Heavy commercial vehicle wheelset bolt floating press fitting device

Abstract

The application discloses a heavy commercial vehicle wheel set bolt floating press fitting device, which comprises a supporting table, a press head, a press head floating device, a transmission cabinet, a power source and an electrical control system. A speed reducer and a hydraulic sliding mechanism are arranged in the transmission cabinet, and the power source and the electrical control system are mounted on the outer wall of the transmission cabinet. The output end of the power source is connected with the speed reducer, the speed reducer is connected with the hydraulic sliding mechanism, a vertical push rod is slidably connected to the hydraulic sliding mechanism, the lower end of the push rod is floatingly connected with the press head through the press head floating device, and a press fitting table is mounted on the supporting table. During work, a to-be-press-fitted hub is placed on the press fitting table, bolts are placed in each bolt hole of the to-be-press-fitted hub, the electrical control system controls the power source to start, drives the push rod and the press head floating device to move downward, and the press head press fits the bolts on the to-be-press-fitted hub. The device replaces the traditional manual copper hammer percussion assembly, realizes automatic press fitting of wheel set bolts, and improves the assembly quality and efficiency of the wheel set.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wheel assembly of wheeled vehicles, in particular to a heavy commercial vehicle wheel set bolt floating press fitting device. BACKGROUND

[0002] Wheel set is an important component of the traveling mechanism of wheeled vehicles, which is mainly used to support the load of the vehicle so that the vehicle can travel on the ground. Assembling a high-quality wheel set can improve the reliability and safety of the vehicle when it is off-road, avoid the danger of bolt fracture and even tire falling off when encountering a larger road impact, and is of great significance to improve the passability and safety of the vehicle.

[0003] Reference Figure 1 In the assembly process, it is required that there is no gap between the tire bolt and the hub after assembly. Since the interference amount of the tire bolt joint part is large (about 0.35mm), the manual copper hammer knocking method for assembly is easy to cause the bolt to be not in place, and the labor intensity is large, the efficiency is low, and there is a safety hazard of bolt splashing.

[0004] Therefore, it is urgent to design a wheel set bolt press fitting device which can solve the above problems. SUMMARY

[0005] The purpose of the present application is to provide a heavy commercial vehicle wheel set bolt floating press fitting device to solve the problems in the prior art.

[0006] The technical scheme adopted to achieve the purpose of the present application is as follows: a heavy commercial vehicle wheel set bolt floating press fitting device, comprising a support table, a press head, a press head floating device, a transmission cabinet, a power source and an electrical control system.

[0007] The support table and the transmission cabinet are both installed on a base plate, a reduction machine and a hydraulic sliding mechanism are arranged in the transmission cabinet, and the power source and the electrical control system are both installed on the outer wall of the transmission cabinet.

[0008] The output end of the power source is connected with the reduction machine, the reduction machine is connected with the hydraulic sliding mechanism, a vertical push rod is slidably connected on the hydraulic sliding mechanism, the lower end of the push rod is floatingly connected with the press head through the press head floating device, the press head is located directly above the support table, and a press fitting table is installed on the support table.

[0009] When working, the to-be-press-fitted hub is placed on the press fitting table, a bolt is placed in each bolt hole of the to-be-press-fitted hub, the electrical control system controls the power source to start, drives the push rod and the press head floating device to move downward, and the press head press-fits the bolt on the to-be-press-fitted hub.

[0010] Further, the pressure head floating device comprises a floating device body and two side plates, the upper surface of the floating device body is connected with the lower end of the push rod, and the two vertical side plates are fixed on the lower surface of the floating device body.

[0011] The pressure head comprises a pressure head body and two pressure rods, the pressure head body is located between the two side plates, a coupling bolt is fixed on the pressure head body, the two ends of the coupling bolt extend out of the pressure head body and respectively pass through the strip-shaped holes of the two side plates, and a plurality of springs are connected between the pressure head body and the floating device body.

[0012] The upper ends of the two vertical pressure rods are fixed on the lower surface of the pressure head body, in operation, the lower ends of the two pressure rods respectively apply loads to two bolts of the hub to be pressed, and the connecting line of the bolt holes where the two bolts are located passes through the center of the hub to be pressed, the coupling bolt and the side plate move relative to each other in the vertical direction, and the springs are compressed.

