Electric wrench extension rod

Abstract

The present application relates to an electric wrench extension rod, which includes a connecting device, which includes a mounting seat, a sleeve adapter flange, an outer sleeve, an input end flange and an extension rod, the extension rod is fixedly connected to the output shaft of the electric wrench to transmit the power of the electric wrench; the bolt sleeve fixing device includes a bolt sleeve fixing seat, an input shaft, an output shaft, a transmission member and an output end flange, the input shaft is fixedly connected to the extension rod, and the power transmitted by the extension rod is transmitted to the transmission member, the transmission member transmits the power to the output shaft, and transmits torque to the bolt sleeve, a nut sleeve is arranged on the nut sleeve fixing device, the nut sleeve and the bolt sleeve are docked by a locking mechanism, and the bolt is tightened by the torque transmitted by the electric wrench. The present application has the effect of completing the positioning of bolts and nuts and screw locking in a narrow space, and improving the positioning and alignment effect of bolts and nuts.

Description

Technical Field

[0001] The present application relates to the field of electric screwdrivers, and in particular to an electric wrench extension rod. Background Art

[0002] The electric drills currently available on the market can achieve the tightening and removal of bolts and nuts, but in narrow spaces and at long distances, human hands cannot effectively align the screw holes, cannot lock the screws, and cannot achieve the tightening and removal of bolts and nuts. The extension rods currently available on the market have a single function and can only achieve the axial extension function. The extension distance of the adapter with the corner function is generally less than 500mm, and it must be fixed by hand during operation to prevent the bolts or nuts from rotating. It cannot work in narrow areas with large depths.

[0003] For example, a two-section telescopic long-handled electric wrench. The main technical principle of this patent is to achieve the telescopic control of the bolts through the two-section telescopic long-handled electric wrench, so as to facilitate the installation of bolt extension and top-pushing metal embedded parts during the construction of the outer wall of the tunnel. Specifically, the wrench includes an electric wrench body, a cutter head, a fixing frame, a clamp and an extension rod, wherein a cutter head is provided at one end of the electric wrench body and a first power switch is provided at the other end. The fixing frame is set as a tubular structure and is sleeved on one end of the first power switch. The clamp is used to fasten the fixing frame to one end of the first power switch of the electric wrench body. The extension rod is set at the end of the fixing frame away from the electric wrench body, and the end of the extension rod away from the fixing frame is provided with a second power switch. The clamp is set as a semicircular structure, and fixing ears are provided at both ends. The fixing ears are provided with fixing holes. The fixing holes are used to install fixing bolts, and the fixing bolts fix the two clamps into one.

[0004] Although the above invention solves the problem of the electric wrench working in a narrow area with a large depth, it is difficult to complete the positioning of the bolts and nuts and the locking of the screws in a small space. Utility Model Content

[0005] In order to improve the positioning and alignment effect of bolts and nuts, the present application provides an electric wrench extension rod.

[0006] The electric wrench extension rod provided in this application adopts the following technical solution:

[0007] Extension rod for electric wrench, including

[0008] A connecting device, the connecting device includes a mounting seat, a sleeve adapter flange, an outer sleeve and an input end flange, one side of the mounting seat is fixedly connected to the output end of the wrench, and the other side is fixedly connected to the sleeve adapter flange, the outer sleeve is fixedly installed on the side of the sleeve adapter flange away from the mounting seat, and one side of the input end flange is fixedly connected to the outer sleeve, a transmission hole is provided in the center of the mounting seat, the sleeve adapter flange, the outer sleeve and the input end flange, and an extension rod is provided on the output shaft of the electric wrench, and the extension rod passes through the transmission hole to transmit power;

[0009] A bolt sleeve fixing device, the bolt sleeve fixing device comprises a bolt sleeve fixing seat, an input shaft, an output shaft, a transmission member and an output end flange, one end of the bolt sleeve fixing seat is fixedly connected to the input end flange and the other end is fixedly connected to the output end flange, the input shaft is fixedly connected to the extension rod, the transmission member is arranged inside the bolt sleeve fixing seat to transmit the input shaft torque to the output shaft, the output end flange is provided with a hole for the output shaft to pass through, the bolt sleeve is sleeved on the output shaft located outside the output end flange and is fixedly connected to the output shaft;

