Annular steel pipe two-end tensioning adjusting assembly

Abstract

The utility model relates to a round steel pipe two-end tensioning adjusting assembly which comprises a supporting assembly, a first limiting round plate and a second limiting round plate, the supporting assembly comprises a supporting rod, the first limiting round plate is fixed to one end of the supporting rod, and the second limiting round plate is detachably installed at the other end of the supporting rod; a first end adjustment mechanism; and a second end adjusting mechanism. The first end adjusting mechanism and the second end adjusting mechanism can be adjusted so that the first limiting cushion block and the second limiting cushion block can be expanded independently to clamp the round steel pipe arranged outside the limiting cushion block and the second limiting cushion block in a sleeving mode, reliable clamping and fixing of the round steel pipe are achieved, and machining of the outer surface of the round steel pipe is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of machining accessories and relates to a machining fixture, in particular to a tension adjustment component at both ends of a round steel pipe. Background Art

[0002] Round steel pipe is a steel material with open ends and a hollow, concentric cross-section, where the length is relatively large compared to the circumference. Steel pipe specifications are expressed by external dimensions (such as outer diameter or side length), inner diameter, and wall thickness. Sizes range widely, from tiny capillaries to large round pipes with diameters of several meters. Round steel pipe is used in pipelines, thermal equipment, machinery, petroleum drilling, containers, the chemical industry, and for specialized applications.

[0003] According to the purpose of the round steel pipe, the surface of the round steel pipe usually needs to be treated or processed differently, such as cleaning, pickling, passivation, heat treatment, straightening, etc. The Chinese utility model patent with publication number CN221911160U discloses a surface grinding device for stainless steel pipes, which relates to the field of stainless steel pipe processing technology, including a main workbench, a driving motor box is fixedly installed at the bottom of the main workbench, and a grinding body is movably installed on the top of the main workbench, a limiting body is fixedly installed on the top of the main workbench, and a dust removal body is fixedly installed on the top of the main workbench, the grinding body includes a grinding unit, the limiting body includes an adjustment unit, and the dust removal body includes a dust removal unit. The utility model solves the problem that the existing grinding device cannot fix the steel pipe during use when grinding the steel pipe, resulting in the steel pipe being unstable during grinding and easily causing grinding deviation by having a lifting cylinder and a limiting top platform. The above structures are combined to achieve the purpose of limiting the steel pipe during the grinding process by utilizing the limiting mechanism during the use of the grinding device. The surface grinding device of such a structure does not clamp the stainless steel pipe from two end surfaces, which causes it to easily jump during the processing, affecting the processing accuracy. Summary of the Invention

[0004] The utility model aims to overcome the deficiencies of the prior art and provide a tension adjustment component for both ends of a round steel pipe.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a tension adjustment assembly for both ends of a round steel pipe, which comprises:

[0006] A support assembly, the support assembly comprising a support rod, a first limiting circular plate fixed to one end of the support rod, and a second limiting circular plate detachably mounted on the other end of the support rod;

[0007] A first end adjustment mechanism, the first end adjustment mechanism comprising a plurality of first limiting pads arranged outside the first limiting circular plate and surrounding the support rod, a first elastic hoop, and a first adjustment rotating head adjustably mounted at the end of the support rod and cooperating with the plurality of first limiting pads, the outer surface of each first limiting pad being provided with a first clamping groove, and the first elastic hoop being clamped in the first clamping grooves of the plurality of first limiting pads;

[0008] A second end adjustment mechanism, the second end adjustment mechanism comprising a plurality of second limiting pads arranged outside the second limiting circular plate and surrounding the support rod, a second elastic hoop, and a second adjustment rotary head adjustably mounted at the end of the support rod and cooperating with the plurality of second limiting pads, the outer surface of each second limiting pad being provided with a second clamping groove, and the second elastic hoop being clamped in the second clamping grooves of the plurality of second limiting pads;

[0009] When the first adjusting rotary head and the second adjusting rotary head are adjusted to move toward each other, the plurality of first limiting pads and the plurality of second limiting pads expand independently of each other to clamp the round steel pipe sleeved thereon.

[0010] Optimally, the axis center line of the first limiting circular plate and the axis center line of the second limiting circular plate both coincide with the axis center line of the support rod.

[0011] Furthermore, the second limiting circular plate is detachably mounted on the other end of the support rod by means of threads or screws.

[0012] Furthermore, when an internal thread is provided at the center of the second limiting circular plate, an external thread matching the internal thread is provided at the other end of the support rod.

[0013] Furthermore, a screw hole extending toward the axis of the second limiting circular plate is provided on the circumferential surface thereof, and a plurality of mounting holes spaced apart in the axis direction of the support rod are provided.

