Hydraulic shearer cutter body

Abstract

The utility model relates to the technical field of fire rescue appliances, in particular to a hydraulic shearer cutter body which comprises a cutter holder, outer connecting frames are welded to the two ends of the bottom wall outside the cutter holder respectively, a rack is arranged in the cutter holder, and the rack is connected into a sliding groove in the inner wall of the cutter holder in a sliding mode through a sliding block. The two ends of the rack are connected with gears in a meshed mode respectively, the gears are rotationally connected to the inner wall of the tool apron, a butt joint block is welded to the top of the rack, an inner connecting frame is welded to the bottom of the rack, and the bottom of the inner connecting frame is connected with the top of one end of the blade through a compression spring. According to the improved cutter body, the structure that a rack and a gear are integrated in the cutter holder can improve more accurate position control and stability in the blade shearing process, and the stability in the blade shearing operation is further improved through two sets of elastic elements; and meanwhile, the structural form of the surface of the blade and the material adopted by the blade provide more reliable operation performance and control under the complex and severe fire-fighting site conditions.

Description

Technical Field

[0001] The utility model relates to the technical field of fire rescue equipment, in particular to a hydraulic shearing device blade. Background Art

[0002] Firefighting and rescue equipment refers to the general term for specialized tools, equipment and gear used in firefighting and various disaster and accident rescue operations. These tools usually have specific functions and are used for various tasks such as fire extinguishing, emergency rescue, rescue, demolition, smoke exhaust, lighting, communication, etc., to help firefighting and rescue personnel deal with complex situations at the scene of fire and other disaster accidents, improve rescue efficiency, and ensure the safety of personnel lives and production.

[0003] A shear is a tool specifically used for firefighting and rescue work. It mainly uses the powerful shear force generated by the hydraulic principle to cut hard objects such as metal and steel bars, so as to quickly open up rescue channels and remove obstacles in emergency situations such as fire, earthquake, and accidents.

[0004] In the process of realizing the utility model, the inventors found that the prior art has the following problems: 1. The surface structure of the side of the blade of some hydraulic shearing equipment that contacts the sheared object is too smooth, which may cause debris splashing, especially when shearing harder or thicker materials. It is easy to create safety hazards for operators and increase the risk of injury. At the same time, in emergency situations such as emergency rescue or fire fighting, it may affect the safety and rescue efficiency of the rescued persons; 2. Some shearing machines currently on the market that are realized by hydraulic structure, their blades only connect the hydraulic drive device to the blade body through a connecting rod, so that the tool can move linearly under the action of hydraulic pressure. Usually, vibration and unstable factors may occur during the shearing or compression process, especially when processing large or hard objects, causing the blade to be unstable, thereby affecting the shearing effect. Utility Model Content

[0005] The utility model aims to provide a hydraulic shearing tool body to solve the problems in the above background technology that when the tool body contacts the sheared object, the object may splash and cause hidden dangers, and the connection between the tool body and the hydraulic structure is relatively simple, which causes the tool to be unstable during use. To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hydraulic shearing tool body comprises a knife seat, two ends of the bottom wall outside the knife seat are respectively welded with external connecting frames, a rack is provided inside the knife seat, the rack is slidably connected to the slide groove of the inner wall of the knife seat through a slider, two ends of the rack are respectively meshed and connected with gears, the gear is rotatably connected to the inner wall of the knife seat, a docking block is welded on the top of the rack, an inner connecting frame is welded on the bottom of the rack, the bottom of the inner connecting frame is connected to the top of one end of the blade through a compression spring, the blade is located below the outside of the knife seat, the blades are rotatably connected between the external connecting frames through a pin shaft, connecting rods are respectively provided above the blades, one end of the connecting rod is rotatably connected to the blade through a pin shaft, and the other end of the connecting rod is rotatably connected to the inner connecting frame through a pin shaft, and tension springs are respectively provided at two ends of the outer wall of the knife seat, and one end of the tension spring is rotatably connected to the surface of the connecting rod through a pin shaft.

