Novel hydraulic shearing and expanding pliers

Abstract

The utility model relates to the technical field of shearing and expanding pliers, and discloses novel hydraulic shearing and expanding pliers which comprise a barrel, two limiting plates are fixedly installed at the front end of the barrel and fixedly connected, two limiting arc grooves are symmetrically formed in each limiting plate, and the limiting arc grooves are fixedly connected with the barrel. A limiting sliding groove is formed between the two limiting arc grooves in each limiting plate, a shearing and expanding sliding block is arranged between the two limiting plates, a second connecting bolt is fixedly inserted into the shearing and expanding sliding block, and a driving oil cylinder drives the second connecting bolt to move up and down along the limiting sliding groove through the shearing and expanding sliding block. The second connecting bolt drives the first connecting bolt to slide along the limiting arc groove through the connecting arm, the first connecting bolt drives the shearing and expanding clamp arms to rotate around the main pin, and therefore the two shearing and expanding clamp arms are expanded through expanding blocks arranged on the shearing and expanding clamp arms or sheared through shearing blades arranged on the shearing and expanding clamp arms, and the shearing and expanding stability of the device is effectively improved; therefore, the safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting and spreading pliers, in particular to a new type of hydraulic cutting and spreading pliers. Background Technique

[0002] Hydraulic cutting and spreading pliers are generally used in traffic rescue, emergency departments, fire fighting, and are used in special occasion emergency rescue technical fields such as in the case of fires, earthquakes, car accidents, and assault rescue, for quickly demolishing obstacles such as anti-theft doors and windows, window bars, etc. Its working principle is that the opening and closing of the blades depend on the direction of the power applied to the piston. When the piston push rod rises, the blades open, and when the piston push rod descends, the blades begin to close towards the object and cut it. The advantages of hydraulic cutting and spreading pliers are high energy and fast working efficiency.

[0003] After retrieval, the patent with the publication number CN219484370U discloses a new type of hydraulic cutting and spreading pliers, including a main plier box. One side of the main plier box is fixedly provided with a box body ear plate. Both sides of the end of the main plier box far away from the box body ear plate are fixedly provided with support arms. Fixedly provided with a pin shaft at the end of the two support arms far away from the main plier box. The two support arms are rotatably provided with an upper cutting and spreading plier arm and a lower cutting and spreading plier arm through the pin shaft.

[0004] For this new type of hydraulic cutting and spreading pliers of this patent, although it has a large output energy, fast working efficiency, stable connection interface, high working efficiency and is not prone to failure, and has a small size and is convenient to carry, there is a lack of a limiting mechanism during the working process of the plier arms, which reduces the stability of the device during use.

[0005] Therefore, we propose a new type of hydraulic cutting and spreading pliers. Content of the Utility Model

[0006] The utility model mainly solves the technical problems existing in the above-mentioned prior art, and provides a new type of hydraulic cutting and spreading pliers.

[0007] To achieve the above object, the present utility model adopts the following technical solutions. A new type of hydraulic cutting and expanding pliers includes a cylinder body. Two limiting plates are fixedly installed at the front end of the cylinder body, and the two limiting plates are fixedly connected. Two limiting arc grooves are symmetrically formed on each limiting plate. A limiting sliding groove is formed between the two limiting arc grooves on each limiting plate. A cutting and expanding slider is arranged between the two limiting plates. A second connecting bolt is fixedly inserted on the cutting and expanding slider. The front and rear ends of the second connecting bolt are respectively slidably installed in the front and rear limiting sliding grooves. The cutting and expanding slider is rotatably installed with two connecting arms through the second connecting bolt. A main pin is also arranged between the two limiting plates. The front and rear ends of the main pin are respectively fixedly installed on the front and rear limiting plates. Two cutting and expanding plier arms are rotatably installed on the main pin. The bottom ends of the two cutting and expanding plier arms are respectively fixedly installed with first connecting bolts. The front and rear ends of each first connecting bolt are respectively slidably installed in the front and rear limiting sliding grooves. The two cutting and expanding plier arms are respectively rotatably connected through the first connecting bolts and the two connecting arms.

[0008] Further, an expanding block is fixedly installed at the top end of each cutting and expanding plier arm through a rivet. Shearing blades are fixedly installed on one side where the two cutting and expanding plier arms are close to each other through rivets.

[0009] Further, a driving oil cylinder is fixedly installed inside the cylinder body. The telescopic end of the top end of the driving oil cylinder is fixedly installed at the bottom of the cutting and expanding slider.

[0010] Further, a pipe connection sleeve is fixedly sleeved at the bottom of the cylinder body. An oil inlet is fixedly inserted at the left end of the pipe connection sleeve, and an oil outlet is fixedly inserted at the right end of the pipe connection sleeve.

[0011] Further, a manual control valve is rotatably inserted at the bottom end of the pipe connection sleeve. The oil outlet and the oil inlet are both internally connected to the driving oil cylinder through the manual control valve.

