Electric wrench for reinforcing steel bar sleeve

Abstract

The utility model relates to the technical field of electric wrenches, in particular to a steel bar sleeve electric wrench which comprises a battery handle, a servo motor is installed at the top end of the battery handle, and an adapter gearbox is installed at one end of the servo motor through four screws. An upper face cover and a lower face cover are connected to one end of the transfer gearbox in an inserted mode, a gear ring is arranged on one side of the interior of the upper face cover and one side of the interior of the lower face cover, a movable claw is hinged to one end of the inner side of the gear ring through a pin rod, the surface of the pin rod is sleeved with a claw torsion spring, and a reversing mechanism is arranged between the movable claw and the lower face cover. A fixed claw is arranged at the end, away from the movable claw, of the gear ring, and the fixed claw and the movable claw are matched with each other to be used for holding the reinforcing steel bar sleeve. The problem that the upper face and the lower face of an existing fixing claw need to be fixed through bolts during installation is solved, meanwhile, the pin rod is installed on the front face, the fixing claw is fixed on the back face, and the electric wrench looks attractive.

Description

Technical Field

[0001] The utility model relates to the technical field of electric wrenches, in particular to a steel bar sleeve electric wrench. Background Art

[0002] An electric wrench is a wrench powered by a power source or battery. It is a tool for tightening high-strength bolts or steel bar sockets. Electric wrenches are mainly used in the steel structure installation industry and are specifically used to install high-strength bolts for steel structures. High-strength bolts are used to connect steel structure joints and usually appear in the form of bolt groups.

[0003] The pins of existing electric wrenches are all installed upside down, and the pins are on the front after the inverted installation, and the fixing claws are installed by bolts on both sides, so the front of the electric wrench does not look beautiful enough, which brings great trouble to people's use. Utility Model Content

[0004] The utility model aims to provide a steel bar socket electric wrench to solve the problem in the above background technology that the front of the existing electric wrench does not look beautiful enough and the fixing claws need to be fixed by bolts on both sides when installing.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an electric wrench for a steel bar socket, comprising a battery handle, a servo motor is installed on the top of the battery handle, and a transfer box is installed on one end of the servo motor through four screws; an upper cover and a lower cover are inserted into one end of the transfer box, a gear ring is arranged on one side inside the upper cover and the lower cover, and the gear ring realizes rotation through mutual transmission with the servo motor through a transmission mechanism; a movable claw is hinged on one end of the inner side of the gear ring through a pin rod, and a claw torsion spring is mounted on the surface of the pin rod, one end of the claw torsion spring is in contact with the surface of the movable claw, and the other end of the claw torsion spring is inserted and tightened with the surface of the gear ring; a reversing mechanism is arranged between the movable claw and the lower cover, and the reversing mechanism is used for the reversal of the movable claw; a fixed claw is arranged on the end of the gear ring away from the movable claw, and the fixed claw cooperates with the movable claw for clamping the steel bar socket.

[0006] Preferably, a rear suspension hook is fixed between the servo motor and the two screws on the top of the adapter gear box, a front suspension hook is fixed to the surface of the upper cover by screws, and the rear suspension hook and the front suspension hook cooperate to facilitate the suspension work of the electric wrench.

[0007] Preferably, the upper cover and the lower cover are fixed to the adapter gear box by screws, and the upper cover and the lower cover are fixed by screws; the pin rod is inserted from the upper surface of the movable claw and passes through the gear ring and comes out from the lower surface of the movable claw and is inserted with a pin.

[0008] Preferably, an upper wear-resistant piece is arranged on the upper surface of the toothed ring, and the upper wear-resistant piece is fixedly connected to the inner wall of the upper cover by screws. A lower wear-resistant piece is arranged on the lower surface of the toothed ring, and the lower wear-resistant piece is fixedly connected to the inner wall of the lower cover by screws. The upper wear-resistant piece and the lower wear-resistant piece cooperate for wear-resistant work when the toothed ring rotates.

[0009] Preferably, convex table surfaces are arranged on both sides of the surface of the fixed claw. When the fixed claw is installed with the toothed ring, the convex table surfaces block the surface of the toothed ring to limit the freedom degree of the fixed claw in the vertical upward direction. Two spacer screws are threadedly connected to the surface of the toothed ring, and after the spacer screws are tightened, the fixed claw is pressed to limit the freedom degree of the fixed claw in the vertical downward direction.

