Novel steering drive axle assembly process for port AGV (Automatic Guided Vehicle)

Abstract

The invention discloses a novel port AGV steering drive axle assembly technology, and relates to the technical field of AGV steering drive axle assembly.The novel port AGV steering drive axle assembly technology comprises an axle housing, a half shaft, a steering knuckle and a main pin body, and is characterized in that a spline is arranged on the side wall of one end of the half shaft, and the other end of the half shaft is connected with a connecting block through a rotating joint; the connecting block is provided with a positioning assembly used for positioning when the half shaft is assembled, and the axle housing is provided with a locking assembly used for locking the main pin body. According to the novel steering drive axle assembly process for the port AGV, by adjusting the assembly sequence of the steering drive axle assembly main pin, when a steering knuckle is assembled, angle deflection is not needed to enable a main pin hole of the steering knuckle to penetrate through a main pin body, and only horizontal pushing-in needs to be guaranteed, so that the risks of extrusion and scratch of a steering oil seal are reduced, and the assembly efficiency is improved. And the assembly difficulty of the steering knuckle is also reduced.

Description

Technical Field

[0001] The invention relates to the technical field of assembling a steering drive axle for an AGV vehicle, in particular to an assembly process of a steering drive axle for a new type of port AGV vehicle. Background Art

[0002] The chassis drive system can provide stable and efficient power output according to the operating status and operation requirements of the AGV vehicle. The maximum power of the motor can reach tens of kilowatts, and the maximum torque can meet the starting and acceleration requirements of a fully loaded vehicle. At the same time, the steering system can respond to control commands quickly and accurately to achieve smooth steering of the vehicle. The two work together to ensure that the AGV vehicle can quickly and accurately locate and transport goods during port operations, thereby improving operational efficiency and accuracy.

[0003] In the existing technology of drive axle assembly, the assembly of the kingpin, half-axle and steering knuckle is carried out in the order of the kingpin first, the half-axle second and the steering knuckle last. Although the pre-installation of the kingpin can provide support and guidance for the installation of the half-axle and the steering knuckle, the front end of the half-axle is a spline structure, and the steering knuckle needs to pass through the half-axle when it is installed on the bridge housing. Since the kingpin is assembled first, the angle needs to be adjusted when the steering knuckle is installed so that the kingpin hole of the steering knuckle passes through the kingpin, which has the risk of squeezing and scratching the knuckle oil seal by the side wall of the half-axle. In addition, the first assembly of the kingpin requires the kingpin to be assembled after being cooled by liquid nitrogen (the temperature is about -200°C), and after the assembly is completed, it is necessary to wait for the kingpin to return to temperature before assembling other parts (to prevent low temperature from damaging the performance of other parts). Therefore, not only the assembly efficiency of the bridge assembly is reduced, but also the water vapor and condensed water brought by the cold installation process are easily infiltrated into the interior of the bridge assembly, thereby increasing the quality risks of the bridge assembly. For this reason, a new assembly process for steering drive axles for port AGV vehicles is proposed. Summary of the invention

[0004] The purpose of the present invention is to provide a novel assembly process of a steering drive axle for a port AGV vehicle to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a new type of steering drive axle assembly process for port AGV vehicles, comprising the following steps:

[0006] S. Clean the axle housing and half-axle, remove the oil, iron filings and impurities on the surface, and check the half-axle installation position in the axle housing to confirm that its dimensional accuracy and surface roughness meet the design requirements and there are no burrs or bumps. Apply assembly grease to the journal of the half-axle and install the half-axle into the axle housing;

[0007] S. After the half-axle is assembled, clean the steering knuckle, remove surface impurities, check its appearance, and apply grease again to the inner hole of the steering knuckle journal and the journal position of the half-axle, put it on the half-axle, and push it horizontally to the side wall of the axle housing;

[0008] S. After the steering knuckle is assembled, clean and inspect the kingpin body to ensure that the surface finish, cylindricity and dimensional accuracy of the kingpin body meet the design requirements and there is no bending or deformation. Apply lubricating oil on the surface of the kingpin body, and finally align one end of the kingpin body with the kingpin hole of the steering knuckle, and pass it through the kingpin hole of the steering knuckle, the kingpin hole of the axle housing and the kingpin hole of the half shaft in sequence;

[0009] S. Lock the kingpin body.

