Locking and clamping mechanism of flaring device

Abstract

The utility model discloses a locking and clamping mechanism of a flaring device. The locking and clamping mechanism comprises a locking and clamping assembly and a locking block. The locking and clamping assembly is used for fixing the locking block so as to fix the pipe, so that the locking and clamping assembly is installed on the flaring device to facilitate flaring operation of the flaring device; and the locking block is used for locking and fixing the pipe. The lock clamp assembly is provided with a first lock clamp body, a second lock clamp body, a connecting plate, a wrench, a baffle plate and an elastic body; one end of the first lock clamp body and one end of the second lock clamp body are mutually hinged and matched, the other opposite ends of the first lock clamp body and the second lock clamp body are movably matched, a cavity structure is defined by the middle positions of the first lock clamp body and the second lock clamp body so that the lock block can be conveniently placed, and the inner walls of the first lock clamp body and the second lock clamp body and the outer wall of the lock block are mutually fixed and positioned through concave-convex positioning structures. One end of the connecting plate is hinged to the first lock clamp body, and the other end is hinged to the wrench; the end, hinged to the connecting plate, of the wrench is matched with one end of the second lock clamp body. According to the technical scheme, the lock block is optimized, so that positioning of the lock block is facilitated, and shaking of the baffle plate is avoided.

Description

Technical Field

[0001] The utility model relates to an accessory of a mouth expander, in particular to a locking and clamping mechanism used on the mouth expander for locking and clamping pipes. Background Art

[0002] In the existing expander lock clamp structure, one lock clamp can be replaced with lock blocks of different specifications to meet the processing requirements of pipes of different specifications. The lock block has a threaded hole and is fixed in the lock clamp body by screws. During the replacement of the lock block, it is not easy to align the screw with the threaded hole because the lock block has no limit in the circumferential direction.

[0003] In the existing expander lock clamp structure, the lock clamp stopper is skewed under the action of spring force, which makes it impossible to accurately determine whether the insertion depth meets the standard when the pipe is inserted into the lock clamp. At the same time, during the expansion process of the expander, the lock clamp stopper will swing continuously under the action of spring force, making abnormal noises because the cone head of the expansion pipe is eccentrically arranged. Utility Model Content

[0004] The utility model aims to provide a lock clamp mechanism for an expander, and solves the technical problem of optimizing a lock block to facilitate the positioning of the lock block and avoid shaking of a stop plate.

[0005] The expander locking clamp mechanism comprises a locking clamp assembly and a locking block; wherein the locking clamp assembly is designed with a first locking clamp body, a second locking clamp body, a connecting lever, a wrench, a blocking lever, and an elastic body; one end of the first locking clamp body and the second locking clamp body are hingedly matched with each other, and the other ends thereof are movably matched with each other, and the middle position of the first locking clamp body and the second locking clamp body forms a cavity structure for arranging the locking block, and the inner walls of the first locking clamp body and the second locking clamp body and the outer wall of the locking block are fixedly positioned with each other through a concave and convex positioning structure; one end of the connecting lever is hinged on the first locking clamp body, and the other end is hinged on the wrench; the wrench cooperates with one end of the second locking clamp body at the end hinged to the connecting lever; the first locking clamp body and the second locking clamp body have a blocking lever at the mutually hinged position, and the second locking clamp body has an elastic hole, in which an elastic body is arranged, and the elastic body is in contact with the side of the blocking lever.

[0006] The other end of the first locking clamp body is a first bite portion, and the other end of the second locking clamp body is a second bite portion. The first bite portion and the second bite portion are both L-shaped structures that are staggered and matched with each other to achieve bite assembly.

[0007] The inner walls of the first locking clamp body and the second locking clamp body have grooves, and the outer wall of the locking block has protrusions, and the grooves and protrusions cooperate with each other.

[0008] The inner walls of the first locking clamp body and the second locking clamp body have protrusions, and the outer wall of the locking block has a groove, and the groove and the protrusion cooperate with each other.

[0009] The end of the wrench hinged to the connecting plate is a pressing portion, and the pressing portion is pressed and movably matched with the other end of the second locking clamp body. The wrench is L-shaped or arc-shaped as a whole.

[0010] The locking block is formed by splicing at least two single locking bodies together.

[0011] The first locking clamp body and the second locking clamp body have screw holes penetrating the side walls at positions cooperating with the locking block, and screws are arranged in the screw holes.

[0012] The first locking clamp body and one end of the second locking clamp body are hingedly connected to each other through a hinge shaft; the extrusion part is fixed to the second engaging part of the second locking clamp body through a fixing pin and a fixing hole.

[0013] The two ends of the connecting plate are respectively hingedly matched with the first engaging part and the wrench through the hinge shaft; a retaining ring and a washer are arranged at the position of the hinge shaft; and the end of the connecting plate is located between the retaining ring and the washer.

