阅读说明：本技术 一种具有万向滚珠球头的可调螺杆顶丝装置 (Adjustable screw jacking device with universal ball head ) 是由 康豫军 程勇明 安付立 吴晓俊 陈旭东 董雷 于 2021-01-13 设计创作，主要内容包括：本发明公开了一种具有万向滚珠球头的可调螺杆顶丝装置,包括滚珠球头、轴承座、螺杆、锁紧螺母及鞍座；螺杆的下端旋入于鞍座螺纹内,轴承座为中空结构,轴承座内设置有万向滚珠球,万向滚珠球的上侧自轴承座的顶部伸出到轴承座外,螺杆与轴承座为一体,螺杆与鞍座之间螺纹连接,该装置具有管系在热态可精确复位及顶丝免维护的特点。(The invention discloses an adjustable screw jacking device with a universal ball head, which comprises the ball head, a bearing seat, a screw, a locking nut and a saddle; the lower extreme screw in of screw rod is in the saddle screw thread, and the bearing frame is hollow structure, is provided with universal ball in the bearing frame, and outside the top of bearing frame was stretched out to the bearing frame to the upside of universal ball, screw rod and bearing frame are as an organic whole, threaded connection between screw rod and the saddle, and the device has the piping and can accurately reset and jackscrew non-maintaining characteristics at the hot attitude.)

1. An adjustable screw jacking device with a universal ball head is characterized by comprising a ball head (1), a bearing seat (2), a screw (3), a locking nut (4) and a saddle (5);

the lower extreme screw in of screw rod (3) is in the screw thread of saddle (5) and is locked with lock nut (4), and bearing frame (2) are hollow structure, are provided with universal ball (1) in bearing frame (2), and outside the upside of universal ball (1) stretched out bearing frame (2) from the top of bearing frame (2), the upper end and the bearing frame (2) of screw rod (3) are as an organic whole.

2. The adjustable screw jack device with ball-and-socket head according to claim 1, wherein the lock nut (4) is a hexagonal flat nut.

3. Adjustable screw jack device with ball-and-socket head according to claim 1, characterized in that the bottom of the saddle (5) is welded to an external steel structure.

4. The adjustable screw jack apparatus with ball-and-socket joint as claimed in claim 1, wherein a nut is sleeved on the screw, wherein the nut is located on the saddle.

5. The adjustable screw jacking device with ball-and-socket head as claimed in claim 1, wherein the ball-and-socket head is rotated to tighten the ball-and-socket head against the flat surface of the pipe clamp by using the low friction property of the ball-and-socket head when the pipe is hot.

6. The adjustable screw bolt jackscrew device with the ball head of the universal ball of claim 1, characterized in that, when installing, the screw bolt (3) is screwed into the proper depth through the thread of the saddle (5) in the cold state, the saddle (5) is welded on the steel structure at the installation point, after the pipeline reaches the hot state of the working temperature from the cold state, the jackscrew screwed out of the bearing seat (2) is clamped by a pipe wrench, so that the ball (1) of the universal ball contacts the plane of the pipe clamp saddle.

Technical Field

The invention belongs to the technical field of mechanical low-friction limiting and vibration damping, and relates to an adjustable screw jacking device with a universal ball head.

Background

At present, in the design of pipeline thermal expansion limit or pipeline vibration management schemes, bolt jackscrew devices without universal balls as shown in fig. 1 are commonly used, or limit sliding plates with non-adjustable limit quantity are installed, and the devices are used for limiting a certain thermal displacement quantity of a pipeline in a certain direction; and the device can also be used for applying certain loads or displacements to form nodes at certain points of the pipeline, so that the vibration response of the pipeline is reduced. For a space pipeline system, a common bolt jackscrew forms friction force on the thermal displacement of a pipeline vertical to an action plane of the bolt jackscrew, the thermal displacement of the pipeline on the plane is blocked, especially a pipeline system with the bolt jackscrew arranged at multiple points, the pipeline at the jackscrew position cannot be completely reset in a thermal state after cold and hot state circulation, partial jackscrew is empty, the limiting effect cannot be achieved or the vibration treatment effect is seriously influenced, the limiting device needs to be adjusted again in the pipeline thermal state, and maintenance-free operation cannot be achieved.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides an adjustable screw jacking device with a universal ball head, which has the characteristics that the pipe system can be accurately reset in a hot state and the jacking is maintenance-free.

In order to achieve the aim, the adjustable screw jacking device with the universal ball head comprises the ball head, a bearing seat, a screw, a locking nut and a saddle;

the lower extreme of screw rod inserts in the saddle, and the bearing frame is hollow structure, is provided with universal ball in the bearing frame, and outside the upside of universal ball stretched out the bearing frame from the top of bearing frame, screw rod and bearing frame are as an organic whole.

The screw rod is sleeved with a nut, wherein the nut is positioned on the saddle.

The locking nut is a hexagonal flat nut.

The bottom of the saddle is welded on an external steel structure.

The invention has the following beneficial effects:

when the adjustable screw jacking device with the universal ball head is in specific operation, the screw in the saddle is rotationally adjusted by utilizing the low friction performance of the universal ball in the hot state of a pipeline, so that the universal ball properly jacks against the plane of a pipeline pipe clamp to reach a design value limit value or form a damping node, and then the hexagonal flat nut is locked, so that the aims of accurate resetting in the hot state and maintenance-free adjustment of the jacking screw in the cold and hot state circulation of the pipeline are fulfilled, and the adjustable screw jacking device is convenient and simple to operate and has strong practicability.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a top view of the present invention.

Wherein, 1 is a universal ball, 2 is a bearing seat, 3 is a screw, 4 is a locking nut, and 5 is a saddle.

Detailed Description

The invention is described in further detail below with reference to the accompanying drawings:

referring to fig. 1 and 2, the adjustable screw jacking device with a universal ball head of the invention comprises a ball head 1, a bearing seat 2, a screw 3, a lock nut 4 and a saddle 5; the lower extreme screw in of screw rod 3 is in the screw thread of saddle 5, and bearing frame 2 is hollow structure, is provided with universal ball 1 in the bearing frame 2, and outside the upside of universal ball 1 stretched out bearing frame 2 from the top of bearing frame 2, screw rod 3 and bearing frame 2 are as an organic whole, threaded connection between screw rod 3 and the saddle 5.

A locking nut 4 is sleeved on the screw rod 3, wherein the locking nut 4 is positioned above the saddle 5; the locking nut 4 is a hexagonal flat nut; the bottom of the saddle 5 is welded to an external steel structure.

The universal ball 1 has low friction performance, changes sliding friction between steel and iron into bearing rolling friction, reduces the friction coefficient by two orders of magnitude, achieves the purposes of conveniently limiting the thermal expansion of the pipeline by a set amount or installing damping nodes and accurately resetting the thermal expansion of the pipeline, and can achieve the maintenance-free effect after being installed.

The specific installation and debugging process comprises the following steps: the screw 3 is screwed in the proper depth through the thread of the saddle 5 in the cold state, the saddle 5 is welded on a steel structure at the mounting point, the pipeline reaches the hot state of the working temperature from the cold state, the jackscrew screwed out from the bearing seat 2 is clamped by a pipe wrench, the universal ball 1 is contacted with the plane of the pipe clamp saddle, the jackscrew is screwed out a small amount of time to enable the universal ball 1 to exert proper jacking force on the surface of the pipe clamp saddle, and then the nut 4 is locked.