Railway freight car axle fully automatic CNC paint and rust removal machine

Abstract

The invention proposes a fully automatic numerical control paint and rust removal machine for axles of railway freight cars, which mainly includes a wheel axle paint and rust removal device and a digital control system. The feeding of the front main brush, rear main brush, left brush and right brush is automatically digitally controlled. When working, the digital control system detects the motor current driving the wire brush to rotate, and feeds back to the digital control system. The digital control system sends instructions to the servo feeding mechanism to realize the automatic advance and retreat of the wire brush, so that the wire brush applies a constant force on the wheel axle, and the paint and rust removal efficiency and quality are high, and no paint stripping agent is required; at the same time, the front main brush and the rear main brush are located on opposite sides of the upper part of the axis of the wheelset shaft body, which can maintain the stability of the wheel axle during paint and rust removal; and the front and rear main brushes, left and right side brushes and the runner are automatically controlled by the digital control system according to the number of wheelsets to be cleaned, which significantly improves the life of the wire brush.

Description

Technical Field

[0001] The invention relates to the field of railway freight car wheel set paint removal and rust removal, in particular to a railway freight car wheel axle fully automatic numerical control paint removal and rust removal machine. Background Art

[0002] When inspecting and repairing railway freight car wheelsets, it is necessary to carry out surface magnetic particle inspection on the wheelsets. According to the inspection requirements, all inspection parts "must expose the basic metal surface", and the wheelset axle body and dust plate seat must be cleaned, stripped of paint and derusted externally.

[0003] There are currently the following issues:

[0004] 1. In the current cleaning, paint stripping and rust removal process of the section repair axle, since the anti-rust varnish on most of the axle surface adheres well, the axle surface must be completely coated with a paint stripper before cleaning, paint stripping and rust removal. The paint stripper is seriously polluted. The paint stripper is a mixture of acid, chlorinated hydrocarbons, ketones, esters, alcohols, benzene series and other solvents. It is highly corrosive, highly volatile, and highly toxic. It seriously pollutes the environment. Especially in winter when the doors and windows are closed, the sour smell in the section repair warehouse is very strong, which can easily cause harm to the health of employees.

[0005] 2. The currently used wheel set paint and rust removal machine uses a swing arm hard wire wheel mechanism and a wheel runner mechanism. The wire wheel is relatively hard. During the wheel set rotation paint and rust removal process, the wheel rim wears out of roundness, and the wheel runner drives the wheel to rotate, which causes radial runout. It is difficult for the wire wheel to apply constant pressure to the axle body to perform continuous and stable paint and rust removal operations.

[0006] At the same time, the runner mechanism is exposed to mechanical particles formed by paint strippers, wire debris, and rust on the shaft due to long-term immersion in water, forming composite sewage that corrodes the bearing seals and shaft seals. At the same time, the wheelset weighing more than one ton also frequently impacts the bearing seat. Under the influence of these two unfavorable factors, the runner bearings, wheels, and seals are quickly damaged and need to be disassembled and replaced in about two months.

[0007] 3. Paint removal and rust removal of wheelset spokes rely on manual grinding, which is time-consuming and labor-intensive, incomplete, and increases the labor intensity of workers. Summary of the invention

[0008] In order to solve the defects and shortcomings of the prior art, the present invention designs and proposes a fully automatic CNC paint and rust removal machine for railway freight car axles with higher paint and rust removal quality. The technical solution is as follows:

[0009] The present invention provides a fully automatic numerically controlled paint and rust removal machine for a railway freight car wheel axle, comprising a wheel axle paint and rust removal device and a digital control system;

[0010] The wheel axle paint and rust removal device comprises a front main brush and a rear main brush, wherein the front main brush and the rear main brush are located on two opposite sides of the wheel set axle body axis;

[0011] The front main brush is connected to a first driving mechanism, a first radial feeding mechanism and a first axial reciprocating driving mechanism, the first driving mechanism is used to drive the front main brush to rotate, the first radial feeding mechanism and the first axial reciprocating driving mechanism are used to drive the front main brush to radially feed and axially reciprocate, the first driving mechanism, the first radial feeding mechanism and the first axial reciprocating driving mechanism are respectively connected to a digital control system to control the radial feeding, axial reciprocating movement and rotation of the front main brush, so as to realize the paint removal and rust removal of the surface of the wheelset shaft body;

[0012] The rear main brush is connected to a third driving mechanism, a third radial feeding mechanism and a third axial reciprocating driving mechanism, the third driving mechanism is used to drive the rear main brush to rotate, the third radial feeding mechanism and the third axial reciprocating driving mechanism are used to drive the radial feeding and axial reciprocating movement of the rear main brush, the third driving mechanism, the third radial feeding mechanism and the third axial reciprocating driving mechanism are respectively connected to a digital control system to control the radial feeding, axial reciprocating movement and rotation of the rear main brush, so as to realize the paint removal and rust removal of the surface of the wheelset shaft body;

