Automatic installation device and method for brake drum nut

Abstract

The present invention belongs to the technical field of forklift wheel hub assembly, and specifically relates to an automatic installation device and method for brake drum nuts. The automatic installation device for brake drum nuts of the present invention comprises a frame and an inclined line transfer mechanism arranged on the frame; a roller installation platform, which is slidably installed on the inclined line transfer mechanism and is used to place the wheel hub; a nut screwing mechanism, which is installed in the negative direction of the Z axis of the frame and is used to place and screw the nut; a reaction force mechanism, which is installed in the positive direction of the Z axis of the frame and is used to press the bolts and nuts to be installed on the brake drum. The nuts and brake drum can be screwed and installed from bottom to top without using a mechanical arm to flip the wheel hub multiple times, which effectively solves the problems of cumbersome installation procedures and low operating efficiency of nuts and brake drums in the prior art, and does not require manual assistance, thereby ensuring the continuity of production rhythm.

Description

Technical Field

[0001] The invention belongs to the technical field of forklift wheel hub assembly, and in particular relates to a brake drum nut automatic installation device and an installation method. Background Art

[0002] When the wheel hub is assembled, the brake drum needs to be installed and fixed with nuts, wherein the brake drum is installed above the wheel hub and the nuts are below the wheel hub. The installation method of the existing brake drum and nut installation equipment is to first use a flipping mechanical arm to flip the wheel hub 180°, manually place the nut on the wheel hub, set a support member for supporting the brake drum at the bottom, use manual docking bolts, and screw the nut from top to bottom to install it with a screw shaft, and finally use a flipping mechanical arm to flip the wheel hub 180° to achieve the installation and fixation of the brake drum and the nut.

[0003] During the installation process of the existing installation and fixing method, multiple robotic arms are required to flip the wheel hub 180° at least twice. The installation process is relatively cumbersome, the equipment is large in size, and manual assistance is required for installation. It is impossible to achieve complete installation automation, and it is time-consuming and inefficient. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects in the prior art that the installation process of brake drums and nuts is complicated and requires manual assistance, and to provide an automatic installation device and method for brake drum nuts, in which the nuts are screwed from bottom to top and the wheel hub does not need to be turned over multiple times.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] As a first aspect, a brake drum nut automatic installation device comprises:

[0007] A frame and an inclined wire body transfer mechanism arranged on the frame;

[0008] A roller installation platform is slidably installed on the inclined frame line transfer mechanism and is used to place the wheel hub;

[0009] A nut screwing mechanism, installed in the negative direction of the Z axis of the frame, for placing the nut and screwing the nut;

[0010] The reaction force mechanism is installed in the positive direction of the Z axis of the frame and is used to tighten the bolts and nuts on the brake drum to be installed; wherein,

[0011] When the brake drum and the nut are screwed and installed, the axes of the reaction force mechanism, the brake roller placed on the roller installation platform and the nut screwing mechanism coincide in the Z-axis direction, the nut screwing mechanism is located below the roller installation platform, and the reaction force mechanism is located above the roller installation platform.

[0012] Furthermore, it also includes a nut transmission mechanism for feeding, clamping and transmitting nuts, and the nut transmission mechanism includes:

[0013] A clamping jaw conveying assembly is installed on the frame and is used to clamp and convey the nut to the nut screwing mechanism;

[0014] A nut feeding turntable assembly is arranged on one side of the frame and is used for placing nuts to be clamped by the clamping jaw conveying assembly;

[0015] A feeding device, arranged on one side of the frame and placed on the same side as the nut rotating table, for feeding nuts onto the nut rotating table;

[0016] The glue coating assembly is installed on the nut feeding turntable assembly and is used for coating the nuts to be clamped with glue.

[0017] Furthermore, the inclined transfer mechanism comprises:

[0018] An inclined support rod inclined along the positive direction of the X-axis toward the negative direction of the Z-axis, the inclined support rod being fixed on the frame, and an angle a between the inclined support rod and the plane where the positive direction of the X-axis is located is an acute angle;

[0019] The line transfer assembly is installed on the inclined support rod and is used to drive the roller installation platform to slide along the inclined support rod; wherein,

[0020] One end of the inclined support rod close to the nut screwing mechanism is higher than the other end of the inclined support rod.

[0021] Furthermore, the roller installation platform comprises:

[0022] Mounting frame;

[0023] The tray is slidably mounted on the mounting frame through a linear conveying mechanism; wherein,

[0024] The wire conveying mechanism comprises a wire conveying motor fixedly mounted on the mounting frame, a first driving bevel gear and a second driving bevel gear coaxially arranged with the output shaft of the wire conveying motor, a first driven bevel gear assembly and a second driven bevel gear assembly respectively meshed with the first driving bevel gear and the second driving bevel gear, and a plurality of gear sets rotating in cooperation with the first driven bevel gear assembly and the second driven bevel gear assembly; the gear sets rotate forward and reversely to drive the tray to move along the Y-axis direction;

[0025] The pallet positioning assembly is mounted on the mounting frame and is used for performing secondary positioning of the pallet along the Z-axis direction.

[0026] Furthermore, the tray positioning assembly comprises:

[0027] A positioning frame fixedly mounted on the lower end surface of the mounting frame;

[0028] A pallet positioning cylinder is fixedly mounted on the positioning frame, wherein an output end of the pallet positioning cylinder abuts against the pallet through a positioning support plate, and the pallet positioning cylinder pushes the pallet to move along the Z-axis direction;

[0029] The tray positioning guide rod has one end slidably mounted on the positioning frame and the other end fixedly connected to the positioning support plate.

[0030] Furthermore, the nut screwing mechanism comprises:

[0031] A tightening slide slidably mounted on the frame through a tightening lifting mechanism, a displacement assembly mounted on the tightening slide, a plurality of nut tightening assemblies mounted on the displacement assembly, and a nut placing module mounted at the output end of the tightening assembly; wherein,

[0032] The screwing assembly includes a screwing motor installed on the displacement assembly, a screwing installation cylinder coaxially arranged with the output shaft of the screwing motor, and a screwing shaft fixedly installed with the screwing installation cylinder in the Z-axis direction; the screwing shaft is fixedly installed with the nut placement module.

[0033] Furthermore, the nut placement module comprises:

[0034] A cylinder fixedly mounted on the screw shaft;

[0035] The connecting block, the floating balance piece and the nut gasket are sequentially installed inside the cylinder along the positive direction of the Z axis; wherein,

[0036] The floating balance member includes a floating base arranged on the connecting block, a balance boss fixedly arranged in the floating base, an elastic core shaft passing through the center hole of the balance boss, and a limit washer fixedly mounted on the lower end surface of the elastic core shaft and cooperating with the balance boss; wherein,

[0037] The elastic core shaft is slidably connected to the floating base via a guide sleeve; an elastic member is arranged between the floating base and the nut gasket, and the elastic member is sleeved on the outer side of the elastic core shaft.

