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 control handle, a battery is detachably installed at the bottom of the control handle, a servo motor is installed at the top end of the control handle, and an adapter gearbox is fixed to the surface of the servo motor through bolts. A lower face cover is arranged on one side of the transfer gearbox, an upper face cover is fixed to the top end of the lower face cover through bolts, wear-resisting rings are installed on the inner walls of the interiors of the lower face cover and the upper face cover correspondingly, a gear ring is rotationally connected between every two adjacent wear-resisting rings, and a transmission mechanism is arranged on the side, located on the gear ring, between every two adjacent wear-resisting rings. A movable claw is hinged to the inner wall of the gear ring through a pin rod, and a fixed claw is detachably installed on the side, away from the movable claw, of the gear ring. According to the utility model, the insert and the fixing claw can be quickly disassembled and assembled, and the electric wrench can be conveniently withdrawn after being tightened, so that the labor intensity of the electric wrench in use is reduced.

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 necessary tool for tightening rebar sleeves. Electric wrenches are mainly used in the steel structure installation industry, specifically for installing steel structure rebar sleeves or high-strength bolts. Rebar sleeves or high-strength bolts are used to connect steel structure joints, usually in the form of bolt groups.

[0003] The inserts of existing electric wrenches are all fixed by bolts, which makes it inconvenient to replace the inserts after they are worn, increasing the labor intensity when using the electric wrench; and the existing electric wrench is more cumbersome to withdraw the wrench tool after tightening the steel sleeve, and requires a lot of force to remove it, which brings great trouble to people's use. Utility Model Content

[0004] The utility model aims to provide a steel bar sleeve electric wrench to solve the problems in the background technology mentioned above that the inserts of the existing electric wrench are not convenient to replace and the steel bar sleeve is complicated to remove.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a steel bar socket electric wrench, comprising a control handle, a battery is detachably installed at the bottom of the control handle; a servo motor is installed at the top of the control handle; a transfer box is fixed to the surface of the servo motor by bolts, a lower cover is provided on one side of the transfer box, and an upper cover is fixed to the top of the lower cover by bolts, and one end of the lower cover and the upper cover extends to the interior of the transfer box and is fixed by bolts; wear-resistant rings are installed on the inner walls of the lower cover and the upper cover, and gear rings are rotatably connected between adjacent wear-resistant rings, and a transmission mechanism is provided on one side of the gear ring between adjacent wear-resistant rings, and the transmission mechanism is used to transmit the power of the servo motor to the gear ring to realize rotation; a movable claw is hinged on the inner wall of the gear ring by a pin rod, and a fixed claw is detachably installed on the side of the gear ring away from the movable claw.

[0006] Preferably, an insert is inserted inside the movable claw, an insert quick-release structure is installed on the surface of the gear ring, and the bottom of the insert quick-release structure presses the top of the insert to fix it, and the insert quick-release structure facilitates the disassembly and assembly of the insert.

[0007] Preferably, a movable claw torsion spring is sleeved on the surface of the pin rod, and one end of the movable claw torsion spring is tightly attached to the surface of the movable claw, and the other end of the movable claw torsion spring is plugged and fixed to the surface of the gear ring. The movable claw torsion spring is used to push the movable claw to drive the insert to cooperate with the fixed claw to clamp the part to be pulled.

[0008] Preferably, a reversal positioning assembly is provided between the bottom of the insert and the lower cover, and the reversal positioning assembly is used to overcome the elastic force of the torsion spring of the movable claw so that the insert is flush with the openings on one side of the lower cover and the upper cover to facilitate the removal of the part to be pulled.

[0009] Preferably, a fixing claw quick-release structure is connected to the bottom of the fixing claw, and the fixing claw quick-release structure facilitates the disassembly and assembly of the fixing claw.

[0010] Preferably, the transmission mechanism is composed of small bevel teeth, large bevel teeth, active teeth and idle teeth, the small bevel teeth are installed on the inner walls of the lower cover and the upper cover through bearings, and the output shaft end of the servo motor passes through the adapter gear box and is plugged and fixed with one end of the small bevel teeth.

