Pipeline encircling self-locking mechanism for elevator
By designing a pipe-hugging self-locking mechanism for the hoist, utilizing airbag deformation to provide jacking force and fixing it with clamps, the problem of unstable connection between the hoist and the fire-fighting pipeline was solved, achieving stable pipe hugging and safe hoisting.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WEIFANG CHANGDA CONSTR GROUP
- Filing Date
- 2025-06-30
- Publication Date
- 2026-05-19
AI Technical Summary
The existing connection between the hoist and the fire-fighting pipeline lacks a self-locking function, which makes the pipeline prone to tilting or separation when vibrating or shifting its center of gravity, posing a risk of falling objects from height and affecting construction safety and efficiency.
Design a pipe-clamping self-locking mechanism for a hoist. By cooperating with the clamping rod and the sliding top block, the deformation of the air bladder provides the pushing force to achieve clamping and limiting of the pipe. The clamping rod and the sliding top block are fixed by the connection between the clamping connector and the clamping base to prevent shaking.
It effectively prevents the pipeline from tilting or separating during the lifting process, improves construction safety and efficiency, and ensures a stable connection between the pipeline and the hoist.
Smart Images
Figure CN224261070U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a pipe-encircling self-locking mechanism for hoists, belonging to the field of fire-fighting pipeline installation technology. Background Technology
[0002] Hoists play a crucial role in the efficient, safe, and precise installation of fire-fighting pipelines. Through mechanized lifting and stable support functions, they significantly optimize the construction process and reduce operational risks.
[0003] Currently, the common connection method between hoists and fire-fighting pipelines on the market mainly relies on simple sliding block compression and limiting. However, due to the limited clamping force of the sliding block and the lack of self-locking function, the pipeline is prone to tilting due to vibration or center of gravity shift during the hoist's lifting process, or even completely separating from the hoist and falling, resulting in the risk of falling objects from height, which seriously threatens construction safety and installation efficiency.
[0004] Therefore, it is urgent to improve the self-locking mechanism of the pipe clamping mechanism for the hoist to solve the above-mentioned problems. Summary of the Invention
[0005] The purpose of this utility model is to provide a pipe-hugging self-locking mechanism for a hoist. When one end of the hugging rod contacts the upper end of the sliding top block, it can hug the pipe and thus limit the placement of the pipe.
[0006] To achieve the above objectives, the main technical solution adopted by this utility model includes: a pipe-encircling self-locking mechanism for a hoist, comprising a hoist body and two placement rods fixedly disposed on one side of the hoist body, wherein a sliding top block is slidably connected to each of the two placement rods;
[0007] The placement rod is provided with two circumferential structures that are fixedly connected to the hoist body, and the circumferential structures are used in conjunction with the sliding top block.
[0008] Preferably, the circumferential structure includes a top-out box fixedly disposed on one side of the elevator body and a circumferential rod slidably connected to the top-out box.
[0009] Preferably, the upper half of the circumferential rod is arc-shaped, the lower half of the circumferential rod is vertically slidably connected to the ejector box, and the ejector box has a placement cavity to accommodate the extension and retraction of the circumferential rod, and an airbag is provided inside the placement cavity;
[0010] A connecting rod is provided between the upper arc of the circumferential rod and the lower arc.
[0011] Preferably, one end of the circumferential rod is connected to a limiting plate by a screw thread, and the limiting plate is used to limit the sliding movement of the circumferential rod.
[0012] Preferably, a weight-increasing block is fixedly provided at the end of the circumferential rod away from the limiting plate, and a locking connector is fixedly provided on one side of the weight-increasing block.
[0013] Preferably, each of the two sliding top blocks is fixedly provided with a locking base, and the locking connector and the locking base are locked together.
[0014] Preferably, the ejector box is rotatably connected to a rotating plate via a rotating shaft on the side near the sliding top block.
[0015] This utility model has at least the following beneficial effects:
[0016] When the sliding top block squeezes the pipe, the pipe will move towards the ejector box. When the pipe contacts the ejector box, it can squeeze the airbag inside the ejector box. At this time, the airbag will deform and expand under pressure. When the airbag deforms, it can apply pressure to the bottom of the ring rod, thereby providing an upward ejection force to the ring rod. Then the ring rod slides with the ejector box, allowing the end of the ring rod away from the airbag to gradually move to one side. When one end of the ring rod contacts the upper end of the sliding top block, it can hug the pipe and limit the placement of the pipe.
