CN217618950U

CN217618950U - Bolt tightening device

Info

Publication number: CN217618950U
Application number: CN202220971228.5U
Authority: CN
Inventors: 任鹏伟; 高文博; 王川川; 石明春; 王亮; 陈关全
Original assignee: Liuzhou Wuling Automobile Industry Co Ltd
Current assignee: Liuzhou Wuling Automobile Industry Co Ltd
Priority date: 2022-04-25
Filing date: 2022-04-25
Publication date: 2022-10-21
Anticipated expiration: 2032-04-25

Abstract

The application relates to a bolt tightening device, which is used for tightening a bolt of a to-be-tightened piece; the bolt tightening device comprises a workbench, a tightening part and a limiting part; the workbench is provided with a base which is used for installing a piece to be tightened; the tightening part is used for tightening the bolt; the limiting part comprises a driving part and a limiting part, the driving part can drive the limiting part to move so that the limiting part is matched with a to-be-tightened part installed on the base, and the driving part can drive the limiting part to move so that the limiting part is separated from the to-be-tightened part until tightening torque of each bolt reaches preset torque; the limiting part and the to-be-tightened part are in a matched state, and the limiting part can limit the to-be-tightened part to be separated from the base. When the bolt of treating the packing piece is tightened, can avoid taking place because operating personnel error leads to partial bolt tightening moment unqualified to produce the piece that does not agree, the later stage produces the condition such as shake, abnormal sound easily under the installation user state, reduces the potential safety hazard, improves the security.

Description

Bolt tightening device

Technical Field

The application relates to the technical field of tool equipment, in particular to a bolt tightening device.

Background

The main speed reducer is the main part for reducing rotation speed and increasing torque in the automobile transmission system, and consists of differential mechanism, bearing and one or several pairs of speed reducing gear pairs. The driven gear is connected with the differential mechanism through a bolt, power is input from the driving gear and output to the differential mechanism through the driven gear, the planetary gear carrier is directly driven, and then the planetary gear drives the left half shaft and the right half shaft to respectively drive the left wheel and the right wheel.

When driven gear and differential mechanism were connected, operating personnel put into location frock with differential mechanism, driven gear in, then press both hands starting switch, the portion of tightening begins work to tighten the bolt, operating personnel visualizes the bolt and screws up the back that targets in place and do the through wire with the marker pen, qualified off-line is accomplished. However, if an operator has an operation error, the two-hand switch is not pressed down, or the bolt tightening torque is unqualified, and the operator does not confirm the tightening result, the unqualified part is mistakenly regarded as a qualified part, the unqualified part flows out of a station, the unqualified part is loaded to cause the speed reducer to shake, generate abnormal sound, even cause the condition of transmission failure, and the potential safety hazard is very large.

Therefore, for the tightening piece to be connected through the driven gear and the differential mechanism which are connected through the bolt, when the tightening operation is carried out on the bolt, the situation that the tightening torque of part of the bolt is unqualified due to the error of an operator, unqualified parts are generated, the situation that the shake, abnormal sound and the like are easily generated in the installation and use state in the later stage is avoided, the potential safety hazard is reduced, and the technical problem needs to be solved by technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

The utility model provides a device is tightened to bolt, when treating the bolt of tightening piece and tightening the operation, can avoid taking place because the operating personnel error leads to the tightening moment of part bolt unqualified to produce the piece of failing, the later stage produces the condition such as shake, abnormal sound easily under installation user state, reduces the potential safety hazard, improves the security.

In order to solve the technical problem, the application provides a bolt tightening device for tightening a bolt of a to-be-tightened piece; the bolt tightening device comprises a workbench, a tightening part and a limiting part; the workbench is provided with a base, and the base is used for mounting the piece to be tightened; the tightening part is used for tightening the bolt; the limiting part comprises a driving part and a limiting part, the driving part can drive the limiting part to move so as to enable the limiting part to be matched with a to-be-tightened part installed on the base, and the driving part can drive the limiting part to move so as to enable the limiting part to be separated from the to-be-tightened part until tightening torque of each bolt reaches preset torque; the limiting part and the to-be-fastened part are in a matched state, and the limiting part can limit the to-be-fastened part to be separated from the base.