[0038] Furthermore, the reaction force mechanism comprises:

[0039] A clamping frame fixedly mounted on the upper end of the frame, a clamping cylinder mounted on the clamping frame, a clamping plate fixedly mounted on the output end of the clamping cylinder, and at least two sets of guide bearings mounted on the clamping frame; wherein,

[0040] The end surface of the clamping plate corresponding to the nut placing module is provided with clamping positions corresponding to the nut placing module one by one.

[0041] As a second aspect, an installation method based on the above-mentioned brake drum nut automatic installation device comprises the following steps:

[0042] S1. Initialize the equipment, that is, move the roller installation platform to the initial position corresponding to the lower end of the inclined line transfer mechanism; adjust the reaction mechanism to the initial position at the upper end of the frame; the nut transmission mechanism is in the waiting position on one side of the frame;

[0043] S2. parameter setting, equipment adjustment and selection, that is, adjusting the position of the nut on the nut transmission mechanism according to the position of the nut on the brake drum, and selecting the components of the reaction force mechanism and the nut transmission mechanism according to the position of the nut;

[0044] S3. Nut feeding, gluing and clamping, that is, starting the nut transmission mechanism to feed, gluing and clamping the nuts and transporting them to the nut screwing mechanism;

[0045] S4. The nut transmission mechanism moves to the waiting position, that is, after the nut is clamped and transported to the nut screwing mechanism in step S3, the nut transmission mechanism moves to the waiting position;

[0046] S5. The wheel hub and the nut screwing mechanism are moved to the working position, that is, the roller installation platform is moved to the installation position corresponding to the high end of the inclined line transfer mechanism; the nut screwing mechanism is moved to the working position;

[0047] S6. The nut is pressed against the wheel hub to be installed, that is, the reaction force mechanism is moved, the bolts on the brake drum to be installed and the nut on the nut screwing mechanism are pressed to fix the wheel hub;

[0048] S7. The nut and the brake drum are screwed and fixedly installed, that is, the nut screwing mechanism is started to screw the nut from bottom to top to complete the fixed installation of the nut and the brake drum.

[0049] Furthermore, the nut loading, gluing and clamping process in the above step S3 specifically includes:

[0050] S31. Nut feeding process, that is, starting the feeding device, feeding the nuts onto the nut feeding turntable assembly;

[0051] S32. The nut gluing process, that is, starting the gluing component to perform a gluing process on the nut on the nut feeding turntable assembly;

[0052] S33. The process of clamping and transporting nuts is to move the clamping jaw conveying assembly to the clamping position, and to clamp and transport the glue-coated nuts to the nut screwing mechanism.

[0053] The beneficial effects of the automatic installation device and method for brake drum nut of the present invention are:

[0054] The present invention is provided with a nut screwing mechanism below the roller installation platform, and a reaction force mechanism is provided above the roller installation platform, so that the nut and the brake drum can be screwed and installed from bottom to top, and there is no need to use a mechanical arm to flip the wheel hub multiple times, which effectively solves the problems of complicated installation procedures of the nut and the brake drum and low working efficiency in the prior art. In addition, the present invention is provided with an inclined line transfer mechanism, a roller installation platform, a nut screwing mechanism, a reaction force mechanism, and a nut transmission mechanism which cooperate with each other without manual assistance, thereby ensuring the continuity of the production rhythm and the installation position so that the components do not interfere with each other, completely avoiding the problems of missed screwing and wrong screwing. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0056] Figure 1 is a first perspective stereogram of the automatic installation device for brake drum nuts according to an embodiment of the present invention;

[0057] Figure 2 is a second perspective stereogram of the brake drum nut automatic installation device according to an embodiment of the present invention;

[0058] Figure 3 is a side view of an automatic installation device for brake drum nuts according to an embodiment of the present invention;

[0059] Figure 4 1 is a schematic diagram of the structure of the roller installation platform from an upper perspective according to an embodiment of the present invention;

[0060] Figure 5 is a three-dimensional diagram of a roller installation platform according to an embodiment of the present invention;

[0061] Figure 6 1 is a schematic diagram of the structure of the roller installation platform from a bottom perspective according to an embodiment of the present invention;

[0062] Figure 7 is a partial structural schematic diagram of a nut transmission mechanism according to an embodiment of the present invention;

[0063] Figure 8 is an installation diagram of a nut screwing mechanism and a reaction force mechanism according to an embodiment of the present invention;

[0064] Fig. 9 is a structural schematic diagram of a nut tightening mechanism according to an embodiment of the present invention;

[0065] Fig.10 is a detailed view of a displacement assembly according to an embodiment of the present invention;

[0066] Fig.11 is a partial structural schematic diagram of a nut tightening assembly according to an embodiment of the present invention;

[0067] Fig.12 yes Fig.10 A cross-sectional view of

[0068] Fig.13 It is a structural schematic diagram of a cylinder according to an embodiment of the present invention;

[0069] Fig.14 is a schematic structural diagram of a reaction force mechanism according to an embodiment of the present invention;

[0070] Fig.15 is a flowchart of the steps of the installation method of the brake drum nut automatic installation device according to an embodiment of the present invention;

[0071] Fig.16 The present invention is a flowchart of the process of feeding, gluing and clamping nuts according to an embodiment of the present invention.

[0072] In the figure: 1, frame, 2, inclined line transfer mechanism, 21, inclined support rod, 22, line transfer assembly, 3, roller installation platform, 31, mounting frame, 32, tray, 33, line conveying mechanism, 331, line conveying motor, 332, first active bevel gear, 333, second active bevel gear, 334, first driven bevel gear assembly, 335, second driven bevel gear assembly, 336, gear set, 34, tray positioning assembly, 341, positioning frame, 342 , pallet positioning cylinder, 343, pallet positioning guide rod, 344, positioning support plate, 4, nut screwing mechanism, 41, tightening slide, 42, tightening lifting mechanism, 43, displacement assembly, 431, displacement motor, 432, fixing ring, 433, lower rotating disk, 434, upper rotating disk, 435, gear set, 4351, driving gear, 4352, driven gear, 436, connecting column, 437, variable diameter corrugated hole, 438, rolling wheel, 439, radial sliding assembly , 4391, radial guide rail, 4392, radial slider, 44, nut tightening assembly, 441, screwing motor, 442, screwing installation cylinder, 443, screwing shaft, 45, nut placement module, 451, cylinder, 4511, rounding unit, 4512, arc groove, 452, connecting block, 453, floating balance member, 4531, floating base, 4532, balancing boss, 4533, elastic mandrel, 4534, limit gasket, 4535, guide sleeve, 4 54, nut gasket, 46, tightening positioning pin cylinder, 47, mounting plate, 5, reaction mechanism, 51, clamping frame, 52, clamping cylinder, 53, clamping plate, 6, nut transmission mechanism, 61, clamping jaw conveying assembly, 611, horizontal transmission assembly, 612, material picking clamping jaw assembly, 62, nut feeding turntable assembly, 621, feeding frame, 622, rotating table motor, 623, nut rotating table, 63, feeding device, 64, glue coating assembly, 7, nut, 8, wheel hub, DETAILED DESCRIPTION

