Tire nut pre-tightening device

Abstract

The utility model relates to a tire nut pre-tightening device. Comprising a driving mechanism, an offset transmission assembly, a multi-shaft tightening assembly and a sleeve assembly. The bias transmission assembly comprises a first input shaft and a first output shaft, and the first input shaft and the first output shaft are arranged in parallel at an interval; the multi-shaft tightening assembly comprises at least one second input shaft and a plurality of second output shafts; an output shaft of the driving mechanism is connected with a first input shaft of the offset transmission assembly, a first output shaft of the offset transmission assembly is connected with a second input shaft of the multi-shaft tightening assembly, and a second output shaft of each multi-shaft tightening assembly is connected with a sleeve assembly. According to the multi-shaft tightening device, a plurality of nuts can be tightened at the same time, the position of the whole multi-shaft tightening assembly is offset through the arrangement of the offset transmission assembly, the size of the whole device can be better attached to the site, and operation of operators is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of tightening nuts for automobile tires, and more specifically to a tire nut pre-tightening device. Background Art

[0002] After the tire clamping tool places the tire on the tire fixing stud, if the tire clamping tool is withdrawn without tightening the bolt, there will be a risk of the tire falling, so the operator needs to tighten the nut before withdrawing the tool. Production operators need to tighten at least one nut manually to prevent the tire from falling. This process takes at least 3.6 seconds to tighten the nut manually.

[0003] The tire tightening machine and tire wheel hub on the production line do not have automatic precision positioning devices. Each tightening operation requires manually pushing the sleeve installed on the tightening machine to the position of the wheel hub nut hole, but the manual positioning accuracy is not high, and the wheel hub is not fitted and fixed, so it is necessary to use a pneumatic tool to pre-tighten the remaining four nuts that have not been installed, and then use the tightening machine to manually tighten them in position, otherwise there will be undesirable phenomena such as stud or nut slipping, nut failure to align, and scratching of the wheel hub. This pre-tightening process takes at least 14.4 seconds.

[0004] The above process not only increases the difficulty for operators, but also reduces production efficiency. Utility Model Content

[0005] In order to overcome the defects in the prior art, the utility model provides a tire nut pre-tightening device, which can effectively improve the efficiency of the pre-tightening operation of automobile tire nuts, thereby improving production efficiency.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A tire nut pre-tightening device comprises a driving mechanism, an offset transmission assembly, a multi-axis tightening assembly, and a sleeve assembly; the offset transmission assembly comprises a first input shaft and a first output shaft, and the first input shaft is spaced apart and arranged in parallel with the first output shaft; the multi-axis tightening assembly comprises at least one second input shaft and a plurality of second output shafts; the output shaft of the driving mechanism is connected to the first input shaft of the offset transmission assembly, the first output shaft of the offset transmission assembly is connected to the second input shaft of the multi-axis tightening assembly, and a sleeve assembly is connected to the second output shaft of each multi-axis tightening assembly.

[0008] According to the above technical means, the tire nut pre-tightening device provided by the utility model offsets the output shaft of the driving mechanism through the offset transmission component, so that the position of the sleeve component can better fit the site, and the driving mechanism drives the first input shaft of the offset transmission component to rotate, and the first input shaft rotates to drive the first output shaft to rotate, and the first output shaft then drives the second input shaft of the multi-axis tightening component to rotate, and the second input shaft rotates, and at the same time drives multiple second output shafts to rotate, and the second output shafts are respectively connected to the sleeve assembly, and the sleeve assembly is used to connect with the nut, and the second output shaft drives the sleeve assembly to rotate, so as to achieve the tightening of the nut. The tire nut pre-tightening device provided by the utility model can not only realize the tightening of multiple nuts at the same time, but also, through the setting of the offset transmission component, the size and structure of the entire device can be better fitted to the site.

[0009] In one embodiment, the offset transmission assembly includes an offset housing, and at least two first gears rotatably mounted in the offset housing; the first gears are meshed in sequence, the first input shaft is connected to one of the first gears, and the first output shaft is connected to the other first gear; the offset housing is connected to the drive mechanism. Preferably, the two first gears are arranged in parallel and meshed with each other; since the drive mechanism is relatively large in size and has a handheld portion, the overall height is relatively high. The output shaft of the drive mechanism can be offset downward through the offset transmission mechanism, so that the multi-axis tightening assembly is located within the height range of the drive mechanism as a whole, which can reduce the height of the entire device, thereby enabling better on-site operation and better realizing the tightening operation of the tire when the space in the middle position of the tire tightening tool is narrow. The offset transmission assembly is made of high-strength engineering plastics, with a simple structure, small torque loss, high service life, and light operation.

