CN210099881U

CN210099881U - Precise pneumatic wrench

Info

Publication number: CN210099881U
Application number: CN201920827021.9U
Authority: CN
Inventors: 陈长军; 刘辰弟; 陈长勇
Original assignee: Beijing Sayes Technology Co Ltd
Current assignee: Xianyang Saiyasi Technology Co ltd
Priority date: 2019-06-03
Filing date: 2019-06-03
Publication date: 2020-02-21
Anticipated expiration: 2029-06-03

Abstract

The utility model belongs to the technical field of connect the fastening, a accurate pneumatic spanner is related to. The device comprises a pneumatic pump, a torque controller, a pneumatic torque wrench and a torque measurement feedback sleeve; the pneumatic pump is in pressure connection with the pneumatic torque wrench through the torque controller, the pneumatic torque wrench rotates the target fastener through a sleeved torque measurement feedback sleeve, the torque controller is in wireless connection with the torque measurement feedback sleeve, the torque measurement feedback sleeve collects real-time torque data and feeds back the real-time torque data in real time, and the torque controller controls the on-off of compressed gas between the pneumatic pump and the pneumatic torque wrench; the utility model carries out fastening operation by presetting the torque value of the target fastener, thus improving the precision and efficiency of the fastening operation; the utility model discloses it is easy and simple to handle, the accurate rapid of moment of torsion fastening operation.

Description

Precise pneumatic wrench

Technical Field

The utility model belongs to the technical field of connect the fastening, especially, relate to an accurate pneumatic spanner.

Background

The wrench is a common tool, the traditional wrench utilizes the lever principle to turn the bolt, the screw, the nut and other screw threads to tightly hold the opening or trepanning fastener tool of the bolt, through the development of the technology, the wrench tool has been developed to the electric torque form from the original manual lever principle, and is used as an index for checking the bolt installation process, the torque value directly influences the bolt installation process, and various automatic or semi-automatic torque wrenches are in the market at present. However, these wrenches are all applied to light bolt assembly on a workshop assembly line, and no applicable automatic wrench can be selected in outdoor operation places such as petrochemical industry, wind power, bridges, railways and the like which need heavy bolt assembly, and still more original operation tools are adopted. The traditional heavy bolt fastening process adopts a non-precise impact wrench or a hydraulic wrench, the error value of the impact wrench is up to more than 20%, and the error value of the hydraulic wrench is far higher than the nominal range due to the fact that the hydraulic wrench needs to adjust oil pressure manually and the introduction of human factors.

Unfortunately, due to the lack of reliable precision tightening tools, the quality of assembly cannot be guaranteed in some important projects, which results in serious safety accidents, such as several accidents causing significant losses in the current petrochemical industry. In practice, basic operators do not want to strictly follow the regulations due to the heavy and cumbersome existing tools, and the operation is carried out in a simple and rough manner, and a good method for monitoring and tracking is not available, so that the assembly quality is completely out of control.

The invention provides a technical scheme, which ensures high-precision screwing quality in the assembly process of a heavy bolt and is extremely simple and convenient to operate; compared with the existing tool, the solution has the advantages that the assembling quality and the working efficiency are greatly improved, data recording can be performed in operation engineering, and quality tracing is realized.

The invention fills the blank of the heavy-duty bolt tightening automatic high-precision intelligent torque wrench.

SUMMERY OF THE UTILITY MODEL

In order to fill this technical gap, the utility model provides an accurate pneumatic wrench has solved the problem that exists among the prior art.

The utility model provides a, an accurate pneumatic spanner, including pneumatic pump 1, torque controller 2, pneumatic torque wrench 3, torque measurement feedback sleeve 4, pneumatic pump 1 is through pneumatic torque wrench 3 of 2 pressure connections of torque controller, pneumatic torque wrench 3 is through cup jointing the rotatory target fastener of torque measurement feedback sleeve 4, torque controller 2 is through wireless connection with torque measurement feedback sleeve 4, torque measurement feedback sleeve 4 gathers real-time torque data and feeds back immediately, torque controller 2 controls the compressed gas's between pneumatic pump 1 and the pneumatic torque wrench 3 break-make.

