Tightening mechanism

Abstract

The utility model discloses a tightening mechanism and relates to the technical field of bolt tightening, the tightening mechanism is used for tightening bolts on a differential mechanism, a plurality of groups of bolts are arranged between the differential mechanism and main speed reduction teeth connected with the differential mechanism, the groups of bolts are arranged in a staggered manner, and the tightening mechanism comprises a base, a mounting plate and a displacement structure; the base is provided with a mounting end face; the mounting plate is rotatably mounted on the mounting end face in the thickness direction of the base. According to the technical scheme, the tightening parts are integrated on the mounting plate by adopting the arrangement mode that the tightening parts rotate along with the mounting plate, and the positions of the tightening parts are synchronously changed through the position change of the mounting plate; the positions of the tightening parts are not required to be adjusted one by one or tightening guns are not required to be used for tightening one by one, and each bolt is not required to be provided with a tightening gun, so that manpower and material resources are reduced, and meanwhile, the occupied space is also saved.

Description

Technical Field

[0001] The utility model relates to the technical field of bolt tightening, in particular to a tightening mechanism. Background Art

[0002] The differential and the main reduction gear are connected by multiple bolts to form a differential assembly. In order to ensure the tightening quality, tightening guns with the same number as the bolts are usually arranged in similar processes for synchronous tightening. However, due to the compact structure of the differential product, it is difficult to design enough space for the installation of tightening guns at the workstation. If a single tightening gun is used to tighten each bolt one by one, it is time-consuming and labor-intensive, and may easily lead to low production efficiency. If each bolt is equipped with a tightening gun to tighten it, the large number of bolts may lead to an excessive number of tightening guns and a lack of installation space, resulting in an inability to install and use them.

[0003] In view of this, we propose a tightening mechanism to solve the above problems. Utility Model Content

[0004] The main purpose of the utility model is to provide a tightening mechanism, aiming to achieve the purpose of tightening bolts in batches and improve production efficiency.

[0005] In order to achieve the above-mentioned purpose, the tightening mechanism proposed in the utility model is used to tighten the bolts on the differential. A plurality of groups of bolts are arranged between the differential and the main reduction gear connected to the differential. The bolts in each group are arranged alternately. The tightening mechanism includes:

[0006] A base having a mounting end surface;

[0007] A mounting plate is rotatably mounted on the mounting end surface along the thickness direction of the base, and a plurality of tightening parts are provided on the mounting plate; and

[0008] The displacement structure comprises a contact portion and a limiting portion, wherein the limiting portion and the contact portion are arranged on the mounting end surface at intervals, the limiting portion has a clamping position for clamping with the mounting plate within its movable stroke, and the contact portion is drivingly connected to the mounting plate to form a plurality of tightening positions within the movable stroke of the mounting plate;

[0009] Each of the tightening positions corresponds to each group of the bolt settings.

[0010] In one embodiment, the tightening part includes tightening guns, and each of the tightening guns is arranged around the mounting plate along the axial direction thereof.

[0011] In one embodiment, the contact portion includes a plurality of contact plates, and a driving portion is disposed on one of the contact plates.

[0012] In one embodiment, the driving unit includes a first cylinder and a cylinder seat;

[0013] The cylinder seat is fixed to the outer peripheral side of the base, one end of the first cylinder is hinged to the cylinder seat, and the other end is connected to one of the contact plates.

[0014] In one embodiment, the position limiting portion includes a second cylinder and a mounting seat;

[0015] The mounting seat is fixed on the mounting end surface, and one end of the second cylinder is used to penetrate the outside of the mounting seat to limit the mounting plate.

[0016] In one embodiment, the limiting portion further includes a latch plate, one end of the latch plate along the thickness direction is connected to the mounting plate, and one end of the second cylinder is used to extend into the interior of the latch plate to limit the latch plate.

[0017] In one embodiment, the tightening mechanism also includes a stop portion, which includes a plurality of connecting blocks and a plurality of bolts, wherein the outer peripheral side of each connecting block is fixed to the mounting end surface, and one end of each bolt is respectively penetrated to the outside of each connecting block to abut against the contact portion.

