Electric wrench

Abstract

The invention relates to the technical field of maintenance tools, in particular to an electric wrench which comprises a wrench body. The output shaft is arranged at the front end of the wrench body; the mounting disc is fixedly mounted at the front end of the output shaft; the telescopic mechanism can stretch out and draw back in the length direction, and one end is rotationally connected with the mounting disc; and the clamping mechanism is mounted at the other end of the telescopic mechanism. According to the electric wrench, time and labor are saved, the speed and efficiency of screwing a valve hand wheel are improved, and the labor cost is saved.

Description

Technical Field

[0001] The invention relates to the technical field of maintenance tools, and in particular to an electric wrench. Background Art

[0002] F-type wrenches are widely used in various valves. They can increase torque when manually tightening valves, making valves easier to tighten. Due to the complexity and diversity of valves in the power field, it is time-consuming and laborious to tighten some manual valves with F-type wrenches. Even when tightening a large manual valve, it takes half an hour to tighten a manual valve. In the long process, the labor cost is greatly increased and the maintenance of the equipment is delayed.

[0003] Therefore, how to improve the speed and efficiency of tightening valves with F-type wrenches and save manpower has become a technical problem that needs to be solved urgently by technical personnel in this field. Summary of the invention

[0004] The invention provides an electric wrench, which is used to solve the problem of how to improve the speed and efficiency of tightening a valve with an F-type wrench and save manpower.

[0005] The present invention provides an electric wrench, comprising: Wrench body; An output shaft is arranged at the front end of the wrench body; A mounting plate, fixedly mounted on the front end of the output shaft; A telescopic mechanism, capable of telescoping along the length direction, one end of which is rotatably connected to the mounting plate; The clamping mechanism is installed at the other end of the telescopic mechanism.

[0006] In some of these embodiments, the clamping mechanism is a V-shaped clamping jaw.

[0007] In some embodiments, the clamping mechanism comprises: Fixing components; A first clamping portion, slidably connected to the fixing assembly; A second clamping portion, slidably connected to the fixing assembly; A first transmission assembly, mounted on the fixing assembly, capable of driving the first clamping portion to rotate; A second transmission assembly, mounted on the fixing assembly, capable of driving the second clamping portion to rotate; The driver is installed on the fixed component and drives the first transmission component and the second transmission component to rotate.

[0008] In some embodiments, the first clamping portion and the second clamping portion are arc-shaped racks; When the first clamping portion and the second clamping portion move toward each other, the clamping mechanism is in an open state; When the first clamping portion and the second clamping portion move away from each other to an extreme position, the clamping mechanism is in a closed state.

[0009] In some embodiments, the first transmission assembly includes: A first transmission rod, one end of which is connected to the driver; The first output gear is fixedly connected to the other end of the first transmission rod and meshes with the arc-shaped rack of the first clamping portion.

[0010] In some embodiments, the second transmission assembly includes: A first bevel gear connected to the driver; A second bevel gear, arranged parallel to the first bevel gear; A toothed disc, two sides of which are respectively meshed with the first bevel gear and the second bevel gear; A second transmission rod, one end of which is fixedly connected to the second bevel gear; The second output gear is fixedly connected to the other end of the second transmission rod and meshes with the arc-shaped rack of the second clamping portion.

[0011] In some embodiments, the fixing assembly includes: Mounting plate; A support column, fixed to the mounting plate, with a bearing embedded inside; The support frame is fixed on the mounting plate and has a bearing embedded therein.

[0012] In some embodiments, the fixing assembly further comprises: A first fixing plate, fixed on the mounting plate, with a slide rail provided inside; The second fixing plate is detachably connected to the first fixing plate.

[0013] In some embodiments, the telescopic mechanism comprises: The first telescopic rod has a sliding groove arranged along the axial direction; A second telescopic rod, sleeved on the outer circumference of the first telescopic rod; A fixing ring, sleeved on the end of the second telescopic rod; The limiting portion is rotatably connected to the fixing ring and can abut against the sliding groove of the first telescopic rod.