[0010] Preferably, the reverse mechanism includes a reverse fixed block, a reverse movable block, an equal-height screw rod, and a reverse torsion spring. The reverse fixed block is fixedly connected to the surface of the lower cover by two bolts.

[0011] Preferably, a reverse movable block is placed on the surface of the movable claw, and a reverse torsion spring is arranged at the bottom end of the reverse movable block. The top end of the reverse torsion spring is inserted and fixed to the reverse movable block, and at the same time, the other end of the reverse torsion spring is closely attached to the surface of the movable claw. An equal-height screw rod is arranged above the reverse movable block, and the bottom end of the equal-height screw rod passes through the reverse movable block and the reverse torsion spring and is threadedly connected to the surface of the movable claw.

[0012] Preferably, the transmission mechanism includes a transmission shaft, a small bevel gear, a large bevel gear, a driving gear, and an idler gear. The transmission shaft is connected to the inside of the adapter gearbox by two bearings, and one end of the transmission shaft is fixedly connected to the output end of the servo motor. One end of the upper cover and the lower cover is connected with a small bevel gear by two bearings, and the small bevel gear is inserted and fixed to the transmission shaft.

[0013] Preferably, a large bevel gear is installed in the lower cover through a bearing, and the large bevel gear meshes with the small bevel gear. A driving gear is inserted and fixed at the top end of the large bevel gear. Four idler gears are installed in the lower cover and the upper cover through bearings, and the two front idler gears are both meshed with the toothed ring, and the two rear idler gears are both meshed with the driving gear. The front and rear groups of idler gears are meshed with each other.

[0014] Compared with the prior art, the beneficial effect of the present utility model is that when assembling the electric wrench for the steel bar sleeve, the fixed claw is inserted into the groove of the toothed ring, and the convex table surface will block the surface of the toothed ring to limit the freedom degree of the fixed claw in the vertical upward direction. Then, two spacer screws are rotated, and after the spacer screws are tightened, the fixed claw is pressed to limit the freedom degree of the fixed claw in the vertical downward direction, thereby completing the installation of the fixed claw, solving the problem that the existing fixed claw needs to be fixed by bolts on both the upper and lower surfaces during installation. At the same time, the pin rod is installed on the front side, and the fixed claw is fixed on the reverse side, making the electric wrench look more beautiful. Description of the Drawings

[0015] Figure 1 is the three - dimensional appearance structure schematic diagram of the present utility model;

[0016] Figure 2 is the structure schematic diagram of the local upright state of the present utility model;

[0017] Figure 3 is the structure schematic diagram of the local inverted state of the present utility model;

[0018] Figure 4 is the exploded enlarged structure schematic diagram of the present utility model;

[0019] Figure 5 is the enlarged structure schematic diagram of the transmission mechanism of the present utility model;

[0020] Figure 6 is the enlarged structure schematic diagram of the reverse mechanism of the present utility model.

[0021] In the figure: 1. Battery handle; 2. Servo motor; 3. Adapter gearbox; 31. Rear suspension hook; 4. Upper cover; 41. Front suspension hook; 5. Lower cover; 6. Tooth ring; 61. Upper wear - resistant piece; 62. Lower wear - resistant piece; 7. Movable claw; 71. Pin rod; 72. Plug pin; 73. Claw part torsion spring; 8. Fixed claw; 81. Convex table surface; 82. Spacer screw; 9. Reverse mechanism; 91. Reverse fixed block; 92. Reverse movable block; 93. Equal - height screw rod; 94. Reverse torsion spring; 10. Transmission mechanism; 11. Transmission shaft; 12. Small bevel gear; 13. Large bevel gear; 14. Driving gear; 15. Idler gear. Detailed implementation manners

