Fire rescue forcible entry type hydraulic expander

Abstract

The utility model discloses a fire rescue forcible entry type hydraulic expander which comprises a protective sleeve, an oil cylinder is installed above the protective sleeve, a valve body assembly is installed at the upper end of the oil cylinder, a reversing handle is installed at the upper end of the valve body assembly, and a pipeline is installed above the reversing handle. The connecting block is arranged in the sheath, an inserting block is arranged at one end of the connecting block, and meshing teeth are arranged on one side of the inserting block; the clamp arm is arranged outside the inserting block, a tooth groove plate is arranged on one side of a mounting hole in the clamp arm, the tooth groove plate and the clamp arm are in sliding limiting, the tooth groove plate is clamped with the meshing teeth, a first adjusting bolt is rotationally installed on the inner side of the clamp arm, and a supporting block is installed at the end, located in the clamp arm, of the first adjusting bolt; and the supporting block is connected with the first adjusting bolt through a bearing, so that the problem that the clamp arm of the hydraulic expander cannot be quickly and flexibly replaced according to an actual rescue scene is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic expanders, in particular to a fire rescue and demolition type hydraulic expander. Background Art

[0002] Fire rescue hydraulic expander is an important rescue tool, widely used in various emergency rescue scenarios, especially in the rescue of disaster sites such as fire, earthquake, traffic accidents, etc., playing a pivotal role. Fire rescue hydraulic expander uses hydraulic technology to drive the expander's piston through high-pressure liquid to work. It has the characteristics of compact structure, strong power, and easy operation. It can be quickly deployed in a small space, effectively break down various obstacles, open up channels for rescuers, and rescue trapped people. It also has high safety performance. Its operating parts are carefully designed and easy to operate, reducing the possibility of misoperation. At the same time, the expander itself has strong durability and stability, and can work for a long time in harsh rescue environments.

[0003] For example, the Chinese authorized patent "A Hydraulic Expander" with announcement number CN214679687U includes a hydraulic mechanism, one end of which is connected to the expander body, the expander body includes an expansion arm and an expansion arm connecting sleeve, the expansion arm connecting sleeve is in the shape of an isosceles trapezoid, the top of the expansion arm connecting sleeve is connected to the hydraulic mechanism, and the bottom of the expansion arm connecting sleeve is connected to the expansion arm through a connecting device. The expansion arm includes a first expansion arm and a second expansion arm, the first expansion arm and the second expansion arm are symmetrically distributed with the central axis of the expansion arm connecting sleeve as the center, and a fastening device is provided at one end of the expansion arm away from the expansion arm connecting sleeve.

[0004] Although the above-mentioned existing technology can be applied to firefighting and disaster relief sites, since the clamp arms and expanders are mostly fixed structures, and clamp arms of different specifications need to be used in different rescue scenarios, the overall flexibility is poor, and therefore it does not meet existing needs. In this regard, we propose a firefighting and rescue demolition type hydraulic expander. Utility Model Content

[0005] The utility model aims to provide a fire rescue breaking and dismantling hydraulic expander to solve the problem that the hydraulic expander proposed in the above background technology cannot quickly and flexibly replace the clamp arm according to the actual rescue scene.

[0006] To achieve the above object, the utility model provides the following technical solutions: a fire rescue and demolition type hydraulic expander, comprising a sheath, an oil cylinder is installed above the sheath, a valve body assembly is installed at the upper end of the oil cylinder, a reversing handle is installed at the upper end of the valve body assembly, and a pipeline is installed above the reversing handle; and further comprising:

[0007] A connecting block is arranged inside the sheath, a plug-in block is arranged at one end of the connecting block, and the connecting block and the plug-in block are integrally cast, and a meshing tooth is arranged at one side of the plug-in block;

[0008] A clamp arm is arranged on the outside of the plug-in block, and the clamp arm and the plug-in block are slidably matched. A toothed plate is arranged on one side of the mounting hole in the clamp arm. The toothed plate and the clamp arm are limited in sliding, and the toothed plate is engaged with the meshing teeth. A first adjusting bolt is rotatably installed on the inner side of the clamp arm. One end of the first adjusting bolt extends to the inside of the clamp arm, and the first adjusting bolt is connected to the clamp arm by a thread. A support block is installed on one end of the first adjusting bolt located inside the clamp arm, and the support block and the first adjusting bolt are connected by a bearing.