[0010] In one embodiment, the offset transmission assembly includes three first gears, the axes of the three first gears are parallel to each other and located in the same plane; the three first gears are meshed in sequence, and the first input shaft and the first output shaft are respectively connected to the two first gears located on the outermost sides.

[0011] In one embodiment, the offset housing includes an offset upper end cover and an offset lower end cover; the offset upper end cover is provided with a first input hole, and the offset lower end cover is provided with a first output hole; one end of the offset upper end cover is connected to a driving mechanism, and the offset lower end cover is detachably connected to the offset upper end cover, and the first input shaft is passed through the first input hole; the first output shaft is passed through the first output hole.

[0012] In one embodiment, the multi-axis tightening assembly includes a multi-axis housing, a second gear, and a plurality of third gears; the second input shaft is arranged at the axis of the second gear, and the plurality of second output shafts are arranged at the axis of the plurality of third gears; the plurality of third gears are arranged at intervals on the outer periphery of the second gear and mesh with the second gear; the second gear and the third gear are both rotatably mounted in the multi-axis housing. The second gear is a large-diameter gear, and the plurality of third gears are small-diameter gears of the same size; the plurality of third gears are arranged at intervals along the circumference of the second gear, corresponding to the position of the nut on the tire, the first output shaft is connected to the second input shaft, the second input shaft drives the second gear to rotate, the second gear drives the plurality of third gears to rotate at the same time, and the third gears are respectively connected to the second output shaft; the second output shaft is connected to the sleeve assembly, the sleeve assembly is sleeved on the nut, the second output shaft rotates to drive the sleeve assembly to rotate, thereby driving the nut to rotate. Through the utility model multi-axis tightening assembly, the tightening operation of multiple nuts at the same time is realized. And the present utility model adopts gear transmission, the transmission mode is stable, and the torque loss is small.

[0013] In one embodiment, there are five third gears and five second output shafts; the five third gears are arranged in a regular pentagon and are respectively located at the vertices of the regular pentagon. There are generally five nuts on the tire, and the five nuts are also arranged in a regular pentagon. The positions of the second output shafts correspond to the positions of the nuts on the tire, and the multiple sleeves also correspond to the positions of the nuts on the tire; in this way, the five nuts on the tire can be tightened at the same time, saving time and improving efficiency.

[0014] In one embodiment, the multi-axis housing includes a multi-axis upper shell and a multi-axis lower shell; the multi-axis upper shell is provided with a second input hole; the multi-axis lower shell is provided with multiple second output holes; the second input shaft is passed through the second input hole, and multiple second output shafts are respectively passed through the multiple second output holes.

[0015] In one embodiment, the sleeve assembly includes an outer sleeve and an inner sleeve; the inner sleeve is rotatably disposed in the outer sleeve, one end of the outer sleeve is mounted on the multi-axis housing, and the second output shaft is connected to one end of the inner sleeve.

[0016] In one embodiment, the inner sleeve is rotatably connected to the outer sleeve via a bearing; a mounting seat corresponding to the position of the second output shaft is provided at intervals on the same side of the multi-axis housing; the outer sleeve is mounted on the mounting seat. The outer sleeve is fixed to the multi-axis housing, and the inner sleeve is rotatably connected to the outer sleeve via a bearing; the second output shaft is connected to the inner sleeve, and when in use, the inner sleeve is sleeved on the nut, and the second output shaft drives the inner sleeve to rotate, thereby driving the nut to rotate, thereby realizing the tightening operation of the nut.

[0017] In one embodiment, the driving mechanism includes a driving motor, a handle and a battery with a base function; the output shaft of the driving motor is connected to the first input shaft of the bias transmission assembly, and the driving motor is electrically connected to the battery; one end of the handle is connected to the driving motor, and the other end is detachably connected to the battery with a base function. The battery is set as the base of the entire device, so that the bottom of the entire device is heavier, and the entire device can be stably placed on the ground through the base; the handle is set to facilitate the operator to operate; the driving motor is located at the top of the entire device, and the handle is located between the driving motor and the base for easy operation.

