Single clamp head and hydraulic clamp
By designing the ring compression groove and clamping mold of the single clamp head, the problem of unstable connection between single clamp fittings and ordinary fittings is solved, achieving higher connection strength and adaptability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUHUAN CHANGHONG TOOLS CO LTD
- Filing Date
- 2025-04-30
- Publication Date
- 2026-04-10
AI Technical Summary
Existing crimping wrenches have insufficient pull-out resistance when connecting single-clamp fittings and ordinary fittings, resulting in unstable connections.
Design a single clamp head with a left clamp and a right clamp. The front end is provided with a ring pressure groove and a clamping mold. The ring pressure groove is provided with a receiving groove and a clamping mold. The clamping mold is formed on one side of the receiving groove to form multiple indentations on the sealing ring groove side of the single clamp fitting, thereby enhancing the connection stability and preventing incorrect clamping direction by a limiting block.
By creating multiple indentations on the single-clamp fitting, the connection strength between the single-clamp fitting and ordinary fittings is increased, preventing incorrect clamping direction and adapting to single-clamp fittings of different sizes.
Smart Images
Figure CN224102839U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of hydraulic tools, and particularly relates to a single clamp jaw and a hydraulic clamp. BACKGROUND
[0002] A pipe pressing clamp is disclosed in Chinese Utility Model 2021230464833, which comprises a jaw, and the jaw comprises: a left jaw arm and a right jaw arm, both of which have a force receiving part, a rotating part and a jaw opening part, and the two jaw opening parts together form a jaw opening for pressing a pipe.
[0003] The pipe pressing clamp is applied to a double clamp pipe fitting, which is provided with a sealing ring groove for arranging a sealing element therein, and the double clamp pipe fitting is connected with a common pipe fitting, the common pipe fitting is inserted into the double clamp pipe fitting, and the connection is achieved by the pipe pressing clamp, that is, a containing groove is arranged at the center of the inner wall of the two jaw opening parts of the pipe pressing clamp, the containing groove is used for containing the sealing ring groove on the pipe fitting for mounting the sealing element, and a pressing die is arranged on the left and right sides of the containing groove; when the jaw opening is clamped, the sealing ring groove is located in the containing groove, and the pressing die abuts against the inserted part of the two pipe fittings to form two pressing marks for positioning the inserted pipe fittings.
[0004] In fact, in order to reduce the cost, there is also a single clamp pipe fitting on the market, and the sealing ring groove on the single clamp pipe fitting is arranged at the end of the single clamp pipe fitting, and the connection with the common pipe fitting is achieved by arranging a pressing mark on the inner side of the sealing ring groove. At this time, if the above-mentioned pipe pressing clamp is used, only one pressing mark can be arranged on one side of the sealing ring groove, and the anti-pulling ability between the pipe fittings is relatively weak, and when a larger external force is encountered, the pipe fittings may be separated, which affects the stability of the connection between the pipe fittings. SUMMARY
[0005] The utility model aims to provide a single clamp jaw and a hydraulic clamp suitable for a single clamp pipe fitting.
[0006] The utility model is implemented in the following way:
[0007] A single clamp jaw comprises a left jaw part and a right jaw part, the front end of the left jaw part and the front end of the right jaw part are both provided with a ring pressing groove, at least a containing groove and a clamping die are arranged in the ring pressing groove, the containing groove is used for containing the outwardly protruding sealing ring groove part on the pipe fitting, and the clamping die is provided with at least two clamping dies and is located on one side of the containing groove.
[0008] The left jaw part and the right jaw part are used for clamping to form a jaw opening, and the clamping die is used for ring pressing the outer part on one side of the sealing ring groove on the pipe fitting, so as to achieve the crimping between the two pipe fittings.
[0009] Further, the clamping die is a protruding strip part formed on one side of the containing groove.
[0010] Further, the cross-sectional shape of the convex strip part is trapezoidal or semicircular.
[0011] Further, the limiting block is further provided, and the limiting block is provided with two limiting grooves and is fixed on one side of the clamping die of the left and right clamping parts.
[0012] Further, the limiting block is fixed on the outer side of the left and right clamping parts deviated from the clamping die.
[0013] Further, the limiting block is detachably fixed on the outer side of the left and right clamping parts deviated from the clamping die.
[0014] Further, the base is further provided, and the base is in the shape of T, and the left and right ends of the base are rotatably connected with the left and right clamping parts.
