermined distance is D1.

In one embodiment, referring to fig. 7 and 10, the transmission assembly 7 includes a mounting flange 71 and a coupler 72 connected to each other, the mounting flange 71 is connected to a flywheel so that the flywheel drives the mounting flange 71 to rotate, the flywheel rotates to drive the coupler 72 to rotate, the coupler 72 is sleeved on an input shaft of the hydraulic pump 5 so that the input shaft of the hydraulic pump 5 rotates along with the coupler 72, and the coupler 72 is spaced from a housing of the hydraulic pump 5 by a predetermined distance. In such a structure, the mounting flange 71 is connected with the flywheel, and the holes formed in the mounting flange 71 and assembled with the coupling 72 can be arranged according to actual conditions, so that the transmission assembly 7 is more flexibly mounted and can be suitable for mounting the couplings 72 with different specifications.

In one embodiment, referring to fig. 10, the coupling 72 is spaced from the housing of the hydraulic pump 5 by a predetermined distance D1 along the axial direction of the input shaft of the hydraulic pump 5.

In one embodiment, the dimension D1 may be generally 3mm, 5mm, 6mm, or 8 mm.

It can be understood that the hydraulic pump 5 is long, and when one end of the hydraulic pump 5 is connected to the pump bracket 6, the other end of the hydraulic pump 5 is suspended, so that the stability of the hydraulic pump 5 after installation is poor. In view of this, in an embodiment, the modified chassis further includes a hoisting assembly 8 mounted on the first cross beam 152, the hoisting assembly 8 is connected to the other end of the hydraulic pump 5, and the hoisting assembly 8 is mounted through a reserved hole on the first cross beam 152. Structural style like this, through hoist and mount subassembly 8 with the one end hoist and mount of hydraulic pump 5 deviating from pump bracket 6 on frame 15, improved the stability after the installation of hydraulic pump 5, avoided hydraulic pump 5 to deviate from the unsettled relatively poor problem of stability that leads to the fact of the one end of pump bracket 6. One end of the hydraulic pump 5, which is far away from the pump bracket 6, is hoisted on the frame 15 through the hoisting component 8, so that the rear suspension performance of the hydraulic pump 5 with the reformed chassis can be consistent with the rear suspension performance of the gearbox of the original commercial chassis as much as possible, and the suspension performance of the original commercial chassis is basically not changed. The hoisting assembly 8 is installed by using the existing preformed hole on the first cross beam 152, so that the commercial chassis is changed in a small amount and is changed at a low cost.

In an embodiment, referring to fig. 1, 6 and 9, the modified chassis further includes a motor mounting bracket 9. The motor mount 9 is mounted to the second cross member 153, and the motor mount 9 is mounted through a prepared hole of the second cross member 153. The hydraulic motor 4 is mounted to a motor mount 9. With the structure, the motor mounting frame 9 is mounted on the second cross beam 153 by using the preformed hole of the second cross beam 153 of the frame 15, and no mounting hole for mounting the motor bracket and the hydraulic motor 4 is required to be additionally formed, so that the improvement amount of the commercial chassis is reduced as much as possible, and the cost is saved. The hydraulic motor 4 is mounted on the motor mounting frame 9 without being directly connected with the frame 15, so that the hydraulic motor 4 can be mounted with good flexibility, and for the hydraulic motors 4 with different specifications, the motor mounting frame 9 can be correspondingly matched with the hydraulic motors.

In one embodiment, referring to fig. 1 and 6, the motor mounting bracket 9 is configured to make the output shaft of the hydraulic motor 4 coaxial with the modified transmission shaft 3, an included angle between the axial direction of the modified transmission shaft 3 and the horizontal direction is a predetermined included angle θ, and the predetermined included angle θ is 2 to 10 °. According to the structure, the preset included angle theta is within the range of 2-10 degrees, so that the arrangement of the remanufactured transmission shaft 3 can basically meet the design specification of a chassis transmission system.

In one embodiment, referring to fig. 1, 6 and 9, the modified chassis further includes a shaft sleeve assembly 10. The shaft sleeve assembly 10 is sleeved on the output shaft of the hydraulic motor 4 so that the shaft sleeve assembly 10 rotates along with the output shaft of the hydraulic motor 4, and the shaft sleeve assembly 10 is in driving connection with the modified transmission shaft 3. In this way, the output shaft of the hydraulic motor 4 is in driving connection with the modified transmission shaft 3 through the sleeve assembly 10, and the torque of the output shaft of the hydraulic motor 4 is transmitted to the modified transmission shaft 3 through the sleeve assembly 10.

