Falling protector and safety operation protection device

Abstract

The invention relates to the technical field of oil tank truck operation safety protection, in particular to an anti-falling device and a safety operation protection device.The anti-falling device comprises a mounting box, an anti-falling device, an anti-falling device and a safety operation protection device.The mounting box is internally provided with a containing space and a mounting shaft arranged in the containing space; the take-up unit comprises a main wheel disc rotationally arranged on the mounting shaft, leaf spring steel arranged between the main wheel disc and the mounting box and a steel wire rope arranged on the main wheel disc, and the buffer locking unit comprises a pawl elastically arranged on the main wheel disc and an inner ratchet wheel arranged in the mounting box in a threaded mode. According to the falling protector and the safety operation protection device, when a worker is prevented from falling from a high place, a steel wire rope can rotate and stretch out rapidly, so that the main wheel disc is driven to rotate rapidly, the pawl is rotated out to make contact with the inner ratchet wheel, and the inner ratchet wheel is driven to rotate and move; therefore, the worker is protected from falling from a high place.

Description

Technical Field

[0001] The invention relates to the technical field of safety protection for tanker operation, and in particular to a fall arrester and a safety operation protection device. Background Art

[0002] In the oil depot logistics industry, loading and unloading workers often perform loading and unloading operations at heights, and accidents of falling from heights often occur. This situation has existed for a long time and has not been improved. The main direct cause is that the loading and unloading workers at heights do not use safety belts correctly or do not use safety belts at all.

[0003] These working methods of incorrectly hanging safety belts or not using safety belts often cause workers to fall from heights during loading and unloading operations. When this happens, the safety belts cannot provide good protection or there is no protection from the safety belts, which leads to personal injury accidents. However, there is currently no anti-falling safety device dedicated to tank truck workers working at heights on the market. To this end, the present invention provides a fall arrester and a safe operation protection device. Summary of the invention

[0004] In view of the problems existing in the above-mentioned existing fall arresters and safe operation protection devices, the present invention is proposed.

[0005] Therefore, one of the objects of the present invention is to provide a fall arrester, the purpose of which is to protect workers from falling and getting injured.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a fall arrester, comprising:

[0007] The installation box has a receiving space inside and an installation shaft arranged in the receiving space;

[0008] A wire take-up unit, comprising a main wheel rotatably arranged on the installation shaft, a spring sheet steel arranged between the main wheel and the installation box, and a steel wire rope arranged on the main wheel, one end of the steel wire rope passing through the bottom of the installation box; and,

[0009] The buffer locking unit comprises a pawl elastically arranged on the main wheel disc, an inner ratchet threadedly arranged inside the installation box, and the pawl cooperates with the inner ratchet.

[0010] As a preferred solution of the fall arrester of the present invention, wherein: the installation box comprises a lower shell and an upper shell, and the installation shaft is installed in the lower shell;

[0011] A first annular convex edge is provided on the side wall of the lower shell;

[0012] A thread is arranged between the inner ratchet and the first annular protrusion, and the inner ratchet is located on the inner side of the first annular protrusion.

[0013] As a preferred solution of the fall arrester of the present invention, wherein: a second annular convex edge is further provided on the side wall of the lower shell;

[0014] The second annular convex edge is located inside the first annular convex edge, and an elastic gasket is provided on the second annular convex edge;

[0015] One end of the elastic gasket extends beyond the second annular protrusion and cooperates with the inner ratchet.

[0016] As a preferred solution of the fall arrester of the present invention, wherein: the inner ratchet comprises an annular body, and a plurality of limiting teeth arranged on the inner side of the annular body;

[0017] The outer side of the annular body is threadedly connected to the first annular protrusion;

[0018] The limiting tooth cooperates with the pawl.

[0019] As a preferred solution of the fall arrester of the present invention, wherein: the ratchet is provided in plurality, and one end of the ratchet is rotatably connected to the main wheel disc, and a tension spring is provided between the middle of the ratchet and the main wheel disc;

[0020] The main wheel disc is provided with a limit block on the main wheel disc that cooperates with the ratchet pawl;

[0021] The other end of the pawl matches with the limiting tooth.

