Tightening equipment

Abstract

The invention discloses tightening equipment, and relates to the technical field of mechanical assembly, and a tightening assembly comprises a driving assembly and a sensor group; the first output end of the driving assembly is connected with a first tightening assembly, the second output end of the driving assembly is connected with a second tightening assembly, and the distance between the first tightening assembly and the second tightening assembly is within a preset value range; a plurality of bolts and other structures needing to be screwed are screwed or loosened through the first screwing assembly and the second screwing assembly, and the screwing or unscrewing efficiency is improved; the distance between the first tightening assembly and the second tightening assembly is calculated according to feedback data of the sensor group, and the driving assembly is adjusted to enable the distance between the first tightening assembly and the second tightening assembly to be within the preset range, so that the problem that the first tightening assembly and the second tightening assembly are damaged due to too small distance is avoided, and the problem that the first tightening assembly and the second tightening assembly are damaged due to too large distance is also avoided. The problem that structures such as a plurality of bolts needing to be screwed cannot be screwed or loosened at the same time is solved, and the screwing equipment has high screwing efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical assembly, in particular to a tightening device. Background Art

[0002] In the prior art, when tightening structures such as bolts, multiple tightening assemblies are used to tighten the bolts and wait for the tightening structure, and the distance between the multiple tightening assemblies is variable, so that the multiple tightening assemblies can be used for tightening a variety of structures to be tightened. However, on the one hand, this is easy to cause the tightening assemblies to collide and be damaged due to the small distance between the tightening assemblies, and on the other hand, it is easy to cause the tightening assemblies to be unable to tighten multiple structures to be tightened on the same object to be tightened at the same time due to the large distance between the tightening assemblies, thereby reducing the efficiency of tightening the bolts and waiting for the tightening structure.

[0003] Therefore, how to improve the tightening efficiency of bolts and other structures while avoiding damage to the tightening components has become a technical problem that technical personnel in this field need to solve urgently. Summary of the invention

[0004] The object of the present invention is to provide a tightening device to solve the problems existing in the above-mentioned prior art, and to avoid damage to the tightening components while improving the tightening efficiency of structures such as bolts.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a tightening device, the tightening device comprises a tightening assembly, the tightening assembly comprises a driving component and a sensor group;

[0007] The first output end of the driving assembly is connected to a first tightening assembly, the second output end of the driving assembly is connected to a second tightening assembly, and the distance between the first tightening assembly and the second tightening assembly is within a preset value range;

[0008] The sensor group is used to measure the distance between the first tightening assembly and the second tightening assembly;

[0009] The driving assembly applies a first force to the first tightening assembly, and the first force can drive the first tightening assembly to move toward and away from the second tightening assembly; the driving assembly applies a second force to the second tightening assembly, and the second force can drive the second tightening assembly to move toward and away from the first tightening assembly;

[0010] When the distance between the first tightening assembly and the second tightening assembly is within a preset value range, the first tightening assembly and the second tightening assembly do not collide, and the first tightening assembly and the second tightening assembly can simultaneously tighten multiple structures to be tightened on the same object to be tightened.

[0011] Preferably, the driving assembly comprises a first driving member, the output end of the first driving member is connected to a lead screw, the lead screw comprises a first thread segment and a second thread segment connected to each other, the thread rotation direction of the first thread segment is opposite to the thread rotation direction of the second thread segment, the first thread segment is provided with the first tightening assembly, and the second thread segment is provided with the second tightening assembly;

[0012] The tightening assembly further includes a first limiting component, and the first limiting component is used to limit the rotation of the first tightening component and the second tightening component.

[0013] Preferably, the driving assembly includes a second driving member, a first output end of the second driving member is connected to a first screw, a second output end of the second driving member is connected to a second screw, a thread rotation direction of the first screw is opposite to a thread rotation direction of the second screw, the first screw is provided with the first tightening assembly, and the second screw is provided with the second tightening assembly;

[0014] The tightening assembly further includes a second limiting assembly, and the second limiting assembly is used to limit the rotation of the first tightening assembly and the second tightening assembly.

[0015] Preferably, the tightening assembly includes an anti-collision member, and the anti-collision member is located between the first tightening component and the second tightening component.

[0016] Preferably, the tightening assembly comprises a first track, and the first tightening assembly is movably disposed in the first track;

[0017] Wherein, the first acting force can drive the first tightening assembly to move along the first track, so that the first tightening assembly moves toward and away from the second tightening assembly;

[0018] A plurality of blocking members are disposed on both sides of the first track, and a working area for the first tightening assembly to tighten the structure to be tightened is disposed between adjacent blocking members, and the working area is communicated with the first track.

[0019] Preferably, the driving assembly comprises a third driving member and a fourth driving member, the output end of the third driving member is connected to the first tightening assembly, and the output end of the fourth driving member is connected to the second tightening assembly;

[0020] The third driving member can drive the first tightening assembly to move in a direction away from or close to the second tightening assembly, and the fourth driving member can drive the second tightening assembly to move in a direction away from or close to the first tightening assembly.

[0021] Preferably, the sensor group includes a first sensor unit and a second sensor unit; the first sensor unit includes a first sensor and a second sensor respectively located at a stroke start point and a stroke end point of the first tightening assembly; the second sensor unit includes a third sensor and a fourth sensor respectively located at a stroke start point and a stroke end point of the second tightening assembly;

[0022] The distance between the end point of the stroke of the first tightening assembly and the end point of the stroke of the second tightening assembly is the maximum value in the preset value range, and the distance between the starting point of the stroke of the first tightening assembly and the starting point of the second tightening assembly is the minimum value in the preset value range.

