C-shaped locking pliers
By designing an adjustable plier head length and an accurate clamping system in the C-type plier, the problem of fixing the head length of the traditional C-type plier head is solved, and the flexibility and efficiency of the tool are improved.
Patent Information
- Application Number
- CN202421707561.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-18
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-07-18
AI Technical Summary
The traditional C-type powerful pliers have a fixed length and cannot be adjusted as needed, resulting in the inability to meet diverse work needs, which affects work convenience and efficiency.
A C-type force pliers are designed, using an extension plate that is slidingly connected to the fixed pliers head and the movable pliers head. The length of the pliers head is adjusted through the cooperation of the screw and the clamp. The clamping assembly includes a movable seat and a press head for clamping and fixing the workpiece.
It realizes flexible adjustment of clamp length, improves the functionality, flexibility and economicality of the tool, making it more practical and efficient. At the same time, through the coordination of the adjustment bolts and the movable clamps, the precise clamping and appropriate force of the workpiece are ensured, reducing the user's hand fatigue.
Smart Images
Figure CN222958387U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of clamping tools, in particular to a C-type pipe wrench. Background Art
[0002] The C-type pipe wrench is a labor-saving tool made of high-quality carbon steel or stainless steel, with strong load-bearing capacity and wear resistance. Its unique C-shaped design enables it to firmly clamp pipes and cylindrical workpieces of various diameters, and is widely used in industries such as electric power, construction, shipbuilding, and machinery manufacturing. The C-type pipe wrench is simple to use and convenient to operate, which can greatly improve work efficiency and is one of the indispensable tools in the industrial field.
[0003] When using the traditional C-type pipe wrench, first, the jaws need to be opened to an appropriate width to accommodate the pipe or cylindrical workpiece to be clamped. Then, the workpiece is placed in the middle of the jaws, ensuring that the workpiece is placed correctly and clamped. Next, pressure can be applied by rotating the handle of the wrench body to close the jaws tightly, thereby firmly clamping the workpiece. During the use process, it is necessary to ensure that the support feet of the pipe wrench are firmly placed on a flat surface to provide stable support and prevent the pipe wrench from sliding during use.
[0004] The above-mentioned traditional C-type pipe wrench usually consists of a pair of fixed wrench arms, which are connected by hinges and have a limiting device at the opening to ensure a certain opening width when clamping an object. Such a setting makes the length of the wrench head fixed and cannot be adjusted according to needs. The fixed-length wrench cannot meet the diverse work requirements, thus affecting the work convenience and efficiency. Summary of the Utility Model
[0005] In order to make up for the above deficiencies, the utility model provides a C-type pipe wrench, aiming to improve the problem that the length of the wrench head of the traditional C-type pipe wrench is fixed and cannot be adjusted according to needs, thus unable to meet the diverse work requirements and further affecting the work convenience and efficiency.
[0006] To achieve the above object, the present utility model provides the following technical solutions: A C-type power clamp, comprising a fixed jaw, on one side of the fixed jaw there is provided a movable jaw, both the outer walls of the fixed jaw and the movable jaw are slidably connected with extension plates, one end of the extension plate is provided with a clamping assembly for clamping and fixing a workpiece, a card slot is formed inside the extension plate, a bearing is fixedly connected inside the movable jaw, the inner wall of the bearing is fixedly connected with a screw rod, both ends of the screw rod are fixedly connected with handles, the outer wall of the screw rod is slidably connected inside the card slot, a clamping block is threadedly connected to the outer wall of the screw rod, the outer wall of the clamping block is slidably connected inside the card slot, a limiting plate is fixedly connected to the outer wall of the clamping block, and both the clamping block and the limiting plate are slidably connected inside the movable jaw.
[0007] Further, the clamping assembly includes a movable seat, the inside of the movable seat is rotatably connected to one end of the extension plate, and a pressing head is fixedly connected to the outer wall of the movable seat.
[0008] Further, one end of the fixed jaw is fixedly connected with a fixed jaw body, and one end of the movable jaw is rotatably connected inside the fixed jaw body.
[0009] Further, the outer wall of the movable jaw is rotatably connected with a movable jaw body, and the movable jaw body is arranged on one side of the fixed jaw body.
[0010] Further, a rotating rod is rotatably connected inside both the movable jaw and the fixed jaw body, and a telescopic rod is fixedly connected to one end of the rotating rod.
[0011] Further, a spring is sleeved outside the telescopic rod, both ends of the spring are fixedly connected with fixing plates, and the inside of the fixing plates is fixedly connected to the outer wall of the rotating rod.
[0012] Further, a support rod is rotatably connected to the inner wall of the movable jaw body, and one end of the support rod is rotatably connected to the inner wall of the fixed jaw body.
[0013] Further, an opening handle is rotatably connected to the inner wall of the movable jaw body, and an adjusting bolt is threadedly connected inside the fixed jaw body.