[0022] As a preferred solution of the fall arrester of the present invention, wherein: a wire collection groove is provided in the middle of the main wheel disc, a groove is provided on the side, and the ratchet is installed on the other side of the main wheel disc;

[0023] The steel wire rope is wound in the wire take-up groove;

[0024] The spring sheet steel is located in the groove and connected to the inner wall of the installation box.

[0025] As a preferred solution of the fall arrester of the present invention, wherein: the steel wire rope passes through the bottom of the installation box and a hook is installed at the end;

[0026] A rubber shock-absorbing block is installed on the steel wire rope.

[0027] The beneficial effect of the fall arrester is that when a worker wants to avoid falling from a height, the wire rope will rotate and extend rapidly, thereby driving the main wheel to rotate rapidly, turning the pawl out to contact the inner ratchet, driving the inner ratchet to rotate and move, and when it moves to the end of the stroke, the wire rope will stop extending, thereby protecting the worker from falling from a height.

[0028] Another object of the present invention is to provide a safety operation protection device, the purpose of which is to protect workers working at high places on tank trucks from falling and getting injured.

[0029] In order to solve the above technical problems, the present invention provides the following technical solutions: a safety operation protection device, including a fall arrester, and also including:

[0030] A support unit, comprising a column, a truss steel rotatably disposed on the top of the column, and a guide rail disposed on the truss steel;

[0031] The fall arrester is slidably arranged on the guide rail.

[0032] As a preferred solution of the safe operation protection device of the present invention, a pulley is installed on the top of the installation box, and the pulley cooperates with the guide rail.

[0033] As a preferred solution of the safe operation protection device of the present invention, limit shock absorbers are provided at both ends of the guide rail.

[0034] The beneficial effects of the present invention are as follows: the workers can increase their moving range by hanging the hooks on their bodies, and the rotating truss steel and the sliding fall arrester cooperate with each other. When the workers fall accidentally, the fall arrester can protect them and prevent them from falling and getting injured. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0036] Figure 1 It is a schematic diagram of the overall structure of Embodiment 1 of the present invention.

[0037] Figure 2 This is a schematic diagram of the first annular convex edge structure of Example 1 of the present invention.

[0038] Figure 3 Schematic diagram of the inner ratchet structure of the first embodiment of the present invention.

[0039] Figure 4 Schematic diagram of the pawl structure of the first embodiment of the present invention.

[0040] Figure 5 This is a schematic diagram of the main wheel structure of embodiment 1 of the present invention.

[0041] Figure 6Schematic diagram of the elastic gasket structure of the second embodiment of the present invention.

[0042] Figure 7 This is a schematic diagram of the pawl structure of the second embodiment of the present invention.

[0043] Figure 8 It is a schematic diagram of the overall structure of the third embodiment of the present invention.

[0044] Fig. 9 for Figure 8 A magnified image of area A. DETAILED DESCRIPTION

[0045] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0046] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0047] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0048] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0049] Example 1, reference Figure 1-Figure 5 , which is the first embodiment of the present invention, provides a fall arrester, which includes a mounting box 100, a wire take-up unit 200 and a buffer locking unit 300;

[0050] The installation box 100 has an accommodating space inside, and an installation shaft 101 is arranged in the accommodating space.

[0051] The wire-taking unit 200 includes a main wheel disc 201 rotatably arranged on the mounting shaft 101, the main wheel disc 201 and the mounting shaft 101 are rotatably connected via a rotating shaft, a spring sheet steel 202 arranged between the main wheel disc 201 and the mounting box 100, a steel wire rope 203 arranged on the main wheel disc 201, a through groove is provided on the main wheel disc 201, an end of the steel wire rope 203 is inserted into the through groove and is fixed to the main wheel disc 201 by rivets, and the steel wire rope 203 is wound on the main wheel disc 201, and the other end of the steel wire rope 203 passes through the bottom of the mounting box 100.

[0052] Among them, a hook 400 is installed at the end of the wire rope 203 passing through the bottom of the installation box 100; the hook 400 can be hung with the clothes worn by the staff, so that the staff and the wire rope 203 are firmly connected together.

