Off-highway wheel assembly apparatus

Abstract

The application provides a non-highway wheel assembling device and belongs to the technical field of tire assembling devices. The device comprises a tire conveying line and a hub conveying line. A clamping device is arranged at the end of the hub conveying line. A general truss is arranged at the top of the clamping device. A tire conveying device is slidably connected to the general truss through a slide rail and a motor. The tire conveying device clamps a tire and transports the tire from the end of the tire conveying line to the top of the clamping device. A tire mounting device is arranged on the general truss for mounting the tire on the hub. The tire conveying line and the hub conveying line are both provided with a centering device for keeping the tire or the hub in the middle of the conveying line. The application has the advantages of high degree of automation, high assembling efficiency and the like.

Description

Technical Field

[0001] This invention belongs to the technical field of tire assembly equipment, and specifically refers to a non-highway wheel assembly equipment. Background Technology

[0002] Off-highway equipment, such as tractors, harvesters, and other off-highway vehicles, generally have wheels that are large in size and weight. These characteristics can easily lead to significant assembly difficulties during the continuous assembly of tire assemblies.

[0003] Meanwhile, existing off-road wheels are often assembled in a semi-automated manner, requiring the wheel hub and tire to be placed separately, resulting in high labor costs. Summary of the Invention

[0004] The purpose of this invention is to provide an off-road wheel assembly device that can realize automated transportation of wheel hubs and tires, while performing effective centering operations, facilitating subsequent assembly and placement, and significantly improving the assembly efficiency of off-road wheels.

[0005] The objective of this invention is achieved as follows: A non-highway wheel assembly device includes a tire conveying line and a hub conveying line. A clamping device is provided at the end of the hub conveying line. A main truss is provided on the top of the clamping device. A tire conveying device is slidably connected to the main truss via slide rails and a motor. The tire conveying device clamps a tire and transports it from the end of the tire conveying line to directly above the clamping device. A tire mounting device for assembling the tire onto the hub is provided on the main truss. Both the tire conveying line and the hub conveying line are provided with centering devices for keeping the tire or hub in the middle of the conveying line.

[0006] The invention is further configured such that the clamping device includes a clamping base plate, and the clamping base plate is circumferentially provided with three sets of hub clamping base plates with identical structures. The upper end of the hub clamping base plate is radially brushed with a claw fixing plate, and the inner end of the claw fixing plate is fixed with a hub support plate and a hub clamping claw. The claw fixing plate is provided with a tire support plate driven by a lifting cylinder. A tire support plate supported by a support rod is provided between adjacent hub clamping base plates. A radially arranged driving cylinder is fixed on any tire support plate, and the piston rod of the driving cylinder drives the opposing claw fixing plate to slide radially. A rotating bushing is rotatably connected to the middle of the clamping base plate. The rotating bushing is circumferentially hinged with three synchronous pull rods, and the outer ends of the three synchronous pull rods are respectively hinged to the side walls of the three claw fixing plates. When the driving cylinder drives the claw fixing plate to slide radially, the synchronous pull rods synchronously drive the other two synchronous pull rods to move synchronously through the rotating bushing, and the other two claw fixing plates slide radially synchronously.

[0007] The invention is further configured such that the lifting cylinder is radially disposed on the upper surface of the gripper fixing plate, a push-pull plate is fixed to the output end of the lifting cylinder, two sets of parallel "X"-shaped connecting rods are disposed between the gripper fixing plate and the tire support top plate, and a slide rail is provided between the gripper fixing plate and the tire support top plate for hinged sliding of the ends of the "X"-shaped connecting rods. The other two ends of the "X"-shaped connecting rods are respectively hinged to the upper surface of the gripper fixing plate and the lower surface of the tire support top plate. The two ends of the push-pull plate are respectively fixedly connected to the ends of the "X"-shaped connecting rods hinged on the slide rails. When the piston rod of the lifting cylinder pushes the push-pull plate to move radially, the "X"-shaped connecting rod drives the tire support top plate to move up and down.

[0008] The present invention is further configured such that the tire loading device includes a rotating tire loading mechanism slidably disposed on the main truss, and the rotating tire loading mechanism is located above the clamping device, and tire loading guide rod mechanisms located on both sides of the rotating tire loading mechanism are fixed on the main truss.