[0011] Preferably, large bevel teeth that can rotate circumferentially are installed inside the lower cover via bearings, and the large bevel teeth and small bevel teeth are meshed with each other.

[0012] Preferably, a driving tooth that can rotate circumferentially is installed on the surface of the upper cover via a bearing, and the bottom end of the driving tooth and the large bevel tooth are plugged and fixed to each other.

[0013] Preferably, two groups of idle teeth are arranged on the surface between the wear-resistant rings, and each group of idle teeth is provided with two idle teeth, two adjacent idle teeth are meshed with each other, and the front and rear two idle teeth of each group are respectively meshed with the gear ring and the active teeth.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the steel bar socket electric wrench facilitates the disassembly, assembly and replacement of the inserts through the insert quick-release structure. When the insert quick-release structure is in use, the pressure block in the insert quick-release structure is manually rotated so that the pressure block and the insert are staggered, and the insert can be pulled out. When replacing, the pressure block is pushed by the quick-release torsion spring to press the top of the new insert for installation; at the same time, the disassembly, assembly and replacement of the fixed claw is completed through the fixed claw quick-release structure. When the fixed claw quick-release structure is in use, the locking pin in the fixed claw quick-release structure is pressed, and the locking pin presses the wedge downward The block is removed to disengage it from the wedge opening of the fixed claw, and the fixed claw can be pulled out. When replacing, a new fixed claw is inserted, and the spring in the fixed claw quick-release structure will push the wedge block to cooperate with the wedge opening of the new fixed claw to complete the installation; the utility model also provides a reversal positioning component. When the reversal positioning component is implemented, the movable block in the reversal positioning component is blocked by the fixed block on the surface of the lower cover, so that the reversal torsion spring drives the movable claw to overcome the outward elastic force of the movable claw torsion spring and retreat until the clamping point of the insert is flush with the opening of the gear ring, which is convenient for the withdrawal of the electric wrench. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2Schematic structural diagram of the inverted state of the present utility model;

[0017] Figure 3 Schematic structural diagram of the partial separation state of the present utility model;

[0018] Figure 4 Schematic enlarged structural diagram of a part of the present utility model;

[0019] Figure 5 Schematic enlarged structural diagram of the transmission mechanism of the present utility model;

[0020] Figure 6 Schematic enlarged exploded view of the gear ring of the present utility model;

[0021] Figure 7 Schematic enlarged exploded view of the movable claw of the present utility model.

[0022] In the figure: 1, control handle; 2, battery; 3, servo motor; 4, adapter gearbox; 5, lower cover; 6, upper cover; 7, gear ring; 8, movable claw; 801, pin rod; 802, movable claw torsion spring; 81, insert; 82, insert quick-release structure; 83, reverse positioning component; 9, fixed claw; 91, fixed claw quick-release structure; 10, transmission mechanism; 101, small bevel gear; 102, large bevel gear; 103, driving gear; 104, idle gear; 11, wear-resistant ring. Specific embodiments

[0023] 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 the embodiments. In addition, the terms "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 detachable connection, 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 of 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.

[0024] The structure of the electric wrench for steel bar sleeves provided by the present utility model is as Figure 1 and Figure 2As shown in the figure, it includes a control handle 1. A battery 2 is detachably installed at the bottom of the control handle 1, and the output end of the battery 2 is electrically connected to the input end of the control handle 1; a servo motor 3 is installed at the top of the control handle 1, and the input end of the servo motor 3 is electrically connected to the output end of the control handle 1, and the input end of the servo motor 3 is also electrically connected to the output end of the battery 2; a transfer gearbox 4 is fixed on the surface of the servo motor 3 by bolts. A bottom cover 5 is arranged on one side of the transfer gearbox 4, and a top cover 6 is fixed on the top of the bottom cover 5 by bolts. One end of the bottom cover 5 and the top cover 6 extends into the interior of the transfer gearbox 4 and is fixed by bolts.

