Bearing front cover assembling device

Abstract

The utility model provides a bearing front cover assembling device, the assembling device comprises a wheel set positioning unit and a bolt assembling unit which are oppositely arranged, the wheel set positioning unit comprises a bracket and an axial positioning mechanism, the bracket is used for lifting a wheel set, and the axial positioning mechanism is used for positioning the wheel set. The axial positioning mechanisms are arranged at the two ends of the bracket and used for limiting the axial positions of the wheel sets. The bolt assembling unit comprises a bolt tightening mechanism, the bolt tightening mechanism corresponds to the bracket in position, and the bolt tightening mechanism can press a bearing front cover to one end of the wheel set and can tighten a bolt on the bearing front cover. The bearing front cover assembling device has the advantages that the position of the wheel set is fixed through the wheel set positioning unit, then the bearing front cover is pressed on the wheel set through the bolt assembling unit, bolts on the bearing front cover are tightened, and automatic assembling of the bearing front cover can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of railway freight car assembly, in particular to a bearing front cover assembly device. Background Art

[0002] With the rapid development of railway transportation, the safety and reliability of railway freight cars have become the focus of the transportation industry. Railway freight car bearings are key components of vehicles. Their assembly quality directly determines the driving stability and service life of the train, especially the assembly of the bearing front cover, which is related to the safety and reliability of the train. Improper assembly may cause serious safety accidents.

[0003] However, the existing railway freight car bearing front cover assembly is still carried out by manual assembly, and there are many problems based on this. First, due to unreasonable design, the assembly process of the bearing front cover becomes complicated and cumbersome, so the staff often need to perform a lot of manual operations during the assembly process, which not only increases the labor intensity of the staff, but also leads to low production efficiency and cannot meet the needs of modern railway transportation. Second, due to imperfect technology, there are many safety hazards in the assembly process of the bearing front cover. When the staff is performing assembly operations, due to improper operation or equipment failure, it is easy to cause work-related injuries such as being hit or bumped, which poses a serious threat to the life safety of the staff.

[0004] Although there are devices currently designed for automated research on bearing front covers, such as the Chinese utility model patent with publication number CN217800051U, they are mainly used for disassembly of bearing front covers and do not have a fixed structure for the wheelset. During the disassembly operation, the wheelset may shift, causing the operation to fail, and are not suitable for assembly of bearing front covers.

[0005] Therefore, it is necessary to study a bearing front cover assembly device to solve the above problems or alleviate the impact of the above problems. Utility Model Content

[0006] The utility model provides a bearing front cover assembly device, which fixes the position of the wheelset through a wheelset positioning unit, and then presses the bearing front cover onto the wheelset through a bolt assembly unit and tightens the bolts on the bearing front cover, thereby realizing automatic assembly of the bearing front cover, so as to effectively solve the above-mentioned problems or alleviate the effects of the above-mentioned problems.

[0007] The bearing front cover assembly device of the utility model may include a wheelset positioning unit and a bolt assembly unit which are arranged relatively, wherein:

[0008] The wheelset positioning unit comprises a bracket and an axial positioning mechanism, wherein the bracket is used to support the wheelset, and the axial positioning mechanism is arranged at both ends of the bracket and is used to limit the axial position of the wheelset;

[0009] The bolt assembly unit comprises a bolt tightening mechanism, which corresponds to the position of the bracket and can press the bearing front cover onto one end of the wheelset and tighten the bolts on the bearing front cover.

[0010] In one embodiment, the wheelset positioning unit further includes a base and a rotating and lifting mechanism, the rotating and lifting mechanism is arranged on the base, the bracket is arranged on the rotating and lifting mechanism, and the rotating and lifting mechanism can rotate and lift the bracket.

[0011] In one embodiment, the rotary lifting mechanism includes a rotary assembly, which includes a gear arranged at the center of the base and a rotary cylinder and a rack both arranged on one side of the base, the rack being meshed with the gear, and the rotary cylinder can drive the gear to rotate by driving the rack.

[0012] In one embodiment, the rotary lifting mechanism further includes a lifting assembly, the lifting assembly is mounted on the gear, and the bracket is disposed at the top of the lifting assembly.

[0013] In one embodiment, the axial positioning mechanism includes two groups of axial positioning components located at both ends of the bracket, and the axial positioning components include a positioning cylinder and a pendulum block. The positioning cylinder is installed on the inner side of both ends of the base, and the positioning cylinder can drive the pendulum block to stick to the inner side of the rim of the wheelset.