When the tightening part is to be installed on the base, the driving part drives the limiting part to move to be matched with the tightening part, at the moment, the tightening part cannot be taken down, the tightening part can tighten the bolts of the tightening part, and when tightening torque of all the bolts reaches preset torque, the bolts are all in a tightening qualified state, the driving part can drive the limiting part to move to be separated from the tightening part, at the moment, the tightening part can be taken down, and tightening operation is completed. If the tightening torque of part of the bolt does not reach the preset torque, the bolt does not reach the tightening qualified state, the limiting part still keeps the limiting function, and the part to be tightened cannot be separated from the base. Therefore, when the to-be-tightened piece arranged on the base is taken down, all the bolts are in a tightened qualified state. Thereby avoid when taking place the bolt and leak to beat or individual bolt tighten unqualified, wait to tighten the piece and be taken off as qualified promptly, and then avoid causing the potential safety hazard in later stage installation use.

Optionally, the workstation still is equipped with and rotates the piece, it can drive to rotate the base for the workstation rotates.

Optionally, the base is further provided with a positioning structure matched with the to-be-tightened piece, and the base can drive the to-be-tightened piece to rotate relative to the base through the positioning structure.

Optionally, the tightening part comprises two sets of tightening members, and the two sets of tightening members are symmetrically arranged on two sides of the rotation axis of the base.

Optionally, the limiting member includes an arc-shaped clamping member, the arc-shaped clamping member is adapted to at least part of the edge shape of the member to be tightened, and can be matched with the member to be tightened from one side of the member to be tightened, which is far away from the base.

Optionally, the limiting member is detachably connected to the driving member.

Optionally, the driving part is an air cylinder or a hydraulic cylinder and is arranged on the workbench, and the limiting part is connected with a piston rod of the air cylinder or the hydraulic cylinder.

Optionally, the tightening mechanism further comprises a controller and a display, the controller is connected with the tightening part, the display and the driving piece respectively, the display is used for displaying tightening torque of the tightening part, and the controller is used for controlling the driving piece to drive the limiting piece to move when tightening torque of each bolt reaches preset torque, so that the limiting piece is separated from the to-be-tightened piece.

Optionally, the workstation still is equipped with electromagnetic inductor, electromagnetic inductor is used for the response whether location portion is installed wait to tighten the piece, just electromagnetic inductor with controller signal connection.

Drawings

Fig. 1 is a schematic structural diagram of a bolt tightening device provided in an embodiment of the present application;

fig. 2 is a front view of fig. 1.

In fig. 1-2, the reference numerals are illustrated as follows:

1-a workbench, 11-a base;

2-a limiting part, 21-a driving part, 22-a limiting part, 221-an arc-shaped clamping piece, 23-a piston rod and 24-a bracket;

3-a member to be tightened, 31-bolts, 32-a differential, 33-a driven gear;

4-electromagnetic inductor.

Detailed Description

In order to make the technical solutions of the present application better understood by those skilled in the art, the present application is further described in detail with reference to the accompanying drawings and specific embodiments.

The embodiment of the application provides a bolt tightening device for tighten the bolt 31 of waiting to tighten piece 3, it is concrete, it includes first part, second part and bolt 31 to wait to tighten piece 3, first part and second part pass through bolt 31 fixed, during the installation, pass through bolt 31 preliminary installation with first part and second part earlier, but bolt 31 is not tightened, then the bolt tightening device that accessible this embodiment provided is tightened the bolt 31 of waiting to tighten piece 3 after preliminary installation is accomplished and is tightened the operation.