In one embodiment, the sleeve assembly 10 is flanged to the modified drive shaft 3.

In one embodiment, referring to fig. 9, the bushing assembly 10 includes a bushing body 101 and a baffle 102. The sleeve body 101 is sleeved on the output shaft of the hydraulic motor 4 so that the sleeve body 101 rotates along with the output shaft of the hydraulic motor 4, and the sleeve body 101 is in driving connection with the modified transmission shaft 3. A stopper 102 is attached to one end of the output shaft of the hydraulic motor 4 to prevent the boss body 101 from coming out of the output shaft of the hydraulic motor 4. The baffle plate 102 is located between the sleeve body 101 and the modified drive shaft 3. In such a structure, the shaft end baffle plate 102 is arranged in the space between the shaft sleeve body 101 and the modified transmission shaft 3, so that the equipment structure is compact.

The airport ground support equipment of the embodiment of the application has the minimum stable speed less than or equal to 1km/h, so that the deicing vehicle is comfortable to operate around the working condition of the deicing vehicle. The maximum stable speed can reach 40km/h, and the high-speed running requirement of the deicing vehicle in a non-deicing operation state can be met.

The various embodiments/implementations provided herein may be combined with each other without contradiction.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A remanufactured chassis, comprising:

2. The remanufactured chassis of claim 1, wherein a hub of the commercial chassis has a first pre-existing hole for mounting the hub reduction gear, the transition disc being formed with a first mounting hole that mates with the first pre-existing hole.

3. The remanufactured chassis of claim 2, wherein a carrier pin of the commercial chassis is configured to transmit a torque between the hub reduction gear and the hub, the hub further having a second existing hole configured to receive the carrier pin, the transition disc further having a second mounting hole configured to mate with the second existing hole, the carrier pin being disposed through the second existing hole and the second mounting hole.

4. The remanufactured chassis of claim 3, wherein a positioning pin of the commercial chassis is used for positioning between the hub reduction gear and a hub, the diameter of the positioning pin is smaller than that of the bearing pin, the hub further has a third existing hole for accommodating the positioning pin, the transition disc is further formed with a third mounting hole matched with the third existing hole, and the positioning pin penetrates through the third existing hole and the third mounting hole.

5. The remanufactured chassis of claim 2, wherein the transition disc is formed with a half shaft mounting hole and a mounting boss, the half shaft mounting hole is used for mounting a half shaft of the drive axle, an inner spline matched with an outer spline of the half shaft is formed on a wall of the half shaft mounting hole, one end of the half shaft facing the transition disc is a half shaft reference end, an avoidance end of the outer spline deviates from an end portion of the half shaft reference end, the mounting boss is surrounded by an avoidance groove communicated with the half shaft mounting hole, the avoidance groove is located at the avoidance end of the outer spline, and the first mounting hole penetrates through the mounting boss.

6. A remanufacturing chassis according to claim 1, wherein the hub has a fourth existing bore for passage of the axle therethrough, the transition disc being formed with a locating boss that mates with the fourth existing bore, the locating boss being located within the fourth existing bore to locate the hub relative to the transition disc in a radial direction of the transition disc.

7. The remanufactured chassis of any one of claims 1 to 6, wherein a rotational speed of the hydraulic motor is greater than zero and less than or equal to 400 rpm.

8. The remanufactured chassis of any one of claims 1 to 6, wherein a speed ratio of the transaxle after remanufacturing is less than 1.5.

9. The remanufacturing chassis of any one of claims 1 to 6, wherein the commercial chassis is further formed with a second mounting area for mounting the gearbox, a frame of the commercial chassis is formed with a predetermined mounting hole, the remanufacturing chassis further comprises a pump bracket, the pump bracket is mounted to the second mounting area, the pump bracket is provided with a fourth mounting hole matched with the predetermined mounting hole, and the hydraulic pump is mounted to the pump bracket.

10. The utility model provides an airport ground support equipment which characterized in that includes:

a remanufactured chassis according to any one of claims 1 to 9;

and the guarantee operation device is arranged on the remanufactured chassis.