[0006] Further preferably, the rack forms a sliding and telescopic structure inside the knife seat, and the inner connecting frame forms a lifting structure through the rack, and a cross through hole consistent with the shape of the docking block is opened on the top of the knife seat, and the inner wall of the docking block is threaded.

[0007] Further preferably, the gears form a relative rotation structure through racks.

[0008] Further preferably, the connecting rods are in a structure where two of them fit in the inner connecting frame and one end of the blade and are symmetrically distributed about the vertical center line of the outer connecting frame, and the inner connecting frame forms a lifting structure between the connecting rods through the rack, and the inner connecting frame forms an elastic reset structure through the compression spring at its bottom.

[0009] Further preferably, the connecting rods are configured to move relative to each other via an internal connecting frame, and the blades are configured to open and close via the connecting rods.

[0010] Further preferably, the blades are made of alloy steel, and the surface of the blades is coated with a protective coating, and a serrated structure is provided on the surface of one side where the blades are in contact with each other.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] In the utility model, compared with the knife body directly linked by a rod, the structure of the rack and pinion integrated inside the knife seat can improve more precise position control and stability of the blade during shearing. The transmission structure of the rack and pinion can more accurately stop the blade at the desired position, thereby improving the accuracy and controllability of the operation, which is particularly important in emergency rescue operations that require precise cutting or maintaining a safe interval.

[0013] In the utility model, by adding a compression spring, the rack can push the bottom blade more smoothly when pushing the inner connecting frame to rise or fall, thereby reducing vibration and instability during the blade shearing process. By adding a tension spring, it can provide additional supporting force when the bottom blade opens and closes, which helps to balance the opening and closing force of the blade and make the shearing force more evenly distributed. The two groups of elastic elements are used to further improve the stability of the blade shearing operation. At the same time, the surface structural morphology of the blade and the material used provide more reliable operating performance and control under complex and harsh fire scene conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the main view folding structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the tool holder of the utility model;

[0017] Figure 4 This is a schematic diagram of the rack and gear distribution structure of the utility model;

[0018] Figure 5 This is a schematic diagram of the blade structure of the utility model.

[0019] In the figure: 1. knife holder; 2. external connecting frame; 3. rack; 4. gear; 5. docking block; 6. internal connecting frame; 7. compression spring; 8. blade; 9. connecting rod; 10. tension spring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figures 1 to 5The utility model provides a technical solution: a hydraulic shearing tool body comprises a knife seat 1, two ends of the bottom wall of the outside of the knife seat 1 are respectively welded with an external connecting frame 2, a rack 3 is provided inside the knife seat 1, the rack 3 is slidably connected to the slide groove of the inner wall of the knife seat 1 through a slider, two ends of the rack 3 are respectively meshed and connected with a gear 4, the gear 4 is rotatably connected to the inner wall of the knife seat 1, a docking block 5 is welded on the top of the rack 3, an internal connecting frame 6 is welded on the bottom of the rack 3, the bottom of the internal connecting frame 6 is connected to the top of one end of a blade 8 through a compression spring 7, the blade 8 is located below the outside of the knife seat 1, the blades 8 are rotatably connected to the external connecting frame 2 through a pin shaft, a connecting rod 9 is respectively provided above the blade 8, one end of the connecting rod 9 is rotatably connected to the blade 8 through a pin shaft, and the other end of the connecting rod 9 is rotatably connected to the inner connecting frame 6 through a pin shaft, and a tension spring 10 is respectively provided at both ends of the outer wall of the knife seat 1, and one end of the tension spring 10 is rotatably connected to the surface of the connecting rod 9 through a pin shaft.