[0023] Preferably, when the distance between the first tightening assembly and the second tightening assembly is within the preset value range, the structures to be tightened of the first tightening assembly and the second tightening assembly are located on a diagonal line on the same object to be tightened.

[0024] Preferably, the first tightening assembly and the second tightening assembly both include a driving device and a tightening bit connected to an output end of the driving device, and the driving device is used to drive the tightening bit to rotate.

[0025] Preferably, a buffer is provided between the driving device and the tightening bit; the first tightening assembly and the second tightening assembly both include a heat sink for dissipating heat for the driving device; and a torque sensor for detecting the torque of the structure to be tightened is provided at the output end of the driving device.

[0026] Preferably, the buffer comprises a first telescopic shaft and a second telescopic shaft arranged between the driving device and the tightening bit, the first telescopic shaft and the second telescopic shaft slidingly cooperate along the axial direction of the first telescopic shaft, an end of the first telescopic shaft away from the second telescopic shaft is connected to the output end of the driving device, and an end of the second telescopic shaft away from the first telescopic shaft is connected to the tightening bit.

[0027] Preferably, the tightening assembly includes a lifting drive component, and the lifting drive component is used to drive the first tightening assembly and / or the second tightening assembly to lift and lower.

[0028] Compared with the prior art, the present invention has achieved the following technical effects:

[0029] The present invention uses a first tightening component and a second tightening component to simultaneously tighten or loosen a plurality of bolt waiting to be tightened structures of the same object to be tightened (the object to be tightened refers to an object with multiple structures to be tightened, such as a reducer body), thereby improving the tightening or loosening efficiency; a sensor group measures and feeds back the moving positions of the first tightening component and the second tightening component, and a computer or an operator calculates the spacing between the first tightening component and the second tightening component based on the feedback data of the sensor group, thereby eliminating the time spent on manually measuring the spacing between the first tightening component and the second tightening component, so that the spacing between the first tightening component and the second tightening component is within a certain range. When the preset value range is about to be exceeded, the driving component can adjust the positions of the first tightening component and the second tightening component in time, so that the spacing between the first tightening component and the second tightening component is always within the preset range. This not only avoids the problem that the first tightening component and the second tightening component are damaged due to collision due to too small a spacing, but also avoids the problem that the first tightening component and the second tightening component cannot simultaneously tighten several bolts waiting to be tightened structures of the same object to be tightened due to too large a spacing between the first tightening component and the second tightening component, thereby ensuring that the tightening equipment has a high tightening efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 It is a structural schematic diagram of the tightening assembly;

[0032] Figure 2 A schematic diagram of the structure in which the front guard plate is omitted for tightening the assembly;

[0033] Figure 3 It is the rear view of the tightening assembly;

[0034] Figure 4 It is a structural schematic diagram of the first track and the working area;

[0035] Among them, 1. upper load-bearing plate; 2. front guard plate; 3. rear guard plate; 4. touch display screen; 5. tightening bit; 6. telescopic shaft; 7. bottom plate; 8. tightening shaft; 9. heat sink; 10. bearing; 11. second sensor; 12. sensor bracket; 13. screw tail bracket; 14. connecting plate; 15. second screw; 16. reducer; 17. second drive member; 18. screw holder; 19. load bottom plate; 20. slider; 21. guide rail; 22. screw linkage plate; 23. screw tail stock; 24. load-bearing column; 25. operating handle; 26. button; 27. working area; 28. barrier; 29. ​​first track. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] like Figure 1 to Figure 3 As shown, the present invention discloses a tightening device, which includes a tightening assembly, and the tightening assembly includes a driving component and a sensor group; the first output end of the driving component is connected to the first tightening component, and the second output end of the driving component is connected to the second tightening component, and the spacing between the first tightening component and the second tightening component is within a preset value range; the sensor group is used to measure the spacing between the first tightening component and the second tightening component; wherein the driving component applies a first force to the first tightening component, and the first force can drive the first tightening component to move in a direction close to and away from the second tightening component, and the driving component applies a second force to the second tightening component, and the second force can drive the second tightening component to move in a direction close to and away from the first tightening component; when the spacing between the first tightening component and the second tightening component is within the preset value range, the first tightening component and the second tightening component do not collide, and the first tightening component and the second tightening component can simultaneously tighten multiple structures to be tightened on the same object to be tightened.

[0039] The present invention tightens or loosens several bolt waiting structures of the same object to be tightened by the first tightening component and the second tightening component at the same time, thereby improving the tightening or loosening efficiency; the moving positions of the first tightening component and the second tightening component are measured and fed back by the sensor group, and the spacing between the first tightening component and the second tightening component is calculated by the computer or the operator according to the feedback data of the sensor group, which saves the time consumed by manually measuring the spacing between the first tightening component and the second tightening component, so that when the spacing between the first tightening component and the second tightening component is about to exceed the preset value range, the driving component can adjust the position of the first tightening component and the second tightening component in time, so that the spacing between the first tightening component and the second tightening component is always within the preset range, which not only avoids the problem that the first tightening component and the second tightening component are damaged due to the collision between the first tightening component and the second tightening component due to the small spacing, but also avoids the problem that the first tightening component and the second tightening component cannot simultaneously tighten several bolt waiting structures of the same object to be tightened due to the large spacing between the first tightening component and the second tightening component, thereby ensuring that the tightening equipment has a high tightening efficiency.