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. In addition, terms such as "first", "second", "third", "upper, lower, left, right", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. At the same time, in the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a connection that can be tightened, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0023] The structure of an electric wrench for steel bar sleeves provided by the present utility model is as Figure 1 and Figure 5As shown in the figure, it includes a battery handle 1. A servo motor 2 is installed at the top of the battery handle 1, and the battery handle 1 is electrically connected to the servo motor 2. The battery handle 1 provides power for the servo motor 2 and controls its forward and reverse rotation. One end of the servo motor 2 is equipped with a transfer gearbox 3 through four screws. A rear suspension hook 31 is fixed between the servo motor 2 and two of the screws at the top of the transfer gearbox 3. One end of the transfer gearbox 3 is inserted with an upper cover 4 and a lower cover 5. A front suspension hook 41 is fixed on the surface of the upper cover 4 by screws, and the cooperation between the rear suspension hook 31 and the front suspension hook 41 facilitates the hanging work of the electric wrench. The upper cover 4 and the lower cover 5 are both fixedly connected to the transfer gearbox 3 by screws, and the upper cover 4 and the lower cover 5 are fixed by screws; on one side inside the upper cover 4 and the lower cover 5, there is a toothed ring 6. An upper wear-resistant sheet 61 is arranged on the upper surface of the toothed ring 6, and the upper wear-resistant sheet 61 is fixedly connected to the inner wall of the upper cover 4 by screws. A lower wear-resistant sheet 62 is arranged on the lower surface of the toothed ring 6, and the lower wear-resistant sheet 62 is fixedly connected to the inner wall of the lower cover 5 by screws. The cooperation between the upper wear-resistant sheet 61 and the lower wear-resistant sheet 62 is used for the wear-resistant work of the toothed ring 6 during rotation.

[0024] During implementation, press the switch on the surface of the battery handle 1, and the battery handle 1 controls the servo motor 2 to rotate forward. Under the action of the transmission mechanism 10, the servo motor 2 drives the toothed ring 6 to rotate.

[0025] Furthermore, as Figure 4 and Figure 5 shown in the figure, the toothed ring 6 is driven to rotate through the transmission mechanism 10 and the servo motor 2. The transmission mechanism 10 includes a transmission shaft 11, a small bevel gear 12, a large bevel gear 13, a driving gear 14, and an idle gear 15. The transmission shaft 11 is connected inside the transfer gearbox 3 through two bearings, and one end of the transmission shaft 11 is fixedly connected to the output end of the servo motor 2. One end of the upper cover 4 and the lower cover 5 is installed with a rotatable small bevel gear 12 through two bearings, and the small bevel gear 12 is inserted and fixed with the transmission shaft 11. Inside the lower cover 5, there is a circumferentially rotatable large bevel gear 13 installed through a bearing, and the large bevel gear 13 meshes with the small bevel gear 12. The top of the large bevel gear 13 is inserted and fixed with a driving gear 14. Inside the lower cover 5 and the upper cover 4, there are four rotatable idle gears 15 installed through bearings. The two front idle gears 15 both mesh with the toothed ring 6, and the two rear idle gears 15 both mesh with the driving gear 14. The adjacent front and rear groups of idle gears 15 mesh with each other.

[0026] During implementation, the servo motor 2 drives the transmission shaft 11 to rotate, the transmission shaft 11 drives the small bevel gear 12 to rotate, the small bevel gear 12 meshes with the large bevel gear 13 to drive the driving gear 14 to rotate, and then the driving gear 14 drives the idle gears 15 to rotate. Since the toothed ring 6 meshes with two idle gears 15, there is always at least one idle gear 15 meshing with the toothed ring 6 to achieve the rotation of the toothed ring 6.

[0027] Further, as Figure 5 and Figure 6 shown, one end inside the gear ring 6 is hinged with a movable claw 7 through a pin rod 71, and a claw torsion spring 73 is sleeved on the surface of the pin rod 71. One end of the claw torsion spring 73 is in mutual contact with the surface of the movable claw 7, while the other end of the claw torsion spring 73 is inserted and fastened with the surface of the gear ring 6. The elastic force of the claw torsion spring 73 will push the clamping point of the movable claw 7 to move outwards to clamp the steel bar sleeve to be pulled; the pin rod 71 is inserted from the upper surface of the movable claw 7, passes through the gear ring 6, and passes out from the lower surface of the movable claw 7 and is inserted with a pin 72.

[0028] The pin rods 71 of the existing electric wrench are all installed upside down. After being installed upside down, the pin 72 will be on the front side, and the fixed claw 8 is installed through bolts on both sides. Therefore, the front of the electric wrench will look less beautiful. However, in the present utility model, by installing the pin rod 71 on the front side and fixing the fixed claw 8 on the back side, the electric wrench looks more beautiful.

