Ratchet wrench

Abstract

The utility model relates to a kind of ratchet wrench, including crank part and chuck part, the chuck part includes ratchet wrench head and sleeve, the sleeve and the ratchet wrench head detachably connect, the ratchet wrench head with the one end of the crank part is fixedly connected, and the middle part of the crank part is curved. By setting crank part and chuck part, chuck part is cooperated with nut in-depth narrow space, and curved crank part provides force lever, so that maintenance personnel can complete the disassembly of nut without entering the platform below narrow space;Chuck part uses the combination of ratchet wrench head and sleeve, so that sleeve can be replaced according to different models of nut, and using ratchet wrench head can complete the disassembly and installation of nut by rotating crank part, without repeatedly adjusting the cooperation of sleeve and nut, greatly improve work efficiency and operational flexibility, significantly reduce labor intensity and operation difficulty.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine maintenance technology, specifically to a ratchet wrench. Background Technology

[0002] Wind turbines require regular maintenance. The nacelle contains a lot of equipment and has limited space. In particular, the space between the nacelle platform and the yaw gear platform is extremely small. When repairing small parts such as the yaw timer, maintenance personnel need to crawl into the platform alone to replace the nuts. This can easily lead to collisions, scrapes, crushing, or squeezing with the yaw gear. The confined space makes operation difficult and poses certain safety hazards. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a ratchet wrench suitable for confined spaces.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A ratchet wrench, characterized in that it includes a crank part and a clamping head, the clamping head includes a ratchet wrench head and a sleeve, the sleeve and the ratchet wrench head are detachably connected, the ratchet wrench head is fixedly connected to one end of the crank part, and the middle part of the crank part is bent.

[0005] The beneficial effects of this utility model are as follows: by setting a crank part and a clamping head, the clamping head extends into the narrow space to engage with the nut, while the curved crank part provides a lever for applying force, allowing maintenance personnel to disassemble the nut without having to enter the narrow space below the platform; the clamping head adopts a combination of a ratchet wrench head and a socket, so that the socket can be changed according to different types of nuts. At the same time, the ratchet wrench head can be used to disassemble and install the nut by rotating the crank part, without repeatedly adjusting the fit between the socket and the nut, which greatly improves work efficiency and operational flexibility, and significantly reduces labor intensity and operational difficulty.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, the crank portion includes a first crank segment, a second crank segment, a third crank segment, a fourth crank segment, and a fifth crank segment that are fixedly connected in sequence, and the ratchet wrench head is fixedly connected to the fifth crank segment; the first crank segment and the second crank segment are perpendicular, the second crank segment and the third crank segment are perpendicular, the third crank segment is perpendicular to the fourth crank segment, the fourth crank segment and the fifth crank segment are perpendicular, the first crank segment, the third crank segment, and the fifth crank segment are parallel to each other, and the second crank segment and the fourth crank segment are parallel to each other.

[0008] The beneficial effects of adopting the above-mentioned further solution are: by setting the crank part to multiple segments, the curved crank part is suitable for use in complex structures or confined spaces. The vertical and parallel arrangement between the first, second, third, fourth and fifth crank segments can make the force transmission more stable, avoid torque loss caused by sudden angle changes, and at the same time ensure the overall structural symmetry and improve the grip balance.

[0009] Furthermore, the length of the second curved rod is greater than the length of the fourth curved rod.

[0010] The beneficial effects of adopting the above-mentioned further solution are: by setting the second section of the crank to a longer distance, a larger operating distance can be formed between the first section of the crank and the ratchet wrench head. When it is necessary to operate in a deep cavity or narrow space, the longer second section of the crank can easily reach a deeper position. At the same time, the second section of the crank, as the force application point, provides a longer lever arm, so that maintenance personnel can generate sufficient torque with less force, making the operation more labor-saving and convenient.

[0011] Furthermore, a first hand-held part is provided on the second section of the crank.

