Adjustable mechanical rotation safety limiting device
By designing an adjustable mechanical slewing safety limit device, the cumulative error and safety issues of slewing bearings in oil drilling and production equipment under harsh environments were solved. This enabled rapid adjustment and automatic control integration of mechanical hard limits, improving safety and performance.
Patent Information
- Application Number
- CN202520350556.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-03
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-03-03
AI Technical Summary
Slewing bearings in oil drilling and production equipment are prone to cumulative errors and poor safety in harsh environments, especially when space is limited and multiple equipment are operating together, leading to mechanical collisions and safety accidents.
An adjustable mechanical rotation safety limit device was designed, including a follow-up adjustable limit part and a fixed adjustable limit part. By connecting the fastening parts, the mechanical hard positioning of the rotation mechanism and the use of elastic anti-collision blocks are realized to reduce mechanical impact.
The safety and applicability of the slewing mechanism have been improved in harsh environments, and the rapid adjustment of mechanical hard limits and automatic control integration have been achieved, reducing the risk of mechanical impact.
Smart Images
Figure CN223923593U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mechanical design and manufacturing, specifically to an adjustable mechanical rotation safety limit device. Background Technology
[0002] A slewing mechanism is a common type of mechanical engineering device where the rotating part rotates around a center line to achieve rotational motion. It consists of a slewing bearing in the middle and connecting parts at both ends, with the desired rotation provided by a slewing drive. Automation tools in oil drilling and production equipment, such as iron drills, automatic hydraulic tongs, drill table robots, and centering robots, typically use slewing bearings directly. The lower end is fixed to a foundation via a base, and the middle part receives position commands from an encoder or directly drives a hydraulic motor or electric motor drive transmission pair to move various tools and equipment fixed on it, cooperating with other mechanisms to achieve operation in different working positions. Because oil drilling and production equipment is used in the open air, the oilfield site is exposed to harsh environments such as various muds and sludge. In addition, the operation of multiple pieces of equipment is characterized by compact structure and limited space. The slewing bearing frequently rotates forward, stops, and reverses during normal operation, which can easily lead to the cumulative error of the encoder that provides the slewing position command increasing or even failure. When operating manually, the sluggishness of the working parts can lead to inaccurate movements, resulting in collisions with other equipment or crushing of personnel and safety accidents. General-purpose automated tools lose their specific limit function after being replaced with other platforms or after maintenance. In particular, the maintenance and adjustment of the slewing structure on the derrick, which is more than ten meters high, is even more difficult. As a result, the positioning safety is poor after the oil drilling and production equipment is disabled during use, there is a large cumulative error due to repeated use, and it is inconvenient to adjust according to the use environment. Utility Model Content
[0003] To address the aforementioned shortcomings, the purpose of this utility model is to provide an adjustable mechanical rotation safety limit device. It has a simple structure and is easy to use. By adjusting the connecting bolts and anti-collision blocks, it ensures the mechanical hard positioning of the rotation mechanism. It is particularly suitable for working conditions with harsh environments, compact spaces, and numerous adjustments where safety is a requirement.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is: an adjustable mechanical rotation safety limit device, comprising a follower adjustable limit part, a rotation mechanism, a fixed adjustable limit part, and fastening parts. The follower adjustable limit part includes a fan-shaped follower connecting plate, an arc-shaped follower perforated baffle, and a follower elastic perforated anti-collision block. The fan-shaped follower connecting plate is connected and fixed to the upper circular rotating part with threaded holes of the rotation mechanism via bolts and spring washers in the fastening parts, and moves forward and backward with the circular rotating part with threaded holes. The upper end of the arc-shaped follower perforated baffle is welded to the outer arc of the fan-shaped follower connecting plate. The follower elastic perforated anti-collision block is connected to the arc-shaped follower perforated baffle via countersunk screws in the fastening parts. The rotation mechanism is a rotation bearing assembly of any unspecified model, with an upper circular rotating part with threaded holes, a lower circular fixed part with threaded holes, and an encoder providing rotational power and positioning in the middle. The fixed adjustable limit part includes a fan-shaped fixed... The system comprises a fixed connecting plate, an arc-shaped fixed perforated baffle, and a fixed elastic perforated anti-collision block. The fan-shaped fixed connecting plate is connected and fixed to the lower circular fixed part with threaded holes of the rotating mechanism through bolts and spring washers in the fastening components. A set of two parts is fixed to two positions. The lower end of the arc-shaped fixed perforated baffle is welded to the outer arc of the fan-shaped fixed connecting plate. The fixed elastic perforated anti-collision block is connected to the arc-shaped fixed perforated baffle through countersunk screws in the fastening components. The fastening components include bolts, spring washers, and countersunk screws. A set of bolts and spring washers is connected to the rotating mechanism through the fan-shaped fixed connecting plate, and a set of countersunk screws is connected to the arc-shaped fixed perforated baffle through the fixed elastic perforated anti-collision block, thereby achieving the purpose of reducing mechanical impact by adjusting to two extreme safety positions.