[0040] The object to be tightened refers to an object with multiple structures to be tightened, such as a reducer body. The structure to be tightened refers to a structure such as a bolt or a sleeve that needs to be tightened or loosened. Although the first tightening assembly and the second tightening assembly in the present invention are called "tightening assemblies", the first tightening assembly and the second tightening assembly can also be used to loosen the structure to be tightened, for example, to loosen the bolts tightened on the reducer body.

[0041] The tightening device has at least one tightening assembly, and the specific number of the tightening assemblies is adaptively adjusted according to the working conditions. When there are two or more tightening assemblies, the distribution of the multiple tightening assemblies, specifically the distribution of the multiple first tightening components and the distribution of the multiple second tightening components, depends on the working conditions and can be in a square, annular or quasi-annular shape. The tightening assembly includes at least one first tightening assembly and at least one second tightening assembly, and the first tightening assembly and the second tightening assembly each include at least one tightening bit 5; the distribution of the multiple tightening bits 5 also depends on the working conditions. However, it should be noted that, under the premise that the tightening equipment can meet the condition of "being able to tighten different structures to be tightened of the same object to be tightened, avoiding the problem of the first tightening component and the second tightening component colliding and being damaged due to the small spacing between the first tightening component and the second tightening component, and also avoiding the problem that the first tightening component and the second tightening component cannot simultaneously tighten several bolt waiting to be tightened structures of the same object to be tightened due to the large spacing between the first tightening component and the second tightening component", the distribution of the tightening assembly and the distribution of the tightening bit 5 can be adjusted as much as possible according to the working conditions.

[0042] Furthermore, the present invention can also omit the sensor group, and the operator manually measures and calculates the spacing between the first tightening component and the second tightening component, which reduces the manufacturing cost of the tightening device, but reduces the tightening efficiency of the tightening device. This situation can be selectively applied when the cost budget is low. In addition, the present invention can connect the drive component and the sensor group to the controller signal, receive the feedback data of the sensor group through the controller, and control the drive component to adjust the position of the first tightening component and the second tightening component to ensure that the first tightening component and the second tightening component are within the preset value range. Obviously, compared with the manual control of the drive component, the response rate of the drive component is faster, which saves the response time of the drive component and further improves the tightening efficiency of the tightening device. The controller can be a single-chip microcomputer or PLC, etc., which can receive feedback from the sensor group and control the drive component to adjust the position of the first tightening component and the second tightening component.

[0043] The drive assembly in the present invention has a variety of settings. For example, the first form of the drive assembly: the drive assembly includes a first drive member, the output end of the first drive member is connected to a lead screw, the lead screw includes a first thread segment and a second thread segment connected, the thread rotation direction of the first thread segment is opposite to the thread rotation direction of the second thread segment, the first thread segment is provided with a first tightening assembly, and the second thread segment is provided with a second tightening assembly; the tightening assembly also includes a first limit assembly, the first limit assembly is used to limit the rotation of the first tightening assembly and the second tightening assembly. The first tightening assembly is threadedly connected to the first thread segment, and the second tightening assembly is threadedly connected to the second thread segment.

[0044] At this time, the output end of the first driving member is equivalent to both the first output end of the driving assembly and the second output end of the driving assembly. The first driving member can be a rotary motor or other driving device that can drive the lead screw to rotate. When the spacing between the first tightening assembly and the second tightening assembly needs to be adjusted, the first driving member is started, and the first driving member drives the first thread segment and the second thread segment of the lead screw to rotate. However, under the restriction of the first limit assembly, the first thread segment and the second thread segment cannot rotate, so the first tightening assembly and the second tightening assembly can only move along the first thread segment and the second thread segment respectively, and because the thread rotation directions of the first thread segment and the second thread segment are similar, when the first driving member is started, the first tightening assembly and the second tightening assembly can move toward and away from each other, thereby realizing the adjustment of the spacing between the first tightening assembly and the second tightening assembly to adapt to the tightening of different structures to be tightened.

[0045] The second form of the driving assembly: the driving assembly includes a second driving member 17, the first output end of the second driving member 17 is connected to the first lead screw, the second output end of the second driving member 17 is connected to the second lead screw 15, the thread rotation direction of the first lead screw is opposite to the thread rotation direction of the second lead screw 15, the first lead screw is provided with a first tightening assembly, and the second lead screw 15 is provided with a second tightening assembly; the tightening assembly also includes a second limit assembly, and the second limit assembly is used to limit the rotation of the first tightening assembly and the second tightening assembly. The first tightening assembly is threadedly connected to the first lead screw, and the second tightening assembly is threadedly connected to the second lead screw 15.

[0046] The first output end of the second driving member 17 is equivalent to the first output end of the driving assembly, and the second output end of the second driving member 17 is equivalent to the second output end of the driving assembly. The second driving member 17 can be a driving device such as a rotating motor that can drive the first screw and the second screw 15 to rotate. When the spacing between the first tightening assembly and the second tightening assembly needs to be adjusted, the second driving member 17 is started, and the second driving member 17 drives the first screw and the second screw 15 to rotate. Since the threads of the first screw and the second screw 15 have opposite rotation directions, the first screw and the second screw 15 rotate synchronously in the opposite direction, thereby driving the first tightening assembly and the second tightening assembly to rotate synchronously in the opposite direction. However, since the second limit assembly limits the rotation of the first screw and the second screw 15, the first tightening assembly and the second tightening assembly will move along the axial direction of the first screw and the second screw 15 respectively, and move synchronously in the opposite direction, that is, move toward each other and move away from each other.

