Low-strength overweight similar model lifting device

Abstract

The invention relates to the technical field of similar simulation experiments, in particular to a low-strength and overweight similar model lifting device.The low-strength and overweight similar model lifting device comprises a frame, a plurality of suction cup assemblies and a vacuumizing mechanism, and a cavity used for containing a similar model is formed in the frame; one side of the frame is provided with an inlet / outlet communicated with the cavity; the multiple suction cup assemblies are evenly distributed on at least one face of the frame and provided with adsorption parts located in the cavities, and the adsorption parts are used for adsorbing the surfaces of the similar models. The air inlet end of the vacuumizing mechanism is communicated with the multiple suction cup assemblies, so that the adsorption parts of the suction cup assemblies generate adsorption force, the low-strength and overweight similar model lifting device can effectively avoid the phenomena of damage and cracking of the similar model due to stress concentration in the lifting process, and then the test effect is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of similar simulation experiments, in particular to a low-strength and super-weight similar model lifting device. Background Art

[0002] Similarity simulation plays an important role in the process of mining scientific research. Similarity simulation is to reduce the scientific problems of the field scale to the laboratory size through a certain similarity ratio. It can simulate the mining of resources, rock collapse, tunnel deformation and destruction in the laboratory, and help scientific researchers to intuitively display the scientific phenomena in the underground engineering mining process. In the similarity simulation test, the corresponding rock model is first prepared according to a certain material similarity ratio, and a specific loading device is used externally to load according to the stress similarity ratio to restore the rock stress environment. A suitable similarity ratio is the primary prerequisite to ensure the accuracy of the test results. Under the similarity ratio restriction, the strength, size, and loading capacity of the external loading system of the similarity model need to have a certain matching. The geometric similarity ratio refers to the ratio of the laboratory model size to the field size. The larger the geometric similarity ratio, the more intuitive the test phenomenon. However, due to the limitation of the external system's extreme loading capacity, the large-scale model needs to have low-strength properties to meet the similarity requirements. With the emergence of various large-scale test systems, the size of similar models has gradually increased.

[0003] At present, the lifting process of large-scale, low-strength and overweight similar models generally adopts lifting methods such as lifting rings and lifting belts. During the lifting process, stress concentration will occur in the local area (lifting part) of the similar model. At the same time, due to the low strength of the model itself, the model is prone to damage and cracking during the lifting process, which seriously affects the test results. Summary of the invention

[0004] The invention provides a low-strength and super-weight similar model lifting device, which can effectively prevent the similar model from being damaged and cracked due to stress concentration during the lifting process, thereby ensuring the test effect.

[0005] An embodiment of the present invention provides a low-strength and super-heavy similar model lifting device, comprising: a frame, a cavity for accommodating a similar model is arranged inside the frame, and an entrance and exit connected to the cavity is arranged on one side of the frame; a plurality of suction cup assemblies, the plurality of suction cup assemblies are evenly distributed on at least one side of the frame, the suction cup assembly has an adsorption portion located in the cavity, and the adsorption portion is used to adsorb the surface of the similar model; a vacuum mechanism, the air inlet end of the vacuum mechanism is connected to the plurality of suction cup assemblies, so that the adsorption portion of the suction cup assembly generates an adsorption force.

[0006] In a possible implementation, the frame includes a top frame and side frames; the entrance and exit are arranged opposite to the top frame, or the entrance and exit are arranged on one of the side frames.

[0007] In a possible implementation, the suction cup assembly includes a first suction cup assembly disposed on a top frame.

[0008] In a possible implementation, the suction cup assembly further includes a second suction cup assembly, and the second suction cup assembly is arranged in pairs on two opposite side frames.

[0009] In a possible implementation, a plurality of suction cup assemblies are arranged in parallel so that the adsorption parts of the plurality of suction cup assemblies generate adsorption forces of the same magnitude.

[0010] In a possible implementation, the suction cup assembly includes a fixing portion, and the suction cup assembly is connected to the frame via the fixing portion.

[0011] In a possible implementation, the fixing portion includes a tube body, and the frame has a mounting surface for mounting the tube body. The tube body is perpendicular to the mounting surface and can be slidably adjusted along its own axial direction.