[0014] The present utility model has the following beneficial effects:
[0015] 1. In the present utility model, first, the driving handle cooperates with the bearing to drive the screw rod to rotate inside the fixed jaw and the movable jaw. Then, the extension plate is pulled for length adjustment. Next, the handle is rotated in the reverse direction and cooperates with the limit plate to drive the fixed jaw body to move into the internal of the card slot for fixation. Finally, the workpiece is clamped and fixed by the movable seat and the pressure head, solving the problem that the length of the jaw of the C-type heavy-duty clamp is fixed and cannot be adjusted according to needs, which affects the work convenience and efficiency, achieving that the length of the jaw can be adjusted according to needs, improving its functionality, flexibility and economy, and making it more practical and efficient.
[0016] 2. In the present utility model, first, the adjusting bolt is driven to adjust the tightness of the jaw. Then, the movable jaw body is driven to cooperate with the opening handle, the support rod, the rotating rod, the fixed plate and the spring to drive the movable jaw and the pressure head to clamp and fix the workpiece, achieving convenient operation, ensuring that the user can more accurately control the force when clamping the workpiece, and at the same time reducing the hand fatigue of the user when using the tool for a long time. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is a three-dimensional structural schematic diagram of a C-type heavy-duty clamp proposed by the present utility model;
[0018] Figure 2 is an internal structural schematic diagram of the extension plate of a C-type heavy-duty clamp proposed by the present utility model;
[0019] Figure 3 is Figure 2 the enlarged view at A in
[0020] Figure 4 is a structural schematic diagram of one side of the card block of a C-type heavy-duty clamp proposed by the present utility model;
[0021] Figure 5 is an internal structural schematic diagram of the fixed jaw body of a C-type heavy-duty clamp proposed by the present utility model.
[0022] LEGEND DESCRIPTION:
[0023] 1. Fixed jaw; 2. Movable jaw; 3. Extension plate; 4. Movable seat; 5. Pressure head; 6. Card slot; 7. Bearing; 8. Screw rod; 9. Handle; 10. Card block; 11. Limit plate; 12. Fixed jaw body; 13. Movable jaw body; 14. Rotating rod; 15. Fixed plate; 16. Spring; 17. Support rod; 18. Adjusting bolt; 19. Opening handle; 20. Telescopic rod. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0024] Next, in combination with the accompanying drawings in the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0025] Referring to Figure 1 - Figure 4 , an embodiment provided by the present utility model: a C-type large pliers, including a fixed jaw 1, a movable jaw 2 is arranged on one side of the fixed jaw 1, extension plates 3 are slidably connected to the outer walls of the fixed jaw 1 and the movable jaw 2, a clamping assembly is arranged at one end of the extension plate 3, and the clamping assembly is used for clamping and fixing the workpiece. A card slot 6 is opened inside the extension plate 3, a bearing 7 is fixedly connected inside the movable jaw 2, a screw rod 8 is fixedly connected to the inner wall of the bearing 7, handles 9 are fixedly connected to both ends of the screw rod 8, the outer wall of the screw rod 8 is slidably connected inside the card slot 6, a clamping block 10 is threadedly connected to the outer wall of the screw rod 8, the outer wall of the clamping block 10 is slidably connected inside the card slot 6, a limiting plate 11 is fixedly connected to the outer wall of the clamping block 10, and the clamping block 10 and the limiting plate 11 are both slidably connected inside the movable jaw 2. The clamping assembly includes a movable seat 4, and the inside of the movable seat 4 is rotatably connected to one end of the extension plate 3, and a pressure head 5 is fixedly connected to the outer wall of the movable seat 4;
[0026] Specifically, first drive the handle 9 to drive the screw rod 8 to rotate inside the movable jaw 2 in cooperation with the bearing 7. Due to the threaded relationship between the screw rod 8 and the clamping block 10 and the fibrous shape of the limiting plate 11, the clamping block 10 is driven to slide inside the movable jaw 2 and the extension plate 3. When the clamping block 10 completely moves inside the movable jaw 2, the extension plate 3 can be pulled to slide on the outer wall of the movable jaw 2, so that the screw rod 8 slides inside the card slot 6 inside the extension plate 3. When it slides to a suitable position, reverse-rotate the handle 9 to drive the clamping block 10 to move into the card slot 6 for limiting, realizing the fixation of the extension plate 3 and the movable jaw 2. The extension plate 3 on the outer wall of the fixed jaw 1 can also be telescoped, so as to realize the effect of adjusting the length of the large pliers. Finally, the workpiece is clamped and fixed by the movable seat 4 and the pressure head 5.
