Adjustable limiting arm

Abstract

According to the technical scheme, the adjustable limiting arm comprises an arm plate, an adapter and a locking piece, a sleeving hole is formed in the arm plate, and a first strip-shaped hole is further formed in the arm plate; the adapter is connected into the first strip-shaped hole in a sliding mode and used for being connected with a workpiece with the downward extending length; and the locking piece is arranged on the adapter and is used for locking the position of the adapter in the first strip-shaped hole. Through the arm plate, the adapter and the locking piece, the adapter can slide along the first strip-shaped hole in the arm plate and can be additionally provided with a workpiece to form an adjustable limiting arm capable of being assembled in an adapter mode, the overall length and height of the limiting arm can be adjusted according to actual conditions, and the counter-force supporting requirements of the electric torque wrench in different scenes can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of electric torque wrench accessories, in particular to an adjustable limiting arm. Background Art

[0002] An electric torque wrench is a type of electric tool. It is a wrench driven by a motor. The principle of an electric torque wrench is to drive the gear to rotate through the motor, thereby driving the nut to rotate, thereby achieving the purpose of tightening the bolt.

[0003] When the electric torque wrench is working, it is equipped with a reaction arm of fixed length and height. When in use, the reaction arm is supported on the adjacent bolts or shell wall. Under the action of the reaction arm and the support point, the bolts can be loosened or tightened at the output end of the torque.

[0004] With regard to the above-mentioned prior art, since the size of the reaction arm is fixed, when the bolt interval is greater than the length of the reaction arm, or the support point is located at a position where the reaction arm cannot reach the height, the reaction arm will be unable to find a suitable support point, which results in limitations in its use. If an effective support point is required, it is necessary to weld a structural part on the reaction arm, which correspondingly extends its length or height, which is inconvenient. Utility Model Content

[0005] In view of this, it is necessary to provide an adjustable limit arm to solve the technical problem that the reaction arm in the prior art has fixed size and limitations in use.

[0006] In order to achieve the above technical purpose, the technical solution of the utility model provides an adjustable limit arm, including:

[0007] An arm plate, wherein the arm plate is provided with a fitting hole, and the arm plate is also provided with a first strip hole;

[0008] an adapter, the adapter being slidably connected in the first strip-shaped hole and used for connecting a workpiece extending downward; and

[0009] A locking piece is provided on the adapter and is used to lock the position of the adapter in the first strip-shaped hole.

[0010] Furthermore, a spline is arranged in the sleeve hole.

[0011] Furthermore, the adapter includes a screw, a limiting ring and a square column, wherein the screw and the square column are respectively arranged at the top and bottom ends of the limiting ring, wherein the screw is slidingly connected to the first strip hole, and the limiting ring is attached to the bottom of the arm plate.

[0012] Furthermore, the locking member includes a nut, which is threadedly connected to the screw rod and fits on the top of the arm plate.

[0013] Furthermore, the locking component also includes a gasket, which is sleeved on the screw rod and located between the nut and the opposite side of the arm plate.

[0014] Furthermore, it also includes an extension frame, the top of which is provided with a first square hole for snapping onto the square column, and the extension frame is in an L-shape.

[0015] Furthermore, it also includes an extension arm, on which a second square hole is formed, and the second square hole has the same size as the first square hole, and on which a second strip hole is formed, and the width of the second strip hole is equal to that of the first strip hole.

[0016] Furthermore, it also includes an anti-slipping piece, which is sleeved between the extension arm and the outer side of the arm plate to prevent the extension arm from being detached from the arm plate.

[0017] Furthermore, the anti-slip component includes a sleeve and a locking bolt. A screw hole is provided on the top of the sleeve. The locking bolt is threadedly connected in the screw hole and penetrates downward to fit tightly against the top end of the screw.

[0018] Furthermore, the inner top wall and the inner bottom wall of the sleeve are both provided with anti-slip pads.

