Tire dynamic balance detector

Abstract

The invention discloses a tire dynamic balance detection machine. The line body lifting mechanism is arranged on the equipment rack, and a conveying line is arranged on the line body lifting mechanism; a test station and a pretreatment station are respectively arranged on two sides of the equipment rack, the dynamic balance test bench is arranged on one side, a swing table, a main shaft, a vibration sensor and a lower clamp are arranged in the dynamic balance test bench, an upper rim lifting mechanism is arranged on the upper side of the test station, the upper rim lifting mechanism is laterally hung on the equipment rack, and a tire unloading mechanism is arranged at the bottom of the upper rim lifting mechanism. The upper clamp and the lower clamp are matched to be used for floating clamping, and meanwhile the horizontal moving function, the centering function, the anti-collision function, the anti-falling function and the clutch function are achieved. And a tire centering mechanism, a tire lubricating mechanism and an inflating system are arranged at the pretreatment station. According to the invention, a clamp with a higher-rigidity structure clamping relation is adopted, the dynamic balance test bench is externally arranged, and the upper clamp is laterally hung, so that the two-side balance of the equipment is effectively improved, the fault rate of multi-station linkage is reduced, and the operation of the equipment is more reliable.

Description

Technical Field

[0001] The present invention relates to the technical field of dynamic balance detection, and relates to a tire dynamic balance detector. Background Art

[0002] At present, there is no mature online tire dynamic balance detector in China. The dynamic balance detectors currently used by tire manufacturing enterprises still rely on imported equipment, and the imported equipment currently in use has the following problems:

[0003] 1. The rigidity of the test fixture is insufficient, the test accuracy is unstable, and the fixture accuracy depends on high-precision machining, resulting in high manufacturing costs;

[0004] 2. The core test station of the equipment is surrounded by a frame, resulting in poor maintainability. Maintenance personnel need to drill into a narrow space for maintenance work, which is relatively dangerous;

[0005] 3. The imported equipment consists of multiple independent stations, with poor integration and large floor space;

[0006] 4. Due to the independence between stations, the equipment migration process is cumbersome;

[0007] 5. The fixture has no collision warning mechanism, and production accidents are likely to occur. Summary of the Invention

[0008] In order to solve the problems existing in the background art, the present invention provides a tire dynamic balance detector.

[0009] The present invention is a tire dynamic balance detector with a new architecture, aiming to fill the domestic equipment gap. At the same time, higher-rigidity fixtures, innovative equipment architectures, and high-integration equipment layouts are adopted to solve the defects of current imported equipment.

[0010] The technical solution adopted by the present invention is:

[0011] It includes an equipment frame, a conveyor line, a test station, and a pre-treatment station; a line lifting mechanism is installed in the middle of the equipment frame, and a conveyor line for transporting test tires is installed on the line lifting mechanism.

[0012] On one side of the equipment frame, a test station is arranged, and a tire unloading mechanism, an upper rim lifting mechanism, a dynamic balance test bench, an upper fixture and a lower fixture are provided at the test station; a dynamic balance test bench is arranged on the lower side of the test station, and the dynamic balance test bench is installed on one side of the equipment frame. Inside the dynamic balance test bench, there is a swing table, a main shaft and a vibration sensor. A lower fixture for cooperatively connecting the lower end of the test tire is installed on the dynamic balance test bench. An upper rim lifting mechanism is arranged on the upper side of the test station. The upper rim lifting mechanism is side-hung and installed on the equipment frame on the same side as the dynamic balance test bench. A tire unloading mechanism is arranged at the bottom of the upper rim lifting mechanism. An upper fixture for cooperatively connecting the upper end of the test tire is installed on the upper rim lifting mechanism. The upper fixture and the lower fixture are cooperatively connected to form a tire test cooperating fixture. The tire test cooperating fixture is used for floating clamping and simultaneously realizes functions of horizontal movement, centering, anti-collision, anti-falling and clutch.

[0013] On the bottom of the other side of the equipment frame, a pre-treatment station is arranged, and a tire centering mechanism, a tire lubricating mechanism and an inflation system are provided at the pre-treatment station; the tire lubricating mechanism is arranged above the conveying line, a tire centering mechanism is arranged on the side of the tire lubricating mechanism, and an inflation system for inflating the test tire is installed on the equipment frame above the pre-treatment station.

[0014] The dynamic balance test bench includes a base, a swing table, a main shaft and a vibration sensor; a lower fixture is coaxially sleeved on the upper end of the main shaft; the lower part of the main shaft is connected to the base through the swing table. Specifically, swing tables are installed on both sides of the main shaft, and a vibration sensor for detecting the vibration of the swing table is installed beside each swing table; the swing table can translate along the short side direction of itself and yaw along the long side. The two vibration sensors corresponding to the two swing tables are arranged at the same measuring point in a horizontal and vertical orthogonal manner to respectively receive the vibration signals of the translation and yaw of the two swing tables.

[0015] The line lifting mechanism includes a lifting component, a distance adjusting component and a conveying line mounting seat; the lifting component is installed on the equipment frame, the distance adjusting component is installed on the upper part of the lifting component, the conveying line mounting seat is installed above the distance adjusting component, and two conveying lines are installed above the conveying line mounting seat; the lifting component drives the distance adjusting component, the conveying line mounting seat and the conveying lines to move up and down together, and the distance adjusting component drives the two conveying lines on the conveying line mounting seat to move horizontally closer to or away from each other.

[0016] A camera is installed on the equipment frame directly above the tire lubrication mechanism, and a tire centering mechanism is installed on the equipment frames on both sides above the tire lubrication mechanism; the tire centering mechanism includes a cylinder, a long connecting rod, a short connecting rod, a bearing seat and two centering modules; the two centering modules are respectively installed on the equipment frames on both sides above the tire lubrication mechanism, and each centering module includes two gear arm components. Each gear arm component is mainly composed of an arm and a gear fixedly connected to one end of the arm. The gears of the two gear arm components in the same centering module mesh with each other; the cylinder is installed on the equipment frame, the piston rod of the cylinder is connected to the gear of one gear arm component in one side centering module, and an L-shaped bearing seat is hingedly installed on the gear of one gear arm component in the other side centering module. The gear of the other gear arm component in one side centering module is synchronously rotatably connected to the bearing seat through a long connecting rod, and the bearing seat is synchronously rotatably connected to the gear of the other gear arm component in the other side centering module through a short connecting rod.

[0017] The tire unloading mechanism includes a tire unloading pressing plate, a tire unloading claw width adjustment component, tire unloading claws and a lifting cylinder. The lifting cylinder is fixed on the upper rim lifting mechanism, the piston rod of the lifting cylinder is fixedly connected to the tire unloading pressing plate, the tire unloading claw width adjustment component and the two tire unloading claws are both installed on the tire unloading pressing plate, and the tire unloading claw width adjustment component is respectively connected to the two tire unloading claws.

[0018] The upper rim lifting mechanism is an equipment mechanism with a motor and is controlled by the motor to drive up and down along the gravity direction; the lower fixture includes a lower rim coaxially and fixedly sleeved outside the main shaft, and during dynamic balance testing, the test tire is clamped between the upper rim and the lower rim of the upper fixture.

[0019] The upper fixture includes an upper fixture mounting plate, a positioning and adjusting plate, a collision buffer plate, a horizontal adjusting seat, a center adjusting seat, a collision buffer spring, a fixture unlocking cylinder, a parallel gripper, an upper fixture clutch ring, an upper fixture mandrel, an upper rim, a fixture lock, an unlocking press head, a locking button, and a transmission shaft; the upper fixture mounting plate is fixedly installed on the upper rim lifting mechanism, and the upper fixture mounting plate, the positioning and adjusting plate, and the collision buffer plate are arranged at intervals from bottom to top, and a horizontal adjusting seat, a center adjusting seat, and a collision buffer spring for horizontal adjustment, centering, and anti-falling are simultaneously provided between them: the bottom surface of the positioning and adjusting plate is relatively horizontally movably installed on the upper fixture mounting plate through the horizontal adjusting seats at each corner, and the horizontal attitude of the positioning and adjusting plate relative to the upper fixture mounting plate is adjusted through the horizontal adjusting seats, so that the positioning and adjusting plate is horizontally parallel to the lower fixture and the test tire; center adjusting seats and bolts are installed at each corner of the top surface of the positioning and adjusting plate, and the horizontal movement of the positioning and adjusting plate relative to the upper fixture mounting plate is adjusted through the center adjusting seats, so that the center of the positioning and adjusting plate is aligned with the lower fixture and the test tire below; the collision buffer plate is elastically installed on the positioning and adjusting plate through the collision buffer springs at each corner, and the floating interval distance of the collision buffer plate relative to the upper fixture mounting plate is adjusted through the collision buffer springs when the upper rim lifting mechanism works;

[0020] A parallel gripper is fixedly installed at the lower end of the collision buffer plate. The lower end of the parallel gripper passes downward through the upper fixture mounting plate and is installed with an upper fixture clutch ring. The upper fixture clutch ring is used to clamp the upper fixture mandrel. At the same time, an upper fixture anti-falling ring is fixedly installed at the lower end of the parallel gripper. The top end of the upper fixture mandrel is arranged on the step formed by the anti-falling ring to be restricted from moving downward; the fixture unlocking cylinder is fixedly installed on the collision buffer plate. The lower end of the piston rod of the fixture unlocking cylinder passes downward through the collision buffer plate and is fixedly connected to the upper end of the unlocking press head in the central through hole inside the parallel gripper. The unlocking press head is driven by the fixture unlocking cylinder to move up and down in the central through hole inside the parallel gripper; a central through hole is opened in the upper fixture mandrel, and a transmission shaft is installed in the central through hole. The upper rim is coaxially and fixedly sleeved outside the upper fixture mandrel. The upper end of the transmission shaft extends out of the central through hole of the upper fixture mandrel and is fixedly installed with a locking button. The locking button is used to make pressure contact with the unlocking press head; the middle part of the transmission shaft is connected to the central through hole of the upper fixture mandrel through a lock buckle extension spring. The lower end of the transmission shaft passes through the central through hole of the upper fixture mandrel and is installed with a fixture lock; the lower ends of the upper fixture mandrel and the transmission shaft pass through the lower rim of the lower fixture and extend into the central through hole of the main shaft, and are clamped and fixedly connected through a lock buckle extension spring and the fixture lock.