[0014] In one embodiment, the wheelset positioning unit further includes two sets of pushing wheel assemblies located at both ends of the bracket, the pushing wheel assemblies include a pushing wheel cylinder and a pushing wheel plate, the pushing wheel cylinder is located on the outer side of both ends of the base, and the pushing wheel cylinder can drive the pushing wheel plate to block or push out the wheelset.

[0015] In one embodiment, the bolt tightening mechanism includes a top cover front disc and a tightening wrench, wherein the top cover front disc is used to press the bearing front cover toward the wheelset, and the tightening wrench is used to tighten the bolts on the bearing front cover.

[0016] In one embodiment, the bolt assembly unit further includes a slide table and a sliding cylinder. The sliding cylinder and the bolt tightening mechanism are both mounted on the slide table. The sliding cylinder can drive the bolt tightening mechanism to move on the slide table.

[0017] In one embodiment, the bolt assembly unit further comprises the servo mechanism for driving the tightening wrench, the servo mechanism comprising a servo motor, a driving toothed belt pulley, a driven toothed belt pulley and a toothed belt;

[0018] The servo motor is fixedly mounted on the fixing plate of the bolt tightening mechanism, the driving toothed belt pulley is mounted on the output shaft of the servo motor, the driven toothed belt pulley is mounted on the transmission shaft of the tightening wrench, and the driven toothed belt pulley is connected to the driving toothed belt pulley through the toothed belt transmission.

[0019] In one embodiment, the assembly device also includes a visual recognition camera and an automatic control system, wherein the visual recognition camera is located between the wheelset positioning unit and the bolt assembly unit, and the visual recognition camera is used to assist the automatic control system in controlling the wheelset positioning unit and the bolt assembly unit to cooperate in assembling the bearing front cover.

[0020] The bearing front cover assembly device provided by the utility model has at least the following beneficial effects compared with the prior art:

[0021] The bearing front cover assembly device of the utility model fixes the position of the wheelset through the wheelset positioning unit, and then presses the bearing front cover onto the wheelset through the bolt assembly unit and tightens the bolts on the bearing front cover, so as to realize the automatic assembly of the bearing front cover. In this way, the bearing front cover assembly device of the present application can replace the manual assembly of the bearing front cover of the railway freight car, which can reduce the labor intensity of personnel, reduce the possible safety hazards, and reduce the safety accidents caused by assembly errors of personnel, so as to improve the efficiency of railway transportation and enhance the safety of railway operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0023] Figure 1 This is a front view of the bearing front cover assembly device of the embodiment of the utility model;

[0024] Figure 2 It is a top view of the bearing front cover assembly device of the embodiment of the utility model;

[0025] Figure 3 It is a side view of the bearing front cover assembly device of the embodiment of the utility model;

[0026] Figure 4 This is a front view of the rotary lifting mechanism of the embodiment of the utility model;

[0027] Figure 5 It is a side view of the rotary lifting mechanism of the embodiment of the utility model;

[0028] Figure 6 It is a top view of the rotating assembly of the embodiment of the utility model.

[0029] In the drawings, the same reference numerals are used for the same components. The drawings are not drawn to scale.

[0030] Reference numerals:

[0031] 10-wheel set positioning unit, 11-bracket, 12-base, 13-axial positioning mechanism, 131-axial positioning assembly,

[0032] 1311-positioning cylinder, 1312-swing block, 14-rotating and lifting mechanism, 141-rotating assembly, 1411-gear, 1412-rack, 1413-rotating cylinder, 142-lifting assembly, 16-push wheel assembly, 161-push wheel cylinder, 162-push wheel plate, 20-bolt assembly unit, 21-bolt tightening mechanism, 211-top cover front disc, 212-tightening wrench, 22-slide, 23-sliding cylinder, 24-servo mechanism, 241-servo motor, 242-driving toothed belt pulley, 243-driven toothed belt pulley, 244-toothed belt, 30-visual recognition camera. DETAILED DESCRIPTION

[0033] The utility model will be further described below in conjunction with the accompanying drawings.