[0013] Further, the inside of the pressing table is hollow and a motor is installed therein, the output end of the motor extends out of the pressing table and is connected with a horizontal hub support plate, a plurality of through holes for bolts to pass through are formed in the hub support plate.

[0014] In operation, the hub to be pressed is placed on the hub support plate, a plurality of bolt holes on the hub to be pressed are respectively aligned with a plurality of through holes on the hub support plate and are in communication with the inside of the pressing table, and the two pressure rods first complete the pressing of a pair of bolts. The electrical control system controls the motor inside the pressing table to rotate by a set angle to press the next pair of bolts. Repeat the rotation and pressing until all the bolts of the hub to be pressed are pressed.

[0015] Further, the hydraulic sliding mechanism comprises an electromagnetic valve, a hydraulic pipeline, an oil pump, a hydraulic cylinder and a pressure displacement sensor which are installed in the cabinet body of the transmission cabinet.

[0016] The oil pump is connected with the power source, the outlet of the oil pump is connected with the electromagnetic valve through the hydraulic pipeline, the electromagnetic valve is connected with the upper and lower ends of the hydraulic cylinder through two pipelines respectively, the pressure displacement sensor is installed on the hydraulic cylinder, and the output end of the hydraulic cylinder is connected with the push rod.

[0017] In operation, the power source and the speed reducer transmit power to the oil pump, the oil pump transmits the hydraulic oil in the oil tank to the electromagnetic valve through the hydraulic pipeline, controls the direction through the electromagnetic valve, transmits the hydraulic oil to the upper end or the lower end of the hydraulic cylinder, and the hydraulic sliding mechanism moves up and down.

[0018] Further, the electric control system comprises a host computer and a display screen, and the host computer controls the power source and the internal motor of the press-fitting table during work, the power source transmits power to the push rod through the hydraulic sliding mechanism, and the motor of the press-fitting table drives the to-be-press-fitted hub to rotate by a set angle. The stress information and displacement information monitored by the pressure displacement sensor are transmitted to the host computer for analysis, and the analysis result is displayed through the display screen.

[0019] Further, the power source is a hydraulic cylinder.

[0020] The technical effect of the present application is self-evident. The device of the present application uses a press-fitting machine for press fitting, which can not only improve the press fitting efficiency and reduce the labor intensity of workers, but also quantitatively analyze the press fitting quality from the "pressure-displacement" curve, and provide a more accurate basis for finally judging whether the press fitting is qualified or not. The problems of the traditional manual knocking of bolts, such as the great influence of human factors on the press fitting quality, time-consuming and labor-intensive, and the safety hazard of knocking, are solved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a schematic view of the assembly of the hub and the bolt;

[0022] Figure 2 is a schematic view of the floating press fitting device of the present application;

[0023] Figure 3 is Figure 2 is a partial enlarged view of the floating connection part;

[0024] Figure 4 is an internal structure diagram of the transmission cabinet.

[0025] In the figure: support table 1, press head 2, connecting bolt 201, press head floating device 3, spring 301, transmission cabinet 4, cabinet body 401, electromagnetic valve 402, hydraulic pipeline 403, oil pump 404, hydraulic cylinder 405, pressure displacement sensor 406, power source 5, electric control system 6, base plate 7, push rod 8, press fitting table 9, hub support plate 10 and to-be-press-fitted hub 11. DETAILED DESCRIPTION

[0026] The present application will be further described below in conjunction with examples, but should not be understood as limiting the above-mentioned subject matter of the present application to the following examples. According to ordinary technical knowledge and conventional means in the art, various substitutions and modifications can be made without departing from the above-mentioned technical idea of the present application, and all of them should be included in the protection scope of the present application.

[0027] Example 1:

[0028] Referring to Figure 2The embodiment discloses a heavy commercial vehicle wheel set bolt floating press fitting device, which comprises a support table 1, a press head 2, a press head floating device 3, a transmission cabinet 4, a power source 5 and an electrical control system 6.

[0029] The support table 1 and the transmission cabinet 4 are both mounted on a base plate 7, the transmission cabinet 4 is internally provided with a speed reducer and a hydraulic sliding mechanism, and the power source 5 and the electrical control system 6 are both mounted on the outer wall of the transmission cabinet 4.

[0030] The output end of the power source 5 is connected with the speed reducer, the speed reducer is connected with the hydraulic sliding mechanism, a vertical push rod 8 is slidingly connected to the hydraulic sliding mechanism, the lower end of the push rod 8 is floatingly connected with the press head 2 through the press head floating device 3, the press head 2 is located directly above the support table 1, and a press fitting table 9 is mounted on the support table 1. The power source 5 is a hydraulic cylinder.

[0031] Referring to Figure 3 The press head floating device 3 comprises a floating device body and two side plates, the upper surface of the floating device body is connected with the lower end of the push rod 8, and the two vertical side plates are fixedly arranged on the lower surface of the floating device body, and a vertical strip-shaped hole is formed in each side plate.

[0032] The press head 2 comprises a press head body and two press rods, the press head body is located between the two side plates, a connecting bolt 201 is fixed on the press head body, the two ends of the connecting bolt 201 extend out of the press head body and respectively pass through the strip-shaped holes of the two side plates, and a plurality of springs 301 are connected between the press head body and the floating device body.

[0033] The upper ends of the two vertical press rods are fixed on the lower surface of the press head body, in working, the lower ends of the two press rods respectively apply loads to two bolts of a to-be-pressed hub 11, and the connecting line of the bolt holes where the two bolts are located passes through the center of the to-be-pressed hub 11, the connecting bolt 201 moves relative to the side plates in the vertical direction, and the springs 301 are compressed.

[0034] The press fitting table 9 is internally hollow and is provided with a motor, the output end of the motor extends out of the press fitting table 9 and is connected with a horizontal hub support plate 10, and a plurality of through holes for bolts to pass through are formed in the hub support plate 10. In working, the to-be-pressed hub 11 is placed on the hub support plate 10, a plurality of bolt holes on the to-be-pressed hub 11 are respectively aligned with a plurality of through holes on the hub support plate 10 and are in communication with the inside of the press fitting table 9, and the two press rods first complete the press fitting of a pair of bolts. The electrical control system 6 controls the motor in the press fitting table 9 to rotate by a set angle, and the press fitting of the next pair of bolts is performed. Rotation and press fitting are repeated until all the bolts of the to-be-pressed hub 11 are completely press fitted.

[0035] Referring to Figure 4The hydraulic sliding mechanism comprises an electromagnetic valve 402, a hydraulic pipeline 403, an oil pump 404, a hydraulic cylinder 405 and a pressure displacement sensor 406 installed inside the cabinet body 401 of the transmission cabinet 4. The oil pump 404 is connected with the power source 5, the outlet of the oil pump 404 is connected with the electromagnetic valve 402 through the hydraulic pipeline 403, the electromagnetic valve 402 is connected with the upper and lower ends of the hydraulic cylinder 405 through two pipelines respectively, the pressure displacement sensor 406 is installed on the hydraulic cylinder 405, and the output end of the hydraulic cylinder 405 is connected with the push rod 8. In operation, the power source 5 and the speed reducer transmit power to the oil pump 404, the oil pump 404 transmits the hydraulic oil in the oil tank to the electromagnetic valve 402 through the hydraulic pipeline 403, controls the direction through the electromagnetic valve 402, transmits the hydraulic oil to the upper end or the lower end of the hydraulic cylinder 405, and the hydraulic sliding mechanism moves up and down.

[0036] The electric control system 6 comprises an upper computer and a display screen. In operation, the upper computer controls the power source 5 and the motor inside the press-fitting table 9 to work, the power source 5 transmits power to the push rod 8 through the hydraulic sliding mechanism, and the motor of the press-fitting table 9 drives the to-be-press-fitted hub 11 to rotate by a set angle. The stress information and displacement information monitored by the pressure displacement sensor 406 are transmitted to the upper computer for analysis, and the analysis result is displayed through the display screen.