[0017] In order to restrict the connection between the circumferential rod and the sliding top block, the clamping connector can be clamped and connected with the clamping base fixed on the sliding top block, so that the connection between the circumferential rod and the sliding top block can be clamped and fixed, thereby preventing the connection between the circumferential rod and the sliding top block from shaking during the operation of the hoist body, which would cause the circumferential rod to detach from the sliding top block. Attached Figure Description
[0018] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:
[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a pipe-encircling self-locking mechanism for a hoist according to an embodiment of this utility model;
[0020] Figure 2 This is a schematic diagram showing the connection between the clamping rod and the ejector box of a pipe clamping self-locking mechanism for a hoist in an embodiment of this utility model;
[0021] Figure 3 This is an enlarged schematic diagram of point A of a pipe-encircling self-locking mechanism for a hoist in an embodiment of this utility model;
[0022] Figure 4 This is an enlarged schematic diagram of section B of a pipe-encircling self-locking mechanism for a hoist in an embodiment of this utility model;
[0023] Figure 5 This is a schematic diagram of the inside of the ejector box after the circumferential rod of the pipe circumferential self-locking mechanism for a hoist is ejected in an embodiment of this utility model.
[0024] In the diagram, 1. Hoist body; 2. Placement rod; 3. Top box; 4. Circumferential rod; 401. Connecting rotating rod; 5. Sliding top block; 6. Placement cavity; 7. Airbag; 8. Limiting plate; 9. Locking base; 10. Locking connector; 11. Weighting block; 12. Rotating plate. Detailed Implementation
[0025] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.
[0026] Examples, such as Figures 1-5 As shown, a pipe-hugging self-locking mechanism for a hoist includes a hoist body 1 and two placement rods 2 fixedly disposed on one side of the hoist body 1. Each placement rod 2 is slidably connected to a sliding top block 5. The placement rods 2 allow the pipe to be placed on the hoist body 1, thereby enabling the hoist body 1 to be used to lift and install the pipe.
[0027] The placement rod 2 is equipped with two ring-shaped structures fixedly connected to the hoist body 1. The ring-shaped structures work in conjunction with the sliding top block 5. The ring-shaped structure includes an ejector box 3 fixedly installed on one side of the hoist body 1 and a ring-shaped rod 4 slidably connected to the ejector box 3. A weight-increasing block 11 is fixedly installed at the end of the ring-shaped rod 4 away from the limiting plate 8. A locking connector 10 is fixedly installed on one side of the weight-increasing block 11. A locking base 9 is fixedly installed at the upper end of each of the two sliding top blocks 5. The locking connector 10 and the locking base 9 are locked together. The ejector box 3 has a placement cavity 6 inside to accommodate the extension and retraction of the ring-shaped rod 4. An air bladder is installed inside the placement cavity 6. 7. When the sliding top block 5 squeezes the pipe, the pipe will move towards the ejector box 3. When the pipe contacts the ejector box 3, it can squeeze the airbag 7 inside the ejector box 3. At this time, the airbag 7 will deform and expand after being compressed. When the airbag 7 deforms, it can apply pressure to the bottom of the ring rod 4, thereby providing an upward pushing force to the ring rod 4. Then the ring rod 4 slides with the ejector box 3, so that the end of the ring rod 4 away from the airbag 7 can gradually move to one side. When one end of the ring rod 4 contacts the upper end of the sliding top block 5, it can hug the pipe and limit the placement of the pipe.
[0028] After the clamping rod 4 clamps and limits the pipe, the limiting plate 8 is a certain distance away from the airbag 7 (for reference). Figure 5 This provides a buffer zone for the pipe-driven retaining rod 4, preventing the airbag 7 from being subjected to pressure from both the pipe and the retaining rod 4 simultaneously.