[0047] Furthermore, when the driving assembly is of the first form or the second form, since the thread rotation directions of the first thread segment and the second thread segment are opposite, the thread rotation directions of the first lead screw and the second lead screw 15 are opposite. This causes the first reaction force from the structure to be tightened that the first tightening assembly receives when tightening the bolt waiting to be tightened structure, and the second reaction force from the structure to be tightened that the second tightening assembly receives when tightening the bolt waiting to be tightened structure will be dispersed to the first lead screw and the second lead screw 15, or to the first thread segment and the second thread segment. The first reaction force and the second reaction force are offset by the first lead screw and the second lead screw 15 with opposite thread rotation directions, or the opposite movements of the first thread segment and the second thread segment, thereby avoiding the problem that the tightening equipment shakes and jumps under the reaction force of the structure to be tightened, resulting in the tightening bit 5 being unable to fit the bolt waiting to be tightened structure, thereby reducing the tightening efficiency.

[0048] The third form of the drive assembly: the drive assembly includes a third drive member and a fourth drive member, the output end of the third drive member is connected to the first tightening assembly, and the output end of the fourth drive member is connected to the second tightening assembly; the third drive member can drive the first tightening assembly to move away from and toward the second tightening assembly, and the fourth drive member can drive the second tightening assembly to move away from and toward the first tightening assembly. In this case, the output end of the third drive member is equivalent to the first output end of the drive assembly, and the output end of the fourth drive member is equivalent to the second output end of the drive assembly.

[0049] When the output ends of the third driving member and the fourth driving member are not connected to the lead screw structure, the third driving member and the fourth driving member can be a linear driving device such as a cylinder, an electric push rod or a hydraulic cylinder that can drive the first tightening assembly or the second tightening assembly to move linearly. When the spacing between the first tightening assembly and the second tightening assembly needs to be adjusted, the third driving member and / or the fourth driving member can be started.

[0050] When the output ends of the third driving member and the fourth driving member are both connected to the lead screw. The driving assembly includes the third driving member and the fourth driving member, the output end of the third driving member is connected to the third lead screw, the output end of the fourth driving member is connected to the fourth lead screw, the thread rotation direction of the third lead screw is opposite to the thread rotation direction of the fourth lead screw, the third lead screw is provided with a first tightening assembly, and the fourth lead screw is provided with a second tightening assembly; the tightening assembly also includes a third limit assembly, and the third limit assembly is used to limit the rotation of the first tightening assembly and the second tightening assembly. The first tightening assembly is threadedly connected to the third lead screw, and the second tightening assembly is threadedly connected to the fourth lead screw.

[0051] At this time, the output end of the third driving member is equivalent to the first output end of the driving assembly, and the output end of the fourth driving member is equivalent to the second output end of the driving assembly. The third driving member and the fourth driving member can be specifically a rotating driving device such as a rotating motor that can drive the first tightening assembly or the second tightening assembly to rotate. When the spacing between the first tightening assembly and the second tightening assembly needs to be adjusted, the third driving member and / or the fourth driving member can be started. And because the third limiting assembly limits the rotation of the first tightening assembly and the second tightening assembly, the first tightening assembly and the second tightening assembly will not rotate, the first tightening assembly will move along the axial direction of the third screw, and the second tightening assembly will move along the axial direction of the fourth screw.

[0052] "And / or" means that the text content before and after "and / or" can exist at the same time or only one of them can exist. For example, "A and / or B" includes three situations: ① only A exists; ② only B exists; ③ both A and B exist.

[0053] like Figure 2As shown in the figure, the structure is equivalent to the second form of the driving assembly in the present invention. At this time, the second limit assembly includes a guide rail 21 and a slider 20. Through the cooperation of the guide rail 21 and the slider 20, the first tightening assembly and the second tightening assembly will not rotate, but will move synchronously in opposite directions along the axial direction of the first screw and the second screw 15 respectively.

[0054] The tightening assembly on the left is regarded as the first tightening assembly, and the tightening assembly on the right is regarded as the second tightening assembly. Since the connection and position relationship between the first tightening assembly and the second tightening assembly and the slider 20 and the guide rail 21 are the same, the second tightening assembly is used as an example: at this time, the upper load-bearing plate 4, the front guard plate 2, the rear guard plate 3, the load bottom plate 19 and the four load-bearing columns 24 form a shell frame of the tightening assembly, and the shell frame also includes the bottom plate 7. The shell frame in the figure is square, but the shell frame is not limited to a square shape, and the shape of the shell frame can be adaptively adjusted according to the working conditions. A second driving member 17 is provided in the housing frame, and the second driving member 17 is connected to a reducer 16 fixed on a load base plate 19. The two output ends of the reducer 16 are respectively connected to a first lead screw and a second lead screw 15. The first lead screw and the second lead screw 15 are sequentially connected to a lead screw holder 18 and a lead screw tail frame 13 in a direction away from the reducer 16. The lead screw holder 18 and the lead screw tail frame 13 are both fixed on the load base plate 19, and the lead screw holder 18 and the lead screw tail frame 13 are used to support the second lead screw 15. A bearing 10 is provided between the lead screw tail frame 13 and the second lead screw 15.

