Pipe fitting clamping mechanism

Abstract

The utility model relates to a pipe fitting clamping mechanism which comprises a fixed seat, a pawl, a non-return pawl and a check block. The pawl and the non-return pawl are rotationally connected with the fixed seat respectively; a first tooth part is arranged on the pawl; a second tooth part is arranged on the non-return claw; the stop block is movably connected with the fixed seat or the pawl; wherein the pawl and the non-return claw are rotated around the fixed seat, the first tooth part hooks the second tooth part, and the fixed seat and the pawl are encircled to form an annular pipe sleeve; the stop block is arranged on the inner side of the annular pipe sleeve; the check blocks are parallel to the axis of the annular pipe sleeve. By means of the check blocks, the contact area between the annular pipe fitting and the square pipe is increased, and the position of the square pipe is better fixed. The pipe fitting clamping mechanism can be flexibly switched between a round pipe clamping state and a square pipe clamping state so as to stably clamp the round pipe or the square pipe, and the universality of clamping and fastening the pipe fitting is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipe fitting fixing equipment technical field especially relates to pipe fitting clamping mechanism. BACKGROUND

[0002] Pipe fitting sets up clamping mechanism fixed pipe fitting's position when processing and subsequent installation, prevents pipe fitting and moves, influences processing and installation.

[0003] In order to stabilize clamping cylindrical pipe fitting, pipe fitting clamping mechanism will set up the arc surface that sticks to the outer surface of the circular pipe arc, the arc surface sticks to the outer surface of the circular pipe, and the contact area is big, and clamping is more stable. But when clamping square tube, the arc surface of pipe fitting clamping mechanism cannot stick to the flat outer surface of square tube, leading to poor clamping stability. In order to clamp square tube and circular tube, at least two sets of pipe fitting clamping mechanism need to be set.

[0004] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present disclosure, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. UTILITY MODEL CONTENT

[0005] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a pipe fitting clamping mechanism to improve the versatility of the pipe fitting clamping mechanism.

[0006] The technical scheme of the utility model is as follows:

[0007] The pipe fitting clamping mechanism comprises a fixed seat, a pawl, a check claw and a stop block.

[0008] The pawl and the check claw are respectively rotatably connected to the fixed seat; the pawl is provided with a first tooth portion; the check claw is provided with a second tooth portion;

[0009] The stop block is movably connected to the fixed seat or the pawl.

[0010] Wherein, the pawl and the check claw are rotated around the fixed seat, the first tooth portion hooks the second tooth portion, and the fixed seat and the pawl form an annular pipe sleeve; the stop block is arranged on the inner side of the annular pipe sleeve; the stop block is parallel to the axis of the annular pipe sleeve.

[0011] The fixed seat and the pawl are respectively provided with grooves; the grooves are arranged on the inner side of the annular pipe sleeve; the length direction of the groove is parallel to the axis of the annular pipe sleeve.

[0012] Along the rotation direction of the pawl, at least two first tooth portions are arranged on the pawl.

[0013] Threaded holes are formed on the fixing base and the pawl; the stopper is movably connected to the fixing base and the pawl through a threaded fastener.

[0014] Avoidance grooves are formed on the pawl and the check claw respectively, and the threaded fastener passes through the avoidance grooves.

[0015] The check claw is rotatably connected to the fixing base through a rotating shaft; a torsion spring is arranged on the rotating shaft; and the torsion spring drives the check claw to rotate towards the side close to the pawl.

[0016] A connecting block is arranged between the stopper and the threaded fastener; the connecting block is connected to the threaded fastener; and the connecting block is rotatably connected to the stopper.

[0017] The shape of the end of the connecting block close to the threaded fastener is consistent with the shape of the groove.

[0018] The stopper is arranged in four, and the four stoppers are arranged in a square shape.

[0019] The fixing base is extended to a handle at the side away from the pawl.

[0020] The beneficial technical effects of the utility model are as follows:

[0021] (1) The pipe clamping mechanism in the utility model, the first tooth part and the second tooth part are clamped, so that the fixing base and the pawl form an annular pipe sleeve. The inner surface of the arc of the annular pipe sleeve can be consistent with the outer surface of the circular pipe, that is, the contact area between the annular pipe sleeve and the circular pipe is relatively large. The large contact area helps to disperse and reduce the stress concentration phenomenon caused by external force. When the circular pipe is impacted or vibrated by external force, the annular pipe sleeve can better maintain the stability and position accuracy of the circular pipe. In addition, the inner wall of the annular pipe sleeve is movably connected with the stopper. When the pipe clamping mechanism fixes the square pipe, the stopper can be arranged on the annular pipe sleeve. Through the stopper, the contact area between the annular pipe and the square pipe is increased, so that the position of the square pipe is better fixed. That is, the pipe clamping mechanism of the utility model can be flexibly switched between clamping the circular pipe and the square pipe, so as to stably clamp the circular pipe or the square pipe and enhance the versatility of the pipe clamping and fastening.

