U-shaped pipe clamping device

Abstract

The U-shaped pipe clamping device comprises a base, a matching groove used for abutting against the outer bent side of a bent part of a U-shaped pipe is formed in the base, two clamping blocks which are symmetrically arranged are rotationally connected to the base, and the two clamping blocks are connected with a driving assembly used for pushing the two clamping blocks to rotate so that the two clamping blocks can be opened and closed. The head portions of the two clamping blocks are provided with matching hooks which can stretch into the matching grooves when the two clamping blocks are folded and are used for abutting against the inner bent side of the bent portion of the U-shaped pipe, the driving assembly comprises a sliding base connected to the base in a sliding mode, the sliding base is connected with a pushing rod used for pushing the sliding base to slide, and the tail portions of the two clamping blocks are provided with inclined grooves which are obliquely formed. The sliding seat is provided with a guide shaft which is inserted into the inclined groove and pushes the two clamping blocks to be opened when the sliding seat slides, an elastic piece which pushes the sliding seat to reset after the sliding seat slides and enables the two clamping blocks to be closed is arranged between the sliding seat and the base, and the U-shaped pipe clamping device is firmer in clamping and more stable in structure.

Description

Technical Field

[0001] The invention particularly relates to a U-shaped pipe clamping device. Background Art

[0002] In the field of industrial production, the fixing and supporting of pipelines is a vital task, and the stability of pipeline clamping directly affects the processing accuracy. As a common pipeline structure, U-shaped tubes are often used in heat exchangers, boilers, reactors and other equipment to compensate for thermal expansion and contraction caused by temperature changes, reduce pipeline stress, and extend equipment life. However, the special shape of the U-shaped tube brings challenges to its fixation. Traditional pipe clamps or brackets are often difficult to adapt to the complex geometric shape of the U-shaped tube bend, which easily causes local uneven force. Therefore, the inventors have previously developed a clamping and locking device for U-shaped tubes, but this structure still has defects such as loose clamping and unstable structure.

[0003] The present invention is just produced based on the above-mentioned shortcomings. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a U-shaped pipe clamping device with firmer clamping and more stable structure.

[0005] The invention is realized by the following technical solutions:

[0006] A U-shaped tube clamping device comprises a base, the base is provided with a matching groove for abutting against the outer curved side of the curved portion of the U-shaped tube, the base is rotatably connected to two symmetrically arranged clamping blocks, the two clamping blocks are connected to a driving assembly for pushing the two clamping blocks to rotate so as to open and close the two clamping blocks, the heads of the two clamping blocks are provided with matching hooks that can extend into the matching groove when the two clamping blocks are closed and are used to abut against the inner curved side of the curved portion of the U-shaped tube, the driving assembly comprises a sliding seat slidably connected to the base, the sliding seat is connected to a pushing rod for pushing the sliding seat to slide, the tails of the two clamping blocks are provided with inclined grooves, the sliding seat is provided with a guide shaft inserted into the inclined groove to push the two clamping blocks to open when the sliding seat slides, and an elastic member is provided between the sliding seat and the base to push the sliding seat to reset after the sliding seat slides and to close the two clamping blocks.

[0007] As described above, in the U-shaped pipe clamping device, the side wall of the base is provided with a matching hole which is connected with the matching groove and is used for the matching hook of the clamping block to extend into.

[0008] In the U-shaped pipe clamping device as described above, the sliding seat is connected to two symmetrically arranged pushing rods.

[0009] In the U-shaped tube clamping device as described above, two elastic members are provided, and the two elastic members and the two pushing rods are provided correspondingly.

[0010] As described above, the U-shaped tube clamping device, the base is provided with a accommodating cavity and a sliding groove connected to the accommodating cavity, the sliding seat includes a sliding block that can slide in the sliding groove, the lower part of the sliding block is located in the accommodating cavity and the lower part of the sliding block is connected to two mounting feet, the pushing rod is connected to the mounting feet, one end of the elastic member abuts against the mounting feet and the other end abuts against the side wall of the accommodating cavity.

[0011] In the U-shaped pipe clamping device as described above, the base is provided with a vertical slot hole arranged vertically, and the guide shaft is inserted into the vertical slot hole.

