An electric wrench suitable for anchor nuts

Abstract

This utility model discloses an electric wrench suitable for anchor bolt nuts in the field of wrench technology. One end of the extension rod is fixedly connected to a connecting ring, and a sleeve is rotatably connected to the connecting ring. A gearbox is provided on the extension rod, and a connecting piece is provided between the gearbox and the extension rod. A power component is provided inside the gearbox. Gear teeth are provided on the outer side of the sleeve, and the power component meshes with the sleeve. A bushing is provided inside the sleeve for engaging the nut. A limit component is provided between the sleeve and the bushing. This utility model, by using a motor and gear set to drive the sleeve to rotate, can efficiently output high torque, ensuring rapid tightening of the anchor bolt nut. Simultaneously, the extension rod ensures the anchor bolt is screwed in vertically, preventing skewing, and the bearing structure reduces friction, improving operational smoothness. Compared to traditional manual tools, electric drive significantly reduces operational intensity and improves construction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of wrench technology, and in particular to an electric wrench suitable for anchor bolt nuts. Background Technology

[0002] On construction sites, bolts and nuts are often used for connection and fixation. Common handheld electric wrenches can generally only tighten one side of the bolt head, or only the nut side when the bolt is short. When the bolt head has limited space and cannot be tightened with an electric wrench, or when the anchor bolt has no bolt head, only the nut side can be tightened. However, in most cases, the bolt length (especially anchor bolts) exceeds the socket depth of the electric wrench, making it impossible to use a regular electric wrench. In these situations, hand tightening or the use of an open-end wrench is necessary.

[0003] However, existing technologies have some problems: in fields such as steel structure installation and wind power installation, the nuts are usually tightened by hand when connecting to anchor bolts. However, due to the large number of anchor bolts, manual installation of nuts greatly affects the project progress and increases labor costs. In order to solve the problem that the bolts are too long and ordinary electric wrenches cannot be used to tighten them, and workers can only tighten the nuts by hand, we propose an electric wrench suitable for anchor bolt nuts to improve the installation efficiency and speed up the construction and installation progress. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an electric wrench suitable for anchor bolt nuts. It replaces manual operation with motor drive and incorporates replaceable bushings to improve the efficiency of anchor bolt installation, while also being compatible with nuts of different shapes.

[0005] The purpose of this utility model is achieved as follows: an electric wrench suitable for anchor bolt nuts includes a lever, one end of which is fixedly connected to a connecting ring, and a sleeve is rotatably connected to the connecting ring. A gearbox is provided on the lever, and a connecting member is provided between the gearbox and the lever. A power component is provided inside the gearbox. Gear teeth are provided on the outer side of the sleeve, and the power component meshes with the sleeve. A bushing is provided inside the sleeve for engaging the nut. A limit component is provided between the sleeve and the bushing.

[0006] Optionally, the connecting ring is composed of two retaining rings joined together. A retaining groove is provided on the inner side of the connecting ring, and a retaining ring is provided on the sleeve. The retaining ring is correspondingly provided with the retaining groove, and the retaining ring and the retaining groove are rotatably connected.

[0007] Optionally, the force-adding rod has multiple connecting holes, which are equidistantly distributed. The connector is inserted into the connecting hole, and a connecting nut is threaded onto the connector. The connector is fixedly connected to the gearbox.

[0008] Optionally, the power component includes a motor, which is fixedly installed with a gearbox. A gear set is provided inside the gearbox. The motor and the gear set are configured to cooperate. The motor drives the gear set for transmission, and the gear set meshes with a sleeve.

[0009] Optionally, the limiting component includes a limiting block, and the sleeve has a limiting groove. There are multiple limiting grooves, which are circumferentially distributed. The limiting block is fixedly connected to the bushing, and the limiting block and the limiting groove are correspondingly arranged and engaged.

[0010] Optionally, a sliding groove is provided inside the sleeve, a locking block is slidably connected in the sliding groove, a lever is provided on the locking block, a spring is provided in the sliding groove, one end of the spring is fixedly connected to the locking block, and the other end of the spring is fixedly connected to the sliding groove.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. The motor and gear set inside the gearbox drive the sleeve to rotate, efficiently outputting high torque to ensure rapid tightening of the anchor bolt nut. The lever design of the extension rod integrates axial pressure and rotational torque, ensuring the anchor bolt is screwed in vertically and preventing misalignment. Simultaneously, the bearing structure reduces friction and improves operational smoothness. Compared to traditional manual tools, electric drive significantly reduces operational intensity and improves construction efficiency, making it particularly suitable for high-altitude, confined space, or large-scale anchor bolt installation scenarios.

