Telescopic mechanism adjustment system and engineering machine

Abstract

The present application belongs to the field of engineering machinery, and discloses a telescopic mechanism adjusting system and engineering machinery. The telescopic mechanism adjusting system comprises: a telescopic mechanism, comprising a first linear extension structure and a second linear extension structure connected in a telescopic manner; a first inclination sensor for measuring a first inclination between the first linear extension structure and a preset reference plane; a second inclination sensor for measuring a second inclination between the second linear extension structure and the preset reference plane; and a reverse deformation driving mechanism for driving the first linear extension structure and / or the second linear extension structure to generate a reverse deformation displacement, so as to keep the inclination difference between the first inclination and the second inclination within a preset allowable deviation range. The present application can adjust the straightness of the telescopic mechanism, eliminate the bending deformation caused by the load, and is beneficial to keeping the telescopic mechanism in good use performance and prolonging the service life, thereby improving the operation reliability and safety.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engineering machinery, in particular to a telescopic mechanism adjusting system and engineering machinery. BACKGROUND

[0002] The existing straight-arm aerial work platforms mostly adopt a synchronous telescopic mode, i.e. a telescopic cylinder is used to drive the arm frame to synchronously telescope, so that the working platform on the arm frame is moved to a target height position. When the arm frame is lengthened, the arm frame and the telescopic cylinder are simultaneously bent and deformed due to their respective loads. Since the telescopic cylinder must have a high straightness during operation, the deformation of the telescopic cylinder will seriously affect its service performance and service life, and will also cause problems such as arm frame shaking and abnormal noise, thereby affecting the operation safety. SUMMARY

[0003] In view of at least one of the above defects or deficiencies of the prior art, the present application provides a telescopic mechanism adjusting system and engineering machinery, which can adjust the straightness of the telescopic mechanism, eliminate the bending deformation caused by the load, help to maintain good service performance, prolong the service life, and improve the operation reliability and safety.

[0004] To achieve the above-mentioned purpose, the first aspect of the present application provides a telescopic mechanism adjusting system, which comprises:

[0005] a telescopic mechanism comprising a first linear extension structure and a second linear extension structure telescopically connected;

[0006] a first inclination sensor for measuring a first inclination angle between the first linear extension structure and a preset reference plane;

[0007] a second inclination sensor for measuring a second inclination angle between the second linear extension structure and the preset reference plane; and

[0008] a counter-deformation driving mechanism for driving the first linear extension structure and / or the second linear extension structure to generate a counter-deformation displacement, so as to keep the inclination angle difference between the first inclination angle and the second inclination angle within a preset allowable deviation range.

[0009] Optionally, the counter-deformation driving mechanism comprises a counter-deformation power device capable of forming a telescopic action, and the counter-deformation driving mechanism is arranged to be capable of driving the counter-deformation displacement by the telescopic action of the counter-deformation power device.

[0010] Optionally, the counter-deformation power device comprises a device base body and a movable rod movably inserted into the device base body, and the counter-deformation driving mechanism further comprises a counter-deformation support block arranged at one end of the movable rod which is not inserted into the device base body.

[0011] Optionally, the device base body and the telescopic mechanism are fixedly arranged with each other.

[0012] Optionally, the reverse deformation driving mechanism further comprises a guide support, and the reverse deformation support block is in sliding cooperation with the guide support.

[0013] Optionally, the guide support is fixedly connected with the telescopic mechanism.

[0014] Optionally, one end of the first linear extension structure, which is not connected with the second linear extension structure, is provided with the reverse deformation driving mechanism; and / or one end of the second linear extension structure, which is not connected with the first linear extension structure, is provided with the reverse deformation driving mechanism.

[0015] Optionally, one end of the first linear extension structure, which is not connected with the second linear extension structure, is provided with the first inclination angle sensor, and one end of the second linear extension structure, which is not connected with the first linear extension structure, is provided with the second inclination angle sensor.