[0010] Preferably, the assembly process of the steering drive axle for the new port AGV vehicle includes a bridge housing, a half-shaft, a steering knuckle and a kingpin body, and is characterized in that: a side wall at one end of the half-shaft is provided with a spline, the other end of the half-shaft is connected to a connecting block through a rotating joint, the steering knuckle is provided with an oil seal, the bridge housing, the half-shaft and the connecting block are all provided with a kingpin hole, the connecting block is provided with a positioning assembly for positioning during the assembly of the half-shaft, and the bridge housing is provided with a locking assembly for locking the kingpin body.

[0011] Preferably, the positioning assembly includes a countersunk hole opened on the bottom wall of the kingpin hole of the connecting block, the countersunk hole is slidably connected with a positioning circular plate, and a plurality of positioning plates are provided on the side of the positioning circular plate close to the kingpin hole of the bridge housing, and both sides of each of the positioning plates are arranged with arc surfaces, and an arc-shaped elastic plate is provided on the arc surface close to the kingpin body, and the countersunk hole is provided with a driving assembly for driving each positioning plate and a guiding assembly for guiding each positioning plate during the driving process.

[0012] Preferably, the guide assembly comprises a guide hole formed on a side wall of the positioning circular plate, the guide hole is slidably connected to a guide plate, and one end of the guide plate is connected to the positioning plate.

[0013] Preferably, the driving assembly includes a driving circular plate rotatably connected to the side of the positioning circular plate away from the positioning plate, the driving circular plate is provided with a plurality of driving inclined holes, one end of each of the guide plates is slidably connected to the driving inclined hole, and the countersunk hole is provided with a pushing assembly for pushing the driving circular plate and an extrusion assembly for extruding the driving circular plate.

[0014] Preferably, the pushing assembly includes a pushing tube fixedly connected to the bottom wall of the countersunk hole, the pushing tube is slidably connected to a pushing rod, one end of the pushing rod is connected to the driving circular plate, a spiral groove and a straight groove are provided on the side wall of the pushing rod, the opposite ends of the spiral groove and the straight groove are connected, the spiral groove is arranged close to the driving circular plate, and a push rod is fixedly connected to the inner wall of the pushing tube, and the push rod slides in the straight groove and the spiral groove.

[0015] Preferably, the extrusion assembly includes a plurality of extrusion tubes fixedly connected to the bottom wall of the countersunk hole, each of the extrusion tubes is arranged in a circular array and surrounds the circumference of the pushing tube, each of the extrusion tubes is slidably connected to an extrusion rod, and one end of each extrusion rod away from the bottom wall of the countersunk hole is connected to a driving circular plate through a rotating assembly, and a spring is provided on the side wall of each of the extrusion tubes, and both ends of each of the springs are respectively connected to the driving circular plate and the bottom wall of the countersunk hole.

[0016] Preferably, the rotating assembly includes an annular dovetail groove opened on a side of the driving circular plate close to the extrusion rod, the annular dovetail groove is rotatably connected to an annular dovetail plate, and one end of each extrusion rod close to the driving circular plate is connected to the annular dovetail plate.

[0017] Preferably, the connecting block is provided with a shrinking assembly for shrinking each positioning plate, the shrinking assembly includes a shrinking hole opened on the side of the connecting block close to the half-axis, the shrinking hole is slidably connected with a shrinking plate, and one end of the shrinking plate is connected to the positioning circular plate.