[0022] (2) Further, the stopper is threadedly connected to the fixing base and the pawl through a threaded fastener. The threaded connection is connected through the mutual engagement of threads, and has high reliability. This connection mode is not easy to loosen, has good shock resistance, and can withstand large tensile and shear forces. The stability of the square pipe support is ensured.

[0023] (3) Further, a connecting block is further arranged between the stopper and the threaded fastener. The connecting block is rotationally connected with the stopper, so that when the stopper supports the square pipe, the stopper is always attached to the outer surface of the square pipe. The contact area between the annular pipe sleeve and the square pipe is ensured, and the stability of the annular pipe sleeve is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 A front view structural schematic diagram of the pipe clamping mechanism of the utility model is shown.

[0025] Figure 2 A front view structural schematic diagram of the pipe clamping mechanism of the utility model is shown.

[0026] Figure 3 A vertical section structural schematic diagram of the pipe clamping mechanism of the utility model is shown.

[0027] Markings in the drawings:

[0028] 1, fixed seat; 11, groove; 12, threaded hole; 13, handle; 2, pawl; 21, first tooth part; 22, position avoiding groove; 3, annular pipe sleeve; 4, rotating shaft; 5, non-return pawl; 51, second tooth part; 61, stopper; 62, connecting block; 63, threaded fastener. DETAILED DESCRIPTION

[0029] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, please refer to the drawings. It should be known that the structure, proportion, size and the like shown in the drawings attached to the present specification are only used to cooperate with the content disclosed in the specification, so that people skilled in the art can understand and read, and are not used to limit the limiting conditions of the implementation of the utility model, so they do not have the technical essence, any modification of structure, change of proportion relationship or adjustment of size, as long as it does not affect the effect and purpose that the utility model can produce, it should still fall within the scope covered by the technical content disclosed by the utility model.

[0030] In the description of the utility model, the orientation or position relationship indicated by the limiting terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and is not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model.

[0031] Figure 1The utility model discloses a pipe clamping mechanism, the main view structural schematic drawing when clamping round pipe is shown. Figure 2 The utility model discloses a pipe clamping mechanism, the main view structural schematic drawing when clamping square pipe is shown. Figure 3 The utility model discloses a pipe clamping mechanism, the vertical section structural schematic drawing when clamping square pipe is shown. Figure 2 And Figure 3 , pipe clamping mechanism, pipe clamping mechanism includes fixed seat 1, pawl 2, check claw 5 and stopper 61.Pawl 2 and check claw 5 are rotated and are connected fixed seat 1 respectively.Pawl 2 is provided with first tooth part 21.Check claw 5 is provided with second tooth part 51.Stopper 61 is movably connected fixed seat 1 or pawl 2.Among them, rotating pawl 2 and check claw 5 around fixed seat 1, first tooth part 21 hooks second tooth part 51, and fixed seat 1 and pawl 2 form annular pipe sleeve 3 in combination.The arc inner surface of annular pipe sleeve 3 can be attached to the outer surface of the round pipe, that is, the contact area between the annular pipe sleeve 3 and the round pipe is relatively large.The larger contact area helps to disperse and reduce stress concentration phenomenon caused by external force.When the round pipe is impacted or vibrated by external force, the annular pipe sleeve 3 can better maintain the stability and position accuracy of the round pipe.The stopper 61 is arranged on the inner side of the annular pipe sleeve 3.The stopper 61 is parallel to the axis of the annular pipe sleeve 3.When the pipe clamping mechanism fixes the square pipe, the stopper 61 can be arranged on the annular pipe sleeve 3.Through the stopper 61, the contact area between the annular pipe and the square pipe is increased to better fix the position of the square pipe.That is, the pipe clamping mechanism of the utility model can be flexibly switched between clamping the round pipe and the square pipe to stably clamp the round pipe or the square pipe and enhance the versatility of the pipe clamping and fastening.

[0032] Please refer to Figure 3 Along the rotating direction of pawl 2, at least two first tooth parts 21 are arranged on pawl 2.Second tooth part 51 hooks different first tooth parts 21, and the diameter of annular pipe sleeve 3 changes accordingly to enclose annular pipe of different specifications, thereby improving the versatility of the pipe clamping mechanism.

[0033] In the embodiment, check claw 5 is rotatably connected to fixed seat 1 through pivot 4.A torsional spring is arranged on pivot 4.The torsional spring drives check claw 5 to rotate towards the side close to pawl 2.The automatic hooking of first tooth part 21 and second tooth part 51 is realized through the torsional spring.

[0034] Please refer to Figure 3 Threaded holes 12 are formed in fixed seat 1 and pawl 2.Stopper 61 is movably connected to fixed seat 1 and pawl 2 through threaded fastener 63.Threaded connection is realized through the mutual engagement between threads, which has high reliability.This connection mode is not easy to loosen and has good shock resistance, and can withstand large tensile and shear forces, thereby ensuring the stability of square pipe support.

[0035] Preferably, the pawl 2 and the check claw 5 are respectively provided with an avoiding slot 22 for the threaded fastener 63 to pass through. The threaded fastener 63 is avoided from interfering with the pawl 2 or the check claw 5.

[0036] More preferably, the fixed seat 1 is provided with the handle 13 on the side away from the pawl 2. The handle 13 is convenient for the operator or other equipment to hold.

