Tightening device with multi-power output

Abstract

The invention provides a multi-power output tightening device, and relates to the technical field of mechanical tools, the multi-power output tightening device comprises a gear box mechanism, an input port is formed in the middle of the gear box mechanism, transverse moving mechanisms are detachably connected to the periphery of the gear box mechanism, and each transverse moving mechanism comprises a transverse frame, a worm and a worm gear; the worm is in shaft power connection with the gear box mechanism, a wheel frame is connected to the transverse frame in a sliding mode, and the worm gear is rotationally connected with the wheel frame. According to the device, the worm gear can move in the axial direction of the worm to obtain stepless radial adjustment through transverse movement of the wheel frame where the worm gear is located, after the transverse frame is locked by the locking mechanism, an external screw wrench can drive the worm to rotate through the gear box mechanism, and then the worm gear is driven to rotate; and then the corresponding wrench mechanism is driven to rotate to achieve the tightening action, the effect of one input and multiple outputs is achieved, the working efficiency is improved, the output distance is adjustable, and the universality is improved.

Description

Technical Field

[0001] The present application relates to the technical field of mechanical tools, and in particular to a tightening device with multiple power outputs. Background Art

[0002] Screw tightening guns are widely used in the assembly of parts in manufacturing industries such as automobiles, motorcycles, ships, aircraft, and home appliances. Currently, a screw tightening gun can only output one power, and if two screws need to be tightened on the engine connecting rod, the operation needs to be done twice, which affects the assembly efficiency. Summary of the invention

[0003] In order to overcome the existing deficiencies, an embodiment of the present application provides a tightening device with multiple power outputs, which can solve the problems mentioned in the above background technology.

[0004] The technical solution adopted by the embodiment of the present application to solve its technical problem is: a tightening device with multiple power outputs, including a gearbox mechanism, an input port is arranged in the middle of the gearbox mechanism, and transverse movement mechanisms are detachably connected to the four sides of the gearbox mechanism, and the transverse movement mechanism includes a cross frame, a worm and a worm wheel, the worm is dynamically connected to the shaft of the gearbox mechanism, a wheel frame is slidably connected to the cross frame, the worm wheel is rotationally connected to the wheel frame, a locking mechanism is arranged on the wheel frame, the worm wheel is meshed with the worm, an output port is opened on the worm wheel, and a wrench mechanism is arranged on the output port.

[0005] In a specific implementation, the gear box mechanism includes a box body and a box cover, the box cover is screwed to the box body, and the cross frame is screwed to the box body and the box cover.

[0006] In a specific embodiment, the gearbox mechanism further includes a driving gear and a driven gear, the driving gear meshes with the driven gear, the driving gear and the driven gear are both rotatably connected to the box body, and the driving gear and the driven gear are both provided with hexagonal sockets.

[0007] In a specific implementation manner, a torque adjustment mechanism is provided at one end of the worm, and the input end of the torque adjustment mechanism is configured as an external hexagonal socket that is plugged into the internal hexagonal socket of the driven gear.

[0008] In a specific implementation manner, the wheel frame is dovetail-slidingly connected to the cross frame, and the locking mechanism is a clevis screw, which is threadedly connected to the wheel frame and pressed against the cross frame.

[0009] In a specific embodiment, the wrench mechanism includes a ribbed rod, and the ribbed rod is plugged into the worm gear.

[0010] In a specific embodiment, a spring is provided between the rib rod and the worm gear, and the spring is sleeved on the rib rod.

[0011] In a specific embodiment, a spring pin is provided at the upper end of the rib rod, and the spring pin abuts against the end face of the worm gear.

[0012] In a specific implementation manner, a quick connector is provided at the lower end of the prism, and a socket wrench is plugged into the quick connector.

[0013] In a specific embodiment, a handle is detachably connected to the gear box mechanism.

[0014] The advantages of the embodiments of the present application are:

[0015] By utilizing the lateral movement of the wheel frame where the worm wheel is located, the worm wheel can move along the axial direction of the worm to obtain stepless radial adjustment. When the horizontal frame is locked by the locking mechanism, the external screw wrench can drive the worm to rotate through the gear box mechanism, and then drive the worm wheel to rotate, and then drive the corresponding wrench mechanism to rotate to achieve tightening action, realizing the effect of one input and multiple outputs, improving work efficiency, and the output spacing is adjustable, which improves versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of a tightening device with multiple power outputs provided in an embodiment of the present application;

[0017] Figure 2 A schematic diagram of the connection relationship between the gearbox mechanism and the input port provided in the embodiment of the present application;

[0018] Figure 3 A schematic diagram of the connection relationship between the lateral movement mechanism and the wrench mechanism provided in the embodiment of the present application;

[0019] Figure 4 A schematic diagram of the wrench mechanism structure provided in an embodiment of the present application.

