阅读说明：本技术 一种上下死点位置自锁的多连杆式升降卡轴机构 (multi-link type lifting shaft clamping mechanism with self-locking upper and lower dead point positions ) 是由 邵中魁 黄建军 何朝辉 姜耀林 沈小丽 马彬荣 朱征东 陈婧 于 2019-11-13 设计创作，主要内容包括：本发明涉及一种多连杆式升降卡轴机构,它属于工装夹具领域。本发明包括机架、底板、导向滑块、升降杆、卡轴、压杆、销轴安装支座、锁紧推杆、小滑块、弹簧支架、弹簧柱塞、上死点位置限位块和下死点位置限位块,底板在机架上,升降杆在导向滑块内,升降杆一端与卡轴相连,升降杆另一端与压杆相连,压杆与销轴安装支座连接,销轴安装支座装在底板上,锁紧推杆一端与压杆连接,锁紧推杆另一端与小滑块连接,小滑块在底板上,弹簧支架在底板上,弹簧柱塞装在弹簧支架上,弹簧柱塞与小滑块接触,上死点位置限位块和下死点位置限位块均安装在底板上。本发明结构简单合理,成本低廉,操作及维护方便,劳动强度低,自动化程度高,满足使用需求。(The invention relates to multi-connecting-rod type lifting shaft clamping mechanism, which belongs to the field of tool fixtures and comprises a rack, a bottom plate, a guide sliding block, a lifting rod, a clamping shaft, a pressure rod, a pin shaft mounting support, a locking push rod, a small sliding block, a spring support, a spring plunger, an upper dead point position limiting block and a lower dead point position limiting block, wherein the bottom plate is arranged on the rack, the lifting rod is arranged in the guide sliding block, the end of the lifting rod is connected with the clamping shaft, the other end of the lifting rod is connected with the pressure rod, the pressure rod is connected with the pin shaft mounting support, the pin shaft mounting support is arranged on the bottom plate, the end of the locking push rod is connected with the pressure rod, the other end of the locking push rod is connected with the small sliding block, the small sliding block is arranged on the bottom plate, the spring support is arranged on the spring support, the spring plunger is contacted with the small sliding block, and the upper dead point position limiting block and the lower dead point position limiting block are.)

The multi-connecting-rod type lifting shaft clamping mechanism capable of self-locking upper and lower dead point positions comprises a rack and a bottom plate, wherein the bottom plate is fixed on the rack, and the multi-connecting-rod type lifting shaft clamping mechanism is characterized by further comprising a guide sliding block, a lifting rod, a clamping shaft, a pressing rod, a pin shaft mounting support, a locking push rod, a small sliding block, a spring support, a spring plunger, an upper dead point position limiting block and a lower dead point position limiting block, wherein the lifting rod is movably arranged in the guide sliding block, the end of the lifting rod is connected with the clamping shaft, the other end of the lifting rod is connected with the pressing rod, the pressing rod is connected with the pin shaft mounting support, the pin shaft mounting support is arranged on the bottom plate, the end of the locking push rod is connected with the pressing rod, the other 2 end of the locking push rod is connected with the small sliding block, the small sliding block is movably arranged on the bottom plate, the spring support is fixed on.

2. The multi-link lifting shaft clamping mechanism with self-locking of the upper dead point and the lower dead point according to claim 1, which is characterized in that: the pressing rod is sequentially provided with a pin shaft hole for connecting with the pin shaft mounting support, a U-shaped groove hole for connecting with the bottom of the lifting rod and a pin shaft hole for connecting with the locking push rod from left to right, and the U-shaped groove hole is positioned between the two pin shaft holes.

3. The multi-link lifting shaft clamping mechanism with the self-locking function at the upper dead point and the lower dead point as claimed in claim 1, wherein the bottom plate is provided with a horizontal U-shaped slotted hole, and the central axis of the horizontal U-shaped slotted hole, the center of circle of the pin shaft hole of the pin shaft mounting support and the central axis of the spring plunger are positioned at the same horizontal height.