[0009] The invention is further configured such that the tire conveying device includes a clamping frame that moves up and down and back and forth via a slide rail and a cylinder mounted on a main truss. The clamping frame is provided with a left clamping arm and a right clamping arm that have the same mirror structure. The right clamping arm includes a clamping vertical arm that is longitudinally arranged on one side of the front end face of the clamping frame. The clamping vertical arm is tilted and oscillated by an inclined linkage mechanism on the clamping frame. The lower end of the side wall of the clamping vertical arm is fixed with a forward-extending clamping arm base. Two sets of rocker arm linkage mechanisms that are mirror-arranged and used to clamp the side wall of the tire are fixed on the clamping arm base. The clamping arm base includes a clamping horizontal arm that is fixed to the bottom of the clamping vertical arm. A horizontal arm base is fixed on the clamping horizontal arm. Several horizontal arm base stiffeners are fixed on the clamping horizontal arm between the horizontal arm base and the side wall of the horizontal arm base.

[0010] The invention is further configured such that the cross arm base includes a mounting cavity with an opening on the mounting side, and the two rocker arm linkage mechanisms are symmetrically arranged within the mounting cavity. The rocker arm linkage mechanism includes a first rocker arm cylinder and a second rocker arm cylinder hinged to the bottom of the mounting cavity. The end of the first rocker arm cylinder is hinged to an "S"-shaped rocker arm, and the end of the second rocker arm cylinder is hinged to the middle of the "S"-shaped rocker arm. A rocker arm connecting lug is coaxially hinged on the hinge shaft. An arc-shaped abutment groove is formed on one side of the rocker arm connecting lug. A straight rocker arm is hinged to the end of the "S"-shaped rocker arm, and a clamping rocker arm is hinged to the end of the straight rocker arm. The hinge is located in the middle of the clamping rocker arm. A clamping vertical arm for abutting against the tire sidewall is fixed to the outer end of the clamping rocker arm. A main rocker arm is hinged to the inner end of the clamping rocker arm. An abutment end that abuts against the abutment groove is provided on the inner side of the main rocker arm.

[0011] The present invention is further configured such that the clamping frame includes a top frame plate, a frame upright plate is fixed to the bottom of the top frame plate, a frame diagonal rod is connected between the front end of the top frame plate and the bottom of the frame upright plate, the tilting linkage mechanism includes a first tilting cylinder hinged to the top frame plate, the end of the first tilting cylinder is hinged to the top of the clamping upright arm via a connecting rod, a second tilting cylinder is hinged to the frame diagonal rod, the output end of the second tilting cylinder is hinged to a tilting connecting plate, the end of the tilting connecting plate is hinged to the rear side of the clamping upright arm, a support arm is hinged to the bottom of the frame upright plate, and the support arm is hinged to the middle of the tilting connecting plate.

[0012] The present invention is further configured such that the centering device includes a hub centering device and a tire centering device. The tire centering device includes a tire electric conveyor line, which includes several parallel conveyor rollers mounted on a conveyor frame. The conveyor frame has longitudinally arranged lifting cylinders fixed on its front and rear sides. A centering bracket is fixed between the drive ends of the two lifting cylinders. Centering slide plates driven by cylinders and sliding in opposite directions are provided on both sides of the centering bracket. Both centering slide plates are provided with longitudinally arranged centering short rods, and centering rollers are rotatably mounted on the top of the centering short rods. Two tire support plates are fixed on the centering bracket along the length direction of the conveyor rollers. When the tire is conveyed to a predetermined position above the centering bracket, the lifting cylinders drive the centering bracket and the tire support plates to move upward. The centering short rods move upward from the gap between adjacent conveyor rollers and extend into the toe of the tire.

[0013] The invention is further configured such that the centering bracket is provided with a slide rail for sliding the two centering slides, the cylinder is a side cylinder fixed to the two side walls of the centering bracket and arranged facing each other, the driving end of the side cylinder drives the centering slide to slide along the slide rail, a synchronous seat plate is fixed in the middle of the centering bracket, a synchronous gear is rotatably connected in the middle of the synchronous seat plate, racks are fixed at the bottom of the two centering slides respectively, the two racks are arranged facing each other, and both racks mesh with the synchronous gear, rack stops are fixed on the synchronous seat plate and arranged facing each other, and the rack stops are provided with guide grooves for the rack side walls to be embedded.

[0014] The present invention is further configured such that the rotary tire loading mechanism includes a rotary tire loading motor fixed on the main truss, the output end of the rotary tire loading motor is connected to a longitudinally arranged tire pressure guide wheel rod through a helical gear meshing, a guide rod cone wheel is fixed to the bottom side wall of the tire pressure guide wheel rod, and the tire loading guide rod mechanism includes a tire loading guide rod seat fixed on the main truss, and a tire pressure rocker arm driven by a connecting rod is slidably arranged on the tire loading guide rod seat.