[0009] Preferably, a telescopic rod is installed at the other end of the oil cylinder, a movable block is fixedly installed at one end of the telescopic rod, and the movable block is connected to one side of the connecting block through a rotating shaft, and a connecting rod is installed between the sleeve and the other side of the connecting block.

[0010] Preferably, a return spring is installed between the toothed plate and the mounting hole of the caliper arm, two return springs are provided, and two ends of the return spring are respectively fixed to the toothed plate and the caliper arm.

[0011] Preferably, the front and rear ends of the sheath are both provided with clamping mechanisms, a protective plate is installed outside the clamping mechanism, and the protective plate and the clamping mechanism are rotationally matched via a connecting shaft.

[0012] Preferably, a second adjusting bolt is installed on one side of the clamping mechanism, and the second adjusting bolt is threadedly connected to the clamping mechanism, a clamping block is rotatably installed on one end of the second adjusting bolt, and one side of the clamping block is in contact with the connecting shaft.

[0013] Preferably, shark teeth are provided on the outer wall of the clamp arm.

[0014] Preferably, the protective plate is a transparent acrylic plate.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model is provided with a flexible disassembly and assembly structure of the clamp arm. According to the actual rescue scene, the firefighters can select the corresponding clamp arm for installation. They only need to align the plug-in block at one end of the connecting block with the mounting hole of the clamp arm for plugging, so that the plug-in block extends to the inside of the clamp arm. Since the meshing teeth arranged on one side of the plug-in block are in an inclined structure, they can smoothly enter when contacting the toothed plate until they completely enter the inside of the mounting hole of the clamp arm. Then the firefighters use a tool to rotate the first adjusting bolt. Under the cooperation of the thread of the stud and the clamp arm, the support block is driven to move in the direction of the toothed plate, so as to push the toothed plate and make it engage with the meshing teeth on one side of the plug-in block, thereby ensuring the firmness of the installation of the plug-in block and the clamp arm. When disassembling, it is only necessary to rotate the first adjusting bolt in the opposite direction to make the support block gradually shrink and lose contact with the toothed plate. At this time, under the action of the reset spring, the toothed plate is driven to separate from the meshing teeth. At this time, the firefighters can easily pull out the plug-in block. The combined structure is not only convenient and easy to operate, but also effectively improves the flexibility of the hydraulic expander, and the installation firmness is high, providing guarantee for firefighting and rescue work.

[0017] 2. The utility model is provided with a movable protective plate on the outside of the protective sleeve. Under normal circumstances, the protective plate is folded upwards to facilitate the accurate placement of the clamp arm during rescue work. After the clamp arm is positioned, the firefighter flips the protective plate to cover the top of the clamp arm, and then rotates the second adjusting bolt. The friction between the stud and the clamping mechanism drives the clamp block to move to one side until one end of the connecting shaft is squeezed, so that the protective plate is fixed at this position to avoid injuries to personnel caused by splashing stones during the expansion work.

[0018] 3. The utility model provides shark teeth on the outer wall of the clamp arm. Due to the special shape and arrangement of the shark teeth, the contact surface can be tightly bitten when the clamp arm is working, thereby effectively preventing the expander from slipping during operation. Moreover, when the expander clamp arm is expanded under hydraulic drive, the shark teeth can cut or crush the clamped object. This allows the hydraulic expander to be used not only to expand space, but also to break obstacles, creating more rescue opportunities for rescuers. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the utility model;

[0020] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0021] Figure 3 For the utility model Figure 2 A partial enlarged view of the middle A area;

[0022] Figure 4 It is a schematic diagram of the connection structure between the clamping mechanism and the protective plate of the utility model.

