Automatic fastening device

Abstract

The invention relates to the field of bolt fastening, in particular to an automatic fastening device, and solves the problem of automatic bolt fastening. Through rotation power applied to the main shaft by the motor, the main shaft is made to rotate and axially move through the shaft thread arranged on the main shaft and the advancing threaded pipe arranged on the bearing seat, the fastening bolt arranged at the other end of the main shaft is pushed to be screwed into the fastening nut on the fastened piece, and the fastened piece is locked tightly. Automatic assembly of folding containers, flying wing containers, important storehouse doors, bridge butt joint and the like is achieved, large-scale folding bridges and high-altitude hoisting operation places where manual work is difficult to reach are achieved, and hoisting and fastening are achieved through remote control, switch control and automatic trigger induction. The wings of the flying wing container vehicle are automatically fastened after being folded, manual binding is not needed, the short-distance transportation efficiency is greatly improved, and long-distance transportation safety and theft prevention are guaranteed.

Description

Technical Field

[0001] The invention relates to the field of bolt fastening, and in particular to an automatic fastening device. Background Art

[0002] As labor costs rise, special scene operations require speed, efficiency and safety, and restrictions are placed on the assembly of various equipment and the loading and unloading time of goods. In addition, large equipment or beams are docked and fastened, and high-altitude complex space operations are not only difficult but also dangerous. Summary of the invention

[0003] In view of the deficiencies of the existing technology, the present invention provides an automatic fastening device.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an automatic fastening device, including a power part consisting of a motor, a worm gear, a worm, and a main shaft; a fastening part consisting of an axis thread, a traveling thread tube, a fastening bolt, a fastening nut or a fastening bolt tube; an installation adjustment part consisting of an adjusting screw, an adjusting nut, and a set nut; and a control part consisting of a trigger disk, a travel switch 1, a travel switch 2, a controller, a travel trigger switch or an induction switch, a remote control switch, and an induction signal transmitter.

[0005] The fastening part is provided with a welding nut replacing the traveling thread tube at one end of the worm gear.

[0006] The fastening part is provided with a spring replacing the traveling thread tube at one end of the worm gear.

[0007] The control part includes a fastening circuit and a loosening circuit.

[0008] The fastening circuit includes a trigger travel switch SQ1 or a radio induction radar switch GY, a manual switch K1, a remote control switch RS1, a thyristor YT1, resistors R1 and R2, a relay J1, and a travel switch SQ2.

[0009] The release circuit includes a manual switch K2, a remote control switch RS2, resistors R3 and R4, a thyristor YT2, a travel switch SQ3, and a relay J2.

[0010] It also includes an upper bearing seat and a lower bearing seat. The advancing threaded tube is arranged on the bearing seat on the worm gear. One end of the main shaft is provided with an axial thread. The upper bearing seat and the lower bearing seat are respectively provided with an upper bearing and a lower bearing for both rotating support of the main shaft and axial positioning of the worm gear. The main shaft is provided with a keyway, and a fastening bolt key and a worm gear key are respectively arranged in the keyway. The main shaft performs radial rotation or axial sliding. The automatic fastening device is provided with a fault handling motor bolt head and a worm bolt head.

[0011] A fault inspection nut is provided at one end of the fastening bolt, and the center hole of the fastening bolt is connected to the main shaft. An anti-dropping bolt is provided on the fault inspection nut, a keyway is provided in the center hole of the fastening bolt, and a guide cone is provided at one end of the fastening bolt adjacent to the fastening nut or the fastening bolt tube.

[0012] At least one end of the adjusting screw is connected to the worm gear housing, and the other end of the adjusting screw is fixed to the bearing seat. The adjusting screw is provided with an adjusting nut and a fixing nut.

[0013] The control circuit power required for the tightening circuit and the power pre-controller power required for the movement of the fastened part are provided by the normally closed contact J2-3 after the relay J2 loses power. The control circuit power required for the loosening circuit and the power pre-controller power required for the loosening of the fastened part are provided by the normally closed contact J1-3 after the relay J1 loses power.

