阅读说明：本技术 一种快速进退螺杆的顶紧装置 (Tight device in top of quick advance and retreat screw rod ) 是由 刘夏 顾鹏 刘闯 欧希斌 李强 张磊 张宏伟 张艺群 郭有胜 于 2020-06-09 设计创作，主要内容包括：本发明涉及一种顶紧装置,属于工装夹具技术领域。尤其是涉及大重型结构件焊接或加工中,对大重型结构件进行快速的顶紧固定和退回顶紧螺杆的定位装置。包括固定底座、换位机构、螺杆、垫块和压头,所述换位机构穿过固定底座和固定底座连接,螺杆旋转穿过并安装在换位机构上,压头与螺杆的圆头端连接,垫块和压头连接。换位机构由导向限位筒座、两翼螺母、端盖法兰和手柄组成,双翼螺母沿着导向限位筒座内筒壁和导向槽装入导向限位筒座内部,端盖法兰和导向限位筒座连接,手柄和双翼螺母连接。本发明的优点是结构新颖,操作简单,减少旋转螺纹的劳动强度,安全可靠。(The invention relates to a jacking device, and belongs to the technical field of tool fixtures. In particular to a positioning device for rapidly jacking, fixing and retreating a jacking screw rod of a large and heavy structural member in the welding or processing of the large and heavy structural member. The automatic transposition mechanism comprises a fixed base, a transposition mechanism, a screw, a cushion block and a pressure head, wherein the transposition mechanism penetrates through the fixed base to be connected with the fixed base, the screw is rotated to penetrate through and is installed on the transposition mechanism, the pressure head is connected with the round head end of the screw, and the cushion block is connected with the pressure head. The transposition mechanism consists of a guide limiting cylinder seat, two-wing nuts, an end cover flange and a handle, wherein the two-wing nuts are arranged inside the guide limiting cylinder seat along the inner cylinder wall of the guide limiting cylinder seat and a guide groove, the end cover flange is connected with the guide limiting cylinder seat, and the handle is connected with the two-wing nuts. The invention has the advantages of novel structure, simple operation, reduced labor intensity for rotating the thread, safety and reliability.)

1. The utility model provides a top tight device of quick advance and retreat screw rod which characterized in that: including unable adjustment base 2, transposition mechanism 2, screw rod 3, cushion 4 and pressure head 5, transposition mechanism 2 passes unable adjustment base 1 and is connected, and the screw rod 3 is rotatory to be passed and to be installed on transposition mechanism 2, and pressure head 5 is connected with the button head end of screw rod 3, and cushion 4 and pressure head 5 are connected.

2. The tightening device of a quick-advancing and retreating screw according to claim 1, wherein: the transposition mechanism 2 is composed of a guide limiting cylinder seat 201, a two-wing nut 202, an end cover flange 203 and a handle 204, the two-wing nut 202 is arranged inside the guide limiting cylinder seat 201 along the inner cylinder wall 20103 and the guide groove 20102 of the guide limiting cylinder seat 201, the end cover flange 203 is connected with the guide limiting cylinder seat 201, and the handle 204 is connected with the two-wing nut 202.

3. The tightening device of a quick-advancing and retreating screw according to claim 1, wherein: the double-wing nut 202 is cylindrical in main body, the inner wall of the double-wing nut is an internal thread, two symmetrical protruding blocks 20202 are arranged at the end of the double-wing nut 202 and are in a double-wing shape, the protruding blocks 20202 are matched with the guide grooves 20102 and the limiting clamping grooves 20101 of the guide limiting cylinder base 201 to slide, and the cylindrical outer wall 20201 of the double-wing nut 202 is matched with the inner wall 20103 of the guide limiting cylinder base 201 to slide.

Technical Field

The invention relates to a jacking device, and belongs to the technical field of tool fixtures. In particular to a positioning device for rapidly jacking, fixing and retreating a jacking screw rod of a large and heavy structural member in the welding or processing of the large and heavy structural member.

Background

In the welding or processing of large and heavy structural members, especially in the case of mass production using special tools or machine tools, the screw structure device used for abutting and fixing cannot be freely disassembled, assembled and moved, and is safe and reliable. Because the factory often uses this kind of hoist and mount form of overhead traveling crane collocation rope to hoist and mount big heavy structure spare for big heavy structure spare moves the in-process at vertically and level etc. and produces easily and rock and bump the tight device in top, so at the big heavy structure spare in-process of loading and unloading, the tight screw rod in top of guaranteeing the tight device in top moves back to certain safe distance. However, this safety distance becomes a cause of increasing labor cost in advancing and retracting the screw by manually rotating the screw, and particularly, production efficiency is seriously affected in mass production and in a process of manually rotating a plurality of tightening screws.