Preferably, the torque controller 2 includes: a compressed gas delivery section: a compressed gas input interface 201, a filter 202, a pressure regulating valve 203, an electromagnetic valve 204, a compressed gas output interface 205, and a control part: control board 206, range switch 207, power supply part: controller battery 208, controller switch 209, controller interface 210 that charges, the communication part: a controller wireless communication module 211, a USB interface 212, a controller liquid crystal display 213, a buzzer 214 and an indicator light 215; compressed gas emitted by the pneumatic pump 1 enters the torque controller 2 through the compressed gas input interface 201, then sequentially passes through the filter 202, the pressure regulating valve 203 and the electromagnetic valve 204, and then is output to the pneumatic torque wrench 3 through the compressed gas output interface 205; the control board 206 is electrically connected with the gear switch 207, the controller storage battery 208, the controller power switch 209, the controller charging interface 210, the controller wireless communication module 211, the USB interface 212, the controller liquid crystal display 213, the buzzer 214, the indicator light 215 and the electromagnetic valve 204; the control board 206 controls the electromagnetic valve 204 to open and close to switch on and off the compressed gas between the pneumatic pump 1 and the pneumatic torque wrench 3.

Preferably, the position switch 207 is divided into three positions; the indicator light 215 indicates the current controller status by turning on or off: a red indicator light is on, and indicates that the controller is failed and is not qualified in screwing; a yellow indicator light is on to indicate that the screw is being tightened; a blue indicator light is on to indicate unloading; and a green indicator light is on, and the screwing is qualified.

Preferably, the torque measurement feedback sleeve 4 comprises: the torque acquisition device comprises a torque input end 41, a torque acquisition circuit 42, a torque output end 43, a sleeve storage battery 44, a sleeve power switch 45, a sleeve charging interface 46, a sleeve wireless communication module 47 and a sleeve liquid crystal display 48.

Preferably, the torque measurement feedback sleeve 4 is a multi-type torque sleeve to adapt to bolt tightening occasions with different specifications.

Preferably, the sleeve lcd 48 is a touch-enabled lcd with a resolution of 240 × 160, and the sleeve lcd 48 displays information including: torque data, bolt specifications, tightening parameters.

Preferably, the controller storage battery 208 is a high-capacity ternary lithium battery with a full-power voltage of 29.4V and a capacity of 10 Ah; the control board card adopts a military-level printed circuit board and a 32-bit industrial-level CPU, and the operation speed is 120 MHz.

Preferably, the controller wireless communication module 211 adopts a 2.4GHz international universal ISM band, supports 126 channels, and has adjustable transmission power and coverage distance, and the transmission distance is up to 100 meters at the maximum.

Preferably, the solenoid valve 204 is a normally closed solenoid valve.

Preferably, the compressed gas input interface 201 is a standard 1/2 inch pipe thread quick coupling, and the compressed gas output interface 205 is a standard 1/2 inch pipe thread quick coupling.

The utility model has the advantages that:

1. the utility model provides a precise pneumatic wrench, a user sets a target torque before using, only the pneumatic torque wrench needs to be started during use, when the torque of a target fastener reaches a set value, a torque controller automatically cuts off compressed gas power, the fastening operation is stopped, and intellectualization and automation are achieved; torque wrench in the past all measures at the distal end, and middle process multichannel link, the error is great, the utility model discloses the first-time of opening fastener near-end torque measurement's precedent, stopped the possibility of fastening secondary error in the measurement process.

2. The utility model has high torque accuracy, adopts a 0.3% precision torque sensor, has high sampling rate and rapid response, automatically records the maximum torque in the tightening process, and has high recording result precision; the conventional common pneumatic torque wrench controls the final tightening torque by adjusting the pressure flow of the pneumatic pump, and the pressure gauge is pointer-type, so that the indicating precision is low and the reading is inaccurate.

3. The utility model discloses convenient to use need not frequent adjustment pneumatic pump output pressure size, predetermines the parameter according to the sleeve, and the moment of torsion reaches numerical value automatic cutout compressed gas power. However, the connecting pipe between the conventional pneumatic torque wrench and the pneumatic pump generates pressure loss, which reduces the pressure and affects the torque accuracy.

4. The invention adopts multiple closed-loop control, wherein the core control adopts torque high real-time measurement data directly from a bolt end; compared with the traditional tool adopting oil pressure or air pressure to carry out open-loop control, the high tightening density and the high reliability of screwing are really ensured.