[0016] Optionally, the telescopic mechanism adjusting system further comprises:

[0017] a controller, which is in communication with the first inclination angle sensor, the second inclination angle sensor and the reverse deformation driving mechanism respectively, and is configured to control the reverse deformation driving mechanism to act when the inclination angle difference exceeds the preset allowable deviation range, until the inclination angle difference does not exceed the preset allowable deviation range.

[0018] The second aspect of the present application provides an engineering machine, which comprises the telescopic mechanism adjusting system described above.

[0019] Optionally, the engineering machine comprises a telescopic arm frame and a telescopic oil cylinder for driving the telescopic arm frame to perform a telescopic action, the telescopic oil cylinder comprises the telescopic mechanism, the first linear extension structure is formed as a cylinder assembly of the telescopic oil cylinder, and the second linear extension structure is formed as a telescopic rod assembly of the telescopic oil cylinder.

[0020] By the technical scheme, the first linear extension structure and the second linear extension structure of the telescopic mechanism are telescopically connected, so that the overall length of the telescopic mechanism can be adjusted, and meanwhile, the first inclination and the second inclination between the first linear extension structure and the second linear extension structure and the preset reference plane can be obtained under the detection of the first inclination sensor and the second inclination sensor, and according to the inclination difference between the two inclinations and the deviation degree of the preset allowable deviation range, whether the telescopic mechanism is deformed as a whole can be judged, in addition, under the driving of the anti-deformation driving mechanism, the first linear extension structure and / or the second linear extension structure can be displaced on the amplitude plane to eliminate the bending deformation, so as to adjust the straightness of the telescopic mechanism, so that the telescopic mechanism can maintain good use performance, prolong the service life, and improve the operation safety. When the mechanism and the controller cooperate, the starting and stopping time of the anti-deformation driving mechanism can be automatically confirmed by using the inclination information detected by the first inclination sensor and the second inclination sensor, and automatic adjustment of the straightness of the telescopic mechanism can be realized.

[0021] Other features and advantages of the present application will be described in detail in the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, and are used together with the following detailed description to explain the present application, but do not constitute a limitation of the present application. In the drawings:

[0023] Figure 1 is a schematic view of a telescopic mechanism adjustment system according to an embodiment of the present application;

[0024] Figure 2 is a partial schematic view of the telescopic mechanism adjustment system of Figure 1 ;

[0025] Figure 3 is another partial schematic view of the telescopic mechanism adjustment system of Figure 1 ;

[0026] BRIEF DESCRIPTION OF DRAWINGS

[0027] 1 first linear extension structure 2 second linear extension structure

[0028] 3 first inclination sensor 4 second inclination sensor

[0029] 5 anti-deformation power device 6 anti-deformation support block

[0030] 7 guide support 11 cylinder assembly

[0031] 12 telescopic rod assembly 51 device base body

[0032] 52 movable rod Detailed Implementation

[0033] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.

[0034] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0035] In the embodiments of the present invention, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used to describe the relative positional relationships of the components in relation to the directions shown in the accompanying drawings or in relation to the vertical, perpendicular, or gravitational directions.

[0036] The present invention will now be described in detail with reference to the accompanying drawings and exemplary embodiments.

[0037] like Figures 1 to 3 As shown, the first exemplary embodiment of the present invention provides a telescopic mechanism adjustment system, which mainly includes a telescopic mechanism, a first tilt sensor 3, a second tilt sensor 4, and an anti-deformation drive mechanism.

[0038] The telescopic mechanism includes a first linear extension structure 1 and a second linear extension structure 2 that are telescopically connected. For example, the first linear extension structure 1 can be integrally inserted into the second linear extension structure 2, or the second linear extension structure 2 can be integrally inserted into the first linear extension structure 1. Thus, when the telescopic mechanism extends or shortens, the first and second linear extension structures move relatively away from or towards each other, thereby adjusting the overall length of the telescopic mechanism. It can be seen that when the telescopic mechanism bends or deforms, the inclination of the first linear extension structure 1 and / or the second linear extension structure 2 can be adjusted, thereby adjusting the overall straightness of the telescopic mechanism and eliminating bending deformation. Furthermore, the telescopic mechanism can be installed inside the boom, thereby driving the boom to extend and retract synchronously.

