Elbow joint clamping device

Abstract

The utility model relates to the technical field of elbow joints, in particular to an elbow joint clamping device, which comprises a mounting unit, a clamping unit, a clamping unit and a clamping unit. The clamping unit comprises a transmission assembly arranged on the clamping seat, a fixing assembly arranged on the transmission assembly and a driving assembly arranged on the fixing assembly; the fixing unit comprises a limiting assembly which is arranged on the clamping base and connected with the transmission assembly. The elbow pipe joint clamping device has the advantages that the clamping unit is matched with the fixing unit, the effect of rapidly and stably clamping an elbow pipe joint can be achieved, the clamping stability can be improved by controlling the multiple clamping arc plates at the same time to clamp the elbow pipe, and the clamping efficiency is improved. And moreover, the device can be more flexibly adapted to pipeline joints with different specifications or shapes, and the flexibility and applicability of operation are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of elbow joints, in particular to an elbow joint clamping device. Background Art

[0002] Elbow joints usually have different angles of curvature, which can help pipe systems bend and connect in different directions. Welding can firmly connect elbow joints to pipes and provide higher strength. It is a more common connection method at present.

[0003] During the welding process of the elbow joint, the elbow joint and the pipe need to maintain the correct position and angle to improve the welding quality and efficiency. The existing clamping device is suitable for pipes of specific sizes or shapes. Different clamping devices need to be replaced for pipes of different specifications or shapes, which increases the complexity and cost of the operation. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the problem that the existing clamping devices in the above or prior art cannot adapt to pipe joints of different specifications or shapes, the present utility model is proposed.

[0006] Therefore, the utility model aims to provide a elbow joint clamping device.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: an installation unit, including a fixed seat, a clamping seat arranged on the fixed seat, and an operating hole arranged on the fixed seat; a clamping unit, including a transmission assembly arranged on the clamping seat, a fixing assembly arranged on the transmission assembly, and a driving assembly arranged on the fixing assembly; a fixing unit, including a limiting assembly arranged on the clamping seat and connected to the transmission assembly, a reset assembly arranged on the limiting assembly, and a sliding assembly arranged on the reset assembly.

[0008] As a preferred solution of the elbow joint clamping device described in the utility model, the transmission assembly includes a rotating ring groove arranged in the clamping seat, an internal gear ring arranged in the rotating ring groove, a transmission groove arranged in the rotating ring groove, and a gear arranged in the transmission groove; the internal gear ring and the gear cooperate with each other.

[0009] As a preferred solution of the elbow joint clamping device described in the utility model, wherein: the fixing assembly includes a fixing plate arranged in the rotating ring groove, a positioning groove arranged on the fixed plate, a sliding plate arranged in the positioning groove, and an elliptical groove arranged on the sliding plate; the fixing plate is arranged on one side of the gear.

[0010] As a preferred solution of the elbow joint clamping device of the utility model, the driving assembly includes a screw on a gear, an extrusion plate arranged on the outside of the screw, and a circular hole arranged on the extrusion plate; the screw is threadedly connected to the extrusion plate through the circular hole.

[0011] As a preferred solution of the elbow joint clamping device of the utility model, it also includes a pushing component, which includes a pushing block arranged on the extrusion plate, a connecting block arranged on the sliding plate, and an inclined surface arranged on the connecting block; the pushing block and the inclined surface cooperate with each other.

[0012] As a preferred solution of the elbow joint clamping device of the utility model, it also includes a clamping assembly, and the clamping assembly includes a through groove on the inner side of the clamping seat and a clamping arc plate arranged on the connecting block.

[0013] As a preferred solution of the elbow joint clamping device described in the utility model, the limiting assembly includes a limiting groove arranged in the rotating ring groove, a connecting ring arranged in the limiting groove, and a triangular plate arranged on the inner wall of the connecting ring; the connecting ring is arranged on both sides of the inner gear ring.

[0014] As a preferred solution of the elbow joint clamping device of the utility model, the reset assembly includes a spring arranged on the inner wall of the limiting groove, a driven arc plate arranged on the spring, and a driven block arranged on the outer side of the driven arc plate; the driven block and the triangular plate cooperate with each other.

[0015] As a preferred solution of the elbow joint clamping device of the utility model, the sliding assembly includes a sliding groove arranged on the lower side surface of the clamping seat and a push block arranged in the sliding groove.

[0016] As a preferred solution of the elbow joint clamping device of the utility model, it also includes an extrusion assembly, which includes a threaded groove arranged on the lower side of the clamping seat, a knob in the threaded groove, and an inclined arc surface arranged on the inner wall of the knob.