[0022] In this embodiment, Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the rack 3 forms a sliding and telescopic structure inside the tool holder 1, and the internal connecting frame 6 forms a lifting structure through the rack 3, and a cross through hole consistent with the shape of the docking block 5 is opened on the top of the tool holder 1, and the inner wall of the docking block 5 is threaded; by adding the structure of the rack 3 and the gear 4 inside the tool holder 1, the bottom blade 8 is more stable in use, and the docking block 5 on the top of the rack 3 facilitates the tool body to the external hydraulic system.

[0023] In this embodiment, Figure 3 , Figure 4 and Figure 5 As shown, the gears 4 form a relative rotation structure through the rack 3; the hydraulic system is used to drive the rack 3, so that the rack 3 drives the gears 4 on both sides to rotate during operation. Compared with the knife body directly linked by the rod, the structure of integrating the rack 3 and the gear 4 inside the knife holder 1 can improve more precise position control and the stability of the blade 8 during the shearing process. This means that during the shearing process, the blade 8 can stop at the required position more accurately, thereby improving the accuracy and controllability of the operation, which is particularly important in emergency rescue operations that require precise cutting or safe interval maintenance. At the same time, the knife holder 1 is detachable, and when parts need to be replaced, they can be disassembled for appropriate maintenance.

[0024] In this embodiment, Figure 1 , Figure 2 and Figure 5As shown, the connecting rods 9 are in a structure where two of them fit in the inner connecting frame 6 and one end of the blade 8, and are symmetrically distributed about the vertical center line of the outer connecting frame 2. The inner connecting frame 6 forms a lifting structure between the connecting rods 9 through the rack 3, and the inner connecting frame 6 forms an elastic reset structure through the compression spring 7 at its bottom. When the inner connecting frame 6 descends through the hydraulically driven rack 3, the blade 8 at the bottom will be squeezed accordingly through one end of the connecting rod 9 to open and close the blade 8, and the structure of the compression spring 7 can provide support and buffering for it in the vertical direction, so that when the rack 3 pushes the inner connecting frame 6 to rise or fall, it can push the blade 8 at the bottom more smoothly, thereby reducing the vibration and instability of the blade 8 during the shearing process.

[0025] In this embodiment, Figure 1 , Figure 2 and Figure 5 As shown, the connecting rods 9 form relative motion through the inner connecting frame 6, and the blades 8 form an opening and closing structure through the connecting rod 9; the structure of the connecting rod 9 and the inner connecting frame 6 and the external connecting frame 2 cooperate with each other to achieve precise control of the blade 8, and the connecting rod 9 is connected to the knife seat 1 through a tension spring 10, which can provide additional supporting force when the bottom blade 8 opens and closes, helps to balance the opening and closing force of the blade 8, makes the shearing force distribution more even, and further improves the stability of the blade 8 during shearing operation.

[0026] In this embodiment, Figure 1 , Figure 2 and Figure 5 As shown, the blade 8 is made of alloy steel, and the surface of the blade 8 is coated with a protective coating, and a serrated structure is provided on the surface of one side where the blades 8 are in contact with each other; the blade 8 is made of 45crNiMov high-strength alloy steel, which has the characteristics of high strength and high toughness, and the surface is coated with an epoxy coating, a high-temperature resistant coating and a wear-resistant coating, so that it can cope with many complex and changeable environments that may be encountered in firefighting scenes, and the structure on the surface of the blade 8 helps to increase the grip and stability during shearing, so that the blade 8 can provide more reliable operating performance and control under complex and harsh firefighting scene conditions.

