Telescopic cover and adjusting method thereof

Abstract

The embodiment of the invention provides a telescopic cover and an adjusting method thereof, and relates to the technical field of smoke treatment. The telescopic cover comprises a first supporting beam, a second supporting beam, a plurality of trusses, a synchronous connecting rod, a first driving mechanism, a second driving mechanism, a first proximity switch and a second proximity switch, the first supporting beam and the second supporting beam are spaced, and the two ends of the trusses are in sliding fit with the first supporting beam and the second supporting beam; the two ends of the truss are provided with a first blocking head and a second blocking head respectively. The synchronous connecting rod is connected with the trusses, and the first driving mechanism and the second driving mechanism are arranged on the first supporting beam and the second supporting beam respectively and connected with the trusses. The first proximity switch and the second proximity switch are arranged on the first supporting beam and the second supporting beam respectively and used for outputting a first position signal and a second position signal when the first blocking head or the second blocking head is located in the sensing area. The problems of distortion fracture and deformation of the truss and the synchronous connecting rod can be solved, cost is low, adjusting time is short, and working efficiency is high.

Description

Technical Field

[0001] The present invention relates to the technical field of soot treatment, and more particularly, to a telescopic hood and an adjustment method thereof. Background Art

[0002] In order to prevent soot from overflowing without affecting the hoisting of equipment, a movable telescopic dust hood is usually provided between two spans of a workshop. During the movement of the telescopic hood, since the driving mechanism needs to drive the synchronous connecting rods on both sides to perform telescopic movement, once there is a slight jamming on one side, the strength of the truss is not sufficient to ensure the consistency of the driving mechanisms on both sides, resulting in a certain deviation of the telescopic hood during the traveling process. As the moving distance increases, this deviation gradually increases, and finally may cause the truss and the synchronous connecting rods to be distorted, fractured, and deformed.

[0003] To solve the problems of distortion, fracture, and deformation of the truss and the synchronous connecting rods, the existing methods usually achieve this by enhancing the overall rigidity of the truss. For example, materials such as thicker steel beams are used to connect the two driving mechanisms to ensure their consistency. However, due to the increase in the size of the truss, the corresponding tracks, foundations, support frames, and synchronous connecting rods also need to be enlarged and strengthened accordingly, thus significantly increasing the cost of the telescopic hood and prolonging the construction and adjustment time. Summary of the Invention

[0004] The purpose of the present invention is to provide a telescopic hood and an adjustment method thereof, which can solve the problems of distortion, fracture, and deformation of the truss and the synchronous connecting rods, and have low production costs, shorten the construction and adjustment time, and improve work efficiency.

[0005] The embodiments of the present invention are implemented as follows:

[0006] In a first aspect, the present invention provides a telescopic hood, including:

[0007] A first support beam and a second support beam, the first support beam and the second support beam are arranged at intervals;

[0008] A plurality of trusses, both ends of the plurality of trusses are slidably arranged on the first support beam and the second support beam respectively, and the plurality of trusses are arranged at intervals along the extension direction of the first support beam or the second support beam. A first stop and a second stop are respectively arranged at both ends of each truss;

[0009] A synchronous connecting rod, the synchronous connecting rod is simultaneously connected to the plurality of trusses;

[0010] A first driving mechanism and a second driving mechanism, the first driving mechanism and the second driving mechanism are respectively arranged on the first support beam and the second support beam, and the first driving mechanism and the second driving mechanism are simultaneously connected to the truss at one end;

[0011] A first proximity switch and a second proximity switch, the first proximity switch and the second proximity switch are respectively arranged on the first support beam and the second support beam, and the straight line where the first proximity switch and the second proximity switch are located is parallel or coincident with the straight line where the first stop and the second stop are located; the first proximity switch is used to output a first position signal when the first stop is in the sensing area; the second proximity switch is used to output a second position signal when the second stop is in the sensing area.

[0012] In an alternative embodiment, first guide wheels and second guide wheels are respectively arranged at both ends of the truss, the first guide wheels and the second guide wheels are both located at the bottom of the truss, and the first guide wheels and the second guide wheels are respectively in sliding fit with the first support beam and the second support beam;

[0013] The telescopic cover further includes a first magnetic control switch, a second magnetic control switch, a first magnet and a second magnet, the first magnetic control switch and the first magnet are both arranged on the first guide wheel, and the second magnetic control switch and the second magnet are both arranged on the second guide wheel; the first magnetic control switch is used to output a first pulse signal when triggered by the first magnet, and the second magnetic control switch is used to output a second pulse signal when triggered by the second magnet.

[0014] In an alternative embodiment, the telescopic cover further includes a first travel switch, a second travel switch, a third travel switch and a fourth travel switch, the first travel switch and the third travel switch are arranged at intervals on the first support beam, and the second travel switch and the fourth travel switch are arranged at intervals on the second support beam; the straight line where the first travel switch and the second travel switch are located is parallel to the straight line where the third travel switch and the fourth travel switch are located;

[0015] Wherein, the first travel switch is used to output a first limit signal when triggered by the first stop, the second travel switch is used to output a second limit signal when triggered by the second stop, the third travel switch is used to output a third limit signal when triggered by the first stop, and the fourth travel switch is used to output a fourth limit signal when triggered by the second stop.

[0016] In an alternative embodiment, the telescopic cover further includes a third driving mechanism and a fourth driving mechanism. The third driving mechanism is disposed on the first support beam and is spaced apart from the first driving mechanism. The fourth driving mechanism is disposed on the second support beam and is spaced apart from the second driving mechanism. The third driving mechanism and the fourth driving mechanism are both connected to one of the trusses at the same time.

[0017] In an alternative embodiment, the telescopic cover further includes a first positioning track and a second positioning track. The first positioning track and the second positioning track are respectively disposed on the first support beam and the second support beam.

[0018] Both ends of the truss are respectively provided with a first positioning wheel and a second positioning wheel, and the first positioning wheel and the second positioning wheel are respectively located on both side portions of the truss. The first positioning wheel is in sliding fit with the first positioning track, and the second positioning wheel is in sliding fit with the second positioning track.

[0019] In a second aspect, the present invention provides a telescopic cover adjustment method, which is implemented by using the telescopic cover according to any one of the foregoing embodiments. The telescopic cover adjustment method includes:

[0020] Start the first driving mechanism and the second driving mechanism at the same time.

[0021] Sequentially obtain the first position signal and the second position signal of the plurality of trusses.

[0022] For the same truss, if the first position signal is obtained first, stop the first driving mechanism until the second position signal is obtained, and then start the first driving mechanism.

[0023] For the same truss, if the second position signal is obtained first, stop the second driving mechanism until the first position signal is obtained, and then start the second driving mechanism.

[0024] If the first position signal and the second position signal of the same truss are obtained at the same time, maintain the working states of the first driving mechanism and the second driving mechanism.

[0025] In an alternative embodiment, the step of, for the same truss, if the first position signal is obtained first, stop the first driving mechanism until the second position signal is obtained, and then start the first driving mechanism includes:

[0026] If the first position signal is obtained first, stop the first driving mechanism.