[0012] In a possible implementation, a reinforcing sleeve is provided on the mounting surface of the frame, and the tube body passes through the reinforcing sleeve.

[0013] In a possible implementation, the fixing portion further includes a fastener threadedly connected to the tube body, and the tube body is fixedly connected to the mounting surface via the fastener.

[0014] In a possible implementation, it also includes an adjustment mechanism arranged on the outer surface of the frame, the adjustment mechanism includes: an adjustment frame connected to at least a portion of the tube body on one side of the frame; a drive assembly, the fixed end and the telescopic end of the drive assembly are respectively connected to the frame and the adjustment frame, and are used to drive the adjustment frame to vertically approach or move away from the frame.

[0015] The low-strength and super-weight similar model lifting device provided by the present invention, when the low-strength and super-weight similar model lifting device is in operation, the similar model enters the cavity of the frame through the entrance and exit, and the suction cup assembly is evacuated by the vacuum mechanism, so that a plurality of suction cup assemblies evenly arranged are adsorbed on the outer surface of the similar model, completing the reliable connection between the similar model and the frame, and then the similar model can be lifted and moved by the frame, and the force application points on the similar model are evenly distributed, which can effectively avoid the similar model from being damaged and cracked due to stress concentration during the lifting process, thereby ensuring the test effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a three-dimensional structural schematic diagram of a low-strength and super-heavy similar model lifting device provided by the present invention.

[0018] Figure 2 The present invention provides a schematic diagram of the planar structure of a low-strength and super-heavy similar model lifting device.

[0019] Figure 3 It is a three-dimensional structural schematic diagram of a suction cup assembly provided by the present invention.

[0020] Figure 4 It is a structural schematic diagram of a suction cup assembly connected to a side frame provided by the present invention; Figure 5 It is a structural schematic diagram of the connection between an adjustment mechanism and a side frame provided by the present invention; Figure 6 It is a structural schematic diagram of another adjustment mechanism provided by the present invention connected with a side frame.

[0021] Reference numerals: a. Similar model; 1. Frame; 11. Top frame; 12. Side frame; 13. Reinforced sleeve; 14. 2. Suction cup assembly; 21. Adsorption part; 22. First suction cup assembly; 23. Second suction cup assembly; 24. Tube body; 25. Fastener; 26. Spring; 3. Vacuum extraction mechanism; 4. Adjusting mechanism; 41. Adjusting frame; 42. Driving assembly; 421. Motor; 422. Cam; 43. Elastic sleeve. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Combine the following Figure 1-Figure 6 A low-strength and super-heavy similar model lifting device provided by an embodiment of the present invention is described, comprising a frame 1, a plurality of suction cup assemblies 2 and a vacuum pumping mechanism 3, wherein: A cavity for accommodating the similar model a is provided inside the frame 1, and an entrance and exit communicating with the cavity are provided on one side of the frame 1.

[0024] A plurality of suction cup assemblies 2 are evenly distributed on at least one side of the frame 1 . The suction cup assembly 2 has an adsorption portion 21 located in the cavity. The adsorption portion 21 is used for adsorbing the surface of a similar model a.

[0025] The air inlet end of the vacuum pumping mechanism 3 is communicated with the plurality of suction cup assemblies 2 so that the suction parts 21 of the suction cup assemblies 2 generate suction force.

[0026] In the embodiment of the present invention, when the lifting device is in operation, the similar model a enters the cavity of the frame 1 through the entrance and exit, and the suction cup assembly 2 is evacuated by the vacuum mechanism 3, so that the multiple suction cup assemblies 2 evenly arranged are adsorbed on the outer surface of the similar model a, completing the reliable connection between the similar model a and the frame 1, and then the similar model a can be lifted and moved by the frame 1, and the force points on the similar model a are evenly distributed, which can effectively avoid the damage and cracking of the similar model a due to stress concentration during the lifting process, thereby ensuring the test effect.