[0015] The outstanding and beneficial technical effects of this invention compared to the prior art are: 1. The wheel assembly equipment provided by the present invention continuously transports tires and rims through tire conveying lines and rim conveying lines. The clamping device provides clamping for the rims. The tire conveying device accurately places the tires directly above the rims, and finally the tire mounting device achieves tire pressing. The equipment has a high degree of automation and efficiently realizes the assembly of off-road wheels.

[0016] 2. The clamping device provided by the present invention can use a single driving cylinder to synchronously drive three sets of clamping jaw fixing plates to move radially at the same time, which facilitates the effective clamping of wheel hubs with different gears and has a wider range of applications than traditional clamping devices; at the same time, the lifting cylinder is used to move the tire support plate up and down to achieve the tire tilting state, which facilitates the subsequent tire assembly and use.

[0017] 3. The lifting method further provided by the present invention uses a radially arranged lifting cylinder, and at the same time uses a push-pull plate to allow the X-shaped connecting rods on both sides of the slide rail to move smoothly when lifting the tire, making the lifting more stable.

[0018] 4. The tire mounting device provided in this invention uses a rotating tire mounting mechanism to embed the tire into the wheel hub, and at the same time uses a tire mounting guide rod mechanism to press the tire, which facilitates effective tire mounting.

[0019] 5. The tire conveying device provided in this invention uses a slide rail and a cylinder to move the clamping frame, which enables the tire to be effectively transported back and forth and up and down, making it easy to place accurately on top of the wheel hub; at the same time, it uses an inclined linkage mechanism to achieve the inclined placement of the tire, and a rocker arm linkage mechanism to achieve the stable gripping of the tire, improving the tire assembly efficiency.

[0020] 6. The present invention further provides a horizontal arm base and a corresponding horizontal arm base rib on the clamping horizontal arm to enhance the overall structural strength and ensure that it is not easy to fall off during clamping; in addition, the multi-rocker cylinder and multi-rocker arm method are used to realize the control of tire opening and angle and clamping, which can efficiently cope with various types of off-road wheel tires.

[0021] 7. The tilting linkage mechanism provided by the present invention uses a dual-cylinder method for effective driving, making it more stable when tilting; and further uses a support arm to effectively support the tilting connecting plate, thereby enhancing the stability after tilting.

[0022] 8. The centering device provided by the present invention is integrated below the conveyor line. The lifting structure occupies little space and avoids the need for the extension of the conveyor line required by traditional end centering devices. The device uses a centering roller to contact the inside of the tire bead, avoiding positioning deviation caused by gravity deformation of large tires.

[0023] 9. The present invention further employs a side cylinder to push the slide plate, ensuring that the two centering rollers can synchronously contact the tire toe; furthermore, the synchronous gear and the opposing rack are forced to work together to solve the problem of centering center offset caused by asynchronous cylinder action; at the same time, the guide groove on the rack stop block can facilitate the insertion of the rack side wall and prevent the rack from vibrating and disengaging from the synchronous gear. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure after the main truss of the present invention is hidden; Figure 3 This is a schematic diagram of the clamping device of the present invention; Figure 4 This is a partial structural schematic diagram of the clamping device of the present invention; Figure 5 This is a schematic diagram of the structure of a single hub clamping base plate of the present invention; Figure 6 This is a schematic diagram of the tire conveying device of the present invention; Figure 7 This is a partial structural schematic diagram of the tire conveying device of the present invention; Figure 8 This is a schematic diagram of the rocker arm linkage mechanism of the present invention; Figure 9 This is a schematic diagram of the structure of the rear side of the clamping frame of the present invention; Figure 10 This is a schematic diagram of the tire centering device of the present invention; Figure 11 This is a schematic diagram of a partial structure on the centering bracket of the present invention. Figure 1 ; Figure 12 This is a schematic diagram of a partial structure on the centering bracket of the present invention. Figure 2 ; Figure 13 This is a schematic diagram of the tire loading device of the present invention; Figure label: 1-Tire conveyor line; 2-Wheel hub conveyor line; 3-Clamping device; 30-Clamping base plate; 300-Rotating bushing; 301-Synchronous tie rod; 31-Wheel hub clamping base plate; 32-Claw fixing plate; 33-Wheel hub support plate; 34-Wheel hub clamping claw; 35-Tire support top plate; 36-Tire support plate; 37-"X" type connecting rod; 4-Main truss; 5-Tire conveying device; 50-Clamping frame; 500-Frame top plate; 501-Frame upright plate; 502-Frame diagonal bar; 503-First tilting cylinder; 504-Second tilting cylinder; 505-Tilting connecting plate; 51-Clamping upright arm; 52-Tilting linkage structure; 520-Clamping cross arm; 521-Cross arm base; 522-Cross arm base rib; 523-Mounting cavity; 53-Rocker arm linkage mechanism; 530-First rocker arm cylinder; 531-Second rocker arm cylinder; 532-“S”-shaped rocker arm; 533-Rocker arm connecting lug; 534-Abutment groove; 535-Straight rod rocker arm; 536-Clamping rocker arm; 537-Main rocker arm; 538-Abutment end; 6-Tire loading device; 60-Rotary tire loading mechanism; 600-Rotary tire loading motor; 601-Tire pressure guide wheel rod; 602-Guide rod cone wheel; 61-Tire loading guide rod mechanism; 610-Tire loading guide rod seat; 611-Tire pressure rocker arm; 7-Centering device; 70-Wheel hub centering device; 71-Tire centering device; 710-Electric tire conveyor line; 711-Centering bracket; 712-Centering slide plate; 713-Centering short rod; 714-Side cylinder; 715-Synchronizer seat plate; 716-Synchronizer gear; 717-Rack; 718-Rack stop block. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1 — Figure 13 : like Figure 1 and Figure 2 As shown, an off-highway wheel assembly device includes a tire conveying line 1 and a wheel hub conveying line 2. A clamping device 3 is provided at the end of the wheel hub conveying line 2. A main truss 4 is provided on the top of the clamping device 3. A tire conveying device 5 is slidably connected to the main truss 4 via a slide rail and a motor. The tire conveying device 5 clamps the tire and transports it from the end of the tire conveying line 1 to directly above the clamping device 3. A tire mounting device 6 for assembling the tire onto the wheel hub is provided on the main truss 4. Both the tire conveying line 1 and the wheel hub conveying line 2 are provided with centering devices 7 for keeping the tire or wheel hub in the middle of the conveying line.