[0025] During implementation, press the forward rotation switch of the control handle 1. The control handle 1 drives the servo motor 3 to rotate forward under the action of the power provided by the battery 2.

[0026] Furthermore, as Figure 4 and Figure 5 shown in the figure, wear-resistant rings 11 are installed on the inner walls of the bottom cover 5 and the top cover 6. A toothed ring 7 is rotatably connected between adjacent wear-resistant rings 11. A transmission mechanism 10 is arranged on one side of the toothed ring 7 between adjacent wear-resistant rings 11. The transmission mechanism 10 is used to transmit the power of the servo motor 3 to the toothed ring 7 to achieve rotation. The transmission mechanism 10 is composed of a small bevel gear 101, a large bevel gear 102, a driving gear 103 and an idle gear 104. The small bevel gear 101 is installed on the inner walls of the bottom cover 5 and the top cover 6 through bearings. The output shaft end of the servo motor 3 penetrates through the transfer gearbox 4 and is inserted and fixed to one end of the small bevel gear 101. The large bevel gear 102 that can rotate circumferentially is installed in the interior of the bottom cover 5 through a bearing, and the large bevel gear 102 meshes with the small bevel gear 101. The driving gear 103 that can rotate circumferentially is installed on the surface of the top cover 6 through a bearing, and the bottom end of the driving gear 103 is inserted and fixed to the large bevel gear 102. Two groups of idle gears 104 are arranged on the surfaces between the wear-resistant rings 11, and each group of idle gears 104 has two. Two adjacent idle gears 104 mesh with each other, and the front and rear of each group of idle gears 104 mesh with the toothed ring 7 and the driving gear 103 respectively.

[0027] During implementation, when the servo motor 3 rotates forward, it will drive the toothed ring 7 to rotate under the action of the transmission mechanism 10, so that the steel bar sleeve rotates to complete the rotary disassembly and assembly work of the steel bar sleeve.

[0028] Furthermore, as Figure 6 shown in the figure, a movable claw 8 is hinged to the inner wall of the toothed ring 7 through a pin rod 801. An insert 81 is inserted into the interior of the movable claw 8. An insert quick-release structure 82 is installed on the surface of the toothed ring 7, and the bottom of the insert quick-release structure 82 presses and fixes the top end of the insert 81. The insert quick-release structure 82 facilitates the disassembly and assembly work of the insert 81. The insert quick-release structure 82 includes a pressing block, a pin for limiting the pressing block on the movable claw 8, and a quick-install torsion spring fixed between the pressing block and the movable claw 8.

[0029] During implementation, insert the steel bar sleeve into the interior of the tooth ring 7. After insertion, under the elastic force of the movable claw torsion spring 802, push the movable claw 8 to drive the insert 81 around the pin 801 to cooperate with the fixed claw 9 to tightly hold the steel bar sleeve. By manually rotating the pressing block in the insert quick-release structure 82, the pressing block is displaced from the insert 81, and then the insert 81 can be pulled out. During replacement, the new insert 81 can be installed by using the quick-installation torsion spring to push the pressing block to press-fit the top of the new insert 81.

[0030] Further, as Figure 2 and Figure 7 shown, a reverse positioning component 83 is provided between the bottom of the insert 81 and the lower cover 5. The reverse positioning component 83 is used to overcome the elastic force of the movable claw torsion spring 802 to make the insert 81 flush with the opening on one side of the lower cover 5 and the upper cover 6, facilitating the removal of the component to be turned. The reverse positioning component 83 is composed of a movable block, a pin for installing the movable block on the movable claw 8, a reverse torsion spring installed between the movable block and the movable claw 8, and a fixed block installed on the surface of the lower cover 5.

[0031] During implementation, the movable block in the reverse positioning component 83 blocks against the fixed block on the surface of the lower cover 5, so that the reverse torsion spring drives the movable claw 8 to overcome the outward elastic force of the movable claw torsion spring 802 and retract until the clamping point of the insert 81 is flush with the opening of the tooth ring 7. At this time, it is convenient for the electric wrench to withdraw.