[0013] When the front main brush and the rear main brush are radially fed and contact the axle body, the digital control system monitors the driving mechanism. When the current of the driving mechanism reaches the set value, the digital control system controls the axial reciprocating driving mechanism to respectively drive the front main brush and the rear main brush to realize the reciprocating motion of the front main brush and the rear main brush according to the instruction of the digital control system, so as to remove paint and rust from the surface of the wheel axle body. When the current of the driving mechanism fluctuates, the radial feeding mechanism controls the wire brush to advance and retreat precisely according to the instruction of the digital control system, so as to realize the constant pressure of the wire brush and ensure the effect of paint removal and rust removal.

[0014] When the front and rear main brush cleaning wheel pairs reach a preset number, the digital control system controls the front and rear main brushes to rotate in opposite directions for cleaning, so as to increase the life of the brushes.

[0015] As a priority of the above technical solution, the wheel axle paint removal and rust removal device also includes a left brush and a right brush, the left brush is located on the side of the dust plate seat at the left end of the wheel axle, and the right brush is located on the side of the dust plate seat at the right end of the wheel axle;

[0016] The left brush is connected to the second driving mechanism, the second radial feeding mechanism and the second axial reciprocating driving mechanism, the second driving mechanism is used to drive the left brush to rotate, the second radial feeding mechanism and the second axial reciprocating driving mechanism are used to drive the left brush to radially feed and axially reciprocate, the second driving mechanism, the second radial feeding mechanism and the second axial reciprocating driving mechanism are respectively connected to the digital control system to control the radial feeding, axial reciprocating movement and rotation of the left brush, so as to realize the paint removal and rust removal of the dust plate seat surface at the left end of the wheel axle;

[0017] The right brush is connected to a fourth driving mechanism, a fourth radial feeding mechanism and a fourth axial reciprocating driving mechanism, the fourth driving mechanism is used to drive the right brush to rotate, the fourth radial feeding mechanism and the fourth axial reciprocating driving mechanism are used to drive the right brush to radially feed and axially reciprocate, the fourth driving mechanism, the fourth radial feeding mechanism and the fourth axial reciprocating driving mechanism are respectively connected to a digital control system to control the radial feeding, axial reciprocating movement and rotation of the right brush, so as to realize the paint stripping and rust removal of the surface of the dust plate seat at the right end of the wheel axle;

[0018] When the left brush and the right brush are radially fed and contact the dustproof plate, the digital control system monitors the driving mechanism. When the current of the driving mechanism reaches the set value, the digital control system controls the axial reciprocating driving mechanism to respectively drive the left brush and the right brush to realize the reciprocating motion of the left brush and the right brush according to the instruction of the digital control system, so as to remove paint and rust from the surface of the dustproof plate seat. When the current of the driving mechanism fluctuates, the radial feeding mechanism controls the wire brush to advance and retreat precisely according to the instruction of the digital control system, so as to realize the constant pressure of the wire brush and ensure the effect of paint removal and rust removal.

[0019] When the left brush and the right brush cleaning wheel pairs reach a preset number, the digital control system controls the left brush and the right brush to rotate in opposite directions for cleaning, so as to increase the life of the brushes.

[0020] As a priority to the above technical solution, it also includes a wheel feeding device located in front of the wheel axle paint stripping and rust removal device, and the wheel feeding device includes a buffer unit and a wheel pushing unit arranged on one side of the track. The buffer unit is used to position the wheel pair arriving along the track, and the wheel pushing unit is used to push the wheel axle into the next workstation.

[0021] As a priority of the above technical solution, the lower part of the wheel axle paint and rust removal device includes a wheel device, and the wheel device includes a wheel device, a buffer device, and a push wheel device;

[0022] The wheel device comprises a driving roller and a driven roller arranged opposite to each other, the driving roller is connected to a motor reducer, and a wheel pair is accommodated between the driving roller and the driven roller to drive the wheel pair to rotate;

[0023] The buffer device comprises a buffer top shaft, a buffer push wheel is arranged on the buffer top shaft, and the buffer top shaft is connected to a buffer push rod, specifically, one end of the buffer push rod is hinged to the fixed surface through a rotating pin shaft, and the other end is hinged to the buffer push rod, and the buffer top shaft is connected to a buffer cylinder to push the buffer top shaft to move;

[0024] The pushing wheel device includes a discharging top shaft, a discharging top wheel is arranged on the discharging top shaft, and the discharging top shaft is connected to a discharging push rod. Specifically, one end of the discharging push rod is hinged to a fixed surface through a rotating pin shaft, and the other end is hinged to the discharging top wheel. The discharging top shaft is connected to a pushing wheel cylinder to push the discharging top shaft to move.