[0018] Preferably, the locking assembly comprises locking rings fixedly connected to both sides of the bridge housing, a locking rod is provided between the two locking rings, and a bevel is provided on one side of the locking rod close to the kingpin body.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The novel steering drive axle assembly process for port AGV vehicles of the present invention adjusts the assembly sequence of the kingpin of the steering drive axle assembly. Under the positioning action of the positioning component, while providing support and guidance for the assembly of the half-axle and the steering knuckle, the final assembly of the kingpin body makes it unnecessary to perform angular deflection during the assembly of the steering knuckle so that the kingpin hole of the steering knuckle passes through the kingpin body, and it only needs to be pushed in horizontally, thereby not only reducing the risk of squeezing and scratching the steering knuckle oil seal, but also reducing the difficulty of assembling the steering knuckle.

[0021] 2. The new steering drive axle assembly process for port AGV vehicles of the present invention, under the locking action of the locking component, adjusts the kingpin body from cold installation to normal temperature assembly, thereby reducing the influence of water vapor, condensed water, etc. brought by the cold installation process on the quality of the bridge assembly parts, such as rust, sticking, etc., and the normal temperature press installation has good versatility, which can not only meet the assembly of this steering drive axle, but also be compatible with the assembly of other platform products. At the same time, it avoids the use of kingpin body cooling equipment, thereby reducing the installation cost of the kingpin body while reducing the assembly waiting time, thereby improving the economy and efficiency of the bridge assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the assembly sequence of the axle housing, half shaft, steering knuckle and kingpin body of the present invention;

[0024] Figure 3 It is a schematic diagram of the structural relationship of the semi-axles of the present invention;

[0025] Figure 4 This is a schematic diagram of the internal structure of the locking assembly of the present invention;

[0026] Figure 5 This is a schematic diagram of the internal structure of the positioning component of the present invention;

[0027] Figure 6 This is a schematic diagram of the structure of the guide assembly of the present invention;

[0028] Figure 7 This is a schematic diagram of the connection relationship between the driving component and the pushing component of the present invention;

[0029] Figure 8 for Figure 7 Enlarged view of point A in the middle.

[0030] In the figure: 101, bridge housing; 102, half shaft; 103, steering knuckle; 104, kingpin body; 2, spline; 3, rotating joint; 4, connecting block; 5, kingpin hole; 601, countersunk hole; 602, positioning circular plate; 603, positioning plate; 701, guide hole; 702, guide plate; 801, driving circular plate; 802, driving inclined hole; 901, push tube; 902, push rod; 903, spiral groove; 904, straight groove; 905, push rod; 1001, extrusion tube; 1002, extrusion rod; 1003, spring; 1101, annular dovetail groove; 1102, annular dovetail plate; 1201, locking ring; 1202, locking rod; 1203, inclined surface; 13, oil seal; 1401, shrink hole; 1402, shrink plate. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example 1

[0033] See also Figure 1-Figure 8 The assembly process of a new type of steering drive axle for port AGV vehicle shown in the figure includes the following steps:

[0034] S1. Clean the axle housing (101) and the half shaft (102), remove the oil stains and iron impurities on the surface, and check the installation position of the half shaft (102) in the axle housing (101), confirm that its dimensional accuracy and surface roughness meet the design requirements, and there are no burrs or bumps, apply assembly grease to the journal of the half shaft (102), and install the half shaft (102) into the axle housing (101);

[0035] S2. After the half shaft (102) is assembled, the steering knuckle (103) is cleaned to remove surface impurities, its appearance is checked, and grease is applied again to the inner hole of the journal of the steering knuckle (103) and the journal of the half shaft (102), and then it is mounted on the half shaft (102) and pushed horizontally into the side wall of the axle housing (101);

[0036] S3. After the steering knuckle (103) is assembled, the kingpin body (104) is cleaned and inspected to ensure that the surface finish, cylindricity and dimensional accuracy of the kingpin body (104) meet the design requirements and there is no bending or deformation. Lubricating oil is applied to the surface of the kingpin body (104). Finally, one end of the kingpin body (104) is aligned with the kingpin hole (5) of the steering knuckle (103), and is passed through the kingpin hole (5) of the steering knuckle (103), the kingpin hole (5) of the axle housing (101) and the kingpin hole (5) of the half shaft (102) in sequence.