[0012] 2. By setting up modular bushings and limiting components, bushings of different specifications can be quickly disassembled and installed, flexibly adapting to nuts of various sizes or shapes. The cooperation between the limiting block and the spring clip ensures that the bushing is firmly fixed, and the anti-slip pad enhances the interlocking effect and prevents slippage. This means that the overall structure does not require multiple special wrenches, saving tool costs and reducing replacement time, significantly improving the versatility of tools and work efficiency. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0014] Figure 1This is a schematic diagram of the overall structure provided by this utility model.

[0015] Figure 2 This is a cross-sectional schematic diagram of the gearbox structure provided by this utility model.

[0016] Figure 3 This is a schematic diagram of the connecting ring structure provided by this utility model.

[0017] Figure 4 This is a cross-sectional schematic diagram of the sleeve structure provided by this utility model.

[0018] Figure 5 This is a schematic diagram of the bushing structure provided by this utility model.

[0019] Figure 6 This is the utility model Figure 4 An enlarged schematic diagram of the structure of part A.

[0020] In the diagram: 1. Force bar; 11. Connecting ring; 1101. Slot; 12. Gearbox; 13. Connecting hole; 14. Connecting piece; 15. Connecting nut; 2. Sleeve; 21. Snap ring; 22. Gear tooth; 23. Limiting groove; 24. Slide groove; 3. Power assembly; 31. Motor; 32. Gear set; 4. Bushing; 41. Limiting block; 5. Limiting assembly; 51. Locking block; 52. Pulling block; 53. Spring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figures 1 to 6 An electric wrench for anchor bolt nuts is shown, comprising a lever 1, one end of which is fixedly connected to a connecting ring 11, a sleeve 2 rotatably connected to the connecting ring 11, a gearbox 12 on the lever 1, a connector 14 between the gearbox 12 and the lever 1, a power assembly 3 inside the gearbox 12, gear teeth 22 on the outer side of the sleeve 2, the power assembly 3 meshing with the sleeve 2, a bushing 4 inside the sleeve 2 for engaging the nut, and a limit assembly 5 between the sleeve 2 and the bushing 4.

[0023] Furthermore, the electric wrench provided in this application engages with the socket 2 with gear teeth 22 through the power component 3 in the gearbox 12 to achieve high torque and precise output. Combined with the dynamic engagement structure of the bushing 4, it automatically locks the nut, saving manual alignment time. Secondly, the lever design of the extension rod 1 integrates axial pressure and rotational torque to ensure that the anchor bolt is screwed in vertically. Compared with traditional tools, the modular design of this application simplifies the engagement, pressure application and tightening process into a one-step operation, improving the efficiency of anchor bolt installation.

[0024] Specifically, the connecting ring 11 is composed of two retaining rings 21. A retaining groove 1101 is provided on the inner side of the connecting ring 11. A retaining ring 21 is provided on the sleeve 2. The retaining ring 21 is correspondingly provided with the retaining groove 1101, and the retaining ring 21 and the retaining groove 1101 are rotatably connected.

[0025] It should be noted that, since the connecting ring 11 is fixedly connected to the force-applying rod 1, and the sleeve 2 and the connecting ring 11 need to rotate and there is friction, a bearing to reduce friction is provided between the groove 1101 and the retaining ring 21. The bearing is a conventional prior art and is not shown in the figure.

[0026] Furthermore, the bearing installed between the slot 1101 and the retaining ring 21 significantly reduces rotational friction resistance, allowing the sleeve 2 to rotate smoothly within the connecting ring 11. This avoids jamming or wear caused by direct metal-to-metal contact. Simultaneously, no additional lubrication is required, reducing maintenance needs and making it particularly suitable for long-term operations at heights or in harsh environments. At the same time, the sliding bearing effectively distributes the radial load transmitted by the extension rod 1, ensuring stable torque transmission to the sleeve 2, extending tool life, improving operating feel, and making anchor bolt installation more efficient and labor-saving.