[0055] In addition, a connecting plate 14 is provided under the load base plate 19, and the connecting plate 14 is interference fit with the tightening shaft 8 of the second tightening assembly. The connecting plate 14 is provided with a slider 20 in the direction of the load base plate 19, and the slider 20 is slidably matched with the guide rail 21 located on the load base plate 19. The load base plates 19 corresponding to the second lead screw 15 below are provided with guide rails 21, and the connecting plate 14 is also provided with a lead screw linkage plate 22, one end of which is connected to the connecting plate 14, and the other end of which is sleeved on the second lead screw 15 through the lead screw tail seat 23. The lead screw retaining seat 18, the lead screw linkage plate 22 and the second lead screw 15 are all threadedly connected. In this way, when the second driving member 17 is started, the second driving member 17 drives the second screw 15 to rotate through the reducer 16, and the second screw 15 attempts to drive the second tightening assembly to rotate through the screw linkage plate 22 and the connecting plate 14, but due to the limitations of the slider 20 and the guide rail 21, the second tightening assembly can only move along the axial direction of the second screw 15.

[0056] The first screw, screw linkage plate 22, connecting plate 14, guide rail 21, slider 20, screw retaining seat 18, screw tail frame 13, screw tail seat 23 and other structures on one side of the first tightening assembly correspond to the arrangement method of the second tightening assembly side. Specifically, it can be understood that the above-mentioned structure of the first tightening assembly is symmetrically arranged with the above-mentioned structure of the second tightening assembly, so the arrangement method of the above-mentioned structure on the first tightening assembly side is not repeated here.

[0057] Similarly, the first limit assembly and the third limit assembly can also adopt the form of the above-mentioned guide rail 21+slider 20, but the first limit assembly, the second limit assembly and the third limit assembly are not limited to the above-mentioned structure, and can also be other structures that can limit the rotation of the first tightening assembly and the second tightening assembly.

[0058] The sensor group in the present invention includes a first sensor unit and a second sensor unit; the first sensor unit includes a first sensor and a second sensor 11 respectively located at the starting point and the end point of the stroke of the first tightening assembly; the second sensor unit includes a third sensor and a fourth sensor respectively located at the starting point and the end point of the stroke of the second tightening assembly; the distance between the end point of the stroke of the first tightening assembly and the end point of the stroke of the second tightening assembly is the maximum value in the preset value range, and the distance between the starting point of the stroke of the first tightening assembly and the starting point of the second tightening assembly is the minimum value in the preset value range. Among them, the starting point of the stroke of the first tightening assembly and the second tightening assembly is not the position where the first tightening assembly and the second tightening assembly start to move, but refers to the position where the first tightening assembly and the second tightening assembly are closest, that is, the smallest distance. Correspondingly, the end point of the stroke of the first tightening assembly and the second tightening assembly is not the position where the first tightening assembly and the second tightening assembly stop moving, but refers to the position where the distance between the first tightening assembly and the second tightening assembly is the largest.

[0059] The positions of the first tightening assembly and the second tightening assembly are detected respectively by the first sensor to the fourth sensor, so that the distance between the first tightening assembly and the second tightening assembly is always maintained within the preset value range, effectively avoiding the problem of the first tightening assembly and the second tightening assembly being too close to each other and being damaged by collision, and avoiding the problem of the first tightening assembly and the second tightening assembly being too far away from each other and being unable to tighten multiple structures to be tightened on the same object to be tightened at the same time.

[0060] When the guide rail 21 is provided, the first sensor and the second sensor 11 are respectively located at the two ends of the guide rail 21 on one side of the first tightening assembly, and the third sensor and the fourth sensor are respectively located at the two ends of the guide rail 21 on one side of the second tightening assembly. And the first sensor to the fourth sensor can be fixed on the load base plate 19 through the sensor bracket 12.

[0061] Furthermore, when the distance between the first tightening assembly and the second tightening assembly is within the preset value range, the structures to be tightened of the first tightening assembly and the second tightening assembly are located on the diagonal line of the same object to be tightened. By further limiting the preset value range, the distance between the first tightening assembly and the second tightening assembly is sufficient to allow the two to tighten the two structures to be tightened on the same object to be tightened at the same time; for example, when the flange needs to be fixed to the reducer body, the two bolts located on the diagonal line are tightened or loosened at the same time. This can prevent the problem of only tightening one bolt, causing the flange to be lifted or offset, and unable to be accurately assembled on the reducer body.

[0062] like Figure 2 As shown, both the first tightening assembly and the second tightening assembly include a driving device and a tightening bit 5 connected to the output end of the driving device, and the driving device is used to drive the tightening bit 5 to rotate. The driving device can be a driving device such as a rotary motor that can drive the tightening bit 5 to rotate. The tightening bit 5 can be understood as a screwdriver head installed on the output end of the driving device. The tightening bit 5 can be divided into a flat head, a cross head, a Pozidriv head, a star head, a square head, a hexagonal head, a Y-shaped head, etc. according to different head shapes.