[0027] Referring to Figure 1 and Figure 5, one end of the fixed jaw 1 is fixedly connected to the fixed body 12. One end of the movable jaw 2 is rotatably connected inside the fixed body 12, and the outer wall of the movable jaw 2 is rotatably connected to the movable body 13. The movable body 13 is arranged on one side of the fixed body 12. A rotating rod 14 is rotatably connected inside both the movable jaw 2 and the fixed body 12. One end of the rotating rod 14 is fixedly connected to a telescopic rod 20. A spring 16 is sleeved outside the telescopic rod 20. Both ends of the spring 16 are fixedly connected to a fixing plate 15. The inside of the fixing plate 15 is fixedly connected to the outer wall of the rotating rod 14. A support rod 17 is rotatably connected to the inner wall of the movable body 13. One end of the support rod 17 is rotatably connected to the inner wall of the fixed body 12. An opening handle 19 is rotatably connected to the inner wall of the movable body 13. An adjusting bolt 18 is threadedly connected inside the fixed body 12;
[0028] Specifically, when using the locking pliers, first drive the movable body 13 to cooperate with the support rod 17 to push the movable jaw 2 to move, so that the movable jaw 2 rotates around the connection point between the movable jaw 2 and the fixed body 12. At the same time, the spring 16 is stretched by driving the rotating rod 14 and the fixing plate 15, realizing the driving of the movable jaw 2, so as to facilitate the clamping and fixing of the workpiece. Then, by driving the adjusting bolt 18, the opening and closing force of the jaws can be adjusted to adapt to workpieces of different materials and thicknesses, ensuring the suitability of the clamping force. Finally, the opening and closing of the jaws are operated through the opening handle 19.
[0029] Working principle: When the C-type locking pliers are needed, first rotate the handle 9, rotate the screw rod 8 through the bearing 7, so that the clamping block 10 slides along the thread, driving the extension plate 3 to move on the outer wall of the movable jaw 2. The screw rod 8 slides in the card slot 6 of the extension plate 3. After reaching the position, rotate the handle 9 in the reverse direction to limit the clamping block 10 in the card slot 6, fixing the extension plate 3 and the movable jaw 2. The extension plate 3 outside the fixed jaw 1 is telescopic to adjust the length of the locking pliers. Finally, the movable seat 4 and the pressing head 5 are used to clamp and fix the workpiece;
[0030] In addition, during use, push the movable body 13 to move the movable jaw 2 through the support rod 17, rotate around the connection point of the fixed body 12, the rotating rod 14 and the fixing plate 15 stretch the spring 16, driving the movable jaw 2, facilitating the clamping of the workpiece, the adjusting bolt 18 adjusts the opening and closing force of the jaws to adapt to different workpieces, and the opening handle 19 controls the opening and closing of the jaws.
[0031] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A C-type locking pliers, comprising a fixed pliers head (1), characterized in that: A movable clamp head (2) is arranged on one side of the fixed clamp head (1); the outer walls of the fixed clamp head (1) and the movable clamp head (2) are both slidably connected with an extension plate (3); a clamping assembly is arranged at one end of the extension plate (3); the clamping assembly is used to clamp and fix a workpiece; a clamping groove (6) is provided inside the extension plate (3); a bearing (7) is fixedly connected inside the movable clamp head (2); a screw rod (8) is fixedly connected to the inner wall of the bearing (7); handles (9) are fixedly connected to both ends of the screw rod (8); the outer wall of the screw rod (8) is slidably connected to the inside of the clamping groove (6); a clamping block (10) is threadedly connected to the outer wall of the screw rod (8); the outer wall of the clamping block (10) is slidably connected to the inside of the clamping groove (6); the outer wall of the clamping block (10) is fixedly connected to a limiting plate (11); the clamping block (10) and the limiting plate (11) are both slidably connected to the inside of the movable clamp head (2).
2. A C-type locking pliers according to claim 1, characterized in that: The clamping assembly comprises a movable seat (4), the interior of the movable seat (4) is rotatably connected to one end of the extension plate (3), and the outer wall of the movable seat (4) is fixedly connected to a pressure head (5).
3. A C-type locking pliers according to claim 1, characterized in that: One end of the fixed pliers head (1) is fixedly connected to a fixed pliers body (12), and one end of the movable pliers head (2) is rotatably connected to the interior of the fixed pliers body (12).
4. A C-type locking pliers according to claim 3, characterized in that: The outer wall of the movable pliers head (2) is rotatably connected to a movable pliers body (13), and the movable pliers body (13) is arranged on one side of the fixed pliers body (12).
5. A C-type locking pliers according to claim 4, characterized in that: The movable clamp head (2) and the fixed clamp body (12) are both rotatably connected to a rotating rod (14), and one end of the rotating rod (14) is fixedly connected to a telescopic rod (20).
6. A C-type locking pliers according to claim 5, characterized in that: The outside of the telescopic rod (20) is sleeved with a spring (16), both ends of the spring (16) are fixedly connected to a fixing plate (15), and the inside of the fixing plate (15) is fixedly connected to the outer wall of the rotating rod (14).
7. A C-type locking pliers according to claim 4, characterized in that: The inner wall of the movable pliers body (13) is rotatably connected to a support rod (17), and one end of the support rod (17) is rotatably connected to the inner wall of the fixed pliers body (12).
8. A C-type locking pliers according to claim 7, characterized in that: An opening handle (19) is rotatably connected to the inner wall of the movable pliers body (13), and an adjusting bolt (18) is threadedly connected to the inner wall of the fixed pliers body (12).