[0029] Further, as Figure 3 , Figure 5 and Figure 6 shown, a reverse mechanism 9 is arranged between the movable claw 7 and the lower cover 5. The reverse mechanism 9 is used for the reverse operation of the movable claw 7 to facilitate the removal of the pulled steel bar sleeve. The reverse mechanism 9 includes a reverse fixed block 91, a reverse movable block 92, an equal-height screw rod 93 and a reverse torsion spring 94. The reverse fixed block 91 is fixedly connected to the surface of the lower cover 5 through two bolts. The reverse movable block 92 is placed on the surface of the movable claw 7, and a reverse torsion spring 94 is arranged at the bottom end of the reverse movable block 92. The top end of the reverse torsion spring 94 is inserted and fixed with the reverse movable block 92, and at the same time, the other end of the reverse torsion spring 94 is in close contact with the surface of the movable claw 7; an equal-height screw rod 93 is arranged above the reverse movable block 92, and the bottom end of the equal-height screw rod 93 passes through the reverse movable block 92 and the reverse torsion spring 94 and is screwed with the surface of the movable claw 7.

[0030] During implementation, under the elastic force of the reverse torsion spring 94 sleeved on the equal-height screw rod 93 and blocked and supported by the reverse fixed block 91 and the reverse movable block 92, the movable claw 7 is pushed to overcome the outward elastic force of the claw torsion spring 73 and make it close to the inner wall of the gear ring 6. At this time, the clamping point of the movable claw 7 will be flush with the opening on one side of the gear ring 6, which is convenient for taking out the steel bar sleeve.

[0031] Further, as Figure 2 and Figure 6As shown, a fixed claw 8 is provided at one end of the gear ring 6 away from the movable claw 7. The fixed claw 8 and the movable claw 7 cooperate with each other for the clamping work of the steel bar sleeve. Convex surfaces 81 are provided on both sides of the surface of the fixed claw 8. When the fixed claw 8 is installed with the gear ring 6, the convex surfaces 81 block the surface of the gear ring 6 to limit the freedom degree of the fixed claw 8 in the vertical upward direction. Two shim screws 82 are threadedly connected to the surface of the gear ring 6. After the shim screws 82 are tightened, the fixed claw 8 is pressed to limit the freedom degree of the fixed claw 8 in the vertical downward direction.

[0032] When installing the fixed claw 8, insert the fixed claw 8 into the groove of the gear ring 6. The convex surfaces 81 will block the surface of the gear ring 6 to limit the freedom degree of the fixed claw 8 in the vertical upward direction. Then rotate the two shim screws 82. After the shim screws 82 are tightened, the fixed claw 8 is pressed to limit the freedom degree of the fixed claw 8 in the vertical downward direction, thus completing the installation of the fixed claw 8 and solving the problem that the existing fixed claw 8 needs to be fixed by bolts on both the upper and lower sides during installation.

[0033] Working principle: During use, first, the elastic force of the claw torsion spring 73 is used to push the movable claw 7 and the fixed claw 8 to cooperate to clamp the steel bar sleeve to be turned. Then press the switch on the surface of the battery handle 1, and the battery handle 1 controls the servo motor 2 to rotate forward. The servo motor 2 drives the gear ring 6 to rotate under the action of the transmission mechanism 10. When the gear ring 6 rotates, it will be wear-resistant under the action of the upper wear-resistant piece 61 and the lower wear-resistant piece 62. When the gear ring 6 rotates, it will drive the steel bar sleeve clamped on the surfaces of the movable claw 7 and the fixed claw 8 to rotate to achieve tightening. When the tool needs to be withdrawn after tightening, the battery handle 1 controls the servo motor 2 to rotate in reverse. When the servo motor 2 rotates in reverse, the opening of the gear ring 6 will be flush with the openings of the lower cover 5 and the upper cover 4. At the same time, the movable claw 7 is opened through the reverse mechanism 9 to ensure that the clamping point of the movable claw 7 is flush with the openings of the gear ring 6 and the lower cover 5, so as to facilitate the easy withdrawal of the tightening tool.