[0027] Specifically, after the model is placed in the cavity of the frame 1, the vacuum mechanism 3 is started, and the suction cup assembly 2 forms a sealed space with the surface of the similar model a. A negative pressure is formed at the adsorption portion 21 by vacuuming, and an adsorption force is generated to achieve a reliable connection between the similar model a and the frame 1. Multiple suction cup assemblies 2 act simultaneously to achieve dispersed force lifting. The cavity design of the frame 1 provides overall support, multiple suction cup assemblies 2 are evenly distributed and dispersed, and the vacuum mechanism 3 provides stable suction. The combined design of the frame 1, the evenly distributed suction cup assembly 2 and the vacuum mechanism 3 solves the technical problem that the low-strength and overweight similar model a is prone to stress concentration and breakage during the lifting process.

[0028] In the related technology, the lifting of similar model a is generally carried out by lifting with lifting rings or lifting with lifting belts. During the lifting process, stress concentration will occur at the lifting position of similar model a, especially for such low-strength and overweight similar model a. It is easy to cause damage or cracking of similar model a at the stress concentration position, thereby affecting the subsequent experimental results and efficiency.

[0029] In the embodiment provided by the present invention, the similar model a is loaded into the cavity in the frame 1, the frame 1 provides overall support, and then a plurality of suction cup assemblies 2 evenly arranged on the frame 1 are connected to the surface of the similar model a through adsorption force, thereby achieving a reliable connection between the frame 1 and the similar model a, and the force application points on the similar model a are evenly distributed, thereby avoiding the problem of stress concentration, and avoiding the damage and cracking of the low-strength and overweight similar model a due to stress concentration during the lifting process, thereby ensuring the effect and efficiency of subsequent experiments.

[0030] Optionally, a mechanical clamping device or a magnetic adsorption device may be used, but mechanical clamping is prone to cause local extrusion damage, and magnetic adsorption requires the model to have specific material properties.

[0031] Among them, an intelligent control device can also be added to automatically adjust the vacuum degree and realize a real-time monitoring system of the adsorption force to ensure that multiple suction cup assemblies 2 apply a specific adsorption force to similar models a, thereby further improving the protection of similar models a during the lifting process.

[0032] The vacuum pumping mechanism 3 in the present invention can be a vacuum pump, which is the main power source of the system. When the suction cup assembly 2 is in close contact with the surface of the similar model a, the vacuum pump can ensure that the closed space of the contact part of the suction cup assembly 2 and the model surface is in a vacuum state through physical methods, so that the suction cup assembly 2 and the surface of the similar model a are closely connected. After setting the rated pressure, the vacuum pump can be started with one button.

[0033] In some embodiments, the frame 1 includes a top frame 11 and side frames 12 ; the entrance and exit are arranged opposite to the top frame 11 , or the entrance and exit are arranged on one of the side frames 12 .

[0034] In the present invention, the frame 1 is formed by combining the top frame 11 and the side frame 12. The entrance and exit can be set at the bottom or the side. The top frame 11 bears the main lifting load, and the side frame 12 provides lateral support. The entrances and exits at different positions meet different operation requirements. By setting the combined structure of the top frame 11 and the side frame 12 and reasonably arranging the entrances and exits, the structural strength of the frame 1 is improved, and it is convenient to place and take out similar models a.

[0035] Specifically, the top frame 11 is provided with a lifting ring 14, and the number of the lifting rings 14 can be 4, which are respectively provided at the four end corners of the top frame 11. The lifting rings 14 are used to connect the lifting equipment, so as to lift the frame 1 together with the similar model a. Of course, the number of the lifting rings 14 can also be set to 6 or 8 according to the volume size of the frame 1, which is not limited here.

[0036] In a specific embodiment, the entrance and exit of the frame 1 is set at the bottom, that is, it is set opposite to the top frame 11. When placing the similar model a into the frame 1, it is only necessary to lift the frame 1 to the top of the similar model a, and then lower the frame 1, and cover the frame 1 on the outside of the similar model a, and then the similar model a can be loaded into the frame 1 through the entrance and exit. When the similar model a needs to be taken out after the experiment, the suction cup assembly 2 is separated from the similar model a, and then the frame 1 is lifted, and the similar model a can be taken out of the frame 1, which is easy to operate. In addition, the entrance and exit are set at the bottom of the frame 1, so that only one side of the frame 1 is the entrance and exit, which can ensure the integrity of the frame 1, thereby ensuring the structural strength of the frame 1, so as to ensure the fixing effect of the similar model a.

