Self-suction fixed torque device suitable for narrow space

Abstract

The invention discloses a self-suction torque fixing device suitable for a narrow space, relates to the technical field of clamping tools, and aims to solve the technical problem that in the prior art, when nuts are manually tightened in the narrow space, the tightening degrees of a plurality of nuts are different, and the installation process of the device is affected. The self-suction fixed torque device comprises a base plate, a motor and a transmission gear assembly. The output end of the transmission gear assembly is an insulation adsorption gear which is used for adsorbing a nut to be installed, and the transmission gear assembly is driven by the motor to drive the insulation adsorption gear to rotate to complete installation of the nut. The transmission gear assembly is arranged at the working end of the base plate, the transmission gear assembly can stretch into a narrow space to complete nut installation, operation is easy, the motor is used for driving, the multiple nuts have the same screwing degree, and the installation technology is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of clamping tools, and in particular to a self-priming constant torque device suitable for narrow spaces. Background Art

[0002] Many existing devices have a narrow installation space during installation, and the existing wrenches cannot complete the installation of the nuts in the narrow space.

[0003] In existing operations, operators complete the installation of nuts by manually tightening nuts. Manually tightening nuts not only has low work efficiency, but also the tightening state of each nut is not uniform, which affects the installation process of the device.

[0004] Therefore, it is a technical problem that needs to be solved urgently by those skilled in the art if a self-priming constant torque device suitable for narrow spaces is provided to complete the installation of nuts in narrow spaces. Summary of the invention

[0005] In view of the above analysis, the present invention aims to provide a self-priming constant torque device suitable for narrow spaces, so as to solve the technical problem in the prior art that in narrow spaces, operators are required to manually tighten the nuts, which cannot ensure the tightening degree of the nuts and affects the installation process.

[0006] The purpose of the present invention is mainly achieved through the following technical solutions:

[0007] The present invention provides a self-priming constant torque device suitable for narrow spaces, which comprises a base plate, a motor and a transmission gear assembly; the base plate comprises a non-working end and a working end which can be extended into the narrow space; the transmission gear assembly is fixed on the working end, and the transmission gear assembly rotates under the drive of the motor; the output end of the transmission gear assembly is an insulating adsorption gear, and the insulating adsorption gear is used to adsorb the nut to be installed.

[0008] Furthermore, it also includes a cover plate, which is arranged opposite to the base plate; the transmission gear assembly is arranged between the cover plate and the base plate.

[0009] Furthermore, a through hole is provided on the cover plate, and the through hole matches the insulating adsorption gear.

[0010] Furthermore, the size of the through hole is larger than the size of the nut.

[0011] Furthermore, it also includes a supporting pad, which is arranged between the base plate and the cover plate.

[0012] Furthermore, the transmission gear assembly also includes a driving gear, a transmission gear and a limiting gear.

[0013] Furthermore, the driving gear is arranged at the output end of the motor.

[0014] Further, the transmission gear is meshed between the driving gear and the insulating adsorption gear.

[0015] Furthermore, the number of the limiting gears is 2.

[0016] Furthermore, it also includes a battery, which is electrically connected to the motor.

[0017] Furthermore, it also includes a nut assembly component arranged on the cover plate; the nut assembly component includes a box body, a pushing part and a rotating part; the box body is a rectangular parallelepiped structure with an open end, and the box body has a accommodating space for accommodating nuts, and multiple nuts are linearly arranged in the accommodating space, and a pushing part is arranged at one end of the accommodating cavity opposite to the opening, and the pushing part includes a first spring and a push plate, one end of the first spring is arranged on the end surface of the accommodating cavity opposite to the opening, and the other end of the first spring is arranged on one end surface of the push plate; the other end surface of the push plate is arranged to abut against the nut arranged in the accommodating space; the rotating part includes a rotating shaft, a rotating wheel, an inner ring, and an outer ring , a second spring, a wedge block and a toggle rod; the rotating shaft is vertically arranged on the lower end surface of the box body, and the rotating wheel is sleeved on the rotating shaft; the rotating wheel drives the rotating shaft to rotate; the inner ring is sleeved on the rotating shaft, and the inner ring rotates with the rotating shaft, and the upper end surface of the inner ring is provided with a slide groove, and the slide groove is arranged along the radial direction of the inner ring; the second spring is arranged in the slide groove, one end of the second spring is arranged on the rotating shaft, and the other end of the second spring is arranged on the wedge block; the outer ring is sleeved on the inner ring, and the inner wall of the outer ring is a wedge-shaped groove matching the wedge block; the toggle rod is arranged on the outer ring, and the two toggle rods are arranged at an angle of 90°.