[0020] In the figure: 10-gearbox mechanism; 11-box body; 12-box cover; 13-driving gear; 14-driven gear; 20-transverse mechanism; 21-cross frame; 22-worm; 23-worm wheel; 24-wheel frame; 25-torque adjustment mechanism; 26-shock screw; 27-anti-slip groove; 28-teeth; 30-wrench mechanism; 31-rib rod; 32-spring; 33-elastic pin; 34-socket wrench; 35-reaching platform; 40-input port; 50-handle. DETAILED DESCRIPTION

[0021] The technical solution in the embodiment of the present application is to solve the problems mentioned in the above background technology, and the overall idea is as follows:

[0022] See also Figure 1-Figure 4 A tightening device with multiple power outputs includes a gear box mechanism 10, an input port 40 is arranged in the middle of the gear box mechanism 10, and transverse mechanisms 20 are detachably connected to the four sides of the gear box mechanism 10. The transverse mechanism 20 includes a cross frame 21, a worm 22 and a worm wheel 23. The worm 22 is connected to the shaft power of the gear box mechanism 10. A wheel frame 24 is slidably connected to the cross frame 21. The worm wheel 23 is rotationally connected to the wheel frame 24. A locking mechanism is arranged on the wheel frame 24. The worm wheel 23 is meshed with the worm 22. An output port is opened on the worm wheel 23, and a wrench mechanism 30 is arranged on the output port. Among them, by utilizing the lateral movement of the wheel frame 24 where the worm wheel 23 is located, the worm wheel 23 can move axially along the worm 22 to obtain stepless radial adjustment. When the cross frame 21 is locked by the locking mechanism, the external screw wrench can drive the worm 22 to rotate through the gear box mechanism 10, and then drive the worm wheel 23 to rotate, and then drive the corresponding wrench mechanism 30 to rotate to achieve the tightening action, realizing the effect of one input and multiple outputs, improving work efficiency, and the output spacing is adjustable, which improves versatility.

[0023] See also Figure 1-Figure 4 The gear box mechanism 10 includes a box body 11 and a box cover 12, the box cover 12 is screwed to the box body 11, and the cross frame 21 is screwed to the box body 11 and the box cover 12. Here, the box cover 12 is fixed to the box body 11 by screws, and screw holes are provided on the box body 11 and the box cover 12 for the installation of the cross frame 21. The box cover 12 is provided with a clamping strip for limiting position, so that it can be clamped at the opening of the box body 11 for accurate installation. The clamping strip is also used to enable the box cover 12 to obtain the horizontal support force given by the box body 11, so that the box cover 12 and the box body 11 are connected more tightly.

[0024] See also Figure 1-Figure 4 The gearbox mechanism 10 also includes a driving gear 13 and a driven gear 14, the driving gear 13 meshes with the driven gear 14, and the driving gear 13 and the driven gear 14 are both rotatably connected to the housing 11, and the driving gear 13 and the driven gear 14 are both provided with an inner hexagonal slot. Here, the inner hexagonal slot on the driving gear 13 is an input port 40, and the screw gun inputs power through the inner hexagonal slot to drive the four driven gears 14 to rotate, so that at most four-way power can be output. In this embodiment, the driving gear 13 and the driven gear 14 both use bevel gears to achieve the change of the rotation direction. Since the meshing of the worm 22 and the worm wheel 23 has a deceleration effect, the rotation speed is greatly reduced, so the driving gear 13 and the driven gear 14 use a large and small gear configuration, which has an effect of speeding up, so as to make up for the deceleration effect brought by the worm 22 and the worm wheel 23 as much as possible, so that the input port 40 and the wrench mechanism 30 maintain a similar rotation speed.