[0014] In some embodiments, the number of the telescopic mechanism and the number of the clamping mechanism are both plural.

[0015] The beneficial effects of the present invention are as follows: 1. The electric wrench provided by the present invention is provided with an output shaft, a mounting plate, a telescopic mechanism and a clamping mechanism which are connected in sequence. The telescopic mechanism is convenient for adjusting the direction and angle of the output shaft and the spoke, and then the clamping mechanism is installed on the spoke of the valve handwheel. The clamping mechanism can firmly clamp and fix the spoke, and the clamping mechanism is driven to rotate by the rotation of the output shaft to realize the rotation of the spoke, which saves time and labor, improves the speed and efficiency of turning the valve handwheel, and saves labor costs; 2. The clamping mechanism provided by the present invention is designed to synchronously drive the first transmission component and the second transmission component by designing a driver, the first transmission component drives the first clamping part to rotate, and the second transmission component drives the second clamping part to rotate, the rotation directions of the first clamping part and the second clamping part are opposite, that is, the first clamping part and the second clamping part are synchronously controlled by a driver to move in the direction of approaching or moving away from each other, thereby realizing the opening or closing of the clamping mechanism; and the first clamping part and the second clamping part are designed to be arc-shaped, which can better adapt to the spokes, embed the spokes into the area enclosed by the first clamping part and the second clamping part, and then firmly clamp the spokes to prevent the spokes from slipping out of the clamping mechanism when the electric wrench is rotated. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of an electric wrench of the present invention; Figure 2 It is a partial enlarged view of a clamping mechanism in an electric wrench of the present invention; Figure 3 It is a schematic diagram of the overall structure of a clamping mechanism in an electric wrench of the present invention; Figure 4 It is a structural schematic diagram of some specific embodiments of a telescopic mechanism in an electric wrench of the present invention; Figure 5 yes Figure 4 The structural schematic diagrams of some specific embodiments of the limiting part shown; Figure 6 It is a schematic diagram of the spoke assembly of the clamping mechanism and the valve handwheel.

[0017] In the accompanying drawings, 1. wrench body; 2. mounting plate; 3. telescopic mechanism; 31. first telescopic rod; 311. slide groove; 32. second telescopic rod; 33. fixing ring; 34. limiting part; 4. clamping mechanism; 41. V-shaped clamping claw; 42. fixing assembly; 421. mounting plate; 422. support column; 423. support frame; 424. first fixing plate; 425. second fixing plate; 426. slide rail; 43. first clamping part; 44. second clamping part; 45. first transmission assembly; 451. first transmission rod; 452. first output gear; 46. second transmission assembly; 461. first bevel gear; 462. second bevel gear; 463. toothed disc; 464. second transmission rod; 465. second output gear; 47. driver; 5. valve handwheel; 51. spoke. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are 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 ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] As described in the background technology, it is time-consuming and laborious to tighten some manual valves with a traditional F-type wrench. Even when tightening a large manual valve, it takes half an hour to tighten a manual valve. In the long process, the labor cost is greatly increased and the maintenance work of the equipment is delayed. Therefore, how to improve the speed and efficiency of tightening valves with an F-type wrench and save manpower has become a technical problem that needs to be solved urgently by those skilled in the art.

[0020] To solve the above problems, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The present invention provides an electric wrench, comprising: a wrench body 1, an output shaft, a mounting disk 2, a telescopic mechanism 3 and a clamping mechanism 4, the output shaft is arranged at the front end of the wrench body 1, the mounting disk 2 is fixedly installed at the front end of the output shaft, the telescopic mechanism 3 can be telescoped along the length direction, one end of the telescopic mechanism 3 is rotatably connected to the mounting disk 2, and the other end is fixedly connected to the clamping mechanism 4.

[0021] During specific implementation, by adjusting the angle between the telescopic mechanism 3 and the mounting disk 2, as well as the length of the telescopic mechanism 3, the clamping mechanism 4 is clamped on the spoke 51 of the valve handwheel 5, the wrench body 1 is opened, the output shaft rotates, and the mounting disk 2 is driven to rotate. The mounting disk 2 drives the clamping mechanism 4 to rotate through the telescopic mechanism 3, and the clamping mechanism 4 drives the spoke 51 of the valve handwheel 5 to rotate, thereby realizing the opening or closing of the valve handwheel 5.

