Torque transmission wrench based on toothed belt transmission and using method thereof

Abstract

The invention belongs to the technical field of aviation assembly manufacturing, and discloses a torque transmission wrench based on tooth-shaped belt transmission and a using method thereof.The torque transmission wrench comprises a shell used for providing structural support for a direction selection part and a torque transmission part; the torque transmission part comprises a first gear and a second gear which are linked through a toothed belt; and the direction selection part is used for limiting the torque direction, the direction toggle switch and the crankshaft are connected in series through a limiting rod, the V-shaped limiting stopper is connected to the shell in an inserted mode, the crankshaft is driven to toggle the V-shaped limiting stopper through rotation of the direction toggle switch, and therefore the rotation direction of the first gear is limited. According to the device, it can be guaranteed that a bolt can be installed or fixed in a narrow space where a ratchet wrench or a fixed-force wrench cannot enter, the structure is simple, use is convenient, and torque transmission in the narrow space can be stably achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of aviation assembly manufacturing, and specifically relates to a torque transmission wrench based on toothed belt transmission and a method of using the same. Background Art

[0002] Bolts are fasteners specially designed for connecting two or more components. They play an indispensable role in the aircraft assembly process. By using bolt connections, a huge aircraft component can be divided into several components connected by bolts, improving product processability and reducing manufacturing costs.

[0003] However, aircraft systems are numerous, the structure is complex, and the assembly chain is long, which inevitably leads to the need to disassemble and assemble bolts in a small space composed of several components. In the past, when encountering such a situation, the method of disassembling the components to open the construction path was adopted, which was a large workload and took a long time to prepare. In addition, the frequent disassembly and assembly of components affected the assembly quality.

[0004] Therefore, developing more convenient bolt disassembly and assembly technology in narrow spaces has become an important issue that needs to be urgently addressed in order to improve the quality of aviation assembly. Summary of the invention

[0005] The purpose of the present invention is to provide a torque transmission wrench based on toothed belt drive to overcome the problem of lack of convenient disassembly and assembly method of bolts in narrow spaces in existing actual production. The present invention ensures that the bolts to be disassembled can be quickly and conveniently disassembled even if they are located in a narrow space through the torque transmission effect of the torque transmission part.

[0006] The technical solution of the present invention is achieved in this way:

[0007] In a first aspect, the present invention provides a torque transmission wrench based on toothed belt transmission, comprising:

[0008] A housing, used to provide structural support for the direction selection part and the torque transmission part;

[0009] The torque transmission part includes a first gear and a second gear, which are linked by a toothed belt;

[0010] The direction selection part is used to limit the torque direction. The direction switch and the crankshaft are connected in series through the limit rod, and the V-type limiter is plugged into the shell. The direction switch is rotated to drive the crankshaft to move the V-type limiter, thereby limiting the rotation direction of the first gear.

[0011] As a further solution of the present invention: the direction selection part also includes a floating limiter for limiting the direction of the toggle switch, the floating limiter is plugged into the housing, and a spring is arranged between the floating limiter and the housing.

[0012] As a further solution of the present invention: the housing includes an upper housing and a lower housing that can be fitted together up and down, and the inner cavity of the housing is adapted to the toothed belt.

[0013] As a further solution of the present invention: flanges are provided on both sides of the first gear and the second gear, a square hole adapted to a ratchet wrench or a plug of a torque wrench is provided on the first gear, and a plum blossom hole adapted to a bolt head is provided on the second gear.

[0014] As a further solution of the present invention: a first through hole and a second through hole are provided at positions corresponding to the first gear and the second gear on the housing, and the first through hole and the second through hole are adapted to the flanges.

[0015] As a further solution of the present invention: a first limiting hole and a second limiting hole are provided on the upper housing, the first limiting hole is used for inserting a limiting rod, and the diameter of the first limiting hole is larger than the outer diameter of the limiting rod, the second limiting hole is used for inserting a floating limiter, and there is a gap between the second limiting hole and the floating limiter.

[0016] As a further solution of the present invention: a limiting portion is provided on the floating limiter, and when the floating limiter rises, the limiting portion abuts against the lower surface of the upper housing.

[0017] As a further solution of the present invention: positioning posts and clamping grooves are provided on the inner surface of the lower housing, the V-shaped limiter is inserted on the positioning posts and can rotate around them; the floating limiter is inserted into the clamping grooves, a limiting post is provided in the clamping grooves, the spring is sleeved on the limiting post or placed in a through hole on the limiting post, and the length of the spring is greater than the length of the limiting post.

[0018] As a further solution of the present invention: the working position of the crankshaft is located within the V-shaped opening of the V-shaped limiter, and a dial is provided on the crankshaft.

