Pipe fitting flange hoisting and fixing device

Abstract

The utility model discloses a pipe fitting flange hoisting and fixing device, which belongs to the technical field of pipe fitting flange transferring and hoisting, and particularly comprises a hoisting main plate body, a grabbing mechanism and a positioning assembly, a flange plate placing groove is arranged in the middle of the bottom of the hoisting main plate body, and a limiting groove is arranged on the hoisting main plate body in the middle of the flange plate placing groove. And the two grabbing mechanisms are oppositely arranged on the portions, on the two sides of the flange plate containing groove, of the hoisting main plate body, and the positioning assemblies are slidably installed on the inner sides of the limiting grooves. The pipe fitting flange clamping device is simple in structure and convenient to operate, the structural characteristics of a pipe fitting flange are fully utilized, the pipe fitting flange can be rapidly fixed, the stability of the pipe fitting flange after being fixed is reliable, the loosening problem does not need to be worried about, and by combining the adjustable design of the grabbing mechanism and the positioning assembly, the clamping effect is good. The device can adapt to the lifting and fixing work of pipe fitting flanges of different sizes and models.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipe flange transportation and lifting, and particularly relates to a pipe flange lifting and fixing device. Background Art

[0002] As we all know, pipe flanges are mostly I-shaped structures. Traditionally, when lifting and transporting pipe flanges, it is necessary to use a lifting device and use the disc at the end of the pipe flange to bind and fix the pipe flange. The whole process is time-consuming and labor-intensive. Moreover, industrial pipe flanges are all made of metal and are heavy. If the binding is not firm during the lifting process, the pipe flange is very likely to fall off, which will not only damage the flange itself, but also pose an extremely dangerous safety hazard to the workers or equipment below.

[0003] Therefore, we design a pipe flange lifting and fixing device with simple structure and practicality. Utility Model Content

[0004] The purpose of the utility model is to provide a pipe flange lifting and fixing device to solve the above-mentioned problems existing in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A pipe flange lifting and fixing device includes a lifting main body, a gripping mechanism and a positioning assembly. A flange mounting groove is provided in the middle of the bottom of the lifting main body. A limiting groove is provided on the lifting main body in the middle of the flange mounting groove. A positioning frame is horizontally welded on the lifting main body at the junction of the bottom of the limiting groove and the flange mounting groove.

[0007] Furthermore, there are two groups of grabbing mechanisms, which are relatively arranged on the lifting main board body on both sides of the flange plate mounting groove. The positioning component is slidably installed on the inner side of the limiting groove, and the positioning frame is sleeved on the outer side of the positioning component.

[0008] Furthermore, the grabbing mechanism includes a sleeve, a flange hanging pin and an adjusting screw; the sleeve is welded to the end of the lifting main board body on the side of the flange plate mounting groove, the flange hanging pin is slidably inserted into the sleeve, the adjusting screw is threaded on the tail end of the sleeve, and the front end of the adjusting bolt is rotatably assembled with the tail end of the flange hanging pin, and a fastening nut is also threadedly assembled on the adjusting screw.

[0009] Furthermore, the sleeve includes a square tube; a nut head is welded to the tail end of the square tube and is threadedly assembled with the adjusting screw. The side of the square tube is also provided with a long positioning slot along the length of the square tube for guiding and positioning the flange hanging pin.

[0010] Furthermore, the flange hanging pin includes a pin that is slidably inserted into the inside of the square tube, and the tail end of the pin is provided with a slot for rotationally assembling with the front end of the adjusting screw. Strip-shaped guide pins are fixed on both sides of the pin corresponding to the positions of the positioning slots on both sides of the square tube.

[0011] Furthermore, the positioning assembly includes a positioning guide mechanism, a flange positioning mechanism and a cover plate; the positioning guide mechanism slides with the limit groove, the flange positioning mechanism is installed on the positioning guide mechanism, and the cover plate is installed on the lower end side of the positioning guide mechanism to position the flange positioning mechanism.

[0012] Furthermore, the positioning guide mechanism includes a positioning plate, both sides of which are provided with guide grooves that slide with the groove edges of the limiting grooves, and anti-slip pins are fixed on both sides of the top of the positioning plate, and a threaded hole is designed to penetrate the middle of the positioning plate.

[0013] Furthermore, the positioning and guiding mechanism also includes a guide plate integrally formed at the bottom end of the positioning plate, a avoidance groove A is provided in the middle of the guide plate along the extension direction of the threaded hole, a vertical slide groove is provided in the middle of the guide plate along the extension direction of the avoidance groove A, two horizontal slide grooves are provided on both sides of the vertical slide groove, and slots are provided on both sides of the bottom end of the guide plate.

[0014] Furthermore, the flange positioning mechanism includes an adjusting bolt, a push slider, an expansion slider and a pipe wall support rod.

[0015] Furthermore, the push slider is slidably assembled in the vertical slide groove, an anti-slip ring is provided on the top of the push slider, the adjusting bolt is threadedly assembled in the threaded hole in the middle of the guide plate, and the front end of the adjusting bolt is rotatably clamped in the anti-slip ring.

[0016] Furthermore, there are four expansion sliders, which are slidably installed in four horizontal sliding grooves respectively, and the tail end of each expansion slider is rotationally connected to the push slider through a connecting rod and a pin pile.

[0017] Furthermore, there are two tube wall support rods, which are vertically arranged on both sides of the guide plate, and the side surfaces of each tube wall support rod are fixed to the ends of the two expansion sliders on the corresponding side.

[0018] Furthermore, the angle between the connecting rod and the expansion slider is 20-40 degrees.

[0019] Furthermore, the cover plate includes a buckle cover installed together with the guide plate, and an avoidance groove B is integrally formed at a position in the middle of the buckle cover corresponding to the avoidance groove A.

[0020] Furthermore, a lifting hole is provided at the middle position of the top of the lifting main board body for connecting a lifting rope; and a receiving hole is provided in the middle of the limiting groove.

[0021] Beneficial effects:

[0022] The utility model has a simple structure and is easy to operate. It fully utilizes the structural characteristics of the pipe flange and can quickly fix the pipe flange. The stability of the pipe flange after fixation is reliable and there is no need to worry about loosening. Combined with the adjustable design of the grabbing mechanism and the positioning component, the device can adapt to the lifting and fixing work of pipe flanges of different sizes and models. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural diagram of a pipe flange lifting and fixing device of the utility model;

[0024] Figure 2 This is a schematic diagram of the disassembled structure of a pipe flange lifting and fixing device of the utility model Figure 1 ;

[0025] Figure 3 This is a schematic diagram of the positioning and guiding mechanism structure of the utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the flange positioning mechanism of the utility model;

[0027] Figure 5 This is a schematic diagram of the cover structure of the utility model;

[0028] Figure 6 This is a schematic diagram of the disassembled structure of a pipe flange lifting and fixing device of the utility model Figure 2 .

[0029] In the figure: 1. Hoisting main body; 2. Flange mounting groove; 3. Limiting groove; 4. Positioning frame; 5. Receiving hole; 6. Lifting hole; 7. Positioning assembly; 701. Positioning guide mechanism; 711. Positioning plate; 712. Threaded hole; 713. Anti-slip pin; 714. Guide groove; 715. Guide plate; 716. Avoidance groove A; 717. Vertical slide groove; 718. Horizontal slide groove; 719. Slot; 702. Flange positioning mechanism; 721. Sliding slider; 722, anti-slip ring; 723, connecting rod; 724, expansion slider; 725, pipe wall support rod; 726, pin pile; 727, adjusting bolt; 703, cover plate; 731, buckle cover; 732, avoidance groove B; 8, sleeve; 801, square tube; 802, nut head; 803, positioning slot; 9, flange hanging pin; 901, latch pin; 902, slot; 903, guide pin; 10, adjusting screw; 101, fastening nut. DETAILED DESCRIPTION

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be briefly introduced below in conjunction with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structures of the drawings is only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0031] Example:

[0032] At present, for the lifting and fixing operation of pipe flanges, the traditional bundling and fixing method is time-consuming and labor-intensive, and its stability depends entirely on the operator's bundling firmness and the condition of the binding itself. The lifting and transfer process is time-consuming and labor-intensive, and its safety is also subject to great uncertainty. To address the problems existing in the current lifting and fixing operation of pipe flanges, we propose a pipe flange lifting and fixing device with simple structure, easy operation and good stability. The specific solution is as follows:

[0033] like Figure 1 As shown, the present embodiment provides a pipe flange lifting and fixing device, which specifically includes a lifting main body 1, a grabbing mechanism and a positioning assembly 7, wherein a flange placement groove 2 is provided in the middle position of the bottom of the lifting main body 1. When the device fixes the pipeline flange, the flange placement groove 2 facilitates the device to be clamped on the outside of the flange at the end of the flange, so that the grabbing mechanism can support the flange from the bottom. A lifting hole 6 is provided in the middle position of the top of the lifting main body 1 for connecting a lifting rope; a receiving hole 5 is provided in the middle of the limiting groove 3.