Specifically, in this embodiment, the first component and the second component are not limited, for example, the first component is a differential 32 of a main speed reducer, the second component is a driven gear 33 of the main speed reducer, the driven gear 33 is connected with the differential 32 through a bolt 31, power is input from a driving gear and output to the differential 32 through the driven gear 33, the power directly drives a planet carrier, and then the planet gear drives a left half shaft and a right half shaft to respectively drive a left wheel and a right wheel, so as to play a role in reducing the rotation speed and increasing the torque in an automobile transmission system.

Driven gear 33 and differential 32 are at the in-process of connecting through bolt 31, if take place bolt 31 and leak or tighten the unqualified condition of moment, will produce unqualified spare, if unqualified loading can lead to the reduction gear shake, produce abnormal sound, can cause the problem of transmission inefficacy even, have very big potential safety hazard. Therefore, through the bolt tightening device that this embodiment provided, can ensure to pass the tightening moment of each bolt 31, avoid unqualified piece to flow out, reduce the production of trouble piece, ensure the security.

As shown in fig. 1 and fig. 2, the bolt tightening device provided in this embodiment includes a workbench 1, a tightening part, and a limiting part 2, wherein the workbench 1 is provided with a base 11, and the base 11 is used for mounting a member to be tightened 3; when the member to be tightened 3 is mounted on the base 11, the limiting portion 2 can limit the member to be tightened 3 to be separated from the base 11, the tightening portion can tighten each bolt 31 of the member to be tightened 3, and when tightening torques of all the bolts 31 reach preset torques, it is indicated that each bolt 31 is in a tightening qualified state, the limiting portion 2 can release the limiting effect, so that the member to be tightened 3 can be separated from the base 11. If the tightening torque of some bolts 31 does not reach the preset torque, the bolts 31 do not reach the tightening qualified state, the limiting part 2 still keeps the limiting function, and the member to be tightened 3 cannot be separated from the base 11. Thereby avoid when taking place bolt 31 and leaking to beat or individual bolt 31 tighten unqualified, wait to beat and tightly 3 and regard as qualified piece promptly and take off, and then avoid causing the potential safety hazard in the installation use in later stage.

Specifically, the limiting portion 2 includes a driving member 21 and a limiting member 22, wherein the driving member 21 can drive the limiting member 22 to move, so that the limiting member 22 is to be fastened to the base 3 in a matching manner or in a separation manner, when the limiting member 22 is in a matching state with the member 3 to be fastened, the member 3 to be fastened cannot be separated from the base 11, and when the limiting member 22 is separated from the member 3 to be fastened, the member 3 to be fastened can be separated from the base 11.

After the tightening part 3 is mounted on the base 11, the driving part 21 drives the limiting part 22 to move to be matched with the tightening part 3, at this time, the tightening part 3 cannot be taken down, until the tightening part tightens each bolt 31 and tightening torque of each bolt 31 reaches preset torque, the driving part 21 drives the limiting part 22 to move to be separated from the tightening part 3, at this time, the tightening part 3 can be taken down, and tightening operation is completed. Therefore, when the to-be-tightened piece 3 installed on the base 11 is taken down, all the bolts 31 are in a tightening qualified state.

The bolt tightening device provided by the embodiment further comprises a controller and a display, wherein the controller is respectively connected with the tightening part, the display and the driving part 21, wherein the display can be used for displaying tightening torque of the tightening part and tightening conditions of the bolts 31, and can display an alarm signal when tightening torque of individual bolts 31 does not reach preset torque, the controller can control tightening operation of the tightening part, and when tightening torque of each bolt 31 reaches the preset torque, the controller controls the driving part 21 to drive the limiting part 22 to move so as to be separated from the to-be-tightened part 3.