[0027] Within the first preset duration, if the second position signal is acquired, start the first driving mechanism;

[0028] After the first preset duration, if the second position signal is not acquired, stop the second driving mechanism.

[0029] In an alternative embodiment, for the same truss, if the second position signal is acquired first, then the step of stopping the second driving mechanism until the first position signal is acquired and then starting the second driving mechanism includes:

[0030] If the second position signal is acquired first, stop the second driving mechanism;

[0031] Within the second preset duration, if the first position signal is acquired, start the second driving mechanism;

[0032] After the second preset duration, if the first position signal is not acquired, stop the first driving mechanism.

[0033] In an alternative embodiment, after the step of maintaining the operating states of the first driving mechanism and the second driving mechanism if the first position signal and the second position signal of the same truss are acquired simultaneously, the telescopic cover adjustment method further includes:

[0034] Obtain the number of pulses of the first guide wheel of the truss passing through the first proximity switch and the second proximity switch, and the number of pulses of the second guide wheel;

[0035] Within the third preset duration, if the number of pulses of the first guide wheel is different from the number of pulses of the second guide wheel, output a warning signal;

[0036] After the third preset duration, if the number of pulses of the first guide wheel or the number of pulses of the second guide wheel is not acquired, stop the first driving mechanism and the second driving mechanism.

[0037] In an alternative embodiment, the step of outputting a warning signal within the third preset duration if the number of pulses of the first guide wheel is different from the number of pulses of the second guide wheel includes:

[0038] Within the third preset duration, if the number of pulses of the first guide wheel is greater than the number of pulses of the second guide wheel, output the warning signal and add lubricating oil to the second guide wheel;

[0039] Within the third preset duration, if the number of pulses of the first guide wheel is less than the number of pulses of the second guide wheel, output the warning signal and add lubricating oil to the first guide wheel.

[0040] In an alternative embodiment, after the step of simultaneously starting the first driving mechanism and the second driving mechanism, the telescopic cover adjustment method further includes:

[0041] Simultaneously start the third driving mechanism and the fourth driving mechanism;

[0042] Obtain the number of pulses of the first guide wheels and the number of pulses of the second guide wheels of multiple trusses between the first driving mechanism and the third driving mechanism;

[0043] Within a fourth preset time period, if the number of pulses of one of the first guide wheels is different from the number of pulses of the corresponding second guide wheel, maintain the operating states of the first driving mechanism, the second driving mechanism, the third driving mechanism, and the fourth driving mechanism;

[0044] Within a fifth preset time period, if the number of pulses of one of the first guide wheels is greater than the number of pulses of the corresponding second guide wheel, stop the first driving mechanism and the third driving mechanism, and start the second driving mechanism or the fourth driving mechanism;

[0045] Within the fifth preset time period, if the number of pulses of one of the first guide wheels is less than the number of pulses of the corresponding second guide wheel, stop the second driving mechanism and the fourth driving mechanism, and start the first driving mechanism or the third driving mechanism.

[0046] In an alternative embodiment, after the step of within the fifth preset time period, if the number of pulses of one of the first guide wheels is less than the number of pulses of the corresponding second guide wheel, stop the second driving mechanism and the fourth driving mechanism, and start the first driving mechanism or the third driving mechanism, the telescopic cover adjustment method further includes:

[0047] After a sixth preset time period, if the number of pulses of the first guide wheel or the number of pulses of the second guide wheel is not obtained, simultaneously start the first driving mechanism, the second driving mechanism, the third driving mechanism, and the fourth driving mechanism;

[0048] After a seventh preset time period, if the number of pulses of the first guide wheel or the number of pulses of the second guide wheel is not obtained, simultaneously stop the first driving mechanism, the second driving mechanism, the third driving mechanism, and the fourth driving mechanism.

[0049] The beneficial effects of the embodiments of the present invention include:

[0050] The telescopic cover includes a first support beam, a second support beam, a plurality of trusses, a synchronous link, a first driving mechanism, a second driving mechanism, a first proximity switch, and a second proximity switch. The first support beam and the second support beam are arranged at intervals. Both ends of the plurality of trusses are slidably arranged on the first support beam and the second support beam respectively, and the plurality of trusses are arranged at intervals along the extending direction of the first support beam or the second support beam. A first stop and a second stop are respectively arranged at both ends of each truss. The synchronous link is connected to the plurality of trusses at the same time. The first driving mechanism and the second driving mechanism are respectively arranged on the first support beam and the second support beam, and the first driving mechanism and the second driving mechanism are simultaneously connected to the truss at one end. The first proximity switch and the second proximity switch are respectively arranged on the first support beam and the second support beam, and the straight line where the first proximity switch and the second proximity switch are located is parallel or coincident with the straight line where the first stop and the second stop are located. The first proximity switch is used to output a first position signal when the first stop is in the sensing area. The second proximity switch is used to output a second position signal when the second stop is in the sensing area.

[0051] It can be understood that the first driving mechanism and the second driving mechanism simultaneously drive the same truss to slide on the first support beam and the second support beam. Driven by the synchronous link, the subsequent trusses also slide relative to the support beam in turn, so as to realize the elongation or shortening of the telescopic cover to realize the treatment of soot. By arranging the first stop and the second stop on the truss and cooperating with the first proximity switch and the second proximity switch respectively, when the first stop and the second stop of the same truss are in the sensing area of the proximity switch, the first proximity switch and the second proximity switch can respectively output the first position signal and the second position signal. At this time, if the first position signal and the second position signal are output simultaneously, it indicates that the first stop and the second stop move synchronously, that is, both ends of the same truss slide synchronously on the first support beam and the second support beam, without moving deviation, and there are no problems such as jamming of the truss and the synchronous link. If the output first position signal and second position signal are not synchronous, it indicates that the two ends of the truss slide out of sync. At this time, only need to stop the first driving mechanism or the second driving mechanism, so that the other driving mechanism continues to drive one end of the truss to slide. After the corresponding proximity switch can output a position signal, then start the first driving mechanism and the second driving mechanism simultaneously.

[0052] That is to say, the telescopic cover can solve the problems of distortion, fracture and deformation of the truss and the synchronous link, and compared with the existing method of enhancing the overall rigidity of the truss, it can reduce the production cost, shorten the construction and adjustment time, and improve the work efficiency.

[0053] The telescopic cover adjustment method is implemented using the above-mentioned telescopic cover. The telescopic cover adjustment method includes: simultaneously starting the first driving mechanism and the second driving mechanism; sequentially obtaining the first position signal and the second position signal of multiple trusses; for the same truss, if the first position signal is obtained first, stop the first driving mechanism until the second position signal is obtained, and then start the first driving mechanism; for the same truss, if the second position signal is obtained first, stop the second driving mechanism until the first position signal is obtained, and then start the second driving mechanism; if the first position signal and the second position signal of the same truss are obtained simultaneously, maintain the working states of the first driving mechanism and the second driving mechanism.

