A hand-held electric hammer for bolt removal and tightening

Abstract

The utility model provides a handheld electric hammer for bolt dismounting and fastening, including knock wrench, strike lever, electric hammer casing, reciprocating chain, chain rod, speed reducer, motor, strike lever reset spring, impact hammer energy storage spring, impact hammer, lithium cell, switch, through the rechargeable lithium battery energy supply, motor drive operation, reduce the human consumption and safety risk in the process of bolt fastening, strike lever and knock wrench are connected through fixed pin, can change different knock wrench according to the difference of bolt size, be applicable to the dismounting and fastening of multiple size bolt, simple structure, convenient operation, battery power supply, safe and reliable.

Description

Technical Field

[0001] This utility model belongs to the field of chemical equipment technology, and specifically relates to a handheld electric hammer for bolt disassembly and tightening. Background Technology

[0002] Currently, in the maintenance and repair of large-scale continuous chemical equipment, the disassembly and tightening of large bolts are mostly done using hydraulic wrenches or manual hammering. Hydraulic wrenches are inefficient and limited by space, while manual hammering is physically demanding and poses significant safety hazards. Therefore, it is essential to provide a handheld electric hammer that can replace manual labor on-site, enabling safe, fast, and efficient bolt disassembly and tightening. Utility Model Content

[0003] In view of this, this utility model addresses the shortcomings of the existing technology by providing a handheld electric hammer for bolt disassembly and tightening. It uses a battery to drive a motor as a power source to achieve the hammering function, reducing human work activities and achieving inherent safety.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a handheld electric hammer for bolt disassembly and tightening, comprising a striking wrench 1, a striking rod 2, an electric hammer housing 3, a reciprocating chain 4, a chain lever 5, a reduction mechanism 6, a motor 7, a striking rod return spring 8, an impact hammer energy storage spring 9, an impact hammer 10, a lithium battery 11, and a switch 12. The striking wrench 1 and the striking rod 2 are connected by a fixing pin. The side of the striking rod 2 connected to the striking wrench 1 extends out of the electric hammer housing 3. One side of the striking rod return spring 8 is connected to the horizontal inner wall of the electric hammer housing 3. The striking rod return spring 8 surrounds the part of the striking rod 2 located inside the electric hammer housing 3. The side of the striking rod return spring 8 located inside the electric hammer housing 3 is connected to the left fixing ring of the rod head inside the striking rod 2. The impact hammer energy storage spring 9 is located inside the electric hammer housing 3. On the lower inner side of the 2nd part, one side of the impact hammer energy storage spring 9 is connected to the lower inner wall of the electric hammer housing 3, and the other side is connected to the fixed support of the impact hammer 10 on the hammer head side. The impact hammer 10 is located on the horizontal central axis inside the electric hammer housing 3. The impact hammer 10 is connected to the impact hammer fixed support. The impact hammer 10 fixed support is located on the slide rail inside the electric hammer housing 3. The reciprocating chain 4 is located above the impact hammer 10. The inner sides of the two ends of the reciprocating chain 4 are respectively engaged with the driving gear and the driven gear inside the electric hammer housing 3. The chain lever 5 is fixed on the reciprocating chain 4. The reduction mechanism 6 is connected to the driving gear inside the electric hammer housing 3. The motor 7 is connected to the reduction mechanism 6. The lithium battery 11 is located inside the electric hammer housing 3 on the opposite side of the striking rod 2 extending out. The switch 12 is located on the electric hammer housing 3 above the lithium battery 11.

[0005] When in use, hold the electric hammer housing 3 with both hands, press the switch 12, and the motor 7 will rotate, driving the reduction mechanism 6 to rotate. After the reduction mechanism 6 increases the torque, it will transmit a larger torque to the reciprocating chain 4. The reciprocating chain 4 will drive the chain lever 5 to rotate. After the chain lever 5 rotates to the position where it connects with the impact hammer 10, it will push the impact hammer 10 to move backward to store energy. At the same time, it will pull the impact hammer energy storage spring 9 connected to the impact hammer 10 to stretch. After the impact hammer 10 reaches the limit position, it will disengage from the chain lever 5. Under the pull of the impact hammer energy storage spring 9, the impact hammer 10 will move to the left at high speed and hit the striking rod 2. The striking rod 2 will transfer energy to the striking wrench 1 to tighten or loosen the bolt.

[0006] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0007] Firstly, the motor drives the operation by powering a rechargeable lithium battery, reducing the manpower consumption and safety risks during the bolt tightening process.

[0008] Secondly, the striking lever and the striking wrench are connected by a fixing pin, and different striking wrenches can be replaced according to different bolt sizes, making it suitable for disassembling and tightening bolts of various sizes. Attached Figure Description

[0009] The following is in conjunction with the appendix Figure 1 The present invention will be further described in detail below with reference to specific embodiments.

[0010] Figure 1 This is a cross-sectional structural diagram of the present invention.

[0011] In the diagram: 1. Striking wrench; 2. Striking lever; 3. Electric hammer housing; 4. Reciprocating chain; 5. Chain lever; 6. Reduction mechanism; 7. Motor; 8. Striking lever return spring; 9. Impact hammer energy storage spring; 10. Impact hammer; 11. Lithium battery; 12. Switch. Detailed Implementation

[0012] To better understand this utility model, the following embodiments further illustrate its content, but the scope of protection of this utility model is not limited to the embodiments described below. Numerous specific details are set forth in the following description to provide a more thorough understanding of this utility model. However, it will be apparent to those skilled in the art that this utility model can be practiced without one or more of these details.