[0037] Specifically, at this time, the top frame 11 of the frame 1 includes five top cross beams, the side frame 12 includes four side cross beams, and the size of the internal cavity of the frame 1 is slightly larger than the size of the similar model a, so that the similar model a can be loaded into the frame 1, and at the same time, it is convenient for the suction cup assembly 2 to connect the similar model a.

[0038] In another specific embodiment, the entrance and exit of the frame 1 is set on one of the side frames 12, and a roller can be set at the bottom of the frame 1. When the similar model a needs to be loaded into the frame 1, the frame 1 is moved to the entrance and exit of the similar model a through the roller and aligned with the entrance and exit, and then the frame 1 is moved so that the similar model a enters the frame 1 through the entrance and exit. When the similar model a needs to be taken out after the experiment, the suction cup assembly 2 is separated from the similar model a, and then the frame 1 is pushed so that the similar model a exits the frame 1.

[0039] In some embodiments, the suction cup assembly 2 includes a first suction cup assembly 22 disposed on the top frame 11 .

[0040] In the present invention, the first suction cup assembly 22 on the top directly provides vertical upward adsorption force and is the main force point for lifting. By arranging multiple first suction cup assemblies 22 on the top frame 11, effective adsorption of the top of the model is achieved, ensuring vertical force during lifting.

[0041] Specifically, for some similar models a that are not too heavy, only the first suction cup assembly 22 may be provided, and the frame 1 may only have the top frame 11. When the similar model a is lifted, the top frame 11 is moved to the top of the similar model a, and then the top surface of the similar model a is adsorbed by the multiple first suction cup assemblies 22, thereby realizing an effective connection between the similar model a and the frame 1. Then, the lifting of the similar model a can be realized by lifting the frame 1.

[0042] Optionally, for some similar models a that are not too heavy, only the first suction cup assembly 22 may be set, and the frame 1 still adopts a frame structure enclosed by a top frame 11 and a side frame 12. An entrance and exit are provided at the bottom of the frame 1. By loading the similar model a into the frame 1, the similar model a can be preliminarily positioned, and then the multiple first suction cup assemblies 22 and the parts of the similar model a that need to be adsorbed are determined, thereby ensuring the stability of the subsequent lifting of the similar model a.

[0043] In some embodiments, the suction cup assembly 2 further includes a second suction cup assembly 23 , and the second suction cup assembly 23 is disposed in pairs on two opposite side frames 12 .

[0044] In the present invention, the lateral suction cup provides a horizontal support force to prevent the similar model a from tilting or shaking. By arranging a second suction cup assembly 23 on the symmetrical side frame 12, a lateral support force is provided to further optimize the force distribution.

[0045] Specifically, arranging the second suction cup assembly 23 in pairs on two opposite side frames 12 can not only provide support force for the similar model a to prevent the similar model a from tilting, but also, after the second suction cup assembly 23 is adsorbed and connected to the similar model a, it can also exert an upward force on the similar model a by lifting the frame 1, thereby reducing the force between the first suction cup assembly 22 and the similar model a, further sharing the force applied to the similar model a, and further alleviating the problem of stress concentration. When lifting similar models a of the same weight, the force between each suction cup assembly 2 and the similar model a can be effectively reduced. When the force between the suction cup assembly 2 and the similar model a remains unchanged, this solution can lift a heavier similar model a, thereby improving the intuitive accuracy of the experiment.

[0046] In a specific embodiment, the second suction cup assembly 23 is disposed on two side frames 12 that are disposed opposite to each other, and the second suction cup assembly 23 is not disposed on the other two side frames 12 .

[0047] In another specific embodiment, second suction cup assemblies 23 are respectively provided on the four side frames 12, which can further reduce the acting force between a single suction cup assembly 2 and the similar model a.

