CN209970648U

CN209970648U - Nut anti-theft device

Info

Publication number: CN209970648U
Application number: CN201920474317.7U
Authority: CN
Inventors: 陆伟强; 陆嬿; 管健; 陈东
Original assignee: Suzhou Power Supply Co of State Grid Jiangsu Electric Power Co Ltd
Current assignee: Suzhou Power Supply Co of State Grid Jiangsu Electric Power Co Ltd
Priority date: 2019-04-10
Filing date: 2019-04-10
Publication date: 2020-01-21
Anticipated expiration: 2029-04-10

Abstract

The utility model discloses a nut anti-theft device, it includes the framework, strikes the head, is used for providing the power component of power and can provide the bearing subassembly of the holding power towards the head direction of strikeing to the head of strikeing, strikes on the head is fixed in power component, bearing unit mount in the framework, bearing subassembly with it extrudees the space to form between the head to strike. The utility model discloses utilize power component to drive the impact head and go forward, make impact head contact screw rod profile of tooth part, exposed screw rod screw thread receives powerful extrusion deformation above the nut, and 3 ~ 4 tooth screw thread portions of single-point subregion are out of shape, and the screw rod main part is indeformable to play prevents stolen to the nut locking.

Description

Nut anti-theft device

Technical Field

The utility model belongs to electric power construction safety equipment field, in particular to nut anti-theft device.

Background

Traditional rag bolt mode of hiring a hair adopts the hammer to hammer by the manual work, and the quality of hiring a hair is wayward, requires high to the operating personnel, and is inefficient to be not applicable to the rag bolt of the high strength alloy steel material of present a large amount of applications in the engineering, alloy steel hardness after the thermal treatment quenching and tempering is high, and the fragile destruction tendency increases with stress concentration's sensitivity, adopts the risk that the mode of hammering makes rag bolt bursting apart. Therefore, a novel bolt roughening hydraulic machine is developed, and aims to reduce the labor intensity of operators and improve roughening quality and efficiency.

Disclosure of Invention

The utility model aims at providing a convenient to carry and safe efficient nut anti-theft device.

In order to achieve the above purpose, the utility model adopts the technical scheme that: the nut anti-theft device comprises a frame body, an impact head, a power assembly and a bearing assembly, wherein the power assembly is used for providing power for the impact head, the bearing assembly can provide supporting force towards the direction of the impact head, the bearing assembly is arranged on the frame body, and an extrusion space is formed between the bearing assembly and the impact head.

Optimized, the framework has preceding tip and back end, the impact head is located with sliding the preceding tip of framework, the load subassembly is fixed to be located the framework back end, power component is hydro-cylinder and oil pump, the back end of hydro-cylinder with the preceding tip looks fixed connection of framework, the piston rod of hydro-cylinder is followed the back end of hydro-cylinder stretches out, the oil pump pass through quick-operation joint with the hydro-cylinder front end outside is connected, the hydro-cylinder is the spring hydro-cylinder that resets, the piston rod with impact head looks fixed connection.

Furthermore, the frame body comprises two side plates which are symmetrically arranged and a bottom plate which is fixedly connected to the rear end parts of the side plates, and the force bearing assembly comprises force bearing pins which are respectively embedded between the side plates and the bottom plate.

Furthermore, the front end parts and the opposite side surfaces of the two side plates are respectively provided with a sliding groove, the side walls of the impact head are respectively provided with a sliding block corresponding to the sliding groove, and the sliding blocks are connected in the sliding grooves in a sliding manner.

Further, the distance between the side plates is larger than the diameter of the nut.

Furthermore, an installation groove with a small belly is formed between the side plate and the bottom plate, the force bearing pin is embedded in the installation groove, the side surface of the force bearing pin is provided with a part which protrudes out of the inner side of the frame body in a small amount, and the force bearing pin and the impact head form three extrusion positions.

Furthermore, the force bearing components are symmetrically arranged on the frame body by taking the axial lead of the piston rod as a central line.

Preferably, the nut anti-theft device further comprises a handle fixedly connected with the rear end part of the oil cylinder.

Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages: the utility model discloses utilize power component to drive the impact head and go forward, make impact head contact screw rod profile of tooth part, exposed screw rod screw thread receives powerful extrusion deformation above the nut, and 3 ~ 4 tooth screw thread portions of single-point subregion are out of shape, and the screw rod main part is indeformable to play prevents stolen to the nut locking.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a left side view of the utility model;

wherein: 1. a frame body; 2. an impact head; 3. a power assembly; 4. a force bearing component; 5. a handle; 11. a side plate; 12. a base plate; 13. a chute; 14. a slider; 15. mounting grooves; 16. pressing a plate; 30. an oil cylinder; 31. a cylinder body; 32. a piston rod; 33. a piston; 34. a spring; 41. a bearing pin.

Detailed Description

The invention will be further described with reference to examples of embodiments shown in the drawings.

As shown in fig. 1, 2 and 3, the nut anti-theft device comprises a frame 1, an impact head 2, a power component 3 for providing power to the impact head 2, a force bearing component 4 capable of providing supporting force towards the direction of the impact head 2 and a handle 5. The bearing component 4 is arranged on the frame body 1, and an extrusion space is formed between the bearing component 4 and the impact head 2.

