Fixed-torque bolt assembling device

Abstract

The utility model discloses a bolt fixed-torque assembling device, which relates to the technical field of bolt assembling and comprises a casing and a tool arranged at one end of the casing, and a power shaft, a dynamic torque sensor, a transmission component, a motor component, an air inlet component for inputting compressed air into the motor component and an electromagnetic valve are arranged in the casing. The dynamic torque sensor is arranged on the power shaft, and the transmission assembly is used for converting power of the power shaft into rotating force for driving the tool to rotate; the motor assembly is used for driving the power shaft to rotate, and the electromagnetic valve is used for controlling the air inflow of compressed air entering the air inlet assembly. According to the torque measured by the dynamic torque sensor, the electromagnetic valve timely controls the air inlet amount of compressed air entering the air inlet assembly, so that the power output amount of the motor assembly and the torque output by the power shaft are controlled, the force applied to the bolt is not too large, the rotating force applied to the bolt is stopped timely, and the bolt is prevented from being damaged. And the output torque can be adjusted in real time.

Description

Technical Field

[0001] The utility model relates to the technical field of bolt assembly, in particular to a bolt constant torque assembly device. Background Art

[0002] With the development of factory modernization, the original manual bolt tightening has been gradually upgraded to bolt tightening through bolt tightening devices.

[0003] The bolt tightening device in the prior art has a simple structure, and only drives a tool sleeved on the bolt head to rotate by a motor to achieve the purpose of tightening the bolt. The torque of the rotating tool is not adjustable, and the output torque accuracy is poor, which can easily cause damage to the bolt or the bolt installation position.

[0004] In view of this, a bolt torque-fixing assembly device is urgently needed. Summary of the invention

[0005] In view of the problems existing in the prior art, the utility model solves the problems with the following technical structure.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A bolt torque-fixing assembly device comprises: a housing and a tooling arranged at one end of the housing, wherein a power shaft, a dynamic torque sensor, a transmission assembly, a motor assembly, an air intake assembly for inputting compressed gas into the motor assembly, and a solenoid valve are arranged in the housing;

[0008] The dynamic torque sensor is arranged on the power shaft, and the transmission assembly is used to convert the power of the power shaft into a rotational force for driving the tooling to rotate;

[0009] The motor assembly is used to drive the power shaft to rotate, and the solenoid valve is used to control the intake amount of compressed gas entering the intake assembly.

[0010] Its further characteristic is that

[0011] The magnetic induction coil of the dynamic torque sensor is sleeved on the power shaft.

[0012] The transmission assembly includes a transmission shaft and an output shaft. One end of the transmission shaft is clamped with the power shaft, and the other end is provided with a first bevel gear. One end of the output shaft is provided with a second bevel gear. The tooling is installed at the other end of the output shaft, and the first bevel gear is meshed with the second bevel gear.

[0013] A gear assembly is arranged between the motor assembly and the power shaft.

[0014] The tooling is clamped with the output shaft.

[0015] A digital display control screen is arranged on the casing.

[0016] The housing is provided with a mounting slot, and a power supply battery is arranged in the mounting slot.

[0017] The outer side of the housing is provided with a plurality of anti-skid protrusions.

[0018] The housing consists of two identical half-shells.

[0019] The casing is made of plastic.

[0020] The above structure of the utility model can achieve the following beneficial effects:

[0021] According to the torque measured by the dynamic torque sensor, the solenoid valve controls the intake volume of compressed gas entering the intake assembly in time, thereby controlling the power output of the motor assembly and the torque output of the power shaft, so that the force applied to the bolt will not be too large, and the application of rotational force to the bolt is stopped in time, and the output torque can be adjusted in real time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of this embodiment;

[0023] Figure 2 It is a structural cross-sectional view of this embodiment.