[0025] See also Figure 1-Figure 4A torque adjustment mechanism 25 is provided at one end of the worm 22, and the input end of the torque adjustment mechanism 25 is configured to be plugged into the hexagonal groove of the driven gear 14 with an external hexagon. Here, the torque adjustment mechanism 25 is a common mechanical clutch type, including a planetary gear set, a clutch and an adjustment ring. The clutch includes a torsion spring and a ring gear with a protrusion. The ring gear is meshed with the planetary gear set, and the torsion steel ring pushes the steel ball to press against the ring gear. The torsion spring can be compressed or released by twisting the adjustment ring, thereby adjusting the pressing force of the steel ball on the ring gear, and then adjusting the output torque. Since the steel ball is pressed against the protrusion of the ring gear, the ring gear remains stationary and can support the planetary gear set to output torque outward. When the wrench mechanism 30 has been tightened and reaches the corresponding torque, the resistance to the planetary gear set increases, and the steel ball cannot fix the ring gear. The ring gear will rotate with the planetary gear set, and the rotation transmitted from the input port 40 is consumed on the ring gear. At the same time, the planetary gear set can no longer output a higher torque. In this application, In order for the clutch to work properly, the worm wheel 23 needs to be able to prevent the worm 22 from rotating. Therefore, the smallest possible reduction ratio is used to minimize the self-locking effect of the worm wheel 23 and the worm 22. At the same time, the structural parameters of the worm wheel 23 and the worm 22 can be improved, such as optimizing the tooth shape, adjusting the number of teeth, etc., so that the lead angle of the worm 22 is greater than the equivalent friction angle between the meshing gear teeth, thereby eliminating the self-locking effect. The torque adjustment mechanism 25 is commonly used in hand drills and belongs to the prior art. Therefore, it is not shown in detail in the accompanying drawings. When the cross frame 21 is installed on the gear box mechanism 10, the outer hexagonal socket at the head end of the worm 22 is plugged into the inner hexagonal groove of the driven gear 14 to achieve a clutched power connection, which also plays a positioning role. Then, the cross frame 21 is installed on the box body 11 and the box cover 12 using screws.

[0026] See also Figure 1-Figure 4 The wheel frame 24 is dovetail-slidably connected with the cross frame 21, and the locking mechanism is a horn screw 26, which is screwed with the wheel frame 24 and pressed against the cross frame 21. Here, the spacing of the wrench mechanism 30 is adjusted and then inserted into the screw to be tightened, and finally the horn screw 26 is tightened. In this embodiment, the contact surface of the horn screw 26 and the cross frame 21 is provided with anti-slip grooves 27 to prevent the horn screw 26 from loosening. At the same time, the position where the wheel frame 24 and the cross frame 21 are fitted is provided with teeth 28. When the horn screw 26 is loose, a gap is formed between the wheel frame 24 and the cross frame 21, and the teeth 28 do not bite and can slide relatively. When the horn screw 26 is tightened, the gap between the wheel frame 24 and the cross frame 21 disappears, and the teeth 28 on both sides bite each other to form a stable connection to prevent the wheel frame 24 from shifting.

[0027] See also Figure 1-Figure 4The wrench mechanism 30 includes a ribbed rod 31, which is plugged into the worm gear 23. Here, the hexagonal hole in the worm gear 23 is an output port, and the ribbed rod 31 is directly inserted into the worm gear 23. The ribbed rod 31 rotates with the rotation of the worm gear 23 to achieve power connection.

[0028] See also Figure 1-Figure 4 A spring 32 is provided between the rib rod 31 and the worm wheel 23, and the spring 32 is sleeved on the rib rod 31. Here, the rib rod 31 directly passes through the worm wheel 23, and a stop 35 is provided at the lower end of the rib rod 31. One end of the spring 32 is against the cross frame 21, and the other end of the spring 32 is against the stop 35. The spring 32 keeps the rib rod 31 from moving downward, so as to adapt to different heights of the screws to be screwed.

[0029] See also Figure 1-Figure 4 , a spring pin 33 is arranged at the upper end of the prism 31, and the spring pin 33 abuts against the end face of the worm wheel 23. Here, the spring pin 33 is a triangular block structure, the tip of the spring pin 33 is connected to the prism 31, and a spring piece is arranged inside the lower end of the spring pin 33 to connect with the prism 31, so that when the spring pin 33 remains in the state of popping out, it can also be passively retracted into the prism 31, and when the prism is inserted into the worm wheel 23 from bottom to top, the spring pin 33 automatically retracts, and then unfolds to abut against the upper end face of the worm wheel 23, and the spring 32 abuts against the lower end face of the worm wheel 23, thereby maintaining the posture of the prism 31, and the prism 31 can also be retracted to adapt to the height of the screw to be screwed, and when the prism 31 needs to be replaced, the prism 31 can be pulled out by pinching the spring pin 33, so as to replace the prism 31 of different lengths.

