Lock piece pliers

Abstract

The present invention discloses a lock piece clamp, which includes a right clamp body, a left clamp body, a hinge plate and a lock block. The left clamp body, the hinge plate and the lock block are all located in the empty groove of the right clamp body. The right clamp body and the left clamp body are both provided with a first curved arm and a second curved arm adapted to the shape of the part assembly space. The second chute on the hinge plate converts the force of the right clamp body and the left clamp body into the rotation of the hinge plate. The third chute on the lock block converts the force of the rotation of the hinge plate onto the lock block. Through the cooperation of the guiding hole on the lock block and the chute on the right clamp body, the direction of the force is finally converted into the left and right movement of the lock block and cooperates with the jaws on the right clamp block to achieve the locking of the stop lock piece. The lock piece clamp of the present invention occupies a small space, includes curved arms adapted to the curved assembly space, and is simple to operate.

Description

Technical Field

[0001] The present invention belongs to the field of aero-engine manufacturing technology, and particularly relates to a tool for assembling locking washers in the assembly of aero-engines. Background Art

[0002] In the assembly of aero-engines, stop locking washers are widely used to stop connecting bolts. The existing locking washer tool structure consists of an upper jaw A, a lower jaw B, and a jaw C. This locking washer pliers can meet the locking requirements of stop locking washers at most assembly positions.

[0003] However, in the engine assembly, there are some curved and narrow spaces formed between some components. The existing locking washer tool cannot enter, and only tools such as screwdrivers can be used to strike and press the locking washer to meet the locking requirements. The above operation methods are inconvenient in applying force, slow in speed, unreliable in pressing, and there is a risk of scratching engine parts. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention aims to provide a locking washer pliers that can be used in the assembly of aero-engines and meet the purpose of quickly, reliably, and safely assembling locking washers in curved and narrow spaces.

[0005] Specifically, the present invention adopts the following technical solutions:

[0006] A locking washer pliers, comprising

[0007] A right jaw, the right jaw includes a right grip handle, one end of the right grip handle is connected to the first end of a curved first arm. A jaw, a first pin hole, a second pin hole, and two parallel first chutes are provided at the second end of the first arm. An empty slot is also provided on the first arm.

[0008] A left jaw, the left jaw includes a left grip handle, one end of the left grip handle is connected to the first end of a curved second arm. The second end of the second arm is located in the empty slot. A card slot, a third pin hole, and a fourth pin hole are provided at the second end of the second arm. The fourth pin hole penetrates the card slot. The left jaw is hinged to the right jaw through the third pin hole, the first pin hole, and a pin shaft.

[0009] A hinge plate, a part of the hinge plate is placed in the card slot. A second chute, a fifth pin hole, and a sixth pin hole are provided on the hinge plate. A pin is inserted into the second chute, and the pin is also inserted into the fourth pin hole. The hinge plate is hinged to the right jaw through the fifth pin hole, the second pin hole, and a pin shaft.

[0010] The locking block is placed in the empty slot of the first curved arm. The locking block is provided with a third sliding groove, two guiding holes, and a second clamping groove. A part of the hinge plate is accommodated in the second clamping groove, and the hinge plate is slidably connected in the third sliding groove through a sixth pin hole and a pin inserted in the sixth pin hole. The locking block is slidably connected in two first sliding grooves of the right jaw body through two pins and two guiding holes.

[0011] Furthermore, the thickness and bending shape of the first curved arm are determined according to the shape of the assembly space inside the engine. The thickness of the second curved arm is less than the thickness of the empty slot, and the bending shape of the second curved arm is the same as that of the first curved arm.

[0012] Furthermore, the second sliding groove, the fifth pin hole, and the sixth pin hole on the hinge plate are not on the same straight line.

[0013] Furthermore, the connection line of the two guiding holes is parallel to the third sliding groove.

[0014] Furthermore, the two first sliding grooves c are perpendicular to the jaw working surface.