[0054] This telescopic cover adjustment method can solve the problems of distortion, fracture, and deformation of the truss and synchronous connecting rods. Moreover, compared with the existing methods for enhancing the overall rigidity of the truss, it can reduce production costs, shorten the construction and adjustment time, and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0056] Figure 1 Structural schematic diagram of the telescopic cover from the first perspective provided by the embodiment of the present invention;

[0057] Figure 2 Structural schematic diagram of the telescopic cover from the second perspective provided by the embodiment of the present invention;

[0058] Figure 3 Structural schematic diagram of the telescopic cover from the third perspective provided by the embodiment of the present invention;

[0059] Figure 4 Structural schematic diagram of the first guide wheel and the second guide wheel provided by the embodiment of the present invention;

[0060] Figure 5 For Figure 1 Partial enlarged views of locations A and B in

[0061] Figure 6 Partial flowchart of the telescopic cover adjustment method provided by the embodiment of the present invention;

[0062] Figure 7 For Figure 6 Flowchart of the sub-steps of step S13 in

[0063] Figure 8 It is Figure 6 the flowchart of the sub - steps of step S14 in

[0064] Figure 9 It is Figure 6 the flowchart of the sub - steps of step S17 in

[0065] Figure 10 It is another part of the flowchart of the telescopic cover adjustment method provided by the embodiment of the present invention.

[0066] Icons: 100 - telescopic cover; 11 - first support beam; 12 - second support beam; 20 - truss; 21 - first stop; 22 - second stop; 23 - first guide wheel; 24 - second guide wheel; 25 - first positioning wheel; 26 - second positioning wheel; 30 - synchronous connecting rod; 41 - first driving mechanism; 42 - second driving mechanism; 43 - third driving mechanism; 44 - fourth driving mechanism; 51 - first proximity switch; 52 - second proximity switch; 61 - first magnetic control switch; 62 - second magnetic control switch; 63 - first magnet; 64 - second magnet; 71 - first travel switch; 72 - second travel switch; 73 - third travel switch; 74 - fourth travel switch; 75 - fifth travel switch; 76 - sixth travel switch; 77 - seventh travel switch; 78 - eighth travel switch; 81 - first positioning track; 82 - second positioning track; 91 - tarpaulin. Detailed Embodiments

[0067] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0068] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0069] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0070] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, terms such as "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be construed as indicating or implying relative importance.

[0071] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0072] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0073] As described in the background art, to solve the problems of distortion, fracture, and deformation of the truss and synchronous linkages, the existing methods usually achieve this by enhancing the overall rigidity of the truss. For example, materials such as thicker steel beams are used to connect two driving mechanisms to ensure their consistency. However, due to the increase in the size of the truss, the corresponding tracks, foundations, support frames, and synchronous linkages also need to be enlarged and strengthened accordingly, thus significantly increasing the cost of the telescopic cover and prolonging the construction and adjustment time.

[0074] Based on this, please refer to Figures 1 - 10 , an embodiment of the present invention provides a telescopic cover 100 and its adjustment method, which can effectively improve the above-mentioned technical problems, that is, it can solve the problems of distortion, fracture, and deformation of the truss 20 and the synchronous linkages 30, and has a low production cost, shortens the construction and adjustment time, and improves work efficiency. The telescopic cover 100 and its adjustment method will be described in detail below.

[0075] Please refer to Figures 1 - 3 , Figure 1 is a schematic structural view of the telescopic cover 100 provided in this embodiment from the first perspective, Figure 2This is a schematic structural diagram of the telescopic cover 100 provided in this embodiment from a second perspective. Figure 3 This is a schematic structural diagram of the telescopic cover 100 provided in this embodiment from a third perspective. Combining Figures 1 - 3 , the telescopic cover 100 includes a first support beam 11, a second support beam 12, a plurality of trusses 20, a synchronous connecting rod 30, a first driving mechanism 41, a second driving mechanism 42, a first proximity switch 51, and a second proximity switch 52. The first support beam 11 and the second support beam 12 are arranged at intervals; both ends of the plurality of trusses 20 are slidably arranged on the first support beam 11 and the second support beam 12 respectively, and the plurality of trusses 20 are arranged at intervals along the extending direction of the first support beam 11 or the second support beam 12. A first stop 21 and a second stop 22 are respectively arranged at both ends of each truss 20. The synchronous connecting rod 30 is connected to the plurality of trusses 20 at the same time. The first driving mechanism 41 and the second driving mechanism 42 are respectively arranged on the first support beam 11 and the second support beam 12, and the first driving mechanism 41 and the second driving mechanism 42 are simultaneously connected to the truss 20 at one end; the first proximity switch 51 and the second proximity switch 52 are respectively arranged on the first support beam 11 and the second support beam 12, and the straight lines where the first proximity switch 51 and the second proximity switch 52 are located are parallel or coincident with the straight lines where the first stop 21 and the second stop 22 are located; the first proximity switch 51 is used to output a first position signal when the first stop 21 is in the sensing area; the second proximity switch 52 is used to output a second position signal when the second stop 22 is in the sensing area.

[0076] As Figure 3 shown, in this embodiment, the first driving mechanism 41 and the second driving mechanism 42 are simultaneously connected to the truss 20 at the rightmost end, so as to simultaneously drive the truss 20 to slide on the first support beam 11 and the second support beam 12. Then, driven by the synchronous connecting rod 30, the subsequent trusses 20 also slide relative to the support beam in sequence, so as to realize the elongation or shortening of the telescopic cover 100 to realize the treatment of soot.

[0077] It can be understood that by providing the first stop 21 and the second stop 22 on the truss 20 and cooperating with the first proximity switch 51 and the second proximity switch 52 respectively, when the first stop 21 and the second stop 22 of the same truss 20 are in the sensing areas of the proximity switches, the first proximity switch 51 and the second proximity switch 52 can output the first position signal and the second position signal respectively. At this time, if the first position signal and the second position signal are output simultaneously, it indicates that the first stop 21 and the second stop 22 move synchronously, that is, the two ends of the same truss 20 slide synchronously on the first support beam 11 and the second support beam 12, without moving deviation, and there are no problems such as jamming of the truss 20 and the synchronous link 30. If the output first position signal and second position signal are not synchronous, it indicates that the two ends of the truss 20 slide out of sync. At this time, only need to stop the first drive mechanism 41 or the second drive mechanism 42, so that the other drive mechanism continues to drive one end of the truss 20 to slide. After the corresponding proximity switch can output a position signal, then start the first drive mechanism 41 and the second drive mechanism 42 simultaneously.

[0078] That is to say, the telescopic cover 100 can solve the problems of distortion, fracture and deformation of the truss 20 and the synchronous link 30. And compared with the existing methods of enhancing the overall rigidity of the truss 20, it can reduce the production cost, shorten the construction and adjustment time, and improve the work efficiency.

[0079] It should be noted that a proximity switch is a position switch that can be operated without mechanical direct contact with moving parts. When an object approaches the sensing surface of the proximity switch to the operating distance, the switch can be actuated without mechanical contact and applying any pressure, that is, output a corresponding signal. Therefore, by setting the straight lines where the first proximity switch 51 and the second proximity switch 52 are located to be parallel or coincident with the straight lines where the first stop 21 and the second stop 22 are located, it can be ensured that when the truss 20 moves to the first proximity switch 51 and the second proximity switch 52 under normal conditions, they are all on the same horizontal line, ensuring the adjustment accuracy.