[0022] The electric wrench provided by the present invention is provided with an output shaft, a mounting plate 2, a telescopic mechanism 3 and a clamping mechanism 4 which are connected in sequence. The telescopic mechanism 3 is convenient for adjusting the direction and angle of the output shaft and the spoke 51, and then the clamping mechanism 4 is installed on the spoke 51 of the valve handwheel 5. The clamping mechanism 4 can firmly clamp and fix the spoke 51, and the clamping mechanism 4 is driven to rotate by the rotation of the output shaft to realize the rotation of the spoke 51, which saves time and labor, improves the speed and efficiency of turning the valve handwheel, and saves labor costs.

[0023] In some embodiments, the clamping mechanism 4 is a V-shaped clamping jaw 41. The V-shaped clamping jaw 41 is convenient for clamping on the spoke 51 to fix the spoke 51. When the output shaft rotates, the V-shaped clamping jaw 41 can drive the spoke 51 to rotate.

[0024] In some embodiments, the clamping mechanism 4 includes: a fixing assembly 42 and a driver 47 installed on the fixing assembly 42, a first transmission assembly 45, and a second transmission assembly 46. The first clamping portion 43 and the second clamping portion 44 are both slidably connected to the fixing assembly 42. The driver 47 drives the first transmission assembly 45 and the second transmission assembly 46 to rotate. The first transmission assembly 45 can drive the first clamping portion 43 to rotate, and the second transmission assembly 46 can drive the second clamping portion 44 to rotate. Preferably, the driver 47 is a motor, and the motor drives the first transmission assembly 45 and the second transmission assembly 46 to rotate, thereby driving the first clamping portion 43 and the second clamping portion 44 to rotate respectively, so as to realize the opening or closing of the clamping mechanism 4, and then realize the clamping of the spoke 51 by the clamping mechanism 4 and other operations.

[0025] In some embodiments, the first clamping portion 43 and the second clamping portion 44 are both arc-shaped racks, and preferably, the racks are distributed on the outer periphery of the arc. When the first clamping portion 43 and the second clamping portion 44 move in a direction approaching each other, the clamping mechanism 4 is in an open state. At this time, it is convenient to put the spoke 51 into the area enclosed by the first clamping portion 43 and the second clamping portion 44, and to remove the clamping mechanism 4 from the spoke 51; when the first clamping portion 43 and the second clamping portion 44 move in a direction away from each other to the extreme position, the clamping mechanism 4 is in a closed state, that is, the end of the first clamping portion 43 and the end of the second clamping portion 44 abut against each other, and can enclose a closed area. At this time, it is convenient to fix the spoke 51 in the closed area enclosed by the first clamping portion 43 and the second clamping portion 44, and then firmly clamp and fix the spoke 51 to prevent the spoke 51 from slipping out of the clamping mechanism 4 when the clamping mechanism 4 is rotated.

[0026] In some embodiments, the first transmission assembly 45 includes: a first transmission rod 451 and a first output gear 452, one end of the first transmission rod 451 is connected to the driver 47, and the other end is fixedly connected to the first output gear 452, and the first output gear 452 is meshed with the arc-shaped rack of the first clamping portion 43. In specific implementation, the driver 47 drives the first transmission rod 451 to rotate, and the first transmission rod 451 drives the first clamping portion 43 to rotate through the first output gear 452, thereby realizing the rotation opening and closing of the first clamping portion 43.

