CN215374335U - Bolt torque calibration device - Google Patents

Abstract

The utility model belongs to the technical field of torque verification devices, and particularly relates to a bolt torque verification device. Comprises a controller, an operation platform, a robot with a mechanical arm and a checking mechanism; the robot is fixed on the operating platform, one end of the mechanical arm is connected with the robot, and the other end of the mechanical arm is connected with the checking mechanism; the checking mechanism comprises an electric wrench for performing tightening checking on the bolt; the robot and the electric wrench are both electrically connected with the controller. The bolt torque calibration device provided by the utility model realizes mechanical inspection, is simple and quick to operate, effectively improves the working efficiency and reduces the working strength; the checking mechanism provided by the utility model can respectively check bolts screwed on one side and bolts with nuts and needing to be screwed on two sides, and is complete in function.

Description

Bolt torque calibration device

Technical Field

The utility model belongs to the technical field of torque verification devices, and particularly relates to a bolt torque verification device.

Background

The speed per hour of the CRH motor train unit is up to more than 300km/h, and in order to ensure the safe operation of the motor train unit, the brake disc bolts on the motor train unit must be ensured not to be loosened. Therefore, the bogie needs to be disassembled, and the bolt torque of the brake disc mounted on the bogie wheel set needs to be checked. At present, manual verification is adopted for checking the bolt torque of a brake disc of the motor train unit, a mode of a common torque wrench and an open end wrench is adopted for checking, and the efficiency is low.

There are some devices specially aiming at torque verification in the prior art, for example, patent CN207263369U discloses an intelligent torque verification platform, although the device can verify torque, the device aims at torque wrench verification, and improves the verification accuracy of torque wrench; this device does not allow to verify the torque of the wheel on the bolts on the brake disc.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model provides the bolt torque checking device, and the working efficiency is effectively improved.

In order to solve the technical problems, the utility model adopts the technical scheme that: a bolt torque calibration device comprises a controller, an operation platform, a robot with a mechanical arm and a calibration mechanism; the robot is fixed on the operating platform, one end of the mechanical arm is connected with the robot, and the other end of the mechanical arm is connected with the checking mechanism; the checking mechanism comprises an electric wrench for performing tightening checking on the bolt; the robot and the electric wrench are both electrically connected with the controller. The robot controls the mechanical arm to move, so that the checking mechanism is moved to the position near the wheel pair brake disc, the checking mechanism is connected with the bolt on the brake disc, and checking operation is achieved. During specific operation, a wrench head of the electric wrench is connected with the bolt, and the wrench head is rotated to realize the operation of screwing the bolt, so that the checking work is realized; need not artifical bolt and go to screw up the check-up one by one, effectively improved work efficiency.

In one embodiment, the checking mechanism further comprises a locking driving mechanism for fixing the nut and checking the nut to be screwed; the output end of the locking driving mechanism and the output end of the electric wrench are positioned on the same horizontal line and are arranged in opposite directions. Some bolts on the brake disc are not provided with nuts and directly penetrate into the brake disc, some bolts are provided with nuts and penetrate through the brake disc, and the bolts without the nuts can directly realize the calibration operation through an electric wrench; the bolt with the nut needs to be checked at the same time; for the bolt with the nut, during operation, one end of the bolt is connected with the bolt through an electric wrench, and the other end of the bolt is connected with the nut through a locking driving mechanism; when the bolt is rotated to carry out torque verification, the locking driving mechanism is fixed, and the nut is locked; when the nut is rotated to check the torque, the electric wrench is fixed, the bolt is locked, the locking driving mechanism rotates, and the driving nut rotates.

In one embodiment, the checking mechanism further comprises a mounting frame, the mounting frame is fixedly connected with the mechanical arm, and the electric wrench and the locking driving mechanism are both mounted on the mounting frame.

In one embodiment, the electric wrench comprises a first motor and a wrench head, wherein an output shaft of the motor is connected with the wrench head to drive the wrench head to rotate.

In one embodiment, the locking driving mechanism comprises a transverse moving mechanism, a mounting plate, a nut tightening mechanism and a locking mechanism; the transverse moving mechanism is transversely fixed on the mounting frame, and the output end of the transverse moving mechanism is connected with the mounting plate to drive the mounting plate to transversely move back and forth; the nut screwing mechanism and the locking mechanism are both arranged on the mounting plate, and the locking mechanism is connected with an output shaft of the nut screwing mechanism and used for limiting the rotation of the output shaft. The transverse moving mechanism is used for adjusting the distance between the locking driving mechanism and the electric wrench so as to adapt to brake discs with different thicknesses.