[0021] An unpenetrated groove is opened on the top surface of the upper fixture mounting plate, and a horizontal adjusting seat is embedded in the groove. The horizontal adjusting seat is mainly composed of two ring blocks that are rotationally connected by threads. The lower ring block is embedded in the groove, and the top surface of the upper ring block is connected to the bottom surface of the positioning and adjusting plate;

[0022] A non-through blind hole is provided on the top surface of the positioning and adjusting plate. A center adjusting seat is embedded in the blind hole. A boss is provided at the lower end of the center adjusting seat. The boss is only rotatably embedded in the blind hole, so that the center adjusting seat can rotate in the blind hole around its own central axis. A waist-shaped groove that penetrates up and down is provided in the middle of the center adjusting seat. The bolt passes downward through the waist-shaped groove and then sequentially passes through the positioning and adjusting plate, the horizontal adjusting seat, and the upper fixture mounting plate and is threadedly fixed to the upper rim lifting mechanism above;

[0023] The collision buffer spring is sleeved outside the spring bolt and is located above the collision buffer plate. The spring bolt passes downward through the collision buffer spring and then movably passes through the collision buffer plate and is threadedly connected to the threaded hole in the positioning and adjusting plate;

[0024] A collision detection sensor for detecting whether there is a collision during the closing process of the upper and lower fixtures is provided between the collision buffer plate and the positioning and adjusting plate. The collision detection sensor detects the distance between the collision buffer plate and the positioning and adjusting plate in real time; when the distance detected in real time by the collision detection sensor is greater than the preset distance threshold, the collision detection sensor generates a signal to control the motor in the upper rim lifting mechanism to stop working, that is, to drive the upper rim lifting mechanism to stop descending.

[0025] A parallel gripper is fixedly installed at the lower end of the collision buffer plate. The parallel gripper passes downward through the upper fixture mounting plate. The edge at the lower end of the parallel gripper is connected and installed with an upper fixture clutch ring composed of a plurality of clutch blocks. The parallel gripper is used to drive the plurality of clutch blocks to move closer to or away from the center; the upper fixture clutch ring is used to clamp the upper end of the upper fixture mandrel;

[0026] At the same time, an upper fixture anti-falling ring composed of a plurality of anti-falling blocks is provided in the middle at the lower end of the parallel gripper. A larger-diameter outer flange is provided at the upper end of the upper fixture mandrel. A horizontal flange is provided at the lower end of each anti-falling block. The horizontal flange extends toward the center and supports and connects the lower step surface of the outer flange at the top of the upper fixture mandrel, so that the downward movement of the upper fixture mandrel is limited.

[0027] The tire test fitting fixture formed by the cooperation of the above upper fixture and lower fixture of the present invention simultaneously has functions such as horizontal, centering, anti-collision, anti-falling, and clutch, and can also perform controllable and adjustable cooperation.

[0028] A locking button extension spring is sleeved on the top end of the transmission shaft connected to the bottom end of the locking button. The central through hole of the upper fixture mandrel is a stepped hole that is larger at the top and smaller at the bottom. The upper and lower ends of the locking button extension spring are elastically connected to the stepped surfaces between the locking button and the transmission shaft and the stepped surface of the stepped hole of the upper fixture mandrel respectively. At the same time, the lower ends of the upper fixture mandrel and the transmission shaft are used to pass through the lower rim of the lower fixture and extend into the central through hole of the main shaft. The inner wall of the central through hole of the main shaft is provided with a tooth groove structure. The lower end of the transmission shaft is set as a tapered pituitary that is smaller at the top and larger at the bottom. The bottom of the central through hole of the upper fixture mandrel is opened as a tapered cavity that fits the shape of the pituitary. The tapered pituitary is embedded in the tapered cavity. A horizontally penetrating radial channel is opened on the inner wall of the central through hole of the upper fixture mandrel at the tapered cavity. A fixture lock is installed in the radial channel. The fixture lock can move horizontally in the radial channel. The inner end of the fixture lock is set as a conical surface for mating contact with the tapered pituitary. The outer end of the fixture lock is provided with a tooth groove structure for mating with the sawtooth structure on the inner wall of the central through hole of the main shaft.

[0029] And the tooth groove structure on the inner wall of the central through hole of the main shaft is set as a multi-level tooth groove structure with different heights along the up and down axial directions. By adjusting the different axial positions of the locking button and the transmission shaft extending into the central through hole of the main shaft, the fixture lock is engaged in the tooth groove structures at different heights, thereby adjusting the distance between the upper fixture and the lower fixture, and thus realizing different clamping forces and clamping of test tires with different sizes.

[0030] The beneficial effects of the present invention are:

[0031] 1. Adopt a fixture with a higher rigid structure clamping relationship: The present invention adopts high rigidity and high strength, which can make the test results more repetitive and accurate, avoid relying on processing accuracy, and reduce processing costs.

[0032] 2. Innovative equipment architecture: The equipment of the present invention adopts an external dynamic balance test bench and a layout with the upper fixture hanging on the side, which effectively improves the balance on both sides of the equipment, eliminates the need for additional counterweights, and improves the maintainability and safety of the equipment.

[0033] 3. High-integration equipment layout: The present invention adopts an innovative structure with high integration, integrating the dynamic balance test bench, lubrication station, centering station, etc. together, effectively reducing the floor area of the equipment, reducing the failure rate of multi-station linkage, reducing production costs, making the equipment operation more reliable, and facilitating the handling and transportation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a three-dimensional view of the equipment.

[0035] Figure 2 It is the front view of the equipment.

[0036] Figure 3 It is a three-dimensional view of the dynamic balance test bench.

[0037] Figure 4 It is a detailed structure diagram of the lifting part of the upper fixture.

[0038] Figure 5 It is a detailed drawing of the upper fixture.

[0039] Figure 6 It is Figure 6 the C-C sectional view of.

[0040] Figure 7 It is a detailed drawing of the upper and lower fixtures when they are closed.

[0041] Figure 8 It is a diagram of the line lifting mechanism.

[0042] Figure 9 It is a top view of the tire centering mechanism.

[0043] Figure 10 It is a diagram of the tire unloading mechanism.

[0044] Figure 11 It is one of the state diagrams of the cooperation relationship between the upper and lower fixtures of the present invention.

[0045] Figure 12 It is the second state diagram of the cooperation relationship between the upper and lower fixtures of the present invention.

[0046] Figure 13 It is Figure 12 the partial enlarged view of.

[0047] In the figure: dynamic balance test bench (1), upper rim lifting mechanism (2), equipment frame (3), line lifting mechanism (4), tire centering mechanism (5), electric control cabinet (6), tire lubrication mechanism (7), inflation system (8), tire unloading mechanism (9), conveyor line (10), test tire (11), upper fixture (12), lower fixture (13);

[0048] swing table (101), main shaft (102), vibration sensor (103);

[0049] lifting assembly (401), distance adjustment assembly (402), conveyor line mounting seat (403);

[0050] gear (501), cylinder (502), long connecting rod (503), short connecting rod (504), bearing seat (505), holding arm (506);

[0051] tire unloading pressure plate (901), tire unloading claw width adjustment assembly (902), tire unloading claw (903), lifting cylinder (904);

[0052] Upper fixture mounting plate (1201), positioning and adjusting plate (1202), collision buffer plate (1203), horizontal adjusting seat (1204), central adjusting seat (1205), collision buffer spring (1206), fixture unlocking cylinder (1207), parallel gripper (1208), upper fixture clutch ring (1209), upper fixture anti-falling ring (1210), upper fixture mandrel (1211), upper rim (1212), fixture lock (1213), unlocking punch (1214), locking button (1215), lock extension spring (1216), transmission shaft (1217);

[0053] Lower rim (1301). Detailed implementation mode

[0054] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0055] The present invention describes a tire dynamic balance tester with a new architecture, which includes an equipment frame 3, a conveyor line 10, a test station and a pre-treatment station; more specifically, as Figure 1 and Figure 2 shown, it includes a dynamic balance test bench 1, an upper rim lifting mechanism 2, an equipment frame 3, a line lifting mechanism 4, a tire centering mechanism 5, a tire lubrication mechanism 7, an inflation system 8, a tire removal mechanism 9, a conveyor line 10, an upper fixture 12 and a lower fixture 13.