[0014] Optimally, the first adjusting rotary head includes a first cylindrical body, a first frustum formed integrally on one end face of the first cylindrical body, a first operating handle block integrally formed on the other end face of the first cylindrical body, and a first support rod sleeve hole opened in the first frustum and the first cylindrical body and extending into the first operating handle block. The diameter of the first cylindrical body is larger than the inner diameter of the structure enclosed by multiple first limiting pads.

[0015] Furthermore, a plurality of first anti-slip grooves extending along the axis direction of the first operating handle block are formed on the outer peripheral surface of the first operating handle block.

[0016] Optimally, the second adjustment rotary head includes a second cylindrical body, a second frustum formed integrally on one end face of the second cylindrical body, a second operating handle block integrally formed on the other end face of the second cylindrical body, and a second support rod sleeve hole opened in the second frustum and the second cylindrical body and extending through the second operating handle block, and the diameter of the second support rod sleeve hole is larger than the inner diameter of the structure enclosed by multiple second limiting pads.

[0017] Furthermore, a plurality of second anti-slip grooves extending along the axis direction of the second operating handle block are formed on the outer peripheral surface of the second operating handle block.

[0018] Due to the application of the above-mentioned technical scheme, the present invention has the following advantages compared with the prior art: the tightening and adjusting components at both ends of the round steel pipe of the present invention cooperate through a support component, a first end adjustment mechanism and a second end adjustment mechanism with a specific structure. In this way, when a steel pipe with a diameter slightly larger than that of the limiting circular plate is sleeved thereon, the first end adjustment mechanism and the second end adjustment mechanism can be adjusted to make the first limiting pad and the second limiting pad expand independently of each other to clamp the round steel pipe sleeved thereon, thereby realizing reliable clamping and fixation of the round steel pipe and facilitating processing of the outer surface of the round steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of the tension adjustment assembly at both ends of a round steel pipe of the utility model;

[0020] Figure 2 This is a structural diagram of the first adjusting rotary head in the tensioning and adjusting assembly at both ends of a round steel pipe of the present invention;

[0021] Figure 3 This is a structural diagram of the second adjusting rotary head in the tensioning and adjusting assembly at both ends of a round steel pipe of the present invention;

[0022] Figure 4 It is a cross-sectional schematic diagram of the first limiting pad in the tension adjustment assembly at both ends of a round steel pipe of the present invention. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0024] like Figure 1 The tension adjustment assembly at both ends of the round steel pipe shown mainly includes a support assembly 1, a first end adjustment mechanism 2, a second end adjustment mechanism 3 and other structures.

[0025] The support assembly 1 includes a support rod 11, a first limiting circular plate 12 fixed to one end of the support rod 11, and a second limiting circular plate 13 detachably mounted on the other end of the support rod 11, such that the axis of the first limiting circular plate 12 and the axis of the second limiting circular plate 13 both coincide with the axis of the support rod 11. In this embodiment, the first limiting circular plate 12 can be fixed to the support rod 11 using conventional methods, such as welding, fastener connection, etc.; it should be noted that a certain distance (defined as D1) is maintained between the first limiting circular plate 12 and the corresponding end face of the support rod 11 to ensure normal installation and use of the first end adjustment mechanism 2. The difference is that the second limiting circular plate 13 is detachably and adjustably mounted on the other end of the support rod 11 (the distance (defined as D2) between the second limiting circular plate 13 and the other end surface corresponding to the support rod 11 is adjustable, but D2 is usually greater than or equal to D1). Its installation method can adopt the existing conventional method, such as being detachably mounted on the other end of the support rod 11 by means of threads or screws (the first limiting circular plate 12 and the second limiting circular plate 13 are parallel to each other). At this time, the support rod 11 passes through the second end adjustment mechanism 3 but not the first end adjustment mechanism 2. Therefore, the spacing between the first end adjustment mechanism 2 and the second end adjustment mechanism 3 can be adjusted by adjusting the second end adjustment mechanism 3, so as to clamp round steel pipes of different lengths and improve the use range of the tension adjustment assembly at both ends of the round steel pipe. For example, when an internal thread is provided at the center of the second limiting circular plate 13, an external thread matching the internal thread is provided at the other end of the support rod 11, thereby realizing a threaded connection; a screw hole extending toward its axis can also be provided on the circumferential surface of the second limiting circular plate 13, and the support rod 11 can be provided with a plurality of mounting holes spaced apart in the direction of its axis, thereby realizing connection by means of screws.

