wrench
By designing a wrench structure with detachable fasteners and operating handles, the problem of inconvenient operation when tightening tightly arranged gland heads with existing wrenches is solved, achieving efficient tightening and safe operation in confined spaces.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI ELECTRIC WIND POWER GRP CO LTD
- Filing Date
- 2025-07-18
- Publication Date
- 2026-07-17
AI Technical Summary
Existing wrenches are inconvenient to operate and ineffective when tightening tightly packed gland heads.
Design a wrench that includes a fixing part and an operating handle. The fixing part and the operating handle are detachably connected. The receiving groove of the fixing part is used to fit a threaded part. The operating handle is connected to the fixing part through a connecting hole. It is suitable for rotational operation in confined spaces.
It improves the ease of operation and tightening effect in confined spaces, increases the lever arm, reduces the driving force of the operating handle, and enhances safety.
Smart Images
Figure CN224509532U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a tool, and more particularly to a wrench. Background Technology
[0002] Currently, wind turbine generator sets have a large number of cables entering and exiting the converter cabinet and generator, especially the converter cabinets of large-capacity megawatt-level units, which have dozens of large-diameter cables entering and exiting the cabinet. Cable entry and exit from the cabinet are usually secured with glands to seal and fix the cables. After cable installation, the densely packed glands require specialized tools for tightening. Currently, large-diameter wrenches are mainly used for tightening, but these wrenches are bulky, require a lot of operating space, are inconvenient for tightening the glands, and the tightening effect is not ideal. Utility Model Content
[0003] The technical problem to be solved by this utility model is to overcome the defect of existing wrenches that are inconvenient to tighten the tightly arranged gland heads, and to provide a wrench.
[0004] The present invention solves the above-mentioned technical problems through the following technical solution:
[0005] A wrench includes a fixing member and an operating handle. The fixing member has multiple engaging surfaces that form a receiving groove with a front opening. The receiving groove is used to engage the outer side of a threaded component. The outer wall of the fixing member has a connecting hole extending radially along the threaded component, or the flange of the outer wall of the fixing member has a connecting hole extending axially along the threaded component. A plurality of connecting holes are arranged around the receiving groove. A first end of the operating handle is used to insert into the connecting hole, and a second end of the operating handle protrudes in a direction away from the fixing member.
[0006] In this design, the wrench includes a fixing component and an operating handle. The fixing component and operating handle are separate, allowing the fixing component to be fitted onto the threaded part first, and then the operating handle inserted into the connecting hole on the fixing component. The operating handle then rotates the fixing component to tighten or loosen the threaded part. Because the fixing component and operating handle are detachably connected, the fixing component can be easily fitted onto the threaded part, making it particularly suitable for scenarios where the threaded parts are densely packed and the operating space is limited. It also allows the operating handle to be used with different connecting holes for rotating the fixing component, improving ease of operation in confined spaces. Furthermore, the connecting hole is located on the outer wall of the fixing component or on the flange of the outer wall, facilitating the insertion of the operating handle either radially or axially along the threaded part, thus ensuring easy connection between the operating handle and the fixing component.
[0007] Preferably, the first end of the operating handle has two connecting posts arranged side by side, the axial direction of the connecting posts being at an angle to the length direction of the operating handle, and the two connecting posts being used to insert into any two of the connecting holes on the flange.
[0008] In this design, the axial direction of the connecting post is set at an angle to the length direction of the operating handle, causing the operating handle to extend and protrude away from the axial direction of the threaded part, facilitating the rotation of the operating handle. The two connecting posts of the operating handle are used to insert into the two connecting holes on the flange along the axial direction of the threaded part, improving the connection between the operating handle and the fixing part, and making it easier to rotate the fixing part through the operating handle.
[0009] Preferably, the axial direction of the connecting column is perpendicular to the length direction of the operating handle.
[0010] In this solution, the above-mentioned structural configuration is adopted so that the length direction of the operating handle is perpendicular to the axial direction of the threaded part, thereby increasing the lever arm and reducing the driving force of the operating handle.
[0011] Preferably, two connecting posts are provided on each side of the operating handle.
[0012] In this solution, the above-mentioned structural setup is adopted, with the addition of two backup connecting posts to prevent damage to the connecting posts and to facilitate the operation handle in selecting either side of the connecting post to connect with the fixing component.
[0013] Preferably, the distance between the two connecting posts is not less than twice the distance between adjacent connecting holes.