[0018] Compared with the prior art, the beneficial effects are: the tire nut pre-tightening device provided by the utility model can not only realize the simultaneous tightening of multiple nuts, but also offset the position of the entire multi-axis tightening assembly through the setting of the offset transmission assembly, so that the size of the entire device can better fit the site and is convenient for operators to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model from the first viewing angle.

[0020] Figure 2 It is a schematic diagram of the second viewing angle of the overall structure of the utility model.

[0021] Figure 3 It is an exploded schematic diagram of the utility model structure.

[0022] Figure numerals: 1. driving mechanism; 11. driving motor; 12. handle; 13. battery with base function; 2. offset transmission assembly; 21. offset upper end cover; 22. offset lower end cover; 23. first gear; 3. multi-axis tightening assembly; 31. multi-axis upper shell; 32. multi-axis lower shell; 33. second gear; 34. third gear; 4. sleeve assembly; 41. outer sleeve; 42. inner sleeve. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The utility model is described in one of the embodiments in combination with the specific implementation methods. Among them, the drawings are only used for exemplary descriptions, and only schematic diagrams are shown, not physical drawings, and cannot be understood as limitations on the utility model; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0024] In the description of the present utility model, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for exemplary explanations and cannot be understood as limitations on the present utility model. For ordinary technicians in the field, the specific meanings of the above terms can be understood according to specific circumstances. In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or schemes that satisfy both A and B.

[0025] Embodiment 1:

[0026] like Figures 1 to 3 As shown, a tire nut pre-tightening device includes a driving mechanism 1, an offset transmission assembly 2, a multi-axis tightening assembly 3, and a sleeve assembly 4; the offset transmission assembly 2 includes a first input shaft and a first output shaft, and the first input shaft and the first output shaft are spaced apart and arranged in parallel; the multi-axis tightening assembly 3 includes at least one second input shaft and multiple second output shafts; the output shaft of the driving mechanism 1 is connected to the first input shaft of the offset transmission assembly 2, and the first output shaft of the offset transmission assembly 2 is connected to the second input shaft of the multi-axis tightening assembly 3, and the second output shaft of each multi-axis tightening assembly 3 is connected to the sleeve assembly 4.

[0027] According to the above technical means, the tire nut pre-tightening device provided by the utility model offsets the output shaft of the driving mechanism 1 through the offset transmission component 2, so that the position of the sleeve component 4 can better fit the site, and the driving mechanism 1 drives the first input shaft of the offset transmission component 2 to rotate, and the first input shaft rotates to drive the first output shaft to rotate, and the first output shaft then drives the second input shaft of the multi-axis tightening component 3 to rotate, and the second input shaft rotates, and at the same time drives multiple second output shafts to rotate, and the second output shafts are respectively connected to the sleeve component 4, and the sleeve component 4 is used to connect with the nut, and the second output shaft drives the sleeve component 4 to rotate, so as to realize the tightening of the nut. Through the tire nut pre-tightening device provided by the utility model, not only can the tightening of multiple nuts be realized at the same time, but also, through the setting of the offset transmission component 2, the size and structure of the entire device can be better fitted to the site.

[0028] like Figure 3 As shown, the offset transmission assembly 2 includes an offset housing, and at least two first gears 23 rotatably mounted in the offset housing; the first gears 23 are meshed in sequence, the first input shaft is connected to one of the first gears 23, and the first output shaft is connected to the other first gear 23; the offset housing is connected to the drive mechanism 1. Preferably, the two first gears 23 are arranged in parallel and meshed with each other; since the drive mechanism 1 is relatively large in size and has a handheld part, the overall height is relatively high. The output shaft of the drive mechanism 1 can be offset downward through the offset transmission mechanism, so that the multi-axis tightening assembly 3 is located within the height range of the drive mechanism 1 as a whole, which can reduce the height of the entire device, so that on-site operation can be better performed, and the tightening operation of the tire can be better realized when the space in the middle position of the tire tightening tool is narrow. The offset transmission assembly 2 is made of high-strength engineering plastics, with a simple structure, small torque loss, high service life, and light operation.

[0029] like Figure 3 As shown, the offset housing includes an offset upper end cover 21 and an offset lower end cover 22; the offset upper end cover 21 is provided with a first input hole, and the offset lower end cover 22 is provided with a first output hole; one end of the offset upper end cover 21 is connected to the driving mechanism 1, and the offset lower end cover 22 is detachably connected to the offset upper end cover 21, and the first input shaft is passed through the first input hole; the first output shaft is passed through the first output hole.