[0005] In use, this utility model involves selecting a suitable pitch circle and outer diameter perforated sector-shaped follower connecting plate and a suitable circumferential arc-shaped follower with perforated baffle for the adjustable limiting part, based on the model of the rotary mechanism and the size of the upper rotating part. After the perforated sector-shaped follower connecting plate of the adjustable limiting part is aligned with the threaded circular rotating part hole of the rotary mechanism on the pitch circle, a set of bolts and spring washers from the fastening components are installed for connection and fixation, enabling forward and reverse rotation with the rotating part. The arc-shaped follower with perforated baffle of the adjustable limiting part is located on the threaded part of the rotary mechanism. The outer side and upper end of the circular rotating part are welded to the outer arc of the fan-shaped follower connecting plate. Two sets of follower-adjustable limiters with perforated anti-collision blocks are fixed to the arc-shaped follower-with-perforated baffle by two sets of countersunk screws in the fastening parts, respectively aligned with the threaded holes on both sides. The rotary mechanism is a rotary bearing assembly of an unspecified model. The upper part is a circular rotating part with threaded holes, which mounts various work tools for switching different positions. The lower part is a circular fixing part with threaded holes, which is fixed to various pre-positioned platform base fixing seats. The middle part contains a control system that provides the power source for rotation and the encoder for positioning during normal operation. According to the... The model of the rotating mechanism and the size of the lower threaded circular fixed part are selected. The two sets of adjustable limiting parts are fitted with perforated fan-shaped fixed connecting plates with appropriate pitch circles and outer diameters, and arc-shaped fixed perforated baffles with appropriate circumferential arc and height. The perforated fan-shaped fixed connecting plates of the two sets of adjustable limiting parts are aligned with the holes of the threaded circular fixed part of the rotating mechanism on the pitch circle according to two predetermined extreme safety positions. Bolts and spring washers from the fastening parts are then installed and fixed to achieve positioning at the two extreme safety positions. The arc-shaped fixed perforated baffle of the adjustable limiting part is located on the rotating mechanism. The outer side and lower end of the circular fixed part with threaded holes of the structure are welded to the outer arc of the fan-shaped fixed connecting plate. The two sets of perforated anti-collision blocks of the fixed adjustable limit part are respectively connected and fixed to the threaded holes on both sides of the arc-shaped fixed perforated baffle by two sets of countersunk screws in the fastening parts. They are respectively in contact with the perforated anti-collision blocks on both sides of the arc-shaped follower perforated baffle of the follower adjustable limit part when rotated to two extreme safety positions. With the addition of limit switches, etc., it can be integrated with the control system. Under the premise of achieving the rotation reference calibration, the machine can be stopped in advance to reduce mechanical impact and realize the adjustable mechanical rotation safety limit of the rotation mechanism.
[0006] The beneficial effects of this utility model are as follows: Based on the model of the rotary mechanism and the dimensions of the upper rotating part, a suitable pitch circle and outer diameter perforated sector-shaped follower connecting plate and a circumferential arc and suitable height arc-shaped follower perforated baffle are selected. These are aligned with the circular rotating part with threaded holes on the pitch circle after their positions are determined. A set of bolts and spring washers are then installed and used for connection and fixation, enabling forward and reverse rotation with the rotating part. The arc-shaped follower perforated baffle is welded to the outer arc of the sector-shaped follower connecting plate. Two sets of follower perforated anti-collision blocks are aligned and fixed to the threaded holes on both sides of the arc-shaped follower perforated baffle using two sets of countersunk screws. Based on the model of the rotary mechanism and the dimensions of the lower fixed part, two sets of suitable pitch circle and outer diameter perforated sector-shaped fixed connecting plates and circumferential arc and suitable height arc-shaped fixed perforated baffles are selected. The two sets of perforated sector-shaped fixed connecting plates are connected to the... The circular fixed part with threaded holes is aligned with two predetermined limit safety positions on the pitch circle and fixed by a set of bolts and spring washers to achieve positioning at the two predetermined limit safety positions. The arc-shaped fixed perforated baffle is located outside the circular fixed part with threaded holes and its lower end is welded to the outer arc of the fan-shaped fixed connecting plate. The two sets of perforated anti-collision blocks are respectively aligned and fixed with the threaded holes on both sides of the arc-shaped fixed perforated baffle by the two sets of countersunk screws. In case of failure or special circumstances, they respectively contact the follower perforated anti-collision blocks on both sides of the arc-shaped follower perforated baffle of the follower adjustable limit part when rotating to the two limit safety positions. The additional limit switch achieves integration with the control system. Under the premise of achieving the rotation reference calibration, the machine can be stopped in advance to reduce mechanical impact, realizing the adjustable mechanical rotation safety limit use of the rotation mechanism under any circumstances.