[0014] In this solution, by adopting the above-mentioned structural configuration, the width of the operating handle connected to the fixed part can be increased, the lever arm can be increased, and the force applied by the operating handle can be reduced.
[0015] Preferably, the operating handle also has a suspension hole for securing a fall arrest rope.
[0016] In this design, the aforementioned structural configuration facilitates the installation of a fall arrest rope within the suspension hole. When operating the control handle, the fall arrest rope can be secured to the hand to prevent the handle from falling, thus improving safety.
[0017] Preferably, the wrench further includes an extension handle, one end of which can be fitted onto the second end of the operating handle, and the extension handle is used to extend the operating handle.
[0018] In this solution, extending the handle onto the operating handle increases the length of the operating handle, thereby increasing the lever arm of the wrench and increasing the torque of the wrench when the same force is applied.
[0019] Preferably, a plurality of the connecting holes are evenly spaced around the receiving groove on the outer side wall or the flange of the outer side wall.
[0020] In this solution, the above-mentioned structural design allows the operating handle to be disassembled from the fixing part if it is obstructed after being rotated to a certain angle. Then, the operating handle can be inserted into the connection hole that will not be obstructed before rotation can be performed. This is especially suitable for operating the operating handle in confined spaces.
[0021] Preferably, there are multiple operating handles, and the multiple operating handles can be inserted into different connecting holes along the circumferential direction of the fixing member.
[0022] In this solution, multiple operating handles are inserted into different connection holes simultaneously, which allows multiple operating handles to apply force to the fixing component at different positions at the same time, thereby increasing the torque of the fixing component.
[0023] Preferably, the receiving groove is half of a regular hexagonal structure.
[0024] In this solution, the above-mentioned structural configuration is adopted so that the shape of the receiving groove matches that of the hexagonal threaded part, making it convenient for the receiving groove to be fitted onto the outside of the hexagonal threaded part and improving the connection effect.
[0025] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this utility model.
[0026] The significant advantages of this invention are as follows: The wrench includes a fixing component and an operating handle, which are separately positioned. This allows for easy placement of the fixing component's receiving groove onto the outside of the threaded component, followed by insertion of the operating handle into the connecting hole on the fixing component. The operating handle then rotates the fixing component to tighten or loosen the threaded component. Because the fixing component and operating handle are detachably connected, the fixing component can be easily fitted onto the outside of the threaded component, making it particularly suitable for scenarios where densely packed threaded components result in limited operating space. It also allows for the selection of different connecting holes for rotating the fixing component, improving ease of operation in confined spaces. Furthermore, the connecting hole is located on the outer wall of the fixing component or on its flanged outer wall, facilitating insertion of the operating handle either radially or axially along the threaded component, thus ensuring a smooth connection between the operating handle and the fixing component. Attached Figure Description
[0027] Figure 1 This is a schematic diagram of the structure of the wrench in Embodiment 1 of this utility model. Figure 1 .
[0028] Figure 2 This is a schematic diagram of the structure of the wrench in Embodiment 1 of this utility model. Figure 2 .
[0029] Figure 3 This is a schematic diagram of the structure of the wrench in Embodiment 2 of this utility model. Figure 1 .
[0030] Figure 4 This is a schematic diagram of the structure of the wrench in Embodiment 2 of this utility model. Figure 2 .
[0031] Explanation of reference numerals in the attached figures:
[0032] Fastener 1
[0033] 11 Socket
[0034] Receiving slot 12
[0035] Connection hole 13
[0036] Flanged section 14
[0037] Operating handle 2
[0038] First end 21
[0039] Second end 22
[0040] Connecting column 23
[0041] Hanging hole 24 Detailed Implementation
[0042] The present invention will be described more clearly and completely below by way of embodiments and in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the embodiments described herein.
[0043] Example 1
[0044] like Figure 1 and Figure 2 As shown, this embodiment discloses a wrench, which includes a fixing member 1 and an operating handle 2. The fixing member 1 has multiple snap-fit surfaces 11, which form a receiving groove 12 with a front opening. The receiving groove 12 is used to snap the outer side of the threaded part. The outer side wall of the fixing member 1 is provided with a connecting hole 13 extending in the radial direction of the threaded part. A plurality of connecting holes 13 are arranged around the receiving groove 12. The first end 21 of the operating handle 2 is used to insert into the connecting hole 13, and the second end 22 of the operating handle 2 extends and protrudes in a direction away from the fixing member 1.