Frame 1 has preceding tip and rear end portion, and the preceding tip of frame 1 is located to impact head 2 with sliding, and force bearing component 4 is fixed to be located frame 1 rear end portion, and power component 3 is hydro-cylinder 30 and oil pump (the oil pump is prior art, not shown in the figure), the oil pump pass through quick-operation joint 6 with the hydro-cylinder 30 front end portion outside is connected, hydro-cylinder 30 is spring reset hydro-cylinder, its include cylinder body 31, slide set up with piston 33 in the cylinder body 31 and with piston 33 looks fixed connection's piston rod 32 and the spring 34 that makes piston rod 32 reset, the rear end portion of cylinder body 31 passes through screw thread looks fixed connection with the preceding tip of frame 1, and piston rod 32 and impact head 2 looks fixed connection of hydro-cylinder 30, the link fixed mounting of handle 5 in on the lateral wall of cylinder body 31 rear end portion. The frame body 1 includes two side plates 11 symmetrically arranged and a bottom plate 12 fixedly connected to the rear end portions of the side plates 11, and the bottom plate 12 and the side plates 11 are integrally formed. The force bearing component 4 comprises force bearing pins 41 respectively embedded between the side plates 11 and the bottom plate 12. The force bearing pins 41 are symmetrically arranged on the frame body 1 by taking the axial lead of the piston rod 32 as a central line. The front end parts and the opposite side surfaces of the two side plates 11 are respectively provided with a sliding groove 13, the side walls of the impact head 2 are respectively provided with a sliding block 14 corresponding to the sliding groove 13, and the sliding blocks 14 are connected in the sliding grooves 13 in a sliding manner. An installation groove 15 with a large belly is formed between the side plate 11 and the bottom plate 12, the bearing pin 41 is embedded in the installation groove 15, the side surface of the installation groove has a part which protrudes out of the inner side of the frame body 1 and forms three extrusion positions with the impact head 2, two ends of the installation groove 15 are positioned on the upper end surface and the lower end surface of the bottom plate 12 and the side plate 11, and pressing plates 16 for preventing the bearing pin 41 from sliding out of the installation groove 15 are arranged on the upper end surface and the lower end surface of the bottom plate 12. The spacing of the side plates 11 is greater than the diameter of the nut.

The impact head is arranged at the end part of the piston rod, the piston rod drives the impact head to move forward under the action of oil pressure loading, the impact head is made to contact with a thread part of the screw, and the exposed screw thread on the nut is extruded and deformed by strong force (the thread part of the single-point small area is deformed by 3-4 threads, and the screw body is not deformed) so as to lock the nut and prevent the nut from being stolen. The shape of the bearing body is a frame, the width of the inner cavity of the frame is the maximum screw diameter, and a proper margin is added, and the size of the side plate is the maximum oil cylinder thrust (KN) multiplied by 1.5 times of a safety coefficient; the bottom plate is a screw bearing surface, in order to adapt to the support of screws with different diameters, and the allowable self compression stress is far larger than the maximum deformation compression stress of the screw tooth part, therefore, two bearing pins (with the hardness of HRC 50) are designed and embedded in the rear end part of the frame body, thereby meeting the overall compression strength and the technical requirement of the allowable compression stress of the frame body. The shape and the size of the hydraulic head need to meet the requirements at the same time: 1. good guiding stability: when synchronously pushed with the piston rod, the piston rod is stable and follows firmly; 2. the shape of the contact part of the impact head and the tooth shape meets the allowable thrust strength of the maximum load and also meets the compression deformation of the 3-4 threads under positive pressure.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The nut anti-theft device comprises a frame body, an impact head, a power assembly and a bearing assembly, wherein the power assembly is used for providing power for the impact head, the bearing assembly can provide supporting force towards the direction of the impact head, the bearing assembly is arranged on the frame body, and an extrusion space is formed between the bearing assembly and the impact head.

2. The nut theft protection device according to claim 1, wherein: the framework has preceding tip and back end, the impact head is located with sliding the preceding tip of framework, the load subassembly is fixed to be located the framework back end, power component is hydro-cylinder and oil pump, the back end of hydro-cylinder with the preceding tip looks fixed connection of framework, the piston rod of hydro-cylinder is followed the back end of hydro-cylinder stretches out, the oil pump pass through quick-operation joint with the hydro-cylinder front end outside is connected, the hydro-cylinder is the spring reset hydro-cylinder, the piston rod with impact head looks fixed connection.

3. The nut theft protection device according to claim 2, wherein: the frame body comprises two side plates which are symmetrically arranged and a bottom plate which is fixedly connected to the rear end parts of the side plates, and the force bearing assemblies comprise force bearing pins which are respectively embedded between the side plates and the bottom plate.

4. The nut theft protection device according to claim 3, wherein: the front end parts and the opposite side surfaces of the two side plates are respectively provided with a sliding groove, the side walls of the impact head are respectively provided with a sliding block corresponding to the sliding groove, and the sliding block is connected in the sliding groove in a sliding manner.

5. The nut theft protection device according to claim 3, wherein: the distance between the side plates is larger than the diameter of the nut.

6. The nut theft protection device according to claim 3, wherein: an installation groove with a large belly and a small mouth is formed between the side plate and the bottom plate, the bearing pin is embedded in the installation groove, the side surface of the bearing pin is less provided with a part protruding out of the inner side of the frame body, and the bearing pin and the impact head form three extrusion positions.

7. The nut theft protection device according to claim 2, wherein: the force bearing components are symmetrically arranged on the frame body by taking the axial lead of the piston rod as a central line.

8. The nut theft protection device according to claim 1, wherein: the nut anti-theft device also comprises a handle fixedly connected with the rear end part of the oil cylinder.