[0030] See also Figure 1-Figure 4 A quick interface is provided at the lower end of the rib 31, and a socket wrench 34 is plugged into the quick interface. Here, the quick interface and the socket wrench 34 are both conventional structures, so as to adapt to the existing socket, and improve the adaptability. The quick interface has an elastic spherical protrusion, so that the main socket wrench 34 can be pressed tightly, so that it is not easy to fall off.

[0031] See also Figure 1-Figure 4 The gear box mechanism 10 is detachably connected with a handle 50. Here, when three or less wrench mechanisms 30 are arranged on the gear box mechanism 10, a handle 50 can be added to the original installation position to increase stability when held in hand.

[0032] When the present application is used: according to the number and position of screws to be tightened simultaneously, the corresponding transverse movement mechanism 20 and the wrench mechanism 30 are installed, and the wrench mechanism 30 is adjusted to align the screws to be tightened and inserted, and then the horn screw 26 is tightened to fix the position of the wheel frame 24, and then the external screw gun head is inserted into the input port 40 on the driving gear 13, and the driving gear 13 drives the four driven gears 14 to rotate, thereby driving the rotation of the corresponding screw rod, and then driving the rotation of the worm gear 23, and the worm gear 23 drives the edge rod 31 and then drives the socket wrench 34 to rotate to realize the tightening action. When individual screws reach the specified torque in advance, the torque adjustment mechanism 25 generates a power interruption to avoid the current screw exceeding the torque and causing structural damage, and the other wrench mechanisms 30 can continue to rotate to ensure that each screw to be tightened can reach the specified torque.

[0033] In summary, by utilizing the lateral movement of the wheel frame 24 where the worm wheel 23 is located, the worm wheel 23 can move axially along the worm 22 to obtain stepless radial adjustment. When the cross frame 21 is locked by the locking mechanism, the external screw wrench can drive the worm 22 to rotate through the gear box mechanism 10, and then drive the worm wheel 23 to rotate, and then drive the corresponding wrench mechanism 30 to rotate to achieve the tightening action, realizing the effect of one input and multiple outputs, improving work efficiency, and the output spacing is adjustable, which improves versatility.

[0034] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A tightening device with multiple power outputs, characterized in that: It includes a gear box mechanism, an input port is arranged in the middle of the gear box mechanism, and transverse movement mechanisms are detachably connected to the four sides of the gear box mechanism, the transverse movement mechanism includes a cross frame, a worm and a worm wheel, the worm is dynamically connected to the shaft of the gear box mechanism, a wheel frame is slidably connected to the cross frame, the worm wheel is rotationally connected to the wheel frame, a locking mechanism is arranged on the wheel frame, the worm wheel is meshed with the worm, an output port is arranged on the worm wheel, and a wrench mechanism is arranged on the output port.

2. The multi-power output tightening device according to claim 1, characterized in that: The gear box mechanism comprises a box body and a box cover, the box cover is screw-connected to the box body, and the cross frame is screw-connected to the box body and the box cover.

3. The multi-power output tightening device according to claim 2, characterized in that: The gear box mechanism also includes a driving gear and a driven gear, the driving gear is meshed with the driven gear, the driving gear and the driven gear are both rotatably connected to the box body, and the driving gear and the driven gear are both provided with an inner hexagonal groove.

4. The multi-power output tightening device according to claim 3, characterized in that: A torque regulating mechanism is arranged at one end of the worm, and an input end of the torque regulating mechanism is arranged as an external hexagonal member plugged into the internal hexagonal groove of the driven gear.

5. The multi-power output tightening device according to claim 4, characterized in that: The wheel frame is dovetail-slidingly connected to the cross frame, and the locking mechanism is a clevis screw, which is threadedly connected to the wheel frame and pressed against the cross frame.

6. The multi-power output tightening device according to claim 5, characterized in that: The wrench mechanism comprises a ribbed rod, and the ribbed rod is plugged into the worm gear.

7. The multi-power output tightening device according to claim 6, characterized in that: A spring is arranged between the rib rod and the worm wheel, and the spring is sleeved on the rib rod.

8. The multi-power output tightening device according to claim 7, characterized in that: An elastic pin is arranged at the upper end of the edge rod, and the elastic pin abuts against the end face of the worm wheel.

9. The multi-power output tightening device according to claim 8, characterized in that: A quick interface is arranged at the lower end of the rib rod, and a socket wrench is plugged into the quick interface.

10. The multi-power output tightening device according to claim 9, characterized in that: The gear box mechanism is detachably connected with a handle.

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