Automatic unhooking device and automatic unhooking method of snap ring bolt pin for high-altitude hoisting

Abstract

The invention provides an automatic unhooking device and an automatic unhooking method for a snap ring bolt pin for high-altitude hoisting. The automatic unhooking device comprises a hoop base, a motor, a gear transmission mechanism and an elastic bolt pulling mechanism, wherein the hoop base is detachably installed on the outer wall of the clamping ring, the motor is fixedly installed on the hoop base, and the motor is connected with the gear transmission structure; the gear transmission mechanism is used for converting rotary motion of the motor into linear motion of the clamping ring bolt pin, and the output end of the gear transmission mechanism is coupled with the clamping ring bolt pin through a separable connecting piece; the elastic bolt pulling mechanism is arranged at the tail end of the gear transmission mechanism and is used for providing additional pulling force after the bolt pin thread is pulled out; the danger coefficient of manual high-altitude unhooking is greatly reduced, the labor and mechanical cost is saved, the construction time is shortened, the construction efficiency is improved, and the device is particularly suitable for frequent hoisting operation of large components.

Description

Technical Field

[0001] The present invention belongs to the technical field of high-altitude hoisting equipment, and particularly relates to an automatic hook release device and method for a snap ring bolt used in high-altitude hoisting. Background Art

[0002] In the current high-altitude hoisting work, after the hoisting work is completed, the hook removal work needs to be carried out. However, there are many unsafe factors in the current work process, which not only waste labor and mechanical costs, but also pose a very high risk of high-altitude falling accidents.

[0003] In order to avoid the risk of falling during high-altitude operations, a steel bar without threads is used to replace the bolt of the snap ring for hoisting, and then the hook is removed by the method of workers pulling ropes on the ground. However, this method does not meet the requirements of hoisting specifications. The strength of the steel bar is insufficient to replace the snap ring bolt, and heavy components cannot be hoisted.

[0004] Therefore, it is urgent to design a method that no longer uses manual hook removal after high-altitude hoisting, which is very important for safe production and cost saving. Summary of the Invention

[0005] The present invention provides an automatic hook release device and method for a snap ring bolt used in high-altitude hoisting, which are used to solve the problems of high safety risks, difficult manual or mechanical and manual combined hook removal operations, and high costs in existing high-altitude hoisting technologies.

[0006] In a first aspect, the present invention provides an automatic hook release device for a snap ring bolt used in high-altitude hoisting, comprising: a hoop base, a motor, a gear transmission mechanism, and an elastic bolt pulling mechanism; Among them, the hoop base is detachably installed on the outer wall of the snap ring, the motor is fixedly installed on the hoop base, and the motor is connected to the gear transmission structure; The gear transmission mechanism is used to convert the rotational motion of the motor into a linear motion of the snap ring bolt, and the output end of the gear transmission mechanism is coupled to the snap ring bolt through a separable connector; The elastic bolt pulling mechanism is arranged at the end of the gear transmission mechanism and is used to provide an additional pulling force after the bolt thread is disengaged.

[0007] Compared with the prior art, the beneficial effects of the present invention are as follows: Through the coordinated cooperation of the hoop base, the motor, the gear transmission mechanism, and the elastic bolt pulling mechanism, automatic hook release of the snap ring bolt after high-altitude hoisting is realized, greatly reducing the risk coefficient of manual high-altitude hook removal, saving labor and mechanical costs, shortening the construction time, improving the construction efficiency, and being particularly suitable for frequent hoisting operations of large components.

[0008] Furthermore, the hoop base is made of steel plates and is fixed to the side of the snap ring through buckles and bolts.

[0009] Furthermore, the clamping surface of the hoop base in contact with the snap ring is provided with anti-slip teeth.

[0010] Furthermore, a plurality of adjustment holes are provided on the hoop base, and the aperture of the adjustment holes is adapted to the aperture of the snap fastener.

[0011] Furthermore, the gear transmission mechanism includes a gear set and a gear box that encloses the gear set; The gear set includes a driving gear fixed to the output shaft of the motor and a driven gear meshing with the driving gear. A convex key is provided in the central hole of the driven gear; the motor is also provided with a housing, and the gear box is fixedly connected to the housing of the motor to form a sealed cavity.