[0015] Compared with the prior art, the present invention has the following characteristics:

[0016] (1) The left jaw body, the hinge plate, and the locking block are almost entirely accommodated in the empty slot of the right jaw body, greatly reducing the volume and operating space of the lock piece pliers, making it suitable for the assembly of lock pieces in narrow spaces;

[0017] (2) The structures of the second curved arm and the first curved arm on the left jaw body and the right jaw body can adapt to the curved assembly space, improving the operability of the lock piece pliers;

[0018] (3) The jaws on the right jaw body and the surface of the locking block form two working surfaces for clamping the lock piece, and the separation or combination of the jaws and the locking block is realized through the relative rotation of the left jaw body and the right jaw body, and the entire action mechanism is simple.

[0019] The present invention can quickly, reliably, and safely install the lock piece in a curved and narrow space, improving the assembly efficiency of the stop lock piece in such special spaces, avoiding the risk of scratching engine parts, and eliminating quality hidden dangers. Description of the Drawings

[0020] Figure 1 Schematic diagram of the structure of the existing lock piece pliers

[0021] Figure 2 Schematic diagram of the structure of the present invention;

[0022] Figure 3 Schematic diagram of the right jaw body of the present invention;

[0023] Figure 4 A - A cross-sectional view of the right jaw body of the present invention;

[0024] Figure 5 Structural schematic diagram of the left pliers body of the present invention;

[0025] Figure 6 A - A sectional view of the left pliers body of the present invention;

[0026] Figure 7 Structural schematic diagram of the hinge plate of the present invention;

[0027] Figure 8 Structural diagram of the lock block of the present invention;

[0028] In the figure: 1. Right pliers body; 2. Left pliers body; 3. Hinge plate; 4. Lock block; 5. Pin shaft; 1a. First curved arm; 1b. Empty groove; 1c. First sliding groove; 2a. Second curved arm; 2b. Card slot; 3a. Second sliding groove; 4a. Third sliding groove; 4b. Second card slot; 4c. Guide hole. Detailed implementation manners

[0029] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. However, it should not be understood that the scope of the subject matter of the present invention is limited to the following embodiments. Without departing from the above technical idea of the present invention, all modifications, substitutions, and changes made according to ordinary technical knowledge and customary means in the art are included in the scope of the present invention.

[0030] As Figures 2 to 6 , a lock - piece tool in this embodiment specifically includes a right pliers body 1, a left pliers body 2, a hinge plate 3, a lock block 4, and a pin shaft 5. Among them, the left pliers body 2, the hinge plate 3, and the lock block 4 are assembled in the empty groove 1b of the right pliers body 1 through 3 pin shafts 5 and 2 pins according to Figure 2 the assembly.

[0031] As Figure 2 , 3 and 4, the right pliers body 1 is designed with a jaw, a first pin hole, a second pin hole, a first curved arm 1a, an empty groove 1b, and two parallel first sliding grooves 1c. The curved shape of the first curved arm 1a is used to adapt to the curved and narrow space formed by engine parts. The cavity of the empty groove 1b is used to assemble (accommodate) the remaining parts of the entire tool (including the part of the left pliers body 2 except the left pliers handle, the hinge plate 3, and the lock block 4). The two parallel first sliding grooves 1c guide the lock block 4, so that the clamping working surface of the lock block 4 is always parallel to the working surface of the jaw.

[0032] As Figure 5 and 6, on the left pliers body 2, there are a second bent arm 2a, a clamping groove 2b, a third pin hole and a fourth pin hole designed. Among them, the fourth pin hole intersects with the clamping groove 2b. The second bent arm 2a is used to adapt to the curved and narrow space formed by engine components, and is usually consistent with the shape of the first bent arm 1a. The clamping groove 2b is used to assemble a part of the limit hinge plate 3.

[0033] Such as Figure 7 , on the hinge plate 3, there are a second sliding groove 3a, a fifth pin hole and a sixth pin hole designed. The second sliding groove 3a is used to convert the direction of the force from the left pliers body 2. The pin shaft 5 in the fifth pin hole serves as a rotating shaft, and the pin shaft 5 in the sixth pin hole serves as a sliding connection point and a force application point with the lock block 4.