[0034] like Figure 1 and Figure 2 As shown, the bearing front cover assembly device of the utility model may include a wheelset positioning unit 10 and a bolt assembly unit 20 which are arranged relatively, wherein:

[0035] The wheelset positioning unit 10 includes a bracket 11 and an axial positioning mechanism 13. The bracket 11 is used to lift the wheelset. The axial positioning mechanism 13 is arranged at both ends of the bracket 11 and is used to limit the axial position of the wheelset.

[0036] The bolt assembly unit 20 includes a bolt tightening mechanism 21 , which corresponds to the position of the bracket 11 . The bolt tightening mechanism 21 can press the bearing front cover onto one end of the wheelset and tighten the bolts on the bearing front cover.

[0037] Specifically, the main structure of the bearing front cover assembly device includes a wheelset positioning unit 10 and a bolt assembly unit 20 that are relatively arranged. This arrangement makes the operation of assembling the bearing front cover simple and quick, facilitates automation, and can greatly improve the assembly efficiency and accuracy of the bearing front cover.

[0038] The wheelset positioning unit 10 mainly includes a bracket 11 and an axial positioning mechanism 13. The bracket 11, as a supporting component, can stably support the wheelset to ensure the stability of the wheelset during assembly. The axial positioning mechanism 13 is arranged at both ends of the bracket 11, and its main function is to limit the axial position of the wheelset and further prevent the wheelset from moving or deflecting during assembly.

[0039] The bolt assembly unit 20 mainly includes a bolt tightening mechanism 21. The bolt tightening mechanism 21 corresponds precisely to the position of the bracket 11, so that after the wheelset is positioned, the bolt tightening mechanism 21 can quickly and accurately find the position of the bearing front cover. The bolt tightening mechanism 21 can automatically press the bearing front cover to one end of the wheelset, and can use electric tightening technology to tighten the bolts on the bearing front cover. This automated tightening method can not only improve work efficiency, but also ensure the uniformity and consistency of bolt tightening, greatly improving the assembly quality of the bearing front cover.

[0040] In a specific application, the wheelset is first placed on the bracket 11, and then the wheelset is precisely positioned through the axial positioning mechanism 13. Then, the bolt tightening mechanism 21 automatically presses the bearing front cover against one end of the wheelset and starts tightening the bolts. The entire assembly process does not require manual intervention, thereby realizing the automated assembly of the bearing front cover and greatly improving assembly efficiency and accuracy.

[0041] In general, the bearing front cover assembly device fixes the position of the wheelset through the wheelset positioning unit 10, and then presses the bearing front cover onto the wheelset through the bolt assembly unit 20 and tightens the bolts on the bearing front cover, thereby realizing the automatic assembly of the bearing front cover. In this way, the bearing front cover assembly device can replace manual assembly of the bearing front cover of railway freight cars, which can reduce the labor intensity of personnel, reduce possible safety hazards, and reduce safety accidents caused by assembly errors by personnel, so as to improve railway transportation efficiency and enhance railway operation safety.

[0042] Furthermore, the bracket 11 has a V-shaped structure, which can form radial constraints on the wheelset while lifting the wheelset.

[0043] In an example, Figures 1 to 5 As shown, the wheelset positioning unit 10 further includes a base 12 and a rotating and lifting mechanism 14 . The rotating and lifting mechanism 14 is disposed on the base 12 , and the bracket 11 is disposed on the rotating and lifting mechanism 14 . The rotating and lifting mechanism 14 can rotate and lift the bracket 11 .

[0044] Specifically, the base 12 is the foundation of the wheelset positioning unit 10, and its structure is stable, which can ensure that the entire unit remains stable during operation. The base 12 can be welded with steel sections, and the surface can also be sprayed with an anti-corrosion coating to improve its durability and service life.

[0045] The rotating and lifting mechanism 14 is fixedly arranged on the base 12, and it can realize the rotation and lifting functions of the bracket 11 through a precise mechanical structure and a control system. The design of the rotating and lifting mechanism 14 fully considers the need for positioning the wheelset when the bearing front cover is assembled, so that the bracket 11 can rotate 360° in the horizontal plane, thereby facilitating the adjustment of the direction of the wheelset; at the same time, the lifting function enables the bracket 11 to move up and down to adapt to wheelsets of different heights.