[0034] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. An electric wrench for steel bar sleeves, comprising a battery handle (1), characterized in that: A servo motor (2) is installed at the top of the battery handle (1), and a transfer gearbox (3) is installed at one end of the servo motor (2) through four screws; one end of the transfer gearbox (3) is inserted with an upper cover (4) and a lower cover (5). A toothed ring (6) is arranged on one side inside the upper cover (4) and the lower cover (5), and the toothed ring (6) is driven by a transmission mechanism (10) to rotate with the servo motor (2) to achieve rotational work; one end inside the toothed ring (6) is hinged with a movable claw (7) through a pin rod (71), and a claw torsion spring (73) is sleeved on the surface of the pin rod (71). One end of the claw torsion spring (73) is attached to the surface of the movable claw (7), and the other end of the claw torsion spring (73) is inserted and fastened to the surface of the toothed ring (6); a reverse mechanism (9) is arranged between the movable claw (7) and the lower cover (5), and the reverse mechanism (9) is used for the reverse work of the movable claw (7); a fixed claw (8) is arranged at one end of the toothed ring (6) away from the movable claw (7), and the fixed claw (8) cooperates with the movable claw (7) to hold the steel bar sleeve tightly. The upper cover (4) and the lower cover (5) are fixedly connected to the transfer gearbox (3) through screws, and the upper cover (4) and the lower cover (5) are fixed by screws; the pin rod (71) is inserted from the upper surface of the movable claw (7), passes through the toothed ring (6), passes out from the lower surface of the movable claw (7), and is inserted with a pin (72). The reverse mechanism (9) includes a reverse fixed block (91), a reverse movable block (92), an equal-height screw (93), and a reverse torsion spring (94). The reverse fixed block (91) is fixedly connected to the surface of the lower cover (5) through two bolts.

2. The electric wrench for steel bar sleeves according to claim 1, wherein: A rear suspension hook (31) is fixed between the servo motor (2) and two screws at the top of the transfer gearbox (3). A front suspension hook (41) is fixed to the surface of the upper cover (4) by screws, and the cooperation of the rear suspension hook (31) and the front suspension hook (41) facilitates the suspension work of the electric wrench.

3. The electric wrench for steel bar sleeves according to claim 1, wherein: An upper wear-resistant plate (61) is arranged on the upper surface of the toothed ring (6), and the upper wear-resistant plate (61) is fixedly connected to the inner wall of the upper cover (4) by screws. A lower wear-resistant plate (62) is arranged on the lower surface of the toothed ring (6), and the lower wear-resistant plate (62) is fixedly connected to the inner wall of the lower cover (5) by screws. The upper wear-resistant plate (61) and the lower wear-resistant plate (62) cooperate for the wear-resistant work of the toothed ring (6) during rotation.

4. The electric wrench for steel bar sleeves according to claim 1, characterized in that: Convex platforms (81) are arranged on both sides of the surface of the fixed claw (8). When the fixed claw (8) is installed with the toothed ring (6), the convex platforms (81) block the surface of the toothed ring (6) to limit the freedom degree of the fixed claw (8) in the vertical upward direction. Two gasket screws (82) are threadedly connected to the surface of the toothed ring (6), and after the gasket screws (82) are tightened, the fixed claw (8) is pressed to limit the freedom degree of the fixed claw (8) in the vertical downward direction.

5. The electric wrench for steel bar sleeves according to claim 1, characterized in that: A reverse movable block (92) is placed on the surface of the movable claw (7), a reverse torsion spring (94) is arranged at the bottom end of the reverse movable block (92), the top end of the reverse torsion spring (94) is fixedly inserted into the reverse movable block (92), and the other end of the reverse torsion spring (94) is in close contact with the surface of the movable claw (7); an equal-height screw rod (93) is arranged above the reverse movable block (92), and the bottom end of the equal-height screw rod (93) penetrates through the reverse movable block (92) and the reverse torsion spring (94) and is screwed on the surface of the movable claw (7).

6. The electric wrench for steel bar sleeves according to claim 1, characterized in that: The transmission mechanism (10) includes a transmission shaft (11), a small bevel gear (12), a large bevel gear (13), a driving gear (14) and an idle gear (15). The transmission shaft (11) is connected inside the adapter gearbox (3) through two bearings, and one end of the transmission shaft (11) is fixedly connected to the output end of the servo motor (2). One end of the upper cover (4) and the lower cover (5) is connected with a small bevel gear (12) through two bearings, and the small bevel gear (12) is fixedly inserted into the transmission shaft (11).

7. The electric wrench for steel bar sleeves according to claim 6, characterized in that: A large bevel gear (13) is installed inside the lower cover (5) through a bearing, and the large bevel gear (13) meshes with the small bevel gear (12). A driving gear (14) is fixedly inserted at the top end of the large bevel gear (13). Four idle gears (15) are installed inside the lower cover (5) and the upper cover (4) through bearings. The two front idle gears (15) are both meshed with the toothed ring (6), the two rear idle gears (15) are both meshed with the driving gear (14), and the two groups of front and rear idle gears (15) are meshed with each other.

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