[0027] The use method and advantages of the utility model: When the hydraulic shearing tool body is used, the working process is as follows:

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, it should be noted that the knife holder 1 needs to be connected to the docking block 5 on the top of the knife holder 1 through an external hydraulic system when in use. When the device is connected to the hydraulic system, the docking block 5 driven by the hydraulic pressure will drive the rack 3 connected to it as a whole to slide inside the knife holder 1. The rack 3 is meshed and transmitted between the two gears 4 during the sliding process, providing stability during its operation. The gear 4 rotates relatively through the rack 3, and the inner connecting frame 6 is lowered through the rack 3 and then squeezed, and then the compression spring 7 is compressed and contracted, and the connecting rod 9 connected to one end of the inner connecting frame 6 is pressed down at the same time. Since one end of the connecting rod 9 is rotatably connected to one end of the blade 8 through a pin shaft, and The blades 8 are rotatably connected to the outer connecting frame 2 by means of a pin shaft. Since the outer connecting frame 2 is fixed to the bottom of the knife seat 1, the blade 8 is in an open and closed structure under a series of pressures. During the opening and closing process of the blade 8, the tension spring 10 on the surface of the connecting rod 9 provides additional supporting force for the blade 8, which helps to balance its opening and closing force. At the same time, after losing the hydraulic drive, the inner connecting frame 6 will be reset by the elastic structure of the compression spring 7 to allow the blade 8 to unfold again. The structural form of the surface of the blade 8 makes its bite force stronger, effectively avoiding the possibility of objects splashing. The elastic structure provides a certain buffer and support when the blade 8 is connected to the hydraulic system, thereby extending the service life of the equipment.

[0029] The above shows and describes the basic principle, main features and advantages of the utility model. Technical staff in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A hydraulic shearing tool body, comprising a tool holder (1), characterized in that: The two ends of the bottom wall outside the knife seat (1) are respectively welded with external connecting frames (2), the interior of the knife seat (1) is provided with a rack (3), the rack (3) is slidably connected to the slide groove of the inner wall of the knife seat (1) through a slider, the two ends of the rack (3) are respectively meshed with gears (4), the gear (4) is rotatably connected to the inner wall of the knife seat (1), the top of the rack (3) is welded with a docking block (5), the bottom of the rack (3) is welded with an internal connecting frame (6), the bottom of the internal connecting frame (6) is connected to the blade (8) through a compression spring (7). The top of the end is connected, the blade (8) is located below the outside of the blade seat (1), and the blades (8) are rotatably connected to the outer connecting frame (2) through a pin shaft. A connecting rod (9) is respectively provided above the blade (8), one end of the connecting rod (9) is rotatably connected to the blade (8) through a pin shaft, and the other end of the connecting rod (9) is rotatably connected to the inner connecting frame (6) through a pin shaft. Tension springs (10) are respectively provided at both ends of the outer wall of the blade seat (1), and one end of the tension spring (10) is rotatably connected to the surface of the connecting rod (9) through a pin shaft.

2. The hydraulic shearing tool body according to claim 1, characterized in that: The rack (3) forms a sliding and telescopic structure inside the knife seat (1), and the inner connecting frame (6) forms a lifting structure through the rack (3), and a cross through hole consistent with the shape of the docking block (5) is opened on the top of the knife seat (1), and the inner wall of the docking block (5) is threaded.

3. The hydraulic shearing tool body according to claim 1, characterized in that: The gears (4) form a relative rotation structure through the racks (3).

4. The hydraulic shearing tool body according to claim 1, characterized in that: The connecting rods (9) are in a structure in which two of them are attached to the inner connecting frame (6) and one end of the blade (8) and are symmetrically distributed about the vertical center line of the outer connecting frame (2). The inner connecting frame (6) forms a lifting structure between the connecting rods (9) through the rack (3), and the inner connecting frame (6) forms an elastic reset structure through the compression spring (7) at its bottom.

5. The hydraulic shearing tool body according to claim 1, characterized in that: The connecting rods (9) are configured to move relative to each other via the inner connecting frame (6), and the blades (8) are configured to have an opening and closing structure via the connecting rods (9).

6. The hydraulic shearing tool body according to claim 1, characterized in that: The blades (8) are made of alloy steel, and the surfaces of the blades (8) are coated with a protective coating, and a serrated structure is provided on the surfaces of one side where the blades (8) are in contact with each other.

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