[0063] like Figure 2 As shown, the first tightening assembly and the second tightening assembly are essentially a tightening shaft 8 integrating a driving device, a buffer and a tightening bit 5. When the driving device is a rotary motor, the tightening shaft 8 is an electric tightening shaft. Specifically, in the present invention, a buffer is provided between the driving device and the tightening bit 5; the buffer can buffer the jumping and vibration of the tightening shaft 8 during use. Specifically, the buffer includes a telescopic shaft 6 provided between the driving device and the tightening bit 5, and the telescopic shaft 6 includes a first telescopic shaft and a second telescopic shaft. The first telescopic shaft and the second telescopic shaft are slidably matched along the axial direction of the first telescopic shaft, and the end of the first telescopic shaft away from the second telescopic shaft is connected to the output end of the driving device, and the end of the second telescopic shaft away from the first telescopic shaft is connected to the tightening bit 5; at this time, the setting of the telescopic shaft 6 makes the tightening shaft 8 It can adapt to the following situations: ① The height of the bolts screwed into the part holes is inconsistent, and the telescopic shaft 6 can make the tightening shaft 8 adapt to this situation well; ② The setting of the telescopic shaft 6 is convenient for the tightening bit 5 to be completely pressed and fitted with the hexagonal bottom of the bolt, which can avoid falling off during high-torque tightening; ③ The angular direction of the hexagonal inside of each bolt is inconsistent, and the angular direction of the tightening bit 5 relative to the hexagonal inside of the bolt is also inconsistent. The telescopic shaft 6 is set to facilitate the rotation of the tightening shaft 8. When the angular direction of the hexagonal bit of the tightening shaft 8 is consistent with the angular direction of the hexagonal inside of the bolt, the tightening bit 5 can rely on the elasticity of the tightening shaft 8 to fully mesh with the hexagonal inside of the bolt.

[0064] The first tightening assembly and the second tightening assembly both include a heat sink 9 for dissipating heat for the drive device. When the drive device, i.e., the tightening shaft 8, is running at high frequency and high load, the risk of high temperature alarm shutdown is relatively high. The heat sink 9 can dissipate the heat of the drive device in time to prevent the drive device from shutting down due to high temperature alarm. The heat sink 9 can be specifically an air-cooled heat sink or a water-cooled heat sink. The heat sink 9 is a conventional means, and the specific structure of the heat sink 9 is not repeated here.

[0065] At the same time, the present invention also provides a torque sensor on the tightening shaft 8, through which the tightening torque required by the structure to be tightened, such as a bolt, can be fed back. When the bolt is tightened, when the torque sensor detects that the bolt has reached the tightening torque, the tightening shaft 8 no longer outputs torque. The provision of the torque sensor enables the first tightening assembly and the second tightening assembly to complete the tightening of structures to be tightened that require different tightening torques.

[0066] In addition, the tightening assembly in the present invention includes a lifting drive component, which is used to drive the first tightening component and / or the second tightening component to lift. When the lifting drive component synchronously drives the first tightening component and the second tightening component to lift, the lifting drive component can be arranged above the upper bearing plate 1, and the output end of the lifting drive component is connected to the upper bearing plate 1. The lifting drive component drives the shell frame to lift, thereby realizing the lifting and lowering of the tightening screwdriver bits 5 in the first tightening component and the second tightening component, so as to adapt to different working conditions and tighten the structures to be tightened under different circumstances.

[0067] When the lifting drive assembly can respectively drive the first tightening assembly and the second tightening assembly to lift and lower, the lifting drive assembly includes the first lifting drive assembly and the second lifting drive assembly. The first lifting drive assembly is arranged on one side of the first tightening assembly, and the second lifting drive assembly is arranged on one side of the second tightening assembly. Taking the setting method of the first lifting drive assembly as an example, at this time, the first lifting drive assembly is arranged on the connecting plate 14, and the output end of the first lifting drive assembly is connected to the first tightening assembly. At this time, the first tightening assembly can move in the opposite direction synchronously with the second tightening assembly under the action of the second driving member 17 or the third driving member, and can also be driven by the first lifting drive assembly to perform lifting and lowering motion relative to the second tightening assembly; the setting method of the second lifting drive assembly can be set accordingly according to the setting method of the first lifting drive assembly, which will not be repeated here, and it is sufficient to make the second tightening assembly lift and lower equivalent to the first tightening assembly.

[0068] The lifting drive assembly, the first lifting drive assembly and the second lifting drive assembly can be specifically a driving device such as a cylinder, a hydraulic cylinder, or an electric push rod that can drive the shell frame to move linearly.

[0069] When the lifting drive assembly is connected to the upper bearing plate 1, the tightening assembly also includes a control handle 25, and a control handle 25 is provided on each side of the housing frame. The lifting drive assembly can be adjusted and controlled by the control handle 25, thereby controlling the lifting and lowering of the housing frame, and the tightening assembly can be stably lifted and lowered by the operator holding it with both hands. A touch display screen 4 is provided on the front guard plate 2, and the target torque and indexing diameter value of the structure to be tightened can be set by the touch display screen 4. The touch display screen 4 is provided with buttons 26 for start, reset, emergency stop and other functions.