[0012] Further, an auxiliary handle is fixedly sleeved on the cylinder body, and an anti-slip sleeve is fixedly sleeved on the auxiliary handle.

[0013] Beneficial effects

[0014] The present utility model provides a new type of hydraulic cutting and expanding pliers, which has the following beneficial effects:

[0015] 1. When using this new type of hydraulic cutting and spreading pliers, rotate the hand control valve to control the hydraulic oil to be discharged or enter the driving oil cylinder through the oil outlet and the oil inlet, driving the telescopic end of the driving oil cylinder to move up and down. The driving oil cylinder drives the second connecting bolt to move up and down along the limit sliding groove through the cutting and spreading slider. The second connecting bolt drives the first connecting bolt to slide along the limit arc groove through the connecting arm, and the first connecting bolt drives the cutting and spreading pliers arm to rotate around the main pin, so that the two cutting and spreading pliers arms are expanded by the expansion blocks arranged thereon, or cut by the cutting blades arranged thereon, effectively improving the stability of the cutting and spreading of the device, and further improving the safety.

[0016] 2. This new type of hydraulic cutting and spreading pliers rivets the expansion blocks for spreading and the cutting blades for cutting on the cutting and spreading pliers arms respectively, which is convenient for quickly replacing the expansion blocks or cutting blades after they are damaged, without removing the cutting and spreading pliers arms from between the two limit plates, thus achieving the effect of improving work efficiency and at the same time increasing the service life of the device.

[0017] 3. This new type of hydraulic cutting and spreading pliers rivets the expansion blocks and the cutting blades on the cutting and spreading pliers arms, which is convenient for replacing the expansion blocks or cutting blades of different specifications according to the spreading and cutting targets, thus achieving the effect of improving the applicability of the device. By setting an auxiliary handle with an anti-slip sleeve on the cylinder body, it is convenient for the staff to use, effectively improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The structures, ratios, sizes, etc. shown in this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present utility model, so they do not have a substantial technical meaning.

[0019] Figure 1 is a schematic diagram of the overall structure;

[0020] Figure 2 is a schematic diagram of the disassembled partial structure of the cutting and spreading pliers arm;

[0021] Figure 3 is a schematic diagram of the partial structure of the limit plate;

[0022] Figure 4 is a schematic diagram of the partial structure of the cylinder body.

[0023] LEGEND DESCRIPTION:

[0024] 1. Cylinder body; 2. Cutting and spreading pliers arm; 3. Expansion block; 4. Cutting blade; 5. Limit plate; 6. Auxiliary handle; 7. Hand control valve; 8. Driving oil cylinder; 9. Limit sliding groove; 10. Limit arc groove; 11. First connecting bolt; 12. Connecting arm; 13. Second connecting bolt; 14. Cutting and spreading slider; 15. Anti-slip sleeve; 16. Oil outlet; 17. Oil inlet; 18. Main pin; 19. Pipe joint sleeve. Detailed implementation manners

[0025] To make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below in conjunction with the detailed implementation manners and with reference to the accompanying drawings. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present utility model. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present utility model.

[0026] In the description of the utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0027] In the description of the utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, such as welding, riveting, bonding, etc., or a detachable connection, such as screw connection, key connection, pin connection, etc., or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] A new type of hydraulic cutting and spreading tongs, as Figures 1-4As shown in the figure, it includes a cylinder body 1. At the front end of the cylinder body 1, two limit plates 5 are fixedly installed. The two limit plates 5 are fixedly connected. On each limit plate 5, two limit arc grooves 10 are symmetrically opened. Between the two limit arc grooves 10 on each limit plate 5, a limit sliding groove 9 is opened. Between the two limit plates 5, a shear expansion slider 14 is arranged. A second connecting bolt 13 is fixedly inserted on the shear expansion slider 14. The front and rear ends of the second connecting bolt 13 are respectively slidably installed in the front and rear limit sliding grooves 9. The shear expansion slider 14 is rotatably installed with two connecting arms 12 through the second connecting bolt 13. Between the two limit plates 5, a main pin 18 is also arranged. The front and rear ends of the main pin 18 are respectively fixedly installed on the front and rear limit plates 5. Two shear expansion pliers arms 2 are rotatably installed on the main pin 18. The bottom ends of the two shear expansion pliers arms 2 are respectively fixedly installed with first connecting bolts 11. The front and rear ends of each first connecting bolt 11 are respectively slidably installed in the front and rear limit sliding grooves 9. The two shear expansion pliers arms 2 are respectively rotatably connected through the first connecting bolts 11 and the two connecting arms 12. At the top end of each shear expansion pliers arm 2, an expansion block 3 is fixedly installed through a rivet. On one side where the two shear expansion pliers arms 2 are close to each other, a shear blade 4 is fixedly installed through a rivet. A driving oil cylinder 8 is fixedly installed inside the cylinder body 1. The telescopic end at the top of the driving oil cylinder 8 is fixedly installed at the bottom of the shear expansion slider 14. A pipe joint sleeve 19 is fixedly sleeved at the bottom of the cylinder body 1. An oil inlet 17 is fixedly inserted at the left end of the pipe joint sleeve 19. An oil outlet 16 is fixedly inserted at the right end of the pipe joint sleeve 19. A manual control valve 7 is rotatably inserted at the bottom end of the pipe joint sleeve 19. The oil outlet 16 and the oil inlet 17 are both internally connected to the driving oil cylinder 8 through the manual control valve 7. An auxiliary handle 6 is fixedly sleeved on the cylinder body 1. An anti-slip sleeve 15 is fixedly sleeved on the auxiliary handle 6.