[0018] In one embodiment, the tightening mechanism further includes a buffer portion, which includes a plurality of fixed blocks and a plurality of spring plungers, wherein the outer peripheral side of each of the fixed blocks is fixed to the mounting end surface, and one end of each of the spring plungers is respectively penetrated to the outside of each of the fixed blocks for abutting against the contact portion.

[0019] In one embodiment, the tightening mechanism further includes a mounting bracket, and the mounting bracket is disposed on the outer peripheral side of the base.

[0020] In one embodiment, the tightening mechanism further includes a rotating seat, the rotating seat is arranged on the mounting end surface, and the mounting plate is connected to the rotating seat.

[0021] The technical solution of the utility model integrates each of the tightening parts on the mounting plate by adopting a setting mode in which multiple tightening parts rotate with the mounting plate, and the positions of each of the tightening parts are changed synchronously by changing the position of the mounting plate. There is no need to adjust the position of each tightening part one by one or use a tightening gun to tighten them one by one, and there is no need to configure a tightening gun for each bolt, which reduces manpower and material resources while also saving space. By staggering the multiple groups of bolts on the differential and the main reduction gear, the tightening positions of each of the tightening parts can correspond to the tightening operations of each group of bolts, so that synchronous batch tightening operations can be performed through the position changes of each of the tightening parts, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0023] Figure 1 A structural schematic diagram of an embodiment of a tightening mechanism provided by the utility model;

[0024] Figure 2 This is a schematic diagram of the positions of multiple groups of bolts provided between the differential and the main reduction gear provided by the utility model.

[0025] Description of Figure Numbers:

[0026] 100. Tightening mechanism; 1. Differential; 2. Main reduction gear; 3. Base; 31. Mounting end surface; 4. Mounting plate; 41. Tightening part; 411. Tightening gun; 5. Displacement structure; 51. Contact part; 511. Contact plate; 512. Driving part; 5121. First cylinder; 5122. Cylinder seat; 52. Limiting part; 521. Second cylinder; 522. Mounting seat; 523. Latch plate; 6. Stopping part; 61. Connecting block; 62. Protruding head bolt; 7. Buffer part; 71. Fixing block; 72. Spring plunger; 8. Mounting bracket; 9. Rotating seat.

[0027] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] 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. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0030] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0031] The differential and the main reduction gear are connected by multiple bolts to form a differential assembly. In order to ensure the tightening quality, tightening guns with the same number as the bolts are usually arranged in similar processes for synchronous tightening. However, due to the compact structure of the differential product, it is difficult to design enough space for the installation of tightening guns at the workstation. If a single tightening gun is used to tighten each bolt one by one, it is time-consuming and labor-intensive, and may easily lead to low production efficiency. If each bolt is equipped with a tightening gun to tighten it, the large number of bolts may lead to an excessive number of tightening guns and a lack of installation space, resulting in an inability to install and use them.

[0032] The utility model provides a tightening mechanism, which aims to achieve the purpose of tightening bolts in batches and improve production efficiency.

[0033] See also Figure 1 to Figure 2 In one embodiment of the utility model, the tightening mechanism is used to tighten the bolts on the differential. A plurality of groups of bolts are arranged between the differential 1 and the main reduction gear 2 connected to the differential 1, and the bolts in each group are arranged alternately. The tightening mechanism 100 includes a base 3, a mounting plate 4 and a displacement structure 5. The base 3 has a mounting end surface 31; the mounting plate 4 is rotatably mounted on the mounting end surface 31 along the thickness direction of the base 3, and a plurality of tightening portions 41 are arranged on the mounting plate 4; the displacement structure 5 includes a contact portion 51 and a limiting portion 52, the limiting portion 52 is arranged on the mounting end surface 31 at an interval from the contact portion 51, and the limiting portion 52 has a clamping position for clamping with the mounting plate 4 within its active stroke, and the contact portion 51 is drivingly connected to the mounting plate 4 to form a plurality of tightening positions within the active stroke of the mounting plate 4; each of the tightening positions corresponds to each group of the bolts.