5. The utility model discloses it is low to user's requirement threshold, only need simple training can the shang shou, safe and reliable, and guaranteed that the fastening precision can not be influenced because of user's work experience and proficiency.

6. The utility model discloses it can instant storage to screw up data, can be according to the time node at any time when needs, according to the project classification transfer, look over, analysis, conveniently promote quality control.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of a precision pneumatic wrench;

FIG. 2 is a schematic external view of the torque controller;

FIG. 3 is a schematic diagram of the internal structure of the torque controller;

FIG. 4 is a schematic structural view of a torque measurement feedback sleeve;

FIG. 5 is a schematic diagram of a control board logic interface;

in the figure, a pneumatic pump-1, a torque controller-2, a pneumatic torque wrench-3 and a torque measurement feedback sleeve-4 are arranged; the device comprises a compressed gas input interface-201, a filter-202, a pressure regulating valve-203, an electromagnetic valve-204, a compressed gas output interface-205, a control board card-206, a gear switch-207, a controller storage battery-208, a controller power switch-209, a controller charging interface-210, a controller wireless communication module-211, a USB interface-212, a controller liquid crystal display screen-213, a buzzer-214 and an indicator light-215; the device comprises a torque input end-41, a torque acquisition circuit-42, a torque output end-43, a sleeve storage battery-44, a sleeve power switch-45, a sleeve charging interface-46, a sleeve wireless communication module-47 and a sleeve liquid crystal display-48.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, a precision pneumatic wrench, including pneumatic pump 1, torque controller 2, pneumatic torque wrench 3, torque measurement feedback sleeve 4, pneumatic pump 1 passes through pneumatic torque wrench 3 of 2 pressure connections of torque controller, pneumatic torque wrench 3 is through cup jointing the rotatory target fastener of torque measurement feedback sleeve 4, torque controller 2 and torque measurement feedback sleeve 4 are through wireless connection, torque measurement feedback sleeve 4 gathers real-time torque data and instant feedback, torque controller 2 controls the break-make of the compressed gas between pneumatic pump 1 and the pneumatic torque wrench 3.

Further, the torque controller 2 includes: a compressed gas delivery section: a compressed gas input interface 201, a filter 202, a pressure regulating valve 203, an electromagnetic valve 204, a compressed gas output interface 205, and a control part: control board 206, range switch 207, power supply part: controller battery 208, controller switch 209, controller interface 210 that charges, the communication part: a controller wireless communication module 211, a USB interface 212, a controller liquid crystal display 213, a buzzer 214 and an indicator light 215; compressed gas emitted by the pneumatic pump 1 enters the torque controller 2 through the compressed gas input interface 201, then sequentially passes through the filter 202, the pressure regulating valve 203 and the electromagnetic valve 204, and then is output to the pneumatic torque wrench 3 through the compressed gas output interface 205; the control board 206 is electrically connected with the gear switch 207, the controller storage battery 208, the controller power switch 209, the controller charging interface 210, the controller wireless communication module 211, the USB interface 212, the controller liquid crystal display 213, the buzzer 214, the indicator light 215 and the electromagnetic valve 204; the control board 206 controls the electromagnetic valve 204 to open and close to switch on and off the compressed gas between the pneumatic pump 1 and the pneumatic torque wrench 3.

Further, the range switch 207 is divided into three ranges; the indicator light 215 indicates the current controller status by turning on or off: a red indicator light is on, and indicates that the controller is failed and is not qualified in screwing; a yellow indicator light is on to indicate that the screw is being tightened; a blue indicator light is on to indicate unloading; and a green indicator light is on, and the screwing is qualified.

Further, the torque measurement feedback sleeve 4 comprises: the torque acquisition device comprises a torque input end 41, a torque acquisition circuit 42, a torque output end 43, a sleeve storage battery 44, a sleeve power switch 45, a sleeve charging interface 46, a sleeve wireless communication module 47 and a sleeve liquid crystal display 48.

Furthermore, the torque measurement feedback sleeve 4 is a multi-type torque sleeve to adapt to bolt tightening occasions with different specifications.

Further, the sleeve lcd 48 is a touch-enabled lcd with a resolution of 240 × 160, and the sleeve lcd 48 displays information including: torque data, bolt specifications, tightening parameters.