[0037] S4. Tighten the kingpin body (104).

[0038] See also Figure 3 The assembly process of the steering drive axle for the new type of port AGV vehicle shown in the figure includes an axle housing 101, a half shaft 102, a steering knuckle 103 and a kingpin body 104, which is characterized in that: a side wall of one end of the half shaft 102 is provided with a spline 2, the other end of the half shaft 102 is connected to a connecting block 4 through a rotating joint 3, the steering knuckle 103 is provided with an oil seal 13, the axle housing 101, the half shaft 102 and the connecting block 4 are all provided with a kingpin hole 5, the connecting block 4 is provided with a positioning component for positioning when the half shaft 102 is assembled, and the axle housing 101 is provided with a locking component for locking the kingpin body 104;

[0039] It should be noted here that by adjusting the assembly sequence of the kingpin of the steering drive axle assembly, the steering knuckle 103 does not need to be angularly deflected during assembly so that the kingpin hole 5 of the steering knuckle 103 passes through the kingpin body 104. It only needs to be pushed in horizontally, thereby not only reducing the risk of squeezing and scratching the oil seal 13 of the steering knuckle 103, but also reducing the difficulty of assembling the steering knuckle 103.

[0040] See also Figure 5-Figure 7The positioning assembly shown in the figure includes a countersunk hole 601 opened on the bottom wall of the kingpin hole 5 of the connecting block 4, and the countersunk hole 601 is slidably connected with a positioning circular plate 602. The positioning circular plate 602 is provided with a plurality of positioning plates 603 on one side close to the kingpin hole 5 of the bridge housing 101. Both sides of each positioning plate 603 are provided with arc surfaces, and an arc elastic plate is provided on the arc surface close to the kingpin body 104. The countersunk hole 601 is provided with a driving assembly for driving each positioning plate 603 and a guiding assembly for guiding each positioning plate 603 during the driving process;

[0041] It should be noted here that: by setting the positioning assembly, a positioning effect is provided for the assembly between the half shaft 102 and the bridge housing 101 , thereby facilitating the subsequent assembly of the steering knuckle 103 and the kingpin body 104 .

[0042] See also Figure 6 , the guide assembly shown in the figure includes a guide hole 701 opened on the side wall of the positioning circular plate 602, the guide hole 701 is slidably connected to the guide plate 702, and one end of the guide plate 702 is connected to the positioning plate 603;

[0043] It should be noted here that: by setting the guide assembly, a guiding and limiting function is provided for the movement of each positioning plate 603.

[0044] See also Figure 6 and Figure 7 The driving assembly shown in the figure includes a driving circular plate 801 rotatably connected to the side of the positioning circular plate 602 away from the positioning plate 603, the driving circular plate 801 is provided with a plurality of driving inclined holes 802, one end of each guide plate 702 is slidably connected to the driving inclined hole 802, and the countersunk hole 601 is provided with a pushing assembly for pushing the driving circular plate 801 and an extruding assembly for extruding the driving circular plate 801;

[0045] It should be noted here that: through the setting of the driving assembly, it is convenient to drive each positioning plate 603 to move closer to or away from each other, thereby reducing the interference with the assembly of the cancellation body 104 while supporting and tightening the assembled kingpin body 104.

[0046] See also Figure 7 and Figure 8 The push assembly shown in the figure includes a push tube 901 fixedly connected to the bottom wall of the counterbore 601, and a push rod 902 is slidably connected to the push tube 901. One end of the push rod 902 is connected to the driving circular plate 801. A spiral groove 903 and a straight groove 904 are opened on the side wall of the push rod 902. The opposite ends of the spiral groove 903 and the straight groove 904 are connected. The spiral groove 903 is arranged close to the driving circular plate 801. A push rod 905 is fixedly connected to the inner wall of the push tube 901, and the push rod 905 slides in the straight groove 904 and the spiral groove 903.