[0045] like Figure 1 and Figure 2As shown, in this embodiment, the wrench includes a fixing member 1 and an operating handle 2. The fixing member 1 and the operating handle 2 are separately arranged, which facilitates first fitting the receiving groove 12 of the fixing member 1 onto the outside of the threaded part, and then inserting the operating handle 2 into the connecting hole 13 on the fixing member 1. The operating handle 2 drives the fixing member 1 to rotate, thereby tightening or loosening the threaded part. Since the fixing member 1 and the operating handle 2 are detachably connected, it is convenient for the fixing member 1 to be fitted onto the outside of the threaded part, which is especially suitable for scenarios where the operating space is narrow due to the dense arrangement of threaded parts. It also makes it convenient for the operating handle 2 to select different connecting holes 13 to rotate the fixing member 1, which is suitable for rotating the operating handle 2 in a narrow space, improving the convenience of operation. At the same time, the connecting hole 13 is set on the outer side wall of the fixing member 1, which facilitates the insertion of the operating handle 2 along the radial direction of the threaded part, making it easy for the operating handle 2 to connect with the fixing member 1.
[0046] like Figure 1 and Figure 2 As shown, the first end 21 of the operating handle 2 has two connecting posts 23 arranged side by side. The axial direction of the connecting posts 23 is set at an angle to the length direction of the operating handle 2. The two connecting posts 23 are used to insert into any two connecting holes 13 on the flange 14. The axial direction of the connecting posts 23 is set at an angle to the length direction of the operating handle 2, causing the operating handle 2 to extend and protrude away from the axial direction of the threaded part, which facilitates the rotation of the operating handle 2. The two connecting posts 23 of the operating handle 2 are used to insert into the two connecting holes 13 on the flange 14 along the axial direction of the threaded part, which improves the connection effect between the operating handle 2 and the fixing part 1, and facilitates the rotation of the fixing part 1 by operating the operating handle 2.
[0047] like Figure 1 and Figure 2 As shown, the axial direction of the connecting column 23 is perpendicular to the length direction of the operating handle 2, so that the length direction of the operating handle 2 is perpendicular to the axial direction of the threaded part, thereby increasing the lever arm and reducing the driving force of the operating handle 2.
[0048] like Figure 1 and Figure 2 As shown, two connecting posts 23 are provided on each side of the operating handle 2. The two additional connecting posts 23 are a backup to prevent damage to the connecting posts 23 and to facilitate the operating handle 2 to select either side of the connecting post 23 to connect with the fixing piece 1.
[0049] The distance between the two connecting posts 23 is not less than twice the distance between adjacent connecting holes 13, which makes it convenient for the two connecting posts 23 to be inserted into the two connecting holes 13 respectively. This increases the width of the operating handle 2 connected to the fixing member 1, increases the lever arm, and reduces the force applied by the operating handle 2.
[0050] like Figure 1 and Figure 2As shown, the operating handle 2 also has a suspension hole 24 for securing a fall arrest rope. The suspension hole 24 on the operating handle 2 facilitates the threading of the fall arrest rope through it. When operating the operating handle 2, the fall arrest rope can be tied to the hand to prevent the operating handle 2 from falling, thus improving safety.
[0051] The wrench also includes an extension handle (not shown in the figure). One end of the extension handle can be fitted onto the second end 22 of the operating handle 2. The extension handle is used to extend the operating handle 2. In use, the extension handle is fitted onto the operating handle 2, which increases the length of the operating handle 2, thereby increasing the lever arm of the wrench. When the same force is applied, the torque of the wrench can be increased.
[0052] like Figure 1 and Figure 2 As shown, several connecting holes 13 are evenly spaced around the receiving groove 12 on the outer side wall, so that if the operating handle 2 is interfered with after being rotated to a certain angle, the operating handle 2 can be disassembled from the fixing part 1, and then the operating handle 2 can be inserted into the connecting hole 13 that will not be interfered with, and then the rotation operation can be performed, so that the operating handle 2 can be operated in a narrow space.
[0053] like Figure 1 and Figure 2 As shown, the receiving groove 12 is half of a regular hexagonal structure, so that the receiving groove 12 matches the shape of the hexagonal threaded part, making it convenient for the receiving groove 12 to be fitted onto the outside of the hexagonal threaded part, thus improving the connection effect.
[0054] Of course, in other embodiments, the structure of the receiving slot can be configured according to the user's needs.