[0017] The beneficial effects of the utility model are as follows: by cooperating with the fixing unit through the clamping unit, the effect of quickly and stably clamping the elbow joint can be achieved; by simultaneously operating a plurality of clamping arc plates to clamp the elbow, the stability during clamping can be improved, and it can more flexibly adapt to pipe joints of different specifications or shapes, thereby improving the flexibility and applicability of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0019] Figure 1 The utility model is a schematic diagram of the overall structure of the elbow joint clamping device.

[0020] Figure 2 It is a cross-sectional schematic diagram of the elbow joint clamping device of the utility model.

[0021] Figure 3 It is a cross-sectional schematic diagram of the elbow joint clamping device of the utility model.

[0022] Figure 4 for Figure 3 Enlarged schematic diagram at point A in the middle. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0026] Next, the present utility model will be described in detail with reference to the schematic diagrams. When describing the embodiments of the present utility model in detail, for the convenience of explanation, the cross-sectional views showing the device structure will be locally enlarged out of the general proportion, and the schematic diagrams are only examples and should not limit the scope of protection of the present utility model herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0027] Embodiment 1

[0028] Referring to Figures 1 to 3 , which is the first embodiment of the present utility model. This embodiment provides a clamping device for elbow joints, which can achieve the effects of quickly clamping elbow joints and adapting to pipe joints of different specifications or shapes. It includes an installation unit 100, which includes a fixed seat 101, a clamping seat 102 arranged on the fixed seat 101, and an operation hole 103 arranged on the fixed seat 101; a clamping unit 200, which includes a transmission component 201 arranged on the clamping seat 102, a fixing component 202 arranged on the transmission component 201, and a driving component 203 arranged on the fixing component 202.

[0029] Specifically, the fixed seat 101 can be fixed on the workbench or a place convenient for welding by passing bolts through the operation hole 103, which improves the convenience and safety of the work. The fixed seat 101 is in a "C" shape, and two clamping seats 102 are arranged at the symmetric positions on both sides. One side is used to clamp the elbow joint and the other side is used to clamp the pipe. The clamping seat 102 is in a circular ring shape, and its outer side is fixedly connected to the fixed seat 101. A rotating ring groove 201a is arranged on the outer side of the clamping seat 102, and an internal gear ring 201b is rotatably connected in the rotating ring groove 201a. A number of tooth peaks are arranged on the inner side wall of the internal gear ring 201b, and a number of rectangular blocks are arranged on its outer side to increase the friction force when operating to rotate the internal gear ring 201b, and the rectangular blocks do not contact the fixed seat 101.

[0030] A transmission groove 201c is provided on the inner wall of the rotating ring groove 201a, and the transmission groove 201c is in a circular ring shape. A plurality of fixed components 202 are arranged inside the transmission groove 201c, including a gear 201e connected to the lower inner wall of the transmission groove 201c by a rotating shaft, the gear 201e is in contact with and meshed with the inner gear ring 201b, and a fixed plate 202a is fixedly installed on the inner wall of the transmission groove 201c above the gear 201e, and a screw 203a is connected to the upper inner wall of the transmission groove 201c by a rotating shaft, and the screw 203a penetrates the fixed plate 202a and is connected with the gear 201e. Two positioning grooves 202b are provided on the upper surface of the fixed plate 202a. The positioning groove 202b is an "L"-shaped groove, and a sliding plate 202c matching it is slidably connected to its inner wall. The sliding plate 202c is slidably connected to the upper part of the fixed plate 202a. An elliptical groove 202d is provided on the upper surface of the sliding plate 202c. The width of the elliptical groove 202d is matched with the diameter of the screw 203a, and the screw 203a is arranged on the inner wall of the elliptical groove 202d. The design of the elliptical groove 202d can help the sliding plate 202c maintain stability and prevent unnecessary vibration or displacement during movement.

[0031] Furthermore, a connecting block 204b is fixedly connected to the inner side of the sliding plate 202c, an inclined surface 204c is arranged on the upper side of the connecting block 204b, a through slot 205a matching with a plurality of fixed components 202 is provided on the inner side wall of the clamping seat 102, the through slot 205a is rectangular, the connecting block 204b moves toward the inner side of the clamping seat 102 and passes through the through slot 205a to be fixedly connected with a clamping arc plate 205b, one side of the clamping arc plate 205b is inclined. The outer part of the screw rod 203a is located above the sliding plate 202c and is threadedly connected with an extrusion plate 203b, and a push block 204a is fixedly connected to the lower part of the extrusion plate 203b near the inner side, and the lower side of the push block 204a is inclined, and its inclined surface is parallel to and matched with the inclined surface 204c.

