CN111113289A

CN111113289A - Locking plate pliers

Info

Publication number: CN111113289A
Application number: CN202010024405.4A
Authority: CN
Inventors: 赵宇; 李保文; 杨洋; 龙洋; 叶茂; 牛孝霞
Original assignee: AECC Shenyang Engine Research Institute
Current assignee: AECC Shenyang Engine Research Institute
Priority date: 2020-01-10
Filing date: 2020-01-10
Publication date: 2020-05-08
Anticipated expiration: 2040-01-10
Also published as: CN111113289B

Abstract

The application relates to a locking plate pliers, which comprises a left handle assembly and a right handle assembly which are oppositely arranged, wherein the left handle assembly comprises a left handle, a first connecting rod and a second connecting rod which are hinged to the same point of the left handle, the right handle assembly comprises a right handle, a third connecting rod and a fourth connecting rod which are hinged to the same point of the right handle, the first connecting rod and the third connecting rod are hinged to a first movable point, the second connecting rod and the fourth connecting rod are hinged to a second movable point, and the first movable point and the second movable point can be controlled to relatively move along a connecting line of the two points by controlling the left handle and the right handle to relatively approach or leave; the binding clip is connected to the first movable point through a bearing rod and is provided with a pressing surface in a preset shape; the jaw is provided with a preset-shaped space, the preset-shaped space can accommodate the tong head, and the tong head can move in the preset-shaped space under the action of the bearing rod; and the shell forms a supporting structure, the shell is connected with the clamp head and the left and right handles, and the shell can move relative to the left and right handles.

Description

Locking plate pliers

Technical Field

The application belongs to the technical field of hardware tools, and particularly relates to locking plate pliers.

Background

Locking plate locking is as one of mechanical locking, is applied to aeroengine assembly field in a large number. The locking plate locking operation space is limited due to the complex structure of the engine. The locking requirement of the engine locking plate is high, for example, the locking lug and the nut need to be tightly attached, the locking lug cannot exceed the thickness of the nut, indentation cannot be formed, and the locking lug cannot be used for the second time.

Different configurations of locking tabs are shown in fig. 1a to 1 c. As shown in fig. 2, after the bolt 3 passes through the locking plate 4, when the bolt 3 is used for connecting the structural member 1 and the structural member 2, in order to prevent the bolt 3 from loosening, the locking plate 4 is pre-bent, and then completely bent by a tool, so that the locking plate is tightly attached to the edge of the bolt 3, thereby realizing the anti-loosening of the bolt 3, as shown in fig. 3.

In the prior art, though there are locking plate pliers for assembly, the problem of the locking plate lock lug root sticking cannot be solved, the lock lug root is deformed and tightly knocked by using a copper bar and an aluminum bar through an impact method, the locking plate is damaged and cannot be used, and the locking plate cannot be perfectly attached when being adapted to the heads of bolts/nuts with various specifications.

Disclosure of Invention

It is an object of the present application to provide a locking plate pliers to solve or mitigate at least one of the problems of the background art.

The technical scheme of the application is as follows: a locking clip pliers, comprising:

the left handle assembly comprises a left handle, a first connecting rod and a second connecting rod which are hinged to the same point of the left handle, the right handle assembly comprises a right handle, a third connecting rod and a fourth connecting rod which are hinged to the same point of the right handle, the first connecting rod and the third connecting rod are hinged to a first movable point, the second connecting rod and the fourth connecting rod are hinged to a second movable point, and the first movable point and the second movable point can be controlled to move relatively along a connecting line of the two points by controlling the left handle and the right handle to be relatively close to or far away from each other;

the tong head is connected to the first movable point through a bearing rod and is provided with a pressing surface in a preset shape;

the jaw is provided with a preset-shaped space, the preset-shaped space can accommodate the tong head, and the tong head can move in the preset-shaped space under the action of the bearing rod; and

a housing forming a support structure, the housing connecting the binding clip and the left and right handles, wherein the housing is movable relative to the left and right handles.

In a preferred embodiment of the application, a first strip-shaped hole is formed in the left handle, and the shell penetrates through the first strip-shaped hole through a connecting piece to realize the relative movement of the shell and the left handle; and a second strip-shaped hole is formed in the right handle, the shell penetrates through the first strip-shaped hole through a connecting piece to realize the relative movement of the shell and the right handle.

In a preferred embodiment of the present application, an axis of the first bar-shaped hole and an axis of the second bar-shaped hole have a predetermined angle.

In a preferred embodiment of the present application, the left handle assembly and the right handle assembly are symmetrically disposed about the two-point connection.

In a preferred embodiment of the present application, the first link, the second link, the third link, and the fourth link are identical in structure.

In a preferred embodiment of the present application, the housing has at least one guide groove along a line connecting the two points, and the guide groove has a locking screw connected to the first movable point and/or the second movable point, and the locking screw is adjustable to limit the movement of the first movable point and/or the second movable point.