[0018] A sliding block is arranged on the lower end of the box body.

[0019] A sliding groove is provided at a position of the cover plate corresponding to the sliding block;

[0020] A transmission rod is provided on the cover plate, and the transmission rod is provided close to the working end; when the box body reciprocates on the slide groove, the transmission rod is located on the movement path of the rotating wheel; a first thread is provided on the rotating wheel, and a second thread matching the first thread is provided on the transmission rod, and the transmission rod is meshed with the rotating wheel.

[0021] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0022] (1) The self-priming torque-fixing device suitable for narrow spaces provided by the present invention, during use, adsorbs the nut to be installed onto the insulating adsorption gear; extends the working end into the narrow space of the nut to be installed, starts the motor, the motor drives the transmission gear assembly to rotate, the insulating adsorption gear rotates, and the nut rotates with the insulating adsorption gear, and the nut is installed in the narrow space of the device. This embodiment is assembled by simple parts, has a simple structure, is easy to operate, and has a low manufacturing cost. It can complete the tightening torque processing of the nut without the help of complex special equipment.

[0023] (2) The self-priming constant torque device suitable for narrow spaces provided by the present invention is provided with a nut assembly component on the cover plate. After the nut is installed, the box body is pushed, and the rotating part rotates under the action of the transmission rod. As the outer ring of the toggle rod rotates, the nut in the box body is pushed out to the through hole position of the cover plate, and is adsorbed onto the insulating adsorption gear under the adsorption action of the magnet to install the second nut. The operator does not need to repeatedly take and install the nut. The nut assembly can be completed by pushing the box body. The operation is simple, and the installation of multiple nuts can be completed at the same time.

[0024] Other features and advantages of the present invention will be described in the following description, and part of them will become obvious from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are only for the purpose of illustrating the particular invention and are not to be considered as limiting the invention. The same reference symbols denote the same components throughout the accompanying drawings.

[0026] Figure 1 A schematic diagram of the structure of a self-priming constant torque device suitable for narrow spaces provided in the first embodiment of the present invention;

[0027] Figure 2 A schematic diagram of the structure of a transmission gear assembly in a self-priming constant torque device suitable for narrow spaces provided in Embodiment 1 of the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of a transmission gear assembly in a self-priming constant torque device suitable for narrow spaces provided in the second embodiment of the present invention;

[0029] Figure 4 A second structural schematic diagram of a transmission gear assembly in a self-priming constant torque device suitable for narrow spaces provided in the second embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the structure of the rotating part of the self-priming constant torque device suitable for narrow spaces provided in the second embodiment of the present invention;

[0031] Figure 6 The second structural schematic diagram of the rotating part in the self-priming constant torque device suitable for narrow space provided in the second embodiment of the present invention;

[0032] Figure 7 This is one of the structural schematic diagrams of the transmission gear assembly in the self-priming constant torque device suitable for narrow spaces provided in the third embodiment of the present invention;

[0033] Figure 8 This is the second structural schematic diagram of the transmission gear assembly in the self-priming constant torque device suitable for narrow spaces provided in the third embodiment of the present invention.

