CN106799697A - Latch positions formula spanner clamping device - Google Patents

Abstract

The invention discloses a latch positioning type wrench clamping mechanism. The mechanism used to clamp the bolt when the wrench tightens the bolt is composed of four parts: the fixed end, the movable end, the latch mechanism, and the slot fine-tuning mechanism; the movable end slides in the track of the fixed end to adjust the opening size of the clamping mechanism, and the latch mechanism The pressing of the button is used to control the expansion and contraction of the bolt, and the slot is used for the positioning of the bolt. After the movable end slides in the track of the fixed end to adjust the spacing, release the button to insert the pin into the slot to achieve positioning. The advantage of the present invention is that the clamping mechanism adjusts the size of the opening by sliding the movable end in the positioning track, and after the size is adjusted in place, it is positioned by the bolt, which is stable and reliable, and has high efficiency; a button-type potentiometer is installed in the bolt positioning mechanism for detection with the matching control system The opening size of the clamping mechanism realizes the automatic calculation of the required torque value.

Description

Pin positioning wrench clamping mechanism

technical field

The invention relates to a bolt positioning type wrench clamping mechanism, which is especially suitable for emergency repair tasks and occasions requiring high precision in applying pretightening force to connecting parts.

Background technique

Threaded connection is one of the most widely used connection methods, and has a large number of applications in civilian equipment and military equipment. All threaded connections need to be pre-tightened. Improper application of pre-tightened force may lead to equipment failure and serious accidents. At present, there are mainly two methods of applying proper preload: relying on experience and using a torque wrench. The method of relying on experience is widely used in occasions where the preload is not required to be high. This method has large errors and has certain potential safety hazards. Torque wrench is mainly used to control the proper pre-tightening force, but due to the lack of technical data, the setting value of torque wrench still depends on experience, which loses the meaning of using torque wrench.

Improper pre-tightening force applied to the threaded connection will affect the efficiency of engineering maintenance and increase labor costs. Especially in the field of emergency repairs, the reduction in repair efficiency may lead to delays in fighter jets, loss of favorable battlefield conditions, and serious consequences.

Contents of the invention

In view of the problems that the existing torque wrench is not widely used, the degree of intelligence is not high, and the use efficiency is low, the present invention realizes the rapid adjustment of the opening size of the wrench clamping mechanism by adopting the relative movement of the movable end and the fixed end, and the positioning of the latch mechanism. To clamp the corresponding bolts, the mechanism also installs a contact switch on the pin positioning mechanism as a sensor to detect the size of the wrench opening, and the corresponding control system can realize the identification of bolt specifications. The invention can be used with a control system to identify bolt specifications and automatically calculate the required torque value of the bolt, thereby improving the intelligence of the torque wrench.

The technical solution adopted by the bolt positioning wrench clamping mechanism of the present invention to solve its technical problems is: the mechanism is composed of several parts such as a fixed end, a movable end, a bolt telescopic mechanism and a slot fine-tuning mechanism. The movable end is integrated with the bolt telescopic mechanism, and the bolt telescopic mechanism is installed on the fixed end, and the slider at the movable end moves in the fixed end chute, and the positioning and release are realized by controlling the stretching of the bolt by the bolt telescopic mechanism. A contact switch is installed at the bottom of the slot in the slot fine-tuning mechanism as a sensor for detecting the opening size of the clamping mechanism.

The position of the slot determines the size of the opening of the clamping mechanism, and the size of the opening is determined according to the size of the hexagonal head of each specification bolt within the scope of application of the clamping mechanism. According to the national standard data, the size of the hexagonal head of the C-level ordinary hexagonal bolt of the same specification is the same as that of the corresponding nut, so the clamping mechanism determined according to the size of the hexagonal head of the bolt is also applicable to the nut. The applicable object of the present invention is the first series of thread specifications within the range of C-level ordinary hexagon head bolts specified in the national standard GB/T 5780-2000 and the first series of thread specifications within the range of C-level ordinary hexagon nuts M5-M30 specified in GB/T41-2000. The positioning position of the clamping mechanism is only suitable for the disassembly and assembly of bolts of various specifications within the scope of the applicable object.

The feature of the present invention is to quickly adjust the size of the clamping opening, stably fix the position of the movable end, and can be matched with a control system to realize automatic identification of bolt specifications and improve the intelligence of the torque wrench.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention is further described:

Figure 1 The overall schematic diagram of the pin positioning wrench clamping mechanism

Figure 2 Schematic diagram of the installation of the fixed end and the slot fine-tuning mechanism

Figure 3 The movable end and the bolt telescopic mechanism - the schematic diagram of the bolt extending

Figure 4 The movable end and the bolt retractable mechanism - the schematic diagram of the bolt retracted

Figure 5 Schematic diagram of the bolt telescopic mechanism

Among Fig. 1: 101. fixed end, 102. movable end, 103. latch telescoping mechanism, 104. slot fine-tuning mechanism.

