A base structure for a safety door limit stop
Patent Information
- Application Number
- CN202522245745.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-23
- Publication Date
- 2026-09-04
- Estimated Expiration
- 2035-10-23
AI Technical Summary
限位位置调节灵活性匮乏，多数底座的限位组件与支撑结构为固定连接，缺乏可滑动适配的连接设计，无法根据安全门规格变化或现场作业需求调整限位点位，且锁定结构稳定性不足，在安全门关闭撞击时，限位部件易因冲击力产生位移或松动，难以形成可靠的限位支撑，存在安全隐患，此外，现有结构的解锁与复位操作繁琐，调节过程需借助多种工具拆卸或组装部件，不仅延长了作业时间，还增加了操作人员的工作强度，更关键的是，其适配性较差，针对不同型号的安全门或不同的罐笼井口工况，往往需要定制专用的限位件，既提高了设备成本，又降低了设备的通用性与适配效率，难以满足罐笼安全门对限位精准、调节便捷的实际使用需求，因此，需对上述问题进行解决
[0010]Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model achieves flexible adjustment and stable locking of the limiting position through the cooperation between the sliding limiting component and the customized platform and the fixed platform; the dovetail groove of the customized platform slides and adapts to the fixed platform; the self-locking platform of the telescopic block in the sliding limiting component, together with the triangular platform, forms a one-way self-locking structure; the first spring provides driving force to ensure the stability of the fixed platform when the safety door impacts; pressing the sliding block can squeeze the telescopic block to unlock it, and with the second spring reset, the position of the fixed platform can be quickly adjusted, and then reinforced by positioning bolts to prevent loosening; it can adapt to different... without the need for customized special limiting components. The device improves its adaptability to on-site working conditions by meeting the limit requirements of the safety gate, satisfying the cage safety gate's requirements for precise limit and convenient adjustment; through the buffer structure and monitoring components, it achieves buffer protection and operational safety early warning when the safety gate is closed; the buffer block, third spring and buffer rod at the front of the fixed platform work together to buffer the impact force when the safety gate hits, and the rubber buffer block further enhances the shock absorption effect, avoiding hard collisions that could cause component damage; the position switch on the base can accurately monitor the closed position of the safety gate and transmit the signal to the control system to start the cage operation, improving the safety and controllability of the cage operation.
Smart Images
Figure CN224716199U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of cage protection equipment, and in particular to a base structure for a safety gate limit baffle. Background Technology
[0002] In the field of cage protection equipment technology, the base structure for the safety door limit baffle is a key component to ensure the safe operation of the cage. It needs to provide stable limit support for the safety door and adapt to the safety door limit requirements under different field conditions. However, the existing base structure has many shortcomings: The existing system suffers from a lack of flexibility in adjusting the limit position. Most bases have fixed connections between the limit components and the support structure, lacking a sliding, adaptable design. This makes it impossible to adjust the limit position according to changes in safety door specifications or on-site operational needs. Furthermore, the locking structure lacks stability; when the safety door closes and impacts, the limit components are prone to displacement or loosening due to the impact force, failing to provide reliable limit support and posing a safety hazard. In addition, the unlocking and resetting operations of the existing structure are cumbersome, requiring the use of various tools to disassemble or assemble components during adjustment. This not only prolongs operation time but also increases the workload of operators. More importantly, its adaptability is poor. Custom-made limit components are often needed for different models of safety doors or different cage wellhead conditions, increasing equipment costs and reducing the equipment's versatility and adaptability. This makes it difficult to meet the actual usage requirements of cage safety doors for precise limit positioning and convenient adjustment. Therefore, these problems need to be addressed. Utility Model Content
[0003] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a base structure for a safety door limit baffle.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: a base structure for a safety door limit baffle, comprising an I-beam, wherein a customized platform is installed on the inner middle of the front end of the I-beam, and a base is installed on one side of the front end of the top of the I-beam; a mounting groove is longitudinally opened in the middle of the front end of the base, and a horizontally pointing rearward position switch is installed in the mounting groove; multiple equidistant and oppositely oriented triangular pedestals are installed on both sides of the front end of the customized platform, and a transverse dovetail groove is opened on the top and bottom surfaces of the customized platform; a fixed platform that matches the dovetail groove is slidably connected to both sides of the customized platform, and a sliding limit component is installed in the fixed platform.
[0005] Preferably, the sliding limiting component includes a drive groove formed in a fixed platform, and pressing platforms connected to the drive groove and connected at adjacent ends are installed on the rear ends of the top and bottom surfaces of the fixed platform. Limiting plates are vertically installed on the rear ends of the top and bottom surfaces of the drive groove, and a telescopic groove is formed at the rear end of the fixed platform.