Further, the controller storage battery 208 is a high-capacity ternary lithium battery with a full-charge voltage of 29.4V and a capacity of 10 Ah; the control board card adopts a military-level printed circuit board and a 32-bit industrial-level CPU, and the operation speed is 120 MHz.

Further, the controller wireless communication module 211 supports 126 channels by using a 2.4GHz international universal ISM band, the transmission power and the coverage distance are adjustable, and the transmission distance is up to 100 meters at the maximum.

Further, the solenoid valve 204 is a normally closed solenoid valve.

Further, the compressed gas input interface 201 is a standard 1/2-inch pipe thread quick coupling, and the compressed gas output interface 205 is a standard 1/2-inch pipe thread quick coupling. .

Example (b):

preparation work: the output port of the pneumatic pump is connected with the compressed gas input interface of the torque controller, the compressed gas output interface of the torque controller is connected with the compressed gas input port of the pneumatic torque wrench, and the two ends of the pneumatic torque wrench are both standard 1/2-inch pipe thread quick connectors, so that the connection is simple and quick. Selecting a corresponding torque sleeve according to the specification of a target fastener to be installed in a chuck of the pneumatic torque wrench, then turning on a power supply of the torque measurement feedback sleeve, simultaneously turning on a power supply of a torque controller, checking state information of a display screen and an input pressure value, and ensuring that the input pressure value is normal, the power supply of the torque controller is normal, the communication state of the torque measurement feedback sleeve is normal, an indicator lamp flickers normally and no other abnormal alarm exists; because the electromagnetic valve is a normally closed electromagnetic valve, the electromagnetic valve is opened after power is applied, at the moment, compressed gas is sent out by the pneumatic pump, enters the torque controller through the compressed gas input interface, sequentially passes through the filter, the pressure regulating valve and the electromagnetic valve, and is finally output to the pneumatic torque wrench through the compressed gas output interface, the preparation work is finished, and bolt tightening operation can be carried out.

And (3) bolt tightening: setting a target fastening torque value on a display screen, adjusting a pneumatic torque wrench direction selection switch to a tightening operation direction position, holding the machine, sleeving a target fastening piece with a torque measurement feedback sleeve, and pressing down a pneumatic torque wrench switch; compressed gas reaches the pneumatic torque wrench, the working end of the pneumatic torque wrench starts to rotate, and the target fastener is driven by the torque measurement feedback sleeve; when the target fastener is stressed to rotate, the torque measurement feedback sleeve continuously measures the torque value and immediately feeds the measured torque value back to the torque controller, when the measured torque is not less than the target torque, the torque measurement feedback sleeve signals the torque controller, the torque controller disconnects the power supply of the electromagnetic valve, the electromagnetic valve returns to a normally closed state, the compressed gas power is cut off, the pneumatic torque wrench stops rotating, the torque measurement feedback sleeve stops conveying the torque, and the fastening operation is completed. When the buzzer is heard to give out a sound of 'tic', the screwing-up is prompted to be completed. If the tightening is unqualified, the buzzer can give out long sound again, and if the tightening is qualified, the buzzer does not give out sound. After the fastening operation is completed, the maximum torque, the bolt specification and the fastening parameter in the fastening process are displayed by the sleeve liquid crystal display and are wirelessly transmitted to the torque controller, the maximum torque, the bolt specification, the fastening parameter and the controller state are recorded in the memory by the torque controller, and a user can copy data through the USB interface to perform data analysis, recording, storage and filing.

Bolt force unloading: the direction selection switch of the pneumatic torque wrench is adjusted to a reverse gear, the trigger of the wrench is pressed again, the pneumatic torque wrench starts to rotate reversely, and after the torque is unloaded, the controller cuts off the power of compressed gas and stops rotating.

To sum up, the utility model relates to an accurate pneumatic wrench, it is intelligent, automatic, first open fastener near-end torque measurement's precedent, stopped the possibility of moment of torsion fastening secondary error in the measurement process, simple to use, safe and reliable requires the threshold low to the operation, can not receive the influence because of user's experience and proficiency, and the moment of torsion data is stored immediately after the fastening, can transfer, look over, the analysis according to the project classification according to the time node at any time when needing, makes things convenient for quality management, the utility model discloses simple structure, convenient operation, the installation is swift, has effectively overcome all kinds of shortcomings among the prior art and has good application prospect.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.