[0014] The beneficial effects of the utility model are as follows: the inner walls of the first locking clamp body and the second locking clamp body and the outer wall of the locking block are fixedly positioned with each other through the concave and convex positioning structures, thereby ensuring the mutual positioning of the two locking clamp bodies and the locking block, so that the screw holes on the locking clamp bodies can be aligned with the screw holes on the locking block, thereby facilitating the screws to fix the two locking clamp bodies and the lock buckle as a whole; by arranging an elastic body on the above-mentioned baffle plate, the baffle plate is limited and fixed, thereby avoiding the swing of the baffle plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of a combination of a locking clip assembly and a locking block;

[0016] Figure 2 is a schematic diagram of the locking clip assembly being separated from the locking block;

[0017] Figure 3 is a schematic diagram showing the cooperation between two lock clamp bodies and a lock block;

[0018] Figure 4 is a schematic diagram showing the blocking plate from another angle of the combination of the locking clip assembly and the locking block;

[0019] Figure 5 yes Figure 4 Schematic diagram of the exploded display baffle;

[0020] Figure 6 yes Figure 5 A schematic diagram from another angle;

[0021] Figure 7 It is a schematic diagram showing the coordination of the baffle plate, the elastic body, and the second lock clamp body;

[0022] Figure 8 yes Figure 1 Schematic diagram of the decomposition of

[0023] In the picture

[0024] 1. Locking clip assembly;

[0025] 11. first locking clamp body, 111. first hinged portion, 112. first engaging portion;

[0026] 12. second locking clamp body, 121. second hinged portion, 122. second engaging portion;

[0027] 13. Continuous pull;

[0028] 14. Wrench, 141. Extrusion unit;

[0029] 15. Block lever;

[0030] 16. Elastomer;

[0031] 17. Elastic hole;

[0032] 181. retaining ring, 182. washer, 183. fixing pin, 184. screw, 185. protrusion, 186. groove, 187. screw hole, 188. hinge shaft;

[0033] 2. Lock block, 21. Single lock body. DETAILED DESCRIPTION

[0034] Please refer to Figures 1 to 8 The expander locking mechanism in the figure is designed with a locking clamp assembly 1 and a locking block 2; the locking clamp assembly 1 is used to fix the locking block 2 to fix the pipe, so that it is convenient for the expander to perform the expanding operation; the locking block 2 is used to lock and fix the pipe. In practical applications, the above components can be further optimized, such as optimizing local components or adding other components.

[0035] The locking clamp assembly 1 in the figure is designed with a first locking clamp body 11, a second locking clamp body 12, a connecting plate 13, a wrench 14, a blocking plate 15, and an elastic body 16; wherein the first locking clamp body 11 and the second locking clamp body 12 form a structure in which one end is axially connected and the other end is bitten, so that the interior is enclosed to form a hollow cavity structure to lock the locking block 2; the connecting plate 13 is used to make the first locking clamp body 11 and the wrench 14 form a hinged relationship so as to clamp and fix the first locking clamp body 11 and the second locking clamp body 12 at this position; the wrench 14 is used to clamp the second locking clamp body 12 to prevent the second locking clamp body 12 and the first locking clamp body 11 from loosening and causing the locking block 2 to detach; the function of the blocking plate 15 is the same as the existing one; the elastic body 16 is used to limit the movement of the blocking plate 15 to prevent it from swinging. The first locking clamp body 11 in the figure is respectively designed with a first hinged portion 111 and a first bite portion 112 at the ends of both ends, and the second locking clamp is also designed with a second hinged portion 121 and a second bite portion 122 at the ends of both ends. In this way, the hinged assembly of the two hinged portions is achieved by matching the hinge shaft 188 at the first hinged portion 111 and the second hinged portion 121. At the same time, the first bite portion 112 and the second bite portion 122 are both designed to be L-shaped structures and are staggered with each other to achieve the bite assembly in the figure, that is, active fit. In order to achieve the mutual fixed positioning of the locking clamp body and the locking block 2, a concave-convex positioning structure can be designed between the locking clamp body and the locking block 2, such as a groove 186 is designed on the inner wall of the first locking clamp body 11 and the second locking clamp body 12, and a protrusion 185 is designed on the outer wall of the locking block 2, so that the groove 186 and the protrusion 185 cooperate with each other; or a protrusion 185 is designed on the inner wall of the first locking clamp body 11 and the second locking clamp body 12, and a groove 186 is designed on the outer wall of the locking block 2, and similarly the groove 186 and the protrusion 185 cooperate with each other.

[0036] The connecting plate 13 in the figure is a flat plate structure, which has two and is arranged on both sides of the lock clamp body, so that one end of the connecting plate 13 can be hinged to the first bite portion 112 of the first lock clamp body 11 through the hinge shaft 188, and the other end is hinged to the wrench 14. In order to facilitate the fixation of the hinge shaft 188, a retaining ring 181 and a washer 182 can be arranged at the hinge position of the hinge shaft 188, so that the end of the connecting plate 13 is between the retaining ring 181 and the washer 182.

[0037] The wrench 14 in the figure is an L-shaped or arc-shaped structure as a whole, so that the end of the wrench hinged to the connecting plate 13 can be called an extrusion portion 141, so that the extrusion portion 141 can be inserted into the second bite portion 122 to cooperate with the fixing pin 183 and the fixing hole to realize the hinged assembly of the wrench 14 and the second bite portion 122 of the second lock clamp body 12.