[0026] The first end adjustment mechanism 2 includes a first limit pad 21, a first elastic hoop 22 and a first adjustment rotary head 23. There are multiple first limit pads 21 (usually 4 to 6), which are arranged on the outside of the first limit circular plate 12 (each first limit pad 21 is against the outer surface of the first limit circular plate 12) and are arranged around the support rod 11, and the whole is roughly formed into a circular ring structure; in this embodiment, the first limit pad 21 can be a standard arc-shaped sheet, but it is preferred to set its outer surface to a plane and design its inner surface to a corresponding inclined surface (that is, the thickness of the first limit pad 21 gradually decreases from the inside to the outside, such as Figure 4As shown), to improve the adjustment effect of the first adjusting rotary head 23 on the first limiting pad 21. In addition, a first slot 211 is provided on the outer surface of each first limiting pad 21 (near the end of the first limiting circular plate 12). The first elastic hoop 22 is clamped in the first slot 211 of these first limiting pads 21, which can ensure that these first limiting pads 21 are regularly arranged around the support rod 11 without falling, thereby improving the reliability of this component. The first adjusting rotary head 23 is adjustably installed at the end of the support rod 11 and cooperates with multiple first limiting pads 21. The adjustable method is usually: the end of the support rod 11 is provided with an external thread, and the first adjusting rotary head 23 is provided with an internal thread that cooperates with the aforementioned external thread. In this embodiment, the first adjustment rotary head 23 includes a first cylindrical body 231, a first frustum 232 (the first frustum 232 has a thin end and a thick end) formed integrally on one end surface of the first cylindrical body 231 (the end surface facing the first limiting circular plate 12), a first operating handle block 233 (a plurality of first anti-slip grooves 235 extending along the axial direction of the first operating handle block 233 are provided on the outer peripheral surface of the first operating handle block 233 to prevent manual or auxiliary tools from slipping during operation) and a first support rod sleeve hole 234 (such as a first support rod sleeve hole 234) provided in the first frustum 232 and the first cylindrical body 231 and extending into the first operating handle block 233. Figure 2 As shown, the first support rod sleeve hole 234 does not penetrate the entire first adjustment rotary head 23, but is an internally threaded hole that matches the aforementioned external thread. The diameter of the first cylindrical body 231 is larger than the inner diameter of the structure formed by the multiple first position-limiting pads 21, while the diameter of the thin end of the first frustum 232 is smaller than the inner diameter of the structure formed by the multiple first position-limiting pads 21. In this way, when in use, the user holds the first operating handle block 233 and rotates the entire first adjustment rotary head 23 so that the first frustum 232 is inserted into the structure formed by the multiple first position-limiting pads 21, and squeezes the multiple first position-limiting pads 21 to cause them to expand outward; in this way, when the round steel pipe is sleeved on the tension adjustment assembly at both ends of the entire round steel pipe, the expanded multiple first position-limiting pads 21 can clamp the round steel pipe.

[0027] like Figure 3As shown, the structure of the second end adjustment mechanism 3 is basically the same as that of the first end adjustment mechanism 2. The second end adjustment mechanism 3 includes a plurality of second limiting pads 31 arranged outside the second limiting circular plate 13 and surrounding the support rod 11, a second elastic hoop 32, and a second adjustment rotary head 33 adjustably mounted at the end of the support rod 11 and cooperating with the plurality of second limiting pads 31. The outer surface of each second limiting pad 31 is formed with a second retaining groove 311, and the second elastic hoop 32 is retained in the second retaining grooves 311 of the plurality of second limiting pads 31. The second adjustment rotary head 33 includes a second cylindrical body 331, a second conical body 332 integrally formed on one end surface of the second cylindrical body 331, a second operating handle block 333 integrally formed on the other end surface of the second cylindrical body 331 (a plurality of second anti-slip grooves 335 extending along the axial direction of the second operating handle block 333 are formed on the outer peripheral surface of the second operating handle block 333), and a second support rod sleeve hole 334 provided within the second conical body 332 and the second cylindrical body 331 and extending through the second operating handle block 333. The diameter of the second support rod sleeve hole 334 is larger than the inner diameter of the structure formed by the plurality of second limiting spacers 31. The only difference is that the second support rod sleeve hole 334 (having an internal thread) extends through the entire second adjustment rotary head 33, thereby allowing the entire second end adjustment mechanism 3 to be mounted on the support rod 11 (the corresponding portion of the support rod 11 is provided with an external thread). This allows the position of the second end adjustment mechanism 3 relative to the support assembly 1 to be adjusted significantly.

