CN113211059A

CN113211059A - Pneumatic auxiliary tightening device for one-way valve

Info

Publication number: CN113211059A
Application number: CN202110648137.8A
Authority: CN
Inventors: 吴郁婷; 张晓虎; 杨欢; 唐显君; 李志军; 刘璐
Original assignee: Sichuan Aerospace Changzheng Equipment Manufacturing Co Ltd
Current assignee: Sichuan Aerospace Changzheng Equipment Manufacturing Co Ltd
Priority date: 2021-06-10
Filing date: 2021-06-10
Publication date: 2021-08-06

Abstract

The invention discloses a pneumatic auxiliary tightening device for a one-way valve, which comprises a support, a pneumatic device, a clamping block, a clamp and a rotating shaft, wherein the pneumatic device, the clamping block, the clamp and the rotating shaft are fixed on the support, the support is provided with a clamping block sliding groove, the clamping block is arranged in the clamping block sliding groove, the rotating shaft is connected with the support through a rotating shaft support, the rotating shaft is connected with the clamp, and the rotating shaft support is also provided with a hand wheel. The device is simple and convenient to operate, the time for screwing the single piece is about 40s, which is equivalent to the time of a skilled operator, but the labor force is greatly saved, female operators and unskilled workers can easily and quickly operate the device, meanwhile, the automation and specialization degree of the screwing device are improved through pneumatic control, and the feedback of the operators is good.

Description

Pneumatic auxiliary tightening device for one-way valve

Technical Field

The invention belongs to the technical field of assembly auxiliary equipment, and relates to a pneumatic auxiliary tightening device for a one-way valve.

Background

With the continuous development of manufacturing technology, the tightening device is widely applied to the tightening of bolts during the assembly of automobile workpieces. Existing tightening devices typically involve single or multi-axis tightening, which may be accomplished for tightening a single or multiple bolts simultaneously to improve production efficiency. The existing common tightening device is designed for standard parts, and is specially customized for non-standard products. The arrow body normal temperature valve has a large amount of threaded connection parts, and at present, an operator manually pre-screws the arrow body normal temperature valve and then uses a handheld torque wrench to finish torque application, and the operator needs to overcome spring force during screwing, manually aligns threads and examines proficiency and strength of the operator. The full-automatic tightening device is easy to clamp and damage parts due to the influences of tightening torque, spring force, tightening precision, part overall dimensions and the like, the threads can be clamped due to tightening impact, and the semi-automatic tightening device can be used for the rocket body normal-temperature valve. In order to improve the assembly efficiency, the labor intensity is reduced, a thread auxiliary screwing tool needs to be designed urgently, the manual pre-screwing of the threads is replaced during assembly, and meanwhile, a torque wrench interface is reserved to facilitate torque application.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a pneumatic auxiliary tightening device for a one-way valve.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a device is screwed up in pneumatic assistance of check valve, includes the support, fixes pneumatic device on the support, presss from both sides tight piece, clamp hoop and rotation axis, the support is equipped with and presss from both sides tight piece spout, presss from both sides tight piece and locates in pressing from both sides tight piece spout, the rotation axis passes through rotation axis support and leg joint, rotation axis and clamp hoop connection, still be equipped with the hand wheel on the rotation axis support.

As a preferred mode, a torque wrench interface is reserved at the upper end of the hand wheel.

Preferably, the pneumatic device is connected with the air source and the pedal switch through an air pipe.

Preferably, the clamping block is in clearance fit with the one-way valve nipple.

As the preferred mode, the clamp includes upper portion, lower part, locating pin and extension spring, and upper portion and lower part pass through the locating pin and connect, and the extension spring is connected with the lower part, upper portion, lower part and one-way valve casing phase-match, upper portion, lower part dislocation distribution.

The support is the base member of whole tightening device, adopts the tripod structure more firm, connects pneumatic means, swivel axis support etc. on the support, fixes the support on the foundatin plate with the bolt during the use.

