Secondary tightening device for tire bolt

Abstract

The invention discloses a bolt tightening device in the field of automobile tire assembly, and aims to solve the problems of high labor intensity, low working efficiency and safety risk in the prior art. The gravity of a tightening gun is supported through a mutual structure of a first rotating arm, a stand column and a main body base, and the carrying strength of workers is reduced; the counter weight is used for balancing the torque of the tightening gun on the stand column and preventing the whole secondary tightening device for the tire bolt from overturning; a first rotating arm, a bearing and a spring balancer are matched with one another, so that the tightening gun is freely dragged, the weight of the tightening gun is supported when a worker loosens the hand, and the tightening gun is at a proper height; the speed control of the speed difference automatic controller prevents the tightening gun from accidentally injuring workers; therefore, according to the secondary tightening device for the tire bolt, the labor intensity of workers is reduced, the working efficiency is improved, and the safety of the workers is guaranteed.

Description

Technical Field

[0001] The invention relates to a secondary tightening device for a tire bolt and belongs to the field of automobile tire assembly in a test run phase. Background Art

[0002] During the assembly process of wide-body mining vehicles, after the tire mounting bolts are installed and torqued using a tightening machine on the production line, the vehicle needs to undergo a driving test on a road test track to eliminate the impact of the initial installation of the tires and axles, and between the tires. At this time, a slight gap will appear on the mounting mating surface between the tires and the vehicle body, and the original predetermined torque value will be attenuated, so the tire mounting bolts need to be subjected to a secondary torque tightening and torque setting treatment.

[0003] Unlike the tightening machine that can be used to install fixed torque on the production line, the secondary tightening of the tire mounting bolts is handled on-site at the test track. There is a lack of support from the rich equipment on the production line and it needs to be operated manually using a torque wrench. The tightening gun weighs at least tens of kilograms, so the labor intensity is high and the efficiency is low. There is also a risk of being hit by the tightening gun. Summary of the invention

[0004] The purpose of the present application is to overcome the deficiencies in the prior art and to provide a secondary tightening device for tire bolts that reduces the labor intensity of tire mounting bolts, improves mounting efficiency and mounting safety.

[0005] In order to achieve the above objectives, this application is implemented by adopting the following technical solutions: The present application provides a secondary tightening device for a tire bolt, comprising: A main body base and a column fixedly connected to the main body base, wherein the main body base is used to support the column on the ground, and the column is rotatably connected to the first rotating arm through a bearing; One end of the first rotating arm is provided with a counterweight, and the other end is connected to a spring balancer and a speed difference automatic controller; the secondary tightening device of the tire bolt also includes a tightening gun, and the hooks of the spring balancer and the speed difference automatic controller are respectively connected to the hanging head of the tightening gun; A power source electrically connected to the tightening gun is also arranged in the main body base.

[0006] In some embodiments of the secondary tightening device for tire bolts provided in the present application, an adapter flange is also included; The flange plates of the adapter flange are respectively arranged on the column and the inner ring of the bearing, the inner ring of the bearing and the column are fixedly connected through the adapter flange, and the first rotating arm is connected to the outer ring of the bearing; Alternatively, the flange plates of the adapter flange are respectively arranged on the column and the outer ring of the bearing, the outer ring of the bearing and the column are fixedly connected via the adapter flange, and the first rotating arm is connected to the inner ring of the bearing.

[0007] In some embodiments of the secondary tightening device for tire bolts provided in the present application, a limit block is further provided on the flange surface of the adapter flange, and the height of the limit block relative to the flange surface is greater than the distance between the first rotating arm and the flange surface.

[0008] In some embodiments of the secondary tightening device for tire bolts provided in the present application, one end of the first rotating arm facing away from the counterweight is rotatably connected to the second rotating arm, and its rotation axis is parallel to the rotation axis of the bearing; one end of the second rotating arm facing away from the first rotating arm is connected to the spring balancer and the speed difference controller.

[0009] In some embodiments of the secondary tightening device for tire bolts provided in the present application, a plurality of hinged plates corresponding to each other are fixedly arranged at the position of the first rotating arm corresponding to the position of the second rotating arm, and the hinged plate is rotatably connected to the second rotating arm via a pin; the first rotating arm and the hinged plate are fixedly connected, and are also fixedly connected via a force transmission plate.

[0010] In some embodiments of the secondary tightening device for tire bolts provided in the present application, a controller is further included, the controller includes an interactive display screen, the controller is equipped with a communication interface for connecting to the electrical signal of the tightening gun, and the controller is used to store and output tightening gun control commands corresponding to tightening torques of different tire bolts.