[0012] In the U-shaped tube clamping device as described above, the matching hook has a convex arc surface that matches the shape of the inner curved side of the curved portion of the U-shaped tube.

[0013] In the U-shaped pipe clamping device as described above, the inclined groove includes an arc segment at the bottom and a straight segment at the top, and the angle α between the tangent direction of the arc segment and the length direction of the straight segment is less than 180°.

[0014] As described above, in the U-shaped pipe clamping device, the base is detachably connected with a front cover plate for covering the accommodating cavity and the sliding groove.

[0015] In the U-shaped pipe clamping device as described above, the vertical slot hole is a through hole, and the base is detachably connected with a side cover plate for covering the vertical slot hole.

[0016] Compared with the prior art, the invention has the following advantages:

[0017] The U-shaped tube clamping device of the present invention is provided with a matching groove for placing the U-shaped tube, and then the head of the clamping block is extended into the matching groove to fix the U-shaped tube in the groove, so that the U-shaped tube can be clamped stably and firmly to prevent the U-shaped tube from escaping from the U-shaped groove. The whole structure is simple and stable and reliable during operation.

[0018] The base of the present invention is provided with a matching hole communicating with the matching groove, so that the four side walls in the matching groove are complete. When the U-shaped tube is placed in the matching groove, it can play a role of preliminary positioning, and then the matching hook of the clamping block enters the matching groove through the matching hole. The matching hook and the matching groove form a channel surrounding the curved portion B of the U-shaped tube, making the entire clamping structure more firm and reliable, and having a more accurate positioning effect;

[0019] The sliding seat of the present invention is connected to two symmetrically arranged pushing rods and is also provided with corresponding elastic parts. The two pushing rods work together to push the sliding seat to slide. This can reduce the working thrust of each pushing rod and make the sliding seat more evenly stressed, thereby improving the stability of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional schematic diagram of the U-shaped tube clamping device of the present invention;

[0021] Figure 2 is a cross-sectional schematic diagram of a U-shaped tube clamping device of the present invention;

[0022] Figure 3 is an exploded schematic diagram of the U-shaped tube clamping device of the present invention;

[0023] Figure 4 It is a partial structural schematic diagram of the U-shaped tube clamping device of the present invention;

[0024] Figure 5 It is a schematic structural diagram of two clamping blocks of the present invention. DETAILED DESCRIPTION

[0025] The invention will be further described below in conjunction with the accompanying drawings:

[0026] The directions described in the specification of the invention, such as "up", "down", "left", "right", "front", "back", etc., are based on the directions of the drawings and are intended to facilitate the description of the relationship between the various components. They do not indicate the unique or absolute positional relationship between the various components. They are only one of the implementation methods of the invention and are not a limitation on its implementation method.

[0027] like Figure 1 and Figure 2 As shown, in this embodiment, a U-shaped tube clamping device is provided, including a base 1, on which a matching groove 11 is provided for abutting against the outer curved side of the curved portion B of the U-shaped tube, the bottom surface of the matching groove 11 is consistent with the contour of the curved portion B of the U-shaped tube, and the groove width of the matching groove 11 is generally consistent with the outer diameter of the U-shaped tube, so that the U-shaped tube can be placed in the matching groove 11 with the curved portion B facing downward, and two clamping blocks 2 symmetrically arranged with respect to each other are rotatably connected to the base 1, as shown in FIG. Figure 2 and Figure 3 As shown, a rotating shaft 18 is provided on the base 1, and the two clamping blocks 2 are both rotatably sleeved on the rotating shaft 18, so that the two clamping blocks 2 can be rotated in opposite directions to open or close;