[0047] It should be noted here that: through the setting of the pushing component, in the process of the positioning circular plate 602 shrinking into the countersunk hole 601, the pushing rod 902 will be pushed to slide into the pushing tube 901. In the initial stage of the pushing rod 902 sliding into the pushing tube 901, the positioning circular plate 602 will continue to slide vertically into the countersunk hole 601 under the guiding action of the support rod 905 and the straight groove 904. When the positioning circular plate 602 slides a certain distance and each positioning plate 603 has shrunk into the countersunk hole 601, the support rod 905 will be combined with the spiral groove 903 on the side wall of the pushing rod 902, and then under the interaction force between the support rod 905 and the spiral groove 903, the pushing rod 902 will rotate, thereby driving the driving circular plate 801 to rotate.

[0048] See also Figure 6 and Figure 7 The extrusion assembly shown in the figure includes a plurality of extrusion tubes 1001 fixedly connected to the bottom wall of the countersunk hole 601, each extrusion tube 1001 is arranged in a ring array and surrounds the peripheral side of the push tube 901, each extrusion tube 1001 is slidably connected to an extrusion rod 1002, and one end of each extrusion rod 1002 away from the bottom wall of the countersunk hole 601 is connected to the driving circular plate 801 through a rotating assembly, and a spring 1003 is sleeved on the side wall of each extrusion tube 1001, and the two ends of each spring 1003 are respectively connected to the driving circular plate 801 and the bottom wall of the countersunk hole 601;

[0049] It should be noted here that: through the setting of the extrusion assembly, an elastic extrusion force is provided for each positioning plate 603, so that each positioning plate 603 is initially inserted into the kingpin hole 5 of the bridge housing 101, and after the kingpin body 104 is assembled, it can be retracted into the countersunk hole 601, thereby reducing the assembly interference with the cancellation body 104.

[0050] See also Figure 7 The rotating assembly shown in the figure includes an annular dovetail groove 1101 provided on a side of the driving circular plate 801 close to the extrusion rod 1002, the annular dovetail groove 1101 is rotatably connected to an annular dovetail plate 1102, and one end of each extrusion rod 1002 close to the driving circular plate 801 is connected to the annular dovetail plate 1102;

[0051] It should be noted here that: the setting of the rotating assembly provides a guiding and limiting function for driving the rotation of the circular plate 801.

[0052] See also Figure 5 and Figure 6 The connecting block 4 shown in the figure is provided with a contraction assembly for contracting each positioning plate 603, and the contraction assembly includes a contraction hole 1401 opened on the side of the connecting block 4 close to the half shaft 102, and the contraction hole 1401 is slidably connected with a contraction plate 1402, and one end of the contraction plate 1402 is connected to the positioning circular plate 602;

[0053] It should be noted here that: by setting the shrinking assembly, it is convenient for the half-shaft 102 to shrink each positioning plate 603 into the counterbore 601 at the initial assembly stage, thereby facilitating the assembly between the half-shaft 102 and the bridge housing 101.

[0054] See also Figure 3 and Figure 4 The locking assembly shown in the figure includes a locking ring 1201 fixedly connected to both sides of the bridge housing 101, a locking rod 1202 is provided between the two locking rings 1201, and a side of the locking rod 1202 close to the kingpin body 104 is provided with an inclined surface 1203;

[0055] It should be noted here that: through the setting of the locking assembly, the kingpin body 104 is locked and fixed, so that by adjusting the kingpin body 104 from cold installation to normal temperature assembly, the influence of water vapor, condensed water, etc. brought by the cold installation process on the quality of the bridge assembly parts, such as rust, sticking, etc., is reduced. The normal temperature press installation has good versatility, which can not only meet the assembly requirements of this steering drive axle, but also is compatible with the assembly of other platform products. At the same time, the use of cooling equipment for the kingpin body 104 is avoided, thereby reducing the installation cost of the kingpin body 104 while reducing the assembly waiting time, thereby improving the economy and efficiency of the bridge assembly.