The bolt tightening device in the prior art is also provided with a corresponding display and a controller, the controller can be respectively connected with the tightening part and the display, the display can display the tightening condition of each bolt 31, an alarm signal can be displayed when the tightening torque of the individual bolt 31 does not reach the preset torque, and the controller can control the tightening operation of each tightening part. In the bolt tightening device provided by the embodiment of the application, the controller can also control the driving function of the driving part 21 according to whether the tightening torque of all the bolts 31 reaches the preset torque, and when the tightening torque of all the bolts 31 reaches the preset torque, the controller can send a limit releasing control signal to the driving part 21, so that the driving part 21 drives the limiting part 22 to move to be separated from the to-be-tightened part 3. If the tightening torque of individual bolt 31 does not reach the preset torque, it is described that the tightening state of part of the bolt 31 is unqualified, at the moment, the controller cannot send a signal for releasing the limit control to the driving piece 21, the tightening piece 3 cannot be separated from the base 11, and even if the operator does not see the alarm information of the display, the tightening piece 3 cannot be taken down, so that a prompt is provided for the operator, the operator can check the tightening piece in time, and the situation that the unqualified tightening piece flows into the market as a qualified piece and causes potential safety hazards is avoided.

The signal connection mentioned herein may be connected by a connection wire, or may be connected wirelessly by bluetooth, infrared, etc., and is not limited in detail herein, and how the controller obtains the tightening torque of each bolt 31 through the tightening part and selectively sends the limit-releasing control signal to the driving member 21 according to the tightening torque of each bolt 31.

As shown in fig. 2, in this embodiment, the bolt 31 further includes an electromagnetic inductor 4 disposed on the workbench 1, the electromagnetic inductor 4 is in signal connection with the controller, after the to-be-tightened member 3 is mounted on the base 11, the electromagnetic inductor 4 can sense that the to-be-tightened member 3 is mounted in place, and when the electromagnetic inductor 4 senses that the to-be-tightened member 3 is mounted in place, the controller can control the driving member 21 to drive the limiting member 22 to move so as to cooperate with the to-be-tightened member 3, thereby completing the fixing operation of the to-be-tightened member 3. Then, the operator can manually open the tightening part, or send a tightening signal to the tightening part through the controller, so that the tightening part can perform tightening operation on each bolt 31 of the to-be-tightened piece 3.

The workbench 1 is further provided with a rotating part (not shown in the figure), the rotating part can drive the base 11 to rotate relative to the workbench 1, in this way, the base 11 can drive the to-be-tightened part 3 to rotate relative to the workbench 1, and the position of the tightening part relative to the workbench 1 is fixed, so that the base 11 drives the to-be-tightened part 3 to rotate, and the tightening part can sequentially tighten the bolts 31 at all positions. Of course, in this embodiment, the bolts 31 at the respective positions may be tightened in sequence by moving the tightening unit with respect to the table 1, and when the rotating member is provided to drive the base 11 to rotate with respect to the table 1, the overall structure can be simplified.

The rotating part can also be in signal connection with the controller, the driving condition of the rotating part is controlled through the controller, the rotating angle of the base 11 is obtained, and then whether tightening operation is carried out on each bolt 31 is judged according to the rotating angle of the base 11.

Specifically, in this embodiment, the specific structure of the rotating member is not limited, for example, the rotating member may be a motor, the motor is disposed on the workbench 1, and a spindle of the motor can be in transmission connection with the base 11, so that the base 11 rotates around the spindle relative to the workbench 1. Or, the rotating part can be set to be a structure comprising a motor and a transmission gear, a tooth structure is arranged on the edge of the base 11 along the circumferential direction, a main shaft of the motor is connected with the transmission gear, the transmission gear is meshed with the tooth structure, and when the motor drives the transmission gear to rotate, the base 11 can be driven to rotate through the meshing effect of the transmission gear and the tooth structure. In order to ensure that the base 11 can rotate smoothly relative to the worktable 1, a bearing may be further disposed between the base 11 and the worktable 1.