[0048] In some embodiments, a plurality of suction cup assemblies 2 are arranged in parallel so that the adsorption parts 21 of the plurality of suction cup assemblies 2 generate adsorption forces of the same magnitude.

[0049] In the present invention, based on the principles of fluid mechanics, the pressure of each branch in the parallel pipeline is equal to ensure uniform adsorption force. All suction cup assemblies 2 are connected to the vacuum pumping mechanism 3 through parallel pipelines. The parallel setting of the suction cup assemblies 2 ensures that each suction cup assembly 2 generates the same adsorption force, thereby achieving a more uniform stress distribution.

[0050] Specifically, the vacuum mechanism 3 and the suction cup assembly 2 are connected by a flexible hose. When the similar model a is lifted and moved, the vacuum mechanism 3 moves synchronously. The flexible connection method can avoid the situation where the vacuum mechanism 3 and the similar model a move asynchronously, thereby avoiding the pipeline between the vacuum mechanism 3 and the frame 1 from affecting the movement of the similar model a, thereby ensuring the stability of the movement of the similar model a.

[0051] Optionally, an independent pressure regulating valve can be added to each branch, and the suction cup assemblies 2 on different surfaces of the frame 1 are respectively connected to different branches. The pressure regulating valves are used to make the adsorption force between the suction cup assemblies 2 different. The adsorption force of the first suction cup assembly 22 on the top frame 11 can be increased, while the adsorption force of the second suction cup assembly 23 on the side frame 12 can be appropriately reduced.

[0052] like Figure 3 As shown, in some embodiments, the suction cup assembly 2 includes a fixing portion, and the suction cup assembly 2 is connected to the frame 1 via the fixing portion.

[0053] In the present invention, a fixing part is provided on the suction cup assembly 2 to be connected with the frame 1, and the fixing part provides a mechanical connection. Through the design of the fixing part, the suction cup position is ensured to be stable, thereby achieving a reliable connection between the suction cup assembly 2 and the frame 1.

[0054] In some embodiments, the fixing portion includes a tube body 24, and the frame 1 has a mounting surface for mounting the tube body 24. The tube body 24 is perpendicular to the mounting surface and can be slidably adjusted along its own axial direction.

[0055] In the present invention, an axially slidable tube body 24 is provided on the mounting surface of the frame 1, the tube body 24 remains perpendicular to the mounting surface, and the tube body 24 slides freely along its own axis. By adjusting the extended length of the tube body 24, the distance from the suction cup assembly 2 to the surface of the similar model a is changed, thereby realizing precise adjustment of the suction cup position to adapt to models of different sizes and shapes. The design of the tube body 24 being perpendicular to the mounting surface ensures the accuracy of the force direction of the suction cup.

[0056] Moreover, the tube body 24 can slide axially, so that the adsorption part 21 of the suction cup assembly 2 can be moved toward the frame 1 before the similar model a is loaded, thereby providing enough space for the similar model a and facilitating the loading of the similar model a into the frame 1. Then the tube body 24 is moved in the opposite direction, so that the adsorption part 21 of the suction cup assembly 2 fits the surface of the similar model a, and is adsorbed and connected with the similar model a under the action of the vacuum mechanism 3. After the experiment is completed, when the frame 1 needs to be separated from the similar model a, the tube body 24 can also be moved to facilitate the friction between the suction cup assembly 2 and the similar model a when lifting the frame 1, thereby preventing the suction cup assembly 2 or the similar model a from being damaged.

[0057] like Figure 4-6 As shown, in some embodiments, a reinforcing sleeve 13 is provided on the mounting surface of the frame 1 , and the tube body 24 passes through the reinforcing sleeve 13 .

[0058] In the present invention, a reinforcing sleeve 13 is arranged on the mounting surface of the frame 1, and the tube body 24 passes through the reinforcing sleeve 13. The reinforcing sleeve 13 increases the contact area at the connection between the tube body 24 and the frame 1, disperses stress, and provides better support and guidance. Through the design of the reinforcing sleeve 13, the strength of the connection of the tube body 24 is improved, the stability of the overall structure is enhanced, and the service life is extended.

