CN107971559B - High-power-to-weight ratio full-electric clamping device - Google Patents

High-power-to-weight ratio full-electric clamping device Download PDF

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Publication number
CN107971559B
CN107971559B CN201711139961.0A CN201711139961A CN107971559B CN 107971559 B CN107971559 B CN 107971559B CN 201711139961 A CN201711139961 A CN 201711139961A CN 107971559 B CN107971559 B CN 107971559B
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China
Prior art keywords
shell
motor
weight ratio
clamping device
output rod
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CN201711139961.0A
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CN107971559A (en
Inventor
王德义
李德强
郑世成
韩旭
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China Academy of Launch Vehicle Technology CALT
Beijing Aerospace Automatic Control Research Institute
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China Academy of Launch Vehicle Technology CALT
Beijing Aerospace Automatic Control Research Institute
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23DPLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D29/00Hand-held metal-shearing or metal-cutting devices
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/0028Force sensors associated with force applying means

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

High-power-to-weight ratio full-electric clamping device
Technical Field
The invention relates to a high power-weight ratio full-electric clamping device, which is particularly suitable for fire control forcible entry and disaster rescue and belongs to the technical field of mechanical shearing clamping devices.
Background
In many engineering fields, a lot of work needs to be carried out on metal materials for crimping and cutting, but the metal materials are hard and are not easy to crimp and cut, and most of the compression pliers are mechanical, the compression force is relatively small, so that the process of completing the work is difficult and inconvenient to operate. As the application of the hydraulic technology is spread in various fields, people apply the hydraulic technology to the portable hydraulic pliers to realize hydraulic force increasing, and the effect is obvious. The oil with pressure is used as a working medium for transmitting power, mechanical energy is converted into pressure energy of the oil, and then the pressure energy of the oil is converted into the mechanical energy, so that the pressing connection, cutting and other work of materials are completed by simple and labor-saving operation.
With the development of equipment level and the proposal of 'Chinese manufacturing 2025', the weight requirement of fire fighting equipment is more and more strict, and further higher requirements are put forward on the power-weight ratio and efficiency indexes of the fire fighting tongs.
In the prior art, the fire-fighting tongs are usually used as charging hydraulic tongs, are the most portable charging hydraulic tools at present, can be operated by one hand, are applied to the crimping of a power distribution operation terminal, have high durability, automatically release pressure when reaching a set pressure, and ensure the quality of the crimping by a mechanical hydraulic head. But the problems of large total weight, small power-weight ratio, low efficiency, oil leakage of a hydraulic system and the like exist, and the faults are difficult to analyze. The requirements of high power-weight ratio, strong bearing capacity, high reliability and portability of modern fire-fighting equipment cannot be met.
Disclosure of Invention
The technical problem solved by the invention is as follows: the invention overcomes the defects of the prior art, and provides a high power-to-weight ratio all-electric clamping device.
The technical solution of the invention is as follows:
a high power-to-weight ratio full-electric clamping device comprises a pair of 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;
the cutting nippers are provided with a shell for limiting protection, the shell, the first shell, the hand wheel, the second shell and the motor are sequentially connected, and the motor is respectively provided with a power line, a rotating speed regulator and a battery;
be equipped with the motor output shaft in the motor, motor output shaft passes through the coupling joint with the lead screw pair and joins in marriage dress bearing and lock nut, the lead screw pair still with output rod one end fixed connection, the output rod other end is equipped with the adapter that is used for driving the cutting nipper and installs the sensor, sensor and display screen intercommunication for feedback force signal.
In the above all-electric clamping device with high power-weight ratio, the housing is of a hollow block structure, the cross section of the housing is in a fan shape, the fan-shaped opening angle is not more than 152 degrees, and the housing is made of a polyester fiber composite material.
In the above all-electric clamping device with a high power-to-weight ratio, the first housing is of a hollow cylindrical structure, the first housing is axially provided with a step hole for mounting the sensor and the adapter, and the first housing is made of a polyester fiber composite material.
In the above full-electric clamping device with high power-weight ratio, the hand wheel is used for adjusting the orientation of the cutting nippers, and the hand wheel is made of rubber.
In the above full electric clamping device with high power-to-weight ratio, the second housing is of a hollow cylindrical structure, a stepped hole for mounting the screw pair, the bearing and the locknut is axially formed in the second housing, and the second housing is made of aluminum alloy.
In the above high power-to-weight ratio all-electric clamping device, the output rod is a solid round straight rod, the diameter range of the output rod is set to be phi 40-50 mm, the length range of the output rod is set to be 200-300 mm, and the output rod is made of 45# stainless steel.
In the above full electric clamping device with high power-to-weight ratio, the rotation speed regulator adopts a potentiometer equipped with a travel switch for regulating the rotation speed of the motor.
In the above-mentioned high power-weight ratio all-electric clamping device, the bearing is an angular contact ball bearing.