[0037] Please refer to Figure 3 The connecting block 62 is provided between the stopper 61 and the threaded fastener 63. The connecting block 62 connects the threaded fastener 63. The connecting block 62 is rotatably connected with the stopper 61. The connecting block 62 is rotatably connected with the stopper 61, which ensures that the stopper 61 always adheres to the outer surface of the square tube when supporting the square tube. The contact area between the annular sleeve 3 and the square tube is ensured, and the stability of the annular sleeve 3 is ensured.

[0038] In the embodiment, the fixed seat 1 and the pawl 2 are respectively provided with the groove 11. The groove 11 is arranged on the inner side of the annular sleeve 3. The length direction of the groove 11 is parallel to the axis of the annular sleeve 3. The shape of the end of the connecting block 62 close to the threaded fastener 63 is matched with the shape of the groove 11, which facilitates the connecting block 62 to be clamped into the groove 11 and enhances the stability of the connection between the connecting block 62 and the fixed seat 1 and the pawl 2.

[0039] Preferably, the four stoppers 61 are arranged in a square shape. The four stoppers 61 can respectively adhere to the four outer surfaces of the square tube to stably clamp the square tube.

[0040] The specific working process of the utility model is as follows:

[0041] When clamping the round tube, the operator rotates the check claw 5 against the elastic force of the torsional spring, and rotates the pawl 2 around the fixed seat 1 at the same time, so that the second tooth part 51 is away from the first tooth part 21. Then the pipe clamping mechanism is moved until the round tube is close to the groove 11. Then the pawl 2 is rotated around the fixed seat 1, so that the second tooth part 51 approaches the first tooth part 21, until the fixed seat 1 and the pawl 2 surround the round tube. At this time, the operator releases the check claw 5, the torsional spring drives the check claw 5 to rotate, until the second tooth part 51 contacts and hooks the first tooth part 21, and the clamping of the round tube is completed.

[0042] When clamping the square tube, the operator rotates the check claw 5 against the elastic force of the torsion spring, and rotates the pawl 2 around the fixed seat 1, so that the second tooth part 51 is away from the first tooth part 21. Then the tube clamping mechanism is moved until the square tube is close to the groove 11. The block 61 is connected with the fixed seat 1 and the pawl 2 through the threaded fastener 63. Then the pawl 2 is rotated around the fixed seat 1, so that the second tooth part 51 is close to the first tooth part 21, at this time the block 61 contacts and abuts against the square tube. The operator releases the check claw 5, the torsion spring drives the check claw 5 to rotate until the second tooth part 51 contacts and hooks the first tooth part 21, and the clamping of the square tube is completed.

[0043] The technical features of the above embodiments can be combined in any manner. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described, however, as long as the combinations of the technical features do not contradict each other, they should be considered within the scope of the present disclosure.

[0044] The above embodiments only express several implementation manners of the present application, the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be pointed out that, for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A pipe clamping mechanism, characterized by, The pipe clamping mechanism comprises a fixed seat, a pawl, a check claw and a stop block; The pawl and the check claw are respectively rotatably connected to the fixed seat; the pawl is provided with a first tooth portion; the check claw is provided with a second tooth portion; The stop block is movably connected to the fixed seat or the pawl; Wherein, the pawl and the check claw are rotated around the fixed seat, the first tooth portion hooks the second tooth portion, the fixed seat and the pawl form an annular pipe sleeve, the stop block is arranged on the inner side of the annular pipe sleeve, and the stop block is parallel to the axis of the annular pipe sleeve.

2. The tube gripping mechanism of claim 1, wherein: The fixed seat and the pawl are respectively provided with a groove; the groove is arranged on the inner side of the annular pipe sleeve; the length direction of the groove is parallel to the axis of the annular pipe sleeve.

3. The tube gripping mechanism of claim 1, wherein: Along the rotation direction of the pawl, the pawl is provided with at least two first tooth portions.

4. The pipe gripping mechanism of claim 2, wherein: The fixed seat and the pawl are provided with threaded holes; the stop block is movably connected to the fixed seat and the pawl through a threaded fastener.

5. The pipe gripping mechanism of claim 4, wherein: The pawl and the check claw are respectively provided with an avoidance slot, and the avoidance slot is for the threaded fastener to pass through.

6. The tube gripping mechanism of claim 1, wherein: The check claw is rotatably connected to the fixed seat through a rotating shaft; the rotating shaft is provided with a torsional spring; the torsional spring drives the check claw to rotate towards the side close to the pawl.

7. The pipe gripping mechanism of claim 5, wherein: A connecting block is arranged between the stop block and the threaded fastener; the connecting block connects the threaded fastener; the connecting block is rotatably connected to the stop block.

8. The pipe gripping mechanism of claim 7, wherein: The shape of the end of the connecting block close to the threaded fastener is consistent with the shape of the groove.

9. The tube gripping mechanism of claim 1, wherein: The stop block is provided with four, and the four stop blocks form a square.

10. The pipe gripping mechanism of claim 1, wherein: The fixed seat is provided with a handle on the side away from the pawl.

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