[0056] As Figure 1 and Figure 2 shown, the equipment frame 3 is fixed on the ground, the line lifting mechanism 4 is installed in the middle of the equipment frame 3, and the conveyor line 10 for conveying the test tire 11 is installed on the line lifting mechanism 4, and the conveyor line 10 is installed through the line lifting mechanism 4;

[0057] As Figure 1 and Figure 2 shown, a test station is arranged on one side of the equipment frame 3 and the conveyor line 10, and a tire removal mechanism 9, an upper rim lifting mechanism 2, a dynamic balance test bench 1, an upper fixture 12 and a lower fixture 13 are arranged at the test station; a dynamic balance test bench 1 is arranged under the test station, and the dynamic balance test bench 1 is installed on one side of the equipment frame 3 and arranged upward through the conveyor line 10. A swing table 101, a main shaft 102 and a vibration sensor 103 are arranged in the dynamic balance test bench 1. A lower fixture 13 for cooperatively connecting the lower end of the test tire 11 is installed on the dynamic balance test bench 1. An upper rim lifting mechanism 2 is arranged above the test station, and the upper rim lifting mechanism 2 is side-mounted on the equipment frame 3 on the same side as the dynamic balance test bench 1, as Figure 4As shown in the figure, a tire unloading mechanism 9 for unloading the test tire 11 from the dynamic balance test bench 1 is provided at the bottom of the upper rim lifting mechanism 2. An upper clamp 12 for fitting and connecting to the upper end of the test tire 11 is installed on the bottom of the upper rim lifting mechanism 2. The upper clamp 12 and the lower clamp 13 are connected in cooperation to form a tire test fitting clamp. The tire test fitting clamp is used for floating clamping, and at the same time realizes functions of horizontal movement, centering, anti-collision, anti-falling and clutch;

[0058] On the other side bottom of the equipment frame 3 and the conveyor line 10, a pre-treatment station is arranged. A tire centering mechanism 5, a tire lubricating mechanism 7 and an inflation system 8 are provided at the pre-treatment station; the tire lubricating mechanism 7 is arranged above the conveyor line 10, and tire centering mechanisms 5 are arranged on both sides of the tire lubricating mechanism 7. The tire centering mechanism 5 and the tire lubricating mechanism 7 are also fixedly installed on the equipment frame 3. An inflation system 8 for inflating the test tire 11 is installed on the equipment frame 3 above the pre-treatment station, and the inflation system 8 is communicated with the inner cavity of the test tire 11.

[0059] The equipment frame 3 serves as the basic carrier of the equipment and is composed of a large bottom plate and a main frame. The rest of the components are all installed on the equipment frame 3. The conveyor line 10 passes through the center of the main frame. While the main frame serves as the installation basis for the components, the frame structure provides high-strength support for the movement of the side-hung moving components, enhancing the structural stability of the equipment. The layout of the large bottom plate improves the integration of the equipment, avoids the difficulties in transportation of the split architecture, and at the same time avoids the problem of accuracy decline caused by transportation or equipment handling.

[0060] At the same time, since the side-hung side of the equipment frame 3 is subject to a large overturning force, additional counterweights need to be provided on the other side to prevent the equipment frame 3 from tipping over. In the present invention, the tire centering mechanism 5, the tire lubricating mechanism 7 and the inflation system 8 of the pre-treatment station are all installed on the other side of the upper rim lifting mechanism 2 and the upper clamp 12 which are side-hung on the equipment frame 3. While installing and arranging to connect with the conveyor line 10, the problem of easy overturning force on the side-hung of the balance detector is also solved, without the need for additional configuration, reducing the cost and improving the compactness of the equipment.

[0061] The dynamic balance test bench 1 is fixed on the equipment machine base plate. As Figure 3 shown, the dynamic balance test bench 1 includes a base, a swing table 101, a main shaft 102 and a vibration sensor 103; a lower clamp 13 is coaxially and rotatably sleeved on the upper end of the main shaft 102; the lower part of the main shaft 102 is connected to the base through the swing table 101. Specifically, swing tables 101 are installed on both sides of the main shaft 102, and a vibration sensor 103 for detecting the vibration of the swing table 101 is installed beside each swing table 101; there are two vibration sensors 103, corresponding to the two swing tables 101 respectively.

[0062] The swing table 101 can be translated along the short side direction of itself and yawed along the long side. The two vibration sensors 103 corresponding to the two swing tables 101 are arranged at the same measuring point in a horizontal and vertical orthogonal manner to respectively receive the vibration signals of the translation and yaw of the two swing tables 101.

[0063] When the test tire 11 with unbalance is installed on the main shaft 102 and rotates, the swing table 101 will vibrate due to the action of the unbalance force. The vibration sensor 103 is installed on the base, connected to the swing table 101, receives the vibration and outputs an electrical signal.

[0064] Specifically, the orientations of the vibration sensors 103 of the dynamic balance test bench are horizontally and vertically perpendicular to each other, and are arranged at the same measuring point in a horizontal and vertical orthogonal manner to respectively receive the translation and swing signals of the swing table 101. Such an arrangement can greatly reduce the size of the test bench structure. At the same time, since the vibration signals of the same measuring point are received, the vibration differences caused by different contact points can be avoided, improving the accuracy and repeatability of the test.

[0065] As Figure 8 shown, the wire body lifting mechanism 4 includes a lifting component 401, a distance adjusting component 402 and a conveyor line mounting seat 403; the lifting component 401 is installed at the lower part on the equipment frame 3, the distance adjusting component 402 is installed on the upper part of the lifting component 401, the conveyor line mounting seat 403 is installed above the distance adjusting component 402, and two conveyor lines 10 are installed above the conveyor line mounting seat 403; the lifting component 401 drives the distance adjusting component 402, the conveyor line mounting seat 403 and the conveyor lines 10 to move up and down together, and the distance adjusting component 402 drives the two conveyor lines 10 on the conveyor line mounting seat 403 to move horizontally closer to or away from each other.

[0066] The wire body lifting mechanism 4 is fixed to the lower side edge of the equipment frame 3 and can be driven to move up and down by the lifting motor driving mechanism of the wire body lifting mechanism 4. Among them, the lifting component 401 is used to lift and lower the conveyor line 10, and the distance adjusting component 402 is used to adjust the distance between the conveyor lines 10 to adapt to different tire specifications of different sizes. This structure can avoid problems such as bell mouths and side deviations caused by asynchronous adjustment during the width adjustment of the long wire body, avoid problems such as the tire not being transported in place due to the adjustment of the wire body width, and further avoid the problem of mold closing collision caused by the tire not being transported in place. Of course, the distance adjusting component can be manually adjusted by a handwheel or automatically adjusted by a program control using a motor or the like.

[0067] There are two conveyor lines 10 installed on the screw rod and slide rail assembly. The conveyor lines 10 are driven by the line body drive motors installed thereon to rotate the conveyor belts. The handling direction of the conveyor lines can be switched by respectively controlling the rotation directions of the motors, or the tires on the conveyor lines can be driven to rotate in place by changing the rotation direction of one of the motors. Compared with the conveyor lines driven by a single motor, this implementation method provides a very large degree of freedom for the realization of the equipment functions.

[0068] As Figure 9 shown, the tire centering mechanism 5 is installed on the inner cross beam of the main frame. The tire centering mechanism 5 is driven by a cylinder 502 and a connecting rod.

[0069] A camera is installed on the equipment frame 3 directly above the tire lubrication mechanism 7, and the tire centering mechanism 5 is installed on the equipment frame 3 on both sides above the tire lubrication mechanism 7.

[0070] More specifically, the tire centering mechanism 5 includes a cylinder 502, a long connecting rod 503, a short connecting rod 504, a bearing seat 505 and two centering modules; the two centering modules are respectively installed on the equipment frame 3 on both sides above the tire lubrication mechanism 7. Each centering module includes two gear arm components. Each gear arm component is mainly composed of an arm 506 and a gear 501 fixedly connected to one end of the arm 506. The arm 506 and the gear 501 at one end of the arm 506 can be hingedly installed on the equipment frame 3. The gears 501 of the two gear arm components in the same centering module are meshed.

[0071] The cylinder 502 is installed on one side of the equipment frame 3. The piston rod of the cylinder 502 is connected to the gear 501 of one of the gear arm components in one side centering module. Specifically, the piston rod of the cylinder 502 is hinged to one end of a connecting rod, and the other end of the connecting rod is fixedly connected to the gear 501.

[0072] An L-shaped bearing seat 505 is hingedly installed on the gear 501 of one of the gear arm components in the other side centering module. The gear 501 of the other gear arm component in one side centering module is synchronously rotationally connected to the bearing seat 505 through a long connecting rod 503. Specifically, the gear 501 is fixedly connected to one end of a connecting rod, the other end of the connecting rod is hinged to one end of the long connecting rod 503, the other end of the long connecting rod 503 is hinged to one end of the L-shaped bearing seat 505, and the middle of the L-shaped bearing seat 505 itself is hinged to the gear 501.