In the above full-electric clamping device with high power-to-weight ratio, the screw pair is a planetary roller screw pair, and includes a roller screw and a screw nut, the roller screw is engaged with the screw nut, and the screw nut is screwed with the output rod.
In the above-mentioned all-electric clamping device with high power-to-weight ratio, the adaptor uses a ball-and-socket joint bearing or a cylindrical key.
Compared with the prior art, the invention has the beneficial effects that:
【1】 According to the invention, the full-electric system is used for replacing a hydraulic system to drive the clamping device, so that the size and the weight of the fire fighting tongs are greatly reduced, and the power-weight ratio is improved; the stress of the clamping device is fed back to the display screen in real time by using the sensor and the display screen, and a user can adjust the rotating speed of the motor through the rotating speed regulator according to the numerical value on the display screen, so that the clamping device is safe and efficient; and the dual-purpose motor is utilized, when a power supply is available in a use place, the power supply can be realized through the power line at the rear end of the motor shell, and if the power supply is unavailable, the power supply can be realized by the mobile battery at the lower end of the motor shell, so that the universality of the product is improved.
【2】 The planetary roller screw pair is used as a main transmission component, and the rollers in the nut of the planetary roller screw pair are in contact with the screw thread line in the transmission process, so that the bearing capacity of the planetary roller screw is far greater than that of a common ball screw under the condition of the same size, the power-weight ratio of the device is obviously improved, and the probability of screw locking in the motion process is reduced.
【3】 The invention has compact integral structure, relatively long service life, wide application range and good market application prospect, is suitable for various working environments, and can still well run under complex working conditions.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic view of the present invention
FIG. 2 is a cross-sectional view of the present invention
Wherein: 1, cutting pliers; 2, a shell; 3 a first housing; 4, a hand wheel; 5, displaying a screen; 6 a second housing; 7, a motor; 8 power supply lines; 9, a sensor; 10 output rods; 11 a locknut; 12, a coupler; 13 motor output shaft; 14 a rotational speed regulator; 15 batteries; 16 bearings; 17, a lead screw pair; 18 an adapter; 171 roller screws; 172 lead screw nuts;
Detailed Description
In order that the manner in which the invention is worked will become more apparent, the invention will be further described with reference to the following description and specific examples taken in conjunction with the accompanying drawings in which:
as shown in fig. 1-2, a high power-to-weight ratio all-electric clamping device comprises a pair of scissors 1, a housing 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 coupling 12, a motor output shaft 13, a rotation 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 screw pair 17 through a coupler 12 and is assembled with a bearing 16 and a locknut 11, the 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 cutting nippers 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.
Preferably, the housing 2 is of a hollow block structure, the cross section of the housing 2 is in a fan shape, the opening angle of the fan shape is not more than 152 degrees, and the material of the housing 2 is a polyester fiber composite material.
Preferably, the first housing 3 is of a hollow cylindrical structure, the first housing 3 is axially provided with a stepped hole for mounting the sensor 9 and the adapter 18, and the first housing 3 is made of a polyester fiber composite material.
Preferably, the hand wheel 4 is used for adjusting the orientation of the cutting nipper 1, and the material of the hand wheel 4 is rubber.
Preferably, the second housing 6 is of a hollow cylindrical structure, the second housing 6 is axially provided with a stepped hole for mounting the screw pair 17, the bearing 16 and the locknut 11, and the second housing 6 is made of aluminum alloy.
Preferably, 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 material of the output rod 10 is 45# stainless steel.
Preferably, the rotation speed regulator 14 is equipped with a travel switch using a potentiometer for regulating the rotation speed of the motor 7.
Preferably, the bearing 16 is an angular contact ball bearing.
Preferably, the screw pair 17 is a planetary roller screw pair, and includes a roller screw 171 and a screw nut 172, the roller screw 171 is engaged with the screw nut 172, and the screw nut 172 is screwed with the output rod 10.
Preferably, the adapter 18 is implemented with ball and socket bearings or cylindrical keys.
The working principle of the invention is as follows:
when the full-electric clamping device is required to work, an operator respectively holds the hand wheel 4 and the rotating speed regulator 14 with two hands, the motor 7 is started, the motor output shaft 13 drives the roller screw 171 to rotate through the coupler 12, the torque of the roller screw 171 is converted into thrust through the screw nut 172 and transmitted to the output rod 10 and pushes the output rod 10 to move along a straight line, the output rod 10 drives the adapter 18 to move, the shear pliers 1 can be driven to do work, meanwhile, the sensor 9 feeds the stress condition of the clamping device back to the display screen 5 in real time, and the operator can conveniently regulate the rotating speed of the motor 7 through the rotating speed regulator 14 according to the numerical value on the display screen 5.
Those skilled in the art will appreciate that the details not described in the present specification are well known.

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.
CN201711139961.0A 2017-11-16 2017-11-16 High-power-to-weight ratio full-electric clamping device Active CN107971559B (en)

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CN109877379A (en) * 2019-03-13 2019-06-14 富华中元江苏重机科技有限公司 A kind of novel scissor-type cutting head

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