[0037] In operation, the to-be-press-fitted hub 11 is placed on the press-fitting table 9, a bolt is placed in each bolt hole of the to-be-press-fitted hub 11, the electric control system 6 controls the power source 5 to start, drives the push rod 8 and the floating device 3 of the press head to move downward, and the press head 2 press-fits the bolt to the to-be-press-fitted hub 11.

[0038] Specifically, in the press-fitting process, the to-be-press-fitted hub 11 is placed on the hub support plate 10, a plurality of bolt holes on the to-be-press-fitted hub 11 are aligned with a plurality of through holes on the hub support plate 10 and are in communication with the inside of the press-fitting table 9, a bolt is placed in each bolt hole of the to-be-press-fitted hub 11, the upper computer controls the power source 5 to start, drives the push rod 8 and the floating device 3 of the press head to move downward, and the two press rods of the press head 2 complete the press-fitting of a pair of bolts first, the connecting line of the bolt holes where each pair of bolts is located passes through the center of the to-be-press-fitted hub 11, the connecting bolt 201 and the side plate move relative to each other in the vertical direction, and the spring 301 is compressed. The upper computer controls the motor inside the press-fitting table 9 to rotate by a set angle, and the next pair of bolts is aligned with the two press rods. The rotation and press-fitting are repeated until all the bolts of the to-be-press-fitted hub 11 are press-fitted. The stress sensor and the displacement sensor transmit the collected information to the upper computer for processing and analysis, and the analysis result is displayed in the form of a “pressure-displacement” curve through the display screen.

[0039] It is worth mentioning that the pressing device of the embodiment replaces the traditional manual copper hammer knocking assembly, realizes automatic pressing of the wheel set bolts, and improves the assembly quality and efficiency of the wheel set. Meanwhile, considering that a larger external force is needed to press the tire bolts based on the larger interference amount of the tire bolt joint part, and that the hub is prone to the "seesaw" phenomenon under the action of the larger external force during pressing, the pressing device needs to press two bolts (with an angle difference of 180°) each time to ensure the stability of the hub during pressing. Since there are errors in the part processing process, and the thickness of the bolts in the same batch also has differences, and there is a risk that individual bolts are not pressed in place when pressing two bolts. Therefore, the floating device of the pressing head is increased to ensure that each bolt can be pressed in place. The displacement and pressing force values of the pressing head can be set at the control end to adapt to different types of products, and the "pressure-displacement" curve is displayed on the display screen to comprehensively judge the pressing effect.

[0040] Embodiment 2

[0041] The embodiment discloses a heavy commercial vehicle wheel set bolt floating pressing device, which comprises a support table 1, a pressing head 2, a pressing head floating device 3, a transmission cabinet 4, a power source 5 and an electrical control system 6.

[0042] The support table 1 and the transmission cabinet 4 are both mounted on a base plate 7, and a speed reducer and a hydraulic sliding mechanism are arranged in the transmission cabinet 4. The power source 5 and the electrical control system 6 are both mounted on the outer wall of the transmission cabinet 4.

[0043] The output end of the power source 5 is connected with the speed reducer, the speed reducer is connected with the hydraulic sliding mechanism, and a vertical push rod 8 is slidably connected to the hydraulic sliding mechanism. The lower end of the push rod 8 is floatingly connected with the pressing head 2 through the pressing head floating device 3. The pressing head 2 is located directly above the support table 1, and a pressing table 9 is mounted on the support table 1.

[0044] When working, the to-be-pressed hub 11 is placed on the pressing table 9, the bolts are placed in each bolt hole of the to-be-pressed hub 11, the electrical control system 6 controls the power source 5 to start, drives the push rod 8 and the pressing head floating device 3 to move downward, and the pressing head 2 presses the bolts onto the to-be-pressed hub 11.

[0045] Embodiment 3

[0046] The main structure of the embodiment is the same as that of embodiment 2, and further, the pressing head floating device 3 comprises a floating device body and two side plates. The upper surface of the floating device body is connected with the lower end of the push rod 8, and the two vertical side plates are fixedly arranged on the lower surface of the floating device body. A vertical strip-shaped hole is formed in each side plate.