[0026] Tires and rims are transported to tire conveyor line 1 and rim conveyor line 2 via material handling trolleys. Tire conveyor line 1 and rim conveyor line 2 provide continuous feeding. When a rim is conveyed from rim conveyor line 2 to clamping device 3, the rim is secured. After continuous transport on tire conveyor line 1, the tire is moved by tire conveying device 5 on the main truss 4, placing the tire onto the rim within the clamping device. The tire is then further installed by tire mounting device 6. After assembly, the tire can be clamped again by tire conveying device 5 to transport the tire assembly.

[0027] like Figure 3 , Figure 4 as well as Figure 5 As shown, the clamping device 3 includes a clamping base plate 30, and the clamping base plate 30 is circumferentially provided with three sets of identical wheel hub clamping base plates 31. The upper end of the wheel hub clamping base plate 31 is radially brushed with a claw fixing plate 32. The inner end of the claw fixing plate 32 is fixed with a wheel hub support plate 33 and a wheel hub clamping claw 34. The claw fixing plate 32 is provided with a tire support top plate 35 driven by a lifting cylinder. Between adjacent wheel hub clamping base plates 31, a tire support plate 36 supported by a support rod is provided. A radially arranged driving cylinder is fixed on any tire support plate 36. The piston rod of the driving cylinder drives the opposing gripper fixing plate 32 to slide radially. A rotating bushing 300 is rotatably connected to the middle of the clamping base plate 30. Three synchronous pull rods 301 are circumferentially hinged to the rotating bushing 300, and the outer ends of the three synchronous pull rods 301 are respectively hinged to the side walls of the three gripper fixing plates 32. When the driving cylinder drives the gripper fixing plate 32 to slide radially, the synchronous pull rods 301 drive the other two synchronous pull rods 301 to move synchronously through the rotating bushing 300, and the other two gripper fixing plates 32 slide radially synchronously.

[0028] In the above structure, the clamping device 3 uses a single drive cylinder to enable the three gripper fixing plates 32 to move radially simultaneously, thereby achieving internal support clamping of the large-size wheel hub.

[0029] Since off-road tires are often larger in size, the rim needs to be tilted to a certain extent. The lifting cylinder drives the tire support plate 35 to move upward, creating a tilt, which makes it easier for the tire to be installed on the rim. Furthermore, all three tire support plates 35 can achieve the effect of rising, which also makes the actual assembly process more flexible.

[0030] Preferably, the lifting cylinder is radially disposed on the upper end face of the gripper fixing plate 32, and a push-pull plate is fixed to the output end of the lifting cylinder. Two sets of parallel "X"-shaped connecting rods 37 are disposed between the gripper fixing plate 32 and the tire support plate 35. A slide rail is provided between the gripper fixing plate 32 and the tire support plate 35 for hinged sliding of the ends of the "X"-shaped connecting rods 37. The other two ends of the "X"-shaped connecting rods 37 are respectively hinged to the upper end face of the gripper fixing plate 32 and the lower end face of the tire support plate 35. The two ends of the push-pull plate are respectively fixedly connected to the ends of the "X"-shaped connecting rods 37 hinged on the slide rail. When the piston rod of the lifting cylinder pushes the push-pull plate to move radially, the "X"-shaped connecting rods 37 drive the tire support plate 35 to move up and down.