[0080] When the first stop 21 and the second stop 22 of the same truss 20 are unbalanced or out of sync, if the moving speed of the first stop 21 is faster than that of the second stop 22, that is, the first stop 21 triggers the first proximity switch 51 first, the first driving mechanism 41 can be stopped, and the second driving mechanism 42 can continue to work to drive the second stop 22 to move; when the second stop 22 triggers the second proximity switch 52, the first driving mechanism 41 is started again, that is, at this time, the first driving mechanism 41 and the second driving mechanism 42 work simultaneously to continue driving the truss 20 to slide together. It is easy to understand that if the moving speed of the first stop 21 is slower than that of the second stop 22, that is, the second stop 22 triggers the second proximity switch 52 first, the second driving mechanism 42 can be stopped, and the first driving mechanism 41 can continue to work to drive the first stop 21 to move; when the first stop 21 triggers the first proximity switch 51, the second driving mechanism 42 is started again, that is, at this time, the first driving mechanism 41 and the second driving mechanism 42 work simultaneously to continue driving the truss 20 to slide together.

[0081] In addition, it should be noted that the telescopic cover 100 further includes a controller, which is used to receive the first position signal and the second position signal, and control the start and stop actions of the first driving mechanism 41 and the second driving mechanism 42 according to the actual situation.

[0082] Furthermore, in order to facilitate the driving mechanism to drive the truss 20 to move, the two ends of the truss 20 are respectively provided with a first guide wheel 23 and a second guide wheel 24. The first guide wheel 23 and the second guide wheel 24 are both located at the bottom of the truss 20, and the first guide wheel 23 and the second guide wheel 24 are respectively in sliding fit with the first support beam 11 and the second support beam 12.

[0083] Specifically, please refer to Figure 4 , Figure 4 which is the structural schematic diagram of the first guide wheel 23 and the second guide wheel 24 provided in this embodiment. Combining Figures 1 - 4 ,the telescopic cover 100 further includes a first magnetic control switch 61, a second magnetic control switch 62, a first magnet 63 and a second magnet 64. The first magnetic control switch 61 and the first magnet 63 are both arranged on the first guide wheel 23, and the second magnetic control switch 62 and the second magnet 64 are both arranged on the second guide wheel 24; the first magnetic control switch 61 is used to output a first pulse signal when triggered by the first magnet 63, and the second magnetic control switch 62 is used to output a second pulse signal when triggered by the second magnet 64.

[0084] That is to say, during the rotation of the wheel body of the guide wheel, the magnet thereon will be driven to rotate. When the magnet passes by the magnetic control switch, the magnetic control switch will be triggered to output a pulse signal, that is, the first pulse signal and the second pulse signal are output. In this way, the controller can receive the first pulse signal and the second pulse signal and process them. By controlling the start and stop of the first driving mechanism 41 and the second driving mechanism 42, the first guide wheel 23 or the second guide wheel 24 can be adjusted, so as to further improve the adjustment accuracy and ensure the stable operation of the truss 20.

[0085] Specifically, guide wheel counters are provided on the first guide wheel 23 and the second guide wheel 24 of each truss 20. The guide wheel counters can process the pulse signal into the number of pulses. That is, when the first guide wheel 23 or the second guide wheel 24 rotates one circle, it is recorded as one pulse, corresponding to the pulse signals triggered by the magnet passing by the magnetic control switch twice. In this way, the number of pulses can be converted into the traveling distance (for example, if the circumference of the guide wheel is 30 cm and the number of pulses is 2, the traveling distance of the guide wheel is 60 cm). Thus, the real-time position of each truss 20 can be monitored, which is convenient for maintenance and inspection, and the truss 20 can be automatically fine-tuned according to the pulse signal to prevent the truss 20 from deforming and twisting.

[0086] Combined with Figure 3 , the telescopic cover 100 further includes a first travel switch 71, a second travel switch 72, a third travel switch 73 and a fourth travel switch 74. The first travel switch 71 and the third travel switch 73 are arranged at intervals on the first support beam 11, and the second travel switch 72 and the fourth travel switch 74 are arranged at intervals on the second support beam 12; the straight line where the first travel switch 71 and the second travel switch 72 are located is parallel to the straight line where the third travel switch 73 and the fourth travel switch 74 are located. Among them, the first travel switch 71 is used to output a first limit signal when the first stop head 21 is triggered, the second travel switch 72 is used to output a second limit signal when the second stop head 22 is triggered, the third travel switch 73 is used to output a third limit signal when the first stop head 21 is triggered, and the fourth travel switch 74 is used to output a fourth limit signal when the second stop head 22 is triggered.

[0087] That is to say, the controller is used to receive the first limit signal, the second limit signal, the third limit signal and the fourth limit signal. When the corresponding stop head triggers the limit signal of the travel switch, the controller controls the corresponding driving mechanism to stop working. As Figure 3 shown, for the truss 20 connected to the first driving mechanism 41 and the second driving mechanism 42, the first travel switch 71 and the second travel switch 72 are used to limit the movement of the truss 20 to the farthest end, that is, the telescopic cover 100 is extended to the longest position; while the third travel switch 73 and the fourth travel switch 74 are used to limit the movement of the truss 20 to the nearest end, that is, the telescopic cover 100 is folded to the shortest position.

[0088] To prevent the subsequent multiple trusses 20 from being distorted or deformed due to unbalanced tensile or thrust forces under the drive of the synchronous connecting rod 30 during movement, in this embodiment, the telescopic cover 100 further includes a third drive mechanism 43 and a fourth drive mechanism 44. The third drive mechanism 43 is disposed on the first support beam 11 and is spaced apart from the first drive mechanism 41. The fourth drive mechanism 44 is disposed on the second support beam 12 and is spaced apart from the second drive mechanism 42. The third drive mechanism 43 and the fourth drive mechanism 44 are simultaneously connected to one of the trusses 20.

[0089] It should be noted that in this embodiment, the first drive mechanism 41 and the second drive mechanism 42 are located at the forefront of the multiple trusses 20, while the third drive mechanism 43 and the fourth drive mechanism 44 are located at the middle position of the multiple trusses 20. That is, there are multiple trusses 20 between the first drive mechanism 41 and the third drive mechanism 43. In this way, during the actual operation of the telescopic cover 100, the first drive mechanism 41 and the second drive mechanism 42 can be started simultaneously for a period of time, so that the multiple trusses 20 between the first drive mechanism 41 and the third drive mechanism 43 are pulled and slide. Then, the third drive mechanism 43 and the fourth drive mechanism 44 are started simultaneously to continue driving the subsequent multiple trusses 20 to slide, thereby ensuring the smooth overall operation of the telescopic cover 100 and avoiding the deformation and distortion caused by the unbalanced tensile or thrust forces on the subsequent trusses 20.

[0090] Of course, the number of the third drive mechanism 43 and the fourth drive mechanism 44 is not limited. In other embodiments, multiple third drive mechanisms 43 and multiple fourth drive mechanisms 44 can be set according to the length of the telescopic cover 100 and the specific number of the trusses 20, and they are spaced apart and distributed at different positions of the multiple trusses 20 to further ensure the smooth telescopic operation of the telescopic cover 100.