[0011] In some embodiments of the secondary tightening device for tire bolts provided in the present application, the main body base is a box structure, the interior of the box of the main body base is used to store a power supply, the power supply has a power supply interface compatible with the tightening gun, and the bottom of the main body base is provided with a tray structure connected to the fork tines of a forklift.

[0012] In some embodiments of the secondary tightening device for tire bolts provided in the present application, a plurality of legs are provided at the bottom of the main body base, and the legs are distributed in a direction away from the tray structure.

[0013] In some embodiments of the secondary tightening device for tire bolts provided in the present application, a plurality of battery chutes separated by partition plates are provided inside the box of the main base.

[0014] In some embodiments of the secondary tightening device for tire bolts provided in the present application, the power supply is a UPS power supply, and the power supply has an interface connected to the forklift power supply.

[0015] Compared with the prior art, the present invention has the following beneficial effects: In the secondary tightening device for tire bolts provided by the present application, the gravity of the tightening gun is supported by the mutual structure of the first rotating arm, the column and the main base, thereby reducing the carrying intensity of the workers; the counterweight is used to balance the torque of the tightening gun at the column to prevent the secondary tightening device for tire bolts from overturning as a whole; the mutual cooperation of the first rotating arm, the bearing and the spring balancer ensures that the tightening gun can be dragged freely while supporting the weight of the tightening gun when the worker lets go, ensuring that the tightening gun is at a suitable height; the speed control of the speed differential automatic controller prevents the tightening gun from accidentally hitting the worker; therefore, the secondary tightening device for tire bolts provided in this embodiment reduces the labor intensity of the workers, thereby improving the work efficiency and ensuring the safety of the workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present application or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 is a schematic structural diagram of a secondary tightening device for a tire bolt provided in this embodiment; Figure 2 yes Figure 1 A front view of Figure 3 It is a structural schematic diagram of a tightening gun in a bolt tightening device provided in this embodiment tightening a tire bolt; Figure 4 yes Figure 1 A top view of In the figure: 1. forklift; 2. main base; 3. controller; 4. column; 5. adapter flange; 6. first rotating arm; 7. bearing; 8. counterweight; 9. limit block; 10. second rotating arm; 11. spring balancer; 11.1. first hook; 12. speed difference automatic controller; 12.1. second hook; 13. tightening gun; 13.1. hanging head; 14. power supply; 15. hinged plate; 16. outrigger; 17. tire bolt; 18. tire; 19. pallet structure; 20. battery slide; 21. pin; 22. force transmission plate. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of this application / this application to clearly and completely describe the technical solutions in the embodiments of this application / this application. Obviously, the described embodiments are only part of the embodiments of this application / this application, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the application / this application and its application or use. Embodiment 1

[0019] This embodiment provides a secondary tightening device for a tire bolt to solve the problem in the prior art that the tire bolt 17 is labor-intensive and inefficient to be tightened again and is easily damaged by the tightening gun 13 .

[0020] refer to Figures 1 to 4 The secondary tightening device for tire bolts provided in this embodiment includes a main body base 2 and a column 4 fixedly connected to the main body base 2. The main body base 2 is used to support the column 4 on the ground. The column 4 is rotatably connected to the first rotating arm 6 through a bearing 7. The load on the first rotating arm 6 is transmitted to the main body base 2 through the column 4, and then transmitted to the support or the ground by the main body base 2.

[0021] One end of the first rotating arm 6 is provided with a counterweight 8, which is used to balance the torque at the column 4, and the other end is connected to the spring balancer 11 and the speed difference controller 12; the secondary tightening device of the tire bolt also includes a tightening gun 13, and the hooks of the spring balancer 11 and the speed difference controller 12 are respectively connected to the hanging head 13.1 of the tightening gun 13.

[0022] A power source 14 electrically connected to the tightening gun 13 is also provided in the main body base 2 .