[0027] In some embodiments, the second transmission assembly 46 includes: a first bevel gear 461, a toothed disc 463, a second bevel gear 462, a second transmission rod 464 and a second output gear 465, the driver 47 is connected to the first bevel gear 461, the second bevel gear 462 is arranged parallel to the first bevel gear 461, the first bevel gear 461 is meshed with one side of the toothed disc 463, the second bevel gear 462 is meshed with the other side of the toothed disc 463, one end of the second transmission rod 464 is fixedly connected to the second bevel gear 462, and the other end is fixedly connected to the second output gear 465, and the second output gear 465 is meshed with the arc rack of the second clamping portion 44. During specific implementation, the driver 47 drives the first bevel gear 461 to rotate, and the first bevel gear 461 drives the second bevel gear 462 to rotate through the toothed disk 463, so that the rotation direction of the second bevel gear 462 is opposite to that of the first bevel gear 461, and the second bevel gear 462 drives the second output gear 465 to rotate through the second transmission rod 464, and the second output gear 465 drives the second clamping part 44 to rotate and open and close.

[0028] In some embodiments, the fixing assembly 42 includes: a mounting plate 421, a support column 422 and a support frame 423 fixed on the mounting plate 421, and bearings are embedded in the support column 422 and the support frame 423. The mounting plate 421 is fixedly connected to the end of the telescopic mechanism 3, the toothed disc 463 is rotatably mounted on the mounting plate 421 through the bearing and the support column 422, the second transmission rod 464 is rotatably mounted on the mounting plate 421 through the bearing and the support frame 423, and the first transmission rod 451 is embedded in the second transmission rod 464.

[0029] In some embodiments, the fixing assembly 42 further includes: an arc-shaped first fixing plate 424 and an arc-shaped second fixing plate 425 arranged in parallel, the first fixing plate 424 is fixed on the mounting plate 421, a slide rail 426 is provided inside, the first clamping portion 43 and the second clamping portion 44 are embedded in the slide rail 426, the first clamping portion 43 and the second clamping portion 44 can slide along the slide rail 426, and the second fixing plate 425 is detachably connected to the first fixing plate 424. By providing the first fixing plate 424 and the second fixing plate 425, the first clamping portion 43 and the second clamping portion 44 are embedded in the slide rail 426, so that the stability and reliability of the first clamping portion 43 and the second clamping portion 44 are improved, and when performing a rotation operation, the rigidity and reliability of the connection between the first clamping portion 43 and the second clamping portion 44 and the spoke 51 are improved, and the first clamping portion 43 and the second clamping portion 44 are prevented from being broken by force.

[0030] The clamping mechanism 4 provided by the present invention is designed with a driver 47 to synchronously drive the first transmission component 45 and the second transmission component 46. The first transmission component 45 drives the first clamping part 43 to rotate, and the second transmission component 46 drives the second clamping part 44 to rotate. The rotation directions of the first clamping part 43 and the second clamping part 44 are opposite, that is, the first clamping part 43 and the second clamping part 44 are synchronously controlled by a driver 47 to move in the direction of approaching or moving away from each other, thereby realizing the opening or closing of the clamping mechanism 4; and the first clamping part 43 and the second clamping part 44 are designed to be arc-shaped, which can better adapt to the spoke 51, and the spoke 51 is embedded in the area enclosed by the first clamping part 43 and the second clamping part 44, thereby firmly clamping the spoke 51 to prevent the spoke 51 from slipping out of the clamping mechanism 4 when the electric wrench is rotated.

[0031] In some embodiments, the telescopic mechanism 3 includes: a first telescopic rod 31 and a first telescopic rod 31 sleeved on the outer periphery of the first telescopic rod 31, the first telescopic rod 31 is provided with a slide groove 311 in the axial direction, and a fixing ring 33 is sleeved on the end of the second telescopic rod 32, and a limiting portion 34 is rotatably connected to the fixing ring 33, and the limiting portion 34 can resist the slide groove 311 of the first telescopic rod 31. Preferably, the limiting portion 34 is a cam. In specific implementation, when the length of the telescopic mechanism 3 needs to be fixed, the cam is rotated to make the side with thicker wall thickness of the cam resist the slide groove 311 of the first telescopic rod 31; when the length of the telescopic mechanism 3 needs to be adjusted, the cam is rotated to make the side with thinner wall thickness of the cam embedded in the slide groove 311 of the first telescopic rod 31, and based on the gap between the cam and the slide groove 311 at this time, the first telescopic rod 31 can be freely extended and retracted. By setting the telescopic mechanism 3, it is convenient to adjust the length of the telescopic mechanism 3 according to the distance between the wrench body and the spoke 51, and the operation is simple and convenient.