[0019] Compared with the prior art, the utility model has the beneficial effects of: through the arm plate, the adapter and the locking part, wherein the adapter can slide along the first strip hole on the arm plate and can be equipped with a workpiece to form an adjustable and transferable assembled limit arm, the overall length and height of which can be adjusted according to actual conditions to adapt to the reaction force support requirements of the electric torque wrench in different scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional diagram of the structure of the adjustable limit arm according to the embodiment of the utility model;

[0021] Figure 2 It is a three-dimensional exploded view of the adjustable limit arm according to the embodiment of the utility model;

[0022] Figure 3 It is a structural schematic diagram of an adjustable limit arm equipped with an extension frame according to an embodiment of the utility model;

[0023] Figure 4 It is a structural exploded diagram of an adjustable limit arm equipped with an extension frame according to an embodiment of the utility model;

[0024] Figure 5It is a schematic diagram of the structure of an adjustable limit arm equipped with an extension arm according to an embodiment of the utility model;

[0025] Figure 6 It is a structural exploded diagram of the adjustable limit arm according to an embodiment of the utility model;

[0026] In the figure: 1, arm plate; 101, set hole; 102, first strip hole;

[0027] 2. Adapter; 21. Screw; 22. Limiting ring; 23. Square column;

[0028] 3. Locking piece; 31. Nut; 32. Washer;

[0029] 4. Extension frame; 401. First square hole;

[0030] 5. extension arm; 501. second square hole; 502. second strip hole;

[0031] 6. Anti-dropping piece; 61. Sleeve; 62. Locking bolt; 601. Screw hole;

[0032] 7. Electric torque wrench. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0034] like Figure 1-6 As shown, the utility model provides an adjustable limit arm, including an arm plate 1, an adapter 2 and a locking piece 3, the arm plate 1 is provided with a fitting hole 101, the fitting hole 101 is used to be fitted onto the electric torque wrench 7, and the arm plate 1 is also provided with a first strip hole 102, the first strip hole 102 is for the adapter 2 to move therein, and adjust the distance from the electric torque wrench 7; the adapter 2 is slidably connected in the first strip hole 102, and is used to connect the workpiece extending downward, adjust the overall height of the limit arm, and install the workpiece of corresponding length according to the needs, and connect it through the adapter, which has strong adaptability; the locking piece 3 is arranged on the adapter 2, and is used to lock the position of the adapter 2 in the first strip hole 102. In order to control the tightness of the position adjustment of the adapter 2, when the locking piece 3 is loosened, the adapter 2 can move along the first strip hole 102, and when the locking piece 3 is locked, the adapter 2 cannot move along the first strip hole 102.

[0035] It can be understood that the length between the arm plate 1 and the adapter 2 is the length of the traditional reaction arm, and the workpiece connected below the adapter 2 corresponds to the height of the traditional reaction arm, and its length range is adjustable, and the height can be adjusted according to the replacement of the workpiece, so that it can be adaptively adjusted according to the actual usage. Among them, the workpiece is a sleeve of a torque wrench. Since the position of the adapter 2 is adjustable, the sleeve on the adapter 2 can be connected to the adjacent bolt to form a more stable limiting effect.

[0036] The fitting hole 101 is provided with a spline for fitting onto the electric torque wrench 7 and preventing rotation.

[0037] It can be understood that on the existing torque wrench, a spline is provided near the outer circumference of the torque square shaft, which can be used to install the reaction arm, and the set hole 101 corresponds to this position for installing the limit arm.

[0038] In this embodiment, in order to have the functions of movement, adjustment and switching, the adapter 2 includes a screw 21, a limit ring 22 and a square column 23, and the screw 21 and the square column 23 are respectively arranged at the top and bottom ends of the limit ring 22, wherein the screw 21 is slidably connected to the first strip hole 102, the screw 21 passes through the first strip hole 102 from bottom to top, and can slide along the length direction of the first strip hole 102, the limit ring 22 is attached to the bottom of the arm plate 1, and the outer diameter of the limit ring 22 is larger than the width of the strip hole 102, thereby forming a bottom limit of the adapter 2.

[0039] Furthermore, the locking member 3 includes a nut 31, which is threadedly connected to the screw rod 21 and fits on the top of the arm plate 1, wherein the outer width of the nut 31 is greater than the width of the strip hole 102, thereby forming a top limit of the adapter 2. When the nut 31 is tightened, it can fit tightly against the upper surface of the arm plate 1, thereby cooperating with the limit ring 22 to lock the adapter 2 on the arm plate 1, otherwise, the adapter 2 is released.

[0040] The locking member 3 further includes a gasket 32, which is sleeved on the screw rod 21 and located between the nut 31 and the opposite side of the arm plate 1 to prevent the locked nut 31 from slipping and improve the locking stability.

[0041] It can be understood that the screw 21 on the adapter 2 can also be replaced by a square column, which is fitted on the front and rear side walls of the strip hole to prevent torsion. Correspondingly, the locking member 3 can be a bolt, with a hole opened on the top of the square column. The head of the bolt moves downward and fits tightly against the upper surface of the arm plate 1, forming an upper and lower locking with the limit ring 22 below the arm plate 1.