[0091] Similarly, in order to limit the trusses 20 connected to the third drive mechanism 43 and the fourth drive mechanism 44 to control the start and stop of the third drive mechanism 43 and the fourth drive mechanism 44. In this embodiment, the telescopic cover 100 further includes a fifth travel switch 75, a sixth travel switch 76, a seventh travel switch 77, and an eighth travel switch 78. The fifth travel switch 75 and the seventh travel switch 77 are spaced apart on the first support beam 11, and the sixth travel switch 76 and the eighth travel switch 78 are spaced apart on the second support beam 12. The straight line where the fifth travel switch 75 and the seventh travel switch 77 are located is parallel to the straight line where the sixth travel switch 76 and the eighth travel switch 78 are located.

[0092] Please refer to Figure 5 , Figure 5 ForFigure 1 Partial enlarged views at positions A and B in Figure 1 and Figure 5 , the telescopic cover 100 further includes a first positioning track 81 and a second positioning track 82, and the first positioning track 81 and the second positioning track 82 are respectively arranged on the first support beam 11 and the second support beam 12. First positioning wheels 25 and second positioning wheels 26 are respectively arranged at both ends of the truss 20, and the first positioning wheels 25 and the second positioning wheels 26 are respectively located on both side parts of the truss 20. The first positioning wheel 25 is in sliding fit with the first positioning track 81, and the second positioning wheel 26 is in sliding fit with the second positioning track 82.

[0093] Since the first guide wheels 23 and the second guide wheels 24 are arranged at the bottom of the truss 20, contact and slide with the first support beam 11 and the second support beam 12, while the first positioning wheels 25 and the second positioning wheels 26 are arranged at the side parts of the truss 20. During the process of the truss 20 sliding relative to the support beam, the sliding stability of both positions can be further ensured through the sliding fit between the first positioning wheel 25 and the first positioning track 81, and the sliding fit between the second positioning wheel 26 and the second positioning track 82, thereby avoiding the problem of torsional deformation of the truss 20 at both positions.

[0094] In addition, please refer to Figure 1 and Figure 2 , the telescopic cover 100 further includes a tarpaulin 91, and the tarpaulin 91 is simultaneously arranged on a plurality of trusses 20. That is, by arranging the tarpaulin 91, the overflow of soot can be prevented.

[0095] This embodiment also provides a telescopic cover adjustment method, which is implemented by using the above-mentioned telescopic cover 100. Specifically, please refer to Figure 6 , Figure 6 is a partial flowchart of the telescopic cover adjustment method provided by this embodiment. Referring to Figures 1 - 6 , the telescopic cover adjustment method includes:

[0096] Step S11: Simultaneously start the first driving mechanism 41 and the second driving mechanism 42;

[0097] Step S12: Sequentially obtain the first position signal and the second position signal of a plurality of trusses 20;

[0098] Step S13: For the same truss 20, if the first position signal is obtained first, stop the first driving mechanism 41 until the second position signal is obtained, and then start the first driving mechanism 41;

[0099] Step S14: For the same truss 20, if the second position signal is obtained first, stop the second driving mechanism 42 until the first position signal is obtained, and then start the second driving mechanism 42;

[0100] Step S15: If the first position signal and the second position signal of the same truss 20 are obtained simultaneously, the working states of the first driving mechanism 41 and the second driving mechanism 42 are maintained.

[0101] It is easy to understand that through this telescopic cover adjustment method, the problems of distortion, fracture and deformation of the truss 20 and the synchronous link 30 can also be solved. Moreover, compared with the existing method of enhancing the overall rigidity of the truss 20, it can also reduce the production cost, shorten the construction and adjustment time, and improve the work efficiency.

[0102] Specifically, please refer to Figure 7 , Figure 7 For Figure 6 the flow chart of the sub-steps of step S13 in Figure 6 and Figure 7 , step S13 includes:

[0103] Sub-step S131: If the first position signal is obtained first, the first driving mechanism 41 is stopped;

[0104] Sub-step S132: If the second position signal is obtained within the first preset duration, the first driving mechanism 41 is started;

[0105] Sub-step S133: If the second position signal is not obtained after the first preset duration, the second driving mechanism 42 is stopped.

[0106] It can be understood that during the actual movement of the truss 20, the first guide wheel 23 or the second guide wheel 24 may be affected by factors such as the internal driving mechanism (unstable current and voltage) or the external environment (for example, dust or stones), resulting in slight jamming and problems such as out-of-sync or imbalance. Therefore, the first preset duration is set here to reserve a certain amount of time to eliminate these problems. For example, after the current and voltage are stabilized, or after the guide wheel passes through the dust area, it returns to the normal synchronous state.

[0107] It should be noted that the first preset duration is not limited and needs to be determined according to the actual design requirements. For example, if the first preset duration is 60s, it can be understood that within 60s, if the second position signal is obtained, the first driving mechanism 41 is started, that is, the device continues to operate normally. If the second position signal is not obtained after 60s, the first driving mechanism 41 and the second driving mechanism 42 need to be stopped, that is, it is judged as a fault and the whole machine needs to be shut down for inspection.

[0108] Similarly, please refer to Figure 8 , Figure 8 For Figure 6 the flow chart of the sub-steps of step S14 in Figure 6 andFigure 8 , step S14 includes:

[0109] Sub-step S141: If the second position signal is acquired first, stop the second driving mechanism 42;

[0110] Sub-step S142: Within the second preset duration, if the first position signal is acquired, start the second driving mechanism 42;

[0111] Sub-step S143: After the second preset duration, if the first position signal is not acquired, stop the first driving mechanism 41.

[0112] Similarly, it should be noted that the second preset duration is not limited and needs to be determined according to actual design requirements. For example, if the second preset duration is also 60 s, it can be understood that within 60 s, if the first position signal is acquired, start the second driving mechanism 42, that is, the device continues to operate normally. If the first position signal is not acquired after 60 s, the first driving mechanism 41 and the second driving mechanism 42 need to be stopped, that is, it is judged as a fault and the whole machine needs to be shut down for inspection.

[0113] Furthermore, during the actual movement of the truss 20, it is possible that its first guide wheel 23 or second guide wheel 24 gets stuck and does not rotate, but it can still slide on the support beam, causing the first stop 21 and the second stop 22 on the truss 20 to pass by the first proximity switch 51 and the second proximity switch 52 simultaneously, and the situation where the truss 20 is judged to move synchronously normally. Therefore, in order to further fine-tune the guide wheels and ensure that the truss 20 can continue to move smoothly after passing by the proximity switches, please continue to refer to Figure 6 , after step S15, the telescopic cover adjustment method further includes:

[0114] Step S16: Obtain the pulse numbers of the first guide wheel 23 and the second guide wheel 24 of the truss 20 passing by the first proximity switch 51 and the second proximity switch 52;

[0115] Step S17: Within the third preset duration, if the pulse numbers of the first guide wheel 23 and the second guide wheel 24 are different, output a warning signal;

[0116] Step S18: After the third preset duration, if the pulse number of the first guide wheel 23 or the second guide wheel 24 is not acquired, stop the first driving mechanism 41 and the second driving mechanism 42.