[0029] In order to restrict the connection between the circumferential rod 4 and the sliding top block 5, the snap connector 10 can be snapped into the snap base 9 fixed on the sliding top block 5, so that the connection between the circumferential rod 4 and the sliding top block 5 can be snapped and fixed, thereby preventing the connection between the circumferential rod 4 and the sliding top block 5 from shaking during the operation of the hoist body 1, which would cause the circumferential rod 4 and the sliding top block 5 to separate.
[0030] It should be noted that the weight-adding block 11 provides gravity to the end of the circumferential rod 4 that is close to the sliding top block 5. Thus, after the circumferential rod 4 is pushed out by the airbag 7, it can move towards the sliding top block 5 through the action of the weight-adding block 11, thereby connecting with the sliding top block 5. In this process, the function of the airbag 7 is to provide driving force to the circumferential rod 4, so that the circumferential rod 4 can move towards the sliding top block 5 using the weight-adding block 11.
[0031] Conversely, when the pipeline needs to be separated from the hoist body 1, the hoist body 1 can be lowered directly. At this time, the pipeline will contact the inner side of the ring rod 4 and then push the ring rod 4. When the ring rod 4 is under force, the connection between the clamping connector 10 and the clamping base 9 will be separated, so that the ring rod 4 can be reset, and the pipeline can be freed from the restriction of the ring rod 4.
[0032] Furthermore, the ejector box 3 is rotatably connected to the rotating plate 12 on the side near the sliding top block 5 via a rotating shaft. The rotating plate 12 is the force-bearing surface. When the pipe is under force, it can squeeze the middle and lower half of the rotating plate 12, causing the rotating plate 12 to rotate and squeeze the airbag 7, thereby achieving the above-mentioned circumferential effect.
[0033] After the circling rod 4 completes the circling effect, there is a large distance between the bottom surface of the limiting plate 8 and the upper side of the airbag 7. Therefore, when the pipe pushes the circling rod 4, the circling rod 4 can gradually return to its original position. At this time, as the pipe gradually separates from the rotating plate 12, the airbag 7 can also gradually recover by the pressure of the circling rod 4 and push 12 back to its original position so that the circling rod 4 can be pushed again.
[0034] Furthermore, the upper half of the retaining rod 4 is arc-shaped, and the lower half of the retaining rod 4 is vertically slidably connected to the ejector box 3. One end of the retaining rod 4 is connected to a limit plate 8 by a screw thread. The limit plate 8 is used to limit the sliding of the retaining rod 4. A connecting rotating rod 401 is provided between the arc-shaped upper half and the lower half of the retaining rod 4. Since the upper half of the retaining rod 4 is arc-shaped (see reference...), Figure 2Thus, when the airbag 7 pushes out the retaining rod 4, the retaining rod 4 can encircle the pipe through the cooperation of the sliding top block 5. At the same time, since the lower half of the retaining rod 4 is a straight rod, it can slide vertically within the ejection box 3 when pushed out by the airbag 7. Furthermore, the connecting rotating rod 401 provided between the upper and lower halves of the retaining rod 4 allows the upper half of the retaining rod 4 to rotate through the connecting rotating rod 401 when it is pushed out, thereby enabling the retaining rod 4 to achieve the above-mentioned... The adjustment of the engagement with the sliding top block 5, and the fact that when the ring rod 4 is pushed by the pipe, its upper half can rotate through the connecting rod 401. Thus, when the ring rod 4 is retracted into the ejector box 3, the upper half of the ring rod 4 rotates through the connecting rod 401, which can provide better conditions for the separation of the pipe and the device. At the same time, the rotation of the connecting rod 401 has a certain frictional resistance, so the ring rod 4 will not rotate unless it is subjected to a large impact force, such as (the engagement of the clamping joint 10 and the clamping base 9).
[0035] It should be noted that when the clamping rod 4 is needed to clamp and limit the pipe again, the operator needs to manually move the clamping rod 4 to its original position. Figure 2 The state shown;
[0036] It should be noted that since the connection stroke between the circumferential rod 4 and the sliding top block 5 is fixed, the circumferential rod 4 can only encircle and limit pipes of a specified diameter. If it is necessary to adapt to pipes of different diameters, the circumferential rod 4 needs to be replaced to adjust the encircling distance between it and the sliding top block 5. In this way, pipes of different diameters can be lifted.