[0014] Beneficial effects of the present invention: The automatic fastening device provided by the present invention can shorten the assembly time of folding parts by 70% through automatic fastening, and the efficiency of logistics ports is greatly improved; large-scale folding bridges and high-altitude lifting work sites that are difficult to reach manually can be lifted and fastened through remote control, switch control, and automatic trigger sensing; the flying wing container truck automatically fastens after the wings are spread and folded, without the need for manual strapping, which greatly improves the efficiency of short-distance transportation and ensures the safety and anti-theft of long-distance transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Overall diagram of the automatic fastening device;

[0016] Figure 2 The effect picture after the fastener is automatically tightened;

[0017] Figure 3 AA section view;

[0018] Figure 4 BB section view;

[0019] Figure 5 Structural diagram of the fastening device using nut welding instead of threaded pipe;

[0020] Figure 6 A diagram of a fastening device mainly consisting of a worm gear, a fastening bolt and a return spring;

[0021] Figure 7 Controller circuit schematic. DETAILED DESCRIPTION

[0022] Example 1: Figure 1-Figure 4 as well as Figure 7As shown, the tightening operation is performed through the controller 26 remote control switch RS1 or manual switch K1 (each with an "off" button), or the travel trigger switch SQ1, or the radio radar induction receiving switch GY27.1, which receives the signal emitted by the induction signal transmitter 27.2 that the fastener 1 has approached and is turned on, or the remote control switch RS1 transmits the signal to the thyristor YT1, and the positive power output by the normally closed contact J2-3 of the relay J2 is transmitted to the relay J1, so that the relay J1 is energized and attracted, and then the motor 24 is started, and the worm 13 and the worm wheel 14 connected to the motor drive the main shaft 6 to rotate, and the shaft thread 18 is screwed into the travel thread tube 17, pushing the fastening bolt 5 downward to screw into the fastening nut 4.1 or the fastening bolt tube 4.2. When the fastening bolt 5 moves to the set position together with the main shaft 6, the trigger plate 20 rotates and presses the travel switch SQ223, the relay J1 loses power, the motor stops working, and the fastening is completed; during the operation, the main shaft 6 is supported by the lower bearing 15 and the upper bearing 16, and the upper and lower bearings simultaneously limit and position the worm wheel 14 to ensure that the worm wheel 14 remains stable when the main shaft 6 moves axially. The worm wheel 14 and worm 13 can use a single worm wheel 14 and worm 13 with different speed ratios or a multi-gear large speed ratio worm wheel 14 and worm 13 as needed;

[0023] After the loosening operation is tightened, the normally closed contact of the travel switch SQ223 is in the open circuit state, the travel switch SQ322, the relay J1 is in the normally closed state, and the loosening circuit part is energized. The thyristor is triggered to conduct by remote control RS2, or the manual switch K2 is pressed to supply reverse polarity power to the motor 24 (the controller remote control is provided with an "on" button), the motor 24 reverses, the spindle 6 and the fastening bolt 5 rotate in the opposite direction, and under the coordinated action of the traveling thread tube 17 and the shaft thread 18, the spindle 6 drives the fastening bolt 5 to move upward until it is completely withdrawn from the fastening nut 4.1 or the fastening bolt tube 4.2. At this time, the trigger disk 20 spins the travel switch SQ322, the relay J2 loses power, the motor stops working again, the loosening operation is completed, and the travel switch SQ223 returns to the normally closed conduction state, and the cycle repeats.

[0024] In order to avoid external interference and reduce false operation, resistors R1 and R3 are installed between the gate and drain of thyristors YT1 and YT2 to clamp them; in order to prevent the automatic fastening device from being not loosened or fastened, and the power equipment that pushes the fastener to move from being opened or closed by mistake, causing damage to the equipment, the control signal sources of the power equipment power controller such as relays and transistor control electrodes are provided by the normally closed contacts of relays J1 and J2 respectively.

[0025] Faults and maintenance: When the fastening bolt 5 of the automatic fastening device cannot be withdrawn from the fastening nut 4.1 due to a fault, a small-sized automatic fastening device is provided with a motor bolt head 25 on the motor 24 shaft, and a medium-sized and large-sized automatic fastening device is provided with a worm bolt head 28. By twisting the motor bolt head 25 or the worm bolt head 28, the fastening bolt 5 can be withdrawn from the fastening nut 4.1 or the fastening bolt tube 4.2. If the fault is difficult to eliminate, dismantle the device, and then directly twist the hexagonal nut head on the upper end of the fastening bolt 5 with a wrench as shown in FIG. Figure 4 Release as shown.

[0026] Installation and adjustment: During the initial installation, move the fastening bolt 5 so that the cone below it abuts against the fastening nut 4.1, turn the adjustment nut 10, and tighten the fixing nut 11. The initial positioning installation is completed. The anti-slip bolt 8 prevents the fastening bolt 5 and its key 7.1 from slipping off, and there are also worm gear keys 7.2, carrier plates 21, and worm pins 29.