[0117] That is to say, when passing by the first proximity switch 51 and the second proximity switch 52, if within a certain time (i.e., within the third preset duration), the number of pulses of the first guide wheel 23 obtained is different from the number of pulses of the second guide wheel 24, it indicates that there is a jamming problem with one of the first guide wheel 23 and the second guide wheel 24, and a warning signal needs to be output to remind the operator to handle it. If no pulse number is obtained within this time period, it means that there is a serious jam in the first guide wheel 23 or the second guide wheel 24, or the first magnetic control switch 61 or the second magnetic control switch 62 is abnormal, and it is necessary to immediately alarm and stop the machine, and then perform corresponding inspection and handling.

[0118] Specifically, please refer to Figure 9 , Figure 9 which is Figure 6 the flowchart of the sub-steps of step S17 in Figure 6 and Figure 9 , step S17 includes:

[0119] Sub-step S171: Within the third preset duration, if the number of pulses of the first guide wheel 23 is greater than the number of pulses of the second guide wheel 24, output a warning signal and add lubricating oil to the second guide wheel 24;

[0120] Sub-step S172: Within the third preset duration, if the number of pulses of the first guide wheel 23 is less than the number of pulses of the second guide wheel 24, output a warning signal and add lubricating oil to the first guide wheel 23.

[0121] It should be noted that there is no limit to the third preset duration either, and it needs to be determined according to the actual design requirements. For example, if the third preset duration is 120s, then within 120s, if a pulse number is received, it is determined that the guide wheel is slightly jammed. At this time, the machine does not need to stop, and only need to add lubricating oil to the corresponding first guide wheel 23 or second guide wheel 24 to make it slide smoothly. If no pulse number is received after more than 120s, it is determined that a fault has occurred and the machine needs to be stopped for inspection.

[0122] Furthermore, since the telescopic cover 100 provided in this embodiment is also provided with a third driving mechanism 43 and a fourth driving mechanism 44, during actual operation, all four driving mechanisms will work, and there are multiple trusses 20 between the first driving mechanism 41 and the third driving mechanism 43, or between the second driving mechanism 42 and the fourth driving mechanism 44. In order to further finely adjust the trusses 20 in this interval and ensure their synchronous and balanced operation. Please refer to Figure 10 , Figure 10 which is another part of the flowchart of the telescopic cover adjustment method provided in this embodiment. Combining Figure 6 and Figure 10 , after step S11, the telescopic cover adjustment method further includes:

[0123] Step S21: Simultaneously start the third driving mechanism 43 and the fourth driving mechanism 44;

[0124] Step S22: Obtain the pulse numbers of the first guide wheels 23 and the second guide wheels 24 of multiple trusses 20 between the first driving mechanism 41 and the third driving mechanism 43;

[0125] Step S23: Within a fourth preset duration, if the pulse number of one of the first guide wheels 23 is different from the pulse number of the corresponding second guide wheel 24, maintain the working states of the first driving mechanism 41, the second driving mechanism 42, the third driving mechanism 43, and the fourth driving mechanism 44;

[0126] Step S24: Within a fifth preset duration, if the pulse number of one of the first guide wheels 23 is greater than the pulse number of the corresponding second guide wheel 24, stop the first driving mechanism 41 and the third driving mechanism 43, and start the second driving mechanism 42 or the fourth driving mechanism 44;

[0127] Step S25: Within a fifth preset duration, if the pulse number of one of the first guide wheels 23 is less than the pulse number of the corresponding second guide wheel 24, stop the second driving mechanism 42 and the fourth driving mechanism 44, and start the first driving mechanism 41 or the third driving mechanism 43.

[0128] It should be noted that neither the fourth preset duration nor the fifth preset duration is limited. For example, in this embodiment, the fourth preset duration is 1 s, and the fifth preset duration is 1 - 3 s. Thus, for step S23, within 1 s, if the pulse number of the first guide wheel 23 is different from the pulse number of the second guide wheel 24, it can be considered within the normal range and no processing is required. When it exceeds 1 s, for example, when the difference is within 1 - 3 s, the corresponding driving mechanism needs to be processed.

[0129] Specifically, please refer to Figure 3 , if there are six trusses 20 between the first driving mechanism 41 and the third driving mechanism 43, and if the pulse number of one of the first guide wheels 23 in the first three trusses 20 is greater than the pulse number of the corresponding second guide wheel 24, it indicates that the first guide wheel 23 is faster, and the first driving mechanism 41 and the third driving mechanism 43 need to be stopped; and since the slower second guide wheel 24 is closer to the second driving mechanism 42, the fourth driving mechanism 44 also needs to be stopped, and the truss 20 is pulled by the second driving mechanism 42 to make the slower second guide wheel 24 slide until the pulse number is sensed, and then all the driving mechanisms are started.

[0130] If the number of pulses of one of the first guide wheels 23 in the last three trusses 20 is greater than that of the corresponding second guide wheel 24, it indicates that the first guide wheel 23 is faster, and the first driving mechanism 41 and the third driving mechanism 43 need to be stopped; and since the slower second guide wheel 24 is closer to the fourth driving mechanism 44, the second driving mechanism 42 needs to be further stopped, and the truss 20 is pushed by the fourth driving mechanism 44 to make the slower second guide wheel 24 slide until the number of pulses is sensed, and then all the driving mechanisms are started.

[0131] It is easy to understand that for the case where the number of pulses of the first guide wheel 23 is less than that of the corresponding second guide wheel 24, and the first driving mechanism 41 or the third driving mechanism 43 is started to pull or push the second guide wheel 24, it is similar to the adjustment situation of the first guide wheel 23 above and will not be elaborated here. Through the above fine-tuning method, the smooth movement of the truss 20 can be further ensured. At the same time, since the synchronous link 30 is connected to multiple trusses 20, this fine-tuning can also improve the smoothness of the synchronous link 30 during the folding process and avoid problems such as its twisting and deformation.

[0132] Please continue to combine Figure 10 , after step S25, the telescopic cover adjustment method further includes:

[0133] Step S26: After the sixth preset time period, if the number of pulses of the first guide wheel 23 or the second guide wheel 24 is not obtained, the first driving mechanism 41, the second driving mechanism 42, the third driving mechanism 43, and the fourth driving mechanism 44 are started simultaneously;

[0134] Step S27: After the seventh preset time period, if the number of pulses of the first guide wheel 23 or the second guide wheel 24 is not obtained, the first driving mechanism 41, the second driving mechanism 42, the third driving mechanism 43, and the fourth driving mechanism 44 are stopped simultaneously.

[0135] It should also be noted that the sixth preset time period and the seventh preset time period are not limited and need to be determined according to actual design requirements. For example, in this embodiment, the sixth preset time period is 4 s and the seventh preset time period is 6 s. Thus, specifically, after step S25, if the number of pulses of the guide wheel still cannot be obtained after another 4 s, the first driving mechanism 41, the second driving mechanism 42, the third driving mechanism 43, and the fourth driving mechanism 44 can be started simultaneously. Under the combined action of the four driving mechanisms, the problematic guide wheel can be pushed and pulled; by this way of moving forward or backward, the telescopic property of the synchronous link 30 is adjusted, and under the drive of the synchronous link 30, the guide wheel is finely adjusted.

