Multifunctional fire-fighting door prying tool

Abstract

The utility model discloses a multifunctional fire-fighting door prizing tool, which comprises a crowbar main body, a screw cap and a claw knocking head, the screw cap is in threaded connection with the crowbar main body, the claw knocking head is fixed on the screw cap, one end of the crowbar main body far away from the screw cap is provided with an extension connecting mechanism, the extension connecting mechanism is provided with a fixing ring, and the fixing ring is fixed on the screw cap. The extension shearing mechanism is arranged in the crowbar body, the extension connecting mechanism comprises a limiting rotating ring, a fixed key groove and a connecting rotating ring, the end, away from the crowbar body, of the connecting rotating ring is in threaded connection with an extension rod, a fixed insertion block is fixed to the extension rod, and the fixed insertion block is connected into the fixed key groove in an inserted and pulled mode. The extension shearing mechanism comprises a through groove, an extension rod, a limiting block, a driving head and scissors. The utility model belongs to the technical field of fire-fighting tools, and particularly relates to a multifunctional fire-fighting door prying tool.

Description

Technical Field

[0001] The utility model belongs to the technical field of fire fighting tools, in particular to a multifunctional fire fighting door prying tool. Background Art

[0002] Door prying tools include crowbars, which use the principle of leverage to lift and displace heavy objects from the ground. They are widely used in various fields of life. However, when used in the field of firefighting, traditional crowbars have relatively simple functions and cannot meet the special circumstances of firefighting emergencies. Therefore, with the innovation of technology, people have invented multifunctional firefighting door prying tools.

[0003] Existing multifunctional fire-fighting door-prying tools, such as a multifunctional fire-fighting crowbar disclosed in application number CN202021040597.X, are provided with a first prying head and a second prying head, and the second prying head is composed of a square plate and a trapezoidal plate, which can be used for fire-fighting and rescue operations such as prying doors and breaking open car doors. In addition, a cone thorn is installed at one end of the square plate, which can be used to puncture and break open doors and windows, thereby improving the functional diversity of use.

[0004] However, in actual use, the crowbar in the prior art has a fixed structure and cannot be flexibly adjusted in length according to needs. It is not only inconvenient to carry, but also cannot provide a sufficiently long force arm when prying heavy objects, such as relatively thick door panels, resulting in the problem of being unable to pry. The flexibility of use is low. In particular, the fixed structure can only achieve relatively few functions and can only achieve strong demolition actions. In the face of special circumstances, such as when a relatively thin rope is wrapped and needs to be cut, it is difficult to quickly achieve cutting using the sharper end of the knocking head. For this reason, we propose a multifunctional fire-fighting door prying tool to solve the above problems. Utility Model Content

[0005] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a multifunctional fire-fighting door prying tool, which effectively solves the problem that the existing multifunctional fire-fighting crowbar has a fixed structure and is inconvenient to change the length according to actual use requirements, resulting in inconvenience in carrying and a small scope of application. It also solves the problem that it can only be used for forceful demolition and is inconvenient to cut delicate objects such as ropes.

[0006] The technical solution adopted by the utility model is as follows: the utility model proposes a multifunctional fire-fighting door prying tool, including a crowbar body, a nut and a horn knocking head, the nut is threadedly connected to the crowbar body, the horn knocking head is fixed on the nut, an extension connection mechanism is provided on the end of the crowbar body away from the nut, a fixing ring is provided on the extension connection mechanism, and an expansion shear mechanism is provided in the crowbar body.

[0007] As an improvement of the present solution, the extension connection mechanism includes a limit swivel, a fixed key slot and a connecting swivel, the limit swivel is fixed on the side wall of the crowbar body, the fixed key slot is provided at the end of the crowbar body, the connecting swivel is rotatably connected to the limit swivel, an end of the connecting swivel away from the crowbar body is threadedly connected to an extension rod, a fixed plug block is fixed on the extension rod, and the fixed plug block is pluggably connected to the fixed key slot.