[0070] Furthermore, the tightening assembly in the present invention also includes a driving device capable of driving multiple tightening shafts to rotate circumferentially, the driving device includes a support frame, a plurality of rotating arms are provided along the circumference of the support frame, a tightening shaft is provided at one end of the rotating arm away from the support frame, and the driving device also includes a rotating driving device capable of driving the support frame to rotate, such as a rotating motor. Thus, for example, when two rotating arms are provided circumferentially on the support frame, and the tightening assembly in the present invention needs to tighten multiple structures to be tightened that are distributed in a circular ring shape (such as multiple bolts distributed circumferentially along a circular flange), after the tightening shaft completes tightening of two structures to be tightened on a diagonal line, the rotating driving device is started to drive the support frame and the rotating arms to rotate, and the tightening shaft is turned to the next structure to be tightened, so that the two tightening shafts tighten the two structures to be tightened located on the next diagonal line.

[0071] In addition, the tightening assembly of the present invention includes an anti-collision member, which is located between the first tightening component and the second tightening component. It should be noted that the anti-collision member is arranged to avoid other structures, that is, the arrangement of the anti-collision member must not affect the realization of the functions of other structures. And the volume of the anti-collision member is large enough to completely isolate the collision between the first tightening component and the second tightening component. The anti-collision member is equivalent to a "barrier" between the first tightening component and the second tightening component. Even if the spacing between the first tightening assembly and the second tightening component is lower than the minimum value of the preset value range, due to the existence of the anti-collision member, the anti-collision member will avoid the collision between the first tightening component and the second tightening component, avoiding the problem of damage to the first tightening component and the second tightening component due to the collision; at the same time, the anti-collision member in the present invention can also be set to be elastic, such as an elastic pad, so that the damage caused by the collision between the first tightening component, the second tightening component and the anti-collision member is greatly reduced.

[0072] The anti-collision member may specifically include a rigid support member, a plurality of energy dissipation modules arranged at intervals along the circumference of the rigid support member, adjacent energy dissipation modules are connected together by connecting members such as chains or elastic ropes, and the energy dissipation modules are filled with energy dissipation materials. The rigid support member may specifically be a structure made of metal or other materials with sufficient hardness, and the rigid support member plays a supporting role, so that the anti-collision member has sufficient rigidity and will not be broken by the first tightening assembly or the second tightening assembly.

[0073] The energy dissipation module can be made of materials such as glass fiber, carbon fiber, aramid fiber or mixed fiber, or other materials with buffering and energy dissipation functions. The shape of the energy dissipation module is not limited, and it can be cylindrical, strip, block, etc. Multiple energy dissipation modules can also adopt different shapes, so that the anti-collision part can achieve the function of "isolating the collision between the first tightening component and the second tightening component".

[0074] The gap between adjacent energy dissipation modules allows the anti-collision member to have a certain deformation buffer space when it is hit by the first tightening assembly and / or the second tightening assembly, thereby reducing damage to the anti-collision member, making the anti-collision member have a longer service life, and can continuously avoid collisions between the first tightening assembly and the second tightening assembly. The connectors between adjacent energy dissipation modules improve the integrity of each energy dissipation module. When only some energy dissipation modules are hit, the impact force can be dispersed to more energy dissipation modules through the connectors, further improving the energy dissipation buffering capacity of the anti-collision member.

[0075] Furthermore, a buffer column such as a vertical rubber that intersects with the energy dissipation module can be set up, and the buffer column is filled with rubber or other materials that can buffer and dissipate energy. By setting up the buffer column, the strength, stability and buffering capacity of the anti-collision component are further improved.

[0076] Among them, the setting of the anti-collision part limits the movement space of the first tightening component and the second tightening component to a certain extent, which may make the tightening equipment unable to be used for the tightening of some objects to be tightened after the anti-collision part is set, such as the situation where the distance between the two structures to be tightened is small; to alleviate this problem, the present invention can set the guide rail 21 along the outer contour of the anti-collision part. At this time, the shape of the guide rail 21 is not necessarily linear, thereby increasing the movement range of the first tightening component and the second tightening component, so that the first tightening component and the second tightening component can be moved as close to the anti-collision part as possible, so that the tightening equipment can be more applicable to various working conditions, such as the situation where the distance between the two structures to be tightened is small.

[0077] like Figure 4 As shown, the tightening assembly includes a first track 29, and the first tightening component is movably arranged in the first track 29; wherein, the first force can drive the first tightening component to move along the first track 29, so that the first tightening component moves toward and away from the second tightening component; a plurality of blocking members 28 are provided on both sides of the first track 29, and the blocking members 28 located on both sides of the first track 29 are staggered, and a working area 27 for the first tightening component to tighten the structure to be tightened is provided between adjacent blocking members 28, and the working area 27 is connected to the first track 29. The blocking member 28 can specifically be a structure such as a blocking plate. It should be noted that, Figure 4The shapes and distributions of the middle working area 27, the blocking member 28 and the first track 29 are only schematic diagrams, and the specific settings depend on the specific working conditions. The two processes of the first tightening assembly entering the first track 29 from the working area 27 and entering the working area 27 from the first track 29 can be achieved by the operator driving the first tightening assembly, or by setting an additional driving device to drive the first tightening assembly. It should be noted that the setting of the additional driving device does not affect the realization of other structural functions of the tightening device.

[0078] The first tightening component can slide along the first track 29 through a slider seat slidably connected to the first track 29, or a roller is provided outside the tightening shaft to roll along the first track 29, or there can be other matching relationships between the first tightening component and the first track 29. However, no matter what kind of matching relationship the first tightening component and the first track 29 have, the first tightening component must be allowed to move along the first track 29 to achieve the function of moving toward and away from the second tightening component.