[0025] As a priority of the above technical solution, the main brushes are respectively arranged on the corresponding main brush swing brackets, each main brush swing bracket is connected to a main brush bracket through a main brush self-aligning swing device, the main brush self-aligning swing device includes a swing shaft, one end of the swing shaft is connected to the main brush swing bracket through a bearing sleeve, and the other end is connected to the main brush bracket.

[0026] As a priority of the above technical solution, a universal rolling bearing is also arranged between the main brush swing bracket and the main brush bracket. The universal rolling bearing is located on the side away from the main brush self-aligning swing device. The two sides of the main brush swing bracket are connected to the balance adjustment screw through a disc spring.

[0027] As a priority of the above technical solution, the digital control system is connected to the wheel rotor. When the front and rear main brushes and the left and right side brush cleaning wheel pairs reach a preset number, the digital control system controls the wheel rotor to rotate in opposite directions to increase the life of the brushes.

[0028] As a priority of the above technical solution, the buffer unit includes a buffer unit cylinder, a buffer roller is provided at the power output end of the buffer unit cylinder, and the buffer roller is connected to a buffer push rod, specifically, one end of the buffer push rod is hinged to the fixed surface through a rotating pin, and the other end is hinged to the rotating shaft of the buffer roller;

[0029] The push wheel unit includes a push wheel unit cylinder, a push wheel roller is provided at the power output end of the push wheel unit cylinder, and the push wheel roller is connected to a push wheel push rod. Specifically, one end of the push wheel push rod is hinged to the fixed surface through a rotating pin, and the other end is hinged to the rotating shaft of the push wheel roller.

[0030] As a priority of the above technical solution, the outer circles of the active roller and the driven roller adopt a V-shaped structure.

[0031] As a priority of the above technical solution, the front main brush and the rear main brush are located on the upper parts of the two opposite sides of the wheelset shaft axis, or in the horizontal direction of the two opposite sides of the wheelset shaft axis.

[0032] The present invention proposes a fully automatic numerically controlled paint and rust removal machine for a railway freight car axle, and the working process is: wheel feeding - axle positioning - axle rotation - wire brush rapid feeding - paint and rust removal feeding and maintenance - paint and rust removal completion and rapid retraction. The feeding of the front main brush, rear main brush, left brush and right brush is automatically digitally controlled. During operation, the digital control system detects the motor current driving the wire brush to rotate and feeds back to the digital control system. The digital control system sends instructions to the servo feeding mechanism to realize the automatic advancement and retreat of the wire brush, so that the wire brush applies a constant force on the axle, the paint and rust removal efficiency and quality are high, and no paint stripping agent is required; at the same time, the front main brush and the rear main brush are located on opposite sides of the upper part of the axis of the wheelset shaft body, which can maintain the stability of the wheelset during paint and rust removal; and the front and rear main brushes, left and right side brushes and the wheel runner are automatically controlled by the digital control system according to the number of wheelsets to be cleaned, which significantly improves the life of the wire brush.

[0033] The present invention proposes a fully automatic CNC paint and rust removal machine for a railway freight car axle. The arrangement of the machine solves the space limitation of multiple workstations crowded together, introduces the principle and idea of ​​CNC machine tools, and replaces the use of a counterweight to achieve contact between a wire brush and an axle body with a CNC machine tool-style servo control. The current of a wire brush driving motor is used as a command for the advance and retreat of the wire brush, thereby ensuring a constant pressure and a constant fit between the wire brush and the axle body. The paint and rust removal effects are uniform, no paint stripping agent is needed, and the paint and rust removal efficiency is high.

[0034] Economic benefits;

[0035] 1. Eliminate the paint stripper application process, no need to purchase paint strippers, save car repair costs, and reduce workers' labor intensity.

[0036] 2. Servo feed can ensure that the wire brush applies constant force to the shaft body, reduce wire breakage, and increase the service life of the wire brush, with an estimated annual savings of 30%.

[0037] 3. Two axle paint and rust removal machines work at the same time, greatly improving the paint and rust removal efficiency.

[0038] Savings calculation:

[0039] According to the statistics in 2016, Baotou Company consumed 218,000 yuan of paint strippers and 219,100 yuan of wire wheels. The new equipment has eliminated the paint stripper process. The newly developed wire brush uses a flexible abrasive brush, so the wear degree is estimated to be 30% less than that of the old brush.

[0040] For paint strippers and wire wheels alone, the annual savings are: 218,000 + 219,100 × 30% = 283,730

[0041] Social benefits:

[0042] 1. Eliminate on-site air pollution and environmental pollution.