[0034] Reference numerals:

[0035] 1-base plate; 2-motor; 21-output shaft; 3-transmission gear assembly; 31-insulation adsorption gear; 311-strong magnet; 32-driving gear; 33-transmission gear; 34-limiting gear; 4-cover plate; 41-through hole; 42-slide groove; 43-transmission rod; 44-rack; 5-support pad; 6-battery; 7-nut assembly assembly; 71-box body; 711-baffle; 712-rotating shaft; 713-gear; 72-pushing part; 721-first spring; 722-push plate; 73-rotating part; 731-rotating shaft; 732-rotating wheel; 733-inner ring; 734-outer ring; 735-second spring; 736-wedge block; 737-toggle rod; 8-first bearing; 81-first groove; 9-connecting shaft; 91-matching block. DETAILED DESCRIPTION

[0036] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used to explain the principles of the present invention together with the present invention.

[0037] Embodiment 1

[0038] This embodiment provides a self-priming constant torque device suitable for narrow spaces, see Figure 1 to Figure 2 , including a base plate 1, a motor 2 and a transmission gear assembly 3; the base plate 1 includes a non-working end and a working end that can be extended into a narrow space; the transmission gear assembly 3 is fixed on the working end, and the transmission gear assembly 3 is arranged at the output end of the motor 2; the output end of the transmission gear assembly 3 is an insulating adsorption gear 31, and the insulating adsorption gear 31 is used to adsorb the nut to be installed.

[0039] A circle of strong magnets 311 is bonded to the upper end surface of the insulating adsorption gear 31 , and the thickness of the strong magnets 311 is preferably 1 mm.

[0040] The self-priming torque-fixing device suitable for narrow spaces described in this embodiment, when used, adsorbs the nut to be installed onto the insulating adsorption gear 31; extends the working end into the narrow space of the nut to be installed, starts the motor 2, and the motor 2 drives the transmission gear assembly 3 to rotate, and realizes the rotation of the insulating adsorption gear 31, and the nut rotates with the insulating adsorption gear 31, and the nut is installed on the device in the narrow space. This embodiment is assembled by simple parts, has a simple structure, is easy to operate, and has a low manufacturing cost. It can complete the tightening torque processing of the nut without the help of complex special equipment.

[0041] The self-priming torque-fixing device of this embodiment further includes a cover plate 4 , which is arranged opposite to the base plate 1 ; the transmission gear assembly 3 is arranged between the cover plate 4 and the base plate 1 .

[0042] The cover plate 4 and the base plate 1 are fixedly connected via a fixing member, and the transmission gear assembly 3 is arranged between the cover plate 4 and the base plate 1 . The distance between the cover plate 4 and the base plate 1 can meet the rotation of the transmission gear assembly 3 .

[0043] In the embodiment, a through hole 41 is formed on the cover plate 4 , and the through hole 41 matches the insulating adsorption gear 31 .

[0044] The nut to be installed is installed on the insulating adsorption gear 31 through the through hole 41. During operation, the nut is placed on the insulating adsorption gear 31 through the through hole 41, so that the nut can be installed in a narrow space, and the operation is simple and fast.

[0045] In the embodiment, the size of the through hole 41 is larger than the size of the nut.

[0046] In the embodiment, a supporting pad 5 is further included, and the supporting pad 5 is arranged between the substrate 1 and the cover plate 4 .

[0047] The thickness of the support pad 5 is equal to the thickness of the transmission gear assembly 3 , or the thickness of the support pad 5 is slightly greater than the thickness of the transmission gear assembly 3 , so as to meet the rotation requirement of the transmission gear assembly 3 .

[0048] In the embodiment, the transmission gear assembly 3 further includes a driving gear 32 , a transmission gear 33 and a limiting gear 34 .

[0049] The driving gear 32 is arranged at the output end of the motor 2, and the motor 2 drives the driving gear 32 to rotate, and the driving gear 32 drives the transmission gear 33 to rotate, and the transmission gear 33 is meshed with the insulating adsorption gear 31, and the transmission gear 33 drives the insulating adsorption gear 31 to rotate, and the insulating adsorption gear 31 drives the nut to be installed to rotate, so as to realize the installation of the nut; the driving gear 32, the transmission gear 33 and the limiting gear 34 are fixed between the base plate 1 and the cover plate 4, and the insulating adsorption gear 31 is clamped between the transmission gear 33 and the limiting gear 34, and the number of the limiting gears 34 is 2, and the 2 limiting gears 34 and the transmission gear 33 form a triangular fixed area, and the insulating adsorption gear 31 is firmly fixed between the limiting gear 34 and the transmission gear 33, and the fixing relationship is stable.