[0010] A nut sleeve fixing device, the nut sleeve fixing device comprising a nut sleeve fixing seat, the nut sleeve fixing seat is provided with a mounting hole for mounting the nut sleeve, the mounting hole coincides with the axis of the output shaft;

[0011] The locking mechanism comprises a guide rail connecting rod mounting seat fixedly connected to the output end flange and the mounting seat, a linear guide rail connecting rod is arranged on the guide rail connecting rod mounting seat, the linear guide rail connecting rod is parallel to the axis of the output shaft, the nut sleeve fixing seat is provided with a sliding hole for the linear guide rail connecting rod to move, a wire rope threading hole is arranged on the nut sleeve fixing seat, and a wire rope fixing hole coincident with the axis of the wire rope threading hole is arranged on the guide rail connecting rod mounting seat, a wire rope is arranged in the locking mechanism, passing through the wire rope threading hole and the wire rope fixing hole, and by pulling the wire rope, the nut sleeve fixing seat and the nut sleeve arranged above move toward the direction of the output shaft.

[0012] By adopting the above technical scheme, the extension rod transmits the wrench power to the input shaft, and then the transmission member transmits the power on the input shaft to the output shaft, and the bolt sleeve installed on the output shaft transmits the power to the bolt, and the nut is fixed in the nut sleeve on the nut sleeve fixing seat and aligned with the bolt. By pulling the wire rope passing through the wire rope threading hole and the wire rope fixing hole, the nut sleeve fixing seat moves toward the output shaft, the nut and bolt are connected, and the torque transmitted by the electric wrench completes the tightening of the bolt, which can achieve the positioning of the bolt and nut and the locking of the screws in a narrow space, thereby improving the positioning and alignment effect of the bolt and nut.

[0013] Preferably, the linear guide rail connecting rods are provided in two, and the wire rope threading hole and the wire rope fixing hole are provided in the middle position of the connecting line of the two linear guide rail connecting rods.

[0014] By adopting the above technical solution, two linear guide connecting rods are set, which is more stable when the nut sleeve fixing seat is pulled by the wire rope, and the positioning and alignment effect of the bolt and nut is further improved.

[0015] Preferably, a sliding bearing is provided at the sliding hole, and the linear guide connecting rod is slidingly connected to the sliding bearing.

[0016] By adopting the above technical solution and arranging a sliding bearing at the sliding hole, the friction loss and surface wear of the linear guide connecting rod can be greatly reduced.

[0017] Preferably, a return spring is arranged on the outer side of the linear guide connecting rod.

[0018] By adopting the above technical solution, after the torque transmitted by the electric wrench completes the tightening of the bolt, the wire rope is loosened, and the nut sleeve fixing seat can be reset by the reset spring arranged on the outside of the linear guide connecting rod. At this time, the bolts and nuts can be removed from the sleeve, and new bolts and nuts can be installed, so as to facilitate and quickly carry out the next set of installation and improve the installation speed.

[0019] Preferably, the end of the output shaft connected to the bolt sleeve is configured in a square shape.

[0020] By adopting the above technical solution, the end of the output shaft connected to the bolt sleeve is set to a square shape, which is convenient for fixing the bolt sleeve on the output shaft and convenient for the output shaft to better transmit the wrench torque.

[0021] Preferably, the transmission member is configured as two bevel gears of equal size and meshing with each other, and the two bevel gears are rotatably connected to two ends of the bolt sleeve fixing seat respectively.

[0022] By adopting the above technical solution, the torque of the electric wrench is converted into a 90-degree angle through two mutually meshing bevel gears. The 90-degree angle design can install bolts and nuts in corners and shielded locations.

[0023] Preferably, the length of the extension rod is adjustable.