[0059] Specifically, the reinforcing sleeve 13 can be provided only on the side frame 12 of the frame 1, because after the suction cup assembly 2 of the side frame 12 is adsorbed with the similar model a, the gravity direction of the similar model a is perpendicular to the direction of the suction pipe assembly tube body 24. By providing the reinforcing sleeve 13, the suction cup assembly 2 can be adjusted along the axial direction, and a greater support effect can be provided for the suction cup assembly 2, thereby preventing the suction cup assembly 2 from being damaged due to excessive local force. The suction cup assembly 2 on the top frame 11 can be fixed, and after the suction cup assembly 2 is adsorbed and connected with the similar model a, the direction of the force applied by the similar model a to the suction cup assembly 2 is consistent with the axial direction of the suction cup assembly 2, so that the suction cup assembly 2 on the top frame 11 can withstand a greater force.

[0060] Optionally, a lubricating bushing may be added inside the reinforced sleeve 13, or a dustproof sealing structure may be designed.

[0061] like Figure 4 As shown, in a specific embodiment, the fixing portion further includes a fastener 25 threadedly connected to the tube body 24 , and the tube body 24 is fixedly connected to the mounting surface via the fastener 25 .

[0062] In the present invention, a thread matching with the fastener 25 is provided on the tube body 24, and the tube body 24 is fixed to the mounting surface by the fastener 25. The fastener 25 generates an axial pressing force through thread engagement to fix the position of the tube body 24. The design of the fastener 25 connected by thread enables quick locking and convenient adjustment of the position of the tube body 24, thereby improving the convenience of operation of the device.

[0063] Specifically, the distance that the tube body 24 slides along the axial direction does not need to be too large. The tube body 24 includes a sliding support portion in the middle and threaded sections arranged at both ends of the sliding support portion. The fastener 25 is a nut, and the nut and the threaded section are connected by threads. When the tube body 24 needs to be adjusted, the nut can be loosened. After the adjustment is completed, the nut is abutted against the two ends of the reinforcing sleeve 13 to complete the reliable fixation of the suction cup assembly 2.

[0064] In another embodiment, an adjusting mechanism 4 is further included, which is arranged on the outer surface of the frame 1. The adjusting mechanism 4 includes: an adjusting frame 41, which is connected to at least a portion of the tube body 24 on one side of the frame 1; a driving component 42, wherein the fixed end and the telescopic end of the driving component 42 are respectively connected to the frame 1 and the adjusting frame 41, and is used to drive the adjusting frame 41 to vertically approach or move away from the frame 1.

[0065] In the present invention, an adjustment frame 41 is provided to connect part of the tube body 24, and a driving assembly 42 generates power, and the connected tube body 24 is driven to move synchronously through the adjustment frame 41, so as to achieve the overall position adjustment of the suction cup group. Through the design of the adjustment mechanism 4, the synchronous adjustment function of multiple suction cups is achieved, the adjustment efficiency is improved, and the coordinated work of the suction cup group is ensured.

[0066] Specifically, when the similar model a needs to be loaded into the frame 1, the driving component 42 drives the adjustment frame 41 together with the plurality of suction cup components 2 to move outward, thereby making enough space for the similar model a inside the frame 1. After the similar model a is loaded into the frame 1, the driving component 42 drives the adjustment frame 41 to move in the opposite direction, thereby making the adsorption portion 21 of the suction cup component 2 fit the surface of the similar model a.

[0067] Optionally, an automatic leveling function can be added, or position memory and one-button reset functions can be added.