[0028] like Figures 1 to 3As shown, the two clamping blocks 2 are connected with a driving assembly A for pushing the two to rotate so as to open and close the two clamping blocks. The heads of the two clamping blocks 2 are provided with a matching hook 21 that can extend into the matching groove 11 when the two are closed and is used to abut against the inner curved side of the curved portion of the U-shaped tube. The driving assembly A includes a sliding seat 3 slidably connected to the base 1, and the sliding seat 3 is connected with a pushing rod 4 for pushing the sliding seat 3 to slide. The tails of the two clamping blocks 2 are provided with an inclined groove 22. Since the two clamping blocks 2 are symmetrically arranged, the two clamping blocks 2 The inclined grooves 22 of the two clamping blocks 2 are also symmetrical, that is, the inclined grooves 22 of the two clamping blocks 2 are inclined in opposite directions, and the sliding seat 3 is provided with a guide shaft 31 inserted into the inclined groove 22 and then pushing the two clamping blocks 2 to open when the sliding seat 3 slides, so that when the sliding seat 3 slides in one direction, the heads of the two clamping blocks 2 are opened, and an elastic member 5 is provided between the sliding seat 3 and the base 1 to push the sliding seat 3 to reset after the sliding seat 3 slides and make the two clamping blocks 2 close together, and the sliding seat 3 is pushed to reset by the elastic member 5 after the push rod 4 removes the thrust. In this embodiment, when the sliding seat 3 slides upward, the heads of the two clamping blocks 2 are opened, and after the sliding seat 3 slides upward, the thrust of the push rod 4 is removed, and the heads of the two clamping blocks 2 are closed, and the elastic member 5 still maintains elasticity, so that the closed two clamping blocks 2 remain clamped, and self-locking is achieved; of course, the sliding seat 3 can also slide downward to open the heads of the two clamping blocks 2, and the inclination direction of the inclined groove 22 is set accordingly. Through the above structure, the U-shaped tube can be clamped stably and firmly to prevent the U-shaped tube from escaping from the U-shaped groove. The whole structure is simple and stable and reliable during operation.

[0029] As a preferred solution, Figures 1 to 3 As shown, a mating hole 12 is provided on the side wall of the base 1, which is connected with the mating groove 11 and is used for the mating hook 21 of the clamping block 2 to extend into, so that the four side walls in the mating groove 11 are complete. When the U-shaped tube is placed in the mating groove 11, it can play a role in preliminary positioning, and then the mating hook 21 of the clamping block 2 enters the mating groove 11 through the mating hole 12. The mating hook 21 and the mating groove 11 form a channel surrounding the curved portion B of the U-shaped tube, making the entire clamping structure more firm and reliable while having a more precise positioning effect.

[0030] As a preferred solution, Figures 1 to 3 As shown, the sliding seat 3 is connected to two symmetrically arranged push rods 4. In addition, two elastic members 5 are provided, and the two elastic members 5 and the two push rods 4 are correspondingly arranged. The two push rods 4 work together to push the sliding seat 3 to slide, which can reduce the working thrust of each push rod 4 and make the sliding seat 3 more evenly stressed, thereby improving the stability of the structure.

[0031] like Figure 2 and Figure 3As shown, the base 1 is provided with a accommodating cavity 13 and a sliding groove 14 connected to the accommodating cavity 13, the sliding seat 3 includes a sliding block 32 that can slide in the sliding groove 14, the lower part of the sliding block 32 is located in the accommodating cavity 13 and the lower part of the sliding block 32 is connected to two mounting feet 33, the pushing rod 4 is connected to the mounting feet 33, one end of the elastic member 5 rests on the mounting feet 33 and the other end rests on the side wall of the accommodating cavity 13, which can make the structure more stable and the entire structure more compact.

[0032] As a preference, Figure 3 As shown, the base 1 is detachably connected with a front cover plate 16 for covering the accommodating cavity 13 and the sliding groove 14 to better protect the mechanical structure in the accommodating cavity 13 .

[0033] In order to make the sliding seat 3 slide more smoothly, Figure 2 and Figure 3 As shown, the base 1 is provided with a vertical slot 15 arranged vertically, and the guide shaft 31 is inserted into the vertical slot 15, so that the sliding seat 3 can support and guide during the sliding process, and the sliding is smoother. At the same time, the guide shaft 31 passes through the inclined groove 22 and is inserted into the vertical slot 15, which cleverly utilizes the space and reduces the structural volume.

[0034] Preferably, the vertical slot hole 15 is a through hole, and the base 1 is detachably connected with a side cover plate 17 for covering the vertical slot hole 15 to play a protective role and facilitate the processing of the vertical slot hole 15.