[0008] As an improvement of the present solution, a screw is fixed to the end of the extension rod, the fixing ring is plugged and connected to the screw, a fixing baffle ring is threadedly connected to the screw, and the fixing baffle ring is tightly arranged against the fixing ring, a pick head is fixed to the side wall of the fixing ring, and a hoe is fixed to the side of the fixing ring that is symmetrical to the pick head.

[0009] As an improvement of the present scheme, the extended shearing mechanism comprises a through slot, an extension rod, a limit block, a driving head and a pair of scissors, the through slot being arranged on the side wall of the crowbar body, the extension rod being pluggably connected to the crowbar body, the limit block being fixed to the end of the extension rod and being arranged in the crowbar body, the driving head being rotatably connected to the limit block and being threadedly connected to the inner wall of the crowbar body, and the scissors being rotatably connected to the end of the extension rod.

[0010] As an improvement of the present scheme, a slider is slidably connected inside the extending rod, a guide block is fixed on the inner wall of the extending rod, a pull rod is fixed on the slider, the other end of the pull rod passes through the guide block and is rotatably connected to the handle of the scissors, an anti-slide block is fixed on the side wall of the slider, the anti-slide block is slidably connected to the side wall of the extending rod and passes through the extending rod, and a reset spring is provided between the slider and the top inner side of the extending rod.

[0011] As an improvement of the present solution, the limit block is arranged between the driving head and the extension rod, the extension rod is coaxially arranged with the crowbar body, and the crowbar body and the extension rod are coaxially arranged.

[0012] As an improvement of the present solution, the limit swivel ring is provided in the form of a circular ring with a U-shaped cross section, and the crowbar body and the extension rod are both provided in the form of a hollow cylinder.

[0013] As an improvement of this solution, the limit block is arranged in a T shape, and the fixing ring is arranged in an O shape.

[0014] The beneficial effects achieved by the utility model using the above structure are as follows:

[0015] 1. It is equipped with an extended connection mechanism. Through the detachable extension rod, the entire knocking tool can be split into two parts for easy carrying, and the applicable scope of the knocking tool can be increased. When used separately, it can be used with a pickaxe, a hoe and a detachable sheep horn knocking head to show different functions, which increases practicality;

[0016] 2. An extended shearing mechanism is provided inside the main body of the crowbar. By removing the nut that fixes the horn knocking head, the extension rod with scissors can be extended, so that it can quickly cut thin objects such as ropes, further expanding the versatility of the knocking tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a multifunctional fire-fighting door prying tool proposed by the utility model from a first-person perspective;

[0018] Figure 2 This is a schematic diagram of the overall structure of a multifunctional fire-fighting door prying tool proposed by the utility model from a second perspective;

[0019] Figure 3 A component diagram of an expanded shear mechanism for this embodiment;

[0020] Figure 4 The utility model is a cross-sectional view of a multifunctional fire-fighting door prying tool.

[0021] Among them, 1. crowbar body; 2. nut; 3. ram horn knocking head; 4. extension connection mechanism; 5. fixing ring; 6. extended shearing mechanism; 7. limit swivel; 8. fixed keyway; 9. connecting swivel; 10. extension rod; 11. fixed plug; 12. screw; 13. fixed retaining ring; 14. pickaxe head; 15. hoe; 16. through slot; 17. extension rod; 18. limit block; 19. drive head; 20. scissors; 21. slider; 22. guide block; 23. pull rod; 24. anti-sliding block; 25. reset spring.

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0024] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the utility model proposes a multifunctional fire-fighting door prying tool, comprising a crowbar body 1, a nut 2 and a horn knocking head 3, wherein the nut 2 is threadedly connected to the crowbar body 1, the horn knocking head 3 is fixed to the nut 2, an extension connection mechanism 4 is provided on the end of the crowbar body 1 away from the nut 2, a fixing ring 5 is provided on the extension connection mechanism 4, and an extension shear mechanism 6 is provided in the crowbar body 1.