[0006] Preferably, a T-shaped telescopic block is slidably connected between the two limiting plates, and a self-locking platform that cooperates with a triangular platform is installed at the rear end of the telescopic block, and the telescopic block can slide in the telescopic groove; a first spring is vertically installed between the telescopic block and the limiting plate, and the self-locking platform cooperates with the triangular platform to form a one-way self-locking structure.
[0007] Preferably, each of the two pressing platforms has a sliding hole at its distal end, and a sliding block with a triangular cross-section is slidably connected to the inner cavity of the pressing platform. A sliding platform matching the sliding hole is installed at the middle of the distal ends of the two sliding blocks. Both sliding blocks are limited by the sliding hole through the sliding platform. The distal ends of the two first springs are respectively fixed to the proximal ends of the two sliding blocks.
[0008] Preferably, a positioning post is fixedly connected to the upper and lower parts of the front end of the inner cavity of the drive groove. The rear end of the positioning post is opposite to the front end of the telescopic block. A second spring is sleeved on the outer side of the positioning post. One end of the second spring is fixedly connected to the front end of the telescopic block, and the other end of the second spring is fixedly connected to the front end of the inner cavity of the drive groove. Threaded holes are opened at the upper and lower parts of the rear end of the telescopic block. The threaded holes penetrate the rear end of the fixed platform. A positioning bolt that matches the threaded hole is rotatably connected to the rear end of the fixed platform.
[0009] Preferably, a buffer hole is provided on the upper and lower sides of one side of the front end of the fixed platform, and a buffer rod that matches the buffer hole is slidably connected to the fixed platform. A rubber buffer block is fixedly connected to one end of the buffer rod. A third spring is installed between the buffer block and the fixed platform. The third spring is sleeved on the outside of the buffer rod, and both ends of the third spring are fixedly connected to the buffer block and the fixed platform, respectively.
[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model achieves flexible adjustment and stable locking of the limiting position through the cooperation between the sliding limiting component and the customized platform and the fixed platform; the dovetail groove of the customized platform slides and adapts to the fixed platform; the self-locking platform of the telescopic block in the sliding limiting component, together with the triangular platform, forms a one-way self-locking structure; the first spring provides driving force to ensure the stability of the fixed platform when the safety door impacts; pressing the sliding block can squeeze the telescopic block to unlock it, and with the second spring reset, the position of the fixed platform can be quickly adjusted, and then reinforced by positioning bolts to prevent loosening; it can adapt to different... without the need for customized special limiting components. The device improves its adaptability to on-site working conditions by meeting the limit requirements of the safety gate, satisfying the cage safety gate's requirements for precise limit and convenient adjustment; through the buffer structure and monitoring components, it achieves buffer protection and operational safety early warning when the safety gate is closed; the buffer block, third spring and buffer rod at the front of the fixed platform work together to buffer the impact force when the safety gate hits, and the rubber buffer block further enhances the shock absorption effect, avoiding hard collisions that could cause component damage; the position switch on the base can accurately monitor the closed position of the safety gate and transmit the signal to the control system to start the cage operation, improving the safety and controllability of the cage operation. Attached Figure Description
[0011] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure proposed in this utility model; Figure 2 This is a cross-sectional view of the overall structure proposed in this utility model; Figure 3 This is a schematic diagram of the telescopic block structure proposed in this utility model; Figure 4 The present utility model proposes Figure 2 Enlarged diagram of part A in the middle.