[0012] The beneficial effect of adopting the above-mentioned further solution is that by setting a first hand-holding part on the second section of the crank, it is convenient for maintenance personnel to grasp the first hand-holding part and turn it when tightening the nut, thereby completing the disassembly and installation of the nut.

[0013] Furthermore, the outer surface of the first handheld part is provided with an anti-slip component.

[0014] The beneficial effects of adopting the above-mentioned further solution are: by setting anti-slip parts on the outer surface of the first hand, the friction of the gripping force is enhanced, slippage is prevented, and operational safety is ensured; at the same time, the anti-slip parts can also improve the comfort of gripping and relieve hand fatigue.

[0015] Furthermore, a second hand-held portion is provided at the other end of the crank portion.

[0016] The beneficial effect of adopting the above-mentioned further solution is that by setting a second hand-held part at the other end of the crank, when tightening the nut, the sleeve engages with the nut and abuts against the nut. The maintenance personnel hold the second hand-held part with one hand for support and the first hand-held part with the other hand to rotate, thus cooperating to efficiently complete the disassembly and installation of the nut.

[0017] Furthermore, it also includes a handle connecting rod, one end of which is fixedly connected to the other end of the crank portion, and the other end of which is rotatably connected to the second hand-held portion.

[0018] The beneficial effect of adopting the above-mentioned further solution is that by setting a handle connecting rod, and the second hand holding part can rotate around the handle connecting rod, during the application of force, the maintenance personnel only need to hold the second hand holding part, without having to adjust their posture as the crank rotates, which greatly improves the flexibility and convenience of use.

[0019] Furthermore, the outer surface of the second hand grip is provided with anti-slip texture.

[0020] The beneficial effect of adopting the above-mentioned further solution is that by setting anti-slip texture on the outer surface of the second hand, the friction between the maintenance personnel's hand and the second hand is increased, ensuring that the hand remains stable during the application of force and avoiding the safety risks caused by slippage.

[0021] Furthermore, the second hand-held part and the sleeve are parallel to each other.

[0022] The beneficial effect of adopting the above-mentioned further solution is that by setting the second hand-held part parallel to the sleeve and the direction of force application consistent with the direction of the sleeve axis, the torque can be transmitted to the nut to the maximum extent, thereby reducing the loss of force.

[0023] Furthermore, the axes of the second hand-held part and the sleeve coincide.

[0024] The beneficial effects of adopting the above-mentioned further solution are: by setting the axis of the second hand-held part and the sleeve to coincide, the direction of force application is completely collinear with the direction of force on the sleeve, eliminating lateral force, making it easier for maintenance personnel to tighten nuts, reducing labor intensity, and improving work efficiency. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the ratchet wrench of this utility model;

[0026] Figure 2 This is a schematic diagram showing the usage state of a specific embodiment of the present invention.

[0027] The attached diagram lists the components represented by each number as follows:

[0028] 1. Platform; 2. Protrusion; 110. First section of crank; 120. Second section of crank; 121. First hand grip; 130. Third section of crank; 140. Fourth section of crank; 150. Fifth section of crank; 210. Ratchet wrench head; 220. Socket; 310. Second hand grip; 320. Handle connecting rod. Detailed Implementation

[0029] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0030] like Figures 1-2 As shown, this embodiment provides a ratchet wrench, characterized in that it includes a crank portion and a clamping head. The clamping head includes a ratchet wrench head 210 and a sleeve 220. The sleeve 220 and the ratchet wrench head 210 are detachably connected. The ratchet wrench head 210 is fixedly connected to one end of the crank portion, and the middle part of the crank portion is bent.

[0031] By incorporating a crank and a clamp head, the clamp head extends into a confined space to engage with the nut, while the curved crank provides a lever for applying force. This allows maintenance personnel to remove the nut without having to enter the confined space below the platform 1. The clamp head uses a combination of a ratchet wrench head 210 and a socket 220, allowing for the replacement of the socket 220 with different nut models. Simultaneously, the ratchet wrench head 210 can be used to remove and install the nut by rotating the crank, eliminating the need for repeated adjustments to the fit between the socket 220 and the nut. This significantly improves work efficiency and operational flexibility, and substantially reduces labor intensity and operational difficulty.