In one embodiment, the nut tightening mechanism comprises a second motor, a rotating shaft and a sleeve connected with the nut; the second motor is arranged on the mounting plate, one end of the rotating shaft is connected with an output shaft of the second motor, and the other end of the rotating shaft is connected with the sleeve. The sleeve is sleeved on the nut and is in interference fit with the nut, or the sleeve is a hexagonal sleeve with the same structure as the nut; the second motor drives the rotating shaft to rotate, so that the sleeve is driven to rotate, and the nut is screwed up.

In one embodiment, a bearing seat for supporting the rotating shaft is further arranged on the mounting plate, and the rotating shaft is rotatably connected with the bearing seat through a bearing. The rotating shaft is connected with the bearing seat through the bearing, so that the stability of the rotating shaft can be improved, and the rotating shaft is prevented from swinging.

In one embodiment, the locking mechanism comprises a first bevel gear, a second bevel gear and a driving cylinder, the driving cylinder is fixed on the mounting plate, the first bevel gear is sleeved on the rotating shaft, the second bevel gear is connected with a piston rod of the driving cylinder, and the first bevel gear is meshed with the second bevel gear. When the rotating shaft needs to be rotated, the driving cylinder drives the second bevel gear to retract, the second bevel gear is separated from the first bevel gear, and the rotating shaft can rotate; when the nut needs to be fixed and the bolt is rotated, the driving cylinder drives the second bevel gear to move towards the direction of the first bevel gear and is meshed with the first bevel gear.

In one embodiment, the mechanical arm comprises a first connecting arm and a second connecting arm, one end of the first connecting arm is rotatably connected with the robot main body, the other end of the first connecting arm is rotatably connected with the second connecting arm, and the other end of the second connecting arm is connected with the verification mechanism. The arm is equipped with first linking arm and second linking arm, and the home range of arm is wider like this, and the operation is more nimble.

In one embodiment, the operating platform is a gantry structure; the operating platform is provided with a propping mechanism for limiting the upward moving distance of the wheel pair; the two groups of abutting mechanisms are respectively positioned at the left side and the right side of the mechanical arm; the abutting mechanism comprises a support frame, a limiting column and a cushion pad; the support frame and the operation panel fixed connection, spacing post vertical be fixed in on the support frame, the blotter be fixed in the bottom of spacing post. When the torque is checked, the wheel set needs to be supported and rotates, and when the wheel set is supported and moves upwards to a distance away from the ground, the wheel set does not move upwards any longer after being mutually abutted with the cushion pad of the abutting mechanism, so that the limiting effect is realized; on the other hand, the pressing mechanism can also apply downward pressure to the wheel set through the abutting mechanism, so that the wheel set can be prevented from shaking to a certain extent.

Compared with the prior art, the beneficial effects are: the bolt torque calibration device provided by the utility model realizes mechanical inspection, is simple and quick to operate, effectively improves the working efficiency and reduces the working strength; the checking mechanism provided by the utility model can respectively check bolts screwed on one side and bolts with nuts and needing to be screwed on two sides, and is complete in function.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

FIG. 2 is a schematic diagram of the structure of the verification mechanism of the present invention.

Reference numerals: 1. an operation table; 2. a robot; 3. a mechanical arm; 4. a verification mechanism; 41. an electric wrench; 411. a first motor; 412. a wrench head; 42. locking the driving mechanism; 421. a lateral movement mechanism; 422. mounting a plate; 423. a rotating shaft; 424. a sleeve; 425. a driving cylinder; 426. a first bevel gear; 427. a second bevel gear; 43. a mounting frame; 5. a tightening mechanism; 51. a support frame; 52. a limiting column; 53. a cushion pad.

Detailed Description

The drawings are for illustration purposes only and are not to be construed as limiting the utility model; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the utility model.

As shown in fig. 1 and 2, a bolt torque verification apparatus includes a controller, an operation table 1, a robot 2 having a robot arm 3, and a verification mechanism 4; the robot 2 is fixed on the operation table 1, one end of the mechanical arm 3 is connected with the robot 2, and the other end of the mechanical arm is connected with the checking mechanism 4; the checking mechanism 4 includes an electric wrench 41 for performing tightening check on the bolt; the robot 2 and the electric wrench 41 are both electrically connected with the controller. The robot 2 controls the mechanical arm 3 to move, so that the checking mechanism 4 is moved to the position near the wheel pair brake disc, the checking mechanism 4 is connected with the bolt on the brake disc, and checking operation is achieved. During specific operation, the wrench head 412 of the electric wrench 41 is connected with the bolt, and the operation of screwing the bolt is realized by rotating the wrench head 412, so that the verification work is realized; need not artifical bolt and go to screw up the check-up one by one, effectively improved work efficiency.