In a preferred embodiment of the present application, the predetermined shape of the pressing surface and the predetermined shape space form a head shape matched with a pressed bolt or nut, and the shapes include a triangle, a square and a regular hexagon.

In a preferred embodiment of the present application, a lock nut is fixed to an end of the housing away from the binding clip, an adjusting bolt is disposed in the lock nut, the adjusting bolt can move along a two-point connection line relative to the lock nut, and the opening angle of the locking pliers is adjusted by controlling the position of the second movable point.

The locking plate pliers of this application have following advantage:

1. the stress surface is completely attached to the pre-tightening nut, so that the pre-tightening nut has a positioning function, the clamping position does not need to be aligned for many times, the requirement on the technical level of a technician in the operation process is low, the locking plate cannot be damaged, and rework caused by the damage of the locking plate is not needed (the locking plate is replaced, the nut needs to be disassembled and then pre-tightened again, and the operation of the existing scheme is repeated until the assembly is qualified);

2. the pre-tightening effect is not influenced by the impact of the pre-tightened nut in the operation process, so that the pre-tightening effect is not influenced;

3. the jaw adjusting bolt is arranged, so that the relative position of the opening and closing range of the jaw in the main body can be adjusted to adapt to different sizes and installation positions of the nut lock plate, the operation interference condition is reduced, meanwhile, the space angle of the connecting rod in the main body is changed after the adjusting bolt is adjusted, the included angle between the axis of the connecting rod and the axis of the jaw is reduced, the acting force of the jaw on the lock lug of the lock plate is improved to the maximum extent under the condition that the stress of the handle is not changed, and the lock lug of the lock plate is tightly attached to the nut;

4. the lever and the hinge are combined to achieve mechanical linear displacement, the operation action is taken as the lever through the handle to push the hinge mechanism to move, and then the jaw movement is achieved to complete the locking action;

5. the soft metal bonding phenomenon of texture does not exist in the operation process, and the method is also suitable for places with high requirements on working environment, such as: bearing cavities, gear boxes, etc.;

6. have in this application and can effectively laminate stress surface and locking surface with the nut, be in balanced state at locking in-process power, can not make the cooperation parts produce the displacement.

Drawings

In order to more clearly illustrate the technical solutions provided by the present application, the following briefly introduces the accompanying drawings. It is to be expressly understood that the drawings described below are only illustrative of some embodiments of the invention.

Fig. 1a to 1c are schematic views of locking plates with different structures in the prior art.

Fig. 2 is a schematic view illustrating a bending process of a locking plate in the prior art.

Fig. 3 is a top view of the folded locking piece of fig. 2.

Fig. 4 is a schematic view of the locking pliers structure (without housing installed) of the present application.

Fig. 5 is a schematic view of the locking pliers structure (mounting housing) of the present application.

Fig. 6 is a schematic diagram of adjusting a set screw in the locking plate pliers structure of the present application.

Detailed Description

In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application.

As shown in fig. 4, the locking pliers 10 provided by the present application mainly include: the left handle assembly 11 and the right handle assembly 12 are oppositely arranged, wherein the left handle assembly 11 comprises a left handle 111 and a first connecting rod 112 and a second connecting rod 113 which are approximately hinged at the same point at the middle upper part of the left handle, the right handle assembly 12 comprises a right handle 121 and a third connecting rod 122 and a fourth connecting rod 123 which are also approximately hinged at the same point at the middle upper part of the right handle, the first connecting rod 112 and the third connecting rod 122 are hinged at a first movable point 114, the second connecting rod 113 and the fourth connecting rod 123 are hinged at a second movable point 124, and the first movable point 114 and the second movable point 124 can be controlled to relatively move along a two-point connecting line by controlling the left handle 111 and the right handle 121 to relatively approach or move away (i.e. open and close) to provide power; the tong head 14 is connected to the first movable point 114 through a bearing rod 15, the end part of the tong head 14 is provided with a pressing surface 141 with a preset shape, and the thickness of the pressing surface 141 is not less than the thickness of the head part of a pressed bolt or nut; a jaw 13 with a preset-shaped space 131, wherein the preset-shaped space 131 can accommodate the tong head 14, and the tong head 14 can slide and move in the preset-shaped space 131 under the action of a bearing rod 15; and a housing 16 constituting a support structure for the handles, hinges, adjusting screws, etc., and receiving forces of the respective components in operation, the housing 16 connecting the jaw 14 and the left and

right handles

111 and 121, wherein the housing 16 is movable relative to the left and

right handles

111 and 121.

The hinge in the above structure is achieved by rivets.

In the application, the left handle 111 is provided with a first strip-shaped hole 111a, and the shell 16 passes through the first strip-shaped hole 111a through the connecting piece to realize the relative movement of the shell 16 and the left handle 111; the right handle 121 is provided with a second strip-shaped hole 121a, and the housing 16 can also pass through the 2 nd strip-shaped hole 121a through a connecting piece to realize the relative movement of the housing 16 and the right handle 121.