[0028] Therefore, when the first adjusting rotary head 23 and the second adjusting rotary head 33 are adjusted and move toward each other, the multiple first limiting pads 21 and the multiple second limiting pads 31 expand independently to clamp the round steel pipe sleeved outside them (the inner diameter of the round steel pipe is slightly larger than the outer diameter of the first limiting circular plate 12 or the second limiting circular plate 13, and its length is larger than the distance between the first limiting circular plate 12 and the second limiting circular plate 13 but smaller than the distance between the outer end face of the first operating handle block 233 and the outer end face of the second operating handle block 333), thereby achieving reliable clamping and fixation of the round steel pipe and facilitating processing of the outer surface of the round steel pipe.

[0029] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those familiar with the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications based on the spirit of the present invention are intended to be included in the scope of protection of the present invention.

Claims

1. A tension adjustment assembly for both ends of a round steel pipe, characterized in that: It includes: A support assembly (1), comprising a support rod (11), a first position-limiting circular plate (12) fixed to one end of the support rod (11), and a second position-limiting circular plate (13) detachably mounted on the other end of the support rod (11); A first end adjustment mechanism (2), the first end adjustment mechanism (2) comprising a plurality of first limiting pads (21) arranged outside the first limiting circular plate (12) and surrounding the support rod (11), a first elastic hoop (22), and a first adjustment rotary head (23) adjustably mounted on the end of the support rod (11) and cooperating with the plurality of first limiting pads (21), a first slot (211) being provided on the outer surface of each first limiting pad (21), and the first elastic hoop (22) being clamped in the first slots (211) of the plurality of first limiting pads (21); A second end adjustment mechanism (3), the second end adjustment mechanism (3) comprising a plurality of second limiting pads (31) arranged outside the second limiting circular plate (13) and surrounding the support rod (11), a second elastic hoop (32), and a second adjustment rotary head (33) adjustably mounted on the end of the support rod (11) and cooperating with the plurality of second limiting pads (31), a second slot (311) being provided on the outer surface of each second limiting pad (31), and the second elastic hoop (32) being clamped in the second slots (311) of the plurality of second limiting pads (31); When the first adjusting rotary head (23) and the second adjusting rotary head (33) are adjusted to move toward each other, the plurality of first limiting pads (21) and the plurality of second limiting pads (31) expand independently of each other to clamp the round steel pipe sleeved thereon.

2. The round steel pipe tension adjustment assembly according to claim 1, characterized in that: The axis center line of the first limiting circular plate (12) and the axis center line of the second limiting circular plate (13) both coincide with the axis center line of the support rod (11).

3. The round steel pipe tension adjustment assembly according to claim 1 or 2, characterized in that: The second limiting circular plate (13) is detachably mounted on the other end of the support rod (11) via threads or screws.

4. The round steel pipe tension adjustment assembly according to claim 3, characterized in that: When an internal thread is provided at the center of the second limiting circular plate (13), an external thread matching the internal thread is provided at the other end of the support rod (11).

5. The round steel pipe tension adjustment assembly according to claim 3, characterized in that: The circumferential surface of the second limiting circular plate (13) is provided with screw holes extending toward its axis, and the support rod (11) is provided with a plurality of installation holes arranged at intervals in the direction of its axis.

6. The round steel pipe tension adjustment assembly according to claim 1, characterized in that: The first adjusting rotary head (23) comprises a first cylindrical body (231), a first truncated cone body (232) integrally formed on one end surface of the first cylindrical body (231), a first operating handle block (233) integrally formed on the other end surface of the first cylindrical body (231), and a first support rod sleeve hole (234) provided in the first truncated cone body (232) and the first cylindrical body (231) and extending into the first operating handle block (233); the diameter of the first cylindrical body (231) is larger than the inner diameter of the structure formed by the plurality of first limiting pads (21).

7. The round steel pipe tension adjustment assembly according to claim 6, characterized in that: A plurality of first anti-slip grooves (235) extending along the axis direction of the first operating handle block (233) are provided on the outer peripheral surface of the first operating handle block (233).

8. The round steel pipe tension adjustment assembly according to claim 1, characterized in that: The second adjusting rotary head (33) comprises a second cylindrical body (331), a second frustum (332) integrally formed on one end face of the second cylindrical body (331), a second operating handle block (333) integrally formed on the other end face of the second cylindrical body (331), and a second support rod sleeve hole (334) provided in the second frustum (332) and the second cylindrical body (331) and extending through the second operating handle block (333), wherein the diameter of the second support rod sleeve hole (334) is larger than the inner diameter of the structure formed by the plurality of second limiting pads (31).

9. The round steel pipe tension adjustment assembly according to claim 8, characterized in that: A plurality of second anti-slip grooves (335) extending along the axis direction of the second operating handle block (333) are provided on the outer peripheral surface of the second operating handle block (333).

Images