[0035] As a preference, Figure 2 and Figure 4 As shown, the mating hook 21 has a convex arc surface 211 that matches the shape of the inner curved side of the U-shaped tube bending portion B, so that the inner surface of the closed mating hook 21 is consistent with the contour shape of the inner curved side of the U-shaped tube bending portion B, thereby improving the stability of clamping and the accuracy of positioning.

[0036] As a preferred solution, Figure 4 As shown, the inclined groove 22 includes an arc segment 221 located at the bottom and a straight segment 222 located at the top. The angle α between the tangent direction of the arc segment 221 and the length direction of the straight segment 222 is less than 180°. In this way, when the sliding seat 3 slides upward, the guide shaft 31 first slides smoothly in the arc segment 221, so that the two clamping blocks 2 are slowly opened. When the two are opened to a preset amplitude, the guide shaft 31 then slides to the straight segment 222. At this time, the clamping block 22 remains in an open state, making the structure more stable.

[0037] The above is only an embodiment of the present invention, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A U-shaped tube clamping device, characterized in that: The invention comprises a base (1), the base (1) being provided with a matching groove (11) for abutting against the outer curved side of the curved part of the U-shaped tube, the base (1) being rotatably connected with two clamping blocks (2) arranged symmetrically with each other, the two clamping blocks (2) being connected with a driving assembly (A) for driving the two clamping blocks (2) to rotate so as to open and close the two clamping blocks, the heads of the two clamping blocks (2) being provided with matching hooks (21) which can extend into the matching groove (11) and abut against the inner curved side of the curved part of the U-shaped tube when the two clamping blocks (2) are closed, the driving assembly (A) comprising a sliding connection A sliding seat (3) is connected to the base (1), and a push rod (4) is connected to the sliding seat (3) for pushing the sliding seat (3) to slide. The tails of the two clamping blocks (2) are both provided with inclined grooves (22). The sliding seat (3) is provided with a guide shaft (31) inserted into the inclined groove (22) and then pushing the two clamping blocks (2) to open when the sliding seat (3) slides. An elastic member (5) is provided between the sliding seat (3) and the base (1) for pushing the sliding seat (3) to reset after the sliding seat (3) slides and closing the two clamping blocks (2).

2. The U-shaped tube clamping device according to claim 1, characterized in that: A matching hole (12) is provided on the side wall of the base (1) and is communicated with the matching groove (11) and is used for the matching hook (21) of the clamping block (2) to extend into.

3. The U-shaped tube clamping device according to claim 1, characterized in that: The sliding seat (3) is connected to two symmetrically arranged pushing rods (4).

4. The U-shaped tube clamping device according to claim 3, characterized in that: Two elastic members (5) are provided, and the two elastic members (5) and the two pushing rods (4) are provided correspondingly.

5. The U-shaped tube clamping device according to claim 4, characterized in that: The base (1) is provided with a receiving cavity (13) and a sliding groove (14) connected to the receiving cavity (13); the sliding seat (3) includes a sliding block (32) capable of sliding in the sliding groove (14); the lower part of the sliding block (32) is located in the receiving cavity (13) and the lower part of the sliding block (32) is connected to two mounting feet (33); the pushing rod (4) is connected to the mounting feet (33); one end of the elastic member (5) abuts against the mounting feet (33) and the other end abuts against the side wall of the receiving cavity (13).

6. The U-shaped tube clamping device according to claim 1, characterized in that: The base (1) is provided with a vertical slot hole (15) arranged vertically, and the guide shaft (31) is inserted into the vertical slot hole (15).

7. The U-shaped tube clamping device according to claim 1, characterized in that: The matching hook (21) has a convex arc surface (211) matching the shape of the inner curved side of the U-shaped tube bending portion.

8. The U-shaped tube clamping device according to claim 1, characterized in that: The inclined groove (22) comprises an arc segment (221) at the bottom and a straight segment (222) at the top, and the angle α between the tangent direction of the arc segment (221) and the length direction of the straight segment (222) is less than 180°.

9. The U-shaped tube clamping device according to claim 5, characterized in that: The base (1) is detachably connected to a front cover plate (16) for covering the accommodating cavity (13) and the sliding groove (14).

10. The U-shaped tube clamping device according to claim 6, characterized in that: The vertical slot hole (15) is a through hole, and the base (1) is detachably connected with a side cover plate (17) for covering the vertical slot hole (15).

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