[0012] Furthermore, the elastic bolt pulling mechanism includes a bolt pull rod, and a sliding key groove cooperating with the convex key is provided on the bolt pull rod. The bolt pull rod is axially slidable and circumferentially fixed to the driven gear.

[0013] Furthermore, the separable connector is a universal joint.

[0014] Furthermore, the elastic bolt pulling mechanism includes a spring sleeved on the bolt pull rod; one end of the spring abuts against the end face of the gear box, and the other end abuts against the anti-disengagement cap at the end of the bolt pull rod.

[0015] Furthermore, it further includes a power cord arranged along the hoisting cable and a ground power supply box. The power cord is connected to the power interface of the motor, and the ground power supply box is provided with a forward and reverse switch and an overcurrent protector.

[0016] In a second aspect, the present invention provides an automatic unhooking method for a snap ring bolt for high-altitude hoisting, which is carried out by using the automatic unhooking device for a snap ring bolt for high-altitude hoisting according to any one of the first aspect, and includes the following steps: S1. Install the hoop base on the outer wall of the snap ring through the snap fastener, so that the axis of the bolt pull rod is coaxial with the axis of the snap ring bolt, and connect the bolt pull rod to the snap ring bolt through the separable connector; S2. After the hoisting operation is completed, start the motor, and the motor drives the gear transmission mechanism to drive the bolt pull rod to rotate, so that the snap ring bolt is screwed out of the snap ring; S3. When the snap ring bolt is completely removed, the elastic bolt pulling mechanism releases an additional pulling force, and the snap ring bolt is completely pulled out through the bolt pull rod to complete automatic unhooking. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view of the automatic unhooking device in an embodiment of the present invention; Figure 2 It is a schematic diagram of the automatic unhooking device in an embodiment of the present invention; Figure 3 It is a front sectional view of the automatic unhooking device in an embodiment of the present invention; Figure 4 Cross-sectional view of a gear set in an embodiment of the present invention; Figure 5 Cross-sectional view of an automatic decoupling device in an embodiment of the present invention.

[0018] Explanation of reference numerals in the drawings: 1. Hoop base; 2. Motor; 3. Outer shell; 4. Gear set; 41. Driving gear; 42. Driven gear; 5. Gearbox; 6. Spring; 7. Anti-disengagement cap; 8. Pin rod; 9. Snap; 10. Adjustment hole; 11. Lifted object; 12. Snap ring; 13. Snap ring pin; 14. Separable connector; 15. Bolt; 16. Slide keyway; 17. Anti-slip teeth. Detailed implementation manners

[0019] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figures 1 to 5 , in a first aspect, the present invention provides an automatic decoupling device for a snap ring pin used in high-altitude hoisting, including: a hoop base 1, a motor 2, a gear transmission mechanism, and an elastic pin pulling mechanism; Among them, the hoop base 1 is detachably installed on the outer wall of the snap ring 12, the motor 2 is fixedly installed on the hoop base 1, and the motor 2 is connected to the gear transmission structure; The gear transmission mechanism is used to convert the rotational motion of the motor 2 into a linear motion of the snap ring pin 13, and the output end of the gear transmission mechanism is coupled to the snap ring pin 13 through a separable connector 14; The elastic pin pulling mechanism is arranged at the end of the gear transmission mechanism and is used to provide an additional pulling force after the pin thread is disengaged.

[0021] The automatic decoupling device for a snap ring pin used in high-altitude hoisting provided by the present invention realizes the automatic decoupling of the snap ring pin 13 after high-altitude hoisting through the coordinated cooperation of the hoop base 1, the motor 2, the gear transmission mechanism, and the elastic pin pulling mechanism, greatly reducing the risk coefficient of manual high-altitude hook removal, saving labor and mechanical costs, shortening the construction time, improving the construction efficiency, and being particularly suitable for frequent hoisting operations of large components.

[0022] The hoop base 1 is made of steel plate and is fixed to the side of the snap ring 12 through the buckle 9 and the bolt 15; the clamping surface of the hoop base 1 in contact with the snap ring 12 is provided with anti-slip teeth 17; a plurality of adjustment holes 10 are opened on the hoop base 1, and the aperture of the adjustment hole 10 is adapted to the aperture of the buckle 9.