[0039] The first tilt sensor 3 can measure the first tilt angle between the first straight extension structure 1 and a preset reference plane. For example, the horizontal plane can be set as the preset reference plane, and the first tilt sensor 3 can measure the angle between the first straight extension structure 1 and the horizontal plane as the first tilt angle. Furthermore, the first tilt sensor 3 can be set to perform real-time measurement, thereby acquiring the first tilt angle data in real time.

[0040] The second tilt sensor 4 can measure the second tilt angle between the second straight extension structure 2 and a preset reference plane. For example, if the horizontal plane is set as the preset reference plane, the second tilt sensor 4 can measure the angle between the second straight extension structure 2 and the horizontal plane as the second tilt angle. Furthermore, the first tilt sensor 3 can be set to perform real-time measurement, thereby acquiring the first tilt angle data in real time.

[0041] Furthermore, driven by the anti-deformation drive mechanism, the first linear extension structure 1 and / or the second linear extension structure 2 can generate anti-deformation displacement. During the displacement process, the first tilt angle and / or the second tilt angle change, thereby ensuring that the tilt angle difference between the first tilt angle and the second tilt angle remains within a preset allowable deviation range. At this time, the straightness of the telescopic mechanism can be confirmed to meet the operational requirements. For example, when... Figure 1 When the telescopic mechanism shown undergoes bending deformation, the anti-deformation drive mechanism can directly drive the first linear extension structure 1 to perform anti-deformation displacement. During the displacement process, the second linear extension structure 2 can remain relatively stationary. At this time, the first tilt angle changes, while the second tilt angle remains unchanged, thereby adjusting the tilt angle difference between the first and second tilt angles to within a preset allowable deviation range. Of course, the anti-deformation drive mechanism can also directly drive the second linear extension structure 2 to perform anti-deformation displacement, or simultaneously drive the first linear extension structure 1 and the second linear extension structure 2 to perform anti-deformation displacement.

[0042] As can be seen from the above technical solution, the first and second linear extension structures of the telescopic mechanism are telescopically connected, thereby adjusting the overall length of the telescopic mechanism. Simultaneously, under the detection of the first and second tilt sensors, the first and second tilt angles between the first and second linear extension structures and a preset reference plane can be obtained. Based on the deviation of the tilt angle difference from the preset allowable deviation range, it can be determined whether the telescopic mechanism is deformed. Furthermore, driven by the anti-deformation drive mechanism, the first and / or second linear extension structures can generate displacement on the amplitude-changing plane to eliminate bending deformation, thereby adjusting the straightness of the telescopic mechanism, maintaining good performance, extending service life, and improving operational safety. When the mechanism and controller work together, the tilt angle information detected by the first and second tilt sensors can be used to automatically determine the start and stop timing of the anti-deformation drive mechanism, realizing automatic adjustment of the straightness of the telescopic mechanism.

[0043] In one embodiment, the anti-deformation driving mechanism comprises an anti-deformation power device 5, which is capable of performing a telescopic action, and the anti-deformation driving mechanism can directly drive the first linear extension structure and / or the second linear extension structure to generate an anti-deformation displacement through the telescopic action of the anti-deformation power device 5. For example, without adding other transmission mechanisms, the anti-deformation power device 5 is arranged between a support structure (such as an arm support bottom plate, not shown in the drawings) and the telescopic mechanism to directly contact the two, thereby driving part of the telescopic mechanism to generate an anti-deformation displacement and adjust the straightness of the telescopic mechanism as a whole. It can be seen that this arrangement is conducive to simplifying the structure of the anti-deformation driving mechanism and reducing production costs.