[0055] In this embodiment, there are multiple operating handles 2, which can be inserted into different connecting holes 13 along the circumferential direction of the fixing member 1. In use, multiple operating handles 2 are simultaneously inserted into different connecting holes 13, which makes it convenient for multiple operating handles 2 to apply force to the fixing member 1 at different positions at the same time, thereby increasing the torque of the fixing member 1.
[0056] Example 2
[0057] like Figure 3 and Figure 4As shown, this embodiment is basically the same as embodiment 1, except that: this embodiment discloses a wrench, which includes a fixing member 1 and an operating handle 2. The fixing member 1 has multiple snap-fit surfaces 11, which form a receiving groove 12 with a front opening. The receiving groove 12 is used to snap the outer side of the threaded part. The flange portion 14 of the outer wall of the fixing member 1 is provided with a connecting hole 13 extending along the axial direction of the threaded part. Several connecting holes 13 are arranged around the receiving groove 12. The first end 21 of the operating handle 2 is used to insert into the connecting hole 13, and the second end 22 of the operating handle 2 extends and protrudes in a direction away from the fixing member 1.
[0058] like Figure 3 and Figure 4 As shown, in this embodiment, the wrench includes a fixing member 1 and an operating handle 2. The fixing member 1 and the operating handle 2 are separately arranged, which facilitates first fitting the receiving groove 12 of the fixing member 1 onto the outside of the threaded part, and then inserting the operating handle 2 into the connecting hole 13 on the fixing member 1. The operating handle 2 drives the fixing member 1 to rotate, thereby tightening or loosening the threaded part. Since the fixing member 1 and the operating handle 2 are detachably connected, it is convenient for the fixing member 1 to be fitted onto the outside of the threaded part, which is especially suitable for scenarios where the operating space is narrow due to the dense arrangement of threaded parts. It also makes it convenient for the operating handle 2 to select different connecting holes 13 to rotate the fixing member 1, which is suitable for rotating the operating handle 2 in a narrow space and improves the convenience of operation. At the same time, the connecting hole 13 is set on the flange 14 of the outer side wall of the fixing member 1, which facilitates the insertion of the operating handle 2 along the axial direction of the threaded part and facilitates the connection between the operating handle 2 and the fixing member 1.
[0059] like Figure 3 and Figure 4 As shown, several connecting holes 13 are evenly spaced around the receiving groove 12 on the flange portion 14 of the outer wall. This allows the operating handle 2 to be disassembled from the fixing part 1 if it is obstructed after being rotated to a certain angle. Then, the operating handle 2 can be inserted into the connecting hole 13 that will not be obstructed, and then the rotation operation can be performed. This is used for operating the operating handle 2 in a narrow space.
[0060] In the description herein, it should be understood that the terms "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0061] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.
Claims
1. A wrench, characterized in that, The wrench includes a fixing member and an operating handle. The fixing member has multiple engaging surfaces that form a receiving groove with a front opening. The receiving groove is used to engage the outer side of a threaded component. The outer wall of the fixing member is provided with a connecting hole extending in the radial direction of the threaded component, or the flange of the outer wall of the fixing member is provided with a connecting hole extending in the axial direction of the threaded component. A plurality of connecting holes are arranged around the receiving groove. The first end of the operating handle is used to insert into the connecting hole, and the second end of the operating handle protrudes in a direction away from the fixing member.
2. The wrench of claim 1, wherein The first end of the operating handle has two connecting posts arranged side by side. The axial direction of the connecting posts is set at an angle to the length direction of the operating handle. The two connecting posts are used to insert into any two connecting holes on the flange.
3. The wrench of claim 2, wherein, The axial direction of the connecting column is perpendicular to the length direction of the operating handle.
4. The wrench of claim 2, wherein, Two connecting posts are respectively provided on both sides of the operating handle.
5. The wrench of claim 2, wherein, The distance between the two connecting posts is not less than twice the distance between adjacent connecting holes.
6. The wrench of claim 1, wherein, The operating handle also has a suspension hole for securing a fall arrest rope.
7. The wrench of claim 1, wherein The wrench also includes an extension handle, one end of which can be fitted onto the second end of the operating handle, and the extension handle is used to extend the operating handle.
8. The wrench of claim 1, wherein, A plurality of the connecting holes are evenly spaced around the receiving groove on the outer side wall or the flange of the outer side wall.
9. The wrench of claim 1, wherein, The number of operating handles is multiple, and the multiple operating handles can be respectively inserted into different connecting holes along the circumferential direction of the fixing member.
10. The wrench of any one of claims 1-9, wherein, The receiving groove is half of a regular hexagonal structure.