[0015] The hydraulic clamp adopts the single clamping head.
[0016] Compared with the prior art, the utility model has the advantages of:
[0017] The patent forms two indentations on one side of the sealing ring groove on the single clamping pipe fitting through the clamping die, realizes the connection between the single clamping pipe fitting and the ordinary pipe fitting, increases the stability of the single clamping pipe fitting and the ordinary pipe fitting after being connected through manufacturing a plurality of indentations, and increases the overall connection strength.
[0018] The patent can judge whether the current clamping die is clamped on the single clamping pipe fitting or the ordinary pipe fitting according to whether the limiting mouth pipe fitting can be normally accommodated in the limiting mouth, so as to prevent the clamping direction from being wrong.
[0019] The patent can replace the limiting blocks of different sizes by detaching the limiting blocks, forms different limiting mouths, and is suitable for different single clamping pipe fittings. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 It is a structure schematic view of the clamping head.
[0021] Figure 2 It is a structure schematic view of the right clamping part.
[0022] Figure 3 It is a cross-sectional schematic view of the clamping head.
[0023] Figure 4 It is a split schematic view of the limiting block on the clamping head.
[0024] The meanings represented by the reference numerals in the drawings are as follows:
[0025] 1. Left clamp; 2. Right clamp; 3. Ring groove; 31. Receiving groove; 32. Clamping mold; 4. Jaw; 5. Limiting block; 51. Limiting groove; 52. Limiting opening; 6. Base; 61. Rotating shaft; Detailed Implementation
[0026] The present invention will be further described below with reference to specific embodiments:
[0027] A single caliper head is disclosed for use in a hydraulic caliper. The hydraulic caliper includes a housing containing a battery and a hydraulic cylinder, with the single caliper head located at the top of the housing. The single caliper head includes a left clamping section 1 and a right clamping section 2. Figure 1 As shown, the single caliper head in this patent actually includes a base 6, which is T-shaped. Rotating holes are provided at both ends of the base 6. A rotating shaft 61 is installed in the rotating holes to allow the left and right ends of the base 6 to be rotatably connected to the left clamp 1 and right clamp 2, respectively. The lower ends of the left clamp 1 and right clamp 2 are offset to the left and right sides to abut against the hydraulic cylinder in the hydraulic caliper, causing the left clamp 1 and right clamp 2 to rotate around the rotating shaft 61 on the base 6, thereby clamping the upper ends of the left clamp 1 and right clamp 2. Generally, a reset component is also provided in the left clamp 1 and right clamp 2. The reset component is generally a spring connected between the left clamp 1 and right clamp 2. When the hydraulic cylinder resets, the left clamp 1 and right clamp 2 are opened.
[0028] The front end of the left clamp 1 and the front end of the right clamp 2 are both provided with ring pressing grooves 3. The ring pressing grooves 3 are provided with at least a receiving groove 31 and a clamping mold 32. The receiving groove 31 is used to receive the outwardly protruding sealing ring groove part on the pipe fitting. At least two clamping molds 32 are provided and are located on one side of the receiving groove 31.
[0029] Combination Figure 2 , 3 As shown, the annular groove 3 is semi-circular in shape and is excavated on the inner side of the upper end of the left clamp 1 and the right clamp 2. When the left clamp 1 and the right clamp 2 are clamped, the two annular grooves 3 connect to form a jaw 4. The receiving groove 31 is located at the bottom of the annular groove 3 and is set along the annular groove 3. The cross-section of the receiving groove 31 is arc-shaped, which is used to adapt to the sealing ring groove on the single-clamp pipe fittings on the market. The clamping mold 32 is a protruding part integrally formed on one side of the receiving groove 31. There are two protruding parts, and their cross-sections are trapezoidal or semi-circular, and they are also set along the annular groove 3.
[0030] When the ring pressure clamp works, the accommodating groove 31 is clamped after being opposite to the sealing ring groove on the single card pipe, two pressure marks are formed on one side of the sealing ring groove on the single card pipe through the clamping die 32, the connection of the single card pipe and the common pipe is realized, the stability of the single card pipe and the common pipe after being connected is increased through manufacturing a plurality of pressure marks, and the overall structural strength is increased.
[0031] The clamping die 32 can also be provided with a plurality of, for example, three or four, which is increased according to the specific needs of the user.