[0044] Further, the anti-deformation power device 5 comprises a device base body 51 and a movable rod 52, wherein the device base body 51 can be formed with a plug-in through hole, so that the movable rod 52 is movably plugged into the device base body 51, and thus the device base body 51 can drive the movable rod 52 to move telescopically along the plug-in through hole. In addition, the anti-deformation driving mechanism further comprises an anti-deformation support block 6 arranged at one end of the movable rod 52 which is not plugged into the device base body 51, and under the driving of the movable rod 52, the anti-deformation support block 6 can move back and forth along the telescopic direction of the movable rod 52. Referring to Figure 2 The anti-deformation support block 6 can be arranged between one end of the movable rod 52 and a support structure (such as an arm support bottom plate), so that the anti-deformation support block 6 can directly contact the support structure, thereby playing a role of conducting a pushing force. When the movable rod 52 moves telescopically, the anti-deformation support block 6 is pressed against the support structure, so that the device base body 51 obtains a reaction force, thereby driving the telescopic mechanism to generate an anti-deformation displacement.

[0045] In other embodiments, the anti-deformation power device 5 can be arranged to directly push the telescopic mechanism to generate an anti-deformation displacement through the telescopic movement of the movable rod 52 without using the reaction force of the movable rod 52. At this time, the anti-deformation support block 6 connected to the movable rod 52 directly contacts the telescopic mechanism for conducting a pushing force to the telescopic mechanism to generate an anti-deformation displacement. In addition, the contact surface profile of the anti-deformation support block 6 can be adaptively adjusted, for example, the contact surface of the anti-deformation support block 6 can be arranged to fit the plane of the arm support bottom plate, or to match the end outer profile of the telescopic mechanism, so that the telescopic mechanism is more stable when being pushed. Further, the anti-deformation support block 6 can be composed of an elastic material, which is conducive to forming an elastic contact with the arm support bottom plate or the telescopic mechanism, and can effectively protect the contact surfaces of the components.

[0046] In order to further improve the pushing stability of the anti-deformation power device 5, the device base body 51 and the telescopic mechanism can be fixed to each other. For example, referring to Figure 2The device base body 51 is fixedly connected with the first linear extension structure 1. When the movable rod 52 pushes the arm support bottom plate, the device base body 51 is simultaneously subjected to a counter thrust, and then can drive the first linear extension structure 1 to generate a counter deformation displacement, so that the displacement process is stable and smooth, thereby improving the counter deformation effect. Apparently, the device base body 51 is not limited to be fixedly connected with the first linear extension structure 1. In other embodiments, the device base body 51 can be fixedly connected with the second linear extension structure 2, so that when the counter thrust is generated, the device base body 51 can drive the second linear extension structure 2 to generate a counter deformation displacement. In addition, two device base bodies 51 can be arranged to be fixed with the first linear extension structure 1 and the second linear extension structure 2 respectively, so as to simultaneously drive the two to generate a counter deformation displacement, which also has the technical effect of improving the stability of displacement.

[0047] In an embodiment, the counter deformation driving mechanism further comprises a guide support 7, and the counter deformation support block 6 is in sliding fit with the guide support 7. In the process of sliding, the guide support 7 can limit the counter deformation support block 6, so that the counter deformation support block 6 accurately generates a displacement along the extension and retraction direction of the movable rod 52. Referring to Figure 2 The guide support 7 can be fixedly connected with the telescopic mechanism, so as to guide the counter deformation support block 6 and improve the stability of the pushing process, and prevent the pushing direction from deviating to affect the structural reliability. In addition, the guide support 7 can also be fixedly connected with the arm support, or fixed through other structural members, which also has the above technical effects.

[0048] In an embodiment, the guide support 7 is fixedly connected with the telescopic mechanism. For example, the guide support 7 can be fixedly connected with the first linear extension structure 1 or the second linear extension structure 2, as shown in Figure 2 The guide support 7 is fixedly connected with the first linear extension structure 1. In addition, in the case where two counter deformation driving mechanisms are arranged, the two guide supports 7 can be fixedly connected with the first linear extension structure 1 and the second linear extension structure 2 respectively. In this way, through the fixed connection between the guide support 7 and the telescopic mechanism, the counter deformation support block 6 can generate a displacement under the guidance of the guide support 7, whether the device base body 51 is fixed to the telescopic mechanism or the arm support bottom plate, thereby reversely pushing or directly pushing the telescopic mechanism to generate a counter deformation displacement, which is beneficial to adaptively adjust the installation position of the device base body 51.