[0007] Compared with the prior art, this utility model provides an adjustable mechanical rotation safety limit device, which improves the safety applicability of the rotation mechanism in any environment. Without changing the original rotation structure, it can realize the rapid adjustment of mechanical hard limit in various positions. The elastic anti-collision block with additional limit switch can realize the integration of mechanical limit and automatic control, and the shock absorption improves the overall performance of the device. Attached Figure Description
[0008] The structure and features of this utility model will be further described below with reference to the accompanying drawings and embodiments.
[0009] Figure 1 This is a schematic diagram of the composition structure of this utility model.
[0010] Figure 2 This is a schematic diagram of the adjustable limit part in this utility model.
[0011] Figure 3 This is a schematic diagram of the rotary mechanism, the fixed adjustable limit part, and the fastening parts in this utility model.
[0012] Figure 1 In the middle, 1. a follow-up adjustable limit part, 2. a rotary mechanism, 3. a fixed adjustable limit part, and 4. fastening parts. Figure 2 In the middle, 1.1 fan-shaped follower connecting plate, 1.2 arc-shaped follower perforated baffle, 1.3 follower elastic perforated anti-collision block. Figure 3 In the middle, 2.1 Circular rotating part with threaded hole, 2.2 Circular fixed part with threaded hole, 3.1 Fan-shaped fixed connecting plate, 3.2 Arc-shaped fixed baffle with hole, 3.3 Fixed elastic anti-collision block with hole, 4.1 Bolt, 4.2 Spring washer, 4.3 Countersunk screw. Detailed Implementation
[0013] See Figure 1 , Figure 2 and Figure 3 An adjustable mechanical rotation safety limit device includes a follower adjustable limit part 1, a rotation mechanism 2, a fixed adjustable limit part 3, and fastening parts 4. The follower adjustable limit part 1 includes a fan-shaped follower connecting plate 1.1, an arc-shaped follower perforated baffle 1.2, and a follower elastic perforated anti-collision block 1.3. The rotation mechanism 2 includes a circular rotating part with a threaded hole 2.1 and a circular fixed part with a threaded hole 2.2. The fixed adjustable limit part 3 includes a fan-shaped fixed connecting plate 3.1, an arc-shaped fixed perforated baffle 3.2, and a fixed elastic perforated anti-collision block 3.3. The fastening parts 4 include bolts 4.1, spring washers 4.2, and countersunk screws 4.3. The fan-shaped follower connecting plate 1.1 of the adjustable limit part 1 is connected and fixed to the upper circular rotating part 2.1 with threaded holes of the rotary mechanism 2 through bolts 4.1 and spring washers 4.2 in the fastening parts 4, and moves forward and backward with the circular rotating part 2.1 with threaded holes. The upper end of the arc-shaped follower perforated baffle 1.2 is welded to the outer arc of the fan-shaped follower connecting plate 1.1. The follower elastic perforated anti-collision block 1.3 is connected to the arc-shaped follower perforated baffle 1.2 through countersunk screws 4.3 in the fastening parts 4. The fan-shaped fixed connecting plate 3.1 of the fixed adjustable limit part 3 is connected to the lower circular fixed part 2.2 with threaded holes of the rotary mechanism 2 through the fastening parts 4. In fastening component 4, bolts 4.1 and spring washers 4.2 are connected and fixed, with a set of two parts fixed to two positions. The lower end of the arc-shaped fixed perforated baffle 3.2 is welded to the outer arc of the fan-shaped fixed connecting plate 3.1. The fixed elastic perforated anti-collision block 3.3 is connected to the arc-shaped fixed perforated baffle 3.2 through the countersunk screws 4.3 in the fastening component 4. The set of bolts 4.1 and spring washers 4.2 in the fastening component 4 are connected to the rotary mechanism 2 through the fan-shaped fixed connecting plate 3.1, and the set of countersunk screws 4.3 are connected to the arc-shaped fixed perforated baffle 3.2 through the fixed elastic perforated anti-collision block 3.3, so as to achieve the purpose of reducing mechanical impact by adjusting to two extreme safety positions.