[0043] 2. Reduce material consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0045] Figure 1 It is a structural schematic diagram of a fully automatic CNC paint and rust removal machine for a railway freight car axle provided in an embodiment of the present invention;

[0046] Figure 2 1. It is a schematic structural diagram of a wheel axle paint and rust removal device provided in an embodiment of the present invention;

[0047] Figure 3 is a schematic structural diagram of a wheel feed device provided in an embodiment of the present invention;

[0048] Figure 4 is a schematic diagram of the structure of a wheel provided in an embodiment of the present invention;

[0049] Figure 5 is a schematic structural diagram of a wheel drive device provided in an embodiment of the present invention;

[0050] Figure 6 is a schematic structural diagram of a buffer device provided in an embodiment of the present invention;

[0051] Figure 7 is a schematic structural diagram of a push wheel device provided in an embodiment of the present invention;

[0052] Figure 8 It is a structural schematic diagram of the main and side brush servo transmission parts provided in an embodiment of the present invention;

[0053] Fig. 9 is a structural schematic diagram of a main brush driving part provided in an embodiment of the present invention;

[0054] Fig.10 is a schematic structural diagram of a side brush driving part provided in an embodiment of the present invention;

[0055] Fig.11 1. It is a structural schematic diagram of the connection state of the main brush self-aligning swing device provided in an embodiment of the present invention;

[0056] Fig.12 yes Fig.11 Side view of

[0057] Fig.13 yes Fig.11 A top view of

[0058] Fig.14 This is a circuit schematic diagram of a fully automatic numerically controlled paint and rust removal machine for a railway freight car axle provided in an embodiment of the present invention;

[0059] Figure numbers: 1 wheel feed device, 3 wheel axle paint and rust removal machine (including two parts arranged symmetrically), 4 No. 1 wheel, 1.1 guide rail, 1.2 push wheel unit, 1.3 buffer unit, 3.1 main brush transverse air-liquid damping cylinder, 3.2 main brush slide rail part, 3.3 main brush servo transmission, 3.4 main brush drive part, 3.5 side brush transverse cylinder, 3.6 side brush slide rail part, 3.7 side brush servo transmission, 3.8 side brush drive part, 3.3.1 servo motor with brake, 3.3.2 reducer, 3.3.3 coupling, 3.3.4 ball screw, 3.3.5 slide, 3.3.6 slide base, 3.4 main brush drive part, 3.4.1 main brush bracket, 3.4.2 main brush bearing seat, 3.4.3 Main brush drive motor, 3.4.4 main brush, 3.4.5 main brush self-aligning swing device, 3.4.6 main brush swing bracket, 3.4.7 universal rolling bearing, 3.4.8 balance adjustment screw, 3.8 side brush drive part, 3.8.1 side brush bearing seat, 3.8.2 side brush drive motor, 3.8.3 side brush, 4.1 rotary wheel drive device, 4.2 buffer device, 4.3 push wheel device, 4.1.1 motor with reducer, 4.1.2 coupling, 4.1.3 active roller, 4.1.4 passive roller, 4.2.1 buffer cylinder, 4.2.2 buffer push rod, 4.2.3 buffer top shaft, 4.2.4 rotating pin shaft, 4.2.5 buffer push wheel, 4.3.1 cylinder, 4.3.2 discharge top shaft, 4.3.3 discharge push rod, 4.3.4 rotating pin shaft, 4.3.5 discharge top wheel. DETAILED DESCRIPTION

[0060] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0061] The invention discloses a fully automatic numerically controlled paint and rust removal machine for a railway freight car wheel axle, comprising a wheel axle paint and rust removal device and a digital control system;

[0062] The wheel axle paint stripping and rust removal device includes a front main brush, a left brush, a rear main brush and a right brush. The front main brush and the rear main brush are located on opposite sides of the wheel set axle body axis. The front main brush and the rear main brush can be located on the upper part of the opposite sides of the wheel set axle body axis, or in the horizontal direction of the opposite sides of the wheel set axle body axis. The left brush is located on the dust plate seat side of the left end of the wheel axle, and the right brush is located on the dust plate seat side of the right end of the wheel axle;

[0063] The front main brush is connected to a first driving mechanism, a first radial feeding mechanism and a first axial reciprocating driving mechanism, the first driving mechanism is used to drive the front main brush to rotate, the first radial feeding mechanism and the first axial reciprocating driving mechanism are used to drive the front main brush to radially feed and axially reciprocate, the first driving mechanism, the first radial feeding mechanism and the first axial reciprocating driving mechanism are respectively connected to a digital control system to control the radial feeding, axial reciprocating movement and rotation of the front main brush, so as to realize the paint removal and rust removal of the surface of the wheelset shaft body;