[0024] By adopting the above technical solution, the length of the extension rod can be adjusted as needed, which is convenient for working in narrow areas with greater depth.

[0025] Preferably, the outer sleeve and the extension rod are used in combination as a set.

[0026] By adopting the above technical solution, the outer sleeve can fix the entire device and provide protection, without the need for hand support to prevent the entire device from rotating. At the same time, it protects the internal components and the operator's safety. By being matched with the extension rod, the device can be better protected.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. The extension rod transmits the wrench power to the input shaft, and then the transmission part transmits the power on the input shaft to the output shaft. The bolt sleeve installed on the output shaft transmits the power to the bolt. The nut is fixed in the nut sleeve on the nut sleeve fixing seat and aligned with the bolt. By pulling the wire rope passing through the wire rope threading hole and the wire rope fixing hole, the nut sleeve fixing seat moves toward the output shaft, and the nut and bolt are connected. The torque transmitted by the electric wrench completes the tightening of the bolt, which can realize the positioning and locking of the bolts and nuts in a narrow space, and improve the positioning and alignment effect of the bolts and nuts;

[0029] 2. Two linear guide rail links are set to facilitate more stability when the nut sleeve fixing seat is pulled by the wire rope, further improving the positioning and alignment effect of the bolts and nuts;

[0030] 3. After the torque transmitted by the electric wrench completes the tightening of the bolt, loosen the wire rope, and the nut sleeve fixing seat can be reset by the reset spring arranged on the outside of the linear guide connecting rod. At this time, the bolts and nuts can be removed from the sleeve, and new bolts and nuts can be installed, which is convenient and fast for the next set of installation and improves the installation speed;

[0031] 4. Through two meshing bevel gears, the torque of the electric wrench is converted into a 90-degree angle. The 90-degree angle design can install bolts and nuts in corners and obstructed locations. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the structure of the electric wrench extension rod of the present application.

[0033] Figure 2 yes Figure 1 A partial enlarged view.

[0034] Explanation of the reference numerals: 1. Connecting device; 11. Mounting seat; 12. Sleeve adapter flange; 13. Outer sleeve; 14. Input end flange; 15. Extension rod; 16. Transmission hole; 2. Bolt sleeve fixing device; 21. Bolt sleeve fixing seat; 22. Input shaft; 23. Output shaft; 24. Transmission member; 25. Output end flange; 3. Nut sleeve fixing device; 31. Nut sleeve fixing seat; 311. Mounting hole; 312. Sliding hole; 3121. Sliding bearing; 313. Threading hole; 4. Locking mechanism; 41. Guide rail connecting rod mounting seat; 411. Fixing hole; 42. Linear guide rail connecting rod; 43. Wire rope; 44. Reset spring. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-2 This application is described in further detail.

[0036] The present application embodiment discloses an electric wrench extension rod. Figure 1 The electric wrench extension rod includes a connecting device 1, a bolt sleeve fixing device 2, a nut sleeve fixing device 3 and a locking mechanism 4.

[0037] The connecting device 1 comprises a mounting seat 11 , a sleeve adapter flange 12 , an outer sleeve 13 , an input end flange 14 and an extension rod 15 .

[0038] Specifically, the extension rod 15 is fixedly connected to the output shaft of the electric wrench to transmit the power of the electric wrench. The mounting seat 11, the sleeve adapter flange 12, the outer sleeve 13 and the input end flange 14 are connected to the electric wrench in sequence, and a transmission hole 16 for the extension rod 15 to pass through is opened in the middle.

[0039] The length of the extension rod 15 can be adjusted and replaced as needed, which is convenient for working in narrow areas with greater depth. The sleeve is used in conjunction with the extension rod 15, and the outer sleeve 13 serves to fix the entire device and provide protection. There is no need to hold on to prevent the entire device from rotating, while protecting internal components and operator safety.

[0040] Reference Figure 2 The bolt sleeve fixing device 2 includes a bolt sleeve fixing seat 21, an input shaft 22, an output shaft 23, a transmission member 24 and an output end flange 25.