Among Fig. 2: 201. slot, 202. slot adjustment bolt, 203. compression spring, 204. contact switch.

Among Fig. 3: 301. upper slider, 302. lower slider, 303. button, 304. upper latch, 305. lower latch.

Among Fig. 5: 401. connecting rod, 402. return spring.

detailed description

Please refer to FIG. 1 , the clamping mechanism of the pin positioning type wrench is composed of a fixed end 101 , a movable end 102 , a pin telescopic mechanism 103 and a slot fine-tuning mechanism 104 .

Please refer to Fig. 1 and Fig. 2, the slot fine-tuning mechanism 104 is composed of a slot 201, an adjusting bolt 202, a compression spring 203 and a contact switch 204, and is installed on the fixed end 101, and the installation position relationship is shown in Fig. 2 . The position of the slot 201 is slightly adjusted to realize the small adjustment of the opening size of the clamping mechanism, and adaptive adjustment can be performed when the set clamping opening size cannot adapt to the bolt head with a large error. When the adjusting bolt 202 is turned clockwise, the slot 201 will move to the right, the compression spring 203 will be compressed, and the opening size of the clamping mechanism will decrease; when the adjusting bolt 202 is turned counterclockwise, the slot 201 will move to the left, When the compression spring 203 is released, the opening size of the clamping mechanism will increase. A contact switch 304 is installed at the bottom of each slot, which is used as a sensor to cooperate with a control system to identify bolt specifications.

Please refer to FIG. 1 , FIG. 3 , FIG. 4 , and FIG. 5 , the latch retractable mechanism 103 is composed of a button 303 , a connecting rod 401 , an upper latch 304 , a lower latch 305 and a return spring 402 . The principle of the bolt retractable mechanism 103 is to use two sets of double slider mechanisms to control the extension and contraction of the upper bolt 304 and the lower bolt 305 respectively, the connecting rod 401 is the connecting rod of the double slider mechanism, and the button 303 and the upper and lower bolts are double sliders. Slider in Mechanism.

Please refer to Fig. 1, Fig. 2, Fig. 3, Fig. 4, and Fig. 5, the bolt telescopic mechanism 103 is installed on the movable end 102, the slot fine-tuning mechanism 104 is installed on the fixed end 101, and the bolt retracts when the button in the bolt telescopic mechanism 103 is pressed, The movable end 102 can slide in the fixed end 101 to adjust the opening size of the clamping mechanism. After the adjustment of the opening size of the clamping mechanism is completed, the button 303 is released, and the upper and lower pins are stretched out under the action of the return spring 402, and inserted into the corresponding slots to play a positioning role. Since not all bolts work at every stop position of the movable end 102, a slide groove is designed at the joint between the bolts (304, 305) and the pin shaft of the connecting rod 401, so that the button 303 has no corresponding position of the slot when it is pushed up. The pins (304, 305) of the pins may not be stretched out, so as to realize the hierarchical multiplexing of the three pins. When a plug (304, 305) is inserted into the slot 201, the corresponding contact switch 204 at the bottom of the slot is turned on, which can be used for the control system to identify the specification of the bolt.

Claims (5)

1. a kind of latch for assembling and disassembling bolt positions formula spanner clamping device, it is characterized in that：Movable end is slided in fixing end track and Regulation openings of sizes；Realize that movable end is positioned by the way of latch insertion slot；Slot micro-adjusting mechanism is used to adjust slot Minute movement.

2. latch according to claim 1 positions formula spanner clamping device, and movable end is characterized in：The sliding shoe of movable end is solid Slided in the guide rail of fixed end, latch telescoping mechanism is installed in the sliding shoe of movable end, when latch shrinks, movable end can be in fixation Moved in end, latch is stretched out when in insertion slot, and movable end is fixed.

3. slot micromotion mechanism according to claim 1, it is characterized in that：Slot is installed in fixing end, and one end is installed and holds out against bullet Spring, the other end installs adjusting screw rod, and the displacement of guide groove is finely tuned by rotary screw.

4. slot micromotion mechanism according to claim 1, it is characterized in that：Slot bottom is installed contact-making switch and serves as sensor, is used In collocation control system detection clamping device openings of sizes.

5. latch telescoping mechanism according to claim 2, it is characterized in that：Latch telescoping mechanism realizes button using double-slider mechanism Control the flexible of latch；When button is pressed, latch shrinks, and when button is ejected, latch stretches out, and latch bottom is provided with reset Spring, there is provided the power that latch stretches out.