[0027] Embodiment 2: Different from embodiment 1, as Figure 5 As shown in the figure, as a practical solution, by welding a nut 30 on the upper bearing seat 12.1, the main shaft 6 can move axially and be tightened. release Operation.

[0028] Embodiment 3: Different from Embodiment 1 and Embodiment 2, as Figure 6 As shown, as a practical automatic tightening device, a spring 31 is arranged at one end of the worm gear, and the spring always pushes the tightening bolt 5 toward the tightening nut 4.1. When the motor drives the worm gear spindle and its tightening bolt 5 to rotate, the tightening bolt 5 is instantly screwed into the tightening nut 4.1, and the tightening and loosening operations are completed under the control of the control system described in Example 1.

[0029] In the description of the present invention, it should be noted that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" indicate directions or positional relationships based on the directions 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. At the same time, the basic principles, main features and advantages of the present invention are shown and described above, which should be understood by technicians in this industry.

Claims

1. An automatic fastening device, characterized in that: The invention comprises a power part consisting of a motor (24), a worm gear (14), a worm (13), and a main shaft (6); a fastening part consisting of a shaft thread (18), a travel thread tube (17), a fastening bolt (5), a fastening nut (4.1) or a fastening bolt tube (4.2); an installation adjustment part consisting of an adjusting screw (9), an adjusting nut (10), and a fixing nut (11); and a control part consisting of a trigger plate (20), a travel switch 1 (22), a travel switch 2 (23), a controller (26), a travel trigger switch or an induction switch (27.1), and an induction signal transmitter (27.2).

2. An automatic fastening device according to claim 1, characterized in that: The fastening portion is provided with a welding nut (30) at one end of the worm gear, which replaces the traveling threaded tube (17).

3. An automatic fastening device according to claim 1, characterized in that: The fastening part is provided with a spring (31) at one end of the worm gear to replace the traveling threaded tube (17).

4. An automatic fastening device as claimed in claim 1, 2 or 3, characterized in that: The control part includes a fastening circuit and a loosening circuit.

5. An automatic fastening device as claimed in claim 4, characterized in that: The fastening circuit includes a trigger travel switch SQ1 or a radio induction radar switch GY, a manual switch K1, a remote control switch RS1, a thyristor YT1, resistors R1 and R2, a relay J1, and a travel switch SQ2.

6. An automatic fastening device as claimed in claim 5, characterized in that: The release circuit includes a manual switch K2, a remote control switch RS2, resistors R3 and R4, a thyristor YT2, a travel switch SQ3, and a relay J2.

7. An automatic fastening device as claimed in claim 1, characterized in that: It also includes an upper bearing seat (12.1) and a lower bearing seat (12.2), the advancing threaded tube (17) being arranged on the upper bearing seat (12.1) of the worm wheel (14) and the worm (13), one end of the main shaft (6) being provided with an axial thread (18), the upper bearing seat (12.1) and the lower bearing seat (12.2) being provided with an upper bearing (15) and a lower bearing (16) serving as both a rotational load for the main shaft (6) and an axial positioning for the worm wheel (14), the main shaft (6) being provided with a long keyway, the long keyway being provided with a fastening bolt key (7.1) and a worm wheel key (7.2), the main shaft (6) being capable of both radial rotational motion and axial sliding, and the automatic fastening device being provided with a fault handling motor bolt head (25) and a worm bolt head (28).

8. An automatic fastening device as claimed in claim 1, characterized in that: A fault repair nut is provided at one end of the fastening bolt (5), and the center hole of the fastening bolt (5) is connected to the main shaft (6). An anti-drop bolt (8) is provided on the fault repair nut. The central axis coincides with the center of the keyway, a keyway is provided in the central hole of the fastening bolt (5), and a guide cone is provided at one end of the fastening bolt (5) adjacent to the fastening nut (4.1) or the fastening bolt tube (4.2).

9. An automatic fastening device as claimed in claim 1, characterized in that: One end of the adjusting screw (9) is connected to the worm gear housing, and the other end of the adjusting screw (9) is fixed to the support seat (2). The adjusting screw (9) is provided with an adjusting nut (10) and a fixing nut (11).

10. An automatic fastening device as claimed in claim 5, characterized in that: The control circuit power required for the tightening circuit and the power pre-controller power required for the movement of the fastened part are provided by the normally closed contact J2-3 after the relay J2 loses power. The control circuit power required for the loosening circuit and the power pre-controller power required for the loosening of the fastened part are provided by the normally closed contact J1-3 after the relay J1 loses power.

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