[0032] Further, as Figure 3 and Figure 6 shown, a fixed claw 9 with a wedge opening is detachably installed on the side of the tooth ring 7 away from the movable claw 8. The surface of the pin 801 is sleeved with a movable claw torsion spring 802, and one end of the movable claw torsion spring 802 is in close contact with the surface of the movable claw 8, and the other end of the movable claw torsion spring 802 is inserted and fixed on the surface of the tooth ring 7. The movable claw torsion spring 802 is used to push the movable claw 8 to drive the insert 81 to cooperate with the fixed claw 9 to tightly hold the component to be turned under the support of the tooth ring 7. A fixed claw quick-release structure 91 is connected to the bottom of the fixed claw 9, and the fixed claw quick-release structure 91 facilitates the disassembly and assembly of the fixed claw 9. The fixed claw 9 is composed of a cover installed on the surface of the fixed claw 9, a locking pin inserted on the surface of the cover, a wedge block movably arranged on the surface of the fixed claw 9, and a spring between the fixed claw 9 and the wedge block.

[0033] During implementation, press the locking pin in the fixed claw quick-release structure 91, the locking pin presses down the wedge block to disengage it from the wedge opening of the fixed claw 9, and then the fixed claw 9 can be pulled out. During replacement, insert the new fixed claw 9, and the spring in the fixed claw quick-release structure 91 will push the wedge block to cooperate with the wedge opening of the new fixed claw 9 to complete the installation.

[0034] Working principle: When in use, first insert the steel bar sleeve into the inside of the tooth ring 7. After insertion, the elastic force of the movable claw torsion spring 802 pushes the movable claw 8 to drive the insert 81 around the pin rod 801 to cooperate with the fixed claw 9 to tightly hold the steel bar sleeve. Subsequently, press the forward rotation switch of the control handle 1. Under the action of the electric power provided by the battery 2, the control handle 1 controls the servo motor 3 to rotate forward. When the servo motor 3 rotates forward, it drives the tooth ring 7 to rotate under the action of the transmission mechanism 10. The tooth ring 7 drives the movable claw 8 and the fixed claw 9 to rotate simultaneously, causing the steel bar sleeve to rotate, thus completing the rotation disassembly and assembly work of the steel bar sleeve.

[0035] When the electric wrench for steel bar sleeves is in use, the insert quick-release structure 82 facilitates the disassembly and replacement of the insert 81. When the insert quick-release structure 82 is in use, manually rotate the pressing block in the insert quick-release structure 82 to stagger the pressing block from the insert 81, and then pull out the insert 81. When replacing, the new insert 81 can be installed by pushing the pressing block down by the quick-install torsion spring to press-fit the top of the new insert 81. At the same time, the fixed claw quick-release structure 91 completes the disassembly and replacement of the fixed claw 9. When the fixed claw quick-release structure 91 is in use, press the locking pin in the fixed claw quick-release structure 91. The locking pin presses down the wedge block to disengage it from the wedge opening of the fixed claw 9, and then pull out the fixed claw 9. When replacing, insert the new fixed claw 9, and the spring in the fixed claw quick-release structure 91 will push the wedge block to cooperate with the wedge opening of the new fixed claw 9 to complete the installation.

[0036] After tightening, the electric wrench needs to be withdrawn from the steel bar or the sleeve. At this time, the servo motor 3 rotates in reverse, making the opening of the tooth ring 7 flush with the openings of the lower cover 5 and the upper cover 6. At the same time, to facilitate the withdrawal of the electric wrench, the present invention is provided with a reverse rotation positioning component 83. When the reverse rotation positioning component 83 is implemented, the movable block in the reverse rotation positioning component 83 blocks against the fixed block on the surface of the lower cover 5, causing the reverse rotation torsion spring to drive the movable claw 8 to overcome the outward elastic force of the movable claw torsion spring 802 and retract until the clamping point of the insert 81 is flush with the opening of the tooth ring 7. At this time, it is convenient to withdraw the electric wrench.