[0056] Working principle: When assembling the steering drive axle assembly, first clean the bridge housing 101 and the half shaft 102 to remove the oil, iron filings and other impurities on the surface, and check the installation position of the half shaft 102 in the bridge housing 101 to confirm that its dimensional accuracy and surface roughness meet the design requirements and there are no defects such as burrs and bumps. Then apply an appropriate amount of special assembly grease to the journal position of the half shaft 102, and finally install the half shaft 102 into the bridge housing 101. When installing the half shaft 102 into the bridge housing 101, manually press the retracting plate 1402, and then under the guiding action of the pressing force and the extrusion component, the positioning circular plate 602 will be driven to retract into the countersunk hole 601, and then drive each positioning plate 603 to retract into the countersunk hole 601. After each positioning plate 603 is retracted into the countersunk hole 601, the connecting block 4 at one end of the half shaft 102 can be inserted into the bridge housing 101;

[0057] After the connecting block 4 is inserted into the axle housing 101, the pressure on the contraction plate 1402 is released. At this time, under the elastic action of the extrusion assembly, the positioning circular plate 602 will be pushed to move closer to the axle housing 101, so that each positioning plate 603 is inserted into the kingpin hole 5 on the axle housing 101. Therefore, under the positioning action of each positioning plate 603, a positioning effect is provided for the assembly between the half shaft 102 and the axle housing 101, thereby facilitating the subsequent assembly of the steering knuckle 103 and the kingpin body 104.

[0058] After the half shaft 102 is assembled, the steering knuckle 103 is cleaned to remove the oil, dust and other impurities on the surface, and its appearance quality is checked. A thin layer of assembly grease is applied to the inner hole of the journal of the steering knuckle 103 and the journal position of the half shaft 102, and then it is mounted on the half shaft 102 and pushed horizontally into the side wall of the bridge housing 101. Since the kingpin body 104 has not been assembled yet, when assembling the steering knuckle 103, there is no need to deflect the angle so that the kingpin hole 5 of the steering knuckle 103 passes through the kingpin body 104. It only needs to ensure that it is pushed in horizontally, thereby not only reducing the risk of squeezing and scratching the oil seal 13 of the steering knuckle 103, but also reducing the difficulty of assembling the steering knuckle 103;

[0059] After the steering knuckle 103 is assembled, the kingpin body 104 is cleaned and inspected to ensure that the surface finish, cylindricity and dimensional accuracy of the kingpin body 104 meet the design requirements and there are no defects such as bending and deformation. Then, a layer of rust preventive and an appropriate amount of assembly lubricant are applied to the surface of the kingpin body 104. Finally, one end of the kingpin body 104 is aligned with the kingpin hole 5 of the steering knuckle 103, and the kingpin hole 5 of the steering knuckle 103, the kingpin hole 5 of the axle housing 101 and the kingpin hole 5 of the half shaft 102 are sequentially passed through.

[0060] When the kingpin body 104 is inserted into the kingpin hole 5 of the bridge housing 101, as the kingpin body 104 continues to move, when the kingpin body 104 abuts against each positioning plate 603, each positioning plate 603 will be retracted into the countersunk hole 601 under the action of the driving force, thereby pushing the positioning circular plate 602 to retract into the countersunk hole 601. In the process of the positioning circular plate 602 retracting into the countersunk hole 601, the push rod 902 will be pushed to slide into the push tube 901. In the early stage of the push rod 902 sliding into the push tube 901, the positioning circular plate 602 will continue to slide vertically into the countersunk hole 601 under the guidance of the abutment rod 905 and the straight groove 904. When the positioning circular plate 602 slides a distance, each positioning plate 603 has retracted into the countersunk hole 601, and the abutment rod 905 will abut against the push rod 90 2, and the spiral groove 903 on the side wall of the push rod 905 is matched, and then the push rod 902 is rotated under the interaction force between the push rod 905 and the spiral groove 903, thereby driving the driving circular plate 801 to rotate. In the process of driving the circular plate 801 to rotate, the interaction force between the driving inclined hole 802 and the guide plate 702 and the guiding action of the guide assembly will drive each positioning plate 603 to move away from each other, and in the process of the positioning circular plate 602 continuously moving into the counterbore 601, when one end of the push rod 902 abuts against the bottom wall of the push tube 901, the positioning circular plate 602 will not be able to move. At this time, the kingpin body 104 will abut against the side wall of the positioning circular plate 602, and the arc-shaped elastic plate on one side of each positioning plate 603 will abut against the side wall of the kingpin body 104, so as to support and tighten the kingpin body 104;