As shown in fig. 1 and 2, in one embodiment, the verification mechanism 4 further comprises a lock drive mechanism 42 for securing the nut and verifying the tightening of the nut; the output end of the locking driving mechanism 42 and the output end of the electric wrench 41 are located on the same horizontal line and are disposed opposite to each other. Some bolts on the brake disc are not provided with nuts and directly penetrate into the brake disc, some bolts are provided with nuts and penetrate through the brake disc, and the bolts without the nuts can directly realize the verification operation through the electric wrench 41; the bolt with the nut needs to be checked at the same time; for the bolt with the nut, during operation, one end of the bolt is connected with the bolt through the electric wrench 41, and the other end of the bolt is connected with the nut through the locking driving mechanism 42; when the bolt is rotated to check the torque, the locking driving mechanism 42 is fixed and the nut is locked; when the nut is rotated to check the torque, the electric wrench 41 is fixed, the bolt is locked, the locking driving mechanism 42 rotates, and the nut is driven to rotate.

In some embodiments, the verification mechanism 4 further includes a mounting bracket 43, the mounting bracket 43 is fixedly connected to the robot arm 3, and the electric wrench 41 and the locking driving mechanism 42 are mounted on the mounting bracket 43.

In another embodiment, as shown in fig. 2, the electric wrench 41 includes a first motor 411 and a wrench head 412, and an output shaft of the motor is connected to the wrench head 412 to drive the wrench head 412 to rotate.

As shown in fig. 2, in one embodiment, the lock driving mechanism 42 includes a lateral moving mechanism 421, a mounting plate 422, a nut tightening mechanism, and a locking mechanism; the transverse moving mechanism 421 is transversely fixed on the mounting frame 43, and the output end of the transverse moving mechanism 421 is connected with the mounting plate 422 to drive the mounting plate 422 to transversely move back and forth; the nut tightening mechanism and the locking mechanism are both mounted on the mounting plate 422, and the locking mechanism is connected with an output shaft of the nut tightening mechanism and used for limiting the rotation of the output shaft. The lateral movement mechanism 421 is used to adjust the distance between the locking driving mechanism 42 and the electric wrench 41 to accommodate brake discs of different thicknesses.

As shown in fig. 2, in one embodiment, the nut tightening mechanism includes a second motor, a rotating shaft 423, and a sleeve 424 for coupling with the nut; the second motor is mounted on the mounting plate 422, one end of the rotating shaft 423 is connected with an output shaft of the second motor, and the other end is connected with the sleeve 424. The sleeve 424 is sleeved on the nut and is in interference fit with the nut, or the sleeve 424 is a hexagonal sleeve 424 with the same structure as the nut; the second motor drives the rotating shaft 423 to rotate, so as to drive the sleeve 424 to rotate, and the nut is screwed down.

In some embodiments, a bearing seat for supporting the rotating shaft 423 is further disposed on the mounting plate 422, and the rotating shaft 423 is rotatably connected to the bearing seat through a bearing. The rotating shaft 423 is connected with the bearing seat through a bearing, so that the stability of the rotating shaft 423 can be improved, and the rotating shaft 423 is prevented from swinging.

In another embodiment, as shown in fig. 2, the locking mechanism comprises a first bevel gear 426, a second bevel gear 427, and a driving cylinder 425, the driving cylinder 425 is fixed on the mounting plate 422, the first bevel gear 426 is sleeved on the rotating shaft 423, the second bevel gear 427 is connected with a piston rod of the driving cylinder 425, and the first bevel gear 426 is engaged with the second bevel gear 427. When the rotating shaft 423 needs to be rotated, the driving cylinder 425 drives the second bevel gear 427 to retract, so that the rotating shaft 423 can rotate after being separated from the first bevel gear 426; when the nut needs to be fixed and the bolt is rotated, the driving cylinder 425 drives the second bevel gear 427 to move towards the first bevel gear 426 to be meshed with the first bevel gear 426, and since the second bevel gear 427 and the driving cylinder 425 are fixed, the rotation of the rotating shaft 423 is limited through the connection between the second bevel gear 427 and the first bevel gear 426, so that the nut is fixed.

As shown in fig. 1, in some embodiments, the robot arm 3 includes a first connecting arm and a second connecting arm, one end of the first connecting arm is rotatably connected to the main body of the robot 2, the other end of the first connecting arm is rotatably connected to the second connecting arm, and the other end of the second connecting arm is connected to the verification mechanism 4. The mechanical arm 3 is provided with a first connecting arm and a second connecting arm, so that the movable range of the mechanical arm 3 is wider, and the operation is more flexible.