[0073] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0074] like Figure 1-Figure 14The specific embodiment of the automatic installation device for the nut of a brake drum of the present invention shown in the figure comprises a frame 1, an inclined line transfer mechanism 2 arranged on the frame 1, a roller installation platform 3, a nut screwing mechanism 4, and a reaction mechanism 5. The roller installation platform 3 is slidably installed on the inclined line transfer mechanism 2, and is used to place the wheel hub. The nut screwing mechanism 4 is installed in the negative direction of the Z axis of the frame 1, and is used to place the nut 7 and screw the nut 7. The reaction mechanism 5 is installed in the positive direction of the Z axis of the frame 1, and is used to press the bolts and nuts 7 to be installed on the brake drum. When the brake drum and the nut 7 are screwed and installed, the axes of the reaction mechanism 5, the brake roller placed on the roller installation platform 3, and the nut screwing mechanism 4 in the Z axis direction coincide. The nut screwing mechanism 4 is located below the roller installation platform 3, and the reaction mechanism 5 is located above the roller installation platform 3.

[0075] The present invention is provided with a nut screwing mechanism 4 below the roller installation platform 3, and a reaction mechanism 5 above the roller installation platform 3, so that the nut 7 and the brake drum can be screwed and installed from bottom to top, without the need to use a mechanical arm to repeatedly flip the wheel hub 8, effectively solving the problem of cumbersome installation procedures and low working efficiency of the nut 7 and the brake drum in the prior art. In addition, the present invention is provided with an inclined line transfer mechanism 2, a roller installation platform 3, a nut screwing mechanism 4, and a reaction mechanism 5, which cooperate with each other without manual assistance, ensuring the continuity of the production rhythm, and the installation position makes the components non-interfering with each other, completely avoiding the problem of missed screwing and wrong screwing.

[0076] It should be further explained that the automatic installation device for brake drum nuts in this embodiment also includes a nut transmission mechanism 6 for feeding, clamping and conveying nuts 7, and the nut transmission mechanism 6 includes a clamping jaw conveying assembly 61, a nut feeding turntable assembly 62, a feeding device 63 and a gluing assembly 64. The clamping jaw conveying assembly 61 is installed on the frame 1, and is used to clamp and transport the nuts 7 to the nut screwing mechanism 4. The nut feeding turntable assembly 62 is arranged on one side of the frame 1, and is used to place the nuts 7 to be clamped by the clamping jaw conveying assembly 61. The feeding device 63 is arranged on one side of the frame 1 and is placed on the same side as the nut rotating table 623, and is used to feed the nuts 7 onto the nut rotating table 623. The gluing assembly 64 is installed on the nut feeding turntable assembly 62, and is used to glue the nuts 7 to be clamped.

[0077] like Figure 1 and Figure 2As shown, the clamping jaw conveying assembly 61 includes a transverse conveying assembly 611 installed on the frame 1 along the Y-axis direction, a material picking clamping jaw assembly 612 fixedly installed at the output end of the transverse conveying assembly 611, and the transverse conveying assembly 611 includes a material picking and placing transfer cylinder installed on the frame 1, a transfer slide fixedly connected to the output end of the material picking and placing transfer cylinder, and a transmission guide rail installed in cooperation with the transfer slide, and the transmission guide rail is installed on the frame 1 along the Y-axis direction. The transverse conveying assembly 611 is correspondingly provided with a clamping position for clamping the nut 7, a material placing position for placing the nut 7, and a waiting position arranged between the clamping position and the material placing position.

[0078] The material picking jaw assembly 612 includes a plurality of pneumatic jaws. In this embodiment, the number of pneumatic jaws is six. The number of pneumatic jaws can be adjusted as needed, and there is no absolute limit on the number of starting jaws.

[0079] The nut feeding turntable assembly 62 includes a feeding frame 621, a turntable motor 622 installed on the feeding frame 621, and a nut turntable 623 coaxially arranged with the output shaft of the turntable motor 622. A plurality of nut 7 feeding positions are arranged on the nut turntable 623. The feeding device 63 cooperates and abuts against the nut turntable 623. The feeding device 63 in this embodiment adopts an externally purchased vibrating material sorting machine. It should be understood that any feeding device 63 that can realize nut 7 feeding that can be purchased on the market can be used, and the structure of the feeding device 63 will not be elaborated on here.

[0080] The nut rotating table 623 in this embodiment is a six-division nut 7 feeding turntable, and the turntable motor 622 is a Siemens V90 servo motor. Six proximity switches are installed at the nut 7 feeding position to detect whether the nut 7 is in place. A proximity switch is installed at the outlet of the material sorter to detect whether there are bolts at the outlet, and a stop-material cylinder is installed at the outlet to control the transmission of the nut 7. Nut 7 blocking and releasing process: the equipment applies for nut 7 loading. If the outlet of the material sorter detects that there are already sorted bolts, and there is no nut 7 at the corresponding bolt position of the turntable, the stop-material cylinder descends to release the material, and the nut 7 is transported from the outlet of the material sorter to the corresponding nut 7 position on the turntable, and then the stop-material cylinder rises to the initial position to block the transmission of the next nut 7, and the nut 7 feeding process ends here.

[0081] Before the nut 7 in this embodiment is installed on the brake drum, anaerobic glue needs to be applied to the thread of the nut 7. The glue coating component 64 includes a glue coating head part, a horizontal moving part of the glue coating head, and an up and down moving part of the glue coating head. The glue coating component 64 that can be thought of by those skilled in the art is not described in detail here. The glue coating process is that the equipment applies glue to the nut 7, the upper and lower cylinders of the glue coating descend to the gluing position, and a signal to start gluing is given to the glue coating head. After the glue coating head finishes gluing, the glue coating head feeds back a glue coating completion signal to the equipment PLC, and the upper and lower cylinders of the glue coating rise to the initial position, and the gluing process ends here.