[0046] In a specific application, first, according to the specifications and assembly requirements of the wheelset, the angle and height of the rotating lifting mechanism 14 can be adjusted through the control system to put the bracket 11 in a suitable position. Then the wheelset is placed on the bracket 11, and the direction of the wheelset is adjusted by the rotating function of the rotating lifting mechanism 14 to make it consistent with the assembly direction, and the height of the wheelset is adjusted by the lifting function of the rotating lifting mechanism 14 to make its bearing position correspond to the bolt tightening mechanism 21. Finally, the wheelset is accurately positioned by the axial positioning mechanism 13 to ensure its position accuracy during the assembly process.

[0047] This design makes the wheelset positioning unit 10 more flexible and adaptable, and can meet the positioning requirements of wheelsets of different specifications and directions. At the same time, by accurately controlling the movement of the rotating lifting mechanism 14, the position of the wheelset can be fine-tuned, further improving the accuracy and efficiency of assembly.

[0048] In an example, Figure 2 and Figure 6 As shown, the rotating lifting mechanism 14 includes a rotating component 141, and the rotating component 141 includes a gear 1411 arranged at the center of the base 12 and a rotating cylinder 1413 and a rack 1412 both arranged on one side of the base 12. The rack 1412 is meshed with the gear 1411, and the rotating cylinder 1413 can drive the gear 1411 to rotate by driving the rack 1412.

[0049] Specifically, the rotating assembly 141 is the core component of the rotating lifting mechanism 14 to realize the rotating function. The rotating assembly 141 mainly includes a gear 1411 arranged at the center of the base 12, a rotating oil cylinder 1413 arranged at one side of the base 12, and a rack 1412. The gear 1411 is the core component of the rotation, and its center corresponds to the center of the base 12 to ensure the stability of the rotation. The rack 1412 is meshed with the gear 1411, and the movement of the rack 1412 can drive the rotation of the gear 1411. The rotating oil cylinder 1413 is the power source for driving the rack 1412 to move. It is arranged on one side of the base 12 and is connected to the rack 1412 through a connecting rod or other connecting mechanism. When the rotating oil cylinder 1413 is working, it can push or pull the rack 1412 to perform linear motion, and because the rack 1412 is meshed with the gear 1411, the linear motion of the rack 1412 will be converted into the rotational motion of the gear 1411.

[0050] In specific applications, when the direction of the wheelset needs to be adjusted, the control system will start the rotating cylinder 1413. The rotating cylinder 1413 pushes or pulls the rack 1412 to move linearly according to the control command. The movement of the rack 1412 drives the gear 1411 to rotate through the meshing relationship. Since the bracket 11 is relatively fixed on the gear 1411 through the rotating lifting mechanism 14, the rotation of the gear 1411 will drive the bracket 11 and the wheelset to rotate together, thereby realizing the adjustment of the direction of the wheelset.

[0051] This design enables the rotating lifting mechanism 14 to accurately control the rotation angle of the bracket 11 and realize flexible adjustment of the direction of the wheelset. At the same time, the combination of the rotating cylinder 1413, the rack 1412 and the gear 1411 has the characteristics of simple structure, high transmission efficiency, stable and reliable operation, and can ensure the long-term stable operation of the rotating component 141.

[0052] In an example, Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the rotary lifting mechanism 14 further includes a lifting component 142 . The lifting component 142 is mounted on the gear 1411 , and a bracket 11 is disposed at the top of the lifting component 142 .

[0053] Specifically, the lifting assembly 142 is the core component of the rotating lifting mechanism 14 to realize the lifting function, so as to meet the positioning requirements of the wheelset at different heights. The lifting assembly 142 is installed on the gear 1411, so that the gear 1411 not only serves as the core component of the rotation, but also bears the weight and movement of the lifting assembly 142. The design of the gear 1411 fully considers the dual requirements of rotation and lifting. The top of the lifting assembly 142 is provided with a bracket 11, which is the direct bearing component for the positioning of the wheelset. The bracket 11 and the lifting assembly 142 are fixedly connected to achieve stable support to ensure the stability and safety of the wheelset during the lifting process.

[0054] In a specific application, when the height of the wheelset needs to be adjusted, the lifting assembly 142 starts to work, and it can achieve lifting movement by electric, hydraulic or other driving methods. As the lifting assembly 142 rises or falls, the bracket 11 and the wheelset fixed thereon will also rise or fall accordingly, thereby achieving accurate adjustment of the height of the wheelset.