[0032] When in use, it is necessary to first reverse the inner gear ring 201b exposed on the fixing seat 101 to drive the gear 201e to reverse, and the gear 201e drives the extrusion plate 203b to move upward through the screw 203a. While moving, the inclined surface of the pushing block 204a will separate from the inclined surface 204c of the connecting block 204b. Since one side of the clamping arc plate 205b is inclined, when the elbow joint is inserted into the inner ring of the clamping seat 102, it will contact the clamping arc plate 205b and apply pressure to it. Since the connecting block 204b is not subjected to any force applied by any object at this time, the clamping arc plate 205b will move outward. When the elbow is placed in a suitable position After that, the gear 201e can be driven to rotate by the positive rotation of the inner gear ring 201b exposed on the fixed seat 101, and the gear 201e drives the extrusion plate 203b to move downward through the screw 203a. While moving, the inclined surface of the pushing block 204a will contact the inclined surface 204c of the connecting block 204b and exert downward pressure on the inclined surface 204c. Since the position of the connecting block 204b is limited, it can only move toward the inside of the clamping seat 102, driving the inner side of the clamping arc plate 205b to fit the elbow joint for clamping. By moving several clamping arc plates 205b inward at the same time, the elbow in the clamping seat 102 can be clamped and fixed.

[0033] Example 2

[0034] Reference Figures 2 to 4 , which is the second embodiment of the utility model. Different from the previous embodiment, this embodiment provides a fixing unit 300 of the elbow joint clamping device, which solves the problem that the inner gear ring cannot be fixed after rotation, including a limiting component 301 including a limiting groove 301a arranged in the rotating ring groove 201a, a connecting ring 301b arranged in the limiting groove 301a, and a triangular plate 301c arranged on the inner wall of the connecting ring 301b; the connecting ring 301b is arranged on both sides of the inner gear ring 201b, and a limiting groove 301a is provided on the lower inner wall of the rotating ring groove 201a, and a connecting ring 301b is fixedly connected to the lower side of the inner gear ring 201b, and the connecting ring 301b is rotatably connected in the limiting groove 301a, which makes the inner gear ring 201b rotate in the rotating ring groove 201a without getting out of the groove.

[0035] Furthermore, a plurality of triangular plates 301c are arranged on the inner side of the limiting groove 301a, and the plurality of triangular plates 301c are tightly connected and one side thereof is inclined and the other side is vertical, a spring 302a is fixedly connected to the inner wall of the inner side of the limiting groove 301a, and the other end of the spring 302a is fixedly connected to a driven arc plate 302b, and a plurality of driven blocks 302c are arranged on the outer side of the driven arc plate 302b, one side of the driven block 302c is vertical and the other side is inclined, and its inclined surface matches the inclined surface of the triangular plate 301c.

[0036] When in use, when the inner gear ring 201b rotates forward, the triangular plate 301c rotates forward through the connecting ring 301b, and the inclined surface of the triangular plate 301c contacts the inclined surface of the driven block 302c and applies inward pressure to it, and applies inward pressure to the spring 302a through the driven arc plate 302b, thereby causing the spring 302a to contract inwardly and store elastic potential energy. As the inner gear ring 201b continues to rotate, the inclined surface of the triangular plate 301c will be separated from the current driven block 302c. The inclined surface of 02c contacts the new driven block 302c, and this is repeated until the inner gear ring 201b can no longer rotate. At this time, the bent pipe has been clamped. At this time, the reversed inner gear ring 201b cannot rotate. Since the other side of the triangular plate 301c is vertical, and one side of the driven block 302c is also vertical, the position of the triangular plate 301c is restricted by the driven block 302c, which achieves the effect that the forward rotating inner gear ring 201b will not reverse after clamping.

[0037] Example 3

[0038] Reference Figures 2 to 4 , which is the third embodiment of the utility model. Different from the previous embodiment, it solves the problem of how to remove the bent pipe after welding. It includes a sliding assembly 303 including a sliding groove 303a provided on the lower surface of the clamping seat 102 and a push block 303b provided in the sliding groove 303a. It also includes an extrusion assembly 304, which includes a thread groove 304a provided on the lower side of the clamping seat 102, a knob 304b in the thread groove 304a, and an inclined arc surface 304c provided on the inner wall of the knob 304b.

[0039] Specifically, a plurality of sliding grooves 303a matching the number of driven arc plates 302b are opened on the lower surface of the clamping seat 102, and a push block 303b is slidably connected in the sliding groove 303a, the push block 303b and the driven arc plate 302b are fixedly connected, and the outer side of the lower end of the push block 303b presents an arc surface, and a knob 304b is threadedly connected to the lower side of the clamping seat 102, and the inner side wall of the knob 304b presents an inclined arc surface 304c, and the arc surface and the push block 303b cooperate with each other.