In the present application, the axis of the first hole 111a and the axis of the second hole 121a have a predetermined angle, and the predetermined angle is determined according to the movable displacement of the forceps head 14 in the jaw 13.

In the present application, the left handle assembly 11 and the right handle assembly 12 are symmetrically disposed on a two-point connecting line.

In the present application, the first link 112, the second link 113, the third link 122, and the fourth link 123 have the same structure.

In this application, the housing 16 has at least one guide groove 162/163 along the two-point connecting line, and the locking screw 17 connected to the first movable point 114 and/or the second movable point 124 is disposed in the guide groove 162/163, so that the movement of the first movable point 114 and/or the second movable point 124 can be limited by adjusting the locking screw 17.

In the present application, the predetermined-shaped pressing surface 141 and the predetermined-shaped space 131 form a head shape matched to the pressed bolt or nut, and the shape includes a triangle, a square, and a regular hexagon.

As shown in fig. 4 to 6, the locking plate pliers of the present embodiment are adapted to the hexagonal bolt head, and therefore in the present embodiment, the pressing surface 141 is a V-shaped structure, and contacts with the locking plate locking lug, and correspondingly, the predetermined shape space 131 is an inverted V-shaped structure, and the locking of the locking plate locking lug under the hexagonal bolt can be realized through the cooperation of the two.

In the present application, a lock nut 18 is fixed to an end of the housing 16 away from the binding clip 14, an adjusting bolt 19 is disposed in the lock nut 18, the adjusting bolt 19 can move along a two-point connection line relative to the lock nut 18, and the opening angle of the locking pliers can be adjusted by controlling the position of the second movable point 124.

The locking plate pliers of this application have following advantage:

5. the soft metal bonding phenomenon of texture does not exist in the operation process, and the method is also suitable for places with high requirements on working environment, such as: bearing cavities, gear boxes, etc.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. Locking plate pliers, characterized in that the locking plate pliers (10) comprise:

the left handle assembly (11) and the right handle assembly (12) are oppositely arranged, wherein the left handle assembly (11) comprises a left handle (111) and a first connecting rod (112) and a second connecting rod (113) which are hinged to the same point of the left handle, the right handle assembly (12) comprises a right handle (121) and a third connecting rod (122) and a fourth connecting rod (123) which are hinged to the same point of the right handle, the first connecting rod (112) and the third connecting rod (122) are hinged to a first movable point (114), the second connecting rod (113) and the fourth connecting rod (123) are hinged to a second movable point (124), and the first movable point (114) and the second movable point (124) can be controlled to relatively move along a two-point connecting line by controlling the left handle (111) and the right handle (121) to relatively approach or move away;

the tong head (14) is connected to the first movable point (114) through a bearing rod (15), and the tong head (14) is provided with a pressing surface (141) with a preset shape;

a jaw (13) with a preset-shaped space (131), wherein the preset-shaped space (131) can accommodate the tong head (14), and the tong head (14) can move in the preset-shaped space (131) under the action of the bearing rod (15); and

a housing (16) forming a support structure, the housing (16) connecting the jaw (14) and the left and right handles (111, 121), wherein the housing (16) is movable relative to the left and right handles (111, 121).

2. The locking pliers according to claim 1, wherein the left handle (111) is provided with a first elongated hole (111a), and the housing (16) is moved relative to the left handle (111) by a connecting member passing through the first elongated hole (111 a); the right handle (121) is provided with a second strip-shaped hole (121a), and the shell (16) penetrates through the 2 nd strip-shaped hole (121a) through a connecting piece to realize the relative movement of the shell (16) and the right handle (121).

3. The locking pliers according to claim 2, wherein the axis of the first elongated hole (111a) and the axis of the second elongated hole (121a) have a predetermined angle.

4. The locking clip of claim 3, wherein said left handle assembly (11) and said right handle assembly (12) are symmetrically disposed about said two-point line.

5. The locking clip of claim 4, wherein said first link (112), second link (113), third link (122), and fourth link (123) are identical in construction.

6. Locking clip according to claim 1, characterized in that the housing (16) has at least one guide groove (162,163) arranged along the line between the two points, and in that the guide groove (162,163) is provided with a locking screw (17) connected to the first movable point (114) and/or the second movable point (124), wherein the movement of the first movable point (114) and/or the second movable point (124) can be limited by adjusting the locking screw (17).

7. The locking clip of claim 1, wherein said compression surface (141) of predetermined shape and said space (131) of predetermined shape are configured to match the shape of the head of a compressed bolt or nut, said shapes including triangular, square and regular hexagonal.

8. The locking pliers according to claim 1, wherein a locknut (18) is fixed to the end of the housing (16) remote from the binding head (14), and an adjusting bolt (19) is provided in the locknut (18), wherein the adjusting bolt (19) can move relative to the locknut (18) along a two-point connecting line, and the opening angle of the locking pliers is adjusted by controlling the position of the second movable point (124).