[0136] Further, if the pulse number of the guide wheel still cannot be obtained after the first driving mechanism 41, the second driving mechanism 42, the third driving mechanism 43, and the fourth driving mechanism 44 are simultaneously started, it is determined that the guide wheel may be jammed, or the truss 20 or the synchronous link 30 may be abnormal, and it is necessary to stop the machine for inspection. At this time, the pulse numbers recorded previously can be used to quickly find the corresponding position of the guide wheel, which is convenient for maintenance personnel to search and improves the maintenance efficiency.

[0137] In summary, the embodiments of the present invention provide a telescopic cover 100 and an adjustment method thereof. The telescopic cover 100 includes a first support beam 11, a second support beam 12, a plurality of trusses 20, synchronous links 30, a first driving mechanism 41, a second driving mechanism 42, a first proximity switch 51, and a second proximity switch 52. The first support beam 11 and the second support beam 12 are arranged at intervals; both ends of the plurality of trusses 20 are slidably arranged on the first support beam 11 and the second support beam 12 respectively, and the plurality of trusses 20 are arranged at intervals along the extending direction of the first support beam 11 or the second support beam 12. First stoppers 21 and second stoppers 22 are respectively arranged at both ends of each truss 20; the synchronous links 30 are simultaneously connected to the plurality of trusses 20. The first driving mechanism 41 and the second driving mechanism 42 are respectively arranged on the first support beam 11 and the second support beam 12, and the first driving mechanism 41 and the second driving mechanism 42 are simultaneously connected to the truss 20 at one end; the first proximity switch 51 and the second proximity switch 52 are respectively arranged on the first support beam 11 and the second support beam 12, and the straight line where the first proximity switch 51 and the second proximity switch 52 are located is parallel or coincides with the straight line where the first stoppers 21 and the second stoppers 22 are located; the first proximity switch 51 is used to output a first position signal when the first stopper 21 is in the sensing area; the second proximity switch 52 is used to output a second position signal when the second stopper 22 is in the sensing area.

[0138] It can be understood that the first driving mechanism 41 and the second driving mechanism 42 simultaneously drive the same truss 20 to slide on the first support beam 11 and the second support beam 12. Driven by the synchronous connecting rod 30, the subsequent trusses 20 also slide relative to the support beam in sequence, so as to realize the elongation or shortening of the telescopic cover 100 to achieve the treatment of soot. By arranging a first stop 21 and a second stop 22 on the truss 20 and cooperating with the first proximity switch 51 and the second proximity switch 52 respectively, when the first stop 21 and the second stop 22 of the same truss 20 are in the sensing area of the proximity switch, the first proximity switch 51 and the second proximity switch 52 can output a first position signal and a second position signal respectively. At this time, if the first position signal and the second position signal are output simultaneously, it indicates that the first stop 21 and the second stop 22 move synchronously, that is, both ends of the same truss 20 slide on the first support beam 11 and the second support beam 12 synchronously, without moving deviation, and there are no problems such as jamming of the truss 20 and the synchronous connecting rod 30. If the output first position signal and second position signal are not synchronous, it indicates that the sliding of both ends of the truss 20 is not synchronous. At this time, only need to stop the first driving mechanism 41 or the second driving mechanism 42, so that the other driving mechanism continues to drive one end of the truss 20 to slide. After the corresponding proximity switch can output a position signal, then start the first driving mechanism 41 and the second driving mechanism 42 simultaneously. That is to say, the telescopic cover 100 can solve the problems of distortion, fracture and deformation of the truss 20 and the synchronous connecting rod 30, and compared with the existing method of enhancing the overall rigidity of the truss 20, it can reduce the production cost, shorten the construction and adjustment time, and improve the work efficiency.

[0139] The telescopic cover adjustment method is realized by using the above-mentioned telescopic cover 100. The telescopic cover adjustment method includes: starting the first driving mechanism 41 and the second driving mechanism 42 simultaneously; sequentially obtaining the first position signals and the second position signals of a plurality of trusses 20; for the same truss 20, if the first position signal is obtained first, stop the first driving mechanism 41 until the second position signal is obtained, and then start the first driving mechanism 41; for the same truss 20, if the second position signal is obtained first, stop the second driving mechanism 42 until the first position signal is obtained, and then start the second driving mechanism 42; if the first position signal and the second position signal of the same truss 20 are obtained simultaneously, maintain the working states of the first driving mechanism 41 and the second driving mechanism 42. The telescopic cover adjustment method can solve the problems of distortion, fracture and deformation of the truss 20 and the synchronous connecting rod 30, and compared with the existing method of enhancing the overall rigidity of the truss 20, it can reduce the production cost, shorten the construction and adjustment time, and improve the work efficiency.

[0140] The above are only specific embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A telescopic cover, characterized in that: include: A first support beam (11) and a second support beam (12), wherein the first support beam (11) and the second support beam (12) are arranged at an interval; A plurality of trusses (20), wherein two ends of the plurality of trusses (20) are slidably disposed on the first support beam (11) and the second support beam (12), and the plurality of trusses (20) are arranged at intervals along the extension direction of the first support beam (11) or the second support beam (12), and a first stopper (21) and a second stopper (22) are respectively disposed at two ends of each of the trusses (20); A synchronous connecting rod (30), wherein the synchronous connecting rod (30) is connected to the plurality of trusses (20) at the same time; A first driving mechanism (41) and a second driving mechanism (42), wherein the first driving mechanism (41) and the second driving mechanism (42) are respectively arranged on the first supporting beam (11) and the second supporting beam (12), and the first driving mechanism (41) and the second driving mechanism (42) are simultaneously connected to the truss (20) located at one end; A first proximity switch (51) and a second proximity switch (52), wherein the first proximity switch (51) and the second proximity switch (52) are respectively arranged on the first support beam (11) and the second support beam (12), and the straight line where the first proximity switch (51) and the second proximity switch (52) are located is parallel to or coincides with the straight line where the first stopper (21) and the second stopper (22) are located; the first proximity switch (51) is used to output a first position signal when the first stopper (21) is in a sensing area; and the second proximity switch (52) is used to output a second position signal when the second stopper (22) is in the sensing area.

2. The telescopic cover according to claim 1, characterized in that: A first guide wheel (23) and a second guide wheel (24) are respectively provided at both ends of the truss (20); the first guide wheel (23) and the second guide wheel (24) are both located at the bottom of the truss (20); and the first guide wheel (23) and the second guide wheel (24) are respectively slidably matched with the first support beam (11) and the second support beam (12); The telescopic cover (100) further comprises a first magnetic control switch (61), a second magnetic control switch (62), a first magnet (63) and a second magnet (64); the first magnetic control switch (61) and the first magnet (63) are both arranged on the first guide wheel (23); the second magnetic control switch (62) and the second magnet (64) are both arranged on the second guide wheel (24); the first magnetic control switch (61) is used to output a first pulse signal when the first magnet (63) is triggered, and the second magnetic control switch (62) is used to output a second pulse signal when the second magnet (64) is triggered.