[0023] Through the cooperation of the hoop base 1 and the adjustable buckle 9 structure, the automatic decoupling device can be adapted to snap rings 12 of different specifications, and further improves the transmission accuracy of the device in a vibrating environment.

[0024] The gear transmission mechanism includes a gear set 4 and a gear box 5 that wraps the gear set 4; The gear set 4 includes a driving gear 41 fixed to the output shaft of the motor 2 and a driven gear 42 meshing with the driving gear 41. A convex key is provided in the central hole of the driven gear 42; the motor 2 is also provided with a housing 3, and the gear box 5 is fixedly connected to the housing 3 of the motor 2 to form a sealed cavity. The elastic bolt pulling mechanism includes a bolt pull rod 8, and a sliding key groove 16 that cooperates with the convex key is provided on the bolt pull rod 8. The bolt pull rod 8 can axially slide and is circumferentially fixed with the driven gear 42.

[0025] Through the above structure, the self-locking function of the automatic decoupling device is realized, preventing the accidental rotation of the snap ring bolt 13, and further improving the transmission efficiency; the matching structure of the sliding key groove 16 and the convex key not only ensures the reliability of torque transmission, but also allows the bolt pull rod 8 to axially slide, making the two actions of screwing out the thread and pulling the bolt by the spring 6 seamlessly connected.

[0026] In a specific embodiment, the separable connector 14 is a universal joint. Optionally, one end of the joint is threadedly connected to the bolt pull rod 8, and the other end is provided with a slot for the snap ring bolt 13 with a set screw 15, and a square groove matching the anti-rotation structure at the end of the snap ring bolt 13 is provided on the inner wall of the slot.

[0027] Furthermore, the elastic bolt pulling mechanism includes a spring 6 sleeved on the bolt pull rod 8; one end of the spring 6 abuts against the end face of the gear box 5, and the other end abuts against the anti-disengagement cap 7 at the end of the bolt pull rod 8.

[0028] Specifically, it further includes a power cord arranged along the hoisting sling and a ground power supply box. The power cord is connected to the power interface of the motor 2, and the ground power supply box is provided with a forward and reverse switch and an overcurrent protector.

[0029] In a second aspect, an automatic decoupling method for a snap ring bolt used in high-altitude hoisting is carried out by using the automatic decoupling device for a snap ring bolt used in high-altitude hoisting in the first aspect, and includes the following steps: S1. Install the hoop base 1 on the outer wall of the snap ring 12 through the buckle 9, keep the axis of the bolt pull rod 8 coaxial with the axis of the snap ring bolt 13, and connect the bolt pull rod 8 and the snap ring bolt 13 through the separable connector 14; S2. After the hoisting operation is completed, start the motor 2. The motor 2 drives the gear transmission mechanism to drive the pin bolt pull rod 8 to rotate, so that the snap ring bolt 13 is screwed out of the snap ring 12; S3. When the snap ring bolt 13 is completely disengaged, the elastic bolt mechanism releases an additional pulling force, and the snap ring bolt 13 is completely pulled out through the pin bolt pull rod 8 to complete automatic unhooking.

[0030] In use, before the hoisting work starts, after the lifted object 11 is tied up, select the hoop base 1 that matches the outer diameter of the snap ring 12, adjust the position of the buckle 9 through the adjustment hole 10 to make the hoop fit closely to the outer wall of the snap ring 12, and fasten it with the bolt 15. Fix the motor 2 on the hoop base 1, install a set of gear sets 4 at the head of the motor 2, and the gear sets 4 are connected to the pin bolt pull rod 8 below; insert the pin bolt pull rod 8 into the central hole of the driven gear 42, and make the sliding key groove 16 of the pin bolt pull rod 8 fit with the central hole convex key of the driven gear 42 to ensure that the pin bolt pull rod 8 can slide axially with the driven gear 42 but does not rotate relative to it. Connect the pin bolt pull rod 8 and the snap ring bolt 13 through a universal joint and fix them with a set screw 15. Lay the waterproof power cord along the hoisting sling, connect it to the ground power box, check the forward and reverse rotation functions of the motor 2, and start the hoisting work.