[0029] The working principle of the present utility model: When the device is in use, rotate the manual control valve 7 to control the hydraulic oil to be discharged or enter the driving oil cylinder 8 through the oil outlet 16 and the oil inlet 17, driving the telescopic end of the driving oil cylinder 8 to move up and down. The driving oil cylinder 8 drives the second connecting bolt 13 to move up and down along the limit sliding groove 9 through the shear expansion slider 14. The second connecting bolt 13 drives the first connecting bolt 11 to slide along the limit arc groove 10 through the connecting arm 12. The first connecting bolt 11 drives the shear expansion pliers arm 2 to rotate around the main pin 18, so that the two shear expansion pliers arms 2 are expanded by the expansion blocks 3 arranged thereon, or sheared by the shear blades 4 arranged thereon, effectively improving the stability of the shear expansion of the device, and further improving the safety.

[0030] By riveting an expansion block 3 for expansion and a shear blade 4 for shearing on the shear expansion pliers arm 2 respectively, it is convenient to quickly replace the expansion block 3 or the shear blade 4 after damage, without removing the shear expansion pliers arm 2 from between the two limit plates 5, thus achieving the effect of improving work efficiency and at the same time improving the service life of the device.

[0031] By riveting the expansion block 3 and the cutting blade 4 on the scissor-expander arm 2, it is convenient to replace the expansion block 3 or the cutting blade 4 with different specifications according to the objectives of expanding and cutting, thereby achieving the effect of improving the applicability of the device. By providing the auxiliary handle 6 with an anti-slip sleeve 15 on the cylinder body 1, it is convenient for the staff to use, effectively improving the practicability of the device.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A new type of hydraulic shearing and expanding pliers, comprising a cylinder body (1), characterized in that: Two limit plates (5) are fixedly installed at the front end of the cylinder body (1), and the two limit plates (5) are fixedly connected. Two limit arc grooves (10) are symmetrically formed on each limit plate (5). A limit sliding groove (9) is formed between the two limit arc grooves (10) on each limit plate (5). A shearing and expanding slider (14) is arranged between the two limit plates (5). A second connecting bolt (13) is fixedly inserted on the shearing and expanding slider (14). The front and rear ends of the second connecting bolt (13) are respectively slidably installed in the front and rear limit sliding grooves (9). Two connecting arms (12) are rotatably installed on the shearing and expanding slider (14) through the second connecting bolt (13). A main pin (18) is further arranged between the two limit plates (5). The front and rear ends of the main pin (18) are respectively fixedly installed on the front and rear limit plates (5). Two shearing and expanding pliers arms (2) are rotatably installed on the main pin (18). The bottom ends of the two shearing and expanding pliers arms (2) are respectively fixedly installed with first connecting bolts (11). The front and rear ends of each first connecting bolt (11) are respectively slidably installed in the front and rear limit sliding grooves (9). The two shearing and expanding pliers arms (2) are respectively rotatably connected through the first connecting bolts (11) and the two connecting arms (12).

2. The novel hydraulic shearing and expanding pliers according to claim 1, wherein: An expansion block (3) is fixedly installed at the top end of each shearing and expanding pliers arm (2) through a rivet. A shearing blade (4) is fixedly installed on one side where the two shearing and expanding pliers arms (2) are close to each other through a rivet.

3. The novel hydraulic shearing and expanding pliers according to claim 1, characterized in that: A driving oil cylinder (8) is fixedly installed inside the cylinder body (1). The telescopic end at the top of the driving oil cylinder (8) is fixedly installed at the bottom of the shearing and expanding slider (14).

4. A novel hydraulic cutting and spreading pliers according to claim 1, characterized in that: A pipe connection sleeve (19) is fixedly sleeved at the bottom of the cylinder body (1). An oil inlet (17) is fixedly inserted at the left end of the pipe connection sleeve (19). An oil outlet (16) is fixedly inserted at the right end of the pipe connection sleeve (19).

5. A novel hydraulic shearing and expanding pliers according to claim 4, characterized in that: A manual control valve (7) is rotatably inserted at the bottom end of the pipe connection sleeve (19). The oil outlet (16) and the oil inlet (17) are both internally connected to the driving oil cylinder (8) through the manual control valve (7).

6. The novel hydraulic shearing and expanding pliers according to claim 1, characterized in that: An auxiliary handle (6) is fixedly sleeved on the cylinder body (1). An anti-slip sleeve (15) is fixedly sleeved on the auxiliary handle (6).

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