[0050] Embodiment 2

[0051] The self-priming constant torque device described in this embodiment is suitable for narrow spaces. Figures 3 to 6 , based on the first embodiment, it further includes a nut assembly component 7 disposed on the cover plate 4; the nut assembly component 7 includes a box body 71, a pushing portion 72 and a rotating portion 73; in order to better demonstrate the internal structure of the nut assembly component 7, Figure 3 The box body 71 is not provided with an upper end surface. Figure 4 The box body shown is provided with an upper end cover.

[0052] The box body 71 is a rectangular parallelepiped structure with one end open. The box body 71 has a storage space for accommodating nuts. Multiple nuts are arranged in the storage space. A pusher 72 is provided at one end of the storage cavity opposite to the opening. The pusher 72 includes a first spring 721 and a push plate 722. One end of the first spring 721 is provided on the end surface of the storage cavity opposite to the opening. The other end of the first spring 721 is provided on one end surface of the push plate 722. The other end surface of the push plate 722 is arranged against the nut arranged in the storage space. The box body 71 is used as a storage device for spare nuts. Its size can be selected according to actual use needs. The nuts can be arranged linearly in the storage space. When a spare nut is discharged from the opening, the first spring 721 pushes the push plate 722, and the push plate 722 pushes the nut of the candidate arrangement forward to fill the position. As long as there is a spare nut in the box body, a spare nut that can be used at any time is provided at the opening position of the box body 71.

[0053] The rotating part 73 includes a rotating shaft 731, a rotating wheel 732, an inner ring 733, an outer ring 734, a second spring 735, a wedge block 736 and a toggle rod 737. Figure 5 and Figure 6As shown, the rotating shaft 731 is vertically arranged on the lower end surface of the box body 71, the rotating wheel 732 is sleeved on the rotating shaft 731, and the rotating shaft 731 rotates with the rotating wheel 732; the inner ring 733 is sleeved on the rotating shaft 731, the inner ring 733 is located above the rotating wheel 732, and the inner ring 733 rotates with the rotating shaft 731, and the upper end surface of the inner ring 733 is provided with a slide groove, and the slide groove is arranged along the radial direction of the inner ring 733; the second spring 735 is arranged In the slide groove, one end of the second spring 735 is arranged on the rotating shaft 731, and the other end of the second spring 735 is arranged on the wedge block 736; the outer ring 734 is sleeved on the inner ring 733, and the inner wall of the outer ring 734 is a wedge-shaped groove matching the wedge block 736; the toggle rod 737 is arranged on the outer ring 734, and the two adjacent toggle rods 737 are arranged at an angle of 90°, and the angle space between the two toggle rods 737 forms a nut clamping space.

[0054] When the inner ring 733 rotates forward, the second spring is in an uncompressed state, and the wedge block 736 is matched and clamped in the wedge groove. When it rotates forward, the wedge block 736 pushes the wedge groove wall, and the wedge block 736 drives the outer ring 734 to rotate; when the box body moves toward the working end, the inner ring 733 rotates forward, and the inner ring 733 can drive the outer ring 734 to rotate, and the toggle rod 737 toggles the nut in the box body while the outer ring rotates; when the inner ring 733 rotates in the reverse direction, The wedge block 736 cannot be stuck in the wedge groove. The inclined surface of the wedge block 736 and the inclined surface of the wedge groove are inclined surfaces that can move relative to each other. The wedge block 736 slides along the groove wall of the wedge groove. The wedge block 736 cannot drive the outer ring 734 to rotate, that is, the outer ring 734 cannot rotate in the opposite direction with the inner ring 733. When the box body is away from the working end, the inner ring 733 rotates in the opposite direction driven by the rotating shaft 731, and the inner ring cannot drive the outer ring to rotate. The toggle rod does not rotate, and the position of the nut in the box body remains unchanged. By controlling the moving direction of the box body, the effect of whether the nut in the box body is equipped to the working end of the substrate is achieved.