[0082] like Figure 3 As shown, the inclined transfer mechanism in this embodiment includes an inclined support rod 21 inclined from the positive direction of the X-axis to the negative direction of the Z-axis and a linear transfer assembly 22. The inclined support rod 21 is fixed on the frame 1, and the angle a between the inclined support rod 21 and the plane where the positive direction of the X-axis is located is an acute angle. In this embodiment, a=10°. The design is adjusted according to the length of the inclined support rod 21, the placement height of the brake drum, the discharge position of the nut 7, etc. There is no absolute limitation on the degree of angle a.

[0083] The line transfer assembly 22 is installed on the inclined support rod 21, and is used to drive the roller installation platform 3 to slide along the inclined support rod 21, wherein one end of the inclined support rod 21 close to the nut screwing mechanism 4 is higher than the other end of the inclined support rod 21. Specifically, the line transfer assembly 22 includes a line transfer cylinder installed on the inclined support rod 21, a line transfer slide rail arranged along the extension direction of the inclined support rod 21, and a line transfer slider matched with the line transfer slide rail. The roller installation platform 3 is fixedly connected to the line transfer slider, that is, the roller installation platform 3 follows the line transfer slider to slide along the inclined support rod 21. In this embodiment, the inclined support rod 21 inclinedly arranged on the frame 1 is used to realize a drive to drive the roller installation platform 3 to move upward and forward at the same time and / or downward and backward at the same time. The structure is simple, reliable, and does not occupy space, and avoids the problem of the entire device occupying a large space in order to solve the mutual interference of multiple drives.

[0084] See also Figures 4 to 6The roller installation platform 3 includes a mounting frame 31, a tray 32 and a tray positioning assembly 34. The tray 32 is slidably mounted on the mounting frame 31 through a linear conveying mechanism 33, wherein the linear conveying mechanism 33 includes a linear conveying motor 331 fixedly mounted on the mounting frame 31, a first active bevel gear 332 and a second active bevel gear 333 coaxially arranged with the output shaft of the linear conveying motor 331, a first driven bevel gear assembly 334 and a second driven bevel gear assembly 335 meshingly connected with the first active bevel gear 332 and the second active bevel gear 333, respectively, and a plurality of gear teeth groups 336 rotating in cooperation with the first driven bevel gear assembly 334 and the second driven bevel gear assembly 335; the gear teeth group 336 rotates forward and reversely to drive the tray 32 to move along the Y-axis direction. The tray positioning assembly 34 is mounted on the mounting frame 31 and is used for secondary positioning of the tray 32 along the Z-axis direction. The pallet positioning assembly 34 includes a positioning frame 341 fixedly mounted on the lower end surface of the mounting frame 31, a pallet positioning cylinder 342 and a pallet positioning guide rod 343. The pallet positioning cylinder 342 is fixedly mounted on the positioning frame 341. The output end of the pallet positioning cylinder 342 abuts against the pallet 32 ​​through the positioning support plate. The pallet positioning cylinder 342 pushes the pallet 32 ​​to move along the Z-axis direction. One end of the pallet positioning guide rod 343 is slidably mounted on the positioning frame 341, and the other end is fixedly connected to the positioning support plate 344.

[0085] In this embodiment, there are two pallet positioning assemblies 34, which are respectively close to the two ends of the mounting frame 31, to ensure that the pallet 32 ​​is stably kept horizontal for precise positioning in the up and down directions. A positioning hole is provided on the pallet 32, and the positioning hole and the pallet positioning guide rod 343 are slidably arranged. One pallet positioning assembly 34 is provided with two pallet positioning guide rods 343, which are respectively arranged on both sides of the pallet positioning cylinder 342, to further ensure that the pallet 32 ​​moves smoothly and horizontally during the positioning process.

[0086] It should be noted that, as an implementation mode, the first driven bevel gear assembly 334 and the second driven bevel gear assembly 335 have the same structure and are symmetrically arranged on the mounting frame 31. In this embodiment, the first driven bevel gear assembly 334 is taken as an example. The first driven bevel gear assembly 334 includes a first driven bevel gear meshingly connected with the first driving bevel gear 332, a first driven shaft coaxially arranged with the first driven bevel gear, and a plurality of transmission bevel gears coaxially arranged with the first driven shaft. The first driven shaft runs through the entire mounting frame 31 along the Y-axis direction, and a plurality of transmission bevel gears are evenly arranged on the first driven shaft. The number of gear teeth 336 is consistent with the number of transmission bevel gears. The gear set 435 includes a guide wheel fixedly installed on the mounting frame 31 and a guide bevel gear coaxially arranged with the guide wheel. The guide bevel gear is meshingly connected with the corresponding transmission bevel gear.

[0087] like Figures 8 to 13As shown, the nut tightening mechanism 4 includes a tightening slide 41 slidably installed on the frame 1 through a tightening lifting mechanism 42, a displacement assembly 43 installed on the tightening slide 41, a plurality of nut tightening assemblies 44 installed on the displacement assembly 43, and a nut placement module 45 installed at the output end of the tightening assembly; wherein, the nut 7 tightening assembly includes a tightening motor 441 installed on the displacement assembly 43, a tightening mounting cylinder 442 coaxially arranged with the output shaft of the tightening motor 441, and a tightening shaft 443 fixedly installed with the tightening mounting cylinder 442 in the Z-axis direction; the tightening shaft 443 is fixedly installed with the nut placement module 45. The tightening shaft in this embodiment is a hexagonal spline shaft, and the end of the screw-on installation tube 442 that cooperates with the tightening shaft is set as an inner hexagonal spline sleeve, and the inner hexagonal spline sleeve is connected to the outer hexagonal of the tightening shaft. The screw-on installation tube 442 is fixed to the connecting plate by bolts. In the specific installation, a spring is arranged between the tightening shaft and the screw-on installation tube 442, so that the extension and contraction amount of the tightening shaft is about 50mm. During operation, the tightening slide 41 will rise to a fixed position to ensure sufficient spring compression. When tightening, it moves upward while tightening by the spring thrust until the nut 7 is tightened into place. The clearance between the spline shaft and the spline sleeve plays a certain degree of angle floating for the nut 7 to place the sleeve, and further ensures that the nut 7 does not tilt when placed on the nut gasket 454. Ensure that the nut 7 is placed flat and stable.