[0055] Furthermore, the lifting component 142 may be a lifting cylinder.

[0056] In an example, Figure 1 and Figure 2As shown, the axial positioning mechanism 13 includes two groups of axial positioning components 131 located at both ends of the bracket 11. The axial positioning component 131 includes a positioning cylinder 1311 and a pendulum block 1312. The positioning cylinder 1311 is installed on the inner side of both ends of the base 12. The positioning cylinder 1311 can drive the pendulum block 1312 to stick to the inner side of the rim of the wheelset.

[0057] Specifically, the axial positioning mechanism 13 mainly includes two groups of axial positioning components 131 located at both ends of the bracket 11. Each group of positioning components includes a positioning cylinder 1311 and a swing block 1312, which work together to achieve a close fit with the inner side of the wheel rim of the wheelset, thereby limiting the axial movement of the wheelset and preventing the wheelset from moving in the axial direction when the bolts are assembled.

[0058] The positioning cylinder 1311 is fixedly mounted on the inner side of both ends of the base 12, so that the positioning cylinder 1311 has a stable foundation, and the positioning cylinder 1311 has sufficient driving force and precise control performance, and can accurately drive the pendulum block 1312 to move. The pendulum block 1312, as a component in direct contact with the wheelset, is fixedly mounted on the top of the driving end of the positioning cylinder 1311, and its shape and size are carefully designed to ensure that it can fit tightly with the inner side of the wheel rim of the wheelset.

[0059] In a specific application, when the wheelset is placed on the bracket 11 and initially positioned, the control system will start the positioning cylinder 1311 of the axial positioning mechanism 13. The positioning cylinder 1311 pushes the pendulum block 1312 toward the inner side of the rim of the wheelset according to the control instruction. Since the shape and size of the pendulum block 1312 match the inner side of the rim, the pendulum block 1312 can fit tightly on the inner side of the rim, thereby limiting the axial movement of the wheelset.

[0060] This design enables the axial positioning mechanism 13 to achieve precise control of the axial position of the wheelset. At the same time, due to the close fit between the pendulum block 1312 and the inner side of the rim, it can also effectively prevent the wheelset from shaking or shifting during the assembly process, further improving the accuracy and efficiency of assembly.

[0061] In an example, Figure 1 and Figure 2 As shown, the wheelset positioning unit 10 also includes two sets of pushing wheel assemblies 16 located at both ends of the bracket 11. The pushing wheel assembly 16 includes a pushing wheel cylinder 161 and a pushing wheel plate 162. The pushing wheel cylinder 161 is located on the outer side of both ends of the base 12. The pushing wheel cylinder 161 can drive the pushing wheel plate 162 to block or push out the wheelset.

[0062] Specifically, the push-block wheel assembly 16 can block or push out the wheel set in the radial direction to ensure that the wheel set can be stably placed on the bracket 11, and the assembled wheel set can be smoothly pushed out when the wheel set needs to be replaced. Each group of push-block wheel assemblies 16 mainly includes a wheel-pushing cylinder 161 and a wheel-pushing plate 162. The wheel-pushing cylinder 161 is located on the outside of the two ends of the base 12 and is perpendicular to the axial direction of the wheel set. The wheel-pushing cylinder 161 has sufficient driving force and precise control performance, and can accurately drive the wheel-pushing plate 162 to move. As a component that directly contacts the wheel set, the wheel-pushing plate 162 is designed to match the shape and size of the wheel set to ensure that it can fit on the outer edge of the wheel. The wheel-pushing plate 162 is fixedly mounted on the top of the driving end of the wheel-pushing cylinder 161. When the wheel-pushing cylinder 161 is working, it can push the wheel-pushing plate 162 to move toward the wheel until it abuts against and fits with the outer edge of the wheel.

[0063] In a specific application, when the wheelset needs to be fixed during assembly, the control system will start the wheel-pushing cylinder 161 of the wheel-pushing assembly 16, and the wheel-pushing cylinder 161 will push the wheel-pushing plate 162 to move toward the wheelset and abut against the outer edge of the wheel, thereby ensuring that the wheelset can be stably placed on the bracket 11. When the wheelset needs to be replaced, the wheel-pushing cylinder 161 will drive the wheel-pushing plate 162 to push the assembled wheelset in the target direction and push the wheelset out of the bracket 11.