Base 11 still is equipped with location structure, this location structure with wait to tighten 3 looks adaptations, base 11 can pass through location structure and wait to tighten 3 cooperations to realize that base 11 can drive when rotating and wait to tighten 3 and rotate. Specifically, in this embodiment, the specific shape and structure of the positioning structure are not limited, and the positioning structure may be set according to the specific structure of the member to be fastened 3. If wait to tighten piece 3 when including differential 32 and driven gear 33, driven gear 33 installs in differential 32, and this differential 32's bottom has local downward convex structure, and the location structure can be according to this convex structure setting for the two after the cooperation, can realize synchronous rotation can.

Of course, in this embodiment, base 11 also can not set up location structure, directly will treat to tie 3 and place in base 11, accessible frictional force realizes synchronous rotation between the two, and location structure's setting, at first can treat to tie 3 the installation fix a position, be convenient for find the mounted position who treats tie 3 fast, and, base 11 and the stability of action between 3 of waiting to tie can also be guaranteed in location structure's setting, avoid taking place the condition of skidding between the two, and then guarantee that base 11 drives and treat to tie 3 and rotate to the portion of tightening when, the bolt 31 of waiting to tie can rotate to the portion of tightening.

In this embodiment, the specific structure of the tightening part is not limited, and for example, the tightening part may be configured to include two sets of tightening members, which are symmetrically disposed on both sides of the rotation axis of the base 11, respectively, so as to tighten the bolt 31 of the to-be-tightened member 3 from the symmetrical both sides. Through two sets of tightening pieces treat tightening piece 3's bolt 31 simultaneously and operate, can guarantee the efficiency of tightening to, two sets of tightening pieces can be respectively from relative both sides to the operation of tightening bolt 31, and therefore, can guarantee that each bolt 31 tightens evenly, only need once tighten to same bolt 31 operate can, need not to tighten same bolt 31 many times, improve the efficiency of tightening.

In this embodiment, the specific structure of the tightening member is not limited, and the tightening member may be purchased directly from the market, for example, the tightening member includes a tightening gun body, a signal transmission control line, a display screen, and the like, where the tightening gun body is used for acting on the bolt 31 to tighten the bolt 31, the signal transmission control line may be connected to the controller to realize signal transmission between the tightening gun body and the bolt, and the display screen may display information such as the current tightening torque.

In this embodiment, the specific structure of the limiting member 22 is not limited, as shown in fig. 1, the limiting member 22 includes an arc-shaped clamping member 221, the arc-shaped clamping member 221 is adapted to the circumferential shape of the member to be tightened 3, and can be matched with the member to be tightened 3 from one side of the member to be tightened 3 away from the base 11, where the matching may be direct contact, or a gap may be left between the two, and it is sufficient to limit the member to be tightened 3 to move to one side away from the base 11. When the member 3 to be tightened comprises the differential gear 32 and the driven gear 33, the driven gear 33 is installed above the differential gear 32, the arc-shaped clamping piece 221 can be matched with the edge of the driven gear 33 along the circumferential direction of the driven gear 33, at this time, the arc-shaped clamping piece 221 is of an arc-shaped structure, of course, the arc-shaped clamping piece 221 is not necessarily in an arc shape, and the specific shape of the arc-shaped clamping piece 221 can be set according to the edge shape of the member 3 to be tightened. Moreover, the arc clamping piece 221 does not need to be completely arranged along a circle of the member to be tightened 3, and the arc clamping piece 221 can only be partially matched with the member to be tightened 3 in the circumferential direction.

Or, in this embodiment, the plurality of limiting members 22 may be arranged to limit the to-be-fastened member 3 at intervals in the circumferential direction, and when the limiting members 22 include the arc-shaped fastener 221, the number of the limiting members 22 can be reduced, so as to simplify the overall structure and reduce the cost.

Furthermore, the limiting part 22 is detachably connected with the driving part 21, and the arc-shaped clamping piece 221 is matched with the to-be-tightened piece 3 in shape, so that the corresponding limiting part 22 can be replaced for the to-be-tightened piece 3 in different shapes or different sizes, other parts of the bolt tightening device do not need to be replaced, and the bolt tightening device can be more flexibly used due to the arrangement. In particular, how the retaining member 22 and the driving member 21 are connected is not limited in particular, and may be fixed by a fastening member, a clamping member connection or a snap connection.