[0024] In the figure: 1. power shaft; 2. dynamic torque sensor; 3. tooling; 4. motor assembly; 5. intake assembly; 6. transmission shaft; 61. first bevel gear; 7. output shaft; 71. second bevel gear; 8. digital display control screen; 9. power supply battery; 10. anti-slip bumps; 11. solenoid valve; 12. gear assembly. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0026] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, apparatus, product or equipment comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0027] The following is combined with Figure 1-2 This application is described in further detail.

[0028] refer to Figure 1-2 The bolt torque fixing assembly device shown in the figure comprises: a casing and a tool 3 arranged at one end of the casing, wherein a power shaft 1, a dynamic torque sensor 2, a transmission assembly, a motor assembly 4, an air intake assembly 5 for inputting compressed gas into the motor assembly 4, and an electromagnetic valve 11 are arranged in the casing; the dynamic torque sensor 2 is arranged on the power shaft 1, that is, the magnetic induction coil of the dynamic torque sensor 2 is sleeved on the power shaft 1, and the transmission assembly is used to convert the power of the power shaft 1 into a rotational force for driving the tool 3 to rotate; the motor assembly 4 is used to drive the power shaft 1 to rotate, and the electromagnetic valve 11 is used to control the intake amount of compressed gas entering the air intake assembly 5, so that when in use, the tool 3 is connected with the bolt, and the air intake assembly 11 is used to control the intake amount of compressed gas entering the air intake assembly 5. Component 5 (mainly composed of an air intake chamber) delivers compressed gas to the motor assembly 4, so that the motor of the motor assembly 4 rotates, and the power shaft 1 rotates. The transmission assembly transmits the rotational force of the power shaft 1 to the tooling 3, so that the tooling 3 rotates, and the bolts connected to the tooling 3 rotate. When the power shaft 1 is driven to rotate, the dynamic torque sensor 2 measures the torque output by the power shaft 1. According to the torque measured by the dynamic torque sensor 2, the solenoid valve 11 timely controls the intake amount of the compressed gas entering the air intake assembly 5, so as to control the power output of the motor assembly 4 and the torque output by the power shaft 1, so that the force applied to the bolt will not be too large, and the rotational force applied to the bolt is stopped in time, and the output torque can be adjusted in real time.

[0029] refer to Figure 2 As shown, the transmission assembly includes a transmission shaft 6 and an output shaft 7. One end of the transmission shaft 6 is clamped with the power shaft 1, and the other end is provided with a first bevel gear 61. One end of the output shaft 7 is provided with a second bevel gear 71. The tooling 3 is installed at the other end of the output shaft 7, and the first bevel gear 61 is meshed with the second bevel gear 71. In this way, the direction of the output force of the transmission shaft 6 is changed through the first bevel gear 61 and the second bevel gear 71, so that the housing and the tooling form an angle, which makes it easier to tighten the bolts in a relatively narrow space.

[0030] Further optimization is to refer to Figure 2 As shown, in order to reduce the speed of the rotational force output by the motor assembly 4 and increase the torque, a gear assembly 12 (reduction gear set) is provided between the motor assembly 4 and the power shaft 1 to output torque to the power shaft 1 more stably.

[0031] Further optimization is to refer to Figure 2 As shown, in order to facilitate the tightening of different bolts, the tooling 3 (the suspended end of the tooling 3 is provided with a limiting groove adapted to the bolt, and when in use, the bolt head is clamped in the limiting groove) is clamped with the output shaft 7, so that different models of tooling 3 can be easily replaced.

[0032] refer to Figure 2 As shown, a digital display control screen 8 is provided on the casing, and a mounting groove is provided on the casing, in which a power supply battery 9 is provided. In this way, the digital display control screen 8 and the dynamic torque sensor 2 are powered by the power supply battery 9, and the data detected by the dynamic torque sensor 2 is displayed in real time through the digital display control screen 8 and transmitted to the solenoid valve control system to complete the control of the solenoid valve 11.

[0033] Further optimization is that, in order to improve the user experience, a number of anti-slip bumps 10 are provided on the outer side of the casing to facilitate the user's holding and reduce the occurrence of slipping.