[0013] like Figure 1As shown, a handheld electric hammer for bolt removal and tightening includes a striking wrench 1, a striking rod 2, an electric hammer housing 3, a reciprocating chain 4, a chain lever 5, a reduction mechanism 6, a motor 7, a striking rod return spring 8, an impact hammer energy storage spring 9, an impact hammer 10, a lithium battery 11, and a switch 12. The striking wrench 1 and the striking rod 2 are connected by a fixing pin. The side of the striking rod 2 connected to the striking wrench 1 extends out of the electric hammer housing 3. One side of the striking rod return spring 8 is connected to the horizontal inner wall of the electric hammer housing 3. The striking rod return spring 8 surrounds the part of the striking rod 2 inside the electric hammer housing 3. The side of the striking rod return spring 8 inside the electric hammer housing 3 is connected to the left fixing ring of the rod head inside the striking rod 2. The impact hammer energy storage spring 9 is located on the lower side of the inner part of the striking rod 2 inside the electric hammer housing 3. One side of the energy storage spring 9 is connected to the lower inner wall of the electric hammer housing 3, and the other side is connected to the fixed support of the impact hammer 10 on the hammer head side. The impact hammer 10 is located on the horizontal central axis inside the electric hammer housing 3. The impact hammer 10 is connected to the fixed support of the impact hammer. The fixed support of the impact hammer 10 is located on the slide rail inside the electric hammer housing 3. The reciprocating chain 4 is located above the impact hammer 10. The inner sides of both ends of the reciprocating chain 4 are respectively engaged with the driving gear and the driven gear located inside the electric hammer housing 3. The chain lever 5 is fixed on the reciprocating chain 4. The reduction mechanism 6 is connected to the driving gear located inside the electric hammer housing 3. The motor 7 is connected to the reduction mechanism 6. The lithium battery 11 is located inside the electric hammer housing 3 on the opposite side of the striking rod 2 extending out. The switch 12 is located on the electric hammer housing 3 above the lithium battery 11.

[0014] Working principle: When in use, hold the electric hammer housing 3 with both hands, press the switch 12, the motor 7 runs and drives the reduction mechanism 6 to rotate. After the reduction mechanism 6 increases the torque, it transmits a larger torque to the reciprocating chain 4. The reciprocating chain 4 drives the chain lever 5 to rotate. After the chain lever 5 rotates to the position where it connects with the impact hammer 10, it pushes the impact hammer 10 to move backward to store energy. At the same time, it pulls the impact hammer energy storage spring 9 connected to the impact hammer 10 to stretch. After the impact hammer 10 reaches the limit position, it disengages from the chain lever 5. Under the pull of the impact hammer energy storage spring 9, the impact hammer 10 moves to the left at high speed and hits the striking rod 2. The striking rod 2 transmits energy to the striking wrench 1 to tighten or loosen the bolt.

[0015] The features of this utility model are simple structure, convenient operation, battery power supply, and safety and reliability.

Claims

1. A handheld electric hammer for bolt removal and tightening, comprising a striking wrench (1), a striking rod (2), an electric hammer housing (3), a reciprocating chain (4), a chain lever (5), a reduction mechanism (6), a motor (7), a striking rod return spring (8), an impact hammer energy storage spring (9), an impact hammer (10), a lithium battery (11), and a switch (12), characterized in that, The striking wrench (1) and the striking rod (2) are connected by a fixing pin. The side of the striking rod (2) connected to the striking wrench (1) extends out of the electric hammer housing (3). One side of the striking rod return spring (8) is connected to the horizontal inner wall of the electric hammer housing (3). The striking rod return spring (8) surrounds the part of the striking rod (2) inside the electric hammer housing (3). The side of the striking rod return spring (8) inside the electric hammer housing (3) is connected to the fixing ring on the left side of the rod head inside the striking rod (2). The impact hammer energy storage spring (9) is located on the lower side of the inner part of the striking rod (2) inside the electric hammer housing (3). One side of the impact hammer energy storage spring (9) is connected to the lower inner wall inside the electric hammer housing (3), and the other side is connected to the fixed support of the impact hammer (10) on the hammer head side. The impact hammer (10) is located on the horizontal central axis inside the electric hammer housing (3). The impact hammer (10) is connected to the impact hammer fixed support. The impact hammer (10) fixed support is located on the slide rail inside the electric hammer housing (3). The reciprocating chain (4) is located above the impact hammer (10). The inner sides of the two ends of the reciprocating chain (4) are respectively engaged with the driving gear and the driven gear inside the electric hammer housing (3). The chain lever (5) is fixed on the reciprocating chain (4). The reduction mechanism (6) is connected to the driving gear inside the electric hammer housing (3). The motor (7) is connected to the reduction mechanism (6). The lithium battery (11) is located inside the electric hammer housing (3) on the opposite side of the striking rod (2) extending out. The switch (12) is located on the electric hammer housing (3) above the lithium battery (11).

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