The bottom of the pneumatic device is connected with a low-pressure air pipe, the air pipe is simultaneously connected with an air source and a pedal switch, after ventilation is carried out, the pedal is stepped to control the pneumatic device to move up and down along a moving shaft, and a round button at the bottom of the pneumatic device is used for adjusting the moving speed of the gas pressure control device.

The clamping block is connected with a pneumatic device, synchronous action is guaranteed, and the clamping block moves up and down along the sliding groove of the clamping block during action. The clamping block is internally provided with a hexagonal structure and is in clearance fit with a hexagonal pipe connecting port of a one-way valve, the pipe connecting port is only required to be arranged in the clamping block when being screwed down, the pedal pneumatic device and the clamping block move upwards together, the assembled valve is taken down after the screwing down is finished, and the pedal pneumatic device and the empty clamping block are loosened to return to the initial position.

The clamp is composed of an upper part, a lower part, a positioning pin and a tension spring. The upper part and the lower part of the hoop are designed into an inner hexagonal structure and are matched with a one-way valve shell in a hexagonal mode, and the upper part and the lower part are connected through a positioning pin. The dislocation distribution is acquiescently acquiesced with the lower part hexagonal in upper portion hexagonal, and during the use, clamp upper portion is fixed, twists the clamp lower part, and casing subassembly is gone into to upper portion and lower part hexagonal coincidence, loosens behind the clamp lower part, and extension spring effect lower part hexagonal return blocks casing subassembly and prevents to drop. After the tightening is finished, the lower part of the hoop is screwed, and the upper part and the lower part are overlapped in a hexagonal mode, so that the valve can be taken out.

The rotation axis support is used for supporting rotation axis and hand wheel, and rotation axis position accuracy is higher, guarantees casing subassembly and filler neck axiality when screwing up, prevents that the screw thread card from dying.

The diameter of the hand wheel is large, labor is saved during screwing, knurling is arranged on the outer side of the hand wheel, the hand wheel is anti-skidding, a torque wrench interface is reserved at the upper end of the hand wheel, and torque is directly applied after the hand wheel is conveniently screwed.

The invention can adapt to other valve products by adjusting the size of the clamping block and the size of the clamping hoop.

The invention has the following advantages:

1. a pneumatic device is designed to replace a manual spring pressing action, and the pedal plate controls the clamping block to lift, so that the labor force is greatly saved, and the labor intensity is reduced;

2. clamp upper portion hexagonal and lower part hexagonal dislocation distribution prevent that the casing subassembly from screwing up the process and dropping, twist and move the clamp lower part, when upper portion and lower part hexagonal coincide, can easily take.

3. A torque wrench interface is reserved at the upper end of the hand wheel, so that torque can be applied conveniently, and the torque wrench can slowly apply torque to prevent screwing impact and thread jamming.

Drawings

Fig. 1 is a schematic structural view of a check valve in the embodiment.

Fig. 2 is a schematic structural diagram of the embodiment.

FIG. 3 is a diagram of an embodiment of a bracket.

FIG. 4 is a schematic diagram of a pneumatic apparatus according to an embodiment.

FIG. 5 is a diagram of a clamping block of an embodiment.

FIG. 6 is a view of the embodiment of the clamping block runner.

Fig. 7 is a view showing the structure of the clip according to the embodiment.

FIG. 8 is a view showing a structure of a rotary shaft according to the embodiment.

FIG. 9 is a view showing the structure of a rotary shaft support according to the embodiment.

FIG. 10 is a diagram of the construction of the hand wheel of the embodiment.

In the drawings: 1. the device comprises a support, 2, a pneumatic device, 3, a clamping block, 4, a clamping block sliding groove, 5, a hoop, 6, a rotating shaft, 7, a rotating shaft support, 8, a hand wheel, 9, a filler neck, 10, a spring, 11, a shell assembly, 12 and a torque wrench interface.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example (b):

as shown in figures 1-10, taking a check valve as an example, the check valve is formed by assembling a shell assembly, a spring and a filler neck, and the shell assembly and the filler neck are screwed tightly by overcoming the spring force during assembly.

