CN107971559B - An all-electric clamping device with high power-to-weight ratio - Google Patents

Abstract

The invention discloses a high power-to-weight ratio full-electric clamping device which comprises shearing pliers, a shell, a first shell, a hand wheel, a display screen, a second shell, a motor, a power line, a sensor, an output rod, a locknut, a coupler, a motor output shaft, a rotating speed regulator, a battery, a bearing, a screw pair and an adapter, wherein the shell is arranged on the shell; the cutting nippers, the shell, the first shell, the hand wheel, the second shell and the motor are sequentially connected, and a power line, a rotating speed regulator and a battery are installed on the motor; the output shaft of the motor is connected with the screw pair through a coupler, the screw pair is fixedly connected with the output rod, and the output rod is provided with an adapter and a sensor and a display screen. According to the invention, through the matching of the shearing pliers, the shell, the first shell, the hand wheel, the display screen, the second shell, the motor, the power line, the sensor, the output rod, the locknut, the coupler, the motor output shaft, the rotating speed regulator, the battery, the bearing, the screw pair and the adapter, the power-weight ratio and the bearing capacity of the full electric clamping device are improved, and the defects of the traditional hydraulic shearing device are overcome.

Description

An all-electric clamping device with high power-to-weight ratio

technical field

The invention relates to an all-electric clamping device with a high power-to-weight ratio, which is especially suitable for fire-fighting demolition and disaster rescue, and belongs to the technical field of mechanical shearing and clamping devices.

Background technique

In many engineering fields, there is a lot of work that needs to crimp and cut metal materials, but because metal materials are very hard, it is not easy to be crimped and cut, and many crimping pliers are mostly mechanical, and the pressing force is relatively Small, it will encounter many difficulties in the process of completing this kind of work, and it is inconvenient to operate. With the application of hydraulic technology in various fields, people apply hydraulic technology to portable hydraulic tongs to achieve hydraulic force enhancement, and the effect is obvious. Using the oil under pressure as the working medium to transmit power, convert the mechanical energy into the pressure energy of the oil, and then convert the pressure energy of the oil into mechanical energy, so as to realize the simple and labor-saving operation to complete the crimping and cutting of the material wait for work.

With the development of equipment level and the proposal of "Made in China 2025" plan, the weight requirements of fire fighting equipment are becoming more and more stringent, which in turn puts forward higher requirements for the power-to-weight ratio and efficiency indicators of fire tongs.

In the prior art, fire tongs usually use rechargeable hydraulic tongs, which are the most portable rechargeable hydraulic tools at present. They can be operated with one hand and are used for crimping terminals in power distribution operations. They have high durability and reach the set pressure. Automatic pressure relief, mechanical hydraulic head to ensure the quality of crimping. However, there are problems such as large overall weight, small power-to-weight ratio, low efficiency, and oil leakage in the hydraulic system, and it is not easy to analyze the failures that occur. It cannot meet the requirements of high power-to-weight ratio, strong bearing capacity, high reliability and portability of modern fire fighting equipment.

SUMMARY OF THE INVENTION

The technical problem solved by the present invention is: overcoming the deficiencies of the prior art, the present invention provides an all-electric clamping device with a high power-to-weight ratio. The cooperation of housing, motor, power cord, sensor, output rod, lock nut, coupling, motor output shaft, speed regulator, battery, bearing, screw pair and adapter improves the all-electric clamping device The high power-to-weight ratio enhances the bearing capacity of the all-electric clamping device and makes up for the defects of the traditional hydraulic shearing device.

The technical solution of the present invention is:

An all-electric clamping device with a high power-to-weight ratio, comprising cutting pliers, a casing, a first casing, a hand wheel, a display screen, a second casing, a motor, a power cord, a sensor, an output rod, a locking nut, and a coupling controller, motor output shaft, speed regulator, battery, bearing, screw pair and adapter;

A casing for limit protection is installed on the cutting pliers, the casing, the first casing, the handwheel, the second casing, and the motor are connected in sequence, and the motor is respectively installed with a power cord, a speed regulator and a battery;

There is a motor output shaft in the motor. The motor output shaft is connected with the lead screw pair through a coupling and is equipped with a bearing and an anti-loosening nut. The lead screw pair is also fixedly connected with one end of the output rod, and the other end of the output rod is provided with a drive for cutting pliers. The adapter is installed with a sensor, and the sensor is connected with the display screen for feedback force signal.

In the above-mentioned all-electric clamping device with high power-to-weight ratio, the shell adopts a hollow block structure, the cross-sectional shape of the shell is set to a fan shape, the fan-shaped opening angle is not greater than 152°, and the material of the shell adopts polyester fiber composite material .

In the above-mentioned high power-to-weight ratio all-electric clamping device, the first shell adopts a hollow cylindrical structure, the first shell is axially provided with a stepped hole for installing the sensor and the adapter, and the first shell is axially provided with a stepped hole for installing the sensor and the adapter. The material of the body adopts polyester fiber composite material.

In the above-mentioned all-electric clamping device with a high power-to-weight ratio, the handwheel is used to adjust the direction of the cutting pliers, and the material of the handwheel is rubber.

In the above-mentioned all-electric clamping device with high power-to-weight ratio, the second casing adopts a hollow cylindrical structure, and the second casing is axially provided with stepped holes for installing the screw pair, the bearing and the locking nut. , the material of the second shell adopts aluminum alloy.

In the above-mentioned high power-to-weight ratio all-electric clamping device, the output rod is a solid round straight rod, the diameter of the output rod is set to Φ40-50mm, the length of the output rod is set to 200-300mm, and the output rod is set to 200-300mm. The material is 45# stainless steel.

In the above-mentioned all-electric clamping device with high power-to-weight ratio, the speed regulator adopts a potentiometer and is equipped with a travel switch to adjust the speed of the motor.

In the above-mentioned high power-to-weight ratio all-electric clamping device, the bearing adopts an angular contact ball bearing.

In the above-mentioned high power-to-weight ratio all-electric clamping device, the lead screw pair adopts a planetary roller screw pair, including a roller screw and a lead screw nut, the roller screw is engaged with the lead screw nut, and the screw The lever nut is screwed with the output rod.

In the above-mentioned high power-to-weight ratio all-electric clamping device, the adapter adopts a ball joint bearing or a cylindrical key.

The beneficial effects of the present invention compared with the prior art are:

[1] The present invention uses the all-electric system to replace the hydraulic system to drive the clamping device, which greatly reduces the volume and weight of the fire tongs and improves the power-to-weight ratio; It is fed back to the display screen in real time, and the user can adjust the motor speed through the speed regulator according to the value on the display screen, which is safe and efficient; and the invention uses a dual-purpose motor. If there is no power supply, the mobile battery at the bottom of the motor housing can be used for power supply, which improves the versatility of the product.

[2] The present invention adopts the planetary roller screw pair as the main transmission component, and the planetary roller screw pair is in contact with the screw thread in the nut during the transmission process. Therefore, under the condition of the same size, the planetary roller screw pair will The bearing capacity of the column screw is much greater than that of the ordinary ball screw, which significantly improves the power-to-weight ratio of the device and reduces the probability of the screw getting stuck during movement.

[3] The present invention has a compact overall structure, is suitable for various working environments, has a relatively long service life, can still operate well under complex working conditions, has the characteristics of a wide range of applications, and has a good market application prospect.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the present application. The embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:

Fig. 1 is the schematic diagram of the present invention

Figure 2 is a sectional view of the present invention

Among them: 1 cutter; 2 shell; 3 first shell; 4 hand wheel; 5 display screen; 6 second shell; 7 motor; 8 power cord; 9 sensor; 10 output rod; 11 lock nut; 12 joint Shaft; 13 motor output shaft; 14 speed regulator; 15 battery; 16 bearing; 17 lead screw pair; 18 adapter; 171 roller screw; 172 lead screw nut;

Detailed ways

In order to make the solution of the present invention clearer, the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

As shown in Figures 1-2, an all-electric clamping device with high power-to-weight ratio includes cutting pliers 1, a casing 2, a first casing 3, a handwheel 4, a display screen 5, a second casing 6, and a motor 7 , power cord 8, sensor 9, output rod 10, lock nut 11, coupling 12, motor output shaft 13, speed regulator 14, battery 15, bearing 16, screw pair 17 and adapter 18;

A casing 2 for limit protection is installed on the cutting pliers 1. The casing 2, the first casing 3, the handwheel 4, the second casing 6 and the motor 7 are connected in sequence. device 14 and battery 15;

The motor 7 is provided with a motor output shaft 13. The motor output shaft 13 is connected with the lead screw pair 17 through a coupling 12 and is equipped with a bearing 16 and a locking nut 11. The lead screw pair 17 is also fixedly connected to one end of the output rod 10. The other end of the rod 10 is provided with an adaptor 18 for driving the cutting forceps 1 and a sensor 9 is installed, and the sensor 9 is communicated with the display screen 5 for feeding back force signals.

Preferably, the shell 2 adopts a hollow block structure, the cross-sectional shape of the shell 2 is fan-shaped, the fan-shaped opening angle is not greater than 152°, and the material of the shell 2 is a polyester fiber composite material.

Preferably, the first casing 3 adopts a hollow cylindrical structure, the first casing 3 is axially provided with stepped holes for installing the sensor 9 and the adapter 18 , and the material of the first casing 3 adopts a polyester fiber composite material.

Preferably, the hand wheel 4 is used to adjust the direction of the cutting forceps 1, and the material of the hand wheel 4 is rubber.