[0064] The left brush is connected to the second driving mechanism, the second radial feeding mechanism and the second axial reciprocating driving mechanism, the second driving mechanism is used to drive the left brush to rotate, the second radial feeding mechanism and the second axial reciprocating driving mechanism are used to drive the left brush to radially feed and axially reciprocate, the second driving mechanism, the second radial feeding mechanism and the second axial reciprocating driving mechanism are respectively connected to the digital control system to control the radial feeding, axial reciprocating movement and rotation of the left brush, so as to realize the paint removal and rust removal of the dust plate seat surface at the left end of the wheel axle;

[0065] The rear main brush is connected to a third driving mechanism, a third radial feeding mechanism and a third axial reciprocating driving mechanism, the third driving mechanism is used to drive the rear main brush to rotate, the third radial feeding mechanism and the third axial reciprocating driving mechanism are used to drive the radial feeding and axial reciprocating movement of the rear main brush, the third driving mechanism, the third radial feeding mechanism and the third axial reciprocating driving mechanism are respectively connected to a digital control system to control the radial feeding, axial reciprocating movement and rotation of the rear main brush, so as to realize the paint removal and rust removal of the surface of the wheelset shaft body;

[0066] The right brush is connected to a fourth driving mechanism, a fourth radial feeding mechanism and a fourth axial reciprocating driving mechanism, the fourth driving mechanism is used to drive the right brush to rotate, the fourth radial feeding mechanism and the fourth axial reciprocating driving mechanism are used to drive the right brush to radially feed and axially reciprocate, the fourth driving mechanism, the fourth radial feeding mechanism and the fourth axial reciprocating driving mechanism are respectively connected to a digital control system to control the radial feeding, axial reciprocating movement and rotation of the right brush, so as to realize the paint stripping and rust removal of the surface of the dust plate seat at the right end of the wheel axle;

[0067] When the brush radially feeds and contacts the shaft body and the dustproof plate, the digital control system monitors the driving mechanism. When the current of the driving mechanism reaches the set value, the digital control system controls the axial reciprocating driving mechanism to respectively drive the main brush and the side brush to realize the reciprocating motion of the main brush and the side brush according to the instruction of the digital control system, so as to remove paint and rust from the surface of the shaft body and the dustproof plate. When the current of the driving mechanism fluctuates, the radial feeding mechanism controls the wire brush to advance and retreat precisely according to the instruction of the digital control system, so as to realize the constant pressure of the wire brush and ensure the effect of paint removal and rust removal.

[0068] When the front and rear main brushes and the left and right side brushes cleaning wheel pairs reach a preset number, the digital control system controls the front and rear main brushes and the left and right side brushes to rotate in opposite directions for cleaning, so as to increase the life of the brushes.

[0069] The wheel-pushing device further comprises a wheel-feeding device located in front of the wheel-axle paint stripping and rust removal device, the wheel-feeding device comprising a buffer unit and a wheel-pushing unit arranged on one side of the track, the buffer unit being used to position the wheel pair arriving along the track, the wheel-pushing unit being used to push the wheel-axle into the next workstation, the buffer unit comprising a buffer unit cylinder, a buffer roller being arranged at the power output end of the buffer unit cylinder, the buffer roller being connected to a buffer push rod, specifically, one end of the buffer push rod being hinged to a fixed surface via a rotating pin, and the other end being hinged to the rotating shaft of the buffer roller, the wheel-pushing unit comprising a wheel-pushing unit cylinder, a push wheel roller being arranged at the power output end of the push wheel unit cylinder, the push wheel roller being connected to a push wheel push rod, specifically, one end of the push wheel push rod being hinged to a fixed surface via a rotating pin, and the other end being hinged to the rotating shaft of the push wheel roller.

[0070] The lower part of the wheel axle paint and rust removal device includes a wheel device, and the wheel device includes a wheel device, a buffer device, and a push wheel device;

[0071] The wheel device comprises a driving roller and a driven roller arranged opposite to each other, the outer circles of the driving roller and the driven roller adopt a V-shaped structure, the driving roller is connected to a motor reducer, and a wheel pair is accommodated between the driving roller and the driven roller to drive the wheel pair to rotate;

[0072] The buffer device comprises a buffer top shaft, a buffer push wheel is arranged on the buffer top shaft, and the buffer top shaft is connected to a buffer push rod, specifically, one end of the buffer push rod is hinged to the fixed surface through a rotating pin shaft, and the other end is hinged to the buffer push rod, and the buffer top shaft is connected to a buffer cylinder to push the buffer top shaft to move;

[0073] The pushing wheel device includes a discharging top shaft, a discharging top wheel is arranged on the discharging top shaft, and the discharging top shaft is connected to a discharging push rod. Specifically, one end of the discharging push rod is hinged to a fixed surface through a rotating pin shaft, and the other end is hinged to the discharging top wheel. The discharging top shaft is connected to a pushing wheel cylinder to push the discharging top shaft to move.