[0073] The bearing seat 505 is synchronously rotationally connected to the gear 501 of the other gear arm component in the other side centering module through a short connecting rod 504. Specifically, the other end of the L-shaped bearing seat 505 is hinged to one end of the short connecting rod 504, the other end of the short connecting rod 504 is hinged to one end of a connecting rod, and the other end of the connecting rod is fixedly connected to the gear 501.

[0074] The center of the bearing block 505 is hinged and installed on the lower gear 501. This node can transfer the torque of the long connecting rod 503 to the short connecting rod 504, while preventing the torque of the long connecting rod 503 from being transferred to the gear below the bearing block 505. The action of the centering mechanism is driven by the telescopic movement of the piston rod of the cylinder 502. Two sets of such structures are arranged on both sides respectively, and the combination of two-stage connecting rods avoids the problem that the connecting rod directly passes through the center of the equipment and interferes with the camera installed at the center of the equipment. The driving mechanism drives the four clamping arms to perform opening and closing movements to complete the centering function of the tire.

[0075] Specifically, when the cylinder 502 retracts, it drives the gear 501 and the clamping arm 506 of a gear clamping arm assembly in one side centering module to rotate and move closer to the center. Due to the meshing relationship between the two gear clamping arm assemblies in this side centering module, it further drives the other gear clamping arm assembly to rotate and move closer to the center. Due to the action of the long connecting rod 503, it drives the bearing block 505 in the other side centering module to rotate synchronously. The bearing block 505 is hinged to the gear 501 for installation. Therefore, the gear 501 of a gear clamping arm assembly in the other side centering module where the bearing block 505 is hinged does not rotate, but drives the gear 501 of the other gear clamping arm assembly in the other side centering module connected to the other end of the bearing block 505 to rotate and move closer to the center. Due to the meshing relationship between the two gear clamping arm assemblies in the other side centering module, it further drives the other gear clamping arm assembly to rotate and move closer to the center. Thus, the four gear clamping arm assemblies all rotate and move closer to the center, and then clamp the test tire 11 to achieve positioning and centering.

[0076] On the contrary, when the cylinder 502 extends, it drives the four gear clamping arm assemblies to rotate away from the center, and then loosens the clamping of the test tire 11.

[0077] As Figure 1 shown, the tire unloading mechanism 9 is installed on the upper rim lifting mechanism 2. The tire unloading mechanism 9 is used to remove the test tire 11 from the upper and lower clamps after the test of the test tire 11.

[0078] As Figure 10As shown, the tire unloading mechanism 9 includes a tire unloading pressure plate 901, a tire unloading claw width adjustment component 902, a tire unloading claw 903 and a lifting cylinder 904. The lifting cylinder 904 is fixed on the upper rim lifting mechanism 2. The piston rod of the lifting cylinder 904 is fixedly connected to the tire unloading pressure plate 901, and the tire unloading pressure plate 901 is lifted and lowered along with the piston rod of the lifting cylinder 904. The tire unloading claw width adjustment component 902 and the two tire unloading claws 903 are both installed on the tire unloading pressure plate 901. The tire unloading claw width adjustment component 902 is respectively connected to the two tire unloading claws 903. The tire unloading claw width adjustment component 902 is used to adjust the rotation opening and closing angles of the two tire unloading claws 903. The lifting cylinder 904 drives the tire unloading claw 903 and the tire unloading claw width adjustment component 902 to lift and lower as a whole. The tire unloading claw width adjustment component 902 drives the two tire unloading claws 903 to separate and move, thereby adapting to tire rims of different sizes.

[0079] When the lifting cylinder 904 retracts, the tire unloading claws 903 are separated from the tire, and when the lifting cylinder 904 extends, the tire unloading claws 903 press down the tire and make the tire separate from the upper clamp.

[0080] The two tire removal claws 903 are used to move the inner edge of the sub-mouth of the test tire 11 to remove the test tire 11 clamped between the upper clamp 12 and the lower clamp 13. The tire removal claw width adjustment assembly 902 can use a screw nut sliding pair to drive the two tire removal claws 903 to move.

[0081] The tire lubrication mechanism 7 is installed on the middle crossbeam of the main frame of the equipment frame 3, and the mechanism can drive the brush to move forward and backward and up and down to lubricate the inner edge of the test tire 11. The tire lubrication mechanism 7 is specifically implemented with a ball table, and a brush for scraping is arranged around the upper side of the ball table.

[0082] The inflation system 8 is installed on the top small beam of the main frame of the equipment rack 3, and is composed of an air storage tank and an air control circuit. It can control the output air pressure and flow rate and is used to test the inflation effect of the tire 11 during the test process.

[0083] like Figure 1 As shown, the specific implementation also includes an electric control cabinet 6, which is installed on the side of the equipment frame 3 to provide power and control for the equipment. The electric control cabinet 6 is respectively connected to the electrical components in the dynamic balancing test bench 1, the upper rim lifting mechanism 2, the line body lifting mechanism 4, the tire centering mechanism 5, the inflation system 8, the tire unloading mechanism 9, and the conveying line 10.

[0084] The upper rim lifting mechanism 2 is a device mechanism equipped with a motor, and driven by the motor to move up and down along the gravity direction; in the specific implementation, a gear rack transmission pair or the like can be adopted.

[0085] The upper wheel rim lifting mechanism 2 is installed on the upper side of the equipment frame 3 through a guide rail, and can be driven by the motor of the upper wheel rim lifting mechanism 2 to move up and down, driving the upper clamp 12 to the specified coordinate.

[0086] The lower fixture 13 includes a lower rim 1301 coaxially and fixedly sleeved outside the main shaft 102 and a lock ring mechanism for locking the upper fixture. During the dynamic balance test, the test tire 11 is clamped between the upper rim 1212 of the upper fixture 12 and the lower rim 1301.

[0087] As Figure 5 and Figure 7 shown, the upper fixture 12 is installed on the upper rim lifting mechanism 2 and moves up and down driven by the upper rim lifting mechanism 2. The upper fixture mounting plate 1201 serves as the basis of the upper fixture assembly and is fixed to the upper rim lifting mechanism 2 to complete the installation of the upper fixture assembly.

[0088] More specifically, the upper fixture 12 includes an upper fixture mounting plate 1201, a positioning and adjusting plate 1202, a collision buffer plate 1203, a horizontal adjusting seat 1204, a center adjusting seat 1205, a collision buffer spring 1206, a fixture unlocking cylinder 1207, a parallel gripper 1208, an upper fixture clutch ring 1209, an upper fixture anti-falling ring 1210, an upper fixture mandrel 1211, an upper rim 1212, a fixture lock 1213, an unlocking press head 1214, a locking button 1215, and a transmission shaft 1217.

[0089] The upper fixture mounting plate 1201 is fixedly installed on the upper rim lifting mechanism 2. The upper fixture mounting plate 1201, the positioning and adjusting plate 1202, and the collision buffer plate 1203 are arranged at intervals from bottom to top, and horizontal adjusting seats 1204, center adjusting seats 1205, and collision buffer springs 1206 for horizontal adjustment, centering, and anti-falling are provided between them:

[0090] The bottom surface of the positioning and adjusting plate 1202 is installed on the upper fixture mounting plate 1201 through the horizontal adjusting seats 1204 at each corner and can be horizontally moved relative to it. The horizontal attitude of the positioning and adjusting plate 1202 relative to the upper fixture mounting plate 1201 is adjusted through the horizontal adjusting seats 1204, so that the positioning and adjusting plate 1202 is horizontally parallel to the lower fixture 13 and the test tire 11.

[0091] Center adjusting seats 1205 and bolts are installed at each corner of the top surface of the positioning and adjusting plate 1202. The horizontal movement of the positioning and adjusting plate 1202 relative to the upper fixture mounting plate 1201 is adjusted through the center adjusting seats 1205, so that the cylinders, fixture unlocking cylinders 1207, upper fixture mandrels 1211, etc. at the center of the positioning and adjusting plate 1202 are aligned with the lower fixture 13 and the test tire 11 below.

[0092] The collision buffer plate 1203 is reversely and elastically mounted on the positioning and adjusting plate 1202 through the collision buffer springs 1206 at each corner, and the floating interval distance of the collision buffer plate 1203 relative to the upper fixture mounting plate 1201 is adjusted through the collision buffer springs 1206 when the upper rim lifting mechanism 2 works.

[0093] The positioning and adjusting plate 1202 is mounted on the upper fixture mounting plate 1201, and three triangular horizontal adjusting seats 1204 are mounted between the two. The height of the horizontal adjusting seat 1204 is changed through the thread, so as to adjust the levelness of the positioning and adjusting plate 1202.