[0041] Specifically, the input shaft 22 is fixedly connected to the extension rod 15, and the power transmitted by the extension rod 15 is transmitted to the transmission member 24. The bolt sleeve fixing seat 21 is fixed on the input end flange 14, and the transmission member 24 is arranged inside it. The transmission member 24 is composed of two vertical bevel gears. The first bevel gear is fixedly connected to the input shaft 22, and the second bevel gear is connected to the input shaft 22 to transmit the power to the output shaft 23. The output end of the output shaft 23 is set to a square shape for convenient bolt sleeve installation. The output end flange 25 is fixedly set at one end of the output shaft 23 of the bolt sleeve fixing seat 21, and a hole is opened for the output shaft 23 to pass through.

[0042] Reference Figure 2 The nut sleeve fixing device 3 includes a nut sleeve fixing seat 31, and a mounting hole 311 for fixing and installing the nut sleeve is provided on the nut sleeve fixing seat 31. The nut sleeve is installed in the mounting hole 311, and the nut sleeve and the bolt sleeve are arranged opposite to each other.

[0043] Reference Figure 2 The locking mechanism 4 includes a guide rail connecting rod mounting seat 41, a linear guide rail connecting rod 42 and a wire rope 43, which are used to fit the nut sleeve and the bolt sleeve, and then fix the bolt and the nut.

[0044] Specifically, the guide rail connecting rod mounting seat 41 is fixedly connected to the output end flange 25 and is arranged on one side of the output shaft 23. Two parallel linear guide rail connecting rods 42 are arranged on the guide rail connecting rod mounting seat 41. The two linear guide rail connecting rods 42 are equidistant from the output shaft 23 and are arranged parallel to the output shaft 23. A sliding hole 312 for the linear guide rail connecting rod 42 to pass through is provided on the nut sleeve fixing seat 31. A sliding bearing 3121 is provided at the sliding hole 312. The linear guide rail connecting rod 42 and the sliding bearing 3121 are slidingly arranged to reduce the friction loss and surface wear of the linear guide rail connecting rod 42.

[0045] A wire rope threading hole 313 and a wire rope 43 fixing hole 411 for fixing and threading the wire rope 43 are provided on the nut sleeve fixing seat 31 and the guide rail connecting rod mounting seat 41. The wire rope 43 threading hole 313 and the wire rope 43 fixing hole 411 are arranged at the center position of the two linear guide rail connecting rods 42, which is relatively stable when used. By pulling the wire rope 43 passing through the wire rope threading hole 313 and the wire rope 43 fixing hole 411, the nut sleeve fixing seat 31 is moved toward the output shaft 23, the nut and bolt are connected, and the torque transmitted by the electric wrench completes the tightening of the bolt, so that the positioning of the bolt and nut and the screw locking can be completed in a narrow space, thereby improving the positioning and alignment effect of the bolt and nut.

[0046] A reset spring 44 is also arranged outside the linear guide connecting rod 42, and the reset spring 44 can reset the nut sleeve fixing seat 31, at which time the bolts and nuts can be removed from the sleeve and new bolts and nuts can be installed, so as to facilitate and quickly install the next set of bolts and nuts and improve the installation speed.