[0074] The main brushes are respectively arranged on the main brush swing brackets corresponding thereto, and each main brush swing bracket is connected to a main brush bracket through a main brush self-aligning swing device, and the main brush self-aligning swing device comprises a swing shaft, one end of the swing shaft is connected to the main brush swing bracket through a bearing sleeve, and the other end is connected to the main brush bracket. A universal rolling bearing is also arranged between the main brush swing bracket and the main brush bracket, and the universal rolling bearing is located on the side away from the main brush self-aligning swing device, and the two sides of the main brush swing bracket are connected to the balance adjustment screw through a disc spring.

[0075] The digital control system is connected to the wheel runner. When the front and rear main brushes and the left and right side brush cleaning wheel pairs reach a preset number, the digital control system controls the wheel runner to rotate in opposite directions to increase the life of the brushes.

[0076] Specifically, the front main brush radial feed mechanism and the rear main brush radial feed mechanism are 3.3 main brush servo transmissions respectively arranged on the opposite sides of the wheelset axle axis, and the left brush radial feed mechanism and the right brush radial feed mechanism are 3.7 side brush servo transmissions respectively arranged on one side of the dust plate seat at both ends of the wheel axle. The 3.3 main brush servo transmission has the same structure as the 3.7 side brush servo transmission, including a 3.3.1 servo motor with a brake, and the servo motor with a brake is connected to a 3.3.4 ball screw through a 3.3.2 reducer and a 3.3.3 coupling, and the ball screw is arranged on a 3.3.6 slide base, and a 3.3.5 slide is arranged on the ball screw. The front main brush driving part and the rear main brush driving part are respectively the 3.4 main brush driving part, the 3.4 main brush driving part includes the 3.4.1 main brush bracket, the 3.4.2 main brush bearing seat, the 3.4.3 main brush driving motor, at least one 3.4.4 main brush, and the 3.4.5 main brush self-aligning swing device, the 3.4.1 main brush bracket is connected to the corresponding ball screw slide of the front main brush radial feed mechanism and the rear main brush radial feed mechanism to make the main brush move radially. The left brush driving part and the right brush driving part are respectively the 3.8 side brush driving part, the 3.8 side brush driving part includes the side brush bracket, the 3.8.1 side brush bearing seat, the 3.8.2 side brush driving motor, and the 3.8.3 side brush, the side brush bracket is connected to the corresponding ball screw slide of the left brush radial feed mechanism and the right brush radial feed mechanism to make the side brush move radially.

[0077] The 3.3 main brush servo drive and 3.7 side brush servo drive are respectively arranged on the 3.2 main brush slide rail part and 3.6 side brush slide rail part through the 3.3.6 slide base. The 3.2 main brush slide rail part and 3.6 side brush slide rail part are respectively arranged on the guide rail, and the 3.2 main brush slide rail part and 3.6 side brush slide rail part are respectively connected to the 3.1 main brush transverse air-liquid damping cylinder and the 3.5 side brush transverse air cylinder (i.e., the axial reciprocating drive mechanism).

[0078] After the main brush contacts the shaft body, the main brush self-aligning swing device 3.4.5 can automatically adjust the center line of the main brush to be parallel to the center line of the axle, so as to achieve full contact and fit between the main brush and the axle, wherein the main brush is arranged on the main brush swing bracket 3.4.6, and one end of the swing shaft of the main brush self-aligning swing device is connected to the main brush swing bracket through a bearing sleeve, and the other end is connected to the main brush bracket 3.4.1. A universal rolling bearing 3.4.7 is also arranged between the main brush swing bracket and the main brush bracket, and the universal rolling bearing is located on the side away from the main brush self-aligning swing device, and the two sides of the main brush swing bracket are connected to the 3.4.8 balance adjustment screws through disc springs.

[0079] During operation, the wheel axle to be stripped of paint and rust arrives at the wheel entry device along the track, and the 1.3 buffer unit of the wheel entry device positions the wheel axle. When ready, the wheel axle is pushed into the runner by the 1.2 wheel pusher unit at the wheel entry device, and the 4.2 buffer device of the runner positions the wheel axle. At this time, the wheel axle is on the runner drive device, supported by the 4.1.3 active roller and the 4.1.4 passive roller, and the 4.1.1 motor with reducer is started to drag the wheel axle to rotate.

[0080] 3.4 The main brush drive part and 3.8 The side brush drive part are started, and the main brush and the side brush rotate. After the main brush servo drive 3.3 and the side brush servo drive 3.7 drive the wire brush to contact the axle body, the digital control system monitors the main brush and the side brush motors. When the current reaches the set value, the digital control system controls the main brush transverse gas-liquid damping cylinder 3.1 and the side brush transverse cylinder 3.5 to drive the main brush slide rail part 3.2 and the side brush slide rail part 3.6 to realize the reciprocating motion of the main brush and the side brush according to the instructions of the digital control system, and remove the paint and rust on both sides of the wheel axle body.