[0037] If the retaining rod 4 needs to be replaced, the operator can rotate the rotating plate 12 to open it, and then remove the bolts between 8 and the retaining rod 4, so that the retaining rod 4 can be separated from the ejector box 3.
[0038] The limiting plate 8 prevents the retaining rod 4 from detaching from the ejector box 3.
[0039] In this embodiment, as Figures 1-5 As shown in this embodiment, the principle of a pipe-locking mechanism for a hoist is as follows:
[0040] When the sliding top block 5 squeezes the pipe, the pipe will move towards the ejector box 3. When the pipe contacts the ejector box 3, it can squeeze the airbag 7 installed inside the ejector box 3. At this time, the airbag 7 will deform and expand after being compressed. When the airbag 7 deforms, it can apply pressure to the bottom of the ring rod 4, thereby providing an upward pushing force to the ring rod 4. Then the ring rod 4 slides with the ejector box 3, allowing the end of the ring rod 4 away from the airbag 7 to gradually move to one side. When one end of the ring rod 4 contacts the upper end of the sliding top block 5, it can hug the pipe and limit the placement of the pipe.
[0041] In order to restrict the connection between the circumferential rod 4 and the sliding top block 5, the snap connector 10 can be snapped into the snap base 9 fixed on the sliding top block 5, so that the connection between the circumferential rod 4 and the sliding top block 5 can be snapped and fixed, thereby preventing the connection between the circumferential rod 4 and the sliding top block 5 from shaking during the operation of the hoist body 1, which would cause the circumferential rod 4 and the sliding top block 5 to separate.
[0042] Conversely, when the pipeline needs to be separated from the hoist body 1, the hoist body 1 can be lowered directly. At this time, the pipeline will contact the inner side of the circumferential rod 4 and then push the circumferential rod 4. When the circumferential rod 4 is under force, the connection between the clamping connector 10 and the clamping base 9 will be separated, so that the circumferential rod 4 can be reset, and the pipeline can be separated from the hoist body 1.
[0043] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.
[0044] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes that element.
[0045] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.
Claims
1. A pipe-locking mechanism for a hoist, characterized in that: It includes a hoist body (1) and two placement rods (2) fixedly installed on one side of the hoist body (1), and each of the two placement rods (2) is slidably connected to a sliding top block (5); The placement rod (2) is provided with two circumferential structures that are fixedly connected to the hoist body (1), and the circumferential structures are used in conjunction with the sliding top block (5).
2. The self-locking mechanism for a pipe circumference in a hoist according to claim 1, characterized in that: The circumferential structure includes an ejector box (3) fixedly disposed on one side of the elevator body (1) and an circumferential rod (4) slidably connected to the ejector box (3).
3. The self-locking mechanism for a hoist pipe circumference according to claim 2, characterized in that: The upper half of the circumferential rod (4) is arc-shaped, and the lower half of the circumferential rod (4) is vertically slidably connected to the ejector box (3). The ejector box (3) has a placement cavity (6) inside to accommodate the extension and retraction of the circumferential rod (4). An airbag (7) is provided inside the placement cavity (6). Among them, a connecting rotating rod (401) is provided between the upper arc and the lower half of the ring rod (4).
4. The self-locking mechanism for a hoist pipe circumference as described in claim 3, characterized in that: One end of the circumferential rod (4) is connected to a limiting plate (8) by a screw thread, and the limiting plate (8) is used to limit the sliding of the circumferential rod (4).
5. A pipe-locking mechanism for a hoist according to claim 4, characterized in that: A weight-adding block (11) is fixedly provided at one end of the ring rod (4) away from the limiting plate (8), and a snap-fit connector (10) is fixedly provided on one side of the weight-adding block (11).
6. A pipe-locking mechanism for a hoist according to claim 5, characterized in that: Both sliding top blocks (5) are fixedly provided with locking bases (9) at their upper ends, and the locking connector (10) and the locking bases (9) are locked together.
7. A pipe-locking mechanism for a hoist according to claim 6, characterized in that: The ejector box (3) is rotatably connected to a rotating plate (12) on the side near the sliding top block (5) via a rotating shaft.