Inlet guide sleeve device of steel pipe rod loosening machine

Abstract

The utility model discloses an inlet guide sleeve device of a steel pipe rod loosening machine, which comprises a base, a buffer elastic mechanism, a fixed outer sleeve and a rotary inner sleeve, and the buffer elastic mechanism is movably mounted on the base; the fixed outer sleeve is mounted on the buffer elastic mechanism; the rotary inner sleeve is rotatably mounted in the fixed outer sleeve, and is provided with a through hole which is axially penetrated. Impact force caused by swinging of the tail of the steel pipe can be effectively relieved, the problem that the surface of the steel pipe is scratched is solved, and the surface quality and production efficiency of the steel pipe are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of steel pipe loose bar machine entry guide sleeve devices, belong to steel pipe production technical field. BACKGROUND

[0002] At present, in the steel processing process, the surface quality of steel pipe has important influence on the overall performance of product and market competitiveness. However, when the steel pipe enters the loose bar machine, due to the length of the steel pipe is long, especially when leaving the loose bar machine, the tail of the steel pipe is easy to swing. This swing can cause a large collision and friction between the steel pipe and the guide sleeve, thereby causing scratches and damage to the surface of the steel pipe, affecting the appearance of the product. Especially in high-efficiency production line, the frequency and speed of steel pipe running is high, the swing problem is more obvious, and the knocking phenomenon of steel pipe and guide sleeve is aggravated.

[0003] After searching the prior art, it is found that the patent with publication number CN112090993A discloses a straightening machine inlet double guide sleeve structure for reducing pipe body swing and its use method. The patent uses movable guide sleeve and fixed guide sleeve to reduce the knocking and scratching of steel pipe, but it is found that the space occupied is large during use, and the position of movable guide sleeve needs to be adjusted during use, which increases the operation complexity and maintenance difficulty. SUMMARY

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a steel pipe loose bar machine entry guide sleeve device that can effectively alleviate the impact force caused by the swing of the tail of the steel pipe, reduce the scratching problem of the surface of the steel pipe and improve the surface quality and production efficiency of the steel pipe.

[0005] To solve the above technical problems, the technical scheme of the utility model is as follows: a steel pipe loose bar machine entry guide sleeve device, comprising:

[0006] a machine base;

[0007] a buffer elastic mechanism movably installed on the machine base;

[0008] a fixed outer sleeve installed on the buffer elastic mechanism;

[0009] a rotating inner sleeve rotatably installed in the fixed outer sleeve, the rotating inner sleeve being provided with an axial through hole.

[0010] Further, at least one pair of mounting holes are provided on the machine base, and at least one pair of corresponding mounting holes are provided on the fixed outer sleeve;

[0011] The buffer elastic mechanism comprises:

[0012] A fastening rod has one end as a fixed end and the other end as a free end, and the free end is provided with a locking sleeve;

[0013] An upper-stage buffer spring is abutted between the fixed outer sleeve and the base;

[0014] A lower-stage buffer spring is abutted on the base and the locking sleeve respectively;

[0015] The fastening rod passes through the mounting through hole of the base, the upper-stage buffer spring, the mounting through hole of the fixed outer sleeve and the lower-stage buffer spring in sequence.

[0016] Further, the fastening rod is provided with threads on the outer diameter surface, the locking sleeve is provided with internal threads corresponding to the threads, and the locking sleeve is adjusted along the axial position of the fastening rod to adjust the pre-tightening force of the upper-stage buffer spring and the lower-stage buffer spring.

[0017] Further, the inlet end of the rotating inner sleeve is provided with a horn-shaped guide structure, and the guide structure gradually expands outward to form a conical channel.

[0018] Further, the buffer elastic mechanism is provided with four buffer elastic mechanisms and is fixed at the four corner positions of the fixed outer sleeve.

[0019] Further, at least one bearing is arranged between the rotating inner sleeve and the fixed outer sleeve, the inner ring of the bearing is in interference fit with the outer circumferential surface of the rotating inner sleeve, and the outer ring of the bearing is in interference fit with the inner circumferential surface of the fixed outer sleeve.

[0020] Further, the bearing is two, and the two bearings are arranged at the two ends of the rotating inner sleeve in the axial direction.

[0021] Further, a specific type of bearing is provided, and the bearing is a self-aligning roller bearing.

[0022] The above technical scheme has the following beneficial effects:

[0023] The steel pipe rod loosening machine inlet guide sleeve device provided by the utility model can effectively reduce the surface scratch problem of the steel pipe by relieving the impact force caused by the swinging of the tail of the steel pipe. Specifically, the buffer elastic mechanism arranged between the fixed outer sleeve and the base can effectively absorb the impact force generated when the tail of the steel pipe swings, thereby reducing the damage to the surface of the steel pipe. At the same time, the relative friction between the rotating motion and the steel pipe is reduced, the friction is dispersed, and the surface scratch is further effectively reduced.