[0037] 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 without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, 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, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A steel bar socket electric wrench, comprising a control handle (1), characterized in that: A battery (2) is detachably mounted on the bottom of the control handle (1), a servo motor (3) is mounted on the top of the control handle (1), a transfer box (4) is fixed to the surface of the servo motor (3) by bolts, a lower cover (5) is provided on one side of the transfer box (4), and an upper cover (6) is fixed to the top of the lower cover (5) by bolts, and one end of the lower cover (5) and the upper cover (6) extends to the interior of the transfer box (4) and is fixed by bolts; the lower cover (5) and the upper cover (6) Wear-resistant rings (11) are installed on the inner wall of the interior, and adjacent wear-resistant rings (11) are rotatably connected with toothed rings (7), and a transmission mechanism (10) is arranged between adjacent wear-resistant rings (11) on one side of the toothed ring (7), and the transmission mechanism (10) is used to transmit the power of the servo motor (3) to the toothed ring (7) so as to realize rotation; a movable claw (8) is hinged on the inner wall of the toothed ring (7) through a pin rod (801), and a fixed claw (9) is detachably installed on the side of the toothed ring (7) away from the movable claw (8).

2. The steel bar socket electric wrench according to claim 1, characterized in that: An insert (81) is inserted into the interior of the movable claw (8), and an insert quick-release structure (82) is installed on the surface of the gear ring (7). The bottom of the insert quick-release structure (82) presses the top of the insert (81) to achieve fixation, and the insert quick-release structure (82) facilitates the disassembly and assembly of the insert (81).

3. The steel bar socket electric wrench according to claim 1, characterized in that: The surface of the pin rod (801) is sleeved with a movable claw torsion spring (802), and one end of the movable claw torsion spring (802) is in close contact with the surface of the movable claw (8), and the other end of the movable claw torsion spring (802) is plugged and fixed to the surface of the gear ring (7). The movable claw torsion spring (802) is used to push the movable claw (8) to drive the insert (81) to cooperate with the fixed claw (9) to clamp the part to be pulled.

4. The steel bar socket electric wrench according to claim 2, characterized in that: A reversal positioning assembly (83) is provided between the bottom of the insert (81) and the lower cover (5), and the reversal positioning assembly (83) is used to overcome the elastic force of the movable claw torsion spring (802) so that the insert (81) is flush with the openings on one side of the lower cover (5) and the upper cover (6) to facilitate the removal of the to-be-moved member.

5. The steel bar socket electric wrench according to claim 1, characterized in that: The bottom of the fixing claw (9) is connected to a fixing claw quick-release structure (91), and the fixing claw quick-release structure (91) facilitates the assembly and disassembly of the fixing claw (9).

6. The steel bar socket electric wrench according to claim 1, characterized in that: The transmission mechanism (10) is composed of small bevel gears (101), large bevel gears (102), active gears (103) and idle gears (104); the small bevel gears (101) are mounted on the inner walls of the lower cover (5) and the upper cover (6) via bearings; and the output shaft end of the servo motor (3) passes through the adapter gear box (4) and is plugged and fixed to one end of the small bevel gear (101).

7. The steel bar socket electric wrench according to claim 6, characterized in that: A large bevel gear (102) that can rotate in a circumferential direction is installed inside the lower cover (5) via a bearing, and the large bevel gear (102) and the small bevel gear (101) are meshed with each other.

8. The steel bar socket electric wrench according to claim 7, characterized in that: A driving tooth (103) capable of circumferential rotation is mounted on the surface of the upper cover (6) via a bearing, and the bottom end of the driving tooth (103) is plugged and fixed to the large bevel tooth (102).

9. The steel bar socket electric wrench according to claim 8, characterized in that: Two groups of idle teeth (104) are arranged on the surface between the wear-resistant rings (11), and each group of idle teeth (104) is provided with two, two adjacent idle teeth (104) are meshed with each other, and the front and rear two of each group of idle teeth (104) are respectively meshed with the gear ring (7) and the active teeth (103).

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