[0088] like Figure 8 As shown, the tightening and lifting mechanism 42 in this embodiment includes a tightening and lifting servo fixedly installed on the frame 1 and a tightening and lifting guide rail symmetrically installed on the frame 1, the output end of the tightening and lifting cylinder is fixedly installed on the tightening slide 41, and a tightening and lifting slider is fixedly installed on the tightening slide 41 corresponding to the guide rail, and the tightening and lifting slider is cooperatively connected with the tightening and lifting guide rail; start the tightening and lifting servo to drive the tightening and lifting slider to slide along the tightening and lifting guide rail.

[0089] When in use, first adjust the position of the nut 7 placed on the sleeve through the displacement mechanism to adapt to the position of the wheel hub 8 to be installed. When the wheel hubs 8 of different sizes are installed with bolts and nuts 7, the displacement assembly 43 can change the radial positions of multiple nuts 7 at the same time, and can ensure that multiple nuts 7 are located on the same circumference. As for the reaction mechanism 5, it is only necessary to change the clamping plates 53 of different sizes. The press-fitting is simple and reliable, and the traditional installation method of the brake drum nut 7 is changed to a method of screwing from bottom to top, which saves the process of multiple flipping of the wheel hub 8 and does not require additional flipping equipment, thereby greatly reducing labor, time and equipment costs.

[0090] As an embodiment, the nut placement module 45 includes a cylinder 451 fixedly mounted on the screw shaft 443, a connecting block 452, a floating balancing member 453 and a nut gasket 454 which are sequentially installed inside the cylinder 451 along the positive direction of the Z axis; wherein the floating balancing member 453 includes a floating base 4531 arranged on the connecting block 452, a balancing boss 4532 fixedly arranged in the floating base 4531, an elastic core shaft 4533 passing through the center hole of the balancing boss 4532, and a limiting gasket 4534 fixedly mounted on the lower end surface of the elastic core shaft 4533 and cooperating with the balancing boss 4532; wherein the elastic core shaft 4533 and the floating base 4531 are slidably connected via a guide sleeve 4535; an elastic member is arranged between the floating base 4531 and the nut gasket 454, and the elastic member is sleeved on the outer side of the elastic core shaft 4533.

[0091] Specifically, a plurality of rounded units 4511 and a plurality of arc-shaped grooves 4512 are arranged on the inner wall edge corresponding to the upper end face of the cylinder 451, and the rounded units 4511 and the arc-shaped grooves 4512 are arranged at intervals; the upper circle diameter D1 surrounded by the plurality of rounded units 4511 is larger than the lower circle diameter D2. The nut gasket 454 includes a placement portion for placing the outer ring of the nut 7 and a positioning boss for positioning the nut 7; when the nut 7 is placed in the cylinder 451, the center hole of the nut 7 is sleeved on the outer peripheral surface of the positioning boss. A plurality of rounded units 4511 and a plurality of arc-shaped grooves 4512 are arranged at intervals on the inner wall edge corresponding to the upper end face of the cylinder 451, and the upper circle diameter D1 surrounded by the rounded units 4511 is larger than the lower circle diameter D2, so that the inner wall of the upper end face of the entire cylinder 451 forms a trumpet-shaped opening, ensuring that the nut 7 can be quickly placed in the cylinder 451 at any angle, and the placement is stable and convenient. A nut gasket 454 with a positioning boss is provided at the top of the cylinder 451. After the nut 7 is placed in the cylinder 451, the center hole of the nut 7 is clamped on the positioning boss, which can realize the rapid placement and accurate positioning of the nut 7. Breaking the conventional design idea, the nut screwing mechanism 4 is fixed under the frame 1, and a mobile wire conveying mechanism 33 and a tray positioning assembly 34 are designed. When working, the workpiece is transported to the top of the nut screwing mechanism 4 and tightened from bottom to top.

[0092] Reference Fig. 9The displacement assembly 43 in this embodiment includes a displacement motor 431 fixedly mounted on the tightening slide 41, a fixing ring 432 rotatably mounted on the tightening slide 41, a lower rotating disk 433, an upper rotating disk 434, and a plurality of variable-diameter corrugated holes 437. The lower rotating disk 433 is rotatably mounted on the tightening slide 41, the displacement motor 431 is transmission-connected to the lower rotating disk 433 through a gear set 435, the upper rotating disk 434 is fixedly connected to the lower rotating disk 433 through a plurality of connecting columns 436, and a plurality of variable-diameter corrugated holes 437 are provided along the circumference of the upper rotating disk 434, and the mounting plate 47 is slidably connected to the variable-diameter corrugated holes 437 through a rolling wheel 438. Among them, a radial sliding assembly 439 is provided between the mounting plate 47 and the fixing ring 432, so as to move the mounting plate 47 along the radial direction of the fixing ring 432.

[0093] The shifting process of the shifting component 43 is: starting the shifting motor 431, the shifting motor 431 rotates to drive the driving gear 4351 to rotate, the driving gear 4351 rotates to drive the driven gear 4352 meshing with the outside to rotate, thereby realizing the rotation of the lower rotating disk 433 and the upper rotating disk 434 directly or indirectly fixedly connected to the driven gear 4352, and the upper rotating disk 434 rotates, so that the rolling wheel 438 rolls in the slidingly set variable diameter corrugated hole 437, and utilizes the different distances from the variable diameter corrugated hole 437 to the center point of the upper rotating disk 324, according to the different positions of the rolling wheel 438 in the variable diameter corrugated hole 437, the rolling wheel 438 drives the radial slider 4392 radially set in the mounting plate 47 to move radially toward the center or periphery of the fixing ring 432, thereby realizing that the diameter of the nut mounting circle surrounded by multiple nut 7 placement devices becomes larger or smaller, so as to be suitable for the installation of nuts 7 of wheel hubs 8 of different sizes. A tightening positioning latch cylinder 46 is provided on the tightening slide 41 , and the tightening slide 41 is fixedly / movably connected to the upper rotating disk 434 through the tightening positioning latch cylinder 46 and the latch.

[0094] The gear set 435 in this embodiment includes a driving gear 4351 coaxially arranged with the output shaft of the position-changing motor 431, and a driven gear 4352 externally meshed with the driving gear 4351, and the driven gear 4352 is fixedly connected to the lower rotating disk 433. The radial sliding assembly 439 includes a radial guide rail 4391 fixedly mounted on the mounting plate 47 and a radial slider 4392 fixedly mounted on the fixing ring 432. The rotation of the position-changing motor 431 drives the upper rotating disk 434 to rotate, and the rolling wheel 438 rolls in the variable-diameter corrugated hole 437, driving the mounting plate 47 to slide along the radial direction of the fixing ring 432 through the radial slider 4392 assembly and the fixing ring 432.