[0094] More specifically, an unpenetrated groove is formed on the top surface of the corner of the upper fixture mounting plate 1201, and the block-shaped horizontal adjusting seat 1204 is embedded in the groove. The horizontal adjusting seat 1204 is mainly composed of two upper and lower ring blocks rotatably connected through the thread. The upper and lower ring blocks are connected through the thread, so that the upper and lower ring blocks rotate to drive the adjustment of the up-and-down axial distance between the upper and lower ring blocks; the lower ring block is embedded in the groove, and the top surface of the upper ring block is connected to the bottom surface of the corner of the positioning and adjusting plate 1202.

[0095] Both the upper and lower ring blocks are provided with clamping grooves. The clamping groove of the lower ring block is used to cooperate with the convex block in the groove for connection to form a non-rotatable embedding, and the clamping groove of the upper ring block is used to be driven to rotate by an external crescent wrench. By driving the upper ring block to rotate, the up-and-down axial distance between the upper and lower ring blocks is adjusted, and then the distance between the top surface of the upper fixture mounting plate 1201 and the bottom surface of the positioning and adjusting plate 1202 is adjusted. The horizontal adjusting seats 1204 between the upper fixture mounting plate 1201 and the three corners of the positioning and adjusting plate 1202 are all adjusted to adjust the horizontal attitude of the positioning and adjusting plate 1202 relative to the upper fixture mounting plate 1201.

[0096] Since the upper fixture mounting plate 1201 is fixed on the upper rim lifting mechanism 2, the upper rim lifting mechanism 2 may not be horizontal but inclined. In this way, the horizontal adjusting seat 1204 structure can adjust the positioning and adjusting plate 1202 to maintain a horizontal attitude when the upper fixture mounting plate 1201 is inclined.

[0097] At the position corresponding to the horizontal adjustment seat 1204 above the positioning adjustment plate 1202, a center adjustment seat 1205 is installed. More specifically, a non-through circular blind hole is formed on the top surface of the corner of the positioning adjustment plate 1202, and the center adjustment seat 1205 of the block body is embedded in the blind hole. A circular boss is provided at the lower end of the center adjustment seat 1205, and the boss is only rotatably embedded in the circular blind hole, so that the center adjustment seat 1205 can rotate around its own central axis in the blind hole. A waist-shaped groove that penetrates up and down is formed in the middle of the center adjustment seat 1205. After the bolt passes downward through the waist-shaped groove, it then passes through the positioning adjustment plate 1202, the horizontal adjustment seat 1204, and the upper fixture mounting plate 1201 in sequence and is threadedly fixed to the upper rim lifting mechanism 2 above.

[0098] When the bolt is loosened, rotate the center adjustment seat 1205 so that the length direction of the waist-shaped groove is along the required horizontal movement direction of the positioning adjustment plate 1202, drive the positioning adjustment plate 1202 to move horizontally along the length direction of the waist-shaped groove together with the center adjustment seat 1205, and the bolt moves in the waist-shaped groove, thereby driving the horizontal movement of the positioning adjustment plate 1202 relative to the upper fixture mounting plate 1201.

[0099] Through the cooperation of the center adjustment seats 1205 at the three corners of the positioning adjustment plate 1202, drive the horizontal movement direction and distance of the whole center adjustment seat 1205 relative to the upper fixture mounting plate 1201.

[0100] When the locking screw of the center adjustment seat 1205 is loosened, the positioning adjustment plate 1202 can move freely on the plane composed of the three horizontal adjustment seats 1204 at the three corners. When the locking screw of the center adjustment seat 1205 is tightened, the position of the positioning adjustment plate 1202 is locked and cannot move. Through the above mechanism, the upper fixture has the functions of horizontal adjustment and center adjustment. Ensure that the upper and lower fixtures are concentric and coaxial, and avoid failures caused by the offset of the upper and lower fixtures.

[0101] The three center adjustment seats 1205 can determine a unique adjustment direction. This structure not only avoids the random offset problem caused by adjusting the center by opening a large hole, but also has the function of adjusting the center in any direction.

[0102] The collision buffer spring 1206 is sleeved outside the spring bolt and is located above the collision buffer plate 1203. The spring bolt passes downward through the collision buffer spring 1206 and then movably passes through the collision buffer plate 1203 and is threadedly connected to the threaded hole at the corner of the positioning adjustment plate 1202.

[0103] A collision detection sensor is arranged between the collision buffer plate 1203 and the positioning adjustment plate 1202 to detect whether the upper and lower clamps collide during the mold closing process. The collision detection sensor detects the distance between the collision buffer plate 1203 and the positioning adjustment plate 1202 in real time. When the distance detected by the collision detection sensor in real time is greater than the preset distance threshold, the collision detection sensor generates a signal, and the controller in the electric control cabinet 6 controls the motor in the upper rim lifting mechanism 2 to stop working, that is, to drive the upper rim lifting mechanism 2 to stop descending and move, thereby playing an anti-collision function.

[0104] The collision buffer plate 1203 is installed on the positioning adjustment plate 1202, and the two are connected by a guide column of a spring bolt. The horizontal position is relatively fixed, and the vertical direction can be freely moved. The collision buffer spring 1206 is installed on the guide column to limit the vertical movement of the collision buffer plate 1203. However, when the upper clamp 12 collides with the lower clamp 12, at the initial stage of the collision, the collision buffer plate 1203 is moved upward by the collision force to overcome the collision buffer spring 1206. When the collision buffer plate 1203 is separated from the positioning adjustment plate 1202, the collision detection sensor is triggered, and an alarm and a collision post-processing procedure are issued, so that the equipment is released from the collision state and the equipment is prevented from being damaged.

[0105] A parallel air gripper 1208 is fixedly installed at the lower end of the collision buffer plate 1203. The lower end of the parallel air gripper 1208 passes downward through the upper fixture mounting plate 1201 and is then installed with an upper fixture clutch ring 1209. The upper fixture clutch ring 1209 is used to clamp the upper fixture mandrel 1211. At the same time, an upper fixture anti-fall ring 1210 is fixedly installed at the lower end of the parallel air gripper 1208. The top end of the upper fixture mandrel 1211 is arranged on the step formed by the anti-fall ring 1210 and is restricted from moving downward.

[0106] A parallel air gripper 1208 is fixedly installed at the lower end of the collision buffer plate 1203. The parallel air gripper 1208 is arranged downward through the upper fixture mounting plate 1201. The edge of the lower end of the parallel air gripper 1208 is connected and installed with an upper fixture clutch ring 1209 composed of multiple clutch blocks. The parallel air gripper 1208 may be equipped with a built-in motor to drive the multiple clutch blocks to move toward or away from the center; the upper end of the upper fixture clutch ring 1209 is fixedly connected to the lower end of the parallel air gripper 1208, and the upper fixture clutch ring 1209 is used to clamp the upper end of the upper fixture core shaft 1211; the multiple clutch blocks of the upper fixture clutch ring 1209 move together to clamp the upper end of the upper fixture core shaft 1211, so that the upper fixture core shaft 1211, the parallel air gripper 1208 and the collision buffer plate 1203 rotate synchronously.

[0107] At the same time, in the middle of the lower end of the parallel gripper 1208, there is an upper fixture anti-fall ring 1210 composed of multiple anti-fall blocks, and the relative positions of the multiple anti-fall blocks are always fixed. The top surface of the upper fixture anti-fall ring 1210 is fixed to the bottom surface of the parallel gripper 1208. The upper end of the upper fixture mandrel 1211 is provided with an outward flange with a larger diameter. Each anti-fall block is provided with a horizontal flange at the lower end, and the horizontal flange extends towards the center and supports the lower step surface of the outward flange connecting the top end of the upper fixture mandrel 1211, so that the downward movement of the upper fixture mandrel 1211 is limited, playing the function of preventing falling. That is, the inner diameter of the bottom ends of the multiple anti-fall blocks is smaller than the outer diameter of the outward flange at the top end of the upper fixture mandrel 1211.

[0108] In specific implementation, as Figure 6 shown, the multiple clutch blocks of the upper fixture clutch ring 1209 and the multiple anti-fall blocks of the upper fixture anti-fall ring 1210 are arranged alternately at circumferential intervals. Usually, three of each are set, and the three clutch blocks and the three anti-fall blocks are arranged alternately at circumferential intervals, staggered, with non-interfering positions, but at the same time, the upper fixture mandrel 1211 can be clamped and supported to prevent falling.

[0109] When the upper fixture clutch ring 1209 is close to and closed to each other, it firmly holds the upper fixture mandrel 1211, making the mandrel immovable. When the upper fixture clutch ring 1209 is far from and open to each other, the upper fixture mandrel 1211 can move freely. The upper fixture anti-fall ring 1210 is installed below the parallel gripper 1208, installed out of position with the upper fixture clutch ring 1209, surrounding the upper fixture mandrel 1211, and having a certain gap in the circumferential direction with the mandrel. The mandrel can rotate or move upward, but cannot fall.

[0110] The fixture unlocking cylinder 1207 is installed on the collision buffer plate 1203 and can drive the unlocking press head 1214 to move up and down. The parallel gripper 1208 is installed below the collision buffer plate 1203 and drives the upper fixture clutch ring 1209 to open and close.