As shown in fig. 1, in one embodiment, the operation table 1 is a gantry structure; a pressing mechanism 5 for limiting the upward moving distance of the wheel pair is arranged on the operating platform 1; the two groups of abutting mechanisms 5 are arranged at least and are respectively positioned at the left side and the right side of the mechanical arm 3; the abutting mechanism 5 comprises a support frame 51, a limiting column 52 and a cushion pad 53; support frame 51 and operation panel 1 fixed connection, spacing post 52 is vertical to be fixed in on support frame 51, and blotter 53 is fixed in the bottom of spacing post 52. When the torque is checked, the wheel set needs to be supported and rotated, and when the wheel set is supported and moves upwards to be far away from the ground, the wheel set does not move upwards any more after being mutually abutted with the cushion pad 53 of the abutting mechanism 5, so that the limiting effect is realized; on the other hand, a downward pressure can be applied to the wheel pair through the abutting mechanism 5, and the wheel pair can be prevented from shaking to a certain extent.

When the checking is carried out, the wheel pair is supported, the mechanical arm 3 is operated to enable the checking mechanism 4 to be aligned to the bolts, the bolts are screwed down and checked, after one group of bolts are checked, the wheel pair is rotated, the other group of bolts are located at an operation station, namely, between the electric wrench 41 and the sleeve 424, and therefore the mechanical arm 3 does not need to be operated all the time, and only the wheel pair needs to be rotated.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. The bolt torque calibration device is characterized by comprising a controller, an operation table (1), a robot (2) with a mechanical arm (3) and a calibration mechanism (4); the robot (2) is fixed on the operating platform (1), one end of the mechanical arm (3) is connected with the robot (2), and the other end of the mechanical arm is connected with the checking mechanism (4); the checking mechanism (4) comprises an electric wrench (41) for performing tightening checking on the bolt;

the robot (2) and the electric wrench (41) are electrically connected with the controller.

2. The bolt torque verification device according to claim 1, wherein said verification means (4) further comprises a lock drive mechanism (42) for securing the nut and verifying the tightening of the nut; the output end of the locking driving mechanism (42) and the output end of the electric wrench (41) are positioned on the same horizontal line and are arranged oppositely.

3. The bolt torque verification device according to claim 2, wherein the verification mechanism (4) further comprises a mounting frame (43), the mounting frame (43) is fixedly connected with the mechanical arm (3), and the electric wrench (41) and the locking driving mechanism (42) are both mounted on the mounting frame (43).

4. The bolt torque verification device according to claim 3, wherein the electric wrench (41) comprises a first motor (411) and a wrench head (412), and an output shaft of the motor is connected with the wrench head (412) to drive the wrench head (412) to rotate.

5. The bolt torque verification device according to claim 4, wherein the locking driving mechanism (42) comprises a lateral moving mechanism (421), a mounting plate (422), a nut tightening mechanism, and a locking mechanism; the transverse moving mechanism (421) is transversely fixed on the mounting frame (43), and the output end of the transverse moving mechanism (421) is connected with the mounting plate (422) to drive the mounting plate (422) to transversely move back and forth; the nut screwing mechanism and the locking mechanism are both arranged on the mounting plate (422), and the locking mechanism is connected with an output shaft of the nut screwing mechanism and used for limiting the rotation of the output shaft.

6. The bolt torque verifier device of claim 5, wherein the nut tightening mechanism includes a second motor, a shaft (423), and a sleeve (424) for coupling with the nut; the second motor is arranged on the mounting plate (422), one end of the rotating shaft (423) is connected with an output shaft of the second motor, and the other end of the rotating shaft is connected with the sleeve (424).

7. The bolt torque verification device according to claim 6, wherein a bearing seat for supporting the rotating shaft (423) is further arranged on the mounting plate (422), and the rotating shaft (423) is rotatably connected with the bearing seat through a bearing.

8. The bolt torque verification device according to claim 6, wherein the locking mechanism comprises a first bevel gear (426), a second bevel gear (427), and a driving cylinder (425), the driving cylinder (425) is fixed on the mounting plate (422), the first bevel gear (426) is sleeved on the rotating shaft (423), the second bevel gear (427) is connected with a piston rod of the driving cylinder (425), and the first bevel gear (426) and the second bevel gear (427) are meshed.

9. The bolt torque verification device according to any one of claims 1 to 8, wherein the mechanical arm (3) comprises a first connecting arm and a second connecting arm, one end of the first connecting arm is rotatably connected with the robot (2) main body, the other end of the first connecting arm is rotatably connected with the second connecting arm, and the other end of the second connecting arm is connected with the verification mechanism (4).

10. The bolt torque verification device according to claim 9, wherein the operation table (1) is a gantry structure; a propping mechanism (5) for limiting the upward moving distance of the wheel pair is arranged on the operating platform (1); the two groups of abutting mechanisms (5) are arranged at least and are respectively positioned at the left side and the right side of the mechanical arm (3); the abutting mechanism (5) comprises a support frame (51), a limiting column (52) and a cushion pad (53); support frame (51) and operation panel (1) fixed connection, spacing post (52) vertical be fixed in on support frame (51), blotter (53) be fixed in the bottom of spacing post (52).

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