[0061] After the kingpin body 104 is assembled, the locking rod 1202 is pressed into the locking ring 1201 on the side wall of the bridge housing 101, and in the process of pressing the locking rod 1202, the inclined surface 1203 of the locking rod 1202 is opposite to the kingpin body 104, and then in the process of pressing the locking rod 1202 into the bridge housing 101, the inclined surface 1203 of the side wall of the locking rod 1202 will be against the side wall of the kingpin body 104, and then under the tight limiting action of the inclined surface 1203, the radial and axial directions of the kingpin body 104 are restricted, thereby achieving the kingpin locking. The installation of the main body 104 is locked, and thus the influence of water vapor, condensed water, etc. on the quality of the bridge assembly parts caused by the cold installation process is reduced by adjusting the main body 104 from cold installation to normal temperature assembly, such as rust, sticking, etc., and the normal temperature press installation has good versatility, which can not only meet the assembly of this steering drive axle, but also be compatible with the assembly of other platform products. At the same time, the use of cooling equipment for the main body 104 is avoided, thereby reducing the installation cost of the main body 104 and reducing the assembly waiting time, thereby improving the economy and efficiency of the bridge assembly.

[0062] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0063] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new type of steering drive axle assembly process for port AGV vehicles, comprising the following steps: S1. Clean the axle housing (101) and the half shaft (102), remove the oil stains and iron impurities on the surface, and check the installation position of the half shaft (102) in the axle housing (101), confirm that its dimensional accuracy and surface roughness meet the design requirements, and there are no burrs or bumps, apply assembly grease to the journal of the half shaft (102), and install the half shaft (102) into the axle housing (101); S2. After the half shaft (102) is assembled, the steering knuckle (103) is cleaned to remove surface impurities, its appearance is checked, and grease is applied again to the inner hole of the journal of the steering knuckle (103) and the journal of the half shaft (102), and then it is mounted on the half shaft (102) and pushed horizontally into the side wall of the axle housing (101); S3. After the steering knuckle (103) is assembled, the kingpin body (104) is cleaned and inspected to ensure that the surface finish, cylindricity and dimensional accuracy of the kingpin body (104) meet the design requirements and there is no bending or deformation. Lubricating oil is applied to the surface of the kingpin body (104). Finally, one end of the kingpin body (104) is aligned with the kingpin hole (5) of the steering knuckle (103), and is passed through the kingpin hole (5) of the steering knuckle (103), the kingpin hole (5) of the axle housing (101) and the kingpin hole (5) of the half shaft (102) in sequence. S4. Tighten the kingpin body (104).

2. According to claim (1), a new type of steering drive axle assembly process for port AGV vehicles comprises an axle housing (101), a half shaft (102), a steering knuckle (103) and a kingpin body (104), characterized in that: A spline (2) is provided on the side wall of one end of the half shaft (102); the other end of the half shaft (102) is connected to a connecting block (4) via a rotating joint (3); the steering knuckle (103) is provided with an oil seal (13); the bridge housing (101), the half shaft (102) and the connecting block (4) are all provided with a kingpin hole (5); the connecting block (4) is provided with a positioning assembly for positioning the half shaft (102) when it is assembled; and the bridge housing (101) is provided with a locking assembly for locking the kingpin body (104).