[0019] In a second aspect, the present invention provides a method for disassembling and assembling bolts in a narrow space, using the above torque transmission wrench based on toothed belt drive, which includes the following steps:

[0020] Select a first gear that matches the specifications of a ratchet wrench or a torque wrench according to the usage requirements;

[0021] Select a second gear that matches the specifications of a bolt head or a nut according to the usage requirements;

[0022] Select the length of the toothed belt and the center distance between the first gear and the second gear that match the construction space according to the usage requirements;

[0023] Combine the above torque transmission wrench based on toothed belt drive according to the usage requirements;

[0024] The operator clamps a ratchet wrench or a torque wrench in the square hole of the first gear, and clamps the bolt head or nut in the narrow space in the plum blossom hole of the second gear.

[0025] Turn the direction switch to select the torque direction.

[0026] Use a ratchet wrench or a torque wrench to rotate the first gear. Driven by the toothed belt, the second gear rotates, realizing the torque transmission of the ratchet wrench or the torque wrench to the bolt head or nut until the bolt is disassembled or assembled.

[0027] The beneficial effects of this application are as follows:

[0028] 1. The torque transmission wrench based on toothed belt drive of this application can select different specifications of the first gear, the second gear, the length of the toothed belt, the center distance between the first gear and the second gear, and the housing according to different usage requirements.

[0029] 2. In the torque transmission wrench based on toothed belt drive of this application, the first gear and the second gear can realize fast and stable torque transmission under the drive of the toothed belt, making the disassembly and assembly of bolts convenient.

[0030] 3. In the torque transmission wrench based on toothed belt drive of this application, the ratchet wrench or torque wrench at the open space and the bolt head or nut in the narrow space are rotationally linked through the toothed belt, avoiding the problem that the ratchet wrench or torque wrench cannot be operated in the narrow space, reducing the disassembly and assembly work of the construction passage, and improving the work efficiency.

[0031] 4. In the torque transmission wrench based on toothed belt drive of this application, the torque direction is controlled by a floating limiter and a direction switch, realizing the integration of disassembly and assembly functions and reducing the types of tools.

[0032] The following further describes this application in detail with reference to the accompanying drawings of the embodiments. Description of the Drawings

[0033] Figure 1 It is a structural schematic diagram of a torque transmission wrench based on toothed belt drive;

[0034] Figure 2 It is a structural assembly schematic diagram of a torque transmission wrench based on toothed belt drive;

[0035] Figure 3 It is a structural schematic diagram of the direction selection part in a torque transmission wrench based on toothed belt drive.

[0036] Description of the numbers in the figure: 1. Limit rod; 2. Direction toggle switch; 3. Upper housing; 4. Crankshaft; 5. V-shaped limiter; 6. Floating limiter; 7. First spring; 8. Second spring; 9. Toothed belt; 10. First gear; 11. Second gear; 12. Lower housing. Detailed implementation mode

[0037] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0038] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0039] The following is combined with the attached Figures 1-3 The embodiments of the present invention will be described in detail.

[0040] Embodiment 1

[0041] The present invention provides a torque transmission wrench based on toothed belt transmission, which includes:

[0042] A housing for providing structural support for the direction selection part and the torque transmission part;

[0043] The torque transmission part includes a first gear 10 and a second gear 11, which are linked by a toothed belt 9; the first gear 10 rotates under the action of an external force, and drives the second gear 11 to rotate through the toothed belt 9 to achieve torque transmission. The shown torque transmission part is used to transmit the torque applied by a ratchet wrench or a constant torque wrench in an open space to a bolt in a narrow space. The length of the toothed belt 9 and the center distance between the first gear 10 and the second gear 11 can be customized according to the use environment to meet different space use requirements.

[0044] A direction selection part is used to limit the torque direction. The direction toggle switch 2 and the crankshaft 4 are connected in series through the limit rod 1. Mounting holes are provided on the direction toggle switch 2 and the crankshaft 4, and the two are connected in series and fixed through the limit rod 1. The V-shaped limiter 5 is inserted into the housing. The rotation of the direction toggle switch 2 drives the crankshaft 4 to toggle the V-shaped limiter 5, thereby restricting the rotation direction of the first gear 10.

[0045] During use, the second gear 11 is fixed with an opening on the bolt head in a narrow space, and a ratchet wrench or a torque wrench is clamped at the opening of the first gear 10 in an open space. The torque direction is selected through the direction selection part, and the first gear 10 is rotated with a ratchet wrench or a torque wrench. The second gear 11 rotates accordingly driven by the toothed belt 9, realizing torque transmission.