[0032] In some embodiments, the number of the telescopic mechanism 3 and the clamping mechanism 4 are both multiple, and the number of the telescopic mechanism 3 and the clamping mechanism 4 are the same. Preferably, the number of the telescopic mechanism 3 and the clamping mechanism 4 are both 3. The multiple telescopic mechanisms 3 and the clamping mechanisms 4 work together to clamp multiple spokes 51 for twisting operation, thereby preventing a single spoke 51 from being broken due to excessive force.

[0033] In some of the embodiments, the wrench body 1 includes a motor, a lithium battery, and a speed regulator. The lithium battery provides power for the motor, and the speed regulator is used to adjust the speed of the motor.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples" or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0038] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. An electric wrench, characterized in that: include: Wrench body; An output shaft is arranged at the front end of the wrench body; A mounting plate, fixedly mounted on the front end of the output shaft; A telescopic mechanism, capable of telescoping along the length direction, one end of which is rotatably connected to the mounting plate; The clamping mechanism is installed at the other end of the telescopic mechanism.

2. The electric wrench according to claim 1, characterized in that: The clamping mechanism is a V-shaped clamping claw.

3. The electric wrench according to claim 1, characterized in that: The clamping mechanism comprises: Fixing components; A first clamping portion, slidably connected to the fixing assembly; A second clamping portion, slidably connected to the fixing assembly; A first transmission assembly, mounted on the fixing assembly, capable of driving the first clamping portion to rotate; A second transmission assembly, mounted on the fixing assembly, capable of driving the second clamping portion to rotate; The driver is installed on the fixed component and drives the first transmission component and the second transmission component to rotate.

4. The electric wrench according to claim 3, characterized in that: The first clamping portion and the second clamping portion are both arc-shaped racks; When the first clamping portion and the second clamping portion move toward each other, the clamping mechanism is in an open state; When the first clamping portion and the second clamping portion move away from each other to an extreme position, the clamping mechanism is in a closed state.

5. The electric wrench according to claim 4, characterized in that: The first transmission assembly comprises: A first transmission rod, one end of which is connected to the driver; The first output gear is fixedly connected to the other end of the first transmission rod and meshes with the arc-shaped rack of the first clamping portion.

6. The electric wrench according to claim 4, characterized in that: The second transmission assembly comprises: A first bevel gear connected to the driver; A second bevel gear, arranged parallel to the first bevel gear; A toothed disc, two sides of which are respectively meshed with the first bevel gear and the second bevel gear; A second transmission rod, one end of which is fixedly connected to the second bevel gear; The second output gear is fixedly connected to the other end of the second transmission rod and meshes with the arc-shaped rack of the second clamping portion.

7. The electric wrench according to any one of claims 3 to 6, characterized in that: The fixing assembly comprises: Mounting plate; A support column, fixed to the mounting plate, with a bearing embedded inside; The support frame is fixed on the mounting plate and has a bearing embedded therein.

8. The electric wrench according to claim 7, characterized in that: The fixing assembly also includes: A first fixing plate, fixed on the mounting plate, with a slide rail provided inside; The second fixing plate is detachably connected to the first fixing plate.

9. The electric wrench according to any one of claims 1 to 6, characterized in that: The telescopic mechanism comprises: The first telescopic rod has a sliding groove arranged along the axial direction; A second telescopic rod, sleeved on the outer circumference of the first telescopic rod; A fixing ring, sleeved on the end of the second telescopic rod; The limiting portion is rotatably connected to the fixing ring and can abut against the sliding groove of the first telescopic rod.

10. The electric wrench according to any one of claims 1 to 6, characterized in that: The number of the telescopic mechanism and the number of the clamping mechanism are both multiple.

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