[0030] like Figures 1 to 3 As shown, the multi-axis tightening assembly 3 includes a multi-axis housing, a second gear 33, and a plurality of third gears 34; the second input shaft is arranged at the axis of the second gear, and the plurality of second output shafts are arranged at the axis of the plurality of third gears 34; the plurality of third gears 34 are arranged at intervals on the outer periphery of the second gear 33 and mesh with the second gear 33; the second gear 33 and the third gear 34 are both rotatably mounted in the multi-axis housing. The second gear 33 is a large-diameter gear, and the plurality of third gears 34 are small-diameter gears of the same size; the plurality of third gears 34 are arranged at intervals along the circumference of the second gear 33, corresponding to the position of the nut on the tire, the first output shaft is connected to the second input shaft, the second input shaft drives the second gear 33 to rotate, the second gear 33 drives the plurality of third gears 34 to rotate at the same time, and the third gears 34 are respectively connected to the second output shaft; the second output shaft is connected to the sleeve assembly 4, the sleeve assembly 4 is sleeved on the nut, and the second output shaft rotates to drive the sleeve assembly 4 to rotate, thereby driving the nut to rotate. Through the multi-axis tightening assembly 3 of the utility model, the tightening operation of multiple nuts at the same time is realized. Moreover, the present invention adopts gear transmission, the transmission mode is stable and the torque loss is small.

[0031] like Figure 3As shown, the multi-axis housing includes a multi-axis upper shell 31 and a multi-axis lower shell 32; the multi-axis upper shell 31 is provided with a second input hole; the multi-axis lower shell 32 is provided with multiple second output holes; the second input shaft is passed through the second input hole, and the multiple second output shafts are respectively passed through the multiple second output holes.

[0032] like Figure 3 As shown, the sleeve assembly 4 includes an outer sleeve 41 and an inner sleeve 42; the inner sleeve 42 is rotatably disposed in the outer sleeve 41, one end of the outer sleeve 41 is mounted on the multi-axis housing, and the second output shaft is connected to one end of the inner sleeve 42.

[0033] In this embodiment, the inner sleeve 42 is rotatably connected to the outer sleeve 41 through a bearing; a mounting seat corresponding to the position of the second output shaft is provided at intervals on the same side of the multi-axis housing; the outer sleeve 41 is mounted on the mounting seat. The outer sleeve 41 is fixed to the multi-axis housing, and the inner sleeve 42 is rotatably connected to the outer sleeve 41 through a bearing; the second output shaft is connected to the inner sleeve 42. When in use, the inner sleeve 42 is sleeved on the nut, and the second output shaft drives the inner sleeve 42 to rotate, thereby driving the nut to rotate, thereby realizing the tightening operation of the nut.

[0034] like Figures 1 to 3 As shown, the driving mechanism 1 includes a driving motor 11, a handle 12 and a battery 13 with a base function; the output shaft of the driving motor 11 is connected to the first input shaft of the bias transmission assembly 2, and the driving motor 11 is electrically connected to the battery; one end of the handle 12 is connected to the driving motor 11, and the other end is detachably connected to the battery 13 with a base function. The battery is set as the base of the entire device, so that the bottom of the entire device is heavier, and the entire device can be stably placed on the ground through the base; the handle 12 is set to facilitate the operator to operate; the driving motor 11 is located at the top of the entire device, and the handle 12 is located between the driving motor 11 and the base, which is convenient for operation.

[0035] Embodiment 2:

[0036] The other structures of this embodiment are the same as those of embodiment 1, except that Figure 3 As shown, the offset transmission assembly 2 includes three first gears 23, the axes of the three first gears 23 are parallel to each other and located in the same plane; the three first gears 23 are meshed in sequence, and the first input shaft and the first output shaft are respectively connected to the two first gears 23 located on the outermost sides.