[0023] Non-exclusive use: refer to Figure 3 , place the secondary tightening device of the tire bolt near the tire 18, and support the main base 2 on the ground or a support; Move the first rotating arm 6 so that the spring balancer 11 and the speed difference automatic controller 12 are roughly toward the direction of the tire bolt 17; refer to Figure 2 , use a rope or direct hanging to hang the hanging head 13.1 of the tightening gun 13 of appropriate specifications on the first hook 11.1 of the spring balancer 11 and the second hook 12.1 of the speed difference automatic controller 12 respectively; Determine the height range of most tire bolts 17 according to the height of the tire 18 axle, and adjust the height limit of the tightening gun 13 by the spring balancer 11; The worker picks up the tightening gun 13 to perform secondary tightening on the tire bolt 17. During this period, the worker may drag the tightening gun 13 to put the spring balancer 11 in a compressed / stretched state, and the first rotating arm 6 will also rotate relative to the column 4 to adapt to the worker's posture changes; After the tire bolt 17 is tightened, the worker releases the tightening gun 13, and the first hook 11.1 is only subjected to the gravity of the tightening gun 13. At this time, the spring balancer 11 begins to restore elastic balance, driving the tightening gun 13 to restore the set height; When a worker accidentally loosens the tightening gun 13, or the main base 2 is accidentally moved away by a support, the speed difference automatic controller 12 will control the moving away speed or descending speed of the tightening gun 13, so that the speed at which the tightening gun 13 is dragged becomes smooth, thereby preventing the worker from being injured.

[0024] In summary, it is not difficult for those skilled in the art to see that in the secondary tightening device for tire bolts provided by the present embodiment, the gravity of the tightening gun 13 is supported by the mutual structure of the first rotating arm 6, the column 4 and the main base 2, thereby reducing the carrying intensity of the workers; a counterweight 8 is provided for balancing the torque of the tightening gun 13 at the column 4, thereby preventing the secondary tightening device for tire bolts from tipping over as a whole; the mutual cooperation of the first rotating arm 6, the bearing 7 and the spring balancer 11 ensures that the tightening gun 13 can be dragged freely while supporting the weight of the tightening gun 13 when the worker lets go, thereby ensuring that the tightening gun 13 is at a suitable height; the speed control of the speed differential automatic controller 12 prevents the tightening gun 13 from accidentally hitting the worker; therefore, the secondary tightening device for tire bolts provided by the present embodiment reduces the labor intensity of the workers, thereby improving the work efficiency, and also ensuring the safety of the workers.

[0025] The main base 2 can be implemented in other forms known in the art, such as a plate box that can be supported on the road surface, or a connector for installation on other machines, or even more other known forms, which will not be repeated here.

[0026] The spring balancer 11 can be of the model EW-80, which is a self-locking tower suspension tension balance crane 70-80kg, with a built-in line length of 1.5m. The speed difference automatic controller 12 can be of the model ZJ-1.6, with a total stroke of 1.6m and a maximum safety belt weight of 150kg. The built-in line of the spring balancer 11 and the safety belt of the speed difference automatic controller 12 are respectively connected to the hanging head 13.1 of the tightening gun 13. Embodiment 2

[0027] This embodiment provides a secondary tightening device for tire bolts. This embodiment is optimized on the basis of the first embodiment to improve the technical effect and refine the technical solution. For details not fully described in this embodiment, please refer to the first embodiment.

[0028] refer to Figure 1 and Figure 2As one embodiment, the secondary tightening device of the tire bolt further includes an adapter flange 5, which is composed of two mutually connected flanges. One solution is: one flange is connected to the column 4, and the other flange is connected to the inner ring of the bearing 7. The column 4 is fixedly connected to the inner ring of the bearing 7 through the flange connection, and the first rotating arm 6 is connected to the outer ring of the bearing 7, so that the first rotating arm 6 is rotatably connected to the column 4 through the bearing 7; another solution is the opposite, one flange is connected to the column 4, and the other flange is connected to the outer ring of the bearing 7. The column 4 is fixedly connected to the outer ring of the bearing 7 through the flange connection, and the first rotating arm 6 is connected to the inner ring of the bearing 7, so that the first rotating arm 6 is rotatably connected to the column 4 through the bearing 7. It is not difficult for those skilled in the art to see that the bearing 7 is connected to the column 4 through the adapter flange 5, and the flange area of ​​the adapter flange 5 is large, which is convenient for the transmission of the load at both ends of the first rotating arm 6, and is more conducive to bearing the eccentric load caused by the partial imbalance of the load at both ends of the first rotating arm 6.

[0029] The secondary tightening device for the tire bolt provided in this embodiment can be installed on other walkable devices for use. In order to prevent the first rotating arm 6 from rotating excessively and touching other walkable devices, refer to Figure 1 and Figure 4 The flange surface of the adapter flange 5 is also provided with a stopper 9, the height of the stopper 9 relative to the flange surface is greater than the distance between the first rotating arm 6 and the flange surface, and the stopper 9 is used to prevent excessive rotation of the first rotating arm 6. As one embodiment, a suitable rotation range can be set for the first rotating arm 6 by using a plurality of stoppers 9.