[0032] Based on any of the above technical solutions, the crank portion includes a first crank segment 110, a second crank segment 120, a third crank segment 130, a fourth crank segment 140, and a fifth crank segment 150 that are fixedly connected in sequence, and the ratchet wrench head 210 is fixedly connected to the fifth crank segment 150; the first crank segment 110 and the second crank segment 120 are perpendicular, the second crank segment 120 and the third crank segment 130 are perpendicular, the third crank segment 130 is perpendicular to the fourth crank segment 140, the fourth crank segment 140 and the fifth crank segment 150 are perpendicular, the first crank segment 110, the third crank segment 130 and the fifth crank segment 150 are parallel to each other, and the second crank segment 120 and the fourth crank segment 140 are parallel to each other.

[0033] By setting the crank section into multiple segments, the curved crank section is suitable for use in complex structures or confined spaces. The vertical and parallel arrangement between the first crank segment 110, the second crank segment 120, the third crank segment 130, the fourth crank segment 140, and the fifth crank segment 150 can make the force transmission more stable, avoid torque loss caused by sudden angle changes, and at the same time ensure the overall structural symmetry and improve the grip balance.

[0034] In a specific example, such as Figure 2As shown, the first crank segment 110 and the third crank segment 130 are respectively located at both ends of the second crank segment 120 and are oriented in the same direction. The fourth crank segment 140 is oriented towards the first crank segment 110 and is fixedly connected to one end of the third crank segment 130. A clearance space is formed between the second crank segment 120, the third crank segment 130, and the fourth crank segment 140. When the nut under the platform 1 is tightened, the sleeve 220 engages with the nut, and this clearance space cleverly avoids the protrusion 2 under the platform 1, thus allowing the nut to be tightened smoothly. In this example, the curved crank portion can extend into a narrow space and bypass the platform 1 to work on a complex work surface to remove the nut under the platform 1.

[0035] Based on any of the above technical solutions, the length of the second segment 120 is greater than the length of the fourth segment 140.

[0036] By setting the second crank 120 to a longer distance, a greater operating distance can be formed between the first crank 110 and the ratchet wrench head 210. When it is necessary to operate in a deep cavity or narrow space, the longer second crank 120 can easily reach a deeper position. At the same time, the second crank 120 serves as a force application point, providing a longer lever arm, which allows maintenance personnel to generate sufficient torque with less force, making operation more labor-saving and convenient.

[0037] Based on any of the above technical solutions, a first hand-held part 121 is provided on the second section of the curved rod 120.

[0038] Specifically, the first hand-held part 121 is a cylindrical section with a diameter larger than that of the second curved rod 120. Maintenance personnel use the first hand-held part 121 as the main point of force application.

[0039] By setting a first hand-held part 121 on the second section of the crank 120, maintenance personnel can easily grasp the first hand-held part 121 and turn it when tightening the nut, thereby completing the disassembly and installation of the nut.

[0040] Based on any of the above technical solutions, the outer surface of the first handheld part 121 is provided with an anti-slip component.

[0041] By providing anti-slip elements on the outer surface of the first hand grip 121, the friction of the grip is enhanced, preventing slippage and ensuring operational safety; at the same time, the anti-slip elements can also improve grip comfort and relieve hand fatigue.

[0042] Specifically, the anti-slip component is a rubber sleeve, which is fitted onto the outer surface of the first hand grip 121, or the outer surface of the first hand grip 121 is provided with textured protrusions, such as stripes, waves, or grid patterns, to increase the friction with the hand.

[0043] Based on any of the above technical solutions, a second hand-held part 310 is provided at the other end of the crank part.

[0044] By setting a second hand-held part 310 at the other end of the crank, when tightening the nut, the sleeve 220 engages with the nut and abuts against it. The maintenance personnel hold the second hand-held part 310 with one hand for support and the first hand-held part 121 with the other hand to rotate, thus cooperating to efficiently complete the disassembly and installation of the nut.