[0081] When the current of the main brush motor and the side brush motor fluctuates, the respective servo drive systems control the wire brushes to move forward and backward according to the instructions of the digital control system, thereby achieving a constant pressure of the wire brushes to ensure the paint and rust removal effect. After the paint and rust removal of the axle body is completed, the main brush and the side brushes stop running, and the digital control system quickly resets them through the servo drive system, waiting for the paint and rust removal of the next wheelset to begin.

[0082] The wheel driving device of the wheel machine stops rotating, 4.3 the wheel pushing device starts, and the discharge top wheel pushes the wheel shaft to the next station.

[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fully automatic CNC paint and rust removal machine for railway freight car axles, characterized in that: It includes a wheel axle paint and rust removal device and a digital control system; The wheel axle paint and rust removal device comprises a front main brush and a rear main brush, wherein the front main brush and the rear main brush are located on two opposite sides of the wheel set axle body axis; The front main brush is connected to a first driving mechanism, a first radial feeding mechanism and a first axial reciprocating driving mechanism, the first driving mechanism is used to drive the front main brush to rotate, the first radial feeding mechanism and the first axial reciprocating driving mechanism are used to drive the front main brush to radially feed and axially reciprocate, the first driving mechanism, the first radial feeding mechanism and the first axial reciprocating driving mechanism are respectively connected to a digital control system to control the radial feeding, axial reciprocating movement and rotation of the front main brush, so as to realize the paint removal and rust removal of the surface of the wheelset shaft body; The rear main brush is connected to a third driving mechanism, a third radial feeding mechanism and a third axial reciprocating driving mechanism, the third driving mechanism is used to drive the rear main brush to rotate, the third radial feeding mechanism and the third axial reciprocating driving mechanism are used to drive the radial feeding and axial reciprocating movement of the rear main brush, the third driving mechanism, the third radial feeding mechanism and the third axial reciprocating driving mechanism are respectively connected to a digital control system to control the radial feeding, axial reciprocating movement and rotation of the rear main brush, so as to realize the paint removal and rust removal of the surface of the wheelset shaft body; When the front main brush and the rear main brush are radially fed and contact the axle body, the digital control system monitors the driving mechanism. When the current of the driving mechanism reaches the set value, the digital control system controls the axial reciprocating driving mechanism to respectively drive the front main brush and the rear main brush to realize the reciprocating motion of the front main brush and the rear main brush according to the instruction of the digital control system, so as to remove paint and rust from the surface of the wheel axle body. When the current of the driving mechanism fluctuates, the radial feeding mechanism controls the wire brush to advance and retreat precisely according to the instruction of the digital control system, so as to realize the constant pressure of the wire brush and ensure the effect of paint removal and rust removal. When the front and rear main brush cleaning wheel pairs reach a preset number, the digital control system controls the front and rear main brushes to rotate in opposite directions for cleaning, so as to increase the life of the brushes.

2. The fully automatic CNC paint and rust removal machine for railway freight car axles according to claim 1 is characterized in that: The wheel axle paint removal and rust removal device also includes a left brush and a right brush, the left brush is located on one side of the dust plate seat at the left end of the wheel axle, and the right brush is located on one side of the dust plate seat at the right end of the wheel axle; The left brush is connected to the second driving mechanism, the second radial feeding mechanism and the second axial reciprocating driving mechanism, the second driving mechanism is used to drive the left brush to rotate, the second radial feeding mechanism and the second axial reciprocating driving mechanism are used to drive the left brush to radially feed and axially reciprocate, the second driving mechanism, the second radial feeding mechanism and the second axial reciprocating driving mechanism are respectively connected to the digital control system to control the radial feeding, axial reciprocating movement and rotation of the left brush, so as to realize the paint removal and rust removal of the dust plate seat surface at the left end of the wheel axle; The right brush is connected to a fourth driving mechanism, a fourth radial feeding mechanism and a fourth axial reciprocating driving mechanism, the fourth driving mechanism is used to drive the right brush to rotate, the fourth radial feeding mechanism and the fourth axial reciprocating driving mechanism are used to drive the right brush to radially feed and axially reciprocate, the fourth driving mechanism, the fourth radial feeding mechanism and the fourth axial reciprocating driving mechanism are respectively connected to a digital control system to control the radial feeding, axial reciprocating movement and rotation of the right brush, so as to realize the paint stripping and rust removal of the surface of the dust plate seat at the right end of the wheel axle; When the left brush and the right brush are radially fed and contact the dustproof plate, the digital control system monitors the driving mechanism. When the current of the driving mechanism reaches the set value, the digital control system controls the axial reciprocating driving mechanism to respectively drive the left brush and the right brush to realize the reciprocating motion of the left brush and the right brush according to the instruction of the digital control system, so as to remove paint and rust from the surface of the dustproof plate seat. When the current of the driving mechanism fluctuates, the radial feeding mechanism controls the wire brush to advance and retreat precisely according to the instruction of the digital control system, so as to realize the constant pressure of the wire brush and ensure the effect of paint removal and rust removal. When the left brush and the right brush cleaning wheel pairs reach a preset number, the digital control system controls the left brush and the right brush to rotate in opposite directions for cleaning, so as to increase the life of the brushes.