[0030] The rotation of the first rotating arm 6 will cause the counterweight 8 to rotate together. In some embodiments, the counterweight 8 is at a long distance from the column 4. When the worker drags the tightening gun 13, the rotation of the first rotating arm 6 makes it easy for the counterweight 8 to touch other equipment and personnel. As one embodiment, refer to Figure 1 and Figure 2 The end of the first rotating arm 6 away from the counterweight 8 is rotatably connected to the second rotating arm 10, and its rotation axis is parallel to the rotation axis of the bearing 7 to ensure that the rotation axis between the second rotating arm 10 and the first rotating arm 6 will not rotate when subjected to the gravity torque of the tightening gun 13; the end of the second rotating arm 10 away from the first rotating arm 6 is connected to the spring balancer 11 and the speed difference automatic controller 12. When in use, when the staff drags the tightening gun 13, the second rotating arm 10 mainly follows, and the first rotating arm 6 follows with a small amplitude or does not follow.

[0031] In order to prevent the rotation axis between the second rotating arm 10 and the first rotating arm 6 from being twisted off when the gravity torque of the tightening gun 13 is applied, as one embodiment, reference Figure 1 and Figure 2, a plurality of hinged plates 15 corresponding to each other are fixedly arranged at the position of the first rotating arm 6 near the second rotating arm 10, and the hinged plates 15 are rotatably connected with the second rotating arm 10 through the pin 21; the first rotating arm 6 is fixedly connected with the hinged plates 15, and is also fixedly connected with the force transmission plate 22. That is, the force between the second rotating arm 10 and the first rotating arm 6 is not only directly transmitted through the hinged plates 15, but also assisted by the hinged plates 15 and the force transmission plate 22, and the force transmission plate 22 bears the tension between the hinged plates 15 and the first rotating arm 6 on the side away from the ground, and bears the pressure between the hinged plates 15 and the first rotating arm 6 on the side close to the ground, so as to resist the gravity torque of the tightening gun 13 and prevent the pin 21 from bearing the eccentric torque.

[0032] As one example, refer to Figure 1 and Figure 2 The main body base 2 is a box structure, which has a large support area with the ground or a support object. At the same time, the box of the main body base 2 is used to store the power supply 14, and the power supply 14 has a power supply interface adapted to the tightening gun 13. The bottom of the main body base 2 is provided with a tray structure 19 connected to the fork of the forklift 1. Figures 1 to 4 When in use, the fork tines of the forklift 1 are inserted into the pallet structure 19, and the secondary tightening device of the tire bolt can be transported as a whole.

[0033] As one example, refer to Figure 1 , Figure 2 and Figure 4 , a plurality of legs 16 are provided at the bottom of the main body base 2, and the legs 16 are distributed in a direction away from the pallet structure 19. As one embodiment, four legs 16 are provided at the bottom of the main body base 2, and the legs 16 are distributed in a direction away from the pallet structure 19. After the forklift 1 transports the secondary tightening device of the tire bolt to the designated position, the fork tines are separated from the pallet structure 19, and the secondary tightening device of the tire bolt is supported on the ground by the legs 16.

[0034] As one embodiment, a plurality of battery slots 20 separated by partitions are provided inside the box of the main base 2 to support the installation of multiple power supplies 14 .

[0035] As one embodiment, the power supply 14 is a UPS uninterruptible power supply. The power supply 14 has an interface connected to the forklift 1 for power supply. The power supply 14 obtains power from the forklift 1 and outputs it to the tightening gun 13 after conversion.

[0036] As one example, refer to Figure 1 The secondary tightening device for the tire bolt also includes a controller 3, which includes an interactive display screen. The controller 3 is equipped with a communication interface for connecting the electrical signal with the tightening gun 13, and the controller 3 is used to store and output tightening gun control commands corresponding to the tightening torques of different tire bolts 17.

[0037] When in use, the staff selects the appropriate tightening torque on the controller 3 according to the specifications of the tire bolt 17 and the tire 18, and the controller 3 outputs the tightening gun control command to the tightening gun 13 according to the selection, so the tightening gun 13 can select the intelligent tightening gun As one embodiment, the controller 3 can set the program, torque and angle with torque control, torque control / angle monitoring, angle control, angle control / torque monitoring, current monitoring, time monitoring, multi-step tightening and other functions, and can store all parameters in the tightening process. The controller 3 itself can store no less than 5000 sets of tightening data; As one embodiment, the controller 3 adopts CVI3 VISION controller (Detou standard). As one embodiment, the controller 3 is connected to the background signal through an industrial network for uploading and archiving the operation data.