[0045] Based on any of the above technical solutions, a handle connecting rod 320 is also included, one end of which is fixedly connected to the other end of the crank portion, and the other end of which is rotatably connected to the second hand-held portion 310.

[0046] By setting a handle connecting rod 320, and allowing the second hand-held part 310 to rotate around the handle connecting rod 320, maintenance personnel only need to hold the second hand-held part 310 during the application of force, without having to adjust their posture as the crank rotates, which greatly improves the flexibility and convenience of use.

[0047] Based on any of the above technical solutions, the outer surface of the second hand grip 310 is provided with anti-slip texture.

[0048] By providing anti-slip texture on the outer surface of the second hand grip 310, the friction between the maintenance personnel's hand and the second hand grip 310 is increased, ensuring that the hand remains stable during the application of force and avoiding the safety risks caused by slippage.

[0049] Based on any of the above technical solutions, the second hand-held part 310 and the sleeve 220 are parallel to each other.

[0050] By setting the second hand-held part 310 parallel to the sleeve 220 and the direction of force application is consistent with the axial direction of the sleeve 220, the torque can be transmitted to the nut to the maximum extent, thereby reducing force loss.

[0051] Specifically, the first hand-held part 121, the second hand-held part 310, and the sleeve 220 are all parallel.

[0052] Based on any of the above technical solutions, the axes of the second hand-held part 310 and the sleeve 220 coincide.

[0053] By aligning the axes of the second handpiece 310 and the sleeve 220, the direction of force application is completely collinear with the direction of force received by the sleeve 220, eliminating lateral forces. This makes it easier for maintenance personnel to tighten nuts, reducing labor intensity and improving work efficiency.

[0054] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0056] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0057] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0058] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0059] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A ratchet wrench characterized by comprising: It includes a crank portion and a clamp head, the clamp head including a ratchet wrench head (210) and a sleeve (220), the sleeve (220) and the ratchet wrench head (210) are detachably connected, the ratchet wrench head (210) is fixedly connected to one end of the crank portion, and the middle part of the crank portion is bent.

2. The ratchet wrench of claim 1 wherein, The crank section includes a first crank segment (110), a second crank segment (120), a third crank segment (130), a fourth crank segment (140), and a fifth crank segment (150) that are fixedly connected in sequence. The ratchet wrench head (210) and the fifth crank segment (150) are fixedly connected. The first crank segment (110) and the second crank segment (120) are perpendicular, the second crank segment (120) and the third crank segment (130) are perpendicular, the third crank segment (130) and the fourth crank segment (140) are perpendicular, the fourth crank segment (140) and the fifth crank segment (150) are perpendicular, the first crank segment (110), the third crank segment (130) and the fifth crank segment (150) are parallel to each other, and the second crank segment (120) and the fourth crank segment (140) are parallel.

3. The ratchet wrench of claim 2 wherein, The length of the second segment (120) is greater than the length of the fourth segment (140).

4. The ratchet wrench of claim 3 wherein: The second section of the curved rod (120) is provided with a first hand-held part (121).

5. The ratchet wrench of claim 4 wherein, The outer surface of the first handheld part (121) is provided with an anti-slip component.

6. The ratchet wrench of claim 1 wherein, A second hand-held part (310) is provided at the other end of the crank part.

7. The ratchet wrench of claim 6 wherein, It also includes a handle connecting rod (320), one end of which is fixedly connected to the other end of the crank portion, and the other end of which is rotatably connected to the second hand-held portion (310).

8. A ratchet wrench according to claim 7, characterized in that, The outer surface of the second hand grip (310) is provided with anti-slip texture.

9. A ratchet wrench according to any one of claims 6-8, characterized in that The second hand-held part (310) and the sleeve (220) are parallel to each other.

10. The ratchet wrench of claim 9 wherein, The axes of the second hand-held part (310) and the sleeve (220) coincide.

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