[0046] The direction selection part further includes a floating limiter 6 for limiting the direction toggle switch 2. The floating limiter 6 is inserted into the housing, and a spring is provided between the floating limiter 6 and the housing. The direction toggle switch 2 drives the crankshaft 4 to rotate under the fixing action of the limit rod 1. The crankshaft 4 pushes the V-shaped limiter 5 to swing to control the rotation direction of the square hole gear and control the torque direction. The floating limiter 6 has a limiting effect on the direction toggle switch 2 under the support of the spring.

[0047] The housing includes an upper housing 3 and a lower housing 12 that can be fitted together up and down. The inner cavity of the housing is adapted to the toothed belt 9.

[0048] Flanges are provided on both sides of the first gear 10 and the second gear 11. A square hole adapted to the plug of a ratchet wrench or a torque wrench is provided on the first gear 10, and a plum blossom hole adapted to the bolt head is provided on the second gear 11. The central opening of the first gear 10 can be customized according to the specifications of a ratchet wrench or a torque wrench to meet the usage requirements of different tool combinations. The central opening of the second gear 11 can be customized according to the bolt specifications to meet the usage requirements of different bolt specifications.

[0049] First through holes and second through holes are provided on the housing at positions corresponding to the first gear 10 and the second gear 11. The first through holes and the second through holes are adapted to the flanges.

[0050] A first limit hole and a second limit hole are provided on the upper housing 3. The first limit hole is used for inserting the limit rod 1, and the diameter of the first limit hole is larger than the outer diameter of the limit rod 1. The second limit hole is used for inserting the floating limiter 6, and there is a gap between the second limit hole and the floating limiter 6.

[0051] A limiting part is provided on the floating limiter 6. When the floating limiter 6 rises, the limiting part abuts against the lower surface of the upper housing 3.

[0052] Positioning posts and clamping grooves are provided on the inner surface of the lower housing 12. The V-shaped limiter 5 is inserted onto the positioning posts and can rotate around them. The floating limiter 6 is inserted into the clamping grooves. Limiting posts are provided in the clamping grooves. The spring is sleeved on the limiting posts or placed in the through holes on the limiting posts. The length of the spring is greater than that of the limiting posts. There are two limiting posts, and the springs include a first spring 7 and a second spring 8. The floating limiter 6 moves up and down along the second limiting hole on the upper housing 3 through the spring, playing a role in limiting the direction-changing toggle switch 2.

[0053] The working position of the crankshaft 4 is located within the V-shaped opening of the V-shaped limiter 5. A paddle is provided on the crankshaft 4. The V-shaped limiter 5 is driven by the crankshaft 4 to swing along the positioning posts of the lower housing 12 and is clamped into the tooth grooves of the first gear 10, realizing the limiting effect on the rotation direction of the first gear 10.

[0054] Embodiment 2

[0055] See the appendix Figure 1 , the present invention provides a torque transmission wrench based on toothed belt drive, which can ensure that bolts can be installed or torqued even in a narrow space where a ratchet wrench or a torque wrench cannot enter. It has a simple structure, is easy to use, and can stably achieve torque transmission in a narrow space.

[0056] Specifically, it includes: a direction selection part, a torque transmission part, and a housing. The torque transmission part is used to transmit the torque applied by a ratchet wrench or a torque wrench in an open space to the bolts in a narrow space. The torque transmission part includes a toothed belt 9, a first gear 10, and a second gear 11. The direction selection part is used to limit the torque direction. The direction selection part includes a limiting rod 1, a direction-changing toggle switch 2, a crankshaft 4, a V-shaped limiter 5, a floating limiter 6, a first spring 7, and a second spring 8. The housing is used to provide structural support for the direction selection part and the torque transmission part. The housing includes an upper housing 3 and a lower housing 12.

[0057] In this embodiment, the first gear 10 is provided with different opening sizes according to different specifications of ratchet wrenches or torque wrenches, the second gear 11 is provided with different opening sizes according to different specifications of bolts or nuts, and the length of the toothed belt 9 and the center distance between the first gear 10 and the second gear 11 are set with different sizes according to different construction spaces, which can effectively meet the disassembly and assembly requirements of various bolts or nuts in various narrow spaces.

[0058] In use, fix the second gear 11 with a hole by a bolt head in a narrow space, clamp a ratchet wrench or a torque wrench on the hole of the first gear 10 in an open space, select the torque direction through the direction selection part, turn the first gear 10 with a ratchet wrench or a torque wrench, and the second gear 11 will rotate accordingly driven by the toothed belt 9 to achieve torque transmission.