3. The telescopic cover according to claim 1, characterized in that: The telescopic cover (100) further comprises a first travel switch (71), a second travel switch (72), a third travel switch (73) and a fourth travel switch (74); the first travel switch (71) and the third travel switch (73) are arranged at intervals on the first support beam (11); the second travel switch (72) and the fourth travel switch (74) are arranged at intervals on the second support beam (12); the straight line where the first travel switch (71) and the second travel switch (72) are located is parallel to the straight line where the third travel switch (73) and the fourth travel switch (74) are located; The first travel switch (71) is used to output a first limit signal when the first gear head (21) is triggered, the second travel switch (72) is used to output a second limit signal when the second gear head (22) is triggered, the third travel switch (73) is used to output a third limit signal when the first gear head (21) is triggered, and the fourth travel switch (74) is used to output a fourth limit signal when the second gear head (22) is triggered.

4. The telescopic cover according to claim 1, characterized in that: The telescopic cover (100) further comprises a third driving mechanism (43) and a fourth driving mechanism (44); the third driving mechanism (43) is arranged on the first supporting beam (11) and is spaced apart from the first driving mechanism (41); the fourth driving mechanism (44) is arranged on the second supporting beam (12) and is spaced apart from the second driving mechanism (42); the third driving mechanism (43) and the fourth driving mechanism (44) are simultaneously connected to one of the trusses (20).

5. The telescopic cover according to claim 1, characterized in that: The telescopic cover (100) further comprises a first positioning track (81) and a second positioning track (82), wherein the first positioning track (81) and the second positioning track (82) are respectively arranged on the first support beam (11) and the second support beam (12); A first positioning wheel (25) and a second positioning wheel (26) are respectively provided at both ends of the truss (20), and the first positioning wheel (25) and the second positioning wheel (26) are respectively located on two sides of the truss (20), the first positioning wheel (25) is slidably matched with the first positioning track (81), and the second positioning wheel (26) is slidably matched with the second positioning track (82).

6. A telescopic cover adjustment method, characterized in that: The telescopic cover (100) according to any one of claims 1 to 5 is used to implement the telescopic cover adjustment method, comprising: Simultaneously starting the first driving mechanism (41) and the second driving mechanism (42); sequentially acquiring the first position signals and the second position signals of the plurality of trusses (20); For the same truss (20), if the first position signal is obtained first, the first driving mechanism (41) is stopped, and the first driving mechanism (41) is started until the second position signal is obtained; For the same truss (20), if the second position signal is obtained first, the second driving mechanism (42) is stopped, and the second driving mechanism (42) is started when the first position signal is obtained; If the first position signal and the second position signal of the same truss (20) are obtained simultaneously, the working states of the first driving mechanism (41) and the second driving mechanism (42) are maintained.

7. The telescopic cover adjustment method according to claim 6, characterized in that: For the same truss (20), if the first position signal is obtained first, the first driving mechanism (41) is stopped, and when the second position signal is obtained, the first driving mechanism (41) is started, the step comprises: If the first position signal is obtained first, the first driving mechanism (41) is stopped; If the second position signal is obtained within a first preset time period, the first driving mechanism (41) is started; If the second position signal is not obtained after the first preset time period, the second driving mechanism (42) is stopped.

8. The telescopic cover adjustment method according to claim 6, characterized in that: For the same truss (20), if the second position signal is obtained first, the second driving mechanism (42) is stopped, and when the first position signal is obtained, the second driving mechanism (42) is started, the step comprises: If the second position signal is obtained first, the second driving mechanism (42) is stopped; If the first position signal is obtained within a second preset time period, the second driving mechanism (42) is started; After the second preset time period, if the first position signal is not obtained, the first driving mechanism (41) is stopped.

9. The telescopic cover adjustment method according to claim 6, characterized in that: After the step of maintaining the working state of the first drive mechanism (41) and the second drive mechanism (42) if the first position signal and the second position signal of the same truss (20) are obtained simultaneously, the telescopic cover adjustment method further comprises: Obtaining the number of pulses of the first guide wheel (23) of the truss (20) passing through the first proximity switch (51) and the second proximity switch (52), and the number of pulses of the second guide wheel (24); Within a third preset time period, if the number of pulses of the first guide wheel (23) is different from the number of pulses of the second guide wheel (24), a warning signal is output; After the third preset time period, if the number of pulses of the first guide wheel (23) or the number of pulses of the second guide wheel (24) is not obtained, the first drive mechanism (41) and the second drive mechanism (42) are stopped.

10. The telescopic cover adjustment method according to claim 9, characterized in that: The step of outputting a warning signal if the number of pulses of the first guide wheel (23) is different from the number of pulses of the second guide wheel (24) within the third preset time period comprises: Within the third preset time period, if the number of pulses of the first guide wheel (23) is greater than the number of pulses of the second guide wheel (24), the warning signal is output and lubricating oil is added to the second guide wheel (24); Within the third preset time period, if the number of pulses of the first guide wheel (23) is less than the number of pulses of the second guide wheel (24), the warning signal is output and lubricating oil is added to the first guide wheel (23).

11. The telescopic cover adjustment method according to claim 6, characterized in that: After the step of simultaneously starting the first driving mechanism (41) and the second driving mechanism (42), the telescopic cover adjustment method further comprises: Simultaneously starting the third driving mechanism (43) and the fourth driving mechanism (44); Obtaining the pulse number of the first guide wheel (23) and the pulse number of the second guide wheel (24) of the plurality of trusses (20) between the first drive mechanism (41) and the third drive mechanism (43); Within a fourth preset time period, if the number of pulses of one of the first guide wheels (23) is different from the number of pulses of the corresponding second guide wheel (24), the working states of the first drive mechanism (41), the second drive mechanism (42), the third drive mechanism (43) and the fourth drive mechanism (44) are maintained; Within a fifth preset time period, if the number of pulses of one of the first guide wheels (23) is greater than the number of pulses of the corresponding second guide wheel (24), the first drive mechanism (41) and the third drive mechanism (43) are stopped, and the second drive mechanism (42) or the fourth drive mechanism (44) is started; Within the fifth preset time period, if the number of pulses of one of the first guide wheels (23) is less than the number of pulses of the corresponding second guide wheel (24), the second drive mechanism (42) and the fourth drive mechanism (44) are stopped, and the first drive mechanism (41) or the third drive mechanism (43) is started.

12. The telescopic cover adjustment method according to claim 11, characterized in that: After the step of stopping the second drive mechanism (42) and the fourth drive mechanism (44) and starting the first drive mechanism (41) or the third drive mechanism (43) if the number of pulses of one of the first guide wheels (23) is less than the number of pulses of the corresponding second guide wheel (24) within the fifth preset time, the telescopic cover adjustment method further comprises: After a sixth preset time, if the number of pulses of the first guide wheel (23) or the number of pulses of the second guide wheel (24) is not obtained, the first drive mechanism (41), the second drive mechanism (42), the third drive mechanism (43) and the fourth drive mechanism (44) are started simultaneously; After the seventh preset time, if the number of pulses of the first guide wheel (23) or the number of pulses of the second guide wheel (24) is not obtained, the first drive mechanism (41), the second drive mechanism (42), the third drive mechanism (43) and the fourth drive mechanism (44) are stopped simultaneously.

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