A pneumatic auxiliary tightening device for a one-way valve comprises a support 1, a pneumatic device 2, a clamping block 3, a clamping block sliding groove 4, a hoop 5, a rotating shaft 6, a rotating shaft support 7 and a hand wheel 8; the bracket 1 is a base body of the whole device; the pneumatic device 2 is arranged on the left side of the bracket 1; the clamping block 3 is arranged at the lower right side and is connected with the pneumatic device 2 for synchronous movement; the filler neck 9 is arranged in the clamping block 3, the spring 10 is arranged in the filler neck 9, and the clamping block 3 moves up and down along the clamping block sliding groove 4; the rotating shaft bracket 7 is positioned on the upper side of the bracket 1 and used for supporting the hoop 5, the rotating shaft 6 and the hand wheel 8, and the rotating shaft 6, the hoop 5 and the clamping block 3 are coaxial; screwing the lower part of the hoop 5, and installing the hoop into the shell component 11, wherein the upper part and the lower part of the hoop 5 are staggered in a hexagonal mode to clamp the shell component 11; the torque wrench interface 12 is connected to a torque wrench.

The working process is as follows: the low-pressure air is connected into the one-way valve pneumatic auxiliary screwing device, the filler neck 9 is arranged in the clamping block 3, the filler neck 9 is in clearance fit with the clamping block 3, and the hexagonal surface of the filler neck 9 is prevented from being scratched by sliding during screwing; screwing the lower part of the hoop 5, installing the shell assembly 11 when the upper part of the hoop is overlapped with the hexagonal part of the lower part, loosening the lower part of the hoop 5, and restoring the hexagonal parts of the upper part and the lower part of the hoop to be in a staggered state under the action of the tension spring to clamp the shell assembly 11; treading a pedal to ventilate the pneumatic device 2, wherein the moving speed of the pneumatic device is adjustable, after ventilation, the pneumatic device 2 drives the clamping block 3, the pipe connecting pipe 9 and the spring 10 to synchronously and slowly move upwards, when the spring 10 contacts the shell assembly, the hand wheel 8 is screwed, the hand wheel drives the rotating shaft 6, the hoop 5 and the shell assembly 11 to rotate together, the external thread of the shell assembly 11 is slowly screwed into the internal thread of the pipe connecting pipe 9, a torque wrench is connected to a torque wrench interface 12 to complete torque application, the lower part of the hoop 5 is screwed, and the internal and external hexagons are overlapped and then the valve is taken out; after the threads are screwed, the pedal plate is loosened, the pneumatic device 2 and the clamping block 3 return to the initial position, and the screwing operation is finished.

The tightening device is simple and convenient to operate, the time for tightening a single piece is about 40s, which is equivalent to the time of a skilled operator, but the labor force is greatly saved, female operators and unskilled workers can easily and quickly operate, meanwhile, the automation and the specialization degree of the tightening device are improved through pneumatic control, and the operator has good feedback.

The invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed.

Claims

1. A pneumatic auxiliary tightening device is characterized in that: including support (1), fix pneumatic means (2), the tight piece of clamp (3), clamp (5) and rotation axis (6) on support (1), support (1) is equipped with and presss from both sides tight piece spout (4), presss from both sides tight piece (3) and locates in pressing from both sides tight piece spout (4), rotation axis (6) are connected with support (1) through rotation axis support (7), and rotation axis (6) are connected with clamp (5), still be equipped with hand wheel (8) on rotation axis support (7).

2. A pneumatically assisted tightening device according to claim 1, wherein: and a torque wrench interface (12) is reserved at the upper end of the hand wheel (8).

3. A pneumatically assisted tightening device according to claim 1, wherein: the pneumatic device (2) is connected with an air source and a pedal switch through an air pipe.

4. A pneumatically assisted tightening device according to claim 1, wherein: the clamping block (3) is in clearance fit with the one-way valve nozzle.

5. A pneumatically assisted tightening device according to claim 1, wherein: the clamp (5) comprises an upper portion, a lower portion, a positioning pin and a tension spring, wherein the upper portion and the lower portion are connected through the positioning pin, the tension spring is connected with the lower portion, the upper portion and the lower portion are matched with the one-way valve shell, and the upper portion and the lower portion are distributed in a staggered mode.