3. According to claim 2, a new type of steering drive axle assembly process for port AGV vehicles is characterized by: The positioning component includes a countersunk hole (601) opened on the bottom wall of the main pin hole (5) of the connecting block (4), the countersunk hole (601) is slidably connected with a positioning circular plate (602), and a plurality of positioning plates (603) are provided on the side of the positioning circular plate (602) close to the main pin hole (5) of the bridge housing (101), both sides of each positioning plate (603) are provided with arc surfaces, and an arc elastic plate is provided on the arc surface close to the main pin body (104), and the countersunk hole (601) is provided with a driving component for driving each positioning plate (603) and a guiding component for guiding each positioning plate (603) during the driving process.

4. According to claim 3, a new type of steering drive axle assembly process for port AGV vehicles is characterized by: The guide assembly comprises a guide hole (701) formed on the side wall of the positioning circular plate (602), the guide hole (701) being slidably connected to a guide plate (702), and one end of the guide plate (702) being connected to the positioning plate (603).

5. According to claim 4, a new type of steering drive axle assembly process for port AGV vehicles is characterized by: The driving assembly comprises a driving circular plate (801) rotatably connected to a side of the positioning circular plate (602) away from the positioning plate (603); the driving circular plate (801) is provided with a plurality of driving inclined holes (802); one end of each of the guide plates (702) is slidably connected to the driving inclined hole (802); the countersunk hole (601) is provided with a pushing assembly for pushing the driving circular plate (801) and an extrusion assembly for extruding the driving circular plate (801).

6. The assembly process of a new type of steering drive axle for port AGV according to claim 5 is characterized by: The pushing assembly includes a pushing tube (901) fixedly connected to the bottom wall of the countersunk hole (601), the pushing tube (901) being slidably connected to a pushing rod (902), one end of the pushing rod (902) being connected to the driving circular plate (801), a spiral groove (903) and a straight groove (904) being provided on the side wall of the pushing rod (902), the spiral groove (903) and the straight groove (904) being connected at opposite ends, the spiral groove (903) being arranged close to the driving circular plate (801), the inner wall of the pushing tube (901) being fixedly connected to a push rod (905), the push rod (905) sliding in the straight groove (904) and the spiral groove (903).

7. The assembly process of a new type of steering drive axle for port AGV according to claim 6 is characterized by: The extrusion assembly comprises a plurality of extrusion tubes (1001) fixedly connected to the bottom wall of the countersunk hole (601), each of the extrusion tubes (1001) being arranged in a ring array and surrounding the circumference of the push tube (901), each of the extrusion tubes (1001) being slidably connected to an extrusion rod (1002), one end of each of the extrusion rods (1002) away from the bottom wall of the countersunk hole (601) being connected to a driving circular plate (801) via a rotating assembly, and a spring (1003) being sleeved on the side wall of each of the extrusion tubes (1001), and two ends of each of the springs (1003) being respectively connected to the driving circular plate (801) and the bottom wall of the countersunk hole (601).

8. The assembly process of a new type of steering drive axle for port AGV according to claim 7 is characterized by: The rotating assembly comprises an annular dovetail groove (1101) provided on a side of the driving circular plate (801) close to the extrusion rod (1002); the annular dovetail groove (1101) is rotatably connected to an annular dovetail plate (1102); and one end of each extrusion rod (1002) close to the driving circular plate (801) is connected to the annular dovetail plate (1102).

9. The assembly process of a new type of steering drive axle for port AGV according to claim 8 is characterized by: The connecting block (4) is provided with a contraction assembly for contracting each positioning plate (603), and the contraction assembly includes a contraction hole (1401) opened on the side of the connecting block (4) close to the half shaft (102), and the contraction hole (1401) is slidably connected to a contraction plate (1402), and one end of the contraction plate (1402) is connected to the positioning circular plate (602).

10. The assembly process of a new type of steering drive axle for port AGV according to claim 9 is characterized in that: The locking assembly comprises locking rings (1201) fixedly connected to both sides of the bridge housing (101), a locking rod (1202) is provided between the two locking rings (1201), and a slope (1203) is provided on one side of the locking rod (1202) close to the kingpin body (104).

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