[0047] The implementation principle of the electric wrench extension rod of the embodiment of the present application is as follows: the extension rod 15 transmits the wrench power to the input shaft 22, and then the transmission member 24 transmits the power on the input shaft 22 to the output shaft 23, and the bolt sleeve installed on the output shaft 23 transmits the power to the bolt, and the nut is fixed in the nut sleeve on the nut sleeve fixing seat 31 and aligned with the bolt, and by pulling the wire rope 43 passing through the wire rope 43 threading hole 313 and the wire rope 43 fixing hole 411, the nut sleeve fixing seat 31 moves toward the output shaft 23 to connect the nut and bolt, and the tightening of the bolt is completed by the torque transmitted by the electric wrench, which can achieve the positioning of the bolt and nut and the locking of the screws in a narrow space, thereby improving the positioning and alignment effect of the bolt and nut.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An electric wrench extension rod, characterized in that: include A connecting device (1), the connecting device (1) comprising a mounting seat (11), a sleeve adapter flange (12), an outer sleeve (13) and an input end flange (14); one side of the mounting seat (11) is fixedly connected to the output end of the wrench, and the other side is fixedly connected to the sleeve adapter flange (12); the outer sleeve (13) is fixedly installed on the side of the sleeve adapter flange (12) away from the mounting seat (11); one side of the input end flange (14) is fixedly connected to the outer sleeve (13); a transmission hole (16) is provided in the center of the mounting seat (11), the sleeve adapter flange (12), the outer sleeve (13) and the input end flange (14); an extension rod (15) is provided on the output shaft of the electric wrench; the extension rod (15) passes through the transmission hole (16) to transmit power; A bolt sleeve fixing device (2), the bolt sleeve fixing device (2) comprising a bolt sleeve fixing seat (21), an input shaft (22), an output shaft (23), a transmission member (24) and an output end flange (25), one end of the bolt sleeve fixing seat (21) being fixedly connected to the input end flange (14) and the other end being fixedly connected to the output end flange (25), the input shaft (22) being fixedly connected to the extension rod (15), the transmission member (24) being arranged inside the bolt sleeve fixing seat (21) to transmit the torque of the input shaft (22) to the output shaft (23), the output end flange (25) being provided with a hole for the output shaft (23) to pass through, the bolt sleeve being sleeved on the output shaft (23) located outside the output end flange (25) and being fixedly connected to the output shaft (23); A nut sleeve fixing device (3), the nut sleeve fixing device (3) comprising a nut sleeve fixing seat (31), the nut sleeve fixing seat (31) being provided with a mounting hole (311) for mounting the nut sleeve, the mounting hole (311) being coincident with the axis of the output shaft (23); The locking mechanism (4) comprises a guide rail connecting rod mounting seat (41) fixedly connected to the output end flange (25) and the mounting seat (11); a linear guide rail connecting rod (42) is arranged on the guide rail connecting rod mounting seat (41); the linear guide rail connecting rod (42) is parallel to the axis of the output shaft (23); the nut sleeve fixing seat (31) is provided with a sliding hole (312) for the linear guide rail connecting rod (42) to move; and a steel wire rope (43) is arranged on the nut sleeve fixing seat (31). The guide rail connecting rod mounting seat (41) is provided with a wire rope (43) fixing hole (411) which coincides with the axis of the wire rope (43) threading hole (313); a wire rope (43) is arranged in the locking mechanism (4) and passes through the wire rope (43) threading hole (313) and the wire rope (43) fixing hole (411); by pulling the wire rope (43), the nut sleeve fixing seat (31) and the nut sleeve arranged on the upper side move toward the direction of the output shaft (23).

2. The electric wrench extension rod according to claim 1, characterized in that: The linear guide rail connecting rod (42) is provided in two, and the wire rope (43) threading hole (313) and the wire rope (43) fixing hole (411) are provided in the middle position of the connecting line of the two linear guide rail connecting rods (42).

3. The electric wrench extension rod according to claim 2, characterized in that: A sliding bearing (3121) is provided at the sliding hole (312), and the linear guide connecting rod (42) is slidably connected to the sliding bearing (3121).

4. The electric wrench extension rod according to claim 3, characterized in that: A return spring (44) is arranged outside the linear guide rail connecting rod (42).

5. The electric wrench extension rod according to claim 1, characterized in that: One end of the output shaft (23) connected to the bolt sleeve is arranged in a square shape.

6. The electric wrench extension rod according to claim 1, characterized in that: The transmission member (24) is configured as two bevel gears of equal size that mesh with each other, and the two bevel gears are rotatably connected to two ends of the bolt sleeve fixing seat (21) respectively.

7. The electric wrench extension rod according to claim 1, characterized in that: The extension rod (15) is adjustable in length.

8. The electric wrench extension rod according to claim 7, characterized in that: The outer sleeve (13) and the extension rod (15) are used in pairs as a set.

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