[0053] The buffer locking unit 300 includes a pawl 301 elastically arranged on the main wheel disc 201, and an inner ratchet 302 threadedly arranged inside the installation box 100, and the pawl 301 cooperates with the inner ratchet 302; wherein a protruding extension shaft is provided on one side of the main wheel disc 201, and the pawl 301 is inserted into the extension shaft of the main wheel disc 201 through a spring. In the initial state, the pawl 301 does not contact the inner ratchet 302. When the main wheel disc 201 rotates rapidly, the pawl 301 stretches the spring under the action of centrifugal force and unfolds. When the pawl 301 is unfolded, it will contact the inner ratchet 302, thereby driving the inner ratchet 302 to rotate synchronously. When the inner ratchet 302 rotates, it will be displaced. When the inner ratchet 302 is displaced to the end of the stroke, it will stop moving. The friction force applied to the inner ratchet 302 during the movement process can slow down the rotation speed of the main wheel disc 201, and when the inner ratchet 302 stops moving, the main wheel disc 201 will stop rotating.

[0054] Furthermore, the inner ratchet 302 includes an annular body 302a, and a plurality of position-limiting teeth 302b disposed inside the annular body 302a; the outer side of the annular body 302a is threadedly connected to the first annular protrusion 104;

[0055] The limiting tooth 302b is provided with two edges, one of which will compress the pawl 301 to prevent the pawl 301 from expanding when it contacts the end of the pawl 301, and the other edge will resist the pawl 301 when it contacts the pawl 301. At this time, the pawl 301 can drive the limiting tooth 302b to rotate synchronously, ensuring that the inner ratchet 302 will be driven to rotate only when the wire rope 203 is quickly extended from the installation box 100, and the inner ratchet 302 will not be driven to rotate when the wire rope 203 is quickly retracted.

[0056] The limiting tooth 302b cooperates with the pawl 301

[0057] Further, the installation box 100 includes a lower shell 102 and an upper shell 103, the upper shell 103 is fixed to the lower shell 102, and an accommodation space is formed between the lower shell 102 and the upper shell 103, the installation shaft 101 is located in the accommodation space and is installed in the lower shell 102;

[0058] A first annular protrusion 104 is disposed on the side wall of the lower shell 102 ; a threaded arrangement is provided between the inner ratchet 302 and the first annular protrusion 104 , and the inner ratchet 302 is located inside the first annular protrusion 104 , wherein the inner ratchet 302 can rotate and move relative to the first annular protrusion 104 .

[0059] In the initial state, the inner ratchet 302 is away from the inner wall of the lower shell 102. When it rotates under the action of the pawl 301, it will approach the lower shell 102 until it contacts the lower shell 102 to achieve the stationary state of the inner ratchet 302. During the movement of the inner ratchet 302, it can play a movable buffering role, and when it is blocked and fixed, it can play a locking role. When the inner ratchet 302 realizes the buffering and locking function, the fall arrester has completed its protection mission. At this time, the fall arrester needs to be replaced to avoid the secondary use of the fall arrester.

[0060] Furthermore, a wire take-up groove 201a is provided in the middle of the main wheel disc 201, and a groove 201b is provided on the side thereof. A ratchet 301 is installed on the other side of the main wheel disc 201; the steel wire rope 203 is wound in the wire take-up groove 201a;

[0061] The spring sheet steel 202 is located in the groove 201b and connected to the inner wall of the installation box 100. The spring sheet steel 202 is spirally shaped, and its outer end is fixed to the main wheel disc 201. The inner side is provided with a fixed shaft that is fixed to the inner wall of the installation box 100. When the steel wire rope 203 is pulled out of the installation box 100, the main wheel disc 201 will be driven to rotate, thereby driving the spring sheet steel 202 to be reeled. When the tension of the steel wire rope 203 is released, the spring sheet steel 202 will pop out and drive the main wheel disc 201 to rotate to reel in the steel wire rope 203.

[0062] During operation, the end of the wire rope 203 in the fall arrester is connected to the staff, so that the wire rope 203 will not be separated from the staff. When the staff walks normally and stays away from the installation box 100, the wire rope 203 will be stretched. At this time, the main wheel 201 rotates slowly, and the spring sheet steel 202 is compressed at the same time. The pawl 301 and the inner ratchet 302 do not contact each other. At the same time, when the staff approaches the installation box 100, the compressed spring sheet steel 202 pops out to drive the main wheel 201 to rotate and automatically reel the wire rope 203.