[0025] In order to adjust the length of the door prying tool and diversify its usage functions, the extension connection mechanism 4 includes a limiting swivel 7, a fixed keyway 8 and a connecting swivel 9. The limiting swivel 7 is fixed on the side wall of the crowbar body 1, and the fixed keyway 8 is arranged at the end of the crowbar body 1. The connecting swivel 9 is rotatably connected to the limiting swivel 7. An end of the connecting swivel 9 away from the crowbar body 1 is threadedly connected to an extension rod 10, and a fixed plug block 11 is fixed on the extension rod 10, and the fixed plug block 11 is plugged and connected in the fixed keyway 8; a screw 12 is fixed at the end of the extension rod 10, and the fixing ring 5 is plugged and connected to the screw 12, and a fixed baffle ring 13 is threadedly connected to the screw 12, and the fixed baffle ring 13 is tightly arranged against the fixing ring 5, a pickaxe 14 is fixed on the side wall of the fixing ring 5, and a hoe 15 is fixed on the side of the fixing ring 5 symmetrical to the pickaxe 14.

[0026] In order to realize the function of quickly cutting thin ropes and other items, the extended shearing mechanism 6 includes a through slot 16, an extension rod 17, a limit block 18, a drive head 19 and a pair of scissors 20. The through slot 16 is arranged on the side wall of the crowbar body 1, the extension rod 17 is plugged and connected to the crowbar body 1, the limit block 18 is fixed to the end of the extension rod 17 and is arranged in the crowbar body 1, the drive head 19 is rotatably connected to the limit block 18 and is threadedly connected to the inner wall of the crowbar body 1, and the scissors 20 are rotatably connected to the crowbar body 1. At the end of the extending rod 17; a slider 21 is slidably connected inside the extending rod 17, a guide block 22 is fixed on the inner wall of the extending rod 17, a pull rod 23 is fixed on the slider 21, the other end of the pull rod 23 passes through the guide block 22 and is rotatably connected to the handle of the scissors 20, an anti-slider 24 is fixed on the side wall of the slider 21, the anti-slider 24 is slidably connected to the side wall of the extending rod 17 and passes through the extending rod 17, and a return spring 25 is provided between the slider 21 and the inner top of the extending rod 17.

[0027] The limit block 18 is arranged between the driving head 19 and the extending rod 17, the extending rod 17 is coaxially arranged with the crowbar body 1, and the crowbar body 1 and the extension rod 10 are coaxially arranged; the limit swivel 7 is a circular ring with a U-shaped cross-section, and the crowbar body 1 and the extending rod 17 are both hollow cylindrical arrangements; the limit block 18 is T-shaped, and the fixing ring 5 is O-shaped.

[0028] When in use, the extension rod 10 is inserted into the fixed key slot 8 through the fixed plug block 11, and the extension connection mechanism 4 is rotated to fix the extension rod 10 and the crowbar body 1, so as to achieve extended use. The door panel can be pried with the horn knocking head 3, and the door panel can be broken with the pickaxe head 14 and the hoe 15 at the other end. When it is necessary to cut thin wires, etc., it is only necessary to unscrew the nut 2 from the crowbar body 1, rotate the drive head 19 to drive the limit block 18 to extend outward along the axis of the crowbar body 1, until the scissors 20 extend out of the crowbar body 1, and then, under the action of the return spring 25, the scissors 20 are pushed out. The movable slider 21 drives the pull rod 23 to extend, so that the scissors 20 are opened, and then the anti-sliding block 24 is pinched through the through groove 16, and the slider 21 is pulled toward the side of the limit block 18, so that it drives the pull rod 23 to retract into the extension rod 17. The above actions can be repeated to complete the shearing. When storing, it is only necessary to move the slider 21 toward the limit block 18 to drive the scissors 20 to retract into the extension rod 17. When the scissors 20 contact the inner wall of the extension rod 17, they are squeezed toward the middle to achieve the storage of the extension rod 17, and then the nut 2 is screwed onto the crowbar body 1. The above is the use process of the entire multi-functional fire-fighting door prying tool.