[0068] like Figure 5 As shown, in a specific embodiment, the adjustment frame 41 is connected to the frame 1 through an elastic sleeve 43, so that the adjustment frame 41 can move toward the frame 1 or away from the frame 1, and the driving assembly 42 includes a motor 421 and a cam 422 arranged at the output end of the motor 421. The outer peripheral surface of the cam 422 abuts against the adjustment frame 41. The motor 421 drives the cam 422 to rotate a certain angle, and the cam 422 can push the adjustment frame 41 to a certain displacement in the direction away from the frame 1. If the motor 421 drives the cam 422 to rotate a certain angle, the adjustment frame 41 will be reset under the elastic action of the elastic sleeve 43, so that the adjustment frame 41 can move toward the frame 1. Moreover, the elasticity of the elastic sleeve 43 can automatically adjust the position of the suction cup assembly 2, so that the fitting effect between the suction cup assembly 2 and the similar model a can be guaranteed. Specifically, in the process of loading the similar model a into the frame 1, the cam 422 is first driven to rotate by the motor 421, so that the cam 422 pushes the adjustment frame 41 to move outward, and then the frame 1 is covered outside the similar model a by the lifting equipment. At this time, the frame 1 is kept in a suspended state, and then the cam 422 is driven to rotate by the motor 421, so that the adjustment frame 41 moves toward the frame 1 under the action of the elastic sleeve 43, and the adjustment frame 41 drives the multiple suction cup assemblies 2 to move toward the similar model a, and makes the adsorption part 21 of the suction cup assembly 2 fully fit with the surface of the similar model a. During the fitting process, since the suction cup assembly 2 is relatively arranged on the side frame 12 of the frame 1, that is, the adjustment frame 41 on the relatively arranged side frame 12 is driven by the same elastic sleeve 43, it can ensure that the thrusts on the opposite sides of the suction cup assembly 2 and the similar model a are equal, thereby playing the function of automatic positioning for the suspended frame 1, so that the center line of the frame 1 and the similar model a are consistent, and then continue with the lower frame 1, and fit the top surface of the similar model a through the suction cup assembly 2 on the top frame 11 of the frame 1, to ensure the accuracy of the suction position of the top suction cup assembly 2 and the similar model a. Prevent the similar model a from being non-concentric with the center line of the frame 1, and the suction cup assembly 2 of the top frame 11 and the top surface of the similar model a are offset, thereby causing different forces at different positions of the similar model a, and further improve the uniformity of the force when the similar model a is lifted.

[0069] like Figure 6 As shown, in another specific embodiment, a spring 26 is provided outside the tube body 24 of the suction cup assembly 2, one end of the spring 26 abuts against the mounting surface, and the other end abuts against the adsorption portion 21 of the suction cup, for providing an elastic force for the suction cup assembly 2 to move toward the similar model a. The driving assembly 42 still includes a motor 421 and a cam 422, the outer peripheral surface of the cam 422 abuts against the adjustment frame 41, and the cam 422 pushes the adjustment frame 41 to move away from the frame 1 and compresses the spring 26. When the cam 422 rotates, the spring 26 drives the suction cup assembly 2 to move and move with the similar model a, and multiple suction cup assemblies 2 drive the adjustment frame 41 to move toward the frame 1. This form can not only serve the purpose of positioning the similar model a and the frame 1, but also ensure the fitting effect of each suction cup assembly 2 with the similar model a.

[0070] The low-strength and super-heavy similar model A lifting device provided by the embodiment of the present invention is performed according to the following steps: S1. Grind the outer surface of the similar model a to make it smooth, to ensure that there will be no local leakage during the suction process. Determine the external dimensions of the similar model a, and adjust the position of the suction cup assembly 2 through the adjustment mechanism 4, so that the internal net dimensions of the frame 1 are slightly larger than the model dimensions, so that the frame 1 can easily fit the similar model a; S2, using a crane to lift the frame 1 and put it on the outside of the similar model a, and adjusting the position of the suction cup assembly 2 through the adjustment mechanism 4, so that the suction cup assembly 2 is in full contact with the surface of the model, which is convenient for the next step of vacuum extraction; S3, connect the main interface of the suction cup assembly 2 to the vacuum pump, turn on the vacuum pump and set a certain negative pressure to perform vacuum extraction. After the working pressure of the vacuum pump is stable, all the suction cup assemblies 2 on the frame 1 have established a stable connection relationship with the surface of the similar model a, and the suction force of all the suction cup assemblies 2 is equal; S4, hang the lifting sling on the lifting ring on the upper part of the suction cup frame 1 to lift and move the model. During the movement, the vacuum pump moves with the suction cup frame 1.