In this embodiment, the driving member 21 is an air cylinder or a hydraulic cylinder and is disposed on the worktable 1, and the limiting member 22 is connected to a piston rod 23 of the air cylinder or the hydraulic cylinder, but in this embodiment, the driving member 21 is not limited as long as the driving member 21 can drive the limiting member 22 to move so as to engage with or disengage from the member to be tightened 3. If the driving member 21 can be provided as both a motor and a lead screw assembly, and the driving member 21 can be provided as an air cylinder or a hydraulic cylinder, the overall structure can be simplified. As shown in fig. 1 and 2, a bracket 24 is further provided between the driving member 21 and the working platform 1, and the bracket 24 may be set according to actual conditions, such as the height of the member to be tightened 3 and the height of the driving member 21.

The foregoing is only a preferred embodiment of the present application and it should be noted that those skilled in the art can make several improvements and modifications without departing from the principle of the present application, and these improvements and modifications should also be considered as the protection scope of the present application.

Claims

1. A bolt tightening device is used for tightening a bolt (31) of a piece (3) to be tightened; the bolt tightening device is characterized by comprising a workbench (1), a tightening part and a limiting part (2);

the workbench (1) is provided with a base (11), and the base (11) is used for installing the to-be-tightened piece (3);

the tightening part is used for tightening the bolt (31);

the limiting part (2) comprises a driving part (21) and a limiting part (22), the driving part (21) can drive the limiting part (22) to move, so that the limiting part (22) is matched with a to-be-tightened part (3) installed on the base (11), and the driving part (21) can drive the limiting part (22) to move until tightening torques of the bolts (31) reach preset torques, so that the limiting part (22) is separated from the to-be-tightened part (3);

the limiting part (22) and the member to be tightened (3) are in a matched state, and the limiting part (22) can limit the member to be tightened (3) to be separated from the base (11).

2. Bolt tightening device according to claim 1, characterized in that the table (1) is further provided with a rotating member that can drive the base (11) to rotate relative to the table (1).

3. The bolt tightening device according to claim 2, characterized in that the base (11) is further provided with a positioning structure matched with the member to be tightened (3), and the base (11) can drive the member to be tightened (3) to rotate relative to the base (11) through the positioning structure.

4. Bolt tightening device according to claim 2 or 3, characterized in that the tightening part comprises two sets of tightening members, which are symmetrically provided on both sides of the rotational axis of the base (11).

5. A bolt tightening device according to any one of claims 1-3, characterized in that the limiting member (22) comprises an arc-shaped catch (221), and the arc-shaped catch (221) is adapted to at least a part of the edge shape of the member to be tightened (3) and can be engaged with the member to be tightened (3) from the side of the member to be tightened (3) away from the base (11).

6. Bolt tightening device according to claim 5, characterized in that the retaining element (22) is detachably connected to the drive element (21).

7. Bolt tightening device according to any one of claims 1-3, characterized in that the drive member (21) is a pneumatic or hydraulic cylinder and is arranged on the table (1), and the stop member (22) is connected to a piston rod (23) of the pneumatic or hydraulic cylinder.

8. The bolt tightening device according to any one of claims 1 to 3, further comprising a controller and a display, wherein the controller is respectively connected to the tightening portion, the display and the driving member (21), the display is used for displaying tightening torque of the tightening portion, and the controller is used for controlling the driving member (21) to drive the limiting member (22) to move when tightening torque of each bolt (31) reaches a preset torque, so that the limiting member (22) is separated from the member to be tightened (3).

9. The bolt tightening device according to claim 8, characterized in that the workbench (1) is further provided with an electromagnetic inductor (4), the electromagnetic inductor (4) is used for inducing whether the base is provided with the member to be tightened (3), and the electromagnetic inductor (4) is in signal connection with the controller.