[0032] Further, the limiting block 5 is also included, the limiting block 5 is provided with two and is fixed on one side of the clamping die 32 provided on the left clamp part 1 and the right clamp part 2, the limiting block 5 is provided with the limiting groove 51, and the two limiting grooves 51 are used to form the limiting opening 52 with a smaller caliber than the clamp opening 4 when the left clamp part 1 and the right clamp part 2 are clamped.
[0033] Combining Figure 1 , 3 The limiting block 5 in the patent is in the form of a sheet, which is fixed on the outer side of the clamping die 32 through the form of a fastener, the fastener adopts a screw, and the limiting block 5 can be detachably fixed on the outer side of the clamping die 32 of the left clamp part 1 and the right clamp part 2. The limiting groove 51 in the form of a semicircle is provided on the limiting block 5, the two limiting grooves 51 form the limiting opening 52 in the form of a semicircle when the left clamp part 1 and the right clamp part 2 are clamped, and the limiting opening 52 is generally smaller than the shape of the clamp opening 4. This is because the pipe diameter of the existing single card pipe is slightly smaller than the pipe diameter of the common pipe, so that the user can clamp the single card clamp head, and whether the pipe can be normally accommodated in the limiting opening 52 according to the limiting opening 52, so as to judge whether the clamping die 32 is clamped on the single card pipe or the common pipe, so as to prevent the wrong direction from being clamped. In addition, different limiting blocks 5 of different sizes can be replaced by disassembling the limiting block 5 to form different limiting openings 52 to adapt to different single card pipes.
[0034] The above embodiment is only a preferred embodiment of the present application, not limited to the protection scope of the present application, therefore: all equivalent changes made according to the structure, shape and principle of the present application should be covered in the protection scope of the present application.
[0035] It is to be understood that the structures, proportions, sizes, etc. shown in the drawings of the present application are merely intended to facilitate the understanding of the content disclosed in the present application, to be understood and read by those skilled in the art, and are not intended to limit the conditions that can be implemented by the present application, and therefore do not have substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" etc. cited in the present application are only for the convenience of clear description, and are not intended to limit the scope of the present application that can be implemented, and the change or adjustment of the relative relationship without substantial change of the technical content should also be considered as the scope of the present application that can be implemented.
[0036] It is also necessary to point out that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on another element or there can be a middle element. When an element is referred to as "connected" to another element, it can be directly connected to another element or indirectly connected to another element through a middle element.
[0037] In addition, the description involving "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection claimed by the present application.
Claims
1. A single caliper head, characterized by: The single clamp includes a left jaw (1) and a right jaw (2), the front end of the left jaw (1) and the front end of the right jaw (2) are provided with a ring pressing groove (3), the ring pressing groove (3) is provided with at least a containing groove (31) and a clamping die (32), the containing groove (31) is used for containing the sealing ring groove part of a pipe, and the clamping die (32) is provided with at least two clamping dies and is located on one side of the containing groove (31). The left jaw (1) and the right jaw (2) are used for clamping to form a jaw (4), and the clamping die (32) is used for pressing the outer part of the pipe on one side of the sealing ring groove, so as to realize the crimping between two pipes.
2. A single caliper head according to claim 1, characterized in that: The clamping die (32) is a protruding strip part formed on one side of the containing groove (31).
3. A single caliper head according to claim 2, wherein: The cross section of the protruding strip part is in a trapezoidal or semicircular shape.
4. The single caliper head of claim 1, wherein: The single clamp further includes a limiting block (5), the limiting block (5) is provided with two limiting blocks and is fixed on one side of the left jaw (1) and the right jaw (2) provided with the clamping die (32), the limiting block (5) is provided with a limiting groove (51), and the two limiting grooves (51) are used for forming a limiting opening (52) with a smaller caliber than the jaw (4) when the left jaw (1) and the right jaw (2) are clamped.
5. A single caliper head according to claim 4, wherein: The limiting block (5) is fixed on the outer side of the left jaw (1) and the right jaw (2) deviated from the clamping die (32).
6. A single caliper head according to claim 5, wherein: The limiting block (5) is detachably fixed on the outer side of the left jaw (1) and the right jaw (2) deviated from the clamping die (32).
7. A single caliper head according to claim 1, wherein: The single clamp further includes a base (6), the base (6) is in a "T" shape, and the left end and the right end of the base (6) are rotatably connected with the left jaw (1) and the right jaw (2) respectively.
8. A hydraulic tong, characterized by: The single clamp is used for the single clamp head according to any one of claims 1-7.