[0031] During implementation, the aforementioned lifting cylinder is driven radially, saving longitudinal installation space and keeping the lifting distance within a suitable range. At the same time, the "X"-shaped connecting rod 37 is smoother and more stable during the lifting process.

[0032] Furthermore, a stop plate is provided at the inner end of the clamping jaw fixing plate. The bottom of the wheel hub support plate 33 and the wheel hub clamping jaw 34 are fixed to the upper end of the stop plate by bolts, and several screw holes are opened on the stop plate. This method can adapt to different models of wheel hubs and has a wider range of applications.

[0033] like Figure 13 As shown, the tire loading device 6 includes a rotating tire loading mechanism 60 that is slidably disposed on the main truss 4, and the rotating tire loading mechanism 60 is located above the clamping device 3. Tire loading guide rod mechanisms 61 located on both sides of the rotating tire loading mechanism 60 are fixed on the main truss 4.

[0034] In the above structure, the rotary tire mounting mechanism 60 can realize tire pressing, and the tire mounting guide rod mechanism 61 can abut against the edge of the tire to ensure normal tire pressing.

[0035] like Figures 6 to 9 As shown, the tire conveying device 5 includes a clamping frame 50 that moves up and down and back and forth via a slide rail and a cylinder mounted on the main truss 4. The clamping frame 50 is provided with a left clamping arm and a right clamping arm with the same mirror structure. The right clamping arm includes a clamping vertical arm 51 that is longitudinally arranged on one side of the front end face of the clamping frame 50. The clamping vertical arm 51 is tilted and swung by an inclined linkage mechanism 52 on the clamping frame 50. The lower end of the side wall of the clamping vertical arm 51 is fixed with a clamping arm base that extends forward. Two sets of rocker arm linkage mechanisms 53 that are mirror-arranged and used to clamp the side wall of the tire are fixed on the clamping arm base. The clamping arm base includes a clamping horizontal arm 520 fixed to the bottom of the clamping vertical arm 51. A horizontal arm base 521 is fixed on the clamping horizontal arm 520. Several horizontal arm base ribs 522 are fixed on the clamping horizontal arm 520 and between the horizontal arm base 521 and the side wall of the horizontal arm base 521.

[0036] During implementation, the clamping frame 1 moves up and down and back and forth via slide rails and cylinders, enabling the device to move back and forth between the clamping device and the tire conveying line. The rocker arm linkage mechanism 53 is used to clamp and hold the tire, preventing it from falling off during movement. Furthermore, the clamping arm base includes a clamping crossarm 520 for assembling the tooling for clamping the tire; and a crossarm base rib 522 fixed to the clamping crossarm 520 enhances the overall structural strength.

[0037] Preferably, the crossarm base 521 includes a mounting cavity 523 with an opening on the mounting side. The two rocker arm linkage mechanisms 53 are symmetrically arranged within the mounting cavity 523. Each rocker arm linkage mechanism 53 includes a first rocker arm cylinder 530 and a second rocker arm cylinder 531 hinged to the bottom of the mounting cavity 523. The end of the first rocker arm cylinder 530 is hinged to an "S"-shaped rocker arm 532, and the end of the second rocker arm cylinder 531 is hinged to the middle of the "S"-shaped rocker arm 532. A rocker arm connecting lug 53 is coaxially hinged to the hinge shaft. 3. An arc-shaped abutment groove 534 is formed on one side of the rocker arm connecting ear 533. A straight rocker arm 535 is hinged to the end of the "S"-shaped rocker arm 532. A clamping rocker arm 536 is hinged to the end of the straight rocker arm 535. The hinge is located in the middle of the clamping rocker arm 536. A clamping vertical arm for abutting against the tire sidewall is fixed to the outer end of the clamping rocker arm 536. A main rocker arm 537 is hinged to the inner end of the clamping rocker arm 536. An abutment end 538 that abuts against the abutment groove 534 is provided on the inner side of the main rocker arm 537.

[0038] In the above structure, two sets of mirror-arranged rocker arm linkage mechanisms 53 are provided in the mounting cavity 523, and each rocker arm linkage mechanism includes two sets of rocker arm cylinders. When the first rocker arm cylinder 530 is driven, it drives the rotation of the end of the S-shaped rocker arm 532. The S-shaped rocker arm will then drive the movement of the straight rocker arm 535 to achieve different opening and closing angles. The second rocker arm cylinder 531 drives the rotation of the rocker arm connecting ear 533. At the same time, the abutment groove 534 on one side drives the abutment end 538 to move, and further drives the rotation of the main rocker arm 537, so as to achieve a stable grip of the tire sidewall by the two sets of rocker arm linkage mechanisms 53.