Preferably, the second housing 6 adopts a hollow cylindrical structure, and the second housing 6 is axially provided with stepped holes for installing the screw pair 17, the bearing 16 and the locking nut 11, and the material of the second housing 6 is aluminum. alloy.

Preferably, the output rod 10 is a solid round straight rod, the diameter range of the output rod 10 is set to Φ40-50mm, the length of the output rod 10 is set to 200-300mm, and the material of the output rod 10 is 45# stainless steel.

Preferably, the speed regulator 14 is equipped with a potentiometer and a limit switch for adjusting the speed of the motor 7 .

Preferably, the bearing 16 adopts an angular contact ball bearing.

Preferably, the lead screw pair 17 adopts a planetary roller screw pair, including a roller screw 171 and a lead screw nut 172 , the roller screw 171 is engaged with the lead screw nut 172 , and the lead screw nut 172 is screwed with the output rod 10 .

Preferably, the adapter 18 adopts a ball joint bearing or a cylindrical key.

The working principle of the present invention is:

When the all-electric clamping device needs to work, the operator holds the handwheel 4 and the speed regulator 14 with both hands, and turns on the motor 7. The motor output shaft 13 drives the roller screw 171 to rotate through the coupling 12, and the roller screw 171 The torque converted by the screw nut 172 is transferred to the output rod 10 and pushes the output rod 10 to move in a straight line. The output rod 10 drives the adapter 18 to move, which can drive the cutting pliers 1 to do work, and the sensor 9 will clamp the clamping device. The force condition is fed back to the display screen 5 in real time, so that the operator can adjust the speed of the motor 7 through the speed regulator 14 according to the value on the display screen 5 .

Contents that are not described in detail in the specification of the present invention are well known to those skilled in the art.

Claims (6)

1. The utility model provides a high power-to-weight ratio full electric clamping device which characterized in that: the electric cutting pliers comprise cutting pliers (1), a shell (2), a first shell (3), a hand wheel (4), a display screen (5), a second shell (6), a motor (7), a power line (8), a sensor (9), an output rod (10), a locknut (11), a coupler (12), a motor output shaft (13), a rotating speed regulator (14), a battery (15), a bearing (16), a screw pair (17) and an adapter (18);

the cutting nippers (1) are provided with a shell (2) for limiting protection, the shell (2), a first shell (3), a hand wheel (4), a second shell (6) and a motor (7) are sequentially connected, and the motor (7) is respectively provided with a power line (8), a rotating speed regulator (14) and a battery (15);

a motor output shaft (13) is arranged in the motor (7), the motor output shaft (13) is connected with a lead screw pair (17) through a coupler (12) and is provided with a bearing (16) and a locknut (11), the lead screw pair (17) is also fixedly connected with one end of an output rod (10), the other end of the output rod (10) is provided with an adapter (18) for driving the shearing pliers (1) and is provided with a sensor (9), and the sensor (9) is communicated with the display screen (5) and is used for feeding back a force signal;

the second shell (6) is of a hollow cylinder structure, the second shell (6) is axially provided with a stepped hole for mounting a screw pair (17), a bearing (16) and a locknut (11), and the second shell (6) is made of aluminum alloy;

the screw pair (17) adopts a planetary roller screw pair and comprises a roller screw (171) and a screw nut (172), the roller screw (171) is meshed with the screw nut (172), and the screw nut (172) is in threaded connection with the output rod (10);

the shell (2) is of a hollow block structure, the cross section of the shell (2) is of a fan shape, the fan-shaped opening angle is not larger than 152 degrees, and the shell (2) is made of a polyester fiber composite material;

the first shell (3) is of a hollow cylinder structure, step holes for mounting the sensor (9) and the adapter (18) are axially formed in the first shell (3), and the first shell (3) is made of polyester fiber composite materials.

2. A high power-to-weight ratio all-electric clamping device according to claim 1, wherein: the hand wheel (4) is used for adjusting the orientation of the cutting nippers (1), and the hand wheel (4) is made of rubber.

3. A high power-to-weight ratio all-electric clamping device according to claim 1, wherein: the output rod (10) is a solid round straight rod, the diameter range of the output rod (10) is set to be phi 40-50 mm, the length range of the output rod (10) is set to be 200-300 mm, and the output rod (10) is made of 45# stainless steel.

4. A high power-to-weight ratio all-electric clamping device according to claim 1, wherein: the rotating speed regulator (14) adopts a potentiometer equipped with a travel switch and is used for regulating the rotating speed of the motor (7).

5. A high power-to-weight ratio all-electric clamping device according to claim 1, wherein: the bearing (16) adopts an angular contact ball bearing.

6. A high power-to-weight ratio all-electric clamping device according to claim 1, wherein: the adapter (18) adopts a ball-and-socket joint bearing or a cylindrical key.

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