[0047] The pressing head 2 comprises a pressing head body and two pressing rods, the pressing head body is located between two side plates, a coupling bolt 201 is fixed on the pressing head body, both ends of the coupling bolt 201 extend out of the pressing head body and respectively pass through the strip-shaped holes of the two side plates, and a plurality of springs 301 are connected between the pressing head body and the floating device body.

[0048] The upper ends of the two vertical pressing rods are fixed on the lower surface of the pressing head body, in operation, the lower ends of the two pressing rods respectively apply loads to two bolts of the hub 11 to be pressed, and the connecting line of the bolt holes where the two bolts are located passes through the center of the hub 11 to be pressed, the coupling bolt 201 moves relative to the side plates in the vertical direction, and the springs 301 are compressed.

[0049] Embodiment 4:

[0050] The main structure of this embodiment is the same as that of embodiment 3, further, the pressing table 9 is internally hollow and is provided with a motor, the output end of the motor extends out of the pressing table 9 and is connected with the horizontal hub support plate 10, and a plurality of through holes for bolts to pass through are formed in the hub support plate 10.

[0051] In operation, the hub 11 to be pressed is placed on the hub support plate 10, a plurality of bolt holes on the hub 11 to be pressed are respectively aligned with a plurality of through holes on the hub support plate 10 and are in communication with the inside of the pressing table 9, and the two pressing rods first complete the pressing of a pair of bolts. The electrical control system 6 controls the motor inside the pressing table 9 to rotate by a set angle to complete the pressing of the next pair of bolts. The rotation and pressing are repeated until all the bolts of the hub 11 to be pressed are completed.

[0052] Embodiment 5:

[0053] The main structure of this embodiment is the same as that of embodiment 4, further, the hydraulic sliding mechanism comprises an electromagnetic valve 402, a hydraulic pipeline 403, an oil pump 404, a hydraulic cylinder 405 and a pressure displacement sensor 406 which are installed inside the cabinet body 401 of the transmission cabinet 4.

[0054] The oil pump 404 is connected with the power source 5, the outlet of the oil pump 404 is connected with the electromagnetic valve 402 through the hydraulic pipeline 403, the electromagnetic valve 402 is connected with the upper and lower ends of the hydraulic cylinder 405 through two pipelines respectively, the pressure displacement sensor 406 is installed on the hydraulic cylinder 405, and the output end of the hydraulic cylinder 405 is connected with the push rod 8.

[0055] In operation, the power source 5 and the speed reducer transmit power to the oil pump 404, the oil pump 404 transmits the hydraulic oil in the oil tank to the electromagnetic valve 402 through the hydraulic pipeline 403, controls the direction through the electromagnetic valve 402, and transmits the hydraulic oil to the upper end or the lower end of the hydraulic cylinder 405, so that the hydraulic sliding mechanism moves up and down.

[0056] Embodiment 6:

[0057] The embodiment mainly has the same structure as embodiment 5, further, the electric control system 6 comprises a host computer and a display screen. In operation, the host computer controls the power source 5 and the motor inside the press station 9 to work. The power source 5 transmits power to the push rod 8 through the hydraulic sliding mechanism, and the motor of the press station 9 drives the to-be-pressed hub 11 to rotate by a set angle. The stress information and displacement information monitored by the pressure displacement sensor 406 are transmitted to the host computer for analysis, and the analysis result is displayed through the display screen.

[0058] Embodiment 7:

[0059] The embodiment mainly has the same structure as embodiment 2, further, the power source 5 is a hydraulic cylinder.

