CN220354202U - Anti-falling cam locking device - Google Patents
Anti-falling cam locking device Download PDFInfo
- Publication number
- CN220354202U CN220354202U CN202321782913.4U CN202321782913U CN220354202U CN 220354202 U CN220354202 U CN 220354202U CN 202321782913 U CN202321782913 U CN 202321782913U CN 220354202 U CN220354202 U CN 220354202U
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- China
- Prior art keywords
- locking device
- guide rail
- pulley
- cam locking
- shaft
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- 238000003466 welding Methods 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 2
- 230000003028 elevating effect Effects 0.000 claims 4
- 239000003208 petroleum Substances 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 11
- 239000010959 steel Substances 0.000 description 11
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of petroleum equipment, and discloses a cam locking device for preventing falling, which comprises a guide rail and a lifting trolley moving up and down along the guide rail, wherein the lifting trolley is provided with the cam locking device, the cam locking device comprises two vertical plates, one side of each of the two vertical plates is provided with a brake block, the other side of each of the two vertical plates is provided with a bent plate, the bottom of each of the bent plates is provided with a spring connecting plate, the spring connecting plate is connected with a spring, the other end of each of the springs is connected with the lifting trolley, the plate surface of each of the two vertical plates is provided with a circular tube and a shaft hole, a rotating shaft is arranged in each circular tube, the two vertical plates are connected with the lifting trolley through the rotating shaft, a pulley shaft is arranged in each shaft hole, and pulleys are movably connected onto the pulley shafts.
Description
Technical Field
The utility model relates to the technical field of petroleum equipment, in particular to a cam locking device for preventing falling.
Background
The casing centering table is auxiliary equipment specially matched with an oil rig, and the casing centering table pulls a steel wire rope through a pneumatic winch, sends an operation platform to a proper height and performs casing setting centering operation. Because personnel work aloft, the danger is very big, in order to prevent falling the danger, not only need consider the outage protection of air supply, still need consider the possibility that pulls the split of stage body wire rope that the removal was used about, therefore need a mechanical self-locking device with outage protection to satisfy aloft work demand.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model aims to provide the anti-falling cam locking device which can solve the technical problem of personal safety caused by broken steel wire ropes when working aloft.
In order to achieve the above object, the present utility model provides the following technical solutions:
the utility model provides a prevent falling and use cam locking device, includes the guide rail and follows the lift dolly of guide rail reciprocates, be equipped with lift platform on the lift dolly, the guide rail top is equipped with pneumatic winch, the winding has wire rope on the pneumatic winch, wire rope one end fixed connection is on pneumatic winch, other end fixed connection is on the lift dolly, be equipped with cam locking device on the lift dolly, cam locking device includes two risers, two riser one side is equipped with the brake shoe, the brake shoe cooperates with the guide rail and realizes the braking, and the opposite side is equipped with the bent plate, the bent plate bottom is equipped with the spring coupling board, be connected with the spring on the spring coupling board, the other end and the lift dolly of spring are connected, be equipped with pipe and shaft hole on the face of two risers, be equipped with the rotation axis in the pipe, two risers pass through the rotation axis and are connected with the lift dolly, be equipped with the pulley in the shaft hole, swing joint has the pulley on the pulley and its fag end fixed connection is on the lift dolly, the knot fixed connection is taken turns to the pulley.
Preferably, the lifting platform is connected to the lifting trolley through pins, and the lifting trolley is formed by welding a plurality of plates.
Preferably, the contact surface of the brake block adopts a tooth-shaped structure.
Preferably, a stop block is further arranged on the plate surface of one single-side vertical plate of the double vertical plates, and the top surface of the stop block is contacted with the bottom end of the shaft surface of the pulley shaft.
Compared with the prior art, the utility model has the beneficial effects that: the anti-falling cam locking device provided by the utility model has a simple structure and strong practicability, has a rope breakage protection mechanical self-locking function, can meet the requirements without manual operation, and further improves the safety of overhead operation.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a front view of the lifting trolley of the present utility model;
FIG. 3 is a side view of the lifting trolley of the present utility model;
fig. 4 is a schematic view of the cam lock device of the present utility model.
Reference numerals illustrate:
1-lifting trolley, 2-guide rail, 3-lifting platform, 4-pulley shaft, 5-spring, 6-shackle, 7-pulley, 8-rotation axis, 9-cam locking device, 91-brake block, 92-round tube, 93-double vertical plate, 94-block, 95-bent plate and 96-spring connecting plate.
Detailed Description
The utility model will now be described in detail, by way of example, with reference to the accompanying drawings, wherein it is evident that the embodiments described are only some, but not all, of the embodiments of the utility model.