[0039] Preferably, the clamping frame 50 includes a top frame plate 500, a frame upright plate 501 fixed to the bottom of the top frame plate 500, a frame diagonal rod 502 connecting the front end of the top frame plate 500 and the bottom of the frame upright plate 501, the tilting linkage mechanism 52 includes a first tilting cylinder 503 hinged to the top frame plate 500, the end of the first tilting cylinder 503 being hinged to the top of the clamping upright arm 51 via a connecting rod, a second tilting cylinder 504 hinged to the frame diagonal rod 502, an tilting connecting plate 505 hinged to the output end of the second tilting cylinder 504, the end of the tilting connecting plate 505 being hinged to the rear side of the clamping upright arm 51, a support arm 506 hinged to the bottom of the frame upright plate 501, and the support arm 506 being hinged to the middle of the tilting connecting plate 505.

[0040] In the above structure, the tilting linkage mechanism 52 enables the clamped tire to be tilted, making it convenient to place it tilted above the wheel hub; at the same time, the support arm 506 located on the frame upright plate 501 can effectively support the linkage mechanism.

[0041] like Figures 10 to 12 As shown, the centering device 7 includes a hub centering device 70 and a tire centering device 71. The tire centering device 71 includes a tire electric conveyor line 710, which includes several parallel conveyor rollers mounted on a conveyor frame. The conveyor frame has longitudinally arranged lifting cylinders fixed on its front and rear sides. A centering bracket 711 is fixed between the drive ends of the two lifting cylinders. Centering slide plates 712 driven by cylinders and sliding in opposite directions are arranged on both sides of the centering bracket 711. Both centering slide plates 712 are provided with longitudinally arranged centering short rods 713, and a centering roller is rotatably mounted on the top of the centering short rods 713. Two tire support plates are fixed on the centering bracket 711 along the length direction of the conveyor rollers. When the tire is conveyed to a predetermined position above the centering bracket 711, the lifting cylinders drive the centering bracket 711 and the tire support plates to move upward. The centering short rods 713 move upward from the gap between adjacent conveyor rollers and extend into the tire's toe.

[0042] During implementation, the tire is continuously fed via conveyor rollers on an electric conveyor line. Once a signal indicating the material has reached the designated position is received, the tire will stop directly above the centering bracket 711. Two lifting cylinders drive the centering bracket upwards, simultaneously lifting the tire support plate through the gap between adjacent conveyor rollers 11. The centering roller on the centering rod 713 extends from the tire's toe and is then driven by the cylinders to complete the centering operation. Further lowering of the lifting cylinders allows the tire to continue transporting, facilitating subsequent clamping.

[0043] Preferably, the centering bracket 711 is provided with a slide rail for sliding the two centering slide plates 712. The cylinder is a side cylinder 714 fixed to the two side walls of the centering bracket 711 and arranged facing each other. The driving end of the side cylinder 714 drives the centering slide plate 712 to slide along the slide rail. A synchronous seat plate 715 is fixed in the middle of the centering bracket 711. A synchronous gear 716 is rotatably connected in the middle of the synchronous seat plate 715. The bottom of the two centering slide plates 712 is fixed with racks 717 respectively, and the two racks 717 are arranged facing each other. Both racks 717 mesh with the synchronous gear 716. A rack stop block 718 is fixed on the synchronous seat plate 715 and is arranged facing each other. The rack stop block 718 is provided with a guide groove for the side wall of the rack 717 to be embedded.

[0044] The above structure improves the overall stability and synchronization.

[0045] The hub centering device 70 includes a centering structure set on the hub conveyor line 2 and a gripping structure set on the main truss on the hub conveyor line. The two structures can facilitate the centering operation of the hub on the line. After the centering operation is completed, the hub is effectively gripped and placed in the clamping device.

[0046] Preferably, the rotary tire loading mechanism 60 includes a rotary tire loading motor 600 fixed on the main truss 4. The output end of the rotary tire loading motor 600 is connected to a longitudinally arranged tire pressure guide wheel rod 601 through a helical gear. A guide rod cone wheel 602 is fixed to the side wall at the bottom of the tire pressure guide wheel rod 601. The tire loading guide rod mechanism 61 includes a tire loading guide rod seat 610 fixed on the main truss 4. A tire pressure rocker arm 611 driven by a connecting rod is slidably arranged on the tire loading guide rod seat 610.

[0047] In the above structure, the two tire mounting guide rod mechanisms and the rotating tire mounting mechanism are installed with a certain curvature, which is suitable for the effective assembly of tires.

[0048] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An off-highway wheel assembly device, characterized in that, The system includes a tire conveying line (1) and a hub conveying line (2). A clamping device (3) is located at the end of the hub conveying line (2). A main truss (4) is located on the top of the clamping device (3). A tire conveying device (5) is slidably connected to the main truss (4) via a slide rail and a motor. The tire conveying device (5) clamps the tire and transports it from the end of the tire conveying line (1) to the top of the clamping device (3). A tire mounting device (6) for mounting the tire onto the hub is provided on the main truss (4). Both the tire conveying line (1) and the hub conveying line (2) are provided with centering devices (7) for keeping the tire or hub in the middle of the conveying line. The clamping device (5) is located at the end of the hub conveying line (2). The device (3) includes a clamping base plate (30), and three sets of identical wheel hub clamping base plates (31) are arranged circumferentially on the clamping base plate (30). A clamping claw fixing plate (32) is radially brushed on the upper end of the wheel hub clamping base plate (31). A wheel hub support plate (33) and a wheel hub clamping claw (34) are fixed on the inner end of the clamping claw fixing plate (32). A tire support plate (35) driven by a lifting cylinder is provided on the clamping claw fixing plate (32). A tire support plate (36) supported by a support rod is provided between adjacent wheel hub clamping base plates (31). A radially arranged driving cylinder is fixed on any tire support plate (36), and the piston rod of the driving cylinder drives the opposing clamping claw fixing plate (32). The clamping base plate (30) is rotatably connected to a rotating bushing (300) in the middle. Three synchronous pull rods (301) are circumferentially hinged to the rotating bushing (300), and the outer ends of the three synchronous pull rods (301) are respectively hinged to the side walls of the three jaw fixing plates (32). When the driving cylinder drives the jaw fixing plate (32) to slide radially, the synchronous pull rods (301) drive the other two synchronous pull rods (301) to move synchronously through the rotating bushing (300), and the other two jaw fixing plates (32) slide radially synchronously. The lifting cylinder is radially arranged on the upper surface of the jaw fixing plate (32), and a push-pull plate is fixed to the output end of the lifting cylinder. Two sets of parallel "X"-shaped connecting rods (37) are provided between the gripper fixing plate (32) and the tire support plate (35). The gripper fixing plate (32) and the tire support plate (35) are provided with slide rails facing each other for the hinged sliding of the ends of the "X"-shaped connecting rods (37). The other two ends of the "X"-shaped connecting rods (37) are respectively hinged to the upper end face of the gripper fixing plate (32) and the lower end face of the tire support plate (35). The two ends of the push-pull plate are respectively fixedly connected to the ends of the "X"-shaped connecting rods (37) hinged on the slide rails. When the piston rod of the lifting cylinder pushes the push-pull plate to move radially, the "X"-shaped connecting rods (37) drive the tire support plate (35) to move up and down.

2. The off-highway wheel assembly equipment according to claim 1, characterized in that, The tire loading device (6) includes a rotating tire loading mechanism (60) that is slidably disposed on the main truss (4), and the rotating tire loading mechanism (60) is located above the clamping device (3). Tire loading guide rod mechanisms (61) located on both sides of the rotating tire loading mechanism (60) are fixed on the main truss (4).

3. The off-highway wheel assembly equipment according to claim 1, characterized in that, The tire conveying device (5) includes a clamping frame (50) that moves up and down and back and forth via a slide rail and a cylinder mounted on the main truss (4). The clamping frame (50) is provided with a left clamping arm and a right clamping arm with the same mirror structure. The right clamping arm includes a clamping vertical arm (51) that is longitudinally arranged on one side of the front end face of the clamping frame (50). The clamping vertical arm (51) is tilted and swung by an inclined linkage mechanism (52) on the clamping frame (50). The lower end of the side wall of the clamping vertical arm (51) is fixed with a clamping arm base that extends forward. Two sets of rocker arm linkage mechanisms (53) that are mirror-arranged and used to clamp the side wall of the tire are fixed on the clamping arm base. The clamping arm base includes a clamping horizontal arm (520) fixed to the bottom of the clamping vertical arm (51). A horizontal arm base (521) is fixed on the clamping horizontal arm (520). Several horizontal arm base ribs (522) are fixed on the clamping horizontal arm (520) and between the horizontal arm base (521) and the side wall of the horizontal arm base (521).