[0023] In the figure: 1. sheath; 2. oil cylinder; 3. valve body assembly; 4. reversing handle; 5. pipeline; 6. clamp arm; 7. protective plate; 8. telescopic rod; 9. movable block; 10. connecting block; 11. plug-in block; 12. connecting rod; 13. shark tooth; 14. meshing tooth; 15. tooth groove plate; 16. reset spring; 17. first adjusting bolt; 18. support block; 19. clamping mechanism; 20. second adjusting bolt; 21. clamping block; 22. connecting shaft. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] See also Figure 1-4 The utility model provides an embodiment: a fire rescue and demolition type hydraulic expander, comprising a sheath 1, an oil cylinder 2 is installed above the sheath 1, a valve body assembly 3 is installed at the upper end of the oil cylinder 2, a reversing handle 4 is installed at the upper end of the valve body assembly 3, and a pipe 5 is installed above the reversing handle 4; and also includes:

[0026] A connecting block 10 is arranged inside the sheath 1, a plug-in block 11 is arranged at one end of the connecting block 10, and the connecting block 10 and the plug-in block 11 are integrally cast, and a meshing tooth 14 is arranged at one side of the plug-in block 11;

[0027] The clamp arm 6 is arranged on the outside of the plug-in block 11, and the clamp arm 6 and the plug-in block 11 are slidably matched. A toothed plate 15 is arranged on one side of the mounting hole in the clamp arm 6. The toothed plate 15 and the clamp arm 6 are slidably limited, and the toothed plate 15 is engaged with the meshing teeth 14. A first adjusting bolt 17 is rotatably installed on the inner side of the clamp arm 6. One end of the first adjusting bolt 17 extends to the inside of the clamp arm 6, and the first adjusting bolt 17 is connected to the clamp arm 6 by a thread. A support block 18 is installed at one end of the first adjusting bolt 17 located inside the clamp arm 6, and the support block 18 is connected to the first adjusting bolt 17 by a bearing.

[0028] According to the actual rescue scenario, firefighters can choose the corresponding clamp arm 6 for installation. They only need to align the plug-in block 11 at one end of the connecting block 10 with the mounting hole of the clamp arm 6 for plugging, so that the plug-in block 11 extends to the inside of the clamp arm 6. Since the meshing teeth 14 arranged on one side of the plug-in block 11 are in an inclined structure, they can enter smoothly when contacting the tooth plate 15 until they completely enter the inside of the mounting hole of the clamp arm 6. Then the firefighters use tools to rotate the first adjusting bolt 17. With the thread cooperation between its stud and the clamp arm 6, the support block 18 is driven to move toward the direction of the tooth plate 15, thereby pushing the tooth plate 15, so that it is engaged with the meshing teeth 14 on one side of the plug-in block 11, thereby ensuring the firmness of the installation of the plug-in block 11 and the clamp arm 6.

[0029] Please refer to the figure, a telescopic rod 8 is installed at the other end of the oil cylinder 2, a movable block 9 is fixedly installed at one end of the telescopic rod 8, and the movable block 9 is connected to one side of the connecting block 10 through a rotating shaft, and a connecting rod 12 is installed between the sheath 1 and the other side of the connecting block 10. By starting the oil cylinder 2, the telescopic rod 8 can be driven to extend, and the movable block 9 is driven to move by the telescopic rod 8, so that the two clamp arms 6 can be rotated and opened to realize the function of expansion and demolition.

[0030] Please refer to the figure. A return spring 16 is installed between the mounting hole of the toothed plate 15 and the clamp arm 6. Two return springs 16 are provided, and the two ends of the return spring 16 are respectively fixed to the toothed plate 15 and the clamp arm 6. When disassembling, it is only necessary to reversely rotate the first adjusting bolt 17 to make the support block 18 gradually shrink and lose contact with the toothed plate 15. At this time, the toothed plate 15 is separated from the meshing teeth 14 under the action of the return spring 16, and the firefighters can easily pull out the plug-in block 11.

[0031] Please refer to the figure, the front and rear ends of the sheath 1 are both provided with a clamping mechanism 19, the outside of the clamping mechanism 19 is installed with a protective plate 7, and the protective plate 7 and the clamping mechanism 19 are rotatably matched through a connecting shaft 22. The protective plate 7 can prevent stones from splashing and causing harm to personnel during the expansion work.