[0111] The jig unlocking cylinder 1207 is fixedly installed on the collision buffer plate 1203. The lower end of the piston rod of the jig unlocking cylinder 1207 passes downward through the collision buffer plate 1203 and is then fixedly connected to the upper end of the unlocking press head 1214 in the central through hole inside the parallel jaw 1208. The unlocking press head 1214 is actually a vertical shaft, and the unlocking press head 1214 is driven by the jig unlocking cylinder 1207 to move up and down in the central through hole inside the parallel jaw 1208. A central through hole is provided in the upper fixture mandrel 1211, and a transmission shaft 1217 is installed in the central through hole. The upper rim 1212 is coaxially and fixedly sleeved outside the upper fixture mandrel 1211. The upper end of the transmission shaft 1217 extends out of the central through hole of the upper fixture mandrel 1211 and is fixedly installed with a locking button 1215. The locking button 1215 is used for pressure contact with the bottom surface of the unlocking press head 1214. The middle part of the transmission shaft 1217 is connected to the central through hole of the upper fixture mandrel 1211 through a latch spring 1216. The lower end of the transmission shaft 1217 passes through the central through hole of the upper fixture mandrel 1211 and is installed with a jig latch 1213.

[0112] The lower ends of the upper fixture mandrel 1211 and the transmission shaft 1217 pass through the lower rim 1301 of the lower fixture 13 and extend into the central through hole of the main shaft 102, and are fixedly connected by clamping through the cooperation of the latch spring 1216 and the jig latch 1213, so as to realize the coaxial fixation of the upper fixture mandrel 1211 with the main shaft 102 and the lower fixture 13, and further realize the coaxial fixed rotation between the upper fixture 12, the lower fixture 13 and the main shaft 102.

[0113] In the specific implementation, a latch spring 1216 is sleeved outside the top end of the transmission shaft 1217 connected to the bottom end of the locking button 1215. The middle part of the central through hole of the upper fixture mandrel 1211 is set as a stepped hole with a larger upper part and a smaller lower part. The diameter of the locking button 1215 is larger than the diameter of the transmission shaft 1217. The upper and lower ends of the latch spring 1216 are elastically connected to the stepped surfaces between the locking button 1215 and the transmission shaft 1217 and the stepped surface of the stepped hole of the upper fixture mandrel 1211 respectively.

[0114] At the same time, the upper fixture mandrel 1211 and the lower end of the transmission shaft 1217 are used together to pass through the lower rim 1301 of the lower fixture 13 and extend into the central through-hole of the main shaft 102. The inner wall of the central through-hole of the main shaft 102 is provided with a tooth groove structure. The lower end of the transmission shaft 1217 is set as a conical pituitary with a smaller upper part and a larger lower part. The bottom of the central through-hole of the upper fixture mandrel 1211 is opened as a conical cavity that fits the shape of the pituitary. The conical pituitary is embedded in the conical cavity. A horizontally penetrating radial channel is opened on the inner wall of the central through-hole of the upper fixture mandrel 1211 at the conical cavity. A fixture lock 1213 is installed in the radial channel. The fixture lock 1213 can move horizontally in the radial channel. The lock and the transmission shaft are in a T-shaped groove fit, and can perform extension and retraction actions, so that the fixture lock 1213 can be horizontally reset in the radial channel. The inner end of the fixture lock 1213 is set as a local conical surface for mating contact with the conical surface of the conical pituitary. The outer end of the fixture lock 1213 is provided with a tooth groove structure for mating with the sawtooth structure on the inner wall of the central through-hole of the main shaft 102. The top surface of the conical pituitary and the top surface of the conical inner cavity are connected by conical surface contact.

[0115] As Figure 11 shown, when the upper fixture mandrel 1211 is clamped and restricted by the upper fixture clutch ring 1209 and cannot rotate and move axially up and down, the piston rod of the fixture unlocking cylinder 1207 moves downward, driving the unlocking press head 1214 to also move downward, pushing the locking button 1215 and the transmission shaft 1217 to move downward relative to the upper fixture mandrel 1211 against the acting force of the lock-out spring 1216, so that the top surface of the conical pituitary of the transmission shaft 1217 is separated from the top surface of the conical inner cavity of the bottom surface of the upper fixture mandrel 1211 to generate a gap. The fixture lock 1213 moves radially inward in the radial channel and abuts against the surface of the conical pituitary of the transmission shaft 1217 for contact connection. Furthermore, the outer end of the fixture lock 1213 is separated from the sawtooth structure of the central through-hole of the main shaft 102. As Figure 13 shown, further, the up-and-down axial free movement of the upper fixture mandrel 1211 relative to the main shaft 102 can be controlled, realizing the coaxial disengagement of the upper fixture mandrel 1211 from the main shaft 102 and the lower fixture 13, and further realizing the non-connection of the coaxiality between the upper fixture 12 and the lower fixture 13 and the main shaft 102, so that the upper fixture 12 can move up and down freely.

[0116] As Figure 12As shown in the figure, the piston rod of the fixture unlocking cylinder 1207 moves upward, driving the unlocking press head 1214 to move upward as well. The locking button 1215 and the transmission shaft 1217 move upward relative to the upper fixture mandrel 1211 under the action of the locking spring 1216, so that the top surface of the conical pituitary of the transmission shaft 1217 is in close contact with the top surface of the conical inner cavity at the bottom of the upper fixture mandrel 1211, pushing the fixture locking buckle 1213 to move radially outward in the radial channel. Furthermore, the outer end of the fixture locking buckle 1213 meshes with the sharp-angle serrated structure of the central through-hole of the main shaft 102, realizing the coaxial fixed connection between the upper fixture 12 and its upper fixture mandrel 1211 and the main shaft 102 and the lower fixture 13. When the main shaft 102 and the lower fixture 13 rotate, they drive the upper fixture 12 and its upper fixture mandrel 1211 and the transmission shaft 1217 to rotate synchronously.

[0117] Moreover, the tooth groove structure on the inner wall of the central through-hole of the main shaft 102 is set as a multi-stage tooth groove structure with different heights along the up-and-down axial direction. By adjusting the different axial positions of the locking button 1215 and the transmission shaft 1217 extending into the central through-hole of the main shaft 102, the fixture locking buckle 1213 meshes in the tooth groove structures with different heights, and further adjusts the distance between the upper rim 1212 of the upper fixture 12 and the lower rim 1301 of the lower fixture 13, so as to realize different clamping forces and clamp test tires 11 with different sizes.

[0118] In this way, the matching structure between the upper fixture 12 and the lower fixture 13 of the present invention not only has an adjustable coaxial fixed connection, but also ingeniously forms an adjustable axial height at the same time, realizing the clamping of the test tire 11 and the adjustable clamping force at the same time.

[0119] The fixture locking buckle 1213 is installed on the mandrel, and a locking button 1215 is designed at the top of the mandrel: when the locking button 1215 is pushed and pressed by the unlocking press head 1214, the fixture locking buckle 1213 retracts into the mandrel; when the locking button 1215 is not pushed by the unlocking press head 1214 and pops up upward, the fixture locking buckle 1213 extends out of the mandrel and cooperates with the lower fixture 13 to form a mold closing state.

[0120] The upper rim 1212 is installed on the mandrel 1211. The installation interface of the upper rim 1212 adopts a special taper fit, which can conveniently replace the rim according to production needs and ensure that the fixture accuracy meets the production requirements. Whether the rim and the tire are precisely matched during the test is a key factor for the accuracy of the test results.

[0121] The lower fixture 13 is installed at the center of the dynamic balance test bench 1 and is driven to rotate by the main shaft 102 inside the dynamic balance test bench 1. The lower fixture 13 is installed with a lower rim 1301.

[0122] During the mold closing process of the equipment, the upper rim lifting mechanism 2 drives the upper fixture 12 to move downward, and the upper fixture mandrel 1211 and the transmission shaft 1217 are inserted into the center through hole of the lower fixture 12 and the main shaft 102:

[0123] If the upper and lower clamps are misaligned or blocked by obstacles during the descent process, a collision alarm will be triggered, and timely risk avoidance measures such as stopping the machine, terminating the mold, and withdrawing the machine will be taken to avoid major accidents such as equipment damage and casualties.

[0124] If the state is normal, it moves to the specified coordinates, the clamp unlocking cylinder 1207 retracts, driving the unlocking pressure head 1214 to retract, and the locking button 1215 pops out under the action of the spring, driving the clamp lock buckle 1213 to extend and hook the inner groove of the lower clamp;

[0125] The lower fixture centering mechanism holds the upper fixture mandrel 1211 tightly, and the upper fixture clutch ring 1209 is released, completing the mold closing action. At this time, the upper and lower fixtures can rotate synchronously to perform testing work; the mold opening is the reverse step. The clutch ring is used as the limit for rotation. The part below the clutch ring rotates with the lower fixture after the mold is closed, and the part above the clutch ring remains fixed.

[0126] The upper clamp has higher safety and stability.