3. The fully automatic CNC paint and rust removal machine for railway freight car axles according to claim 1 is characterized in that: It also includes a wheel feed device located in front of the wheel axle paint stripping and rust removal device, and the wheel feed device includes a buffer unit and a wheel pusher unit arranged on one side of the track. The buffer unit is used to position the wheel pair arriving along the track, and the wheel pusher unit is used to push the wheel axle into the next workstation.

4. The fully automatic CNC paint and rust removal machine for railway freight car axles according to claim 1 or 2, characterized in that: The lower part of the wheel axle paint and rust removal device includes a wheel device, and the wheel device includes a wheel device, a buffer device, and a push wheel device; The wheel device comprises a driving roller and a driven roller arranged opposite to each other, the driving roller is connected to a motor reducer, and a wheel pair is accommodated between the driving roller and the driven roller to drive the wheel pair to rotate; The buffer device comprises a buffer top shaft, a buffer push wheel is arranged on the buffer top shaft, and the buffer top shaft is connected to a buffer push rod, specifically, one end of the buffer push rod is hinged to the fixed surface through a rotating pin shaft, and the other end is hinged to the buffer push rod, and the buffer top shaft is connected to a buffer cylinder to push the buffer top shaft to move; The pushing wheel device includes a discharging top shaft, a discharging top wheel is arranged on the discharging top shaft, and the discharging top shaft is connected to a discharging push rod. Specifically, one end of the discharging push rod is hinged to a fixed surface through a rotating pin shaft, and the other end is hinged to the discharging top wheel. The discharging top shaft is connected to a pushing wheel cylinder to push the discharging top shaft to move.

5. The fully automatic CNC paint and rust removal machine for railway freight car axles according to claim 1 is characterized in that: The main brushes are respectively arranged on the corresponding main brush swing brackets, and each main brush swing bracket is connected to a main brush bracket through a main brush self-aligning swing device. The main brush self-aligning swing device includes a swing shaft, one end of the swing shaft is connected to the main brush swing bracket through a bearing sleeve, and the other end is connected to the main brush bracket.

6. The fully automatic CNC paint and rust removal machine for railway freight car axles according to claim 5 is characterized in that: A universal rolling bearing is also arranged between the main brush swing bracket and the main brush bracket. The universal rolling bearing is located on a side away from the main brush self-aligning swing device. Both sides of the main brush swing bracket are connected to balance adjustment screws through disc springs.

7. The fully automatic CNC paint and rust removal machine for railway freight car axles according to claim 4 is characterized in that: The digital control system is connected to the wheel rotor. When the front and rear main brushes and / or left and right side brush cleaning wheel pairs reach a preset number, the digital control system controls the wheel rotor to rotate in opposite directions to increase the life of the brushes.

8. The fully automatic CNC paint and rust removal machine for railway freight car axles according to claim 3 is characterized in that: The buffer unit comprises a buffer unit cylinder, a buffer roller is arranged at the power output end of the buffer unit cylinder, and the buffer roller is connected to a buffer push rod, specifically, one end of the buffer push rod is hinged to the fixed surface through a rotating pin, and the other end is hinged to the rotating shaft of the buffer roller; The push wheel unit includes a push wheel unit cylinder, a push wheel roller is provided at the power output end of the push wheel unit cylinder, and the push wheel roller is connected to a push wheel push rod. Specifically, one end of the push wheel push rod is hinged to the fixed surface through a rotating pin, and the other end is hinged to the rotating shaft of the push wheel roller.

9. The fully automatic CNC paint and rust removal machine for railway freight car axles according to claim 4 is characterized in that: The outer circles of the active roller and the driven roller adopt a V-shaped structure.

10. The fully automatic CNC paint and rust removal machine for railway freight car axles according to claim 1 is characterized in that: The front main brush and the rear main brush are located at the upper parts of the two sides opposite to the axis of the wheelset shaft body, or in the horizontal direction of the two sides opposite to the axis of the wheelset shaft body.

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