[0037] Embodiment 3:

[0038] The other structures of this embodiment are the same as those of embodiment 1, except that Figure 3As shown, there are five third gears 34 and five second output shafts; the five third gears 34 are arranged in a regular pentagon and are respectively located at the vertices of the regular pentagon. There are generally five nuts on the tire, and the five nuts are also arranged in a regular pentagon. The positions of the second output shafts correspond to the positions of the nuts on the tire, and the multiple sleeves also correspond to the positions of the nuts on the tire; in this way, the five nuts on the tire can be tightened at the same time, saving time and improving efficiency.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0040] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A tire nut pre-tightening device, characterized in that: The invention comprises a driving mechanism (1), an offset transmission assembly (2), a multi-axis tightening assembly (3), and a sleeve assembly (4); the offset transmission assembly (2) comprises a first input shaft and a first output shaft, and the first input shaft and the first output shaft are spaced apart and arranged in parallel; the multi-axis tightening assembly (3) comprises at least one second input shaft and a plurality of second output shafts; the output shaft of the driving mechanism (1) is connected to the first input shaft of the offset transmission assembly (2), the first output shaft of the offset transmission assembly (2) is connected to the second input shaft of the multi-axis tightening assembly (3), and the second output shaft of each multi-axis tightening assembly (3) is connected to a sleeve assembly (4).

2. The tire nut pre-tightening device according to claim 1, characterized in that: The offset transmission assembly (2) comprises an offset housing, and at least two first gears (23) rotatably mounted in the offset housing; the first gears (23) are meshed in sequence, the first input shaft is connected to one of the first gears (23), and the first output shaft is connected to another first gear (23); the offset housing is connected to the drive mechanism (1).

3. The tire nut pre-tightening device according to claim 2, characterized in that: The offset transmission assembly (2) comprises three first gears (23), the axes of the three first gears (23) are parallel to each other and are located in the same plane; the three first gears (23) are meshed in sequence, and the first input shaft and the first output shaft are respectively connected to the two first gears (23) located at the outermost sides.

4. The tire nut pre-tightening device according to claim 2, characterized in that: The offset housing comprises an offset upper end cover (21) and an offset lower end cover (22); the offset upper end cover (21) is provided with a first input hole, and the offset lower end cover (22) is provided with a first output hole; one end of the offset upper end cover (21) is connected to the driving mechanism (1), the offset lower end cover (22) is detachably connected to the offset upper end cover (21), the first input shaft is passed through the first input hole; and the first output shaft is passed through the first output hole.

5. The tire nut pre-tightening device according to claim 2, characterized in that: The multi-axis tightening assembly (3) comprises a multi-axis housing, a second gear (33), and a plurality of third gears (34); the second input shaft is arranged at the axis center of the second gear, and the plurality of second output shafts are arranged at the axis centers of the plurality of third gears (34); the plurality of third gears (34) are arranged at intervals on the outer periphery of the second gear (33) and mesh with the second gear (33); the second gear (33) and the third gear (34) are both rotatably mounted in the multi-axis housing.

6. The tire nut pre-tightening device according to claim 5, characterized in that: There are five third gears (34) and five second output shafts; the five third gears (34) are arranged in a regular pentagon and are respectively located at the vertices of the regular pentagon.

7. The tire nut pre-tightening device according to claim 5, characterized in that: The multi-axis housing comprises a multi-axis upper shell (31) and a multi-axis lower shell (32); the multi-axis upper shell (31) is provided with a second input hole; the multi-axis lower shell (32) is provided with a plurality of second output holes; the second input shaft is passed through the second input hole, and the plurality of second output shafts are respectively passed through the plurality of second output holes.

8. The tire nut pre-tightening device according to claim 5, characterized in that: The sleeve assembly (4) comprises an outer sleeve (41) and an inner sleeve (42); the inner sleeve (42) is rotatably arranged in the outer sleeve (41), one end of the outer sleeve (41) is mounted on the multi-shaft housing, and the second output shaft is connected to one end of the inner sleeve (42).

9. The tire nut pre-tightening device according to claim 8, characterized in that: The inner shaft sleeve (42) is rotatably connected to the outer shaft sleeve (41) via a bearing; a mounting seat corresponding to the position of the second output shaft is provided at intervals on the same side of the multi-shaft housing; and the outer shaft sleeve (41) is mounted on the mounting seat.

10. The tire nut pre-tightening device according to any one of claims 1 to 9, characterized in that: The driving mechanism (1) comprises a driving motor (11), a handle (12) and a battery (13) with a base function; the output shaft of the driving motor (11) is connected to the first input shaft of the bias transmission assembly (2), and the driving motor (11) is electrically connected to the battery; one end of the handle (12) is connected to the driving motor (11), and the other end is detachably connected to the battery (13) with a base function.

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