4. The off-highway wheel assembly equipment according to claim 3, characterized in that, The horizontal arm base (521) includes a mounting cavity (523) with an opening on the mounting side. Two rocker arm linkage mechanisms (53) are symmetrically positioned within the mounting cavity (523). Each rocker arm linkage mechanism (53) includes a first rocker arm cylinder (530) and a second rocker arm cylinder (531) hinged to the bottom of the mounting cavity (523). The end of the first rocker arm cylinder (530) is hinged to an "S"-shaped rocker arm (532), and the end of the second rocker arm cylinder (531) is hinged to the middle of the "S"-shaped rocker arm (532). A rocker arm connecting lug (533) is coaxially hinged to the hinge shaft. An arc-shaped abutment groove (534) is formed on one side of the arm connecting ear (533). The end of the "S"-shaped rocker arm (532) is hinged to a straight rocker arm (535). The end of the straight rocker arm (535) is hinged to a clamping rocker arm (536), and the hinge is located in the middle of the clamping rocker arm (536). The outer end of the clamping rocker arm (536) is fixed with a clamping vertical arm for abutting against the tire sidewall. The inner end of the clamping rocker arm (536) is hinged to a main rocker arm (537). The inner side of the main rocker arm (537) is provided with an abutment end (538) that abuts against the abutment groove (534).

5. The off-highway wheel assembly equipment according to claim 3, characterized in that, The clamping frame (50) includes a top frame plate (500) at the top, a frame upright plate (501) fixed to the bottom of the top frame plate (500), and a frame diagonal rod (502) connecting the front end of the top frame plate (500) and the bottom of the frame upright plate (501). The tilting linkage mechanism (52) includes a first tilting cylinder (503) hinged to the top frame plate (500), and the end of the first tilting cylinder (503) is hinged to the top frame plate (500) via a connecting rod. At the top of the clamping arm (51), a second tilting cylinder (504) is hinged to the frame inclined rod (502). The output end of the second tilting cylinder (504) is hinged to an inclined connecting plate (505). The end of the inclined connecting plate (505) is hinged to the rear side of the clamping arm (51). A support arm (506) is hinged to the bottom of the frame upright plate (501), and the support arm (506) is hinged to the middle part of the inclined connecting plate (505).

6. The off-highway wheel assembly equipment according to claim 1, characterized in that, The centering device (7) includes a hub centering device (70) and a tire centering device (71). The tire centering device (71) includes a tire electric conveyor line (710), which includes several parallel conveyor rollers mounted on a conveyor frame. Longitudinally arranged lifting cylinders are fixed on both the front and rear sides of the conveyor frame. A centering bracket (711) is fixed between the drive ends of the two lifting cylinders. Centering slide plates (712) driven by cylinders and sliding in opposite directions are provided on both sides of the centering bracket (711). Both of the two centering slides (712) are provided with longitudinally arranged centering short rods (713), and centering rollers are rotatably installed on the top of the centering short rods (713). Two tire support plates are fixed on the centering bracket (711) along the length direction of the conveying roller. When the tire is conveyed to the predetermined position above the centering bracket (711), the lifting cylinder drives the centering bracket (711) and the tire support plates to move up. The centering short rods (713) move upward from the gap between the adjacent conveying rollers and extend into the toe of the tire.

7. The off-highway wheel assembly equipment according to claim 6, characterized in that, The centering bracket (711) is provided with a slide rail for sliding the two centering slide plates (712). The cylinder is a side cylinder (714) fixed to the two side walls of the centering bracket (711) and arranged facing each other. The driving end of the side cylinder (714) drives the centering slide plate (712) to slide along the slide rail. A synchronous seat plate (715) is fixed in the middle of the centering bracket (711). A synchronous gear (716) is rotatably connected in the middle of the synchronous seat plate (715). A rack (717) is fixed at the bottom of the two centering slide plates (712) respectively. The two racks (717) are arranged facing each other and both racks (717) mesh with the synchronous gear (716). A rack stop block (718) is fixed on the synchronous seat plate (715) and is arranged facing each other. A guide groove for the rack (717) to be embedded in the side wall of the rack is opened on the rack stop block (718).

8. The off-highway wheel assembly equipment according to claim 2, characterized in that, The rotary tire loading mechanism (60) includes a rotary tire loading motor (600) fixed on the main truss (4). The output end of the rotary tire loading motor (600) is connected to a longitudinally arranged tire pressure guide wheel rod (601) through a helical gear meshing. A guide rod cone wheel (602) is fixed on the side wall at the bottom of the tire pressure guide wheel rod (601). The tire loading guide rod mechanism (61) includes a tire loading guide rod seat (610) fixed on the main truss (4). A tire pressure rocker arm (611) driven by a connecting rod is slidably arranged on the tire loading guide rod seat (610).

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