[0064] In this way, the push wheel assembly 16 can not only realize the stable placement and smooth pushing out of the wheelset, but also provide strong support for the accurate positioning and efficient assembly of the wheelset.

[0065] In an example, Figure 1 As shown, the bolt tightening mechanism 21 includes a top cover front disc 211 and a tightening wrench 212. The top cover front disc 211 is used to press the bearing front cover toward the wheelset, and the tightening wrench 212 is used to tighten the bolts on the bearing front cover.

[0066] Specifically, the bolt tightening mechanism 21 is mainly responsible for pressing the bearing front cover tightly onto the wheelset and tightening the bolts to ensure the stability and fixation of the bearing front cover. It includes two parts: a top cover front disc 211 and a tightening wrench 212 .

[0067] The main function of the top cover front disc 211 is to press the bearing front cover against the wheelset. The top cover front disc 211 is arranged at a position facing the wheelset positioning unit 10 and corresponds to the bracket 11. The top cover front disc 211 can be made of high-strength material, with sufficient rigidity and stability to ensure that it will not be deformed or damaged during the pressing process. The shape and size of the top cover front disc 211 are carefully designed to match the shape of the bearing front cover, ensuring that the bearing front cover can be evenly pressed against the wheelset. During the pressing process, the top cover front disc 211 can be moved by an appropriate driving mechanism (such as a hydraulic cylinder, a cylinder or an electric push rod, etc.). When the driving mechanism works, the top cover front disc 211 moves toward the bearing front cover and gradually presses it against the wheelset. At the same time, due to the large contact area between the top cover front disc 211 and the bearing front cover, the pressing force can be evenly distributed, which can avoid local deformation or damage of the bearing front cover during the pressing process.

[0068] The main function of the tightening wrench 212 is to tighten the bolts on the bearing front cover. The front disc 211 of the top cover is also arranged in a position facing the wheelset positioning unit 10 and corresponding to the bracket 11. The shape and size of the tightening wrench 212 match the bolts on the bearing front cover, and can be accurately put on the bolt head for tightening operation. During the tightening process, the tightening wrench 212 is rotated by an appropriate driving mechanism (such as an electric wrench, a pneumatic wrench, etc.). When the driving mechanism is working, the tightening wrench 212 drives the bolt to rotate and gradually tightens it on the bearing front cover. By accurately controlling the tightening torque and the rotation speed, it can be ensured that the tightening force of the bolt is moderate, and it will not be too tight to cause the bolt to break or the bearing front cover to deform, nor will it be too loose to cause the bearing front cover to loosen or fall off.

[0069] In an example, Figures 1 to 3 As shown, the bolt assembly unit 20 further includes a slide 22 and a sliding cylinder 23 . The sliding cylinder 23 and the bolt tightening mechanism 21 are both mounted on the slide 22 . The sliding cylinder 23 can drive the bolt tightening mechanism 21 to move on the slide 22 .

[0070] Specifically, the slide 22 is the installation base for the bolt tightening mechanism 21 and the sliding cylinder 23. The bolt tightening mechanism 21 is slidably installed on the slide 22, and the sliding cylinder 23 is fixedly installed on the slide 22, and the driving end of the sliding cylinder 23 is fixedly connected to the bolt tightening mechanism 21. The slide 22 has stable supporting performance and precise guiding function, which can ensure the smooth movement of the bolt tightening mechanism 21 on the slide 22. The sliding cylinder 23 is the power source for driving the bolt tightening mechanism 21 to move on the slide 22. It adopts the pneumatic principle and realizes reciprocating linear motion by driving compressed air. When the sliding cylinder 23 receives a control signal, it can quickly and accurately push the bolt tightening mechanism 21 to move on the slide 22.

[0071] During the assembly process of the bearing front cover, the control system first drives the bolt tightening mechanism 21 to move to the specified position through the sliding cylinder 23 to ensure that the top cover front disc 211 and the tightening wrench 212 can be accurately aligned with the bearing front cover and the bolt, and then controls the sliding cylinder 23 to continue to drive the bolt tightening mechanism 21 to move so that the top cover front disc 211 presses the bearing front cover to the wheelset, and at the same time the tightening wrench 212 starts to tighten the bolt. During the tightening process, the sliding cylinder 23 can also continue to drive the bolt tightening mechanism 21 to perform fine-tuning on the slide 22 as needed to ensure the accuracy and consistency of the bolt tightening.