Claims

1. A heavy commercial vehicle wheel set bolt floating press fitting device, characterized in that: It comprises a support table (1), a pressing head (2), a pressing head floating device (3), a transmission cabinet (4), a power source (5) and an electrical control system (6); The support table (1) and the transmission cabinet (4) are both mounted on a base plate (7), and a speed reducer and a hydraulic sliding mechanism are arranged in the transmission cabinet (4), and the power source (5) and the electrical control system (6) are both mounted on the outer wall of the transmission cabinet (4); The output end of the power source (5) is connected with the speed reducer, the speed reducer is connected with the hydraulic sliding mechanism, a vertical push rod (8) is slidably connected to the hydraulic sliding mechanism, the lower end of the push rod (8) is floatingly connected with the pressing head (2) through the pressing head floating device (3), the pressing head (2) is located directly above the support table (1), and a pressing table (9) is mounted on the support table (1); The pressing head floating device (3) comprises a floating device body and two side plates, the upper surface of the floating device body is connected with the lower end of the push rod (8), and the two vertical side plates are fixedly arranged on the lower surface of the floating device body; and vertical strip-shaped holes are formed in each side plate; The pressing head (2) comprises a pressing head body and two pressing rods, the pressing head body is located between the two side plates, a connecting bolt (201) is fixed on the pressing head body, the two ends of the connecting bolt (201) extend out of the pressing head body and respectively pass through the strip-shaped holes of the two side plates, and a plurality of springs (301) are connected between the pressing head body and the floating device body; The upper ends of the two vertical pressing rods are fixed on the lower surface of the pressing head body; during operation, a hub (11) to be pressed is placed on the pressing table (9), bolts are arranged in each bolt hole of the hub (11) to be pressed, the electrical control system (6) controls the power source (5) to start, drives the push rod (8) and the pressing head floating device (3) to move downwards, the lower ends of the two pressing rods apply loads to two bolts of the hub (11) to be pressed, the connecting line of the bolt holes where the two bolts are located passes through the center of the hub (11) to be pressed, the connecting bolt (201) and the side plate move relatively in the vertical direction, the spring (301) is compressed, and the pressing head (2) presses the bolts onto the hub (11) to be pressed.

2. The heavy-duty commercial vehicle wheel set bolt float press device of claim 1, characterized by: The pressing table (9) is hollow and is provided with a motor, the output end of the motor extends out of the pressing table (9) and is connected with a horizontal hub support plate (10), and a plurality of through holes for the bolts to pass through are formed in the hub support plate (10); During operation, the hub (11) to be pressed is placed on the hub support plate (10), a plurality of bolt holes on the hub (11) to be pressed are aligned with a plurality of through holes on the hub support plate (10) and are in communication with the inside of the pressing table (9), and the two pressing rods first complete the pressing of a pair of bolts; the electrical control system (6) controls the motor in the pressing table (9) to rotate by a set angle, and the pressing of the next pair of bolts is performed; the rotation and pressing are repeated until all the bolts of the hub (11) to be pressed are pressed.

3. The heavy duty commercial vehicle wheel set bolt float press device of claim 2, characterized by: The hydraulic sliding mechanism comprises an electromagnetic valve (402), a hydraulic pipeline (403), an oil pump (404), a hydraulic cylinder (405) and a pressure displacement sensor (406) which are mounted in the cabinet body (401) of the transmission cabinet (4); The oil pump (404) is connected with the power source (5), the outlet of the oil pump (404) is connected with the electromagnetic valve (402) through the hydraulic pipeline (403), the electromagnetic valve (402) is connected with the upper and lower ends of the hydraulic cylinder (405) through two pipelines respectively, the pressure displacement sensor (406) is installed on the hydraulic cylinder (405), and the output end of the hydraulic cylinder (405) is connected with the push rod (8); When working, the power source (5) and the speed reducer transmit power to the oil pump (404), the oil pump (404) transmits hydraulic oil in the oil tank to the electromagnetic valve (402) through the hydraulic pipeline (403), controls the direction through the electromagnetic valve (402), and transmits the hydraulic oil to the upper end or the lower end of the hydraulic cylinder (405), so that the hydraulic sliding mechanism moves up and down.

4. The heavy duty commercial vehicle wheel set bolt float press device of claim 3, characterized by: The electric control system (6) comprises a host computer and a display screen, when working, the host computer controls the power source (5) and the motor in the press mounting table (9) to work, the power source (5) transmits power to the push rod (8) through the hydraulic sliding mechanism, and the motor of the press mounting table (9) drives the to-be-pressed hub (11) to rotate by a set angle; the stress information and displacement information monitored by the pressure displacement sensor (406) are transmitted to the host computer for analysis, and the analysis result is displayed through the display screen.

5. The heavy duty commercial vehicle wheel set bolt float press device of claim 1, wherein: The power source (5) is a hydraulic cylinder.

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