[0049] When the telescopic mechanism is bent and deformed, the displacement value of the end of the telescopic mechanism is relatively large, and therefore the counter-deformation driving mechanism can be arranged at one end of the first linear extension structure 1 which is not connected with the second linear extension structure 2. Specifically, the device base 51 can be fixed to the end, or the counter-deformation support block 6 can be directly in contact with the end, so that the end can be directly driven to perform counter-deformation displacement, and the first linear extension structure 1 as a whole can be driven to perform counter-deformation displacement, thereby making the pushing process more labor-saving and improving the adjustment effect of counter-deformation. In addition, the counter-deformation driving mechanism can be arranged at one end of the second linear extension structure 2 which is not connected with the first linear extension structure 1, or two counter-deformation driving mechanisms can be arranged at two ends of the first linear extension structure 1 and the second linear extension structure 2 which are not connected with each other, respectively. Similarly, the two arrangement modes can also achieve the above technical effects.

[0050] In an embodiment, the first inclination sensor 3 can be arranged at one end of the first linear extension structure 1 which is not connected with the second linear extension structure 2, and the second inclination sensor 4 can be arranged at one end of the second linear extension structure 2 which is not connected with the first linear extension structure 1. In this way, the values of the first inclination and the second inclination measured by the two sensors can be used to real-time and intuitively feedback the counter-deformation displacement effect of the first linear extension structure 1 and the second linear extension structure 2. In addition, when the inclination difference between the first inclination and the second inclination is adjusted to be within the preset allowable deviation range, the telescopic mechanism can be guaranteed to recover to the preset straightness, so that it can be confirmed that the counter-deformation driving mechanism completes the counter-deformation driving operation, and the adjustment accuracy can be improved.

[0051] Further, in order to enable the counter-deformation driving mechanism to automatically perform driving operation according to the inclination difference, the telescopic mechanism adjustment system further comprises a controller (not shown in the drawings) for controlling the counter-deformation driving mechanism. Specifically, the controller can be in communication with the first inclination sensor 3, the second inclination sensor 4 and the counter-deformation driving mechanism, respectively, and be configured to control the counter-deformation driving mechanism to act when the inclination difference exceeds the preset allowable deviation range, until the inclination difference does not exceed the preset allowable deviation range. For example, when the telescopic mechanism is bent and deformed, the first inclination sensor 3 and the second inclination sensor 4 respectively send the first inclination and the second inclination data signals to the controller, and the controller can analyze and determine that the inclination difference at this time exceeds the preset allowable deviation range. Then, the controller can immediately send a start signal to the counter-deformation power device 5, so that the counter-deformation power device 5 starts driving operation to drive the telescopic mechanism to perform counter-deformation displacement, and finally makes the inclination difference return to the preset allowable deviation range. At this time, the controller sends a stop signal to the counter-deformation power device 5 to control it to stop driving operation, thereby eliminating the bending deformation of the telescopic mechanism and realizing automatic adjustment of straightness, which is beneficial to improving the adjustment accuracy and reliability and ensuring the operation safety.

[0052] The second exemplary embodiment of the present application provides an engineering machine, which obviously has all the technical effects brought by the telescopic mechanism adjusting system, and thus will not be repeated here.

[0053] In one embodiment, referring to Figures 1 to 3 , the engineering machine comprises a telescopic boom (not shown in the drawings) and a telescopic cylinder for driving the telescopic boom to perform telescopic action, the telescopic cylinder comprising a telescopic mechanism, the first linear extension structure 1 is formed as a cylinder assembly 11 of the telescopic cylinder, and the second linear extension structure 2 is formed as a telescopic rod assembly 12 of the telescopic cylinder. Based on the setting of the telescopic mechanism adjusting system described above, the automatic adjustment of the straightness of the telescopic cylinder can be realized, so that the telescopic cylinder can maintain good use performance, effectively prolong its service life, and improve the safety and reliability of use.