[0014] In use, this utility model selects a suitable pitch circle and outer diameter perforated sector-shaped follower connecting plate 1.1 and a suitable circumferential arc-shaped follower with perforated baffle 1.2 based on the model of the rotary mechanism 2 and the size of the upper rotating part. The perforated sector-shaped follower connecting plate 1.1 of the adjustable follower limiting part 1 is aligned with the hole of the threaded circular rotating part 2.1 of the rotary mechanism 2 after their positions are determined on the pitch circle. A set of fastening parts 4, consisting of bolts 4.1 and spring washers 4.2, is then installed and fixed, enabling forward and reverse rotation of the rotating part. The arc-shaped follower with perforated baffle 1.2 of the adjustable follower limiting part 1 is located on the threaded circular rotating part 2.1 of the rotary mechanism 2. The outer side and upper end of the circular rotating part 2.1 with a perforated hole are welded to the outer arc of the fan-shaped follower connecting plate 1.1. The two sets of perforated anti-collision blocks of the follower adjustable limit part 1 are respectively connected and fixed to the threaded holes on both sides of the arc-shaped follower perforated baffle 1.2 by two sets of countersunk screws 4.3 in the fastening part 4. The rotary mechanism 2 is a rotary bearing assembly of an unspecified model. The upper part is the circular rotating part 2.1 with a threaded hole, which is used to install various working tools that can switch between different positions. The lower part is the circular fixing part 2.2 with a threaded hole, which is fixed to various pre-positioned platform base fixing seats. The middle part has a control system that provides the power source for rotation and the encoder for positioning during normal operation. According to the model of the rotary mechanism 2 The lower circular fixed part 2.2 with threaded holes is selected according to the appropriate pitch circle and outer diameter of the two sets of fixed adjustable limiting parts 3, the perforated fan-shaped fixed connecting plate 3.1 and the arc-shaped fixed perforated baffle 3.2 with appropriate circumferential arc and height. The perforated fan-shaped fixed connecting plate 3.1 of the two sets of fixed adjustable limiting parts 3 is aligned with the hole of the circular fixed part 2.2 with threaded holes on the pitch circle according to two predetermined limit safety positions. Bolts 4.1 and spring washers 4.2 of the fastening parts 4 are respectively installed and connected and fixed to achieve positioning at the two limit safety positions. The arc-shaped fixed perforated baffle 3.2 of the fixed adjustable limiting part 3 is located in the rotary mechanism 2. The outer side and lower end of the circular fixing part 2.2 with threaded holes are welded to the outer arc of the fan-shaped fixing connecting plate 3.1. The two sets of fixed adjustable limit parts 3 with fixed holes and anti-collision blocks 3.3 are fixed and connected to the threaded holes on both sides of the arc-shaped fixed hole baffle 3.2 by two sets of countersunk screws 4.3 in the fastening parts 4, and respectively. They are also in contact with the two side follower hole anti-collision blocks 1.3 of the arc-shaped follower hole baffle 1.2 of the follower adjustable limit part 1 when rotated to two extreme safety positions. With the addition of limit switches, etc., it can be integrated with the control system. Under the premise of achieving the rotation reference calibration, it can stop the machine in advance to reduce mechanical impact and realize the adjustable mechanical rotation safety limit of the rotation mechanism 2.
[0015] This utility model provides an adjustable mechanical rotation safety limit device, which improves the safety applicability of the rotation mechanism in any environment. Without changing the original rotation structure, it can realize the rapid adjustment of mechanical hard limit at various positions. The elastic anti-collision block with additional limit switch can realize the integration of mechanical limit and automatic control, and the shock absorption improves the overall performance of the device.
[0016] The above description is only a preferred embodiment of the present utility model. The above specific embodiments are not intended to limit the present utility model. Any modifications, alterations or equivalent substitutions made based on the above description shall fall within the protection scope of the present utility model.