As shown in fig. 1 to 4, the utility model provides a cam locking device for preventing falling, which comprises a guide rail 2 and a lifting trolley 1 moving up and down along the guide rail 2, wherein a lifting platform 3 is arranged on the lifting trolley 1, and a protective fence is arranged on the lifting platform 3; the pneumatic lifting device is characterized in that a pneumatic winch is arranged at the top of the guide rail 2, a steel wire rope is wound on the pneumatic winch, one end of the steel wire rope is fixedly connected to the pneumatic winch, the other end of the steel wire rope is fixedly connected to the lifting trolley 1, a cam locking device 9 is arranged on the lifting trolley 1, the cam locking device 9 comprises a double vertical plate 93, a brake block 91 is arranged on one side of the double vertical plate 93, the brake block 91 is matched with the guide rail 2 to realize braking, a bent plate 95 is arranged on the other side of the double vertical plate, a spring connecting plate 96 is arranged at the bottom of the bent plate 95, a spring 5 is connected to the spring connecting plate 96, the other end of the spring 5 is connected with the lifting trolley 1, a circular tube 92 and a shaft hole are formed in the plate surface of the double vertical plate 93, a rotating shaft 8 is arranged in the circular tube 92, the double vertical plate 93 is connected with the lifting trolley 1 through the rotating shaft 8, a pulley shaft 4 is arranged in the shaft hole, a pulley 7 is movably connected to the pulley 4, the steel wire rope bypasses the pulley 7, and the rope head of the steel wire rope is fixedly connected to the pulley 6, and the pulley 6 is fixedly connected to the lifting trolley 1.
Further, in this embodiment, the lifting platform 3 is connected to the lifting trolley 1 through pins, and the lifting trolley 1 is formed by welding a plurality of plates.
Further, in the present embodiment, the contact surface of the brake block 91 adopts a tooth-shaped structure, so that the friction force between the brake block and the guide rail 2 is increased; the brake block 91 is made of high-strength steel, so that the welding performance between the brake block and the double vertical plates 93 is guaranteed.
Further, in this embodiment, a stop block 94 is further disposed on the plate surface of one of the single side vertical plates of the double vertical plates 93, and the top surface of the stop block 94 contacts with the bottom end of the shaft surface of the pulley shaft 4. By welding the stop 94 to the single-sided riser, it is advantageous to avoid rotation of the pulley shaft 4.
When the lifting trolley 1 moves up and down, the pulley 7 is pulled by the steel wire rope on the pneumatic winch, the steel wire rope generates upward pulling force, and the cam locking device 9 changes in angle around the rotating shaft 8 due to the gravity of the lifting trolley 1 and the lifting platform 3, so that the brake block 91 is separated from the guide rail 2, and a certain gap is generated. When the unexpected rope is broken, the upward tension of the steel wire rope disappears, the spring 5 is reset, the generated tension enables the cam locking device 9 to reset, and the brake block 91 and the guide rail 2 generate friction to brake.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, shall cover the scope of the present utility model by equivalent substitution or modification according to the technical scheme of the present utility model and the application concept thereof.
Claims (4)
1. The utility model provides a prevent cam locking device for falling, includes guide rail (2) and along elevating trolley (1) of guide rail (2) reciprocates, be equipped with elevating platform (3) on elevating trolley (1), guide rail (2) top is equipped with pneumatic winch, the winding has wire rope on the pneumatic winch, wire rope one end fixed connection is on pneumatic winch, and the other end fixed connection is on elevating trolley (1), its characterized in that: be equipped with cam locking device (9) on lift dolly (1), cam locking device (9) are including two riser (93), two riser (93) one side are equipped with brake shoe (91), brake shoe (91) are equipped with bent plate (95) with the realization braking of guide rail (2) cooperation, and the opposite side is equipped with bent plate (95), bent plate (95) bottom is equipped with spring coupling plate (96), be connected with spring (5) on spring coupling plate (96), the other end and the lift dolly (1) of spring (5) are connected, be equipped with pipe (92) and shaft hole on the face of two riser (93), be equipped with rotation axis (8) in pipe (92), be equipped with pulley shaft (4) in the shaft hole, swing joint has pulley (7) on pulley shaft (4), wire rope walks around pulley (7) and its fag end fixed connection on shackle (6), shackle (6) fixed connection is on lift dolly (1).
2. A fall arrest cam lock arrangement as claimed in claim 1, wherein: the lifting platform (3) is connected to the lifting trolley (1) through pins, and the lifting trolley (1) is formed by welding a plurality of plates.
3. A fall arrest cam lock arrangement as claimed in claim 1, wherein: the contact surface of the brake block (91) adopts a tooth-shaped structure.
4. A fall arrest cam lock arrangement as claimed in claim 1, wherein: a stop block (94) is further arranged on the plate surface of one single-side vertical plate of the double vertical plates (93), and the top surface of the stop block (94) is contacted with the bottom end of the shaft surface of the pulley shaft (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321782913.4U CN220354202U (en) | 2023-07-08 | 2023-07-08 | Anti-falling cam locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321782913.4U CN220354202U (en) | 2023-07-08 | 2023-07-08 | Anti-falling cam locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220354202U true CN220354202U (en) | 2024-01-16 |
Family
ID=89482143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321782913.4U Active CN220354202U (en) | 2023-07-08 | 2023-07-08 | Anti-falling cam locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220354202U (en) |
-
2023
- 2023-07-08 CN CN202321782913.4U patent/CN220354202U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |