Bare pipe clamping device

Abstract

The present invention belongs to the technical field of bare pipe clamps, and discloses a bare pipe clamping device, including a clamping frame and a clamp. The clamping frame includes a cylinder cover, a cylinder body, a right column, a lower base plate and a left column. The two ends of the lower base plate are fixedly connected to the left column and the right column respectively. The end of the left column away from the lower base plate and the end of the right column away from the lower base plate are both fixedly connected to the cylinder body. The cylinder cover is fixedly connected between the cylinder bodies to form a closed clamping frame; the clamp includes an upper moving block, an upper sliding block, an intermediate sliding block, a lower sliding block and a lower fixed block that are slidably connected to each other; the clamp is fixedly connected inside the support frame. The present invention adopts a hydraulic clamping method. Under the drive of hydraulic pressure, it can smoothly complete the opening and clamping actions, which greatly reduces the labor intensity of workers. The clamping force can be automatically and steplessly adjusted by controlling the hydraulic oil pressure, which can not only reliably clamp the bare pipe, but also prevent the bare pipe from being clamped.

Description

Technical Field

[0001] The invention belongs to the technical field of bare pipe clamps, and in particular relates to a bare pipe clamping device. Background Art

[0002] During the pressure and burst test of hydraulic bare pipes, the bare pipes need to be fastened and sealed with adapters and connected to an external pressure source before the test can be carried out. The most common solution for fastening and sealing is to crimp matching adapters on both ends of the bare pipes. This solution requires two sets of adapters for each test, and a crimping machine needs to be purchased to cooperate with it to complete the test. However, the crimping range of conventional crimping machines can only cover Ф3mm~Ф50mm. Bare pipes beyond this range require customized crimping machines to crimp joints or customized non-standard fixtures, which can only be tested after manual assembly. This crimping equipment is not only expensive, but also complicated to operate. It is easy to clamp the bare pipe during the crimping process and has poor reliability. Summary of the invention

[0003] Based on the above background, the present invention develops a bare pipe clamping device to solve the problems of waste of resources, expensive crimping equipment and complicated operation in the process of crimping adapters and bare pipes in the above background technology.

[0004] In order to achieve the above invention purpose, the technical solution adopted is:

[0005] A bare pipe clamping device comprises a clamping frame and a clamp, wherein the clamping frame comprises a cylinder cover, a cylinder body, a right column, a lower base plate and a left column, wherein the two ends of the lower base plate are respectively fixedly connected to the left column and the right column, and the end of the left column away from the lower base plate and the end of the right column away from the lower base plate are both fixedly connected to the cylinder body, and the cylinder cover is fixedly connected between the cylinder bodies to form a closed clamping frame; the clamp comprises an upper moving block, an upper sliding block, an intermediate sliding block, a lower sliding block and a lower fixed block which are interactively connected to each other, and the clamp is fixedly connected to the inside of the support frame.

[0006] The present invention is further configured as follows: a piston rod is fixedly connected in the clamping frame, the piston rod is in contact with the cylinder body and the cylinder cover, the upper moving block and the upper moving beam are both fixedly connected to the end of the piston rod away from the cylinder cover; the clamp includes an upper moving beam and a lower fixed beam, the lower fixed block and the lower fixed beam are both fixedly connected to the lower base plate.

[0007] The present invention is further configured as follows: a bearing seat hole with an embedded bearing is provided on the intermediate sliding block, and a rolling shaft is installed inside the bearing.

[0008] The present invention is further configured as follows: slideways are provided on the upper movable beam and the lower fixed beam, one end of the rolling shaft is located in the slideway, the slideway matches the rolling shaft, and the slideway forms an angle of 45° with the X-axis.

[0009] The present invention is further configured such that: the middle sliding block is slidably connected to both the upper sliding block and the lower sliding block.

[0010] The present invention is further configured as follows: the clamp includes a transition clamp block and a center clamp block, the transition clamp block is detachably connected to the upper movable block, the lower fixed block, the upper sliding block, the middle sliding block and the lower sliding block, and the center clamp block is detachably connected to the transition clamp block.

[0011] The present invention is further configured as follows: a guide rod fixedly connected to the upper moving beam is provided on one side of the oil cylinder body parallel to the upper moving beam.

[0012] The present invention is further configured as follows: a support beam fixedly connected to one side of the clamping frame is provided, one end of the support beam is fixedly connected to the lower base plate, and the other end of the support beam is fixedly connected to the cylinder body.

[0013] The present invention is further configured as follows: a core detachably connected to the support beam is provided at the center of the clamp.

[0014] The present invention is further configured as follows: a sample groove for placing a sample is provided around the core and is cocentric with the core; the sample is sheathed on the core and is located in the sample groove.

[0015] Compared with the prior art, the present invention has the following beneficial effects: the bare pipe clamping device adopts a hydraulic clamping method, and the various parts of the clamp are slidably connected to form a whole. Under the drive of hydraulic pressure, the opening and clamping actions can be smoothly completed. The clamping action of this invention is automatically completed by hydraulic drive, which greatly reduces the labor intensity of workers. The clamping force of this invention can be automatically and steplessly adjusted by controlling the hydraulic oil pressure, which can not only reliably clamp the bare pipe, but also prevent the bare pipe from being clamped. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of a bare pipe clamping device provided by one embodiment of the present invention;

[0018] Figure 2 A bare pipe clamping device is provided by an embodiment of the present invention. Figure 1 Sectional view of AA in the middle;

[0019] Figure 3 is an internal cross-sectional view of a bare pipe clamping device provided by one embodiment of the present invention;

[0020] Figure 4 is another internal cross-sectional view of a bare pipe clamping device provided by one embodiment of the present invention;

[0021] Figure 5 A bare pipe clamping device provided by an embodiment of the present invention Figure 4 Enlarged view of G in the middle;

[0022] Figure numerals: 1. Cylinder cover; 2. Cylinder body; 3. Piston rod; 4. Guide rod; 5. Upper moving beam; 6. Right column; 7. Upper moving block; 8. Upper sliding block; 9. Middle sliding block; 10. Lower sliding block; 11. Lower fixed block; 12. Lower fixed beam; 13. Lower base plate; 14. Transition clamping block; 15. Center clamping block; 16. Sample; 17. Core; 18. Left column; 19. Bearing; 20. Rolling shaft; 21. Slideway; 22. Bearing seat hole; 23. Sample slot; 24. Support beam; 100. Clamping frame; 200. Fixture. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can also be the internal connection of two components, it can be a wireless connection, or it can be a wired connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In addition, the technical features involved in the different embodiments of the present invention described above can be combined with each other as long as they do not conflict with each other.

[0027] A bare pipe clamping device, comprising a clamping frame 100 and a clamp 200, such as Figure 1-5 As shown, the clamping frame 100 includes a cylinder cover 1, a cylinder body 2, a right column 6, a lower base plate 13 and a left column 18, the two ends of the lower base plate 13 are respectively fixedly connected to the left column 18 and the right column 6 by bolts, the end of the left column 18 away from the lower base plate and the end of the right column 6 away from the lower base plate are both fixedly connected to the cylinder body 2 by bolts, the cylinder cover 1 is fixedly connected between the cylinder bodies 2 by bolts to form a closed clamping frame 100; the clamp 200 includes an upper moving block 7, an upper sliding block 8, an intermediate sliding block 9, a lower sliding block 10 and a lower fixed block 11 which are slidably connected to each other by a dovetail groove; the clamp 200 is fixedly connected to the inside of the support frame by bolts.

[0028] The bare pipe clamping device of the present invention adopts a hydraulic clamping method. The various components of the clamping frame 100 are fastened and connected by bolts, and the various components of the clamp 200 are slidably connected into a whole through a dovetail groove. Under the drive of hydraulic pressure, the opening and movement of the clamp 200 can be smoothly completed.

[0029] During the specific implementation process, a piston rod 3 is fixedly connected to the clamping frame 100, and the piston rod 3 is in contact with the cylinder body 2 and the cylinder cover 1. The upper moving block 7 and the upper moving beam 5 are both bolted to the end of the piston rod 3 that is away from the cylinder cover 1. The clamp 200 includes an upper moving beam 5 and a lower fixed beam 12. The lower fixed block 11 and the lower fixed beam 12 are both bolted to the lower base plate 13. During the entire clamping process, the lower fixed block 11 always remains fixed, and the piston rod 3 is driven up and down by hydraulic oil. The upper moving block 7 moves up and down with the piston rod 3, and the clamping force can be adjusted by controlling the hydraulic oil pressure.

[0030] Furthermore, the middle slider 9 is provided with a bearing seat hole 22 in which the bearing 19 is embedded, and a split rolling shaft 20 consisting of two sections is installed inside the bearing 19. A slideway 21 is provided on the upper movable beam 5 and the lower fixed beam 12, and one end of the rolling shaft 20 is located in the slideway 21. The slideway 21 matches the rolling shaft 20, and the slideway 21 is at a 45° angle with the X-axis. During the entire clamping process, the cylinder body 2 moves up and down, the upper movable beam 5 moves up and down with the piston rod 3, and the rolling shaft 20 slides in the slideway 21, so that the middle slider 9 also moves accordingly, and the rolling shaft 20 always slides in the slideway 21.

[0031] During the specific implementation process, the middle slider 9 is slidingly connected to the upper sliding block 8 and the lower sliding block 10 by dovetail grooves. During the entire clamping process, the upper sliding block 8 and the lower sliding block 10 also move with the up and down movement of the piston rod 3 to achieve the opening and closing of the clamp 200.

[0032] Furthermore, the clamp includes a transition clamp block 14 and a center clamp block 15, wherein the transition clamp block 14 is detachably connected to the upper moving block 7, the lower fixed block 11, the upper sliding block 8, the middle sliding block 9 and the lower sliding block 10, respectively, and the center clamp block 15 is detachably connected to the transition clamp block 14. In actual application, the center clamp block 15 matching the bare pipe can be replaced according to the diameter and length of the bare pipe.

[0033] Among them, a guide rod 4 fixedly connected to the upper moving beam 5 is provided on one side of the cylinder body 2 parallel to the upper moving beam 5, and the guide rod 4 can prevent the clamp 200 from rotating or deflecting during the rising and falling process.

[0034] It should be noted that a support beam 24 fixedly connected to the clamping frame 100 is provided on one side thereof, one end of the support beam 24 is fixedly connected to the lower bottom plate 13, and the other end thereof is fixedly connected to the cylinder body 2. A core 17 detachably connected to the support beam 24 is provided at the center of the clamp 200, and a sample groove 23 for placing the sample 16 is provided around the core 17 and is concentric with the core 17. The sample 16 is sheathed on the core 17 and is located in the sample groove 23. In actual application, the core 17 and the center clamp block 15 that match the inner diameter and outer diameter of the bare pipe can be replaced, and the core 17 and the center clamp block 15 are provided with inverted teeth to prevent the bare pipe from slipping during the clamping process.

[0035] In summary, the present invention has the following beneficial effects:

[0036] 1. The core 17 and the center clamp 15 of the detachable connection in the present invention can be reused, thus avoiding the cost of the adapter required for each test in the prior art;

[0037] 2. The present invention can replace the appropriate core 17 and the center clamp 15 according to the inner diameter and outer diameter of the bare pipe, and the clamping range can cover Ф3mm~Ф250mm. Moreover, the clamping frame 100 and the clamp 200 are integrally connected, and there is no need to purchase or customize other equipment again, thereby reducing the test cost.

[0038] 3. The present invention is a hydraulically driven automatic clamping method, which is simple to operate, safe and reliable, reduces the labor intensity of workers and reduces labor costs;

[0039] 4. This invention has a compact structure and occupies little space, thus reducing the space cost.

[0040] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A bare pipe clamping device, characterized in that: include: A clamping frame (100) and a clamp (200); the clamping frame (100) comprises a cylinder cover (1), a cylinder body (2), a right column (6), a lower base plate (13) and a left column (18); the two ends of the lower base plate (13) are fixedly connected to the left column (18) and the right column (6) respectively; the end of the left column (18) away from the lower base plate and the end of the right column (6) away from the lower base plate are both fixedly connected to the cylinder body (2); the cylinder cover (1) is fixedly connected between the cylinder bodies (2) to form a closed clamping frame (100); a piston rod (3) is fixedly connected to the clamping frame; the piston rod (3) is fixedly connected to the cylinder body (2) to form a closed clamping frame (100); a piston rod (3) is fixedly connected to the inside of the clamping frame; the piston rod (3) is fixedly connected to the cylinder body (2) to form a closed clamping frame (100); a piston rod (3) is fixedly connected to the cylinder body (2) to form a closed clamping frame (100); the ... The cylinder body (2) and the cylinder cover (1) are in contact with each other, the clamp (200) comprises an upper movable beam (5) and a lower fixed beam (12), and the clamp (200) comprises an upper movable block (7), an upper sliding block (8), an intermediate sliding block (9), a lower sliding block (10) and a lower fixed block (11) which are slidably connected to each other; the upper movable block (7) and the upper movable beam (5) are both fixedly connected to the end of the piston rod (3) which is away from the cylinder cover (1); a support beam (24) fixedly connected to the clamping frame (100) is provided on one side, one end of the support beam (24) is fixedly connected to the lower base plate (13), and the other end thereof is fixedly connected to the cylinder body (2); The middle slider (9) is provided with a bearing seat hole (22) in which a bearing (19) is embedded, and a rolling shaft (20) is installed inside the bearing (19); the middle slider (9) is slidably connected to both the upper slider (8) and the lower slider (10); The clamp (200) is fixedly connected to the inside of the clamping frame (100); the lower fixed block (11) and the lower fixed beam (12) are both fixedly connected to the lower base plate (13); a slideway (21) is provided on the upper movable beam (5) and the lower fixed beam (12); one end of the rolling shaft (20) is located in the slideway (21); the slideway (21) matches the rolling shaft (20); the slideway (21) and the lower base plate (13) maintain an angle; the clamp (200) comprises a transition clamp (14) and a center clamp (15); the transition clamp (14) is detachably connected to the upper movable block (7), the lower fixed beam (12), and the lower fixed beam (12). The central clamp (15) is detachably connected to the transition clamp (14) on the lower fixed block (11), the upper sliding block (8), the middle sliding block (9) and the lower sliding block (10); a guide rod (4) fixedly connected to the upper moving beam (5) is provided on one side of the cylinder body (2) parallel to the upper moving beam (5); a core (17) detachably connected to the support beam (24) is provided at the center of the clamp (200); a sample groove (23) for placing a sample (16) is provided around the core (17) and is concentric with the core (17); the sample is sheathed on the core (17) and is located in the sample groove (23).

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