[0059] Embodiment 3

[0060] The present invention provides a method for disassembling and assembling bolts in a narrow space. Using the above-mentioned torque transmission wrench based on toothed belt transmission, it includes the following steps:

[0061] Select a first gear that matches the specifications of a ratchet wrench or a torque wrench according to the usage requirements;

[0062] Select a second gear that matches the specifications of a bolt head or a nut according to the usage requirements;

[0063] Select the length of the toothed belt and the center distance between the first gear and the second gear that match the construction space according to the usage requirements;

[0064] Combine the above-mentioned torque transmission wrench based on toothed belt transmission according to the usage requirements;

[0065] The operator clamps a ratchet wrench or a torque wrench in the square hole of the first gear, and clamps the bolt head or nut in the narrow space in the plum blossom hole of the second gear;

[0066] Press the floating limiter and turn the direction toggle switch to select the torque direction;

[0067] Use a ratchet wrench or a torque wrench to turn the first gear. Driven by the toothed belt, the second gear rotates to achieve the torque transmission of the ratchet wrench or the torque wrench to the bolt head or nut until the bolt is disassembled or assembled.

[0068] Thus, the purpose of the present invention is achieved.

[0069] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A torque transmission wrench based on toothed belt drive, characterized in that, Comprising: A housing for providing structural support to the direction selection part and the torque transmission part; A torque transmission part, which includes a first gear and a second gear, and the two are linked by a toothed belt; A direction selection part for limiting the torque direction, connecting the direction toggle switch and the crankshaft in series through a limiting rod, plugging a V-shaped limiter on the housing, and driving the crankshaft to toggle the V-shaped limiter by rotating the direction toggle switch, thereby restricting the rotation direction of the first gear.

2. The torque transmission wrench based on a toothed belt drive according to claim 1, characterized in that The direction selection part further includes a floating limiter for limiting the direction toggle switch. The floating limiter is plugged on the housing, and a spring is arranged between the floating limiter and the housing.

3. The torque transmission wrench based on a toothed belt drive according to claim 2, characterized in that, The housing includes an upper housing and a lower housing that can be fitted together up and down, and the inner cavity of the housing is adapted to the toothed belt.

4. The torque transmission wrench based on a toothed belt drive according to claim 3, characterized in that, Flanges are provided on both sides of the first gear and the second gear. A square hole adapted to a ratchet wrench or a plug of a torque wrench is provided on the first gear, and a plum blossom hole adapted to a bolt head is provided on the second gear.

5. The torque transmission wrench based on a toothed belt drive according to claim 4, characterized in that, A first through hole and a second through hole are provided on the housing at positions corresponding to the first gear and the second gear, and the first through hole and the second through hole are adapted to the flanges.

6. The torque transmission wrench based on a toothed belt drive according to claim 5, characterized in that, A first limiting hole and a second limiting hole are provided on the upper housing. The first limiting hole is used for plugging the limiting rod, and the diameter of the first limiting hole is larger than the outer diameter of the limiting rod. The second limiting hole is used for plugging the floating limiter, and there is a gap between the second limiting hole and the floating limiter.

7. The torque transmission wrench based on a toothed belt drive according to claim 6, characterized in that, A limiting part is provided on the floating limiter. When the floating limiter rises, the limiting part abuts against the lower surface of the upper housing.

8. The torque transmission wrench based on a toothed belt drive according to claim 7, wherein, Positioning posts and clamping grooves are provided on the inner surface of the lower housing. The V-shaped limiter is plugged on the positioning posts and can rotate around them; the floating limiter is plugged in the clamping grooves. A limiting post is provided in the clamping grooves, and the spring is sleeved on the limiting post or placed in a through hole on the limiting post. The length of the spring is greater than the length of the limiting post.

9. The torque transmission wrench based on a toothed belt drive according to claim 8, characterized in that, The working position of the crankshaft is located within the V-shaped opening of the V-shaped limiter, and a dial is provided on the crankshaft.

10. A method for disassembling and assembling bolts in a narrow space, characterized in that, Using the torque transmission wrench based on toothed belt drive according to any one of claims 1-9 above, includes the following steps: Select a first gear that matches the specifications of a ratchet wrench or a torque wrench according to the usage requirements; Select a second gear that matches the specifications of a bolt head or a nut according to the usage requirements; Select the length of the toothed belt and the center distance between the first gear and the second gear that match the construction space according to the usage requirements; Combine the torque transmission wrench based on toothed belt drive according to any one of claims 1-9 according to the usage requirements; The operator clamps the ratchet wrench or the torque wrench in the square hole of the first gear, and clamps the bolt head or nut in the narrow space in the plum blossom hole of the second gear; Rotate the direction toggle switch to select the torque direction; Use the ratchet wrench or the torque wrench to rotate the first gear. Driven by the toothed belt, the second gear rotates, realizing the transmission of the torque of the ratchet wrench or the torque wrench to the bolt head or nut until the bolt is disassembled.

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