[0038] The baffle 15 in the figure is designed at the hinged position where the first lock clamp body 11 and the second lock clamp body 12 are located at the hinged part. The baffle 15 is a baffle-shaped structure as a whole. In order to limit and fix the baffle 15, the second lock clamp body 12 at the corresponding position is designed with an elastic hole 17 structure and a matching elastic part such as a spring, so that the spring can form a resistance assembly with the baffle 15.

[0039] The locking block 2 in the figure is formed by two semicircular single locking bodies 21 spliced ​​together. In practical applications, the locking block 2 can also be formed by multiple single locking bodies 21. In order to fix the locking block 2 with screws 184, the first locking clamp body 11 and the second locking clamp body 12 have screw holes 187 penetrating the side walls at the positions cooperating with the locking block 2, and the screws 184 are arranged in the screw holes 187.

[0040] The specific embodiments described above are only used to explain the present technical solution and are not used to limit the present technical solution. In the description of the present technical solution, it should be noted that the terms such as "upper" and "inner" indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present technical solution 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 cannot be understood as a limitation on the present technical solution.

[0041] At the same time, in the description of this technical solution, it should be noted that, unless otherwise clearly specified and limited, the terms "fixed" and "matched" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this technical solution can be understood according to specific circumstances.

[0042] Although embodiments of the present technical solution have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present technical solution, and that the scope of the present technical solution is defined by the appended claims and their equivalents.

Claims

1. The lock and clamp mechanism of the expander is characterized by: The invention comprises a locking clamp assembly (1) and a locking block (2); wherein the locking clamp assembly (1) is designed with a first locking clamp body (11), a second locking clamp body (12), a connecting lever (13), a wrench (14), a blocking lever (15), and an elastic body (16); one end of the first locking clamp body (11) and the second locking clamp body (12) are hingedly connected to each other, and the other ends thereof are movably connected to each other; the middle position of the first locking clamp body (11) and the second locking clamp body (12) forms a cavity structure for accommodating the locking block (2); the inner wall of the first locking clamp body (11) and the second locking clamp body (12) and the outer wall of the locking block (2) are connected to each other. The two locking members are mutually fixed and positioned by means of a concave and convex positioning structure; one end of the connecting plate (13) is hinged on the first locking clamp body (11), and the other end is hinged on the wrench (14); the wrench (14) cooperates with one end of the second locking clamp body (12) at the end hinged to the connecting plate (13); the first locking clamp body (11) and the second locking clamp body (12) have a stopper (15) at the mutually hinged position, and the second locking clamp body (12) has an elastic hole (17), an elastic body (16) is arranged in the elastic hole (17), and the elastic body (16) is in contact with the side of the stopper (15).

2. The expander locking and clamping mechanism according to claim 1, characterized in that: The other end of the first locking clamp body (11) is a first bite portion (112), and the other end of the second locking clamp body (12) is a second bite portion (122). The first bite portion (112) and the second bite portion (122) are both L-shaped structures that interlock and fit with each other to achieve bite assembly.

3. The expander locking and clamping mechanism according to claim 2, characterized in that: The inner walls of the first locking clamp body (11) and the second locking clamp body (12) have grooves (186), and the outer wall of the locking block (2) has a protrusion (185), and the grooves (186) and the protrusions (185) cooperate with each other.

4. The expander locking and clamping mechanism according to claim 2, characterized in that: The inner walls of the first locking clamp body (11) and the second locking clamp body (12) have protrusions (185), and the outer wall of the locking block (2) has a groove (186), and the groove (186) and the protrusion (185) cooperate with each other.

5. The expander locking and clamping mechanism according to claim 3 or 4, characterized in that: The end of the wrench hinged to the connecting plate (13) is a pressing portion (141), and the pressing portion (141) is pressed and movably matched with the other end of the second locking clamp body (12). The wrench (14) is L-shaped or arc-shaped as a whole.

6. The expander locking and clamping mechanism according to claim 5, characterized in that: The locking block (2) is formed by at least two single locking bodies (21) being spliced ​​together.

7. The expander locking and clamping mechanism according to claim 6, characterized in that: The first locking clamp body (11) and the second locking clamp body (12) have screw holes (187) penetrating the side walls at positions where they cooperate with the locking block (2), and screws (184) are disposed in the screw holes (187).

8. The expander locking and clamping mechanism according to claim 7, characterized in that: The first locking clamp body (11) and one end of the second locking clamp body (12) are hingedly connected to each other via a hinge shaft (188); the extrusion portion (141) is fixed to the second engaging portion (122) of the second locking clamp body (12) via a fixing pin (183) and a fixing hole.

9. The expander locking and clamping mechanism according to claim 8, characterized in that: The two ends of the connecting plate (13) are respectively hingedly matched with the first engaging portion (112) and the wrench (14) via a hinge shaft (188); a retaining ring (181) and a washer (182) are arranged at the position of the hinge shaft (188); and the end of the connecting plate (13) is located between the retaining ring (181) and the washer (182).

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