[0072] This design forms a driving mechanism for the front disc 211 of the top cover through the drive of the sliding cylinder 23 and the guidance of the slide 22, so as to realize the precise movement and positioning of the bolt tightening mechanism 21 on the slide 22, thereby realizing precise and efficient bolt tightening operation.

[0073] In an example, Figures 1 to 3 As shown, the bolt assembly unit 20 further includes a servo mechanism 24 for driving the tightening wrench 212, and the servo mechanism 24 includes a servo motor 241, a driving toothed belt pulley 242, a driven toothed belt pulley 243 and a toothed belt 244;

[0074] The servo motor 241 is fixedly mounted on the fixed plate of the bolt tightening mechanism 21 , the driving toothed belt pulley 242 is mounted on the output shaft of the servo motor 241 , the driven toothed belt pulley 243 is mounted on the transmission shaft of the tightening wrench 212 , and the driven toothed belt pulley 243 is connected to the driving toothed belt pulley 242 via a toothed belt 244 .

[0075] Specifically, the servo mechanism 24 is the core component that drives the tightening head 212 to tighten the bolts. It uses a servo motor 241 as a power source and converts the rotational motion of the motor into the rotational motion of the tightening head 212 through a precise transmission mechanism to achieve precise tightening of the bolts.

[0076] The servo motor 241 is fixedly mounted on the fixing plate of the bolt tightening mechanism 21 to ensure its stability and reliability during operation. The servo motor 241 has the characteristics of high precision and high response speed, and can accurately control the rotation angle and speed of the output shaft according to the command of the control system.

[0077] The driving toothed belt pulley 242 is mounted on the output shaft of the servo motor 241 as the driving component of the transmission mechanism. The driven toothed belt pulley 243 is mounted on the transmission shaft of the tightening wrench 212 as the driven component of the transmission mechanism. The driven toothed belt pulley 243 is connected to the driving toothed belt pulley 242 through the toothed belt 244 to form a closed transmission loop. The toothed belt 244 has a precise tooth shape and excellent transmission performance, which can ensure accurate transmission between the driving wheel and the driven wheel.

[0078] During the assembly process of the bearing front cover, when the control system issues a tightening command, the servo motor 241 starts working, driving the output shaft to rotate, and the active toothed pulley 242 rotates with the rotation of the output shaft, and transmits the rotational motion to the driven toothed pulley 243 through the toothed belt 244. The driven toothed pulley 243 drives the transmission shaft of the tightening head 212 to rotate, thereby realizing the tightening operation of the bolt through the tightening head 212.

[0079] The servo mechanism 24 designed in this way can achieve accurate control of the bolt tightening torque and rotation speed, making the bolt tightening operation more accurate, reliable and efficient, thereby ensuring the quality and consistency of the bolt tightening.

[0080] In an example, Figure 1 and Figure 2 As shown, the assembly device also includes a visual recognition camera 30 and an automatic control system (not shown in the drawings). The visual recognition camera 30 is located between the wheelset positioning unit 10 and the bolt assembly unit 20. The visual recognition camera 30 is used to assist the automatic control system in controlling the wheelset positioning unit 10 and the bolt assembly unit 20 to cooperate in assembling the bearing front cover.

[0081] Specifically, the wheelset positioning unit 10, the bolt assembly unit 20 and the visual recognition camera 30 are all electrically connected to the automatic control system. The visual recognition camera 30, as the "eyes" of the device, is responsible for obtaining real-time image information of the wheelset and the front bearing cover; while the automatic control system, as the "brain" of the device, is responsible for processing image information and controlling the wheelset positioning unit 10 and the bolt assembly unit 20 to perform precise assembly operations.

[0082] The visual recognition camera 30 is located between the wheelset positioning unit 10 and the bolt assembly unit 20, so that the image of the wheelset and the bearing front cover can be captured, so as to identify the relative position relationship between the wheelset positioning unit 10 and the bolt assembly unit 20. The visual recognition camera 30 can use a high-resolution, high-sensitivity image sensor, which can capture clear images and transmit them to the automatic control system in real time. At the same time, the visual recognition camera 30 also has intelligent functions such as automatic focusing and automatic exposure to ensure that high-quality images can be obtained under different lighting conditions.