[0055] In the embodiment, four toggle rods 737 are arranged on the outer ring 734, and the four toggle rods 737 form four nut clamping spaces. When not rotating, the space for clamping the nut is the first space, and the spaces are the second space, the third space and the fourth space in clockwise order; when the inner ring 733 and the outer ring 734 rotate synchronously, the outer ring 734 drives the toggle rods 737 to rotate, and the nut clamped between the two toggle rods 737 follows the rotation of the toggle rods 737 and is discharged from the opening of the box body 71, that is, the first space is transferred to the fourth space, and the original second space is transferred to the first space. At the same time, the push plate pushes the nut in the box body to move toward the opening position, so that the two toggle rods 737 corresponding to the original second space rotate and clamp the pushed nut at the same time, thereby completing the movement of the nut position.

[0056] A slider is disposed on the lower end of the box body 71 .

[0057] The cover plate 4 is provided with a slide groove 42 at a position corresponding to the slide block;

[0058] A transmission rod 43 is provided on the cover plate 4, and the transmission rod 43 is arranged close to the working end; when the rotating wheel 732 reciprocates on the sliding groove 42 with the box body 71, the transmission rod 43 is located on the movement path of the rotating wheel 732; a first thread is provided on the rotating wheel 732, and a second thread matching the first thread is provided on the transmission rod 43, and the transmission rod 43 is meshed with the rotating wheel 732.

[0059] A baffle 711 is provided at the opening of the box body 71. The baffle 711 is a plate body that is thin at the top and thick at the bottom. The lower end of the baffle 711 is hinged to the lower end surface of the box body 71 through a rotating shaft 712. A gear 713 is provided at one end of the rotating shaft 712. There is a certain distance between the lower end surface of the gear 713 and the upper end of the cover plate. A rack 44 is provided on the upper end surface of the cover plate 4, and the rack 44 matches the gear 713. When the gear 713 is not engaged with the rack 44, the baffle 711 is in a vertical position in the self-locking state of the rotating shaft. , the baffle 711 can prevent the nut from sliding out of the box body 71; when the box body 71 moves to the position of the rack 44, the gear 713 meshes with the rack and rotates, the gear 713 drives the rotating shaft 712 to rotate, and the rotating shaft 712 drives the baffle 711 to rotate, and the baffle 711 changes from a vertical position blocking the nut to a horizontal position, and the baffle 711 in the horizontal position has a slope, and the height of the baffle 711 in the horizontal position is lower than the height of the lower end surface of the box body 71, and the nut can slide out along the slope of the baffle 711. When the box body moves toward the working end, the baffle 711 is set vertically to prevent the nut from sliding out of the box body 71; the rack 44 is set on the cover plate at a position adjacent to the through hole, and when the box body moves to the vicinity of the working end, the rack 44 cooperates with the gear 713 to open the baffle, so as to ensure that the nut slides out of the box body under the push of the toggle rod 737.

[0060] In actual operation, more than 20 to 40 nuts of the same specification are often installed on the same device. After each nut is installed, another nut needs to be manually taken and placed on the insulating adsorption gear 31, which affects work efficiency. During the installation of the nut, the nut assembly component 7 can automatically assemble the nut to the insulating adsorption gear 31, reducing manual operations and improving labor efficiency.

[0061] A plurality of nuts are sequentially arranged in the box body 71, one end of the plurality of nuts is placed on the push plate 722, and the other end of the nut is located at the opening of the box body 71; the rotating portion 73 is matched with the nut located at the opening, and the angle formed by the two toggle rods 737 matches to clamp the nut.