[0027] Specifically, the force-adding rod 1 has multiple connecting holes 13, which are equidistantly distributed. The connecting piece 14 is inserted into the connecting hole 13, and a connecting nut 15 is threaded onto the connecting piece 14. The connecting piece 14 is fixedly connected to the gearbox 12.

[0028] Specifically, the power assembly 3 includes a motor 31, which is fixedly installed with the gearbox 12. The gearbox 12 contains a gear set 32, and the motor 31 and the gear set 32 ​​are configured to work together. The motor 31 drives the gear set 32 ​​to transmit power, and the gear set 32 ​​meshes with the sleeve 2.

[0029] Furthermore, the multiple equidistantly distributed connecting holes 13 on the force-adding rod 1 allow the connector 14 and the gearbox 12 to flexibly choose their insertion positions and adjust the position of the gearbox 12. This enables the gear set 32 ​​inside the gearbox 12 to be adjusted, such as by replacing gears or adjusting the tooth pitch, thereby changing the transmission ratio of the gear set 32 ​​and thus affecting the output speed of the gear set 32. This can optimize transmission efficiency or adapt to the speed requirements of different working conditions, making it more suitable for matching the dynamic requirements of the load.

[0030] Furthermore, the connecting piece 14 secures the gearbox 12 to the pressure rod with a threaded nut, ensuring a stable structure that is easy to disassemble and maintain. Conventional threaded connection technology can be used. This modular structure not only enhances the adaptability of the tool, making it suitable for the installation of anchor bolts of different specifications, but also provides a more convenient way to operate in confined spaces or at special angles, while maintaining the rigidity and reliability of the overall structure and improving construction efficiency.

[0031] Specifically, the limiting component 5 includes a limiting block 41, and a limiting groove 23 is provided on the sleeve 2. There are multiple limiting grooves 23, which are distributed in a circle. The limiting block 41 is fixedly connected to the bushing 4, and the limiting block 41 and the limiting groove 23 are correspondingly set and engaged. Specifically, a sliding groove 24 is provided inside the sleeve 2, and a locking block 51 is slidably connected inside the sliding groove 24. A lever 52 is provided on the locking block 51, and a spring 53 is provided inside the sliding groove 24. One end of the spring 53 is fixedly connected to the locking block 51, and the other end of the spring 53 is fixedly connected to the sliding groove 24.

[0032] Furthermore, by setting the limiting component 5, the bushing 4 can be quickly replaced to accommodate anchor bolts of different specifications or shapes, thereby improving the versatility and flexibility of the tool. Furthermore, by engaging the limiting block 41 with the circumferentially distributed limiting grooves 23, the bushing 4 can be securely fixed inside the sleeve 2, ensuring reliable alignment and uniform force distribution during operation, while preventing slippage or misalignment.

[0033] Secondly, the modular structure simplifies the assembly and disassembly of bushing 4, making it easy to adjust quickly according to different working conditions. This saves replacement time, ensures construction accuracy, is suitable for diverse anchoring needs, improves work efficiency, and reduces tool configuration costs.

[0034] Furthermore, during use, after aligning the six limiting blocks 41 on the bushing 4 with the limiting grooves 23 on the sleeve 2, insert them directly. The limiting blocks 41 will directly press the locking block 51, causing the locking block 51 to retract into the slide groove 24. At the same time, the locking block 51 compresses the spring 53. After the limiting block 41 is fully inserted into the limiting groove 23, the locking block 51 will automatically reset due to the elastic force of the spring 53, blocking the path of the limiting block 41 to slide down and preventing the bushing 4 from slipping off. Furthermore, both the limiting block 41 and the locking block 51 are rounded to ensure smooth assembly and disassembly and to prevent the corners of the limiting block 41 or the locking block 51 from getting stuck. When disassembly is required, pull down the bushing 4, and then pull the lever 52. After the locking block 51 slides a certain distance into the slide groove 24, the rounded end of the limiting block 41 cooperates with the locking block 51, applying pressure to the locking block 51 to make it retract into the slide groove 24, thus completing the disassembly of the bushing 4. Secondly, the elastic force of spring 53 is mainly used to pre-tighten the locking block 51 to prevent the bushing 4 from slipping and falling off due to the unstable position of the locking block 51. Therefore, when setting spring 53, only the pre-tightening force of spring 53 on locking block 51 needs to be considered.