[0071] S5. When placing similar model a on the test platform, turn off the vacuum pump and disconnect the hose between the vacuum pump and the suction cup frame 1. In the absence of power, the suction cup on the surface of similar model a will gradually detach from the model surface. At this time, the suction cup assembly 2 is separated from the surface of similar model a through the adjustment mechanism 4, and then the suction cup frame 1 is moved to another position using an overhead crane. The movement of similar model a is completed.

[0072] When the low-strength and ultra-heavy similar model a lifting device is in operation, the similar model a enters the cavity of the frame 1 through the entrance and exit, and the suction cup assembly 2 is evacuated by the vacuum mechanism 3, so that the multiple suction cup assemblies 2 evenly arranged are adsorbed on the outer surface of the similar model a, completing the reliable connection between the similar model a and the frame 1, and then the similar model a can be lifted and moved by the frame 1, and the force application points on the similar model a are evenly distributed, which can effectively avoid the similar model a from being damaged and cracked due to stress concentration during the lifting process, thereby ensuring the test effect.

[0073] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A low-strength and super-heavy similar model lifting device, characterized in that: include: A frame (1), wherein a cavity for accommodating a similar model is provided inside the frame (1), and an entrance and exit communicating with the cavity are provided on one side of the frame (1); A plurality of suction cup assemblies (2), the plurality of suction cup assemblies (2) being evenly distributed on at least one side of the frame (1), the suction cup assemblies (2) having an adsorption portion (21) located in the cavity, the adsorption portion (21) being used to adsorb the surface of the similar model; A vacuum pumping mechanism (3), wherein an air inlet end of the vacuum pumping mechanism (3) is in communication with the plurality of suction cup assemblies (2), so that the suction parts (21) of the suction cup assemblies (2) generate suction force.

2. The low-strength and super-heavy similar model lifting device according to claim 1 is characterized in that: The frame (1) comprises a top frame (11) and a side frame (12); The entrance and exit are arranged opposite to the top frame (11), or the entrance and exit are arranged on one of the side frames (12).

3. The low-strength and super-heavy similar model lifting device according to claim 2 is characterized in that: The suction cup assembly (2) comprises a first suction cup assembly (22) arranged on the top frame (11).

4. The low-strength and super-heavy similar model lifting device according to claim 3 is characterized in that: The suction cup assembly (2) further comprises a second suction cup assembly (23), wherein the second suction cup assembly (23) is arranged in pairs on two opposite side frames (12).

5. The low-strength and super-heavy similar model lifting device according to claim 1 is characterized in that: The plurality of suction cup assemblies (2) are arranged in parallel so that the adsorption parts (21) of the plurality of suction cup assemblies (2) generate adsorption forces of the same magnitude.

6. The low-strength and super-heavy similar model lifting device according to any one of claims 1 to 5, characterized in that: The suction cup assembly (2) comprises a fixing portion, and the suction cup assembly (2) is connected to the frame (1) via the fixing portion.

7. The low-strength and super-heavy similar model lifting device according to claim 6 is characterized in that: The fixing portion comprises a tube body (24); the frame (1) has a mounting surface for mounting the tube body (24); the tube body (24) is perpendicular to the mounting surface and can be slidably adjusted along its own axial direction.

8. The low-strength and super-heavy similar model lifting device according to claim 7 is characterized in that: A reinforcing sleeve (13) is provided on the mounting surface of the frame (1), and the tube body (24) passes through the reinforcing sleeve (13).

9. The low-strength and super-heavy similar model lifting device according to claim 8 is characterized in that: The fixing portion further comprises a fastener (25) threadedly connected to the tube body (24), and the tube body (24) is fixedly connected to the mounting surface via the fastener (25).

10. The low-strength and super-heavy similar model lifting device according to claim 8, characterized in that: It also includes an adjustment mechanism (4) arranged on the outer surface of the frame (1), and the adjustment mechanism (4) includes: An adjustment frame (41) connected to at least a portion of the tube body (24) on one side of the frame (1); A driving assembly (42), wherein a fixed end and a telescopic end of the driving assembly (42) are respectively connected to the frame (1) and the adjusting frame (41), and is used to drive the adjusting frame (41) to vertically approach or move away from the frame (1).

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