[0062] Embodiment 3

[0063] The self-priming constant torque device described in this embodiment is suitable for narrow spaces. Figure 7 and Figure 8 , based on the first embodiment, the output shaft 21 of the motor 2 is provided with a first bearing 8 and a connecting shaft 9 from top to bottom; the connecting shaft 9 rotates coaxially with the output shaft 21. The first bearing 8 includes a first inner wall, a first ball and a first outer wall, and the first groove 81 is provided on the first outer wall; in this embodiment, a second through hole is provided at a position corresponding to the driving gear 32 on the base plate 1, the first bearing 8 is provided in the second through hole, the outer wall of the first bearing 8 rotates synchronously with the driving gear, the inner wall of the first bearing 8 is provided in the second through hole, and the second through hole also includes a matching through hole matching the matching block.

[0064] When in use, the second through hole is passed through the output shaft, and the matching through hole is made to correspond to the matching block, and the matching block is inserted into the first groove 81 through the matching through hole. When the motor 2 starts to work, the output shaft 21 rotates, the output shaft 21 drives the connecting shaft 9 to rotate, the connecting shaft 9 drives the matching block 91 to rotate, the matching block 91 drives the outer wall of the first bearing 8 to rotate, the outer wall rotation drives the driving gear 32 to rotate, the transmission gear assembly 3 starts to work, the insulating adsorption gear 31 rotates, and finally the installation of the nut is completed.

[0065] In this embodiment, a plurality of substrates 1 are included, and a transmission gear assembly 3 is provided on each of the substrates 1. The corresponding insulating adsorption gears 31 on different substrates can adsorb different sizes of nuts. During use, when the size of nuts that can be adsorbed by the insulating adsorption gear 31 currently used cannot meet the installation needs at this time, the substrate can be replaced. Along the axial direction of the output shaft 21, pull out the currently used substrate 1, take out the substrate 1 that meets the use requirements, match the first groove 81 with the matching block, set the substrate 1 to be replaced on the connecting shaft 9, and complete the installation of the new substrate 1. During use, the operator can quickly replace the substrate 1 according to different nut sizes, adsorb nuts of different sizes, and thereby achieve the installation of nuts of different sizes.

[0066] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A self-priming constant torque device suitable for narrow spaces, characterized in that: The invention comprises a base plate (1), a motor (2) and a transmission gear assembly (3); the base plate (1) comprises a non-working end and a working end which can be extended into a narrow space; the transmission gear assembly (3) is fixed on the working end, and the transmission gear assembly (3) rotates under the drive of the motor (2); the output end of the transmission gear assembly (3) is an insulating adsorption gear (31), and the insulating adsorption gear (31) is used to adsorb a nut to be installed.

2. The self-priming constant torque device suitable for narrow spaces according to claim 1, characterized in that: It also comprises a cover plate (4), wherein the cover plate (4) is arranged opposite to the base plate (1); and the transmission gear assembly (3) is arranged between the cover plate (4) and the base plate (1).

3. The self-priming constant torque device suitable for narrow spaces according to claim 2, characterized in that: The cover plate (4) is provided with a through hole (41), and the through hole (41) matches the insulating adsorption gear (31).

4. The self-priming constant torque device suitable for narrow spaces according to claim 3, characterized in that: The size of the through hole (41) is larger than the size of the nut.

5. The self-priming constant torque device suitable for narrow spaces according to claim 2, characterized in that: It also comprises a supporting pad (5), wherein the supporting pad (5) is arranged between the base plate (1) and the cover plate (4).

6. The self-priming constant torque device suitable for narrow spaces according to claim 1, characterized in that: The transmission gear assembly (3) further comprises a driving gear (32), a transmission gear (33) and a limiting gear (34).

7. The self-priming constant torque device suitable for narrow spaces according to claim 6, characterized in that: The driving gear (32) is arranged at the output end of the motor (2).

8. The self-priming constant torque device suitable for narrow spaces according to claim 7, characterized in that: The transmission gear (33) is meshed between the driving gear (32) and the insulating adsorption gear (31).

9. The self-priming constant torque device suitable for narrow spaces according to claim 6, characterized in that: The number of the limiting gears (34) is two.

10. The self-priming constant torque device suitable for narrow spaces according to claim 1, characterized in that: It also includes a battery (6) which is electrically connected to the motor (2).

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