[0035] Finally, the bushing 4 is equipped with an anti-slip pad to improve the engagement of the bushing 4 with the nut, while also providing a certain amount of cushioning to prevent the collision between the bushing 4 and the nut from being too violent.

[0036] Furthermore, the removable bushing 4 allows the electric wrench to be adapted to various nuts, enhancing its versatility and enabling it to flexibly adapt to nuts of different sizes or shapes. By quickly replacing the bushing 4, diverse tightening needs can be met without the need to equip multiple special wrenches, saving tool costs and reducing replacement time during operation.

[0037] Working principle: This application uses a motor 31 inside the gearbox 12 to drive the gear set 32 ​​to rotate, which in turn drives the sleeve 2 with gear teeth 22 on the outer side to rotate, achieving high torque output. The force bar 1 converts the operator's downward pressure into axial pressure through the lever principle, ensuring that the anchor bolt is screwed in vertically. At the same time, the bearing structure between the connecting ring 11 and the sleeve 2 reduces friction, making the rotation smoother. The replaceable bushing 4 inside the sleeve 2 is quickly locked by the limiting component 5. Its internal anti-slip pad tightly engages with the nut to prevent slippage. The design of the limiting groove 23, spring 53, and locking block 51 makes the bushing 4 easy to install and remove, and adaptable to nuts of different specifications.

[0038] The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. An electric wrench suitable for anchor bolt nuts, comprising a lever (1), characterized in that: One end of the force-adding rod (1) is fixedly connected to a connecting ring (11), and a sleeve (2) is rotatably connected to the connecting ring (11). A gearbox (12) is provided on the force-adding rod (1), and a connecting piece (14) is provided between the gearbox (12) and the force-adding rod (1). A power assembly (3) is provided inside the gearbox (12), and gear teeth (22) are provided on the outer side of the sleeve (2). The power assembly (3) meshes with the sleeve (2). A bushing (4) is provided inside the sleeve (2), and the bushing (4) is used to engage the nut. A limit assembly (5) is provided between the sleeve (2) and the bushing (4).

2. The electric wrench for anchor bolt nuts according to claim 1, characterized in that: The connecting ring (11) is composed of two retaining rings (21). A retaining groove (1101) is provided on the inner side of the connecting ring (11). A retaining ring (21) is provided on the sleeve (2). The retaining ring (21) is correspondingly provided with the retaining groove (1101). The retaining ring (21) and the retaining groove (1101) are rotatably connected.

3. An electric wrench for anchor bolt nuts according to claim 1, characterized in that: The force-adding rod (1) has a connecting hole (13), and there are multiple connecting holes (13) that are equidistantly distributed. The connecting piece (14) is inserted into the connecting hole (13), and a connecting nut (15) is threaded onto the connecting piece (14). The connecting piece (14) is fixedly connected to the gearbox (12).

4. An electric wrench for anchor bolt nuts according to claim 1, characterized in that: The power assembly (3) includes a motor (31), which is fixedly installed with a gearbox (12). A gear set (32) is provided inside the gearbox (12). The motor (31) and the gear set (32) are configured to cooperate. The motor (31) drives the gear set (32) to transmit power. The gear set (32) meshes with the sleeve (2).

5. An electric wrench for anchor bolt nuts according to claim 1, characterized in that: The limiting component (5) includes a limiting block (41), and a limiting groove (23) is provided on the sleeve (2). There are multiple limiting grooves (23), which are distributed in a circle. The limiting block (41) is fixedly connected to the bushing (4). The limiting block (41) and the limiting groove (23) are correspondingly set, and the limiting block (41) and the limiting groove (23) are engaged.

6. An electric wrench for anchor bolt nuts according to claim 1, characterized in that: The sleeve (2) has a groove (24) inside, and a locking block (51) is slidably connected in the groove (24). A lever (52) is provided on the locking block (51). A spring (53) is provided in the groove (24). One end of the spring (53) is fixedly connected to the locking block (51), and the other end of the spring (53) is fixedly connected to the groove (24).

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