[0063] When a worker falls accidentally, the wire rope 203 is pulled out quickly as the worker falls, and the main pulley 201 is driven to rotate quickly. At this time, the centrifugal force of the main pulley 201 can rotate the pawl 301 to counteract the inner ratchet 302, and further drive the inner ratchet 302 to rotate and stop against the inner wall of the installation box 100. During the movement of the inner ratchet 302, it can play a movable buffering role. When it is blocked and fixed, it can play a locking role, so that the worker will not be violently pulled when falling, thereby protecting the worker. After that, the hung worker will be rescued, and the high-altitude operation will be carried out again after replacing a new fall arrester.

[0064] Example 2, reference Figure 6 and Figure 7 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: a second annular convex edge 105 is further provided on the side wall of the lower housing 102;

[0065] The second annular protrusion 105 is located inside the first annular protrusion 104 , and an elastic gasket 303 is disposed on the second annular protrusion 105 ; one end of the elastic gasket 303 extends beyond the second annular protrusion 105 and matches with the inner ratchet 302 .

[0066] Among them, the setting of the elastic gasket 303 can further increase the resistance encountered by the inner pawl 301 during rotation and movement, improve its ability to slow down the rotation speed of the main wheel 201, and further protect the staff from feeling of falling. When the inner pawl 301 rotates and moves, it will approach the installation box 100 and squeeze the elastic gasket 303, causing the elastic gasket 303 to deform and increase its buffering ability.

[0067] An installation gap is set between the main wheel disc 201 and the inner ratchet 301 to match the elastic gasket 303. Even if an installation gap is formed in the reducer of this structure, it only exists between the upper shell 103 and the inner ratchet 302. Therefore, the installation position of the main wheel disc 201 can be effectively limited. While it can play a good buffering and protective role, it will not shake during use, and it is safer to use. The elastic gasket 303 is made of metal material, and the force it can withstand is also stronger, making it more applicable.

[0068] Among them, there are multiple pawls 301, and one end of the pawl 301 is rotatably connected to the main wheel disc 201, and a tension spring 304 is provided between the middle part of the pawl 301 and the main wheel disc 201; the main wheel disc 201 is provided with a limit block 305 on the main wheel disc 201 that cooperates with the pawl 301.

[0069] In the initial state, the pawl 301 is not in contact with the inner ratchet 302. When the main wheel disc 201 rotates rapidly, the pawl 301 stretches the spring under the action of centrifugal force, and unfolds to resist the limit block 305. At the same time, the pawl 301 will contact the inner ratchet 302 when unfolded. Under the resistance of the limit block 305, the pawl 301 can drive the inner ratchet 302 to rotate synchronously. When the inner ratchet 302 rotates, it will move. When the inner ratchet 302 moves, it will squeeze the elastic gasket 303, so that the elastic gasket 303 The gasket 303 is deformed to increase its buffering ability. When the inner ratchet 302 moves to the end of the stroke, it stops moving. The resistance encountered by the inner ratchet 302 during the movement process can slow down the rotation speed of the main wheel disc 201. When the inner ratchet 302 stops moving, the main wheel disc 201 also stops rotating. The pawl 301 is relatively wide and will not be separated from the pawl 301 when the inner ratchet 302 moves, ensuring that the inner ratchet 302 is in contact with the pawl 301 at all times during the process of rotating and moving to stop.

[0070] The remaining structures are the same as those of Example 1.

[0071] Example 3, reference Figure 8 and Fig. 9 , which is a third embodiment of the present invention, provides a safe operation protection device, which includes a fall arrester and a support unit 500.

[0072] The support unit 500 includes a column 501, a truss steel 502 rotatably arranged on the top of the column 501, and a guide rail 503 arranged on the truss steel 502; the column 501 is fixed on the ground, the truss steel 502 is a right triangle, and the vertical side is rotatably connected to the column 501, and the guide rail 503 is installed at the bottom of the other horizontal side. The truss steel 502 is also provided with a plurality of brackets to form a triangle to improve stability.