[0034] Such as Figure 8 , the left side surface of the lock block 4 serves as a working surface for clamping. On the lock block 4, there are a third sliding groove 4a, a second clamping groove 4b and two guiding holes 4c designed. The second clamping groove 4b is parallel to the connection line of the two guiding holes 4c. The guiding holes 4c cooperate with the first sliding groove 1c on the right pliers body 1, so that the lock block 4 can only move left and right. The second clamping groove 4b is used to assemble and accommodate the limit hinge plate 3, and the third sliding groove 4a is used to convert the direction of the force from the hinge plate 3.

[0035] During use, since the first bent arm 1a and the second bent arm 2a adapt to the curved and narrow space of the special position of the engine, the entire lock piece pliers can be inserted and placed at the lock piece. Then, force is applied to the right pliers handle of the right pliers body 1 and the left pliers handle of the left pliers body 2 to make them approach or move away from each other. The second sliding groove 3a converts the force of the right pliers body 1 and the left pliers body 2 into a rotational movement of the hinge plate 3 with the pin shaft 5 in the fifth pin hole as the rotating shaft. The third sliding groove 4a converts the rotational force of the hinge plate 3 to the lock block 4. Through the cooperation of the guiding holes 4c and the first sliding groove 1c, the direction of the force is finally converted into the left and right movement direction of the lock block 4, so as to approach or move away from the jaw ( Figure 3 the bent part at the lower left end of the right pliers body 1 in

[0036] The content not described in detail in the specification of the present invention belongs to the prior art well-known to those skilled in the art. Although the illustrative specific embodiments of the present invention are described above for the convenience of those skilled in the art to understand the present invention, it should be clear that the present invention is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions made using the concept of the present invention are within the scope of protection.

Claims

1. Locking piece pliers, characterized in that: including, a right pliers body (1), the right pliers body (1) includes a right holding handle, one end of the right holding handle is connected to the first end of a curved first arm (1a), the second end of the first arm (1a) is provided with a jaw, a first pin hole, a second pin hole and two parallel first chutes (1c), and an empty slot (1b) is also formed on the first arm (1a); a left pliers body (2), the left pliers body (2) includes a left holding handle, one end of the left holding handle is connected to the first end of a curved second arm (2a), the second end of the second arm (2a) is located in the empty slot (1b), a clamping groove (2b), a third pin hole and a fourth pin hole are formed on the second end of the second arm (2a), the fourth pin hole penetrates through the clamping groove (2b), and the left pliers body (2) is hinged to the right pliers body (1) through the third pin hole, the first pin hole and a pin shaft (5); a hinge plate (3), a part of the hinge plate (3) is placed in the clamping groove (2b), a second chute (3a), a fifth pin hole and a sixth pin hole are formed on the hinge plate (3), a pin is inserted in the second chute (3a), and the pin is also inserted in the fourth pin hole, and the hinge plate (3) is hinged to the right pliers body (1) through the fifth pin hole, the second pin hole and the pin shaft (5); a lock block (4), the lock block (4) is placed in the empty slot (1b) of the first arm (1a), a third chute (4a), two guide holes (4c) and a second clamping groove (4b) are formed on the lock block (4), a part of the hinge plate (3) is accommodated in the second clamping groove (4b), and the hinge plate (3) is slidably connected in the third chute (4a) through the sixth pin hole and the pin shaft (5) inserted in the sixth pin hole, and the lock block (4) is slidably connected in the two first chutes (1c) of the right pliers body (1) through two pins and the two guide holes (4c).

2. The lock piece pliers according to claim 1, characterized in that: The thickness and the curved shape of the first arm (1a) are determined according to the shape of the assembly space in the engine, the thickness of the second arm (2a) is smaller than the thickness of the empty slot (1b), and the curved shape of the second arm (2a) is the same as that of the first arm (1a).

3. The lock piece pliers according to claim 1, characterized in that: The second chute (3a), the fifth pin hole and the sixth pin hole on the hinge plate (3) are not on the same straight line.

4. The lock piece pliers according to claim 1, characterized in that: The connection line of the two guide holes (4c) is parallel to the third chute (4a).

5. The locking piece pliers according to claim 1, characterized in that: The two first chutes (1c) are perpendicular to the working surface of the jaw.

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