Claims
1. An adjustable mechanical rotary safety stop device, characterized by: Including follow-up adjustable limiting part, rotary mechanism, fixed adjustable limiting part and fastening parts, the follow-up adjustable limiting part includes fan-shaped follow-up connecting plate, arc-shaped follow-up hole baffle and elastic hole anti-collision block, fan-shaped follow-up connecting plate is connected with the upper rotating part of rotary mechanism through bolt and elastic washer in fastening parts and is fixed, and rotates with rotating part positive rotation and reverse motion, arc-shaped follow-up hole baffle upper end is welded with fan-shaped follow-up connecting plate outside arc, and elastic hole anti-collision block is connected with arc-shaped follow-up hole baffle through countersunk head screw in fastening parts;The rotary mechanism is not specific model rotary supporting assembly, the upper part is circular rotating part with threaded hole, the lower part is circular fixed part with threaded hole, and there is power source for providing rotation and encoder for positioning in the middle;The fixed adjustable limiting part includes fan-shaped fixed connecting plate, arc-shaped fixed hole baffle and elastic hole anti-collision block, fan-shaped fixed connecting plate is connected with the lower fixed part of rotary mechanism through bolt and elastic washer in fastening parts and is fixed, a set of two pieces is fixed to two positions, arc-shaped fixed hole baffle lower end is welded with fan-shaped fixed connecting plate outside arc, and elastic hole anti-collision block is connected with arc-shaped fixed hole baffle through countersunk head screw in fastening parts;The fastening parts include bolt, elastic washer and countersunk head screw, a set of bolt and elastic washer is connected with the rotary mechanism through the fan-shaped fixed connecting plate, a set of countersunk head screw is connected with the arc-shaped fixed hole baffle through the elastic hole anti-collision block, to achieve the purpose of reducing mechanical impact for realizing adjustment to two limit safety positions.
2. The adjustable mechanical swing safety stop device of claim 1, wherein: According to the type of the rotary mechanism and the size of the upper rotating part, the appropriate index circle and outer diameter of the hole sector-shaped follow-up connecting plate of the follow-up adjustable limiting part, the circumferential arc and the appropriate height of the arc-shaped follow-up hole baffle are selected. The hole sector-shaped follow-up connecting plate of the follow-up adjustable limiting part is aligned with the threaded hole of the circular rotating part of the rotary mechanism on the index circle, and is connected and fixed by a set of bolts and elastic washers in the fastening parts, so as to realize the forward and reverse rotation of the rotating part. The arc-shaped follow-up hole baffle of the follow-up adjustable limiting part is located outside the threaded hole of the circular rotating part of the rotary mechanism, and the upper end is welded to the outer arc of the sector-shaped follow-up connecting plate. The two groups of hole anti-collision blocks of the follow-up adjustable limiting part are connected and fixed by two groups of countersunk screws in the fastening parts and the threaded holes on both sides of the arc-shaped follow-up hole baffle. The rotary mechanism is a rotary bearing assembly of a specific type. The upper part is a threaded hole of a circular rotating part for installing various work tools with different position switching. The lower part is a threaded hole of a circular fixed part fixed to various pre-positioned platform base fixed seats. The middle part has a control system to provide power source for rotation and encoder for positioning during normal operation. According to the type of the rotary mechanism and the size of the lower fixed part, the appropriate index circle and outer diameter of the hole sector-shaped fixed connecting plate of the two groups of fixed adjustable limiting parts, the circumferential arc and the appropriate height of the arc-shaped fixed hole baffle are selected. The hole sector-shaped fixed connecting plate of the two groups of fixed adjustable limiting parts is aligned with the threaded hole of the circular fixed part of the rotary mechanism on the index circle according to the pre-determined two extreme safe positions, and is connected and fixed by a set of bolts and elastic washers in the fastening parts, so as to realize the positioning of the two extreme safe positions. The arc-shaped fixed hole baffle of the fixed adjustable limiting part is located outside the threaded hole of the circular fixed part of the rotary mechanism, and the lower end is welded to the outer arc of the sector-shaped fixed connecting plate. The two groups of hole anti-collision blocks of the fixed adjustable limiting part are connected and fixed by two groups of countersunk screws in the fastening parts and the threaded holes on both sides of the arc-shaped fixed hole baffle, and are in contact with the hole anti-collision blocks on both sides of the arc-shaped follow-up hole baffle of the follow-up adjustable limiting part when rotated to the two extreme safe positions. The additional travel switch can be integrated with the control system to stop the machine in advance to reduce mechanical impact before the rotary reference calibration is realized, so as to realize the adjustable mechanical rotary safe limiting use of the rotary mechanism.