[0040] When in use, after welding is completed, it is necessary to reverse the inner gear ring 201b to release the pressure applied to the connecting block 204b, so as to release the clamping force of the clamping arc plate 205b on the bent pipe. However, since the driven block 302c limits the position of the triangular block, the inner gear ring 201b cannot be reversed. At this time, we can turn the knob 304b forward. As the knob 304b rotates, the inner inclined arc surface 304c will contact the push block 303b, and the push block 303b will move toward the inner side of the sliding groove 303a, driving the driven arc plate 302b to move inward, and The spring 302a applies pressure to deform it, driving the driven block 302c to move, so that the driven block 302c is separated from the triangular block and no longer contacts the triangular block. The inner gear ring 201b can be reversed without the limit of the driven block 302c. After removing the bent pipe, it is necessary to reverse the knob 304b one circle, and the stretched elastic force of the spring 302a pushes the driven arc plate 302b to reset, waiting for the next positive rotation of the inner gear ring 201b. The steps are simple in the process of clamping and releasing the bent pipe, and bent pipes of different shapes and specifications can be used, thereby improving the applicability of the device.

[0041] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and ratio of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present utility model. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0042] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0043] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0044] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A clamping device for an elbow joint, characterized in that: include, The mounting unit (100) comprises a fixing seat (101), a clamping seat (102) arranged on the fixing seat (101), and an operating hole (103) arranged on the fixing seat (101); The clamping unit (200) comprises a transmission assembly (201) arranged on the clamping seat (102), a fixing assembly (202) arranged on the transmission assembly (201), and a driving assembly (203) arranged on the fixing assembly (202); The fixing unit (300) comprises a limiting assembly (301) arranged on the clamping seat (102) and connected to the transmission assembly (201), a resetting assembly (302) arranged on the limiting assembly (301), and a sliding assembly (303) arranged on the resetting assembly (302).

2. The elbow joint clamping device according to claim 1, characterized in that: The transmission assembly (201) comprises a rotating ring groove (201a) disposed in the clamping seat (102), an inner gear ring (201b) disposed in the rotating ring groove (201a), a transmission groove (201c) disposed in the rotating ring groove (201a), and a gear (201d) disposed in the transmission groove (201c); The inner gear ring (201b) and the gear (201d) cooperate with each other.

3. The elbow joint clamping device according to claim 2, characterized in that: The fixing assembly (202) comprises a fixing plate (202a) arranged in the rotating ring groove (201a), a positioning groove (202b) arranged on the fixing plate, a sliding plate (202c) arranged in the positioning groove (202b), and an elliptical groove (202d) arranged on the sliding plate (202c); The fixing plate (202a) is arranged on one side of the gear (201d).

4. The elbow joint clamping device according to claim 3, characterized in that: The driving assembly (203) comprises a screw rod (203a) on a gear (201d), an extrusion plate (203b) arranged outside the screw rod (203a), and a circular hole (203c) arranged on the extrusion plate (203b); The screw rod (203a) is threadedly connected to the extrusion plate (203b) through the circular hole (203c).

5. The elbow joint clamping device according to claim 4, characterized in that: It also includes a pushing component (204), the pushing component (204) including a pushing block (204a) arranged on the extrusion plate (203b), a connecting block (204b) arranged on the sliding plate (202c), and an inclined surface (204c) arranged on the connecting block (204b); The pushing block (204a) and the inclined surface (204c) cooperate with each other.

6. The elbow joint clamping device according to claim 5, characterized in that: It also includes a clamping assembly (205), wherein the clamping assembly (205) includes a through groove (205a) on the inner side of the clamping seat (102), and a clamping arc plate (205b) arranged on the connecting block (204b).

7. The elbow joint clamping device according to claim 6, characterized in that: The limiting assembly (301) comprises a limiting groove (301a) arranged in the rotating ring groove (201a), a connecting ring (301b) arranged in the limiting groove (301a), and a triangular plate (301c) arranged on the inner wall of the connecting ring (301b); The connecting rings (301b) are arranged on both sides of the inner gear ring (201b).

8. The elbow joint clamping device according to claim 7, characterized in that: The reset assembly (302) comprises a spring (302a) arranged on the inner wall of the limiting groove (301a), a driven arc plate (302b) arranged on the spring (302a), and a driven block (302c) arranged on the outer side of the driven arc plate (302b); The driven block (302c) and the triangular plate (301c) cooperate with each other.

9. The elbow joint clamping device according to claim 7, characterized in that: The sliding assembly (303) comprises a sliding groove (303a) arranged on the lower surface of the clamping seat (102) and a pushing block (303b) arranged in the sliding groove (303a).

10. The elbow joint clamping device according to claim 7, characterized in that: It also includes an extrusion assembly (304), the extrusion assembly (304) including a thread groove (304a) arranged on the lower side of the clamping seat (102), a knob (304b) in the thread groove (304a), and an inclined arc surface (304c) arranged on the inner wall of the knob (304b).

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