[0034] Further optimization is that, in order to facilitate assembly and maintenance, the casing is composed of two identical half shells, which is convenient for removing the casing and repairing and replacing internal components. In order to reduce production costs, the casing is preferably made of plastic as raw material, and the half shells are molded in one piece.

[0035] As a further optimization, the air intake assembly, the motor assembly, the power shaft 4, the gear assembly 12 and the transmission shaft 6 are arranged in a straight line, which is compact and convenient for hand-holding.

[0036] In summary, when in use, the tooling 3 is connected to the bolts, and compressed gas is delivered to the motor assembly 4 through the air intake assembly 5, so that the motor of the motor assembly 4 rotates, and the power shaft 1 rotates. The transmission assembly transmits the rotational force of the power shaft 1 to the tooling 3, so that the tooling 3 rotates, and the bolts connected to the tooling 3 rotate. When the power shaft 1 is driven to rotate, the dynamic torque sensor 2 measures the torque output of the power shaft 1. According to the torque measured by the dynamic torque sensor 2, the solenoid valve 11 promptly controls the intake amount of compressed gas entering the air intake assembly 5, thereby achieving the control of the power output of the motor assembly 4 and the torque output of the power shaft 1, so that the force applied to the bolt will not be too large, and the rotational force applied to the bolt is stopped in time, and the output torque can be adjusted in real time.

[0037] The above are only preferred embodiments of the present application, and the present invention is not limited to the above embodiments. It is understood that other improvements and changes directly derived or associated by those skilled in the art without departing from the spirit and concept of the present invention should be considered to be included in the protection scope of the present invention.

Claims

1. A bolt torque-fixing assembly device, characterized in that: include: A casing and a tooling (3) arranged at one end of the casing, wherein a power shaft (1), a dynamic torque sensor (2), a transmission assembly, a motor assembly (4), an air intake assembly (5) for inputting compressed gas into the motor assembly (4), and a solenoid valve (11) are arranged in the casing; The dynamic torque sensor (2) is arranged on the power shaft (1), and the transmission assembly is used to convert the power of the power shaft (1) into a rotational force for driving the tooling (3) to rotate; The motor assembly (4) is used to drive the power shaft (1) to rotate, and the solenoid valve (11) is used to control the intake amount of compressed gas entering the intake assembly (5).

2. A bolt torque fixing assembly device according to claim 1, characterized in that: The magnetic induction coil of the dynamic torque sensor (2) is sleeved on the power shaft (1).

3. A bolt torque fixing assembly device according to claim 1, characterized in that: The transmission assembly comprises a transmission shaft (6) and an output shaft (7); one end of the transmission shaft (6) is clamped with the power shaft (1), and the other end is provided with a first bevel gear (61); one end of the output shaft (7) is provided with a second bevel gear (71); the tooling (3) is mounted on the other end of the output shaft (7), and the first bevel gear (61) is meshed with the second bevel gear (71).

4. A bolt torque fixing assembly device according to claim 1, characterized in that: A gear assembly (12) is provided between the motor assembly (4) and the power shaft (1).

5. The bolt torque fixing assembly device according to claim 1, characterized in that: The tooling (3) is clamped with the output shaft (7).

6. A bolt torque-fixing assembly device according to claim 1, characterized in that: The housing is provided with a digital display control screen (8).

7. A bolt torque-fixing assembly device according to claim 6, characterized in that: The housing is provided with a mounting groove, and a power supply battery (9) is arranged in the mounting groove.

8. The bolt torque fixing assembly device according to claim 1, characterized in that: A plurality of anti-slip convex points (10) are arranged on the outer side of the casing.

9. The bolt torque fixing assembly device according to claim 1, characterized in that: The housing consists of two identical half-shells.

10. The bolt torque-fixing assembly device according to claim 1, characterized in that: The casing is made of plastic.

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