[0083] After the automatic control system receives the image transmitted by the visual recognition camera 30, it first performs image processing and analysis. Through the image recognition algorithm, the automatic control system can accurately identify the position, shape, size and other information of the wheelset and the bearing front cover. Then, the automatic control system calculates the precise position and angle that the wheelset positioning unit 10 and the bolt assembly unit 20 need to move and rotate based on this information.

[0084] During the entire assembly process, the visual recognition camera 30 and the automatic control system work continuously, constantly acquiring image information, analyzing and processing, sending instructions and controlling execution. The two work closely together and collaboratively, making the assembly process of the bearing front cover more precise, efficient and reliable.

[0085] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A bearing front cover assembly device, characterized in that: The assembly device comprises a wheelset positioning unit and a bolt assembly unit which are arranged opposite to each other, wherein: The wheelset positioning unit comprises a bracket and an axial positioning mechanism, wherein the bracket is used to support the wheelset, and the axial positioning mechanism is arranged at both ends of the bracket and is used to limit the axial position of the wheelset; The bolt assembly unit comprises a bolt tightening mechanism, which corresponds to the position of the bracket and can press the bearing front cover onto one end of the wheelset and tighten the bolts on the bearing front cover.

2. The bearing front cover assembly device according to claim 1, characterized in that: The wheelset positioning unit further comprises a base and a rotating and lifting mechanism, wherein the rotating and lifting mechanism is arranged on the base, and the bracket is arranged on the rotating and lifting mechanism, and the rotating and lifting mechanism can rotate and lift the bracket.

3. The bearing front cover assembly device according to claim 2, characterized in that: The rotary lifting mechanism includes a rotary assembly, which includes a gear arranged at the center of the base and a rotary cylinder and a rack both arranged on one side of the base. The rack is meshed with the gear, and the rotary cylinder can drive the gear to rotate by driving the rack.

4. The bearing front cover assembly device according to claim 3, characterized in that: The rotary lifting mechanism further comprises a lifting component, the lifting component is mounted on the gear, and the bracket is arranged at the top end of the lifting component.

5. The bearing front cover assembly device according to claim 2, characterized in that: The axial positioning mechanism includes two groups of axial positioning components located at both ends of the bracket, and the axial positioning components include a positioning cylinder and a pendulum block. The positioning cylinder is installed on the inner side of both ends of the base, and the positioning cylinder can drive the pendulum block to stick to the inner side of the rim of the wheelset.

6. The bearing front cover assembly device according to claim 2, characterized in that: The wheel pair positioning unit also includes two sets of pushing and blocking wheel assemblies located at both ends of the bracket, and the pushing and blocking wheel assemblies include a pushing wheel cylinder and a pushing wheel plate. The pushing wheel cylinder is located on the outer sides of both ends of the base, and the pushing wheel cylinder can drive the pushing wheel plate to block or push out the wheel pair.

7. The bearing front cover assembly device according to claim 1, characterized in that: The bolt tightening mechanism comprises a top cover front disc and a tightening wrench, wherein the top cover front disc is used to press the bearing front cover toward the wheelset, and the tightening wrench is used to tighten the bolts on the bearing front cover.

8. The bearing front cover assembly device according to claim 7, characterized in that: The bolt assembly unit further comprises a slide table and a sliding cylinder. The sliding cylinder and the bolt tightening mechanism are both mounted on the slide table. The sliding cylinder can drive the bolt tightening mechanism to move on the slide table.

9. The bearing front cover assembly device according to claim 7, characterized in that: The bolt assembly unit further comprises a servo mechanism for driving the tightening wrench, wherein the servo mechanism comprises a servo motor, a driving toothed belt pulley, a driven toothed belt pulley and a toothed belt; The servo motor is fixedly mounted on the fixing plate of the bolt tightening mechanism, the driving toothed belt pulley is mounted on the output shaft of the servo motor, the driven toothed belt pulley is mounted on the transmission shaft of the tightening wrench, and the driven toothed belt pulley is connected to the driving toothed belt pulley through the toothed belt transmission.

10. The bearing front cover assembly device according to claim 1, characterized in that: The assembly device also includes a visual recognition camera and an automatic control system. The visual recognition camera is located between the wheelset positioning unit and the bolt assembly unit. The visual recognition camera is used to assist the automatic control system in controlling the wheelset positioning unit and the bolt assembly unit to cooperate in assembling the bearing front cover.

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