[0024] Furthermore, during the process of the steel pipe passing through the bar loosening machine, the flared guide structure of the rotating inner sleeve can smoothly guide the steel pipe into the machine, avoiding collisions between the steel pipe and the fixed guide sleeve, and further reducing wear. By adjusting the buffer elastic mechanism, the preload of the upper and lower buffer springs can be adjusted as needed, thereby reducing the impact force. In addition, the self-aligning roller bearing is suitable for working under heavy loads or vibration loads, providing additional stability to the rotating inner sleeve, ensuring its smooth rotation and extending its service life.

[0025] In summary, this utility model solves the problem of surface scratches on steel pipes that easily occur during the production process of steel pipe loosening machines, thereby improving production efficiency and surface quality. Attached Figure Description

[0026] Figure 1 This is a cross-sectional structural schematic diagram of the inlet guide sleeve device of the steel pipe slack bar machine of this utility model;

[0027] Figure 2 This is a front view of the inlet guide sleeve device of the steel pipe loosening machine of this utility model. Detailed Implementation

[0028] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0029] like Figures 1-2 As shown, an inlet guide sleeve device for a steel pipe slack bar machine includes:

[0030] Base 1;

[0031] The buffer elastic mechanism 2 is movably mounted on the base 1.

[0032] The fixed outer cover 3 is installed on the cushioning elastic mechanism 2;

[0033] The rotating inner sleeve 4 is rotatably installed inside the fixed outer sleeve 3, and the rotating inner sleeve 4 is provided with an axial through hole.

[0034] In this embodiment, as Figure 1 As shown, the inlet guide sleeve device of the steel pipe loosening machine effectively reduces surface abrasion of the steel pipe by mitigating the impact force caused by the swinging of the steel pipe tail. Specifically, by setting a buffer elastic mechanism 2 between the fixed outer sleeve 3 and the machine base 1, the impact force generated when the steel pipe tail swings can be effectively absorbed, reducing damage to the steel pipe surface. At the same time, the rotational motion reduces relative friction and avoids force concentration, thereby further effectively reducing surface abrasion.

[0035] Specifically, such as Figures 1-2As shown, the base 1 has four mounting through holes, and the fixing sleeve 3 has four corresponding mounting through holes;

[0036] The buffer elastic mechanism 2 includes:

[0037] Fastening rod 23, one end of which is a fixed end and the other end is a free end, the free end is provided with a locking sleeve;

[0038] The upper buffer spring 21 has its two ends abutting between the fixed outer sleeve 3 and the machine base 1;

[0039] The lower buffer spring 22 has two ends that abut against the base 1 and the locking sleeve, respectively.

[0040] The fastening rod 23 passes through the mounting through hole of the base 1, the upper buffer spring 21, the mounting through hole of the fixing sleeve 3, and the lower buffer spring 22 in sequence.

[0041] Specifically, such as Figure 2 As shown, the outer diameter surface of the fastening rod 23 is provided with threads, and the locking sleeve is provided with internal threads corresponding to the threads. The locking sleeve is adjusted along the axial position of the fastening rod 23 to adjust the preload of the upper buffer spring 21 and the lower buffer spring 22.

[0042] Specifically, such as Figure 1 As shown, there are four buffer elastic mechanisms 2, which are fixed at the four corners of the fixed outer jacket 3.

[0043] In this embodiment, as Figures 1-2 As shown, the buffer elastic mechanism 2 connects the fixed jacket 3 to the base 1 through the fastening rod 23. During the installation process, the fixed end of the fastening rod 23 abuts against the base 1, and the free end passes through each component and is fixed by the locking sleeve, forming a complete elastic support structure.

[0044] By adjusting the position of the locking sleeve on the fastening rod 23, the compression of the upper buffer spring 21 and the lower buffer spring 22 can be changed simultaneously, thereby adjusting the preload. This adjustment method allows the device to adapt to the processing requirements of steel pipes of different specifications. When the steel pipe is heavier, the preload can be increased; when the steel pipe is lighter, the preload can be decreased to achieve the best buffering effect.

[0045] Four buffer elastic mechanisms 2 are evenly distributed at the four corners of the fixed outer sleeve 3. When the steel pipe sways during processing, the four buffer elastic mechanisms 2 can work together to absorb the impact force, so that the fixed outer sleeve 3 maintains a relatively stable working state and effectively reduces the scratches on the surface of the steel pipe.

[0046] Specifically, such as Figure 1As shown, the inlet end of the rotating inner sleeve 4 is provided with a trumpet-shaped guide structure, which gradually expands from the inside to the outside to form a conical channel.

[0047] In this embodiment, as Figure 1 As shown, the flared guide structure at the inlet end of the rotating inner sleeve 4 guides the steel pipe smoothly into the guide sleeve device. When the steel pipe enters, the gradually changing tapered channel ensures that the steel pipe is subjected to uniform force during insertion, avoiding impact caused by sudden contact between the steel pipe and the guide sleeve device.