[0012] The following are the components listed in the diagram: 1. I-beam; 2. Customized platform; 3. Base; 4. Position switch; 5. Fixed platform; 6. Drive slot; 7. Limit plate; 8. Telescopic block; 9. Second spring; 10. First spring; 11. Pressing platform; 12. Sliding block; 13. Positioning bolt; 14. Buffer rod; 15. Third spring; 16. Buffer block. Detailed Implementation
[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0014] Example: See Figures 1 to 4 This utility model discloses a base structure for a safety door limit baffle, comprising an I-beam 1. The I-beam 1 facilitates the installation of a custom platform 2 via an external connecting screw, and the I-beam 1 is connected to an external support platform. Custom platforms 2 are installed on the inner middle of the front end of the I-beam 1, facilitating the sliding connection of a fixed platform 5 via dovetail grooves. A base 3 is installed on one side of the front end of the top of the I-beam 1. A longitudinal mounting groove is formed in the middle of the front end of the base 3, in which a horizontally pointing rearward-facing position switch 4 is installed. The base 3 facilitates the installation of the position switch 4 via washers and nuts. The position switch 4 is model XKC-KL200. The custom platform 2... Multiple equidistant and oppositely oriented triangular truncated pyramids are installed on both sides of the platform 2, and the top and bottom surfaces of the platform 2 are provided with transverse dovetail grooves. Fixed platforms 5 that mate with the dovetail grooves are slidably connected to both sides of the platform 2. The fixed platforms 5 facilitate the subsequent telescopic block 8 to limit the safety door. A sliding limit assembly is installed inside the fixed platform 5, including a drive groove 6 within the fixed platform 5. The drive groove 6 facilitates the installation of subsequent components. Pressing platforms 11, which connect to the drive groove 6 and are connected at adjacent ends, are installed on the rear ends of the top and bottom surfaces of the fixed platform 5. The pressing platforms 11 facilitate the subsequent sliding connection of the sliding block 12 through the sliding hole and limit the sliding block 12. Position; Limiting plates 7 are vertically installed on the rear ends of the top and bottom surfaces of the drive groove 6, and a telescopic groove is opened at the rear end of the fixed platform 5. The telescopic block 8 is slidably connected between the two limiting plates 7 through the limiting plates 7; a T-shaped telescopic block 8 is slidably connected between the two limiting plates 7. The self-locking platform fixed to the rear end of the telescopic block 8 by welding process cooperates with the triangular platform installed on the customized platform 2 to limit the fixed platform 5; a self-locking platform that cooperates with the triangular platform is installed at the rear end of the telescopic block 8, and the telescopic block 8 can slide in the telescopic groove; a first spring 10 is vertically installed between the telescopic block 8 and the limiting plate 7. The self-locking platform and the triangular platform form a one-way self-locking structure. Spring 10 facilitates the provision of driving force for telescopic block 8 to customized platform 2; sliding holes are provided at the distal ends of the two pressing platforms 11, and sliding blocks 12 with triangular cross-sections are slidably connected to the inner cavity of pressing platform 11. The sliding blocks 12 facilitate the compression of telescopic block 8 by external operator, so that telescopic block 8 resists the first spring 10 and lifts up to unlock fixed platform 5, allowing fixed platform 5 to slide on customized platform 2; sliding platforms with matching sliding holes are installed in the middle of the distal ends of the two sliding blocks 12, and the two sliding blocks 12 are limited by the sliding holes through the sliding platforms. The distal ends of the two first springs 10 are respectively fixed to the proximal ends of the two sliding blocks 12.
[0015] In this invention, a positioning post is fixedly connected to the upper and lower parts of the center of the front end of the inner cavity of the drive groove 6. The rear end of the positioning post is opposite to the front end of the telescopic block 8, and a second spring 9 is sleeved on the outer side of the positioning post. The second spring 9 facilitates the provision of a reset driving force for the sliding block 12. One end of the second spring 9 is fixedly connected to the front end of the telescopic block 8, and the other end of the second spring 9 is fixedly connected to the front end of the inner cavity of the drive groove 6. Threaded holes are opened at the upper and lower parts of the rear end of the telescopic block 8. The threaded holes penetrate the rear end of the fixed platform 5. A positioning bolt 13 that matches the threaded hole is rotatably connected to the rear end of the fixed platform 5. The positioning bolt 13 facilitates the limiting of the telescopic block 8 and prevents loosening. A buffer hole is provided on the upper and lower sides of the front side, penetrating the fixed platform 5. The fixed platform 5 is slidably connected to a buffer rod 14 that matches the buffer hole. The buffer rod 14 facilitates the fixation of the buffer block 16 by a hot-melt process. A rubber buffer block 16 is fixed to one end of the buffer rod 14. The buffer block 16 facilitates the buffering of the safety door with the help of the third spring 15. A third spring 15 is installed between the buffer block 16 and the fixed platform 5. The third spring 15 is sleeved on the outside of the buffer rod 14, and both ends of the third spring 15 are fixed to the buffer block 16 and the fixed platform 5 respectively. The third spring 15 facilitates the buffering force for the buffer block 16.