4. The multi-link shaft-clamping mechanism with self-locking at top and bottom dead center positions as claimed in claim 1, wherein the left end of the pressure lever is hinged to the pin shaft mounting seat through a pin shaft, the right end of the pressure lever is hinged to the end of the locking push rod through a pin shaft, and the other end of the locking push rod is hinged to the small slide block through a pin shaft.

5. The multi-link lifting shaft clamping mechanism with self-locking of the upper dead point and the lower dead point according to claim 3, which is characterized in that: the small sliding block is arranged in a horizontal U-shaped slot of the bottom plate, and the small sliding block moves horizontally and linearly in the horizontal U-shaped slot.

6. The multi-link lifting shaft clamping mechanism with self-locking of the upper dead point and the lower dead point according to claim 2, which is characterized in that: the lower end of the lifting rod is connected with a U-shaped groove hole of the pressure rod through a pin shaft.

7. The multi-link lifting shaft clamping mechanism with the self-locking upper and lower dead center positions according to claim 1, wherein the lifting rod is vertically arranged in the guide sliding block to form translational motion pairs.

8. The multi-link lifting shaft clamping mechanism with self-locking of the upper dead point and the lower dead point according to claim 1, which is characterized in that: the spring support, the guide sliding block, the pin shaft mounting support, the upper dead point position limiting block and the lower dead point position limiting block are fixed on the bottom plate through bolts.

9. The multi-link lifting shaft clamping mechanism with self-locking of the upper dead point and the lower dead point according to claim 1, which is characterized in that: the bottom plate is fixed on the frame through bolts.

Technical Field

The invention relates to tool mechanisms, in particular to a multi-connecting-rod type lifting shaft clamping mechanism with self-locking upper and lower dead point positions, and belongs to the technical field of tool fixtures.

Background

The tool fixture is an indispensable production auxiliary device in the industrial production and manufacturing process, plays a very important role in the whole manufacturing system, any procedure in the production process of products needs to be realized by adopting the tool fixture to quickly, conveniently and safely install and fix workpieces, and the reasonable and efficient tool fixture not only can greatly ensure the processing precision of the workpieces, stabilize the product quality, improve the production efficiency and reduce the production cost, but also can improve the labor condition of workers, ensure the safe production, even can expand the process range of machine tools, and realize ' machine multiple uses'.

For example, in the production and manufacturing process of the hydraulic cylinder, important processes are that the cylinder barrel and a cylinder cover are required to be screwed and assembled into a whole cylinder in a threaded connection mode, when a worker screws and assembles the cylinder barrel, the worker needs hands to take a prying bar to insert a C-shaped oil nozzle outside the cylinder barrel for blocking so as to prevent the cylinder barrel from rotating, and the hands take a wrench to screw into the cylinder cover until the cylinder barrel is screwed.

The publication date is 03 and 21 in 2012, and chinese patent publication No. 102383966a discloses invention patents named as "connecting structure and connecting method of cylinder barrel and cylinder cover", the cylinder barrel and cylinder cover of the patent are in interference fit through sawtooth-shaped threads.

At present, mature and reliable special tool fixtures do not exist in oil cylinder production enterprises in China for the cylinder barrel and cylinder cover screwing assembly process, and most enterprises still adopt the mode that the cylinder barrel is manually clamped by the crowbar.

Therefore, it is especially necessary to develop sets of multi-link lifting shaft clamping mechanisms with self-locking upper and lower dead point positions, which are simple in structure, low in cost, convenient and practical, and serve as special tool fixtures for screwing and assembling cylinder barrels and cylinder covers.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides multi-connecting-rod type lifting shaft clamping mechanisms with self-locking upper and lower dead point positions, which have the advantages of simple and reasonable structural design, safety, reliability, low cost, convenience in operation and maintenance, reduced labor intensity of workers, improved automation degree and good assembling quality stability.