[0034] The technical solution of the utility model integrates each tightening part 41 on the mounting plate 4 by adopting a setting mode in which multiple tightening parts 41 rotate with the mounting plate 4. The position of each tightening part 41 is changed synchronously by the position change of the mounting plate 4. There is no need to adjust the position of each tightening part 41 one by one or use a tightening gun to tighten them one by one, and there is no need to configure a tightening gun for each bolt, which reduces manpower and material resources while also saving space. By staggeredly arranging multiple groups of bolts on the differential 1 and the main reduction gear 2, the tightening positions of each tightening part 41 can correspond to the tightening operations of each group of bolts, so that synchronous batch tightening operations can be performed through the position changes of each tightening part 41, thereby improving production efficiency.

[0035] In some embodiments, the contact portion 51 can be a plate or a rod. The rod configuration has the advantage of occupying a small area. The plate configuration has a larger contact area than the rod and is easy to install with external equipment. Considering that in order to reduce manpower and realize automated operation, the contact portion 51 may be connected and installed with external equipment, in this embodiment, the contact portion 51 is configured using a plate. For the specific configuration method, please refer to the following description.

[0036] Specifically, in this embodiment, the contact portion 51 includes a plurality of contact plates 511, and a driving portion 512 is provided on one of the contact plates 511; thus, through the provision of the driving portion 512, one of the contact plates 511 can be driven to rotate, thereby driving the mounting plate 4 to rotate, thereby realizing the automatic displacement operation of the tightening portion 41.

[0037] In some implementations, the drive unit 512 may be configured as a drive cylinder or an electric push rod. In order to achieve smoothness during pushing, in this embodiment, the drive cylinder is used, which has good smoothness.

[0038] Specifically, in the technical solution of the present invention, the driving part 512 includes a first cylinder 5121 and a cylinder seat 5122; the cylinder seat 5122 is fixed to the outer peripheral side of the base 3, one end of the first cylinder 5121 is hinged to the cylinder seat 5122, and the other end is connected to at least one of the contact plates 511; in this way, the first cylinder 5121 is installed in a hinged manner, and the first cylinder 5121 can be flexibly changed according to the rotation position of the mounting plate 4 when pushed to avoid jamming.

[0039] In this embodiment, the other end of the first cylinder 5121 is connected to at least one of the contact plates 511 in a rotational connection, thereby improving the smoothness of the mounting plate 4 when being pushed to rotate.

[0040] In some embodiments, the specific setting method of the limiting portion 52 can be a cylinder, which has the effect of automatic extension and retraction; it can also be an insertion rod, which has a simple structure and is easy to operate. In this embodiment, the limiting portion 52 adopts the setting method of a cylinder. Compared with the setting method of an insertion rod, it has a high degree of automation and a better fixing effect. For the specific implementation method, please refer to the following description.

[0041] Specifically, in the present embodiment, the limiting portion 52 includes a second cylinder 521 and a mounting seat 522; the mounting seat 522 is fixed on the mounting end surface 31, and one end of the second cylinder 521 is used to penetrate the outside of the mounting seat 522 to limit the mounting plate 4; with such a configuration, the second cylinder 521 can extend and be inserted into the mounting plate 4 for limiting, thereby achieving the purpose of fixing the mounting plate 4.

[0042] Furthermore, considering that the area of ​​the mounting plate 4 becomes smaller after the tightening portion 41 is provided, and since the second cylinder 521 has a certain volume, in order to solve the installation position problem, in the technical solution of the present utility model, the limiting portion 52 also includes a latch plate 523, and the latch plate 523 is connected to the mounting plate 4 at one end along its thickness direction, and one end of the second cylinder 521 is used to extend to the inside of the latch plate 523 to limit the latch plate 523; in this way, the provision of the latch plate 523 extends the area of ​​the mounting plate 4, and then the second cylinder 521 is fixed by opening a hole in the inside of the latch plate 523.