[0038] The secondary tightening device for tire bolts provided in this embodiment can realize flexible operation in multiple areas offline, greatly improving the assembly efficiency of re-tightening vehicle tires after trial runs and tests. The original manual re-tightening using a torque wrench is changed to re-tightening using an electric tightening tool. While tightening, the assembly data is uploaded in real time, which improves the degree of automation and control accuracy and reduces the labor intensity of employees.

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "provided at", "provided with", "located", "installed", "set", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or it can be internal communication between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. "Hinged" includes "rotational connection".

[0041] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A secondary tightening device for tire bolts, It is characterized in that include, A main body base (2) and a column (4) fixedly connected to the main body base (2), wherein the main body base (2) is used to support the column (4) on the ground, and the column (4) is rotatably connected to the first rotating arm (6) via a bearing (7); One end of the first rotating arm (6) is provided with a counterweight (8), and the other end is connected to a spring balancer (11) and a speed difference automatic controller (12); the secondary tightening device for the tire bolt also includes a tightening gun (13), and the hooks of the spring balancer (11) and the speed difference automatic controller (12) are respectively connected to a hanging head (13.1) of the tightening gun (13); A power source (14) electrically connected to the tightening gun (13) is also provided in the main body base (2).

2. The secondary tightening device for tire bolts according to claim 1, It is characterized in that Also includes an adapter flange (5); The flange plates of the adapter flange (5) are respectively arranged on the column (4) and the inner ring of the bearing (7); the inner ring of the bearing (7) and the column (4) are fixedly connected via the adapter flange (5); and the first rotating arm (6) is connected to the outer ring of the bearing (7); Alternatively, the flange plates of the adapter flange (5) are respectively arranged on the column (4) and the outer ring of the bearing (7), the outer ring of the bearing (7) and the column (4) are fixedly connected via the adapter flange (5), and the first rotating arm (6) is connected to the inner ring of the bearing (7).

3. The secondary tightening device for tire bolts according to claim 2, It is characterized in that A stop block (9) is also provided on the flange surface of the adapter flange (5), and the height of the stop block (9) relative to the flange surface is greater than the distance between the first rotating arm (6) and the flange surface.

4. The secondary tightening device for tire bolts according to claim 1, It is characterized in that One end of the first rotating arm (6) facing away from the counterweight (8) is rotatably connected to the second rotating arm (10), and its rotation axis is parallel to the rotation axis of the bearing (7); one end of the second rotating arm (10) facing away from the first rotating arm (6) is connected to the spring balancer (11) and the speed difference automatic controller (12).

5. The secondary tightening device for tire bolts according to claim 4, It is characterized in that A plurality of hinged plates (15) corresponding to each other are fixedly arranged at positions of the first rotating arm (6) corresponding to the positions of the second rotating arm (10); the hinged plates (15) and the second rotating arm (10) are rotatably connected via a pin shaft (21); the first rotating arm (6) and the hinged plates (15) are fixedly connected and are also fixedly connected via a force transmission plate (22).

6. The secondary tightening device for tire bolts according to claim 1, It is characterized in that The device also comprises a controller (3), the controller (3) comprising an interactive display screen, the controller (3) being equipped with a communication interface for connecting to the tightening gun (13) via electrical signals, the controller (3) being used to store and output tightening gun control commands corresponding to tightening torques of different tire bolts (17).

7. The secondary tightening device for tire bolts according to claim 1, It is characterized in that The main body base (2) is a box structure, the interior of the box of the main body base (2) is used to store a power supply (14), the power supply (14) has a power supply interface adapted to the tightening gun (13), and the bottom of the main body base (2) is provided with a tray structure (19) connected to the fork tines of the forklift (1).

8. The secondary tightening device for tire bolts according to claim 7, It is characterized in that A plurality of legs (16) are provided at the bottom of the main body base (2), and the legs (16) are distributed in a direction away from the tray structure (19).

9. The secondary tightening device for tire bolts according to claim 7, It is characterized in that A plurality of battery slide grooves (20) separated by partition plates are provided inside the box of the main body base (2).

10. The secondary tightening device for tire bolts according to claim 7, It is characterized in that The power supply (14) is a UPS power supply, and the power supply (14) is provided with an interface for connecting to the forklift (1) for power supply.

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