[0095] like Fig.15 and Fig.16 As shown, the preparation method based on the above brake drum nut automatic installation device includes the following steps:

[0096] S1. Initialize the equipment, that is, move the roller installation platform 3 to the initial position corresponding to the lower end of the inclined line transfer mechanism 2; adjust the reaction force mechanism 5 to the initial position at the upper end of the frame 1; and the nut transmission mechanism 6 is in the waiting position on one side of the frame 1.

[0097] S2. Parameter setting, equipment adjustment and selection, that is, adjusting the position of the nut 7 on the nut transmission mechanism 6 according to the position of the nut 7 on the brake drum, and selecting the appropriate components of the reaction force mechanism 5 and the nut transmission mechanism 6 according to the position of the nut 7.

[0098] S3. Loading, gluing and clamping the nuts 7, that is, starting the nut transmission mechanism 6 to load, gluing and clamp the nuts 7 and transport them to the nut screwing mechanism 4.

[0099] S4. The nut transmission mechanism 6 moves to the waiting position, that is, after the nut 7 in step S3 is clamped and transported to the nut screwing mechanism 4, the nut transmission mechanism 6 moves to the waiting position.

[0100] S5. The wheel hub and the nut screwing mechanism 4 are moved to the working position, that is, the roller installation platform 3 is moved to the installation position corresponding to the high end of the inclined line transfer mechanism 2, and the wheel hub is moved to the tightening working position; the nut screwing mechanism 4 is moved to the working position.

[0101] S6. Tightening the nut 7 and the brake drum, that is, moving the reaction force mechanism 5, tightening the bolts on the brake drum to be installed and the nut 7 on the nut tightening mechanism 4, and fixing the wheel hub; it should be noted that while moving the reaction force mechanism 5, start the tightening positioning latch cylinder 46, insert the latch at the output end of the tightening positioning latch cylinder 46 into the positioning hole on the upper rotating disk 434, and position the upper rotating disk 434 and the fixing ring 432. In this embodiment, three positioning holes are provided, and the three positioning holes correspond to three diameters of nut installation circles respectively.

[0102] S7. The nut 7 is screwed and fixedly installed on the brake drum, that is, the nut screwing mechanism 4 is started to screw the nut 7 from the bottom to the top, thereby completing the fixed installation of the nut 7 on the brake drum.

[0103] The feeding, gluing and clamping process of the nut 7 in step S3 specifically includes:

[0104] S31. The nut 7 feeding process is to start the feeding device 63 to feed the nut 7 onto the nut feeding turntable assembly 62.

[0105] S32. The gluing process of the nut 7 is to start the gluing component 64 to perform the gluing process on the nut 7 on the nut feeding turntable component 62.

[0106] In this embodiment, six nuts 7 are taken as an example, and the specific feeding and gluing process is as follows: the nut rotating table 623 rotates to the first nut 7 feeding position and the gluing horizontal moving cylinder moves to the gluing position, and the first nut 7 feeding is applied, and the nut 7 feeding process is executed. The nut rotating table 623 rotates to the second nut 7 feeding position and the gluing horizontal moving cylinder moves to the gluing position, and the second nut 7 feeding is applied, and the nut 7 feeding process is executed, and the gluing of the nut 7 at the first nut 7 feeding position is applied, and the gluing process is executed. The nut rotating table 623 rotates to the third nut 7 feeding position and the third nut 7 feeding is applied, and the nut 7 feeding process is executed; the gluing of the second nut 7 is applied, and the gluing process is executed. The nut rotating table 623 rotates to the fourth nut 7 feeding position and the fourth nut 7 feeding is applied, and the nut 7 feeding process is executed; the gluing of the third nut 7 is applied, and the gluing process is executed. The nut rotating table 623 turns to the fifth nut 7 loading position, and applies for the fifth nut 7 loading at the same time, and executes the nut 7 loading process; applies for the fourth nut 7 gluing, and executes the gluing process. The nut rotating table 623 turns to the sixth nut 7 loading position, and applies for the sixth nut 7 loading at the same time, and executes the nut 7 loading process; applies for the fifth nut 7 gluing, and executes the gluing process. The nut rotating table 623 turns to the nut 71 loading position, and performs the following operations. After the end, jump to the next step: apply for the sixth nut 7 gluing, and execute the gluing process. The nut rotating table 623 goes to the nut 7 picking position, and the gluing horizontal moving cylinder returns to the initial state. At this point, the nut 7 loading process ends, and the picking and unloading mechanism is allowed to pick up the nut 7. After the nut 7 is grabbed, this cycle ends, jumps to the first step, and starts the next set of nut 7 loading.

[0107] The nut rotating table 623 is designed with 6 divisions, and there are 6 sets of pneumatic clamps. The feeding device 63, pneumatic clamps, nut screwing mechanism 4, wire conveying mechanism 33, etc. are independent of each other, so that the feeding, oiling, transportation, tightening and pallet 32 ​​conveying of the 6 nuts 7 can be carried out simultaneously and crosswise without interfering with each other, which greatly improves the productivity.

[0108] S33. The process of clamping and transporting the nut 7 is to move the clamping jaw conveying assembly 61 to the clamping position, and to clamp and transport the glue-coated nut 7 to the nut screwing mechanism 4.

[0109] The whole process includes 1 material picking, unloading and transferring cylinder, 1 material picking stop cylinder, 1 nut 7 material picking and unloading upper and lower cylinders, and 6 nut 7 material picking claw cylinders. In order to save the material picking cycle, the material picking, unloading and transferring cylinder is equipped with three positions: clamping position, material discharging position and waiting position, which are realized by a double electric valve and a stop cylinder. When moving to the left, the cylinder can reach the discharging position; when moving to the right, when the material picking stop cylinder extends to the blocking position, the material picking, unloading and transferring cylinder can only move to the middle waiting position. After the nut 7 is loaded and glued, the material picking stop cylinder returns to its original position, and the material picking, unloading and transferring cylinder moves to the material picking position.

[0110] The clamping process includes the following steps:

[0111] Step 1: The material picking and stopping cylinder moves to the blocking position, the material picking and unloading transfer cylinder moves to the middle waiting position, the 6 sets of pneumatic grippers are all released, and the upper and lower cylinders of the material picking and unloading are in the upper initial state;

[0112] Step 2, waiting for the command to allow the gripper conveying assembly 61 to take the nut 7, and the nut rotating platform 623 rotates to the nut 7 taking position;

[0113] Step 3, take the material and stop the cylinder and extend it to the original position;

[0114] Step 4, take and place the material and transfer the cylinder to the material taking position;

[0115] Step 5, the upper and lower cylinders for taking and discharging materials extend to the lower material taking position;

[0116] Step 6, 6 groups of clamping jaws clamp the nut 7 simultaneously;

[0117] Step 7, the upper and lower cylinders for taking and discharging materials return to the upper initial state, at which time, the six sensors for detecting the presence or absence of nuts 7 on the nut rotating platform 623 do not send signals. The process of taking nuts 7 ends here.