[0029] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A multifunctional fire-fighting door prying tool, comprising a crowbar body (1), a nut (2) and a ram's horn knocking head (3), wherein the nut (2) is threadedly connected to the crowbar body (1), and the ram's horn knocking head (3) is fixed to the nut (2), characterized in that: An extension connection mechanism (4) is provided on one end of the crowbar body (1) away from the nut (2), a fixing ring (5) is provided on the extension connection mechanism (4), and an expansion shear mechanism (6) is provided inside the crowbar body (1).

2. A multifunctional fire-fighting door prying tool according to claim 1, characterized in that: The extension connection mechanism (4) comprises a limit swivel (7), a fixed keyway (8) and a connection swivel (9); the limit swivel (7) is fixed on the side wall of the crowbar body (1); the fixed keyway (8) is arranged at the end of the crowbar body (1); the connection swivel (9) is rotatably connected to the limit swivel (7); an end of the connection swivel (9) away from the crowbar body (1) is threadedly connected to an extension rod (10); a fixed plug block (11) is fixed on the extension rod (10), and the fixed plug block (11) is pluggably connected to the fixed keyway (8).

3. A multifunctional fire-fighting door prying tool according to claim 2, characterized in that: A screw rod (12) is fixed to the end of the extension rod (10), the fixing ring (5) is plug-in connected to the screw rod (12), a fixing baffle ring (13) is threadedly connected to the screw rod (12), and the fixing baffle ring (13) is tightly arranged with the fixing ring (5), a pick head (14) is fixed to the side wall of the fixing ring (5), and a hoe head (15) is fixed to the side of the fixing ring (5) symmetrical to the pick head (14).

4. The multifunctional fire-fighting door prying tool according to claim 3, characterized in that: The extended shearing mechanism (6) comprises a through slot (16), an extension rod (17), a limit block (18), a driving head (19) and a pair of scissors (20); the through slot (16) is arranged on the side wall of the crowbar body (1); the extension rod (17) is pluggably connected to the crowbar body (1); the limit block (18) is fixed to the end of the extension rod (17) and is arranged in the crowbar body (1); the driving head (19) is rotatably connected to the limit block (18) and is threadedly connected to the inner wall of the crowbar body (1); and the scissors (20) are rotatably connected to the end of the extension rod (17).

5. The multifunctional fire-fighting door prying tool according to claim 4, characterized in that: A slider (21) is slidably connected inside the extension rod (17), a guide block (22) is fixed on the inner wall of the extension rod (17), a pull rod (23) is fixed on the slider (21), the other end of the pull rod (23) passes through the guide block (22) and is rotatably connected to the handle of the scissors (20), an anti-sliding block (24) is fixed on the side wall of the slider (21), the anti-sliding block (24) is slidably connected to the side wall of the extension rod (17) and passes through the extension rod (17), and a reset spring (25) is provided between the slider (21) and the inner top of the extension rod (17).

6. The multifunctional fire-fighting door prying tool according to claim 5, characterized in that: The limit block (18) is arranged between the driving head (19) and the extension rod (17); the extension rod (17) and the crowbar body (1) are coaxially arranged; and the crowbar body (1) and the extension rod (10) are coaxially arranged.

7. The multifunctional fire-fighting door prying tool according to claim 6, characterized in that: The limit rotating ring (7) is arranged in the form of a circular ring with a U-shaped cross section, and the crowbar body (1) and the extension rod (17) are arranged in the form of hollow cylinders.

8. The multifunctional fire-fighting door prying tool according to claim 7, characterized in that: The limit block (18) is arranged in a T shape, and the fixing ring (5) is arranged in an O shape.

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