[0079] The blocking member 28 plays a blocking role, making it difficult for the first tightening component to move toward and away from the second tightening component, reducing the probability of the first tightening component and the second tightening component colliding and being damaged, and at the same time avoiding as much as possible the problem that the first tightening component and the second tightening component are unable to tighten multiple structures to be tightened on the same object to be tightened at the same time due to an accidental large distance between them; and the blocking members 28 located on both sides of the first track 29 are staggered, which makes it difficult for the first tightening component to collide with the blocking member 28 on the other side when entering the first track 29 from the working area 27 on one side, reducing the wear of the blocking member 28 and the first tightening component.

[0080] Similarly, the tightening assembly also includes a second track, and the second tightening component is movably arranged in the second track; wherein the second force can drive the second tightening component to move along the second track, so that the second tightening component moves in the direction close to and away from the second tightening component; a plurality of blocking members are arranged on both sides of the second track, and the blocking members respectively located on both sides of the second track are staggered, and a working area for the second tightening component to tighten the structure to be tightened is arranged between adjacent blocking members, and the working area is connected to the second track. The working area, the second track and the blocking member arranged on one side of the second tightening component correspond to the working area, the first track and the blocking member arranged on one side of the first tightening component, and play the same role, which will not be repeated here.

[0081] There are multiple technical solutions in the present invention, but there is no situation where contrary technical inspiration is given.

[0082] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A tightening device, characterized in that: The tightening device includes a tightening assembly, and the tightening assembly includes a drive component and a sensor group; The first output end of the driving assembly is connected to a first tightening assembly, the second output end of the driving assembly is connected to a second tightening assembly, and the distance between the first tightening assembly and the second tightening assembly is within a preset value range; The sensor group is used to measure the distance between the first tightening assembly and the second tightening assembly; The driving assembly applies a first force to the first tightening assembly, and the first force can drive the first tightening assembly to move toward and away from the second tightening assembly; the driving assembly applies a second force to the second tightening assembly, and the second force can drive the second tightening assembly to move toward and away from the first tightening assembly; When the distance between the first tightening assembly and the second tightening assembly is within a preset value range, the first tightening assembly and the second tightening assembly do not collide, and the first tightening assembly and the second tightening assembly can simultaneously tighten multiple structures to be tightened on the same object to be tightened.

2. The tightening device according to claim 1, characterized in that: The driving assembly comprises a first driving member, an output end of the first driving member is connected to a lead screw, the lead screw comprises a first thread segment and a second thread segment connected to each other, the thread rotation direction of the first thread segment is opposite to the thread rotation direction of the second thread segment, the first thread segment is provided with the first tightening assembly, and the second thread segment is provided with the second tightening assembly; The tightening assembly further includes a first limiting component, and the first limiting component is used to limit the rotation of the first tightening component and the second tightening component.

3. The tightening device according to claim 1, characterized in that: The tightening assembly includes an anti-collision member, and the anti-collision member is located between the first tightening component and the second tightening component.

4. The tightening device according to claim 1, characterized in that: The tightening assembly comprises a first track, and the first tightening component is movably disposed in the first track; Wherein, the first acting force can drive the first tightening assembly to move along the first track, so that the first tightening assembly moves toward and away from the second tightening assembly; A plurality of blocking members are disposed on both sides of the first track, and a working area for the first tightening assembly to tighten the structure to be tightened is disposed between adjacent blocking members, and the working area is communicated with the first track.

5. The tightening device according to claim 1, characterized in that: The sensor group includes a first sensor unit and a second sensor unit; the first sensor unit includes a first sensor and a second sensor respectively located at a stroke start point and a stroke end point of the first tightening assembly; the second sensor unit includes a third sensor and a fourth sensor respectively located at a stroke start point and a stroke end point of the second tightening assembly; The distance between the end point of the stroke of the first tightening assembly and the end point of the stroke of the second tightening assembly is the maximum value in the preset value range, and the distance between the starting point of the stroke of the first tightening assembly and the starting point of the second tightening assembly is the minimum value in the preset value range.

6. The tightening device according to claim 1, characterized in that: When the distance between the first tightening assembly and the second tightening assembly is within the preset value range, the to-be-tightened structures of the first tightening assembly and the second tightening assembly are located on a diagonal line on the same to-be-tightened object.

7. The tightening device according to claim 1, characterized in that: The first tightening assembly and the second tightening assembly both include a driving device and a tightening bit connected to an output end of the driving device, and the driving device is used to drive the tightening bit to rotate.

8. The tightening device according to claim 7, characterized in that A buffer is provided between the driving device and the tightening bit; the first tightening assembly and the second tightening assembly both include a heat sink for dissipating heat for the driving device; a torque sensor for detecting the torque of the structure to be tightened is provided on the output end of the driving device.

9. The tightening device according to claim 8, characterized in that The buffer member includes a first telescopic shaft and a second telescopic shaft arranged between the driving device and the tightening bit, the first telescopic shaft and the second telescopic shaft slidingly cooperate along the axial direction of the first telescopic shaft, an end of the first telescopic shaft away from the second telescopic shaft is connected to the output end of the driving device, and an end of the second telescopic shaft away from the first telescopic shaft is connected to the tightening bit.

10. The tightening device according to claim 1, characterized in that The tightening assembly includes a lifting drive component, and the lifting drive component is used to drive the first tightening component and / or the second tightening component to lift and lower.

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