[0048] During the steel pipe transportation process, the trumpet-shaped guide structure not only serves as a guide but also compensates for positional deviations during transportation. Through the guiding effect of the tapered channel, even if the steel pipe deviates slightly during transportation, it can be gradually corrected, ensuring that the steel pipe can smoothly pass through the axial through hole of the rotating inner sleeve 4.

[0049] Specifically, such as Figure 1 As shown, two bearings are provided between the rotating inner sleeve 4 and the fixed outer sleeve 3. The inner ring of the bearing is interference-fitted with the outer circumferential surface of the rotating inner sleeve 4, and the outer ring of the bearing is interference-fitted with the inner circumferential surface of the fixed outer sleeve 3.

[0050] Specifically, such as Figure 1 As shown, there are two bearings, which are respectively located at both ends of the rotating inner sleeve 4 along the axis.

[0051] Specifically, the bearing is a self-aligning roller bearing.

[0052] In this embodiment, as Figure 1 As shown, the rotating inner sleeve 4 is connected to the fixed outer sleeve 3 through a bearing. The bearing is assembled with the outer circumferential surface of the rotating inner sleeve 4 and the inner circumferential surface of the fixed outer sleeve 3 by an interference fit.

[0053] A self-aligning roller bearing is installed at each end of the axial direction of the rotating inner sleeve 4, forming a front and rear double support structure. At the same time, since the self-aligning roller bearing has an automatic self-aligning function, it can compensate for installation errors and bending deformation, so that the rotating inner sleeve 4 maintains good coaxiality during operation.

[0054] The use of self-aligning roller bearings not only provides reliable support, but also has a large radial load capacity and self-aligning capability. When the steel pipe passes through the guide sleeve device, even if a slight eccentric load occurs, the self-aligning roller bearing can automatically adjust its position to compensate, ensuring smooth rotation of the inner sleeve 4.

[0055] The specific embodiments described above further illustrate the technical problems, technical solutions, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A steel pipe loose bar machine entry guide bushing apparatus, characterized by, The utility model relates to a steel pipe rod loosening machine entrance guide sleeve device, including: Machine base (1); Buffer elastic mechanism (2), buffer elastic mechanism (2) swing mounting on machine base (1); Fixed outer cover (3), fixed outer cover (3) is installed on buffer elastic mechanism (2); Rotary inner cover (4), rotary inner cover (4) is rotatably installed in fixed outer cover (3), and rotary inner cover (4) is equipped with axial through hole.

2. The steel pipe rod loosening machine entrance guide sleeve device according to claim 1, wherein: At least one pair of mounting through holes are provided on the machine base (1), and at least one pair of corresponding mounting through holes are provided on the fixed outer cover (3); The buffer elastic mechanism (2) comprises: A fastening rod (23) having a fixed end at one end and a free end at the other end, wherein the free end is provided with a locking sleeve; An upper buffer spring (21) abutting between the fixed outer cover (3) and the machine base (1) at both ends; A lower buffer spring (22) abutting on the machine base (1) and the locking sleeve at both ends respectively; Wherein, the fastening rod (23) passes through the mounting through hole of the machine base (1), the upper buffer spring (21), the mounting through hole of the fixed outer cover (3) and the lower buffer spring (22) in sequence.

3. The steel pipe rod loosening machine entrance guide sleeve device according to claim 2, wherein: A thread is provided on the outer diameter surface of the fastening rod (23), and an internal thread corresponding to the thread is provided on the locking sleeve, and the locking sleeve is adjusted along the axial position of the fastening rod (23) to adjust the pre-tightening force of the upper buffer spring (21) and the lower buffer spring (22).

4. The steel pipe rod loosening machine entrance guide sleeve device according to claim 1, wherein: A horn-shaped guide structure is provided at the inlet end of the rotary inner cover (4), and the guide structure gradually expands from inside to outside to form a conical passage.

5. The steel pipe rod loosening machine entrance guide sleeve device according to claim 1, wherein: Four buffer elastic mechanisms (2) are provided, and each is fixed at a corner position of the fixed outer cover (3).

6. The steel pipe rod loosening machine entrance guide sleeve device according to claim 1, wherein: At least one bearing is provided between the rotary inner cover (4) and the fixed outer cover (3), the inner ring of the bearing is in interference fit with the outer circumferential surface of the rotary inner cover (4), and the outer ring of the bearing is in interference fit with the inner circumferential surface of the fixed outer cover (3).

7. The steel pipe rod loosening machine entrance guide sleeve device according to claim 6, wherein: The bearing is two, and the two bearings are respectively arranged at both ends of the rotary inner cover (4) in the axial direction.

8. The steel pipe rod loosening machine entrance guide sleeve device according to claim 6, wherein: The bearing is a self-aligning roller bearing.

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