[0032] Please refer to the figure, a second adjusting bolt 20 is installed on one side of the clamping mechanism 19, and the second adjusting bolt 20 is connected to the clamping mechanism 19 through a thread, a clamping block 21 is rotatably installed on one end of the second adjusting bolt 20, and one side of the clamping block 21 is in contact with the connecting shaft 22, so as to realize the tightening adjustment of the protective plate 7.

[0033] Please refer to the figure, shark teeth 13 are arranged on the outer wall of the clamp arm 6 .

[0034] Please refer to the figure, the protection plate 7 is a transparent acrylic plate, which is convenient for observation during the expansion process.

[0035] Working principle: Under normal circumstances, the protective plate 7 is folded upward to facilitate the precise placement of the clamp arm during rescue work. After the clamp arm 6 is positioned, the firefighter flips the protective plate 7 to cover the top of the clamp arm 6, and then turns the second adjusting bolt 20. The friction between the stud and the clamping mechanism 19 drives the clamp block 21 to move to one side until one end of the connecting shaft 22 is squeezed, thereby fixing the protective plate 7 at this position.

[0036] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A fire rescue and demolition type hydraulic expander, comprising a sheath (1), an oil cylinder (2) mounted above the sheath (1), a valve body assembly (3) mounted at the upper end of the oil cylinder (2), a reversing handle (4) mounted at the upper end of the valve body assembly (3), and a pipe (5) mounted above the reversing handle (4); Features: Also includes: A connecting block (10) is arranged inside the sheath (1), a plug-in block (11) is arranged at one end of the connecting block (10), the connecting block (10) and the plug-in block (11) are integrally cast, and a meshing tooth (14) is arranged on one side of the plug-in block (11); A clamp arm (6) is arranged outside the plug-in block (11), and the clamp arm (6) and the plug-in block (11) are slidably matched. A toothed plate (15) is arranged on one side of the mounting hole in the clamp arm (6), the toothed plate (15) and the clamp arm (6) are slidably limited, and the toothed plate (15) is engaged with the meshing teeth (14). A first adjusting bolt (17) is rotatably mounted on the inner side of the clamp arm (6), one end of the first adjusting bolt (17) extends into the interior of the clamp arm (6), and the first adjusting bolt (17) is connected to the clamp arm (6) by a thread, and a support block (18) is mounted on one end of the first adjusting bolt (17) located inside the clamp arm (6), and the support block (18) and the first adjusting bolt (17) are connected by a bearing.

2. A fire rescue and demolition hydraulic expander according to claim 1, characterized in that: A telescopic rod (8) is installed at the other end of the oil cylinder (2), a movable block (9) is fixedly installed at one end of the telescopic rod (8), and the movable block (9) is connected to one side of the connecting block (10) via a rotating shaft, and a connecting rod (12) is installed between the sleeve (1) and the other side of the connecting block (10).

3. The fire rescue and demolition hydraulic expander according to claim 1, characterized in that: A return spring (16) is installed between the toothed plate (15) and the mounting hole of the clamp arm (6), two return springs (16) are provided, and two ends of the return spring (16) are respectively fixed to the toothed plate (15) and the clamp arm (6).

4. The fire rescue and demolition hydraulic expander according to claim 1, characterized in that: The front and rear ends of the protective sleeve (1) are both provided with a clamping mechanism (19), a protective plate (7) is installed outside the clamping mechanism (19), and the protective plate (7) and the clamping mechanism (19) are rotatably matched via a connecting shaft (22).

5. A fire rescue and demolition hydraulic expander according to claim 4, characterized in that: A second adjusting bolt (20) is installed on one side of the clamping mechanism (19), and the second adjusting bolt (20) is threadedly connected to the clamping mechanism (19); a clamping block (21) is rotatably installed on one end of the second adjusting bolt (20), and one side of the clamping block (21) is in contact with the connecting shaft (22).

6. The fire rescue and demolition hydraulic expander according to claim 1, characterized in that: Shark teeth (13) are provided on the outer wall of the clamp arm (6).

7. The fire rescue and demolition hydraulic expander according to claim 4, characterized in that: The protective plate (7) is a transparent acrylic plate.

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