[0054] The above describes the optional embodiments of the embodiments of the present application in detail in combination with the drawings, but the embodiments of the present application are not limited to the specific details in the above-described embodiments, and various simple modifications can be made to the technical solutions of the embodiments of the present application within the technical concept of the embodiments of the present application, and these simple modifications all belong to the protection scope of the embodiments of the present application.

[0055] In addition, it should be noted that each specific technical feature described in the above specific embodiments can be combined in any appropriate manner without contradiction, and in order to avoid unnecessary repetition, the embodiments of the present application will not be described again for various possible combinations.

[0056] In addition, various different embodiments of the embodiments of the present application can also be combined in any manner, as long as it does not deviate from the idea of the embodiments of the present application, and it should be considered as disclosed by the embodiments of the present application.

Claims

1. A telescopic mechanism adjustment system, characterized in that, The telescopic mechanism adjusting system comprises: a telescopic mechanism comprising a first linear extension structure (1) and a second linear extension structure (2) telescopically connected; a first inclination sensor (3) for measuring a first inclination between the first linear extension structure (1) and a preset reference plane; a second inclination sensor (4) for measuring a second inclination between the second linear extension structure (2) and the preset reference plane; and a counter-deformation driving mechanism for driving the first linear extension structure (1) and / or the second linear extension structure (2) to generate a counter-deformation displacement so as to keep an inclination difference between the first inclination and the second inclination within a preset allowable deviation range; the counter-deformation driving mechanism comprises a counter-deformation power device (5) capable of forming a telescopic action, and the counter-deformation driving mechanism is arranged to be capable of driving the counter-deformation displacement through the telescopic action of the counter-deformation power device (5); the counter-deformation power device (5) comprises a device base body (51) and a movable rod (52) movably inserted into the device base body (51), and the counter-deformation driving mechanism further comprises a counter-deformation support block (6) arranged at an end of the movable rod (52) which is not inserted into the device base body (51).

2. The telescopic mechanism adjustment system of claim 1, wherein, The device base body (51) and the telescopic mechanism are arranged in a fixed manner.

3. The telescopic mechanism adjustment system of claim 1, wherein, The counter-deformation driving mechanism further comprises a guide support (7), and the counter-deformation support block (6) is in sliding cooperation with the guide support (7).

4. The telescopic mechanism adjustment system of claim 3, wherein, The guide support (7) is fixedly connected with the telescopic mechanism.

5. The telescopic mechanism adjustment system of claim 1, wherein, An end of the first linear extension structure (1) which is not connected with the second linear extension structure (2) is provided with the counter-deformation driving mechanism; and / or, an end of the second linear extension structure (2) which is not connected with the first linear extension structure (1) is provided with the counter-deformation driving mechanism.

6. The telescopic mechanism adjustment system of claim 1, wherein, An end of the first linear extension structure (1) which is not connected with the second linear extension structure (2) is provided with the first inclination sensor (3), and an end of the second linear extension structure (2) which is not connected with the first linear extension structure (1) is provided with the second inclination sensor (4).

7. The extension mechanism adjustment system according to any one of claims 1 to 6, wherein, The telescopic mechanism adjusting system further comprises: a controller in communication with the first inclination sensor (3), the second inclination sensor (4) and the counter-deformation driving mechanism, respectively, and configured to control the counter-deformation driving mechanism to act when the inclination difference exceeds the preset allowable deviation range until the inclination difference does not exceed the preset allowable deviation range.

8. An engineering machine comprising the telescopic mechanism adjusting system according to any one of claims 1 to 7.

9. A working machine according to claim 8, characterised in that, The engineering machine comprises a telescopic boom and a telescopic cylinder for driving the telescopic boom to perform a telescopic action, the telescopic cylinder comprises the telescopic mechanism, the first linear extension structure (1) is formed as a cylinder assembly (11) of the telescopic cylinder, and the second linear extension structure (2) is formed as a telescopic rod assembly (12) of the telescopic cylinder.

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