[0043] It should be explained that, since there are multiple tightening positions, the latch plate 523 needs to have holes corresponding to the multiple tightening positions inside, so as to achieve the fixation of the latch plate 523 by the second cylinder 521.

[0044] There are many specific connection methods for the contact portion 51 and the limiting portion 52, which can be welding or bolting. In order to achieve flexibility in use, in this embodiment, the contact portion 51 and the limiting portion 52 are fixed on the mounting plate 4 and the mounting end surface 31 respectively by bolting.

[0045] In the embodiment of the present invention, there is no limitation on the configuration of the tightening part 41 , for example, it can be a tightening gun for automatic tightening operation. For the specific implementation, please refer to the following description.

[0046] Furthermore, the tightening part 41 includes tightening guns 411, and each of the tightening guns 411 is arranged on the mounting plate 4 at intervals along its axial direction; in this way, each of the tightening guns 411 is arranged in a ring on the mounting plate 4, so as to be installed corresponding to the installation positions of each group of bolts on the differential 1 and the main reduction gear 2, thereby achieving the purpose of batch tightening.

[0047] It should be noted that the distribution positions of the tightening guns 411 are correspondingly arranged according to the positions of the bolt groups on the differential 1 and the main reduction gear 2 , so as to facilitate the corresponding tightening operation.

[0048] It should be explained that the general differential and the main reduction gear are connected by fourteen bolts to form a differential assembly. In this embodiment, Figure 2 As shown, the fourteen bolts can be divided into two groups for tightening, wherein the two groups of bolts are arranged alternately, such as Figure 1 As shown, the number of the tightening guns 411 is set to seven to form a tightening assembly, and is set corresponding to one group of bolts, so that one group of bolts can be directly tightened, and by rotating the mounting plate 4, the tightening assembly corresponds to the position of another group of bolts and is directly tightened, thereby realizing batch tightening operations of fourteen bolts to improve production efficiency.

[0049] In addition, in order to realize the stopping operation of the contact portion 51, in the technical solution of the present utility model, the tightening mechanism 100 also includes a stopping portion 6, and the stopping portion 6 includes a plurality of connecting blocks 61 and a plurality of protruding head bolts 62, the outer peripheral side of each connecting block 61 is fixed to the mounting end face 31, and one end of each protruding head bolt 62 is respectively penetrated to the outside of each connecting block 61 to abut against the contact portion 51; in this way, when the contact portion 51 rotates, the protruding head bolt 62 abuts against the contact plate 511, plays a role of stopping the contact plate 511, and can cooperate with the limiting portion 52 to stop and limit the rotation of the contact portion 51, thereby facilitating the tightening operation at the next position.

[0050] It should be noted that, in the present embodiment, two connecting blocks 61 are provided, and two protruding head bolts 62 are provided. Each connecting block 61 cooperates with each protruding head bolt 62 to form a group of stop components. The stop components are provided in two groups and are arranged at intervals, so as to stop the contact part 51 at each tightening position, wherein the protruding head bolt 62 can be threadedly moved inside the connecting block 61, so as to adapt to the adjustment of the rotational clearance of the contact part 51.

[0051] In addition, in order to protect the contact portion 51, the tightening mechanism 100 also includes a buffer portion 7, which includes a plurality of fixed blocks 71 and a plurality of spring plungers 72, the outer peripheral side of each of the fixed blocks 71 is fixed to the mounting end surface 31, and one end of each of the spring plungers 72 is respectively penetrated to the outside of each of the fixed blocks 71 to abut against the contact portion 51; in this way, the spring plunger 72 abuts against the contact portion 51 to eliminate the stress generated by the rotation of the contact portion 51, thereby achieving buffer protection for the contact portion 51.

[0052] It should be noted that, in the present embodiment, two fixing blocks 71 are provided, and two spring plungers 72 are provided. Each fixing block 71 cooperates with each spring plunger 72 to form a group of buffer components. The buffer components are provided in two groups and are arranged at intervals, so as to buffer the contact portion 51 when it is in various tightening positions.