The invention solves the problems by adopting the technical scheme that the multi-connecting-rod type lifting shaft clamping mechanism with the self-locking upper dead point and lower dead point comprises a rack and a bottom plate, wherein the bottom plate is fixed on the rack, and the multi-connecting-rod type lifting shaft clamping mechanism is characterized by further comprising a guide sliding block, a lifting rod, a clamping shaft, a pressing rod, a pin shaft mounting support, a locking push rod, a small sliding block, a spring support, a spring plunger, an upper dead point position limiting block and a lower dead point position limiting block, wherein the lifting rod is movably arranged in the guide sliding block, the end of the lifting rod is connected with the clamping shaft, the other end of the lifting rod is connected with the pressing rod, the pressing rod is connected with the pin shaft mounting support, the pin shaft mounting support is arranged on the bottom plate, the end of the locking push rod is connected with the pressing rod, the other end of the locking push rod is connected with the small sliding block, the small sliding block is movably arranged on the bottom plate, the spring support.

Preferably, the press rod is provided with a pin shaft hole for connecting with the pin shaft mounting support, a U-shaped groove hole for connecting with the bottom of the lifting rod and a pin shaft hole for connecting with the locking push rod in sequence from left to right, and the U-shaped groove hole is positioned between the two pin shaft holes.

Preferably, the bottom plate of the invention is provided with a horizontal U-shaped slotted hole, and the central axis of the horizontal U-shaped slotted hole, the center position of the pin shaft hole of the pin shaft mounting support and the central axis of the spring plunger are positioned at the same horizontal height position.

Preferably, the left end of the pressure lever is hinged with the pin shaft mounting support through a pin shaft, the right end of the pressure lever is hinged with the end of the locking push rod through a pin shaft, and the other end of the locking push rod is hinged with the small sliding block through a pin shaft.

Preferably, the small sliding block is arranged in a horizontal U-shaped groove hole of the bottom plate, and the small sliding block moves in the horizontal U-shaped groove hole in a horizontal straight line mode.

Preferably, the lower end of the lifting rod is connected with a U-shaped groove hole of the pressure rod through a pin shaft.

Preferably, the lifting rod is vertically arranged in the guide sliding block to form translation motion pairs with the guide sliding block.

Preferably, the spring support, the guide sliding block, the pin shaft mounting support, the upper dead point position limiting block and the lower dead point position limiting block are fixed on the bottom plate through bolts.

Preferably, the bottom plate is fixed on the frame through bolts.

Compared with the prior art, the invention has the advantages and effects of 1, simple and reasonable overall structure design, low cost, reliability, durability, convenient operation and maintenance, reduced labor intensity of workers, improved automation degree, improved assembly efficiency and good assembly quality stability, 2, the upper dead point position and the lower dead point position of the lifting shaft clamping mechanism can realize self-locking, the self-locking force can be adjusted by changing the spring constant and the spring compression length of the plunger spring, 3, the universality is good, the applicability is strong, the invention is very suitable for being used as a special tool clamp for tightening and assembling the cylinder cover of the hydraulic cylinder product by only adjusting the shaft clamping structure type, the positions of the upper dead point limit block and the lower dead point limit block and adjusting the locking force, and can also be used for universal pushing to be applied to the production and manufacturing fields of other.

Drawings

Fig. 1 is a schematic structural diagram of a lifting shaft clamping mechanism at a top dead center position according to an embodiment of the invention.

Fig. 2 is a schematic structural diagram of the lifting shaft clamping mechanism at the bottom dead center position according to the embodiment of the invention.

In the figure: the device comprises a frame 1, a spring support 2, a spring plunger 3, a small sliding block 4, a locking push rod 5, a guide sliding block 6, a lifting rod 7, a clamping shaft 8, a bottom plate 9, an upper dead point position limiting block 10, a pin shaft mounting support 11, a pressing rod 12 and a lower dead point position limiting block 13.

Detailed Description

The present invention will now be described in further detail in by way of example with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limited by the following examples.