[0042] In this embodiment, the adjustable limit arm also includes an extension frame 4 to form a workpiece with a standard downward extension height range. A first square hole 401 is provided on the top of the extension frame 4 for snapping onto the square column 23 for easy transfer. The extension frame 4 is L-shaped to facilitate action on adjacent bolts.

[0043] In this embodiment, the adjustable limit arm also includes an extension arm 5, which is used to extend the overall length when the length of the arm plate 1 cannot meet the requirements. A second square hole 501 is provided on the extension arm 5, and the second square hole 501 is the same size as the first square hole 401. Similarly, it can be snapped onto the square column 23, and a second strip hole 502 is provided on the extension arm 5, and the second strip hole 502 is equal in width to the first strip hole 102. The adapter 2 and the locking member 3 can be installed, and the extension frame 4 can be further installed, or another extension arm 5 can be added, and the combinability is high.

[0044] In this embodiment, the adjustable limit arm also includes an anti-slip component 6, which is used to enhance the stability of the extension arm 5 after installation. The anti-slip component 6 is sleeved between the extension arm 5 and the outer side of the arm plate 1 to prevent the extension arm 5 from detaching from the arm plate 1.

[0045] Specifically, the anti-slip component 6 includes a sleeve 61 and a locking bolt 62. The sleeve 61 is sleeved between the extension arm 5 and the outer side of the arm plate 1, and a screw hole 601 is opened on the top of the sleeve 61. The locking bolt 62 is threadedly connected in the screw hole 601, and penetrates downward and fits tightly with the top of the screw rod 21 to form a sleeve position locking.

[0046] Wherein, the inner top wall and the inner bottom wall of the sleeve 61 are both provided with anti-slip pads.

[0047] The specific working process of the utility model is as follows: when in use, the position of the adapter 2 is adjusted according to the spacing between the bolts, and locked with the locking piece 3, and then the extension frame 4 is installed to achieve the effect of the reaction arm; when the length is insufficient, the adapter 2 can be slid along the first strip hole 102; when the length of the arm plate 1 cannot meet the spacing length between the bolts, the extension arm 5 is docked with the adapter 2, and the anti-dropping piece 6 is installed, and then the adapter 2 is installed in the second strip hole 502, and the extension frame 4 is docked; when the height cannot act on the wall panel or bolt below, the extension frame 4 is disassembled and replaced with an extension frame 4 that meets the height condition.

[0048] The entire workflow is completed, and the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0049] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. An adjustable limit arm, characterized in that: include: An arm plate, wherein the arm plate is provided with a fitting hole, and the arm plate is also provided with a first strip hole; An adapter, which is slidably connected in the first strip hole and is used to connect a workpiece extending downward, and the adapter comprises a screw, a limiting ring and a square column, wherein the screw and the square column are respectively arranged at the top and bottom ends of the limiting ring, wherein the screw is slidably connected to the first strip hole, and the limiting ring is attached to the bottom of the arm plate; A locking member, which is disposed on the adapter and is used to lock the adapter in position in the first strip-shaped hole; An extension arm, wherein a second square hole is formed on the extension arm, and a second strip hole is formed on the extension arm, and the width of the second strip hole is equal to that of the first strip hole; and An anti-slip component is sleeved between the extension arm and the outer side of the arm plate to prevent the extension arm from being detached from the arm plate. The anti-slip component includes a sleeve and a locking bolt. A screw hole is provided on the top of the sleeve. The locking bolt is threadedly connected in the screw hole and passes through downward to fit tightly against the top of the screw. The sleeve is stepped and has inner walls that abut against both sides of the extension arm and the wall plate, as well as the upper and lower surfaces of the wall plate.

2. The adjustable limit arm according to claim 1, characterized in that: A spline is arranged in the sleeve hole.

3. The adjustable limit arm according to claim 2, characterized in that: The locking member comprises a nut which is threadedly connected to the screw rod and affixed to the top of the arm plate.

4. The adjustable limit arm according to claim 3, characterized in that: The locking member also includes a gasket, which is sleeved on the screw rod and located between the nut and the opposite side of the arm plate.

5. The adjustable limit arm according to claim 4, characterized in that: It also includes an extension frame, a top of which is provided with a first square hole for being snapped onto the square column, and the extension frame is in an L-shape.

6. The adjustable limit arm according to claim 5, characterized in that: The second square hole has the same size as the first square hole.

7. The adjustable limit arm according to claim 6, characterized in that: The inner top wall and the inner bottom wall of the sleeve are both provided with anti-slip pads.

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