[0127] The operation process of the present invention is as follows:

[0128] 1. The test tire 11 to be tested is transported from the production line to the front end of the equipment, and is moved by the conveyor line 10 to the platform above the tire lubrication mechanism 7. Then, the conveyor line 10 is driven down by the line lifting mechanism 4 to drop the test tire 11 onto the tire lubrication mechanism 7;

[0129] 2. The tire centering mechanism 5 performs the centering action to position the test tire 11 at the center of the tire lubrication mechanism 7, and the line between the center of the tire lubrication mechanism 7 and the center of the inspection station is parallel to the conveying direction of the conveyor line 10;

[0130] 3. The brush at the tire lubrication station in the tire lubrication mechanism 7 is driven by the cylinder to come close to the inner edge of the sub-mouth of the test tire 11, and then the test tire 11 is clamped by the tire centering mechanism 5, and then the test tire 11 is driven to rotate on the lubrication platform, and the lubricating liquid on the brush is evenly applied to the inner edge of the sub-mouth of the test tire 11 for lubrication;

[0131] 5. After lubrication is completed, the line lifting mechanism 4 drives the conveyor line 10 to lift the test tire 11 from the tire lubrication mechanism 7, and then the conveyor line 10 moves the test tire 11 along the conveying direction to the test station on the dynamic balancing test bench 1 at the rear end;

[0132] 6. Then, the linear lifting mechanism 4 descends to place the test tire 11 on the lower rim 1301 and separates the conveyor line 10 from the test tire 11.

[0133] 7. Then, the upper rim lifting mechanism 2 drives the upper fixture 12 to descend to a specified position, bringing the upper rim 1212 close to the test tire 11.

[0134] 8. The upper rim lifting mechanism 2 drives the upper fixture 12 to continue descending until the upper rim 1212 contacts and presses down on the test tire 11, causing the upper fixture 12 and the lower fixture 13 to perform a mold closing and locking action, clamping the test tire 11 between the upper and lower rims 1212 and 1301.

[0135] 9. The inflation system 8 inflates the test tire 11 according to the programmed air pressure, causing the inner bead edge of the test tire 11 to closely adhere to the upper and lower rims 1212 and 1301, achieving an internal seal test state.

[0136] 10. The main shaft 102 of the dynamic balance test bench 1 rotates, thereby driving the test tire 11 to rotate for dynamic balance testing. The unbalance amount under dynamic balance is obtained by testing the vibration through the vibration sensor 103 beside the swing table 101.

[0137] 11. After completing the dynamic balance test, the test system rotates the test tire 11 to a specified angle to prepare for the next work station. The inflation system 8 evacuates the air to release the internal air pressure of the test tire 11.

[0138] 12. The upper rim lifting mechanism 2 drives the upper fixture 12 to rise, unlocking between the upper fixture 12 and the lower fixture 13, i.e., unlocking the upper and lower fixtures. The upper rim lifting mechanism 2 drives the upper fixture 12 to move up to a specified position. At the same time, the tire unloading mechanism 9 operates to separate the test tire 11 from the upper rim 1212 of the upper fixture 12.

[0139] 13. The linear lifting mechanism 4 drives the conveyor line 10 to rise to lift the test tire 11 off the fixture 13, sending the test tire 11 out of the equipment. At the same time, it transports another test tire 11 that has completed the lubrication process to the dynamic balance test bench 1 for testing.

[0140] The above specific implementation manners are used to explain and illustrate the present invention, rather than limiting the present invention. Any modifications and changes made to the present invention within the spirit and scope of the claims of the present invention fall within the protection scope of the present invention.

[0141] The above is only a preferred implementation manner of the present invention. Therefore, any equivalent changes or modifications made according to the structure, features, and principles described in the scope of the present invention patent application are included in the scope of the present invention patent application.

Claims

1. A tire dynamic balance detector, characterized in that: It includes an equipment frame (3), a conveyor line (10), a test station and a pre-treatment station; a line lifting mechanism (4) is installed in the middle of the equipment frame (3), and a conveyor line (10) for conveying test tires (11) is installed on the line lifting mechanism (4); a test station is arranged on one side of the equipment frame (3), and a tire unloading mechanism (9), an upper rim lifting mechanism (2), a dynamic balance test bench (1), an upper fixture (12) and a lower fixture (13) are arranged at the test station; a dynamic balance test bench (1) is arranged below the test station, the dynamic balance test bench (1) is installed on one side of the equipment frame (3), and a swing table (101), a main shaft (102) and a vibration sensor (103) are arranged in the dynamic balance test bench (1). A lower fixture (13) for fitting and connecting the lower end of the test tire (11) is installed on the dynamic balance test bench (1). An upper rim lifting mechanism (2) is arranged above the test station. The upper rim lifting mechanism (2) is installed on the equipment frame (3) on the same side as the dynamic balance test bench (1) in a side-hanging manner. A tire unloading mechanism (9) is arranged at the bottom of the upper rim lifting mechanism (2), and an upper fixture (12) for fitting and connecting the upper end of the test tire (11) is installed on the upper rim lifting mechanism (2). The upper fixture (12) and the lower fixture (13) are cooperatively connected to form a tire test cooperative fixture, and the tire test cooperative fixture is used for floating clamping, and at the same time realizes functions of horizontal movement, centering, anti-collision, anti-falling and clutch. A pre-treatment station is arranged at the bottom of the other side of the equipment frame (3), and a tire centering mechanism (5), a tire lubricating mechanism (7) and an inflation system (8) are arranged at the pre-treatment station; the tire lubricating mechanism (7) is arranged above the conveyor line (10), a tire centering mechanism (5) is arranged on the side of the tire lubricating mechanism (7), and an inflation system (8) for inflating the test tire (11) is installed on the equipment frame (3) above the pre-treatment station.

2. The tire dynamic balance detector according to claim 1, characterized in that: The dynamic balance test bench (1) includes a base, a swing table (101), a main shaft (102) and a vibration sensor (103); a lower fixture (13) is coaxially sleeved on the upper end of the main shaft (102); the lower part of the main shaft (102) is connected to the base through the swing table (101). Specifically, swing tables (101) are installed on both sides of the main shaft (102), and a vibration sensor (103) for detecting the vibration of the swing table (101) is installed beside each swing table (101); the swing table (101) can translate along the short side direction of itself and yaw along the long side. The two vibration sensors (103) corresponding to the two swing tables (101) are arranged at the same measuring point in a horizontally perpendicular and orthogonal manner to respectively receive the vibration signals of the translation and yaw of the two swing tables (101).

3. The tire dynamic balance detector according to claim 1, characterized in that: The wire body lifting mechanism (4) includes a lifting component (401), a distance adjustment component (402), and a conveyor line mounting base (403); the lifting component (401) is installed on the equipment frame (3), the distance adjustment component (402) is installed on the upper part of the lifting component (401), the conveyor line mounting base (403) is installed above the distance adjustment component (402), and two conveyor lines (10) are installed above the conveyor line mounting base (403); the lifting component (401) drives the distance adjustment component (402), the conveyor line mounting base (403), and the conveyor line (10) to move up and down together, and the distance adjustment component (402) drives the two conveyor lines (10) on the conveyor line mounting base (403) to move horizontally closer to or away from each other.

4. The tire dynamic balance detector according to claim 1, wherein: A camera is installed on the equipment frame (3) directly above the tire lubrication mechanism (7), and tire centering mechanisms (5) are installed on the equipment frame (3) on both sides above the tire lubrication mechanism (7); the tire centering mechanism (5) includes a cylinder (502), a long connecting rod (503), a short connecting rod (504), a bearing seat (505), and two centering modules; the two centering modules are respectively installed on the equipment frame (3) on both sides above the tire lubrication mechanism (7), and each centering module includes two gear arm components. Each gear arm component is mainly composed of a connecting arm (506) and a gear (501) fixedly connected to one end of the connecting arm (506). The gears (501) of the two gear arm components in the same centering module are meshed; The cylinder (502) is installed on the equipment frame (3). The piston rod of the cylinder (502) is connected to the gear (501) of a gear arm component in one of the centering modules on one side. An L-shaped bearing seat (505) is hingedly installed on the gear (501) of a gear arm component in the other centering module on the other side. The gear (501) of the other gear arm component in one of the centering modules on one side is synchronously rotatably connected to the bearing seat (505) through the long connecting rod (503), and the bearing seat (505) is synchronously rotatably connected to the gear (501) of the other gear arm component in the other centering module on the other side through the short connecting rod (504).

5. The tire dynamic balance detector according to claim 1, wherein: The tire unloading mechanism (9) includes a tire unloading pressing plate (901), a tire unloading claw width adjustment component (902), tire unloading claws (903), and a lifting cylinder (904). The lifting cylinder (904) is fixed on the upper rim lifting mechanism (2). The piston rod of the lifting cylinder (904) is fixedly connected to the tire unloading pressing plate (901). The tire unloading claw width adjustment component (902) and the two tire unloading claws (903) are both installed on the tire unloading pressing plate (901), and the tire unloading claw width adjustment component (902) is respectively connected to the two tire unloading claws (903).

6. The tire dynamic balance detector according to claim 1, wherein: The upper rim lifting mechanism (2) is an equipment mechanism with a motor and is driven by the motor to move up and down along the direction of gravity. The lower fixture (13) includes a lower rim (1301) coaxially and fixedly sleeved outside the main shaft (102). During dynamic balance testing, the test tire (11) is clamped between the upper rim (1212) of the upper fixture (12) and the lower rim (1301).