[0053] It should be explained that, in the present embodiment, two contact plates 511 are provided, and the two contact plates 511 are provided corresponding to the buffer portion 7 and the stopping portion 6 respectively.

[0054] In addition, in order to facilitate the use of the tightening mechanism 100, in the technical solution of the present invention, the tightening mechanism 100 also includes a mounting bracket 8, and the mounting bracket 8 is arranged on the outer peripheral side of the base 3. The outer wall of the mounting bracket 8 is fixed to the outer peripheral side of the base 3. The tightening mechanism 100 can be installed and fixed by the mounting bracket 8, providing different installation positions for the tightening mechanism 100 to improve practicality.

[0055] In addition, the tightening mechanism 100 also includes a rotating seat 9, which is protruding on the mounting end surface 31, and the mounting plate 4 is connected to the rotating seat 9. In this way, one end of the rotating seat 9 is fixed on the mounting end surface 31, and the mounting plate 4 rotates inside the rotating seat 9. The setting of the rotating seat 9 facilitates the rotation of the mounting plate 4.

[0056] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A tightening mechanism for tightening bolts on a differential, wherein a plurality of sets of bolts are arranged between the differential and the main reduction gear connected to the differential, characterized in that: The bolts in each group are arranged alternately, and the tightening mechanism includes: A base having a mounting end surface; A mounting plate is rotatably mounted on the mounting end surface along the thickness direction of the base, and a plurality of tightening parts are provided on the mounting plate; and The displacement structure comprises a contact portion and a limiting portion, wherein the limiting portion and the contact portion are arranged on the mounting end surface at intervals, the limiting portion has a clamping position for clamping with the mounting plate within its movable stroke, and the contact portion is drivingly connected to the mounting plate to form a plurality of tightening positions within the movable stroke of the mounting plate; Each of the tightening positions corresponds to each group of the bolts.

2. The tightening mechanism according to claim 1, characterized in that: The tightening part includes tightening guns, and each of the tightening guns is arranged around the mounting plate along the axial direction thereof.

3. The tightening mechanism according to claim 1, characterized in that: The contact portion includes a plurality of contact plates, and a driving portion is disposed on one of the contact plates.

4. The tightening mechanism according to claim 3, characterized in that: The driving part includes a first cylinder and a cylinder seat; The cylinder seat is fixed to the outer peripheral side of the base, one end of the first cylinder is hinged to the cylinder seat, and the other end is connected to one of the contact plates.

5. The tightening mechanism according to claim 1, characterized in that: The limiting part includes a second cylinder and a mounting seat; The mounting seat is fixed on the mounting end surface, and one end of the second cylinder is used to penetrate the outside of the mounting seat to limit the mounting plate.

6. The tightening mechanism according to claim 5, characterized in that: The limiting portion further includes a latch plate, one end of which along the thickness direction is connected to the mounting plate, and one end of the second cylinder is used to extend into the interior of the latch plate to limit the latch plate.

7. The tightening mechanism according to claim 1, characterized in that: The tightening mechanism also includes a stop portion, which includes a plurality of connecting blocks and a plurality of protruding head bolts. The outer peripheral side of each connecting block is fixed to the mounting end surface, and one end of each protruding head bolt is respectively penetrated to the outside of each connecting block to abut against the contact portion.

8. The tightening mechanism according to claim 1, characterized in that: The tightening mechanism also includes a buffer portion, which includes a plurality of fixed blocks and a plurality of spring plungers. The outer peripheral side of each of the fixed blocks is fixed to the mounting end surface, and one end of each of the spring plungers is respectively penetrated to the outside of each of the fixed blocks to abut against the contact portion.

9. The tightening mechanism according to claim 1, characterized in that: The tightening mechanism further includes a mounting bracket, and the mounting bracket is arranged on the outer peripheral side of the base.

10. The tightening mechanism according to claim 1, characterized in that: The tightening mechanism also includes a rotating seat, which is convexly arranged on the mounting end surface, and the mounting plate is connected to the rotating seat.

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