[0073] Among them, the fall arrester is slidably arranged on the guide rail 503; a pulley 504 is installed on the top of the installation box 100 in the fall arrester, and the pulley 504 cooperates with the guide rail 503. The pulley 504 can drive the fall arrester to slide in the guide rail 503. Furthermore, limit shock absorbers 505 are provided at both ends of the guide rail 503, which can play a buffering role when the pulley 504 slides to the end in the guide rail 503.

[0074] The cooperation between the rotating truss steel and the sliding fall arrester can increase the range of movement of the workers.

[0075] 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 preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A fall arrester, characterized in that: include, An installation box (100) having an accommodation space therein and an installation shaft (101) arranged in the accommodation space; A wire take-up unit (200), comprising a main wheel disc (201) rotatably arranged on the installation shaft (101), a spring sheet steel (202) arranged between the main wheel disc (201) and the installation box (100), and a steel wire rope (203) arranged on the main wheel disc (201), one end of the steel wire rope (203) passing through the bottom of the installation box (100); and, The buffer locking unit (300) comprises a ratchet (301) elastically arranged on the main wheel disc (201), an inner ratchet (302) threadedly arranged inside the installation box (100), and the ratchet (301) cooperates with the inner ratchet (302).

2. The fall arrester according to claim 1, characterized in that: The installation box (100) comprises a lower shell (102) and an upper shell (103), and the installation shaft (101) is installed in the lower shell (102); A first annular convex edge (104) is provided on the side wall of the lower shell (102); A thread is arranged between the inner ratchet (302) and the first annular protrusion (104), and the inner ratchet (302) is located on the inner side of the first annular protrusion (104).

3. The fall arrester according to claim 2, characterized in that: A second annular convex edge (105) is also provided on the side wall of the lower shell (102); The second annular protrusion (105) is located inside the first annular protrusion (104), and an elastic gasket (303) is provided on the second annular protrusion (105); One end of the elastic gasket (303) extends beyond the second annular protrusion (105) and cooperates with the inner ratchet (302).

4. The fall arrester according to claim 2 or 3, characterized in that: The inner ratchet (302) comprises an annular body (302a) and a plurality of limiting teeth (302b) arranged inside the annular body (302a); The outer side of the annular body (302a) is threadedly connected to the first annular protrusion (104); The limiting tooth (302b) cooperates with the ratchet pawl (301).

5. The fall arrester according to claim 4, characterized in that: There are a plurality of ratchet pawls (301), and one end of the ratchet pawl (301) is rotatably connected to the main wheel disc (201), and a tension spring (304) is provided between the middle of the ratchet pawl (301) and the main wheel disc (201); The main wheel disc (201) is provided with a limiting block (305) on the main wheel disc (201) that cooperates with the ratchet pawl (301); The other end of the pawl (301) cooperates with the limiting tooth (302b).

6. The fall arrester according to claim 1, characterized in that: The main wheel disc (201) is provided with a wire collection groove (201a) in the middle, and a groove (201b) on the side, and the ratchet (301) is installed on the other side of the main wheel disc (201); The steel wire rope (203) is wound in the wire take-up groove (201a); The spring sheet steel (202) is located in the groove (201b) and connected to the inner wall of the installation box (100).

7. The fall arrester according to claim 1, characterized in that: The steel wire rope (203) passes through the bottom of the installation box (100) and a hook (400) is installed at the end thereof; A rubber shock-absorbing block (401) is installed on the steel wire rope (203).

8. A safety operation protection device, characterized in that: The fall arrester according to claim 1 further comprises: A support unit (500) comprising a column (501), a truss steel (502) rotatably disposed on the top of the column (501), and a guide rail (503) disposed on the truss steel (502); The fall arrester is slidably arranged on the guide rail (503).

9. The safe operation protection device according to claim 8, characterized in that: A pulley (504) is mounted on the top of the installation box (100), and the pulley (504) cooperates with the guide rail (503).

10. The safe operation protection device according to claim 9, characterized in that: Limiting shock absorbers (505) are provided at both ends of the guide rail (503).

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