Claims

1. The utility model provides a precision pneumatic wrench, characterized in that, includes pneumatic pump (1), torque controller (2), pneumatic torque wrench (3), torque measurement feedback sleeve (4), pneumatic pump (1) passes through torque controller (2) pressure connection pneumatic torque wrench (3), and pneumatic torque wrench (3) are through cup jointing the rotatory target fastener of torque measurement feedback sleeve (4), torque controller (2) and torque measurement feedback sleeve (4) are through wireless connection, real-time torque data and instant feedback are gathered to torque measurement feedback sleeve (4), torque controller (2) control pneumatic pump (1) and the break-make of the compressed gas between pneumatic torque wrench (3).

2. A precision pneumatic wrench as claimed in claim 1, characterised in that said torque controller (2) comprises: a compressed gas delivery section: a compressed gas input interface (201), a filter (202), a pressure regulating valve (203), an electromagnetic valve (204), a compressed gas output interface (205), and a control section: control integrated circuit board (206), gear switch (207), the power supply part: controller battery (208), controller switch (209), controller interface (210) that charges, the communication part: the device comprises a controller wireless communication module (211), a USB interface (212), a controller liquid crystal display screen (213), a buzzer (214) and an indicator light (215);

compressed gas emitted by the pneumatic pump (1) enters the torque controller (2) through a compressed gas input interface (201), then sequentially passes through the filter (202), the pressure regulating valve (203) and the electromagnetic valve (204), and then is output to the pneumatic torque wrench (3) through a compressed gas output interface (205);

the control board card (206) is in circuit connection with a gear switch (207), a controller storage battery (208), a controller power switch (209), a controller charging interface (210), a controller wireless communication module (211), a USB interface (212), a controller liquid crystal display (213), a buzzer (214), an indicator lamp (215) and an electromagnetic valve (204); the control board card (206) controls the electromagnetic valve (204) to open and close so as to switch on and off compressed gas between the pneumatic pump (1) and the pneumatic torque wrench (3).

3. A precision pneumatic wrench as claimed in claim 2, wherein said range switch (207) is divided into three steps; the indicator light (215) indicates the current controller state by turning on and off: a red indicator light is on, and indicates that the controller is failed and is not qualified in screwing; a yellow indicator light is on to indicate that the screw is being tightened; a blue indicator light is on to indicate unloading; and a green indicator light is on, and the screwing is qualified.

4. A precision pneumatic wrench as claimed in claim 1, characterised in that the torque measurement feedback sleeve (4) comprises: the torque monitoring device comprises a torque input end (41), a torque acquisition circuit (42), a torque output end (43), a sleeve storage battery (44), a sleeve power switch (45), a sleeve charging interface (46), a sleeve wireless communication module (47) and a sleeve liquid crystal display (48).

5. A precision pneumatic wrench as claimed in any one of claims 1 to 4, characterised in that the torque measurement feedback sleeve (4) is a multi-type torque sleeve to accommodate different sizes of bolt tightening applications.

6. The precision air wrench as claimed in claim 4, wherein the sleeve lcd (48) is a touch-enabled lcd screen with a resolution of 240X160, and the sleeve lcd (48) displays information including: torque data, bolt specifications, tightening parameters.

7. The precision pneumatic wrench as claimed in claim 2, wherein the controller battery (208) is a high capacity ternary lithium battery with a full voltage of 29.4V and a capacity of 10 Ah; the control board card adopts a military-level printed circuit board and a 32-bit industrial-level CPU, and the operation speed is 120 MHz.

8. The precise pneumatic wrench as claimed in claim 2, wherein the controller wireless communication module (211) supports 126 channels in the 2.4GHz international universal ISM band, the transmission power and the coverage distance are adjustable, and the transmission distance is up to 100 meters at the maximum.

9. A precision pneumatic wrench as claimed in claim 2, characterised in that the solenoid valve (204) is a normally closed solenoid valve.

10. A precision pneumatic wrench as claimed in claim 2, characterised in that the compressed gas input interface (201) is a standard 1/2 inch pipe thread quick coupling and the compressed gas output interface (205) is a standard 1/2 inch pipe thread quick coupling.