[0034] In order to prevent the fixing device from being displaced and shaking after grabbing the flange, a limiting groove 3 is opened on the lifting main body 1 in the middle of the flange placement groove 2. At the same time, a positioning frame 4 is horizontally welded on the lifting main body 1 at the junction of the bottom of the limiting groove 3 and the flange placement groove 2. The positioning component 7 is slidably installed on the inner side of the limiting groove 3, and the positioning frame 4 is sleeved on the outer side of the positioning component 7 and uses the limiting groove 3 to limit the positioning component 7, so that the positioning component 7 can only move up and down while preventing the positioning component 7 from leaving the limiting groove 3.

[0035] When using the fixing device to fix the pipe flange, the entire device is first clamped on the outside of the flange at the end of the flange through the flange mounting groove 2 (note: it needs to be clamped in the middle position of the flange), so that the grasping mechanism can support both sides of the flange from the bottom, and then lower the positioning component 7 to make it fall into the inside of the pipe flange (the positioning component 7 needs to be adjusted to the corresponding expansion width according to the inner diameter of the flange). The positioning component 7 is used to position the position of the fixing device on the flange so that it cannot deviate from the center position, thereby achieving an effective centering and anti-slip effect.

[0036] In order to realize the grabbing of the flange at the end of the pipe flange, Figure 1 、 Figure 2 、 Figure 6 As shown, there are two groups of grabbing mechanisms, and the two groups of grabbing mechanisms are arranged at opposite angles on the lifting main body 1 on both sides of the flange placement groove 2, so as to facilitate grabbing the flange from both sides of the flange end.

[0037] Moreover, since the size of the pipe flange varies according to different application scenarios, in order to adapt to flange fixation of different sizes, its grabbing mechanism adopts an adjustable design. Specifically, the grabbing mechanism includes a sleeve 8, a flange hanging pin 9 and an adjusting screw 10; the sleeve 8 is welded to the end of the lifting main body 1 on the side of the flange plate mounting groove 2, and the flange hanging pin 9 is slidably inserted into the interior of the sleeve 8. In order to make the length of the flange hanging pin 9 extending from the sleeve 8 adjustable, the adjusting screw 10 is threadedly screwed on the tail end of the sleeve 8, and the front end of the adjusting bolt 727 is rotated and assembled together with the tail end of the flange hanging pin 9. A fastening nut 101 is also threadedly assembled on the adjusting screw 10. The operator adjusts the extension length of the flange hanging pin 9 from the sleeve 8 by screwing the adjusting screw 10 according to the outer diameter size of the flange plate at the flange end. When it is adjusted to the appropriate level, the adjusting screw 10 is locked by screwing the fastening nut 101 with the help of the threaded assembly relationship between the sleeve 8 and the adjusting screw 10.

[0038] In order to realize the adjustment action of the grabbing mechanism, its sleeve 8 includes a square tube 801; a nut head 802 is welded at the tail end of the square tube 801 and is threadedly assembled with the adjusting screw 10, and the side of the square tube 801 is also provided with a long strip of positioning slots 803 along the length direction of the square tube 801, which is used to guide and position the flange hanging pin 9, and the flange hanging pin 9 includes a pin 901 that is slidably inserted into the inside of the square tube 801, and the tail end of the pin 901 is provided with a card slot 902 for rotationally assembled with the front end of the adjusting screw 10, and strip-shaped guide pins 903 are fixed on both sides of the pin 901 corresponding to the positions of the positioning slots 803 on both sides of the square tube 801. When the pin 901 is inserted into the inside of the square tube 801, the guide pins 903 slide and fit with the positioning slots 803.

[0039] Since the entire fixture is designed in a flat structure, and the pipe flange is a cylindrical structure, in order to prevent the grabbing mechanism from shifting during the process of fixing the pipe flange, we combine the structural design characteristics of the pipe flange and set a positioning component 7 on the fixture to position the fixture, wherein, Figure 2 As shown, the positioning assembly 7 specifically includes a positioning guide mechanism 701, a flange positioning mechanism 702 and a cover plate 703; the positioning guide mechanism 701 slides with the limiting groove 3 to implement positioning and guidance of the movement direction of the entire positioning assembly 7, while the flange positioning mechanism 702 is installed on the positioning guide mechanism 701, and the cover plate 703 is installed on one side of the lower end of the positioning guide mechanism 701 to implement positioning of the flange positioning mechanism 702;