[0118] After the nut 7 is clamped, the jaw conveying assembly 61 conveys the nut 7 to the discharge position. Placing the nut 7 includes the following steps:

[0119] Step 1, obtaining a command from the nut screwing mechanism 4 to allow the nut 7 to be placed;

[0120] Step 2, take the discharge transfer cylinder to the discharge position;

[0121] Step 3, the upper and lower cylinders for taking and releasing materials extend to the lower position, and at the same time, the material stop cylinder for taking the material stops at the blocking position;

[0122] Step 4, the six groups of jaws are opened simultaneously, and the nut 7 is placed in the nut placement module 45;

[0123] Step 5, the upper and lower cylinders for taking and discharging materials return to the upper position;

[0124] Step 6, take the material and transfer the cylinder to the middle waiting position. So far, the process of placing the nut 7 is finished, and the nut transmission mechanism 6 returns to the operation of taking the nut 7 and starts the next cycle.

[0125] The roller installation platform 3 includes a linear conveying mechanism 33 that drives the tray 32 to move along the Y-axis direction, and also includes a station stopper, an RFID reader and writer, and a tray positioning assembly 34. The linear conveying mechanism 33 in this embodiment is driven by a motor alone and can be pneumatically driven to move into the device.

[0126] The positioning, pressing and screwing process of the brake drum and the nut 7 includes the following steps:

[0127] Step 1, the tray 32 enters the station stopper, reads the RFID data, and obtains the ID and model information of the workpiece on the tray 32;

[0128] Step 2, the tray positioning assembly 34 drives the tray 32 to perform secondary positioning;

[0129] Step 3, after the nut 7 is placed in the nut placement module 45, the position changing motor 431 is started to drive the tightening shaft to change position to the corresponding bolt center distance position;

[0130] Step 4, the nut screwing mechanism 4 allows the wire conveying mechanism 33 to operate;

[0131] Step 5, the line body transfer cylinder extends, and the line body drives the tray 32 to move as a whole, and moves the workpiece to the upper side of the tightening axis corresponding to the Z-axis direction;

[0132] Step 6, the tightening position motor 431 sends the tightening shaft to the tightening position;

[0133] Step 7, requesting the nut tightening mechanism 4 to start the tightening process;

[0134] Step 8, after the tightening process is completed, the inclined wire body transfer mechanism 2 returns to the wire body position, and the position changing motor 431 returns to its original position;

[0135] Step 9, the tray positioning cylinder 342 descends;

[0136] Step 10: The station stopper is released. At this point, the line conveying process ends and jumps to the first step to start the next cycle.

[0137] The position-changing motor 431 drives the tightening shaft to automatically change radial position to meet the tightening requirements of various machine types with different center distances. The nut 7 is tightened from bottom to top, the nut screwing mechanism 4 is below the tray 32, and a reaction mechanism 5 is provided above the equipment.

[0138] The use process of the automatic installation equipment for brake drum nuts in this embodiment is as follows: when the equipment is initialized, the position shifting motor 431 moves to the nut 7 discharge position, and after the clamping jaw conveying assembly 61 takes the nut 7 on the nut rotating table 623, the nut screwing mechanism 4 executes the nut 7 discharge process; after the nut 7 is placed in the cylinder 451, the roller installation platform 3 is notified to perform the line body conveying process; at the same time, the position shifting motor 431 moves to the tightening position, and after the line body tray 32 is in place, the tightening positioning pin cylinder 46 under the workpiece and the clamping cylinder 52 above the workpiece act at the same time to position the workpiece, and the clamping cylinder 52 can also support the bolt to prevent shaking during the tightening process, and the tightening lifting cylinder rises to bring the tightening shaft to the tightening position, and multiple tightening shafts are tightened at the same time. After the tightening is completed, the workpiece's clamping cylinder 52 and tightening positioning pin cylinder 46 return to their initial positions at the same time, and the tightening lifting cylinder descends to the initial position. Notify the roller line body to return to the line body position, and the position change motor 431 returns to its original position. At this point, the tightening process is completed.

[0139] It should be understood that the specific embodiments described above are only used to explain the present invention, and are not used to limit the present invention. Obvious changes or modifications derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims

1. An automatic installation device for brake drum nuts, characterized in that: include: A frame (1) and an inclined wire transfer mechanism (2) arranged on the frame (1); A roller installation platform (3) is slidably mounted on the inclined line transfer mechanism (2) and is used to place the wheel hub; A nut screwing mechanism (4) is mounted on the negative direction of the Z axis of the frame (1) and is used for placing the nut (7) and screwing the nut (7); The reaction force mechanism (5) is installed in the positive direction of the Z axis of the frame (1) and is used to press the bolts and nuts (7) to be installed on the brake drum; wherein: When the brake drum and the nut (7) are screwed together for installation, the axes of the reaction mechanism (5), the brake roller placed on the roller installation platform (3), and the nut screwing mechanism (4) in the Z-axis direction coincide with each other, the nut screwing mechanism (4) is located below the roller installation platform (3), and the reaction mechanism (5) is located above the roller installation platform (3); A nut transmission mechanism (6) for feeding, clamping and transmitting nuts (7), the nut transmission mechanism (6) comprising: A clamping jaw conveying assembly (61) is mounted on the frame (1) and is used to clamp the nut (7) and convey it to the nut screwing mechanism (4); A nut feeding turntable assembly (62) is arranged on one side of the frame (1) and is used to place nuts (7) to be clamped by the clamping jaw conveying assembly (61); the nut feeding turntable assembly (62) comprises a feeding frame (621), a turntable motor (622) mounted on the feeding frame (621), and a nut turntable (623) coaxially arranged with an output shaft of the turntable motor (622); a loading device (63), arranged on one side of the frame (1) and placed on the same side as the nut rotating platform (623), and used for loading nuts (7) onto the nut rotating platform (623); A glue coating assembly (64) mounted on the nut feeding turntable assembly (62) and used for coating the nuts (7) to be clamped with glue; The inclined line transfer mechanism (2) comprises: an inclined support rod (21) inclined along the positive direction of the X-axis toward the negative direction of the Z-axis, the inclined support rod (21) being fixed on the frame (1), and an angle a between the inclined support rod (21) and a plane where the positive direction of the X-axis is located being an acute angle; The line transfer assembly (22) is mounted on the inclined support rod (21) and is used to drive the roller installation platform (3) to slide along the inclined support rod (21); wherein: One end of the inclined support rod (21) close to the nut screwing mechanism (4) is higher than the other end of the inclined support rod (21); The roller installation platform (3) comprises: Mounting frame (31); The tray (32) is slidably mounted on the mounting frame (31) via a linear conveying mechanism (33); wherein: The wire conveying mechanism (33) comprises a wire conveying motor (331) fixedly mounted on the mounting frame (31), a first driving bevel gear (332) and a second driving bevel gear (333) coaxially arranged with the output shaft of the wire conveying motor (331), a first driven bevel gear assembly (334) and a second driven bevel gear assembly (335) respectively meshing with the first driven bevel gear (332) and the second driven bevel gear (333), and a plurality of gear teeth groups (336) rotating in cooperation with the first driven bevel gear assembly (334) and the second driven bevel gear assembly (335); the gear teeth group (336) rotates forward and reversely to drive the tray (32) to move along the Y-axis direction; At least one set of tray positioning components (34) mounted on the mounting frame (31) and used for performing secondary positioning of the tray (32) in the Z-axis direction; The nut tightening mechanism (4) comprises: a tightening slide (41) slidably mounted on the frame (1) via a tightening lifting mechanism (42), a displacement assembly (43) mounted on the tightening slide (41), a plurality of nut tightening assemblies (44) mounted on the displacement assembly (43), and a nut placement module (45) mounted at an output end of the tightening assembly; The nut placement module (45) comprises: Cylinder (451); A connecting block (452), a floating balance member (453), and a nut gasket (454) are sequentially installed inside the cylinder (451) along the positive direction of the Z axis; wherein: The floating balancing member (453) comprises a floating base (4531) arranged on the connecting block (452), a balancing boss (4532) fixedly arranged in the floating base (4531), an elastic core shaft (4533) inserted into the center hole of the balancing boss (4532), and a limiting gasket (4534) fixedly mounted on the lower end surface of the elastic core shaft (4533) and cooperating with the balancing boss (4532); wherein the elastic core shaft (4533) and the floating base (4531) are slidably connected via a guide sleeve (4535); an elastic member is arranged between the floating base (4531) and the nut gasket (454), and the elastic member is sleeved on the outer side of the elastic core shaft (4533).

2. The automatic installation device for brake drum nuts according to claim 1, characterized in that: The tray positioning assembly (34) comprises: A positioning frame (341) fixedly mounted on the lower end surface of the mounting frame (31); A pallet positioning cylinder (342) is fixedly mounted on the positioning frame (341), the output end of the pallet positioning cylinder (342) abuts against the pallet (32) via a positioning support plate (344), and the pallet positioning cylinder (342) pushes the pallet (32) to move along the Z-axis direction; A tray positioning guide rod (343) has one end slidably mounted on the positioning frame (341) and the other end fixedly connected to the positioning support plate (344).

3. The automatic installation device for brake drum nuts according to claim 1 is characterized in that: The nut (7) screwing assembly comprises a screwing motor (441) mounted on the displacement assembly (43), a screwing mounting cylinder (442) coaxially arranged with the output shaft of the screwing motor (441), and a screwing shaft (443) fixedly mounted with the screwing mounting cylinder (442) in the Z-axis direction; the screwing shaft (443) is fixedly mounted with the nut placement module (45); and the cylinder body (451) is fixedly mounted with the screwing shaft (443).

4. The automatic installation device for brake drum nuts according to claim 3 is characterized in that: The reaction force mechanism (5) comprises: A pressing frame (51) fixedly mounted on the upper end of the frame (1), a pressing cylinder (52) mounted on the pressing frame (51), a pressing plate (53) fixedly mounted on the output end of the pressing cylinder (52), and at least two sets of guide bearings mounted on the pressing frame (51); wherein: The end surface of the compression plate (53) corresponding to the nut placement module (45) is provided with compression positions corresponding one to one with the nut placement module (45).

5. The installation method of the brake drum nut automatic installation equipment according to any one of claims 1 to 4, characterized in that: The following steps are involved: S1. Initializing the equipment, i.e., moving the roller installation platform (3) to the initial position corresponding to the lower end of the inclined line transfer mechanism (2); adjusting the reaction force mechanism (5) to the initial position at the upper end of the frame (1); and the nut transmission mechanism (6) to the waiting position on one side of the frame (1); S2. parameter setting, equipment adjustment and selection, that is, adjusting the position of the nut (7) on the nut transmission mechanism (6) according to the position of the nut (7) on the brake drum, and selecting the components of the reaction force mechanism (5) and the nut transmission mechanism (6) according to the position of the nut (7); S3. Loading, gluing and clamping the nut (7), that is, starting the nut transmission mechanism (6) to load, gluing and clamping the nut (7) and transport it to the nut screwing mechanism (4); S4. The nut transmission mechanism (6) moves to the waiting position, that is, after the nut (7) in step S3 is clamped and transported to the nut screwing mechanism (4), the nut transmission mechanism (6) moves to the waiting position; S5. The wheel hub and the nut screwing mechanism (4) are moved to the working position, that is, the roller installation platform (3) is moved to the installation position corresponding to the high end of the inclined line transfer mechanism (2), and the wheel hub is moved to the tightening working position; the nut screwing mechanism (4) is moved to the working position; S6. The nut (7) is pressed against the brake drum, that is, the reaction mechanism (5) is moved, the bolts on the brake drum to be installed and the nut (7) on the nut screwing mechanism (4) are pressed, and the wheel hub is fixed; S7. The nut (7) and the brake drum are screwed and fixedly installed, that is, the nut screwing mechanism (4) is started to screw the nut (7) from the bottom to the top, thereby completing the fixed installation of the nut (7) and the brake drum.

6. The installation method of the brake drum nut automatic installation equipment according to claim 5 is characterized in that: The process of loading, gluing and clamping the nut (7) in step S3 specifically includes: S31. The nut (7) feeding process is to start the feeding device (63) to feed the nut (7) onto the nut feeding turntable assembly (62); S32. The nut (7) gluing process, that is, starting the gluing component (64) to perform a gluing process on the nut (7) on the nut feeding turntable component (62); S33. A process of clamping and transporting the nut (7), that is, moving the clamping jaw conveying assembly (61) to the clamping position, clamping and transporting the glue-coated nut (7) to the nut screwing mechanism (4).

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