[0031] After the hoisting work is completed and the crane releases the hook, power on the motor 2 of the automatic unhooking device at the ground power box; the motor 2 starts to rotate, drives the gear sets 4 to rotate, the gear sets 4 drive the pin bolt pull rod 8 to rotate, the pin bolt pull rod 8 drives the snap ring bolt 13 to rotate. After the snap ring bolt 13 is screwed out of the threaded head of the snap ring 12, the spring 6 drives the pin bolt pull rod 8 to pull out the snap ring bolt 13; after the crane is completely unhooked, remove the hoisting sling and the snap ring 12 to complete automatic unhooking.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; if these modifications and variations fall within the scope of the claims of the present invention and its equivalent technologies, they should all be considered as the protection scope of the present invention.

Claims

1. An automatic hook - releasing device for a snap - ring bolt used in high - altitude hoisting, characterized in that, Comprising: A hoop base, a motor, a gear transmission mechanism, and an elastic bolt pulling mechanism; Wherein, the hoop base is detachably installed on the outer wall of the snap ring, the motor is fixedly installed on the hoop base, and the motor is connected to the gear transmission structure; The gear transmission mechanism is used to convert the rotational motion of the motor into the linear motion of the snap ring bolt, and the output end of the gear transmission mechanism is coupled to the snap ring bolt through a separable connector; The elastic bolt pulling mechanism is arranged at the end of the gear transmission mechanism and is used to provide an additional pulling force after the bolt thread comes out.

2. The automatic hook release device for the sling bolt used in high-altitude hoisting according to claim 1, characterized in that, The hoop base is made of steel plate and is fixed on the side of the snap ring through a buckle and bolts.

3. The automatic hook release device for the sling bolt used in high-altitude hoisting according to claim 2, characterized in that, The clamping surface of the hoop base in contact with the snap ring is provided with anti-slip teeth.

4. The automatic hook release device for the sling bolt used in high-altitude hoisting according to claim 3, characterized in that, A plurality of adjustment holes are provided on the hoop base, and the aperture of the adjustment holes is adapted to the aperture of the buckle.

5. The automatic hook release device for the sling shackle bolt used in high-altitude hoisting according to any one of claims 1-4, characterized in that, The gear transmission mechanism includes a gear set and a gear box that wraps the gear set; The gear set includes a driving gear fixed to the output shaft of the motor and a driven gear meshing with the driving gear. A convex key is provided in the central hole of the driven gear; The motor is also provided with a housing, and the gear box is fixedly connected to the housing of the motor to form a sealed cavity.

6. The automatic hook release device for the shackle bolt used in high-altitude hoisting according to claim 5, characterized in that, The elastic bolt pulling mechanism includes a bolt pull rod, and a sliding key groove cooperating with the convex key is provided on the bolt pull rod. The bolt pull rod is axially slidable and circumferentially fixed with the driven gear.

7. The automatic hook release device for the sling bolt used in high-altitude hoisting according to claim 5, characterized in that, The separable connector is a universal joint.

8. The automatic hook release device for the sling bolt used in high-altitude hoisting according to claim 5, characterized in that, The elastic bolt pulling mechanism includes a spring sleeved on the bolt pull rod; One end of the spring abuts against the end face of the gear box, and the other end abuts against the anti-disengagement cap at the end of the bolt pull rod.

9. The automatic hook release device for the sling bolt used in high-altitude hoisting according to claim 1, characterized in that, It also includes a power cord arranged along the hoisting rope and a ground power supply box. The power cord is connected to the power interface of the motor, and the ground power supply box is provided with a forward and reverse switch and an overcurrent protector.

10. An automatic hook - releasing method for a snap - ring bolt used in high - altitude hoisting, characterized in that, Using the automatic hook release device for the snap ring bolt for high-altitude hoisting described in any one of claims 1-9, including the following steps: S1. Install the hoop base on the outer wall of the snap ring through a buckle, make the axis of the bolt pull rod coincide with the axis of the snap ring bolt, and connect the bolt pull rod to the snap ring bolt through a separable connector; S2. After the hoisting operation is completed, start the motor. The motor drives the gear transmission mechanism to drive the bolt pull rod to rotate, so that the snap ring bolt rotates out of the snap ring; S3. When the snap ring bolt is completely removed, the elastic bolt pulling mechanism releases the additional pulling force, and the snap ring bolt is completely pulled out through the bolt pull rod to complete automatic hook release.

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