[0040] Specifically, such as Figure 3 As shown, the positioning guide mechanism 701 includes a positioning plate 711, and guide grooves 714 are provided on both sides of the positioning plate 711 for sliding cooperation with the groove edge of the limiting groove 3, and anti-slip pins 713 are fixed on both sides of the top of the positioning plate 711, and a threaded hole 712 is designed to pass through the middle of the positioning plate 711. The positioning guide mechanism 701 also includes a guide plate 715 integrally formed at the bottom end of the positioning plate 711, and an avoidance groove A716 is provided in the middle of the guide plate 715 along the extension direction of the threaded hole 712. A vertical slide groove 717 is provided in the middle of the guide plate 715 along the extension direction of the avoidance groove A716, and two horizontal slide grooves 718 are provided on both sides of the vertical slide groove 717, and slots 719 are provided on both sides of the bottom end of the guide plate 715. Figure 4As shown, the flange positioning mechanism 702 includes an adjusting bolt 727, a push slider 721, an expansion slider 724 and a pipe wall support rod 725. The push slider 721 is slidably assembled in the vertical slide groove 717. The top of the push slider 721 is provided with an anti-slip ring 722. The adjusting bolt 727 is threadedly assembled in the threaded hole 712 in the middle of the guide plate 715, and the front end of the adjusting bolt 727 is rotated and clamped in the anti-slip ring 722; there are four expansion sliders 724, which are slidably mounted in four horizontal slide grooves 718 respectively, and the tail end of each expansion slider 724 is connected to the push slider The sliders 721 are rotatably connected by connecting rods 723 and pin piles 726. There are two pipe wall support rods 725, which are vertically arranged on both sides of the guide plate 715. The side of each pipe wall support rod 725 is fixed to the ends of the two expansion sliders 724 on the corresponding side; in the structural design of the entire positioning assembly 7, the positioning guide mechanism 701 and the flange positioning mechanism 702 cooperate to achieve adjustment of different width sizes; when the staff clamps the fixing device in the middle position on both sides of the pipe flange end (before this, the staff needs to adjust it according to the The size of the flange end flange, first adjust the state of the flange hanging pin 9), lower the positioning assembly 7 from the limiting groove 3, so that the bottom end of the positioning assembly 7 falls into the inner side of the pipe flange (because the contact position between the fixing device and the flange end flange is in the middle position, the positioning assembly 7 is also in the middle position inside the flange after it falls into the inner side of the flange). According to the size of the flange, the staff screws the adjusting screw 10 to make the push slider 721 slide upward along the vertical slide groove 717, forcing the connecting rod 723 to push the expansion slider 724 along the horizontal slide groove 718 toward The guide plate 715 moves in the outward direction, so that the tube wall support rod 725 vertically installed at the end of the expansion slider 724 expands outward. When the outer sides of the tube wall support rods 725 on both sides contact the inner wall of the flange, the mutual positioning between the fixing device and the flange is completed, so that the grasping mechanism can always maintain a stable grasping effect between the flange plate at the end of the flange. When the fixing device needs to be removed, it is only necessary to reversely rotate the adjusting screw 10 to make the tube wall support rod 725 shrink and reset, and move the positioning component 7 upward to separate it from the flange, and then the entire fixing device can be smoothly removed.

[0041] In order to enable the push slider 721 to more easily push the expansion slider 724 to move in the horizontal sliding groove 718 through the connecting rod 723 during the upward movement, the angle between the connecting rod 723 and the expansion slider 724 is 20-40 degrees.

[0042] like Figure 5 As shown, the cover plate 703 includes a buckle cover 731 installed together with the guide plate 715, and a avoidance groove B732 is integrally formed at the position of the middle part of the buckle cover 731 corresponding to the avoidance groove A716, wherein the avoidance groove A716 and the avoidance groove B732 are buckled together to form a columnar space for facilitating the movement of the anti-slip ring 722.

[0043] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A pipe flange lifting and fixing device, characterized in that: It comprises a hoisting mainboard (1), a gripping mechanism and a positioning assembly (7), wherein a flange mounting groove (2) is provided at the middle position of the bottom of the hoisting mainboard (1), a limiting groove (3) is provided on the hoisting mainboard (1) in the middle of the flange mounting groove (2), and a positioning frame (4) is horizontally welded on the hoisting mainboard (1) at the junction of the bottom of the limiting groove (3) and the flange mounting groove (2); There are two groups of grabbing mechanisms, which are relatively arranged on the hoisting main body (1) on both sides of the flange placement groove (2). The positioning component (7) is slidably installed on the inner side of the limit groove (3), and the positioning frame (4) is sleeved on the outer side of the positioning component (7).