[0016] Working principle: When using this utility model, the I-beam 1 is installed on the external support platform by welding or external connecting bolts. Then, the customized platform 2 is installed on the inner side of the front and rear ends of the I-beam 1 by external connecting bolts. After the base 3 and the position switch 4 are installed in the positions required by the process, the position switch 4 is connected to the external control system through its own signal line and power line. When the cage reaches the wellhead, workers need to ride the cage down into the well. After the workers enter the cage, the external operators slide the safety door on the I-beam 1 to close it. The safety door will impact the buffer block 16 on one side. The third spring 15 will provide a reverse resistance force for the buffer block 16. The buffer rod 14 will ensure the guide limit of the third spring 15 and the buffer block 16. Since the buffer block 16 is connected to the fixed platform 5 through the buffer rod 14 and the third spring 15, and the telescopic block 8 slidably connected between the two limit plates 7 inside the fixed platform 5 forms a self-locking structure with the externally installed self-locking block and the triangular block of the customized platform 2, the fixed platform 5 provides stable limit when the safety door impacts. Then, when the safety door reaches the receiving signal position of the position switch 4, it sends a signal to the control room. Then, the control room starts the motor connected to the cage to drive the cage to descend. When there are no external operators, the safety door can also be moved by the chain drive structure installed on the outside of the I-beam 1 and connected to the safety door. When the position of the safety door needs to be changed according to different site conditions, first loosen the positioning bolt 13 that is threadedly connected to the fixed platform 5 and the threaded hole at the rear end of the telescopic block 8. Then, the operator presses down on the sliding block 12, which is installed on the upper and lower ends of the fixed platform 5 and is slidably connected to the platform 11. The sliding block 12 is limited by the limiting plate 7 and resists the compression of the telescopic block 8 by the first spring 10, so that the self-locking platform fixed to the telescopic block 8 is separated from the triangular platform installed on the customized platform 2. Then, the fixed platform 5 can be driven to slide on the customized platform 2. When the fixed platform 5 slides to the predetermined position, just release the limiting of the sliding block 12. The second spring 9 will drive the telescopic block 8 to engage with the triangular platform through the self-locking platform for one-way self-locking. The first spring 10 will also reset the sliding block 12. Finally, the positioning bolt 13 is installed through the threaded hole to limit the telescopic block 8, thus completing the change of the position of the fixed platform 5.
[0017] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A base structure for a safety door limit baffle, comprising an I-beam (1), characterized in that: Customized platforms (2) are installed on the inner middle of the front end of each I-beam (1), and a base (3) is installed on one side of the front end of the top of the I-beam (1). A mounting groove is longitudinally opened in the middle of the front end of the base (3), and a horizontally pointing rearward positioning switch (4) is installed in the mounting groove. Multiple equidistant and oppositely oriented triangular platforms are installed on both sides of the front end of the customized platform (2), and a transverse dovetail groove is opened on the top and bottom surfaces of the customized platform (2). Fixed platforms (5) that cooperate with the dovetail grooves are slidably connected on both sides of the customized platform (2), and a sliding limit component is installed in the fixed platform (5).
2. The base structure for a safety door limit baffle according to claim 1, characterized in that: The sliding limit assembly includes a drive groove (6) opened in the fixed platform (5). The top and bottom rear ends of the fixed platform (5) are equipped with pressing platforms (11) that communicate with the drive groove (6) and are connected at their proximal ends. Limit plates (7) are vertically installed on the top and bottom rear ends of the drive groove (6), and the rear end of the fixed platform (5) is provided with a telescopic groove.
3. The base structure for a safety door limit baffle according to claim 2, characterized in that: A T-shaped telescopic block (8) is slidably connected between the two limiting plates (7). A self-locking platform that matches the triangular platform is installed at the rear end of the telescopic block (8), and the telescopic block (8) can slide in the telescopic groove. A first spring (10) is vertically installed between the telescopic block (8) and the limiting plate (7). The self-locking platform and the triangular platform form a one-way self-locking structure.
4. The base structure for a safety door limit baffle according to claim 3, characterized in that: Both of the two pressing platforms (11) have sliding holes at their distal ends, and the inner cavity of the pressing platform (11) is slidably connected to a sliding block (12) with a triangular cross-section. The middle of the distal ends of the two sliding blocks (12) is equipped with a sliding platform that matches the sliding hole. Both sliding blocks (12) are limited by the sliding hole through the sliding platform. The distal ends of the two first springs (10) are respectively fixed to the proximal ends of the two sliding blocks (12).
5. The base structure for a safety door limit baffle according to claim 4, characterized in that: A positioning post is fixedly connected to the upper and lower part of the front end of the inner cavity of the drive groove (6). The rear end of the positioning post is opposite to the front end of the telescopic block (8). A second spring (9) is sleeved on the outer side of the positioning post. One end of the second spring (9) is fixedly connected to the front end of the telescopic block (8), and the other end of the second spring (9) is fixedly connected to the front end of the inner cavity of the drive groove (6). Threaded holes are opened at the upper and lower parts of the rear end of the telescopic block (8). The threaded holes penetrate the rear end of the fixed platform (5). The rear end of the fixed platform (5) is rotatably connected to a positioning bolt (13) that matches the threaded hole.
6. The base structure for a safety door limit baffle according to claim 5, characterized in that: The fixed platform (5) has a buffer hole that passes through the fixed platform (5) on one side of the front end. The fixed platform (5) is slidably connected to a buffer rod (14) that matches the buffer hole. The buffer rod (14) has a rubber buffer block (16) fixedly connected to one end. A third spring (15) is installed between the buffer block (16) and the fixed platform (5). The third spring (15) is sleeved on the outside of the buffer rod (14), and both ends of the third spring (15) are fixedly connected to the buffer block (16) and the fixed platform (5) respectively.