According to the technical problem, the design requirements are provided for the jacking device, and the jacking device mainly comprises: the repeated work of the rotary screw is reduced, the labor intensity is reduced, the production efficiency is improved, and meanwhile, the economic benefit, safety and reliability are considered. Aiming at the design requirements, a jacking device for rapidly advancing and retreating the screw is developed, the screw can be rapidly advanced and retreated for a certain distance through a small amount of operating screws, and the jacking device is high in cost performance, safe and reliable.

Disclosure of Invention

The present invention is directed to a device for rapidly advancing and retracting a screw to solve the above problems.

The invention changes the tightening mode of the former fixed screw hole and screw rod combination, and changes the fixed screw hole into a movable mode of the special-shaped nut in the guide limiting cylinder, and the mode can quickly move the former screw hole and screw rod combination integrally forward and backward.

The technical scheme adopted by the invention is as follows: the utility model provides a tight device in top of quick advance and retreat screw rod, includes unable adjustment base, transposition mechanism, screw rod, cushion and pressure head, transposition mechanism passes unable adjustment base and unable adjustment base to be connected, and the screw rod is rotatory to be passed and to be installed on transposition mechanism, and the pressure head is connected with the button head end of screw rod, and cushion and pressure head are connected.

The structure of the transposition mechanism is as follows: the transposition mechanism consists of a guide limiting cylinder seat, two-wing nuts, an end cover flange and a handle, wherein the two-wing nuts are arranged inside the guide limiting cylinder seat along the inner cylinder wall of the guide limiting cylinder seat and a guide groove, the end cover flange is connected with the guide limiting cylinder seat, and the handle is connected with the two-wing nuts.

The double-wing nut is characterized in that the double-wing nut main body is cylindrical, the inner wall of the double-wing nut main body is an internal thread, two symmetrical protruding blocks are arranged at the end of the double-wing nut main body and present a double-wing shape, the protruding blocks are matched with the guide groove and the limiting clamping groove of the guiding limiting cylinder seat to slide, and the outer wall of the double-wing nut cylindrical shape is matched with the inner wall of the guiding limiting cylinder seat to slide.

The length of the guide groove determines the distance for rapidly advancing and retracting the screw and also determines the reduced workload of rotating the screw.

Compared with a single bump and a plurality of bumps, the number of bumps of the double-wing nut is uniform in stress, stable and reliable, low in cost and the like.

The invention has the advantages of novel structure, simple operation, reduced labor intensity for rotating the thread, safety and reliability.

Drawings

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

FIG. 2 is a schematic view of the indexing mechanism of the present invention;

FIG. 3 is a schematic structural view of the double-wing nut of the present invention;

fig. 4 is a schematic structural view of a guide limiting cylinder seat of the invention.

Detailed Description

In the following, referring to the drawings in the embodiments of the present invention, the transposing mechanism 2 passes through the fixed base 1 and is fixed on the fixed base 1, the screw 3 is rotatably passed through and mounted on the transposing mechanism 2, the pressing head 5 is connected with the round end of the screw 3, and the cushion block 4 is connected with the pressing head 5.

The structure of the transposition mechanism 2 is as follows: the double-wing nut 202 is arranged inside the guide limiting cylinder seat 201 along the inner cylinder wall 20103 of the guide limiting cylinder seat and the guide groove 20102, the end cover flange 203 is connected with the guide limiting cylinder seat 201, and the handle 204 is connected with the double-wing nut 202.

The double-wing nut 202 is cylindrical in main body, the inner wall of the double-wing nut 202 is an internal thread, two symmetrical protruding blocks 20202 are arranged at the end part of the double-wing nut 202, the protruding blocks 20202 are matched with the guide groove 20102 and the limiting clamping groove 20101 of the guide limiting cylinder base 201 to slide, and the cylindrical outer wall 20201 of the double-wing nut 202 is matched with the inner cylinder wall 20103 of the guide limiting cylinder base to slide. The direction of the limiting clamping groove 20101 is the same as the thread direction of the screw rod 3, and the right-handed direction is selected in the embodiment.

When the double-wing nut 202 pushing device is used, the pushing device is installed on a working platform, a workpiece is placed on the working platform when a screw rod 3 of the pushing device is in a retreating state, then the handle 204 is pushed, the convex blocks 20202 of the double-wing nut 202 move along the guide grooves 20102 of the guide limiting cylinder base 201, finally the handle 204 is rotated, the convex blocks 20202 of the double-wing nut 202 enter the limiting clamping grooves 20101 of the guide limiting cylinder base 201, and the screw rod 3 is rotated until the workpiece is pushed tightly. After the welding or machining operation is finished, the screw 3 is reversely rotated to release the tight-pushing state, and then the screw 3 can be rapidly retracted by reversely operating the handle 204.

The present invention is not limited to the application in the horizontal direction in the embodiment, and the presentation space angle or the vertical direction may be applied.