2. A pipe flange lifting and fixing device according to claim 1, characterized in that: The grabbing mechanism comprises a sleeve (8), a flange hanging pin (9) and an adjusting screw (10); The sleeve (8) is welded to the end of the hoisting main body (1) on the side of the flange mounting groove (2), the flange hanging pin (9) is slidably inserted into the sleeve (8), the adjusting screw (10) is screwed on the rear end of the sleeve (8), and the front end of the adjusting bolt (727) is rotatably assembled with the rear end of the flange hanging pin (9), and a fastening nut (101) is also threadedly assembled on the adjusting screw (10).

3. A pipe flange lifting and fixing device according to claim 2, characterized in that: The sleeve (8) comprises a square tube (801); a nut head (802) is welded to the rear end of the square tube (801) and is threadedly connected to the adjusting screw (10); and a long strip-shaped positioning slot (803) is provided on the side of the square tube (801) along the length direction of the square tube (801) for guiding and positioning the flange hanging pin (9).

4. A pipe flange lifting and fixing device according to claim 2, characterized in that: The flange hanging pin (9) includes a latch pin (901) that is slidably inserted into the interior of the square tube (801), and a slot (902) is provided at the tail end of the latch pin (901) for rotationally assembling with the front end of the adjusting screw (10). Strip-shaped guide pins (903) are fixed on both sides of the latch pin (901) at positions corresponding to the positioning slots (803) on both sides of the square tube (801).

5. The pipe flange lifting and fixing device according to claim 1, characterized in that: The positioning assembly (7) comprises a positioning guide mechanism (701), a flange positioning mechanism (702) and a cover plate (703); the positioning guide mechanism (701) is slidably matched with the limiting groove (3), the flange positioning mechanism (702) is mounted on the positioning guide mechanism (701), and the cover plate (703) is mounted on one side of the lower end of the positioning guide mechanism (701) to position the flange positioning mechanism (702).

6. A pipe flange lifting and fixing device according to claim 5, characterized in that: The positioning guide mechanism (701) comprises a positioning plate (711), wherein both sides of the positioning plate (711) are provided with guide grooves (714) that are slidably matched with the groove edges of the limiting groove (3), and anti-slip pins (713) are fixed on both sides of the top of the positioning plate (711), and a threaded hole (712) is designed to penetrate the middle of the positioning plate (711).

7. A pipe flange lifting and fixing device according to claim 6, characterized in that: The positioning guide mechanism (701) further includes a guide plate (715) integrally formed at the bottom end of the positioning plate (711), a avoidance groove A (716) is provided in the middle of the guide plate (715) along the extension direction of the threaded hole (712), a vertical slide groove (717) is provided in the middle of the guide plate (715) along the extension direction of the avoidance groove A (716), two horizontal slide grooves (718) are provided on both sides of the vertical slide groove (717), and a slot (719) is provided on both sides of the bottom end of the guide plate (715).

8. The pipe flange lifting and fixing device according to claim 5, characterized in that: The flange positioning mechanism (702) includes an adjusting bolt (727), a push slider (721), an expansion slider (724), and a pipe wall support rod (725); The push slider (721) is slidably assembled in the vertical slide groove (717), and an anti-slip ring (722) is provided at the top of the push slider (721). The adjusting bolt (727) is threadedly assembled in the threaded hole (712) in the middle of the guide plate (715), and the front end of the adjusting bolt (727) is rotatably engaged in the anti-slip ring (722); There are four expansion sliders (724), which are slidably mounted in four transverse slide grooves (718), and the tail end of each expansion slider (724) is rotatably connected to the push slider (721) through a connecting rod (723) and a pin (726); There are two tube wall support rods (725), which are vertically arranged on both sides of the guide plate (715). The side surface of each tube wall support rod (725) is fixed to the end of the two expansion sliders (724) on the corresponding side. The angle between the connecting rod (723) and the expansion slider (724) is 20-40 degrees.

9. The pipe flange lifting and fixing device according to claim 5, characterized in that: The cover plate (703) includes a buckle cover (731) installed together with the guide plate (715), and a avoidance groove B (732) is integrally formed at a position in the middle of the buckle cover (731) corresponding to the avoidance groove A (716).

10. The pipe flange lifting and fixing device according to claim 1, characterized in that: A lifting hole (6) is provided at the middle position of the top of the lifting mainboard (1) for connecting a lifting rope; and a receiving hole (5) is provided at the middle of the limiting groove (3).

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