7. A tire dynamic balance detector according to claim 1 or 6, characterized in that: The upper fixture (12) includes an upper fixture mounting plate (1201), a positioning and adjusting plate (1202), a collision buffer plate (1203), a horizontal adjusting seat (1204), a center adjusting seat (1205), a collision buffer spring (1206), a fixture unlocking cylinder (1207), a parallel gripper (1208), an upper fixture clutch ring (1209), an upper fixture mandrel (1211), an upper rim (1212), a fixture lock (1213), an unlocking punch (1214), a locking button (1215), and a transmission shaft (1217); the upper fixture mounting plate (1201) is fixedly installed on the upper rim lifting mechanism (2). The upper fixture mounting plate (1201), the positioning and adjusting plate (1202), and the collision buffer plate (1203) are arranged at intervals from bottom to top, and horizontal adjusting seats (1204), center adjusting seats (1205), and collision buffer springs (1206) for horizontal adjustment, centering, and anti-falling are provided between them: The bottom surface of the positioning and adjusting plate (1202) is relatively horizontally movably installed on the upper fixture mounting plate (1201) through the horizontal adjusting seats (1204) at each corner. The horizontal attitude of the positioning and adjusting plate (1202) relative to the upper fixture mounting plate (1201) is adjusted through the horizontal adjusting seats (1204) so that the positioning and adjusting plate (1202) is horizontally parallel to the lower fixture (13) and the test tire (11); Center adjusting seats (1205) and bolts are installed at each corner of the top surface of the positioning and adjusting plate (1202). The horizontal movement of the positioning and adjusting plate (1202) relative to the upper fixture mounting plate (1201) is adjusted through the center adjusting seats (1205) so that the center of the positioning and adjusting plate (1202) is centered with the lower fixture (13) and the test tire (11) below; The collision buffer plate (1203) is elastically installed on the positioning and adjusting plate (1202) through the collision buffer springs (1206) at each corner. The floating interval distance of the collision buffer plate (1203) relative to the upper fixture mounting plate (1201) is adjusted through the collision buffer springs (1206) when the upper rim lifting mechanism (2) works; The lower end of the collision buffer plate (1203) is fixedly installed with a parallel gripper (1208). The lower end of the parallel gripper (1208) passes downward through the upper fixture mounting plate (1201) and is installed with an upper fixture clutch ring (1209). The upper fixture clutch ring (1209) is used to clamp the upper fixture mandrel (1211). At the same time, the lower end of the parallel gripper (1208) is fixedly installed with an upper fixture anti-falling ring (1210). The top end of the upper fixture mandrel (1211) is arranged on the step formed by the anti-falling ring (1210) to be restricted from moving downward; The fixture unlocking cylinder (1207) is fixedly installed on the collision buffer plate (1203). The lower end of the piston rod of the fixture unlocking cylinder (1207) passes downward through the collision buffer plate (1203) and is fixedly connected to the upper end of the unlocking press head (1214) in the central through hole inside the parallel gripper (1208). The unlocking press head (1214) is driven by the fixture unlocking cylinder (1207) to move up and down in the central through hole inside the parallel gripper (1208). A central through hole is provided in the upper fixture mandrel (1211), and a transmission shaft (1217) is installed in the central through hole. The upper rim (1212) is coaxially and fixedly sleeved outside the upper fixture mandrel (1211). The upper end of the transmission shaft (1217) extends out of the central through hole of the upper fixture mandrel (1211) and is fixedly installed with a locking button (1215), and the locking button (1215) is used for pressure contact cooperation with the unlocking press head (1214). The middle part of the transmission shaft (1217) is connected to the central through hole of the upper fixture mandrel (1211) through a spring (1216) protruding from a locking buckle. The lower end of the transmission shaft (1217) passes through the central through hole of the upper fixture mandrel (1211) and is installed with a fixture locking buckle (1213). The lower ends of the upper fixture mandrel (1211) and the transmission shaft (1217) pass through the lower rim (1301) of the lower fixture (13) and extend into the central through hole of the main shaft (102), and are fixedly connected in a clamped manner through a spring (1216) protruding from a locking buckle and the fixture locking buckle (1213).

8. The tire dynamic balance tester according to claim 7, wherein: An unpenetrated groove is provided on the top surface of the upper fixture mounting plate (1201), and a horizontal adjustment seat (1204) is embedded in the groove. The horizontal adjustment seat (1204) is mainly composed of two ring blocks rotatably connected by threads. The lower ring block is embedded in the groove, and the top surface of the upper ring block is connected to the bottom surface of the positioning adjustment plate (1202). An unpenetrated blind hole is provided on the top surface of the positioning adjustment plate (1202), and a central adjustment seat (1205) is embedded in the blind hole. The lower end of the central adjustment seat (1205) is provided with a boss, and the boss is only rotatably embedded in the blind hole, so that the central adjustment seat (1205) can rotate around its own central axis in the blind hole. A waist-shaped groove penetrating up and down is provided in the middle of the central adjustment seat (1205). After a bolt passes downward through the waist-shaped groove, it then passes through the positioning adjustment plate (1202), the horizontal adjustment seat (1204), and the upper fixture mounting plate (1201) in sequence and is threadedly fixed to the upper rim lifting mechanism (2). The collision buffer spring (1206) is sleeved outside the spring bolt and located above the collision buffer plate (1203). The spring bolt passes downward through the collision buffer spring (1206), then movably passes through the collision buffer plate (1203), and is threadedly connected to the threaded hole in the positioning and adjusting plate (1202). A collision detection sensor for detecting whether there is a collision during the mold clamping process of the upper and lower jigs is arranged between the collision buffer plate (1203) and the positioning and adjusting plate (1202). The collision detection sensor continuously detects the distance between the collision buffer plate (1203) and the positioning and adjusting plate (1202). When the continuously detected distance by the collision detection sensor is greater than the preset distance threshold, the collision detection sensor generates a signal to control the motor in the upper rim lifting mechanism (2) to stop working, that is, to drive the upper rim lifting mechanism (2) to stop descending.

9. The tire dynamic balance detector according to claim 7, wherein: A parallel gripper (1208) is fixedly installed at the lower end of the collision buffer plate (1203). The parallel gripper (1208) passes downward through the upper jig mounting plate (1201). The edge of the lower end of the parallel gripper (1208) is connected and installed with an upper jig clutch ring (1209) composed of a plurality of clutch blocks. The parallel gripper (1208) is used to drive the plurality of clutch blocks to move closer to or away from the center. The upper jig clutch ring (1209) is used to clamp the upper end of the upper jig mandrel (1211). At the same time, an upper jig anti-falling ring (1210) composed of a plurality of anti-falling blocks is arranged in the middle of the lower end of the parallel gripper (1208). The upper end of the upper jig mandrel (1211) is provided with a larger-diameter outer flange. A horizontal flange is arranged at the lower end of each anti-falling block. The horizontal flange extends toward the center and supports and connects the lower step surface of the outer flange at the top end of the upper jig mandrel (1211), so that the downward movement of the upper jig mandrel (1211) is limited.

10. The tire dynamic balance detector according to claim 7, wherein: A latch extension spring (1216) is sleeved outside the top end of the transmission shaft (1217) connected to the bottom end of the lock button (1215). The central through hole of the upper jig mandrel (1211) is a stepped hole that is larger at the top and smaller at the bottom. The upper and lower ends of the latch extension spring (1216) are elastically connected to the step surface between the lock button (1215) and the transmission shaft (1217) and the step surface of the stepped hole of the upper jig mandrel (1211), respectively. At the same time, the lower ends of the upper fixture mandrel (1211) and the transmission shaft (1217) are used together to pass through the lower rim (1301) of the lower fixture (13) and extend into the central through-hole of the main shaft (102). The inner wall of the central through-hole of the main shaft (102) is provided with a tooth groove structure. The lower end of the transmission shaft (1217) is set as a conical pituitary with a smaller upper part and a larger lower part. The bottom of the central through-hole of the upper fixture mandrel (1211) is opened as a conical cavity that fits the shape of the pituitary. The conical pituitary is embedded in the conical cavity. A horizontally penetrating radial channel is opened on the inner wall of the central through-hole of the upper fixture mandrel (1211) at the conical cavity. A fixture lock (1213) is installed in the radial channel. The fixture lock (1213) can move horizontally in the radial channel. The inner end of the fixture lock (1213) is set as a conical surface for mating contact with the conical pituitary. The outer end of the fixture lock (1213) is provided with a tooth groove structure for mating with the sawtooth structure on the inner wall of the central through-hole of the main shaft (102); And the tooth groove structure on the inner wall of the central through-hole of the main shaft (102) is set as a tooth groove structure with multiple different heights along the up and down axial directions. By adjusting the different axial positions of the locking button (1215) and the transmission shaft (1217) extending into the central through-hole of the main shaft (102), the fixture lock (1213) is engaged in the tooth groove structures at different heights, thereby adjusting the distance between the upper fixture (12) and the lower fixture (13), and thus realizing different clamping forces and clamping of test tires (11) with different sizes.

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